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IAUC 7842: 2002bk; SUNGRAZING COMETS; V838 Mon

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IAUC number

                                                  Circular No. 7842
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)

     W. M. Wood-Vasey, G. Aldering, and P. Nugent, Lawrence
Berkeley National Laboratory, report the discovery of an apparent
supernova (mag 18.5) on unfiltered CCD images taken with the Oschin
1.2-m Schmidt telescope at Palomar on Feb. 9.28 UT as part of a
joint collaboration with E. F. Helin, S. Pravdo, M. Hicks, and K.
Lawrence (Near-Earth Asteroid Tracking project, Jet Propulsion
Laboratory).  SN 2002bk is located at R.A. = 9h02m26s.67, Decl. =
-9 17'38".7 (equinox J2000.0), which is 3".0 west and 6".5 north of
the nucleus of its apparent host galaxy.  The new object was
confirmed at mag 19.1 on subsequent images taken with the same
telescope on Mar. 3.3, but images taken on Jan. 11.5 (limiting mag
19.5) showed nothing at this position.

     Further to IAUC 7841, D. Biesecker and D. Hammer report their
measurements for five more comets found on images taken with the C2
coronagraph onboard SOHO.  The 1998 objects were found by S. Hoenig,
and the 1999 ones by R. Kracht, on SOHO website images.  The
reduced astrometry and orbital elements by B. G. Marsden appear on
the MPECs cited below.  C/1999 K16 and C/1999 L9 belong to the
Meyer group (cf. IAUC 7832), and the others to the Kreutz group.

  Comet         1998 UT          R.A. (2000) Decl.       MPEC
  C/1998 H5     Apr. 20.173       1 57.8   +10 22       2002-D42
  C/1998 H6          20.255       1 57.6   +10 22       2002-D42

  Comet         1999 UT          R.A. (2000) Decl.       MPEC
  C/1999 K16    May  26.576       4 13.7   +22 26       2002-E05
  C/1999 K17         27.754       4 17.0   +19 39       2002-E05
  C/1999 L9     June  9.368       5 09.7   +24 20       2002-E05

     Visual magnitude estimates:  Feb. 11.510 UT, 7.3 (A. Pearce,
Nedlands, W. Australia); 15.753, 7.7 (A. Baransky, Kiev, Ukraine);
21.948, 8.0 (A. Kammerer, Ettlingen, Germany); 27.510, 8.7 (Pearce);
Mar. 1.979, 8.2 (R. Y. Shida, Sao Paulo, Brazil); 3.769, 8.0 (K.
Hornoch, Lelekovice, Czech Republic); 5.496, 7.2 (Pearce).

                      (C) Copyright 2002 CBAT
2002 March 5                   (7842)            Daniel W. E. Green

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