Class number G average lifespan 8 billion - 13 billion yrs Type Class of medium main sequence star. Mass range 0.89–1.07 M☉ Temperature 5,380–5,930 K Average luminosity 0.55–1.35 L☉ Average radius 0.96 - 1.15 'examples the sun (that one bright star in the sky that blinds you everytime you look at it and makes it feel like 125 F in Las Vegas during the summer) Alpha Centauri A Tau Ceti Sigma Draconis
