Table of Approximate Main Sequence Lifetimes

 
 Spectral Type   Photosphere   Luminosity    Mass     Lifetime on Main Sequence
                 Temperature    (L_Sun)     (M_Sun)           (Gyr) 
                  (1000 K)

     O               35         80,000        25              0.003
     B               30         10,000        15              0.015
     A               11             60         3              0.5
     F                7              5         1.5            3
     G                6              1         1             10
     K                5              0.5       0.75          15
     M                4              0.03      0.5          200  

---

Notes:
1. The data was taken from CK-311 But comparable data can be found in FK-470.

---