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    Re: Compare Methods: Lat/Lon Near Noon
    From: Peter Hakel
    Date: 2021 Aug 28, 11:15 -0700

    Speed over ground ("set_and_drift"): 4.3 kts at 157°

    UT of LAN (from both “noon_motion” and “transit”): 16:37:29
    Lat: N 37° 10’
    Lon: W 70° 11’

    From the least-squares-based NA method ("many-body fix"):
    at 16:37:29 (LAN)
    Lat: N 37° 11’
    Lon: W 70° 12’

    at 17:00:00 ("fix17h")
    Lat: N 37° 10’
    Lon: W 70° 12’

    The sun.xls spreadsheet was used for the ephemerides; all Ho = Hs + 13' per Frank's original message.



    Peter Hakel
    navigation-spreadsheets.com

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