[IAUC] CBET 3216: 20120904 : COMET C/2012 Q1 (KOWALSKI)
quai en eps.harvard.edu
quai en eps.harvard.edu
Mar Sep 4 13:26:44 ART 2012
Electronic Telegram No. 3216
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 C/2012 Q1 (KOWALSKI)
[Editor's note: this replaces the text on CBET 3215 (name in title)]
R. A. Kowalski reports his discovery of a comet on images taken with the
Mount Lemmon 1.5-m reflector (discovery observations tabulated below), with
four 60-s confirming exposures showing a faint, round coma extending from a
slightly diffuse nuclear condensation approximately 20" in diameter. After
being posted on the Minor Planet Center's NEOCP webpage, other cometary
astrometrists have also commented on the object's cometary appearance. Images
taken by R. Holmes (Ashmore, IL, USA; 0.61-m f/4 astrograph; measurers S.
Foglia, L. Buzzi, and T. Vorobjov) without moonlight on Sept. 4.1 UT show a
round coma at least 8" wide. Images taken by P. Miller, P. Roche, A. Tripp,
R. Miles, R. Holmes, S. Foglia, and L. Buzzi (measured by L. Buzzi, S. Foglia,
and T. Vorobjov) with the 2.0-m f/10 "Faulkes Telescope South" reflector at
Siding Spring on Sept. 4.5 shows the comet to be clearly softer than stars
nearby, with a round coma 5" wide.
2012 UT R.A. (2000) Decl. Mag.
Aug. 28.19554 22 13 01.23 +15 29 18.4 18.7
28.20485 22 13 01.12 +15 29 16.6 19.0
28.21411 22 13 01.02 +15 29 15.0 18.8
28.22340 22 13 00.84 +15 29 13.1 19.1
28.27486 22 13 00.04 +15 29 02.9 18.6
28.28495 22 12 59.90 +15 29 01.6 18.9
28.29508 22 12 59.76 +15 28 59.1 18.9
28.30524 22 12 59.58 +15 28 56.8 18.6
The available astrometry, the following preliminary parabolic orbital
elements by G. V. Williams, and an ephemeris appear on MPEC 2012-R08.
T = 2015 Nov. 28.0762 TT Peri. = 209.3612
Node = 174.2854 2000.0
q = 8.582941 AU Incl. = 60.3588
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2012 CBAT
2012 September 4 (CBET 3216) Daniel W. E. Green
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