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#11
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MOON - VESTA, Aug, 07, Wk 3
On 20 Ago, 05:53, Ben wrote:
Eliseo, My computer could not open the file supplied by your link but I will recheck the data for Aug 14, 18h. If you could fill me in on the error I would be most grateful since my spreadsheet is still a work in progress. Thanks, Ben Eliseo, I rechecked the data and it was the same as that entered. Did you set the date for Aug 14.75 (18h)? Ben Hallo! Sorry but I don't use a speadsheet for astronomical computation. My preferred sw is SOLEX ( http://chemistry.unina.it/~alvitagl/solex/ ). It'is a powerful numerical integrator very accurate and therefore useful for the predictions of occultations, eclipses, transit and so on. During this year we can see only an occultation of Vesta by the Moon but not for London (and not even for the Europe). I calculated again the geocentric circumstances. There a Conditions of minimum geocentric angular distance (within 2.000ø) Date TDT Dm m1 m2 tm(s) 2007/12/12 21:30:12 0.38211 -9.0 7.8 3431 Moon - Vesta Where Dm is the minimum (geocentric) distance expressed in degrees; m1- m2 are the magnitudes of the two celestial bodies, and tm(s) is the max duration (in seconds) of the "eclipse". Now You can see the graphic solution obtained with Solex 9.12 http://cjoint.com/data/iukkoaboHF.htm Note that the "shadow" will be visible but only in the southern emisphere. Best regards. Eliseo PS.: You can read many examples, explanations of algorithms, and a lot of predictions of asteroidal occultation (but mainly in italian language (sorry!) into the following site: http://ephemerides.astronomiques.ifrance.com |
#12
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MOON - VESTA, Aug, 07, Wk 3
Gesu, Maria i tutti gli Santi!
That is one impressive apparatus and I didn't even know it existed. My Italian is not quite competent but it's worth reviewing just to look around this application. Thank you for calling my attention to it. I didn't mean to imply that the Moon would occult Vesta anytime soon - this cropped in Sciastro.amateur the other day. I just put Vesta in the posts because it's such an easy binocular target. Sincere thanks, Ben |
#13
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MOON - VESTA, Aug, 07, Wk 3
On 20 Ago, 12:25, Ben wrote:
Gesu, Maria i tutti gli Santi! That is one impressive apparatus and I didn't even know it existed. My Italian is not quite competent but it's worth reviewing just to look around this application. Thank you for calling my attention to it. Program SOLEX has been completely written in English. Also the technical handbook is written in English. The program works only with the operating system Wndows but not with Linux. I didn't mean to imply that the Moon would occult Vesta anytime soon - this cropped in Sciastro.amateur the other day. I just put Vesta in the posts because it's such an easy binocular target. Yes, sure! Sincere thanks, Ben Bye Eliseo |
#14
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MOON - VESTA, Aug, 07, Wk 3
Moon, Aug 21,
18h UTC coords: 16 15 s 26 37 long trmntr: w 12.29d sin cent long: -0.213 ecc ell: 0.9888 dist: 248 775 mi / 400 365 km diam: 29.8' illum: 57.4% Moonset London: 21:41 GMT Features: N- Schroeter, "Gruithuisen's City" (hills to N), Eratosthenes, Wallace (dgrd), Archimedes, Grabau Ridge, Spitzbergen Mts, Plato + craterlets, N Limb (++) Libration: w 3.7d, n 7.66d at 18h trmntr xing Timocharis S- Flammarion (dgrd) + rille, Lalande, Davey, Lasell, Rupes Recta (+), Birt, Deslandres (ruin)/Lexell/Ball/Hell at 18h trmntr xing Tycho and Clavius Moon trav 11.11d @ 0.463 d/h VESTA: 16 26 44 s 20 35 7.1 mag, trav 41"/h Vesta is ca. 0.75d SE of Psi Scorpii Thanks for the kind ratings, Ben, 90.126 n 35.539 |
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