Re: OT: Was this the Project Kevin Fetter Referred to?

From: Björn Gimle (
Date: Fri Dec 07 2012 - 15:20:51 UTC

  • Next message: Brian Weeden: "Re: OT: Was this the Project Kevin Fetter Referred to?"

    And what about the much larger gravitational perturbations from Moon,Sun,
    planets - and asteroids passing by/lingering ?
    Most of them are long-periodic, but for the Molniya-type orbits they often
    force the perigee down so the drag increases (too much).
    2012/12/7 Jonathan W <>
    > The author of the article below posits that geostationary satellites will
    > remain in their orbits indefinitely - until they are removed, or the Sun
    > becomes a red giant some 5 billion years from now, since there is
    > absolutely no atmospheric drag at the altitude of 22,300 miles.  But is
    > that really true?  Is there ABSOLUTELY *NO* atmospheric drag at that
    > altitude?  Even if there is barely measurable drag when measured over a
    > period of a few decades, the orbits wouldn't actually be permanent, when
    > considering timescales in the billions of years.
    > Jonathan
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