NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Working a lunar. was: lunar distance in Wikipedia
From: UNK
Date: 2009 Jul 23, 13:49 -0700
From: UNK
Date: 2009 Jul 23, 13:49 -0700
----- Original Message ----- From: Antoine M. Cou?tte To: George Huxtable Sent: Thursday, July 23, 2009 9:51 PM Subject: 090723 Lunar Moon-Mars Apr 08, 2001 Jul 23, 2009 Antoine M. Cou?tte 40, Rue des Carr?s F-44760 La Bernerie en Retz France +33-(0)2 40 64 19 57 Dear Sir, In a Document on Lunar distances I found on the web, you published the following example, but I was not able to find any published solution from you. So runs this example : Apr 08, 2001 All observations time(s) are given from the stop watch used, which is supposed to be indicating a time (very) close to UT1. Observed heights have been (mathematically) reduced into the very same time. As a consequence you published only one single and same time for all observations. Approximate Position : N 44? / W 012? Watch time : 3h22m05s0 (same time for all observations, see above) All distances corrected for sextant error and index correction : Moon-Mars Distance : -65?11'9 (i.e. from Mars to opposite Moon limb) Moon Lower limb : 31?12'3 (once corrected for dip, i.e. equivalent to a height observed exactly from Sea level with no sextant or index error as indicated earlier) Mars height : 17?48'2 (same remarks as above) DID YOU PUBLISH YOUR RESULTS FOR THIS EXAMPLE ? Reworking your example with TT-UT = 64.0 seconds, I have obtained the following result : - Observed UT1 at time of Moon-Mars Sextant distance is equal to 3h21m09s4, which makes watch used 55.6 seconds fast. DO YOU HAVE OTHER EXAMPLES FOR ME TO TRY COMPUTING ? ( I already worked on two other examples from you : - Apr 26, 2004 for which you published observed UT1 equal to 20h16m44s0 and, - Apr 02, 2001 for which you published observed UT1 equal to 17h40m28s0 .) Thanking you for your Kind Attention, and awaiting your reply, I am remaining, Most Sincerely Yours Antoine M. Cou?tte +33-(0)6 12 88 06 36 antoineXXX-club.fr ------------------------------------------------------ [Sent from archive by: acouette-AT-eagle-aviation.net] --~--~---------~--~----~------------~-------~--~----~ NavList message boards: www.fer3.com/arc Or post by email to: NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
