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    Re: Lunar distance accuracy with StarPilot
    From: Antoine Couëtte
    Date: 2025 Dec 4, 07:07 -0800

    Hello to all,

    From only :

    2025 Nov 16 12:06 UTC(approx), TT-UT = +69.2 s, 0 height , 10 C 1013 mb
    Deleted reference to any approximate position
    9° 56.0' Spica distance from near limb
    21° 53.0' Moon LL altitude
    14° 02.0' Spica altitude
    

    There seems to be 2 sensible existing solutions actually:

    (1) UT1=12h12m13s, N46°01'/W093°05' Cleared dist. 10°52.49' (+/- 0.05') & Sun at 11° below Horizon. And:

    (2) UT1=12h12m05s, S15°33'/W115°40' Cleared dist. 10°52.57' (+/- 0.05') & Sun at 12° below Horizon.

    Obviously in both cases the Position Error Ellipses are important, but - at least - we are not that far off.

    Thanks to you, Paul :-)

    Kermit

       
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