as I said, gravity of other celestial bodies, sunlight and other radiation
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送交者: steven 于 2007-11-12, 15:20:00:
回答: LEO不是外太空 由 eddie 于 2007-11-12, 15:03:06:
etc all contributes to the trajectory of a spacecraft. It is extremely hard to predict orbits. Otherwise, we don't need to monitor asteroids (to see if they gonna hit earth.) Also, even in geosync. orbit, SVs still experience drag, let alone things like solar wind...
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