[IAUC] CBET 2084: 20091220 : COMET C/2009 Y1 (CATALINA)

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                                                  Electronic Telegram No. 2084
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS en CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT en CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html


COMET C/2009 Y1 (CATALINA)
     An apparently asteroidal object reported by R. E. Hill (discovery
observation below) using the 0.68-m Schmidt at the Catalina Sky Survey and
added to the NEO Confirmation Page was shown to be cometary by W. H. Ryan
and E. V. Ryan at the Magdalena Ridge Observatory, when observations on
Dec. 18.4 and 20.5 UT with the 2.4-m f/8.9 reflector showed a faint tail in
p.a. 260 deg.  Hints of cometary activity on the western side of the nucleus
were also suspected by H. Sato (RAS Observatory, Mayhill, 0.25-m f/3.4
reflector) on Dec. 18.4 and by L. Buzzi (Schiaparelli Observatory, 0.60-m
f/4.64 reflector) on Dec. 20.2.

     2009 UT             R.A. (2000) Decl.       Mag.   Observer
     Dec. 17.51495   12 10 29.85   +44 28 31.3   19.4   Hill

     Further astrometry, the following parabolic orbital elements and an
ephemeris are given on MPEC 2009-Y33.

     T = 2011 Jan. 25.403 TT          Peri. = 128.725
                                      Node  = 160.385   2000.0
     q = 2.44938 AU                   Incl. = 107.503


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                         (C) Copyright 2009 CBAT
2009 December 20                 (CBET 2084)              Brian G. Marsden