Earth: Orbit


V = sqrtt[ (G · Msmearth)/r ] cm/sec
where,
G = 6.67 · 10-8 dyne cm2/gm2
Msmearth = 5.975 · 1027 grams
r = 105 · (<Rsmearth> + z)
Rsmearth = 6374.87 Km
P = (2 · pi · r)/(V · 3600) hours
Vg = (2 · pi · 105 · Rsmearth)/(P · 3600) cm/sec

r(Km)P(hr)V(Km/s)Vg(Km/s)
200.01.4747.7867.549
400.01.5427.6707.217
700.01.6457.5056.763
900.01.7157.4016.486
35863.924.0003.0720.464