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IAUC 7560: 2001G; 2001H; C/1997 B3, C/1997 S3

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IAUC number 

                                                  Circular No. 7560
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 2001G IN MCG +08-17-43
     G. M. Hurst, Basingstoke, England, reports the discovery by M.
Armstrong (Rolvenden, Kent) of an apparent supernova (mag 16.1) on
a CCD frame taken on Jan. 8.051 UT with a 0.35-m Schmidt-Cassegrain
telescope in the course of the U.K. Nova/Supernova Patrol.  A
confirming image obtained on Jan. 12.904 shows that the new object
has brightened to mag about 15.2.  An average of measurements from
each frame yields the following position for SN 2001G:  R.A. =
9h09m33s.18, Decl. = +50o16'51".3 (equinox 2000.0), which is 2"
east and 4" south of the center of MCG +08-17-43.  Nothing is
present at this position to mag about 18 on Armstrong's patrol
images from 2000 Nov. 30 and Dec. 27, neither is anything present
on Palomar Sky Survey images obtained on 1991 Feb. 13 (red,
limiting mag 20.8), 1996 Mar. 12 (infrared, limiting mag 19.5), and
1997 Feb. 5 (blue, limiting mag 22.5).


SUPERNOVA 2001H IN MCG -01-10-19
     T. Puckett, Mountain Town, GA, provides his astrometry and
photometry of an apparent supernova (mag about 17.5) discovered by
B. Holmes, Charleston, IL, on an unfiltered CCD frame taken with a
0.40-m reflector on Jan. 10.10 UT:  R.A. = 3h40m43s.05, Decl. =
-6o24'59".1 (equinox 2000.0), which is 5".8 east and 2".9 south of
the center of MCG -01-10-19.  The new object was confirmed at mag
17.5 on an unfiltered CCD frame (limiting mag 20.5) taken by
Puckett with the Puckett Observatory 0.60-m reflector on Jan.
13.01.  SN 2001H does not appear on Palomar Sky Survey images
(limiting mag about 21.0) taken on 1987 Nov. 15 and 1982 Sept. 16.


COMETS C/1997 B3 AND C/1997 S3 (SOHO)
     Further to IAUC 7558, D. Hammer reports his measurements for
additional Kreutz sungrazing comets found by J. Danaher (Jan. comet
in C3 data) and X. Leprette (Sept. comet in C2 data) on SOHO
website images.  The reduced observations and orbital elements by
B. G. Marsden are given on the MPECs cited below.

  Comet         1997 UT           R.A. (2000) Decl.       MPEC
  C/1997 B3     Jan. 21.990      20 35.8   -21 27       2001-A35
  C/1997 S3     Sept.24.465      11 56.5   - 0 53       2001-A47

                      (C) Copyright 2001 CBAT
2001 January 13                (7560)            Daniel W. E. Green

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