Introduction to Astrophysics/Astronomical Constants

Speed of light: c = 2.99792458 &times; 108 m s-1 Gravitation Constant: G = 6.6742(10) &times; 10-11 m3 kg-1s-2 Mass of Sun: Msun = 1.99 &times; 1030 kg Luminosity of Sun: Lsun = 3.83 &times; 1026 J s-1 Radius of Sun: Rsun = 6.96 &times; 108 m 1 astronomical unit (AU): 1.496 &times; 1011 m 1 light year (ly): 9.461 &times; 1015 m = 0.307 pc 1 parsec (pc): 3.086 &times; 1016 m = 3.26 ly Solar effective temperature: Teff = 5777 K Hubble Constant: H0 = 70.1&plusmn;1.3 kms-1 Mpc-1 Cosmological Constant: |&Lambda;|&le;10-51 m-2 Cosmic background radiation = 2.725(1) K Mass of Earth: Me = 5.97370(76) &times; 1024 kg Radius of Earth: Re = 6.378136 &times; 106 m