07-04-12, 10:17 AM
(07-04-12, 09:58 AM)DryRob link Wrote: Due to the earth not being perfectly spherical, variations in the height of orbit and errors in the measured quantities this value can only be considered an approximation.
Also, at that speed, the time taken for an astronaut on the SS to do one orbit will take slightly less time than an observer watching the same orbit on the ground.