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    Re: Sumner Line of position
    From: Dave Walden
    Date: 2009 Nov 18, 17:17 -0800

    Log Sumner
    
    Here's two Sumner lines using logs.  (Those given by Andres Ruiz.)  A few 
    minutes with the Noire tables was all that was needed.  Each line takes two 
    calcs, about the same as an altitude and an azimuth.  This case was for the 
    body E-W, so a Latitude was assumed, and a Longitude calculated.  For bodies 
    N-S, a Longitude should be assumed, and a Latitude calculated.  (Calculate 
    using logs.  Left as an exercise for the reader.)
    
    **************************
    
     TWO Circles of Position
    19/02/2004   20:00:00 Fix
    UT1 date body GHA Dec Ho
    19/02/2004 20:00:00 Procyon 334.23   5.22 28.5
    19/02/2004 20:00:00 Sirius  347.78 -16.72 19.55
    DR at tFix: 42N 30.5W
    
    
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