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    Re: Moon, Venus and Jupiter today
    From: Ed Popko
    Date: 2019 Feb 2, 14:01 -0800

    Ron,

    Thanks for looking at it.

    I made a huge cut/paste error in the Cleared LD column.  The original post was hugely wrong, not even remotely close. Surprising I did not see this huge error jump out before posting. The values in the LUNARS SUMMARY are correct.  The interpolations still stand, the Cleared LDs listed there were correct.

    BTW, if you need lunars test cases, I have several text files I can send you which offers a mix of personal cases and ones taken from classic 19th century text book examples. I use them to check my calculator programs as I have programed four different lunars algorithms.

    LUNARS SUMMARY
    -----------------------------------------------------------------
                         Near Limb    Cleared
    Sight  GMT      LD [1]         LD [2]    Error [2]  Comment
    -----------------------------------------------------------------
     1.  11:06:55   24° 50.1'   25° 36.3'  -1.1' <-- rejected
     2.  11:09:27   24° 51.1'   25° 36.8'   0.6'
     3.  11.11:23   24° 49.6'   25° 34.9'  -0.4'
     4.  11:13:43   24° 48.7'   25° 33.6'  -0.6'
     5.  11:14:31   24° 48.9'   25° 33.6'  -0.2'
     6.  11:16:35   24° 48.4'   25° 32.7'  -0.1' LD same as 7
     7.  11:17:13   24° 48.4'   25° 32.6'   0.1' LD same as 6
     8.  11:18:15   24° 47.8'   25° 31.8'  -0.2' LD same as 9
     9.  11:19:16   24° 47.8'   25° 31.6'   0.1' LD same as 8
    10.  11:20:09   24° 47.5'   25° 31.1'   0.0' <-- fluke
    -----------------------------------------------------------------
    [1] observed

    [2] reduced using Reed's Lunars Calclator



    --------------------------------------------------------------------------------------------------------
    LUNARS TIME BRACKET
    --------------------------------------------------------------------------------------------------------
                               Predicted         Cleared     Lunars              
               GMT       Geocentric         Lunar       Computed   Computed vs
    Sight   Time      Lunar Distance  Distance   Time            Actual GMT      Comment
    --------------------------------------------------------------------------------------------------------
    Almanac 11:00:00    25° 40.8'                                       
     1.     11:06:55                             25° 36.3'       11:09:21    2Min 26sec fast   worst case
     6.     11:16:35                             25° 32.7'       11:16:49         14sec fast
     8.     11:18:15                             25° 31.8'       11:18:41          2sec fast   a good one
    10.     11:20:09                             25° 31.1'       11:20:08          1sec slow   a fluke
    Almanac 12:00:00    25° 11.9'                                       
    --------------------------------------------------------------------------------------------------------
    * from web Predicted Geocentric Lunar Distances app

       
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