[IAUC] CBET 2944: 20111218 : COMET P/2011 Y1 = P/2006 T1 (LEVY)
quai en eps.harvard.edu
quai en eps.harvard.edu
Dom Dic 18 01:35:28 ART 2011
Electronic Telegram No. 2944
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 en eps.harvard.edu (alternate cbat en iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network
COMET P/2011 Y1 = P/2006 T1 (LEVY)
An object found by the Mt. Lemmon Survey and posted on the Minor
Planet Center's NEOCP webpage has been found to show cometary appearance by
CCD astrometrists elsewhere. E. Pettarin (Farra d'Isonzo, Italy; 0.40-m f/4.5
reflector) notes that a central condensation is surrounded by a diffuse coma
that is elongated in p.a. 50 deg. P. Birtwhistle (Great Shefford, Berkshire,
England; 0.40-m f/6 Schmidt-Cassegrain reflector) writes that the object was
diffuse and difficult to measure, with a coma diameter of 12" and a poorly
concentrated center 4" in diameter; a tail extends 14" in p.a. 50 deg. This
appears to be a recovery of comet P/2006 T1 (cf. IAUCs 8757, 8762), with the
indicated correction to the prediction on MPC 75514 being Delta(T) = +2.4 days.
The new available observations are given below:
2011 UT R.A. (2000) Decl. Mag. Observer
Dec. 17.06325 23 05 56.18 +26 59 18.2 19.8 Mt. Lemmon
17.06519 23 05 56.61 +26 59 16.0 20.1 "
17.06719 23 05 56.90 +26 59 12.9 19.6 "
17.72689 23 07 51.72 +26 44 34.5 19.1 Pettarin
17.74935 23 07 55.80 +26 44 02.2 Birtwhistle
17.75524 23 07 56.49 +26 43 55.5 19.6 Pettarin
17.78187 23 08 01.27 +26 43 18.0 Birtwhistle
17.89481 23 08 20.80 +26 40 44.3 19.9 "
17.90425 23 08 22.39 +26 40 31.6 19.3 "
Linked orbital elements by G. V. Williams from 262 observations, 2006
Oct. 2-2011 Dec. 17:
Epoch = 2012 Feb. 3.0 TT
T = 2012 Jan. 14.93632 TT Peri. = 179.62724
e = 0.6682595 Node = 279.74496 2000.0
q = 1.0074539 AU Incl. = 18.26398
a = 3.0368732 AU n = 0.18623619 P = 5.29 years
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2011 CBAT
2011 December 18 (CBET 2944) Daniel W. E. Green
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