Found Moon maximum declination error difference when compared with NASA JPL data, for a close date.

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Anonymous
2013-12-27
2013-12-28

  • Anonymous
    2013-12-27

    Hi everyone, I have found the error goes bigger in a southern latitude. (35ºSouth), please correct me if i am wrong.

    i did several tests:

    At 0º 0m 0s North
    at 0º 0m 0s East.
    From NASA JPL we have maximum moon dec at:
    2013-Nov-19 02:07 m 04 47 01.04 +19 37 23.5 NASA JPL
    From Stellarium we have maximum dec at:
    2013 Nov 19 at 02:08 aprox. +19 37 26.6
    1 minute and 3 seconds different its no bad.

    when i change from location:
    90ºW and 20º15m N i got:
    2013-Nov-19 07:55 m 04 59 54.67 +19 25 50.4 NASA JPL
    and from stellarium:
    07:55 +19 25 45.8
    0 minute time and 5 secs arc difference

    the same but with southern latitud.
    90ºW and 20º15m South
    2013-Nov-19 07:53 m 04 59 51.98 +20 01 43.5 NASA JPL
    and from stellarium:
    07:54:18 +20 01 52.4
    1 minute time and 9 second arc difference

    but with 90W and 35º 15m South
    2013-Nov-19 06:51 m 04 57 34.79 +20 10 12.3 NASA JPL
    and with stellarium:
    06:59 +20 12 08.8
    over 8 minutes time and almost 2 minutes arc in dec. Too Much for a close date!.

    I found all max declinations by steping by hand at 1 second rate.

    The error value for 35º15m is too much and its not a very southern latitude, its normal???

    Thanks for your help.
    Igor.

     


Anonymous


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