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    Re: Zenith Fixes
    From: Andrés Ruiz
    Date: 2019 Mar 25, 15:04 +0100
    Yes Tony that is the problem.
    Attached:
    19811013 112100 Fix
    19811013 120000 Fix
    19811013 112100 Fix.png
    19811013 120000 Fix.png


    El sáb., 23 mar. 2019 a las 2:47, Tony Oz (<NoReply_TonyOz@fer3.com>) escribió:

    Hello!

    Please correct me if I'm wrong. I understood this problem as:

    • 1981-11-13T11:12:00; GHASun=351°55.4', DecSun=-18°0.3'; Zenith Distance observed = 1°52'
    • 1981-11-13T11:21:00; GHASun=354°10.4', DecSun=-18°0.4'; Zenith Distance observed = 1°26.1'
    • Course 164°; speed 12kn

    From these observations I got a fix: 19°14.8'S, 6°37.4'E on 1981-11-13T11:21:00. Or, if the speed and course remain the same, on 1981-11-13T12:00:00 the position would be 19°22.1'S, 6°39.6'E.

    How far is it from truth?

    Regards,
    Tony

    60°N 30°E

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    --
    Andrés Ruiz
    Navigational Algorithms
    http://sites.google.com/site/navigationalalgorithms/

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