**************************************************************************** 1) From ALEX@BKYAST.BERKELEY.EDU Tue Mar 30 01:47:29 1993 Subject: To supernova observers network 3-29-93 Dear Nova and Supernova observers: The object in M81 is almost certainly a supernova. My colleagues nearly got a spectrum 20 minutes ago, but Lick got fogged in just as they were about to start the exposure!! They hope the weather will clear soon. Below is a message I sent to Brian Marsden and Dan Green not long ago. If a Type Ia, the SN should rise to about mag 8 or 8.5; if Type II or Ib/c, it might be somewhat fainter (9.5 or 10). I urge all of you to observe it as much as possible. This is our best opportunity to observe a bright supernova in over 20 years (since SN 1972E). Low- or moderate- resolution spectroscopy with small telescopes during the upcoming bright run will be invaluable, since most of the larger telescopes will be equipped with IR equipment or high-dispersion spectrographs. Please use a narrow slit (roughly 2") for good resolution and a wide slit (roughly 8") to get good spectrophotometry. Those of you who can should rotate your narrow slit to the parallactic angle, to preserve the relative spectrophotometry, especially if you can't take another spectrum through a wide slit. Well-sampled light curves (UBVRIJHKLM) will also be needed. I am willing to act as a coordinator of the ground-based optical spectra and photometry, so feel free to send me data, questions, etc. All contributors of good data will be included in subsequent data (plus some interpretation) papers. Note that we also have an excellent chance to study the ISM in M81 and the Galaxy with this object. Thus, high-dispersion spectra are welcome. Moreover, this object could easily be studied with spectro-polarimeters. Everyone is encouraged to join in on the observations! We should be able to follow this thing for several years (depending on the type) with modern equipment. Cheers, Alex Filippenko alex@bkyast.berkeley.edu 42224::alex 510-642-1813 (phone) 510-642-3411 (fax) **** Brian and Dan, Here is some information for the IAU Circulars. This thing is jinxed. We missed it in our recent images of M81 with the Leuschner Observatory Supernova Search (it was off the field by roughly 10" in each case!). Now here's another sob story: Just as my colleagues at Lick were about to get a spectrum (they already had the star on the slit!), the fog rolled in!! Even 1 minute would have given a spectral type. They think it will clear up later on... Let's hope so. But for now, here's all I have. Note that our approximate position (about 45" W and 160" S of the nucleus) is way off from the 210" W, 200" S that is floating around through the nova network. This cost the Palomar 5-m infrared observers a lot of time --- and now they are fogged in, too. Aaaargh! Alex Filippenko SUPERNOVA 1993xxx IN M81 (CHECK NAME!!) (Discovery information...) A. V. Filippenko, University of California at Berkeley, reports that a CCD image of M81 obtained on March 30.1 UT by R. R. Treffers and Y. Paik (also of Berkeley) with the 0.8-m reflector at Leuschner Observatory confirms the presence of a new stellar object roughly 45" W and 160" S of the nucleus. From ALEX@BKYAST.BERKELEY.EDU Tue Mar 30 04:05:54 1993 Received: from cfa.harvard.edu by cfa0.HARVARD.EDU (4.1/SMI-4.0) id AA07972; Tue, 30 Mar 93 04:03:25 EST Received: by cfa.harvard.edu; Tue, 30 Mar 93 04:04:47 -0500 Date: Tue, 30 Mar 1993 0:57:06 -0800 (PST) From: ALEX@BKYAST.BERKELEY.EDU (ALEX FILIPPENKO, UC BERKELEY, 510-642-1813) Message-Id: <930330005706.2de08b5e@BKYAST.BERKELEY.EDU> Subject: SN in M81! To: pilar@cfanewton.HARVARD.EDU, brian@cfaleavitt.HARVARD.EDU, richmond@astro.Princeton.edu, bill@elysium.astro.wesleyan.edu, jeffery@cfa.HARVARD.EDU, ypaik@goofy.berkeley.edu, ho@javaman.berkeley.edu, matheson@salmo.berkeley.edu, jrg@titan.berkeley.edu X-Vmsmail-To: @SNBRUNO4.MAIL Status: R 3-30-93, 12:30 am Dear Nova and Supernova Observers: The object discovered by Madrid amateur astronomers in M81 is a supernova! The spectral classification is uncertain at this time, because the spectrum is so featureless, but it is probably Type II. It is imperative that good optical spectra, spanning as wide a wavelength range as possible, be obtained as often as possible during the next few months. This will be difficult on large telescopes during the upcoming bright run (next 2 weeks) --- but small telescopes can easily be used to get superb spectra of such a bright object. Again, I urge that observations be obtained throughout the spectrum: UV, optical, and IR are particularly important in the near future, but GRO and other satellites should try, too. Here is a message we sent to Brian Marsden and Dan Green. Cheers, Alex Filippenko *************** 3-29-93, 11:55 pm Brian and Dan, We got it!! Here is an update which contains the information for both the images and the spectra. You can ignore the previous version. Cheers, Alex SUPERNOVA 1993J IN M81 (CHECK NAME!!) (Discovery information from amateurs in Madrid...) A. V. Filippenko, University of California at Berkeley, reports that a CCD image of M81 obtained on March 30.1 UT by R. R. Treffers and Y. Paik (also of Berkeley) with the 0.8-m reflector at Leuschner Observatory confirms the presence of a new stellar object roughly 45" W and 160" S of the nucleus. The visual magnitude is approximately 11. Inspection of CCD spectra (range 356-731 nm) obtained on March 30.3 UT by M. Davis and D. Schlegel (also of Berkeley) with the Lick 3-m Shane reflector reveals that the object is indeed a supernova. The continuum is very blue and remarkably featureless. The only clear absorption lines are narrow Na I D and Ca II H+K, undoubtedly of interstellar origin. It is probable, but not yet certain, that the object is a Type II supernova observed only a few days after the explosion. Note, however, that the Type Ia SN 1991T exhibited a relatively featureless spectrum well before maximum brightness (Filippenko et al., 1992, ApJL, L15). Depending on its spectral type and extinction, SN 1993J may reach eighth magnitude during the next two weeks. Aside from SN 1987A in the LMC, it is the brightest supernova since SN 1972E in NGC 5253. Further observations throughout the electromagnetic spectrum are urged. ***************************************************************************** 2) From richmond@spiff.Princeton.EDU Tue Mar 30 13:55:41 1993 Subject: Information on stars near SN 1993J For those interested in studying the new SN 1993J in M81, I've made up a "finding chart" below listing all I could find out about the stars nearby. It may be of use to some of you, or it may not. Please feel free to contact me with questions or comments. I will try to send an updated version of the chart below with accurate Bessel UBVRI magnitudes as soon as I can determine their values. If you can measure some yourself, please let me know and I'll send the information on to others! I've tried to find information on the stars not too far from the position of the SN. Below I try to give an impression of the field around the southern part of M81. The size is about 30 arcmin across (that is, much larger than any CCD field of view we're likely to use). The "*" marks the location of the SN, and "." are to give an idea of the extent of the bright part of M81. N -------------------------------------- | . G | I recommend that | .... | you look at the chart | ..... | given in "The Supernova | .M81 F | Search Charts and | ..... E | Handbook", by Thompson | ... D | and Bryan. | A | | * | Also, you can check out | C | AAVSO variable star | B | chart 094769. | | | | | | E | | W | | | | | | | X | | | | W | | Y | | Z | | | | | -------------------------------------- S The three closest stars to the SN are (positions listed are from the Hubble Guide Star Catalog) star visual GSC "V" RA (2000.0) Dec (2000.0) ------------------------------------------------------------- A 12.3 09 55 45.2 +69 01 45 B 11.9 11.4 09 55 41.5 +69 00 30 C 14.0 14.6 09 55 23.6 +69 00 49 where "visual" is from the chart in "The Supernova Search Charts and Handbook" and GSC is the Hubble Guide Star Catalog. Other stars that might possibly be placed in the same field of view as the SN are (positions again from Guide Star Catalog) star visual GSC "V" RA (2000.0) Dec (2000.0) ------------------------------------------------------------ D 12.4 12.0 09 54 31.9 +69 01 26 E 13.0 12.3 09 54 19.0 +69 02 38 F 14.1 14.5 09 54 53.4 +69 03 48 For astrometric purposes, you might wish to use the nearby SAO stars (positions listed are from the SAO catalog): star SAO num RA (1950.0) Dec (1950.0) SAO "mv" spectral class --------------------------------------------------------------------------- W 15026 09 52 56.000 +69 08 21.75 8.8 K X 15018 09 50 57.538 +69 10 36.56 10.5 Y 15020 09 50 58.832 +69 08 17.56 8.7 F Note that the SAO "mv" magnitudes and visual magnitudes listed on the "Supernova Search Charts" don't agree very well. Please let me know if I've made typographical errors, or if there's something else I can do. I'll try to send out rough photometry of the SN from Leuschner last night soon. Michael Richmond richmond@astro.princeton.edu ********************************************************************** 3) From ALEX@BKYAST.BERKELEY.EDU Tue Mar 30 14:57:09 1993 Subject: PS To: survey@deimos.caltech.edu, Status: R Kurt Weiler informs me that the VLA is (or soon will be) on SN 1993J. JHKL photometry was obtained at Palomar last night. 4) Alex FilippenkoFrom ALEX@BKYAST.BERKELEY.EDU Tue Mar 30 15:12:22 1993 Subject: More info on SN 1993J observations Status: R 3-30-93 Dear Nova and Supernova Observers: SN 1993J is the brightest supernova in the northern hemisphere since SN 1937C. This is an unprecedented opportunity for us to really observe it well. It is almost certainly a Type II caught extremely early in its development. As I mentioned last night, we need to get really good data on it throughout the electromagnetic spectrum. I am willing to coordinate ground-based photometry and spectroscopy. IUE is already on it, thanks to George Sonneborn and gang. Bob Kirshner is looking into HST. I think James Graham (Berkeley) will try to coordinate IR efforts. GRO has been notified. Rob Petre is looking into X-ray observations. We will see what EUVE can do here. Regarding optical (and near-UV and near-IR) ground-based observations: Low- or moderate-resolution spectroscopy and UVBRI photometry during the next few months is important to do. The next two weeks (bright run) are especially crucial, and will be difficult because most of the larger telescopes will be equipped with IR equipment or high-dispersion spectrographs (also very useful, of course!). Some details: Spectroscopy: Please try to get nightly spectra (even a few times per night might be good during the next week) over as broad a wavelength range as possible. Use a roughly 2" slit for good resolution, and a 8-10" slit for good spectrophotometry. The wide slit should be used even on non-photometric nights, to be sure that you are not suffering differential light losses due to atmospheric dispersion. Aligning the slit along the parallactic angle also helps (see Filippenko 1982, PASP, 94, 715). Take spectra of standard stars through the same slit widths (roughly 2" and 8-10" slits). I suggest Feige 34 for the UV part (since it does not contain strong Balmer lines and is therefore easier to calibrate). Photometry: Be sure to get as many bands (primarily UBVRI) as possible. Do standard stars, especially if the nights are photometric. Even if they are not photometric, differential photometry will be useful from stars on the same field. Nick Suntzeff of CTIO has contacted me, and offers very valuable advice (based on their experience with SN 1987A). To implement it, we will need some help, as outlined below. (1) We should consider defining a local star of neutral color as the standard star for use, especially by people with photoelectric photometers. Since the SN might reach mag 8-9, we should probably find an A star or F star in this mag range as our standard. Also, let's pick another star 2-3 mag fainter. As the SN fades these two stars will allow a uniform set of photometric calibrations. This will reduce the errror in the photometry due to the extinction, which can easily dominate the overall errors. Observers with photoelectric photometers on small telescopes can often get really good phtometry even in non-photometic conditions if we provide a local standard. ACTION ITEM: WE NEED THE COLORS OF STARS NEAR SN 1993J TO CHOOSE GOOD LOCAL STANDARDS. Can anyone get this? OTHERWISE, LET'S USE THE STARS CLOSEST TO THE SUPERNOVA (SEE BELOW). (2) Much more importantly, we need to define a local spectrophotometric standard. EVERYONE reduces spectrophotometry differently, and if there are no stars in common, we will have a hell of a time getting out the 5% wiggles in the data, which I am sure will turn out to be interesting to a large number of theorists. (The "Bochum" event comes to mind for SN 1987A.) With the local standard, we will not have to worry about extinction and a host of other problems. ANY star will do, but if we choose an early-type star, we can at least see the errors in the continuum (away from the H-lines at least). We need to verify that both the spectroscopic and photometric standards are not variable. It is extremeley important to always observe this local spectrophotometric standard! Observe it in the same way that you observe the supernova. Also observe one of the normal KPNO standards, of course. (I recommend Feige 34 UNTIL FURTHER INFORMATION ABOUT THE COLORS AND NON-VARIABILITY OF NEARBY STARS BECOMES AVAILABLE, I SUGGEST THAT WE CHOOSE THE 11.4 MAG (HST GSC "V") STAR SOMEWHAT TO THE SOUTHEAST OF THE SUPERNOVA AS OUR "BRIGHT" STANDARD STAR (CALL IS "STAR B"), AND THE 14.6 MAG (HST GSC "V") STAR IMMEDIATELY TO THE SOUTH OF THE SUPERNOVA AS OUR "FAINT" STANDARD STAR (CALL IT "STAR C"). THE BRIGHT STAR'S J2000 POSITION IS (STAR B): ALPHA = 09 55 41.5, DELTA = 69 00 30. THE FAINT STAR'S J2000 POSITION IS (STAR C): ALPHA = 09 55 23.6, DELTA = 69 00 49. THE SUPERNOVA'S J2000 POSITION IS APPROXIMATELY ALPHA = 09 55 25.0, DELTA = 69 01 13. NOTE THAT THE BRIGHT STAR (HST GSC "V" = 12.3) TO THE NORTHEAST OF THE SN (CALL IT "STAR A") IS SURROUNDED BY A BRIGHTER BACKGROUND. THUS, ALL OTHER THINGS BEING EQUAL, IT IS NOT AS FAVORABLE. HOWEVER, IF IT TURNS OUT TO HAVE MORE NEUTRAL COLORS THAN STAR B MENTIONED ABOVE, WE MIGHT WANT TO USE IT. (Note that the above naming convention follows that established by Michael Richmond a few hours ago. His e-mail address is richmond@astro.princeton.edu, in case you want an e-mail version of a finder chart for the SN.) Stay tuned for more information..... Cheers, Alex Filippenko **************************************************************************** 5) From ALEX@BKYAST.BERKELEY.EDU Tue Mar 30 15:43:31 1993 Subject: PPS 3-30-93 SN 1993J observers: One or two more things before I have to leave my office for the afternoon: (1) Please try to get the widest spectral coverage, even if it means a loss of spectral resolution. 3100-10000 Ang is great for "optical" observers. We need to overlap with the space-UV and also the IR. (2) This is a great "cloudy night" project --- spectra can be smoothed, etc. The more coverage we have, the better. We can weed out the worst spectra later, if there is an overabundance of data. You can actually observe tenth mag stars through VERY THICK CLOUDS! Just try to get the SN and the local standard. Let me know what's happening, especially in the ground-based optical effort. Best of luck! Alex Filippenko 6) From richmond@spiff.Princeton.EDU Tue Mar 30 17:35:20 1993 Subject: Astrometry and (ugly) colors of stars in SN 1993J field Status: R Astrometry and Photometry of SN 1993J ------------------------------------------------------------ I've gone through the Leuschner images from last night (Mar30 UT) and derived a position based on the values for nearby stars given in the Guide Star Catalog. Here is the position I derived, together with the one from the IAU Circular 5731: RA (2000.0) Dec (2000.0) RA (1950.0) Dec (1950.0) ================================================================ me 09:55:25.0 +69:01:13.3 09:51:19.25 +69:15:26.4 IAU 09:55:25.02 +69:01:12.6 09:51:19.27 +69:15:25.7 You can take your pick. They're pretty close. The offsets of the SN may be of more use to observers. The best object to use is star C (from my previous chart: if you don't already have it, you can get it via anonymous FTP from "spiff.princeton.edu"; cd to "richmond" and get the file "chart"), which is very close to the SN; however, some observers may want to use the nucleus of the galaxy. Since the nucleus is very extended, however, it may not be as easy to measure an offset precisely. SN offset from RA (arcsec) Dec (arcsec) ============================================================== star C 7.4 E 24.3 N nucleus 44.7 W +/- 0.05 161.1 S +/- 0.3 Note that the offset from the nucleus in declination may be off by up to 0.3 arcsec or so, due to the large distance and a slight uncertainty in our plate scale. The offsets from star C should be good to less than 0.05 arcsec, since they are so small. Now, let me GUESS at the colors of the stars in the field. Our images showed four possible comparison stars, called A,B,C and F in the finding chart I mailed out earlier. As Alex has mentioned, star A is immersed in a brighter portion of M81 than either B or C; and star F is likewise in a bright region. Nonetheless, I measured the RELATIVE magnitudes of the stars and the SN in our images (2 each of VRI), NOT making any color corrections, and came up with the following uncalibrated relative colors: Uncalibrated magnitudes and colors relative to star A star V (V-R) (R-I) GSC "V" ========================================================== B 0.51 -0.09 +0.06 -0.9 C 3.10 +0.01 +0.04 +2.3 F 3.27 +0.16 +0.04 SN -0.69 -0.31 -0.22 From which I conclude that a) the SN is blue (no surprise) b) stars A, B, C all have pretty similar colors, with star F being slightly redder. Let me point out, however, that the Guide Star Catalog's magnitude values for stars A, B, and C are VERY different from the ones I expected from our images. It's possible that one of stars A or B is a variable, with quite a large amplitude. We should be careful to make photometric measurements relative to as many stars as possible in every frame! Alex has already suggested that we use stars "B" and "C" as our photometric comparisons - I suggest that we use all three of A, B and C, at least until enough time passes that we can get better photometry and assure ourselves that some stars are non-varying. Finally, a request: the Hubble Atlas picture of M81 shows several very faint point sources near the location of the SN, in the midst of the spiral arm. It is POSSIBLE that one of them might be a supergiant progenitor. If anyone knows of high-resolution images of this section of the galaxy that might already exist in the literature, please let us know. This COULD be the second SN progenitor to be identified! % 3rd, 1961v? and 1987A. Michael Richmond ***************************************************************************** 6) From ALEX@BKYAST.BERKELEY.EDU Wed Mar 31 15:50:23 1993 Subject: sn 1993J in M81 3-31-93 Dear Nova and Supernova observers, Several items concerning SN 1993J in M81: (1) We have some information about the stars near SN 1993J, which will be used for calibration purposes. I append a note from Michael Richmond (with apologies to those of you who have already seen it). We agree that for photometry, we should use as many comparison stars as possible for the time being. Any stars that are found to be variable can be thrown out later on. (2) Regarding the local spectroscopic standard that should be observed whenever you observe the supernova: Spectroscopy by Jim Liebert and Jay Holberg at the Steward 90" shows that Star B is a late F star with pretty strong Balmer lines. Star C may be a bit later, perhaps a G. Until further notice, then, let's adopt Star B as our spectroscopic comparison star. As already noted, Star B is better than Star A anyway, in terms of having smaller background starlight contamination. I will try to find a nearby star with an even earlier spectral type, but I don't have any observing time with a spectrograph until April 12. Late F (Star B) should be pretty good, though --- we'll be able to see continuum deviations from what it SHOULD look like, except near the strong Balmer lines. The basic idea is as follows: observe and reduce this star in the same way that you do SN 1993J (using normal KPNO or Oke/Gunn standards). Then e-mail me the reduced spectra of SN 1993J AND Star B. I'll then carefully check all the spectra when systematically looking at the complete data set. Any deviations of Star B's spectrum from the adopted one (which defines what it SHOULD look like) will then be used to correct the spectrum of SN 1993J. Be sure to send me BOTH the narrow-slit and wide-slit spectra, if you are able to take data through two slit widths. (The extraction window should be large for the wide-slit spectrum, of course.) I emphasize once again that you should try to go as far down to the near-UV as possible, to connect up with the IUE spectra. By the way, I would prefer that any spectra that you wish to contribute to the collaboration be e-mailed to me in 2-column format (e.g., MONGO PL format), with the first column being wavelength and the second being f-nu or f-lambda. (3) Brian Schmidt and Pilar Ruiz-lapuente (CfA) have sent me the following messages for distribution. I'm sorry if some of you have already received them. (4) If you would like to be taken OFF my distribution list, please let me know by e-mail. Similarly, if you want to be put on it, send me a message. Best of luck with your observations! Remember --- keep at it even if skies are cloudy! Alex Filippenko *** From Brian Schmidt: A PostScript Finding chart of SN 1993J is available through anonymous ftp at cfa0.harvard.edu (128.103.40.1). It is in the directory pub/brian/ and you can get the compressed version 93J.finder.ps.Z (use UNIX uncompress), or the full PostScript File "93J.finder.ps". Print it out on a PostScript printer with 1 Mbyte of memory or more. This SN~II - because it is in a galaxy in which a Cepheid distance will be shortly forthcoming from HST observations (Mould et al) - is especially interesting for application of the Expanding Photosphere Method to determine its distance (Schmidt Eastman and Kirshner 1992 ApJ). To do the best job on this SN, spectroscopic and photometric observations through the bright-time are strongly encouraged, as are all other observations. This SN has probably nearly reached its B-maximum, which at m_B = 10.5 - 11 is typical for a SN II (Distance Modulus for M81 is 27.5 Freedman 1990 - average Sn~II have M_B = -16 to -18). We can expect it to brighten in the near-IR for several more weeks, and it will probably remain more-or-less steady in VR and I for the next hundred days. *** From Pilar Ruiz-lapuente: An account with images of the SN in M81 taken at Mount Hopkins Observatory has been set up for those interested in getting an accurate position to the object. The way to access to this account is making an anonymous ftp to cfa0.harvard.edu. The images have the names *.SN_M81 and are located in the subdirectory /incoming/pilar. *** From Michael Richmond: Astrometry and Photometry of SN 1993J ------------------------------------------------------------ I've gone through the Leuschner images from last night (Mar30 UT) and derived a position based on the values for nearby stars given in the Guide Star Catalog. Here is the position I derived, together with the one from the IAU Circular 5731: RA (2000.0) Dec (2000.0) RA (1950.0) Dec (1950.0) ================================================================ me 09:55:25.0 +69:01:13.3 09:51:19.25 +69:15:26.4 IAU 09:55:25.02 +69:01:12.6 09:51:19.27 +69:15:25.7 You can take your pick. They're pretty close. The offsets of the SN may be of more use to observers. The best object to use is star C (from my previous chart: if you don't already have it, you can get it via anonymous FTP from "spiff.princeton.edu"; cd to "richmond" and get the file "chart"), which is very close to the SN; however, some observers may want to use the nucleus of the galaxy. Since the nucleus is very extended, however, it may not be as easy to measure an offset precisely. SN offset from RA (arcsec) Dec (arcsec) ============================================================== star C 7.4 E 24.3 N nucleus 44.7 W +/- 0.05 161.1 S +/- 0.3 Note that the offset from the nucleus in declination may be off by up to 0.3 arcsec or so, due to the large distance and a slight uncertainty in our plate scale. The offsets from star C should be good to less than 0.05 arcsec, since they are so small. Now, let me GUESS at the colors of the stars in the field. Our images showed four possible comparison stars, called A,B,C and F in the finding chart I mailed out earlier. As Alex has mentioned, star A is immersed in a brighter portion of M81 than either B or C; and star F is likewise in a bright region. Nonetheless, I measured the RELATIVE magnitudes of the stars and the SN in our images (2 each of VRI), NOT making any color corrections, and came up with the following uncalibrated relative colors: Uncalibrated magnitudes and colors relative to star A star V (V-R) (R-I) GSC "V" ========================================================== B 0.51 -0.09 +0.06 -0.9 C 3.10 +0.01 +0.04 +2.3 F 3.27 +0.16 +0.04 SN -0.69 -0.31 -0.22 From which I conclude that a) the SN is blue (no surprise) b) stars A, B, C all have pretty similar colors, with star F being slightly redder. Let me point out, however, that the Guide Star Catalog's magnitude values for stars A, B, and C are VERY different from the ones I expected from our images. It's possible that one of stars A or B is a variable, with quite a large amplitude. We should be careful to make photometric measurements relative to as many stars as possible in every frame! Alex has already suggested that we use stars "B" and "C" as our photometric comparisons - I suggest that we use all three of A, B and C, at least until enough time passes that we can get better photometry and assure ourselves that some stars are non-varying. Finally, a request: the Hubble Atlas picture of M81 shows several very faint point sources near the location of the SN, in the midst of the spiral arm. It is POSSIBLE that one of them might be a supergiant progenitor. If anyone knows of high-resolution images of this section of the galaxy that might already exist in the literature, please let us know. This COULD be the second SN progenitor to be identified! (actually third, if you include SN 1961V --- Alex). ADDENDUM BY ALEX: IAUC 5736 notes the presence of a possible progenitor (or tight cluster containing the progenitor) on CFHT plates obtained in 1980 and on KPNO images obtained in 1990. The object appears stellar to 1". At V = 20.0, this object would have an absolute V magnitude of -7.5 (adopting a distance modulus of 27.5 from Freedman 1990) --- not totally outrageous for a supergiant. Any other CCD images or plates should also be examined, as suggested by Michael Richmond above. ********************************************************************* 7) From richmond@spiff.Princeton.EDU Thu Apr 1 17:30:36 1993 Subject: More on the SN 1993J progenitor As reported in IAU Circulars 5736, 5737, there MAY be a possible red supergiant progenitor close to the position of SN 1993J. After looking at UV and H-alpha images of M81 in the literature (Hill et al, 1992, Ap.J. 395, L45 for UV; Petit, Sivan and Karachentsev, 1988, A&AS 74, 475 for H-alpha), I think that we can rule out ANY blue supergiant progenitor. No images show any HII region within about 10 arcsec (~ 150 pc, assuming d~3.2 Mpc)) of the position of SN 1993J, only very low surface-brightness diffuse emission. The H-alpha image rules out any HII region with a flux of greater than about 30 x 10^(-16) erg/cm^2-s, which converts to a total luminosity of more than about 3.6 x 10^36 erg/s. That, in turn, is roughly the luminosity one would expect from a main-sequence O9 or B0 star (Spitzer, "Physical Processes in the ISM"). Of course, one can always invoke huge amounts of dust, but I think that unlikely. Note that the UV observations led Hill et al. to conclude that the visual extinction to regions within M81's spiral arms was on average about 1.5 magnitudes, a bit larger than previous estimates of 1.1 magnitudes, but within the errors. Michael Richmond ***************************************************************************** 8) From ALEX@BKYAST.BERKELEY.EDU Sat Apr 3 12:17:12 1993 Received: from cfa.harvard.edu by cfa0.HARVARD.EDU (4.1/SMI-4.0) Subject: Optical news on SN 1993J Status: R 4-3-93 Dear SN 1993J observers: It is very important to continue observations of SN 1993J as frequently as possible. There is substantial evidence that this is a peculiar supernova: the spectrum is unusual, as is the light curve. The object is fading rapidly, but it might brighten again (as did SN 1987A). Or, it might plummet (as did S And). We can't be sure of what it will do --- observations are needed! I know that there are several observers who are trying to get IR photometry and spectroscopy, as well as high-resolution spectra to study the ISM in the Galaxy and in M81. It is also crucial that we obtain the necessary optical photometry and low-dispersion spectroscopy during the next week, around full moon. If possible, please try to use the observing guidelines (including observations of local standards, etc.) that I outlined in previous messages to the nova/supernova network. I would appreciate receiving calibrated low-to-moderate dispersion optical spectra and broad-band optical photometry over e-mail as soon as possible (from those who wish to contribute to this collaboration). Be sure to include a note concerning details of observations and reduction procedures. Below I include some comments from other observers. Some of you have undoubtely received this directly from their sources, but many others haven't. Just ignore them if they are not new to you. Based on Richmond's note, the following ACTION ITEM is called for: REALLY GOOD ANALYSIS IS NEEDED OF THE COMPARISON STARS, OVER MANY NIGHTS, BEFORE WE USE THEM FOR FINAL PHOTOMETRIC CALIBRATION OF SN 1993J. Good luck! Alex Filippenko ******* From Michael Richmond (richmond@astro.Princeton.edu): It looks like the max light in UBVRI has DEFINITELY been reached. The SN is still blue, but reddening pretty quickly. One disquieting note: stars A and B are showing quite a difference in relative brightness night-to-night, with a trend of A getting fainter relative to B. We'd better watch this carefully! star C seems to be pretty constant relative to A, but it's much fainter (about 3 mag), so the photometry isn't as good. **** From Gerard de Vaucouleurs: (1) Hi! I thought the appended notes that I am circulating in our Dept might be of some interest to you and your team. Please feel free to use them in any way you want. I would appreciate receiving photometric observations which are NOT in the IAU circulars. Thanks. Regards and best wishes. G. de Vaucouleurs (gav@astro.as.utexas.edu) Notes on M 81 and SN1993J G. de Vaucouleurs Department of Astronomy, University of Texas, Austin, TX 78712 1. The mean extinction-corrected distance modulus of M 81 is (m-M)$_{\circ}$ = 27.75 $\pm$ 0.1 (mean and median of 11 estimates by seven different authors or teams using ten different methods, 1978-1991). Extinction corrections are uncertain, however, with A$_{B}$ varying from 0.1 to 0.4. 2. The V-band magnitudes (ranging from 8.9 to 15.3) of two dozen comparison stars in the M 81 field are given in the Thompson \& Bryan 'Atlas of SN Search Charts' (Cambridge U. Press, 1988) which observers are urged to use. In particular stars B and C mentioned in the IAU Circulars are shown at V(B) = 11.9 and V(C) = 14.0. 3. If V $\simeq$ 10.3 observed on March 30-31 is the maximum, SN1993J is $\sim$ 0.8 mag brighter than the Type II SN 1970 in M101 (neglecting color and extinction corrections). Assume that it was a good match to SN1993J, then, if the distance modulus of M 101 is (m-M)$_{o}$ = 28.6 $\pm$ 0.1 (mean and median of 20 estimates by a dozen sources, 1973-1986), the distance modulus of SN1993J and M 81 is (m-M) $\simeq$ 28.6 - 0.8 = 27.8 (consistent with mean above) and the absolute magnitude of SN1993J at maximum is M$_{V} \simeq - 17.5$, somewhat more luminous that the average type II SNae on the short distance scale (de Vaucouleurs, ApJ, 227, 753, 1979). 4. If the post-maximum light curve of SN1993J follows the average for `plateau-type' Type II SNae, the plateau phase will begin 40-50 days past maximum and at a level $\simeq$ 2.0 mag below maximum (de Vaucouleurs, in `SNae and Supernova Remnants', Reidel, 1974, p. 203), or about m $\sim$ 12.3 (again neglecting as yet unknown color and extinction corrections). 5. The plateau phase should end $\sim$ 100 days after the initial outburst or $\sim$ 90 days past maximum, at the end of June 1993. It will be important to closely monitor (photometry, spectroscopy) the onset of the rapid decline phase following to see if the break is as sudden and sharp as in, e.g. SN1923 in M83, or is a more progressive transition. The differences between SNIIae at the end of the plateau phase are not yet understood. 6. For comparisons with SN1987A (light echo, etc) remember that the distance of M 81 is about 75 times that of the LMC (1" = 17 pc). (2) Hi! I tried to send you this memo yesterday, but the e-mail address in the AAS directory must be wrong. [Yes, it is wrong. The correct address is alex@bkyast.berkeley.edu --- Alex.] I hope this will reach you. Please feel free to use it in any way you want. I am concerned that many observers do not seem to be aware of the M81 comparison stars in the Thompson-Bryan Atlas and waste their efforts by adopting bad magnitudes from other sources (including the GSC). Harold Corwin has sent me some unpublished UBVRI McDonald observations of some of these stars, from which we can cook up approximate JHK magnitudes to help the IR and spectrophotometric observers. Best regards. G. de Vaucouleurs (gav@astro.as.utexas.edu) Here are Harold Corwin's UBVRI observations: Star V B-V U-B V-R V-I n RA (B1950.0) Dec Chart ID 1 12.45 0.63 0.11 0.39 0.76 3 09 50 25.6 +69 15 38 12.4 overline 2 11.78 0.69 0.16 0.40 0.80 3 09 50 35.9 +69 20 04 11.8 overline 3 11.62 0.53 -0.04 0.33 0.69 3 09 51 21.2 +69 05 34 11.6 (near 14.1) 4 11.90 0.50 -0.08 0.30 0.60 2 09 51 36.1 +69 14 44 11.9 overline 5 13.65 0.57 -0.09: 0.34 0.69 3 09 52 11.1 +69 09 41 13.6 overline 6 11.85 1.30 1.29 0.68 1.29 3 09 52 39.7 +69 24 18 11.8 underline 7 14.73 0.46 0.12: 0.36 0.60: 3 09 53 17.7 +69 24 54 14.7 overline The V-R and V-I are on Cousins's system. All the observations were made in 1982 Nov, 1983 Feb, and 1983 Apr, with the 76-cm reflector at McDonald Obs. There is no evidence of variability for any of the stars. The three values marked with a colon have each had a discordant measure rejected (the means with no rejections are -0.04, 0.09, and 0.66, respectively). The mean internal standard deviations for these seven stars only are V: +-0.015 B-V: +-0.011 U-B: +-0.032 (no rejections) +-0.014 (two rejections) V-R: +-0.019 R-I: +-0.029 (no rejections) +-0.018 (one rejection) These are about the values that I expected based on error analyses of my other McDonald data. The positions are from the GSC (mean errors about 1 arcsec), and the "Chart ID" refers to the label on the Thompson/Bryan N3031 chart. ****** From Alain Porter: Dear supernova colleagues: here are 2 news items about SN 1993J I have just submitted to the IAU Circulars. The situation with the light curve is especially urgent. Observe it even several times per night if you can. It has been some time since I updated this distribution list. If I should use a different address for you, if you know anyone I should add, or you want to be dropped from the list, please let me know. I have heard relatively little news today. Is the spectrum still featureless? Alain Porter APORTER@NOAO.EDU * * * * * * * * * * SN 1993J ALREADY FADING * * * * * * * * * * A. C. Porter, KPNO, reports: unfiltered and Harris VRI band photometry of SN 1993J by A. W. Neely, NF/ Observatory, reveals that the supernova has already started to fade. V magnitudes on three post-discovery nights are: UT March 31.21, V = 10.33, April 1.18, 10.60; April 2.15, 10.97. Rms errors are about 0.03 magnitudes for each night. The V magnitudes are measured relative to the V = 11.42 GSC star 87" east and 43" south of the supernova [Mike Richmond's star B]. The R and I band photometry, not yet calibrated, indicate that the supernova is reddening, with the maximum occurring progressively later in redder bands: the R magnitude dropped by 0.07 and 0.25 between Mar 31-Apr 1 and Apr 1-2, respectively. The I magnitude dropped by 0.04 and 0.16 during the same intervals. Unfiltered photometry, including 2 prediscovery frames, confirm that maximum occurred on about March 31: UT March 28.30, 13.8; March 29.18, 11.2; March 31.21, 9.9; April 1.18, 10.5; April 2.15, 11.0. The unfiltered magnitude on UT March 28 is measured relative to the GSC V magnitude of the [14.6 magnitude] star 8" west and 24" south of the supernova. The unfiltered magnitudes on the remaining 4 nights are measured relative to the 11.42 star mentioned above. All images were taken with the 0.445m f/4.5 reflector of NF/ Observatory using a Craf-Cassini Ford-JPL 1024 x 1024 CCD at a prime focus scale of 1.2" per pixel. Seeing averaged about 4". The V exposure times were 100 seconds, the R and I exposure times 60 seconds, and the unfiltered exposure times 30 seconds. This unexpected rapid fading from an initial V absolute magnitude of -15.4 (assuming the distance modulus of 25.7 from the Tully Nearby Galaxies Catalog, with no reddening correction) suggests that SN 1993J may develop a light curve resembling that of SN1987A, in which an initial sharp but optically faint spike is followed by an extended plateau. Frequent photometry in as many bands as possible becomes especially urgent under these circumstances. * * * * * * * * * * SN 1993J PROGENITOR COLOR * * * * * * * * * * A. C. Porter, KPNO, reports: Images of M81 taken on UT January 21, 1985, by J. G. Cohen, CIT, show the progenitor of SN 1993J as a red stellar object. The images were taken on the 1.5m Palomar reflector, with an RCA CCD, at an image scale of 1.2"/pixel. The night was photometric and the seeing was 3". Preliminary photometry of two images each in the Thuan-Gunn g and r passbands gives r = 21.0, g-r = 0.9. The measurements were made with a 5" aperture and 5" wide sky annulus to minimize background contamination. The uncertainty in the color may be as large as +- 0.25 due to the galaxy background, but the redness of the progenitor is certain, and the value derived suggests a spectral type of about M0. Archival images of M81, plates as well as CCDs, offer an unprecedented opportunity to observe a well sampled light curve of a massive Type II supernova progenitor in the last few years before its explosion. The likely interest of such data is demonstrated not only by already emerging reports of the variation of SN 1993J's progenitor, but by the fact that the peculiar Type II SN 1984E apparently ejected a shell sometime between 2 and 23 years before its explosion (Gaskell and Keel 1988, in Kafatos and Michalitsianos, "SN 1987A in the LMC", p. 13). Such a light curve could significantly constrain models of the endpoints of the evolution of massive stars. ***** From Thomas J. Balonek (tbalonek@colgateu.bitnet): (1) For IAU Circulars: T.J. Balonek, C.A. Tremonti, Colgate University; and J. Koch, St. Lawrence University report: "V-band CCD photometry with the Burrell Schmidt telescope of the Warner and Swasey Observatory, Case Western Reserve University, on Kitt Peak indicates a near-linear 0.30 magnitude per day decrease in brightness during the two day interval 1993 March 31.2 to April 2.4. Adopting a V magnitude of 11.42 (from the Hubble Guide Star Catalog) for the comparison star located approximately 0.7' S and 1.5' E of the supernova (at R.A. = 09h 55m 41.5s; Decl. = 69D 00' 30", equinox 2000.0) we obtain approximate V photometry: March 31.17 UT, 10.31; 31.26, 10.34; April 1.21, 10.59; 1.40, 10.65; 2.13, 10.89; 2.22, 10.91; 2.37, 10.97. Each value is the average of three to five consecutive exposures. A different detector was used for the April 1 observations; color corrections have not yet been applied to these measurements." (2) Additional note for optical observers: There are major discrepencies in the V magnitudes of potential comparision stars for SN 1993J in the Hubble Guide Star Catalog. Our observations on three nights with the Burrell Schmidt telescope (CWRU) on Kitt Peak indicate that relative to comparison star B (labels from Michael Richmond's March 30 email "finder map") comparison stars C, F, and G may each be approximately 0.6 magnitudes brighter than indicated in the memo (that is, 0.6 magnitudes brighter than given in the Guide Star Catalog), and star A may be 1.4 magnitudes brighter. Comparsion stars D and E agree to within 0.05 magnitude with star B, consistent with magnitude errors typical of the GSC. Observers should thus be careful to specify which comparision stars are being used, at least until well determined magnitudes are available for these stars. *********************************************************************** 9) From ALEX@BKYAST.BERKELEY.EDU Sat Apr 3 17:33:57 1993 Subject: some more info on SN 93J 4-3-93 Dear SN 1993J observers: Here is some more information that might be of use to you. The supernova really is fading quite rapidly. The light curves and the spectra both suggest that it is a Type II linear, but time will tell... Cheers, Alex Filippenko **** From Steve Unger, La Palma (29146::swu): The following table gives VERY rough magnitudes for the SN. The V mag has an error of +/-0.2mag and the colours have +/-0.1mag. These are external errors. The internal ones (i.e. the changes from night to night) will be smaller - as shown by the uniform trends. I would only advise these as a guide, pending a full analysis. Alan 1993 Apr 2 0500 Time V B-V U-B V-R V-I ---- - --- --- --- --- Mar 30.9 10.78 0.05 -0.85 -- 0.18 Mar 31.1 10.85 0.10 -0.74 0.11 0.23 Mar 31.9 11.06 0.22 -0.65 0.21 0.40 Apr 01.9 11.31 0.29 -0.57 0.25 0.46 Apr 02.1 11.41 0.32 -0.49 0.26 0.50 **** From Taichi Kato (Kyoto University) "tkato@kusastrotkato@kusastro.kyoto-u.ac.jp" M. Okyudo (Nishiharima Observatory, Hyogo, Japan) obtained following differential photometry of SN1993J using 0.6-m reflector + CCD. The color band is Johnson V (uncalibrated, but the color system is very close to the standard V). 1993 Apr. 1.660 UT SN - star A = -0.18 He also confirmed that relative magnitudes between A,B and C are in pretty good agreement (within 0.01 mag) with those by Michael Richmond. One may conclude that a) Ignoring the systematic difference, the SN faded by 0.51 mag since Richmond's observations. b) No evidence of variability was found among the comparison stars. ************************************************************************** 10) From ALEX@BKYAST.BERKELEY.EDU Mon Apr 5 12:21:57 1993 Subject: SN 1993J update; sorry if you have already seen some of this. Dear SN 1993J enthusiasts: Note that there will be a workshop devoted to SN 1993J on the first day of the upcoming IAU Symposium on Supernovae (in Xian, China). Observers (and theorists) who might want to make a short contribution during this workshop should contact me directly, as I will be organizing it. Rumor has it that there is a ROSAT detection of SN 1993J, but I have not heard anything directly. Here is some information that may be of use to you: *** From Mark Kidger (La Palma; mrk@iac.dnet.nasa.gov): I am introducing all amateur and profesional photometry that reaches me into the computer. The light curve has a lot of scatter (eg: the [preliminary] La Palma points from Steve Unger are all about 0.5 mags too faint in V and lesser amounts in other filters), but various trends are very clear. The light curve seems to have shown various phases: 1.) An initial rapid rise up to March 29th. 2.) A pronounced change of rate of rise, but linear increase in brightness to maximum V=10.4 on March 31. 3.) A slower, but still linear decay from a very sharp maximum. Assuming that the initial rapid rise was linear, it seems that it started around March 25th. Does anyone have images from then I wonder?? I guess that if there were any still around they would have been announced by now. [Maybe not! All observers should check their records. -- Alex] As far as comparison stars are concerned, the Guide Star 14.6 star is catalogued (don't ask me where, I have it second hand) as a possible variable and is not being recommended by amateurs as a good comparison star to use. [MORE RECENT UPDATE:} I've added some more data to the light curve which has changed the situation slightly, I've also looked at the estimated zero-time a little more closely; these are my conclusions: 1.) The initial rise up to March 29.1 was 2.7 mags/day. Assuming that it start- ed out at V=20.5 I come up with starting date for the rise of March 25.9. Ie: that's my best estimate of when the explosion happeneded. 2.) I am having major problems with the observations from March 29-31st. I stick by the monotonic initial rise and slow-down around March 29.0 but, then, it's a bit more confusing. Some data from the Pacific area from about March 29.5 and 30.5 would help a lot. It seems that there may well have been a slow rise for about 1 day, followed by a very rapid jump of about one magnitude from about 11.2 to about 10.4 which is no seen directly. At least, there is a sharp discontinuity in the data before and after March 30.5. It's a little hard to tell, hjas as anyone any unpublished data from March 30.5+/-0.5????? [ALL OBSERVERS SHOULD CHECK THEIR FILES TO SEE IF WE CAN FILL THIS GAP! -Alex] **** Here is Mark Kidger's data table: Profesional data (photoelectric or CCD): Date March+ U B V R I J H K L 28.3 -9.99 -9.99 13.80 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 29.18 -9.99 -9.99 11.20 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 30.9 9.98 10.83 10.78 -9.99 10.60 -9.99 -9.99 -9.99 -9.99 31.00 -9.99 11.05 -9.99 10.75 -9.99 -9.99 -9.99 -9.99 -9.99 31.1 10.21 10.95 10.85 10.74 10.62 -9.99 -9.99 -9.99 -9.99 31.17 -9.99 -9.99 10.31 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 31.2 -9.99 -9.99 -9.99 -9.99 -9.99 10.90 -9.99 10.60 -9.99 31.21 -9.99 -9.99 9.90 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 31.21 -9.99 -9.99 10.33 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 31.26 -9.99 -9.99 10.34 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 31.9 10.63 11.28 11.06 10.85 10.66 -9.99 -9.99 -9.99 -9.99 32.18 -9.99 -9.99 10.50 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 32.18 -9.99 -9.99 10.60 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 32.21 -9.99 -9.99 10.59 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 32.40 -9.99 -9.99 10.65 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 32.9 11.03 11.60 11.31 11.06 10.85 -9.99 -9.99 -9.99 -9.99 33.1 11.24 11.73 11.41 11.15 10.91 -9.99 -9.99 -9.99 -9.99 33.13 -9.99 -9.99 10.89 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 33.15 -9.99 -9.99 10.97 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 33.15 -9.99 -9.99 11.00 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 33.22 -9.99 -9.99 10.91 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 33.37 -9.99 -9.99 10.97 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 Amateur visual and CCD data (assumed to be V): Date March+ 28.86 11.8 28.89 11.6 29.01 11.3 29.1 11.8 29.82 11.0 29.82 11.0 29.82 11.2 29.88 11.0 29.88 11.3 29.95 11.1 29.95 11.1 30.82 10.0 30.84 10.3 30.85 10.0 30.86 10.0 30.91 10.0 30.94 10.5 31.1 10.0 31.13 10.5 31.84 10.5 31.88 10.5 31.89 10.6 31.89 10.7 31.93 10.5 32.84 10.4 32.87 10.5 32.87 10.5 32.88 10.6 Upper limits reported to date: Date March+ U B V R I 25.60 -9.99 -9.99 17.5 17.5 -9.99 !V assuming neutral colour 26.9 -9.99 -9.99 14.0 -9.99 -9.99 26.92 -9.99 -9.99 14.5 -9.99 -9.99 *** From Taichi Kato (Kyoto; tkato@kusastro.kyoto-u.ac.jp"): SN1993J photometric history Updated list of observations obtained by Apr. 5. Data and visual inspection of TV-monitor at Ouda tonight suggest that the rapid decline phase may have stopped. This table is based on that sent from B. H. Granslo (Norway). For photoelectric photometry with mentioned comparisons, I have tried to reduce them using suggested photometric standards rather than GSC magnitudes. Such data are denoted as "corrected mag". Visual observations from Japan have also been reduced using V sequences in "Supernova Search Chart" (designated as SEQ="TB"). The compilation is only very preliminary and may contain errors. Consult the original data sources for quantitative analysis. Observations marked with * are communicated through this nova network. color band: U,B,V Johnson system R,I Kron-Cousins system unless notified g,r Gunn g,r mv visual (close to V) p photographic (miscellaneous materials) C unfiltered CCD comparisons: TB Thompson-Bryan's "Supernova Search Chart" = V TA "The Astronomer" sequence (system ?) GP GSC photometric field = V AC AAVSO chart = V? ************************************************************************ 11) From ALEX@BKYAST.BERKELEY.EDU Mon Apr 5 15:49:44 1993 Subject: more stuff on SN 1993J... 4-5-93 Dear SN 1993J'ers: We clearly need to be very careful about calibrating the photometric measurements before drawing any final conclusions. This is going to be tricky. Observers are encouraged to get accurate UBVRI photometry of all comparison stars in the field of SN 1993J; we should eventually compare results and end up with a final calibration. Here are some more messages: *** From Nick Suntzeff (CTIO): If you give [people] the mags of the stars in the CCD field, they will give you a mag with no problem. But this mag will probably be good to 0.05 mag or so in V, somewhat worse in B. This is because most CCD's have DQE's that dive into the blue but a filter set made for S20's. This produces a color term of 1.15-1.25 in B-V. If the SN is different by 0.50 in color from the average field star in the CCD frame, the B phot will be wrong by 0.1 mag. *** From Gerard de Vaucouleurs (Texas): SN1993J Comparison Stars Except for neglected color terms in the transformation to the Johnson V system, the main source of scatter in the various provisional magnitudes is in the adopted standards, often star B = GSC 0928. The transformation from GSC V magnitudes to Johnson V magnitudes published by Harold Corwin in IAU Circular 5742 is HGC V = 12.87 + 0.969(+/- 0.052)(GSC V - 12.43) from an impartial l.s. line fit to GSC #0434,0928,1023,1031,1123. These stars have all nearly the same color, <(B-V)> = + 0.54, range 0.46-0.63. Stars #0224 (red) and #0308 (aberrant) are excluded. Neglecting the barely significant scale coefficient, the mean systematic difference between the two scales is HGCV-GSCV = 12.87 - 12.43 = + 0.44. This is close to the difference for star B (11.90 - 11.42 = + 0.48). A preliminary reduction to ~ 50 available estimates to the Johnson V system (leaving still a large dispersion ~ 0.2 mag) suggests that the V maximum was reached on JD9077.7 at V = 10.5, B-V = + 0.3, with onset near JD9072.0. G. de Vaucouleurs (gav@@astro.as.utexas.edu) *** From Taichi Kato (Kyoto): SN1993J photometric history Updated list of observations obtained by Apr. 5. This table is based on that sent from B. H. Granslo (Norway) (bgranslo@astro.uio.no) For photoelectric photometry with mentioned comparisons, I have tried to reduce them using suggested photometric standards rather than GSC magnitudes. Such data are denoted as "corrected mag". Visual observations from Japan have also been reduced using V sequences in "Supernova Search Chart" (designated as SEQ="TB"). I have not tried to reduce "unfiltered CCD magnitudes" to V magnitudes, but left them as they are with designation "C". Prediscovery observation on Mar. 28.30 UT is corrected according to G. de Vaucoulers using recent photometric data on its comparison. Other CCD and visual magnitudes without referred comparisons are left as they were. Numerous data are included from Mark Kidger's table. The compilation is only very preliminary and may contain errors. Consult the original data sources for quantitative analysis. Observations marked with * are communicated through this nova network. color band: U,B,V Johnson system R,I Kron-Cousins system unless notified g,r Gunn g,r mv visual (close to V) p photographic (miscellaneous materials) C unfiltered CCD comparisons: TB Thompson-Bryan's "Supernova Search Chart" = V + recent photometry, assuming V=11.90 for star B. TA "The Astronomer" sequence (system ?) GP GSC photometric field = V AC AAVSO chart = V? **************************************************************************** 12) From ALEX@BKYAST.BERKELEY.EDU Tue Apr 6 15:43:05 1993 Subject: more news about SN 1993J 4-6-93 Dear worshippers of SN 1993J: Here is are detailed listings of mangitudes, from Mark Kidger and Tashi Kato. Also attached are messages from Steve Holt (X-ray detection reported by the ASCA team) and Kurt Weiler (possible radio detection). Cheers, Alex Filippenko ***** From Mark Kidger (La Palma, mrk@iac.dnet.nasa.gov) The light curve: Using the extra data published since my last look at the light curve, most from Taichi Kato's superb compilation, various things about the light curve are now a lot clearer. After the "correction" of the CCD data applied by Kato, almost all the CCD data is in very close agreement, with the amateur visual data running parallel, but a little more than 0.5 mags brighter. That though is virtually irrelevant, as it is the form of the light curve that is important. Please note that this is in no way intended to be a detailed light curve analysis, it just aims to point out where people may like to look in the final data. Disclaimers aside, various points arise: 1.) I stick by my date of March 25.5-26 for the start of the explosion. HOWEVER, this ignores the non-detection by Jean-Claude Merlin on March 27.91 as I suspect that it has an appreciable colour correction to bring it to V or pV. He must though, have missed seeing the supernova by a whisker. If there is no colour correction to Merlin's point, the initial rise was much faster and the date of explosion was later (probably around March 27.5). I know that de Vaucouleurs favours this later date. I wonder if the sn is actually on the exposure, but right at the limit..... 2.) The prominent knee in the light curve at V=11.8 (approx., CCD scale) is confirmed. This started at around March 29.2(ish) and lasted about 0.5 days or perhaps a little more. 3.) A sharp rise which was not shown in any of the data seen to date, of about 0.5-0.7 magnitudes. This appears to have been very fast indeed, maybe in just 2-3 hours or less and appears to have occurred on March 30.0-30.1 as near as I can guess. 4.) The steady, monotonic decline that we all know about, which started as soon as maximum was reached. 5.) There is a suggestion in the corrected CCD data of a small, brief peak in the light curve, superimposed on the decline, at about April 1.0 and with and amplitude of perhaps 0.15 magnitudes. A large number of points around that time show this trend which, even though small, may well represent a small sub-maximum. The data: People who have plotting routines may find my straight listing of the data more convenient than Kato's detailed archive. The data sets are the same, apart from having edited out some irrelevantly bright or early upper limits and a few photographic data points. My aim was and is to make it possible for anyone to plot the data with a minimum of file editing (a lot of routines don't like non-numerical characters which are essential in an archive to know who took the data and what it means). With my file it is a bit easier to locate simultaneous photometry in several bands, but the cost is that you don't know who took it without using Kato's table for cross-reference. Professional photometry: March+ U B V R I J H K L 16.90 -9.99 -9.99 20.7 20.0 -9.99 -9.99 -9.99 -9.99 -9.99 23.10 -9.99 -9.99 20.7 20.0 -9.99 -9.99 -9.99 -9.99 -9.99 28.3 -9.99 -9.99 13.80 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 29.18 -9.99 -9.99 11.70 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 30.25 -9.99 -9.99 10.2 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 30.9 9.98 10.83 10.78 -9.99 10.60 -9.99 -9.99 -9.99 -9.99 31.00 -9.99 11.05 -9.99 10.75 -9.99 -9.99 -9.99 -9.99 -9.99 31.1 10.21 10.95 10.85 10.74 10.62 -9.99 -9.99 -9.99 -9.99 31.17 -9.99 -9.99 10.79 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 31.2 -9.99 -9.99 -9.99 -9.99 -9.99 10.90 -9.99 10.60 -9.99 31.2 11.6 11.5 11.2 11.3 11.4 -9.99 -9.99 -9.99 -9.99 31.21 -9.99 -9.99 10.81 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 31.21 -9.99 -9.99 10.4 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 31.26 -9.99 -9.99 10.82 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 31.9 10.63 11.28 11.06 10.85 10.66 -9.99 -9.99 -9.99 -9.99 31.961 -9.99 11.30 10.97 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 31.972 -9.99 11.31 10.94 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 32.00 -9.99 11.40 -9.99 10.95 -9.99 -9.99 -9.99 -9.99 -9.99 32.02 -9.99 11.30 10.90 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 32.18 -9.99 -9.99 11.08 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 32.18 -9.99 -9.99 11.00 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 32.21 -9.99 -9.99 11.13 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 32.40 -9.99 -9.99 10.65 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 32.65 -9.99 -9.99 11.5 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 32.66 -9.99 -9.99 11.21 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 32.816 -9.99 11.51 11.19 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 32.86 -9.99 11.58 11.32 10.95 10.95 -9.99 -9.99 -9.99 -9.99 32.9 11.03 11.60 11.31 11.06 10.85 -9.99 -9.99 -9.99 -9.99 33.1 11.24 11.73 11.41 11.15 10.91 -9.99 -9.99 -9.99 -9.99 33.13 -9.99 -9.99 11.37 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 33.15 -9.99 -9.99 11.45 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 33.15 -9.99 -9.99 11.5 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 33.22 -9.99 -9.99 11.39 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 33.37 -9.99 -9.99 11.45 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 33.494 -9.99 -9.99 11.50 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 33.624 -9.99 11.78 -9.99 -9.99 11.08 -9.99 -9.99 -9.99 -9.99 34.299 -9.99 -9.99 11.75 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 34.342 -9.99 -9.99 11.78 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 34.369 -9.99 -9.99 11.76 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 34.385 -9.99 -9.99 11.77 -9.99 -9.99 -9.99 -9.99 -9.99 -9.99 34.561 -9.99 12.09 11.76 -9.99 11.15 -9.99 -9.99 -9.99 -9.99 Amateur visual and CCD (assumed to be V or close to V) 28.86 11.8 28.89 11.6 29.01 11.3 29.019 11.2 29.1 11.8 29.17 11.2 29.82 11.0 29.82 11.0 29.82 11.2 29.88 11.0 29.88 11.3 29.88 11.3 29.95 11.1 29.95 11.1 30.006 11.0 30.1 11.0 30.538 10.4 30.845 10.3 30.82 10.0 30.84 10.3 30.85 10.0 30.86 10.0 30.865 10.6 30.90 11.0 30.906 10.5 30.91 10.0 30.916 10.6 30.93 10.5 30.94 10.5 30.989 10.6 31.087 10.0 31.1 10.0 31.13 10.5 31.13 10.5 31.13 10.6 31.424 10.5 31.440 10.5 31.576 10.5 31.84 10.5 31.88 10.5 31.89 10.6 31.89 10.7 31.93 10.5 32.055 10.4 32.08 10.7 32.13 10.4 32.453 10.5 32.465 10.5 32.480 10.6 32.538 10.4 32.58 10.8 32.604 11.0 32.622 10.4 32.632 11.2 32.633 10.5 32.726 11.0 32.750 11.0 32.785 10.8 32.795 10.5 32.803 10.7 32.81 10.5 32.84 10.4 32.87 10.5 32.87 10.5 32.88 10.6 33.042 10.6 33.17 10.8 33.439 11.0 33.453 10.9 33.585 11.1 33.608 11.5 33.716 10.6 33.843 11.3 33.867 11.3 33.95 11.5 34.011 11.2 34.15 11.4 34.17 11.2 34.448 11.3 34.574 11.5 34.66 11.8 34.68 11.9 34.831 11.0 34.837 11.2 34.862 11.4 35.029 11.6 35.083 10.8 36.120 11.9 36.15 11.6 36.431 11.8 36.437 12.2 36.444 12.0 36.517 12.0 36.517 12.0 36.566 12.1 36.684 12.0 Useful upper limits: 25.60 -9.99 -9.99 17.0 17.0 -9.99 26.9 -9.99 -9.99 14.0 -9.99 -9.99 26.92 -9.99 -9.99 14.5 -9.99 -9.99 27.91 -9.99 16.0 16.0 -9.99 -9.99 An appeal for help: Has anyone got decent magnitudes in UBVRI for the nearby star listed as 14.0 in the Thompson-Bryan, or 14.6 in GSC? We are trying to calibrate the field with our 80cm+CCD, but it will be a few days yet before we have magnitudes and, in the meantime, I have people who want some kind of magnitudes to get a provisional reduction done on CCD data. Mark Kidger **** From Tashi Kato (Kyoto, tkato@kusastro.kyoto-u.ac.jp): SN1993J photometric history Updated list of observations obtained by Apr. 6. This table is based on that sent from B. H. Granslo (Norway) (bgranslo@astro.uio.no) For photoelectric photometry with mentioned comparisons, I have tried to reduce them using suggested photometric standards rather than GSC magnitudes. Such data are denoted as "corrected mag". Visual observations from Japan have also been reduced using V sequences in "Supernova Search Chart" (designated as SEQ="TB"). I have not tried to reduce "unfiltered CCD magnitudes" to V magnitudes, but left them as they are with designation "C". Prediscovery observation on Mar. 28.30 UT is corrected according to G. de Vaucoulers using recent photometric data on its comparison. Other CCD and visual magnitudes without referred comparisons are left as they were. Numerous data are included from Mark Kidger's table, table from Gerard de Vaucouleurs (gav@astro.as.utexas.edu)="Mail(gav)". The compilation is only very preliminary and may contain errors. Consult the original data sources for quantitative analysis. Observations marked with * are communicated through this nova network. color band: U,B,V Johnson system R,I Kron-Cousins system unless notified g,r Gunn g,r mv visual (close to V) p photographic (miscellaneous materials) C unfiltered CCD comparisons: TB Thompson-Bryan's "Supernova Search Chart" = V + recent photometry, assuming V=11.90 for star B. TA "The Astronomer" sequence (system ?) GP GSC photometric field = V AC AAVSO chart = V? ******** From Steve Holt (LHEAVX::HOLT) (who reports, verbatim, news he received from the ASCA team): We are now very confident about the positive detection of X-ray emission from SN 1993J from quick-look analysis of the playback data accumulated during the remote passes of April 5 which were telemetered in this morning. We can clearly resolve the emission of SN1993J from that of the nearby point source X6 in the image of SIS, although the separation of the two sources is only 1 arcmin. The intensity of SN1993J is far larger than that of X6 source and the GIS spectrum of the SN1993J region is flatter than that of M81 nucleus at energies above 2 keV. We are going to send IAU Circular tomorrow and will observe SN1993J again at the remote passes of April 7. **** From Kurt Weiler (NRL, kweiler@shimmer.nrl.navy.mil): Here is the latest information on radio results. This should appear as a circular shortly. Kurt SN 1993J in NGC 3031 K. W. Weiler, Naval Research Laboratory; R. A. Sramek, National Radio Astronomy Observatory; S. D. Van Dyk, Naval Research Laboratory; and N. Panagia, Space Telescope Science Institute, report that new observations of SN 1993J made on 1993 April 2.30 UT with the Very Large Array in B configuration show a possible detection at 1.3-cm wavelength (22.5 GHz) of a 0.8 +/- 0.2 mJy source at position R.A. = 09h51m19s.032, Decl. = +69 15' 26".47 (equinox 1950.0) near the reported optical position of the supernova (IAUC 5731 and IAUC 5737). It should be emphasized that this possible detection is barely significant and must be confirmed. Observations at 2.0-cm wavelength (14.9 GHz) show no detection to a limit (3 sigma) of < 0.33 mJy. New observations at 3.6-cm wavelength (8.4 GHz), combined with previous observations at the same wavelength as reported in IAUC 5743, still show no detection to a very low limit (3 sigma) of < 0.080 mJy. Radio monitoring is continuing at these and other wavelengths. New measurements of the compact radio source in the nucleus of NGC 3031 provide an improved position of R.A. = 09h51m27s.321, Decl. = +69 18' 08".20 (equinox 1950.0; +/- 0".2 in each coordinate). The measured peak flux densities of the nucleus are: 59 mJy at 3.6-cm wavelength and 12 mJy at 20 cm-wavelength. *************************************************************************** 13) From ALEX@BKYAST.BERKELEY.EDU Tue Apr 6 19:50:53 1993 Subject: correction from Kurt Weiler Subj: Correction to our last circular Date: Tue, 6 Apr 93 19:34:02 EDT From: Kurt w. Weiler To: alex%bkyim.hepnet@lbl.gov Subject: Correction to our last circular Cc: kweiler@shimmer.nrl.navy.mil, vandyk@rira.lbl.gov Alex, Just noticed an error in the last circular which I sent and you distributed. The last line mentioning 12 mJy peak at 20 cm should have read 12 mJy peak at 2 cm. I have already sent a correction to Marsden so, if he catches it in time, the circular should be OK. Can you let the people on your net know? Thanks, Kurt **************************************************************************** 14) From ALEX@BKYAST.BERKELEY.EDU Wed Apr 7 00:51:05 1993 Subject: what will it do next? 4-7-93 SN 1993J cult members, Here is some exciting news from Tom Balonek. Keep getting good photometry of this thing! Cheers, Alex Filippenko *** From: SMTP%"TBALONEK@CENTER.COLGATE.EDU" 6-APR-1993 21:14:16.17 To: tbalonek@CENTER.COLGATE.EDU, Subj: SN1993J on the rise again SN1993J appears to have reached a minimum on April 5 UT, and is now once again increasing in brightness. Preliminary reductions of CCD images taken with the Burrell Schmidt telescope on Kitt Peak by T. Balonek indicate that the SN is 0.11 magnitudes brighter in V on April 07.15 than on April 06.15; 0.09 magnitudes brighter in B; 0.01 brighter in U; 0.10 brighter in R; and 0.08 brighter in I. (Errors about +/- 0.02 - 0.03). ************************************************************************** 15) From ALEX@BKYAST.BERKELEY.EDU Wed Apr 7 11:02:12 1993 Subject: tidbits on SN 1993J 4-7-93 To the SN 1993J fan club: Taichi Kato's data confirm Tom Balonek's announcement that SN 1993J is on the rise. This suggests that the hydrogen recombination wave is now moving through the ejecta. The hydrogen lines should be getting stronger, and this may partially account for the gradual reddening of the spectrum (due to H-alpha) that we have seen recently. My group has not been able to obtain a low-dispersion optical spectrum for nearly a week at Lick. Does anyone have a very recent (past few days) spectrum? Please send me a description, and I will circulate it through the network. We have heard very little about the optical spectrum ever past April 1 (Fesen and Thorstensen observation, reported in the IAU Circulars). Eric Schlegel (GSFC) notes that the unofficial word is that ASCA has detected 93J, and has seen an iron line! Mark Kidger (IAC, Tenerife --- not La Palma as I had stated in a previous message) notes that he accidentally misinterpreted G. de Vaucouleurs' light curve analysis (probably due to saturation of information combined with use of JDs) in a previous message. They are actually in good agreeement, with an esimated onset day of JD 9072.0. He apologizes for the error. Cheers, Alex Filippenko ***************************************************************************** 16) From wheel@astro.as.utexas.edu Wed Apr 7 13:24:26 1993 Date: Wed, 7 Apr 93 12:03:00 CDT Subject: Next Status: RO I am pretty convinced, and speculated thusly in a seminar on Monday, that we have only seen some kind of precursor, a shock going through a dense atmosphere or circumstellar nebula. If this is right then it should climb to true maximum in the next week, just in time for the next dark time. As it stands, I don't think we have any idea yet what it is going to be. Standard Type II plateau is still the best bet, but we can't rule out Type II linear, or even some variety of Type I. Maybe another 87K Alex? Alejandro Clocchiatti reports from McDonald that he is starting to see P Cygni profiles. We should also be careful about the progenitor. Granted that there is something there within 0.25", that is a few parsecs at 3 - 4 Mpc. It could be a cluster (reddened HII region?). The progenitor could be fainter, which leaves open a host of possibilities from AGB stars to CV's. Onward and UPWARD! Craig ************************************************************************* 17) From richmond@spiff.Princeton.EDU Wed Apr 7 13:57:18 1993 Subject: Recrudescence of SN 1993J Images taken by the UC Berkeley Supernova Fan Club (Filippenko, Leibundgut, Paik, Treffers and Richmond) confirm the increase in 93J's brightness from Apr06 UT to Apr07 UT. A comparison of the preliminary measurements from Balonek's group and ours of the difference between the SN's magnitude on Apr 06 UT and Apr 07 UT: U B V R I Balonek (Apr06.15 - 07.15): -0.09 -0.11 -0.10 -0.08 Berkeley(Apr06.2 - 07.2) : +0.05 -0.07 -0.09 -0.13 -0.06 The uncertainties in these measurements are all around 0.01 to 0.03 magnitudes, plus there is undoubtedly a zero-point offset of a few hundredths between the scales. However, it is certain that the SN is brightening again (even in the U band, the initial sharp decline is leveling off). It's possible that the shock wave has finally reached the photosphere, and we might expect to see a prolonged period like the plateau in a normal type IIP. However, I've certainly been unable to predict the behavior of this supernova so far, so I make no guarantees! Spectral measurements are important - the hydrogen lines may finally begin to show in the next few days! Michael Richmond *************************************************************************** 18) From dave@neutrino.physics.arizona.edu Wed Apr 7 17:07:53 1993 Subject: Craig's comment Regarding J. C. Wheeler's comments on the maximum in SN1993J: It does resemble the shock breakout that Syd Falk examined back in the 1970's. If so the rise time should be short (hours). Shock breakout must happen, so it would be nice if we do have another rather different example. To sort this out, we will need to contruct a continuum spectrum around "maximum" to derive a bolometric luminosity and (at least) a mean photon energy (color temperature). Besides the heat, the other part of the hydrodynamics is the velocity field. We can try to fill in the velocity information from the development of spectral lines. What are the earliest reliable data on lines from the supernova's photosphere? It is worth expending some effort to get high quality, wide coverage spectra of the developing lines because that will allow us to determine the shock strength (and the distance of the supernova). What happens next depends upon parameters like mass, initial radius, Ni56 ejected, etc., and hopefully things we have not yet thought of. I agree with Craig that the progenitor question is still unclear, but it surely is important! Dave **************************************************************************** 19) From wheel@astro.as.utexas.edu Wed Apr 7 23:22:27 1993 Subject: emission spectra of SN 1993J Here is the text of a circular we just submitted. Alejandro and I were editing it while he exposed tonight, 10 minutes ago, and the H-alpha emission is still there! Any bets on a II linear? Craig Brian Here is the text for a contribution to a circular: ******* J. C. Wheeler and A. Clocchiatti report that spectra from 500 to 850 nm obtained with the Imaging Grism Instrument on the 0.76 m telescope of McDonald Observatory on April 6.3 and 7.3 with a dispersion of 0.7 nm/pixel show the onset of strong H-alpha and distinct P-Cygni profiles. Crude reduction by division by a polynomial fit to a continuum of a DA dwarf (GRW+705824=EG102) reveals that the spectrum on April 7.3 has an emission peak at 654.5 nm of 29 nm FWHM with a broad minimum at 616.3 nm. The emission is roughly 6 times stronger than the absorption, appears to have sharp blue and red edges at 637 and 781 nm, respectively, and is asymmetric with a stronger red wing. This emission is most readily identified with H-alpha. The lack of deep absorption may indicate fluorescence from circumstellar material which may affect the location of the minimum. Another feature shows a P-Cygni profile with a maximum at 588.4 nm and a well-defined minimum at 566.5 nm. This feature could be either He I lambda 5876 or Na D. For He I, the minimum represents a velocity of 10,760 km/s. The emission is approximately as strong as the absorption. The peak also shows a narrow absorption line of interstellar Na D. Another broad mimimum appears at about 500 nm. Pending more accurate reduction, the spectrum resembles that of the Type II linear SN 1979C on May 28, 1979 (Branch et al. Ap. J. 244, 780, 1981) although identification of the nature of the event at this time is premature. From ALEX@BKYAST.BERKELEY.EDU Thu Apr 8 02:36:01 1993 Subject: SN 1993J daily update 4-7-93 SN 1993J enthusiasts: A lot has happened today, and I could not put much of it in here due to lack of time. Most of it has appeared (or will soon appear) in the IAU Circulars. Here are a few tidbits from various people: *** From Rob Fesen (fesen@oak.dartmouth.edu) Do not yet have reduced data yet from low dispersion spectra taken April 1 thru 6 but observer G. Darling (MDM 2.4m) reports a weakening of the SN's blue continuum strength with H-alpha now `readily' apparent in spectra from nites of 4/4 thru 4/6. *** From George Sonneborn From: SMTP%"SONNEBORN@FORNAX.GSFC.NASA.GOV" 7-APR-1993 13:42:42.88 (IAU Circular which you've all seen by now.) Then: On a related subject, what is the heliocentric velocity of the SN? Does anybody know for certain? Accuracy of <10 km/sec would be helpful. Interpretation of the N V emission profiles may depend on its value. *** Could you please circulate this cry for help. There is too much disagreement between the CCD and visual observations, near and immediately past maximum. Thanks. GV(gav@astro.as.utexas.edu) V-BAND LIGHT CURVE: the V (CCD) and mv (visual) observations, all reduced as far as possible to the same zero point (*B = 11.90), give different epochs for maximum light. Polynomial fits (4 terms) give the following epochs and magnitude at maximum: ____________________________________________________________________ Data n JD-2449000 Maximum V(max) rms residual V (CCD) 22 077 to 083 076.0 10.6 0.04 mag mv 62 075 to 083 077.7 10.5 0.21 ____________________________________________________________________ The two curves agree near JD 077 and JD 083, but diverge by up to 0.5 mag near JD 079-080. The V(CCD) curve is inconsistent with the early visual observations (mv = 11 12, JD 075-077). Could the visual observers please identify their comparison stars and adopted magnitudes? If the maximum did in fact take place on March 29-30 as suggested by the CCD data, the rise from onset (JD 072.0?) would be incredibly fast. The visual data fit in much more smoothly with the discovery and pre-discovery data. Has anyone done bona fide UBVRI photometry of the supernova and comparison stars with a real photoelectric photometer with a 1P21 or S20 cathode? G. de Vaucouleurs (gav@astro.as.utexas.edu) *** From Brian Schmidt (brian@cfaleavitt.harvard.edu) SN 1993J is amsot certainly a classic SN-II~P. Although the initial maximum is a little strange - is strikes me that it was caused by the reprocessing of the UV flash by the Circumstellar Medium. Now that the SN Has moved through this - evidenced by the sudden upsurge in Radio emissions and appearance of P-Cygni profiles, I think we can guess that the SN will reach a 2nd maximum in most of the optical bands - the IR bands maximum being much more extended in time than the blue bands, with the entire plateau period lasting about 120 days... Here it is in a picture | ----------------------120 days ------------------| A guess at the "V" lightcurve x x x x x xxxxxxxxxxxxxxxx x x xxxxxx xxxxxx x x xxxxxxxxx x x x x x x x x x x x x x x x x x x My guess is that the JHK bands may keep rising for a couple of months - it all depends on how fast the photosphere moves inward. Good Luck in observing 93J. Brian Schmidt P.S. I have put a fits file on cfa0.harvard.edu (128.103.40.1) that shows a nice CCD picture of M81 11'x11' showing the SN, with inserts at the bottom showing the SN "Before" (yes you can saee the progenitor) and after. If you would like it, anonymous ftp to cfa0, and "cd pub/brian", then type "binary", and finally "get 93J.BandA.F" or "get 93J.BandA.F.Z" if you want the smaller UNIX compressed version. **** From Craig Wheeler: From: SMTP%"wheel@astro.as.utexas.edu" 7-APR-1993 10:08:26.73 I am pretty convinced, and speculated thusly in a seminar on Monday, that we have only seen some kind of precursor, a shock going through a dense atmosphere or circumstellar nebula. If this is right then it should climb to true maximum in the next week, just in time for the next dark time. As it stands, I don't think we have any idea yet what it is going to be. Standard Type II plateau is still the best bet, but we can't rule out Type II linear, or even some variety of Type I. Maybe another 87K Alex? Alejandro Clocchiatti reports from McDonald that he is starting to see P Cygni profiles. We should also be careful about the progenitor. Granted that there is something there within 0.25", that is a few parsecs at 3 - 4 Mpc. It could be a cluster (reddened HII region?). The progenitor could be fainter, which leaves open a host of possibilities from AGB stars to CV's. Onward and UPWARD! Craig **** From Dave Arnett: From: SMTP%"dave@neutrino.physics.arizona.edu" 7-APR-1993 14:06:59.00 Regarding J. C. Wheeler's comments on the maximum in SN1993J: It does resemble the shock breakout that Syd Falk examined back in the 1970's. If so the rise time should be short (hours). Shock breakout must happen, so it would be nice if we do have another rather different example. To sort this out, we will need to contruct a continuum spectrum around "maximum" to derive a bolometric luminosity and (at least) a mean photon energy (color temperature). Besides the heat, the other part of the hydrodynamics is the velocity field. We can try to fill in the velocity information from the development of spectral lines. What are the earliest reliable data on lines from the supernova's photosphere? It is worth expending some effort to get high quality, wide coverage spectra of the developing lines because that will allow us to determine the shock strength (and the distance of the supernova). What happens next depends upon parameters like mass, initial radius, Ni56 ejected, etc., and hopefully things we have not yet thought of. I agree with Craig that the progenitor question is still unclear, but it surely is important! Dave **** more from Craig Wheeler: Here is the text of a circular we just submitted. Alejandro and I were editing it while he exposed tonight, 10 minutes ago, and the H-alpha emission is still there! Any bets on a II linear? Craig J. C. Wheeler and A. Clocchiatti report that spectra from 500 to 850 nm obtained with the Imaging Grism Instrument on the 0.76 m telescope of McDonald Observatory on April 6.3 and 7.3 with a dispersion of 0.7 nm/pixel show the onset of strong H-alpha and distinct P-Cygni profiles. Crude reduction by division by a polynomial fit to a continuum of a DA dwarf (GRW+705824=EG102) reveals that the spectrum on April 7.3 has an emission peak at 654.5 nm of 29 nm FWHM with a broad minimum at 616.3 nm. The emission is roughly 6 times stronger than the absorption, appears to have sharp blue and red edges at 637 and 781 nm, respectively, and is asymmetric with a stronger red wing. This emission is most readily identified with H-alpha. The lack of deep absorption may indicate fluorescence from circumstellar material which may affect the location of the minimum. Another feature shows a P-Cygni profile with a maximum at 588.4 nm and a well-defined minimum at 566.5 nm. This feature could be either He I lambda 5876 or Na D. For He I, the minimum represents a velocity of 10,760 km/s. The emission is approximately as strong as the absorption. The peak also shows a narrow absorption line of interstellar Na D. Another broad mimimum appears at about 500 nm. Pending more accurate reduction, the spectrum resembles that of the Type II linear SN 1979C on May 28, 1979 (Branch et al. Ap. J. 244, 780, 1981) although identification of the nature of the event at this time is premature. ***** From Andrew Pickles: From: SMTP%"@cmsa.Berkeley.EDU:pickles@UHIFA.bitnet" 7-APR-1993 16:45:58.21 J,K photometry of the supernova in M81 (and nearby ref. stars) was obtained with the UH 2.2-m telescope and NICMOS HgCdTe camera on UT april 2.44 (photometric) and april 6.30 (through clouds). Other ir photometry and one red optical spectrum should be reported separately. UT april 1993 SN A B C 2.44 J 10.72 10.41 10.96 13.49 +/- .03 2.44 K 10.38 10.02 10.52 13.13 +/- .05 2.44 J-K 0.34 6.30 J 10.83+/-.06 6.30 K 10.23+/-.10 by comparison with stars A,B 6.30 J-K 0.60 Aloha, Andrew Pickles, Univ. Hawaii. pickles@galileo.ifa.hawaii.edu *** From Tashi Kato: From: SMTP%"tkato@kusastro.kyoto-u.ac.jp" 7-APR-1993 12:22:28.13 M. Okyudo and T. Ishida (Nishi-Harima Observatory, Hyogo, Japan) obtained following differential photometry of SN1993J using 0.6-m reflector + CCD. The supernova was confirmed to be on the rise. The color band is Johnson V (uncalibrated, but the color system is very close to the standard V). 1993 Apr. 7.610 UT SN1993J V=11.69 (assuming star B as V=11.90) star B - star A = +0.49 Regards, Taichi Kato (Kyoto University) ************************************************************************** 20) From wheel@astro.as.utexas.edu Thu Apr 8 12:02:04 1993 Subject: correction Status: R Brian, There was a transcription error in the draft circular contribution I sent you last night. I append the corrected text. If the circular has been sent out, please give the following correction when appropriate. "In IAUC #, the red edge of the H-alpha line reported by Wheeler and Clocchiatti should have been 681 nm not 781 nm." Thanks, Craig ***************************************************************************** 21) From ALEX@BKYAST.BERKELEY.EDU Fri Apr 9 10:54:59 1993 Subject: a few odds and ends 4-9-93 SN 1993J fans, Here are just a few tidbits. My computer was down last night, and I have to go catch a flight soon, so I'll send more information tomorrow. Cheers, Alex ****** From Stan Woosley: From: SMTP%"woosley@lick.UCSC.EDU" 8-APR-1993 10:28:11.22 The shape Brian Schmidt gives in his Christmas Card is, except for the precursor that has dominated the first two weeks, similar to what Eastman (and Weaver and Pinto) and I are submitting and what others have talked about for II-p for years. Circumstellar interaction and a possible early false photospere is a possibility that has occurred to many of us, but Roger thinks the circumstellar density was not high enough for that. One has to get the x-rays and radio emission out. Maybe the pre-SN burped before the explosion and the mass loss was irregular. There is evidence for time variability in the precursor. Right now it is impossible to say how far up the light curve will go and how long it will last. We are in a state similar to SN 1987A at the same age when we did not know the mass of the hydrogen envelope or the amount of 56Ni ejected. I'm sure everyone would like to be the first to say they knew all along what was happening, but I claim that is physically impossible right now. If, for example the star was almost a WR with say a few tenths of a solar mass of H still hanging on and if it ejected a few tenths Msun of 56Ni it could get much brighter soon, like a Ib. If all the Ni fell back and the envelope was low in mass, it could go out in two weeks. If the envelope mass was large, we are beginning an enduring plateau of 3 months. If it was an AGB star we could get a combination of the above effects (depending on envelope mass) and an exceptionally bright tail. I'm sure others will think of still other possibilities. The next two weeks should be critical in deciding and I'm sure I don't need to encourage the observers to keep observing. **** From Robert Cumming: From: rjc@mail.ast.cam.ac.uk (Robert Cumming) I keep expecting someone in your messages to point out the similarity between the '93J light curve and the V curve of SN 1988A. I found it in Patat et al (Arcetri preprint), and also Ruiz-Lapuente et al (1991, ApJ, 378, L41) and Benetti et al (1991, A&A, 247, 410). SN 1988A was caught before maximum, showed a ~2-mag drop over the first few days, like '93J, then stayed almost constant till about d120. My vote's for a II-P too then! *** From Gerard de Vaucouleurs: From: SMTP%"gav@astro.as.utexas.edu" 8-APR-1993 15:31:56.30 Here are a few results from a preliminary analysis of the V light curve. \documentstyle[12pt]{article} \oddsidemargin 0pt \topmargin -1.0in \textheight 9.5in \textwidth 6.5in \begin{document} \begin{center} {\bf SN1993J: Note no. 2 (4/8/93)} \end{center} Including the pre-discovery CCD observation by A. Neely on March 28.3 = JD 074.80 (13.8 corrected to 13.2 for zero point), a cubic fit of the visual light curve reduced to the TB (SSC) V scale [*A = 11.4, *B = 11.9, *C = 14.0], with 70 data points (67 after 2$\sigma$ rejection of 3 residuals larger than 0.5 mag) from March 28.30 to April 7.55, gives\\ \begin{center} $v = 32.403 - 6.9561 x + 0.70548 x^{2} - 0.022395 x^{3}$\\ \end{center} where x = JD - 2449070.0.\\ \par Extrapolation to m $\simeq$ 20.0 suggests an onset date of JD 072.3 = March 25.8 with an initial slope dm/dt $\simeq$ + 3 mag/day. The onset date is consistent with the non-detection (R $>$ 17.0) on March 25.6 by van Driel and with v $>$ 14.0 on March 26.9 (x = 3.4, v = 16.0) by Pujol and Ripero.\\ The visual maximum remains unchanged at v = 10.5 $\pm$ 0.1 on or about JD 078.2 = March 31.7 (previous estimate JD 077.7).\\ The negative photographic observation by Merlin (m $>$ 16.0 on March 27.91 = JD 074.41) - when the calculated magnitude was v = 13.5 - remains a puzzle. The limiting magnitude of the original film should be re-determined using the SSC comparison stars.\\ The 'unfiltered' CCD observations are in general agreement with the visual magnitudes but with a larger scatter ($\sigma$ = 0.27 mag). As previously reported, however, the V-band CCD observations, corrected for zero point, depart from the visual curve by up to 0.5 mag during the early decline phase. There is better agreement now. \\ The reality or otherwise of the suspected pre-maximum 'jump' from v $\simeq$ 11.2 on March 29 to 10.4 on March 30 depends critically on the (mainly unreported) magnitudes adopted on these two dates for the comparison stars. Given the standard deviation of 0.2 mag of the visual observations from the cubic fit above, the observations of March 29 and 30 are all well within $\pm 2\sigma$ of the mean curve. These early observations need to be carefully re-examined by the original observers and re-reduced to the scale of the T-B Atlas (or to a revised scale still to come).\\ The B-V color has been increasing at a steady (linear) rate of + 0.015 mag/day since JD 078.0 March 31.5. The two initial observations by Unger on JD 077, suggesting a much more rapid initial reddening should be checked. I am not aware of any previous supernova having shown such a discontinuity in its rate of reddening.\\ Grateful acknowlegement is made to Dr. T. Kato for his many communications and valuable 'photometric history' of SN1993J. \\ G. de Vaucouleurs (gav@astro.as.utexas.edu) *** From Geoff Lawrence: From: SMTP%"gfl@ast1.spa.umn.edu" 8-APR-1993 14:28:41.17 G.F. Lawrence and A. Paulson obtained J,H and K photometry of SN1993J on April 3.39 1993 at the University of Minnesota 0.76 m telescope using an InSb photometer. Standard IR photometric techniques were employed with a 27 arcsec beamsize and a 44 arcsec north/south throw. Calibration was against the IRTF standard stars HR 3888 and HR 5447. The magnitudes, corrected for air mass, are: April 3.39 1993 J 10.91 +/- 0.05 H 10.66 +/- 0.05 K 10.48 +/- 0.08 ****** ************************************************************************** 22) From ALEX@BKYAST.BERKELEY.EDU Sun Apr 11 16:28:17 1993 Subject: SN 1993J update 4-11-93 Dear SN 1993J maniacs: I have asked Peter Boyce to reserve a session exclusively for SN 1993J talks at the Berkeley AAS meeting (June 1993). However, there will certainly be a lot of "late" material; in many cases even "generic" abstacts won't have been submitted by last Friday's official deadline. Thus, at the suggestion of Sumner Starrfield, I will try to reserve a room (sometime after the official SN 1993J session) during which we will have a "late topical session" on SN 1993J. Everyone is welcome to attend. Sometime in May, please let me know whether you would like to present information at the session; I will try to provide at least minimal organization so that we'll make the best use of our time. This will also be a good chance to exchange ideas, brainstorm, etc. --- as we did in Sumner's very successful Nova Cyg 1992 session at the Phoenix AAS meeting (Jan. 1993). Stay tuned for further details... *** Bob Kirshner (kirshner@cfaquincy.harvard.edu") writes: "We are now in the HST schedule for observations of the M81 supernova on Thursday, April 15. These will produce a spectrum from 1600 angstroms to 4400 angstroms using the faint object spectrograph. The UT time of the observations is expected to cover 07:30-12:25. While exactly simultaneous observations are not required, I would be very interested in hearing from people who get observations that overlap and extend these spectra within a day or two of April 15. If there is any change in this plan, I'll send a message." **** Here is an update of SN 1993J photometry from Taichi Kato (Kyoto) (tkato@kusastro.kyoto-u.ac.jp): Updated list of observations obtained by Apr. 10. This table is based on that sent from B. H. Granslo (Norway) (bgranslo@astro.uio.no) For photoelectric photometry with mentioned comparisons, I have tried to reduce them using suggested photometric standards rather than GSC magnitudes. Such data are denoted as "corrected mag". Visual observations from Japan have also been reduced using V sequences in "Supernova Search Chart" (designated as SEQ="TB"). I have not tried to reduce "unfiltered CCD magnitudes" to V magnitudes, but left them as they are with designation "C". Prediscovery observation on Mar. 28.30 UT is corrected according to G. de Vaucoulers using recent photometric data on its comparison. Other CCD and visual magnitudes without referred comparisons are left as they were. Numerous data are included from Mark Kidger's table, table from Gerard de Vaucouleurs (gav@astro.as.utexas.edu)="Mail(gav)". The compilation is only very preliminary and may contain errors. Consult the original data sources for quantitative analysis. Observations marked with * are communicated through this nova network. color band: U,B,V Johnson system R,I deisignated by J (Johnson) and C (Kron-Cousins) g,r Gunn g,r mv visual (close to V) p photographic (miscellaneous materials) C unfiltered CCD comparisons: TB Thompson-Bryan's "Supernova Search Chart" = V + recent photometry, assuming V=11.90 for star B. TA "The Astronomer" sequence (system ?) GP GSC photometric field = V AC AAVSO chart = V? **************************************************************************** 23) From richmond@spiff.Princeton.EDU Tue Apr 13 17:55:50 1993 Subject: Major Revision to Berkeley photometry of 93J Status: RO (some of you may see this message twice - sorry) Hear ye, hear ye! Through a combination of laziness and circumstance, the fair name of the UC Berkeley Supernova Team has been unintentionally besmirched! Several compilations of SN 1993J photometry have included measurements labelled "Berkeley" which are completely inaccurate. I wish to explain the affair and clear our name by giving better, but NOT FINAL and NOT CALIBRATED measurements. The numbers you have seen have simply been the raw instrumental difference between the SN and my star "B" (Corwin's star 4), plus a constant of 11.90. Yes, that's right, in all colors. I didn't mean such values to be distributed, but ... they were. Now, please understand that a "correct" value for the SN's magntiude cannot be found until we derive the transformation coefficients that turn raw, instrumental magnitudes into standard ones on the Landolt system. We haven't managed to find those coefficients, so the numbers you see below are RAW and UNCALIBRATED. Please keep that in mind. What I've done below is to take Corwin's values for the magnitudes of star "B" (his star 4): U B V R I 12.32 12.40 11.90 11.60 11.30 and add to them the raw, instrumental difference in magnitudes between star "B" and the SN. No color corrections have been made! I list the measurements on two telescopes: a 30-inch and a 20-inch (both completely automated, of course :-) Uncalibrated, raw measurements on 30-inch MJD U B V R I (0.03) (0.01) (<0.01) (0.01) (0.01) (typical scatter) ------------------------------------------------ 9076.7 10.70 10.61 10.66 9077.7 9.85 10.95 10.82 10.69 10.58 9079.7 10.79 11.77 11.39 11.13 11.12 9080.7 11.55 12.03 11.68 11.35 11.08 9083.7 11.83 11.35 11.21 9084.72 11.96 12.15 11.74 11.36 11.15 9084.80 11.94 12.15 11.72 11.24 11.15 9085.74 11.90 12.06 11.62 11.10 11.07 9085.82 11.92 12.05 11.61 11.18 11.06 9087.73 11.79 11.85 11.35 10.95 10.88 bad weather 9087.90 11.82 11.83 11.33 10.97 10.87 bad weather 9088.71 11.24 10.82 10.78 I suspect the R filter of having some surface defects that can cause "glitches" in differential measurements if the pointing changes slightly so that stars fall in a different area of the field. Uncalibrated, raw measurements on 20-inch MJD U B V R I (0.04) (0.02) (0.01) (0.01) (0.01) (typical scatter) ------------------------------------------------ 9080.72 11.52 12.02 11.67 11.36 11.08 9083.72 11.89 12.24 11.84 11.47 11.24 9084.74 11.90 12.17 11.73 11.37 11.16 9085.71 11.86 12.05 11.62 11.26 11.07 9087.71 11.69 11.86 11.37 11.04 10.90 bad weather 9088.67 11.56 11.72 11.27 10.94 10.79 9088.72 11.57 11.71 11.26 10.93 10.78 9089.71 11.46 11.61 11.14 10.83 10.70 I hope that this will clear up some of the confusion in people's lists. Please forgive me for troubles I've caused. On behalf of the Berkeley SN Team (Alex Filippenko, Bruno Leibundgut, Dick Treffers and Young Paik), Michael Richmond ************************************************************************* 24) From ALEX@BKYAST.BERKELEY.EDU Tue Apr 13 18:44:52 1993 Subject: SN 1993J: some potentially useful info. 4-13-93 SN 1993J Cult Members: A few notes: (1) There are disturbing discrepancies (at the few percent level, but sometimes much larger) between early-time optical spectra I have received thus far. While some of these might be due to intrinsic changes in SN 1993J, I think most of them are more likely to be subtle calibration errors. The very early-time spectrum was quite featureless; thus, even minor inaccuracies with the relative flux calibration at different wavelengths can lead to false wiggles. To minimize such problems with future spectra, it is important that spectroscopists observe Star B (defined in previous messages) in the same way as SN 1993J (that is, through 2" and 8" slits), and that they calibrate both of these stars relative to the same global flux standards. Through comparison with an adopted "final spectrum," the individual spectra of Star B will allow us to determine small nightly correction factors as a function of wavelength that will be applied to the spectra of SN 1993J. I would appreciate receiving, as soon as convenient, any spectra of SN 1993J that you might want to contribute to the collaboration. Spectra from the first week are particularly important at this stage, as I am trying to assess the reality of subtle features before the theorists spend too much more time trying to reproduce them in their spectral syntheses! Remember to also e-mail me reduced spectra of Star B if you took them. Again, my preferred format is 2-column ASCII (Ang vs. f_nu or f_lambda); e.g., 3200 2.6444e-26 3202 2.6483e-26 3204 2.6277e-26 etc. My e-mail address is alex@bkyast.berkeley.edu *** (2) From George Wallerstein (wall@laban.uu.se , temporarily): Some of the early obs showed sharp H-alpha and possible other sharp lines. This reminds me of Nova RS Oph in 1958 that showed a lot of sharp lines on its first night and then progressively fewer. See PASP 70,537, 1958. This was evidently due to the outburst "lighting up" the envelope that had been contributed by the red giant. The lines weakened as the envelope was swept up by the expanding shell. Since your estimate of the pre SN star is KO Ia it is likely to have had an envelope, as several have suggested. The similarity is quite interesting. The excitation of the coronal lines by an expanding shock was suggested in PASP 73,153,1961. (3) From Michael Richmond (richmond@spiff.Princeton.EDU): Hear ye, hear ye! Through a combination of laziness and circumstance, the fair name of the UC Berkeley Supernova Team has been unintentionally besmirched! Several compilations of SN 1993J photometry have included measurements labelled "Berkeley" which are completely inaccurate. I wish to explain the affair and clear our name by giving better, but NOT FINAL and NOT CALIBRATED measurements. The numbers you have seen have simply been the raw instrumental difference between the SN and my star "B" (Corwin's star 4), plus a constant of 11.90. Yes, that's right, in all colors. I didn't mean such values to be distributed, but ... they were. Now, please understand that a "correct" value for the SN's magntiude cannot be found until we derive the transformation coefficients that turn raw, instrumental magnitudes into standard ones on the Landolt system. We haven't managed to find those coefficients, so the numbers you see below are RAW and UNCALIBRATED. Please keep that in mind. What I've done below is to take Corwin's values for the magnitudes of star "B" (his star 4): U B V R I 12.32 12.40 11.90 11.60 11.30 and add to them the raw, instrumental difference in magnitudes between star "B" and the SN. No color corrections have been made! I list the measurements on two telescopes: a 30-inch and a 20-inch (both completely automated, of course :-) ) Uncalibrated, raw measurements on 30-inch MJD U B V R I (0.03) (0.01) (<0.01) (0.01) (0.01) (typical scatter) ------------------------------------------------ 9076.7 10.70 10.61 10.66 9077.7 9.85 10.95 10.82 10.69 10.58 9079.7 10.79 11.77 11.39 11.13 11.12 9080.7 11.55 12.03 11.68 11.35 11.08 9083.7 11.83 11.35 11.21 9084.72 11.96 12.15 11.74 11.36 11.15 9084.80 11.94 12.15 11.72 11.24 11.15 9085.74 11.90 12.06 11.62 11.10 11.07 9085.82 11.92 12.05 11.61 11.18 11.06 9087.73 11.79 11.85 11.35 10.95 10.88 bad weather 9087.90 11.82 11.83 11.33 10.97 10.87 bad weather 9088.71 11.24 10.82 10.78 I suspect the R filter of having some surface defects that can cause "glitches" in differential measurements if the pointing changes slightly so that stars fall in a different area of the field. Uncalibrated, raw measurements on 20-inch MJD U B V R I (0.04) (0.02) (0.01) (0.01) (0.01) (typical scatter) ------------------------------------------------ 9080.72 11.52 12.02 11.67 11.36 11.08 9083.72 11.89 12.24 11.84 11.47 11.24 9084.74 11.90 12.17 11.73 11.37 11.16 9085.71 11.86 12.05 11.62 11.26 11.07 9087.71 11.69 11.86 11.37 11.04 10.90 bad weather 9088.67 11.56 11.72 11.27 10.94 10.79 9088.72 11.57 11.71 11.26 10.93 10.78 9089.71 11.46 11.61 11.14 10.83 10.70 I hope that this will clear up some of the confusion in people's lists. Please forgive me for troubles I've caused. On behalf of the Berkeley SN Team (Alex Filippenko, Bruno Leibundgut, Dick Treffers and Young Paik), Michael Richmond ***** (4) From Bill Herbst (bill@elysium.astro.wesleyan.edu): Calibrating SN 1993J Photometry Just to let you guys know that the KNAC consortium is getting lots of data on [SN 1993J] and I just sent the following message to people about calibration standards: I mentioned in an earlier note that we are using the field with PG 0918 +029 (Landolt, AJ 104, 340) and the M67 dipper asterism field (Schild PASP 95, 1021) as calibrators. The M67 field is superior in the sense that it has more stars that are brighter, but if we go with it, we should decide whose standard magnitudes to adopt (there are several). I suggest that we use those given by Joner and Taylor (PASP 102, 1004, Table 6). These agree well with Chevalier and Ilovaisky (A&AS 90, 225) and with the UBVI photometry by Montgomery, Marschal and Janes (preprint: AJ 1993). PS: Messages from Priscilla [Benson] and Michael Richmond prompt me to add that since Joner and Taylor don't give B-V values and since there seems to be a pretty good linear relation between Schild's B-V's and both Montgomery, Marschall and Janes' (b-v)0 and Chevalier and Ilovaisky's (b-v)0, I think we should adopt the Schild values of B-V for calibration. For U-B, I guess the best bet would be Montgomery, Marschall and Janes' Table 7; the rather poor blue sensitivity of the Keck [Consortium] CCDs precludes U-B in most cases. As we continue to gather data on SN1993J, it is not too early to reduce M67 or the Landolt field data and derive the transformation coefficient slopes. I would be most interested in seeing how these agree from place to place. The most useful form for compariosn with what we do here would be to send the T values in the following expressions: (B-V) = T(BV)(b-v) + c(bv) (V-R) = T(VR)(v-r) + c(vr) (R-I) = T(RI)(r-i) + c(ri) (R-r) = T(R)(R-I) + c(r) In case anybody wants more detail on the method we use here for reduction, I can send it --- the Keck [Consortium] people already have it. ***** (5) From G. de Vaucouleurs (gav@astro.as.utexas.edu): Foreground (Galactic) color excess in the M81 field. To assist in the interpretation of the photometry/spectrophotometry of SN1993J, I have estimated - by comparison with the standard main sequence of Johnson and Morgan (ApJ 117, 313, 1953) - the color excess of 10 field stars for which UBV magnitudes are available. Sources: J. Neff, McDonald (ApJS 24, 421, 1972), 3 stars (N); A. Sandage, Palomar (AJ 89, 621, 1984), 4 stars (S); H. Corwin, McDonald (IAUC 5742), 3 stars (C). The range of individual values of E(B-V) is from 0.00 to +0.26, with means 0.065 (S), 0.077 (C), and 0.167 (N). For the total sample the unweighted mean is = 0.099 +/- 0.025 (n = 10, s.d. = 0.080) or, after rejection of two largest values, 0.069 +/- 0.017. With the standard Av/E = 3.3, this implies Av = 0.30 or 0.23, and A(B) = 0.43 or 0.30. For comparison, published values for the reddening in the M81 field range from A(B) = 0.43 (Jacoby et al. ApJ 344, 704, 1988) to 0.30 (RC2, 1976), 0.17 (Tonry, ApJ 373, L1, 1991), 0.16 (RC3, 1991 after Burstein and Heiles), and 0.07 (Sandage, loc.cit), for an unweighted average of = 0.23 +/- 0.06. These figures may be compared with the much higher total extinction quoted by R. Humphreys for the suspected precursor star. **** ******************************************************************** 25) From ALEX@BKYAST.BERKELEY.EDU Thu Apr 15 22:11:22 1993 Subject: SN 1993J magnitudes 4-14-93 SN 1993J Die-Hards: Here are a few recent compilations of optical magnitudes. (1) From Guy M. Hurst (GMH@ASTROPHYSICS.STARLINK.RUTHERFORD.AC.UK) THE ASTRONOMER/BAA Start JD= Database of visual result Star: SN 1993J in M81 2449000 (Sequence as per message to H.Corwin 930413). No Obs Logged: 72 178 Observer UT Date UT Dec JD Estimate mv Cl I Surname 28/03/93 0.860 75.36 11.8 Garcia, F. 29/03/93 0.010 75.51 11.3 F Garcia 29/03/93 0.170 75.67 11.2 McGrath, T. 29/03/93 0.820 76.32 11.0 J Ripero 29/03/93 0.820 76.32 11.2 F Pujol 29/03/93 0.880 76.38 11.3 Pujol, F. 29/03/93 0.880 76.38 11.3 Garcia, F. 29/03/93 0.950 76.45 11.1 F Garcia 30/03/93 0.100 76.60 11.0 R Treffers 30/03/93 0.537 77.04 10.4 M Yamada 30/03/93 0.845 77.35 10.3 P Schmeer 30/03/93 0.865 77.37 10.6 1 G Poyner 30/03/93 0.887 77.39 C(1)v(2)D 10.5 2 G Hurst 30/03/93 0.890 77.39 C-2 10.5 2 M Taylor 30/03/93 0.900 77.40 11.0 O Midtskogen 30/03/93 0.906 77.41 10.5 P Schmeer 30/03/93 0.916 77.42 10.6 G Poyner 30/03/93 0.928 77.43 C-1 10.4 1 M Taylor 30/03/93 0.930 77.43 C-2 10.5 Bengtsson, H. 30/03/93 0.940 77.44 10.5 J Shanklin 30/03/93 0.950 77.45 V=C 10.3 M Taylor 30/03/93 0.989 77.49 10.6 G Poyner 31/03/93 0.080 77.58 10.7 R Panther 31/03/93 0.087 77.59 a(1)v(1)c 10.0 2 D Moore 31/03/93 0.100 77.60 10.0 Kohl, R. 31/03/93 0.130 77.63 10.5 F Cianciolo 31/03/93 0.130 77.63 10.5 Cainciolo, F. 31/03/93 0.130 77.63 10.5 Wren, W. 31/03/93 0.130 77.63 10.6 O Midtskogen 31/03/93 0.400 77.90 D+4 10.3 2 P Hornby 31/03/93 0.424 77.92 10.5 M Yamada 31/03/93 0.440 77.94 10.5 M Yamada 31/03/93 0.576 78.08 10.5 M Kato 31/03/93 0.596 78.10 103-2; 113+4 10.6 Takahashi, S. 31/03/93 0.840 78.34 10.5 M Zanotta 31/03/93 0.969 78.47 10.7 W Hasubick 31/03/93 0.970 78.47 C(2)v(1)D 10.6 J Shanklin 01/04/93 0.055 78.56 10.4 Beauchamp, D. 01/04/93 0.083 78.58 10.7 P Schmeer 01/04/93 0.130 78.63 10.4 Cianciolo, F. 01/04/93 0.453 78.95 103-2; 107+3 10.5 S Takahashi 01/04/93 0.465 78.96 10.4 M Iida 01/04/93 0.480 78.98 10.6 M Momose 01/04/93 0.538 79.04 10.4 T Kato 01/04/93 0.604 79.10 11.0 S Kiyota 01/04/93 0.622 79.12 10.4 Y Watanabe 01/04/93 0.632 79.13 11.2 H Shioi 01/04/93 0.726 79.23 10.9 Watanabe, T. 01/04/93 0.750 79.25 11.0 H Koyama 01/04/93 0.795 79.29 10.5 K Hirosawa 01/04/93 0.810 79.31 10.5 Vanmunster, T. 01/04/93 0.863 79.36 C(6)v(1)D 10.7 W Mizon 01/04/93 0.874 79.37 11.2 J Toone 01/04/93 0.997 79.50 V=D 10.7 R Fleet 02/04/93 0.042 79.54 10.6 Kratz, D. 02/04/93 0.170 79.67 10.8 Cianciolo, F. 02/04/93 0.170 79.67 11.4 C Spratt 02/04/93 0.310 79.81 D-4 11.1 2 P Hornby 02/04/93 0.439 79.94 11.0 M Yamada 02/04/93 0.453 79.95 D(1)v(5)F 10.9 S Takahashi 02/04/93 0.585 80.08 11.1 M Watanabe 02/04/93 0.608 80.11 11.5 Sakuma, S. 02/04/93 0.716 80.22 10.5 Abe, S. 02/04/93 0.843 80.34 11.3 Poyner, G. 02/04/93 0.843 80.34 D-3;E+2 11.3 1 G Poyner 02/04/93 0.844 80.34 E+4 11.4 2 M Taylor 02/04/93 0.847 80.35 C(6)v(1)D 10.7 W Mizon 02/04/93 0.847 80.35 D(2)v(1)F 11.5 R McKim 02/04/93 0.860 80.36 D(2)v(1)E 11.4 1 J Shanklin 02/04/93 0.865 80.37 E(1)v(2)F 11.8 G Marriott 02/04/93 0.867 80.37 11.3 B Granslo 02/04/93 0.876 80.38 D-3;E+4;D(2)v(3)E 11.2 1 M Taylor 02/04/93 0.881 80.38 F+6;D(2)v(3)E 11.2 1 M Taylor 02/04/93 0.884 80.38 F(1)v(5)G 12.0 2 G Hurst 02/04/93 0.890 80.39 D-3;E+4 11.2 2 M Taylor 02/04/93 0.895 80.40 C-10 11.4 2 K Middleton 02/04/93 0.906 80.41 D-3;E+4 11.2 1 M Taylor 02/04/93 0.950 80.45 D(8)v(4)F 11.5 H Bengtsson 02/04/93 0.950 80.45 V=F 11.9 T Haymes 02/04/93 0.962 80.46 11.5 M Porter 02/04/93 0.969 80.47 D(3)v(1)E 11.5 N Evans 02/04/93 0.972 80.47 D(2)v(1)E 11.4 R Fleet 03/04/93 0.011 80.51 11.2 B Granslo 03/04/93 0.127 80.63 V=E 11.8 2 J Day 03/04/93 0.150 80.65 11.4 Buta, R. 03/04/93 0.170 80.67 11.2 Wren 03/04/93 0.280 80.78 11.5 W Johnson 03/04/93 0.448 80.95 D(3)v(2)E 11.3 S Takahashi 03/04/93 0.574 81.07 103(5)v(1)E 11.5 Takahashi, S. 03/04/93 0.660 81.16 11.8 R Kushida 03/04/93 0.680 81.18 11.9 Y Kushida 03/04/93 0.710 81.21 11.4 Onodera, O. 03/04/93 0.831 81.33 11.0 Dahle, H. 03/04/93 0.837 81.34 11.2 Dahle, H. 03/04/93 0.862 81.36 D(7)v(4)E 11.4 Westlund, M. 04/04/93 0.029 81.53 11.6 Schmeer, P. 04/04/93 0.083 81.58 10.8 Kratz, D. 04/04/93 0.856 82.36 V=E 11.8 2 R McKim 04/04/93 0.893 82.39 V=E 11.8 3 M Taylor 04/04/93 0.901 82.40 F+1 11.8 B Ewen-Smith 04/04/93 0.950 82.45 F+2 11.7 1 J Shanklin 05/04/93 0.030 82.53 11.8 J Bortle 05/04/93 0.120 82.62 11.9 Schmeer, P. 05/04/93 0.150 82.65 11.6 Levy, S. 05/04/93 0.271 82.77 11.8 R Royer 05/04/93 0.310 82.81 F-3 12.2 2 P Hornby 05/04/93 0.431 82.93 116(2)V(1)F 11.8 Takahashi, S. 05/04/93 0.437 82.94 12.2 Kiyota, S. 05/04/93 0.444 82.94 12.0 Yamada, M. 05/04/93 0.500 83.00 12.0 Onodera, O. 05/04/93 0.517 83.02 12.0 Kushida, R. 05/04/93 0.524 83.02 12.2 Watanabe, T. 05/04/93 0.566 83.07 12.1 Watanabe, Y. 05/04/93 0.573 83.07 11.9 Koyama, H. 05/04/93 0.624 83.12 12.2 Abe, S. 05/04/93 0.642 83.14 12.1 Shioi, H. 05/04/93 0.684 83.18 12.0 Watanabe, S. 05/04/93 0.950 83.45 F(1)v(3)G 12.1 1 J Shanklin 05/04/93 0.954 83.45 F+1 11.8 B Ewen-Smith 06/04/93 0.174 83.67 12.1 Bryan, J. 06/04/93 0.260 83.76 11.7 W Dillon 06/04/93 0.260 83.76 F+2 11.7 2 P Hornby 06/04/93 0.428 83.93 116(4)v(2)F 11.8 Takahashi, S. 06/04/93 0.442 83.94 11.9 Yamada, M. 06/04/93 0.849 84.35 V=E 11.8 M Taylor 06/04/93 0.856 84.36 F+1 11.9 B Ewen-Smith 06/04/93 0.861 84.36 E(1)v(3)F 11.8 2 J Day 06/04/93 0.864 84.36 F(1)v(4)G 12.0 2 G Hurst 06/04/93 0.865 84.37 E(1)v(3)F 11.8 2 R Caswell 06/04/93 0.870 84.37 F(1)v(3)G 12.1 1 J Shanklin 06/04/93 0.880 84.38 E(1)v(1)F 11.8 T Haymes 06/04/93 0.882 84.38 V=E;F+5 11.6 M Taylor 06/04/93 0.895 84.40 F+2 11.7 2 G Poyner 07/04/93 0.170 84.67 F+1 11.8 2 P Hornby 07/04/93 0.230 84.73 11.6 W Wren 07/04/93 0.431 84.93 11.7 Yamada, M. 07/04/93 0.483 84.98 11.7 Funada, M. 07/04/93 0.522 85.02 11.8 Watanabe, T. 07/04/93 0.537 85.04 12.0 Y Sekino 07/04/93 0.596 85.10 V(1)E(2)F 11.7 Takahashi, S. 07/04/93 0.933 85.43 F+2 11.7 B Ewen-Smith 08/04/93 0.080 85.58 11.4 C Heil 08/04/93 0.100 85.60 11.5 Richmond, M. 08/04/93 0.150 85.65 F-1 12.0 2 P Hornby 08/04/93 0.417 85.92 11.9 S Kiyota 08/04/93 0.451 85.95 10.9 C Iida, M. 08/04/93 0.501 86.00 11.8 Y Sekino 08/04/93 0.521 86.02 D(5)v(2)E 11.5 S Takahashi 08/04/93 0.692 86.19 11.5 T Watanabe 08/04/93 0.840 86.34 D(8)v(4)F 11.5 H Bengtsson 08/04/93 0.864 86.36 D(8)v(3)E 11.5 M Westlund 08/04/93 0.901 86.40 F+1 11.8 B Ewen-Smith 09/04/93 0.040 86.54 11.5 H Bengtsson 09/04/93 0.190 86.69 F+1 11.8 2 P Hornby 09/04/93 0.200 86.70 11.5 W Dillon 09/04/93 0.250 86.75 11.4 R Royer 09/04/93 0.443 86.94 11.6 M Yamada 09/04/93 0.481 86.98 11.5 M Yamada 09/04/93 0.503 87.00 D(5)v(2)E 11.5 S Takahashi 09/04/93 0.503 87.00 11.7 M Iida 09/04/93 0.507 87.01 11.7 M Funada 09/04/93 0.523 87.02 11.7 M Iida 09/04/93 0.626 87.13 11.3 T Watanabe 09/04/93 0.635 87.13 11.6 Y Watanabe 09/04/93 0.686 87.19 E+2;F+3 11.6 H Shioi 09/04/93 0.830 87.33 D(2)v(9)E 10.9 2 T Aldrich 09/04/93 0.835 87.33 D(8)v(3)E 11.5 M Westlund 09/04/93 0.941 87.44 V=F 11.9 1 G Hurst 10/04/93 0.093 87.59 V(3)E(2)F 11.6 2 J Day 10/04/93 0.422 87.92 D(3)v(2)E 11.4 S Takahashi 10/04/93 0.437 87.94 11.1 S Kiyota 10/04/93 0.476 87.98 11.6 N Makiguchi 10/04/93 0.557 88.06 11.5 M Yamada 10/04/93 0.626 88.13 11.5 M Yamada 10/04/93 0.780 88.28 11.7 M Yamada 11/04/93 0.947 89.45 E(1)v(1)F 11.8 2 G Hurst 12/04/93 0.429 89.93 D-5 11.2 S Takahashi 12/04/93 0.508 90.01 F+2 11.7 M Iida Regards, Guy M Hurst I am grateful to Taichi Kato in Japan and other contributors in several countries for help with his database. We are attempting to collect the full estimate for all visual results to assist in any re-reduction. Enquiries to: Guy M Hurst, The Astronomer, 16 Westminster Close, Basingstoke, Hants, RG22 4PP Tel/Fax: +44 256471074 **** (2) From Iain Steele (IST@STARLINK.LEICESTER.AC.UK) Subj: Earlyish Photometry of SN1993J reduced at last! Using Corwin's callibration data for Star B (B=12.4,V=11.9,R=11.6,I=11.3) I now obtain the following revised CCD photometry of SN1993J. Telescope is 16inch (ie. 40 cm) Cass Reflector. Date March 30.93 B=10.96, V=10.75, R=10.69, I=10.55 March 33.89 B=12.18, V=11.60, R=11.24, I=11.12 (ie. April 2.89) Bad weather has so far prevented further observations (Note the V magnitudes are 0.5 magnitudes fainter than those I gave previously which were based on the HST GSC V=11.4 magnitude for Star B - this correction pulls our data much more into line with that from La Palma etc.) *** (3) From Tashi Kato (kato@kusastro.kyoto-u.ac.jp) SN1993J photometry update Updated list of observations obtained by Apr. 14. This table is based on that sent from B. H. Granslo (Norway) (bgranslo@astro.uio.no) For photoelectric photometry with mentioned comparisons, I have tried to reduce them using suggested photometric standards rather than GSC magnitudes. Such data are denoted as "corrected mag". Visual observations from Japan have also been reduced using V sequences in "Supernova Search Chart" (designated as SEQ="TB"). I have not tried to reduce "unfiltered CCD magnitudes" to V magnitudes, but left them as they are with designation "C". Prediscovery observation on Mar. 28.30 UT is corrected according to G. de Vaucoulers using recent photometric data on its comparison. Other CCD and visual magnitudes without referred comparisons are left as they were. Numerous data are included from Mark Kidger's table, table from Gerard de Vaucouleurs (gav@astro.as.utexas.edu)="Mail(gav)", table from Ralph A.M.J. Wijers (rw@ourania.Princeton.EDU)="News(rw)", The Astronomer/BAA visual database(GMH@ASTROPHYSICS.STARLINK.RUTHERFORD.AC.UK="Nova(gmh)". The compilation is only very preliminary and may contain errors. Consult the original data sources for quantitative analysis. Observations marked with * are communicated through this nova network. color band: U,B,V Johnson system R,I designated by J (Johnson) and C (Kron-Cousins) g,r Gunn g,r mv visual (close to V) p photographic (miscellaneous materials) C unfiltered CCD comparisons: TB Thompson-Bryan's "Supernova Search Chart" = V + recent photometry, assuming V=11.90 for star B. TA "The Astronomer" sequence (system ?) GP GSC photometric field = V GSC GSC (~ V-0.44) AC AAVSO chart = V? SAO SAO (?) **** ************************************************************************* 26) From ALEX@BKYAST.BERKELEY.EDU Fri Apr 16 11:49:49 1993 Subject: SN 1993J updates 4-16-93 SN 1993J'ers: Here are three messages about various topics: (1) From Kurt Weiler (kweiler@shimmer.nrl.navy.mil) Subj: SN1993J Radio Information Update N. Panagia, Space Telescope Science Institute and University of Catania; S. D. Van Dyk and K. W. Weiler, Naval Research Laboratory report that the available radio observations of SN 1993J are already sufficient for initial modelling of the progenitor star and projection of the likely evolution of the radio emission. Applying the Chevalier mini-shell model which has been shown appropriate for other radio supernovae (Weiler, et al. 1986, ApJ 301, 790) with the usual assumptions for the stellar wind from the red supergiant progenitor star and assigning a normal spectral index of -0.7 and an index for the emission decay rate of -0.7, the model yields a presupernova mass loss rate of about 2 x 10 ^-6 Msun/yr. The stellar evolution models of Maeder & Meynet (1988, A&AS, 76, 411) then imply a ZAMS mass for the progenitor of SN1993J of <15 Msun. Comparison with other known radio supernovae, however, indicate that SN1993J is quite similar in radio properties to SN1980K and SN1981K, and may represent the lower end of the mass range of stars which can explode as Type II supernovae. This relative consistency of properties may indicate a relatively firm lower limit to the radio properties of Type II supernovae, and therefore a possible minimum distance indicator. Our modelling also results in predictions of the radio flux density to be expected from SN1993J at various frequencies to assist planning observations at other telescopes. Taking 26 March 1993 as Day = 1, the expected peak flux density at different radio frequencies is ~20 mJy on Day 20 (14 April) at 23 GHz, ~20 mJy on Day 25 (19 April) at 15 GHz, ~25 mJy on Day 40 (4 May) at 8.4 GHz, ~30 mJy on Day 55 (19 May) at 5 GHz, and ~35 mJy on Day 130 (2 August) at 1.4 GHz. After peak, the flux density at each frequency should decline approximately as t^-0.7. **** (2) From Janet Mattei (aavso@cfa0.harvard.edu) CONSISTENT COMPARISON STAR MAGNITUDE MEASUREMENTS DESPERATELY NEEDED for SN 1993J in NGC 3031 Photoelectric (V) and preferably also B, R, I measurements of the comparison stars shown on the Thompson-Bryan and AAVSO preliminary charts are desperately needed in order to obtain homogeneous brightness estimates of Supernova 1993J in NGC 3031. This need was also pointed out by Dr. Gerard de Vaucouleurs earlier. Presently there are the following finder charts of the NGC 3031 field: 1. AAVSO PRELIMINARY CHART, indicated with designation 0947+69. Made in 1979 by T. Fetterman, an active AAVSO observer and supernova searcher. In the absence of a chart of this galaxy for visual observers, it was developed to aid observers identify the field stars and to provide approximate brightness estimates for these stars. The bright magnitudes (brighter than about 9.0 to 9.5) are from the SAO Catalog, in which magnitudes come from various sources and so are often not homogeneous. The faint magnitudes are visual eye estimates by T. Fetterman. These visual eye estimates may have a zero point problem and/or inconsistancies. Due to uncertainties in the magnitudes of the comparison stars, this chart was indicated by the AAVSO as preliminary and thus subject to revision. The circulation of this chart was very limited. 2. THOMPSON-BRYAN CHART. Published by Cambridge University Press, well-drafted field of NGC 3031, printed with white stars on black background. The comparison star magnitudes come from the following sources: a. Photoelectric sequences i. One set [underlined] is from A. R. Sandage (Astron. Journ. 89, 621, 1984), and includes mostly stars northeast of NGC 3031. Observers have reported that these magnitudes are consistent within themselves. ii. One set [overlined] is from H. G. Corwin, and includes stars in the field of the galaxy and close to the supernova. Observers have reported brightness differences for some of the stars in this set. b. Visual magnitudes From AAVSO preliminary chart 0947+69 [double-underlined]. Not all the stars on the preliminary chart are entered on the Thompson-Bryan chart. c. Source(s) unknown Also on this Thompson-Bryan chart are magnitudes for which the source is not indicated. These stars do not have any markings (e.g., underlining or overlining). Thompson and Bryan circulated a limited number of an early edition of their finder chart, with stars indicated as black dots on a white background. The chart of SN 1993J distributed with AAVSO Alert Notice 169 is this chart. Regrettably, we noticed after distribution that this early version is different from the published one, in that some comparison star magnitudes in the early version are different from the ones in the published chart. Why these magnitudes were changed and what their source is are not known to me. 3. GUIDE STAR CATALOG CHART. Magnitudes were independently obtained by the Space Telescope Science Institute. For some stars shown in this field, the GSC magnitudes are quite different from photoelectric magnitudes mentioned above. Thus, in the finder charts mentioned above, there are at least five sources of comparison star magnitudes. These magnitudes are not always consistent within and between sources. In order to revise the brightness estimates reported by visual observers and those doing differential photometry, and to follow the optical behavior of this supernova, photoelectric measurements of ALL comparison stars with magnitudes on the Thompson-Bryan chart need to be made as soon as possible. Also, it is essential that all observers report what comparison stars they have used and are using in making magnitude estimates. Janet A. Mattei AAVSO Director **** (3) From Roberta Humphreys (roberta@aps1.spa.umn.edu) Notes on the Progenitor: Reddening, Variability, and Luminosity Roberta Humphreys, Greg Aldering, and Kris Davidson University of Minnesota 1. Nature of progenitor: Determining the nature of the progenitor obviously depends on whether we can resolve a single image,and if not, fit the observed energy distribution with a single composite spectrum. The energy distribution from the UBVR photometry we reported in IAU Circ # 5739 can be fit by an unreddened late F -type supergiant, an early F-type supergiant with Av 1.2 mag or an early A type supergiant with Av about 2 mag. Taken at face value our colors are consistent with a late A or early F-type supergiant with Av 1.2 -1.5 mag. The BVR colors reported by Perelmuter ( Mar 1990) are consistent with an unreddened late G-type supergiant or a reddened mid to late F -type supergiant with Av 1 -1.5 mag. If we look only at the V-R colors and assume no reddening then a late K-type supergiant is possible. But with any reddening even the V-R color becomes too blue for a red supergiant. Most people are reporting V and V-R photometry for the possible progenitor but multicolor photometry ( especially B and U) is needed to constrain the nature of the progenitor and to determine the reddening. Also the progenitor image is being described as stellar. With our digitized scans we have been careful to isolate what appears to be a stellar image from possible background contamination and nearby stars, and on each plate we measured an image that was basically stellar with the same x,y center to 0.15 arcsec with respect to a reference grid. Evenso the image on the blue plate was more elliptical. Thus, at the distance of M81 it is probable that this image is not single. We have now scanned additional plates of M81 including a short exposure J (blue) and F (red) plates from March 21 1985. The plates were scanned in multi-level isodensity thresholds. On the J plate the image separates into at least two components. One appears to still be blended and the other agrees in position to within 0.13 arcsec with the centroid of the short R image ( which did not resolve into separate images). This positional agreement corresponds to 2 parsecs at the distance of M81. At the highest isodensity levels, the B and R images have diameters 20 microns which is 6 parsecs in M81. Thus these images may still be blended. The corresponding magnitudes for the images on these short exposure plates are B=21.8 and R=19.9 mag. If V-R =0.8mag ( see #3 below), then the corresponding V is 20.7 mag and B-V = 1.1 mag. [ The scale of these 4-meter plates is 18.6 arcsec/mm. The encoders on the APS read to 0.366 micron with a repeatability of 1 micron.] Observers with CCD images may be able to deconvolve their images. Not surprisingly, it is possible to fit the observed energy distribution of the progenitor by a wide range of composite spectra from a mid K star ( the latest) plus an early B star (the earliest) to a late G star plus an early A star. These fits assume no reddening. Increased reddening restricts the range of allowed composite spectra by decreasing any contribution from a red supergiant. However the possible variability may put important constraints on any proposed composite. 2. Reddening: As Richmond reported in IAU Circ 5739 there is high reddening across the face of M81, as indicated from the UV images- Av 1.5 mag ( Hill et al 1992); the radio and Halpha measurements by Kaufman et al (1987) show an average reddening of 1.1 mag +/- 0.4 with no gradient from the nucleus. In a study of the red supergiants Humphreys et al (1986) found Av from 1 -1.5 mag. Thus there is significant reddening throughout M81. SN1993J may be in a hole, but given its location in a spiral arm near a prominent dust lane this seems unlikely. Reddening should be considered when discussing the luminosity of the supernova and the possible progenitor. 3. Variability: The photometry reported for the possible progenitor shows considerable evidence for variability with the R mag posssibly ranging from 20.7 to 19.0. Summary of photometry for possible progenitor: Date V V-R (R) B-V U-B Source Mar 21-23 1982 20.8 0.9 19.9 0.6 0.3 4-meter plates Jan 21 1985 21.5 0.8 20.7 CCD Pal 1.5-meter (transformed from r,g-r) Mar 21 1985 (20.7) 19.9 1.1 4-meter plates Mar 1990 20.0 0.7 19.3 1.1 CCD KPNO Jan 24 1992 19.7: 0.8 19.0: CCD Hiltner 2.5 meter Oct 2 1992 20.0 CCD KPNO 0.9 meter Mar 16-23 1993 20.0 Haute-Provence CCD There are several very important points about the variability: 1. The V-R color has remained essentially constant at 0.8 +/- 0.1 mag. This is very remarkable. All luminous irregular variables show changes in color coinciding with the expansion and contraction of their atmospheres. This is also true for M supergiants. No change in color with this much variation in magnitude means a real change in the total luminosity of the star. This could be explained by the ejection of shells. 2. An R mag of about 20 appears three or more times in this list. If the star is varying between max. and min., one would not expect random measurements to give the same magnitude. This may mean that an R of 20 and a corresponding V of 20.8 represent some kind of quiescent state for the star, and are indicative of the star's true luminosity. 3. In a 1984 paper Sandage ( AJ,89,621) lists the magnitudes for several irregular blue variables in M81 for the period 1910 to about 1955. One of these I2 is quite close to SN1993J. He lists variations for this star of a few 0.1's. Thus if the progenitor was varying at that time by one or more magnitudes, I think he would have noticed it. 4. Finally, the variablity may not be real and only due to differences in reduction. Because the object is obviously in a crowded region, the magnitudes may depend on where the background is set. 4. Luminosity: Using the unreddened distance modulus for M81 of 27.5 - 27.7 and no reddening for the progenitor then Mv is -7.6 at visual max. But with 1 -1.5 mag Av, then Mv becomes -8.6 to -9.1 and the star is in the regime of the cool hypergiants near the upper luminosity boundary in the HRD. The above luminosities are all for the brightest observed mv of near 20 mag. A V mag near 20.8mag may be more representative of the progenitor's true luminosity. If V=20.8 then Mv is -6.8 or about -7.8 with 1 mag of reddening. For the SN, if max light was mv 10.3 the Mv was -17.3 or withh reddening Mv -18.3 to -18.8. 5. Needed: There are numerous photographic plates of M81 as well as CCD images of this famous galaxy. It is critical to measure as many as possible to document this stars variability. According to a paper by Sandage (1984) plates exist as far back as 1910! Zickgraf et al (1990 PASP,102,925) have published a faint UBVR CCD sequence for M81 and Sandage (1984 AJ 89,621) has a BV photoelectric sequence that can be used for calibration. It is especially important to measure magnitudes in B and U. Efforts should be made to deconvolve the image. ************************************************************************** 27) From ALEX@BKYAST.BERKELEY.EDU Fri Apr 16 12:17:08 1993 Subject: PS 4-16-93 SN 1993J'ers: Attached is Taichi Kato's most recent photometry update. I received it just after sending you my previous message. Alex Filippenko **** (tkato@kusastro.kyoto-u.ac.jp) SN1993J photometry update Updated list of observations obtained by Apr. 15. Thanks to the observers, numerous new data and revisions urged me a new compilation. This table is based on that sent from B. H. Granslo (Norway) (bgranslo@astro.uio.no) For photoelectric photometry with mentioned comparisons, I have tried to reduce them using suggested photometric standards rather than GSC magnitudes. Such data are denoted as "corrected mag". Visual observations from Japan have also been reduced using V sequences in "Supernova Search Chart" (designated as SEQ="TB"). I have not tried to reduce "unfiltered CCD magnitudes" to V magnitudes, but left them as they are with designation "C". Prediscovery observation on Mar. 28.30 UT is corrected according to G. de Vaucoulers using recent photometric data on its comparison. Other CCD and visual magnitudes without referred comparisons are left as they were. Numerous data are included from Mark Kidger's table, table from Gerard de Vaucouleurs (gav@astro.as.utexas.edu)="Mail(gav)", table from Ralph A.M.J. Wijers (rw@ourania.Princeton.EDU)="News(rw)", The Astronomer/BAA visual database(GMH@ASTROPHYSICS.STARLINK.RUTHERFORD.AC.UK="Nova(gmh)". The compilation is only very preliminary and may contain errors. Consult the original data sources for quantitative analysis. Observations marked with * are communicated through this nova network. color band: U,B,V Johnson system R,I designated by J (Johnson) and C (Kron-Cousins) g,r Gunn g,r mv visual (close to V) p photographic (miscellaneous materials) C unfiltered CCD comparisons: TB Thompson-Bryan's "Supernova Search Chart" = V + recent photometry, assuming V=11.90 for star B. TA "The Astronomer" sequence (system ?) GP GSC photometric field = V GSC GSC (~ V-0.44) AC AAVSO chart = V? SAO SAO (?) ***************************************************************************** 28) From ALEX@BKYAST.BERKELEY.EDU Mon Apr 19 22:55:16 1993 Subject: SN 1993J update 4-19-93 SN 1993J fans: Here are some updates. Alex Filippenko **** Alain Porter (porter@noao.edu) reports that he has a compilation of published UBVRI photometry of stars in the M67 dipper field (used by many for calibration purposes). He is willing to send it on an individual basis to anyone who asks. **** Harold Corwin (hgcjr@ipac.caltech.edu) finds that the GSC magnitudes of the comparison stars are too bright by about 0.45 mag with a scatter of around 0.1 mag -- but there are two ringers which are much further off. It does not look like there is a significant color term in the transformation. Here are the details: Daniel Green at the IAU Central Telegram Bureau in Cambridge tells me that there has been some confusion about the identity of the stars in the UBVRI sequence that was published in IAUC 5742. In short, I can find no problem with the identifications of the stars in either my own records, or in the Circular. Here is the longer story: I have checked my original finding chart of the field and find that I adopted the sequence nomenclature of Brandt, Kalinowski, and Rosen (ApJS 24, 421, 1972) on that chart; the nomenclature in my nova net message of 5 April is based on the right ascensions from the GSC. The data were transferred correctly to the Thompson-Bryan chart of N3031 from my photoelectric reduction output, and the GSC identifications -- based on the GSC positions in my table sent to Drs. Green and Marsden -- in IAUC 5742 are also correct. The following table collects all the photoelectric data which I know about now for stars in the Thompson-Bryan field. The sources (given in the "Other" column followed by the star identification within the source) are: JN -- J. Neff, in Brandt, Kalinowski, and Rosen. 1972, ApJS 24, 421. BH -- Brandt and Hiltner, ibid. AS -- Sandage. 1984, AJ 89, 621. HC -- Corwin. 1993, IAUC 5742. TK -- Kato. 1993, April 6-11, nova net messages. OI -- Okyudo and Ishida (in Kato. 1993, April 6-11, nova net messages). Unfortunately, I do not know the sources of the other sequence data which G. de Vaucouleurs has requested (the AAVSO sequence, and the sequence from "The Astronomer"). [I have since had notes from Guy Hurst and Janet Mattei on these. The sequence in "The Astronomer" is essentially that from the Thompson-Bryan Atlas, while the AAVSO sequence is a preliminary visually- determined one.] Nor do I find any optical photometry for star "C" aside from the GSC value of 14.59. Using de Vaucouleurs's zero point correction, this becomes V = 14.96. S. Odewahn, C.E. Woodward, and J. Bailey give JHK data for stars "A", "B", and "C" in a nova net message of 9 April. Within the errors, star "C" has the same colors as stars "A" and "B". This suggests V = 14.4 for star "C", in poor agreement with the corrected estimate from GSC. M. Kidger, however, has reported that star "C" has been listed as a possible variable. While the estimates I've just made point to the same conclusion, we obviously need more photometry for this star. With two exceptions, all the stars are in the GSC whose positions I quote. For the two exceptions (Sandage's stars 2 and 21), I have estimated the positions with respect to nearby GSC stars. The label on the Thompson-Bryan chart for GSC 4383-1031 is incorrectly given as "11.6." This should either be changed to "11.7" (to report the V magnitude given by Brandt, et al), or to "11.6 overline" to reflect the V which I measured. Finally, note that the U-B, V-R, and V-I values from my observations are on the Cousins system, while other U-B values are (probably) on the Johnson system. Dr. Kato also reports his I-band photometry for star "A" to be on the Cousins system. GSC Other TB Chart ID RA (B1950.0) Dec V B-V U-B V-R V-I 4383- (from GSC) 0434 HC-1 12.4 overline 09 50 25.6 +69 15 38 12.45 0.63 0.11 0.39 0.76 0308 HC-2 11.8 overline 09 50 35.9 +69 20 04 11.78 0.69 0.16 0.40 0.80 1037 JN-A 14.1 09 51 10.9 +69 04 58 14.08 0.96 0.36 -- -- 1037 BH-A 14.1 14.05 0.98 -- -- -- 0340 "C" 14.0 dbluline 09 51 17.9 +69 15 02 Variable?? 1031 HC-3 11.6 09 51 21.2 +69 05 34 11.62 0.53 -0.04 0.33 0.69 1031 JN-B 11.6 11.73 0.46 0.05 -- -- 1031 BH-B 11.6 11.73 0.51 -- -- -- 0928 HC-4 11.9 overline 09 51 36.1 +69 14 44 11.90 0.50 -0.08 0.30 0.60 0928 "B" 0565 TK-A (Not labelled) 09 51 39.7 +69 16 00 11.41 0.56 -- -- 0.63 0565 OI-A 11.41 -- -- -- -- 1123 HC-5 13.6 overline 09 52 11.1 +69 09 41 13.65 0.57 -0.09: 0.34 0.69 0633 SA-13 13.8 underline 09 52 29.0 +69 22 07 13.78 0.58 0.16: -- -- 0094 SA-9 13.9 underline 09 52 39.4 +69 23 17 13.92 0.80 0.42 -- -- 0224 HC-6 11.8 underline 09 52 39.7 +69 24 18 11.85 1.30 1.29 0.68 1.29 0224 SA-8 11.8 underline 11.84 1.32 1.33 -- -- 0935 SA-14 12.9 underline 09 52 42.0 +69 21 43 12.89 0.73 0.17 -- -- 0598 SA-A6 15.0 underline 09 52 50.4 +69 19 29 14.99 0.69 0.14 -- -- 1158 JN-C 14.9 09 52 53.8 +69 23 49 14.88 0.67 0.06 -- -- 1158 BH-C 14.9 14.88 0.67 -- -- -- 0322 SA-A5 15.3 underline 09 52 58.8 +69 21 17 15.28 1.01 0.69 -- -- 0790 JN-D 14.6 09 52 59.8 +69 24 15 14.58 0.68 -0.02 -- -- 0790 BH-D 14.6 14.56 0.67 -- -- -- SA-2 15.2 underline 09 53 05 +69 15.8 15.15 1.09 -- -- -- 1023 HC-7 14.7 overline 09 53 17.7 +69 24 54 14.73 0.46 0.12: 0.36 0.60: 1023 SA-11 14.7 overline 14.77 0.44 -- -- -- 1028 SA-1 13.7 underline 09 53 27.7 +69 15 46 13.71 0.77 -- -- -- 0244 SA-15 13.0 underline 09 53 33.9 +69 25 03 12.99 1.20 -- -- -- 0860 SA-19 10.3 underline 09 53 58.0 +69 11 44 10.32 0.39 -0.06 -- -- 1005 SA-6 14.0 underline 09 54 08.2 +69 23 16 14.03 0.95 -- -- -- 0262 SA-5 15.3 underline 09 54 11.6 +69 17 54 15.31 0.65 -- -- -- 0582 SA-20 15.0 underline 09 54 17.4 +69 16 18 15.05 0.74 -- -- -- SA-21 15.5 underline 09 54 20 +69 14.9 15.50 0.86 -- -- -- Harold Corwin, hgcjr@ipac.caltech.edu IPAC, M/S 100-22, Caltech, Pasadena, CA 91125, USA ******** David Jeffery provides the following discussion: David J. Jeffery e-mail: jeffery@cfa.harvard.edu tel: 617-496-5203 FAX: 617-495-7467 address: Harvard-Smithsonian Center for Astrophysics MS-19, 60 Garden St., Cambridge, MA 02138, U.S.A. Hi Alex I have some remarks on the early IUE spectra of SN 1993J that you might like to distribute in your electronic journal which I've been calling SN~1993J Updates. I would like to emphasize that many others are examining the IUE spectra, and they will have seen more of them than I, and in most cases will know far more about analyzing interstellar and circumstellar matter from IUE spectra. So any valid remarks I make will probably be old news to many. I have examined low resolution short wavelength (\sim 1150--1950 A) IUE spectra from Mar.~30 to April 4 and low resolution long wavelength (\sim 2000--3300 A) IUE spectra from Mar.~30--31. These spectra were emailed to me by George Sonneborn who collaborates with Robert Kirshner (my boss) on IUE observations of supernovae. The March~30 spectra seem to be the earliest taken; March 30 was about the epoch of maximum light. The first spectrum rises blueward right across the IUE band from about 3300 A to about 1240 A. (I consider the spectra in the f_lambda representation.) >From about 1200 to 1220 A, there is the solar coronal Lyalpha emission feature which is of no interest here. Below 1200 A the IUE spectra are quite noisy, but more examination than I have done might yield some information. By March 31, the UV spectrum had become rather flat, but declining somewhat redward. After March 31, the short wavelength IUE spectra decline redward and there appears to be a broad (i.e., about 80 A) depression centered at about 1630 at least before April~4. Apart from the Lyalpha emission, the 1630 depression, and another broad depression center at about 2200 A (see below), there are no other obvious broad features in the spectra. An interpretation of the early SN~1993 UV spectra, that is already widely discussed (e.g., Wheeler 1993), is that we are seeing a circumstellar wind at least for March 30--31. The circumstellar wind has been heated by the UV flash of the supernova outburst and is cooling rapidly on March 30--31. The wind is moving slowly. High resolution spectra from March 30 show strong narrow emission features at the wavelengths of the N V doublet, 1238.81 and 1242.80 A; I have only seen these spectra on a FAX. The 1238.81 emission is weaker and narrower (only about 100 km/s); the 1242.80 feature is about 20 % higher, has a breadth of about 200 km/s, and exhibits a narrow blueshifted absorption of about 50 km/s in width which appears to be a P~Cygni absorption. It is odd that the 1242.80 feature is more prominent since the N V 1242.80 line has only half the gf of the N V 1238.81 line. If these features are due to N V in the circumstellar wind, then they suggest wind velocities up to 200 km/s and a wind temperature (assuming LTE) of order 20000--30000 K for March 30. It may be that after March 31, we are seeing the supernova ejecta and that accounts for the depression that appears at about 1630 A. Broad absorptions are what one would expect from rapidly expanding ejecta and are what I had expected to see in the earliest IUE spectra. However, optical P~Cygni lines were only seen on April~6.3 (Wheeler \&~Clocchiatti 1993). Thus, 1630~A depression may just be some sort of modulation of the circumstellar flux. The low resolution spectra are quite noisy, but show several narrow absorption lines. The low resolution mode of the IUE has a resolution of about 1 in 300 or 1000 km/s (5 A at 1500 A and 10 A at 3000 A). It is probable that none of the narrow features is resolved. One absorption at about 1545 A is probably the C IV 1549.1 ground level multiplet and is due to the circumstellar material. This absorption disappears after April 1; presumably, the circumstellar material temperature has fallen too low by then for C IV. The other narrow absorptions are probably interstellar lines. I have identified the Mg II 2798 resonance doublet with the two lines barely, but definitely resolved. The Fe II 2343, 2382, and 2599 ground level lines also appear in the long wavelength IUE specta; these Fe II lines are all strongest lines of widely spread multiplets; I can't identify any of the weaker multiplet lines. In the short wavelength IUE spectra, I identify the Si II 1263, 1308, and 1531 ground level multiplets and the Al II 1671 and C II 1335 ground level multiplets. These lines are typical UV lines due to the interstellar medium (e.g., De Boer, Jura, \&~Shull 1987). Another narrow absorption is at about 1795 A. It seems too far to the blue to be due to the comparatively weak Si II 1814 multiplet, but there is a difficulty with the wavelength calibration that may allow this identification (see below). The absorption may, of course, be circumstellar. Except for the Mg II resonance lines, none of the absorptions are clearly resolved into component absorptions either due to the various multiplet lines or different interstellar media at different velocities in the Milky Way and M81. This is not surprising given the low resolution of the low resolution mode of the IUE and the fact that M81 has a small heliocentric velocity (-43 km/s; Tully 1988). The centroids of absorption features in the IUE spectra all seem to be shifted by varying amounts of order a few angstroms both to the red and the blue. This probably because a definitive wavelength calibration has not been done. High resolution IUE and HST spectra will probably allow a much better study of the interstellar lines. HST spectra were scheduled to be acquired on April~15 as part of the SINS program (Kirshner~\etal 1988). Since all the people connected with that observation have been away from CfA since then, I have had no information on what was acquired; presumably the HST observations will soon be subjected to study. The broad depression in the IUE spectra centered at about 2200 A is almost certainly due to the 2175 A bump in the interstellar extinction (e.g., Cardelli, Clayton \&~Mathis 1989; Mathis 1990). This bump is believed to be due to carbon grains possibly in the form of graphite. The bump is a regular feature of UV extinction and is present for all values of R_V. It has a FWHM varying between about 400 and 800 A. The depression in the IUE spectra seems narrower than this and has a breadth at the base line I draw of only about 400 A. The IUE spectra are particularly noisy in the 2000--2400 A region, and so the existence of the depression could be challenged. However, given the presence of the interstellar lines and the existence of foreground extinction (Burstein \&~Heiles [1984] report a foreground E(B-V) of 0.0375), an extinction depression is expected. I have tried to eliminate the depression by correcting the spectra using R_V=3.1 (the standard value for the diffuse interstellar medium) and extinction law of Cardelli~\etal (1989). The most satisfactory E(B-V) value I find is 0.10 and I estimate an uncertainty of 0.03. An E(B-V) value as high as 0.2 must I think be completely ruled out since correcting the spectra with E(B-V)=0.2 creates a prominent bump centered at about 2150 A. I hope people will quickly emend an errors I have made. I'd like to thank Jason Pun for some information on IUE observations. References \refpaper Cardelli, J. A., Clayton, G. C., \&~Mathis, J. S. 1989, ApJ, 345, 245. % extinction law. \refpaper Burstein, D., \&~Heiles, C. 1984, ApJS, 54, 33. % Galactic foreground extinctions. \refedited De Boer, K. S., Jura, M. A., \&~Shull, J.~M. 1987, in Exploring the Universe with the {\it IUE} Satellite, ed.~Y.~Kondo, W.~Wamsteker, A.~Boggess, M.~Grewing, C.~De~Jager, A.~L.~Lane, J.~L.~Linsky, \&~R.~Wilson (Dordrecht: Reidel), 485. % diffuse and dark clouds in the interstellar medium \refindent Kirshner, R.~P., Blades, J.~C., Branch, D., Chevalier, R. A., Fransson, C., Panagia, N., Wagoner, R.~V., \&~Wheeler, J.~C. 1988, {{\it HST} Proposal SINS: The Supernova INtensive Study} \refpaper Mathis, J. S. 1990, Ann. Rev. Aston. Astrophys., 28, 37. % on interstellar dust and extinction. \refbook Tully, R. B. 1988, Nearby Galaxies Catalog (Cambridge: Cambridge Univ.~Press). % catalog of nearby galaxies (the Tully catalog) with velocities % heliocentric and systematic and distances and more. \refindent Wheeler, J. C. 1993, SN~1993J Updates, Wed Apr 7 13:24:26 1993 \refindent Wheeler, J. C., \&~Clocchiatti, A. 1993, IAU Circ., No.~? % see also SN~1993J Updates, Wed Apr 7 23:22:27 1993 ****** From Kurt Weiler (kweiler@shimmer.nrl.navy.mil) SUPERNOVA 1993J IN NGC 3031 M. P. Rupen and R. A. Sramek, National Radio Astronomy Observatory; S. D. Van Dyk and K. W. Weiler, Naval Research Laboratory; and N. Panagia, Space Telescope Science Institute, report new observations of SN 1993J made on 13 April 1993 at 6 cm wavelength (4.86 GHz) with the Very Large Array in 'B' configuration. Two separate observing sessions on that day yield flux density values of 0.33 +/- 0.08 and 0.28 +/- 0.05 mJy. These measurements confirm the possible detection of radio emission at 6 cm on that same day recently reported by Strom (IAUC 5762). Such a value is also consistent with the model results reported by Panagia, Van Dyk, and Weiler in IAUC 5762. From the model, SN 1993J is expected to strengthen rapidly in this radio band and reach a peak of about 30 mJy by 20 May 1993. Radio monitoring with the VLA is continuing on a nearly daily basis at this and other wavelengths in order to follow the supernova's rapidly changing behavior. ****** Here is Taichi Kato's most recent photometry update: (tkato@kusastro.kyoto-u.ac.jp) SN1993J photometry update Updated list of observations obtained by Apr. 19. Numerous data are included from following sources. Mark Kidger's table Gerard de Vaucouleurs (gav@astro.as.utexas.edu)="Mail(gav)" B. H. Granslo (bgranslo@astro.uio.no="Mail(grl)" Ralph A.M.J. Wijers (rw@ourania.Princeton.EDU)="News(rw)" The Astronomer/BAA visual database (GMH@ASTROPHYSICS.STARLINK.RUTHERFORD.AC.UK="Nova(gmh)". Observations marked with @ are communicated through this nova network. New entries and revisions are marked with "*". color band: U,B,V Johnson system R,I designated by J (Johnson) and C (Kron-Cousins) g,r Gunn g,r mv visual (close to V) p photographic (miscellaneous materials) C unfiltered CCD comparisons: TB Thompson-Bryan's "Supernova Search Chart" = V + recent photometry, assuming V=11.90 for star B. TA "The Astronomer" sequence (system ?) GP GSC photometric field = V GSC GSC (~ V-0.44) AC AAVSO chart = V? SAO SAO (?) pass filter ----------------------------------------------------------------------------- @ @ << differential photometry without photoelectrically measured comparisons >> @ @ from Braeside Observatory: @ (braeside@naucse.cse.nau.edu) @ @ SN1993j @ Sky Conditions: @ Night 15 APR: fair, cirrius at end. @ Night 18 APR: fair, cirrius at end. @ Comparison star used: SAO015026 V=8.8, K? @ Check star used: SAO015009 V=9.6, Sp unknown @ JD is geo. @ Extinction is stored seasonal. @ Differentials are standardized to the Johnson system. @ @ Braeside Observatory, Flagstaff: braeside@naucse.cse.nau.edu @ April 18, 1993 at 2:05 p.m. 0.4m Cass Page 1 @ @ STARNAME JD UTDATE UTTIME X HA V B_V U_B TYP @ ========== ========= ======== ====== ==== ===== ======= ======= ======= === @ SN1993J 9092.8990 04/15/93 093433 1.79 W5:44 1.641 -0.587 0.000 V @ SN1993J 9092.9067 04/15/93 094541 1.83 W5:55 1.643 -0.571 0.000 V @ SN1993J 9092.9092 04/15/93 094917 1.85 W5:59 1.657 -0.539 0.000 V @ SN1993J 9092.9118 04/15/93 095300 1.87 W6:03 1.731 -0.610 0.000 V @ SN1993J 9092.9143 04/15/93 095632 1.88 W6:06 1.656 -0.554 0.000 V @ SN1993J 9092.9180 04/15/93 100159 1.91 W6:11 1.701 -0.577 0.000 V @ SN1993J 9092.9204 04/15/93 100525 1.92 W6:15 1.720 -0.592 0.000 V @ SN1993J 9095.6985 04/18/93 044552 1.22 W1:06 1.599 -0.523 0.000 V @ SN1993J 9095.7041 04/18/93 045350 1.23 W1:14 1.608 -0.473 0.000 V @ SN1993J 9095.7078 04/18/93 045910 1.23 W1:20 1.576 -0.468 0.000 V @ SN1993J 9095.7102 04/18/93 050237 1.23 W1:23 1.578 -0.496 0.000 V @ SN1993J 9095.7129 04/18/93 050631 1.24 W1:27 1.604 -0.521 0.000 V @ SN1993J 9095.7204 04/18/93 051719 1.24 W1:38 1.624 -0.505 0.000 V @ SN1993J 9095.7228 04/18/93 052046 1.25 W1:41 1.542 -0.487 0.000 V @ SN1993J 9095.7289 04/18/93 052940 1.25 W1:50 1.543 -0.510 0.000 V @ SN1993J 9095.7340 04/18/93 053700 1.26 W1:58 1.562 -0.459 0.000 V @ SN1993J 9095.7366 04/18/93 054038 1.27 W2:01 1.572 -0.496 0.000 V @ SN1993J 9095.7390 04/18/93 054407 1.27 W2:05 1.610 -0.513 0.000 V ***************************************************************************** 29) From ALEX@BKYAST.BERKELEY.EDU Fri Apr 23 13:10:00 1993 Subject: SN 1993J update 4-23-93 SN 1993J enthusiasts, Here are a few notes, as well as Taichi Kato's photometry update. Now that the supernova has a reasonably normal spectrum, with well-developed P-Cygni line profiles, it is important to continue spectroscopy over a wide wavelength range and photometry in as many bands as possible (to get the bolometric light curve). We should be able to get an excellent distance to SN 1993J using the Expanding Photosphere Method, and this will be compared with other estimates (Cepheids, etc.). Potential contributors of spectra and photometry are reminded to e-mail reduced data to me as soon as possible, preferably in 2-column ASCII format. Cheers, Alex Filippenko *** From Gerard de Vaucouleurs (gav@astro.as.utexas.edu) If you can reach the Spanish observers, Messrs. F. Garcia, J. Ripero, F. Pujol, and D. Rodriguez, could you please ask them to precisely identify their comparison stars and adopted magnitudes for their critically important early observations of SN1993J on March 28-31. Likewise it would be important to obtain similar information from Mr. A. Neely for his observations of March 28 and 29. Please send any information you may be able to elicit to some of the 'nodes' in the SN1993J club [in particular, to Alex Filippenko] for re-diffusion to all interested parties. Thank you for your help. G. de Vaucouleurs (gav@astro.as.utexas.edu) ***** From Roberta Humphreys (roberta@aps1.spa.umn.edu) and Greg Aldering: [Alex's editorial note: I think the evidence for a rather low reddening to SN 1993J is quite strong (weakness of 2200 A feature, weakness of interstellar lines, very blue color at maximum, shape of spectrum after maximum, etc.). Thus, I personally think that Roberta's low-reddening option 3 (see below) is more realistic than the high-reddening option, regardless of the derived reddening to other stars within 20" of SN 1993J.] Notes on Blended Image and Possible Composite Spectrum Roberta Humphreys and Greg Aldering The image of the probable progenitor is defintely blended and the observed energy distribution must be a composite of two or more stars. The measured magnitudes of the progenitor object now cover the wavelength range from U to I and allow for the possibility of modeling the energy distribution. The recently reported I magnitude by Blakeslee and Tonry ( circ #5758) has been very important for tieing down the contribution from a red component. ( They reported V=20.8 and I=19.4) We have also measured UBV and R photographic magnitudes for several stars within about 20 arcsec of the SN in an attempt to get a realistic estimate of the reddening in that region. We have sufficient multi- color data on 3 of these objects to estimate their reddening. These 3 are 10 to 15 arcsec from the SN. We find Av values of .8, 1.0 and 1.5 mag. and adopt Av = 1 mag for fitting the observed energy distribution. Adopted magnitudes for the energy distribution: I= 19.4 , R= 20.0, V= 20.8, B= 21.8 , U= 21.7 mag. We decided to use V= 20.8 because of the many measurements of the progenitor at this brightness. We calculated a grid of different fits to the observed energy distribution for different combinations of supergiant spectral types using published colors and used a chi-squared test to select the best fits. A few acceptable fits included an O star or early B-type supergiant but because of the lack of Halpha emission we decided to rule them out ( see Richmond circ. # 5739 ). These fits are for two stars only. Of course more might be present. 1. For Av = 1.0 mag the range of acceptable combinations are: a. G8 I + B5 I 33% at V ( percent contribution of hot component at V) + B8 I 37% " + A2 I 48% " b. K2 I + B5 I 48% " + B8 I 53% " + A2 I 68% " c. K3 I + B5 I 57% " + B8 I 63% " + A2 I 80% " 2. As an example adopt the K2 star, we then derive for a true distance modulus of 27.6 mag: Mv Mbol Mv Mbol B5 -7.0 -7.8 + K2 -7.1 -7.7 B8 -7.1 -7.6 + K2 -7.0 -7.6 A2 -7.4 -7.6 + K2 -6.6 -7.2 Thus the red component ( which is probably most people's choice for the SN ) is a 4500K star with a luminosity appropriate for a star with an initial mass near 15 Msun. 3. If one wants a fit with no reddening, the results for the cool component aren't much different with Mbol about -7.2 but the blue component is much less luminous at Mbol of -5.5 mag. Needed: a good, deep CCD V image obtained under good seeing prior to outburst. We have good deep J and F plates under good seeing that show an association of stars 1 - 2 or more magnitudes fainter than the progenitor image within 10 arcsec. There are even a few faint images on our U plate. However our V plate ( IIaD ) doesn't go as deep. If we could get some V magnitudes for the same stars we would have the potential of measuring a C-M diagram for the association which would be very interesting. Anyone interested in a collaboration please get in touch with us. *** From Guy Hurst (GMH@ASTROPHYSICS.STARLINK.RUTHERFORD.AC.UK) THE ASTRONOMER SEQUENCE FOR SN 1993J There still appears to be uncertainty over the basis of the TA sequence in some e-mail exchanges. Comparison stars and individual estimates were included in my first database listing. The Astronomer chart was first distributed as long ago as 1983 Apr 3 as part of the UK Nova/Supernova Patrol. A revised chart also plotting the supernova was distributed on Early Warning Circular 133 on March 30, within hours of the discovery announcement. A graphical chart was also sent on TA Electronic Circular 722 on 1993 Apr 1 (21.25UT) Although the Thompson/Bryan chart has some common sequence stars, it was our aim to restrict the number of comparisons to those providing sufficient reasonable 'steps' for a visual observer and minimising work if a re-reduction was necessary. If one of observers used a star not on our 'restricted list' below then only its magnitude (without decimal point) appears in our listing under 'estimate'. TA Star GSC 4383. Mag Source A 848 8.90 AAVSO B 738 9.40 AAVSO C 860 10.32 Sandage D 384 10.70 AAVSO E 308 11.78 Corwin F 928 11.90 Corwin G 434 12.45 Corwin H 935 12.89 Sandage P 1123 13.65 Corwin K 633 13.78 Sandage R 94 13.92 Sandage L 574 14.10 AAVSO M 1023 14.73 Corwin/Sandage/Neff N 598 14.99 Sandage Q 322 15.28 Sandage References were given in Harold Corwin's e-mail relayed 20/4/93. Kind regards, Guy M Hurst The Astronomer, UK Updated 20/4/93 ********* From Taichi Kato (tkato@kusastro.kyoto-u.ac.jp): SN1993J photometry update Updated list of observations obtained by Apr. 22. Numerous data are included from following sources. Mark Kidger's table Gerard de Vaucouleurs (gav@astro.as.utexas.edu)="Mail(gav)" B. H. Granslo (bgranslo@astro.uio.no="Mail(grl)" Ralph A.M.J. Wijers (rw@ourania.Princeton.EDU)="News(rw)" The Astronomer/BAA visual database (GMH@ASTROPHYSICS.STARLINK.RUTHERFORD.AC.UK="Nova(gmh)". Observations marked with @ are communicated through this nova network. New entries and revisions are marked with "*". color band: U,B,V Johnson system R,I designated by J (Johnson) and C (Kron-Cousins) g,r Gunn g,r mv visual (close to V) p photographic (miscellaneous materials) C unfiltered CCD comparisons: TB Thompson-Bryan's "Supernova Search Chart" = V + recent photometry, assuming V=11.90 for star B. TA "The Astronomer" sequence (system ?) GP GSC photometric field = V GSC GSC (~ V-0.44) AC AAVSO chart = V? SAO SAO (?) ***** *************************************************************************** 30) From ALEX@BKYAST.BERKELEY.EDU Wed Apr 28 18:29:13 1993 Subject: SN 1993J update 4-28-93 SN 1993J junkies: The supernova is definitely beginning to fade! It is very important to closely monitor the brightness in all possible bands; it could fall rapidly to the late-time tail, or it might proceed more slowly (staying on the "plateau" for a while longer). We really don't know how much of a hydrogen envelope the star had at the time of the explosion. Also of great importance are low-dispersion spectra during the upcoming bright run. As was the case last month, many large telescopes will NOT be equipped with low-dispersion optical spectrographs; thus, much of the burden will fall on the smaller telescopes. I urge you to get data as frequently (and over as large a wavelength range) as possible. Of course, efforts to get infrared photometry and spectroscopy should continue. We ultimately need to derive a bolometric light curve of the supernova (or as close to bolometric as possible). This won't be possible without the infrared data. Below are some notes from others, including a useful reminder from Roberta Humphreys. Cheers, Alex Filippenko ****** >From Roberta Humphreys (roberta@aps1.spa.umn.edu) Hi Alex, Your points about the reddening problem in M81 are valid except that the 2200A feature cannot be used to set a limit or to define the extinction in the visual. It and the UV extinction relation are highly variable in our galaxy and the LMC and SMC have very different relations from the what we call the galactic UV extinction relation. Several years ago while working with UV spectra of some hot stars in M31 and M33 I found that the galactic UV extinction relation way over corrected the 2200A feature producing a bump in the energy distribution. The LMC relation worked much better. In subsequent work by Phil Massey both of these galaxies he has shown that a UV extinction laew like the LMC is the correct one for both M31 and M33! We don't have any idea what is appropriate for M81. While the visual/near-IR extinction extinction "law" appears to be very uniform in our galaxy and apparently in others not so for the UV. There are several stars even in our galaxy with high visual extinction and NO 2200 A feature. Not only is this strange but also can be very misleading without additional information. Regards, Roberta ***** >From Kurt Weiler (kweiler@shimmer.nrl.navy.mil) SN 1993J in NGC 3031 S. D. Van Dyk & K. W. Weiler, Naval Research Laboratory; R. A. Sramek & M. P. Rupen, National Radio Astronomy Observatory; and N. Panagia, Space Telescope Science Institute, report that new observations of SN 1993J made on 1993 April 22.47 UT with the Very Large Array in `B' configuration show that the source currently has a flux density at 1.3-cm wavelength (22.5 GHz) of 39.94 +/- 0.53 mJy; the radio light curve at this frequency appears to be flattening as expected from preliminary model predictions (IAUC 5762). A slow decline in the flux density at 1.3-cm should commence shortly. The supernova also has flux densities of 37.35 +/- 0.34 mJy at 2.0-cm wavelength (14.9 GHz), 11.77 +/- 0.07 mJy at 3.6-cm wavelength (8.4 GHz), and 1.70 +/- 0.07 mJy at 6 cm wavelength (4.86 GHz). This flux density evolution is consistent with previous model estimates (IAUC 5762) to within the predictive capability of the model from the few data points available at that time. Revised estimates will be issued shortly. Radio monitoring is continuing on a nearly daily basis at these and other wavelengths in order to follow the supernova's rapidly changing behavior. **** From Gerard de Vaucouleurs (gav@astro.as.utexas.edu) Subj: Errors in IAUC5774 (SN1993J) URGENT MESSAGE TO ALL SN1993J INVESTIGATORS The following observations of SN1993J taken from IAUCircular Nr 5774, originating from Xing-Long Observatory do not make sense! There must have been a transmission error or something. The V magnitudes (column 2) are not too far off (~0.1 mag too faint), but the U-B, B-V colors are off by several tenths, and the red and IR colors are 1.5-2 mag off. DO NOT USE UNTIL CLARIFICATION IS RECEIVED FROM CAMBRIDGE AND BEIJING. G. de Vaucouleurs (gav@astro.as.utexas.edu) ******* data 2 Zheng: V vs JD (updated 4/26/93) JD-2449000 V i 085.07 11.71 % Zheng+, U-B=-0.51,B-V=0.24,V-Rj=-1.10,V-Ij=-1.16 087.10 11.49 % Zheng+, U-B=-0.43,B-V=0.36,V-Rj=-1.11,V-Ij=-1.19 088.07 11.45 % Zheng+, U-B=-0.31,B-V=0.25,V-Rj=-1.05,V-Ij=-1.11 089.08 11.22 % Zheng+, U-B=-0.37,B-V=0.39,V-Rj=-1.14,V-Ij=-1.32 090.13 11.13 % Zheng+, U-B=-0.31,B-V=0.37,V-Rj=-1.15,V-Ij=-1.21 091.10 11.08 % Zheng+, U-B=-0.34,B-V=0.32,V-Rj=-1.15,V-Ij=-1.24 092.12 10.99 % Zheng+, U-B=-0.32,B-V=0.34,V-Rj=-1.22,V-Ij=-1.21 093.09 10.99 % Zheng+, U-B=-0.25,B-V=0.28,V-Rj=-1.10,V-Ij=-1.18 094.03 10.92 % Zheng+, U-B=-0.34,B-V=0.37,V-Rj=-1.12,V-Ij=-1.19 095.05 10.84 % Zheng+, U-B=-0.27,B-V=0.43,V-Rj=-1.14,V-Ij=-1.28 096.06 10.86 % Zheng+, U-B=-0.23,B-V=0.46,V-Rj=-1.17,V-Ij=-1.24 097.07 10.89 % Zheng+, U-B=-0.13,B-V=0.53,V-Rj=-1.15,V-Ij=-1.20 098.05 10.97 % Zheng+, U-B=-0.13,B-V=0.56,V-Rj=-1.09,V-Ij=-1.16 099.05 11.07 % Zheng+, U-B=-0.10,B-V=0.60,V-Rj=-1.04,V-Ij=-1.13 101.05 11.12 % Zheng+, U-B=-0.12,B-V=0.81,V-Rj=-1.04,V-Ij=-1.13 ****** Taichi Kato's latest photometry update (tkato@kusastro.kyoto-u.ac.jp) SN1993J photometry update (new and revised entries) List of observations obtained by Apr. 26. Full list is always available upon request. ------------------------------------------------------------------------------- YYYY MM DD.DDD MAGN MS SEQ OBSERVER NOTES SOURCE ------------------------------------------------------------------------------- 1982 03 21(-23) 20.8 V *Humpreys, R. 4-m plate IAUC 5739 1982 03 21(-23) 19.9 R *Humpreys, R. 4-m plate IAUC 5739 1982 03 21(-23) 21.4 B *Humpreys, R. 4-m plate IAUC 5739 1982 03 21(-23) 21.7 U *Humpreys, R. 4-m plate IAUC 5739 1990 03 ?? 20.0 V *Perelmuter KPNO, CCD IAUC 5736 1990 03 ?? 19.3 R *Perelmuter KPNO, CCD IAUC 5736 1992 01 24. 19.7: V *Magnier Hilter 2.5-m, CCD IAUC 5741 1992 01 24. 18.9: R *Magnier Hilter 2.5-m, CCD IAUC 5741 1993 03 28.86 11.8 mv T1 *Garcia, F. 25-cm f/3.9 refl. IAUC 5731 * DISCOVERY OBSERVATION * Corrected, original Mail(grl) * mag. = 12.0 1993 03 28.89 11.6 C T1 *Rodriguez, D. 20-cm f/5 refl.+ AAVSO 169 * ST-4 CCD * Corrected, original Mail(grl) * mag. = 11.8 1993 03 29.82 11.0 mv T1 *Ripero, J. 33.5-cm f/4.5 refl. AAVSO 189 1993 03 29.82 11.2 mv T1 *Pujol, F. 31-cm f/5 refl. TA E731 1993 03 29.82 11.0 C T1 *Rodriguez, D. 20-cm f/4 refl. + CCD IAUC 5731 1993 03 29.95 11.1 mv T1 *Garcia, F. 25-cm f/3.9 refl. IAUC 5733 1993 03 30.19 10.70 V *Richmond Berkeley News 1993 03 30.19 10.61 R C *Richmond Berkeley News 1993 03 30.19 10.66 I C *Richmond Berkeley News 1993 03 30.870 10.8 mv TB+*Midtskogen, O. 31.6cm refl. 130x Mail(grl) 1993 03 30.887 10.5 mv TA *Hurst, G. M. 44-cm refl., class 2 TA E731 * Basingstoke, England 1993 03 30.89 10.5 mv TA *Taylor, M. D. Wakefield, England TA E731 1993 03 30.899 10.6 mv TA+*Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 03 30.91 10.0 C T1 *Rodriguez, D. 20-cm f/4 refl. + CCD Mail(grl) 1993 03 30.95 10.3 mv *Taylor, M. D. Estimate C=V TA E731 1993 03 31.130 10.5 mv TA+*Midtskogen, O. 31.6-cm refl. 130x Mail(grl) * revised magnitude 1993 03 31.22 9.85 U *Richmond Berkeley News 1993 03 31.22 10.95 B *Richmond Berkeley News 1993 03 31.22 10.82 V *Richmond Berkeley News 1993 03 31.22 10.69 R C *Richmond Berkeley News 1993 03 31.22 10.58 I C *Richmond Berkeley News 1993 03 31.40 10.3 mv TA *Hornby, P. TA E731 1993 03 31.88 10.5 mv *Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 03 31.89 10.6 mv *Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 01.84 10.4 mv *Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 01.87 10.5 mv T1 *Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 02.20 10.79 U *Richmond Berkeley News 1993 04 02.20 11.77 B *Richmond Berkeley News 1993 04 02.20 11.39 V *Richmond Berkeley News 1993 04 02.20 11.13 R *Richmond Berkeley News 1993 04 02.20 11.12 I *Richmond Berkeley News 1993 04 02.310 11.1 mv TB *Hornby, P. Nova(gmh) 1993 04 02.831 11.0 mv TB+*Dahle, H. 20.3-cm SCT 133x Mail(grl) * Oslo, Norway 1993 04 02.837 11.2 mv TA+*Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 02.855 11.58 C TA+*Helbak, K. 20-cm f/4 + ST-4 CCD Mail(grl) * Slependen, Norway 1993 04 02.863 11.57 C TA+*Helbak, K. 20-cm f/4 + ST-4 CCD Mail(grl) 1993 04 02.872 11.57 C TA+*Helbak, K. 20-cm f/4 + ST-4 CCD Mail(grl) 1993 04 02.91 11.86 B *Hanzl IAUC 5747 1993 04 02.91 11.36 V *Hanzl IAUC 5747 1993 04 03.011 11.3 mv TA+*Granslo, B. H. 20.3-cm SCT, 123x Mail(grl) 1993 04 03.20 11.55 U *Richmond Berkeley News 1993 04 03.20 12.03 B *Richmond Berkeley News 1993 04 03.20 11.68 V *Richmond Berkeley News 1993 04 03.20 11.35 R C *Richmond Berkeley News 1993 04 03.20 11.08 I C *Richmond Berkeley News 1993 04 03.22 11.52 U *Richmond Berkeley News 1993 04 03.22 12.02 B *Richmond Berkeley News 1993 04 03.22 11.67 V *Richmond Berkeley News 1993 04 03.22 11.36 R C *Richmond Berkeley News 1993 04 03.22 11.08 I C *Richmond Berkeley News 1993 04 03.820 11.8 mv TA *Midtskogen, O. 31.6cm refl. 130x Mail(grl) 1993 04 03.84 11.3 mv T1 *Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 03.93 11.2 mv T1 *Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 04.007 11.9 mv TA+*Andersen, O. I. 20.3-cm refl. 135x Mail(grl) * Malm, Norway 1993 04 04.23 12.1 mv TB *Rhoads Princeton News 1993 04 05.11 11.80 C HC *Ferguson, D. C., 10-cm refr.+LYNXX CCD Mail(grl) *Morton, T. L., Baldwin Wallace Coll. *and Snyder, D. B. Berea, Ohio 1993 04 05.85 11.9 mv T1 *Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 06.009 11.9 mv TA+*Granslo, B. H. 20.3-cm refl. 135x Mail(grl) * Malm, Norway 1993 04 06.092 11.9 mv TA+*Granslo, B. H. 15.2-cm refl. 135x Mail(grl) 1993 04 06.20 11.83 V *Richmond Berkeley News 1993 04 06.20 11.35 R C *Richmond Berkeley News 1993 04 06.20 11.21 I C *Richmond Berkeley News 1993 04 06.22 11.89 U *Richmond Berkeley News 1993 04 06.22 12.24 B *Richmond Berkeley News 1993 04 06.22 11.84 V *Richmond Berkeley News 1993 04 06.22 11.47 R C *Richmond Berkeley News 1993 04 06.22 11.24 I C *Richmond Berkeley News 1993 04 06.26 11.7 mv T1 *Dillon, W. G. Missouri City, TX IAUC 5757 1993 04 06.85 11.9 mv T1 *Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 06.87 12.0 mv T1 *Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 06.87 12.0 C T1 *Rodriguez, D. 20-cm f/4 refl. + CCD Mail(grl) 1993 04 06.89 12.0 mv T1 *Carvajal, J. 31-cm f/4.5 refl. Mail(grl) 1993 04 06.903 12.0 mv TA+*Granslo, B. H. 15.2-cm refl. 135x Mail(grl) 1993 04 07.22 11.96 U *Richmond Berkeley News 1993 04 07.22 12.15 B *Richmond Berkeley News 1993 04 07.22 11.74 V *Richmond Berkeley News 1993 04 07.22 11.36 R C *Richmond Berkeley News 1993 04 07.22 11.15 I C *Richmond Berkeley News 1993 04 07.24 11.90 U *Richmond Berkeley News 1993 04 07.24 12.17 B *Richmond Berkeley News 1993 04 07.24 11.73 V *Richmond Berkeley News 1993 04 07.24 11.37 R C *Richmond Berkeley News 1993 04 07.24 11.16 I C *Richmond Berkeley News 1993 04 07.30 11.94 U *Richmond Berkeley News 1993 04 07.30 12.15 B *Richmond Berkeley News 1993 04 07.30 11.72 V *Richmond Berkeley News 1993 04 07.30 11.24 R C *Richmond Berkeley News 1993 04 07.30 11.15 I C *Richmond Berkeley News 1993 04 07.57 11.44 U *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 07.57 11.95 B *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 07.57 11.71 V *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 07.57 12.81 R J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 07.57 12.87 I J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 07.83 11.9 mv T1 *Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 07.84 12.1 mv T1 *Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 07.91 12.0 C T1 *Rodriguez, D. 20-cm f/4 refl. + CCD Mail(grl) 1993 04 08.042 11.5 mv TA+*Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 08.08 11.7 mv TB *Rhoads Princeton News 1993 04 08.08 11.5 mv TB *Wijers News 1993 04 08.21 11.86 U *Richmond Berkeley News 1993 04 08.21 12.05 B *Richmond Berkeley News 1993 04 08.21 11.62 V *Richmond Berkeley News 1993 04 08.21 11.26 R C *Richmond Berkeley News 1993 04 08.21 11.07 I C *Richmond Berkeley News 1993 04 08.24 11.90 U *Richmond Berkeley News 1993 04 08.24 12.06 B *Richmond Berkeley News 1993 04 08.24 11.62 V *Richmond Berkeley News 1993 04 08.24 11.10 R C *Richmond Berkeley News 1993 04 08.24 11.07 I C *Richmond Berkeley News 1993 04 08.32 11.92 U *Richmond Berkeley News 1993 04 08.32 12.05 B *Richmond Berkeley News 1993 04 08.32 11.61 V *Richmond Berkeley News 1993 04 08.32 11.18 R C *Richmond Berkeley News 1993 04 08.32 11.06 I C *Richmond Berkeley News 1993 04 08.83 12.1 mv T1 *Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 08.83 12.0 mv T1 *Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 08.840 11.5 mv TA *Bengtsson, H. Nova(gmh) 1993 04 08.864 11.5 mv TA *Westlund, M. 20.3-cm SCT Nova(gmh) 1993 04 08.868 11.4 mv TA+*Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 08.89 11.9 mv T1 *Carvajal, J 31-cm f/4.5 refl. Mail(grl) 1993 04 08.948 11.6 mv TA+*Skjaeraasen, O. 20.3-cm SCT 77x Mail(grl) 1993 04 08.985 11.6 mv TA+*Skjaeraasen, O. 20.3-cm SCT 77x Mail(grl) 1993 04 09.028 11.6 mv TA+*Skjaeraasen, O. 20.3-cm SCT 77x Mail(grl) 1993 04 09.04 11.5 mv TA *Bengtsson, H. 15-cm refl. Nova(gmh) 1993 04 09.60 11.42 U *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 09.60 11.85 B *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 09.60 11.49 V *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 09.60 12.60 R J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 09.60 12.68 I J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 09.83 12.1 mv T1 *Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 09.84 12.0 mv T1 *Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 09.89 11.9 mv T1 *Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 09.962 11.4 mv TA+*Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 10.14 11.2 mv TB *Levy Mail(rw) 1993 04 10.15 11.6 mv AC *Flynn, E. W. 25-cm refl. Mail(grl) * St. Louis, MO, USA 1993 04 10.21 11.69 U *Richmond Berkeley, bad weather News 1993 04 10.21 11.86 B *Richmond Berkeley, bad weather News 1993 04 10.21 11.37 V *Richmond Berkeley, bad weather News 1993 04 10.21 11.04 R C *Richmond Berkeley, bad weather News 1993 04 10.21 10.90 I C *Richmond Berkeley, bad weather News 1993 04 10.23 11.79 U *Richmond Berkeley, bad weather News 1993 04 10.23 11.85 B *Richmond Berkeley, bad weather News 1993 04 10.23 11.35 V *Richmond Berkeley, bad weather News 1993 04 10.23 10.95 R C *Richmond Berkeley, bad weather News 1993 04 10.23 10.88 I C *Richmond Berkeley, bad weather News 1993 04 10.40 11.82 U *Richmond Berkeley, bad weather News 1993 04 10.40 11.83 B *Richmond Berkeley, bad weather News 1993 04 10.40 11.33 V *Richmond Berkeley, bad weather News 1993 04 10.40 10.97 R C *Richmond Berkeley, bad weather News 1993 04 10.40 10.87 I C *Richmond Berkeley, bad weather News 1993 04 10.57 11.39 U *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 10.57 11.70 B *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 10.57 11.45 V *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 10.57 12.50 R J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 10.57 12.56 I J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 10.837 11.1 mv TA+*Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 10.85 12.1 mv T1 *Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 10.87 12.1 C T1 *Rodriguez, D. 20-cm f/4 refl. + CCD Mail(grl) 1993 04 10.89 12.0 mv T1 *Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 10.89 12.0 mv T1 *Pujol, F. 31-cm f/3.9 refl. Mail(grl) 1993 04 10.920 11.4 mv TA+*Granslo, B. H. 20.3-cm refl. 135x Mail(grl) 1993 04 10.922 11.3 mv TA *Andersen, O. I. 20.3-cm refl. 135x Mail(grl) 1993 04 11.10 11.24 C HC *Ferguson, D. C., 10-cm refr.+LYNXX CCD Mail(grl) *Morton, T. L., Baldwin Wallace Coll. *and Snyder, D. B. Berea, Ohio 1993 04 11.17 11.56 U *Richmond Berkeley News 1993 04 11.17 11.72 B *Richmond Berkeley News 1993 04 11.17 11.27 V *Richmond Berkeley News 1993 04 11.17 10.94 R C *Richmond Berkeley News 1993 04 11.17 10.79 I C *Richmond Berkeley News 1993 04 11.21 11.24 V *Richmond Berkeley News 1993 04 11.21 10.82 R C *Richmond Berkeley News 1993 04 11.21 10.78 I C *Richmond Berkeley News 1993 04 11.22 11.57 U *Richmond Berkeley News 1993 04 11.22 11.71 B *Richmond Berkeley News 1993 04 11.22 11.26 V *Richmond Berkeley News 1993 04 11.22 10.93 R C *Richmond Berkeley News 1993 04 11.22 10.78 I C *Richmond Berkeley News 1993 04 11.58 11.24 U *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 11.58 11.61 B *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 11.58 11.22 V *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 11.58 12.36 R J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 11.58 12.54 I J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 11.883 11.1 mv TA+*Granslo, B. H. 15.2-cm refl. 74x Mail(grl) 1993 04 11.885 11.4 mv TA *Andersen, O. I. 15.2-cm refl. 74x Mail(grl) 1993 04 11.89 11.6 mv T1 *Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 11.89 11.6 mv T1 *Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 11.980 11.3 mv TA *Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 12.00 10.9 mv TA *Smedstuen, O. 25.4-cm refl. 108x Mail(grl) * Haagaar Obs, Norway 1993 04 12.00 11.2 mv TA *Skartlien, R. 25.4-cm refl. 108x Mail(grl) 1993 04 12.21 11.46 U *Richmond Berkeley News 1993 04 12.21 11.61 B *Richmond Berkeley News 1993 04 12.21 11.14 V *Richmond Berkeley News 1993 04 12.21 10.83 R C *Richmond Berkeley News 1993 04 12.21 10.70 I C *Richmond Berkeley News 1993 04 12.63 11.19 U *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 12.63 11.50 B *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 12.63 11.13 V *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 12.63 12.28 R J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 12.63 12.34 I J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 12.85 10.5 mv T1 *Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 12.859 11.0 mv TA+*Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 13.2 11.36 U *Richmond, M. 51-cm News * Raw measurements 1993 04 13.2 11.53 B *Richmond, M. 51-cm News 1993 04 13.2 11.05 V *Richmond, M. 51-cm News 1993 04 13.2 10.74 R *Richmond, M. 51-cm News 1993 04 13.2 10.63 I *Richmond, M. 51-cm News 1993 04 13.2 11.57 U *Richmond, M. 76-cm News * Raw measurements 1993 04 13.2 11.53 B *Richmond, M. 76-cm News 1993 04 13.2 11.04 V *Richmond, M. 76-cm News 1993 04 13.2 10.65 R *Richmond, M. 76-cm News 1993 04 13.2 10.61 I *Richmond, M. 76-cm News 1993 04 13.2 11.0: mv TB+*Shaeffer, R. 32-cm refl. News 1993 04 13.3 11.53 B *Richmond, M. 76-cm News 1993 04 13.3 11.05 V *Richmond, M. 76-cm News 1993 04 13.3 10.76 R *Richmond, M. 76-cm News 1993 04 13.3 10.62 I *Richmond, M. 76-cm News 1993 04 13.3 11.0: mv TB+*Shaeffer, R. 32-cm refl. News 1993 04 13.60 11.06 U *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 13.60 11.40 B *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 13.60 11.08 V *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 13.60 12.23 R J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 13.60 12.32 I J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 13.842 11.1 mv TA+*Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 13.87 10.5 mv T1 *Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 13.88 10.6 mv T1 *Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 13.892 10.8 mv TA+*Skjaeraasen, O. 20.3-cm SCT 77x Mail(grl) 1993 04 13.91 10.6 mv T1 *Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 14.05 11.1 mv TB *Wijers News 1993 04 14.05 11.2 mv TB *Richmond News 1993 04 14.10 11.0 mv TB *Kratz Mail(rw) 1993 04 14.10 10.96 C HC *Ferguson, D. C., 10-cm refr.+LYNXX CCD Mail(grl) *Morton, T. L., Baldwin Wallace Coll. *and Snyder, D. B. Berea, Ohio 1993 04 14.13 11.0 mv TB *Beauchamp Mail(rw) 1993 04 14.16 11.41 U *Schulman Mail(rw) 1993 04 14.16 11.44 B *Schulman Mail(rw) 1993 04 14.16 11.00 V *Schulman Mail(rw) 1993 04 14.16 10.66 R *Schulman Mail(rw) 1993 04 14.16 10.54 I *Schulman Mail(rw) 1993 04 14.167 10.7 mv TB+*Sheaffer, R. 31cm refl. News 1993 04 14.17 10.22 J *Romanishin IAUC 5773 1993 04 14.17 10.15 H *Romanishin IAUC 5773 1993 04 14.17 9.91 K *Romanishin IAUC 5773 1993 04 14.2 11.34 U *Richmond, M. 51-cm News * Raw measurements 1993 04 14.2 11.46 B *Richmond, M. 51-cm News 1993 04 14.2 10.98 V *Richmond, M. 51-cm News 1993 04 14.2 10.70 R *Richmond, M. 51-cm News 1993 04 14.2 10.57 I *Richmond, M. 51-cm News 1993 04 14.2 11.43 B *Richmond, M. 76-cm News * Raw measurements 1993 04 14.2 10.98 V *Richmond, M. 76-cm News 1993 04 14.2 10.56 R *Richmond, M. 76-cm News 1993 04 14.2 10.54 I *Richmond, M. 76-cm News 1993 04 14.3 11.52 U *Richmond, M. 76-cm News * Raw measurements 1993 04 14.3 11.46 B *Richmond, M. 76-cm News 1993 04 14.3 11.00 V *Richmond, M. 76-cm News 1993 04 14.3 10.60 R *Richmond, M. 76-cm News 1993 04 14.3 10.55 I *Richmond, M. 76-cm News 1993 04 14.62 11.01 U *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 14.62 11.33 B *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 14.62 10.99 V *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 14.62 12.21 R J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 14.62 12.20 I J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 14.847 11.0 mv TA+*Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 14.87 10.6 mv T1 *Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 14.88 10.5 C T1 *Rodriguez, D. 20-cm f/4 refl.+ CCD Mail(grl) 1993 04 15.006 11.2 mv TA+*Granslo, B. H. 20.3-cm SCT 80x Mail(grl) 1993 04 15.15 10.9 mv TB *Beauchamp Mail(rw) 1993 04 15.15 10.18 J *Romanishin IAUC 5773 1993 04 15.15 10.15 H *Romanishin IAUC 5773 1993 04 15.15 9.87 K *Romanishin IAUC 5773 1993 04 15.15 11.34 U *Schulman Mail(rw) 1993 04 15.15 11.44 B *Schulman Mail(rw) 1993 04 15.15 10.91 V *Schulman Mail(rw) 1993 04 15.15 10.60 R *Schulman Mail(rw) 1993 04 15.15 10.50 I *Schulman Mail(rw) 1993 04 15.59 11.02 U *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 15.59 11.27 B *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 15.59 10.99 V *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 15.59 12.09 R J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 15.59 12.17 I J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 15.864 10.8 mv TA+*Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 15.87 10.1 mv T1 *Ripero, J. 33.5-cm f/5 refl. Mail(grl) 1993 04 15.88 10.1 mv T1 *Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 15.91 10.7 mv T1 *Pujol, F. 31-cm rf/5 efl. Mail(grl) 1993 04 15.924 11.1 mv TA+*Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 16.017 11.39 B *Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 16.017 10.85 V *Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 16.14 10.13 J *Romanishin IAUC 5773 1993 04 16.14 10.09 H *Romanishin IAUC 5773 1993 04 16.14 9.89 K *Romanishin IAUC 5773 1993 04 16.2 11.39 B *Richmond News 1993 04 16.2 10.85 V *Richmond News 1993 04 16.2 10.46 R C *Richmond News 1993 04 16.2 10.43 I C *Richmond News 1993 04 16.2 11.21 U *Richmond News 1993 04 16.2 11.39 B *Richmond News 1993 04 16.2 10.88 V *Richmond News 1993 04 16.2 10.58 R C *Richmond News 1993 04 16.2 10.45 I C *Richmond News 1993 04 16.20 11.34 U *Schulman Mail(rw) 1993 04 16.20 11.38 B *Schulman Mail(rw) 1993 04 16.20 10.88 V *Schulman Mail(rw) 1993 04 16.20 10.50 R *Schulman Mail(rw) 1993 04 16.20 10.44 I *Schulman Mail(rw) 1993 04 16.30 11.39 B *Richmond News 1993 04 16.30 10.90 V *Richmond News 1993 04 16.30 10.49 R C *Richmond News 1993 04 16.30 10.44 I C *Richmond News 1993 04 16.53 10.95 U *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 16.53 11.29 B *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 16.53 10.92 V *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 16.53 12.04 R J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 16.53 12.11 I J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 16.86 10.0 mv T1 *Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 16.87 10.6 mv T1 *Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 16.88 10.3 mv T1 *Carjaval, J. 31-cm f/4.5 refl. Mail(grl) 1993 04 16.89 10.3 C T1 *Rodriguez, D. 20-cm f/4 refl.+ CCD Mail(grl) 1993 04 16.91 10.4 mv T1 *Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 16.976 11.42 B *Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 16.976 10.88 V *Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 17.09 10.90 C HC *Ferguson, D. C., 10-cm refr.+LYNXX CCD Mail(grl) *Morton, T. L., Baldwin Wallace Coll. *and Snyder, D. B. Berea, Ohio 1993 04 17.13 10.10 J *Romanishin IAUC 5773 1993 04 17.13 10.07 H *Romanishin IAUC 5773 1993 04 17.13 9.83 K *Romanishin IAUC 5773 1993 04 17.16 10.9 mv T1 *Flynn, E. M. 25-cm refl. Mail(grl) 1993 04 17.19 11.33 U *Schulman Mail(rw) 1993 04 17.19 11.42 B *Schulman Mail(rw) 1993 04 17.19 10.84 V *Schulman Mail(rw) 1993 04 17.19 10.51 I *Schulman Mail(rw) 1993 04 17.2 10.83 V *Richmond News 1993 04 17.2 10.44 R C *Richmond News 1993 04 17.2 10.40 I C *Richmond News 1993 04 17.2 11.29 U *Richmond News 1993 04 17.2 11.38 B *Richmond News 1993 04 17.2 10.86 V *Richmond News 1993 04 17.2 10.52 R C *Richmond News 1993 04 17.2 10.45 I C *Richmond News 1993 04 17.236 10.77 V HC *Anderson, J. M. 40.6-cm refl. + PEP Mail(grl) * Univ. Northern Iowa * Hillside Observatory 1993 04 17.236 11.30 B HC *Anderson, J. M. 40.6-cm refl. + PEP Mail(grl) * Univ. Northern Iowa * Hillside Observatory 1993 04 17.236 11.37 U HC *Anderson, J. M. 40.6-cm refl. + PEP Mail(grl) * Univ. Northern Iowa * Hillside Observatory 1993 04 17.55 11.00 U *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 17.55 11.27 B *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 17.55 10.84 V *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 17.55 11.98 R J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 17.55 12.12 I J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 17.87 10.1 mv T1 *Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 17.87 10.3 mv T1 *Carvajal, J. 31-cm f/4.5 refl. Mail(grl) 1993 04 17.88 10.1 mv T1 *Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 17.88 10.3 mv T1 *Garcia, D. 25-cm f/3.9 refl. Mail(grl) 1993 04 17.91 10.3 mv T1 *Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 17.929 10.8 mv TA+*Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 17.999 11.0 mv TA+*Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 18.14 10.05 J *Romanishin IAUC 5773 1993 04 18.14 10.05 H *Romanishin IAUC 5773 1993 04 18.14 9.82 K *Romanishin IAUC 5773 1993 04 18.2 11.33 U *Richmond News 1993 04 18.2 11.42 B *Richmond News 1993 04 18.2 10.85 V *Richmond News 1993 04 18.2 10.51 R C *Richmond News 1993 04 18.2 10.40 I C *Richmond News 1993 04 18.3 11.44 B *Richmond News 1993 04 18.3 10.86 V *Richmond News 1993 04 18.3 10.55 R C *Richmond News 1993 04 18.3 10.40 I C *Richmond News 1993 04 18.56 11.09 U *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 18.56 11.32 B *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 18.56 10.86 V *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 18.56 12.03 R J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 18.56 12.10 I J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 18.85 10.2 mv T1 *Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 18.86 10.1 mv T1 *Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 18.872 10.6 mv TA+*Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 18.88 10.3 mv T1 *Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 18.88 10.3 mv T1 *Carvajal, J. 31-cm f/4.5 refl. Mail(grl) 1993 04 19.047 11.46 B *Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 19.047 10.84 V *Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 19.14 10.04 J *Romanishin IAUC 5773 1993 04 19.14 10.04 H *Romanishin IAUC 5773 1993 04 19.14 9.82 K *Romanishin IAUC 5773 1993 04 19.15 11.4 mv MR *Grosshans, K. 20-cm refl. News 1993 04 19.2 11.39 U *Richmond News 1993 04 19.2 11.45 B *Richmond News 1993 04 19.2 10.83 V *Richmond News 1993 04 19.2 10.52 R C *Richmond News 1993 04 19.2 10.42 I C *Richmond News 1993 04 19.57 11.29 U *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 19.57 11.42 B *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 19.57 10.89 V *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 19.57 12.04 R J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 19.57 12.09 I J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 19.85 10.2 mv T1 *Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 19.85 10.2 mv T1 *Carvajal, J 31-cm f/4.5 refl. Mail(grl) 1993 04 19.85 10.2 mv T1 *Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 19.858 10.8 mv TA+*Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 19.88 10.2 mv T1 *Rodriguez, D. 20-cm f/4 refl.+ CCD Mail(grl) 1993 04 19.89 10.8 mv TA *Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 19.892 10.8 mv TA+*Skjaeraasen, O. 20.3-cm SCT 117x Mail(grl) 1993 04 19.90 11.0 mv TA *Bengtsson, H. 15-cm refl. Mail(grl) 1993 04 19.92 10.8 mv TA *Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 19.924 11.0 mv TA+*Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 19.943 11.1 mv TA *Westlund, M. 20.3-cm SCT Mail(grl) 1993 04 19.986 11.46 B *Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 19.986 10.82 V *Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 20.000 10.8 mv TA *Westlund, M. 20.3-cm SCT Mail(grl) 1993 04 20.042 11.0 mv TB *Beauchamp Mail(rw) 1993 04 20.06 11.2 mv TB *Rhoads News 1993 04 20.14 10.9 mv TB *Beauchamp Mail(rw) 1993 04 20.2 11.53 U *Richmond News 1993 04 20.2 11.53 B *Richmond News 1993 04 20.2 10.88 V *Richmond News 1993 04 20.2 10.53 R C *Richmond News 1993 04 20.2 10.40 I C *Richmond News 1993 04 20.3 11.65 B *Richmond News 1993 04 20.3 10.88 V *Richmond News 1993 04 20.3 10.51 R C *Richmond News 1993 04 20.3 10.41 I C *Richmond News 1993 04 20.55 11.40 U *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 20.55 11.53 B *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 20.55 10.97 V *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 20.55 12.06 R J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 20.55 12.13 I J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 20.85 10.8 mv T1 *Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 20.88 11.0 mv T1 *Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 20.89 10.88 V *Hanzl, D. N. Copernicus Obs. IAUC 5775 1993 04 20.89 11.62 B *Hanzl, D. N. Copernicus Obs. IAUC 5775 1993 04 20.91 11.54 B *Kulesza, B. Olsztyn Obs., Poland IAUC 5774 1993 04 20.91 10.79 V *Kulesza, B. Olsztyn Obs., Poland IAUC 5774 1993 04 20.91 11.66 U *Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 20.91 11.62 B *Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 20.91 10.89 V *Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 20.91 10.27 R J *Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 20.91 10.32 I J *Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 21.55 11.57 U *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 21.55 11.67 B *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 21.55 11.07 V *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 21.55 12.11 R J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 21.55 12.20 I J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 21.85 10.9 mv T1 *Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 21.854 10.6 mv TA *Poyner, G. Mail 1993 04 21.86 10.4 mv T1 *Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 21.924 10.8 mv TB+*Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 21.96 10.9 mv T1 *Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 21.967 11.1 mv TA+*Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 21.967 11.2 mv TB *Schmeer, P. 20.3-cm SCT Mail 1993 04 22.00 11.87 B C *Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 22.00 11.01 V C *Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 22.00 10.61 R C *Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 22.00 10.49 I C *Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 22.003 10.8 mv TB *Poyner, G. Mail 1993 04 22.02 11.92 U *Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.02 11.75 B *Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.02 10.95 V *Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.02 10.20 R J *Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.02 10.33 I J *Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.064 11.1 mv TA+*Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 22.106 10.9 mv TB *Bryan, J. 25-cm 80x Mail 1993 04 22.17 11.0 mv T1 *Dillon, W. G. 28-cm SCT News 1993 04 22.2 10.99 V *Richmond News 1993 04 22.2 10.62 R C *Richmond News 1993 04 22.2 10.40 I C *Richmond News 1993 04 22.2 11.75 B *Richmond News 1993 04 22.2 11.00 V *Richmond News 1993 04 22.2 10.61 R C *Richmond News 1993 04 22.2 10.47 I C *Richmond News 1993 04 22.494 11.1 mv TB *Yamada, M. 16-cm Mail(kat) 1993 04 22.502 11.5 mv TB *Iida, M. Mail(kat) 1993 04 22.560 11.2 mv TB *Takahashi, S. 60-cm Mail(kat) 1993 04 22.88 12.47:U *Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.88 11.98 B *Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.88 11.09 V *Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.88 10.66 R J *Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.88 10.53 I J *Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.945 11.3 mv TB *Schmeer, P. 20.3-cm SCT 133x Mail 1993 04 23.00 11.96 B C *Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 23.00 11.09 V C *Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 23.00 10.67 R C *Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 23.00 10.54 I C *Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 23.2 12.13 U *Richmond News 1993 04 23.2 11.92 B *Richmond News 1993 04 23.2 11.10 V *Richmond News 1993 04 23.2 10.65 R C *Richmond News 1993 04 23.2 10.47 I C *Richmond News 1993 04 23.2 12.26 U *Richmond News 1993 04 23.2 11.90 B *Richmond News 1993 04 23.2 11.08 V *Richmond News 1993 04 23.2 10.68 R C *Richmond News 1993 04 23.2 10.46 I C *Richmond News 1993 04 23.3 12.27 U *Richmond News 1993 04 23.3 11.93 B *Richmond News 1993 04 23.3 11.11 V *Richmond News 1993 04 23.3 10.64 R C *Richmond News 1993 04 23.3 10.48 I C *Richmond News 1993 04 23.55 11.81 U *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 23.55 11.93 B *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 23.55 11.12 V *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 23.55 12.16 R J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 23.55 12.25 I J *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5774 1993 04 23.886 11.4 mv TB *Schmeer, P. 20.3-cm SCT 133x Mail 1993 04 23.92 11.09 V *Hanzl, D. N. Copernicus Obs. IAUC 5775 1993 04 23.92 12.09 B *Hanzl, D. N. Copernicus Obs. IAUC 5775 1993 04 23.958 11.5 mv TA *Poyner, G. Mail 1993 04 24.00 12.09 B C *Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 24.00 11.16 V C *Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 24.00 10.73 R C *Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 24.00 10.59 I C *Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 24.019 11.5 mv TA *Poyner, G. Mail 1993 04 24.052 11.1 mv TB *Wijers Mail(rw) 1993 04 24.521 11.6 mv TB *Kiyota, S. 20-cm refl Mail(kat) 1993 04 24.542 11.2 mv TB *Funada, M. 13-cm refl. 88x Mail(kat) 1993 04 24.552 11.2 C TB *Kushida 40-cm refl. ST-4 Mail(kat) 1993 04 24.88 11.4 mv TA *Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 24.920 11.5 mv TA *Westlund, M. 20.3-cm SCT Mail(grl) 1993 04 24.974 11.5 mv TB *Schmeer, P. 20.3-cm SCT 133x Mail 1993 04 25.02 11.4 mv TA *Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 25.02 11.22 V *Hanzl, D. N. Copernicus Obs. IAUC 5775 1993 04 25.02 12.27 B *Hanzl, D. N. Copernicus Obs. IAUC 5775 1993 04 25.507 11.2 C TB *Kushida 40-cm refl. ST-4 Mail(kat) 1993 04 25.548 11.21 C TB *Fujita, Y. 60-cm CCD no filter Mail(kat) * Kuma-Kogen Obs. 1993 04 25.562 11.4 mv TB *Ohkura, N. 35.5-cm SCT Mail(kat) 1993 04 25.563 11.6 mv TB *Kiyota, S. 20-cm refl. Mail(kat) 1993 04 25.751 11.6 mv TB *Yamada, M. 16-cm refl. Mail(kat) 1993 04 25.951 11.6 mv TA *Poyner, G. Mail 1993 04 25.978 11.5 mv TA+*Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 26.15 11.35 V *Skiff, B. Lowell Obs. IAUC 5775 1993 04 26.15 12.23 b *Skiff, B. Lowell Obs. IAUC 5775 1993 04 26.450 11.7 mv TB *Yamada, M. 16-cm refl. Mail(kat) 1993 04 26.462 11.8 mv TB *Iida, M. Mail(kat) 1993 04 26.562 11.3 C TB *Kushida 40-cm refl. ST-4 Mail(kat) Regards, Taichi Kato (Kyoto University) ******* From: SMTP%"tkato@kusastro.kyoto-u.ac.jp" 28-APR-1993 00:53:35.02 To: ALEX Subj: SN1993J photometry update photometry update: new entries (Apr.27) New entries and revisions are marked with "*". ------------------------------------------------------------------------------- YYYY MM DD.DDD MAGN MS SEQ OBSERVER NOTES SOURCE ------------------------------------------------------------------------------- 1993 04 10.86 11.72 U *Shakhovskoy et al. Crimea 1.25-m News 1993 04 10.86 11.84 B *Shakhovskoy et al. Crimea 1.25-m News 1993 04 10.86 11.30 V *Shakhovskoy et al. Crimea 1.25-m News 1993 04 10.86 10.85 R J *Shakhovskoy et al. Crimea 1.25-m News 1993 04 10.86 10.66 I J *Shakhovskoy et al. Crimea 1.25-m News 1993 04 13.81 11.48 U *Shakhovskoy et al. Crimea 1.25-m News 1993 04 13.81 11.58 B *Shakhovskoy et al. Crimea 1.25-m News 1993 04 13.81 11.02 V *Shakhovskoy et al. Crimea 1.25-m News 1993 04 13.81 10.60 R J *Shakhovskoy et al. Crimea 1.25-m News 1993 04 13.81 10.45 I J *Shakhovskoy et al. Crimea 1.25-m News 1993 04 16.86 11.54 U *Shakhovskoy et al. Crimea 1.25-m News 1993 04 16.86 11.61 B *Shakhovskoy et al. Crimea 1.25-m News 1993 04 16.86 10.95 V *Shakhovskoy et al. Crimea 1.25-m News 1993 04 16.86 10.48 R J *Shakhovskoy et al. Crimea 1.25-m News 1993 04 16.86 10.37 I J *Shakhovskoy et al. Crimea 1.25-m News 1993 04 19.87 11.70 U *Shakhovskoy et al. Crimea 1.25-m News 1993 04 19.87 11.69 B *Shakhovskoy et al. Crimea 1.25-m News 1993 04 19.87 11.20 V *Shakhovskoy et al. Crimea 1.25-m News 1993 04 19.87 10.38 R J *Shakhovskoy et al. Crimea 1.25-m News 1993 04 19.87 10.27 I J *Shakhovskoy et al. Crimea 1.25-m News 1993 04 22.78 12.01 U *Shakhovskoy et al. Crimea 1.25-m News 1993 04 22.78 11.88 B *Shakhovskoy et al. Crimea 1.25-m News 1993 04 22.78 10.98 V *Shakhovskoy et al. Crimea 1.25-m News 1993 04 22.78 10.44 R J *Shakhovskoy et al. Crimea 1.25-m News 1993 04 22.78 10.24 I J *Shakhovskoy et al. Crimea 1.25-m News 1993 04 23.097 11.3 mv TB *Bryan, J. 25-cm 80x Mail 1993 04 23.85 12.53 U *Shakhovskoy et al. Crimea 1.25-m News 1993 04 23.85 12.26 B *Shakhovskoy et al. Crimea 1.25-m News 1993 04 23.85 11.23 V *Shakhovskoy et al. Crimea 1.25-m News 1993 04 23.85 10.53 R J *Shakhovskoy et al. Crimea 1.25-m News 1993 04 23.85 10.43 I J *Shakhovskoy et al. Crimea 1.25-m News 1993 04 24.446 11.1 mv TB *Sekino, Y. Mail(kat) 1993 04 24.75 12.75 U *Shakhovskoy et al. Crimea 1.25-m News 1993 04 24.75 12.42 B *Shakhovskoy et al. Crimea 1.25-m News 1993 04 24.75 11.31 V *Shakhovskoy et al. Crimea 1.25-m News 1993 04 24.75 10.60 R J *Shakhovskoy et al. Crimea 1.25-m News 1993 04 24.75 10.46 I J *Shakhovskoy et al. Crimea 1.25-m News 1993 04 26.476 11.6 mv TB *Makiguchi, N. 25-cm refl. Mail(kat) 1993 04 25.493 11.2 mv TB *Sekino, Y. Mail(kat) 1993 04 25.75 12.99 U *Shakhovskoy et al. Crimea 1.25-m News 1993 04 25.75 12.57 B *Shakhovskoy et al. Crimea 1.25-m News 1993 04 25.75 11.41 V *Shakhovskoy et al. Crimea 1.25-m News 1993 04 25.75 10.70 R J *Shakhovskoy et al. Crimea 1.25-m News *(corrected for possible mistype) 1993 04 25.75 10.50 I J *Shakhovskoy et al. Crimea 1.25-m News 1993 04 26.098 11.7 mv TB *Bryan, J. 25-cm 80x Mail 1993 04 26.454 11.30 C TB *Fujita, Y. 60-cm CCD no filter Mail(kat) * Kuma-Kogen Obs. 1993 04 26.469 11.5 mv TB *Sekino, Y. Mail(kat) 1993 04 26.76 13.22 U *Shakhovskoy et al. Crimea 1.25-m News 1993 04 26.76 12.73 B *Shakhovskoy et al. Crimea 1.25-m News 1993 04 26.76 11.51 V *Shakhovskoy et al. Crimea 1.25-m News 1993 04 26.76 10.74 R J *Shakhovskoy et al. Crimea 1.25-m News 1993 04 26.76 10.55 I J *Shakhovskoy et al. Crimea 1.25-m News 1993 04 26.875 11.5 mv TA *Poyner, G. 40-cm Mail 1993 04 27.108 11.7 mv TB *Bryan, J. 25-cm 80x Mail 1993 04 27.17 11.5 mv TB *Dillon, B. 28-cm SCT News 1993 04 27.434 12.0 mv TB *Makiguchi, N. 25-cm refl. Mail(kat) 1993 04 27.462 11.7 mv TB *Takahashi, S. 60-cm refl. Mail(kat) 1993 04 27.503 11.6 mv TB *Sekino, Y. Mail(kat) *** ******************************************************************************* 31) From porter@vela.tuc.noao.edu Fri Apr 30 08:01:04 1993 Subject: to SN network Dear supernova colleagues: here are some news and an observing advisory about SN 1993J I have just submitted to the IAU Circulars. I am using a newly revised and much extended distribution list. Once again, please advise me of desired additions, deletions, changes, etc. Alain Porter APORTER@NOAO.EDU A. C. Porter, KPNO/NOAO, reports: Nightly low resolution (about 0.8 nm) spectroscopic monitoring of SN 1993J in the range 400-750 nm with the Goldcam spectrograph on the KPNO 2.1m telescope has been carried out by J. Stocke (Univ. of Colorado), E. Perlman, and E. Ellingson (CASA) (UT April 15-19); T. Lauer (KPNO/NOAO) and M. Postman (STScI) (UT April 20-22); and F. Owen (NRAO) and M. Ledlow (UNM/NRAO) (UT April 24-30). An absorption feature in the peak of the broad H alpha emission line, which first became visible on about UT April 19, has grown into a prominent notch about 10 nm wide on UT April 30. Continued and higher resolution spectroscopic and polarimetric observations of this feature are urged. Observers are also advised that instrumentation schedules may prevent regular JHK photometry or near infrared spectroscopy (800-1000 nm, including the calcium triplet) from being done at KPNO during May. Other observatories should make a special effort to fill in these gaps. ************************************************************************** 32) From ALEX@BKYAST.BERKELEY.EDU Tue May 4 20:13:33 1993 Subject: SN 1993J update 5-4-93 Dear SN 1993J worshipers: The rate at which the supernova is fading at optical wavelengths seems to be slowing down, especially in R and I. Indeed, it might be settling onto a "real" plateau. On the other hand, it is still possible that the object had a relatively thin hydrogen envelope, and that its brightness will begin to decline rapidly in the near future; if so, it may turn into a "Type Ib/Ic" supernova spectro- scopically, as did SN 1987K --- see Filippenko, 1988, AJ). Please continue observing with diligence! Optical AND IR photometry are important if we are to construct a bolometric light curve. It is especially important to continue low-dispersion optical spectroscopy throughout the current bright run. Not many telescopes are equipped with low-dispersion spectrographs at this time, so those that are can really make a difference. There are interesting features developing --- such as a double-peaked H-alpha profile! Ralph A.M.J. Wijers, Princeton University Observatory, has a list of SN 1993J magnitudes that can be usd by plotting packages that like columns. Please contact him directly if you would like to receive it. His e-mail address is rw@astro.Princeton.EDU . Alternatively, the list is also available via anonymous ftp to astro.princeton.edu . Login as ftp, password anonymous, and go to subdirectory rw/sn. You will find two files: 1993j.mag : the magnitude list 1993j.conflict : a list of differences between this list and others, which should be resolved, as well as some general remarks about problems with the list. Ralpha notes that "The most important thing for the near future will be to get the details of the various sets of comparison stars, and to try and get all visual observations reduced to the same set of reference stars. It would be helpful if visual observers send me the reference stars they used for each of their estimates, and the magnitudes that these stars have according to their chart." Below are some notes from others. Cheers, Alex Filippenko ****** From Wim van Driel (lvandri@c1.mtk.nao.ac.jp): Concerns: pre-discovery image/ request for R-band magnitudes of faint stars We are working on the pre-discovery R-band image we made with the Kiso Schmidt on March 25.6, from which we estimated an upper limit of about 18 for the supernova. However, after spatially filtering the image to remove the diffuse emission of the galaxy we have the impression that the upper limit is considerably lower than 18 in R. The problem in determining an accurate upper limit is that we do not have reliable magnitudes for faint stars in M81. So if someone could provide us with R magnitudes (plus positions) of stars of about 16th to 20th magnitude in M81, preferably within about 6 arcmin radius of the supernova, we would be very grateful. Wim van Driel, Kiso Observatory: lvandri@c1.mtk.nao.ac.jp ***** From Guy M. Hurst (GMH@ASTROPHYSICS.STARLINK.RUTHERFORD.AC.UK) Subj: TA sequence for SN 1993J Update THE ASTRONOMER Electronic Circular No 738 1993 May 03 10.02UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP,England. Telephone/FAX(0256)471074 Int:+44256471074 TELEX: 9312111261 Answerback: TA G TELECOM GOLD: 10074:MIK2885 GMH at UK.AC.RUTHERFORD.STARLINK.ASTROPHYSICS STARLINK: RLSAC::GMH GMH at UK.AC.CAM.ASTRONOMY.STARLINK STARLINK: CAVAD::GMH ------------------------------------------------------------------- SUPERNOVA 1993J IN NGC 3031- SEQUENCE D. Hanzl, N. Copernicus Planetarium, Brno, communicates that GSC 4383.0384 appears to be variable, first noted visually on Apr. 16 by K. Hornoch at Lelekovice and J. Kysely at Vlasim, and confirmed photoelectrically by Hanzl as having a maximum at V = 10.98 +/- 0.05, amplitude about 0.35 mag, and period of probably < 1 day. IAUC 5775 Editor: Star D The above suspected variable is star D on the sequence of 'The Astronomer' (assigned magnitude 10.70) and is therefore dropped. If anyone who has submitted estimates involving 'D' also made additional estimates involving other comparisons please e-mail these as soon as possible. This would not only enable us to re-reduce the estimate but also may enable the value of 'D' to be determined for that date and time. Star 1 In addition to assist with reduction of early estimates we have added GSC 4383.150 to our sequence as star 1 with a magnitude value of 10.3. This was used extensively by many groups when the supernova was near maximum. There are two stars of '103' on the Thompson-Bryan chart. The eastern star is 'C' on the TA sequence and the newly-introduced star '1' is on the western edge. On the 'B' format electronic chart issued with E-Circular 722, the coordinates are X=38, Y=57. Latest sequence with other identifications. Please only use the assigned TA values in your reductions. GSC Corwin Sandage ****TA**** GSC TB Skiff V B-V Mag B-V *Star Mag* Mag Mag B-V 4383 * * . 94 9 13.92 0.80 *R 13.92* 13.64 13.9 . 150 *1 10.3 * 9.88 10.3W . 224 11.85 +1.30 *- * 11.18 . 308 11.78 +0.69 *E 11.78* 11.86 11.8 . 322 A5 15.28 1.01 *Q 15.28* 14.87 15.3 . 340 * * 14.59 14.0 14.95 0.16 . 384 VARIABLE *D - * 10.86 10.7 . 434 12.45 +0.63 *G 12.45* 12.00 12.4 12.43 0.44 . 565 * * 12.33 11.42 0.36 . 574 *L 14.10* 14.51 14.1 . 598 A6 14.99 0.69 *N 14.99* 14.59 15.0 . 633 13 13.78 0.58 *K 13.78* 13.31 13.8 . 738 *B 9.40* 8.68 9.4 . 848 *A 8.90* 7.98 8.9 . 860 19 10.32 0.39 *C 10.32* 9.86 10.3 . 863 * * 12.34 12.88 0.56 . 928 11.90 +0.50 *F 11.90* 11.42 11.9 11.93 0.31 . 935 14 12.89 0.73 *H 12.89* 12.38 12.9 .1023 14.73 +0.46 11 14.77 0.44 *M 14.73* 14.37 14.7 .1031 11.62 +0.53 * * 11.17 .1123 13.65 +0.57 *P 13.65* 13.24 13.6 13.64 0.44 Guy M Hurst ******** ************************************************************************* 33) From ALEX@BKYAST.BERKELEY.EDU Tue May 18 21:53:06 1993 Subject: SN 1993J update 5-18-93 Dear SN 1993J freaks: I'm sorry it has been a while since my last update, but things have been pretty well covered in the IAU Circulars. One of the more exciting events of the past few weeks has been the beginning of the transformation of SN 1993J into a Type Ib supernova --- thus, SN 1993J is actually a "Type IIb." This sort of behavior was predicted by theorists, and at least a few papers have already been submitted to Nature. Thursday morning I am leaving for the IAU Colloquium 145 (SNe and SNRs) in Xian, China; I won't be back until June 5, right before the AAS meeting. Thus, I won't be sending any updates for a while, and it will be virtually impossible to contact me. It is very important to keep observing the SN, especially since many of the normal observers will be away from telescopes the next two weeks. As before, extra efforts should be made during the upcoming dark run, when many telescopes will not be suitably equipped for low-dispersion optical spectroscopy. I will be organizing a special session on SN 1993J at the Xian meeting. Tentative speakers include Schuyler Van Dyk (radio), Ed Baron (early-time spectral synthesis), Ken Nomoto (theoretical X-ray and optical light curves), Alak Ray (theory), Stan Woosley and Ron Eastman (theory), Roger Chevalier (interaction with circumstellar wind), and Tom Matheson and Alex Filippenko (optical spectroscopy and photometry). If you would like to present some results, send me an e-mail message by Wednesday afternoon or talk to me when you arrive in China. I am also organizing an informal discussion of SN 1993J at the upcoming Berkeley AAS meeting. It will be held in room 145 Dwinelle, Tuesday, June 8, 1993, 4-6 pm. There is no formal agenda at this point. Perhaps I will make one when I return from China, after hearing from others who might want to participate. I expect that each of the presentations will be limited to about 5 minutes (just like the regular AAS talks). The difference is that there will be plenty of time for discussion. Indeed, I hope we will spend MOST of the time discussing the supernova. People should feel free to stand up and show a viewgraph, etc. This applies regardless of whether you are listed below. Thus far, the following people are scheduled to speak (but not necessarily in this order): Susan Trammell et al. --- spectropolarimetry of SN 1993J Nic Walton et al. --- optical spectroscopy and photometry of SN 1993J Juliana Hsu et al. --- theoretical light curves of SN 1993J Stan Woolsey et al. --- theory of SN 1993J (I may have accidentally left someone out; if so, please notify me.) In addition, to bring everyone up to date, there will be short summaries of the results to be presented at the normal SN 1993J session to be held Wednesday morning. These will be given by Tom Matheson et al. --- SN 1993J optical spectroscopy Young Paik et al. --- SN 1993J optical photometry George Sonneborn et al. --- SN 1993 UV spectroscopy If you want to present a short report at this special informal session, please contact me by e-mail (but don't expect a reply until June 6!); I imagine everyone can be accommodated. Below are some notes from other astronomers. Cheers, Alex Filippenko *********** From G. de Vaucouleurs (gav@astro.as.utexas.edu) (5.15.93) Note 3 on SN1993J compilations: 1. On 93/05/04.3 (JD111.8) correct first Richmond observations to read U = 14.30 (NOT 13.30). 2. Johnson or Cousins system? The Appleton+Eitter R and I observations are recorded in the Kato, Granslo, and other compilations as being on the J system, but the run of their V-R, V-I colors fit much better with the C system. Could the observers and/or compilers please verify their filters or records? Also are the the published data raw (instrumental) colors, or are they properly reduced to the adopted standard system (that is, including color terms)? 3. With the increase in the color index of the star large systematic differences have appeared between different sources, particularly in U-B, B-V. This is evidently due to the neglect of the color terms in some or all of the published provisional values. Could the observers please notify the compilers (and all of us) whether their UBVRI magnitudes are in the raw (instrumental) color systems of their instruments or have already (at least in some cases) been reduced to some standard system (which?). 4. Bad News. Brian Skiff, Lowell Observatory, reports that the 14th mag. star nearest to the SN (*C of Richmond = GSC 0340) is definitely variable with an uncomfortably large amplitude as follows: ..................... [quoted by permssion] ........................ JD102.65 V=14.95, 103.65: 14.65, 114.66:14.41, 115.66: 14.84, 116.68: 14.67, 117.68: 14.67, 118.68: 14.58. = 14.68 +/- 0.06 (s.d.: 0.17). ..................................................................... This is unfortunate because Neely's important prediscovery observation was referred to it, namely SN(0.8)C on JD074.8. It is most important, therefore, to monitor *C regularly (at least UBV and spectroscopically) to establish whether it is a regular, predictable variable (cepheid? eclipsing binary?) or an irregular variable. In the first case the early observation may be salvaged, in the second only a rough estimate is all that may be possible (unless other stars could be used as standards on the original CCD frame). Measurements of *C on pre-discovery, archival pictures of M 81 will be also valuable. A convenient comparison star (which could be used as a test of constancy) could be GSC 1037 (7 s W, 10' N of 0340 = 14.1 on the TB chart). B. Skiff found it constant to +/- 0.01 on 3 nights (May 9-11) at = 14.44, but ~0.3-0.4 mag fainter than indicated on the TB chart from two previous measurements at McDonald observatory (sources JN and BH, ApJS, 24, 421, 1972). New observations are needed. 5. Onset time. From a consideration of the light and color curves I derive for the time of onset to = JD074.0 +/- 0.1 (or less) = March 27.5. The initial flash peaked at JD077.0, V = 10.72; the following minimum was on JD082.8, V = 12.87; the main maximum was on JD095.6, V = 10.86. The initial rise rate of the flash was 1.0 mag/day, of the main maximum ~0.1 mag/day. The two components can be neatly separated, but more information on the early visual and unfiltered CCD observations is needed for a definitive solution. Bets are still open on whether it will turn out to be a plateau Type II or something else. ********* From Taichi Kato (tkato@kusastro.kyoto-u.ac.jp) 0001 0002 ** SN1993J photometry update 0003 0004 * Updated list of observations obtained by May. 16. 0005 0006 Magnitude systems (MS): 0007 U, B, V Johnson system 0008 R, I designated by J (Johnson) and C (Kron-Cousins) 0009 J, H, K infrared systems 0010 g, r Gunn g,r 0011 mv visual (close to V) 0012 p photographic (miscellaneous materials) 0013 C unfiltered CCD 0014 0015 Sequences: 0016 TB Thompson-Bryan Supernova Search Chart 0017 TA The Astronomer/BAA sequence (using mv magnitudes 0018 from AAVSO and V magnitudes from Sandage and Corwin) 0019 GS Guide Star Catalog 0020 T1 AAVSO version of Thompson-Bryan chart 0021 (supplied with AAVSO Alert Notice 169) 00211 A1 AAVSO Supernova Search Chart for NGC 3031 - Version 1 00212 (supplied with AAVSO Alert Notice 170) 00213 A2 AAVSO Supernova Search Chart for NGC 3031 - Version 2 00214 (supplied with AAVSO Alert Notice 171) 0022 AC AAVSO chart 0023 S SAO Star Catalog 0024 HC photoelectric sequence by H. Corwin 0025 MR M. Richmond's comparison star "A" (V near 11.40) 0026 NP The North Polar Sequence 0027 0028 A plus sign indicate that comparisons from several sources 0029 were used, the chief reference is given. 0030 0031 Numerous data are included from following sources. 0032 Bjorn H. Granslo (bgranslo@astro.uio.no) Mail(grl) 0033 Gerard de Vaucouleurs (gav@astro.as.utexas.edu) Mail(gav) 0034 Taichi Kato (tkato@kusastro.kyoto-u.ac.jp) Mail(kat) 0035 Ralph A.M.J. Wijers (rw@ourania.Princeton.EDU) News(rw) 0036 The Astronomer/BAA visual database 0037 (GMH@ASTROPHYSICS.STARLINK.RUTHERFORD.AC.UK Nova(gmh) 0038 Mike Boschat (andromed@Hail.ATM.Dal.Ca) News(bos) 0039 Hans Bengtsson (hanben@saaf.se) Mail(ben) 00391 Jost Jahn (j.jahn@abbs.hanse.de) Mail(jah) 0040 00401 @ Observations marked with @ are communicated through this 00402 @ nova network. 0041 New entries and revisions are marked with "*". 0042 0043 Many thanks to observers for sending their observations! 0044 I especially would like to thank Bjorn H. Granslo 0045 (bgranslo@astro.uio.no) for valuable information 0046 in preparing this report. 0047 0048 From this report, line numbers are given for the header and remarks 0049 for sorting convention. Lines starting with "0" are headers, "1" 0050 for the data, "2" for the remarks. 0051 Overflown data are marked with "&" at the column 16. 0052 0053 You can add new entries to this table and use UNIX sort to 0054 rearrange it. Data lines can be extracted using grep -v "&" etc. 0055 0500--------------------------------------------------------------------------- 0501 YYYY+ 0502 MM DD.DDD MAGN MS SEQ OBSERVER NOTES SOURCE 0503--------------------------------------------------------------------------- 0504 1982 03 21(-23) 20.8 V Humpreys, R. 4-m plate IAUC 5739 1982 03 21(-23) 19.9 R Humpreys, R. 4-m plate IAUC 5739 1982 03 21(-23) 21.4 B Humpreys, R. 4-m plate IAUC 5739 1982 03 21(-23) 21.7 U Humpreys, R. 4-m plate IAUC 5739 1985 01 21. 21 r Cohen, J. G. 1.5-m + CCD IAUC 5742 1985 01 21. 21.9 g Cohen, J. G. 1.5-m + CCD IAUC 5742 1985 03 21. 20.7 V @Humpreys, R. 4-m plate Nova 1985 03 21. 19.9 R @Humpreys, R. 4-m plate Nova 1985 03 21. 21.8 B @Humpreys, R. 4-m plate Nova 1990 02 ??(-03) 19.3 R Tomaney, A and McDonald 2.1-m IAUC 5771 1990 02 ??(-03)&1 Crotts, A. H-alpha image 1990 02 ??(-03) 21.2 B Tomaney, A and McDonald 2.1-m IAUC 5771 1990 02 ??(-03)&1 Crotts, A. 1" aperture 1990 03 ?? 20.0 V Perelmuter KPNO, CCD IAUC 5736 1990 03 ?? 19.3 R Perelmuter KPNO, CCD IAUC 5736 1992 01 24. 19.7: V Magnier, E. Hiltner 2.4-m, CCD IAUC 5741 1992 01 24. 18.9: R Magnier, E. Hiltner 2.4-m, CCD IAUC 5741 1992 10 02. 20.0 R @Humpreys, R. KPNO 0.9-m, CCD Nova 1992 05 01. 20.88 V Blakeslee, J. and 2.4-m + Loral CCD IAUC 5758 1992 05 01. &1 Tonry, J. 1992 05 01. 20.79 V Blakeskee, J. and 2.4-m + CCD IAUC 5758 1992 05 01. &1 Tonry, J. 1992 05 01. 19.44 I C Blakeskee, J. and 2.4-m + CCD IAUC 5758 1992 05 01. &1 Tonry, J. 1992 10 02. 20.0 R Salzer, J. et al. IAUC 5741 1993 01 23.635 [15.3 p TB Matsumoto, H. Fuji Color G-400 Mail(kat) 1993 02 24.687 [16.0 mv TB Kushida, R. Mail(kat) 1993 03 10.27 [15.5 mv Wren, W. McDonald Obs. IAUC 5757 1993 03 10.27 &1 Source corrected from IAUC 5737 1993 03 16.542 [15.0 mv TB Kushida, R. Mail(kat) 1993 03 16.90 19.9 R C Prugniel, P. #1 CCD serveral images IAUC 5742 1993 03 21.667 [16.0 p TB Okamoto, Y. Mail(kat) 1993 03 21.688 [14.0 p TB Matsushima ,T. 20cm SCT, Mail(kat) 1993 03 21.688 &1 Fuji Super G400 1993 03 23.10 19.9 R C Prugniel, P. #1 CCD between two dates IAUC 5742 1993 03 25.60 [18.0 R van Driel, W. Kiso CCD IAUC 5737 1993 03 25.60 &1 mag. revision, Mail(kat) 1993 03 26.90 [14.0 mv Garcia, F. Mail(gmh) 1993 03 26.90 [14.0 mv Ripero, J. 33.5-cm refl. IAUC 5731 1993 03 26.92 [14.5 mv Pujol. F. 31-cm refl. Mail(grl) 1993 03 26.930 [14 mv Korth, S. 36-cm refl. Mail(grl) 1993 03 26.995 [17 p Bielefeld 0.21m refl Kodak 2415 IAUC 5788 1993 03 26.995 &1 hypered 1993 03 27.91 [16.0 p Merlin, J.-C. Ektachrome 400 IAUC 5740 1993 03 28.30 13.7 C Neely, A. CCD IAUC 5740 1993 03 28.30 &1 star C V=14.5 (Richmond) 1993 03 28.30 &2 original mag = 13.8 1993 03 28.30 &3 * star C definitely var Mail(gav) 1993 03 28.30 &4 * =14.44 Mail(gav) 1993 03 28.89 11.6 C T1 Rodriguez, D. 20-cm f/5 refl.+ AAVSO 169 1993 03 28.89 &1 ST-4 CCD 1993 03 28.89 &2 Corrected, original Mail(grl) 1993 03 28.89 &3 mag. = 11.8 1993 03 28.90 11.9 mv Mizser, A. Budapest, Hungary IAUC 5788 1993 03 28.906 11.8 mv T1 Garcia, F. 25-cm f/3.9 refl. IAUC 5731 1993 03 28.906 &1 DISCOVERY OBSERVATION 1993 03 28.906 &2 Corrected, original Mail(grl) 1993 03 28.906 &3 mag. = 12.0 Mail(gav) 1993 03 28.983 11.5 mv Garcia, F. AAVSO 169 1993 03 28.983 &1 Corrected Mail(gav) 1993 03 29.019 11.2 C Ulfheden, P. and 15-cm refl.+ ST-6 CCD Mail(grl) 1993 03 29.019 &1 Hamberg, I. Stockholm, Sweden 1993 03 29.17 11.2 mv McGrath, T. (from A. Cowley, ASU) Mail(gav) 1993 03 29.18 11.7 C Neely, A. W. #2 CCD IAUC 5742 1993 03 29.691 10.3 p TB Hashimoto, Y. Fuji SG-400 Mail(kat) 1993 03 29.82 11.0 C T1 Rodriguez, D. 20-cm f/4 refl. + CCD IAUC 5731 1993 03 29.82 &1 Time corrected from Mail(grl) 1993 03 29.82 &2 1993 Mar. 29.88 UT 1993 03 29.823 10.9 mv T1 Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 03 29.823 &1 Corrected Mail(gav) 1993 03 29.823 11.0 mv T1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 03 29.823 &1 Corrected Mail(gav) 1993 03 29.88 11.3 mv Pujol, F. IAUC 5731 1993 03 29.958 11.2 mv T1 Garcia, F. 25-cm f/3.9 refl. IAUC 5733 1993 03 29.958 &1 Corrected Mail(gav) 1993 03 30.006 11.0: C TB Solberg, R. 40.6-cm f/4.5 refl.+ Mail(grl) 1993 03 30.006 &1 ST-6 CCD. Nova Obs., Norway 1993 03 30.1 11 mv Treffers, R. R. 0.8-m + CCD IAUC 5731 1993 03 30.19 10.70 V Richmond Berkeley News 1993 03 30.19 10.61 R C Richmond Berkeley News 1993 03 30.19 10.66 I C Richmond Berkeley News 1993 03 30.25 10.74 V Hartwick,F.et al. 50-cm refl.+ CCD IAUC 5731 1993 03 30.25 &1 revision Zurek et al. see IAUC 5761 1993 03 30.25 10.63 B Zurek et al. 50-cm refl. + CCD IAUC 5761 1993 03 30.25 10.65 R C Zurek et al. 50-cm refl. + CCD IAUC 5761 1993 03 30.25 10.64 I C Zurek et al. 50-cm refl. + CCD IAUC 5761 1993 03 30.538 10.4 mv TB Yamada, M. Mail(kat) 1993 03 30.82 10.0 mv Garcia, F. 25-cm refl. Mail(grl) 1993 03 30.845 10.3: mv TA Schmeer, P. 20.3-cm SCT IAUC 5733 1993 03 30.854 10.0 mv Riperro, J. 33.5-cm refl. Mail(grl) 1993 03 30.854 &1 Corrected Mail(gav) 1993 03 30.865 10.6 mv TA Poyner, G. 40-cm refl. Mail 1993 03 30.870 10.9 mv T2 Midtskogen, O. 31.6-cm refl. 130x # Mail(grl) 1993 03 30.887 10.5 mv TA Hurst, G. M. 44-cm refl., class 2 TA E731 1993 03 30.887 &1 Basingstoke, England 1993 03 30.89 10.5 mv TA Taylor, M. D. Wakefield, England TA E731 1993 03 30.899 10.6 mv TA+ Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 03 30.9 10.78 V @Unger, S. B-V=0.05 Nova 1993 03 30.9 10.83 B @Unger, S. B-V=0.05 Nova 1993 03 30.9 9.98 U @Unger, S. Nova 1993 03 30.9 10.60 I @Unger, S. Nova 1993 03 30.906 10.5 mv TB Schmeer, P. 20.3-cm SCT Mail 1993 03 30.91 10.0 C T1 Rodriguez, D. 20-cm f/4 refl. + CCD Mail(grl) 1993 03 30.916 10.6 mv TA Poyner, G. 40-cm refl. Mail 1993 03 30.917 10.0 mv T1 Pujol, F. 31-cm refl. Mail(grl) 1993 03 30.917 &1 Corrected Mail(gav) 1993 03 30.928 10.4 mv TB Taylor, M. Nova(gmh) 1993 03 30.93 10.5 mv TA Bengtsson, H. 15-cm refl. Mail(grl) 1993 03 30.93 &1 Hisings Backa, Sweden 1993 03 30.93 10.96 B @Steele, I. 40cm refl, CCD Nova 1993 03 30.93 10.75 V @Steele, I. 40cm refl, CCD Nova 1993 03 30.93 10.69 R C @Steele, I. 40cm refl, CCD Nova 1993 03 30.93 10.55 I C @Steele, I. 40cm refl, CCD Nova 1993 03 30.94 10.5 mv Shanklin, J. D. IAUC 5736 1993 03 30.95 10.3 mv Taylor, M. D. Estimate C=V TA E731 1993 03 30.989 10.6 mv TA Poyner, G. 40-cm refl. Mail 1993 03 31.00 10.94 B C Prugniel, P. #1 0.8-m + CCD, B-R=+0.3 IAUC 5736 1993 03 31.00 10.60 R C Prugniel, P. #1 0.8-m + CCD, B-R=+0.3 IAUC 5736 1993 03 31.05 10.8 V Smith, H. and IAUC 5758 1993 03 31.05 &1 Lansing, E. 1993 03 31.080 10.7 mv NP Panther, R. Nova(gmh) 1993 03 31.087 10.0 mv S Moore, D. 20-cm SCT, class 2 News 1993 03 31.09 10.0 mv S Ryan Dubmin News(rw) 1993 03 31.1 10 mv Kohl, R. Independent discovery IAUC 5736 1993 03 31.1 10.21 U @Unger, S. Nova 1993 03 31.1 10.85 V @Unger, S. B-V=0.10 Nova 1993 03 31.1 10.95 B @Unger, S. B-V=0.10 Nova 1993 03 31.1 10.74 R @Unger, S. Nova 1993 03 31.1 10.62 I @Unger, S. Nova 1993 03 31.13 10.5 mv Cainciolo, F. IAUC 5736 1993 03 31.13 10.5 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 03 31.130 10.6 mv TA+ Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 03 31.130 &1 revised magnitude 1993 03 31.17 10.79 V Balonek, T. J. CCD IAUC 5746 1993 03 31.17 &1 et al. #2 1993 03 31.2 10.7 R Salzer, J. et al. IAUC 5741 1993 03 31.2 10.9 J Barker, E. et al. McDonald Obs. team Mail(gav) 1993 03 31.2 10.60 K Barker, E. et al. McDonald Obs. team Mail(gav) 1993 03 31.21 10.81 V Neely, A. W. #2 CCD IAUC 5742 1993 03 31.21 10.4 C Neely, A. W. #2 CCD IAUC 5742 1993 03 31.22 9.85 U Richmond Berkeley News 1993 03 31.22 10.95 B Richmond Berkeley News 1993 03 31.22 10.82 V Richmond Berkeley News 1993 03 31.22 10.69 R C Richmond Berkeley News 1993 03 31.22 10.58 I C Richmond Berkeley News 1993 03 31.250 10.7 mv AC Benge USA-TX Mail(rw) 1993 03 31.26 10.82 V Balonek, T. J. CCD IAUC 5746 1993 03 31.26 &1 et al. #2 1993 03 31.38 10.5 mv TB Rhoads Princeton News(rw) 1993 03 31.40 10.3 mv TA Hornby, P. TA E731 1993 03 31.424 10.5 mv TB Yamada, M. Mail(kat) 1993 03 31.440 10.5 mv TB Yamada, M. Mail(kat) 1993 03 31.576 10.5 mv TB Kato, T. 20cm-SCT Mail(kat) 1993 03 31.596 10.6 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 03 31.596 &1 corrected mag. Mail(kat) 1993 03 31.82 10.6 mv Pietz, J. Mail(jah) 1993 03 31.84 10.5 mv TA Zanotta, M. V. and IAUC 5737 1993 03 31.84 &1 Pesci, S . 1993 03 31.844 10.6 mv T1 Garcia, F. Mail(grl) 1993 03 31.844 &1 Corrected Mail(gav) 1993 03 31.854 10.6 mv Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 03 31.854 &1 Corrected Mail(gav) 1993 03 31.885 10.5 mv Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 03 31.885 &1 Corrected Mail(gav) 1993 03 31.9 10.57 J Calamai Gornergrat IAUC 5741 1993 03 31.9 10.48 H Calamai Gornergrat IAUC 5741 1993 03 31.9 10.41 K Calamai Gornergrat IAUC 5741 1993 03 31.9 10.63 U @Unger, S. Nova 1993 03 31.9 11.06 V @Unger, S. B-V=0.22 Nova 1993 03 31.9 11.28 B @Unger, S. B-V=0.22 Nova 1993 03 31.9 10.85 R @Unger, S. Nova 1993 03 31.9 10.66 I @Unger, S. Nova 1993 03 31.93 10.5 mv Garcia, F. 25-cm refl. Mail(grl) 1993 03 31.961 10.97 V Hanzl, D. B-V=+0.33 IAUC 5742 1993 03 31.961 11.30 B Hanzl, D. B-V=+0.33 IAUC 5742 1993 03 31.969 10.7 mv Hasubick, W. TA E731 1993 03 31.970 10.6 mv Shanklin, J. TA E731 1993 03 31.972 10.94 V Sostero, G. et al. Correction IAUC 5750 IAUC 5741 1993 03 31.972 11.31 B Sostero, G. et al. Correction IAUC 5750 IAUC 5741 1993 04 01.00 11.29 B C Prugniel, P. #1 CCD, B-R=+0.45 IAUC 5741 1993 04 01.00 10.80 R C Prugniel, P. #1 CCD, B-R=+0.45 IAUC 5741 1993 04 01.020 10.90 V Sostero, G. et al. B-V=+0.40 IAUC 5750 1993 04 01.020 11.30 B Sostero, G. et al. B-V=+0.40 IAUC 5750 1993 04 01.055 10.4 mv Beauchamp, D. 20.3-cm SCT. Class 2 Mail(grl) 1993 04 01.083 10.7 mv TB Schmeer, P. 20.3-cm SCT IAUC 5740 1993 04 01.13 10.4 mv TB Cianciolo, F. U. of Texas, Austin Mail(gav) 1993 04 01.13 &1 et al. 41-cm refl. 1993 04 01.14 10.5 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 01.18 11.08 V Neely, A. W. #2 IAUC 5742 1993 04 01.18 11.0 C Neely, A. W. #2 IAUC 5742 1993 04 01.21 11.07 V Balonek, T. J. CCD IAUC 5746 1993 04 01.21 &1 et al. #2 1993 04 01.21 10.54 J Odewahn, S. and 1.3m KPNO +SQIID IAUC 5760 1993 04 01.21 &1 Woodward, C. E. 1993 04 01.21 10.47 H Odewahn, S. and 1.3m KPNO +SQIID IAUC 5760 1993 04 01.21 &1 Woodward, C. E. 1993 04 01.21 10.37 K Odewahn, S. and 1.3m KPNO +SQIID IAUC 5760 1993 04 01.21 &1 Woodward, C. E. 1993 04 01.40 11.13 V Balonek, T. J. CCD IAUC 5746 1993 04 01.40 &1 et al. #2 1993 04 01.40 11.11 V HC McDavid, D. 40-cm + CCD Mail 1993 04 01.40 11.36 B HC McDavid, D. 40-cm + CCD Mail 1993 04 01.453 10.5 mv TB Takahashi, S. 20cm refr. Mail(kat) 1993 04 01.465 10.5 mv TB Iida, M. Mail(kat) 1993 04 01.480 10.6 mv Momose ? 1993 04 01.499 11.49 B HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 01.499 11.21 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 01.499 10.98 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 01.499 10.74 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 01.538 10.4 mv TB Kato, T. 20cm SCT Mail(kat) 1993 04 01.58 10.8 p TB Kushida 40-cm + Fuji SG400 Mail(kat) 1993 04 01.604 11.0 mv TB Kiyota, S. 20cm refl. Mail(kat) 1993 04 01.622 10.4 mv TB Watanabe, Y. 12cm refl. Mail(kat) 1993 04 01.632 11.2 mv TB Shioi, H. 20cm refl. Mail(kat) 1993 04 01.633 10.5 p TB Kushida, Y. 40cm f/5, Mail(kat) 1993 04 01.633 &1 Tri-X no filter 1993 04 01.65 11.5 C Neely, A. W. #2 Mail(gav) 1993 04 01.660 11.22 V Okyudo, M. 60cm refl.+ CCD Mail(kat) 1993 04 01.660 &1 Nishi-Harima Obs. 1993 04 01.726 10.9 mv TB Watanabe, T. 10cm refl. Mail(kat) 1993 04 01.750 11.0 mv TB Koyama, H. 15cm refl. Mail(kat) 1993 04 01.785 10.8 p TB Koyama, H. 15cm f/6, GX 3200 Mail(kat) 1993 04 01.795 10.5 mv TB Hirosawa, K. 21cm refl. Mail(kat) 1993 04 01.81 10.5 mv Vanmunster, T. IAUC 5740 1993 04 01.816 11.19 V Hanzl, D. B-V=0.32 IAUC 5742 1993 04 01.816 11.51 B Hanzl, D. B-V=0.32 IAUC 5742 1993 04 01.833 10.5: mv TB Bremseth, P.-J. 20.3-cm SCT 111x Mail(grl) 1993 04 01.833 &1 Ranheim, Norway 1993 04 01.84 10.4 mv Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 01.86 11.32 V Mikolajewski, M. IAUC 5742 1993 04 01.86 11.58 B Mikolajewski, M. IAUC 5742 1993 04 01.86 10.95 R J Mikolajewski, M. IAUC 5742 1993 04 01.86 10.95 I J Mikolajewski, M. IAUC 5742 1993 04 01.863 10.7 mv TB Mizon, W. Nova(gmh) 1993 04 01.87 10.5 mv T1 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 01.874 11.2 mv TB Toone, J. Nova(gmh) 1993 04 01.88 10.6 mv Pujol, F. 31-cm refl. Mail(grl) 1993 04 01.89 11.2 mv Pietz, J. Mail(jah) 1993 04 01.9 11.03 U @Unger, S. Nova 1993 04 01.9 11.31 V @Unger, S. B-V=0.29 Nova 1993 04 01.9 11.60 B @Unger, S. B-V=0.29 Nova 1993 04 01.9 11.06 R @Unger, S. Nova 1993 04 01.9 10.85 I @Unger, S. Nova 1993 04 01.997 10.7 mv TB Fleet, R. Nova(gmh) 1993 04 02.042 10.6 mv TB Kratz, D. 20-cm f/3.5 refl. News 1993 04 02.1 11.24 U @Unger, S. Nova 1993 04 02.1 11.41 V @Unger, S. B-V=0.32 Nova 1993 04 02.1 11.73 B @Unger, S. B-V=0.32 Nova 1993 04 02.1 11.15 R @Unger, S. Nova 1993 04 02.1 10.91 I @Unger, S. Nova 1993 04 02.12 11.46 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 02.13 11.37 V Balonek, T. J. CCD IAUC 5746 1993 04 02.13 &1 et al. #2 1993 04 02.13 11.33 V HC McDavid, D. 40-cm + CCD Mail 1993 04 02.13 11.64 B HC McDavid, D. 40-cm + CCD Mail 1993 04 02.15 11.45 V Neely, A. W. #2 IAUC 5742 1993 04 02.15 11.5 C Neely, A. W. #2 CCD IAUC 5742 1993 04 02.15 10.6 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 02.158 11.5 mv AC Benge USA-TX Mail(rw) 1993 04 02.17 10.8 mv TB Cianciolo, F. U. of Texas, Austin Mail(gav) 1993 04 02.17 &1 et al. 41-cm refl. 1993 04 02.17 11.4 mv Spratt, C. Victoria, BC IAUC 5757 1993 04 02.2 10.4 K Wheeler MacDonald IAUC 5743 1993 04 02.20 10.79 U Richmond Berkeley News 1993 04 02.20 11.77 B Richmond Berkeley News 1993 04 02.20 11.39 V Richmond Berkeley News 1993 04 02.20 11.13 R C Richmond Berkeley News 1993 04 02.20 11.12 I C Richmond Berkeley News 1993 04 02.22 11.39 V Balonek, T. J. CCD IAUC 5746 1993 04 02.22 &1 et al. #2 1993 04 02.3 10.7 J Wheeler MacDonald News(rw) 1993 04 02.31 10.62 J Odewahn, S. and 1.3m KPNO +SQIID IAUC 5760 1993 04 02.31 &1 Woodward, C. E. 1993 04 02.31 10.49 H Odewahn, S. and 1.3m KPNO +SQIID IAUC 5760 1993 04 02.31 &1 Woodward, C. E. 1993 04 02.31 10.33 K Odewahn, S. and 1.3m KPNO +SQIID IAUC 5760 1993 04 02.31 &1 Woodward, C. E. 1993 04 02.310 11.1 mv TB Hornby, P. Nova(gmh) 1993 04 02.32 11.40 V HC McDavid, D. 40-cm + CCD Mail 1993 04 02.32 11.71 B HC McDavid, D. 40-cm + CCD Mail 1993 04 02.37 11.45 V Balonek, T. J. CCD IAUC 5746 1993 04 02.37 &1 et al. #2 1993 04 02.40 11.43 V HC McDavid, D. 40-cm + CCD Mail 1993 04 02.40 11.77 B HC McDavid, D. 40-cm + CCD Mail 1993 04 02.439 11.0 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 02.453 10.9 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 02.494 11.50 V Kato, T. 60cm, CCD Mail(kat) 1993 04 02.511 11.83 B HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 02.511 11.48 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 02.511 11.21 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 02.511 10.94 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 02.585 11.1 mv TB Watanabe, M. 13cm refl. Mail(kat) 1993 04 02.608 11.5 mv TB Sakuma, S. 40cm refl. Mail(kat) 1993 04 02.611 11.78 B Kato, T. 60cm, CCD Mail(kat) 1993 04 02.637 11.08 I C Kato, T. 60cm, CCD Mail(kat) 1993 04 02.716 10.6 mv TB Abe, S. 31cm refl. Mail(kat) 1993 04 02.828 11.7 mv TB Midtskogen, O. 31.6cm refl 130x Mail(grl) 1993 04 02.831 11.1 mv TB+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 02.831 &1 Oslo, Norway 1993 04 02.837 11.2 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 02.84 10.8 mv TA Andersson, K.-G. 15.5-cm refl. Mail(grl) 1993 04 02.84 11.2 mv Ripero, J. 33.5-cm refl. Mail(grl) 1993 04 02.843 11.3 mv TB Poyner, G. 40-cm refl. Mail 1993 04 02.844 11.4 mv TA Taylor, M. Nova(gmh) 1993 04 02.847 10.7 mv TA Mizon, W. Nova(gmh) 1993 04 02.847 11.5 mv TA McKim, R. Nova(gmh) 1993 04 02.855 11.58 C TA+ Helbak, K. 20-cm f/4 + ST-4 CCD Mail(grl) 1993 04 02.855 &1 Slependen, Norway 1993 04 02.860 11.4 mv TA Shanklin, J. Nova(gmh) 1993 04 02.863 11.57 C TA+ Helbak, K. 20-cm f/4 + ST-4 CCD Mail(grl) 1993 04 02.865 11.8 mv TB Marriott, G. Nova(gmh) 1993 04 02.867 11.3 mv TB Granslo, B. H. 20.3-cm SCT, 123x, Mail(grl) 1993 04 02.872 11.57 C TA+ Helbak, K. 20-cm f/4 + ST-4 CCD Mail(grl) 1993 04 02.876 11.2 mv TA Taylor, M. Nova(gmh) 1993 04 02.881 11.2 mv TA Taylor, M. Nova(gmh) 1993 04 02.884 12.0 mv TA Hurst, G. Nova(gmh) 1993 04 02.890 11.2 mv TA Taylor, M. Nova(gmh) 1993 04 02.89 12.18 B @Steele, I. 40cm refl. CCD Nova 1993 04 02.89 11.60 V @Steele, I. 40cm refl. CCD Nova 1993 04 02.89 11.24 R C @Steele, I. 40cm refl. CCD Nova 1993 04 02.89 11.12 I C @Steele, I. 40cm refl. CCD Nova 1993 04 02.895 11.4 mv TA Middleton, K. Nova(gmh) 1993 04 02.906 11.2 mv TA Taylor, M. Nova(gmh) 1993 04 02.91 11.86 B Hanzl IAUC 5747 1993 04 02.91 11.36 V Hanzl IAUC 5747 1993 04 02.917 11.0 mv Washington, C. Mail(gmh) 1993 04 02.93 11.42 V Morrison et al. IAUC 5767 1993 04 02.95 11.5 mv TB Bengtsson, H. 15-cm refl. Mail(grl) 1993 04 02.950 11.9 mv TA Haymes, T. Nova(gmh) 1993 04 02.962 11.5 mv Porter, M. Nova(gmh) 1993 04 02.969 11.5 mv TA Evans, N. Nova(gmh) 1993 04 02.972 11.4 mv TA Fleet, R. Nova(gmh) 1993 04 02.980 11.1 mv TA Pantrher Mail(gmh) 1993 04 03.011 11.3 mv TA+ Granslo, B. H. 20.3-cm SCT, 123x Mail(grl) 1993 04 03.03 11.7 C Kessler, T. 15.0-cm + ST-4 CCD Mail(jah) 1993 04 03.11 11.3 mv TB Skartlien, R. 25.4cm refl, 108x Mail(grl) 1993 04 03.11 &1 Haagaar Obs., Norway 1993 04 03.127 11.8 mv TA Day, J. Nova(gmh) 1993 04 03.13 11.67 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 03.15 11.4 mv TB Buta, R. U. Alabama Mail(gav) 1993 04 03.16 12.10 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5750 1993 04 03.16 11.40 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5750 1993 04 03.18 11.2 mv TB Wren, W. McDolanld Obs. Mail(gav) 1993 04 03.18 &1 time corrected 1993 04 03.2 11.98 B Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 03.2 &1 Sauerbrei, P. 1993 04 03.2 11.69 V Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 03.2 &1 Sauerbrei, P. 1993 04 03.2 11.23 R J Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 03.2 &1 Sauerbrei, P. 1993 04 03.2 10.96 I J Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 03.2 &1 Sauerbrei, P. 1993 04 03.20 11.55 U Richmond Berkeley News 1993 04 03.20 12.03 B Richmond Berkeley News 1993 04 03.20 11.68 V Richmond Berkeley News 1993 04 03.20 11.35 R C Richmond Berkeley News 1993 04 03.20 11.08 I C Richmond Berkeley News 1993 04 03.22 11.52 U Richmond Berkeley News 1993 04 03.22 12.02 B Richmond Berkeley News 1993 04 03.22 11.67 V Richmond Berkeley News 1993 04 03.22 11.36 R C Richmond Berkeley News 1993 04 03.22 11.08 I C Richmond Berkeley News 1993 04 03.28 11.5 mv Johnson, W. Anza, CA IAUC 5757 1993 04 03.299 11.75 V GS RoboScope 40.6-cm refl.+ Mail(grl) 1993 04 03.299 &1 AutomaticTelescope 512x512 Tektronix CCD 1993 04 03.299 &2 (c/o Turner, G.W.) Univ. Indiana 1993 04 03.299 &3 Differential photometry 1993 04 03.310 11.1 mv TB Hornby, P. Nova(gmh) 1993 04 03.342 11.78 V GS RoboScope Aut.Tel. 40.6-cm refl.+ CCD Mail(grl) 1993 04 03.342 &1 (c/o Turner, G.W.) Univ. Indiana 1993 04 03.369 11.76 V GS RoboScope Aut.Tel. 40.6-cm refl.+ CCD Mail(grl) 1993 04 03.369 &1 (c/o Turner, G.W.) Univ. Indiana 1993 04 03.385 11.77 V GS RoboScope Aut.Tel. 40.6-cm refl.+ CCD Mail(grl) 1993 04 03.385 &1 (c/o Turner, G.W.) Univ. Indiana 1993 04 03.39 10.91 J Lawrence, G. F. Univ. of Minnesota IAUC 5757 1993 04 03.39 &1 and Paulson, A. 0.76m 1993 04 03.39 10.66 H Lawrence, G. F. Univ. of Minnesota IAUC 5757 1993 04 03.39 &1 and Paulson, A. 0.76m 1993 04 03.39 10.48 K Lawrence, G. F. Univ. of Minnesota IAUC 5757 1993 04 03.39 &1 and Paulson, A. 0.76m 1993 04 03.448 11.3 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 03.530 12.25 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 03.530 11.76 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 03.530 11.42 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 03.530 11.14 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 03.555 11.76 V Kato, Taichi 60cm, CCD Mail(kat) 1993 04 03.561 12.09 B Kato, Taichi 60cm, CCD Mail(kat) 1993 04 03.574 11.15 I C Kato, Taichi 60cm, CCD Mail(kat) 1993 04 03.574 11.5 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 03.66 11.8 mv TB Kushida, R. Mail(kat) 1993 04 03.68 11.9 mv TB Kushida, Y. Mail(kat) 1993 04 03.71 11.4 mv TB Onodera, O. 25cm SCT 128x News 1993 04 03.831 11.0 mv TB Dahle, H. 20.3-cm SCT, 200x Mail(grl) 1993 04 03.837 11.2 mv TB Dahle, H. 20.3-cm SCT, 200x Mail(grl) 1993 04 03.838 11.8 mv TA Midtskogen, O. 31.6cm refl. 62x Mail(grl) 1993 04 03.84 11.3 mv T1 Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 03.862 11.4 mv TA Westlund, M. 20.3-cm SCT Mail(grl) 1993 04 03.862 &1 Uppsala, Sweden 1993 04 03.93 11.2 mv T1 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 04.029 11.6 mv TB Schmeer, P. 20.3-cm SCT IAUC 5757 1993 04 04.069 12.0 mv TB Chaloux, D. 20cm f/5, 105x News 1993 04 04.069 &1 revised mag. Mail(grl) 1993 04 04.083 10.8 mv TB Kratz, D. 20-cm f/3.5 refl. News 1993 04 04.1 11.81 V Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 04.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 04.1 12.26 B Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 04.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 04.1 11.50 R *Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 04.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 04.1 11.24 I *Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 04.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 04.13 11.81 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 04.17 11.9 mv TB Wren, W. 60-cm refl. Mail(gav) 1993 04 04.2 12.19 B Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 04.2 &1 Sauerbrei, P. 1993 04 04.2 11.86 V Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 04.2 &1 Sauerbrei, P. 1993 04 04.2 11.37 R J Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 04.2 &1 Sauerbrei, P. 1993 04 04.2 11.13 I J Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 04.2 &1 Sauerbrei, P. 1993 04 04.23 12.1 mv TB Rhoads Princeton News 1993 04 04.81 11.9 mv Pietz, J. Mail(jah) 1993 04 04.826 11.78 U Lyuty, V. M. Ukraine News 1993 04 04.826 12.05 B Lyuty, V. M. Ukraine News 1993 04 04.826 11.81 V Lyuty, V. M. Ukraine News 1993 04 04.833 11.3 mv TB Bremseth, P.-J. 20.3-cm SCT 166x Mail(grl) 1993 04 04.843 11.97 U Lyuty, V. M. Ukraine News 1993 04 04.843 12.18 B Lyuty, V. M. Ukraine News 1993 04 04.843 11.86 V Lyuty, V. M. Ukraine News 1993 04 04.856 11.8 mv TA McKim, R. Nova(gmh) 1993 04 04.893 11.8 mv TA Taylor, M. Nova(gmh) 1993 04 04.901 11.8 mv TA Ewen-Smith, B. Nova(gmh) 1993 04 04.932 11.8 mv AC Korth, S. Mail(jah) 1993 04 04.950 11.7 mv TA Shanklin, J. Nova(gmh) 1993 04 05. 11.84 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 05.00 12.35 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5750 1993 04 05.00 11.55 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5750 1993 04 05.03 11.8 mv Bortle, J. Stormville, NY IAUC 5757 1993 04 05.040 12.0: mv TA Beauchamp, D. 20.3-cm SCT 154x Mail(grl) 1993 04 05.1 11.86 V Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 05.1 &1 Sauerbrei, P. 1993 04 05.1 11.34 R J Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 05.1 &1 Sauerbrei, P. 1993 04 05.1 11.03 I J Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 05.1 &1 Sauerbrei, P. 1993 04 05.1 11.96 V Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 05.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 05.1 12.30 B Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 05.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 05.1 11.51 R *Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 05.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 05.1 11.30 I *Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 05.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 05.10 11.6 mv TB Viens Quebec News(rw) 1993 04 05.11 11.76 V TB Ferguson Ohio News(rw) 1993 04 05.11 11.80 C HC Ferguson, D. C., 10-cm refr.+LYNXX CCD Mail(grl) 1993 04 05.11 &1 Morton, T. L., Baldwin Wallace Coll. 1993 04 05.11 &2 and Snyder, D. B. Berea, Ohio 1993 04 05.12 11.86 V HC McDavid, D. 40-cm + CCD Mail 1993 04 05.12 12.24 B HC McDavid, D. 40-cm + CCD Mail 1993 04 05.120 11.9 mv TB Schmeer, P. 20.3-cm SCT Mail 1993 04 05.15 11.6 mv TB Levy, S. 20.3-cm SCT, 133x News 1993 04 05.15 &1 Univ. Minnesota 1993 04 05.19 12.0 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 05.26 11.86 V HC McDavid, D. 40-cm + CCD Mail 1993 04 05.26 12.27 B HC McDavid, D. 40-cm + CCD Mail 1993 04 05.271 11.8 mv Royer, R. Lakewood, CA IAUC 5757 1993 04 05.310 12.2 mv TB Hornby, P. Nova(gmh) 1993 04 05.37 11.85 V HC McDavid, D. 40-cm + CCD Mail 1993 04 05.37 12.26 B HC McDavid, D. 40-cm + CCD Mail 1993 04 05.431 11.8 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 05.438 12.2 mv TB Kiyota, S. 20cm, correction Mail(kat) 1993 04 05.444 12.0 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 05.489 11.88 V Kato, Taichi 60cm, CCD Mail(kat) 1993 04 05.50 12.0 mv TB Onodera, O. 25cm SCT 128x News 1993 04 05.513 11.24 I C Kato, Taichi 60cm, CCD Mail(kat) 1993 04 05.517 12.0 mv TB Kushida, Y. 45cm refl. Mail(kat) 1993 04 05.517 12.0 mv TB Kushida, R. 45cm refl. Mail(kat) 1993 04 05.519 11.83 C TB Fujita, Y. 60cm f/6 refl. CCD Mail(kat) 1993 04 05.519 &1 Kuma-Kougen Obs. 1993 04 05.524 12.2 mv TB Watanabe, T. 10cm refl. Mail(kat) 1993 04 05.539 12.31 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 05.539 11.85 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 05.539 11.48 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 05.539 11.26 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 05.549 12.25 B Kato, Taichi 60cm, CCD Mail(kat) 1993 04 05.566 12.1 mv TB Watanabe, Y. 20cm SCT Mail(kat) 1993 04 05.573 11.9 mv TB Koyama, H. 15cm refl. Mail(kat) 1993 04 05.589 11.8 C TB Kushida, Y. 40cm, ST-4 CCD Mail(kat) 1993 04 05.614 11.89 V Kato, Taichi 60cm, CCD Mail(kat) 1993 04 05.619 11.9 p TB Koyama, H. 15cm refl., GX 3200 Mail(kat) 1993 04 05.624 12.2 mv TB Abe, S. 16cm refl. Mail(kat) 1993 04 05.642 12.1 mv TB Shioi, H. 20cm refl. Mail(kat) 1993 04 05.652 12.0 mv TB Ohkura, N. 35.5cm SCT 98x Mail(kat) 1993 04 05.660 11.98 V Okyudo, M and 60cm refl. + CCD Mail(kat) 1993 04 05.660 &1 Ishida, T. Nishi-Harima Obs. 1993 04 05.669 12.25 B Kato, Taichi 60cm, CCD Mail(kat) 1993 04 05.684 12.0 mv TB Watanabe, S. 16cm refl. Mail(kat) 1993 04 05.713 11.08 I C Kato, Taichi 60cm, CCD Mail(kat) 1993 04 05.830 11.7 mv TB Bremseth, P.-J. 20.3-cm SCT 111x Mail(grl) 1993 04 05.85 11.9 mv T1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 05.93 11.87 V Mikolajewski, M. N. Copernicus Univ. IAUC 5750 1993 04 05.93 &1 and Belcznski, K. Torun 1993 04 05.93 12.37 B Mikolajewski et al. N. Copernicus Univ. IAUC 5750 1993 04 05.93 11.90 U Mikolajewski et al. N. Copernicus Univ. IAUC 5750 1993 04 05.93 11.35 R J Mikolajewski et al. N. Copernicus Univ. IAUC 5750 1993 04 05.93 10.97 I J Mikolajewski et al. N. Copernicus Univ. IAUC 5750 1993 04 05.950 12.1 mv TA Shanklin, J. Nova(gmh) 1993 04 05.954 11.8 mv TA Ewen-Smith, B. Nova(gmh) 1993 04 05.99 12.0 mv Pietz, J. Mail(jah) 1993 04 06.007 11.9 mv TA+ Andersen, O. I. 20.3-cm refl. 135x Mail(grl) 1993 04 06.007 &1 Malm, Norway 1993 04 06.009 11.9 mv TA+ Granslo, B. H. 20.3-cm refl. 135x Mail(grl) 1993 04 06.009 &1 Malm, Norway 1993 04 06.092 11.9 mv TA+ Granslo, B. H. 15.2-cm refl. 135x Mail(grl) 1993 04 06.099 11.7 mv TB Beauchamp, D. 20.3-cm SCT 154x Mail(grl) 1993 04 06.1 11.86 V Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 06.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 06.1 11.45 R *Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 06.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 06.11 11.82 V HC McDavid, D. 40-cm + CCD Mail 1993 04 06.11 12.23 B HC McDavid, D. 40-cm + CCD Mail 1993 04 06.140 11.7 mv TB Beauchamp Quebec News(rw) 1993 04 06.174 12.1 mv TB Bryan, J. 25cm refl. 120x Mail 1993 04 06.20 11.83 V Richmond Berkeley News 1993 04 06.20 11.35 R C Richmond Berkeley News 1993 04 06.20 11.21 I C Richmond Berkeley News 1993 04 06.21 11.8 mv TB Viens Quebec News(rw) 1993 04 06.22 11.89 U Richmond Berkeley News 1993 04 06.22 12.24 B Richmond Berkeley News 1993 04 06.22 11.84 V Richmond Berkeley News 1993 04 06.22 11.47 R C Richmond Berkeley News 1993 04 06.22 11.24 I C Richmond Berkeley News 1993 04 06.24 11.81 V HC McDavid, D. 40-cm + CCD Mail 1993 04 06.24 12.21 B HC McDavid, D. 40-cm + CCD Mail 1993 04 06.26 11.7 mv T1 Dillon, W. G. Missouri City, TX IAUC 5757 1993 04 06.260 11.7 mv TB Hornby, P. Nova(gmh) 1993 04 06.265 11.8 mv TB Beauchamp, D. 25.4-cm refl. 71x Mail(grl) 1993 04 06.428 11.8 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 06.442 11.9 mv TB Yamada, M. Mail(kat) 1993 04 06.485 11.84 V Kato, Taichi 60cm, CCD Mail(kat) 1993 04 06.5 12.21 B Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 06.5 &1 Sauerbrei, P. 1993 04 06.5 11.85 V Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 06.5 &1 Sauerbrei, P. 1993 04 06.5 11.28 R J Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 06.5 &1 Sauerbrei, P. 1993 04 06.5 11.11 I J Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 06.5 &1 Sauerbrei, P. 1993 04 06.511 11.29 I C Kato, Taichi 60cm, CCD Mail(kat) 1993 04 06.538 12.23 B Kato, Taichi 60cm, CCD Mail(kat) 1993 04 06.549 11.76 C TB Fujita, Y. 60cm f/6 refl. CCD Mail(kat) 1993 04 06.549 &1 Kuma-Kougen Obs. 1993 04 06.553 11.8 C TB Kushida, Y. 40cm refl, ST-4 CCD Mail(kat) 1993 04 06.570 11.6 p TB Ohno, I. 20cm f/8.0 Mail(kat) 1993 04 06.570 &1 Fuji Color SG400 1993 04 06.593 12.25 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 06.593 11.78 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 06.593 11.37 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 06.593 11.20 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 06.685 11.79 V Kato, Taichi 60cm, CCD Mail(kat) 1993 04 06.720 12.19 B Kato, Taichi 60cm, CCD Mail(kat) 1993 04 06.739 11.23 I C Kato, Taichi 60cm, CCD Mail(kat) 1993 04 06.840 11.2 mv TB Bremseth, P.-J. 20.3-cm SCT 111x Mail(grl) 1993 04 06.849 11.8 mv TB Taylor, M. Nova(gmh) 1993 04 06.85 11.9 mv T1 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 06.856 11.9 mv TA Ewen-Smith, B. Nova(gmh) 1993 04 06.861 11.8 mv TA Day, J. Nova(gmh) 1993 04 06.864 12.0 mv TA Hurst, G. Nova(gmh) 1993 04 06.865 11.8 mv TA Caswell, R. Nova(gmh) 1993 04 06.87 12.0 mv T1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 06.87 12.0 C T1 Rodriguez, D. 20-cm f/4 refl. + CCD Mail(grl) 1993 04 06.87 12.0 mv Pietz, J. Mail(jah) 1993 04 06.870 12.1 mv TA Shanklin, J. Nova(gmh) 1993 04 06.880 11.8 mv TA Haymes, T. Nova(gmh) 1993 04 06.882 11.6 mv TA Taylor, M. Nova(gmh) 1993 04 06.89 12.0 mv T1 Carvajal, J. 31-cm f/4.5 refl. Mail(grl) 1993 04 06.895 11.7 mv TB Poyner, G. 40cm refl. Mail 1993 04 06.903 12.0 mv TA+ Granslo, B. H. 15.2-cm refl. 135x Mail(grl) 1993 04 06.930 11.9 mv TA Panther Mail(gmh) 1993 04 07.00 12.25 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5758 1993 04 07.00 11.43 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5758 1993 04 07.052 11.8 V Smith, H. and IAUC 5758 1993 04 07.052 &1 Lansing, E. 1993 04 07.072 11.8 mv TB Beauchamp, D. 20.3-xm SCT 154x Mail(grl) 1993 04 07.095 11.5 mv TA Lubek Mail(gmh) 1993 04 07.14 11.71 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 07.16 11.7 mv TB Viens Quebec News(rw) 1993 04 07.170 11.8 mv TB Hornby, P. Nova(gmh) 1993 04 07.22 11.96 U Richmond Berkeley News 1993 04 07.22 12.15 B Richmond Berkeley News 1993 04 07.22 11.74 V Richmond Berkeley News 1993 04 07.22 11.36 R C Richmond Berkeley News 1993 04 07.22 11.15 I C Richmond Berkeley News 1993 04 07.23 11.6 mv TB Wren, W. IAUC 5757 1993 04 07.24 11.90 U Richmond Berkeley News 1993 04 07.24 12.17 B Richmond Berkeley News 1993 04 07.24 11.73 V Richmond Berkeley News 1993 04 07.24 11.37 R C Richmond Berkeley News 1993 04 07.24 11.16 I C Richmond Berkeley News 1993 04 07.30 11.94 U Richmond Berkeley News 1993 04 07.30 12.15 B Richmond Berkeley News 1993 04 07.30 11.72 V Richmond Berkeley News 1993 04 07.30 11.24 R C Richmond Berkeley News 1993 04 07.30 11.15 I C Richmond Berkeley News 1993 04 07.431 11.7 mv TB Yamada, M. 16cm refl. Mail 1993 04 07.483 11.7 mv TB Funada, M. 13cm refl. 151x Mail 1993 04 07.496 11.70 V Kato, Taichi 60cm, CCD Mail 1993 04 07.522 11.8 mv TB Watanabe, T. 10cm refl. Mail 1993 04 07.532 12.11 B Kato, Taichi 60cm, CCD Mail 1993 04 07.537 12.0 mv TB Sekino, Y. 28cm refl. Mail 1993 04 07.567 11.18 I C Kato, Taichi 60cm, CCD Mail 1993 04 07.56 11.75 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 07.56 12.10 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 07.56 11.71 V HC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 07.56 11.18 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 07.56 10.93 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 07.589 11.73 V Kato, Taichi 60cm, CCD Mail 1993 04 07.596 11.7 mv TB Takahashi, S. 60cm refl. Mail 1993 04 07.610 11.69 V Okyudo, M and 60cm refl. + CCD Mail 1993 04 07.610 &1 Ishida, T. Nishi-Harima Obs. 1993 04 07.667 12.18 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 07.667 11.65 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 07.667 11.23 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 07.667 11.14 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 07.83 11.9 mv T1 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 07.84 12.1 mv T1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 07.903 11.4 mv TB Bremseth, P.-J. 20.3-cm SCT 111x Mail(grl) 1993 04 07.91 12.0 C T1 Rodriguez, D. 20-cm f/4 refl. + CCD Mail(grl) 1993 04 07.92 11.50 V Morrison et al. IAUC 5767 1993 04 07.933 11.7 mv TA Ewen-Smith, B. Nova(gmh) 1993 04 08.00 12.14 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5758 1993 04 08.00 11.31 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5758 1993 04 08.031 11.5 mv TB Kratz, D. 20-cm f/3.5 refl. News 1993 04 08.042 11.5 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 08.08 11.4 mv Heil, C. Andover, MA IAUC 5757 1993 04 08.08 11.7 mv TB Rhoads Princeton Mail(rw) 1993 04 08.08 11.6 mv TB Wijers Mail(rw) 1993 04 08.1 11.5 mv TB Richmond, M. 23cm refr. News 1993 04 08.11 11.61 V HC McDavid, D. 40-cm + CCD Mail 1993 04 08.110 11.8 mv AC Benge USA-TX Mail(rw) 1993 04 08.118 11.6 mv TB Bryan, J. 25cm refl. 80x Mail 1993 04 08.150 12.0 mv TB Hornby, P. Nova(gmh) 1993 04 08.17 11.7 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 08.21 11.86 U Richmond Berkeley News 1993 04 08.21 12.05 B Richmond Berkeley News 1993 04 08.21 11.62 V Richmond Berkeley News 1993 04 08.21 11.26 R C Richmond Berkeley News 1993 04 08.21 11.07 I C Richmond Berkeley News 1993 04 08.24 11.90 U Richmond Berkeley News 1993 04 08.24 12.06 B Richmond Berkeley News 1993 04 08.24 11.62 V Richmond Berkeley News 1993 04 08.24 11.10 R C Richmond Berkeley News 1993 04 08.24 11.07 I C Richmond Berkeley News 1993 04 08.32 11.92 U Richmond Berkeley News 1993 04 08.32 12.05 B Richmond Berkeley News 1993 04 08.32 11.61 V Richmond Berkeley News 1993 04 08.32 11.18 R C Richmond Berkeley News 1993 04 08.32 11.06 I C Richmond Berkeley News 1993 04 08.417 11.9 mv TB Kiyota, S. 20cm refl. Mail(kat) 1993 04 08.451 11.3 mv TB Iida, M. Mail(kat) 1993 04 08.451 &1 (tentative correction +0.4, original 10.9 mv GSC) 1993 04 08.501 11.8 mv TB Sekino, Y. 28cm refl. Mail(kat) 1993 04 08.521 11.5 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 08.528 11.6 C TB Kushida, Y. 40cm refl, CCD Mail(kat) 1993 04 08.576 11.68 V Okyudo, M and 60cm refl. + CCD IAUC 5760 1993 04 08.576 &1 Ishida, T. Nishi-Harima Obs. 1993 04 08.615 11.9 mv TB Watanabe, Y. 12cm refl. Mail(kat) 1993 04 08.620 12.05 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 08.620 11.56 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 08.620 11.19 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 08.620 11.04 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 08.625 11.7 mv TB Ohkura, N. 35.5cm SCT 98x Mail(kat) 1993 04 08.692 11.5 mv TB Watanabe, T. 10cm refl. Mail(kat) 1993 04 08.800 11.4 mv TA Tanti, T. Mail(gmh) 1993 04 08.83 12.1 mv T1 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 08.83 12.0 mv T1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 08.838 11.8 mv TA Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 04 08.840 11.5 mv TA Bengtsson, H. Nova(gmh) 1993 04 08.86 11.6 mv TA Andersson, K.-G. 25.5-cm refl. Mail(grl) 1993 04 08.864 11.5 mv TA Westlund, M. 20.3-cm SCT Nova(gmh) 1993 04 08.868 11.4 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 08.89 11.9 mv T1 Carvajal, J 31-cm f/4.5 refl. Mail(grl) 1993 04 08.901 11.8 mv TA Ewen-Smith, B. Nova(gmh) 1993 04 08.91 11.47 V Morrison et al. IAUC 5767 1993 04 08.938 11.8 mv TB Schmeer, P. 20cm SCT Mail 1993 04 08.948 11.6 mv TA+ Skjaeraasen, O. 20.3-cm SCT 77x Mail(grl) 1993 04 08.985 11.6 mv TA+ Skjaeraasen, O. 20.3-cm SCT 77x Mail(grl) 1993 04 09.00 12.04 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5758 1993 04 09.00 11.21 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5758 1993 04 09.028 11.6 mv TA+ Skjaeraasen, O. 20.3-cm SCT 77x Mail(grl) 1993 04 09.04 11.5 mv TA Bengtsson, H. 15-cm refl. Nova(gmh) 1993 04 09.101 11.46 mv TB Bryan, J. 25cm 120x Mail 1993 04 09.14 11.53 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 09.163 11.7 mv AC Benge USA-TX Mail(rw) 1993 04 09.190 11.8 mv TA Hornby, P. Nova(gmh) 1993 04 09.20 11.5 mv TB Dillon, W. G. IAUC 5757 1993 04 09.21 12.0 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 09.25 11.4 mv Royer, R. IAUC 5757 1993 04 09.28 11.46 V HC McDavid, D. 40-cm + CCD Mail 1993 04 09.28 11.93 B HC McDavid, D. 40-cm + CCD Mail 1993 04 09.443 11.6: mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 09.469 11.5 mv TB Sekino, Y. 28cm refl. Mail(kat) 1993 04 09.479 11.4 mv TB Makiguchi, N. 25cm refl. Mail(kat) 1993 04 09.481 11.5 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 09.496 11.4 C TB Kushida, Y. 40cm refl. CCD Mail(kat) 1993 04 09.503 11.5 mv TB Takahashi, S. 20cm refl. Mail(kat) 1993 04 09.507 11.7 mv TB Funada, M. 13cm refl. 151x Mail(kat) 1993 04 09.507 11.7 mv TB Kiyota, S. 20cm refl. Mail(kat) 1993 04 09.523 11.7 mv TB Iida, M. Mail(kat) 1993 04 09.541 11.46 V Kato, T. 60cm, CCD IAUC 5760 1993 04 09.559 11.45 C TB Fujita, Y. 60cm, CCD no filter Mail(kat) 1993 04 09.569 11.8 mv TB Shirota, E. 20cm refl. Mail(kat) 1993 04 09.61 11.72 U HC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 09.61 11.99 B HC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 09.61 11.43 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 09.61 10.96 R JHC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 09.61 10.71 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 09.626 11.3 mv TB Watanabe, T. 10cm refl. Mail(kat) 1993 04 09.635 11.6 mv TB Watanabe, Y. 20cm SCT Mail(kat) 1993 04 09.659 11.52 V Okyudo, M and 60cm refl. + CCD IAUC 5760 1993 04 09.659 &1 Ishida, T. Nishi-Harima Obs. 1993 04 09.686 11.6 mv TB Shioi, H. 20cm refl. Mail(kat) 1993 04 09.800 11.5 mv TA Tanti, T. Mail(gmh) 1993 04 09.817 11.7 mv AC Moeller, M. 15.0-cm refl. Mail(jah) 1993 04 09.83 12.1 mv T1 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 09.830 10.9 mv TA Aldrich, T. Nova(gmh) 1993 04 09.833 11.3 mv TB Bremseth, P.-J. 20.3-cm SCT 111x Mail(grl) 1993 04 09.835 11.5 mv TA Westlund, M. Nova(gmh) 1993 04 09.840 11.6 mv TA Andersson Mail(gmh) 1993 04 09.84 12.0 mv T1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 09.89 11.9 mv T1 Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 09.902 11.4 mv TA Midtskogen, O. 15.0-cm refl. Mail(grl) 1993 04 09.906 11.7 mv Smith, P. Mail(gmh) 1993 04 09.920 10.9 mv TA Gill, M. Mail(gmh) 1993 04 09.93 11.6 mv TA Ekloef, A. 11-cm refl. Mail(grl) 1993 04 09.938 11.5 mv Washington, C. Mail(gmh) 1993 04 09.941 11.9 mv TA Hurst, G. Nova(gmh) 1993 04 09.95 11.5 mv TA Andersson, K.-G. 15.5-cm refl. Mail(grl) 1993 04 09.962 11.4 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 10.060 11.6 mv TB Schmeer, P. 20cm SCT Mail 1993 04 10.083 11.4 mv TA Girard, P. Mail(gmh) 1993 04 10.093 11.4 mv TA Day, J. Nova(gmh) 1993 04 10.1 11.37 V Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 10.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 10.1 11.87 B Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 10.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 10.1 11.04 R *Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 10.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 10.1 10.93 I *Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 10.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 10.108 11.40 mv TB Bryan, J. 25cm 80x Mail 1993 04 10.115 11.7 mv AC Benge USA-TX Mail(rw) 1993 04 10.120 11.2 mv TA Panther, R. Mail(gmh) 1993 04 10.13 11.32 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 10.14 11.2 mv TB Levy Mail(rw) 1993 04 10.14 11.81 B Mutel, R. and Univ. of Iowa IAUC 5760 1993 04 10.14 &1 Sauerbrei, P. 1993 04 10.14 11.42 V Mutel, R. and Univ. of Iowa IAUC 5760 1993 04 10.14 &1 Sauerbrei, P. 1993 04 10.14 10.81 R J Mutel, R. and Univ. of Iowa IAUC 5760 1993 04 10.14 &1 Sauerbrei, P. 1993 04 10.14 10.70 I J Mutel, R. and Univ. of Iowa IAUC 5760 1993 04 10.14 &1 Sauerbrei, P. 1993 04 10.15 11.6 mv T1 Flynn, E. W. 25-cm refl. Mail(grl) 1993 04 10.15 &1 St. Louis, MO, USA 1993 04 10.18 11.3 mv TB Dillon, W. G. 28cm SCT Mail 1993 04 10.18 11.7 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 10.21 11.69 U Richmond Berkeley, bad weather News 1993 04 10.21 11.86 B Richmond Berkeley, bad weather News 1993 04 10.21 11.37 V Richmond Berkeley, bad weather News 1993 04 10.21 11.04 R C Richmond Berkeley, bad weather News 1993 04 10.21 10.90 I C Richmond Berkeley, bad weather News 1993 04 10.23 11.79 U Richmond Berkeley, bad weather News 1993 04 10.23 11.85 B Richmond Berkeley, bad weather News 1993 04 10.23 11.35 V Richmond Berkeley, bad weather News 1993 04 10.23 10.95 R C Richmond Berkeley, bad weather News 1993 04 10.23 10.88 I C Richmond Berkeley, bad weather News 1993 04 10.28 11.34 V HC McDavid, D. 40-cm + CCD Mail 1993 04 10.28 11.80 B HC McDavid, D. 40-cm + CCD Mail 1993 04 10.300 11.6 mv TA Hornby, P. Mail(gmh) 1993 04 10.40 11.82 U Richmond Berkeley, bad weather News 1993 04 10.40 11.83 B Richmond Berkeley, bad weather News 1993 04 10.40 11.33 V Richmond Berkeley, bad weather News 1993 04 10.40 10.97 R C Richmond Berkeley, bad weather News 1993 04 10.40 10.87 I C Richmond Berkeley, bad weather News 1993 04 10.422 11.4 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 10.437 11.1 mv TB Kiyota, S. 25cm SCT Mail(kat) 1993 04 10.459 11.2 mv TB Sekino, Y. 28cm refl. Mail(kat) 1993 04 10.467 11.6 mv TB Funada, M. 13cm refl. 151x Mail(kat) 1993 04 10.471 11.33 V Kato, Taichi 60cm, CCD Mail(kat) 1993 04 10.476 11.6 mv TB Makiguchi, N. 25cm refl. Mail(kat) 1993 04 10.493 10.91 I C Kato, Taichi 60cm, CCD Mail(kat) 1993 04 10.521 11.3 mv TB Hirosawa, K. 21cm refl. Mail(kat) 1993 04 10.529 11.78 B Kato, Taichi 60cm, CCD Mail(kat) 1993 04 10.530 11.83 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 10.530 11.31 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 10.530 10.98 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 10.530 10.85 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 10.554 11.33 C TB Fujita, Y. 60cm, CCD no filter Mail(kat) 1993 04 10.557 11.5 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 10.58 11.64 U HC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 10.58 11.76 B HC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 10.58 11.32 V HC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 10.58 10.85 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 10.58 10.62 I JHC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 10.588 11.46 V Okyudo, M and 60cm refl. + CCD IAUC 5760 1993 04 10.588 &1 Ishida, T. Nishi-Harima Obs. 1993 04 10.591 11.4 mv TB Ohkura, N. 35.5cm SCT 98x Mail(kat) 1993 04 10.608 11.46 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 10.608 &1 Ishida, T. Nishi-Harima Obs. 1993 04 10.626 11.5 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 10.645 11.4 C TB Kushida, Y. 40cm refl. CCD Mail(kat) 1993 04 10.780 11.7 mv TB Yamada, M. 35cm SCT Mail(kat) 1993 04 10.782 11.66 U Lyuty, V. M. Ukraine News 1993 04 10.782 11.79 B Lyuty, V. M. Ukraine News 1993 04 10.782 11.31 V Lyuty, V. M. Ukraine News 1993 04 10.808 11.4 mv TB Schmeer, P. 20cm SCT Mail 1993 04 10.837 11.1 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 10.842 11.2 mv TB Bremseth, P.-J. 20.3-cm SCT 111x Mail(grl) 1993 04 10.845 11.5 mv TA Midtskogen, O. 31.6-cm refl. 62x Mail(grl) 1993 04 10.85 12.1 mv T1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 10.86 11.3 mv TA Andersson, K.-G. 25.5-cm refl. Mail(grl) 1993 04 10.86 11.72 U Shakhovskoy et al. Crimea 1.25-m News 1993 04 10.86 11.84 B Shakhovskoy et al. Crimea 1.25-m News 1993 04 10.86 11.30 V Shakhovskoy et al. Crimea 1.25-m News 1993 04 10.86 10.85 R J Shakhovskoy et al. Crimea 1.25-m News 1993 04 10.86 10.66 I J Shakhovskoy et al. Crimea 1.25-m News 1993 04 10.87 12.1 C T1 Rodriguez, D. 20-cm f/4 refl. + CCD Mail(grl) 1993 04 10.89 12.0 mv T1 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 10.89 12.0 mv T1 Pujol, F. 31-cm f/3.9 refl. Mail(grl) 1993 04 10.899 10.9 mv TA Gill, M. Mail(gmh) 1993 04 10.899 11.6 mv TA Ewen-Smith, B. Mail(gmh) 1993 04 10.91 11.08 V Hanzl, D. N. Copernicus Planet. IAUC 5760 1993 04 10.91 11.61 B Hanzl, D. N. Copernicus Planet. IAUC 5760 1993 04 10.91 11.23 V Morrison et al. LaPalma IAUC 5767 1993 04 10.92 11.26 V Mikolajewski, M. N. Copernicus Planet. IAUC 5760 1993 04 10.92 &1 Ruminski, K. 1993 04 10.92 11.72 B Mikolajewski, M. N. Copernicus Planet. IAUC 5760 1993 04 10.92 &1 Ruminski, K. 1993 04 10.92 11.55 U Mikolajewski, M. N. Copernicus Planet. IAUC 5760 1993 04 10.92 &1 Ruminski, K. 1993 04 10.92 10.75 R J Mikolajewski, M. N. Copernicus Planet. IAUC 5760 1993 04 10.92 &1 Ruminski, K. 1993 04 10.92 10.90 I J Mikolajewski, M. N. Copernicus Planet. IAUC 5760 1993 04 10.92 &1 Ruminski, K. 1993 04 10.920 11.4 mv TA+ Granslo, B. H. 20.3-cm refl. 135x Mail(grl) 1993 04 10.922 11.3 mv TA Andersen, O. I. 20.3-cm refl. 135x Mail(grl) 1993 04 10.96 11.6 mv Pietz, J. Mail(jah) 1993 04 11.09 11.1 mv TB Buta, R. 25cm refr. Mail(gav) 1993 04 11.095 11.43 mv TB Bryan, J. 25cm 80x Mail 1993 04 11.10 11.24 C HC Ferguson, D. C., 10-cm refr.+LYNXX CCD Mail(grl) 1993 04 11.10 &1 Morton, T. L., Baldwin Wallace Coll. 1993 04 11.10 &2 and Snyder, D. B. Berea, Ohio 1993 04 11.13 11.23 V HC McDavid, D. 40-cm + CCD Mail 1993 04 11.13 11.71 B HC McDavid, D. 40-cm + CCD Mail 1993 04 11.17 11.56 U Richmond Berkeley News 1993 04 11.17 11.72 B Richmond Berkeley News 1993 04 11.17 11.27 V Richmond Berkeley News 1993 04 11.17 10.94 R C Richmond Berkeley News 1993 04 11.17 10.79 I C Richmond Berkeley News 1993 04 11.17 11.7 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 11.21 10.9 mv TB Dillon B. 25cm SCT News 1993 04 11.21 11.24 V Richmond Berkeley News 1993 04 11.21 10.82 R C Richmond Berkeley News 1993 04 11.21 10.78 I C Richmond Berkeley News 1993 04 11.22 11.57 U Richmond Berkeley News 1993 04 11.22 11.71 B Richmond Berkeley News 1993 04 11.22 11.26 V Richmond Berkeley News 1993 04 11.22 10.93 R C Richmond Berkeley News 1993 04 11.22 10.78 I C Richmond Berkeley News 1993 04 11.260 11.6 mv TA Hornby, P. Mail(gmh) 1993 04 11.273 11.75 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 11.273 11.25 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 11.273 10.88 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 11.273 10.79 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 11.29 11.22 V HC McDavid, D. 40-cm + CCD Mail 1993 04 11.29 11.68 B HC McDavid, D. 40-cm + CCD Mail 1993 04 11.472 11.7 mv TB Yamaoka, H. 31cm refl. Mail(kat) 1993 04 11.59 11.48 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 11.59 11.70 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 11.59 11.21 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 11.59 10.69 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 11.59 10.53 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 11.591 11.1 C TB Kushida, Y. 40cm refl. CCD Mail(kat) 1993 04 11.659 11.30 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 11.659 &1 Ishida, T. Nishi-Harima Obs. 1993 04 11.837 10.9 mv TB Bremseth, P.-J. 20.3-cm SCT 111x Mail(grl) 1993 04 11.881 10.9 mv AC Moeller, M. 15.0-cm refl. Mail(jah) 1993 04 11.883 11.1 mv TA+ Granslo, B. H. 15.2-cm refl. 74x Mail(grl) 1993 04 11.885 11.4 mv TA Andersen, O. I. 15.2-cm refl. 74x Mail(grl) 1993 04 11.89 11.6 mv T1 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 11.89 11.6 mv T1 Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 11.894 11.60 U Lyuty, V. M. Ukraine News 1993 04 11.894 11.70 B Lyuty, V. M. Ukraine News 1993 04 11.894 11.21 V Lyuty, V. M. Ukraine News 1993 04 11.896 10.9 mv TA Gill, M. Mail(gmh) 1993 04 11.903 11.0 mv TA Midtskogen, O. 31.6-cm refl. 62x Mail(grl) 1993 04 11.91 11.3 mv TA Andersson, K.-G. 15.5-cm refl. Mail(grl) 1993 04 11.94 11.4 mv TA Andersson, K.-G. 15.5-cm refl. Mail(grl) 1993 04 11.947 11.8 mv TA Hurst, G. Nova(gmh) 1993 04 11.980 11.3 mv TA Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 12.00 11.74 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5760 1993 04 12.00 10.87 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5760 1993 04 12.00 10.9 mv TA Smedstuen, O. 25.4-cm refl. 108x Mail(grl) 1993 04 12.00 &1 Haagaar Obs, Norway 1993 04 12.00 11.2 mv TA Skartlien, R. 25.4-cm refl. 108x Mail(grl) 1993 04 12.12 11.5 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 12.129 11.3 mv TA Worraker, W. Mail(gmh) 1993 04 12.129 11.6 mv AC Benge USA-TX Mail(rw) 1993 04 12.132 11.36 mv TB Bryan, J. 25cm 80x Mail 1993 04 12.160 10.7 mv TA Panther, R. Mail(gmh) 1993 04 12.21 11.46 U Richmond Berkeley News 1993 04 12.21 11.61 B Richmond Berkeley News 1993 04 12.21 11.14 V Richmond Berkeley News 1993 04 12.21 10.83 R C Richmond Berkeley News 1993 04 12.21 10.70 I C Richmond Berkeley News 1993 04 12.22 11.18 V Zurek. D. R. Univ. Victoria IAUC 5761 1993 04 12.22 &1 et al. 50cm refl. CCD 1993 04 12.22 11.71 B Zurek. D. R. Univ. Victoria IAUC 5761 1993 04 12.22 &1 et al. 50cm refl. CCD 1993 04 12.22 10.83 R C Zurek. D. R. Univ. Victoria IAUC 5761 1993 04 12.22 &1 et al. 50cm refl. CCD 1993 04 12.22 10.70 I C Zurek. D. R. Univ. Victoria IAUC 5761 1993 04 12.22 &1 et al. 50cm refl. CCD 1993 04 12.429 11.2 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 12.476 11.11 V Kato, Taichi 60cm, CCD IAUC 5760 1993 04 12.495 11.15 C TB Fujita, Y. 60cm, CCD nofilter Mail(kat) 1993 04 12.495 &1 Kuma Kogen Obs. 1993 04 12.499 10.71 I C Kato, Taichi 60cm, CCD IAUC 5760 1993 04 12.508 11.7 mv TB Iida, M. Mail(kat) 1993 04 12.529 11.4 mv TB Yamada, M. Mail(kat) 1993 04 12.537 11.57 B Kato, Taichi 60cm, CCD IAUC 5760 1993 04 12.557 11.24 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 12.557 &1 Ishida, T. Nishi-Harima Obs. 1993 04 12.590 11.0 p TB Ohno, I. 20cm refl. f/8 Mail(kat) 1993 04 12.590 &1 Fuji Color G800 1993 04 12.594 11.2 mv TB Hirosawa, K. 21cm refl. Mail(kat) 1993 04 12.639 11.59 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 12.639 11.12 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 12.639 10.77 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 12.639 10.65 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 12.64 11.41 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 12.64 11.62 B HC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 12.64 11.11 V HC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 12.64 10.61 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 12.64 10.45 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 12.700 11.1 C TB Kushida, Y. 40cm refl. CCD Mail(kat) 1993 04 12.833 10.6 mv AC Moeller, M. 15.0-cm refl. Mail(jah) 1993 04 12.85 10.5 mv T1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 12.851 10.5 mv TB Bremseth, P.-J. 20.3-cm SCT 80x Mail(grl) 1993 04 12.859 11.0 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 12.86 11.1 mv TA Bengtsson, H. 15-cm refl. Mail(grl) 1993 04 12.865 11.4 mv TA Westlund, M. 20.3-cm SCT Mail(grl) 1993 04 12.884 10.7 mv TA+ Midtskogen, O. 31.6-cm refl. 62x Mail(grl) 1993 04 12.885 11.1 mv TA Lancashire, J. Mail(gmh) 1993 04 12.903 10.8 mv TA Worraker, W. Mail(gmh) 1993 04 12.910 11.2 mv TB Schmeer, P. 20cm SCT Mail 1993 04 12.918 11.3 mv TA Ewen-Smith Mail(gmh) 1993 04 12.934 11.4 mv TA Westlund, M. 20.3-cm SCT Mail(grl) 1993 04 12.938 11.4 mv TA Shanklin, J. Mail(gmh) 1993 04 13.03 11.2 mv TA Bengtsson, H. 15-cm refl. Mail(grl) 1993 04 13.042 10.6 mv TB Kratz, D. 20cm f/3.5 79x Mail 1993 04 13.1 11.07 V Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 13.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 13.1 11.58 B Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 13.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 13.1 10.75 R *Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 13.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 13.1 10.64 I *Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 13.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 13.131 11.2 mv TB Schmeer, P. 20cm SCT Mail 1993 04 13.18 11.01 V Zurek. D. R. Univ. Victoria IAUC 5761 1993 04 13.18 &1 et al. 50cm refl. CCD 1993 04 13.18 11.50 B Zurek. D. R. Univ. Victoria IAUC 5761 1993 04 13.18 &1 et al. 50cm refl. CCD 1993 04 13.18 10.66 R C Zurek. D. R. Univ. Victoria IAUC 5761 1993 04 13.18 &1 et al. 50cm refl. CCD 1993 04 13.18 10.66 I C Zurek. D. R. Univ. Victoria IAUC 5761 1993 04 13.18 &1 et al. 50cm refl. CCD 1993 04 13.2 11.36 U Richmond, M. 51-cm News 1993 04 13.2 &1 Raw measurements 1993 04 13.2 11.53 B Richmond, M. 51-cm News 1993 04 13.2 11.05 V Richmond, M. 51-cm News 1993 04 13.2 10.74 R Richmond, M. 51-cm News 1993 04 13.2 10.63 I Richmond, M. 51-cm News 1993 04 13.2 11.57 U Richmond, M. 76-cm News 1993 04 13.2 &1 Raw measurements 1993 04 13.2 11.53 B Richmond, M. 76-cm News 1993 04 13.2 11.04 V Richmond, M. 76-cm News 1993 04 13.2 10.65 R Richmond, M. 76-cm News 1993 04 13.2 10.61 I Richmond, M. 76-cm News 1993 04 13.2 11.0: mv TB+ Shaeffer, R. 32-cm refl. News 1993 04 13.3 11.53 B Richmond, M. 76-cm News 1993 04 13.3 11.05 V Richmond, M. 76-cm News 1993 04 13.3 10.76 R Richmond, M. 76-cm News 1993 04 13.3 10.62 I Richmond, M. 76-cm News 1993 04 13.3 11.0: mv TB+ Shaeffer, R. 32-cm refl. News 1993 04 13.469 10.9 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 13.577 11.17 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 13.577 &1 Ishida, T. Nishi-Harima Obs. 1993 04 13.598 11.0 C TB Kushida, Y. 40cm CCD no filter Mail(kat) 1993 04 13.61 11.33 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 13.61 11.51 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 13.61 11.06 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 13.61 10.58 R JHC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 13.61 10.37 I JHC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 13.626 11.1 mv TB Watanabe, T. 10cm refl. 80x Mail(kat) 1993 04 13.81 11.48 U Shakhovskoy et al. Crimea 1.25-m News 1993 04 13.81 11.58 B Shakhovskoy et al. Crimea 1.25-m News 1993 04 13.81 11.02 V Shakhovskoy et al. Crimea 1.25-m News 1993 04 13.81 10.60 R J Shakhovskoy et al. Crimea 1.25-m News 1993 04 13.81 10.45 I J Shakhovskoy et al. Crimea 1.25-m News 1993 04 13.84 11.07 V Mikolajewski, M. N. Copernicus Uni, IAUC 5765 1993 04 13.84 &1 et al. Torun 1993 04 13.84 11.63 B Mikolajewski, M. N. Copernicus Uni, IAUC 5765 1993 04 13.84 &1 et al. Torun 1993 04 13.84 10.57 R J Mikolajewski, M. N. Copernicus Uni, IAUC 5765 1993 04 13.84 &1 et al. Torun 1993 04 13.84 10.65 I J Mikolajewski, M. N. Copernicus Uni, IAUC 5765 1993 04 13.84 &1 et al. Torun 1993 04 13.840 10.5 mv TB Bremseth, P.-J. 20.3-cm SCT 80x Mail(grl) 1993 04 13.842 11.1 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 13.848 11.1 mv TA Westlund, M. 20.3-cm SCT Mail(grl) 1993 04 13.87 10.5 mv T1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 13.88 11.3 mv TA Andersson, K.-G. 15-cm refl. Mail(grl) 1993 04 13.88 10.6 mv T1 Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 13.892 10.6 mv TA+ Midtskogen, O. 31.6-cm refl. 62x Mail(grl) 1993 04 13.892 10.8 mv TA+ Skjaeraasen, O. 20.3-cm SCT 77x Mail(grl) 1993 04 13.91 10.6 mv T1 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 13.917 11.3 mv TA Andersson, K.-G. 15-cm refl. Mail(gmh) 1993 04 13.92 10.8 mv Pietz, J. Mail(jah) 1993 04 13.937 11.3 mv TA Westlund, M. 20.3-cm SCT Mail(grl) 1993 04 13.958 11.3 mv TA Andersson, K.-G. 15-cm refl. Mail(gmh) 1993 04 13.970 10.9 mv TA Ewn-Smith, B. Mail(gmh) 1993 04 13.994 11.1 mv TB Schmeer, P. 20cm SCT Mail 1993 04 14.00 11.59 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5765 1993 04 14.00 10.68 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5765 1993 04 14.01 10.9 mv Schlyter, P. 10-cm refl. Mail(ben) 1993 04 14.031 10.6 mv TB Kratz, D. 20cm f/3.5 79x Mail 1993 04 14.05 11.1 mv TB Wijers News 1993 04 14.05 11.2 mv TB Richmond News 1993 04 14.10 11.0 mv TB Kratz Mail(rw) 1993 04 14.10 10.96 C HC Ferguson, D. C., 10-cm refr.+LYNXX CCD Mail(grl) 1993 04 14.10 &1 Morton, T. L., Baldwin Wallace Coll. 1993 04 14.10 &2 and Snyder, D. B. Berea, Ohio 1993 04 14.13 11.0 mv TB Beauchamp Mail(rw) 1993 04 14.16 11.41 U Schulman Mail(rw) 1993 04 14.16 11.44 B Schulman Mail(rw) 1993 04 14.16 11.00 V Schulman Mail(rw) 1993 04 14.16 10.66 R Schulman Mail(rw) 1993 04 14.16 10.54 I Schulman Mail(rw) 1993 04 14.167 10.7 mv TB+ Sheaffer, R. 31cm refl. News 1993 04 14.17 10.22 J Romanishin IAUC 5773 1993 04 14.17 10.15 H Romanishin IAUC 5773 1993 04 14.17 9.91 K Romanishin IAUC 5773 1993 04 14.2 11.34 U Richmond, M. 51-cm News 1993 04 14.2 &1 Raw measurements 1993 04 14.2 11.46 B Richmond, M. 51-cm News 1993 04 14.2 10.98 V Richmond, M. 51-cm News 1993 04 14.2 10.70 R Richmond, M. 51-cm News 1993 04 14.2 10.57 I Richmond, M. 51-cm News 1993 04 14.2 11.43 B Richmond, M. 76-cm News 1993 04 14.2 &1 Raw measurements 1993 04 14.2 10.98 V Richmond, M. 76-cm News 1993 04 14.2 10.56 R Richmond, M. 76-cm News 1993 04 14.2 10.54 I Richmond, M. 76-cm News 1993 04 14.210 11.6 mv TA Hornby, P. Mail(gmh) 1993 04 14.3 11.52 U Richmond, M. 76-cm News 1993 04 14.3 &1 Raw measurements 1993 04 14.3 11.46 B Richmond, M. 76-cm News 1993 04 14.3 11.00 V Richmond, M. 76-cm News 1993 04 14.3 10.60 R Richmond, M. 76-cm News 1993 04 14.3 10.55 I Richmond, M. 76-cm News 1993 04 14.437 10.8 mv TB Makiguchi, N. 25-cm refl. Mail(kat) 1993 04 14.444 11.4: mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 14.446 10.99 C TB Fujita, Y. 60cm CCD no filter Mail(kat) 1993 04 14.446 &1 Kuma Kogen Obs. 1993 04 14.457 11.0 C TB Kushida, Y. 40cm CCD no filter Mail(kat) 1993 04 14.476 11.4 mv TB Iida, M. Mail(kat) 1993 04 14.523 11.2: mv TB Yamada, M. 35.5cm SCT Mail(kat) 1993 04 14.546 11.0 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 14.551 11.47 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 14.551 10.97 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 14.551 10.63 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 14.551 10.53 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 14.583 11.1 mv TB Ohkura, N. 35.5cm SCT 98x Mail(kat) 1993 04 14.599 11.1 mv TB Funada, M. 13cm refl. 151x Mail(kat) 1993 04 14.62 11.31 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 14.62 11.46 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 14.62 10.96 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 14.62 10.45 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 14.62 10.28 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 14.620 10.9 mv TB Shioi, H. 20cm refl. Mail(kat) 1993 04 14.628 11.03 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 14.628 &1 Ishida, T. Nishi-Harima Obs. 1993 04 14.630 11.2 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 14.653 10.9 mv TB Shioi, H. 20cm refl. Mail(kat) 1993 04 14.750 10.9 mv TB Kiyota, S. 20cm refl. Mail(kat) 1993 04 14.82 10.8 mv Pietz, J. Mail(jah) 1993 04 14.845 10.5 mv TB Bremseth, P.-J. 20.3-cm SCT 80x Mail(grl) 1993 04 14.846 11.2 mv TB Schmeer, P. 20cm SCT Mail 1993 04 14.847 11.0 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 14.864 10.9 mv TA Day, J. Mail(gmh) 1993 04 14.87 10.6 mv T1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 14.88 10.5 C T1 Rodriguez, D. 20-cm f/4 refl.+ CCD Mail(grl) 1993 04 14.883 10.6 mv TA Poyner, G. 40-cm refl. Mail 1993 04 14.89 10.4 mv Garcia, F. 25-cm refl. Mail(grl) 1993 04 14.89 10.88 V Hanzl, N. N.Copernicus Obs. IAUC 5763 1993 04 14.89 11.44 B Hanzl, N. N.Copernicus Obs. IAUC 5763 1993 04 14.894 10.7 mv TA Worraker, W. Mail(gmh) 1993 04 14.899 10.6 mv TA Gill, M. Mail(gmh) 1993 04 14.899 11.7 mv TA Rowlands, J. Mail(gmh) 1993 04 14.90 11.4 mv TA Ekloef, A. 11-cm refl. Mail(ben) 1993 04 14.904 10.7 mv TA+ Midtskogen, O. 31.6-cm refl. 62x Mail(grl) 1993 04 14.91 10.82 V Kulesza, B. N.Copernicus Obs. IAUC 5765 1993 04 14.91 11.37 B Kulesza, B. N.Copernicus Obs. IAUC 5763 1993 04 14.91 &1 revised IAUC 5765 1993 04 14.93 10.94 V Ruminski, K. and N.Copernicus Obs. IAUC 5765 1993 04 14.93 &1 Staniewski 1993 04 14.93 11.45 B Ruminski, K. and N.Copernicus Obs. IAUC 5765 1993 04 14.93 &1 Staniewski 1993 04 14.93 11.39 U Ruminski, K. and N.Copernicus Obs. IAUC 5765 1993 04 14.93 &1 Staniewski 1993 04 14.93 10.46 R J Ruminski, K. and N.Copernicus Obs. IAUC 5765 1993 04 14.93 &1 Staniewski 1993 04 14.93 10.41 I J Ruminski, K. and N.Copernicus Obs. IAUC 5765 1993 04 14.93 &1 Staniewski 1993 04 14.934 11.5 mv TA Hurst, G. Mail(gmh) 1993 04 14.949 9.99 J Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 14.949 &1 Kidger, M. Gonergrat, poor sky 1993 04 14.949 9.92 H Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 14.949 &1 Kidger, M. Gonergrat, poor sky 1993 04 14.949 9.71 K Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 14.949 &1 Kidger, M. Gonergrat, poor sky 1993 04 15.006 11.2 mv TA+ Granslo, B. H. 20.3-cm SCT 80x Mail(grl) 1993 04 15.08 11.54 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5765 1993 04 15.08 10.61 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5765 1993 04 15.101 11.2 mv TB Bryan, J. 25cm 80x Mail 1993 04 15.15 10.9 mv TB Beauchamp Mail(rw) 1993 04 15.15 10.18 J Romanishin IAUC 5773 1993 04 15.15 10.15 H Romanishin IAUC 5773 1993 04 15.15 9.87 K Romanishin IAUC 5773 1993 04 15.15 11.34 U Schulman Mail(rw) 1993 04 15.15 11.44 B Schulman Mail(rw) 1993 04 15.15 10.91 V Schulman Mail(rw) 1993 04 15.15 10.60 R Schulman Mail(rw) 1993 04 15.15 10.50 I Schulman Mail(rw) 1993 04 15.18 10.6 mv TB Dillon, B. 28cm SCT News 1993 04 15.18 10.91 V HC McDavid, D. 40-cm + CCD Mail 1993 04 15.18 11.39 B HC McDavid, D. 40-cm + CCD Mail 1993 04 15.444 10.5 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 15.463 11.44 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 15.463 10.93 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 15.463 10.58 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 15.463 10.47 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 15.469 11.1 mv TB Sugai, H. 30-cm refl. Mail(kat) 1993 04 15.484 11.0 C TB Kushida, Y. 40cm CCD no filter Mail(kat) 1993 04 15.494 11.3 mv TB Iida, M. Mail(kat) 1993 04 15.499 10.9 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 15.531 10.9 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 15.59 11.33 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 15.59 11.42 B HC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 15.59 10.91 V HC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 15.59 10.43 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 15.59 10.25 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 15.603 10.4 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 15.642 10.8 p TB Ohno, I. 20cm refl. f/8 Mail(kat) 1993 04 15.642 &1 Fuji Color G400 1993 04 15.810 10.6 mv TA Tanti, T. Mail(gmh) 1993 04 15.83 10.6 mv AC Moeller, M. 15.0-cm refl. Mail(jah) 1993 04 15.833 10.5 mv TB Bremseth, P.-J. 20.3-cm SCT 80x Mail(grl) 1993 04 15.86 11.0 mv TA Bengtsson, H. 15-cm refl. Mail(grl) 1993 04 15.864 10.8 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 15.864 10.12 J Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 15.864 &1 Kidger, M. Gonergrat 1993 04 15.865 10.9 mv TA Hurst, G. Mail(gmh) 1993 04 15.868 11.2 mv TB Schmeer, P. 20cm SCT Mail 1993 04 15.87 10.1 mv T1 Ripero, J. 33.5-cm f/5 refl. Mail(grl) 1993 04 15.87 10.87 V Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 15.87 11.41 B Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 15.87 11.40 U Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 15.87 10.36 R J Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 15.87 10.47 I J Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 15.870 10.6 mv TA McKim, R. Mail(gmh) 1993 04 15.88 10.9 mv TA Andersson, K.-G. 15-cm refl. Mail(grl) 1993 04 15.88 10.1 mv T1 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 15.880 11.0 mv TA Lancashire, J. Mail(gmh) 1993 04 15.90 10.9 mv TA Andersson, K.-G. 15-cm refl. Mail(grl) 1993 04 15.91 10.7 mv T1 Pujol, F. 31-cm rf/5 efl. Mail(grl) 1993 04 15.917 10.9 mv TA Andersson, K. Mail(gmh) 1993 04 15.924 11.1 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 15.937 10.26 J Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 15.937 &1 Kidger, M. Gonergrat 1993 04 15.937 10.07 H Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 15.937 &1 Kidger, M. Gonergrat 1993 04 15.937 9.83 K Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 15.937 &1 Kidger, M. Gonergrat 1993 04 15.938 10.9 mv TA Andersson, K. Mail(gmh) 1993 04 15.940 10.6 mv TA Shanklin, J. Mail(gmh) 1993 04 15.964 10.13 J Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 15.964 &1 Kidger, M. Gonergrat 1993 04 15.964 10.04 H Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 15.964 &1 Kidger, M. Gonergrat 1993 04 15.964 9.78 K Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 15.964 &1 Kidger, M. Gonergrat 1993 04 15.98 11.0 mv TA Bengtsson, H. 15-cm refl. Mail(grl) 1993 04 15.99 10.7 mv Pietz, J. Mail(jah) 1993 04 16.00 11.51 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5765 1993 04 16.00 10.58 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5765 1993 04 16.017 11.39 B Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 16.017 10.85 V Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 16.101 11.1 mv TB Bryan, J. 25cm 80x Mail 1993 04 16.12 11.1 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 16.127 11.6 mv AC Benge USA-TX Mail(rw) 1993 04 16.14 11.00 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 16.14 10.13 J Romanishin IAUC 5773 1993 04 16.14 10.09 H Romanishin IAUC 5773 1993 04 16.14 9.89 K Romanishin IAUC 5773 1993 04 16.15 11.35 U Tweedy, R. et al. KPNO CCD IAUC 5769 1993 04 16.15 11.40 B Tweedy, R. et al. KPNO CCD IAUC 5769 1993 04 16.15 10.88 V Tweedy, R. et al. KPNO CCD IAUC 5769 1993 04 16.15 10.55 R J Tweedy, R. et al. KPNO CCD IAUC 5769 1993 04 16.15 10.46 I J Tweedy, R. et al. KPNO CCD IAUC 5769 1993 04 16.181 10.9 mv TB Sheaffer, R. 32cm refl. News 1993 04 16.2 11.39 B Richmond News 1993 04 16.2 10.85 V Richmond News 1993 04 16.2 10.46 R C Richmond News 1993 04 16.2 10.43 I C Richmond News 1993 04 16.2 11.21 U Richmond News 1993 04 16.2 11.39 B Richmond News 1993 04 16.2 10.88 V Richmond News 1993 04 16.2 10.58 R C Richmond News 1993 04 16.2 10.45 I C Richmond News 1993 04 16.20 11.34 U Schulman Mail(rw) 1993 04 16.20 11.38 B Schulman Mail(rw) 1993 04 16.20 10.88 V Schulman Mail(rw) 1993 04 16.20 10.50 R Schulman Mail(rw) 1993 04 16.20 10.44 I Schulman Mail(rw) 1993 04 16.30 11.39 B Richmond News 1993 04 16.30 10.90 V Richmond News 1993 04 16.30 10.49 R C Richmond News 1993 04 16.30 10.44 I C Richmond News 1993 04 16.31 10.85 V HC McDavid, D. 40-cm + CCD Mail 1993 04 16.31 11.38 B HC McDavid, D. 40-cm + CCD Mail 1993 04 16.441 10.6 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 16.475 11.42 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 16.475 10.88 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 16.475 10.54 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 16.475 10.44 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 16.476 10.9 C TB Kushida, Y. 40cm CCD no filter Mail(kat) 1993 04 15.505 10.8 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 16.524 10.9 mv TB Funada, M. 13cm refl. 88x Mail(kat) 1993 04 16.55 11.29 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 16.55 11.43 B HC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 16.55 10.84 V HC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 16.55 10.39 R JHC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 16.55 10.21 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 16.548 10.8 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 16.601 10.88 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 16.601 &1 Ishida, T. Nishi-Harima Obs. 1993 04 16.82 10.6 mv Pietz, J. Mail(jah) 1993 04 16.86 10.0 mv T1 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 16.86 11.54 U Shakhovskoy et al. Crimea 1.25-m News 1993 04 16.86 11.61 B Shakhovskoy et al. Crimea 1.25-m News 1993 04 16.86 10.95 V Shakhovskoy et al. Crimea 1.25-m News 1993 04 16.86 10.48 R J Shakhovskoy et al. Crimea 1.25-m News 1993 04 16.86 10.37 I J Shakhovskoy et al. Crimea 1.25-m News 1993 04 16.87 10.6 mv T1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 16.88 10.3 mv T1 Carjaval, J. 31-cm f/4.5 refl. Mail(grl) 1993 04 16.88 10.80 V Hanzl, D. N. Copernicus Obs. IAUC 5767 1993 04 16.88 11.39 B Hanzl, D. N. Copernicus Obs. IAUC 5767 1993 04 16.89 10.3 C T1 Rodriguez, D. 20-cm f/4 refl.+ CCD Mail(grl) 1993 04 16.89 10.86 V Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 16.89 11.43 B Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 16.89 11.32 U Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 16.89 10.37 R J Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 16.89 10.44 I J Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 16.90 10.88 V Morrison et al. IAUC 5767 1993 04 16.91 10.4 mv T1 Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 16.910 10.6 mv TA Tanti, T. Mail(gmh) 1993 04 16.96 10.8 mv Pietz, J. Mail(jah) 1993 04 16.976 11.42 B Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 16.976 10.88 V Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 17.00 11.52 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5765 1993 04 17.00 10.55 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5765 1993 04 17.044 11.1 mv TB Schmeer, P. 20.3-cm SCT 133x Mail 1993 04 17.09 10.90 C HC Ferguson, D. C., 10-cm refr.+LYNXX CCD Mail(grl) 1993 04 17.09 &1 Morton, T. L., Baldwin Wallace Coll. 1993 04 17.09 &2 and Snyder, D. B. Berea, Ohio 1993 04 17.1 10.85 V Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 17.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 17.1 11.41 B Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 17.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 17.1 10.41 I *Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 17.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 17.13 10.10 J Romanishin IAUC 5773 1993 04 17.13 10.07 H Romanishin IAUC 5773 1993 04 17.13 9.83 K Romanishin IAUC 5773 1993 04 17.15 10.97 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 17.16 10.9 mv T1 Flynn, E. M. 25-cm refl. Mail(grl) 1993 04 17.19 11.33 U Schulman Mail(rw) 1993 04 17.19 11.42 B Schulman Mail(rw) 1993 04 17.19 10.84 V Schulman Mail(rw) 1993 04 17.19 10.51 I Schulman Mail(rw) 1993 04 17.2 10.83 V Richmond News 1993 04 17.2 10.44 R C Richmond News 1993 04 17.2 10.40 I C Richmond News 1993 04 17.2 11.29 U Richmond News 1993 04 17.2 11.38 B Richmond News 1993 04 17.2 10.86 V Richmond News 1993 04 17.2 10.52 R C Richmond News 1993 04 17.2 10.45 I C Richmond News 1993 04 17.236 10.77 V HC Anderson, J. M. 40.6-cm refl. + PEP Mail(grl) 1993 04 17.236 &1 Univ. Northern Iowa 1993 04 17.236 &2 Hillside Observatory 1993 04 17.236 11.30 B HC Anderson, J. M. 40.6-cm refl. + PEP Mail(grl) 1993 04 17.236 &1 Univ. Northern Iowa 1993 04 17.236 &2 Hillside Observatory 1993 04 17.236 11.37 U HC Anderson, J. M. 40.6-cm refl. + PEP Mail(grl) 1993 04 17.236 &1 Univ. Northern Iowa 1993 04 17.236 &2 Hillside Observatory 1993 04 17.437 10.6 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 17.453 10.85 C TB Kushida, Y. 40cm CCD no filter Mail(kat) 1993 04 17.468 11.42 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 17.468 10.86 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 17.468 10.51 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 17.468 10.41 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 17.472 10.8 mv TB Sekino, Y. Mail(kat) 1993 04 17.476 10.9 mv TB Watanabe, S. (revised mag.) Mail(kat) 1993 04 17.479 10.9 mv TB Makiguchi, N. Mail(kat) 1993 04 17.500 11.0 mv TB Yamaoka, H. 20cm refl. Mail(kat) 1993 04 17.531 10.8 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 17.545 10.87 C TB Fujita, Y. 60cm CCD no filter Mail(kat) 1993 04 17.545 &1 Kuma Kogen Obs. 1993 04 17.55 11.34 U HC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 17.55 11.37 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 17.55 10.88 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 17.55 10.36 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 17.55 10.17 I JHC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 17.565 11.0 mv TB Ohkura, N. 35.5-cm SCT Mail(kat) 1993 04 17.612 11.00 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 17.612 &1 Ishida, T. Nishi-Harima Obs. 1993 04 17.620 10.7 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 17.742 10.8 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 17.830 10.6 mv TA Tanti, T. Mail(gmh) 1993 04 17.847 10.5 mv TA Poyner, G. 40-cm refl. Mail(grl) 1993 04 17.86 10.81 V Hanzl, D. N. Copernicus Obs. IAUC 5767 1993 04 17.86 11.44 B Hanzl, D. N. Copernicus Obs. IAUC 5767 1993 04 17.861 10.6 mv TA Hurst, G. Mail(gmh) 1993 04 17.87 10.1 mv T1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 17.87 10.3 mv T1 Carvajal, J. 31-cm f/4.5 refl. Mail(grl) 1993 04 17.872 10.5 mv TA Day, J. Mail(gmh) 1993 04 17.88 10.1 mv T1 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 17.88 10.3 mv T1 Garcia, D. 25-cm f/3.9 refl. Mail(grl) 1993 04 17.90 10.81 V Morrison et al. IAUC 5767 1993 04 17.901 10.6 mv TB Mizon, R. Mail(gmh) 1993 04 17.91 10.3 mv T1 Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 17.910 10.6 mv TA+ Midtskogen, O. 31.6-cm refl. 62x Mail(grl) 1993 04 17.929 10.8 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 17.938 10.9 mv TA Girard, P. Mail(gmh) 1993 04 17.944 10.5 mv TA Jones, M. Mail(gmh) 1993 04 17.944 10.7 mv TA Lines, R. Mail(gmh) 1993 04 17.999 11.0 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 18.00 11.53 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5769 1993 04 18.00 10.56 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5769 1993 04 18.031 10.6 mv TB Kratz, D. 20cm refl. 79x Mail 1993 04 18.12 10.82 V HC McDavid, D. 40-cm + CCD Mail 1993 04 18.12 11.40 B HC McDavid, D. 40-cm + CCD Mail 1993 04 18.125 10.7 mv AC Benge USA-TX Mail(rw) 1993 04 18.14 10.05 J Romanishin IAUC 5773 1993 04 18.14 10.05 H Romanishin IAUC 5773 1993 04 18.14 9.82 K Romanishin IAUC 5773 1993 04 18.16 11.0 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 18.2 11.33 U Richmond News 1993 04 18.2 11.42 B Richmond News 1993 04 18.2 10.85 V Richmond News 1993 04 18.2 10.51 R C Richmond News 1993 04 18.2 10.40 I C Richmond News 1993 04 18.3 11.44 B Richmond News 1993 04 18.3 10.86 V Richmond News 1993 04 18.3 10.55 R C Richmond News 1993 04 18.3 10.40 I C Richmond News 1993 04 18.465 10.7 mv TB Funada, M. 13cm refl. 88x Mail(kat) 1993 04 18.469 11.2 mv TB Makiguchi, N. 25-cm refl. Mail(kat) 1993 04 18.476 11.48 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 18.476 10.86 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 18.476 10.52 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 18.476 10.41 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 18.483 10.8 mv TB Sekino, Y. Mail(kat) 1993 04 18.494 10.9 mv TB Kushida, Y. 40cm CCD no filter Mail(kat) 1993 04 18.501 10.9 V TB Kushida, Y. 40cm CCD 550nm band- Mail(kat) 1993 04 18.501 &1 pass filter 1993 04 18.57 11.38 U HC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 18.57 11.46 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 18.57 10.85 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 18.57 10.37 R JHC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 18.57 10.17 I JHC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 18.582 10.9 mv TB Ohkura, N. 35.5-cm SCT Mail(kat) 1993 04 18.609 10.85 C TB Fujita, Y. 60cm CCD no filter Mail(kat) 1993 04 18.609 &1 Kuma Kogen Obs. 1993 04 18.644 10.97 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 18.644 &1 Ishida, T. Nishi-Harima Obs. 1993 04 18.800 10.6 mv TA Tanti, T. Mail(gmh) 1993 04 18.85 10.2 mv T1 Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 18.851 10.7 mv AC Moeller, M. 15.0-cm refl. Mail(jah) 1993 04 18.86 10.1 mv T1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 18.872 10.6 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 18.88 10.3 mv T1 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 18.88 10.3 mv T1 Carvajal, J. 31-cm f/4.5 refl. Mail(grl) 1993 04 18.915 10.5 mv TA+ Midtskogen, O. 31.6-cm refl. 62x Mail(grl) 1993 04 19.00 11.58 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5769 1993 04 19.00 10.52 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5769 1993 04 19.047 11.46 B Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 19.047 10.84 V Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 19.063 10.6 mv TB Kratz, D. 20cm refl. 79x Mail 1993 04 19.096 11.0 mv TB Bryan, J. 25-cm 80x Mail 1993 04 19.11 11.1 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 19.14 10.04 J Romanishin IAUC 5773 1993 04 19.14 10.04 H Romanishin IAUC 5773 1993 04 19.14 9.82 K Romanishin IAUC 5773 1993 04 19.15 10.98 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 19.15 11.4 mv MR Grosshans, K. 20-cm refl. News 1993 04 19.2 11.39 U Richmond News 1993 04 19.2 11.45 B Richmond News 1993 04 19.2 10.83 V Richmond News 1993 04 19.2 10.52 R C Richmond News 1993 04 19.2 10.42 I C Richmond News 1993 04 19.250 11.1 mv TA Hornby, P. Mail(gmh) 1993 04 19.450 10.9 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 19.454 11.51 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 19.454 10.87 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 19.454 10.51 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 19.454 10.39 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 19.472 10.9 mv TB Kushida, Y. 40cm CCD no filter Mail(kat) 1993 04 19.478 11.0 V TB Kushida, Y. 40cm CCD 550nm band- Mail(kat) 1993 04 19.478 &1 pass filter 1993 04 19.58 11.51 U HC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 19.58 11.50 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 19.58 10.86 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 19.58 10.34 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 19.58 10.16 I JHC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 19.634 10.85 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 19.634 &1 Ishida, T. Nishi-Harima Obs. 1993 04 19.666 11.1 mv TB Ohkura, N. 35.5-cm SCT Mail(kat) 1993 04 19.844 10.8 mv AC Moeller, M. 15.0-cm refl. Mail(jah) 1993 04 19.854 10.2 mv T1 Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 19.854 10.2 mv T1 Carvajal, J 31-cm f/4.5 refl. Mail(grl) 1993 04 19.854 10.2 mv T1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 19.851 10.8 mv TB Bremseth, P.-J. 20.3-cm SCT 80x Mail(grl) 1993 04 19.858 10.8 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 19.87 11.70 U Shakhovskoy et al. Crimea 1.25-m News 1993 04 19.87 11.69 B Shakhovskoy et al. Crimea 1.25-m News 1993 04 19.87 11.20 V Shakhovskoy et al. Crimea 1.25-m News 1993 04 19.87 10.38 R J Shakhovskoy et al. Crimea 1.25-m News 1993 04 19.87 10.27 I J Shakhovskoy et al. Crimea 1.25-m News 1993 04 19.88 10.87 V Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 19.88 11.55 B Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 19.88 11.53 U Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 19.88 10.30 R J Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 19.88 10.30 I J Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 19.885 10.2 mv T1 Rodriguez, D. 20-cm f/4 refl.+ CCD Mail(grl) 1993 04 19.89 10.8 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 19.892 10.7 mv TA+ Midtskogen, O. 31.6-cm refl. 62x Mail(grl) 1993 04 19.892 10.9 mv TA+ Skjaeraasen, O. 20.3-cm SCT 117x Mail(grl) 1993 04 19.90 11.0 mv TA Bengtsson, H. 15-cm refl. Mail(grl) 1993 04 19.92 10.8 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 19.92 10.9 mv Pietz, J. Mail(jah) 1993 04 19.924 11.0 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 19.927 11.6 mv TA Andersson, K. Mail(gmh) 1993 04 19.927 11.6 mv Rowlands, J. Mail(gmh) 1993 04 19.938 10.5 mv T1 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 19.943 11.1 mv TA Westlund, M. 20.3-cm SCT Mail(grl) 1993 04 19.948 10.98 V Takalo Finland Mail(rw) 1993 04 19.965 10.8 mv TA Andersson, K. Mail(gmh) 1993 04 19.98 11.0 mv TA Bengtsson, H. 15-cm refl. Mail(ben) 1993 04 19.986 11.46 B Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 19.986 10.82 V Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 20.00 11.63 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5769 1993 04 20.00 10.54 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5769 1993 04 20.000 10.8 mv TA Westlund, M. 20.3-cm SCT Mail(grl) 1993 04 20.033 11.2 mv TB Schmeer, P. 20.3-cm refl. 133x Mail 1993 04 20.042 11.0 mv TB Beauchamp Mail(rw) 1993 04 20.06 11.2 mv TB Rhoads News 1993 04 20.14 10.9 mv TB Beauchamp Mail(rw) 1993 04 20.16 11.01 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 20.17 11.1 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 20.2 11.53 U Richmond News 1993 04 20.2 11.53 B Richmond News 1993 04 20.2 10.88 V Richmond News 1993 04 20.2 10.53 R C Richmond News 1993 04 20.2 10.40 I C Richmond News 1993 04 20.212 10.02 J Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 20.212 10.02 H Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 20.212 9.84 K Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 20.240 11.1 mv TA Hornby, P. Mail(gmh) 1993 04 20.3 11.65 B Richmond News 1993 04 20.3 10.88 V Richmond News 1993 04 20.3 10.51 R C Richmond News 1993 04 20.3 10.41 I C Richmond News 1993 04 20.444 11.58 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 20.444 10.91 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 20.444 10.51 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 20.444 10.40 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 20.521 11.0 mv TB Sato, M. Mail(kat) 1993 04 20.531 11.0 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 20.55 11.63 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 20.55 11.62 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 20.55 10.90 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 20.55 10.37 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 20.55 10.14 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 20.605 11.04 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 20.605 &1 Ishida, T. Nishi-Harima Obs. 1993 04 20.826 11.2 mv TB Schmeer, P. 20.3-cm SCT 133x Mail 1993 04 20.851 10.9 mv AC Moeller, M. 15.0-cm refl. Mail(jah) 1993 04 20.854 10.8 mv T1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 20.88 11.4 mv TA Ekloef, A. 11-cm refl. Mail(ben) 1993 04 20.885 11.0 mv T1 Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 20.89 10.88 V Hanzl, D. N. Copernicus Obs. IAUC 5775 1993 04 20.89 11.62 B Hanzl, D. N. Copernicus Obs. IAUC 5775 1993 04 20.903 11.4 mv TA Shanklin, J. Mail(gmh) 1993 04 20.91 11.54 B Kulesza, B. Olsztyn Obs., Poland IAUC 5774 1993 04 20.91 10.79 V Kulesza, B. Olsztyn Obs., Poland IAUC 5774 1993 04 20.91 11.66 U Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 20.91 11.62 B Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 20.91 10.89 V Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 20.91 10.27 R J Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 20.91 10.32 I J Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 20.91 10.89 V Karlovsky, V. Hlohovec, Slovak IAUC 5783 1993 04 20.91 11.57 B Karlovsky, V. Hlohovec, Slovak IAUC 5783 1993 04 20.91 10.9 mv Pietz, J. Mail(jah) 1993 04 20.921 11.2 mv TB Schmeer, P. 20.3-cm SCT 133x Mail 1993 04 21.00 10.96 V C Prugniel, P. Obs. Haute Provence IAUC 5770 1993 04 21.00 11.72 B C Prugniel, P. Obs. Haute Provence IAUC 5770 1993 04 21.00 10.56 R C Prugniel, P. Obs. Haute Provence IAUC 5770 1993 04 21.00 10.46 I C Prugniel, P. Obs. Haute Provence IAUC 5770 1993 04 21.108 11.0 mv TB Bryan, J. 25-cm 80x Mail 1993 04 21.12 10.91 V HC McDavid, D. 40-cm + CCD Mail 1993 04 21.12 11.63 B HC McDavid, D. 40-cm + CCD Mail 1993 04 21.15 11.1 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 21.161 11.8 mv AC Benge USA-TX Mail(rw) 1993 04 21.240 11.2 mv TA Hornby, P. Mail(gmh) 1993 04 21.265 10.05 J Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 21.265 10.02 H Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 21.265 9.85 K Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 21.56 11.80 U HC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 21.56 11.78 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 21.56 10.95 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 21.56 10.40 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 21.56 10.19 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 21.854 10.6 mv TA Poyner, G. Mail 1993 04 21.854 10.9 mv T1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 21.865 10.4 mv T1 Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 04 21.867 11.1 mv TA Mizon, R. Mail(gmh) 1993 04 21.906 10.6 mv TA Hurst, G. Mail(gmh) 1993 04 21.91 11.0 mv Pietz, J. Mail(jah) 1993 04 21.913 11.0 mv TA West, J. Mail(gmh) 1993 04 21.916 10.5 mv TA Lines, R. Mail(gmh) 1993 04 21.918 11.4 mv TA Shanklin, J. Mail(gmh) 1993 04 21.924 10.8 mv TB+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 21.931 10.7 mv TA Gillingwater, R. Mail(gmh) 1993 04 21.967 11.1 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 21.967 &1 Class 2 (clouds) 1993 04 21.967 11.2 mv TB Schmeer, P. 20.3-cm SCT Mail 1993 04 21.969 10.9 mv T1 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 22.00 11.87 B C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 22.00 11.01 V C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 22.00 10.61 R C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 22.00 10.49 I C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 22.003 10.8 mv TB Poyner, G. Mail 1993 04 22.02 11.92 U Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.02 11.75 B Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.02 10.95 V Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.02 10.20 R J Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.02 10.33 I J Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.064 11.1 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 22.106 10.9 mv TB Bryan, J. 25-cm 80x Mail 1993 04 22.165 10.06 J Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 22.165 10.02 H Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 22.165 9.87 K Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 22.17 11.0 mv T1 Dillon, W. G. 28-cm SCT News 1993 04 22.2 10.99 V Richmond News 1993 04 22.2 10.62 R C Richmond News 1993 04 22.2 10.40 I C Richmond News 1993 04 22.2 11.75 B Richmond News 1993 04 22.2 11.00 V Richmond News 1993 04 22.2 10.61 R C Richmond News 1993 04 22.2 10.47 I C Richmond News 1993 04 22.494 11.1 mv TB Yamada, M. 16-cm Mail(kat) 1993 04 22.502 11.5 mv TB Iida, M. Mail(kat) 1993 04 22.560 11.2 mv TB Takahashi, S. 60-cm Mail(kat) 1993 04 22.78 12.01 U Shakhovskoy et al. Crimea 1.25-m News 1993 04 22.78 11.88 B Shakhovskoy et al. Crimea 1.25-m News 1993 04 22.78 10.98 V Shakhovskoy et al. Crimea 1.25-m News 1993 04 22.78 10.44 R J Shakhovskoy et al. Crimea 1.25-m News 1993 04 22.78 10.24 I J Shakhovskoy et al. Crimea 1.25-m News 1993 04 22.854 10.9 mv T1 Pujol, F. 31-cm refl. f/5 Mail(grl) 1993 04 22.875 11.3 mv T1 Ripero, J. 33.5-cm refl. f/4.5 Mail(grl) 1993 04 22.88 12.47:U Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.88 11.98 B Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.88 11.09 V Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.88 10.66 R J Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.88 10.53 I J Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.885 11.0 C T1 Rodriguez, D. 20-cm refl.f/4 + CCD Mail(grl) 1993 04 22.945 11.3 mv TB Schmeer, P. 20.3-cm SCT 133x Mail 1993 04 23.00 11.96 B C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 23.00 11.09 V C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 23.00 10.67 R C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 23.00 10.54 I C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 23.097 11.3 mv TB Bryan, J. 25-cm 80x Mail 1993 04 23.2 12.13 U Richmond News 1993 04 23.2 11.92 B Richmond News 1993 04 23.2 11.10 V Richmond News 1993 04 23.2 10.65 R C Richmond News 1993 04 23.2 10.47 I C Richmond News 1993 04 23.2 12.26 U Richmond News 1993 04 23.2 11.90 B Richmond News 1993 04 23.2 11.08 V Richmond News 1993 04 23.2 10.68 R C Richmond News 1993 04 23.2 10.46 I C Richmond News 1993 04 23.3 12.27 U Richmond News 1993 04 23.3 11.93 B Richmond News 1993 04 23.3 11.11 V Richmond News 1993 04 23.3 10.64 R C Richmond News 1993 04 23.3 10.48 I C Richmond News 1993 04 23.510 11.27:V Okyudo, M. and 60cm refl.+ CCD IAUC 5780 1993 04 23.510 &1 Ishida, T. Nishi-Harima Obs. 1993 04 23.56 12.23 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 23.56 12.01 B HC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 23.56 11.10 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 23.56 10.49 R JHC *Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 23.56 10.27 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 23.84 11.5 mv Pietz, J. Mail(jah) 1993 04 23.85 12.53 U Shakhovskoy et al. Crimea 1.25-m News 1993 04 23.85 12.26 B Shakhovskoy et al. Crimea 1.25-m News 1993 04 23.85 11.23 V Shakhovskoy et al. Crimea 1.25-m News 1993 04 23.85 10.53 R J Shakhovskoy et al. Crimea 1.25-m News 1993 04 23.85 10.43 I J Shakhovskoy et al. Crimea 1.25-m News 1993 04 23.875 11.5 mv AC Korth, S. Mail(jah) 1993 04 23.886 11.4 mv A1 Schmeer, P. 20.3-cm SCT 133x Mail 1993 04 23.896 11.2 mv T1 Garcia, F. 25-cm refl. f/3.9 Mail(grl) 1993 04 23.92 11.09 V Hanzl, D. N. Copernicus Obs. IAUC 5775 1993 04 23.92 12.09 B Hanzl, D. N. Copernicus Obs. IAUC 5775 1993 04 23.958 11.5 mv TA Poyner, G. 40-cm refl. Mail 1993 04 24.00 12.09 B C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 24.00 11.16 V C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 24.00 10.73 R C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 24.00 10.59 I C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 24.019 11.5 mv TA Poyner, G. Mail 1993 04 24.052 11.1 mv TB Wijers Mail(rw) 1993 04 24.063 11.5 mv TB Kratz, D. 31.8-cm Mail 1993 04 24.09 11.32 C TB Ferguson USA-CH Mail(rw) 1993 04 24.13 11.4 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 24.145 10.14 J Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 24.145 10.04 H Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 24.145 9.89 K Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 24.446 11.1 mv TB Sekino, Y. Mail(kat) 1993 04 24.521 11.6 mv TB Kiyota, S. 20-cm refl Mail(kat) 1993 04 24.542 11.2 mv TB Funada, M. 13-cm refl. 88x Mail(kat) 1993 04 24.552 11.2 C TB Kushida 40-cm refl. ST-4 Mail(kat) 1993 04 24.56 12.52 U HC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 24.56 12.23 B HC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 24.56 11.19 V HC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 24.56 10.54 R JHC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 24.56 10.31 I JHC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 24.75 12.75 U Shakhovskoy et al. Crimea 1.25-m News 1993 04 24.75 12.42 B Shakhovskoy et al. Crimea 1.25-m News 1993 04 24.75 11.31 V Shakhovskoy et al. Crimea 1.25-m News 1993 04 24.75 10.60 R J Shakhovskoy et al. Crimea 1.25-m News 1993 04 24.75 10.46 I J Shakhovskoy et al. Crimea 1.25-m News 1993 04 24.84 11.6 mv Pietz, J. Mail(jah) 1993 04 24.842 11.41 V Takalo Finland Mail(rw) 1993 04 24.854 11.4 mv T1 Ripero, J. 33.5-cm refl. f/4.5 Mail(grl) 1993 04 24.865 11.2 mv T1 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 24.875 11.5 mv T1 Pujol, F. 31-cm refl. f/5 Mail(grl) 1993 04 24.88 11.4 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 24.920 11.5 mv TA Westlund, M. 20.3-cm SCT Mail(grl) 1993 04 24.920 11.4 mv TA Andersson, K. Mail(gmh) 1993 04 24.927 11.38 V Takalo Finland Mail(rw) 1993 04 24.934 10.8 mv TB Bremseth, P.-J. 20.3-cm SCT 80x Mail(grl) 1993 04 24.974 11.5 mv A1 Schmeer, P. 20.3-cm SCT 133x Mail 1993 04 24.979 11.0 mv TA+ Dahle, H. 20.3-cm SCT 123x Mail(grl) 1993 04 25.02 11.4 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 25.02 11.22 V Hanzl, D. N. Copernicus Obs. IAUC 5777 1993 04 25.02 12.27 B Hanzl, D. N. Copernicus Obs. IAUC 5775 1993 04 25.04 11.3 mv TB Viens Mail(rw) 1993 04 25.040 11.3 mv TB Beauchamp Can-PQ Mail(rw) 1993 04 25.063 11.4 mv TA Andersson, K. Mail(gmh) 1993 04 25.15 11.4 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 25.2 12.56 U Richmond News 1993 04 25.2 11.31 V Richmond News 1993 04 25.2 10.74 R C Richmond News 1993 04 25.2 10.57 I C Richmond News 1993 04 25.246 10.16 J Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 25.246 10.09 H Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 25.246 9.89 K Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 25.476 11.6 mv TB Makiguchi, N. 25-cm refl. Mail(kat) 1993 04 25.493 11.2 mv TB Sekino, Y. Mail(kat) 1993 04 25.507 11.2 C TB Kushida 40-cm refl. ST-4 Mail(kat) 1993 04 25.548 11.21 C TB Fujita, Y. 60-cm CCD no filter Mail(kat) 1993 04 25.548 &1 Kuma-Kogen Obs. 1993 04 25.56 12.75 U HC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 25.56 12.46 B HC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 25.56 11.32 V HC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 25.56 10.64 R JHC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 25.56 10.37 I JHC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 25.562 11.4 mv TB Ohkura, N. 35.5-cm SCT Mail(kat) 1993 04 25.563 11.6 mv TB Kiyota, S. 20-cm refl. Mail(kat) 1993 04 25.620 11.27 V Kato, M. 60-cm + CCD IAUC 5783 1993 04 25.642 10.60 I C Kato, M. 60-cm + CCD IAUC 5783 1993 04 25.719 11.40 V Okyudo, M. and 60cm refl.+ CCD IAUC 5780 1993 04 25.719 &1 Ishida, T. Nishi-Harima Obs. 1993 04 25.75 12.99 U Shakhovskoy et al. Crimea 1.25-m News 1993 04 25.75 12.57 B Shakhovskoy et al. Crimea 1.25-m News 1993 04 25.75 11.41 V Shakhovskoy et al. Crimea 1.25-m News 1993 04 25.75 10.70 R J Shakhovskoy et al. Crimea 1.25-m News 1993 04 25.75 &1 (corrected for possible mistype) 1993 04 25.75 10.50 I J Shakhovskoy et al. Crimea 1.25-m News 1993 04 25.751 11.6 mv TB Yamada, M. 16-cm refl. Mail(kat) 1993 04 25.841 11.49 V Takalo Finland Mail(rw) 1993 04 25.873 11.8 mv TA Mizon, R. Mail(gmh) 1993 04 25.89 11.34 V Hanzl, D. N. Copernicus Planet. IAUC 5783 1993 04 25.89 12.42 B Hanzl, D. N. Copernicus Planet. IAUC 5783 1993 04 25.896 11.0 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 25.926 11.36 V Takalo Finland Mail(rw) 1993 04 25.951 11.6 mv TA Poyner, G. Mail 1993 04 25.978 11.5 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 25.978 &1 5 comp.stars; class 1 1993 04 26.098 11.7 mv TB Bryan, J. 25-cm 80x Mail 1993 04 26.15 11.35 V Skiff, B. Lowell Obs. IAUC 5775 1993 04 26.15 12.23 b Skiff, B. Lowell Obs. IAUC 5775 1993 04 26.15 11.7 mv T1 Flynn, E. G. 25-cm refl. Mail(grl) 1993 04 26.194 12.0 mv AC Benge USA-TX Mail(rw) 1993 04 26.2 10.62 I C Richmond News 1993 04 26.270 11.7 mv TA Hornby, P. Mail(gmh) 1993 04 26.450 11.7 mv TB Yamada, M. 16-cm refl. Mail(kat) 1993 04 26.454 11.30 C TB Fujita, Y. 60-cm CCD no filter Mail(kat) 1993 04 26.454 &1 Kuma-Kogen Obs. 1993 04 26.462 11.8 mv TB Iida, M. Mail(kat) 1993 04 26.469 11.5 mv TB Sekino, Y. Mail(kat) 1993 04 26.483 11.6 mv TB Takeuchi, T. 12.5-cm refr. Mail(kat) 1993 04 26.54 12.98 U HC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 26.54 12.58 B HC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 26.54 11.36 V HC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 26.54 10.68 R JHC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 26.54 10.39 I JHC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 26.562 11.3 C TB Kushida 40-cm refl. ST-4 Mail(kat) 1993 04 26.583 11.55 V Okyudo, M. and 60cm refl.+ CCD IAUC 5780 1993 04 26.583 &1 Ishida, T. Nishi-Harima Obs. 1993 04 26.740 11.46 V Okyudo, M. and 60cm refl.+ CCD IAUC 5780 1993 04 26.740 &1 Ishida, T. Nishi-Harima Obs. 1993 04 26.76 13.22 U Shakhovskoy et al. Crimea 1.25-m News 1993 04 26.76 12.73 B Shakhovskoy et al. Crimea 1.25-m News 1993 04 26.76 11.51 V Shakhovskoy et al. Crimea 1.25-m News 1993 04 26.76 10.74 R J Shakhovskoy et al. Crimea 1.25-m News 1993 04 26.76 10.55 I J Shakhovskoy et al. Crimea 1.25-m News 1993 04 26.873 11.9 mv A1 Schmeer, P. 20.3-cm SCT 133x Mail 1993 04 26.875 11.5 mv TA Poyner, G. 40-cm Mail 1993 04 26.882 11.5 mv TA+ Dahle, H. 20.3-cm SCT. 133x Mail(grl) 1993 04 26.889 11.1 mv TB Bremseth, P.-J. 20.3-cm SCT 80x Mail(grl) 1993 04 26.915 11.7 mv TA+ Granslo, B. H. 20.3-cm SCT. 123x Mail(grl) 1993 04 26.915 &1 5 comp.stars; class 1 1993 04 26.92 11.39 V Hanzl, D. N. Copernicus Planet. IAUC 5783 1993 04 26.92 12.52 B Hanzl, D. N. Copernicus Planet. IAUC 5783 1993 04 26.920 11.3 mv TA Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 04 27.108 11.7 mv TB Bryan, J. 25-cm 80x Mail 1993 04 27.17 11.5 mv TB Dillon, B. 28-cm SCT News 1993 04 27.3 12.86 U Richmond News 1993 04 27.3 12.52 B Richmond News 1993 04 27.3 11.49 V Richmond News 1993 04 27.3 10.90 R C Richmond News 1993 04 27.3 10.71 I C Richmond News 1993 04 27.3 13.08 U Richmond News 1993 04 27.3 12.56 B Richmond News 1993 04 27.3 11.47 V Richmond News 1993 04 27.3 10.92 R C Richmond News 1993 04 27.3 10.67 I C Richmond News 1993 04 27.434 12.0 mv TB Makiguchi, N. 25-cm refl. Mail(kat) 1993 04 27.462 11.7 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 04 27.503 11.6 mv TB Sekino, Y. Mail(kat) 1993 04 27.609 11.64 V Okyudo, M. and 60cm refl.+ CCD IAUC 5780 1993 04 27.609 &1 Ishida, T. Nishi-Harima Obs. 1993 04 27.632 11.35 C TB Kushida, Y. 40-cm refl. + CCD Mail(kat) 1993 04 27.753 13.44 U Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 27.753 12.86 B Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 27.753 11.60 V Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 27.753 10.80 R J Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 27.753 10.58 I J Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 27.878 11.5 mv T1 Garcia, F. 25-cm refl. f/3.9 Mail(grl) 1993 04 27.872 11.8 mv TA Hurst, G. Mail(gmh) 1993 04 27.885 11.7 mv T1 Garcia, D. 25-cm refl. f/3.9 Mail(grl) 1993 04 27.882 11.7 mv TA+ Andersen, O. I. 20.3-cm SCT 123x Mail(grl) 1993 04 27.882 &1 Oslo, Norway 1993 04 27.908 11.6 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 27.915 11.7 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 27.936 11.8 mv TA Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 04 27.938 11.9 mv A1 Schmeer, P. 20.3-cm SCT 133x Mail 1993 04 28.042 11.8 mv TB Kratz, D. 20.3-cm Mail 1993 04 28.05 11.6 mv TB Viens Mail(rw) 1993 04 28.056 11.6 mv TB Beauchamp Can-PQ Mail(rw) 1993 04 28.099 11.6 mv TB Buta, R. 25-cm U. of Alabama Mail(rw) 1993 04 28.13 11.42 C TB Ferguson USA-OH Mail(rw) 1993 04 28.2 12.97 U Richmond News 1993 04 28.2 12.64 B Richmond News 1993 04 28.2 11.55 V Richmond News 1993 04 28.2 10.86 R C Richmond News 1993 04 28.2 10.73 I C Richmond News 1993 04 28.3 13.18 U Richmond News 1993 04 28.3 12.65 B Richmond News 1993 04 28.3 11.55 V Richmond News 1993 04 28.3 10.99 R C Richmond News 1993 04 28.3 10.73 I C Richmond News 1993 04 28.868 11.6 mv TA Poyner, G. 40-cm Mail 1993 04 28.888 11.9 mv A1 Schmeer, P. 20.3-cm SCT 133x Mail 1993 04 28.89 12.0 mv Ekloef, A. 11-cm refl. Mail(ben) 1993 04 28.903 13.60 U Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 28.903 12.97 B Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 28.903 11.68 V Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 28.903 10.86 R J Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 28.903 10.62 I J Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 28.910 11.7 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 28.929 11.8 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 29.00 11.62 V C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 04 29.00 12.87 B C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 04 29.00 11.06 R C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 04 29.00 10.83 I C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 04 29.042 11.8 mv TB Kratz, D. Mail 1993 04 29.2 13.06 U Richmond News 1993 04 29.2 12.74 B Richmond News 1993 04 29.2 11.62 V Richmond News 1993 04 29.2 10.93 R C Richmond News 1993 04 29.2 10.77 I C Richmond News 1993 04 29.2 13.39 U Richmond News 1993 04 29.2 12.75 B Richmond News 1993 04 29.2 11.62 V Richmond News 1993 04 29.2 11.02 R C Richmond News 1993 04 29.2 10.78 I C Richmond News 1993 04 29.29 11.7 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 29.54 13.54 U HC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 29.54 12.84 B HC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 29.54 11.61 V HC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 29.54 10.87 R JHC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 29.54 10.59 I JHC *Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 29.865 12.2 mv T1 Ripero, J. 33.5-cm refl. f/4.5 Mail(grl) 1993 04 29.868 11.6 mv TA Poyner, G. 30-cm refl., class 1 Mail 1993 04 29.875 11.6 mv T1 Pujol, F. 31-cm refl. f/5 Mail(grl) 1993 04 29.917 11.8 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 29.925 11.9 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 29.938 11.9 mv T1 Garcia, F. 25-cm refl. f/3.9 Mail(grl) 1993 04 29.942 11.7 mv TA Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 04 29.969 11.9 mv MR Schmeer, P. 20.3-cm SCT 133x Mail 1993 04 30.04 11.8 mv TB Kratz, D. Mail 1993 04 30.04 &1 revised mag. Mail 1993 04 30.3 13.15 U Richmond News 1993 04 30.3 12.83 B Richmond News 1993 04 30.3 11.68 V Richmond News 1993 04 30.3 10.97 R C Richmond News 1993 04 30.3 10.80 I C Richmond News 1993 04 30.469 12.0 mv TB Yamada, M. 16-cm refl. Mail(kat) 1993 04 30.487 12.87 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 30.487 11.69 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 30.487 11.06 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 30.487 10.86 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 30.495 12.0 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 04 30.789 13.85 U Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 30.789 13.15 B Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 30.789 &1 (corrected for possible mistype) 1993 04 30.789 11.80 V Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 30.789 10.95 R J Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 30.789 10.67 I J Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 30.927 11.9 mv TA+ Dahle, H. 20.3-c, SCT 133x Mail(grl) 1993 04 30.978 11.8 mv TA Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 05 01.008 11.9 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 01.008 &1 IAUC 5788 1993 05 01.051 12.0 mv A1 Schmeer, P. 20.3-cm SCT 133x Mail 1993 05 01.07 11.74 V C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 01.07 13.01 B C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 01.07 11.15 R C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 01.07 10.90 I C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 01.09 11.59 C TB Ferguson USA-OH Mail(rw) 1993 05 01.11 11.8 mv TB Rhoads USA-NJ Mail(rw) 1993 05 01.11 11.8 mv TB Wijers USA-NJ Mail(rw) 1993 05 01.12 11.8 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 05 01.2 13.19 U Richmond News 1993 05 01.2 12.89 B Richmond News 1993 05 01.2 11.73 V Richmond News 1993 05 01.2 11.01 R C Richmond News 1993 05 01.2 10.85 I C Richmond News 1993 05 01.2 13.68 U Richmond News 1993 05 01.2 12.86 B Richmond News 1993 05 01.2 11.74 V Richmond News 1993 05 01.2 11.12 R C Richmond News 1993 05 01.2 10.86 I C Richmond News 1993 05 01.444 12.1 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 01.801 14.01 U Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 05 01.801 13.31 B Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 05 01.801 11.91 V Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 05 01.801 11.07 R J Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 05 01.801 10.77 I J Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 05 01.865 12.4 mv A1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 05 01.89 12.1 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 05 01.928 12.3 mv TA Westlund, M. 20.3-cm SCT Mail(grl) 1993 05 01.931 12.0 mv TB Bremseth, P.-J. 20.3-cm SCT 166x Mail(grl) 1993 05 01.978 11.9 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 01.979 12.0 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 05 01.98 12.1 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 05 02.049 11.9 mv TB Beauchamp Can-PQ Mail(rw) 1993 05 02.08 11.8 mv TB Viens Can-PQ Mail(rw) 1993 05 02.13 11.8 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 05 02.2 13.29 U Richmond News 1993 05 02.2 12.97 B Richmond News 1993 05 02.2 11.79 V Richmond News 1993 05 02.2 11.03 R C Richmond News 1993 05 02.2 10.87 I C Richmond News 1993 05 02.2 13.76 U Richmond News 1993 05 02.2 13.00 B Richmond News 1993 05 02.2 11.81 V Richmond News 1993 05 02.2 11.17 R C Richmond News 1993 05 02.2 10.90 I C Richmond News 1993 05 02.878 12.1 mv TA Poyner, G. 40-cm refl. Mail 1993 05 02.903 12.0 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 05 03.00 11.86 V C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 03.00 13.16 B C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 03.00 11.26 R C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 03.00 10.98 I C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 03.06 12.0 mv TB Viens Can-PQ Mail(rw) 1993 05 03.101 12.0 mv TB Beauchamp Can-PQ Mail(rw) 1993 05 03.115 11.9 mv TB Dillon USA-TX Mail(rw) 1993 05 03.123 12.3 mv TB Bryan, J. 25-cm 120x Mail 1993 05 03.2 13.24 U Richmond News 1993 05 03.2 13.00 B Richmond News 1993 05 03.2 11.84 V Richmond News 1993 05 03.2 11.05 R C Richmond News 1993 05 03.2 10.92 I C Richmond News 1993 05 03.20 12.0 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 05 03.3 13.58 U Richmond News 1993 05 03.3 13.02 B Richmond News 1993 05 03.3 11.88 V Richmond News 1993 05 03.3 11.20 R C Richmond News 1993 05 03.3 10.94 I C Richmond News 1993 05 03.865 12.4 mv A1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 05 03.875 12.0 C Rodriguez, D. 20-cm f/4 refl.+ CCD Mail(grl) 1993 05 03.885 11.8 mv A1 Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 05 03.885 12.3 mv A1 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 05 03.892 12.1 mv TA Poyner, G. 40-cm refl. Mail 1993 05 03.92 12.1 mv TA Bengtsson, H. 15-cm refl. Mail(ben) 1993 05 04.00 11.90 V C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 04.00 13.19 B C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 04.00 11.30 R C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 04.00 11.02 I C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 04.038 12.3 mv TA Poyner, G. 40-cm refl. Mail 1993 05 04.111 12.3 mv TB Bryan, J. 25-cm 120x Mail 1993 05 04.155 12.0 mv AC Benge Mail(rw) 1993 05 04.3 14.30 U *Richmond News 1993 05 04.3 13.11 B Richmond News 1993 05 04.3 11.91 V Richmond News 1993 05 04.3 11.14 R C Richmond News 1993 05 04.3 10.95 I C Richmond News 1993 05 04.513 12.1 mv TB Yamada, M. 16-cm refl. Mail(kat) 1993 05 04.565 11.9 mv TB Ohkura, N. 35.5-cm SCT Mail(kat) 1993 05 04.588 11.74 C TB *Fujita, S. 60cm refl + CCD Mail(kat) 1993 05 04.663 12.04 V HC Okyudo and Ishida 60cm refl.+ CCD Mail(kat) 1993 05 04.788 14.34 U Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 04.788 13.45 B Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 04.788 12.02 V Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 04.788 11.12 R J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 04.788 10.76 I J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 04.858 12.3 mv A1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 05 04.892 12.2 mv TA Poyner, G. 40-cm refl. Mail 1993 05 04.915 12.2 mv A1 Schmeer, P. 20.3-cm SCT 133x Mail 1993 05 04.915 &1 IAUC 5788 1993 05 05.17 12.4 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 05 05.2 13.38 U Richmond News 1993 05 05.2 13.16 B Richmond News 1993 05 05.2 11.96 V Richmond News 1993 05 05.2 11.18 R C Richmond News 1993 05 05.2 10.97 I C Richmond News 1993 05 05.426 12.6 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 05.543 12.3 mv TB Sekino, Y. 20-cm SCT Mail(kat) 1993 05 05.611 12.05 V HC Okyudo and Ishida 60cm refl.+ CCD Mail(kat) 1993 05 05.772 14.23 U Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 05.772 13.45 B Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 05.772 12.04 V Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 05.772 11.14 R J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 05.772 10.76 I J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 05.862 12.3 mv A1 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 05 05.885 12.2 mv A1 Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 05 05.896 12.2 C Rodriguez, D. 20-cm f/4 refl.+ CCD Mail(grl) 1993 05 05.941 12.3 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 05 05.941 &1 IAUC 5788 1993 05 05.968 12.2 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 06.13 12.5 mv TB *Wren, W. McDonald Obs. Mail(gav) 1993 05 06.614 12.5 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 06.749 12.10 V HC Okyudo and Ishida 60cm refl.+ CCD Mail(kat) 1993 05 06.760 14.23 U Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 06.760 13.47 B Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 06.760 12.09 V Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 06.760 11.21 R J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 06.760 10.81 I J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 06.897 12.2 mv TB Poyner, G. 30-cm refl. Mail 1993 05 07.027 12.3 mv TB Poyner, G. 40-cm refl. Mail 1993 05 07.096 12.3 mv TB Bryan, J. 25-cm 120x Mail 1993 05 07.455 12.2 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 07.468 11.86 C TB *Fujita, S. 60cm refl + CCD Mail(kat) 1993 05 07.495 12.4 mv TB Yamada, M. 16-cm refl. Mail(kat) 1993 05 07.701 12.07 V HC Okyudo and Ishida 60cm refl.+ CCD Mail(kat) 1993 05 07.88 12.4 mv Schmeer, P. IAUC 5788 1993 05 07.885 12.3 mv TA Poyner, G. 40-cm refl. Mail 1993 05 07.927 12.4 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 08.003 12.4 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 05 08.083 12.3 mv TB Kratz, D. 20.3-cm Mail 1993 05 08.15 12.8 mv TB *Wren, W. McDonald Obs. Mail(gav) 1993 05 08.798 14.37 U Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 08.798 13.60 B Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 08.798 12.21 V Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 08.798 11.32 R J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 08.798 10.92 I J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 08.963 12.5 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 05 08.972 12.2 mv TB Bremseth, P.-J. 20.3-cm SCT 166x Mail(grl) 1993 05 08.989 12.4 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 09.862 14.42 U Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 09.862 13.63 B Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 09.862 12.20 V Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 09.862 11.30 R J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 09.862 10.88 I J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 09.893 12.5 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 05 09.943 12.5 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 10.16 12.4 mv A2 Flynn, E. M. 25-cm refl. Mail(grl) 1993 05 10.896 12.5 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 05 10.929 12.6 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 11.073 12.4 mv TB Kratz, D. 20.3-cm Mail 1993 05 11.11 12.6 mv Dillon, W. G. IAUC 5788 1993 05 11.18 12.8 mv TB *Wren, W. McDonald Obs. Mail(gav) 1993 05 11.451 12.7 mv TB Makiguchi, N. 25-cm refl. Mail(kat) 1993 05 11.461 12.6 mv TB Sekino, Y. 20-cm SCT Mail(kat) 1993 05 11.543 12.3 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 11.689 12.21 V HC Okyudo and Ishida 60cm refl.+ CCD Mail(kat) 1993 05 11.895 12.5 mv TA Poyner, G. 40-cm refl. Mail 1993 05 11.897 12.5 mv TA+ Dahle, H. 20.3-cm SCT 200x Mail(grl) 1993 05 11.93 12.3 mv Shanklin, J. D. IAUC 5788 1993 05 11.949 12.5 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 12.469 12.25 V HC Okyudo and Ishida 60cm refl.+ CCD Mail(kat) 1993 05 12.470 12.6 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 12.487 12.5 mv TB Yamada, M. 16-cm refl. Mail(kat) 1993 05 12.545 12.3: mv TB Sekino, Y. 20-cm SCT Mail(kat) 1993 05 12.895 12.5 mv TA Poyner, G. 40-cm refl. Mail 1993 05 12.919 12.6 mv TA+*Dahle, H. 20.3-cm SCT 200x Mail(grl) 1993 05 12.961 12.5 mv TA+*Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 13.12 12.9 mv TB *Wren, W. McDonald Obs. Mail(gav) 1993 05 13.467 12.6 mv TB Sekino, Y. 20-cm SCT Mail(kat) 1993 05 13.496 12.6 mv TB Funada, M. 20-cm refr. 200x Mail(kat) 1993 05 13.498 12.6 mv TB Mihara, A. 20-cm refr. 200x Mail(kat) 1993 05 13.554 12.6 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 14.25 12.4 mv TB *Wren, W. McDonald Obs. Mail(gav) 1993 05 14.374 12.6 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 14.521 12.4 mv TB Yamada, M. 20-cm SCT Mail(kat) 1993 05 14.892 12.5 mv TA *Poyner, G. 40-cm refl. Mail 1993 05 15.17 12.7 mv TB *Wren, W. McDonald Obs. Mail(gav) 1993 05 15.524 12.6 mv TB *Hirosawa, K. 21-cm refl. Mail(kat) 1993 05 15.558 12.5 mv TB *Takahashi, S. 60-cm refl. Mail(kat) 1993 05 15.927 12.4 mv TA *Poyner, G. 40-cm refl. Mail 1993 05 16.15 12.9 mv TB *Wren, W. McDonald Obs. Mail(gav) 1993 05 16.487 12.38 V HC *Kato, M. 60-cm + CCD Mail 1993 05 16.510 11.51 I CHC *Kato, M. 60-cm + CCD Mail 2000--------------------------------------------------------------------------- 2001 2002 Remarks: 2003 #1 "Zero-point" correction using Corwin's star B was applied. 2004 (see IAUC 5770) 2005 #2 Same as #1, previously noted as "Corrected mag" 2006 * #3 Original data IAUC 5774; correction IAUC 5777; 2007 * + revised data privately communicated 2010 2100 @ == differential photometry without photoelectrically measured 2101 @ comparisons == 2102 @ (Journal of observations) 2103 @ 2104 @ from Braeside Observatory: 2105 @ (braeside@naucse.cse.nau.edu) 2106 @ 2107 @ Apr. 15.398 - 15.420 UT 2108 @ 18.199 - 15.239 UT 2109 @ 19.171 - 19.366 UT 2990 2991 Compiled by Taichi Kato (Kyoto University) ******************************** ************************************************************************* 34) From ALEX@BKYAST.BERKELEY.EDU Wed May 19 12:02:00 1993 Subject: SN 93J: correction, and quick update 5-19-93 Dear SN 1993J'ers: Correction to the previous message: I meant to say that extra efforts should be made to observe the supernova at the upcoming BRIGHT run, when many telescopes will not be suitably equipped for low-dispersion optical spectroscopy. Also, there will be at least a few additional participants at the Xian special session on SN 1993J: Craig Wheeler et al. --- results from McDonald Observatory P. Ho"flich et al. --- modeling Paul Muldin et al. --- results from the INT Group telescopes Fransson and Chevalier --- circumstellar interaction Bob Kirshner --- IUE (and HST?) UV data Additional participants in the AAS informal discussion on SN 1993J will be: Michael Richmond --- progenitor S. Van Dyk et al. --- radio observations G. Sonneborn --- UV spectrophotometry (in addition to a brief summary of Wednesday's talk on circumstellar emission) Doug Swartz --- optical/IR spectral modeling at t = 30-40 days. Keep observing, modeling, and theorizing! Cheers, Alex Filippenko PS. For those of you going crazy about the possibility of ANOTHER supernova: the apparent SN in M63 is a false alarm, I've been told by observers in Kiso. *************************************************************************8 35) From wheel@astro.as.utexas.edu Mon Jun 7 23:17:22 1993 Subject: pulsar? Status: RO We have been puzzling over the photometric behaviour of SN 1993J. It is distinctly different than SN 1987A. After the second, radioactive peak, SN 1987A was almost flat in U, but declined at distinctly steeper slopes for redder bands, BVRI. Although the timescales are accelerated because of the lower mass of the ejecta, there is a general concensus that SN 1993J has undergone a similar radioactive peak. After this peak, SN 1993J has shown a tendency for the rate of decline to decrease in all bands. If anything the rate of decline is less in the redder bands, just the opposite of SN 1987A. One can imagine that all the bands, including the bolometric light curve (Schmidt et al, submitted to Nature, and Alak Ray et al. presented in Xian) are approaching an asymptote. At the risk of causing another great pulsar panic, the naive interpretation of this is that there is a buried source of nearly constant luminosity, the clue for which we have searched without success for 6 years in SN 1987A. Our light curve models show that a constant luminosity of 10^41 erg/s in addition to radioactive decay is compatible with the current observations. If this is a pulsar with 10^12 Gauss, powered by a simple dipole mechanism, then it corresponds to a period of 5 ms. Observers in all wavelength bands should monitor SN 1983J closely to confirm or deny this conjecture, and the observed broad-band colors throughout the range UBVRI should especially be closely monitored. Craig Wheeler ******************************************************************* 36) From ALEX@BKYAST.BERKELEY.EDU Mon Jun 14 21:56:09 1993 Dear SN 1993J fans: It has been quite some time since I last sent you an update on the supernova; I've been away at several meetings, etc. The supernova is doing interesting things, though, and we need to keep observing it. In particular, there seems to be a shortage of infrared measurements. JHK photometry (and at longer wavelengths, if possible) should be done soon, since much of the bolometric luminosity of SN 1993J is now coming out in the infrared. It is conceivable that SN 1993J will form dust sometime during its first year, making infrared measurements even more important. JHK photometry should be easy for anyone who has access to the right equipment and telescopes. Infrared spectroscopy is also very desireable, but is considerably more difficult. Let me emphasize, however, that even the photometry would be of enormous value. Optical photometry should be continued, of course. There are indications that the U and B light curves have flattened out (but V, R, and I seem to still be dropping). Many of the smaller telescopes that I know of have CCDs that are not very sensitive in U, so data from other telescopes is badly needed. I urge anyone with the capability of doing UB photometry to get measurements as often as possible. Of critical importance to understanding the radio data is the velocity of the circumstellar wind. This can be obtained through high-dispersion data taken at early times. There are already some indications that the narrow H-alpha emission line had FWHM around 200-300 km/s in the very earliest spectra, but that within a few days it had become much narrower and fainter. I urge anyone with access to high-dispersion spectra taken during the first few days after explosion to publish them soon, or at least to make the results known to modelers and the radio observers. The most recent photometry table that I have from Taichi Kato is dated June 4. I will wait until he sends me an update before e-mailing it out, unless I receive no update within a few days. Cheers, Alex Filippenko From ALEX@BKYAST.BERKELEY.EDU Wed Jun 30 18:06:45 1993 Received: from cfa.harvard.edu by cfa0.HARVARD.EDU (4.1/SMI-4.0) id AA15734; Wed, 30 Jun 93 18:04:55 EDT Received: by cfa.harvard.edu; Wed, 30 Jun 93 18:03:57 -0400 Date: Wed, 30 Jun 1993 14:49:47 -0700 (PDT) From: ALEX@BKYAST.BERKELEY.EDU (ALEX FILIPPENKO, UC BERKELEY, 510-642-1813) Message-Id: <930630144947.24c00abc@BKYAST.BERKELEY.EDU> Subject: SN 1993J update, part 2. To: survey@deimos.caltech.edu, iac::psi%iberpac.lapalma::crb@BKYAST.BERKELEY.EDU, wheel@astro.as.utexas.edu, nova@astro.as.utexas.edu, pilar@cfanewton.HARVARD.EDU, brian@cfaleavitt.HARVARD.EDU, richmond@astro.Princeton.edu, bill@elysium.astro.wesleyan.edu, jeffery@cfa.HARVARD.EDU, ypaik@goofy.berkeley.edu, ho@javaman.berkeley.edu, matheson@salmo.berkeley.edu, jrg@titan.berkeley.edu, dsramek@aoc.nrao.edu, mrupen@aoc.nrao.edu, branch@atom1.nhn.uoknor.edu, ac@astro.as.utexas.edu, panagia@stsci.edu, lwells@noao.edu, leising@nova.phys.clemson.edu X-Vmsmail-To: @SNBRUNO2.MAIL Status: R SN 1993J enthusiasts: Here is the second half of Taichi Kato's table. Alex Filippenko *** 1993 04 20.00 11.63 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5769 1993 04 20.00 10.54 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5769 1993 04 20.000 10.8 mv TA Westlund, M. 20.3-cm SCT Mail(grl) 1993 04 20.033 11.2 mv TB Schmeer, P. 20.3-cm refl. 133x Mail(sch) 1993 04 20.042 11.0 mv TB Beauchamp Mail(rw) 1993 04 20.06 11.2 mv TB Rhoads News 1993 04 20.10 10.88 V *Herbst Mail(gav) 1993 04 20.10 11.54 B *Herbst Mail(gav) 1993 04 20.10 10.52 R C *Herbst Mail(gav) 1993 04 20.10 10.39 I C *Herbst Mail(gav) 1993 04 20.14 10.9 mv TB Beauchamp Mail(rw) 1993 04 20.16 11.01 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 20.17 11.1 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 20.2 11.53 U Richmond News 1993 04 20.2 11.53 B Richmond News 1993 04 20.2 10.88 V Richmond News 1993 04 20.2 10.53 R C Richmond News 1993 04 20.2 10.40 I C Richmond News 1993 04 20.2 10.88 V *CfA Mail(gav) 1993 04 20.2 11.56 B *CfA Mail(gav) 1993 04 20.2 10.52 R C *CfA Mail(gav) 1993 04 20.2 10.39 I C *CfA Mail(gav) 1993 04 20.212 10.02 J Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 20.212 10.02 H Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 20.212 9.84 K Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 20.240 11.1 mv TA Hornby, P. Mail(gmh) 1993 04 20.3 11.65 B Richmond News 1993 04 20.3 10.86 V *Richmond C News 1993 04 20.3 10.56 R C *Richmond C News 1993 04 20.3 10.40 I C *Richmond C News 1993 04 20.444 11.58 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 20.444 10.91 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 20.444 10.51 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 20.444 10.40 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 20.521 11.0 mv TB Sato, M. Mail(kat) 1993 04 20.531 11.0 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 20.55 11.63 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 20.55 11.62 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 20.55 10.90 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 20.55 10.37 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 20.55 10.14 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 20.605 11.04 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 20.605 &1 Ishida, T. Nishi-Harima Obs. 1993 04 20.826 11.2 mv TB Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 04 20.851 10.9 mv AC Moeller, M. 15.0-cm refl. Mail(jah) 1993 04 20.854 10.9 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 20.88 11.4 mv TA Ekloef, A. 11-cm refl. Mail(ben) 1993 04 20.885 11.0 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 04 20.89 10.88 V Hanzl, D. N. Copernicus Obs. IAUC 5775 1993 04 20.89 11.62 B Hanzl, D. N. Copernicus Obs. IAUC 5775 1993 04 20.903 11.4 mv TA Shanklin, J. Mail(gmh) 1993 04 20.908 11.0 mv TA Godwin, S. Mail(gmh) 1993 04 20.91 11.54 B Kulesza, B. Olsztyn Obs., Poland IAUC 5774 1993 04 20.91 10.79 V Kulesza, B. Olsztyn Obs., Poland IAUC 5774 1993 04 20.91 11.66 U Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 20.91 11.62 B Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 20.91 10.89 V Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 20.91 10.27 R J Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 20.91 10.32 I J Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 20.91 10.89 V Karlovsky, V. Hlohovec, Slovak IAUC 5783 1993 04 20.91 11.57 B Karlovsky, V. Hlohovec, Slovak IAUC 5783 1993 04 20.91 10.9 mv Pietz, J. Mail(jah) 1993 04 20.921 11.2 mv TB Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 04 20.93 11.74 B Mikuz, H. et al. Slovenia IAUC 5809 1993 04 20.93 10.83 V Mikuz, H. et al. Slovenia IAUC 5809 1993 04 20.93 10.56 R Mikuz, H. et al. Slovenia IAUC 5809 1993 04 20.93 10.41 I Mikuz, H. et al. Slovenia IAUC 5809 1993 04 20.981 11.0 mv TA Hewitt, N. Mail(gmh) 1993 04 21.00 10.96 V C Prugniel, P. Obs. Haute Provence IAUC 5770 1993 04 21.00 11.72 B C Prugniel, P. Obs. Haute Provence IAUC 5770 1993 04 21.00 10.56 R C Prugniel, P. Obs. Haute Provence IAUC 5770 1993 04 21.00 10.46 I C Prugniel, P. Obs. Haute Provence IAUC 5770 1993 04 21.010 10.6 mv TA Tanti, T. Mail(gmh) 1993 04 21.08 10.94 V *Herbst Mail(gav) 1993 04 21.08 11.66 B *Herbst Mail(gav) 1993 04 21.08 10.58 R C *Herbst Mail(gav) 1993 04 21.08 10.43 I C *Herbst Mail(gav) 1993 04 21.1 10.93 V *CfA Mail(gav) 1993 04 21.1 11.69 B *CfA Mail(gav) 1993 04 21.1 10.53 R C *CfA Mail(gav) 1993 04 21.1 10.43 I C *CfA Mail(gav) 1993 04 21.108 11.0 mv TB Bryan, J. 25-cm 80x Mail(bry) 1993 04 21.12 10.91 V HC McDavid, D. 40-cm + CCD Mail 1993 04 21.12 11.63 B HC McDavid, D. 40-cm + CCD Mail 1993 04 21.13 10.93 V *Herbst Mail(gav) 1993 04 21.13 11.65 B *Herbst Mail(gav) 1993 04 21.13 10.58 R C *Herbst Mail(gav) 1993 04 21.13 10.43 I C *Herbst Mail(gav) 1993 04 21.15 11.1 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 21.161 11.8 mv AC Benge USA-TX Mail(rw) 1993 04 21.2 10.94 V *CfA Mail(gav) 1993 04 21.2 11.67 B *CfA Mail(gav) 1993 04 21.2 10.55 R C *CfA Mail(gav) 1993 04 21.2 10.40 I C *CfA Mail(gav) 1993 04 21.240 11.2 mv TA Hornby, P. Mail(gmh) 1993 04 21.265 10.05 J Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 21.265 10.02 H Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 21.265 9.85 K Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 21.56 11.80 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 21.56 11.78 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 21.56 10.95 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 21.56 10.40 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 21.56 10.19 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 21.810 10.6 mv TA Tanti, T. Mail(gmh) 1993 04 21.854 11.0 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 21.854 10.6 mv TA Poyner, G. Mail(poy) 1993 04 21.861 10.7 mv TA McKim, R. Mail(gmh) 1993 04 21.865 10.4 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 04 21.867 11.1 mv TA Mizon, R. Mail(gmh) 1993 04 21.906 10.6 mv TA Hurst, G. Mail(gmh) 1993 04 21.91 11.0 mv Pietz, J. Mail(jah) 1993 04 21.913 11.0 mv TA West, J. Mail(gmh) 1993 04 21.916 10.5 mv TA Lines, R. Mail(gmh) 1993 04 21.918 11.4 mv TA Shanklin, J. Mail(gmh) 1993 04 21.924 10.8 mv TB+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 21.924 11.0 mv TA Godwin, S. Mail(gmh) 1993 04 21.931 10.7 mv TA Gillingwater, R. Mail(gmh) 1993 04 21.96 11.73 B *de-Grijs LaPalma Mail(rw) 1993 04 21.96 10.99 V *de-Grijs LaPalma Mail(rw) 1993 04 21.96 10.54 R C *de-Grijs LaPalma Mail(rw) 1993 04 21.96 10.40 I C *de-Grijs LaPalma Mail(rw) 1993 04 21.967 11.1 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 21.967 &1 Class 2 (clouds) 1993 04 21.967 11.2 mv TB Schmeer, P. 20.3-cm SCT Mail(sch) 1993 04 21.969 10.9 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 04 22.00 11.87 B C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 22.00 11.01 V C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 22.00 10.61 R C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 22.00 10.49 I C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 22.003 10.8 mv TB Poyner, G. Mail(poy) 1993 04 22.02 11.92 U Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.02 11.75 B Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.02 10.95 V Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.02 10.20 R J Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.02 10.33 I J Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.055 11.4 mv TA Girard, P. Mail(gmh) 1993 04 22.064 11.1 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 22.106 10.9 mv TB Bryan, J. 25-cm 80x Mail(bry) 1993 04 22.165 10.06 J Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 22.165 10.02 H Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 22.165 9.87 K Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 22.17 11.0 mv T1 Dillon, W. G. 28-cm SCT News 1993 04 22.2 10.97 V *Richmond C News 1993 04 22.2 10.66 R C *Richmond C News 1993 04 22.2 10.36 I C *Richmond C News 1993 04 22.2 11.75 B Richmond News 1993 04 22.2 11.00 V Richmond News 1993 04 22.2 10.61 R C Richmond News 1993 04 22.2 10.47 I C Richmond News 1993 04 22.2 10.99 V *CfA Mail(gav) 1993 04 22.2 11.80 B *CfA Mail(gav) 1993 04 22.2 10.58 R C *CfA Mail(gav) 1993 04 22.2 10.41 I C *CfA Mail(gav) 1993 04 22.494 11.1 mv TB Yamada, M. 16-cm Mail(kat) 1993 04 22.502 11.5 mv TB Iida, M. Mail(kat) 1993 04 22.560 11.2 mv TB Takahashi, S. 60-cm Mail(kat) 1993 04 22.78 12.01 U Shakhovskoy et al. Crimea 1.25-m News 1993 04 22.78 11.88 B Shakhovskoy et al. Crimea 1.25-m News 1993 04 22.78 10.98 V Shakhovskoy et al. Crimea 1.25-m News 1993 04 22.78 10.44 R J Shakhovskoy et al. Crimea 1.25-m News 1993 04 22.78 10.24 I J Shakhovskoy et al. Crimea 1.25-m News 1993 04 22.854 11.0 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 04 22.875 11.4 mv A2 Ripero, J. 33.5-cm refl. f/4.5 Mail(grl) 1993 04 22.86 11.82 B Mikuz, H. et al. Slovenia IAUC 5809 1993 04 22.86 11.04 V Mikuz, H. et al. Slovenia IAUC 5809 1993 04 22.86 10.69 R Mikuz, H. et al. Slovenia IAUC 5809 1993 04 22.86 10.51 I Mikuz, H. et al. Slovenia IAUC 5809 1993 04 22.88 12.47:U Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.88 11.98 B Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.88 11.09 V Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.88 10.66 R J Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.88 10.53 I J Mikolajewski et al. N. Copernicus Univ. IAUC 5774 1993 04 22.885 10.9 C A2 Rodriguez, D. 20-cm f/4 refl.+ CCD Mail(grl) 1993 04 22.945 11.3 mv TB Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 04 23.00 11.96 B C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 23.00 11.09 V C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 23.00 10.67 R C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 23.00 10.54 I C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 23.097 11.3 mv TB Bryan, J. 25-cm 80x Mail(bry) 1993 04 23.2 12.63 U *Richmond C News 1993 04 23.2 12.07 B *Richmond C News 1993 04 23.2 11.07 V *Richmond C News 1993 04 23.2 10.71 R C *Richmond C News 1993 04 23.2 10.44 I C *Richmond C News 1993 04 23.2 12.26 U Richmond News 1993 04 23.2 11.90 B Richmond News 1993 04 23.2 11.08 V Richmond News 1993 04 23.2 10.68 R C Richmond News 1993 04 23.2 10.46 I C Richmond News 1993 04 23.3 12.59 U *Richmond C News 1993 04 23.3 12.03 B *Richmond C News 1993 04 23.3 11.03 V *Richmond C News 1993 04 23.3 10.67 R C *Richmond C News 1993 04 23.3 10.40 I C *Richmond C News 1993 04 23.510 11.27:V Okyudo, M. and 60cm refl.+ CCD IAUC 5780 1993 04 23.510 &1 Ishida, T. Nishi-Harima Obs. 1993 04 23.56 12.23 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 23.56 12.01 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 23.56 11.10 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 23.56 10.49 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 23.56 10.27 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 23.84 11.5 mv Pietz, J. Mail(jah) 1993 04 23.85 12.53 U Shakhovskoy et al. Crimea 1.25-m News 1993 04 23.85 12.26 B Shakhovskoy et al. Crimea 1.25-m News 1993 04 23.85 11.23 V Shakhovskoy et al. Crimea 1.25-m News 1993 04 23.85 10.53 R J Shakhovskoy et al. Crimea 1.25-m News 1993 04 23.85 10.43 I J Shakhovskoy et al. Crimea 1.25-m News 1993 04 23.875 11.5 mv TB Korth, S. 13-cm f/10 refl. Mail(jah) 1993 04 23.886 11.4 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 04 23.896 11.2 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 04 23.91 12.01 B Mikuz, H. et al. Slovenia IAUC 5809 1993 04 23.91 11.13 V Mikuz, H. et al. Slovenia IAUC 5809 1993 04 23.91 10.65 R Mikuz, H. et al. Slovenia IAUC 5809 1993 04 23.91 10.34 I Mikuz, H. et al. Slovenia IAUC 5809 1993 04 23.91 12.04 B *de-Grijs LaPalma Mail(rw) 1993 04 23.91 11.16 V *de-Grijs LaPalma Mail(rw) 1993 04 23.91 10.66 R J *de-Grijs LaPalma Mail(rw) 1993 04 23.91 10.59 I J *de-Grijs LaPalma Mail(rw) 1993 04 23.92 11.09 V Hanzl, D. N. Copernicus Obs. IAUC 5775 1993 04 23.92 12.09 B Hanzl, D. N. Copernicus Obs. IAUC 5775 1993 04 23.950 10.6 mv TA Tanti, T. Mail(gmh) 1993 04 23.958 11.5 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 04 23.974 11.3 mv TA Hewitt, N. Mail(gmh) 1993 04 24.00 12.09 B C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 24.00 11.16 V C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 24.00 10.73 R C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 24.00 10.59 I C Prugniel, P. Obs. Haute Provence IAUC 5774 1993 04 24.019 11.5 mv TA Poyner, G. Mail(poy) 1993 04 24.03 11.16 V *Herbst Mail(gav) 1993 04 24.03 12.14 B *Herbst Mail(gav) 1993 04 24.03 10.70 R C *Herbst Mail(gav) 1993 04 24.03 10.52 I C *Herbst Mail(gav) 1993 04 24.052 11.1 mv TB Wijers Mail(rw) 1993 04 24.063 11.5 mv TB Kratz, D. 31.8-cm News 1993 04 24.09 11.32 C TB Ferguson USA-CH Mail(rw) 1993 04 24.12 11.19 V *Herbst Mail(gav) 1993 04 24.12 12.17 B *Herbst Mail(gav) 1993 04 24.12 10.71 R C *Herbst Mail(gav) 1993 04 24.12 10.53 I C *Herbst Mail(gav) 1993 04 24.13 11.4 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 24.145 10.14 J Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 24.145 10.04 H Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 24.145 9.89 K Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 24.3 11.21 V *CfA Mail(gav) 1993 04 24.3 12.17 B *CfA Mail(gav) 1993 04 24.3 10.74 R C *CfA Mail(gav) 1993 04 24.3 10.55 I C *CfA Mail(gav) 1993 04 24.446 11.1 mv TB Sekino, Y. Mail(kat) 1993 04 24.521 11.6 mv TB Kiyota, S. 20-cm refl Mail(kat) 1993 04 24.542 11.2 mv TB Funada, M. 13-cm refl. 88x Mail(kat) 1993 04 24.552 11.2 C TB Kushida 40-cm refl. ST-4 Mail(kat) 1993 04 24.56 12.52 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 24.56 12.23 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 24.56 11.19 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 24.56 10.54 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 24.56 10.31 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 24.75 12.75 U Shakhovskoy et al. Crimea 1.25-m News 1993 04 24.75 12.42 B Shakhovskoy et al. Crimea 1.25-m News 1993 04 24.75 11.31 V Shakhovskoy et al. Crimea 1.25-m News 1993 04 24.75 10.60 R J Shakhovskoy et al. Crimea 1.25-m News 1993 04 24.75 10.46 I J Shakhovskoy et al. Crimea 1.25-m News 1993 04 24.810 10.9 mv TA Tanti, T. Mail(gmh) 1993 04 24.84 11.6 mv Pietz, J. Mail(jah) 1993 04 24.842 11.41 V Takalo Finland Mail(rw) 1993 04 24.854 11.4 mv A2 Ripero, J. 33.5-cm refl. f/4.5 Mail(grl) 1993 04 24.865 11.2 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 04 24.875 11.5 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 04 24.878 11.4 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 24.89 12.22 B *de-Grijs LaPalma Mail(rw) 1993 04 24.89 11.24 V *de-Grijs LaPalma Mail(rw) 1993 04 24.89 10.82 R C *de-Grijs LaPalma Mail(rw) 1993 04 24.89 10.60 I C *de-Grijs LaPalma Mail(rw) 1993 04 24.920 11.5 mv TA Westlund, M. 20.3-cm SCT Mail(grl) 1993 04 24.920 11.4 mv TA Andersson, K. Mail(gmh) 1993 04 24.927 11.38 V Takalo Finland Mail(rw) 1993 04 24.934 10.8 mv TB Bremseth, P.-J. 20.3-cm SCT 80x Mail(grl) 1993 04 24.974 11.5 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 04 24.979 11.0 mv TA+ Dahle, H. 20.3-cm SCT 123x Mail(grl) 1993 04 25.02 11.22 V Hanzl, D. N. Copernicus Obs. IAUC 5777 1993 04 25.02 12.27 B Hanzl, D. N. Copernicus Obs. IAUC 5775 1993 04 25.021 11.4 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 25.04 11.3 mv TB Viens Mail(rw) 1993 04 25.040 11.3 mv TB Beauchamp Can-PQ Mail(rw) 1993 04 25.063 11.4 mv TA Andersson, K. Mail(gmh) 1993 04 25.15 11.4 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 25.2 12.56 U Richmond News 1993 04 25.2 11.26 V *Richmond C News 1993 04 25.2 10.79 R C *Richmond C News 1993 04 25.2 10.54 I C *Richmond C News 1993 04 25.2 11.30 V *CfA Mail(gav) 1993 04 25.2 12.38 B *CfA Mail(gav) 1993 04 25.2 10.80 R C *CfA Mail(gav) 1993 04 25.2 10.60 I C *CfA Mail(gav) 1993 04 25.246 10.16 J Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 25.246 10.09 H Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 25.246 9.89 K Smith, J. A. Kitt Peak 1.3-m IAUC 5780 1993 04 25.3 11.32 V *CfA Mial(gav) 1993 04 25.3 12.36 B *CfA Mial(gav) 1993 04 25.3 10.81 R C *CfA Mial(gav) 1993 04 25.3 10.60 I C *CfA Mial(gav) 1993 04 25.476 11.6 mv TB Makiguchi, N. 25-cm refl. Mail(kat) 1993 04 25.493 11.2 mv TB Sekino, Y. Mail(kat) 1993 04 25.507 11.2 C TB Kushida 40-cm refl. ST-4 Mail(kat) 1993 04 25.537 11.46 V HC Ohkura, N. and 35-cm SCT Mail(kat) 1993 04 25.537 &1 Ohshima, O. 1993 04 25.537 12.36 B HC Ohkura, N. and 35-cm SCT Mail(kat) 1993 04 25.537 &1 Ohshima, O. 1993 04 25.548 11.21 C TB Fujita, Y. 60-cm CCD no filter Mail(kat) 1993 04 25.548 &1 Kuma-Kogen Obs. 1993 04 25.56 12.75 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 25.56 12.46 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 25.56 11.32 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 25.56 10.64 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 25.56 10.37 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 25.562 11.4 mv TB Ohkura, N. 35.5-cm SCT Mail(kat) 1993 04 25.563 11.6 mv TB Kiyota, S. 20-cm refl. Mail(kat) 1993 04 25.620 11.27 V Kato, M. 60-cm + CCD IAUC 5783 1993 04 25.642 10.60 I C Kato, M. 60-cm + CCD IAUC 5783 1993 04 25.719 11.40 V Okyudo, M. and 60cm refl.+ CCD IAUC 5780 1993 04 25.719 &1 Ishida, T. Nishi-Harima Obs. 1993 04 25.75 12.99 U Shakhovskoy et al. Crimea 1.25-m News 1993 04 25.75 12.57 B Shakhovskoy et al. Crimea 1.25-m News 1993 04 25.75 11.41 V Shakhovskoy et al. Crimea 1.25-m News 1993 04 25.75 10.70 R J Shakhovskoy et al. Crimea 1.25-m News 1993 04 25.75 &1 (corrected for possible mistype) 1993 04 25.75 10.50 I J Shakhovskoy et al. Crimea 1.25-m News 1993 04 25.751 11.6 mv TB Yamada, M. 16-cm refl. Mail(kat) 1993 04 25.841 11.49 V Takalo Finland Mail(rw) 1993 04 25.873 11.8 mv TA Mizon, R. Mail(gmh) 1993 04 25.89 11.34 V Hanzl, D. N. Copernicus Planet. IAUC 5783 1993 04 25.89 12.42 B Hanzl, D. N. Copernicus Planet. IAUC 5783 1993 04 25.896 11.0 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 25.91 12.94 U *Ferguson LaPalma Mail(rw) 1993 04 25.91 12.36 B *Ferguson LaPalma Mail(rw) 1993 04 25.91 11.35 V *Ferguson LaPalma Mail(rw) 1993 04 25.91 10.77 R J *Ferguson LaPalma Mail(rw) 1993 04 25.91 10.62 I J *Ferguson LaPalma Mail(rw) 1993 04 25.926 11.36 V Takalo Finland Mail(rw) 1993 04 25.951 11.6 mv TA Poyner, G. Mail(poy) 1993 04 25.968 11.9 mv TA Girard, P. Mail(gmh) 1993 04 25.978 11.5 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 25.978 &1 5 comp.stars; class 1 1993 04 26.098 11.7 mv TB Bryan, J. 25-cm 80x Mail(bry) 1993 04 26.10 11.39 V *CfA Maol(gav) 1993 04 26.10 12.49 B *CfA Maol(gav) 1993 04 26.10 10.85 R C *CfA Maol(gav) 1993 04 26.10 10.63 I C *CfA Maol(gav) 1993 04 26.15 11.35 V Skiff, B. Lowell Obs. IAUC 5775 1993 04 26.15 12.23 b Skiff, B. Lowell Obs. IAUC 5775 1993 04 26.15 11.7 mv A1 Flynn, E. M. 25-cm refl. Mail(grl) 1993 04 26.194 12.0 mv AC Benge USA-TX Mail(rw) 1993 04 26.2 10.62 I C Richmond News 1993 04 26.270 11.7 mv TA Hornby, P. Mail(gmh) 1993 04 26.450 11.7 mv TB Yamada, M. 16-cm refl. Mail(kat) 1993 04 26.454 11.30 C TB Fujita, Y. 60-cm CCD no filter Mail(kat) 1993 04 26.454 &1 Kuma-Kogen Obs. 1993 04 26.462 11.8 mv TB Iida, M. Mail(kat) 1993 04 26.469 11.5 mv TB Sekino, Y. Mail(kat) 1993 04 26.483 11.6 mv TB Takeuchi, T. 12.5-cm refr. Mail(kat) 1993 04 26.54 12.98 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 26.54 12.58 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 26.54 11.36 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 26.54 10.68 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 26.54 10.39 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 26.562 11.3 C TB Kushida 40-cm refl. ST-4 Mail(kat) 1993 04 26.583 11.55 V Okyudo, M. and 60cm refl.+ CCD IAUC 5780 1993 04 26.583 &1 Ishida, T. Nishi-Harima Obs. 1993 04 26.740 11.46 V Okyudo, M. and 60cm refl.+ CCD IAUC 5780 1993 04 26.740 &1 Ishida, T. Nishi-Harima Obs. 1993 04 26.76 13.22 U Shakhovskoy et al. Crimea 1.25-m News 1993 04 26.76 12.73 B Shakhovskoy et al. Crimea 1.25-m News 1993 04 26.76 11.51 V Shakhovskoy et al. Crimea 1.25-m News 1993 04 26.76 10.74 R J Shakhovskoy et al. Crimea 1.25-m News 1993 04 26.76 10.55 I J Shakhovskoy et al. Crimea 1.25-m News 1993 04 26.8 11.9 mv *Pietz, J. Mail(jah) 1993 04 26.861 11.8 mv TA West, J. Mail(gmh) 1993 04 26.873 11.9 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 04 26.875 11.5 mv TA Poyner, G. 40-cm Mail(poy) 1993 04 26.875 11.0 mv TA Jones, M. Mail(gmh) 1993 04 26.88 12.46 B Mikuz, H. et al. Slovenia IAUC 5809 1993 04 26.88 11.43 V Mikuz, H. et al. Slovenia IAUC 5809 1993 04 26.88 10.92 R Mikuz, H. et al. Slovenia IAUC 5809 1993 04 26.880 12.1 mv TA Shanklin, J. Mail(gmh) 1993 04 26.882 11.5 mv TA+ Dahle, H. 20.3-cm SCT. 133x Mail(grl) 1993 04 26.889 11.1 mv TB Bremseth, P.-J. 20.3-cm SCT 80x Mail(grl) 1993 04 26.890 11.7 mv TA Worraker, W. Mail(gmh) 1993 04 26.899 11.8 mv TA Mizon, R. Mail(gmh) 1993 04 26.914 11.8 mv TB Korth, S. 36-cm f/11 refl. Mail(grl) 1993 04 26.915 11.7 mv TA+ Granslo, B. H. 20.3-cm SCT. 123x Mail(grl) 1993 04 26.915 &1 5 comp.stars; class 1 1993 04 26.92 11.39 V Hanzl, D. N. Copernicus Planet. IAUC 5783 1993 04 26.92 12.52 B Hanzl, D. N. Copernicus Planet. IAUC 5783 1993 04 26.920 11.3 mv TA Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 04 26.940 11.4 mv TA McCann, S. Mail(gmh) 1993 04 26.957 11.6 mv TA Day, J. Mail(gmh) 1993 04 27.108 11.7 mv TB Bryan, J. 25-cm 80x Mail(bry) 1993 04 27.17 11.5 mv TB Dillon, B. 28-cm SCT News 1993 04 27.230 11.7 mv TA Hornby, P. Mail(gmh) 1993 04 27.3 13.19 U *Richmond C News 1993 04 27.3 12.65 B *Richmond C News 1993 04 27.3 11.41 V *Richmond C News 1993 04 27.3 10.93 R C *Richmond C News 1993 04 27.3 10.63 I C *Richmond C News 1993 04 27.3 13.08 U Richmond News 1993 04 27.3 12.56 B Richmond News 1993 04 27.3 11.47 V Richmond News 1993 04 27.3 10.92 R C Richmond News 1993 04 27.3 10.67 I C Richmond News 1993 04 27.434 12.0 mv TB Makiguchi, N. 25-cm refl. Mail(kat) 1993 04 27.462 11.7 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 04 27.503 11.6 mv TB Sekino, Y. Mail(kat) 1993 04 27.609 11.64 V Okyudo, M. and 60cm refl.+ CCD IAUC 5780 1993 04 27.609 &1 Ishida, T. Nishi-Harima Obs. 1993 04 27.632 11.35 C TB Kushida, Y. 40-cm refl. + CCD Mail(kat) 1993 04 27.753 13.44 U Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 27.753 12.86 B Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 27.753 11.60 V Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 27.753 10.80 R J Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 27.753 10.58 I J Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 27.8 11.8 mv *Pietz, J. Mail(jah) 1993 04 27.857 12.0 mv TA Worraker, W. Mail(gmh) 1993 04 27.872 11.8 mv TA Hurst, G. Mail(gmh) 1993 04 27.878 11.5 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 04 27.882 11.7 mv TA+ Andersen, O. I. 20.3-cm SCT 123x Mail(grl) 1993 04 27.882 &1 Oslo, Norway 1993 04 27.885 11.7 mv A2 Garcia, D. 31-cm refl. Mail(grl) 1993 04 27.889 11.9 mv TA Gillingwater, R. Mail(gmh) 1993 04 27.899 11.0 mv TA Godwin, S. Mail(gmh) 1993 04 27.908 11.6 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 27.91 13.33 U *Ferguson LaPalma Mail(rw) 1993 04 27.91 12.65 B *Ferguson LaPalma Mail(rw) 1993 04 27.91 11.51 V *Ferguson LaPalma Mail(rw) 1993 04 27.91 10.88 R J *Ferguson LaPalma Mail(rw) 1993 04 27.91 10.73 I J *Ferguson LaPalma Mail(rw) 1993 04 27.915 11.7 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 27.917 11.5 mv TA Jones, M. Mail(gmh) 1993 04 27.936 11.8 mv TA Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 04 27.938 11.9 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 04 27.944 11.8 mv TA Gillingwater, R. Mail(gmh) 1993 04 27.965 11.9 mv TA Mizon, R. Mail(gmh) 1993 04 28.042 11.8 mv TB Kratz, D. 20.3-cm News 1993 04 28.05 11.6 mv TB Viens Mail(rw) 1993 04 28.056 11.6 mv TB Beauchamp Can-PQ Mail(rw) 1993 04 28.07 11.53 V *Herbst Mail(gav) 1993 04 28.07 12.73 B *Herbst Mail(gav) 1993 04 28.07 10.95 R C *Herbst Mail(gav) 1993 04 28.07 10.73 I C *Herbst Mail(gav) 1993 04 28.099 11.6 mv TB Buta, R. 25-cm U. of Alabama Mail(rw) 1993 04 28.13 11.42 C TB Ferguson USA-OH Mail(rw) 1993 04 28.2 12.97 U Richmond News 1993 04 28.2 12.64 B Richmond News 1993 04 28.2 11.55 V Richmond News 1993 04 28.2 10.86 R C Richmond News 1993 04 28.2 10.73 I C Richmond News 1993 04 28.3 13.31 U *Richmond C News 1993 04 28.3 12.79 B *Richmond C News 1993 04 28.3 11.48 V *Richmond C News 1993 04 28.3 10.91 R C *Richmond C News 1993 04 28.3 10.71 I C *Richmond C News 1993 04 28.8 11.9 mv *Pietz, J. Mail(jah) 1993 04 28.855 11.9 mv TA West, J. Mail(gmh) 1993 04 28.868 11.6 mv TA Poyner, G. 40-cm Mail(poy) 1993 04 28.87 13.45 U *Ferguson LaPalma Mail(rw) 1993 04 28.87 12.78 B *Ferguson LaPalma Mail(rw) 1993 04 28.87 11.63 V *Ferguson LaPalma Mail(rw) 1993 04 28.87 10.94 R J *Ferguson LaPalma Mail(rw) 1993 04 28.87 10.81 I J *Ferguson LaPalma Mail(rw) 1993 04 28.888 11.9 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 04 28.89 12.0 mv Ekloef, A. 11-cm refl. Mail(ben) 1993 04 28.90 11.9 mv Mizser Hungary Mail(rw) 1993 04 28.903 13.60 U Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 28.903 12.97 B Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 28.903 11.68 V Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 28.903 10.86 R J Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 28.903 10.62 I J Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 28.910 11.7 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 28.929 11.8 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 28.934 11.8 mv TA Jones, M. Mail(gmh) 1993 04 29.00 11.62 V C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 04 29.00 12.87 B C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 04 29.00 11.06 R C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 04 29.00 10.83 I C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 04 29.042 11.8 mv TB Kratz, D. Mail 1993 04 29.05 11.61 V *Herbst Mail(gav) 1993 04 29.05 12.85 B *Herbst Mail(gav) 1993 04 29.05 11.03 R C *Herbst Mail(gav) 1993 04 29.05 10.80 I C *Herbst Mail(gav) 1993 04 29.2 13.39 U *Richmond C News 1993 04 29.2 12.90 B *Richmond C News 1993 04 29.2 11.54 V *Richmond C News 1993 04 29.2 10.97 R C *Richmond C News 1993 04 29.2 10.74 I C *Richmond C News 1993 04 29.2 13.39 U Richmond News 1993 04 29.2 12.75 B Richmond News 1993 04 29.2 11.62 V Richmond News 1993 04 29.2 11.02 R C Richmond News 1993 04 29.2 10.78 I C Richmond News 1993 04 29.29 11.7 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 29.290 12.1 mv TA Hornby, P. Mail(gmh) 1993 04 29.54 13.54 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 29.54 12.84 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 29.54 11.61 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 29.54 10.87 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 29.54 10.59 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm IAUC 5777 1993 04 29.8 12.0 mv *Pietz, J. Mail(jah) 1993 04 29.865 12.0 mv A2 Ripero, J. 33.5-cm refl. f/4.5 Mail(grl) 1993 04 29.868 11.6 mv TA Poyner, G. 30-cm refl., class 1 Mail(poy) 1993 04 29.875 11.6 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 04 29.888 12.0 mv TA Day, J. Mail(gmh) 1993 04 29.890 12.0 mv Eklof, A. Mail(gmh) 1993 04 29.892 12.1 mv TA Hewitt, N. Mail(gmh) 1993 04 29.90 13.63 U *Ferguson LaPalma Mail(rw) 1993 04 29.90 12.82 B *Ferguson LaPalma Mail(rw) 1993 04 29.90 11.68 V *Ferguson LaPalma Mail(rw) 1993 04 29.90 10.98 R J *Ferguson LaPalma Mail(rw) 1993 04 29.90 10.79 I J *Ferguson LaPalma Mail(rw) 1993 04 29.917 11.8 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 29.918 10.01 K Kidger, M. et al. 4.2-m WHT IAUC 5795 1993 04 29.925 11.9 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 29.938 11.7 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 04 29.942 11.7 mv TA Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 04 29.948 12.1 mv TA Worraker, W. Mail(gmh) 1993 04 29.969 11.9 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 04 30.04 11.8 mv TB Kratz, D. News 1993 04 30.04 &1 revised mag. News 1993 04 30.06 11.67 V *Herbst Mail(gav) 1993 04 30.06 12.94 B *Herbst Mail(gav) 1993 04 30.06 11.08 R C *Herbst Mail(gav) 1993 04 30.06 10.83 I C *Herbst Mail(gav) 1993 04 30.2 11.71 V *CfA Mail(gav) 1993 04 30.2 12.91 B *CfA Mail(gav) 1993 04 30.2 11.10 R C *CfA Mail(gav) 1993 04 30.2 10.83 I C *CfA Mail(gav) 1993 04 30.3 13.49 U *Richmond C News 1993 04 30.3 12.98 B *Richmond C News 1993 04 30.3 11.68 V *Richmond C News 1993 04 30.3 11.01 R C *Richmond C News 1993 04 30.3 10.75 I C *Richmond C News 1993 04 30.469 12.0 mv TB Yamada, M. 16-cm refl. Mail(kat) 1993 04 30.487 12.87 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 30.487 11.69 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 30.487 11.06 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 30.487 10.86 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 30.495 12.0 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 04 30.789 13.85 U Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 30.789 13.15 B Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 30.789 &1 (corrected for possible mistype) 1993 04 30.789 11.80 V Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 30.789 10.95 R J Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 30.789 10.67 I J Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 04 30.8 12.0 mv *Pietz, J. Mail(jah) 1993 04 30.88 13.70 U *Ferguson LaPalma Mail(rw) 1993 04 30.88 12.94 B *Ferguson LaPalma Mail(rw) 1993 04 30.88 11.73 V *Ferguson LaPalma Mail(rw) 1993 04 30.88 11.03 R J *Ferguson LaPalma Mail(rw) 1993 04 30.88 10.86 I J *Ferguson LaPalma Mail(rw) 1993 04 30.886 12.1 mv TA Worraker, W. Mail(gmh) 1993 04 30.891 12.1 mv TA Day, J. Mail(gmh) 1993 04 30.896 12.0 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 04 30.927 11.9 mv TA+ Dahle, H. 20.3-c, SCT 133x Mail(grl) 1993 04 30.970 12.1 mv TA Shanklin, J. Mail(gmh) 1993 04 30.978 11.8 mv TA Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 05 01.0 12.0 mv *Pietz, J. Mail(jah) 1993 05 01.008 11.9 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 01.008 &1 IAUC 5788 1993 05 01.04 11.73 V *Herbst Mail(gav) 1993 05 01.04 13.00 B *Herbst Mail(gav) 1993 05 01.04 11.11 R C *Herbst Mail(gav) 1993 05 01.04 10.88 I C *Herbst Mail(gav) 1993 05 01.051 12.0 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 01.07 11.74 V C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 01.07 13.01 B C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 01.07 11.15 R C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 01.07 10.90 I C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 01.09 11.59 C TB Ferguson USA-OH Mail(rw) 1993 05 01.11 11.8 mv TB Rhoads USA-NJ Mail(rw) 1993 05 01.11 11.8 mv TB Wijers USA-NJ Mail(rw) 1993 05 01.12 11.8 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 05 01.2 13.51 U *Richmond C News 1993 05 01.2 13.04 B *Richmond C News 1993 05 01.2 11.65 V *Richmond C News 1993 05 01.2 11.05 R C *Richmond C News 1993 05 01.2 10.82 I C *Richmond C News 1993 05 01.2 13.68 U Richmond News 1993 05 01.2 12.86 B Richmond News 1993 05 01.2 11.74 V Richmond News 1993 05 01.2 11.12 R C Richmond News 1993 05 01.2 10.86 I C Richmond News 1993 05 01.444 12.1 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 01.801 14.01 U Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 05 01.801 13.31 B Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 05 01.801 11.91 V Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 05 01.801 11.07 R J Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 05 01.801 10.77 I J Shakhovskoy, N.M. Crimea 1.25-m News(bos) 1993 05 01.837 10.20 K Kidger, M. et al. 4.2-m WHT IAUC 5795 1993 05 01.865 12.2 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 05 01.885 12.1 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 05 01.927 12.1 mv TA Andersson, K. Mail(gmh) 1993 05 01.928 12.3 mv TA Westlund, M. 20.3-cm SCT Mail(grl) 1993 05 01.931 12.0 mv TB Bremseth, P.-J. 20.3-cm SCT 166x Mail(grl) 1993 05 01.957 12.3 mv TA Westlund, M. Mail(gmh) 1993 05 01.978 11.9 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 01.979 12.0 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 05 01.979 12.1 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 05 02.021 12.1 mv TA Andersson, K. Mail(gmh) 1993 05 02.04 11.78 V *Herbst Mail(gav) 1993 05 02.04 13.06 B *Herbst Mail(gav) 1993 05 02.04 11.16 R C *Herbst Mail(gav) 1993 05 02.04 10.91 I C *Herbst Mail(gav) 1993 05 02.049 11.9 mv TB Beauchamp Can-PQ Mail(rw) 1993 05 02.08 11.8 mv TB Viens Can-PQ Mail(rw) 1993 05 02.13 11.8 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 05 02.2 13.62 U *Richmond C News 1993 05 02.2 13.13 B *Richmond C News 1993 05 02.2 11.71 V *Richmond C News 1993 05 02.2 11.08 R C *Richmond C News 1993 05 02.2 10.85 I C *Richmond C News 1993 05 02.2 13.76 U Richmond News 1993 05 02.2 13.00 B Richmond News 1993 05 02.2 11.81 V Richmond News 1993 05 02.2 11.17 R C Richmond News 1993 05 02.2 10.90 I C Richmond News 1993 05 02.878 12.1 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 05 02.903 12.0 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 05 03.00 11.86 V C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 03.00 13.16 B C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 03.00 11.26 R C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 03.00 10.98 I C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 03.06 12.0 mv TB Viens Can-PQ Mail(rw) 1993 05 03.101 12.0 mv TB Beauchamp Can-PQ Mail(rw) 1993 05 03.115 11.9 mv TB Dillon USA-TX Mail(rw) 1993 05 03.123 12.3 mv TB Bryan, J. 25-cm 120x Mail(bry) 1993 05 03.2 13.47 U *Richmond C News 1993 05 03.2 13.13 B *Richmond C News 1993 05 03.2 11.74 V *Richmond C News 1993 05 03.2 11.08 R C *Richmond C News 1993 05 03.2 10.87 I C *Richmond C News 1993 05 03.20 12.0 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 05 03.3 13.58 U Richmond News 1993 05 03.3 13.02 B Richmond News 1993 05 03.3 11.88 V Richmond News 1993 05 03.3 11.20 R C Richmond News 1993 05 03.3 10.94 I C Richmond News 1993 05 03.800 12.3 mv TA Tanti, T. Mail(gmh) 1993 05 03.865 12.3 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 05 03.875 11.9 C A2 Rodriguez, D. 20-cm f/4 refl.+ CCD Mail(grl) 1993 05 03.883 12.1 mv TA Day, J. Mail(gmh) 1993 05 03.885 11.8 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 05 03.885 11.8 mv TA Deakes, K. Mail(gmh) 1993 05 03.892 12.1 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 05 03.910 12.3 mv TA Shanklin, J. Mail(gmh) 1993 05 03.910 12.2 mv TA Hodgson, W. Mail(gmh) 1993 05 03.92 12.1 mv TA Bengtsson, H. 15-cm refl. Mail(ben) 1993 05 03.958 12.3 mv A2 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 05 03.958 &1 Time is corrected from 1993 05 03.885 Mail(grl) 1993 05 04.00 11.90 V C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 04.00 13.19 B C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 04.00 11.30 R C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 04.00 11.02 I C Prugniel, P. Obs. Haute Provence IAUC 5783 1993 05 04.038 12.3 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 05 04.111 12.3 mv TB Bryan, J. 25-cm 120x Mail(bry) 1993 05 04.155 12.0 mv AC Benge Mail(rw) 1993 05 04.3 13.50 U *Richmond C News 1993 05 04.3 13.25 B *Richmond C News 1993 05 04.3 11.81 V *Richmond C News 1993 05 04.3 11.17 R C *Richmond C News 1993 05 04.3 10.90 I C *Richmond C News 1993 05 04.513 12.1 mv TB Yamada, M. 16-cm refl. Mail(kat) 1993 05 04.565 11.9 mv TB Ohkura, N. 35.5-cm SCT Mail(kat) 1993 05 04.583 11.93 V HC Ohkura, N. and 35-cm SCT Mail(kat) 1993 05 04.583 &1 Ohshima, O. 1993 05 04.583 13.17 B HC Ohkura, N. and 35-cm SCT Mail(kat) 1993 05 04.583 &1 Ohshima, O. 1993 05 04.588 11.74 C TB Fujita, S. 60cm refl + CCD Mail(kat) 1993 05 04.663 12.04 V HC Okyudo and Ishida 60cm refl.+ CCD Mail(kat) 1993 05 04.788 14.34 U Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 04.788 13.45 B Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 04.788 12.02 V Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 04.788 11.12 R J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 04.788 10.76 I J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 04.810 12.2 mv TA Tanti, T. Mail(gmh) 1993 05 04.858 12.3 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 05 04.882 12.1 mv TA Day, J. Mail(gmh) 1993 05 04.883 12.2 mv TA Worraker, W. Mail(gmh) 1993 05 04.892 12.2 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 05 04.897 12.3 mv TA Hurst, G. Mail(gmh) 1993 05 04.915 12.2 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 04.915 &1 IAUC 5788 1993 05 04.920 12.3 mv TA Shanklin, J. Mail(gmh) 1993 05 05.0 11.95 V C *Prugniel Mail(gav) 1993 05 05.0 13.25 B C *Prugniel Mail(gav) 1993 05 05.0 11.34 R C *Prugniel Mail(gav) 1993 05 05.0 11.06 I C *Prugniel Mail(gav) 1993 05 05.1 12.0 mv Vanmunster, T. 35-cm f/5 refl. Mail(yam) 1993 05 05.17 12.4 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 05 05.2 13.62 U *Richmond C News 1993 05 05.2 13.30 B *Richmond C News 1993 05 05.2 11.86 V *Richmond C News 1993 05 05.2 11.21 R C *Richmond C News 1993 05 05.2 10.92 I C *Richmond C News 1993 05 05.426 12.6 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 05.543 12.3 mv TB Sekino, Y. 20-cm SCT Mail(kat) 1993 05 05.611 12.05 V HC Okyudo and Ishida 60cm refl.+ CCD Mail(kat) 1993 05 05.772 14.23 U Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 05.772 13.45 B Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 05.772 12.04 V Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 05.772 11.14 R J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 05.772 10.76 I J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 05.8 12.3 mv *Pietz, J. Mail(jah) 1993 05 05.840 10.16 K Kidger, M. et al. 4.2-m WHT IAUC 5795 1993 05 05.840 10.32 H Kidger, M. et al. 4.2-m WHT IAUC 5795 1993 05 05.860 12.3 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 05.862 12.4 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 05 05.884 12.5 mv TA Hurst, G. Mail(gmh) 1993 05 05.884 12.4 mv TA Worraker, W. Mail(gmh) 1993 05 05.885 12.2 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 05 05.885 12.4 mv TA West, J. Mail(gmh) 1993 05 05.89 14.10 U *Martin LaPalma Mail(rw) 1993 05 05.89 13.26 B *Martin LaPalma Mail(rw) 1993 05 05.89 12.01 V *Martin LaPalma Mail(rw) 1993 05 05.89 11.28 R J *Martin LaPalma Mail(rw) 1993 05 05.89 11.05 I J *Martin LaPalma Mail(rw) 1993 05 05.896 12.1 C A2 Rodriguez, D. 20-cm f/4 refl.+ CCD Mail(grl) 1993 05 05.9 12.2 mv Vanmunster, T. 35-cm f/5 refl. Mail(yam) 1993 05 05.917 12.5 mv TA Hewitt, N. Mail(gmh) 1993 05 05.930 12.3 mv TA Shanklin, J. Mail(gmh) 1993 05 05.941 12.3 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 05 05.941 &1 IAUC 5788 1993 05 05.968 12.2 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 06.0 11.98 V C *Prugniel Mail(gav) 1993 05 06.0 13.29 B C *Prugniel Mail(gav) 1993 05 06.0 11.38 R C *Prugniel Mail(gav) 1993 05 06.0 11.09 I C *Prugniel Mail(gav) 1993 05 06.11 11.61 C Ferguson USA-OH Mail(rw) 1993 05 06.13 12.5 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 05 06.614 12.5 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 06.749 12.10 V HC Okyudo and Ishida 60cm refl.+ CCD Mail(kat) 1993 05 06.760 14.23 U Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 06.760 13.47 B Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 06.760 12.09 V Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 06.760 11.21 R J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 06.760 10.81 I J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 06.833 10.35 K Kidger, M. et al. 4.2-m WHT IAUC 5795 1993 05 06.833 10.53 H Kidger, M. et al. 4.2-m WHT IAUC 5795 1993 05 06.833 10.87 J Kidger, M. et al. 4.2-m WHT IAUC 5795 1993 05 06.865 12.3 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 05 06.884 12.3 mv TA Day, J. Mail(gmh) 1993 05 06.896 12.5 mv TA West, J. Mail(gmh) 1993 05 06.897 12.2 mv TB Poyner, G. 30-cm refl. Mail(poy) 1993 05 06.899 12.3 mv TA Gillingwater, R. Mail(gmh) 1993 05 06.900 12.4 mv TA Shanklin, J. Mail(gmh) 1993 05 06.906 12.4 mv TA Worraker, W. Mail(gmh) 1993 05 06.920 12.7 mv TA Hurst, G. Mail(gmh) 1993 05 07.0 12.04 V C *Prugniel Mail(gav) 1993 05 07.0 13.38 B C *Prugniel Mail(gav) 1993 05 07.0 11.42 R C *Prugniel Mail(gav) 1993 05 07.0 11.13 I C *Prugniel Mail(gav) 1993 05 07.027 12.3 mv TB Poyner, G. 40-cm refl. Mail(poy) 1993 05 07.04 12.05 V *Herbst Mail(gav) 1993 05 07.04 13.37 B *Herbst Mail(gav) 1993 05 07.04 11.40 R C *Herbst Mail(gav) 1993 05 07.04 11.08 I C *Herbst Mail(gav) 1993 05 07.096 12.3 mv TB Bryan, J. 25-cm 120x Mail(bry) 1993 05 07.16 11.95 V *Skiff Mail(gav) 1993 05 07.2 13.61 U *Richmond C News 1993 05 07.2 13.40 B *Richmond C News 1993 05 07.2 11.94 V *Richmond C News 1993 05 07.2 11.29 R C *Richmond C News 1993 05 07.2 10.99 I C *Richmond C News 1993 05 07.455 12.2 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 07.468 11.86 C TB Fujita, S. 60cm refl + CCD Mail(kat) 1993 05 07.495 12.4 mv TB Yamada, M. 16-cm refl. Mail(kat) 1993 05 07.701 12.07 V HC Okyudo and Ishida 60cm refl.+ CCD Mail(kat) 1993 05 07.861 12.2 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 05 07.877 12.4 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 07.885 12.3 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 05 07.896 12.1 mv TA Deakes, K. Mail(gmh) 1993 05 07.897 12.4 mv TA Day, J. Mail(gmh) 1993 05 07.898 12.4 mv TA McKim, R. Mail(gmh) 1993 05 07.906 12.4 mv TA Hodgson, W. Mail(gmh) 1993 05 07.910 12.3 mv TA Taylor, M. Mail(gmh) 1993 05 07.917 12.2 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 05 07.920 12.9 mv TA Hurst, G. Mail(gmh) 1993 05 07.926 12.4 mv TA Worraker, W. Mail(gmh) 1993 05 07.927 12.0 C A2 Rodriguez, D. 20-cm f/4 refl.+ CCD Mail(grl) 1993 05 07.927 12.4 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 07.930 12.3 mv TA Shanklin, J. Mail(gmh) 1993 05 07.934 13.0 mv TA Hewitt, N. Mail(gmh) 1993 05 07.958 12.1 mv TA Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 05 07.970 12.2 mv TA Early, D. Mail(gmh) 1993 05 08.0 12.08 V C *Prugniel Mail(gav) 1993 05 08.0 13.41 B C *Prugniel Mail(gav) 1993 05 08.0 11.47 R C *Prugniel Mail(gav) 1993 05 08.0 11.16 I C *Prugniel Mail(gav) 1993 05 08.003 12.4 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 05 08.008 12.3 mv TA Taylor, M. Mail(gmh) 1993 05 08.03 12.07 V *Herbst Mail(gav) 1993 05 08.03 13.26 B *Herbst Mail(gav) 1993 05 08.03 11.41 R C *Herbst Mail(gav) 1993 05 08.03 11.12 I C *Herbst Mail(gav) 1993 05 08.06 12.1 mv TB Viens Mail(rw) 1993 05 08.083 12.3 mv TB Kratz, D. 20.3-cm News 1993 05 08.10 11.91 C Ferguson USA-OH Mail(rw) 1993 05 08.15 12.8 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 05 08.16 12.01 V *Skiff Mail(gav) 1993 05 08.2 13.29 B Richmond News 1993 05 08.2 12.08 V Richmond News 1993 05 08.2 11.42 R C Richmond News 1993 05 08.2 11.11 I C Richmond News 1993 05 08.798 14.37 U Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 08.798 13.60 B Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 08.798 12.21 V Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 08.798 11.32 R J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 08.798 10.92 I J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 08.830 12.3 mv TA Tanti, T. Mail(gmh) 1993 05 08.868 12.3 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 05 08.875 12.3 mv A2 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 05 08.878 12.4 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 08.885 12.2 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 05 08.960 12.1 mv TA Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 05 08.963 12.5 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 05 08.972 12.2 mv TB Bremseth, P.-J. 20.3-cm SCT 166x Mail(grl) 1993 05 08.989 12.4 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 09.04 12.10 V *Herbst Mail(gav) 1993 05 09.04 13.42 B *Herbst Mail(gav) 1993 05 09.04 11.45 R C *Herbst Mail(gav) 1993 05 09.04 11.13 I C *Herbst Mail(gav) 1993 05 09.07 12.2 mv TB Viens Mail(rw) 1993 05 09.12 11.82 C Ferguson USA-OH Mail(rw) 1993 05 09.18 12.8 mv TB Wren, W. 60-cm refl.,McDonald Mail(gav) 1993 05 09.18 12.01 V *Skiff Mail(gav) 1993 05 09.2 14.10 U Richmond News 1993 05 09.2 13.34 B Richmond News 1993 05 09.2 12.11 V Richmond News 1993 05 09.2 11.44 R C Richmond News 1993 05 09.2 11.13 I C Richmond News 1993 05 09.3 13.72 U *Richmond C News 1993 05 09.3 13.48 B *Richmond C News 1993 05 09.3 12.01 V *Richmond C News 1993 05 09.3 11.35 R C *Richmond C News 1993 05 09.3 11.15 I C *Richmond C News 1993 05 09.753 12.3 mv Koushiappas, S. Mail(gmh) 1993 05 09.862 14.42 U Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 09.862 13.63 B Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 09.862 12.20 V Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 09.862 11.30 R J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 09.862 10.88 I J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 09.893 12.5 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 05 09.896 12.1 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 05 09.934 12.5 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 09.943 12.5 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 09.969 12.2 mv TA Midtskogen, O. 31.6-cm refl. 62x Mail(grl) 1993 05 10.0 12.12 V C *Prugniel Mail(gav) 1993 05 10.0 13.45 B C *Prugniel Mail(gav) 1993 05 10.0 11.52 R C *Prugniel Mail(gav) 1993 05 10.0 11.22 I C *Prugniel Mail(gav) 1993 05 10.07 12.2 mv TB Viens Mail(rw) 1993 05 10.16 12.4 mv A2 Flynn, E. M. 25-cm refl. Mail(grl) 1993 05 10.18 12.08 V *Skiff Mail(gav) 1993 05 10.2 12.17 V *CfA Mail(gav) 1993 05 10.2 13.48 B *CfA Mail(gav) 1993 05 10.2 11.51 R C *CfA Mail(gav) 1993 05 10.2 11.15 I C *CfA Mail(gav) 1993 05 10.3 13.60 U *Richmond C News 1993 05 10.3 13.47 B *Richmond C News 1993 05 10.3 12.01 V *Richmond C News 1993 05 10.3 11.38 R C *Richmond C News 1993 05 10.3 11.02 I C *Richmond C News 1993 05 10.8 12.6 mv Vanmunster, T. 35-cm f/5 refl. Mail(yam) 1993 05 10.8 12.5 mv *Pietz, J. Mail(jah) 1993 05 10.865 12.3 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 05 10.896 12.5 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 05 10.906 12.6 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 10.917 12.3 C A2 Rodriguez, D. 20-cm f/4 refl.+ CCD Mail(grl) 1993 05 10.920 12.7 mv TA Girard, P. Mail(gmh) 1993 05 10.925 12.6 mv TA Shanklin, J. Mail(gmh) 1993 05 10.929 12.6 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 10.963 12.3 mv TA Midtskogen, O. 31.6-cm refl. 62x Mail(grl) 1993 05 11.0 12.17 V C *Prugniel Mail(gav) 1993 05 11.0 13.50 B C *Prugniel Mail(gav) 1993 05 11.0 11.56 R C *Prugniel Mail(gav) 1993 05 11.0 11.25 I C *Prugniel Mail(gav) 1993 05 11.073 12.4 mv TB Kratz, D. 20.3-cm News 1993 05 11.115 12.6 mv Dillon, W. G. IAUC 5788 1993 05 11.115 &1 Mail(rw) 1993 05 11.15 11.96 C Ferguson Mail(rw) 1993 05 11.18 12.8 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 05 11.18 12.11 V *Skiff Mail(gav) 1993 05 11.2 12.08 V *Richmond C News 1993 05 11.2 11.43 R C *Richmond C News 1993 05 11.2 11.03 I C *Richmond C News 1993 05 11.2 12.20 V *CfA Mail(gav) 1993 05 11.2 13.51 B *CfA Mail(gav) 1993 05 11.2 11.54 R C *CfA Mail(gav) 1993 05 11.2 11.18 I C *CfA Mail(gav) 1993 05 11.451 12.7 mv TB Makiguchi, N. 25-cm refl. Mail(kat) 1993 05 11.461 12.6 mv TB Sekino, Y. 20-cm SCT Mail(kat) 1993 05 11.543 12.3 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 11.689 12.21 V HC Okyudo and Ishida 60cm refl.+ CCD Mail(kat) 1993 05 11.8 12.5 mv *Pietz, J. Mail(jah) 1993 05 11.875 12.3 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 05 11.885 12.3 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 05 11.895 12.5 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 05 11.897 12.5 mv TA+ Dahle, H. 20.3-cm SCT 200x Mail(grl) 1993 05 11.897 12.9 mv TA Hurst, G. Mail(gmh) 1993 05 11.901 12.5 mv TA Day, J. Mail(gmh) 1993 05 11.93 12.3 mv Shanklin, J. D. England IAUC 5788 1993 05 11.938 12.3 mv A2 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 05 11.938 12.6 mv TA Deakes, K. Mail(gmh) 1993 05 11.949 12.5 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 11.953 12.3 mv TA Midtskogen, O. 31.6-cm refl. 62x Mail(grl) 1993 05 12.0 12.20 V C *Prugniel Mail(gav) 1993 05 12.0 13.51 B C *Prugniel Mail(gav) 1993 05 12.0 11.60 R C *Prugniel Mail(gav) 1993 05 12.0 11.27 I C *Prugniel Mail(gav) 1993 05 12.006 12.6 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 12.469 12.25 V HC Okyudo and Ishida 60cm refl.+ CCD Mail(kat) 1993 05 12.470 12.6 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 12.487 12.5 mv TB Yamada, M. 16-cm refl. Mail(kat) 1993 05 12.545 12.3: mv TB Sekino, Y. 20-cm SCT Mail(kat) 1993 05 12.666 12.15 V HC Ohkura, N. and 35-cm SCT Mail(kat) 1993 05 12.666 &1 Ohshima, O. 1993 05 12.666 13.24 B HC Ohkura, N. and 35-cm SCT Mail(kat) 1993 05 12.666 &1 Ohshima, O. 1993 05 12.895 12.5 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 05 12.917 12.3 mv A2 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 05 12.919 12.6 mv TA+ Dahle, H. 20.3-cm SCT 200x Mail(grl) 1993 05 12.958 12.3 mv TA Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 05 12.961 12.5 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 12.963 12.5 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 13.12 12.9 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 05 13.467 12.6 mv TB Sekino, Y. 20-cm SCT Mail(kat) 1993 05 13.496 12.6 mv TB Funada, M. 20-cm refr. 200x Mail(kat) 1993 05 13.498 12.6 mv TB Mihara, A. 20-cm refr. 200x Mail(kat) 1993 05 13.554 12.6 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 13.818 14.47 U Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 13.818 13.68 B Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 13.818 12.25 V Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 13.818 11.36 R J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 13.818 10.87 I J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 13.924 12.6 mv TA+ Dahle, H. 20.3-cm SCT 200x Mail(grl) 1993 05 14.0 12.25 V C *Prugniel Mail(gav) 1993 05 14.0 13.57 B C *Prugniel Mail(gav) 1993 05 14.0 11.65 R C *Prugniel Mail(gav) 1993 05 14.0 11.32 I C *Prugniel Mail(gav) 1993 05 14.073 12.5 mv A2 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 05 14.10 12.3 mv AC Viens Mail(rw) 1993 05 14.14 12.05 C TB Ferguson USA-OH Mail(rw) 1993 05 14.15 12.6 mv A2 Flynn, E. M. 25-cm refl. Mail(grl) 1993 05 14.180 12.6 mv A2 Hornby, P. Mail(gmh) 1993 05 14.25 12.4 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 05 14.3 13.59 U *Richmond C News 1993 05 14.3 13.59 B *Richmond C News 1993 05 14.3 12.14 V *Richmond C News 1993 05 14.3 11.52 R C *Richmond C News 1993 05 14.3 11.16 I C *Richmond C News 1993 05 14.3 13.47 B Richmond News 1993 05 14.3 12.27 V Richmond News 1993 05 14.3 11.59 R C Richmond News 1993 05 14.3 11.25 I C Richmond News 1993 05 14.374 12.6 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 14.521 12.4 mv TB Yamada, M. 20-cm SCT Mail(kat) 1993 05 14.566 12.22 V HC Ohkura, N. and 35-cm SCT Mail(kat) 1993 05 14.566 &1 Ohshima, O. 1993 05 14.566 13.46 B HC Ohkura, N. and 35-cm SCT Mail(kat) 1993 05 14.566 &1 Ohshima, O. 1993 05 14.608 12.2 mv TB Sugai, H. 30-cm refl. Mail(kat) 1993 05 14.8 12.6 mv *Pietz, J. Mail(jah) 1993 05 14.875 12.3 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 05 14.892 12.5 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 05 14.9 12.8 mv Vanmunster, T. 35-cm f/5 refl. Mail(yam) 1993 05 14.90 14.43 U *Gonzales LaPalma Mail(rw) 1993 05 14.90 13.51 B *Gonzales LaPalma Mail(rw) 1993 05 14.90 12.26 V *Gonzales LaPalma Mail(rw) 1993 05 14.90 11.56 R J *Gonzales LaPalma Mail(rw) 1993 05 14.90 11.28 I J *Gonzales LaPalma Mail(rw) 1993 05 14.906 12.5 mv TA Day, J. Mail(gmh) 1993 05 14.908 12.6 mv TA Jones, M. Mail(gmh) 1993 05 14.913 12.7 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 14.927 12.4 mv TA Taylor, M. Mail(gmh) 1993 05 14.935 12.7 mv TA Worraker, W. Mail(gmh) 1993 05 14.951 12.9 mv TA Girard, P. Mail(gmh) 1993 05 15.0 12.28 V C *Prugniel Mail(gav) 1993 05 15.0 13.59 B C *Prugniel Mail(gav) 1993 05 15.0 11.67 R C *Prugniel Mail(gav) 1993 05 15.0 11.34 I C *Prugniel Mail(gav) 1993 05 15.03 12.28 V *Herbst Mail(gav) 1993 05 15.03 13.60 B *Herbst Mail(gav) 1993 05 15.03 11.65 R C *Herbst Mail(gav) 1993 05 15.03 11.31 I C *Herbst Mail(gav) 1993 05 15.08 12.3 mv AC Viens Can-PQ Mail(rw) 1993 05 15.115 12.6 mv A2 Dillon USA-TX Mail(rw) 1993 05 15.17 12.7 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 05 15.3 13.71 U *Richmond C News 1993 05 15.3 13.58 B *Richmond C News 1993 05 15.3 12.14 V *Richmond C News 1993 05 15.3 11.52 R C *Richmond C News 1993 05 15.3 11.14 I C *Richmond C News 1993 05 15.3 13.48 B Richmond News 1993 05 15.3 12.28 V Richmond News 1993 05 15.3 11.62 R C Richmond News 1993 05 15.3 11.28 I C Richmond News 1993 05 15.524 12.6 mv TB Hirosawa, K. 21-cm refl. Mail(kat) 1993 05 15.541 12.7 mv TB Sekino, Y. 28-cm refl. Mail(kat) 1993 05 15.558 12.5 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 15.8 12.8 mv *Pietz, J. Mail(jah) 1993 05 15.868 12.5 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 05 15.875 12.2 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 05 15.892 12.7 mv TA West, J. Mail(gmh) 1993 05 15.9 12.8 mv Vanmunster, T. 35-cm f/5 refl. Mail(yam) 1993 05 15.90 14.37 U *Castaneda LaPalma Mail(rw) 1993 05 15.90 13.54 B *Castaneda LaPalma Mail(rw) 1993 05 15.90 12.32 V *Castaneda LaPalma Mail(rw) 1993 05 15.90 11.60 R J *Castaneda LaPalma Mail(rw) 1993 05 15.90 11.30 I J *Castaneda LaPalma Mail(rw) 1993 05 15.911 12.5 mv TA Day, J. Mail(gmh) 1993 05 15.927 12.4 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 05 15.934 12.5 mv TA Hurst, G. Mail(gmh) 1993 05 15.944 12.7 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 15.958 12.9 mv TA Girard, P. Mail(gmh) 1993 05 16.0 12.29 V C *Prugniel Mail(gav) 1993 05 16.0 13.61 B C *Prugniel Mail(gav) 1993 05 16.0 11.69 R C *Prugniel Mail(gav) 1993 05 16.0 11.37 I C *Prugniel Mail(gav) 1993 05 16.03 12.29 V *Herbst Mail(gav) 1993 05 16.03 13.60 B *Herbst Mail(gav) 1993 05 16.03 11.65 R C *Herbst Mail(gav) 1993 05 16.03 11.32 I C *Herbst Mail(gav) 1993 05 16.041 12.4 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 05 16.11 11.92 C TB Ferguson USA-OH Mail(rw) 1993 05 16.14 12.6 mv A2 Flynn, E. M. 25-cm refl. Mail(grl) 1993 05 16.15 12.9 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 05 16.2 13.50 B Richmond News 1993 05 16.2 12.29 V Richmond News 1993 05 16.2 11.64 R C Richmond News 1993 05 16.2 11.30 I C Richmond News 1993 05 16.3 13.55 U *Richmond C News 1993 05 16.3 13.64 B *Richmond C News 1993 05 16.3 12.18 V *Richmond C News 1993 05 16.3 11.58 R C *Richmond C News 1993 05 16.3 11.18 I C *Richmond C News 1993 05 16.486 12.7 mv TB Makiguchi, N. 25-cm refl. Mail(kat) 1993 05 16.487 12.38 V HC Kato, M. 60-cm + CCD Mail(kat) 1993 05 16.495 12.5 mv TB Yamada, M. 16-cm refl. Mail(kat) 1993 05 16.510 11.51 I CHC Kato, M. 60-cm + CCD Mail(kat) 1993 05 16.585 12.7 mv TB Sekino, Y. 28-cm refl. Mail(kat) 1993 05 16.8 12.9 mv *Pietz, J. Mail(jah) 1993 05 16.854 12.2 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 05 16.865 12.5 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 05 16.87 12.39 V Mikuz, H. et al. Slovenia IAUC 5796 1993 05 16.87 13.47 B Mikuz, H. et al. Slovenia IAUC 5796 1993 05 16.87 11.65 R Mikuz, H. et al. Slovenia IAUC 5796 1993 05 16.87 11.21 I Mikuz, H. et al. Slovenia IAUC 5796 1993 05 16.88 13.58 B *Castaneda LaPalma Mail(rw) 1993 05 16.88 12.32 V *Castaneda LaPalma Mail(rw) 1993 05 16.88 11.31 I J *Castaneda LaPalma Mail(rw) 1993 05 16.896 12.3 C A2 Rodriguez, D. 20-cm f/4 refl.+ CCD Mail(grl) 1993 05 16.9 12.8 mv Vanmunster, T. 35-cm f/5 refl. Mail(yam) 1993 05 16.918 12.6 mv TA+ Dahle, H. 20.3-cm SCT 200x Mail(grl) 1993 05 16.936 12.7 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 16.949 12.6 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 17.0 12.33 V C *Prugniel Mail(gav) 1993 05 17.0 13.64 B C *Prugniel Mail(gav) 1993 05 17.0 11.72 R C *Prugniel Mail(gav) 1993 05 17.0 11.39 I C *Prugniel Mail(gav) 1993 05 17.074 12.6 mv TB Beauchamp Can-PQ Mail(rw) 1993 05 17.08 12.3 mv AC Viens Can-PQ Mail(rw) 1993 05 17.2 12.36 V *CfA Mail(gav) 1993 05 17.2 13.65 B *CfA Mail(gav) 1993 05 17.2 11.67 R C *CfA Mail(gav) 1993 05 17.2 11.31 I C *CfA Mail(gav) 1993 05 17.3 13.54 U HC *Richmond C News 1993 05 17.3 13.63 B HC *Richmond C News 1993 05 17.3 12.18 V HC *Richmond C News 1993 05 17.3 11.57 R CHC *Richmond C News 1993 05 17.3 11.24 I CHC *Richmond C News 1993 05 17.810 12.6 mv TA Tanti, T. Mail(gmh) 1993 05 17.875 12.6 mv A2 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 05 17.89 13.47 B Mikuz, H. et al. Slovenia IAUC 5809 1993 05 17.89 12.37 V Mikuz, H. et al. Slovenia IAUC 5809 1993 05 17.89 11.77 R Mikuz, H. et al. Slovenia IAUC 5809 1993 05 17.89 11.29 I Mikuz, H. et al. Slovenia IAUC 5809 1993 05 17.961 12.6 mv TA+ Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 05 17.962 12.8 mv TA Girard, P. Mail(gmh) 1993 05 17.981 12.8 mv TA+ Dahle, H. 20.3-cm SCT 200x Mail(grl) 1993 05 17.984 12.6 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 05 18.0 12.37 V C *Prugniel Mail(gav) 1993 05 18.0 13.68 B C *Prugniel Mail(gav) 1993 05 18.0 11.76 R C *Prugniel Mail(gav) 1993 05 18.0 11.41 I C *Prugniel Mail(gav) 1993 05 18.040 12.7 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 18.13 12.3 mv AC *Viens Can-PQ Mail(rw) 1993 05 18.548 12.6 mv TB Sekino, Y. 28-cm refl. Mail(kat) 1993 05 18.875 12.5 mv A2 Ripero, J. 33-cm refl. Mail(grl) 1993 05 18.896 12.6 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 05 18.906 12.5 mv TA Hurst, G. Mail(gmh) 1993 05 18.951 12.3 mv TA Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 05 18.957 12.9 mv TA Girard, P. Mail(gmh) 1993 05 18.975 12.6 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 05 18.977 12.5 mv TA Day, J. Mail(gmh) 1993 05 18.997 12.6 mv TA+ Granslo, B. H. 20.3-cm SCT 222x Mail(grl) 1993 05 19.0 12.36 V C *Prugniel Mail(gav) 1993 05 19.0 13.66 B C *Prugniel Mail(gav) 1993 05 19.0 11.78 R C *Prugniel Mail(gav) 1993 05 19.0 11.44 I C *Prugniel Mail(gav) 1993 05 19.012 12.7 mv TA+ Dahle, H. 20.3-cm SCT 200x Mail(grl) 1993 05 19.08 12.5 mv AC *Viens Can-PQ Mail(rw) 1993 05 19.142 12.7 mv TB Bryan, J. 25-cmrefl. 120x Mail(bry) 1993 05 19.19 12.7 mv A2 Flynn, E. M. 25-cm refl. Mail(grl) 1993 05 19.2 13.58 B HC Richmond News 1993 05 19.2 12.36 V HC Richmond News 1993 05 19.2 11.72 R CHC Richmond News 1993 05 19.2 11.38 I CHC Richmond News 1993 05 19.280 13.0 mv A2 Hornby, P. Mail(gmh) 1993 05 19.3 12.26 V HC *Richmond C News 1993 05 19.3 11.64 R CHC *Richmond C News 1993 05 19.3 11.24 I CHC *Richmond C News 1993 05 19.8 12.8 mv *Pietz, J. Mail(jah) 1993 05 19.874 12.7 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 19.875 12.5 mv A2 Ripero, J. 33-cm refl. Mail(grl) 1993 05 19.895 12.5 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 05 19.903 12.5 mv TA Hurst, G. Mail(gmh) 1993 05 19.918 12.6 mv TA Day, J. Mail(gmh) 1993 05 19.951 12.6 mv TA+ Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 05 19.984 12.7 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 19.985 12.7 mv TA Taylor, M. Mail(gmh) 1993 05 19.995 12.8 mv TA Taylor, M. Mail(gmh) 1993 05 19.996 12.6 mv TA Granslo, B. H. 20.3-cm SCT 222x Mail(grl) 1993 05 20.493 12.7 mv TB Sekino, Y. 28-cm refl. Mail(kat) 1993 05 20.493 12.8 mv TB Makiguchi, N. 25-cm refl. Mail(kat) 1993 05 20.503 12.5 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 20.63 13.90 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm Mail(zhe) 1993 05 20.63 13.65 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm Mail(zhe) 1993 05 20.63 12.33 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm Mail(zhe) 1993 05 20.63 11.58 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm Mail(zhe) 1993 05 20.63 11.18 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm Mail(zhe) 1993 05 20.810 12.6 mv TA Tanti, T. Mail(gmh) 1993 05 20.896 12.4 C A2 Rodriguez, D. 20-cm refl. + CCD Mail(grl) 1993 05 20.896 12.5 mv A2 Carvajal, J. 31-cm refl. Mail(grl) 1993 05 20.917 12.6 mv A2 Garcia, F. 25-cm refl. Mail(grl) 1993 05 20.940 12.8 mv TA+ Dahle, H. 20.3-cm SCT 200x Mail(grl) 1993 05 21.0 12.8 mv Vanmunster, T. 35-cm f/5 refl. Mail(yam) 1993 05 21.0 12.43 V C *Prugniel Mail(gav) 1993 05 21.0 13.73 B C *Prugniel Mail(gav) 1993 05 21.0 11.81 R C *Prugniel Mail(gav) 1993 05 21.0 11.47 I C *Prugniel Mail(gav) 1993 05 21.15 12.03 C TB Ferguson USA-OH Mail(rw) 1993 05 21.3 13.70 B HC *Richmond C News 1993 05 21.3 12.29 V HC *Richmond C News 1993 05 21.3 11.67 R CHC *Richmond C News 1993 05 21.3 11.29 I CHC *Richmond C News 1993 05 21.3 12.40 V HC Richmond News 1993 05 21.3 11.76 R CHC Richmond News 1993 05 21.3 11.41 I CHC Richmond News 1993 05 21.469 12.6 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 21.875 12.5 mv A2 Ripero, J. 33-cm refl. Mail(grl) 1993 05 21.896 12.8 mv TA West, J. Mail(gmh) 1993 05 21.896 12.6 mv A2 Garcia, F. 25-cm refl. Mail(grl) 1993 05 21.896 12.7 mv A2 Pujol, F. 31-cm refl. Mail(grl) 1993 05 21.9 13.1 mv Vanmunster, T. 35-cm f/5 refl. Mail(yam) 1993 05 21.9 12.9 mv *Pietz, J. Mail(jah) 1993 05 21.903 12.7 mv TA Hurst, G. Mail(gmh) 1993 05 21.924 12.7 mv TA Shanklin, J. Mail(gmh) 1993 05 21.936 12.6 mv TA Day, J. Mail(gmh) 1993 05 22.0 12.44 V C *Prugniel Mail(gav) 1993 05 22.0 13.72 B C *Prugniel Mail(gav) 1993 05 22.0 11.85 R C *Prugniel Mail(gav) 1993 05 22.0 11.51 I C *Prugniel Mail(gav) 1993 05 22.010 12.7 mv TA Zanotta, M. Mail(gmh) 1993 05 22.024 12.7 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 22.05 12.42 V *Herbst Mail(gav) 1993 05 22.05 13.70 B *Herbst Mail(gav) 1993 05 22.05 11.80 R C *Herbst Mail(gav) 1993 05 22.05 11.45 I C *Herbst Mail(gav) 1993 05 22.081 12.7 mv TB Beauchamp Can-PQ Mail(rw) 1993 05 22.10 12.7 mv A2 Flynn, E. M. 25-cm refl. Mail(grl) 1993 05 22.12 13.0 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 05 22.3 13.80 U HC *Richmond C News 1993 05 22.3 13.70 B HC *Richmond C News 1993 05 22.3 12.33 V HC *Richmond C News 1993 05 22.3 11.72 R CHC *Richmond C News 1993 05 22.3 11.27 I CHC *Richmond C News 1993 05 22.3 13.57 B HC Richmond News 1993 05 22.3 12.43 V HC Richmond News 1993 05 22.3 11.79 R CHC Richmond News 1993 05 22.3 11.43 I CHC Richmond News 1993 05 22.88 14.41 U *Young LaPalma Mail(rw) 1993 05 22.88 13.63 B *Young LaPalma Mail(rw) 1993 05 22.88 12.45 V *Young LaPalma Mail(rw) 1993 05 22.88 11.76 R J *Young LaPalma Mail(rw) 1993 05 22.88 11.46 I J *Young LaPalma Mail(rw) 1993 05 22.896 12.6 mv A2 Ripero, J. 33-cm refl. Mail(grl) 1993 05 22.9 13.1 mv Vanmunster, T. 35-cm f/5 refl. Mail(yam) 1993 05 22.931 12.7 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 22.94 13.67 B Mikuz, H. et al. Slovenia IAUC 5809 1993 05 22.94 12.43 V Mikuz, H. et al. Slovenia IAUC 5809 1993 05 22.94 11.83 R Mikuz, H. et al. Slovenia IAUC 5809 1993 05 22.94 11.47 I Mikuz, H. et al. Slovenia IAUC 5809 1993 05 22.968 12.6 mv TA+ Granslo, B. H. 20.3-cm SCT 222x Mail(grl) 1993 05 22.972 12.9 mv TA+ Dahle, H. 20.3-cm SCT 200x Mail(grl) 1993 05 23.0 12.46 V C *Prugniel Mail(gav) 1993 05 23.0 13.72 B C *Prugniel Mail(gav) 1993 05 23.0 11.86 R C *Prugniel Mail(gav) 1993 05 23.0 11.53 I C *Prugniel Mail(gav) 1993 05 23.08 12.5 mv AC *Viens Can-PQ Mail(rw) 1993 05 23.083 12.7 mv TB Kratz, D. 31.8-cm refl. News 1993 05 23.3 13.85 U *Richmond C News 1993 05 23.3 13.72 B *Richmond C News 1993 05 23.3 12.33 V *Richmond C News 1993 05 23.3 11.76 R J *Richmond C News 1993 05 23.3 11.31 I J *Richmond C News 1993 05 23.462 12.46 V HC Kato, T. 60-cm refl. Mail(kat) 1993 05 23.477 12.26 C TB *Fujita, Y. 60-cm refl. + CCD Mail(kat) 1993 05 23.485 11.75 I CHC Kato, T. 60-cm refl. Mail(kat) 1993 05 23.486 12.8 mv TB Makiguchi, N. 25-cm refl. Mail(kat) 1993 05 23.508 12.6 mv TB Yamada, M. 16-cm refl. Mail(kat) 1993 05 23.527 13.84 B HC Kato, T. 60-cm refl. Mail(kat) 1993 05 23.528 12.6 mv TB Yamada, M. 16-cm refl. Mail(kat) 1993 05 23.569 12.48 V HC Kato, T. 60-cm refl. Mail(kat) 1993 05 23.8 12.9 mv *Pietz, J. Mail(jah) 1993 05 23.810 12.6 mv TA Tanti, T. Mail(gmh) 1993 05 23.889 12.7 mv A2 Garcia, F. 25-cm refl. Mail(grl) 1993 05 23.935 12.7 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 23.941 12.8: mv TA+ Dahle, H. 20.3-cm SCT 200x Mail(grl) 1993 05 24.0 12.48 V C *Prugniel Mail(gav) 1993 05 24.0 13.75 B C *Prugniel Mail(gav) 1993 05 24.0 11.90 R C *Prugniel Mail(gav) 1993 05 24.0 11.55 I C *Prugniel Mail(gav) 1993 05 24.096 12.7 mv TB Beauchamp Can-PQ Mail(rw) 1993 05 24.8 12.9 mv *Pietz, J. Mail(jah) 1993 05 24.9 13.1 mv Vanmunster, T. 35-cm f/5 refl. Mail(yam) 1993 05 24.91 14.44 U *Lucey LaPalma Mail(rw) 1993 05 24.91 13.71 B *Lucey LaPalma Mail(rw) 1993 05 24.91 12.48 V *Lucey LaPalma Mail(rw) 1993 05 24.91 11.81 R J *Lucey LaPalma Mail(rw) 1993 05 24.91 11.49 I J *Lucey LaPalma Mail(rw) 1993 05 24.905 12.7 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 25.0 12.50 V C *Prugniel Mail(gav) 1993 05 25.0 13.75 B C *Prugniel Mail(gav) 1993 05 25.0 11.91 R C *Prugniel Mail(gav) 1993 05 25.0 11.55 I C *Prugniel Mail(gav) 1993 05 25.461 12.47 V HC Kato, T. 60-cm refl. Mail(kat) 1993 05 25.479 12.8 mv TB Makiguchi, N. 25-cm refl. Mail(kat) 1993 05 25.482 11.79 I CHC Kato, T. 60-cm refl. Mail(kat) 1993 05 25.512 12.7 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 25.523 13.86 B HC Kato, T. 60-cm refl. Mail(kat) 1993 05 25.782 14.56 U Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 25.782 13.87 B Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 25.782 12.54 V Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 25.782 11.69 R J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 25.782 11.13 I J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 25.88 14.43 U *Lucay LaPalma Mail(rw) 1993 05 25.88 13.70 B *Lucay LaPalma Mail(rw) 1993 05 25.88 12.49 V *Lucay LaPalma Mail(rw) 1993 05 25.88 11.84 R J *Lucay LaPalma Mail(rw) 1993 05 25.88 11.52 I J *Lucay LaPalma Mail(rw) 1993 05 25.908 12.7 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 25.908 12.7 mv TB Korth, S. 36-cm f/11 refl. Mail(grl) 1993 05 26.0 12.50 V C *Prugniel Mail(gav) 1993 05 26.0 13.75 B C *Prugniel Mail(gav) 1993 05 26.0 11.93 R C *Prugniel Mail(gav) 1993 05 26.0 11.60 I C *Prugniel Mail(gav) 1993 05 26.17 13.1 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 05 26.462 12.49 V HC Kato, T. 60-cm refl. Mail(kat) 1993 05 26.468 12.7 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 26.483 11.80 I CHC Kato, T. 60-cm refl. Mail(kat) 1993 05 26.530 13.86 B HC Kato, T. 60-cm refl. Mail(kat) 1993 05 26.553 12.7 mv TB Yamada, M. 35.5-cm refl. Mail(kat) 1993 05 27.14 12.8 mv A2 Flynn, E. M. 25-cm refl. Mail(grl) 1993 05 27.15 12.36 C TB *Ferguson USA-OH Mail(rw) 1993 05 27.458 12.8 mv TB Makiguchi, N. 25-cm refl. Mail(kat) 1993 05 27.488 12.7 mv TB Yamada, M. 35.5-cm refl. Mail(kat) 1993 05 27.784 14.64 U Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 27.784 13.91 B Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 27.784 12.57 V Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 27.784 11.74 R J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 27.784 11.16 I J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 27.896 12.7 mv A2 Ripero, J. 33-cm refl. Mail(grl) 1993 05 27.979 12.7 mv A2 Garcia, F. 25-cm refl. Mail(grl) 1993 05 28.0 12.55 V C *Prugniel Mail(gav) 1993 05 28.0 13.75 B C *Prugniel Mail(gav) 1993 05 28.0 11.97 R C *Prugniel Mail(gav) 1993 05 28.0 11.61 I C *Prugniel Mail(gav) 1993 05 28.09 12.7 mv AC *Viens Can-PQ Mail(rw) 1993 05 28.094 12.7 mv TB Kratz, D. 20.3-cm refl. News 1993 05 28.2 13.73 B *Richmond C News 1993 05 28.2 12.42 V *Richmond C News 1993 05 28.2 11.86 R C *Richmond C News 1993 05 28.2 11.41 I C *Richmond C News 1993 05 28.455 12.45:V HC Kato, T. 60-cm refl. Mail(kat) 1993 05 28.464 12.6 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 05 28.475 11.92:I CHC Kato, T. 60-cm refl. Mail(kat) 1993 05 28.783 14.64 U Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 28.783 14.02 B Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 28.783 12.72 V Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 28.783 11.90 R J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 28.783 11.30 I J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 28.896 12.5 C A2 Rodriguez, D. 20-cm refl. + CCD Mail(grl) 1993 05 28.896 12.6 mv A2 Ripero, J. 33-cm refl. Mail(grl) 1993 05 28.896 12.7 mv A2 Pujol, F. 31-cm refl. Mail(grl) 1993 05 28.909 12.7 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 05 28.947 12.7 mv TA Shanklin, J. Mail(gmh) 1993 05 28.947 12.7 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 28.993 12.8 mv TA Day, J. Mail(gmh) 1993 05 29.0 13.3 mv Vanmunster, T. 35-cm f/5 refl. Mail(grl) 1993 05 29.0 12.57 V C *Prugniel Mail(gav) 1993 05 29.0 13.80 B C *Prugniel Mail(gav) 1993 05 29.0 12.00 R C *Prugniel Mail(gav) 1993 05 29.0 11.64 I C *Prugniel Mail(gav) 1993 05 29.031 12.7 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 05 29.3 12.43 V *Richmond C News 1993 05 29.3 11.87 R C *Richmond C News 1993 05 29.3 11.46 I C *Richmond C News 1993 05 29.890 12.7 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 29.9 13.0 mv *Pietz, J. Mail(jah) 1993 05 29.9 12.58 V C *Prugniel Mail(gav) 1993 05 29.9 13.82 B C *Prugniel Mail(gav) 1993 05 29.9 12.02 R C *Prugniel Mail(gav) 1993 05 29.9 11.66 I C *Prugniel Mail(gav) 1993 05 30.790 14.59 U Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 30.790 13.93 B Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 30.790 12.63 V Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 30.790 11.79 R J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 30.790 11.19 I J Shakhovskoy, N. M. Crimea 1.25-m News(bos) 1993 05 30.896 12.7 mv A2 Ripero, J. 33-cm refl. Mail(grl) 1993 05 30.9 13.1 mv *Pietz, J. Mail(jah) 1993 05 30.905 12.7 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 31.0 12.61 V C *Prugniel Mail(gav) 1993 05 31.0 13.81 B C *Prugniel Mail(gav) 1993 05 31.0 12.05 R C *Prugniel Mail(gav) 1993 05 31.0 11.68 I C *Prugniel Mail(gav) 1993 05 31.083 12.8 mv TB Kratz, D. 20.3-cm refl. News 1993 05 31.09 12.7 mv TB *Beauchamp Can-PQ Mail(rw) 1993 05 31.09 12.7 mv AC *Viens Can-PQ Mail(rw) 1993 05 31.458 12.57:V HC Kato, T. 60-cm refl. Mail(kat) 1993 05 31.479 13.84:B HC Kato, T. 60-cm refl. Mail(kat) 1993 05 31.509 11.74:I CHC Kato, T. 60-cm refl. Mail(kat) 1993 05 31.792 14.49 U Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 05 31.792 13.91 B Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 05 31.792 12.63 V Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 05 31.792 11.85 R J Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 05 31.792 11.21 I J Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 05 31.898 12.8 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 05 31.93 13.45 B Mikuz, H. et al. IAUC 5812 1993 05 31.93 12.53 V Mikuz, H. et al. IAUC 5812 1993 05 31.93 11.96 R Mikuz, H. et al. IAUC 5812 1993 05 31.93 11.65 I Mikuz, H. et al. IAUC 5812 1993 06 01.0 12.62 V C *Prugniel Mail(gav) 1993 06 01.0 13.81 B C *Prugniel Mail(gav) 1993 06 01.0 12.06 R C *Prugniel Mail(gav) 1993 06 01.0 11.70 I C *Prugniel Mail(gav) 1993 06 01.457 12.64 V HC Kato, T. 60-cm refl. Mail(kat) 1993 06 01.465 12.8 mv TB Makiguchi, N. 25-cm refl. Mail(kat) 1993 06 01.513 11.80 I HC Kato, T. 60-cm refl. Mail(kat) 1993 06 01.88 14.13 B Mikuz, H. et al. IAUC 5812 1993 06 01.88 12.62 V Mikuz, H. et al. IAUC 5812 1993 06 01.88 12.03 R Mikuz, H. et al. IAUC 5812 1993 06 01.88 11.75 I Mikuz, H. et al. IAUC 5812 1993 06 01.882 12.8 mv A2 Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 06 01.896 12.7 mv A2 Ripero, J. 33-cm refl. Mail(grl) 1993 06 01.927 12.7 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 06 02.0 12.64 V C *Prugniel Mail(gav) 1993 06 02.0 13.81 B C *Prugniel Mail(gav) 1993 06 02.0 12.08 R C *Prugniel Mail(gav) 1993 06 02.0 11.76 I C *Prugniel Mail(gav) 1993 06 02.083 12.8 mv TB Kratz, D. 20.3-cm refl. News 1993 06 02.530 12.9: mv TB Yamada, M. 16-cm refl. Mail(kat) 1993 06 02.794 14.60 U Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 02.794 13.92 B Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 02.794 12.66 V Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 02.794 11.87 R J Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 02.794 11.23 I J Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 02.896 12.7 mv A2 Ripero, J. 33-cm refl. Mail(grl) 1993 06 02.948 12.7 mv A2 Garcia, F. 25-cm refl. Mail(grl) 1993 06 03.0 12.66 V C *Prigniel Mail(gav) 1993 06 03.0 13.82 B C *Prigniel Mail(gav) 1993 06 03.0 12.11 R C *Prigniel Mail(gav) 1993 06 03.0 11.74 I C *Prigniel Mail(gav) 1993 06 03.118 12.8 mv A2 Dillon, W. G. 28-cm SCT Mail 1993 06 03.3 13.82 B *Richmond C News 1993 06 03.3 12.53 V *Richmond C News 1993 06 03.3 11.92 R C *Richmond C News 1993 06 03.3 11.53 I C *Richmond C News 1993 06 03.3 14.00 U *Richmond News 1993 06 03.3 13.71 B *Richmond News 1993 06 03.3 12.64 V *Richmond News 1993 06 03.3 12.02 R C *Richmond News 1993 06 03.3 11.67 I C *Richmond News 1993 06 03.796 14.56 U Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 03.796 13.96 B Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 03.796 12.70 V Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 03.796 11.91 R J Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 03.796 11.26 I J Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 03.896 12.7 mv A2 Ripero, J. 33-cm refl. Mail(grl) 1993 06 03.972 12.7 mv A2 Garcia, F. 25-cm refl. Mail(grl) 1993 06 04.794 14.52 U Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 04.794 13.95 B Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 04.794 12.72 V Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 04.794 11.91 R J Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 04.794 11.29 I J Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 04.896 12.7 mv A2 Ripero, J. 33-cm refl. Mail(grl) 1993 06 04.906 12.7 C A2 Rodriguez, D. 20-cm refl. + CCD Mail(grl) 1993 06 04.923 12.9 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 06 05.11 12.8 mv TB *Beauchamp Can-PQ Mail(rw) 1993 06 05.90 13.69 B Mikuz, H. et al. IAUC 5812 1993 06 05.90 12.67 V Mikuz, H. et al. IAUC 5812 1993 06 05.90 12.10 R Mikuz, H. et al. IAUC 5812 1993 06 05.90 11.70 I Mikuz, H. et al. IAUC 5812 1993 06 05.930 12.8 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 06 06.790 14.51 U Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 06.790 13.97 B Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 06.790 12.72 V Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 06.790 11.97 R J Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 06.790 11.31 I J Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 06.920 12.8 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 06 07.083 12.8 mv TB Kratz, D. 20.3-cm refl. 79x News 1993 06 07.834 14.47 U Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 07.834 13.98 B Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 07.834 12.80 V Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 07.834 12.04 R J Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 07.834 11.40 I J Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 07.896 12.7 mv A2 *Ripero, J. 33-cm f/4.5 refl. Mail(grl) 1993 06 07.927 12.8 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 06 08.455 12.8 mv TB *Makiguchi, N. 25-cm refl. Mail(kat) 1993 06 08.2 13.90 U *Richmond C News 1993 06 08.2 13.86 B *Richmond C News 1993 06 08.2 12.62 V *Richmond C News 1993 06 08.2 12.03 R C *Richmond C News 1993 06 08.2 11.65 I C *Richmond C News 1993 06 08.455 12.8 mv TB Makiguchi, N. 25-cm refl. Mail(kat) 1993 06 08.9 13.4 mv Vanmunster, T. 35-cm refl. Mail(yam) 1993 06 08.906 12.7 mv A2 *Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 06 08.906 &1 * Time is revised from 1993 06 08.89 Mail(grl) 1993 06 09.0 12.76 V C *Prugniel Mail(gav) 1993 06 09.0 13.88 B C *Prugniel Mail(gav) 1993 06 09.0 12.23 R C *Prugniel Mail(gav) 1993 06 09.0 11.84 I C *Prugniel Mail(gav) 1993 06 09.2 14.06 U *Richmond C News 1993 06 09.2 13.85 B *Richmond C News 1993 06 09.2 12.64 V *Richmond C News 1993 06 09.2 12.09 R C *Richmond C News 1993 06 09.2 11.66 I C *Richmond C News 1993 06 09.3 14.21 U *Richmond News 1993 06 09.3 13.78 B *Richmond News 1993 06 09.3 12.75 V *Richmond News 1993 06 09.3 12.18 R C *Richmond News 1993 06 09.3 11.78 I C *Richmond News 1993 06 09.797 14.49 U Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 09.797 14.00 B Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 09.797 12.78 V Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 09.797 12.03 R J Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 09.797 11.36 I J Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 10.797 14.51 U Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 10.797 14.00 B Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 10.797 12.82 V Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 10.797 12.06 R J Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 10.797 11.39 I J Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 10.896 13.1 mv A2 Ripero, J. 33-cm f/4.5 refl. Mail(grl) 1993 06 11. 13.83 B *Tweedy et al. IAUC 5817 1993 06 11. 12.79 V *Tweedy et al. IAUC 5817 1993 06 11. 12.23 R *Tweedy et al. IAUC 5817 1993 06 11. 11.83 I *Tweedy et al. IAUC 5817 1993 06 11.3 13.96 U *Richmond C News 1993 06 11.3 13.88 B *Richmond C News 1993 06 11.3 12.68 V *Richmond C News 1993 06 11.3 12.14 R C *Richmond C News 1993 06 11.3 11.66 I C *Richmond C News 1993 06 11.477 12.65 C TB *Fujita, Y. 60-cm refl. + CCD Mail(kat) 1993 06 11.552 12.9 mv TB Takahashi, S. 60-cm refl. Mail(kat) 1993 06 11.614 12.9 mv TB Kato, T. 20-cm refl. Mail(kat) 1993 06 11.796 14.53 U *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 11.796 14.01 B *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 11.796 12.82 V *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 11.796 12.06 R J *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 11.796 11.40 I J *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 11.896 13.0 mv A2 *Carvajal, J. 31-cm f/4.5 refl. Mail(grl) 1993 06 11.896 13.1 mv A2 *Ripero, J. 33-cm f/4.5 refl. Mail(grl) 1993 06 11.917 12.9 mv A2 *Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 06 12.0 12.82 V C *Prugniel Mail(gav) 1993 06 12.0 13.91 B C *Prugniel Mail(gav) 1993 06 12.0 12.30 R C *Prugniel Mail(gav) 1993 06 12.0 11.91 I C *Prugniel Mail(gav) 1993 06 12.2 13.94 U *Richmond C News 1993 06 12.2 13.88 B *Richmond C News 1993 06 12.2 12.69 V *Richmond C News 1993 06 12.2 12.13 R C *Richmond C News 1993 06 12.2 11.70 I C *Richmond C News 1993 06 12.796 14.52 U *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 12.796 14.00 B *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 12.796 12.83 V *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 12.796 12.10 R J *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 12.796 11.40 I J *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 12.896 13.1 mv A2 *Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 06 12.896 13.1 mv A2 *Ripero, J. 33-cm f/4.5 refl. Mail(grl) 1993 06 12.917 13.1 mv A2 *Carvajal, J. 31-cm f/4.5 refl. Mail(grl) 1993 06 12.917 13.0 mv A2 *Pujol, F. 31-cm f/5 refl. Mail(grl) 1993 06 12.917 13.1 mv A2 *Rodriguez, D. 20-cm refl. Mail(grl) 1993 06 13.0 12.83 V C *Prugniel Mail(gav) 1993 06 13.0 13.93 B C *Prugniel Mail(gav) 1993 06 13.0 12.32 R C *Prugniel Mail(gav) 1993 06 13.0 11.93 I C *Prugniel Mail(gav) 1993 06 13.2 13.91 U *Richmond C News 1993 06 13.2 13.89 B *Richmond C News 1993 06 13.2 12.71 V *Richmond C News 1993 06 13.2 12.15 R C *Richmond C News 1993 06 13.2 11.74 I C *Richmond C News 1993 06 13.798 14.53 U *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 13.798 14.02 B *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 13.798 12.86 V *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 13.798 12.10 R J *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 13.798 11.39 I J *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 13.896 13.2 mv A2 *Ripero, J. 33-cm f/4.5 refl. Mail(grl) 1993 06 13.917 13.1 mv A2 *Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 06 14.0 12.85 V C *Prugniel Mail(gav) 1993 06 14.0 13.95 B C *Prugniel Mail(gav) 1993 06 14.0 12.34 R C *Prugniel Mail(gav) 1993 06 14.0 11.94 I C *Prugniel Mail(gav) 1993 06 14.3 13.89 U *Richmond C News 1993 06 14.3 13.89 B *Richmond C News 1993 06 14.3 12.71 V *Richmond C News 1993 06 14.3 12.18 R C *Richmond C News 1993 06 14.3 11.73 I C *Richmond C News 1993 06 14.896 13.1 mv A2 *Ripero, J. 33-cm f/4.5 refl. Mail(grl) 1993 06 14.906 13.1 mv A2 *Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 06 15.013 12.8 mv TA *Poyner, G. 40-cm refl. Mail 1993 06 16.0 12.88 V C *Prugniel Mail(gav) 1993 06 16.0 13.94 B C *Prugniel Mail(gav) 1993 06 16.0 12.39 R C *Prugniel Mail(gav) 1993 06 16.0 11.99 I C *Prugniel Mail(gav) 1993 06 16.0 13.1 mv *Vanmunster, T. 35-cm refl. Mail(yam) 1993 06 16.3 13.91 U *Richmond C News 1993 06 16.3 13.92 B *Richmond C News 1993 06 16.3 12.78 V *Richmond C News 1993 06 16.3 12.22 R C *Richmond C News 1993 06 16.3 11.81 I C *Richmond C News 1993 06 17.0 12.90 V C *Prugniel Mail(gav) 1993 06 17.0 13.95 B C *Prugniel Mail(gav) 1993 06 17.0 12.40 R C *Prugniel Mail(gav) 1993 06 17.0 12.00 I C *Prugniel Mail(gav) 1993 06 17.104 12.9 mv TB *Kratz, D. 20.3-cm refl. 79x Mail 1993 06 17.471 12.8 mv TB *Takahashi, S. 60-cm refl. Mail(kat) 1993 06 17.9 13.1 mv *Vanmunster, T. 35-cm refl. Mail(yam) 1993 06 18.0 12.91 V C *Prugniel Mail(gav) 1993 06 18.0 13.95 B C *Prugniel Mail(gav) 1993 06 18.0 12.43 R C *Prugniel Mail(gav) 1993 06 18.0 12.02 I C *Prugniel Mail(gav) 1993 06 18.3 13.94 U *Richmond C News 1993 06 18.3 13.93 B *Richmond C News 1993 06 18.3 12.80 V *Richmond C News 1993 06 18.3 12.21 R C *Richmond C News 1993 06 18.3 11.87 I C *Richmond C News 1993 06 19.3 13.85 U *Richmond C News 1993 06 19.3 13.97 B *Richmond C News 1993 06 19.3 12.83 V *Richmond C News 1993 06 19.3 12.25 R C *Richmond C News 1993 06 19.3 11.91 I C *Richmond C News 1993 06 19.3 14.34 U *Richmond News 1993 06 19.3 13.85 B *Richmond News 1993 06 19.3 12.84 V *Richmond News 1993 06 19.3 12.32 R C *Richmond News 1993 06 19.3 11.85 I C *Richmond News 1993 06 19.972 12.8 mv TA *Poyner, G. 22-cm refl. Mail(poy) 1993 06 20.800 14.47 U *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 20.800 14.05 B *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 20.800 12.96 V *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 20.800 12.27 R J *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 20.800 11.53 I J *Shakovskoy; Efimov 1.25-m, Crimea Obs. News(bos) 1993 06 20.951 13.0 mv TA *Poyner, G. 22-cm refl. Mail(poy) 1993 06 21.9 13.2 mv *Vanmunster, T. 35-cm refl. Mail(yam) 1993 06 23.083 13.1 mv TB *Kratz, D. 20-cm refl. News 1993 06 23.930 13.0 mv TA *Poyner, G. 22-cm refl. Mail(poy) 1993 06 24.083 13.1 mv TB *Kratz, D. 20-cm refl. News 1993 06 24.972 13.0 mv TA *Poyner, G. 22-cm refl. Mail(poy) 1993 06 25.094 13.1 mv TB *Kratz, D. 20-cm refl. News 1993 06 27.008 13.1 mv TA *Poyner, G. 22-cm refl. Mail(poy) 1993 06 27.944 13.1 mv TA *Poyner, G. 22-cm refl. Mail(poy) 2000--------------------------------------------------------------------------- 2001 2002 Remarks: 2003 #1 "Zero-point" correction using Corwin's star B was applied. 2004 (see IAUC 5770) 2005 #2 Same as #1, previously noted as "Corrected mag" 2006 #3 Original data IAUC 5774; correction IAUC 5777; 2007 + revised data privately communicated 2010 2100 == differential photometry without photoelectrically measured 2101 comparisons == 2102 (Journal of observations) 2103 2104 from Braeside Observatory: 2105 (braeside@naucse.cse.nau.edu) 2106 2107 Apr. 15.398 - 15.420 UT 2108 18.199 - 15.239 UT 2109 19.171 - 19.366 UT 2110 * R. Pressberger and H. M. Maitzen Apr. 27.89 - May 17.89 2111 * Stroemgren vbg1g2y photometry (IAUC 5816) 2112 * R. Pressberger and H. M. Maitzen Jun. 1.89 2113 * Stroemgren vbg1g2y photometry (IAUC 5822) 2990 2991 Compiled by Taichi Kato (Kyoto University) 37) From ALEX@BKYAST.BERKELEY.EDU Wed Jun 30 18:40:45 1993 Subject: SN 1993J update, part 1. 6-30-93 Dear lovers of SN 1993J: SN 1993J is developing nicely. The spectrum shows extremely strong Ca II near-IR triplet emission, and nebular lines such as [O I] and [Ca II] are becoming prominent, as expected. The next few months should be very interesting. However, the supernova is getting hard to observe from many northern hemisphere observatories, despite being circumpolar, due to hour angle limits. There is a real fear that we will not get sufficient coverage during the next few months, which are very important for a complete analysis. This is especially the case for spectroscopy; some small telescopes that can point well below the pole have CCD cameras attached to them, but spectrographs on these telescopes are less frequent. If you have a telescope that can observe the supernova during the next few months with no special effort, you should certainly try to get data. In those cases where telescope limits exist, I would like to urge you to look into the possibility of "breaking the rules" in creative ways. My group will try to do this at Lick Observatory, although success is not guaranteed and in any case having more data would be useful. Good luck! Alex Filippenko PS. I append the first half of Taichi Kato's most recent compilation of SN 1993J photometry. The second half will follow in the next message. The table is too long to send in its entirety to some locations. **** From: LBL::"tkato@kusastro.kyoto-u.ac.jp" 29-JUN-1993 22:06:45.43 To: BKYIM::ALEX Subj: SN1993J photometry update (6/29) 0001 0002 SN1993J photometry update 0003 0004 Updated list of observations obtained by June 29. 0005 0006 Magnitude systems (MS): 0007 U, B, V Johnson system 0008 R, I designated by J (Johnson) and C (Kron-Cousins) 0009 J, H, K infrared systems 0010 g, r Gunn g,r 0011 mv visual (close to V) 0012 p photographic (miscellaneous materials) 0013 C unfiltered CCD 0014 0015 Sequences: 0016 TB Thompson-Bryan Supernova Search Chart 0017 TA The Astronomer/BAA sequence (using mv magnitudes 0018 from AAVSO and V magnitudes from Sandage and Corwin) 0019 GS Guide Star Catalog 0020 T1 AAVSO version of Thompson-Bryan chart 0021 (supplied with AAVSO Alert Notice 169) 00211 A1 AAVSO Supernova Search Chart for NGC 3031 - Version 1 00212 (supplied with AAVSO Alert Notice 170) 00213 A2 AAVSO Supernova Search Chart for NGC 3031 - Version 2 00214 (supplied with AAVSO Alert Notice 171) 0022 AC AAVSO chart 0023 S SAO Star Catalog 0024 HC photoelectric sequence by H. Corwin 0025 MR M. Richmond's comparison star "A" (V near 11.40) 0026 NP The North Polar Sequence 0027 0028 A plus sign indicate that comparisons from several sources 0029 were used, the chief reference is given. 0030 0031 Numerous data are included from following sources. 0032 Bjorn H. Granslo (bgranslo@astro.uio.no) Mail(grl) 0033 Gerard de Vaucouleurs (gav@astro.as.utexas.edu) Mail(gav) 0034 Taichi Kato (tkato@kusastro.kyoto-u.ac.jp) Mail(kat) 0035 Ralph A.M.J. Wijers (rw@ourania.Princeton.EDU) News(rw) 0036 The Astronomer/BAA visual database 0037 (GMH@ASTROPHYSICS.STARLINK.RUTHERFORD.AC.UK Nova(gmh) 0038 Mike Boschat (andromed@Hail.ATM.Dal.Ca) News(bos) 0039 Hans Bengtsson (hanben@saaf.se) Mail(ben) 00391 Jost Jahn (j.jahn@abbs.hanse.de) Mail(jah) 00392 Yoshiro Yamada (yamada@ysc.go.jp) Mail(yam) 0040 0041 New entries and revisions are marked with "*". 0042 0043 Many thanks to observers for sending their observations! 0044 I especially would like to thank Bjorn H. Granslo 0045 (bgranslo@astro.uio.no) for valuable information 0046 in preparing this report. 0047 0048 From this report, line numbers are given for the header and remarks 0049 for sorting convention. Lines starting with "0" are headers, "1" 0050 for the data, "2" for the remarks. 0051 Overflown data are marked with "&" at the column 16. 0052 0053 You can add new entries to this table and use UNIX sort to 0054 rearrange it. Data lines can be extracted using grep -v "&" etc. 0055 0500--------------------------------------------------------------------------- 0501 YYYY+ 0502 MM DD.DDD MAGN MS SEQ OBSERVER NOTES SOURCE 0503--------------------------------------------------------------------------- 0504 1982 03 21(-23) 20.8 V Humpreys, R. 4-m plate IAUC 5739 1982 03 21(-23) 19.9 R Humpreys, R. 4-m plate IAUC 5739 1982 03 21(-23) 21.4 B Humpreys, R. 4-m plate IAUC 5739 1982 03 21(-23) 21.7 U Humpreys, R. 4-m plate IAUC 5739 1985 01 21. 21 r Cohen, J. G. 1.5-m + CCD IAUC 5742 1985 01 21. 21.9 g Cohen, J. G. 1.5-m + CCD IAUC 5742 1985 03 21. 20.7 V Humpreys, R. 4-m plate Nova 1985 03 21. 19.9 R Humpreys, R. 4-m plate Nova 1985 03 21. 21.8 B Humpreys, R. 4-m plate Nova 1990 02 ??(-03) 19.3 R Tomaney, A and McDonald 2.1-m IAUC 5771 1990 02 ??(-03)&1 Crotts, A. H-alpha image 1990 02 ??(-03) 21.2 B Tomaney, A and McDonald 2.1-m IAUC 5771 1990 02 ??(-03)&1 Crotts, A. 1" aperture 1990 03 ?? 20.0 V Perelmuter KPNO, CCD IAUC 5736 1990 03 ?? 19.3 R Perelmuter KPNO, CCD IAUC 5736 1992 01 24. 19.7: V Magnier, E. Hiltner 2.4-m, CCD IAUC 5741 1992 01 24. 18.9: R Magnier, E. Hiltner 2.4-m, CCD IAUC 5741 1992 05 01. 20.88 V Blakeslee, J. and 2.4-m + Loral CCD IAUC 5758 1992 05 01. &1 Tonry, J. 1992 05 01. 20.79 V Blakeskee, J. and 2.4-m + CCD IAUC 5758 1992 05 01. &1 Tonry, J. 1992 05 01. 19.44 I C Blakeskee, J. and 2.4-m + CCD IAUC 5758 1992 05 01. &1 Tonry, J. 1992 10 02. 20.0 R Salzer, J. et al. IAUC 5741 1992 10 02. 20.0 R Humpreys, R. KPNO 0.9-m, CCD Nova 1993 01 23.635 [15.3 p TB Matsumoto, H. Fuji Color G-400 Mail(kat) 1993 02 24.687 [16.0 mv TB Kushida, R. Mail(kat) 1993 03 10.27 [15.5 mv Wren, W. McDonald Obs. IAUC 5757 1993 03 10.27 &1 Source corrected from IAUC 5737 1993 03 16.542 [15.0 mv TB Kushida, R. Mail(kat) 1993 03 16.90 19.9 R C Prugniel, P. #1 CCD serveral images IAUC 5742 1993 03 21.667 [16.0 p TB Okamoto, Y. Mail(kat) 1993 03 21.688 [14.0 p TB Matsushima ,T. 20cm SCT, Mail(kat) 1993 03 21.688 &1 Fuji Super G400 1993 03 23.10 19.9 R C Prugniel, P. #1 CCD between two dates IAUC 5742 1993 03 25.60 [18.5 R *van Driel, W. Kiso CCD IAUC 5737 1993 03 25.60 &1 mag. revision, Mail(kat) 1993 03 26.90 [14.0 mv Garcia, F. Mail(gmh) 1993 03 26.906 [14.0 mv A2 Ripero, J. 33.5-cm f/4.5 refl Mail(grl) 1993 03 26.906 &1 Observation published in IAUC 5731 1993 03 26.927 [14.5 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 03 26.930 [14 mv Korth, S. 36-cm refl. Mail(grl) 1993 03 26.995 [17 : p Schneider, O 0.21-m refl + K2415 IAUC 5788 1993 03 26.995 &1 Corrected magnitude and observer Mail(sch) 1993 03 27.91 [16.0 p Merlin, J.-C. Ektachrome 400 IAUC 5740 1993 03 28.30 13.8 C Neely, A. CCD IAUC 5740 1993 03 28.30 &1 star C V=14.5 (Richmond) 1993 03 28.30 &2 original mag = 13.8 1993 03 28.30 &3 star C definitely var Mail(gav) 1993 03 28.30 &4 =14.44 Mail(gav) 1993 03 28.30 &5 =14.47 nonvar? Mail(gav) 1993 03 28.30 &6 =14.50 +/- 0.02 Mail(gav) 1993 03 28.90 11.9 mv Mizser, A. Budapest, Hungary IAUC 5788 1993 03 28.906 11.8 mv A2 Garcia, F. 25-cm f/3.9 refl. IAUC 5731 1993 03 28.906 &1 DISCOVERY OBSERVATION 1993 03 28.906 &2 Corrected, original Mail(grl) 1993 03 28.906 &3 mag. = 12.0 Mail(gav) 1993 03 28.906 &4 revised comparisons Mail(grl) 1993 03 28.927 11.4 C A2 Rodriguez, D. 20-cm f/4 refl.+ CCD Mail(grl) 1993 03 28.927 &1 Time corrected from 1993 03 28.89 Mail(grl) 1993 03 28.983 11.5 mv A2 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 03 29.019 11.2 C Ulfheden, P. and 15-cm refl.+ ST-6 CCD Mail(grl) 1993 03 29.019 &1 Hamberg, I. Stockholm, Sweden 1993 03 29.18 11.4: C Neely, A. W. #2 CCD IAUC 5742 1993 03 29.18 &1 CCD, overexposed Mail(gav) 1993 03 29.691 10.3 p TB Hashimoto, Y. Fuji SG-400 Mail(kat) 1993 03 29.823 11.2 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 03 29.826 11.0 C A2 Rodriguez, D. 20-cm f/4 refl. + CCD Mail(grl) 1993 03 29.826 11.2 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 03 29.958 11.2 mv A2 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 03 30.006 11.0: C TB Solberg, R. 40.6-cm f/4.5 refl.+ Mail(grl) 1993 03 30.006 &1 ST-6 CCD. Nova Obs., Norway 1993 03 30.1 11 mv Treffers, R. R. 0.8-m + CCD IAUC 5731 1993 03 30.17 11.0: mv McGrath, T. AAVSO Z Cam seq. Mail(gav) 1993 03 30.19 10.77 V *Richmond Berkeley C News 1993 03 30.19 10.71 R C *Richmond Berkeley C News 1993 03 30.19 10.74 I C *Richmond Berkeley C News 1993 03 30.2 10.68 V *CfA Mail(gav) 1993 03 30.2 10.68 B *CfA Mail(gav) 1993 03 30.2 10.63 R C *CfA Mail(gav) 1993 03 30.2 10.63 I C *CfA Mail(gav) 1993 03 30.25 10.74 V Hartwick,F.et al. 50-cm refl.+ CCD IAUC 5731 1993 03 30.25 &1 revision Zurek et al. see IAUC 5761 1993 03 30.25 10.63 B Zurek et al. 50-cm refl. + CCD IAUC 5761 1993 03 30.25 10.65 R C Zurek et al. 50-cm refl. + CCD IAUC 5761 1993 03 30.25 10.64 I C Zurek et al. 50-cm refl. + CCD IAUC 5761 1993 03 30.538 10.4 mv TB Yamada, M. Mail(kat) 1993 03 30.823 10.1 mv A2 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 03 30.845 10.3: mv TA Schmeer, P. 20.3-cm SCT IAUC 5733 1993 03 30.854 10.0 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 03 30.865 10.0 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 03 30.865 10.6 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 03 30.870 10.9 mv T2 Midtskogen, O. 31.6-cm refl. 130x # Mail(grl) 1993 03 30.887 10.5 mv TA Hurst, G. M. 44-cm refl., class 2 TA E731 1993 03 30.887 &1 Basingstoke, England 1993 03 30.89 10.5 mv TA Taylor, M. D. Wakefield, England TA E731 1993 03 30.89 9.95 U *Penny LaPalma Mail(rw) 1993 03 30.89 10.77 B *Penny LaPalma Mail(rw) 1993 03 30.89 10.70 V *Penny LaPalma Mail(rw) 1993 03 30.89 10.60 R J *Penny LaPalma Mail(rw) 1993 03 30.89 10.51 I J *Penny LaPalma Mail(rw) 1993 03 30.899 10.6 mv TA+ Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 03 30.9 10.78 V Unger, S. B-V=0.05 Nova 1993 03 30.9 10.83 B Unger, S. B-V=0.05 Nova 1993 03 30.9 9.98 U Unger, S. Nova 1993 03 30.9 10.60 I Unger, S. Nova 1993 03 30.906 10.5 mv TB Schmeer, P. 20.3-cm SCT Mail(sch) 1993 03 30.917 10.6 C A2 Rodriguez, D. 20-cm f/4 refl. + CCD Mail(grl) 1993 03 30.916 10.6 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 03 30.917 10.0 mv T1 Pujol, F. 31-cm refl. Mail(grl) 1993 03 30.917 &1 Corrected Mail(gav) 1993 03 30.928 10.4 mv TB Taylor, M. Nova(gmh) 1993 03 30.93 10.5 mv TA Bengtsson, H. 15-cm refl. Mail(grl) 1993 03 30.93 &1 Hisings Backa, Sweden 1993 03 30.93 10.96 B Steele, I. 40cm refl, CCD Nova 1993 03 30.93 10.75 V Steele, I. 40cm refl, CCD Nova 1993 03 30.93 10.69 R C Steele, I. 40cm refl, CCD Nova 1993 03 30.93 10.55 I C Steele, I. 40cm refl, CCD Nova 1993 03 30.94 10.5 mv Shanklin, J. D. IAUC 5736 1993 03 30.943 10.4 mv TA Hewitt, N. Mail(gmh) 1993 03 30.95 10.3 mv Taylor, M. D. Estimate C=V TA E731 1993 03 30.989 10.6 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 03 31.00 10.94 B C Prugniel, P. #1 0.8-m + CCD, B-R=+0.3 IAUC 5736 1993 03 31.00 10.60 R C Prugniel, P. #1 0.8-m + CCD, B-R=+0.3 IAUC 5736 1993 03 31.02 10.82 V *Herbst Mail(gav) 1993 03 31.02 10.92 B *Herbst Mail(gav) 1993 03 31.02 10.70 R C *Herbst Mail(gav) 1993 03 31.02 10.60 I C *Herbst Mail(gav) 1993 03 31.05 10.8 V Smith, H. and IAUC 5758 1993 03 31.05 &1 Lansing, E. 1993 03 31.06 10.02 U *Penny LaPalma Mail(rw) 1993 03 31.06 10.85 B *Penny LaPalma Mail(rw) 1993 03 31.06 10.76 V *Penny LaPalma Mail(rw) 1993 03 31.06 10.64 R J *Penny LaPalma Mail(rw) 1993 03 31.06 10.56 I J *Penny LaPalma Mail(rw) 1993 03 31.080 10.7 mv NP Panther, R. Nova(gmh) 1993 03 31.087 10.0 mv S Moore, D. 20-cm SCT, class 2 News 1993 03 31.09 10.0 mv S Ryan Dubmin News(rw) 1993 03 31.1 10 mv Kohl, R. Independent discovery IAUC 5736 1993 03 31.1 10.21 U Unger, S. Nova 1993 03 31.1 10.85 V Unger, S. B-V=0.10 Nova 1993 03 31.1 10.95 B Unger, S. B-V=0.10 Nova 1993 03 31.1 10.74 R Unger, S. Nova 1993 03 31.1 10.62 I Unger, S. Nova 1993 03 31.1 10.80 V *CfA Mail(gav) 1993 03 31.1 10.88 B *CfA Mail(gav) 1993 03 31.1 10.67 R C *CfA Mail(gav) 1993 03 31.1 10.58 I C *CfA Mail(gav) 1993 03 31.13 10.5 mv Cainciolo, F. IAUC 5736 1993 03 31.13 10.5 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 03 31.130 10.6 mv TA+ Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 03 31.130 &1 revised magnitude 1993 03 31.14 10.87 V *Prugniel Mail(gav) 1993 03 31.14 11.20 B *Prugniel Mail(gav) 1993 03 31.14 10.73 R C *Prugniel Mail(gav) 1993 03 31.17 10.79 V Balonek, T. J. CCD IAUC 5746 1993 03 31.17 &1 et al. #2 1993 03 31.17 10.78 V *Barker et al. Mail(gav) 1993 03 31.17 10.87 B *Barker et al. Mail(gav) 1993 03 31.17 10.66 R C *Barker et al. Mail(gav) 1993 03 31.2 10.7 R Salzer, J. et al. IAUC 5741 1993 03 31.2 10.9 J Barker, E. et al. McDonald Obs. team Mail(gav) 1993 03 31.2 10.60 K Barker, E. et al. McDonald Obs. team Mail(gav) 1993 03 31.21 10.81 V Neely, A. W. #2 CCD IAUC 5742 1993 03 31.21 10.4 C Neely, A. W. #2 CCD IAUC 5742 1993 03 31.22 9.85 U Richmond Berkeley News 1993 03 31.22 11.06 B *Richmond Berkeley C News 1993 03 31.22 10.82 V *Richmond Berkeley C News 1993 03 31.22 10.73 R C *Richmond Berkeley C News 1993 03 31.22 10.56 I C *Richmond Berkeley C News 1993 03 31.250 10.7 mv AC Benge USA-TX Mail(rw) 1993 03 31.26 10.82 V Balonek, T. J. CCD IAUC 5746 1993 03 31.26 &1 et al. #2 1993 03 31.340 10.5 mv TB Rhoads Princeton Mail(rw) 1993 03 31.340 &1 Time is corrected Mail(rw) 1993 03 31.40 10.3 mv TA Hornby, P. TA E731 1993 03 31.424 10.5 mv TB Yamada, M. Mail(kat) 1993 03 31.440 10.5 mv TB Yamada, M. Mail(kat) 1993 03 31.576 10.5 mv TB Kato, T. 20cm-SCT Mail(kat) 1993 03 31.596 10.6 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 03 31.596 &1 corrected mag. Mail(kat) 1993 03 31.82 10.6 mv Pietz, J. Mail(jah) 1993 03 31.84 10.5 mv TA Zanotta, M. V. and IAUC 5737 1993 03 31.84 &1 Pesci, S . 1993 03 31.885 10.5 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 03 31.896 10.6 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 03 31.9 10.63 U Unger, S. Nova 1993 03 31.9 11.06 V Unger, S. B-V=0.22 Nova 1993 03 31.9 11.28 B Unger, S. B-V=0.22 Nova 1993 03 31.9 10.85 R Unger, S. Nova 1993 03 31.9 10.66 I Unger, S. Nova 1993 03 31.9 10.57 J Calamai Gornergrat IAUC 5741 1993 03 31.9 10.48 H Calamai Gornergrat IAUC 5741 1993 03 31.9 10.41 K Calamai Gornergrat IAUC 5741 1993 03 31.938 10.6 mv A2 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 03 31.961 10.97 V Hanzl, D. B-V=+0.33 IAUC 5742 1993 03 31.961 11.30 B Hanzl, D. B-V=+0.33 IAUC 5742 1993 03 31.969 10.7 mv Hasubick, W. TA E731 1993 03 31.970 10.6 mv Shanklin, J. TA E731 1993 03 31.972 10.94 V Sostero, G. et al. Correction IAUC 5750 IAUC 5741 1993 03 31.972 11.31 B Sostero, G. et al. Correction IAUC 5750 IAUC 5741 1993 03 31.98 10.55 U *Penny LaPalma Mail(rw) 1993 03 31.98 11.21 B *Penny LaPalma Mail(rw) 1993 03 31.98 11.02 V *Penny LaPalma Mail(rw) 1993 03 31.98 10.83 R J *Penny LaPalma Mail(rw) 1993 03 31.98 10.69 I J *Penny LaPalma Mail(rw) 1993 04 01.00 11.29 B C Prugniel, P. #1 CCD, B-R=+0.45 IAUC 5741 1993 04 01.00 10.80 R C Prugniel, P. #1 CCD, B-R=+0.45 IAUC 5741 1993 04 01.020 10.90 V Sostero, G. et al. B-V=+0.40 IAUC 5750 1993 04 01.020 11.30 B Sostero, G. et al. B-V=+0.40 IAUC 5750 1993 04 01.055 10.4 mv Beauchamp, D. 20.3-cm SCT. Class 2 Mail(grl) 1993 04 01.083 10.7 mv TB Schmeer, P. 20.3-cm SCT IAUC 5740 1993 04 01.13 10.4 mv TB Cianciolo, F. U. of Texas, Austin Mail(gav) 1993 04 01.13 &1 et al. 41-cm refl. 1993 04 01.14 10.5 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 01.16 11.06 V *Barker et al. Mail(gav) 1993 04 01.16 11.25 B *Barker et al. Mail(gav) 1993 04 01.16 10.85 R C *Barker et al. Mail(gav) 1993 04 01.18 11.08 V Neely, A. W. #2 IAUC 5742 1993 04 01.18 11.0 C Neely, A. W. #2 IAUC 5742 1993 04 01.2 11.08 V *CfA Mail(gav) 1993 04 01.2 11.31 B *CfA Mail(gav) 1993 04 01.2 10.91 R C *CfA Mail(gav) 1993 04 01.2 10.75 I C *CfA Mail(gav) 1993 04 01.21 11.07 V Balonek, T. J. CCD IAUC 5746 1993 04 01.21 &1 et al. #2 1993 04 01.21 10.54 J Odewahn, S. and 1.3m KPNO +SQIID IAUC 5760 1993 04 01.21 &1 Woodward, C. E. 1993 04 01.21 10.47 H Odewahn, S. and 1.3m KPNO +SQIID IAUC 5760 1993 04 01.21 &1 Woodward, C. E. 1993 04 01.21 10.37 K Odewahn, S. and 1.3m KPNO +SQIID IAUC 5760 1993 04 01.21 &1 Woodward, C. E. 1993 04 01.40 11.13 V Balonek, T. J. CCD IAUC 5746 1993 04 01.40 &1 et al. #2 1993 04 01.40 11.11 V HC McDavid, D. 40-cm + CCD Mail 1993 04 01.40 11.36 B HC McDavid, D. 40-cm + CCD Mail 1993 04 01.453 10.5 mv TB Takahashi, S. 20cm refr. Mail(kat) 1993 04 01.465 10.5 mv TB Iida, M. Mail(kat) 1993 04 01.480 10.6 mv Momose News 1993 04 01.499 11.49 B HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 01.499 11.21 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 01.499 10.98 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 01.499 10.74 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 01.538 10.4 mv TB Kato, T. 20cm SCT Mail(kat) 1993 04 01.58 10.8 p TB Kushida 40-cm + Fuji SG400 Mail(kat) 1993 04 01.604 11.0 mv TB Kiyota, S. 20cm refl. Mail(kat) 1993 04 01.622 10.4 mv TB Watanabe, Y. 12cm refl. Mail(kat) 1993 04 01.632 11.2 mv TB Shioi, H. 20cm refl. Mail(kat) 1993 04 01.633 10.5 p TB Kushida, Y. 40cm f/5, Mail(kat) 1993 04 01.633 &1 Tri-X no filter 1993 04 01.65 11.5 C Neely, A. W. #2 Mail(gav) 1993 04 01.65 &1 Time is apparently in error Mail(grl) 1993 04 01.660 11.22 V Okyudo, M. 60cm refl.+ CCD Mail(kat) 1993 04 01.660 &1 Nishi-Harima Obs. 1993 04 01.726 10.9 mv TB Watanabe, T. 10cm refl. Mail(kat) 1993 04 01.750 11.0 mv TB Koyama, H. 15cm refl. Mail(kat) 1993 04 01.785 10.8 p TB Koyama, H. 15cm f/6, GX 3200 Mail(kat) 1993 04 01.795 10.5 mv TB Hirosawa, K. 21cm refl. Mail(kat) 1993 04 01.80 10.7 mv TB Schmeer, P. Mail(rw) 1993 04 01.80 &1 Same obs. as Apr 1.083? Mail(grl) 1993 04 01.81 10.5 mv Vanmunster, T. IAUC 5740 1993 04 01.816 11.19 V Hanzl, D. B-V=0.32 IAUC 5742 1993 04 01.816 11.51 B Hanzl, D. B-V=0.32 IAUC 5742 1993 04 01.833 10.5: mv TB Bremseth, P.-J. 20.3-cm SCT 111x Mail(grl) 1993 04 01.833 &1 Ranheim, Norway 1993 04 01.844 10.5 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 01.86 11.32 V Mikolajewski, M. IAUC 5742 1993 04 01.86 11.58 B Mikolajewski, M. IAUC 5742 1993 04 01.86 10.95 R J Mikolajewski, M. IAUC 5742 1993 04 01.86 10.95 I J Mikolajewski, M. IAUC 5742 1993 04 01.863 10.7 mv TB Mizon, W. Nova(gmh) 1993 04 01.874 11.2 mv TB Toone, J. Nova(gmh) 1993 04 01.878 10.6 mv A2 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 01.885 10.6 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 04 01.89 11.2 mv Pietz, J. Mail(jah) 1993 04 01.9 11.03 U Unger, S. Nova 1993 04 01.9 11.31 V Unger, S. B-V=0.29 Nova 1993 04 01.9 11.60 B Unger, S. B-V=0.29 Nova 1993 04 01.9 11.06 R Unger, S. Nova 1993 04 01.9 10.85 I Unger, S. Nova 1993 04 01.9 11.06 U *Penny LaPalma Mail(rw) 1993 04 01.9 11.57 B *Penny LaPalma Mail(rw) 1993 04 01.9 11.30 V *Penny LaPalma Mail(rw) 1993 04 01.9 11.05 R J *Penny LaPalma Mail(rw) 1993 04 01.9 10.84 I J *Penny LaPalma Mail(rw) 1993 04 01.997 10.7 mv TA Fleet, R. Nova(gmh) 1993 04 02.042 10.6 mv TB Kratz, D. 20-cm f/3.5 refl. News 1993 04 02.1 11.24 U Unger, S. Nova 1993 04 02.1 11.41 V Unger, S. B-V=0.32 Nova 1993 04 02.1 11.73 B Unger, S. B-V=0.32 Nova 1993 04 02.1 11.15 R Unger, S. Nova 1993 04 02.1 10.91 I Unger, S. Nova 1993 04 02.12 11.46 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 02.13 11.37 V Balonek, T. J. CCD IAUC 5746 1993 04 02.13 &1 et al. #2 1993 04 02.13 11.33 V HC McDavid, D. 40-cm + CCD Mail 1993 04 02.13 11.64 B HC McDavid, D. 40-cm + CCD Mail 1993 04 02.15 11.45 V Neely, A. W. #2 IAUC 5742 1993 04 02.15 11.5 C Neely, A. W. #2 CCD IAUC 5742 1993 04 02.15 10.6 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 02.158 11.5 mv AC Benge USA-TX Mail(rw) 1993 04 02.17 10.8 mv TB Cianciolo, F. U. of Texas, Austin Mail(gav) 1993 04 02.17 &1 et al. 41-cm refl. 1993 04 02.17 11.4 mv Spratt, C. Victoria, BC IAUC 5757 1993 04 02.2 10.4 K Wheeler MacDonald IAUC 5743 1993 04 02.20 10.79 U Richmond Berkeley News 1993 04 02.20 11.91 B *Richmond Berkeley C News 1993 04 02.20 11.40 V *Richmond Berkeley C News 1993 04 02.20 11.21 R C *Richmond Berkeley C News 1993 04 02.20 11.15 I C *Richmond Berkeley C News 1993 04 02.22 11.39 V Balonek, T. J. CCD IAUC 5746 1993 04 02.22 &1 et al. #2 1993 04 02.3 10.7 J Wheeler MacDonald News(rw) 1993 04 02.31 10.62 J Odewahn, S. and 1.3m KPNO +SQIID IAUC 5760 1993 04 02.31 &1 Woodward, C. E. 1993 04 02.31 10.49 H Odewahn, S. and 1.3m KPNO +SQIID IAUC 5760 1993 04 02.31 &1 Woodward, C. E. 1993 04 02.31 10.33 K Odewahn, S. and 1.3m KPNO +SQIID IAUC 5760 1993 04 02.31 &1 Woodward, C. E. 1993 04 02.310 11.1 mv TB Hornby, P. Nova(gmh) 1993 04 02.32 11.40 V HC McDavid, D. 40-cm + CCD Mail 1993 04 02.32 11.71 B HC McDavid, D. 40-cm + CCD Mail 1993 04 02.37 11.45 V Balonek, T. J. CCD IAUC 5746 1993 04 02.37 &1 et al. #2 1993 04 02.40 11.43 V HC McDavid, D. 40-cm + CCD Mail 1993 04 02.40 11.77 B HC McDavid, D. 40-cm + CCD Mail 1993 04 02.439 11.0 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 02.453 10.9 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 02.494 11.50 V Kato, T. 60cm, CCD Mail(kat) 1993 04 02.511 11.83 B HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 02.511 11.48 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 02.511 11.21 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 02.511 10.94 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 02.585 11.1 mv TB Watanabe, M. 13cm refl. Mail(kat) 1993 04 02.608 11.5 mv TB Sakuma, S. 40cm refl. Mail(kat) 1993 04 02.611 11.78 B Kato, T. 60cm, CCD Mail(kat) 1993 04 02.637 11.08 I C Kato, T. 60cm, CCD Mail(kat) 1993 04 02.716 10.6 mv TB Abe, S. 31cm refl. Mail(kat) 1993 04 02.828 11.7 mv TB Midtskogen, O. 31.6cm refl 130x Mail(grl) 1993 04 02.831 11.1 mv TB+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 02.831 &1 Oslo, Norway 1993 04 02.837 11.2 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 02.837 10.8 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 02.843 11.3 mv TB Poyner, G. 40-cm refl. Mail(poy) 1993 04 02.844 11.3 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 02.844 11.4 mv TA Taylor, M. Nova(gmh) 1993 04 02.847 10.7 mv TA Mizon, W. Nova(gmh) 1993 04 02.847 11.5 mv TA McKim, R. Nova(gmh) 1993 04 02.855 11.58 C TA+ Helbak, K. 20-cm f/4 + ST-4 CCD Mail(grl) 1993 04 02.855 &1 Slependen, Norway 1993 04 02.860 11.4 mv TA Shanklin, J. Nova(gmh) 1993 04 02.863 11.57 C TA+ Helbak, K. 20-cm f/4 + ST-4 CCD Mail(grl) 1993 04 02.865 11.8 mv TB Marriott, G. Nova(gmh) 1993 04 02.867 11.3 mv TB Granslo, B. H. 20.3-cm SCT, 123x, Mail(grl) 1993 04 02.872 11.57 C TA+ Helbak, K. 20-cm f/4 + ST-4 CCD Mail(grl) 1993 04 02.876 11.2 mv TA Taylor, M. Nova(gmh) 1993 04 02.881 11.2 mv TA Taylor, M. Nova(gmh) 1993 04 02.884 12.0 mv TA Hurst, G. Nova(gmh) 1993 04 02.89 12.18 B Steele, I. 40cm refl. CCD Nova 1993 04 02.89 11.60 V Steele, I. 40cm refl. CCD Nova 1993 04 02.89 11.24 R C Steele, I. 40cm refl. CCD Nova 1993 04 02.89 11.12 I C Steele, I. 40cm refl. CCD Nova 1993 04 02.890 11.2 mv TA Taylor, M. Nova(gmh) 1993 04 02.895 11.4 mv TA Middleton, K. Nova(gmh) 1993 04 02.906 11.2 mv TA Taylor, M. Nova(gmh) 1993 04 02.91 11.86 B Hanzl IAUC 5747 1993 04 02.91 11.36 V Hanzl IAUC 5747 1993 04 02.917 11.0 mv Washington, C. Mail(gmh) 1993 04 02.924 12.1 mv TA Hewitt, N. Mail(gmh) 1993 04 02.93 11.42 V Morrison et al. IAUC 5767 1993 04 02.95 11.5 mv TB Bengtsson, H. 15-cm refl. Mail(grl) 1993 04 02.950 11.9 mv TA Haymes, T. Nova(gmh) 1993 04 02.962 11.5 mv Porter, M. Nova(gmh) 1993 04 02.969 11.5 mv TA Evans, N. Nova(gmh) 1993 04 02.972 11.4 mv TA Fleet, R. Nova(gmh) 1993 04 02.980 11.1 mv TA Pantrher Mail(gmh) 1993 04 02.99 11.48 U *Penny LaPalma Mail(rw) 1993 04 02.99 11.91 B *Penny LaPalma Mail(rw) 1993 04 02.99 11.62 V *Penny LaPalma Mail(rw) 1993 04 02.99 11.32 R J *Penny LaPalma Mail(rw) 1993 04 02.99 11.03 I J *Penny LaPalma Mail(rw) 1993 04 03.011 11.3 mv TA+ Granslo, B. H. 20.3-cm SCT, 123x Mail(grl) 1993 04 03.03 11.7 C Kessler, T. 15.0-cm + ST-4 CCD Mail(jah) 1993 04 03.11 11.3 mv TB Skartlien, R. 25.4cm refl, 108x Mail(grl) 1993 04 03.11 &1 Haagaar Obs., Norway 1993 04 03.127 11.8 mv TA Day, J. Nova(gmh) 1993 04 03.13 11.67 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 03.15 11.4 mv TB Buta, R. U. Alabama Mail(gav) 1993 04 03.16 12.10 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5750 1993 04 03.16 11.40 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5750 1993 04 03.16 11.93 B *Penny LaPalma Mail(rw) 1993 04 03.16 11.65 V *Penny LaPalma Mail(rw) 1993 04 03.16 11.26 R J *Penny LaPalma Mail(rw) 1993 04 03.16 10.97 I J *Penny LaPalma Mail(rw) 1993 04 03.18 11.2 mv TB Wren, W. McDolanld Obs. Mail(gav) 1993 04 03.18 &1 time corrected 1993 04 03.2 11.98 B Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 03.2 &1 Sauerbrei, P. 1993 04 03.2 11.69 V Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 03.2 &1 Sauerbrei, P. 1993 04 03.2 11.23 R J Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 03.2 &1 Sauerbrei, P. 1993 04 03.2 10.96 I J Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 03.2 &1 Sauerbrei, P. 1993 04 03.20 11.09 U *Richmond Berkeley C News 1993 04 03.20 12.11 B *Richmond Berkeley C News 1993 04 03.20 11.62 V *Richmond Berkeley C News 1993 04 03.20 11.36 R C *Richmond Berkeley C News 1993 04 03.20 10.97 I C *Richmond Berkeley C News 1993 04 03.22 11.52 U Richmond Berkeley News 1993 04 03.22 12.02 B Richmond Berkeley News 1993 04 03.22 11.67 V Richmond Berkeley News 1993 04 03.22 11.36 R C Richmond Berkeley News 1993 04 03.22 11.08 I C Richmond Berkeley News 1993 04 03.28 11.5 mv Johnson, W. Anza, CA IAUC 5757 1993 04 03.299 11.75 V GS RoboScope 40.6-cm refl.+ Mail(grl) 1993 04 03.299 &1 AutomaticTelescope 512x512 Tektronix CCD 1993 04 03.299 &2 (c/o Turner, G.W.) Univ. Indiana 1993 04 03.299 &3 Differential photometry 1993 04 03.310 11.1 mv TB Hornby, P. Nova(gmh) 1993 04 03.342 11.78 V GS RoboScope Aut.Tel. 40.6-cm refl.+ CCD Mail(grl) 1993 04 03.342 &1 (c/o Turner, G.W.) Univ. Indiana 1993 04 03.369 11.76 V GS RoboScope Aut.Tel. 40.6-cm refl.+ CCD Mail(grl) 1993 04 03.369 &1 (c/o Turner, G.W.) Univ. Indiana 1993 04 03.385 11.77 V GS RoboScope Aut.Tel. 40.6-cm refl.+ CCD Mail(grl) 1993 04 03.385 &1 (c/o Turner, G.W.) Univ. Indiana 1993 04 03.39 10.91 J Lawrence, G. F. Univ. of Minnesota IAUC 5757 1993 04 03.39 &1 and Paulson, A. 0.76m 1993 04 03.39 10.66 H Lawrence, G. F. Univ. of Minnesota IAUC 5757 1993 04 03.39 &1 and Paulson, A. 0.76m 1993 04 03.39 10.48 K Lawrence, G. F. Univ. of Minnesota IAUC 5757 1993 04 03.39 &1 and Paulson, A. 0.76m 1993 04 03.448 11.3 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 03.530 12.25 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 03.530 11.76 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 03.530 11.42 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 03.530 11.14 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 03.555 11.76 V Kato, Taichi 60cm, CCD Mail(kat) 1993 04 03.561 12.09 B Kato, Taichi 60cm, CCD Mail(kat) 1993 04 03.574 11.15 I C Kato, Taichi 60cm, CCD Mail(kat) 1993 04 03.574 11.5 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 03.66 11.8 mv TB Kushida, R. Mail(kat) 1993 04 03.68 11.9 mv TB Kushida, Y. Mail(kat) 1993 04 03.71 11.4 mv TB Onodera, O. 25cm SCT 128x News 1993 04 03.831 11.0 mv TB Dahle, H. 20.3-cm SCT, 200x Mail(grl) 1993 04 03.837 11.2 mv TB Dahle, H. 20.3-cm SCT, 200x Mail(grl) 1993 04 03.838 11.8 mv TA Midtskogen, O. 31.6cm refl. 62x Mail(grl) 1993 04 03.862 11.4 mv TA Westlund, M. 20.3-cm SCT Mail(grl) 1993 04 03.862 &1 Uppsala, Sweden 1993 04 03.896 11.4 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 04 03.896 &1 Corrected from Apr 3.84 and mv = 11.3 Mail(grl) 1993 04 03.90 11.76 U *Penny LaPalma Mail(rw) 1993 04 03.90 12.14 B *Penny LaPalma Mail(rw) 1993 04 03.90 11.79 V *Penny LaPalma Mail(rw) 1993 04 03.90 11.41 R J *Penny LaPalma Mail(rw) 1993 04 03.90 11.19 I J *Penny LaPalma Mail(rw) 1993 04 03.938 11.4 mv A2 Garcia, F. 25-cm f/3.9 refl. Mail(grl) 1993 04 04.029 11.6 mv TB Schmeer, P. 20.3-cm SCT IAUC 5757 1993 04 04.069 12.0 mv TB Chaloux, D. 20cm f/5, 105x News 1993 04 04.069 &1 revised mag. Mail(grl) 1993 04 04.083 10.8 mv TB Kratz, D. 20-cm f/3.5 refl. News 1993 04 04.09 11.80 U *Penny LaPalma Mail(rw) 1993 04 04.09 12.19 B *Penny LaPalma Mail(rw) 1993 04 04.09 11.82 V *Penny LaPalma Mail(rw) 1993 04 04.09 11.47 R J *Penny LaPalma Mail(rw) 1993 04 04.09 11.23 I J *Penny LaPalma Mail(rw) 1993 04 04.1 11.81 V Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 04.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 04.1 12.26 B Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 04.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 04.1 11.50 R Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 04.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 04.1 &2 R and I magnitudes in Cousins system? mail(gav) 1993 04 04.1 11.24 I Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 04.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 04.13 11.81 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 04.17 11.9 mv TB Wren, W. 60-cm refl. Mail(gav) 1993 04 04.2 12.19 B Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 04.2 &1 Sauerbrei, P. 1993 04 04.2 11.86 V Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 04.2 &1 Sauerbrei, P. 1993 04 04.2 11.37 R J Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 04.2 &1 Sauerbrei, P. 1993 04 04.2 11.13 I J Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 04.2 &1 Sauerbrei, P. 1993 04 04.2 11.86 V *CfA Mail(gav) 1993 04 04.2 12.25 B *CfA Mail(gav) 1993 04 04.2 11.50 R C *CfA Mail(gav) 1993 04 04.2 11.24 I C *CfA Mail(gav) 1993 04 04.23 12.1 mv TB Rhoads Princeton News 1993 04 04.81 11.9 mv Pietz, J. Mail(jah) 1993 04 04.826 11.78 U Lyuty, V. M. Ukraine News 1993 04 04.826 12.05 B Lyuty, V. M. Ukraine News 1993 04 04.826 11.81 V Lyuty, V. M. Ukraine News 1993 04 04.833 11.3 mv TB Bremseth, P.-J. 20.3-cm SCT 166x Mail(grl) 1993 04 04.843 11.97 U Lyuty, V. M. Ukraine News 1993 04 04.843 12.18 B Lyuty, V. M. Ukraine News 1993 04 04.843 11.86 V Lyuty, V. M. Ukraine News 1993 04 04.856 11.8 mv TA McKim, R. Nova(gmh) 1993 04 04.893 11.8 mv TA Taylor, M. Nova(gmh) 1993 04 04.901 11.8 mv TA Ewen-Smith, B. Nova(gmh) 1993 04 04.932 11.8 mv TB Korth, S. 36-cm f/11 refl. Mail(jah) 1993 04 04.95 11.85 U *Penny LaPalma Mail(rw) 1993 04 04.95 12.28 B *Penny LaPalma Mail(rw) 1993 04 04.95 11.90 V *Penny LaPalma Mail(rw) 1993 04 04.95 11.52 R J *Penny LaPalma Mail(rw) 1993 04 04.95 11.27 I J *Penny LaPalma Mail(rw) 1993 04 04.950 11.7 mv TA Shanklin, J. Nova(gmh) 1993 04 05. 11.84 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 05.00 12.35 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5750 1993 04 05.00 11.55 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5750 1993 04 05.03 11.8 mv Bortle, J. Stormville, NY IAUC 5757 1993 04 05.040 12.0: mv TA Beauchamp, D. 20.3-cm SCT 154x Mail(grl) 1993 04 05.08 11.88 U *Penny LaPalma Mail(rw) 1993 04 05.08 12.29 B *Penny LaPalma Mail(rw) 1993 04 05.08 11.92 V *Penny LaPalma Mail(rw) 1993 04 05.08 11.51 R J *Penny LaPalma Mail(rw) 1993 04 05.08 11.28 I J *Penny LaPalma Mail(rw) 1993 04 05.1 11.86 V Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 05.1 &1 Sauerbrei, P. 1993 04 05.1 11.34 R J Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 05.1 &1 Sauerbrei, P. 1993 04 05.1 11.03 I J Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 05.1 &1 Sauerbrei, P. 1993 04 05.1 11.96 V Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 05.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 05.1 12.30 B Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 05.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 05.1 11.51 R Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 05.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 05.1 11.30 I Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 05.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 05.10 11.6 mv TB Viens Quebec News(rw) 1993 04 05.11 11.76 V TB Ferguson Ohio News(rw) 1993 04 05.11 11.80 C HC Ferguson, D. C., 10-cm refr.+LYNXX CCD Mail(grl) 1993 04 05.11 &1 Morton, T. L., Baldwin Wallace Coll. 1993 04 05.11 &2 and Snyder, D. B. Berea, Ohio 1993 04 05.12 11.86 V HC McDavid, D. 40-cm + CCD Mail 1993 04 05.12 12.24 B HC McDavid, D. 40-cm + CCD Mail 1993 04 05.120 11.9 mv TB Schmeer, P. 20.3-cm SCT Mail(sch) 1993 04 05.15 12.1 mv TB Levy, S. 20.3-cm SCT, 133x News 1993 04 05.15 &1 Univ. Minnesota 1993 04 05.17 11.87 V *Herbst Mail(gav) 1993 04 05.17 12.25 B *Herbst Mail(gav) 1993 04 05.17 11.52 R C *Herbst Mail(gav) 1993 04 05.17 11.26 I C *Herbst Mail(gav) 1993 04 05.19 12.0 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 05.20 11.90 V *Herbst Mail(gav) 1993 04 05.20 12.26 B *Herbst Mail(gav) 1993 04 05.20 11.51 R C *Herbst Mail(gav) 1993 04 05.20 11.27 I C *Herbst Mail(gav) 1993 04 05.26 11.86 V HC McDavid, D. 40-cm + CCD Mail 1993 04 05.26 12.27 B HC McDavid, D. 40-cm + CCD Mail 1993 04 05.27 11.91 V *Herbst Mail(gav) 1993 04 05.27 12.27 B *Herbst Mail(gav) 1993 04 05.27 11.55 R C *Herbst Mail(gav) 1993 04 05.27 11.28 I C *Herbst Mail(gav) 1993 04 05.271 11.8 mv Royer, R. Lakewood, CA IAUC 5757 1993 04 05.31 11.90 V *Herbst Mail(gav) 1993 04 05.31 12.27 B *Herbst Mail(gav) 1993 04 05.31 11.55 R C *Herbst Mail(gav) 1993 04 05.31 11.29 I C *Herbst Mail(gav) 1993 04 05.310 12.2 mv TB Hornby, P. Nova(gmh) 1993 04 05.33 11.88 V *Herbst Mail(gav) 1993 04 05.33 12.25 B *Herbst Mail(gav) 1993 04 05.33 11.53 R C *Herbst Mail(gav) 1993 04 05.33 11.29 I C *Herbst Mail(gav) 1993 04 05.34 11.88 V *Herbst Mail(gav) 1993 04 05.34 12.25 B *Herbst Mail(gav) 1993 04 05.34 11.53 R C *Herbst Mail(gav) 1993 04 05.34 11.30 I C *Herbst Mail(gav) 1993 04 05.35 11.86 V *Herbst Mail(gav) 1993 04 05.35 12.23 B *Herbst Mail(gav) 1993 04 05.35 11.51 R C *Herbst Mail(gav) 1993 04 05.35 11.28 I C *Herbst Mail(gav) 1993 04 05.37 11.85 V HC McDavid, D. 40-cm + CCD Mail 1993 04 05.37 12.26 B HC McDavid, D. 40-cm + CCD Mail 1993 04 05.431 11.8 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 05.438 12.2 mv TB Kiyota, S. 20cm, correction Mail(kat) 1993 04 05.444 12.0 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 05.489 11.88 V Kato, Taichi 60cm, CCD Mail(kat) 1993 04 05.50 12.0 mv TB Onodera, O. 25cm SCT 128x News 1993 04 05.513 11.24 I C Kato, Taichi 60cm, CCD Mail(kat) 1993 04 05.517 12.0 mv TB Kushida, Y. 45cm refl. Mail(kat) 1993 04 05.517 12.0 mv TB Kushida, R. 45cm refl. Mail(kat) 1993 04 05.519 11.83 C TB Fujita, Y. 60cm f/6 refl. CCD Mail(kat) 1993 04 05.519 &1 Kuma-Kougen Obs. 1993 04 05.524 12.2 mv TB Watanabe, T. 10cm refl. Mail(kat) 1993 04 05.539 12.31 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 05.539 11.85 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 05.539 11.48 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 05.539 11.26 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 05.549 12.25 B Kato, Taichi 60cm, CCD Mail(kat) 1993 04 05.566 12.1 mv TB Watanabe, Y. 20cm SCT Mail(kat) 1993 04 05.573 11.9 mv TB Koyama, H. 15cm refl. Mail(kat) 1993 04 05.589 11.8 C TB Kushida, Y. 40cm, ST-4 CCD Mail(kat) 1993 04 05.614 11.89 V Kato, Taichi 60cm, CCD Mail(kat) 1993 04 05.619 11.9 p TB Koyama, H. 15cm refl., GX 3200 Mail(kat) 1993 04 05.624 12.2 mv TB Abe, S. 16cm refl. Mail(kat) 1993 04 05.642 12.1 mv TB Shioi, H. 20cm refl. Mail(kat) 1993 04 05.652 12.0 mv TB Ohkura, N. 35.5cm SCT 98x Mail(kat) 1993 04 05.660 11.98 V Okyudo, M and 60cm refl. + CCD Mail(kat) 1993 04 05.660 &1 Ishida, T. Nishi-Harima Obs. 1993 04 05.669 12.25 B Kato, Taichi 60cm, CCD Mail(kat) 1993 04 05.670 11.93 V HC Ohkura, N. and 35-cm SCT Mail(kat) 1993 04 05.670 &1 Ohshima, O. 1993 04 05.670 12.38 B HC Ohkura, N. and 35-cm SCT Mail(kat) 1993 04 05.670 &1 Ohshima, O. 1993 04 05.684 12.0 mv TB Watanabe, S. 16cm refl. Mail(kat) 1993 04 05.713 11.08 I C Kato, Taichi 60cm, CCD Mail(kat) 1993 04 05.830 11.7 mv TB Bremseth, P.-J. 20.3-cm SCT 111x Mail(grl) 1993 04 05.854 11.9 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 05.91 11.93 U *Penny LaPalma Mail(rw) 1993 04 05.91 12.27 B *Penny LaPalma Mail(rw) 1993 04 05.91 11.86 V *Penny LaPalma Mail(rw) 1993 04 05.91 11.47 R J *Penny LaPalma Mail(rw) 1993 04 05.91 11.23 I J *Penny LaPalma Mail(rw) 1993 04 05.93 11.87 V Mikolajewski, M. N. Copernicus Univ. IAUC 5750 1993 04 05.93 &1 and Belcznski, K. Torun 1993 04 05.93 12.37 B Mikolajewski et al. N. Copernicus Univ. IAUC 5750 1993 04 05.93 11.90 U Mikolajewski et al. N. Copernicus Univ. IAUC 5750 1993 04 05.93 11.35 R J Mikolajewski et al. N. Copernicus Univ. IAUC 5750 1993 04 05.93 10.97 I J Mikolajewski et al. N. Copernicus Univ. IAUC 5750 1993 04 05.950 12.1 mv TA Shanklin, J. Nova(gmh) 1993 04 05.954 11.8 mv TA Ewen-Smith, B. Nova(gmh) 1993 04 05.97 11.94 U *Penny LaPalma Mail(rw) 1993 04 05.97 12.27 B *Penny LaPalma Mail(rw) 1993 04 05.97 11.88 V *Penny LaPalma Mail(rw) 1993 04 05.97 11.44 R J *Penny LaPalma Mail(rw) 1993 04 05.97 11.26 I J *Penny LaPalma Mail(rw) 1993 04 05.99 12.0 mv Pietz, J. Mail(jah) 1993 04 06.007 11.9 mv TA+ Andersen, O. I. 20.3-cm refl. 135x Mail(grl) 1993 04 06.007 &1 Malm, Norway 1993 04 06.007 11.9 mv TA Bremseth, P. Mail(gmh) 1993 04 06.009 11.9 mv TA+ Granslo, B. H. 20.3-cm refl. 135x Mail(grl) 1993 04 06.009 &1 Malm, Norway 1993 04 06.02 11.86 V *Herbst Mail(gav) 1993 04 06.02 12.25 B *Herbst Mail(gav) 1993 04 06.02 11.50 R C *Herbst Mail(gav) 1993 04 06.02 11.28 I C *Herbst Mail(gav) 1993 04 06.092 11.9 mv TA+ Granslo, B. H. 15.2-cm refl. 135x Mail(grl) 1993 04 06.1 11.86 V Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 06.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 06.1 11.45 R Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 06.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 06.10 11.94 U *Penny LaPalma Mail(rw) 1993 04 06.10 12.26 B *Penny LaPalma Mail(rw) 1993 04 06.10 11.86 V *Penny LaPalma Mail(rw) 1993 04 06.10 11.45 R J *Penny LaPalma Mail(rw) 1993 04 06.10 11.24 I J *Penny LaPalma Mail(rw) 1993 04 06.11 11.82 V HC McDavid, D. 40-cm + CCD Mail 1993 04 06.11 12.23 B HC McDavid, D. 40-cm + CCD Mail 1993 04 06.140 11.7 mv TB Beauchamp Quebec News(rw) 1993 04 06.174 12.1 mv TB Bryan, J. 25cm refl. 120x Mail 1993 04 06.20 11.78 V *Richmond Berkeley C News 1993 04 06.20 11.39 R C *Richmond Berkeley C News 1993 04 06.20 11.18 I C *Richmond Berkeley C News 1993 04 06.21 11.8 mv TB Viens Quebec News(rw) 1993 04 06.22 11.89 U Richmond Berkeley News 1993 04 06.22 12.24 B Richmond Berkeley News 1993 04 06.22 11.84 V Richmond Berkeley News 1993 04 06.22 11.47 R C Richmond Berkeley News 1993 04 06.22 11.24 I C Richmond Berkeley News 1993 04 06.24 11.81 V HC McDavid, D. 40-cm + CCD Mail 1993 04 06.24 12.21 B HC McDavid, D. 40-cm + CCD Mail 1993 04 06.26 11.7 mv T1 Dillon, W. G. Missouri City, TX IAUC 5757 1993 04 06.260 11.7 mv TB Hornby, P. Nova(gmh) 1993 04 06.265 11.8 mv TB Beauchamp, D. 25.4-cm refl. 71x Mail(grl) 1993 04 06.428 11.8 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 06.442 11.9 mv TB Yamada, M. Mail(kat) 1993 04 06.485 11.84 V Kato, Taichi 60cm, CCD Mail(kat) 1993 04 06.5 12.21 B Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 06.5 &1 Sauerbrei, P. 1993 04 06.5 11.85 V Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 06.5 &1 Sauerbrei, P. 1993 04 06.5 11.28 R J Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 06.5 &1 Sauerbrei, P. 1993 04 06.5 11.11 I J Mutel, R. and Univ. of Iowa IAUC 5758 1993 04 06.5 &1 Sauerbrei, P. 1993 04 06.511 11.29 I C Kato, Taichi 60cm, CCD Mail(kat) 1993 04 06.538 12.23 B Kato, Taichi 60cm, CCD Mail(kat) 1993 04 06.549 11.76 C TB Fujita, Y. 60cm f/6 refl. CCD Mail(kat) 1993 04 06.549 &1 Kuma-Kougen Obs. 1993 04 06.553 11.8 C TB Kushida, Y. 40cm refl, ST-4 CCD Mail(kat) 1993 04 06.570 11.6 p TB Ohno, I. 20cm f/8.0 Mail(kat) 1993 04 06.570 &1 Fuji Color SG400 1993 04 06.593 12.25 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 06.593 11.78 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 06.593 11.37 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 06.593 11.20 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 06.685 11.79 V Kato, Taichi 60cm, CCD Mail(kat) 1993 04 06.720 12.19 B Kato, Taichi 60cm, CCD Mail(kat) 1993 04 06.739 11.23 I C Kato, Taichi 60cm, CCD Mail(kat) 1993 04 06.840 11.2 mv TB Bremseth, P.-J. 20.3-cm SCT 111x Mail(grl) 1993 04 06.849 11.8 mv TB Taylor, M. Nova(gmh) 1993 04 06.854 12.0 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 04 06.856 11.9 mv TA Ewen-Smith, B. Nova(gmh) 1993 04 06.861 11.8 mv TA Day, J. Nova(gmh) 1993 04 06.864 12.0 mv TA Hurst, G. Nova(gmh) 1993 04 06.865 11.8 mv TA Caswell, R. Nova(gmh) 1993 04 06.87 12.0 mv Pietz, J. Mail(jah) 1993 04 06.875 12.0 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 06.875 11.9 C A2 Rodriguez, D. 20-cm f/4 refl. + CCD Mail(grl) 1993 04 06.870 12.1 mv TA Shanklin, J. Nova(gmh) 1993 04 06.880 11.8 mv TA Haymes, T. Nova(gmh) 1993 04 06.882 11.6 mv TA Taylor, M. Nova(gmh) 1993 04 06.895 11.7 mv TB Poyner, G. 40cm refl. Mail(poy) 1993 04 06.896 12.0 mv A2 Carvajal, J. 31-cm f/4.5 refl. Mail(grl) 1993 04 06.903 12.0 mv TA+ Granslo, B. H. 15.2-cm refl. 135x Mail(grl) 1993 04 06.930 11.9 mv TA Panther Mail(gmh) 1993 04 06.947 11.4 mv TA Hewitt, N. Mail(gmh) 1993 04 06.99 11.95 U *Penny LaPalma Mail(rw) 1993 04 06.99 12.21 B *Penny LaPalma Mail(rw) 1993 04 06.99 11.80 V *Penny LaPalma Mail(rw) 1993 04 06.99 11.38 R J *Penny LaPalma Mail(rw) 1993 04 06.99 11.18 I J *Penny LaPalma Mail(rw) 1993 04 07.00 12.25 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5758 1993 04 07.00 11.43 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5758 1993 04 07.052 11.8 V Smith, H. and IAUC 5758 1993 04 07.052 &1 Lansing, E. 1993 04 07.072 11.8 mv TB Beauchamp, D. 20.3-xm SCT 154x Mail(grl) 1993 04 07.095 11.5 mv TA Lubek Mail(gmh) 1993 04 07.14 11.71 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 07.16 11.7 mv TB Viens Quebec News(rw) 1993 04 07.170 11.8 mv TB Hornby, P. Nova(gmh) 1993 04 07.22 11.84 U *Richmond Berkeley C News 1993 04 07.22 12.30 B *Richmond Berkeley C News 1993 04 07.22 11.75 V *Richmond Berkeley C News 1993 04 07.22 11.40 R C *Richmond Berkeley C News 1993 04 07.22 11.18 I C *Richmond Berkeley C News 1993 04 07.23 11.6 mv TB Wren, W. IAUC 5757 1993 04 07.24 11.90 U Richmond Berkeley News 1993 04 07.24 12.17 B Richmond Berkeley News 1993 04 07.24 11.73 V Richmond Berkeley News 1993 04 07.24 11.37 R C Richmond Berkeley News 1993 04 07.24 11.16 I C Richmond Berkeley News 1993 04 07.30 11.73 U *Richmond Berkeley C News 1993 04 07.30 12.19 B *Richmond Berkeley C News 1993 04 07.30 11.64 V *Richmond Berkeley C News 1993 04 07.30 11.29 R C *Richmond Berkeley C News 1993 04 07.30 11.07 I C *Richmond Berkeley C News 1993 04 07.431 11.7 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 07.483 11.7 mv TB Funada, M. 13cm refl. 151x Mail(kat) 1993 04 07.496 11.70 V Kato, Taichi 60cm, CCD Mail(kat) 1993 04 07.522 11.8 mv TB Watanabe, T. 10cm refl. Mail(kat) 1993 04 07.532 12.11 B Kato, Taichi 60cm, CCD Mail(kat) 1993 04 07.537 12.0 mv TB Sekino, Y. 28cm refl. Mail(kat) 1993 04 07.567 11.18 I C Kato, Taichi 60cm, CCD Mail(kat) 1993 04 07.56 11.75 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 07.56 12.10 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 07.56 11.71 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 07.56 11.18 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 07.56 10.93 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 07.589 11.73 V Kato, Taichi 60cm, CCD Mail(kat) 1993 04 07.596 11.7 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 07.610 11.69 V Okyudo, M and 60cm refl. + CCD Mail(kat) 1993 04 07.610 &1 Ishida, T. Nishi-Harima Obs. 1993 04 07.667 12.18 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 07.667 11.65 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 07.667 11.23 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 07.667 11.14 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 07.844 12.0 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 04 07.844 &1 Time is corrected from Apr 7.83 Mail(grl) 1993 04 07.847 12.0 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 07.903 11.4 mv TB Bremseth, P.-J. 20.3-cm SCT 111x Mail(grl) 1993 04 07.917 12.0 mv A2 Rodriguez, D. 20-cm f/4 refl. Mail(grl) 1993 04 07.917 &1 Visual obs., not unfiltered CCD (?) Mail(grl) 1993 04 07.92 11.50 V Morrison et al. IAUC 5767 1993 04 07.933 11.7 mv TA Ewen-Smith, B. Nova(gmh) 1993 04 08.00 12.14 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5758 1993 04 08.00 11.31 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5758 1993 04 08.00 11.63 V *Herbst Mail(gav) 1993 04 08.00 12.09 B *Herbst Mail(gav) 1993 04 08.00 11.31 R C *Herbst Mail(gav) 1993 04 08.00 11.11 I C *Herbst Mail(gav) 1993 04 08.02 11.90 U *Jones LaPalma Mail(rw) 1993 04 08.02 12.07 B *Jones LaPalma Mail(rw) 1993 04 08.02 11.64 V *Jones LaPalma Mail(rw) 1993 04 08.02 11.24 R J *Jones LaPalma Mail(rw) 1993 04 08.02 11.09 I J *Jones LaPalma Mail(rw) 1993 04 08.031 11.5 mv TB Kratz, D. 20-cm f/3.5 refl. News 1993 04 08.042 11.5 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 08.08 11.4 mv Heil, C. Andover, MA IAUC 5757 1993 04 08.08 11.7 mv TB Rhoads Princeton Mail(rw) 1993 04 08.08 11.6 mv TB Wijers Mail(rw) 1993 04 08.08 11.64 V *Herbst Mail(gav) 1993 04 08.08 12.08 B *Herbst Mail(gav) 1993 04 08.08 11.29 R C *Herbst Mail(gav) 1993 04 08.08 11.11 I C *Herbst Mail(gav) 1993 04 08.1 11.5 mv TB Richmond, M. 23cm refr. News 1993 04 08.10 11.89 U *Penny LaPalma Mail(rw) 1993 04 08.10 12.06 B *Penny LaPalma Mail(rw) 1993 04 08.10 11.63 V *Penny LaPalma Mail(rw) 1993 04 08.10 11.25 R J *Penny LaPalma Mail(rw) 1993 04 08.10 11.10 I J *Penny LaPalma Mail(rw) 1993 04 08.11 11.61 V HC McDavid, D. 40-cm + CCD Mail 1993 04 08.110 11.8 mv AC Benge USA-TX Mail(rw) 1993 04 08.118 11.6 mv TB Bryan, J. 25cm refl. 80x Mail(bry) 1993 04 08.150 12.0 mv TB Hornby, P. Nova(gmh) 1993 04 08.17 11.7 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 08.19 11.62 V *Herbst Mail(gav) 1993 04 08.19 12.06 B *Herbst Mail(gav) 1993 04 08.19 11.25 R C *Herbst Mail(gav) 1993 04 08.19 11.08 I C *Herbst Mail(gav) 1993 04 08.21 11.86 U Richmond Berkeley News 1993 04 08.21 12.05 B Richmond Berkeley News 1993 04 08.21 11.62 V Richmond Berkeley News 1993 04 08.21 11.26 R C Richmond Berkeley News 1993 04 08.21 11.07 I C Richmond Berkeley News 1993 04 08.24 11.76 U *Richmond Berkeley C News 1993 04 08.24 12.13 B *Richmond Berkeley C News 1993 04 08.24 11.54 V *Richmond Berkeley C News 1993 04 08.24 11.16 R C *Richmond Berkeley C News 1993 04 08.24 11.04 I C *Richmond Berkeley C News 1993 04 08.32 11.84 U *Richmond Berkeley C News 1993 04 08.32 12.21 B *Richmond Berkeley C News 1993 04 08.32 11.62 V *Richmond Berkeley C News 1993 04 08.32 11.24 R C *Richmond Berkeley C News 1993 04 08.32 11.12 I C *Richmond Berkeley C News 1993 04 08.417 11.9 mv TB Kiyota, S. 20cm refl. Mail(kat) 1993 04 08.451 11.3 mv TB Iida, M. Mail(kat) 1993 04 08.451 &1 (tentative correction +0.4, original 10.9 mv GSC) 1993 04 08.501 11.8 mv TB Sekino, Y. 28cm refl. Mail(kat) 1993 04 08.521 11.5 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 08.528 11.6 C TB Kushida, Y. 40cm refl, CCD Mail(kat) 1993 04 08.576 11.68 V Okyudo, M and 60cm refl. + CCD IAUC 5760 1993 04 08.576 &1 Ishida, T. Nishi-Harima Obs. 1993 04 08.615 11.9 mv TB Watanabe, Y. 12cm refl. Mail(kat) 1993 04 08.620 12.05 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 08.620 11.56 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 08.620 11.19 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 08.620 11.04 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 08.625 11.7 mv TB Ohkura, N. 35.5cm SCT 98x Mail(kat) 1993 04 08.646 11.70 V HC Ohkura, N. and 35-cm SCT Mail(kat) 1993 04 08.646 &1 Ohshima, O. 1993 04 08.646 12.11 B HC Ohkura, N. and 35-cm SCT Mail(kat) 1993 04 08.646 &1 Ohshima, O. 1993 04 08.692 11.5 mv TB Watanabe, T. 10cm refl. Mail(kat) 1993 04 08.800 11.4 mv TA Tanti, T. Mail(gmh) 1993 04 08.833 11.9 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 08.838 11.8 mv TA Midtskogen, O. 31.6-cm refl. 130x Mail(grl) 1993 04 08.840 11.5 mv TA Bengtsson, H. Nova(gmh) 1993 04 08.858 11.6 mv TA Andersson, K.-G. 25.4-cm refl. Mail(grl) 1993 04 08.864 11.5 mv TA Westlund, M. 20.3-cm SCT Nova(gmh) 1993 04 08.868 11.4 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 08.896 12.0 mv A2 Carvajal, J 31-cm f/4.5 refl. Mail(grl) 1993 04 08.90 12.08 B Mikuz, H. et al. Slovenia IAUC 5809 1993 04 08.90 11.64 V Mikuz, H. et al. Slovenia IAUC 5809 1993 04 08.90 11.12 R Mikuz, H. et al. Slovenia IAUC 5809 1993 04 08.90 11.02 I Mikuz, H. et al. Slovenia IAUC 5809 1993 04 08.901 11.8 mv TA Ewen-Smith, B. Nova(gmh) 1993 04 08.91 11.47 V Morrison et al. IAUC 5767 1993 04 08.917 12.0 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 04 08.917 &1 Time corr. from Apr 8.83, mv from 12.1 Mail(grl) 1993 04 08.917 11.9 C A2 Rodriguez, D. 20-cm f/4 refl. + CCD Mail(grl) 1993 04 08.917 &2 Delete observation from 1993 04 10.87 Mail(grl) 1993 04 08.938 11.8 mv TB Schmeer, P. 20cm SCT Mail(sch) 1993 04 08.948 11.6 mv TA+ Skjaeraasen, O. 20.3-cm SCT 77x Mail(grl) 1993 04 08.98 11.78 U *Penny LaPalma Mail(rw) 1993 04 08.98 11.95 B *Penny LaPalma Mail(rw) 1993 04 08.98 11.50 V *Penny LaPalma Mail(rw) 1993 04 08.98 11.11 R J *Penny LaPalma Mail(rw) 1993 04 08.98 10.96 I J *Penny LaPalma Mail(rw) 1993 04 08.985 11.6 mv TA+ Skjaeraasen, O. 20.3-cm SCT 77x Mail(grl) 1993 04 09.00 12.04 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5758 1993 04 09.00 11.21 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5758 1993 04 09.028 11.6 mv TA+ Skjaeraasen, O. 20.3-cm SCT 77x Mail(grl) 1993 04 09.04 11.5 mv TA Bengtsson, H. 15-cm refl. Nova(gmh) 1993 04 09.10 11.37 V *Appleton Mail(gav) 1993 04 09.10 11.87 B *Appleton Mail(gav) 1993 04 09.10 11.04 R C *Appleton Mail(gav) 1993 04 09.10 10.93 I C *Appleton Mail(gav) 1993 04 09.101 11.46 mv TB Bryan, J. 25cm 120x Mail(bry) 1993 04 09.14 11.53 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 09.163 11.7 mv AC Benge USA-TX Mail(rw) 1993 04 09.190 11.8 mv TA Hornby, P. Nova(gmh) 1993 04 09.20 11.5 mv TB Dillon, W. G. IAUC 5757 1993 04 09.21 12.0 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 09.25 11.4 mv Royer, R. IAUC 5757 1993 04 09.28 11.46 V HC McDavid, D. 40-cm + CCD Mail 1993 04 09.28 11.93 B HC McDavid, D. 40-cm + CCD Mail 1993 04 09.443 11.6: mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 09.469 11.5 mv TB Sekino, Y. 28cm refl. Mail(kat) 1993 04 09.479 11.4 mv TB Makiguchi, N. 25cm refl. Mail(kat) 1993 04 09.481 11.5 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 09.496 11.4 C TB Kushida, Y. 40cm refl. CCD Mail(kat) 1993 04 09.503 11.5 mv TB Takahashi, S. 20cm refl. Mail(kat) 1993 04 09.507 11.7 mv TB Funada, M. 13cm refl. 151x Mail(kat) 1993 04 09.507 11.7 mv TB Kiyota, S. 20cm refl. Mail(kat) 1993 04 09.523 11.7 mv TB Iida, M. Mail(kat) 1993 04 09.541 11.46 V Kato, T. 60cm, CCD IAUC 5760 1993 04 09.559 11.45 C TB Fujita, Y. 60cm, CCD no filter Mail(kat) 1993 04 09.569 11.8 mv TB Shirota, E. 20cm refl. Mail(kat) 1993 04 09.61 11.72 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 09.61 11.99 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 09.61 11.43 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 09.61 10.96 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 09.61 10.71 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 09.626 11.3 mv TB Watanabe, T. 10cm refl. Mail(kat) 1993 04 09.635 11.6 mv TB Watanabe, Y. 20cm SCT Mail(kat) 1993 04 09.659 11.52 V Okyudo, M and 60cm refl. + CCD IAUC 5760 1993 04 09.659 &1 Ishida, T. Nishi-Harima Obs. 1993 04 09.686 11.6 mv TB Shioi, H. 20cm refl. Mail(kat) 1993 04 09.800 11.5 mv TA Tanti, T. Mail(gmh) 1993 04 09.817 11.7 mv AC Moeller, M. 15.0-cm refl. Mail(jah) 1993 04 09.830 10.9 mv TA Aldrich, T. Nova(gmh) 1993 04 09.833 11.3 mv TB Bremseth, P.-J. 20.3-cm SCT 111x Mail(grl) 1993 04 09.835 11.5 mv TA Westlund, M. Nova(gmh) 1993 04 09.837 11.6 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 09.840 11.9 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 09.896 12.0 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 04 09.902 11.4 mv TA Midtskogen, O. 15.0-cm refl. Mail(grl) 1993 04 09.906 11.7 mv Smith, P. Mail(gmh) 1993 04 09.917 12.0 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 04 09.917 &1 Time corrected from 1993 04 09.83 Mail(grl) 1993 04 09.920 10.9 mv TA Gill, M. Mail(gmh) 1993 04 09.93 11.6 mv TA Ekloef, A. 11-cm refl. Mail(grl) 1993 04 09.933 11.3 mv TA Bremseth, P. Mail(gmh) 1993 04 09.938 11.5 mv Washington, C. Mail(gmh) 1993 04 09.941 11.9 mv TA Hurst, G. Nova(gmh) 1993 04 09.951 11.5 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 09.962 11.4 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 10.060 11.6 mv TB Schmeer, P. 20cm SCT Mail(sch) 1993 04 10.07 11.70 U *Penny LaPalma Mail(rw) 1993 04 10.07 11.82 B *Penny LaPalma Mail(rw) 1993 04 10.07 11.39 V *Penny LaPalma Mail(rw) 1993 04 10.07 11.04 R J *Penny LaPalma Mail(rw) 1993 04 10.07 10.91 I J *Penny LaPalma Mail(rw) 1993 04 10.083 11.4 mv TA Girard, P. Mail(gmh) 1993 04 10.093 11.4 mv TA Day, J. Nova(gmh) 1993 04 10.1 11.37 V Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 10.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 10.1 11.87 B Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 10.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 10.1 11.04 R Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 10.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 10.1 10.93 I Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 10.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 10.108 11.40 mv TB Bryan, J. 25cm 80x Mail(bry) 1993 04 10.115 11.7 mv AC Benge USA-TX Mail(rw) 1993 04 10.120 11.2 mv TA Panther, R. Mail(gmh) 1993 04 10.13 11.32 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 10.14 11.2 mv TB Levy Mail(rw) 1993 04 10.14 11.81 B Mutel, R. and Univ. of Iowa IAUC 5760 1993 04 10.14 &1 Sauerbrei, P. 1993 04 10.14 11.42 V Mutel, R. and Univ. of Iowa IAUC 5760 1993 04 10.14 &1 Sauerbrei, P. 1993 04 10.14 10.81 R J Mutel, R. and Univ. of Iowa IAUC 5760 1993 04 10.14 &1 Sauerbrei, P. 1993 04 10.14 10.70 I J Mutel, R. and Univ. of Iowa IAUC 5760 1993 04 10.14 &1 Sauerbrei, P. 1993 04 10.15 11.6 mv T1 Flynn, E. W. 25-cm refl. Mail(grl) 1993 04 10.15 &1 St. Louis, MO, USA 1993 04 10.16 11.69 U *Penny LaPalma Mail(rw) 1993 04 10.16 11.82 B *Penny LaPalma Mail(rw) 1993 04 10.16 11.36 V *Penny LaPalma Mail(rw) 1993 04 10.16 11.02 R J *Penny LaPalma Mail(rw) 1993 04 10.16 10.94 I J *Penny LaPalma Mail(rw) 1993 04 10.18 11.3 mv TB Dillon, W. G. 28cm SCT Mail 1993 04 10.18 11.7 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 10.2 11.46 V *CfA Mail(gav) 1993 04 10.2 11.84 B *CfA Mail(gav) 1993 04 10.2 11.05 R C *CfA Mail(gav) 1993 04 10.2 10.90 I C *CfA Mail(gav) 1993 04 10.21 11.69 U Richmond Berkeley, bad weather News 1993 04 10.21 11.86 B Richmond Berkeley, bad weather News 1993 04 10.21 11.37 V Richmond Berkeley, bad weather News 1993 04 10.21 11.04 R C Richmond Berkeley, bad weather News 1993 04 10.21 10.90 I C Richmond Berkeley, bad weather News 1993 04 10.23 11.80 U *Richmond Berkeley, C News 1993 04 10.23 11.96 B *Richmond Berkeley, C News 1993 04 10.23 11.30 V *Richmond Berkeley, C News 1993 04 10.23 11.01 R C *Richmond Berkeley, C News 1993 04 10.23 10.88 I C *Richmond Berkeley, C News 1993 04 10.28 11.34 V HC McDavid, D. 40-cm + CCD Mail 1993 04 10.28 11.80 B HC McDavid, D. 40-cm + CCD Mail 1993 04 10.300 11.6 mv TA Hornby, P. Mail(gmh) 1993 04 10.40 11.87 U *Richmond Berkeley, C News 1993 04 10.40 12.02 B *Richmond Berkeley, C News 1993 04 10.40 11.35 V *Richmond Berkeley, C News 1993 04 10.40 11.04 R C *Richmond Berkeley, C News 1993 04 10.40 10.92 I C *Richmond Berkeley, C News 1993 04 10.422 11.4 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 10.437 11.1 mv TB Kiyota, S. 25cm SCT Mail(kat) 1993 04 10.459 11.2 mv TB Sekino, Y. 28cm refl. Mail(kat) 1993 04 10.467 11.6 mv TB Funada, M. 13cm refl. 151x Mail(kat) 1993 04 10.471 11.33 V Kato, Taichi 60cm, CCD Mail(kat) 1993 04 10.476 11.6 mv TB Makiguchi, N. 25cm refl. Mail(kat) 1993 04 10.493 10.91 I C Kato, Taichi 60cm, CCD Mail(kat) 1993 04 10.521 11.3 mv TB Hirosawa, K. 21cm refl. Mail(kat) 1993 04 10.529 11.78 B Kato, Taichi 60cm, CCD Mail(kat) 1993 04 10.530 11.83 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 10.530 11.31 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 10.530 10.98 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 10.530 10.85 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 10.554 11.33 C TB Fujita, Y. 60cm, CCD no filter Mail(kat) 1993 04 10.557 11.5 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 10.58 11.64 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 10.58 11.76 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 10.58 11.32 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 10.58 10.85 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 10.58 10.62 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 10.588 11.46 V Okyudo, M and 60cm refl. + CCD IAUC 5760 1993 04 10.588 &1 Ishida, T. Nishi-Harima Obs. 1993 04 10.591 11.4 mv TB Ohkura, N. 35.5cm SCT 98x Mail(kat) 1993 04 10.608 11.46 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 10.608 &1 Ishida, T. Nishi-Harima Obs. 1993 04 10.610 11.43 V HC Ohkura, N. and 35-cm SCT Mail(kat) 1993 04 10.610 &1 Ohshima, O. 1993 04 10.610 11.90 B HC Ohkura, N. and 35-cm SCT Mail(kat) 1993 04 10.610 &1 Ohshima, O. 1993 04 10.626 11.5 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 10.645 11.4 C TB Kushida, Y. 40cm refl. CCD Mail(kat) 1993 04 10.780 11.7 mv TB Yamada, M. 35cm SCT Mail(kat) 1993 04 10.782 11.66 U Lyuty, V. M. Ukraine News 1993 04 10.782 11.79 B Lyuty, V. M. Ukraine News 1993 04 10.782 11.31 V Lyuty, V. M. Ukraine News 1993 04 10.808 11.4 mv TB Schmeer, P. 20cm SCT Mail(sch) 1993 04 10.837 11.1 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 10.842 11.2 mv TB Bremseth, P.-J. 20.3-cm SCT 111x Mail(grl) 1993 04 10.845 11.5 mv TA Midtskogen, O. 31.6-cm refl. 62x Mail(grl) 1993 04 10.854 12.0 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 10.858 11.3 mv TA Andersson, K.-G. 25.4-cm refl. Mail(grl) 1993 04 10.86 11.72 U Shakhovskoy et al. Crimea 1.25-m News 1993 04 10.86 11.84 B Shakhovskoy et al. Crimea 1.25-m News 1993 04 10.86 11.30 V Shakhovskoy et al. Crimea 1.25-m News 1993 04 10.86 10.85 R J Shakhovskoy et al. Crimea 1.25-m News 1993 04 10.86 10.66 I J Shakhovskoy et al. Crimea 1.25-m News 1993 04 10.89 11.63 U *Rudd LaPalma Mail(rw) 1993 04 10.89 11.73 B *Rudd LaPalma Mail(rw) 1993 04 10.89 11.28 V *Rudd LaPalma Mail(rw) 1993 04 10.89 10.83 R J *Rudd LaPalma Mail(rw) 1993 04 10.89 10.78 I J *Rudd LaPalma Mail(rw) 1993 04 10.896 11.9 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 04 10.896 12.0 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 04 10.899 10.9 mv TA Gill, M. Mail(gmh) 1993 04 10.899 11.6 mv TA Ewen-Smith, B. Mail(gmh) 1993 04 10.91 11.08 V Hanzl, D. N. Copernicus Planet. IAUC 5760 1993 04 10.91 11.61 B Hanzl, D. N. Copernicus Planet. IAUC 5760 1993 04 10.91 11.23 V Morrison et al. LaPalma IAUC 5767 1993 04 10.92 11.26 V Mikolajewski, M. N. Copernicus Planet. IAUC 5760 1993 04 10.92 &1 Ruminski, K. 1993 04 10.92 11.72 B Mikolajewski, M. N. Copernicus Planet. IAUC 5760 1993 04 10.92 &1 Ruminski, K. 1993 04 10.92 11.55 U Mikolajewski, M. N. Copernicus Planet. IAUC 5760 1993 04 10.92 &1 Ruminski, K. 1993 04 10.92 10.75 R J Mikolajewski, M. N. Copernicus Planet. IAUC 5760 1993 04 10.92 &1 Ruminski, K. 1993 04 10.92 10.90 I J Mikolajewski, M. N. Copernicus Planet. IAUC 5760 1993 04 10.92 &1 Ruminski, K. 1993 04 10.920 11.4 mv TA+ Granslo, B. H. 20.3-cm refl. 135x Mail(grl) 1993 04 10.922 11.3 mv TA Andersen, O. I. 20.3-cm refl. 135x Mail(grl) 1993 04 10.93 11.63 U *Rudd LaPalma Mail(rw) 1993 04 10.93 11.72 B *Rudd LaPalma Mail(rw) 1993 04 10.93 11.30 V *Rudd LaPalma Mail(rw) 1993 04 10.93 10.83 R J *Rudd LaPalma Mail(rw) 1993 04 10.93 10.74 I J *Rudd LaPalma Mail(rw) 1993 04 10.96 11.6 mv Pietz, J. Mail(jah) 1993 04 11.01 11.65 U *Rudd LaPalma Mail(rw) 1993 04 11.01 11.73 B *Rudd LaPalma Mail(rw) 1993 04 11.01 11.28 V *Rudd LaPalma Mail(rw) 1993 04 11.01 10.86 R J *Rudd LaPalma Mail(rw) 1993 04 11.01 10.82 I J *Rudd LaPalma Mail(rw) 1993 04 11.06 11.66 U *Rudd LaPalma Mail(rw) 1993 04 11.06 11.74 B *Rudd LaPalma Mail(rw) 1993 04 11.06 11.32 V *Rudd LaPalma Mail(rw) 1993 04 11.06 10.85 R J *Rudd LaPalma Mail(rw) 1993 04 11.06 10.81 I J *Rudd LaPalma Mail(rw) 1993 04 11.09 11.1 mv TB Buta, R. 25cm refr. Mail(gav) 1993 04 11.095 11.43 mv TB Bryan, J. 25cm 80x Mail(bry) 1993 04 11.10 11.24 C HC Ferguson, D. C., 10-cm refr.+LYNXX CCD Mail(grl) 1993 04 11.10 &1 Morton, T. L., Baldwin Wallace Coll. 1993 04 11.10 &2 and Snyder, D. B. Berea, Ohio 1993 04 11.13 11.23 V HC McDavid, D. 40-cm + CCD Mail 1993 04 11.13 11.71 B HC McDavid, D. 40-cm + CCD Mail 1993 04 11.17 11.56 U Richmond Berkeley News 1993 04 11.17 11.72 B Richmond Berkeley News 1993 04 11.17 11.27 V Richmond Berkeley News 1993 04 11.17 10.94 R C Richmond Berkeley News 1993 04 11.17 10.79 I C Richmond Berkeley News 1993 04 11.17 11.7 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 11.21 10.9 mv TB Dillon B. 25cm SCT News 1993 04 11.21 11.25 V *Richmond Berkeley C News 1993 04 11.21 10.91 R C *Richmond Berkeley C News 1993 04 11.21 10.83 I C *Richmond Berkeley C News 1993 04 11.22 11.57 U Richmond Berkeley News 1993 04 11.22 11.71 B Richmond Berkeley News 1993 04 11.22 11.26 V Richmond Berkeley News 1993 04 11.22 10.93 R C Richmond Berkeley News 1993 04 11.22 10.78 I C Richmond Berkeley News 1993 04 11.260 11.6 mv TA Hornby, P. Mail(gmh) 1993 04 11.273 11.75 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 11.273 11.25 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 11.273 10.88 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 11.273 10.79 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 11.29 11.22 V HC McDavid, D. 40-cm + CCD Mail 1993 04 11.29 11.68 B HC McDavid, D. 40-cm + CCD Mail 1993 04 11.472 11.7 mv TB Yamaoka, H. 31cm refl. Mail(kat) 1993 04 11.59 11.48 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 11.59 11.70 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 11.59 11.21 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 11.59 10.69 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 11.59 10.53 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 11.591 11.1 C TB Kushida, Y. 40cm refl. CCD Mail(kat) 1993 04 11.659 11.30 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 11.659 &1 Ishida, T. Nishi-Harima Obs. 1993 04 11.837 10.9 mv TB Bremseth, P.-J. 20.3-cm SCT 111x Mail(grl) 1993 04 11.881 10.9 mv AC Moeller, M. 15.0-cm refl. Mail(jah) 1993 04 11.883 11.1 mv TA+ Granslo, B. H. 15.2-cm refl. 74x Mail(grl) 1993 04 11.885 11.4 mv TA Andersen, O. I. 15.2-cm refl. 74x Mail(grl) 1993 04 11.894 11.60 U Lyuty, V. M. Ukraine News 1993 04 11.894 11.70 B Lyuty, V. M. Ukraine News 1993 04 11.894 11.21 V Lyuty, V. M. Ukraine News 1993 04 11.896 11.4 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 04 11.896 10.9 mv TA Gill, M. Mail(gmh) 1993 04 11.896 11.6 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 04 11.903 11.0 mv TA Midtskogen, O. 31.6-cm refl. 62x Mail(grl) 1993 04 11.913 11.3 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 11.93 11.64 B *Goudfrooij LaPalma Mail(rw) 1993 04 11.93 11.17 V *Goudfrooij LaPalma Mail(rw) 1993 04 11.93 10.71 I J *Goudfrooij LaPalma Mail(rw) 1993 04 11.941 11.4 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 11.947 11.8 mv TA Hurst, G. Nova(gmh) 1993 04 11.980 11.3 mv TA Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 12.00 11.74 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5760 1993 04 12.00 10.87 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5760 1993 04 12.00 10.9 mv TA Smedstuen, O. 25.4-cm refl. 108x Mail(grl) 1993 04 12.00 &1 Haagaar Obs, Norway 1993 04 12.00 11.2 mv TA Skartlien, R. 25.4-cm refl. 108x Mail(grl) 1993 04 12.12 11.5 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 12.129 11.3 mv TA Worraker, W. Mail(gmh) 1993 04 12.129 11.6 mv AC Benge USA-TX Mail(rw) 1993 04 12.132 11.36 mv TB Bryan, J. 25cm 80x Mail(bry) 1993 04 12.160 10.7 mv TA Panther, R. Mail(gmh) 1993 04 12.21 11.46 U Richmond Berkeley News 1993 04 12.21 11.61 B Richmond Berkeley News 1993 04 12.21 11.14 V Richmond Berkeley News 1993 04 12.21 10.83 R C Richmond Berkeley News 1993 04 12.21 10.70 I C Richmond Berkeley News 1993 04 12.22 11.18 V Zurek. D. R. Univ. Victoria IAUC 5761 1993 04 12.22 &1 et al. 50cm refl. CCD 1993 04 12.22 11.71 B Zurek. D. R. Univ. Victoria IAUC 5761 1993 04 12.22 &1 et al. 50cm refl. CCD 1993 04 12.22 10.83 R C Zurek. D. R. Univ. Victoria IAUC 5761 1993 04 12.22 &1 et al. 50cm refl. CCD 1993 04 12.22 10.70 I C Zurek. D. R. Univ. Victoria IAUC 5761 1993 04 12.22 &1 et al. 50cm refl. CCD 1993 04 12.429 11.2 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 12.476 11.11 V Kato, Taichi 60cm, CCD IAUC 5760 1993 04 12.495 11.15 C TB Fujita, Y. 60cm, CCD nofilter Mail(kat) 1993 04 12.495 &1 Kuma Kogen Obs. 1993 04 12.499 10.71 I C Kato, Taichi 60cm, CCD IAUC 5760 1993 04 12.508 11.7 mv TB Iida, M. Mail(kat) 1993 04 12.529 11.4 mv TB Yamada, M. Mail(kat) 1993 04 12.537 11.57 B Kato, Taichi 60cm, CCD IAUC 5760 1993 04 12.557 11.24 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 12.557 &1 Ishida, T. Nishi-Harima Obs. 1993 04 12.590 11.0 p TB Ohno, I. 20cm refl. f/8 Mail(kat) 1993 04 12.590 &1 Fuji Color G800 1993 04 12.594 11.2 mv TB Hirosawa, K. 21cm refl. Mail(kat) 1993 04 12.639 11.59 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 12.639 11.12 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 12.639 10.77 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 12.639 10.65 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 12.64 11.41 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 12.64 11.62 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 12.64 11.11 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 12.64 10.61 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 12.64 10.45 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 12.700 11.1 C TB Kushida, Y. 40cm refl. CCD Mail(kat) 1993 04 12.833 10.6 mv AC Moeller, M. 15.0-cm refl. Mail(jah) 1993 04 12.851 10.5 mv TB Bremseth, P.-J. 20.3-cm SCT 80x Mail(grl) 1993 04 12.854 10.6 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 12.859 11.0 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 12.86 11.1 mv TA Bengtsson, H. 15-cm refl. Mail(grl) 1993 04 12.865 11.4 mv TA Westlund, M. 20.3-cm SCT Mail(grl) 1993 04 12.87 11.51 B *Goudfrooij LaPalma Mail(rw) 1993 04 12.87 11.10 V *Goudfrooij LaPalma Mail(rw) 1993 04 12.87 10.66 I J *Goudfrooij LaPalma Mail(rw) 1993 04 12.875 10.5 mv TA Storey, D. Mail(gmh) 1993 04 12.884 10.7 mv TA+ Midtskogen, O. 31.6-cm refl. 62x Mail(grl) 1993 04 12.885 11.1 mv TA Lancashire, J. Mail(gmh) 1993 04 12.903 10.8 mv TA Worraker, W. Mail(gmh) 1993 04 12.910 11.2 mv TB Schmeer, P. 20cm SCT Mail(sch) 1993 04 12.917 10.8 mv TA Godwin, S. Mail(gmh) 1993 04 12.918 11.3 mv TA Ewen-Smith Mail(gmh) 1993 04 12.934 11.4 mv TA Westlund, M. 20.3-cm SCT Mail(grl) 1993 04 12.938 11.4 mv TA Shanklin, J. Mail(gmh) 1993 04 13.00 11.53 B *Goudfrooij LaPalma Mail(rw) 1993 04 13.00 11.08 V *Goudfrooij LaPalma Mail(rw) 1993 04 13.00 10.62 I J *Goudfrooij LaPalma Mail(rw) 1993 04 13.03 11.2 mv TA Bengtsson, H. 15-cm refl. Mail(grl) 1993 04 13.042 10.6 mv TB Kratz, D. 20cm f/3.5 79x News 1993 04 13.1 11.07 V Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 13.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 13.1 11.58 B Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 13.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 13.1 10.75 R Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 13.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 13.1 10.64 I Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 13.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 13.131 11.2 mv TB Schmeer, P. 20cm SCT Mail(sch) 1993 04 13.18 11.01 V Zurek. D. R. Univ. Victoria IAUC 5761 1993 04 13.18 &1 et al. 50cm refl. CCD 1993 04 13.18 11.50 B Zurek. D. R. Univ. Victoria IAUC 5761 1993 04 13.18 &1 et al. 50cm refl. CCD 1993 04 13.18 10.66 R C Zurek. D. R. Univ. Victoria IAUC 5761 1993 04 13.18 &1 et al. 50cm refl. CCD 1993 04 13.18 10.66 I C Zurek. D. R. Univ. Victoria IAUC 5761 1993 04 13.18 &1 et al. 50cm refl. CCD 1993 04 13.2 11.64 U *Richmond, M. 51-cm C News 1993 04 13.2 &1 Raw measurements 1993 04 13.2 11.69 B *Richmond, M. 51-cm C News 1993 04 13.2 11.04 V *Richmond, M. 51-cm C News 1993 04 13.2 10.72 R *Richmond, M. 51-cm C News 1993 04 13.2 10.64 I *Richmond, M. 51-cm C News 1993 04 13.2 11.57 U Richmond, M. 76-cm News 1993 04 13.2 &1 Raw measurements 1993 04 13.2 11.53 B Richmond, M. 76-cm News 1993 04 13.2 11.04 V Richmond, M. 76-cm News 1993 04 13.2 10.65 R Richmond, M. 76-cm News 1993 04 13.2 10.61 I Richmond, M. 76-cm News 1993 04 13.2 11.0: mv TB+*Sheaffer, R. 32-cm refl. News 1993 04 13.3 11.64 U *Richmond, M. 76-cm C News 1993 04 13.3 11.69 B *Richmond, M. 76-cm C News 1993 04 13.3 11.05 V *Richmond, M. 76-cm C News 1993 04 13.3 10.73 R C *Richmond, M. 76-cm C News 1993 04 13.3 10.65 I C *Richmond, M. 76-cm C News 1993 04 13.3 11.0: mv TB+*Sheaffer, R. 32-cm refl. News 1993 04 13.3 11.05 V *CfA Mail(gav) 1993 04 13.3 11.55 B *CfA Mail(gav) 1993 04 13.3 10.72 R C *CfA Mail(gav) 1993 04 13.3 10.62 I C *CfA Mail(gav) 1993 04 13.469 10.9 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 13.577 11.17 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 13.577 &1 Ishida, T. Nishi-Harima Obs. 1993 04 13.598 11.0 C TB Kushida, Y. 40cm CCD no filter Mail(kat) 1993 04 13.61 11.33 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 13.61 11.51 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 13.61 11.06 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 13.61 10.58 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 13.61 10.37 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 13.626 11.1 mv TB Watanabe, T. 10cm refl. 80x Mail(kat) 1993 04 13.81 11.48 U Shakhovskoy et al. Crimea 1.25-m News 1993 04 13.81 11.58 B Shakhovskoy et al. Crimea 1.25-m News 1993 04 13.81 11.02 V Shakhovskoy et al. Crimea 1.25-m News 1993 04 13.81 10.60 R J Shakhovskoy et al. Crimea 1.25-m News 1993 04 13.81 10.45 I J Shakhovskoy et al. Crimea 1.25-m News 1993 04 13.84 11.07 V Mikolajewski, M. N. Copernicus Uni, IAUC 5765 1993 04 13.84 &1 et al. Torun 1993 04 13.84 11.63 B Mikolajewski, M. N. Copernicus Uni, IAUC 5765 1993 04 13.84 &1 et al. Torun 1993 04 13.84 10.57 R J Mikolajewski, M. N. Copernicus Uni, IAUC 5765 1993 04 13.84 &1 et al. Torun 1993 04 13.84 10.65 I J Mikolajewski, M. N. Copernicus Uni, IAUC 5765 1993 04 13.84 &1 et al. Torun 1993 04 13.840 10.5 mv TB Bremseth, P.-J. 20.3-cm SCT 80x Mail(grl) 1993 04 13.842 11.1 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 13.848 11.1 mv TA Westlund, M. 20.3-cm SCT Mail(grl) 1993 04 13.875 10.6 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 13.875 11.3 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 13.88 11.48 B *Goudfrooij LaPalma Mail(rw) 1993 04 13.88 11.01 V *Goudfrooij LaPalma Mail(rw) 1993 04 13.88 10.55 I J *Goudfrooij LaPalma Mail(rw) 1993 04 13.885 10.6 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 04 13.892 10.6 mv TA+ Midtskogen, O. 31.6-cm refl. 62x Mail(grl) 1993 04 13.892 10.8 mv TA+ Skjaeraasen, O. 20.3-cm SCT 77x Mail(grl) 1993 04 13.917 10.6 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 04 13.917 11.3 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 13.92 10.8 mv Pietz, J. Mail(jah) 1993 04 13.937 11.3 mv TA Westlund, M. 20.3-cm SCT Mail(grl) 1993 04 13.958 11.3 mv TA Andersson, K.-G. 15-cm refl. Mail(gmh) 1993 04 13.970 10.9 mv TA Ewn-Smith, B. Mail(gmh) 1993 04 13.994 11.1 mv TB Schmeer, P. 20cm SCT Mail(sch) 1993 04 14.00 11.59 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5765 1993 04 14.00 10.68 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5765 1993 04 14.01 10.9 mv Schlyter, P. 10-cm refl. Mail(ben) 1993 04 14.031 10.6 mv TB Kratz, D. 20cm f/3.5 79x News 1993 04 14.04 11.46 B *Goudfrooij LaPalma Mail(rw) 1993 04 14.04 11.00 V *Goudfrooij LaPalma Mail(rw) 1993 04 14.04 10.54 I J *Goudfrooij LaPalma Mail(rw) 1993 04 14.05 11.1 mv TB Wijers News 1993 04 14.05 11.2 mv TB Richmond News 1993 04 14.10 11.0 mv TB Kratz Mail(rw) 1993 04 14.10 10.96 C HC Ferguson, D. C., 10-cm refr.+LYNXX CCD Mail(grl) 1993 04 14.10 &1 Morton, T. L., Baldwin Wallace Coll. 1993 04 14.10 &2 and Snyder, D. B. Berea, Ohio 1993 04 14.13 11.0 mv TB Beauchamp Mail(rw) 1993 04 14.16 11.41 U Schulman Mail(rw) 1993 04 14.16 11.44 B Schulman Mail(rw) 1993 04 14.16 11.00 V Schulman Mail(rw) 1993 04 14.16 10.66 R Schulman Mail(rw) 1993 04 14.16 10.54 I Schulman Mail(rw) 1993 04 14.167 10.7 mv TB+ Sheaffer, R. 31cm refl. News 1993 04 14.17 10.22 J Romanishin IAUC 5773 1993 04 14.17 10.15 H Romanishin IAUC 5773 1993 04 14.17 9.91 K Romanishin IAUC 5773 1993 04 14.2 11.34 U Richmond, M. 51-cm News 1993 04 14.2 &1 Raw measurements 1993 04 14.2 11.46 B Richmond, M. 51-cm News 1993 04 14.2 10.98 V Richmond, M. 51-cm News 1993 04 14.2 10.70 R Richmond, M. 51-cm News 1993 04 14.2 10.57 I Richmond, M. 51-cm News 1993 04 14.2 11.56 B *Richmond, M. 76-cm C News 1993 04 14.2 10.96 V *Richmond, M. 76-cm C News 1993 04 14.2 10.63 R *Richmond, M. 76-cm C News 1993 04 14.2 10.56 I *Richmond, M. 76-cm C News 1993 04 14.2 10.98 V *CfA Mail(gav) 1993 04 14.2 11.47 B *CfA Mail(gav) 1993 04 14.2 10.64 R C *CfA Mail(gav) 1993 04 14.2 10.55 I C *CfA Mail(gav) 1993 04 14.210 11.6 mv TA Hornby, P. Mail(gmh) 1993 04 14.3 11.63 U *Richmond, M. 76-cm C News 1993 04 14.3 11.59 B *Richmond, M. 76-cm C News 1993 04 14.3 10.99 V *Richmond, M. 76-cm C News 1993 04 14.3 10.66 R *Richmond, M. 76-cm C News 1993 04 14.3 10.59 I *Richmond, M. 76-cm C News 1993 04 14.437 10.8 mv TB Makiguchi, N. 25-cm refl. Mail(kat) 1993 04 14.444 11.4: mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 14.446 10.99 C TB Fujita, Y. 60cm CCD no filter Mail(kat) 1993 04 14.446 &1 Kuma Kogen Obs. 1993 04 14.457 11.0 C TB Kushida, Y. 40cm CCD no filter Mail(kat) 1993 04 14.476 11.4 mv TB Iida, M. Mail(kat) 1993 04 14.523 11.2: mv TB Yamada, M. 35.5cm SCT Mail(kat) 1993 04 14.546 11.0 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 14.551 11.47 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 14.551 10.97 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 14.551 10.63 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 14.551 10.53 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 14.583 11.1 mv TB Ohkura, N. 35.5cm SCT 98x Mail(kat) 1993 04 14.599 11.1 mv TB Funada, M. 13cm refl. 151x Mail(kat) 1993 04 14.62 11.31 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 14.62 11.46 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 14.62 10.96 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 14.62 10.45 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 14.62 10.28 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 14.620 10.9 mv TB Shioi, H. 20cm refl. Mail(kat) 1993 04 14.628 11.03 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 14.628 &1 Ishida, T. Nishi-Harima Obs. 1993 04 14.630 11.2 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 14.653 10.9 mv TB Shioi, H. 20cm refl. Mail(kat) 1993 04 14.750 10.9 mv TB Kiyota, S. 20cm refl. Mail(kat) 1993 04 14.82 10.8 mv Pietz, J. Mail(jah) 1993 04 14.845 10.5 mv TB Bremseth, P.-J. 20.3-cm SCT 80x Mail(grl) 1993 04 14.846 11.2 mv TB Schmeer, P. 20cm SCT Mail(sch) 1993 04 14.847 11.0 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 14.864 10.9 mv TA Day, J. Mail(gmh) 1993 04 14.875 10.7 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 14.88 11.41 B *Goudfrooij LaPalma Mail(rw) 1993 04 14.88 10.94 V *Goudfrooij LaPalma Mail(rw) 1993 04 14.88 10.52 I J *Goudfrooij LaPalma Mail(rw) 1993 04 14.885 10.7 C A2 Rodriguez, D. 20-cm f/4 refl.+ CCD Mail(grl) 1993 04 14.885 &1 Delete observation from 1993 04 16.89 Mail(grl) 1993 04 14.883 10.6 mv TA Poyner, G. 40-cm refl. Mail(poy) 1993 04 14.89 10.88 V Hanzl, N. N.Copernicus Obs. IAUC 5763 1993 04 14.89 11.44 B Hanzl, N. N.Copernicus Obs. IAUC 5763 1993 04 14.894 10.7 mv TA Worraker, W. Mail(gmh) 1993 04 14.896 10.5 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 04 14.899 10.6 mv TA Gill, M. Mail(gmh) 1993 04 14.899 11.7 mv TA Rowlands, J. Mail(gmh) 1993 04 14.90 11.4 mv TA Ekloef, A. 11-cm refl. Mail(ben) 1993 04 14.904 10.7 mv TA+ Midtskogen, O. 31.6-cm refl. 62x Mail(grl) 1993 04 14.91 10.82 V Kulesza, B. N.Copernicus Obs. IAUC 5765 1993 04 14.91 11.37 B Kulesza, B. N.Copernicus Obs. IAUC 5763 1993 04 14.91 &1 revised IAUC 5765 1993 04 14.929 10.5 mv TA Storey, D. Mail(gmh) 1993 04 14.93 10.94 V Ruminski, K. and N.Copernicus Obs. IAUC 5765 1993 04 14.93 &1 Staniewski 1993 04 14.93 11.45 B Ruminski, K. and N.Copernicus Obs. IAUC 5765 1993 04 14.93 &1 Staniewski 1993 04 14.93 11.39 U Ruminski, K. and N.Copernicus Obs. IAUC 5765 1993 04 14.93 &1 Staniewski 1993 04 14.93 10.46 R J Ruminski, K. and N.Copernicus Obs. IAUC 5765 1993 04 14.93 &1 Staniewski 1993 04 14.93 10.41 I J Ruminski, K. and N.Copernicus Obs. IAUC 5765 1993 04 14.93 &1 Staniewski 1993 04 14.934 11.5 mv TA Hurst, G. Mail(gmh) 1993 04 14.949 9.99 J Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 14.949 &1 Kidger, M. Gonergrat, poor sky 1993 04 14.949 9.92 H Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 14.949 &1 Kidger, M. Gonergrat, poor sky 1993 04 14.949 9.71 K Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 14.949 &1 Kidger, M. Gonergrat, poor sky 1993 04 14.98 11.40 B *Goudfrooij LaPalma Mail(rw) 1993 04 14.98 10.93 V *Goudfrooij LaPalma Mail(rw) 1993 04 14.98 10.45 I J *Goudfrooij LaPalma Mail(rw) 1993 04 15.006 11.2 mv TA+ Granslo, B. H. 20.3-cm SCT 80x Mail(grl) 1993 04 15.08 11.54 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5765 1993 04 15.08 10.61 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5765 1993 04 15.101 11.2 mv TB Bryan, J. 25cm 80x Mail(bry) 1993 04 15.15 10.9 mv TB Beauchamp Mail(rw) 1993 04 15.15 10.18 J Romanishin IAUC 5773 1993 04 15.15 10.15 H Romanishin IAUC 5773 1993 04 15.15 9.87 K Romanishin IAUC 5773 1993 04 15.15 11.34 U Schulman Mail(rw) 1993 04 15.15 11.44 B Schulman Mail(rw) 1993 04 15.15 10.91 V Schulman Mail(rw) 1993 04 15.15 10.60 R Schulman Mail(rw) 1993 04 15.15 10.50 I Schulman Mail(rw) 1993 04 15.18 10.6 mv TB Dillon, B. 28cm SCT News 1993 04 15.18 10.91 V HC McDavid, D. 40-cm + CCD Mail 1993 04 15.18 11.39 B HC McDavid, D. 40-cm + CCD Mail 1993 04 15.444 10.5 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 15.463 11.44 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 15.463 10.93 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 15.463 10.58 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 15.463 10.47 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 15.469 11.1 mv TB Sugai, H. 30-cm refl. Mail(kat) 1993 04 15.484 11.0 C TB Kushida, Y. 40cm CCD no filter Mail(kat) 1993 04 15.494 11.3 mv TB Iida, M. Mail(kat) 1993 04 15.499 10.9 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 15.531 10.9 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 15.59 11.33 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 15.59 11.42 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 15.59 10.91 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 15.59 10.43 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 15.59 10.25 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 15.603 10.4 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 15.642 10.8 p TB Ohno, I. 20cm refl. f/8 Mail(kat) 1993 04 15.642 &1 Fuji Color G400 1993 04 15.810 10.6 mv TA Tanti, T. Mail(gmh) 1993 04 15.83 10.6 mv AC Moeller, M. 15.0-cm refl. Mail(jah) 1993 04 15.833 10.5 mv TB Bremseth, P.-J. 20.3-cm SCT 80x Mail(grl) 1993 04 15.86 11.0 mv TA Bengtsson, H. 15-cm refl. Mail(grl) 1993 04 15.864 10.8 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 15.864 10.12 J Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 15.864 &1 Kidger, M. Gonergrat 1993 04 15.865 10.9 mv TA Hurst, G. Mail(gmh) 1993 04 15.868 11.2 mv TB Schmeer, P. 20cm SCT Mail(sch) 1993 04 15.87 10.87 V Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 15.87 11.41 B Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 15.87 11.40 U Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 15.87 10.36 R J Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 15.87 10.47 I J Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 15.870 10.6 mv TA McKim, R. Mail(gmh) 1993 04 15.875 10.2 mv A2 Ripero, J. 33.5-cm f/5 refl. Mail(grl) 1993 04 15.875 10.9 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 15.875 &1 Delete obs. by Andersson, K. from 1993 04 15.917 1993 04 15.88 11.38 B *Goudfrooij LaPalma Mail(rw) 1993 04 15.88 10.90 V *Goudfrooij LaPalma Mail(rw) 1993 04 15.88 10.46 I J *Goudfrooij LaPalma Mail(rw) 1993 04 15.880 11.0 mv TA Lancashire, J. Mail(gmh) 1993 04 15.885 10.2 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 04 15.896 10.9 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 15.896 &1 Delete obs. by Andersson, K. from 1993 04 15.938 1993 04 15.917 10.8 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 04 15.924 11.1 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 15.937 10.26 J Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 15.937 &1 Kidger, M. Gonergrat 1993 04 15.937 10.07 H Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 15.937 &1 Kidger, M. Gonergrat 1993 04 15.937 9.83 K Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 15.937 &1 Kidger, M. Gonergrat 1993 04 15.940 10.6 mv TA Shanklin, J. Mail(gmh) 1993 04 15.964 10.13 J Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 15.964 &1 Kidger, M. Gonergrat 1993 04 15.964 10.04 H Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 15.964 &1 Kidger, M. Gonergrat 1993 04 15.964 9.78 K Morbidelli, L. and 1.5-m TIGRO IAUC 5763 1993 04 15.964 &1 Kidger, M. Gonergrat 1993 04 15.98 11.0 mv TA Bengtsson, H. 15-cm refl. Mail(grl) 1993 04 15.99 10.7 mv Pietz, J. Mail(jah) 1993 04 16.00 11.51 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5765 1993 04 16.00 10.58 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5765 1993 04 16.017 11.39 B Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 16.017 10.85 V Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 16.05 11.39 B *Goudfrooij LaPalma Mail(rw) 1993 04 16.05 10.90 V *Goudfrooij LaPalma Mail(rw) 1993 04 16.05 10.41 I J *Goudfrooij LaPalma Mail(rw) 1993 04 16.101 11.1 mv TB Bryan, J. 25cm 80x Mail(bry) 1993 04 16.12 11.1 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 16.127 11.6 mv AC Benge USA-TX Mail(rw) 1993 04 16.14 11.00 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 16.14 10.13 J Romanishin IAUC 5773 1993 04 16.14 10.09 H Romanishin IAUC 5773 1993 04 16.14 9.89 K Romanishin IAUC 5773 1993 04 16.15 11.35 U Tweedy, R. et al. KPNO CCD IAUC 5769 1993 04 16.15 11.40 B Tweedy, R. et al. KPNO CCD IAUC 5769 1993 04 16.15 10.88 V Tweedy, R. et al. KPNO CCD IAUC 5769 1993 04 16.15 10.55 R J Tweedy, R. et al. KPNO CCD IAUC 5769 1993 04 16.15 10.46 I J Tweedy, R. et al. KPNO CCD IAUC 5769 1993 04 16.181 10.9 mv TB Sheaffer, R. 32cm refl. News 1993 04 16.2 11.51 B *Richmond C News 1993 04 16.2 10.85 V *Richmond C News 1993 04 16.2 10.53 R C *Richmond C News 1993 04 16.2 10.44 I C *Richmond C News 1993 04 16.2 11.21 U Richmond News 1993 04 16.2 11.39 B Richmond News 1993 04 16.2 10.88 V Richmond News 1993 04 16.2 10.58 R C Richmond News 1993 04 16.2 10.45 I C Richmond News 1993 04 16.20 11.34 U Schulman Mail(rw) 1993 04 16.20 11.38 B Schulman Mail(rw) 1993 04 16.20 10.88 V Schulman Mail(rw) 1993 04 16.20 10.50 R Schulman Mail(rw) 1993 04 16.20 10.44 I Schulman Mail(rw) 1993 04 16.30 11.54 B *Richmond C News 1993 04 16.30 10.88 V *Richmond C News 1993 04 16.30 10.56 R C *Richmond C News 1993 04 16.30 10.47 I C *Richmond C News 1993 04 16.31 10.85 V HC McDavid, D. 40-cm + CCD Mail 1993 04 16.31 11.38 B HC McDavid, D. 40-cm + CCD Mail 1993 04 16.441 10.6 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 16.475 11.42 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 16.475 10.88 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 16.475 10.54 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 16.475 10.44 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 16.476 10.9 C TB Kushida, Y. 40cm CCD no filter Mail(kat) 1993 04 16.505 10.8 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 16.524 10.9 mv TB Funada, M. 13cm refl. 88x Mail(kat) 1993 04 16.55 11.29 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 16.55 11.43 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 16.55 10.84 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 16.55 10.39 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 16.55 10.21 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 16.548 10.8 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 16.601 10.88 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 16.601 &1 Ishida, T. Nishi-Harima Obs. 1993 04 16.82 10.6 mv Pietz, J. Mail(jah) 1993 04 16.86 11.54 U Shakhovskoy et al. Crimea 1.25-m News 1993 04 16.86 11.61 B Shakhovskoy et al. Crimea 1.25-m News 1993 04 16.86 10.95 V Shakhovskoy et al. Crimea 1.25-m News 1993 04 16.86 10.48 R J Shakhovskoy et al. Crimea 1.25-m News 1993 04 16.86 10.37 I J Shakhovskoy et al. Crimea 1.25-m News 1993 04 16.865 10.0 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 04 16.875 10.7 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 16.88 10.80 V Hanzl, D. N. Copernicus Obs. IAUC 5767 1993 04 16.88 11.39 B Hanzl, D. N. Copernicus Obs. IAUC 5767 1993 04 16.885 10.3 mv A2 Carvajal, J. 31-cm f/4.5 refl. Mail(grl) 1993 04 16.89 10.86 V Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 16.89 11.43 B Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 16.89 11.32 U Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 16.89 10.37 R J Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 16.89 10.44 I J Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 16.89 11.37 B *Goudfrooij LaPalma Mail(rw) 1993 04 16.89 10.87 V *Goudfrooij LaPalma Mail(rw) 1993 04 16.89 10.44 I J *Goudfrooij LaPalma Mail(rw) 1993 04 16.90 10.88 V Morrison et al. IAUC 5767 1993 04 16.910 10.6 mv TA Tanti, T. Mail(gmh) 1993 04 16.917 10.4 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 04 16.96 10.8 mv Pietz, J. Mail(jah) 1993 04 16.976 11.42 B Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 16.976 10.88 V Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 17.00 11.52 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5765 1993 04 17.00 10.55 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5765 1993 04 17.00 11.38 B *Goudfrooij LaPalma Mail(rw) 1993 04 17.00 10.85 V *Goudfrooij LaPalma Mail(rw) 1993 04 17.00 10.42 I J *Goudfrooij LaPalma Mail(rw) 1993 04 17.044 11.1 mv TB Schmeer, P. 20.3-cm SCT 133x Mail(sch) 1993 04 17.09 10.90 C HC Ferguson, D. C., 10-cm refr.+LYNXX CCD Mail(grl) 1993 04 17.09 &1 Morton, T. L., Baldwin Wallace Coll. 1993 04 17.09 &2 and Snyder, D. B. Berea, Ohio 1993 04 17.1 10.85 V Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 17.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 17.1 11.41 B Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 17.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 17.1 10.41 I Appleton, P. N and 0.6-m + CCD IAUC 5769 1993 04 17.1 &1 Eitter, J. J. Iowa State Univ. 1993 04 17.13 10.10 J Romanishin IAUC 5773 1993 04 17.13 10.07 H Romanishin IAUC 5773 1993 04 17.13 9.83 K Romanishin IAUC 5773 1993 04 17.15 10.97 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 17.16 10.9 mv T1 Flynn, E. M. 25-cm refl. Mail(grl) 1993 04 17.19 11.33 U Schulman Mail(rw) 1993 04 17.19 11.42 B Schulman Mail(rw) 1993 04 17.19 10.84 V Schulman Mail(rw) 1993 04 17.19 10.51 I Schulman Mail(rw) 1993 04 17.2 10.83 V *Richmond C News 1993 04 17.2 10.50 R C *Richmond C News 1993 04 17.2 10.44 I C *Richmond C News 1993 04 17.2 11.29 U Richmond News 1993 04 17.2 11.38 B Richmond News 1993 04 17.2 10.86 V Richmond News 1993 04 17.2 10.52 R C Richmond News 1993 04 17.2 10.45 I C Richmond News 1993 04 17.2 10.87 V *CfA Mail(gav) 1993 04 17.2 11.41 B *CfA Mail(gav) 1993 04 17.2 10.50 R C *CfA Mail(gav) 1993 04 17.2 10.46 I C *CfA Mail(gav) 1993 04 17.236 10.77 V HC Anderson, J. M. 40.6-cm refl. + PEP Mail(grl) 1993 04 17.236 &1 Univ. Northern Iowa 1993 04 17.236 &2 Hillside Observatory 1993 04 17.236 11.30 B HC Anderson, J. M. 40.6-cm refl. + PEP Mail(grl) 1993 04 17.236 &1 Univ. Northern Iowa 1993 04 17.236 &2 Hillside Observatory 1993 04 17.236 11.37 U HC Anderson, J. M. 40.6-cm refl. + PEP Mail(grl) 1993 04 17.236 &1 Univ. Northern Iowa 1993 04 17.236 &2 Hillside Observatory 1993 04 17.437 10.6 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 17.453 10.85 C TB Kushida, Y. 40cm CCD no filter Mail(kat) 1993 04 17.468 11.42 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 17.468 10.86 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 17.468 10.51 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 17.468 10.41 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 17.472 10.8 mv TB Sekino, Y. Mail(kat) 1993 04 17.476 10.9 mv TB Watanabe, S. (revised mag.) Mail(kat) 1993 04 17.479 10.9 mv TB Makiguchi, N. Mail(kat) 1993 04 17.500 11.0 mv TB Yamaoka, H. 20cm refl. Mail(kat) 1993 04 17.531 10.8 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 17.537 11.12 V HC Ohkura, N. and 35-cm SCT Mail(kat) 1993 04 17.537 &1 Ohshima, O. 1993 04 17.537 11.51 B HC Ohkura, N. and 35-cm SCT Mail(kat) 1993 04 17.537 &1 Ohshima, O. 1993 04 17.545 10.87 C TB Fujita, Y. 60cm CCD no filter Mail(kat) 1993 04 17.545 &1 Kuma Kogen Obs. 1993 04 17.55 11.34 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 17.55 11.37 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 17.55 10.88 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 17.55 10.36 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 17.55 10.17 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 17.565 11.0 mv TB Ohkura, N. 35.5-cm SCT Mail(kat) 1993 04 17.612 11.00 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 17.612 &1 Ishida, T. Nishi-Harima Obs. 1993 04 17.620 10.7 mv TB Takahashi, S. 60cm refl. Mail(kat) 1993 04 17.742 10.8 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 17.830 10.6 mv TA Tanti, T. Mail(gmh) 1993 04 17.847 10.5 mv TA Poyner, G. 40-cm refl. Mail(grl) 1993 04 17.86 10.81 V Hanzl, D. N. Copernicus Obs. IAUC 5767 1993 04 17.86 11.44 B Hanzl, D. N. Copernicus Obs. IAUC 5767 1993 04 17.861 10.6 mv TA Hurst, G. Mail(gmh) 1993 04 17.872 10.5 mv TA Day, J. Mail(gmh) 1993 04 17.875 10.2 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 17.875 10.5 mv A2 Carvajal, J. 31-cm f/4.5 refl. Mail(grl) 1993 04 17.882 10.2 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 04 17.882 10.5 mv A2 Garcia, D. 31-cm refl. Mail(grl) 1993 04 17.90 10.81 V Morrison et al. IAUC 5767 1993 04 17.90 10.46 R Mikuz, H. et al. Slovenia IAUC 5809 1993 04 17.90 10.37 I Mikuz, H. et al. Slovenia IAUC 5809 1993 04 17.901 10.6 mv TB Mizon, R. Mail(gmh) 1993 04 17.910 10.6 mv TA+ Midtskogen, O. 31.6-cm refl. 62x Mail(grl) 1993 04 17.917 10.3 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 04 17.917 10.2 mv A2 Rodriguez, D. 20-cm f/4 refl. Mail(grl) 1993 04 17.929 10.8 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 17.93 11.40 B *Goudfrooij LaPalma Mail(rw) 1993 04 17.93 10.90 V *Goudfrooij LaPalma Mail(rw) 1993 04 17.93 10.39 I J *Goudfrooij LaPalma Mail(rw) 1993 04 17.938 10.9 mv TA Girard, P. Mail(gmh) 1993 04 17.944 10.5 mv TA Jones, M. Mail(gmh) 1993 04 17.944 10.7 mv TA Lines, R. Mail(gmh) 1993 04 17.944 10.8 mv COAA Mail(gmh) 1993 04 17.947 11.0 mv TA Hewitt, N. Mail(gmh) 1993 04 17.97 11.37 B Mikuz, H. et al. Slovenia IAUC 5809 1993 04 17.97 10.80 V Mikuz, H. et al. Slovenia IAUC 5809 1993 04 17.97 10.44 R Mikuz, H. et al. Slovenia IAUC 5809 1993 04 17.97 10.41 I Mikuz, H. et al. Slovenia IAUC 5809 1993 04 17.999 11.0 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 18.00 11.53 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5769 1993 04 18.00 10.56 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5769 1993 04 18.031 10.6 mv TB Kratz, D. 20cm refl. 79x News 1993 04 18.07 10.84 V *Herbst Mail(gav) 1993 04 18.07 11.43 B *Herbst Mail(gav) 1993 04 18.07 10.51 R C *Herbst Mail(gav) 1993 04 18.07 10.41 I C *Herbst Mail(gav) 1993 04 18.12 10.82 V HC McDavid, D. 40-cm + CCD Mail 1993 04 18.12 11.40 B HC McDavid, D. 40-cm + CCD Mail 1993 04 18.125 10.7 mv AC Benge USA-TX Mail(rw) 1993 04 18.14 10.05 J Romanishin IAUC 5773 1993 04 18.14 10.05 H Romanishin IAUC 5773 1993 04 18.14 9.82 K Romanishin IAUC 5773 1993 04 18.16 11.0 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 18.2 11.33 U Richmond News 1993 04 18.2 11.42 B Richmond News 1993 04 18.2 10.85 V Richmond News 1993 04 18.2 10.51 R C Richmond News 1993 04 18.2 10.40 I C Richmond News 1993 04 18.2 10.86 V *CfA Mail(gav) 1993 04 18.2 11.44 B *CfA Mail(gav) 1993 04 18.2 10.49 R C *CfA Mail(gav) 1993 04 18.2 10.40 I C *CfA Mail(gav) 1993 04 18.3 11.58 B *Richmond C News 1993 04 18.3 10.84 V *Richmond C News 1993 04 18.3 10.53 R C *Richmond C News 1993 04 18.3 10.40 I C *Richmond C News 1993 04 18.465 10.7 mv TB Funada, M. 13cm refl. 88x Mail(kat) 1993 04 18.469 11.2 mv TB Makiguchi, N. 25-cm refl. Mail(kat) 1993 04 18.476 11.48 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 18.476 10.86 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 18.476 10.52 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 18.476 10.41 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 18.483 10.8 mv TB Sekino, Y. Mail(kat) 1993 04 18.494 10.9 mv TB Kushida, Y. 40cm CCD no filter Mail(kat) 1993 04 18.501 10.9 V TB Kushida, Y. 40cm CCD 550nm band- Mail(kat) 1993 04 18.501 &1 pass filter 1993 04 18.554 11.07 V HC Ohkura, N. and 35-cm SCT Mail(kat) 1993 04 18.554 &1 Ohshima, O. 1993 04 18.554 11.53 B HC Ohkura, N. and 35-cm SCT Mail(kat) 1993 04 18.554 &1 Ohshima, O. 1993 04 18.57 11.38 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 18.57 11.46 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 18.57 10.85 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 18.57 10.37 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 18.57 10.17 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 18.582 10.9 mv TB Ohkura, N. 35.5-cm SCT Mail(kat) 1993 04 18.609 10.85 C TB Fujita, Y. 60cm CCD no filter Mail(kat) 1993 04 18.609 &1 Kuma Kogen Obs. 1993 04 18.644 10.97 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 18.644 &1 Ishida, T. Nishi-Harima Obs. 1993 04 18.800 10.6 mv TA Tanti, T. Mail(gmh) 1993 04 18.851 10.7 mv AC Moeller, M. 15.0-cm refl. Mail(jah) 1993 04 18.854 10.2 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 04 18.865 10.2 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 18.865 11.0 mv TA Hewitt, N. Mail(gmh) 1993 04 18.872 10.6 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 18.882 10.5 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 04 18.882 10.5 mv A2 Carvajal, J. 31-cm f/4.5 refl. Mail(grl) 1993 04 18.915 10.5 mv TA+ Midtskogen, O. 31.6-cm refl. 62x Mail(grl) 1993 04 19.00 11.58 B C Prugniel, P. #1 Obs. Haute Provence IAUC 5769 1993 04 19.00 10.52 R C Prugniel, P. #1 Obs. Haute Provence IAUC 5769 1993 04 19.04 10.86 V *Herbst Mail(gav) 1993 04 19.04 11.48 B *Herbst Mail(gav) 1993 04 19.04 10.51 R C *Herbst Mail(gav) 1993 04 19.04 10.38 I C *Herbst Mail(gav) 1993 04 19.047 11.46 B Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 19.047 10.84 V Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 19.063 10.6 mv TB Kratz, D. 20cm refl. 79x News 1993 04 19.096 11.0 mv TB Bryan, J. 25-cm 80x Mail(bry) 1993 04 19.11 11.1 mv TB Wren, W. McDonald Obs. Mail(gav) 1993 04 19.14 10.04 J Romanishin IAUC 5773 1993 04 19.14 10.04 H Romanishin IAUC 5773 1993 04 19.14 9.82 K Romanishin IAUC 5773 1993 04 19.15 10.98 V Guinan, E. et al. Mt. Hopkins 0.8-m IAUC 5770 1993 04 19.15 11.4 mv MR Grosshans, K. 20-cm refl. News 1993 04 19.2 11.39 U Richmond News 1993 04 19.2 11.45 B Richmond News 1993 04 19.2 10.83 V Richmond News 1993 04 19.2 10.52 R C Richmond News 1993 04 19.2 10.42 I C Richmond News 1993 04 19.250 11.1 mv TA Hornby, P. Mail(gmh) 1993 04 19.450 10.9 mv TB Yamada, M. 16cm refl. Mail(kat) 1993 04 19.454 11.51 B HC van Driel, W. et al. Kiso 105-cm CCD IAUC 1993 04 19.454 10.87 V HC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 19.454 10.51 R CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 19.454 10.39 I CHC van Driel, W. et al. Kiso 105-cm+CCD IAUC 1993 04 19.472 10.9 mv TB Kushida, Y. 40cm CCD no filter Mail(kat) 1993 04 19.478 11.0 V TB Kushida, Y. 40cm CCD 550nm band- Mail(kat) 1993 04 19.478 &1 pass filter 1993 04 19.58 11.51 U HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 19.58 11.50 B HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 19.58 10.86 V HC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 19.58 10.34 R JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 19.58 10.16 I JHC Zheng, Z.-Y. et al. Xing-Long 60-cm #3 IAUC 5777 1993 04 19.634 10.85 V Okyudo, M and 60cm refl. + CCD IAUC 5770 1993 04 19.634 &1 Ishida, T. Nishi-Harima Obs. 1993 04 19.666 11.1 mv TB Ohkura, N. 35.5-cm SCT Mail(kat) 1993 04 19.780 10.6 mv TA Tanti, T. Mail(gmh) 1993 04 19.841 11.0 mv TA Hewitt, N. Mail(gmh) 1993 04 19.844 10.8 mv AC Moeller, M. 15.0-cm refl. Mail(jah) 1993 04 19.851 10.8 mv TB Bremseth, P.-J. 20.3-cm SCT 80x Mail(grl) 1993 04 19.854 10.2 mv A2 Pujol, F. 31-cm f/5 refl. 97x Mail(grl) 1993 04 19.854 10.1 mv A2 Carvajal, J 31-cm f/4.5 refl. Mail(grl) 1993 04 19.854 10.1 mv A2 Ripero, J. 33.5-cm f/4.5 refl. Mail(grl) 1993 04 19.858 10.8 mv TA+ Dahle, H. 20.3-cm SCT 133x Mail(grl) 1993 04 19.87 11.70 U Shakhovskoy et al. Crimea 1.25-m News 1993 04 19.87 11.69 B Shakhovskoy et al. Crimea 1.25-m News 1993 04 19.87 11.20 V Shakhovskoy et al. Crimea 1.25-m News 1993 04 19.87 10.38 R J Shakhovskoy et al. Crimea 1.25-m News 1993 04 19.87 10.27 I J Shakhovskoy et al. Crimea 1.25-m News 1993 04 19.88 10.87 V Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 19.88 11.55 B Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 19.88 11.53 U Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 19.88 10.30 R J Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 19.88 10.30 I J Mikolajewski et al. N. Copernicus Univ. IAUC 5769 1993 04 19.885 10.6 C A2 Rodriguez, D. 20-cm f/4 refl.+ CCD Mail(grl) 1993 04 19.885 10.8 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 19.885 &1 Delete obs. by Andersson, K. from 1993 04 19.927 1993 04 19.892 10.7 mv TA+ Midtskogen, O. 31.6-cm refl. 62x Mail(grl) 1993 04 19.892 10.9 mv TA+ Skjaeraasen, O. 20.3-cm SCT 117x Mail(grl) 1993 04 19.90 11.0 mv TA Bengtsson, H. 15-cm refl. Mail(grl) 1993 04 19.92 10.8 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 19.92 10.9 mv Pietz, J. Mail(jah) 1993 04 19.924 11.0 mv TA+ Granslo, B. H. 20.3-cm SCT 123x Mail(grl) 1993 04 19.924 10.8 mv TA Andersson, K.-G. 15.2-cm refl. Mail(grl) 1993 04 19.924 &1 Delete obs. by Andersson, K. from 1993 04 19.965 1993 04 19.927 11.6 mv Rowlands, J. Mail(gmh) 1993 04 19.938 10.6 mv A2 Garcia, F. 31-cm refl. Mail(grl) 1993 04 19.943 11.1 mv TA Westlund, M. 20.3-cm SCT Mail(grl) 1993 04 19.948 10.98 V Takalo Finland Mail(rw) 1993 04 19.98 11.0 mv TA Bengtsson, H. 15-cm refl. Mail(ben) 1993 04 19.986 11.46 B Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 1993 04 19.986 10.82 V Dumont, M. et al. Jungfraujoch Obs. IAUC 5774 (second half follows in next message)