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IAUC 8879: P/2007 T3

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                                                  Circular No. 8879
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://www.cfa.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


COMET P/2007 T3 (SHOEMAKER-LEVY)
     R. H. McNaught reports his recovery of comet P/1990 V1 (=
1990o = 1990 XV; cf. IAUC 5135) on CCD images taken with the 0.5-m
Uppsala Schmidt telescope at Siding Spring; the comet shows a 10"
coma and no tail on Oct. 12, and McNaught's astrometric measures
are given below:

     2007 UT             R.A. (2000) Decl.       Mag.
     Oct. 12.44402   18 51 51.48   -50 45 12.6   18.2
          12.45295   18 51 53.13   -50 45 08.6   18.2
          12.46192   18 51 54.50   -50 45 02.2   18.3
          12.47080   18 51 56.16   -50 44 57.5   18.5
          12.51989   18 52 04.55   -50 44 28.4   18.0
          13.41858   18 54 40.98   -50 35 47.2   18.1

The indicated correction to the orbital elements on MPC 51824 is
Delta(T) = +4.5 days.  Orbital elements by B. G. Marsden from 36
observations spanning 1990-2007 (mean residual 0".8; ephemeris H_10
= 15.0):

                    Epoch = 1990 Sept.26.0 TT
     T = 1990 Sept.18.5921 TT         Peri. = 310.6225
     e = 0.771949                     Node  =  52.0443  2000.0
     q = 1.524077 AU                  Incl. =  24.3335
       a =  6.683058 AU    n = 0.0570481    P =  17.28 years

                    Epoch = 2007 Dec.  6.0 TT
     T = 2007 Dec. 17.3371 TT         Peri. = 312.8443
     e = 0.773589                     Node  =  51.6501  2000.0
     q = 1.460069 AU                  Incl. =  24.5612
       a =  6.448748 AU    n = 0.0601854    P =  16.38 years

2007 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase   Mag.
Oct.  7    18 36.70   -51 33.4   1.487   1.703   84.0   35.7   18.2
     17    19 05.32   -49 58.8   1.495   1.645   79.9   36.6   18.0
     27    19 36.79   -47 54.2   1.502   1.593   76.3   37.3   17.9
Nov.  6    20 09.99   -45 13.4   1.509   1.548   73.2   37.8   17.8
     16    20 43.88   -41 52.6   1.518   1.512   70.6   38.1   17.7
     26    21 17.54   -37 51.4   1.531   1.484   68.3   38.2   17.6
Dec.  6    21 50.30   -33 13.1   1.551   1.467   66.4   38.0   17.6
     16    22 21.81   -28 04.2   1.581   1.460   64.6   37.5   17.6
     26    22 51.92   -22 34.1   1.623   1.464   62.8   36.7   17.7

                      (C) Copyright 2007 CBAT
2007 October 13                (8879)            Daniel W. E. Green

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