Re: Seesat-l Digest, Vol 28, Issue 17

From: Cristian Arezzini (
Date: Thu May 17 2012 - 13:22:30 UTC

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    > Perigee altitude of satellites decayed between 2007 and 2011
    > Makoto Kamada
    That's a really nice graph. But I have a question. I see that some
    satellites were still at a 400Km perigee one day or two before decay. This
    means that the apogee was also 400Km or greater. How can it be that a
    satellite orbiting at at least 400Km decays after one or two days? There
    shouldn't be enough drag up there to bring it down, or am I getting it
    totally wrong?
    Thank you
    Cristian Arezzini
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