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IAUC 7969: C/2002 Q9, Q10, Q11, Q12, Q13, Q14, C/2002 R1; P/2002 R2

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                                                  Circular No. 7969
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)


COMETS C/2002 Q9, Q10, Q11, Q12, Q13, Q14, C/2002 R1 (SOHO)
     Further to IAUC 7963, D. Hammer reports measurements for
additional comets found on SOHO website images by R. Kracht (C/2002
Q9, C/2002 Q10, C/2002 R1; C2 coronagraph), J. Sachs (C/2002 Q11;
C3 images; Kreutz member), and D. Evans (the rest; C3; Kreutz
comets).  C/2002 Q10 is a member of the Kracht group (cf. IAUC
7952), and C/2002 R1 is of the Marsden group (cf. IAUC 7832).  The
reduced astrometry and orbital elements by B. G. Marsden appear on
the MPECs cited below.

  Comet         2002 UT          R.A. (2000) Decl.       MPEC
  C/2002 Q9     Aug. 19.254       9 57.5   +12 38       2002-R02
  C/2002 Q10         27.601      10 17.4   +11 14       2002-R02
  C/2002 Q11         29.638      10 14.9   + 8 39       2002-R02
  C/2002 Q12         18.529       9 33.1   +12 05       2002-R34
  C/2002 Q13         27.138      10 04.8   + 9 24       2002-R34
  C/2002 Q14         29.679      10 16.3   + 8 51       2002-R34
  C/2002 R1     Sept. 2.681      10 40.0   + 9 20       2002-R57


COMET P/2002 R2 (SHOEMAKER 3)
     S. Nakano, Sumoto, Japan, reports the CCD recovery of comet
P/1986 A1 (= 1986a = 1985 XVIII) independently by T. Oribe (1.03-m
reflector, Saji; diffuse coma of diameter 10", hint of tail toward
the west on R-band images) and by A. Nakamura (0.60-m reflector,
Kuma; diffuse with some central condensation, coma diameter 12",
unfiltered images).

     2002 UT             R.A. (2000) Decl.        m1    Observer
     Sept. 9.77985    6 15 33.06   +20 09 10.5   18.0   Oribe
          12.80936    6 22 26.57   +20 10 23.9   18.6   Nakamura

The indicated correction to the prediction on MPC 34423 is Delta(T)
= -0.14 day.  Additional positions, the following orbital elements
by Nakano (from 75 observations, 1986-2002), and an ephemeris
appear on MPEC 2002-R69:

                    Epoch = 2003 Jan.  1.0 TT
     T = 2002 Dec. 14.88307 TT        Peri. =  14.92931
     e = 0.7268084                    Node  =  97.27277 2000.0
     q = 1.8136046 AU                 Incl. =   6.38642
       a =  6.6385811 AU   n = 0.05762238   P =  17.105 years

                      (C) Copyright 2002 CBAT
2002 September 13              (7969)            Daniel W. E. Green

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