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IAUC 8795: P/2007 A3

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                                                  Circular No. 8795
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 P/2007 A3 (PETRIEW)
     F. Fratev, E. Mihaylova, and A. Kirchev, Sofia, Bulgaria,
report the recovery of comet P/2001 Q2 (cf. IAUC 7686) on
unfiltered CCD images taken with a 0.25-m f/3.2 reflector at
Zvezdno Obshtestvo Observatory (Plana), noting a diffuse coma of
diameter about 0'.2.  Additional CCD astrometry has been reported
by L. Buzzi and F. Luppi (Varese, Italy, 0.60-m reflector; comet
approximately 1' east of prediction; quite diffuse with a round
inner coma of size about 15"-20" in stacked 15-s exposures), W.
Hasubick (Buchloe, Germany), and K. Kadota (Ageo, Saitama-ken,
Japan, 0.25-m reflector; coma diameter 0'.7; diffuse with moderate
condensation and no tail).

     2007 UT             R.A. (2000) Decl.       Mag.   Observer
     Jan. 11.69458   21 15 04.98   - 9 04 27.9   16.1   Fratev
          11.69961   21 15 06.11   - 9 04 20.7   16.1     "
          11.70273   21 15 06.61   - 9 04 21.2   16.1     "
          13.70378   21 22 24.07   - 8 43 33.7   15.9     "
          13.71309   21 22 26.41   - 8 43 24.8   15.9     "
          13.71569   21 22 27.03   - 8 43 24.3   15.9     "
          13.71957   21 22 27.88   - 8 43 24.3          Buzzi
          13.72247   21 22 28.45   - 8 43 23.6            "
          13.72301   21 22 28.57   - 8 43 16.1   15.9   Fratev
          13.72495   21 22 29.04   - 8 43 21.5          Buzzi
          13.72621   21 22 29.33   - 8 43 21.3   17.3   Hasubick
          13.72713   21 22 29.33   - 8 43 20.5   15.9   Fratev
          13.72734   21 22 29.57   - 8 43 19.4          Buzzi
          13.73018   21 22 30.20   - 8 43 17.6   16.5     "
          14.37541   21 24 52.63   - 8 36 22.8          Kadota
          14.37720   21 24 53.03   - 8 36 21.5            "
          14.37906   21 24 53.46   - 8 36 20.6   15.1     "

     The indicated correction to the prediction on MPC 51822 is
Delta(T) = -0.04 day.  The following orbital elements are by B. G.
Marsden, from 434 observations 2001-2007 (mean residual 0'.7):

                    Epoch = 2007 Mar.  1.0 TT
     T = 2007 Feb. 24.5806 TT         Peri. = 181.9215
     e = 0.698129                     Node  = 214.1025  2000.0
     q = 0.937602 AU                  Incl. =  13.9747
       a =  3.105970 AU    n = 0.1800563    P =   5.47 years

                      (C) Copyright 2007 CBAT
2007 January 14                (8795)            Daniel W. E. Green

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