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IAUC 7862: 2002bt; C/2002 E3, C/2002 F2,, C/2002 F3; C/2002 C1; C/2002 F1

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                                                  Circular No. 7862
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)


SUPERNOVA 2002bt IN UGC 8584
     W. D. Li, University of California at Berkeley, reports the
LOTOSS (cf. IAUC 7514) discovery of an apparent supernova (mag
about 17.9) on an unfiltered CCD image taken with the 0.8-m Katzman
Automatic Imaging Telescope (KAIT) on Mar. 25.4 UT.  The new object
was confirmed on an image taken in moonlight on Mar. 27.4.  SN
2002bt is located at R.A. = 13h36m13s.20, Decl. = -1 02'19".8
(equinox 2000.0), which is 13".2 west and 1".9 south of the nucleus
of the central galaxy of UGC 8584, a triple interacting galaxy
system.  A KAIT image taken on Jan. 19.5 showed nothing at this
position (limiting mag about 19.0).


COMETS C/2002 E3, C/2002 F2, AND C/2002 F3 (SOHO)
     Further to IAUC 7854, D. Hammer reports his measurements of
additional Kreutz sungrazing comets found on SOHO website images by
X. Leprette (C/2002 E3, C3 coronagraph), S. Hoenig (C/2002 F2; C2
and C3), and M. Meyer (C/2002 F3; C2).  Reduced astrometry and
orbital elements by B. G. Marsden appear on the MPECs cited below.

  Comet         2002 UT          R.A. (2000) Decl.       MPEC
  C/2002 E3     Mar. 15.570       0 00.9   - 2 59       2002-F35
  C/2002 F2          20.321       0 17.5   - 1 16       2002-F43
  C/2002 F3          25.204       0 23.4   + 1 22       2002-F61


COMET C/2002 C1 (IKEYA-ZHANG)
     C. W. Hergenrother, Lunar and Planetary Laboratory, reports
that observations with the Catalina 1.5-m reflector on Mar. 3.11,
4.10, 5.10, 9.10, 10.10, and 26.10 UT by J. Barnes, J. Fortney, and
himself, and with a 0.28-m reflector on Mar. 9.81 by G. Masi
(Ceccano, Italy), show dust shells within 30" of the nucleus of
comet C/2002 C1 on the sunward side.  The shells display evidence
of two discrete jets.


COMET C/2002 F1 (UTSUNOMIYA)
     Visual m_1 estimates:  Mar. 21.14 UT, 9.5 (M. Reszelski,
Szamotuly, Poland, 0.41-m reflector); 22.20, 9.3 (J. J. Gonzalez,
Asturias, Spain, 11x80 binoculars); 23.15, 9.2 (R. J. Bouma,
Groningen, The Netherlands, 0.25-m reflector); 23.89, 9.5 (A.
Pearce, Noble Falls, W. Australia, 0.20-m reflector);
27.21, 8.7 (Gonzalez).

                      (C) Copyright 2002 CBAT
2002 March 28                  (7862)            Daniel W. E. Green

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