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Re: 1901 May, 22 Lunar example by French Navy Captain Arago
From: Paul Hirose
Date: 2010 Jan 23, 15:43 -0800
From: Paul Hirose
Date: 2010 Jan 23, 15:43 -0800
antoine.m.couette@club-internet.fr wrote: > In the quoted example (1901 May,22 Lunar example) F.N. Captain Arago > gives an example of an occultation. > From position N48°23'30" W004°29'31.18" (Brest military harbourg) he > observes an occultation of the star Khi Can by the Moon. > Actually, given the star coordinates he uses, I rather think that this > star nowadays is kappa Can (change of name in between ??? ). > For this position, and given the data he uses,he finds an occultation > (immersion) time equal to 10h53m17.3s Paris time, which in to-day time > reckoning is equal to 22h43m56.379S UT. > COMPLEMENTARY INFORMATION : The Moon Center height is laso quoted as > being 53°24' (This forgotten data can be easily reconstructed) Antoine, something is wrong. At 1901 May 22 22:44 UT the bodies are too far apart for an occultation, and the Moon is too low. az alt 281° 9° Moon 271° 14° kappa Cancri 291° 18° khi (chi) Cancri --
