[IAUC] IAUC 9040: 2002 VF_130; P/2009 H2 [25139-2009/08-R1]
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Circular No. 9040
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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2002 VF_130
K. S. Noll and S. D. Benecchi, Space Telescope Science
Institute; and W. M. Grundy, Lowell Observatory, report the
detection of a binary companion to the transneptunian object 2002
VF_130 (MPEC 2002-W30, 2004-V71). The observations were made
during 2008 Nov. 3.8076-3.8396 UT with the Wide Field Planetary
Camera 2 on the Hubble Space Telescope, using the F606W filter
(wide V) for four dithered 260-s exposures. The two components
were widely separated, with an angular distance of 0".733 +/-
0".003. The secondary binary component was fainter by 0.31
magnitude. The secondary was located at -0".576 +/- 0".003 in R.A.
and 0".453 +/- 0".001 in Decl. relative to the primary.
COMET P/2009 H2 (McNAUGHT)
Automatic procedures at the Minor Planet Center identified
comet P/2004 K2 (cf. IAUC 8348) in incidental astrometry obtained
by T. H. Bressi with the Spacewatch 0.9-m f/3 reflector on Apr. 28.
Subsequently, recovery observations were independently reported by
G. Muler, J. M. Ruiz, and R. Naves with the 0.30-m Schmidt-
Cassegrain telescope at the Observatorio Nazaret (Lanzarate, Spain)
on May 1 and 3. No information was provided about the comet's
appearance. The first observation of each set is provided below:
2009 UT R.A. (2000) Decl. Mag. Observer
Apr. 28.36557 16 03 06.17 - 7 33 49.0 Spacewatch
May 1.04433 16 01 23.07 - 7 18 04.3 20.2 Muler
3.05734 15 59 59.04 - 7 06 17.5 20.0 "
The indicated correction to the predictions on MPC 56805 and
in the 2008/2009 Comet Handbook is Delta(T) = -0.08 day. The
remaining astrometry and the following (and additional) orbital
elements from 155 observations spanning 2004 May 20-2009 May
3, together with residuals and an ephemeris, appear on CBET 1790.
Epoch = 2010 Jan. 4.0 TT
T = 2009 Dec. 15.4321 TT Peri. = 180.7575
e = 0.502681 Node = 150.1181 2000.0
q = 1.548625 AU Incl. = 8.1327
a = 3.113947 AU n = 0.1793648 P = 5.495 years
(C) Copyright 2009 CBAT
2009 May 3 (9040) Daniel W. E. Green
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