Re: Maximum distance to launch ground tracks

From: Jonathan T Wojack (
Date: Sun Apr 29 2001 - 14:00:24 PDT

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    > The formula for maximum surface distance on the Earth (in 
    > kilometers) an
    > object at HEIGHT (also in kilometers) can be seen is given by:
    At the calculated distance - at what altitude is the object above the
    observer's horizon?
    > DIST = 6371 * {arccos[6371/(6371 + HEIGHT)]  /  57.29577}
    I'm not familiar with the term "arccos".  How does it differ from the
    mathematical function cosine?
    Jonathan T. Wojack       
    39.706d N   75.683d W            
    4 hours behind UT (-4)
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    This archive was generated by hypermail 2b29 : Sun Apr 29 2001 - 17:32:59 PDT