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    Re: Lewis and Clark lunars: more 1803 Almanac data
    From: Ken Muldrew
    Date: 2004 Apr 19, 17:10 -0600

    On 19 Apr 2004 at 16:10, Ken Muldrew wrote:
    > I had another look at a star chart over lunch and found a small, dim,
    > red star at the bottom of Orion's bow (PI 6 Orion) with an 1803 right
    > ascension of 4h 48m 23.5s, dec 1? 24' 5.7". I stuck that into my
    > spreadsheet where I was comparing the cleared distance with the true
    > distance for various stars (in my post of this morning) and it appears
    > to be our mystery star.
    AAAUUUGGGHH! I seem to be flooding the list with my mistakes. I found
    an error in my altitude calculation that changes the results a bit
    (although it still appears that this is the mystery star). The
    following table should replace the previous one:
            clr'd d true d
    GMT     PI 6 Orion
    5.094   59.768  59.605
    5.323   59.829  59.705
    5.493   59.902  59.795
    5.589   59.911  59.831
    5.643   59.995  59.865
    5.694   60.010  59.888
    7.267   60.622  60.625
    7.362   60.698  60.680
    7.419   60.679  60.698
    7.490   60.687  60.732
    7.525   60.716  60.757
    7.571   60.718  60.770
    Here the error in the first series is about 4' and the error in the
    second series is about 1.4'. Sorry to all for my lack of diligence.
    Ken Muldrew.

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