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IAUC 8429: C/2004 V3; C/2004 V4; 78P

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IAUC number


                                                  Circular No. 8429
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/2004 V3 (SIDING SPRING)
     R. H. McNaught, Siding Spring Observatory, reports the
discovery of an object (discovery observation below) on images
taken by G. J. Garradd with the 0.5-m Uppsala Schmidt telescope in
the course of the Siding Spring Survey; McNaught later (Nov. 5 and
6) found the object to be slightly diffuse on CCD images taken with
the Siding Spring 1.0-m f/8 reflector.

     2004 UT             R.A. (2000) Decl.       Mag.
     Nov.  3.39963   21 45 05.68   -45 38 51.5   18.8

The available astrometry, the following preliminary parabolic
orbital elements, and an ephemeris appear on MPEC 2004-V33.

     T = 2005 Jan. 22.836 TT          Peri. = 334.694
                                      Node  = 354.211   2000.0
     q = 4.15415 AU                   Incl. =  51.393


COMET C/2004 V4 (NEAT)
     K. J. Lawrence, Jet Propulsion Laboratory, reports the NEAT
discovery of a comet (discovery observation below) on images taken
with the 1.2-m Schmidt telescope at Palomar, the object showing
very slight coma, but no tail.  R. H. McNaught confirms that the
object shows a slightly diffuse nuclear condensation and a 40"-long
fan tail centered in p.a. 280 deg (the fan spanning 25 deg) on
240-s images obtained with the Siding Spring 1-m reflector on Nov.
6.7.

     2004 UT             R.A. (2000) Decl.       Mag.
     Nov.  5.45377    4 22 36.96   + 3 39 28.3   18.8

The available astrometry, the following preliminary parabolic
orbital elements, and an ephemeris appear on MPEC 2004-V34.

     T = 2005 Mar.  3.054 TT          Peri. =  42.667
                                      Node  =  89.156   2000.0
     q = 1.27183 AU                   Incl. =  16.909


COMET 78P/GEHRELS
     Visual total magnitudes by A. Baransky, Pylypovychi, Ukraine
(0.36-m reflector):  Sept. 18.93 UT, 12.0; Oct. 13.99, 11.0; Nov.
4.82, 10.4.

                      (C) Copyright 2004 CBAT
2004 November 6                (8429)            Daniel W. E. Green

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