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Order Aste- Name Year of Mean Mean Orbital Eccen-
No. roid Discov- Diameter Radius tricity
No. ery (km) (AU)
1 1 Ceres 1801 946 2.766 0.075823
2 4 Vesta 1807 525.4 2.362 0.08874
3 2 Pallas 1802 512 2.773 0.23127363
4 10 Hygiea 1849 431 3.139 0.1146
5 704 Interamnia 1910 326 3.062 0.15431
6 52 Europa 1858 315 3.095 0.102
7 511 Davida 1903 289 3.168 0.18690453
8 87 Sylvia 1866 286 3.485 0.080
9 15 Eunomia 1851 268 2.643 0.187
10 3 Juno 1804 258 2.672 0.25545
Notes:
- Reference:
Wikipedia:
List of notable asteroids: Largest asteroids by diameter.
- Ceres
is actually oblate
because of the centrifugal force
caused by its relatively fast rotation
with rotation period 9.074170(2) hours.
From accurate/precise measurements,
Ceres
has mean equatorial
diameter
963.2 km and polar diameter 891.2 km.
- Vesta
is approximately triaxial
with dimensions: 572.6 x 557.2 x 446.4 km.
Thus, even bodies larger than 300 km in size scale do NOT have to be
exactly spherical or oblate spherical.
The centrifugal force
and rigid body forces can partially withstand
gravity for
Vesta-size
astronomical objects.
- (52) Europa
is NOT to be confused with Jupiter's
Galilean moon
Europa
which is a much bigger body.
- Largest asteroids:
Ceres ⚳,
Davida,
Eumonia,
(52) Europa
(see asteroid
Europa symbol ̆ε),
Hygiea ⚕
,