NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: 3 sights SR example
From: Stan K
Date: 2017 Jun 23, 14:13 -0400
From: Stan K
Date: 2017 Jun 23, 14:13 -0400
Andrés,
Maybe I'm missing something, but I do not see why you provided the date, bodies, and even the exact times, for this question.
Anyway, I converted the decimal degrees to minutes and rounded the minutes to tenths. Then I plugged the values into Celestial Tools, using the Law of Cosines. The result was (assuming I entered everything correctly):
Fix L = 10º53.7'S
Fix Lo = 178º54.4'E
Fix is 35.5 nautical miles fro DR, at a bearing of 042º true.
Celestial Tools uses the method on page 282 of the Nautical Almanac to determine the fix.
If this is significantly wrong, I will need to troubleshoot Celestial Tools.
Stan
-----Original Message-----
From: Andrés Ruiz <NoReply_AndresRuiz@fer3.com>
To: slk1000 <slk1000@aol.com>
Sent: Fri, Jun 23, 2017 12:54 pm
Subject: [NavList] 3 sights SR example
From: Andrés Ruiz <NoReply_AndresRuiz@fer3.com>
To: slk1000 <slk1000@aol.com>
Sent: Fri, Jun 23, 2017 12:54 pm
Subject: [NavList] 3 sights SR example
DR 20/02/1990 06:42:34 UT
11º 20.0' S
178º 30.0' E
SOG = 0
3 sights:
Date UT Star GHA Dec Ho
20/02/1990 06:39:15 Sirius 148.5701201 -16.70358745 57.97742057
20/02/1990 06:40:54 Capella 171.1717579 45.99316887 32.4679352
20/02/1990 06:42:34 Pollux 134.3985921 28.05125701 30.29880443
Fix at 06:42:34 UT?
please send your solution, and the used method.
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