Stability Orbital spaceflight

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the international space station during construction in earth orbit in 2001. must periodically re-boosted maintain orbit



an object in orbit @ altitude of less 200 km considered unstable due atmospheric drag. satellite in stable orbit (i.e. sustainable more few months), 350 km more standard altitude low earth orbit. example, on 1958-02-01 explorer 1 satellite launched orbit perigee of 358 kilometers (222 mi). remained in orbit more 12 years before atmospheric reentry on pacific ocean on 1970-03-31.


however, exact behaviour of objects in orbit depends on altitude, ballistic coefficient, , details of space weather can affect height of upper atmosphere.








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