Re: Sat.program predictions

Date: Tue Oct 31 2006 - 23:39:52 EST

  • Next message: Kevin Fetter: "possible unid sat, please confirm someone no object pass by this certain star"

    "I look forward to the first program that comes  out that
    uses the latest SGP4/SDP4 code that was put on the
    Internet in  August 2006."
    Where is that code, if I may ask?
    Incidentally, can  anyone point me to comparisons of the full models versus 
    simple precessing  ellipses? I understand I can expect ground track errors of a 
    couple of tenths of  a degree in simple cases, but is it ever worse? Isn't 
    element age a bigger issue  than all these subtleties of models?
    42.0N 87.7W, or 41.4N  72.1W.  
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