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IAUC 7480: 2000dg; SUNGRAZING COMETS; 2000db

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IAUC number 

                                                  Circular No. 7480
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 2000dg IN MCG +1-1-29
     C. Yu and W. D. Li, University of California at Berkeley, on
behalf of the Lick Observatory Supernova Search (cf. IAUC 6627,
7126), report the discovery with the 0.8-m Katzman Automatic
Imaging Telescope (KAIT) of an apparent supernova (mag about 17.8)
on an unfiltered image taken on Aug. 22.5 UT, with confirmation
coming from an earlier image taken on Aug. 20.5 (mag about 18.5).
SN 2000dg is located at R.A. = 0h6m13s.81, Decl. = +8 53'17".5
(equinox 2000.0), which is 7".1 west and 0".8 south of the nucleus
of MCG +1-1-29.  A KAIT image of the same field taken on Aug. 11.4
showed nothing at the position of the new object (limiting mag
about 19.0).


SUNGRAZING COMETS
     Further to IAUC 7479, D. Hammer has provided measurements of
12 more Kreutz sungrazing comets detected by SOHO instruments
(discovery positions given below with citations to MPECs containing
the reduced measurements and orbits by B. G. Marsden).  The comets
were found in archival data by Hammer (C/1998 G8), M. Oates (the
remaining 1997 Apr. and 1998 Apr. objects), and X. Leprette (C/1997
M4, C/1997 N3).

   Comet         1997 UT          R.A. (2000) Decl.       MPEC
   C/1997 G3     Apr.  4.103      1 00.5      + 4 50      2000-Q06
   C/1997 G4           5.439      1 05.4      + 5 20      2000-Q06
   C/1997 G5           5.826      1 06.4      + 5 28      2000-Q06
   C/1997 G6          11.177      1 26.1      + 7 21      2000-Q06
   C/1997 M4     June 17.685      5 40.8      +21 47      2000-Q06
   C/1997 N3     July  4.670      6 49.2      +21 50      2000-Q06

   Comet         1998 UT          R.A. (2000) Decl.       MPEC
   C/1998 G5     Apr.  6.368      1 07.9      + 5 37      2000-Q07
   C/1998 G6           6.810      1 09.1      + 5 55      2000-Q07
   C/1998 G7           7.491      1 11.0      + 5 54      2000-Q07
   C/1998 G8           9.614      1 19.6      + 6 53      2000-Q08
   C/1998 H3          26.496      2 20.0      +12 21      2000-Q07
   C/1998 H4          27.941      2 25.4      +12 48      2000-Q07


SUPERNOVA 2000db IN NGC 3949
     CCD R magnitudes measured by K. Hornoch, Lelekovice, Czech
Rep.:  Aug. 11.830 UT, 13.7; 14.841, 13.6; 15.835, 13.7; 17.846,
13.7; 19.817, 13.7.

                      (C) Copyright 2000 CBAT
2000 August 23                 (7480)            Daniel W. E. Green

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