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    Re: March 22 Lunar Observations
    From: Bruce Stark
    Date: 2002 Mar 24, 00:55 EST

    Arthur-
    
    Worked your sun lunar and got 18:53:48.
    
    I don't graph, but averaging all the times and measurements, and allowing for
    the rate of change, suggested the time and distance you chose was about
    right. So I used your figures. But you wrote the moon's altitude down wrong
    in your e-mail. I got 30� 41.'7 for the moon's calculated altitude, and 29�
    53.'2 for her apparent central altitude.
    
    Other values I got that were different:
    
    Moon's refraction and parallax: 48.'43
    
    Sun's refraction and parallax: 1.'00
    
    Moon's augmented semidiameter: 15.'88
    
    Apparent distance: 99� 4.'2  (only 0.'1 different than what you got)
    
    Cleared distance: 98� 23.'7
    
    GMT: 18:53:48  (three minutes, 48 seconds more than your GPS)
    
    You measured it too long, and I'm not surprised, given the length of the
    distance.
    
    Bruce
    
    
    

       
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