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IAUC 7477: 2000dd; NOVAE IN M31; C/1999 S4; 2P

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                                                  Circular No. 7477
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)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7244/7440/7444 (for emergency use only)


SUPERNOVA 2000dd IN ANONYMOUS GALAXY
     A. B. Aazami and W. D. Li, University of California at
Berkeley, on behalf of the Lick Observatory Supernova Search (cf.
IAUC 6627, 7126), report the discovery of an apparent supernova
with the 0.8-m Katzman Automatic Imaging Telescope (KAIT) on Aug.
10.3 (mag about 17.5) and 11.3 UT (mag about 17.4).  An earlier
image taken on Aug. 3.3 also showed the new object at mag about
18.0.  SN 2000dd is located at R.A. = 20h35m00s.10, Decl. =
-23o05'55".2 (equinox 2000.0), which is 1".6 north of the nucleus
of the faint host galaxy, which in turn is 56" east and 22" north
of MCG -4-48-19.   A KAIT image of the same field taken on July
27.3 showed nothing at the position of SN 2000dd (limiting mag
about 19.0).


NOVAE IN M31
     Li also reports the KAIT of two apparent novae in M31 = NGC
224.  The first nova, which was discovered by M. Papenkova on an
image taken on July 27.5 UT, is located at R.A. = 0h42m44s.0,
Decl. = +41o17'57" (equinox 2000.0), which is about 4" west and
108" north of the nucleus of M31 (the semi-accurate position of the
nova is derived from three GSC stars in the field); available
magnitudes:  July 19.5, > 19.5; 25.5, 19.1; 27.5, 16.9; 28.5, 17.1;
Aug. 11.5, 19.0.  The second nova, which was dicovered by A. B.
Aazami on an image taken on Aug. 10.5, is located at R.A. =
0h42m37s.6, Decl. = +41o17'37" (equinox 2000.0), which is about 75"
west and 89" north of the nucleus of M31; available magnitudes:
Aug 6.5, > 19.0; 8.5, 18.6; 10.5, 17.1; 11.5, 17.3.  A finding
chart of the two novae can be found at
http://astron.berkeley.edu/~bait/2000/n31_2.html.


COMET C/1999 S4 (LINEAR)
     The production rates given on IAUC 7475 were for observations
obtained on July 29.2 UT.


COMET 2P/ENCKE
     Visual m_1 estimates:  July 29.99 UT, 11.4 (S. E. Shurpakov,
Baran, Belarus, 0.35-m reflector); Aug. 1.45, 11.1 (A. Hale,
Cloudcroft, NM, 0.41-m reflector); 5.98, 10.8 (V. S. Nevski,
Vitebsk, Belarus, 0.30-m reflector); 10.05, 9.7: (M. Reszelski,
Szamotuly, Poland, 20x60 binoculars).

                      (C) Copyright 2000 CBAT
2000 August 12                 (7477)            Daniel W. E. Green

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