Re: geostationary movers.

From: gr@pobox.com
Date: Thu Oct 21 2004 - 14:10:35 EDT

  • Next message: Peter Wakelin: "SATOBS 2004 October 21"

    >If my relative velocity of 450 km / hour is right , does this compute 
    to an
    >approximate orbit of 50 km or so below the geo belt?
    
    I get 3211km lower orbit.  Seems extreme.  I used the formula:
    velocity (m/s) = sqrt(3.986e14/radius(m))
    Make sure you convert everything to meters and seconds
    If geo orbit is 42,000,000m then v=3080m/s
    if we change v by 125m/s (450km/h) then orbit is 3211km lower.
    
    >(I'm assuming that different topgraphy below their lots will have a 
    marginal
    >affect on orbital height )
    
    The moon has a much bigger influence than mountains of course and 
    messes up
    these orbits all the time (makes them incline so they aren't over the 
    equator
    anymore - they oscillate above and below).  The sun too.
    
    - George Roberts
    
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