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    Re: Beginner Meridian Passage Question
    From: Andr?s Ruiz
    Date: 2004 Sep 9, 12:09 +0200

    You can see at
    http://www.geocities.com/andresruizgonzalez/celestial/polaris_eng.html
    A graphic of Polaris SHA and Declination during this year and 2005
    
    
    -----Mensaje original-----
    De: Navigation Mailing List [mailto:NAVIGATION-L{at}LISTSERV.WEBKAHUNA.COM]
    En nombre de Noyce, Bill
    Enviado el: viernes, 03 de septiembre de 2004 15:13
    Para: NAVIGATION-L{at}LISTSERV.WEBKAHUNA.COM
    Asunto: Re: [NAV-L] Beginner Meridian Passage Question
    
    
    > > b) when you think Polaris is directly below or above the pole, add
    or
    > > subtract its difference (which you have memorized as about 45');
    >
    > It looks to me that the average declination for Polaris in 2004 was
    close to 89 d 17'.  90 - > 89 d 17' = 43'.  Am I missing some 2nd and
    3rd order variables when calculating the distance > of Polaris from PN?
    Id so, what?
    
    For lifeboat navigation, I was assuming (1) a couple of minutes / miles
    doesn't matter;
    (2) a round number was easier to remember; and (3) I had the impression
    Polaris had already passed as close to the pole as it was going to, and
    was now slowly moving away. I now believe #3 is wrong -- it looks to me
    as if that happens around 2008, though the motion is less than 0.1'
    every few years.
    
    So if you can remember 44' or 43', use that.
            -- Bill
    
    
    

       
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