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    Re: Paul Jackson's Luna data
    From: Andrés Ruiz
    Date: 2010 May 12, 15:02 +0200

    Paul, indeed your  calculated altitudes, (Alt moon 20º 33.9 Alt Jupiter 22º 02.6), are wrong.

    The time 18:15:52 is ZT or GMT????. Change of date???

    Here are my calculations:

     

     

    09/05/2010

    18:15:52 UT1

    Geocentric equatorial coordinates

    Moon:

    GHA = 144.886638 º = 144º 53.2'

    Dec = 3.864253 º =   3º 51.9'

    Phase: 18% (-)

    Jupiter

    GHA = 145.132960 º = 145º  8.0'

    Dec = -2.774861 º =  -2º 46.5'

    Geocentric lunar distance

    LD = 6.643676 º = +06º 38' 37.2"

     

    DR:

    B = -36.800000 = -36º 48.0'

    L = 174.766667 = 174º 46.0'

     

    IE = 1.000000 '

    air T = 10.0 ºC

    air P = 1010.0 hPa

    h Eye = 1.83 m

    Dip = 0.039681

     

    Time by lunar distances

    Moon:

    Hs = 33.935266 =  33º 56.1'

    Limb = 0

    SD = 14.959059 '

    HP = 54.899153 '

    R  = 0.024097 º

    OB = -0.001906 º

    PA = 0.757424 º

    AG = 0.002241 º

    SDag = 15.093533 '

    Body: Jupiter

    Hs = 39.891681 =  39º 53.5'

    Limb = 0

    SD = 0.298164 '

    HP = 0.026601 '

    R  = 0.019397 º

    OB = -0.000001 º

    PA = 0.000339 º

    AG = 0.000000 º

    SDag = 0.298166 '

    Lunar observation:

    LDs = 7.346667 =   7º 20.8'

    Moon Limb = 1

    body Limb = 0

    Clearing Lunar Distance:

    m = 33.912252  =  33º 54.7'

    M = 34.645579011668701  =  34º 38.7'

    s = 39.868666  =  39º 52.1'

    S = 39.849609076213149  =  39º 51.0'

    d = 7.614893  =   7º 36.9'

     

    T1 = 17.000000      LD1 = 6.381948

    Tc = 19.960706      LDo = 7.027852

    T2 = 19.000000      LD2 = 6.818265

     

    Error:

    Ta = 18:15:52 LDc =   6º 38.6'

    Tc = 19:57:39 LDo =   7º  1.7'

    Tc = 19:57:39 LDc =   7º  4.1'

    |LDo-LDc(Ta)| = 0.384176º = 23.050534'

    |LDo-LDc(Tc)| = 0.040818º = 2.449057'

    |Ta-Tc| = 101.775718 min = 6106.543084 s

     

    Time by lunar distances - Calculated altitudes

    Hc1 = 39.849610 =  39º 51.0'

    Hs1 = 39.891681 =  39º 53.5'

    Ha1 = 39.868666 =  39º 52.1'

    Hc2 = 34.646587 =  34º 38.8'

    Hs2 = 33.935266 =  33º 56.1'

    Ha2 = 33.912252 =  33º 54.7'

    Calculated altitudes

    Latitude by simultaneous double altitudes

    Bv = -36.809325 = -36º 48.6'

     

    Longitude by time sight

    Lv = 174.774251 = 174º 46.5'

     

    Error in position:

    |Be-B| = 0.009325º = 0.559519'

    |Le-L| = 0.007584º = 0.455030'

    Calculated altitudes

    Bv = -36.800000 = -36º 48.0'

    Lv = 174.766667 = 174º 46.0'

    Error in position:

    |Be-B| = 0.000000º = 0.000000'

    |Le-L| = 0.000000º = 0.000000'

     

     

     

    Regards,

     

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

     

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