- #71
Jim60
- 39
- 3
Think I’ve figured out how Wikipedia got 365.256363004 SI days for the Sidereal year?
Earths semi-major axis a = 1.4959974465490E+11 Metres.
Gravitational constant G = 6.67408E-11 Newton Metres squared / kilogram square
Suns mass M1 = 1.98855E+30kg
Earths mass M2 = 5.97237E+24kg
T = 2*PI()*SQRT(a^3/G*(M1+M2))
Orbital period T = 31558149.76354540 SI seconds
Earths semi-major axis a = 1.4959974465490E+11 Metres.
Gravitational constant G = 6.67408E-11 Newton Metres squared / kilogram square
Suns mass M1 = 1.98855E+30kg
Earths mass M2 = 5.97237E+24kg
T = 2*PI()*SQRT(a^3/G*(M1+M2))
Orbital period T = 31558149.76354540 SI seconds