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    Example from About Lunars, Part 2
    From: Chuck Griffiths
    Date: 2002 Mar 4, 17:54 -0500

    I'm working my way through the Moon-Mars example now from Part 2 and I'm not
    feeling too sure of myself. I feel pretty good about my calculated D1 and D2,
    65.459 and 65.920 respectively. But, I'm wrestling with using Letcher's method
    to find D and I'm outside of that range. I'm subtracting semidiameter  and Mars'
    paralax from the lunar distance and I end up with a D of 65.406. Can anyone give
    me some hints?
    
    Chuck Griffiths
    
    
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