[IAUC] IAUC 9166: COMET P/2010 L1 = 2002 Q16 (WISE); COMET C/2010 R1 (LINEAR); C/2009 R5, S/2009 S5 [25139-2011/04-R1]

Mie Sep 14 16:19:50 ART 2011

                                                  Circular No. 9166
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
New postal address:  Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
CBATIAU en EPS.HARVARD.EDU           ISSN 0081-0304
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Prepared using the Tamkin Foundation Computer Network

COMET P/2010 L1 = 2002 Q16 (WISE)
     The recognition at the Minor Planet Center of four
observations of comet P/2010 L1 (cf. IAUC 9151) by the Mt. Lemmon
Survey on Sept. 3.39 UT allowed a refinement of the orbital
elements by B. G. Marsden to T = 2010 Feb. 4.57 TT, P = 8.02 years
(cf. MPEC 2010-R21), with T = 2002 Jan. 19.55 TT at the comet's
previous pass.  As a result, R. Matson, Irvine, CA, was able to
identify and measure observations of the comet on images obtained
by the NEAT Survey at Palomar during 2002 Aug. 27-Sept. 12,
corresponding to a correction Delta(T) = +0.16 day.  The 2002
observations (initial observation below) have been designated
P/2002 Q16 and are given together with a newly-linked orbit on
MPEC 2010-R23.

     2002 UT             R.A. (2000) Decl.       Mag.   Observer
     Aug. 27.46241   22 58 17.18   + 9 06 35.4   20.5   NEAT

COMET C/2010 R1 (LINEAR)
     An apparently asteroidal object discovered by the LINEAR
project (discovery observation tabulated below), and posted on the
'NEOCP' webpage, has been found to be "fuzzy" with a tail in p.a.
about 90 deg by W. H. Ryan and E. V. Ryan on R-band CCD images
taken on Sept. 6.22-6.26 UT with the Magdalena Ridge Observatory
2.4-m reflector.

     2010 UT             R.A. (2000) Decl.       Mag.   Observer
     Sept. 4.14639   18 32 27.40   - 1 58 01.0   20.5   LINEAR

The available astrometry, the following preliminary parabolic
orbital elements by B. G. Marsden, and an ephemeris appear on MPEC
2010-R58.

     T = 2012 July 20.975 TT          Peri. = 131.929
                                      Node  = 339.608   2000.0
     q = 4.25296 AU                   Incl. = 155.907

COMETS C/2009 R5 AND S/2009 S5 (SOHO)
     Further to IAUC 9165, additional Kreutz sungrazers have been
found on SOHO website images -- both objects being slightly diffuse
with no tail.

 Comet        2009 UT        R.A.(2000)Decl.   Inst.  F    MPEC
 C/2009 R5    Sept. 13.013   11 04.9  + 2 47    C3/2  JR   2010-L20
 C/2009 S5          17.513   11 17.3  + 0 56    C3/2  BZ   2010-L21

                      (C) Copyright 2010 CBAT
2010 September 6               (9166)            Daniel W. E. Green