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    Re: In Honor Of Jeremy Two Stars Full Lan's : One Upper And One Lower Culmination
    From: Peter Hakel
    Date: 2009 Sep 21, 17:46 -0700
    My version of the "rapid-fire fix" method applied to your Deneb example gives me:

    N  42 deg 08.0'  +/- 1.7'
    E    6 deg 58.3'  +/- 9.2'

    This is not as good as the transit algorithm.  My intermediate results (input file for the rapid-fire fix program) are:


    Time of fix (UT hours, minutes, seconds):
    16 30 0

    Assumed position:
    Latitude (degrees, minutes)
      42  8.4
    Longitude (degrees, minutes)
       6 53.7

    Course (degrees, true)
    40.2

    Speed (knots):
    22.5

    Number of observations:
    6

    UT           Ho         Intercept Azimuth
     h m  s      d  m       nm (T=+)  d (true)
    16 26 06     86 41.1    +1.3       20.3
    16 28 02     86 58.0    -0.6       14.5
    16 30 12     87 03.3    +0.1        7.7
    16 32 31     87 05.7    +0.7        0.1
    16 35 18     87 04.0    +1.4      351.0
    16 38 43     86 55.1    +1.9      340.5


    Peter Hakel



    From: "antoine.m.couette@club-internet.fr" <antoine.m.couette@club-internet.fr>
    To: NavList@fer3.com
    Sent: Sunday, September 20, 2009 11:27:20 PM
    Subject: [NavList 9833] Re: IN HONOR OF JEREMY TWO STARS FULL LAN's : ONE UPPER and ONE LOWER CULMINATION


    And by the way, what method did you use to work both LAN's ? If you rework both examples from your published results as DR positions and go with the Azimut/Intercept method (i.e. the so-called Marc Saint Hilaire), do you still get the very same final fixes ?



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