Properties of typical G-type main-sequence stars
    Spectral
    type
    Mass Surface
    gravity
    (log g)
    Effective
    temperature
    (K)
    Color
    index
    (B - V)
    G0V 1.15 4.32 5,980 0.583
    G1V 1.10 4.34 5,900 0.608
    G2V 1.07 4.35 5,800 0.625
    G3V 1.04 4.37 5,710 0.642
    G4V 1.00 4.38 5,690 0.657
    G5V 0.98 4.40 5,620 0.672
    G6V 0.93 4.42 5,570 0.690
    G7V 0.90 4.44 5,500 0.713
    G8V 0.87 4.46 5,450 0.740
    G9V 0.84 4.48 5,370 0.776

    Properties of typical M-type main-sequence stars
    Stellar
    class
    Mass
    (M)
    Radius
    (R)
    Luminosity
    (L)
    Teff
    (K)
    M0V 60% 62% 7.2% 3,800
    M1V 49% 49% 3.5% 3,600
    M2V 44% 44% 2.3% 3,400
    M3V 36% 39% 1.5% 3,250
    M4V 20% 26% 0.55% 3,100
    M5V 14% 20% 0.22% 2,800
    M6V 10% 15% 0.09% 2,600
    M7V 9% 12% 0.05% 2,500
    M8V 8% 11% 0.03% 2,400
    M9V 7.5% 8% 0.015% 2,300