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IAUC 6767: 1997 V1; EF Peg

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                                                 Circular No. 6767
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
Phone 617-495-7244/7440/7444 (for emergency use only)


COMET 1997 V1
     Jeff Larsen reports his discovery of a comet with the 0.91-m
Spacewatch telescope at Kitt Peak.  The following observations have
been reported:

     1997 UT             R.A. (2000) Decl.        m1    Observer
     Nov.  3.22743    0 14 11.99   +12 28 59.4          Larsen
           3.24864    0 14 11.70   +12 28 51.3   16.6     "
           3.27007    0 14 11.42   +12 28 43.4   16.6     "
           3.29130    0 14 11.11   +12 28 35.2            "
           3.29561    0 14 11.05   +12 28 33.5   16.6     "
           3.29981    0 14 10.99   +12 28 32.0   16.6     "
           3.36761    0 14 10.09   +12 28 06.0   16.6     "
           3.37237    0 14 10.03   +12 28 04.4   16.7     "
           3.37636    0 14 09.97   +12 28 02.8   16.7     "
           3.96399    0 14 03.10   +12 24 22.5   16.0   Tichy
           3.96612    0 14 03.04   +12 24 21.3            "
           3.96756    0 14 03.02   +12 24 20.6            "
           3.97039    0 14 02.98   +12 24 20.2            "

J. Larsen (Kitt Peak).  Measurer J. V. Scotti.  Coma diameter 14";
  tail extends 0'.89 in p.a. 258 deg; m_2 = 19.2-19.7.
M. Tichy and Z. Moravec (Klet).  0.57-m f/5.2 reflector + CCD.
  Measurer Tichy.  Coma diameter 11"; no tail.  Not very good seeing.


EF PEGASI
     J. A. Mattei, AAVSO, reports that T. Burrows (Novato, CA) and
P. Schmeer (Bischmisheim, Germany) independently detected a
superoutburst of this SU UMa-type dwarf nova, the first since early
1995 (IAUC 6125), when the star reached maximum at mag 10.7 by Jan.
12 and remained bright for three weeks.  Visual magnitude estimates:
Oct. 31.842 UT, [14.4 (E. Broens, Mol, Belgium); Nov. 1.93, [13.0
(P. Schmeer, Bischmisheim, Germany); 2.187, 11.4 (T. Burrows,
Novato, CA); 2.713, 11.1 (Schmeer); 2.835, 10.7 (Schmeer); 3.077,
11.2 (G. Hanson, Cave Creek, AZ); 3.160, 10.9 (R. Royer, Lakewood,
CA); 3.208, 11.3 (Hanson); 3.779, 11.2 (Broens); 3.795, 11.3 (E.
Muyllaert, Oostende, Belgium).  A star of mag 12.4 is located only
about 5" from EF Peg, at p.a. 305 deg.

                      (C) Copyright 1997 CBAT
1997 November 3                (6767)            Daniel W. E. Green

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