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    Re: USCG Sample Problem #2 for Southern Hemisphere
    From: Peter Hakel
    Date: 2013 Apr 19, 17:24 -0700
    Greg, Kermit,

    I am getting 0.2' - 0.3' differences for Moon:
    SD: 14.8'
    Ho: 62d 26.3'

    but agree with all the rest.  My computed fix at UT = 20:00:00 (I used your numbers for input there, see attached PNG) is:

    Lat: S 9d 41.1'
    Lon: W 152d 43.9'

    Good agreement overall, I think! :-)


    Peter Hakel



    From: Antoine Couëtte <antoine.m.couette{at}club-internet.fr>
    To: pmh099---.com
    Sent: Friday, April 19, 2013 7:03 AM
    Subject: [NavList] Re: USCG Sample Problem #2 for Southern Hemisphere


    RE : http://fer3.com/arc/m2.aspx/USCG-Sample-Problem-2-for-Southern-Hemisphere-Rudzinski-apr-2013-g23605
    Good Day Greg,

    You should be soon waking up ... therefore you need some reading ! :-)
    At 10:00 LT, i.e. 20:00 UT, I find the following position :
    S 09°41'8 W 152°43'7 with a LOP's dispersion of 0.1 NM (Excellent !)
    This result - subject to crosscheck with Peter Hakel (see " http://fer3.com/arc/m2.aspx/Group-Project-USCG-student-sample-problems-Couëtte-apr-2013-g23607 " ) - seems within 1 NM from your result.
    Best Regards
    Kermit
    PS : May I suggest that there should be one example with a Southern Declination CIRCUMPOLAR Star with a Local Time somewhere between 180° and 270° ? As I can recall from previous practice (many many moons ago) the heights interpolations from the HO tables require extra care under such situations. This would involve building up one other example ... if you think this idea is OK, I can build it up.
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