The International Space Station in Daylight

From: tlj18@juno.com
Date: Thu May 18 2000 - 11:06:29 PDT

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    >How did you find ISS in daylight? What was the Sun's az/el and ISS'? 
    >(Or
    >your coordinates)
    
    My geographical coordinates are:
    
    39.706 N; 75.683 W.
    
    The sun's altitude was -6.3 degrees.  The sky was still very much blue. 
    The limiting magnitude was around 0, and ISS was predicted for -1.1.  ISS
    was about 45 degrees high in the western sky.  Only one other star was
    visible.
    
    It didn't matter that there wasn't any other stars in the sky, because
    the International Space Station was bright enough to break through the
    twilight.  It's kind of like the sun (well, sort of): you don't need
    guide stars to find it, because it's bright enough to be located by
    itself.
    
    ================================================================
    Jonathan T. Wojack                                                
    tlj18@juno.com
    
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