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IAUC 8383: C/2004 P1; 2004dp; 2004dg

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IAUC number

                                                  Circular No. 8383
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
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 P1 (NEAT)
     K. J. Lawrence, Jet Propulsion Laboratory, reports the
discovery by the NEAT project of a slightly diffuse comet (coma
diameter about 3"; discovery observation below) on CCD images taken
with the Palomar 1.2-m Schmidt telescope.  Following posting on the
'NEO Confirmation Page', other CCD observers have remarked on the
object's cometary appearance, including J. Ticha and M. Tichy at
Klet (1.06-m telescope; object diffuse with an asymmetric coma or
faint tail toward p.a. 250 deg and red mag 18.7-18.8 on Aug. 7.92
UT; coma diameter 13" and faint tail in p.a. 250 deg on Aug. 8.88);
P. Birtwhistle at Great Shefford, Berkshire, England (0.30-m f/6.3
reflector; object distinctly diffuse with a diameter of 10" --
three times the size of star images of similar brightness on co-
added images taken on Aug. 7.94-7.96); and P. Kusnirak at Ondrejov
(0.65-m f/3.6 reflector; diffuse with coma diameter 10" on Aug.
7.93 and 7.97).

     2004 UT             R.A. (2000) Decl.       Mag.
     Aug.  5.32080   21 42 35.46   +12 44 16.6   19.9

The available astrometry, the following very preliminary parabolic
orbital elements, and an ephemeris appear on MPEC 2004-P23.

     T = 2006 May  13.024 TT          Peri. =  99.711
                                      Node  = 290.544   2000.0
     q = 5.69231 AU                   Incl. =  32.213

     T. Puckett and M. Peoples, Mountain Town, GA, report the
discovery of an apparent supernova (mag 18.2) on unfiltered CCD
frames taken with the Puckett Observatory 0.35-m automated
supernova patrol telescope on Aug. 7.21 and 8.19 UT.  The new
object is located at R.A. = 21h33m52s.27, Decl. = +41o51'01".4
(equinox 2000.0), which is 3".7 west and 6".3 south of the center
of the apparent host galaxy.  SN 2004dp was not present on nine
images taken by Puckett from 2000 to 2003 (limiting mag about 20.0).

SUPERNOVA 2004dg IN NGC 5806
     Additional unfiltered CCD magnitudes of SN 2004dg (cf. IAUC
8375):  June 14.673 UT, [18.3 (Itagaki); July 22.493, 17.4
(Itagaki); Aug. 7.844, 17.6 (E. Prosperi, Larciano, Italy).

                      (C) Copyright 2004 CBAT
2004 August 8                  (8383)            Daniel W. E. Green

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