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IAUC 8448: P/2004 WR_9; 2004gn, 2004go

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IAUC number


                                                  Circular No. 8448
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/2004 WR_9 (LINEAR)
     An apparently asteroidal object discovered by LINEAR, and
published as 2004 WR_9 on MPO 120656 (discovery observation below),
has been found to show cometary appearance.  P. Birtwhistle, Great
Shefford, U.K., reports that CCD images taken on Dec. 7.0 UT with a
0.30-m f/6.3 reflector show the object as having a tail 20" long in
p.a. 235 deg and a very concentrated coma with a diameter of 9",
while on images from Dec. 3.0, there had been a suggestion of a 10"
tail in p.a. 250 deg.  C. Hergenrother reports that R-band images
taken with the Catalina 1.54-m reflector on Dec. 8.45 show a highly
condensed coma 11" in diameter and a faint tail > 25" long in p.a.
235 deg.

     2004 UT             R.A. (2000) Decl.       Mag.
     Nov. 22.32392    5 31 41.94   +30 19 19.2   18.7

The available astrometry, the following orbital elements, and an
ephemeris appear on MPEC 2004-X28.

     T = 2005 Jan. 11.3666 TT         Peri. =  70.5784
     e = 0.683440                     Node  =  25.4444  2000.0
     q = 1.917200 AU                  Incl. =   5.0473
       a =  6.056348 AU    n = 0.0661284    P =  14.90 years


SUPERNOVAE 2004gn AND 2004go
     Further to IAUC 8447, W. Li reports the LOSS discovery of an
apparent supernova (mag about 16.6) on an unfiltered KAIT image
taken on Dec. 1.57 UT.  SN 2004gn is located at R.A. = 12h34m12s.10,
Decl. = +2o39'34".4 (equinox 2000.0), which is 55".0 east and 21".4
north of the nucleus of NGC 4527.  A KAIT image on June 10.21
showed nothing at this position (limiting mag about 19.0).  H.
Yamaoka, Kyushu University, reports that K. Itagaki, Yamagata,
Japan, has confirmed the existence of the new object at red mag
about 16.7 in unfiltered CCD images taken on Dec. 2.806 (the
position end figures given as 12s.10, 34".7).
     H. Pugh and Li report the LOSS discovery of another apparent
supernova on unfiltered KAIT images taken on Nov. 18.32 (at mag
16.5), 23.25 (mag 16.6), Dec. 4.32 (mag 17.3), and 5.29 UT (mag
17.3).  SN 2004go is located at R.A. = 2h55m41s.76, Decl. =
-14o14'14".5 (equinox 2000.0), which is 34".8 west and 105".7 south
of the nucleus of IC 270.  A KAIT image taken on Oct. 14.43 showed
nothing at this position (limiting mag about 19.0).

                      (C) Copyright 2004 CBAT
2004 December 8                (8448)            Daniel W. E. Green

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