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    Re: Error in Nautical Almanac Polaris SHA Feb-June?
    From: Bill Noyce
    Date: 2004 Apr 19, 08:57 -0400

    The biggest effect in changing the SHA for a star is annual aberration,
    which moves the star's apparent position in an ellipse about 0.6' long.
    For most stars, that translates to a change in SHA of about 0.6' from
    one extreme to the other.  Polaris is special because a small "distance"
    displacement, divided by cos(declination), becomes a large displacement
    in SHA.  No other navigational star has nearly as small a cos(d).
            -- Bill
    
    
    

       
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