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IAUC 7986: 2002gd; C/2002 S5, C/2002 S6,, C/2002 S7

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                                                  Circular No. 7986
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 2002gd IN NGC 7537
     Independent CCD discoveries of an apparent supernova in NGC
7537 have been received from A. Klotz, Guitalens, France, with a
0.20-m reflector (limiting mag about 18.0) and from T. Puckett and
A. Langoussis, Mountain Town, GA, with the Puckett Observatory
0.60-m automated supernova patrol telescope.  Klotz provided the
following approximate position for the new object:  R.A. =
23h14m36s.5, Decl. = +4o30'08" (equinox 2000.0), which is 34" east
and 8" north of the nucleus of NGC 7537.  Puckett provides the
following precise-position end figures:  36s.98, 05".7, which is
36".8 east and 10".8 north of the center of NGC 7537.  W. M.
Wood-Vasey, G. Aldering, and P. Nugent, Lawrence Berkeley National
Laboratory, report the following precise-position end figures from
a NEAT image taken at Palomar:  37s.01, 06".1.  Unfiltered CCD
magnitude estimates (P = Puckett; W = Wood-Vasey; K = Klotz):  1951
Aug. 10 UT, [20.0: (Palomar Sky Survey, via Puckett); 2001 Sept. 6,
[19.0 (W; S/N = 7); 2002 July 16, [20.5: (P); Aug. 13, [20.5: (P);
Aug. 22, [20.5 (W; S/N = 7); Oct. 5.31, 18.9 (W); 5.33, 19.1 (W);
5.92, about 16.7 (K); 6.22, 17.5 (P); 6.28, 18.3 (W); 6.31, 18.0
(W); 6.33, 18.1 (W); 6.83 about 16.7 (K).  Wood-Vasey notes that
their preliminary magnitudes were obtained after subtraction of the
galaxy light.  Klotz adds that SN 2002gd is not present on numerous
images taken by himself before during from 2000 Aug. 23 to 2002
Aug. 17.  Puckett adds that SN 2002gd was also confirmed on CCD
frames taken by R. Stephens, Rancho Cucamonga, CA (0.35-m reflector).


COMETS C/2002 S5, C/2002 S6, AND C/2002 S7 (SOHO)
     Further to IAUC 7984, D. Hammer reports two more comets found
on SOHO website C3 images by M. Oates (C/2002 S6, a Kreutz
sungrazer) and R. Matson (C/2002 S7, a member of the Kracht group,
also visible in the C2 coronagraph).  The reduced astrometry and
orbital elements by B. G. Marsden appear on MPEC 2002-T25, where R.
Kracht was incorrectly inferred as having found C/2002 S7.

    Comet         2002 UT           R.A. (2000) Decl.
    C/2002 S6     Sept. 20.488     11 32.9   + 0 35
    C/2002 S7           20.721     11 39.9   + 2 21

     Corrigendum.  On IAUC 7984, last line (C/2002 S5),  FOR
[Sept.] 17.646  READ  19.646

                      (C) Copyright 2002 CBAT
2002 October 7                 (7986)            Daniel W. E. Green

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