[IAUC] CBET 3404: 20130206 : COMET P/2013 C1 = P/2004 H2 (LARSEN)
quai en eps.harvard.edu
quai en eps.harvard.edu
Mie Feb 6 12:54:04 ART 2013
Electronic Telegram No. 3404
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/2013 C1 = P/2004 H2 (LARSEN)
J. V. Scotti, Lunar and Planetary Laboratory, University of Arizona,
reports his recovery of comet P/2004 H2 (cf. IAUC 8328) on CCD images obtained
with the Spacewatch 1.8-m telescope (astrometry tabulated below). On the Feb.
5 images, he measured a coma diameter of 8" and a faint tail extending 0'.13
in p.a. 288 degrees; on Feb. 6, clouds interfered with detailed measurements,
but the comet appeared diffuse.
2013 UT R.A. (2000) Decl. Mag. Observer
Feb. 5.50083 11 52 05.63 +10 04 52.5 19.4 Scotti
5.51911 11 52 05.43 +10 04 58.9 19.4 "
5.53715 11 52 05.23 +10 05 05.2 19.5 "
6.41451 11 51 56.11 +10 10 18.4 "
6.43355 11 51 55.87 +10 10 25.3 19.4 "
6.46045 11 51 55.54 +10 10 34.8 "
The indicated correction to the prediction by S. Nakano in the ICQ 2012 Comet
Handbook is Delta(T) = -0.58 day. The following linked orbital elements by
G. V. Williams (from 67 observations spanning 2004 Apr. 19-2013 Feb. 6; mean
residual 0".6) and an ephemeris appear on MPEC 2013-C25.
Epoch = 2013 Dec. 14.0 TT
T = 2013 Dec. 11.03943 TT Peri. = 104.59786
e = 0.4174992 Node = 131.50849 2000.0
q = 2.6359616 AU Incl. = 11.77240
a = 4.5252494 AU n = 0.10238593 P = 9.63 years
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2013 CBAT
2013 February 6 (CBET 3404) Daniel W. E. Green
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