Re: Mars Express TLE?

From: Tony Beresford (
Date: Thu Jun 05 2003 - 07:11:33 EDT

  • Next message: Peter Wakelin: "SATOBS 2003 June 05"

    At 20:22 5/06/03, Björn Gimle wrote in part:
    >For using the WWW interface there ought
    >to be an observatory location = Earth's Centre, but I haven't found one,
    >and site elevation must be > -20 km.
    Bjorn and others.
    The Horizon system uses the Minor Planet Centre observatory codes.
    In this system observatory code 500 is geocenter.
    You can of course enter your own lat/long, choose an observatory or a
    major city close to you. After all this system wasnt originally meant
    to handle objects close to Earth.
    If you use the WWW interface you have to put up with distances in AU,
    but the number of significant figures is enough to get meaningful
    values in Km.
    Tony Beresford
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