[IAUC] CBET 3142: 20120615 : COMET P/2012 K9 (GIBBS)
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Vie Jun 15 11:05:27 ART 2012
Electronic Telegram No. 3142
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/2012 K9 (GIBBS)
H. Sato (Tokyo, Japan) reports the recovery of comet P/2006 Y2 (cf. IAUCs
8787, 8796) on images taken remotely at the RAS Observatory near Mayhill, NM,
U.S.A. (astrometry tabulated below; the May 17 and June 16 data were obtained
with a 0.43-m f/6.8 astrograph, and the remaining data were obtained with a
0.51-m f/6.8 astrograph). No coma was obvious on twelve stacked 60-s
exposures taken on May 17 but a 10" coma with no tail was present on eleven
60-s stacked images from June 13; the 0.43-m telescope total V-band magnitudes
were measured within a circular aperture of radius 5".7. Nine stacked 60-s
images from May 16 show a faint coma of size 8"; the same revealed a 10" coma
on June 14, and the total V-band magnitudes from the 0.51-m telescope were
measured within a circular aperture of radius 4".9.
2012 UT R.A. (2000) Decl. Mag. Observer
May 16.14203 6 48 44.10 +27 10 26.4 Sato
16.14484 6 48 44.69 +27 10 27.3 "
16.14765 6 48 45.30 +27 10 27.4 20.1 "
17.14183 6 52 43.73 +27 12 03.8 "
17.14479 6 52 44.46 +27 12 04.4 "
17.14775 6 52 45.20 +27 12 04.7 20.0 "
June 13.14586 8 42 04.29 +25 10 06.1 "
13.15120 8 42 05.63 +25 10 02.9 19.9 "
14.14832 8 46 03.72 +24 59 36.5 "
14.15113 8 46 04.34 +24 59 34.0 "
14.15394 8 46 05.13 +24 59 33.0 20.0 "
The indicated correction to the prediction by S. Nakano in the International
Comet Quarterly's 2011/2012 Comet Handbook is Delta(T) = +0.05 day. The
following linked orbital elements by G. V. Williams are from 131 observations
spanning 2006 Nov. 10-2012 June 14 (mean residual 0".6); they appear,
together with residuals and an ephemeris, on MPEC 2012-L44.
Epoch = 2012 June 2.0 TT
T = 2012 May 20.86037 TT Peri. = 34.48859
e = 0.5872476 Node = 105.87684 2000.0
q = 1.2633710 AU Incl. = 11.53462
a = 3.0608445 AU n = 0.18405270 P = 5.36 years
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2012 CBAT
2012 June 15 (CBET 3142) Daniel W. E. Green
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