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IAUC 7949: C/2002 O7; P/2002 O8

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IAUC number


                                                  Circular No. 7949
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


COMET C/2002 O7 (LINEAR)
     An apparently asteroidal object reported by LINEAR on July 29.2
UT (discovery observation given below) has been found to be cometary
by A. Boattini on CCD images taken with the 0.60-m Schmidt at Campo
Imperatore on Aug. 2.9 and by J. Ticha and M. Tichy with the 0.57-m
telescope at Klet on Aug. 4.9 (comet slightly diffuse with a coma of
diameter 8").

     2002 UT             R.A. (2000) Decl.        m2
     July 29.17312   14 25 04.75   +46 29 25.2   20.0

The available astrometry and the following quite uncertain parabolic
orbital elements appear on MPEC 2002-P13:

     T = 2003 Sept. 9.767 TT          Peri. = 254.585
                                      Node  =  12.413   2000.0
     q = 0.80481 AU                   Incl. =  99.088


COMET P/2002 O8 (NEAT)
     K. Lawrence, Jet Propulsion Laboratory, reports the discovery
of a comet (with nuclear condensation of diameter about 6" and a tail
extending about 10" to the west) on NEAT images obtained on July 29.3
UT (discovery observation appears below). Confirmation of cometary
activity was reported by A. C. Gilmore and P. M. Kilmartin on CCD
images taken with the 0.6-m reflector at Mt John University Observatory
on Aug. 4.4 (faint tail 40" in p.a. 255 deg). Prediscovery observations
have been identified in NEAT data from July 16.5, LINEAR data from
July 5.4 and Spacewatch data from 2001 May 22.3 and June 11.2.

     2002 UT             R.A. (2000) Decl.        m1
     July 29.32442   21 31 32.67   -31 01 25.2   17.5

The available astrometry and the following orbital elements appear on
MPEC 2002-P14:

                    Epoch = 2002 May   6.0 TT
     T = 2002 May   8.5788 TT         Peri. = 222.2742
     e = 0.199307                     Node  =  75.5018  2000.0
     q = 3.229439 AU                  Incl. =  12.7858
       a =  4.033306 AU    n = 0.1216781    P =   8.100 years

                      (C) Copyright 2002 CBAT
2002 August 5                  (7949)          Carl W. Hergenrother

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