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    Re: Alhena Lunar exercise
    From: Antoine Cou�tte
    Date: 2009 Sep 20, 13:50 -0700

    Sep, 20 2009
    
    
    For a better understanding of the lines hereunder, refer to NAVLIST 9816
    
    
    Dear Jeremy,
    
    
    This one will the very last one for to-day.
    
    I have used your average values both for UT = 07h43m27.8s and for Sextant 
    Height corrected for Index error = 45�13'4
    
    Assuming that the listed position N1535.5W04914.6 is valid for 07h43m27.8s, 
    then observed sextant altitudes (corrected for sextant error) at this same 
    time are 48�28'019 for Alhena and 80�45'412 for Moon Lower Limb.
    
    (1) Computing the Lunar with the forced following values : 07h43m27.8s/45�13'4 
    gives us a sextant distance corrected for ALL effects equal to 45�13'219. 
    Compared to your mean value of 45�13'3, your observation error is 0'18  : 
    EXCELLENT !!!!
    
    (2) On the other hand, if we assume that both Position and Distance have no 
    error, then UT error would be 00m35.2s with a UT of Sextant Distance equal to 
    7h42m52s6, at which time the geocentric Centers distance would be 45�26'097.
    
    (3a) If we assume that both Distances and Heights are correct, then UT error 
    is 00m19.4s . Then in such case, UT of Sextant Distance is 07h43m08.4s, 
    Geocentric Centers distance is 45�25'953, and observed position would be 
    N15035.6W04909.7
    
    
    Good Night !!!
    
    Antoine
    
    
    Antoine M. "Kermit" Couette
    
    PS : Hopefully no typos ... I am starting to get tired !
    
    
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