Re: graveyard orbits

From: Brian Weeden (brian.weeden@gmail.com)
Date: Sat Jan 24 2009 - 05:30:58 UTC

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    For a good reference on this, see the supporting document to the
    Interagency Debris Mitigation Coordination (IADC) debris mitigation
    measures:
    
    http://www.iadc-online.org/docs_pub/IADC.SD.AI20.3.10.2004.pdf
    
    Page 18 is where it starts to get into details about super-sync.
    
    ----
    Brian
    
    On Fri, Jan 23, 2009 at 10:23 PM, George Roberts <gr@gr5.org> wrote:
    >
    > Satellites (including our moon) positioned inside the geo belt are expected to slowly decay into lower orbits due to tidal forces and also some friction.
    >
    > Satellites positioned outside the geo belt should have a tendency to be pushed into further higher orbits due to tidal forces.  This is especially true with the moon (a large satellite) which is getting farther from the earth due to tidal forces.  I'm not an expert on this and it might be that the affect on small satellites is too small to overcome friction but the decay rate from 'friction' at those altitudes is crazy small.  Of course friction is probably the wrong word here but basically banging into those molecules hanging around out there.
    >
    >> If the graveyard were BELOW geo synch then new satellites would have to fly
    >> through that area to get to GEO.
    >
    > And if two of the dead satellites collided and made thousands of smaller pieces it would be nice if most of those pieces were beyond geosynch.
    >
    > - George Roberts
    > http://gr5.org
    >
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