Egy üstököstörténeti érdekesség:
Nyolcvan évvel a felfedezés után, és sajnos már a felfedező halála
után Clyde Tombaugh posthumus megkapta első üstökösét.
Sry
---------- Forwarded message ----------
Date: Thu, 13 Dec 2012 20:55:04 +0100 (CET)
From: Lucia
To: sky@titan.physx.u-szeged.hu
Subject: CBET 3342: 20121213 : COMET P/2012 WX_32 = 1931 AN = 2003 WZ_141
(TOMBAUGH-TENAGRA)
Electronic Telegram No. 3342
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director: Daniel W. E. Green; Hoffman Lab 209; Harvard University;
20 Oxford St.; Cambridge, MA 02138; U.S.A.
e-mail: cbatiau@eps.harvard.edu (alternate cbat@iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network
COMET P/2012 WX_32 = 1931 AN = 2003 WZ_141 (TOMBAUGH-TENAGRA)
Syuichi Nakano, Sumoto, Japan, has identified comet P/2012 WX_32 (cf.
CBET 3329) with an apparently asteroidal object discovered by the LINEAR
survey on 2003 Nov. 21 and 23 (and given the minor-planet designation 2003
WZ_141; cf. MPS 92135) and with the comet found belatedly by Clyde Tombaugh
at Lowell Observatory in 1932 from plates exposed on January 1931 (discovery
observations tabulated below; see also IAUC 6161, and MPC 24423 and 24544),
as outlined by D. H. Levy et al. (1995, Int. Comet Q. 17, 52); Levy et al.
noted the comet to be diffuse with strong condensation with a tail at least
2´ long in p.a. about 270 deg on those 1931 plates. Spacewatch astrometry
of 2003 WZ_141 from 2003 Dec. 18 gave magnitude 17-18.
1931 UT R.A. (2000) Decl. Mag. Observer
Jan. 11.25903 8 34 50.84 +33 42 38.1 12.5 Tombaugh
12.28750 8 34 15.36 +33 53 20.8 "
13.28681 8 33 38.39 +34 04 04.6 "
The following orbital elements by G. V. Williams (from 125 observations
spanning 1931 Jan. 12-2012 Dec. 13; mean residual 0".53), along with
residuals and an ephemeris, appear on MPEC 2012-X79.
Epoch = 1931 Jan. 19.0 TT
T = 1931 Jan. 15.24391 TT Peri. = 34.47426
e = 0.4387011 Node = 85.67590 2000.0
q = 2.4368809 AU Incl. = 16.19522
a = 4.3415034 AU n = 0.10895417 P = 9.05 years
Epoch = 2004 Mar. 16.0 TT
T = 2004 Mar. 9.83331 TT Peri. = 39.52546
e = 0.4350130 Node = 83.57298 2000.0
q = 2.4669499 AU Incl. = 16.05033
a = 4.3663836 AU n = 0.10802425 P = 9.12 years
Epoch = 2013 Mar. 9.0 TT
T = 2013 Feb. 23.35003 TT Peri. = 38.45834
e = 0.4400716 Node = 81.36298 2000.0
q = 2.4418922 AU Incl. = 15.83852
a = 4.3610795 AU n = 0.10822138 P = 9.11 years
NOTE: These ´Central Bureau Electronic Telegrams´ are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2012 CBAT
2012 December 13 (CBET 3342) Daniel W. E. Green
________________________________________________________________________
A csatolmányként küldött képeket kérjük, méretezd át úgy, hogy a
hosszabbik oldaluk legfeljebb 800 pixeles legyen! Köszönjük!
Általános információk és tanácsok a képbeküldéssel kapcsolatban:
http://meteor.mcse.hu/digitalis_kepek.html
________________________________________________________________________
Leonidak levelezőlista - Észlelő amatőrcsillagászok fóruma
Hozzászólások: Leonidak@mcse.hu
Listakezelő utasítások: Leonidak-request@mcse.hu
Archívum, beállítások: http://mailman.mcse.hu/mailman/listinfo/leonidak