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IAUC 3971: SN IN NGC 6850; N Vul 1984; SS Cyg; 1984j

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IAUC number 

                                                  Circular No. 3971
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM    Telephone 617-495-7244/7440/7444


SUPERNOVA IN NGC 6850
     J. Maza, Department of Astronomy, University of Chile, telexes
that M. Wischnjewsky has found a possible supernova of  mpg =
16.0 located 3" east and 35" north of the nucleus of NGC 6850 (R.A. =
19h59m6, Decl. = -54deg59', equinox 1950.0) on a plate taken by L. E.
Gonzalez at Cerro El Roble on Aug. 2.  The object was confirmed by
M. M. Phillips and A. Gomez on a plate taken at Cerro Tololo
Interamerican Observatory on Aug. 9.1 UT.


NOVA VULPECULAE 1984
     Further selected visual magnitude estimates: Aug. 6.52 UT,
7.1 (R. H. McNaught, Siding Spring Observatory); 6.83, 7.5 (E.
Schweitzer, Strasbourg, France); 7.08, 8.0 (J. Bortle, Stormville,
NY); 7.17, 8.1 (P. Maley, Houston, TX); 7.45, 8.0 (McNaught);
7.65, 8.3 (McNaught); 7.93, 8.2 (G. M. Hurst, Wellingborough,
England); 8.13, 8.3 (Maley); 8.91, 8.4 (Hurst); 9.13, 8.4 (Maley).


SS CYGNI
     J. Mattei, AAVSO, informs us that although this star reached
maximum on June 26, close to the prediction on IAUC 3945, it
flared again in late July, considerably earlier than the Aug. 25
prediction, and is still bright.  Selected visual magnitude estimates:
July 26.13 UT, 11.2 (R. Young, Harrisburg, PA); 27.29, 10.8
(M. Bernstrom, Eden Prairie, MN); 28.10, 8.8 (D. Weier, Madison,
WI); 29.20, 8.6 (P. Sventek, Houston, TX); 30.90, 8.3 (K. Medway,
Southampton, Eng.); Aug. 1.10, 8.3 (Young); 2.98, 8.0 (Medway);
4.18, 8.2 (S. Knight, Waterford, ME); 5.28, 8.2 (Knight); 7.28,
8.5 (Sventek); 9.30, 8.7 (A. P. Abbott, Leduc, AB).


PERIODIC COMET TAKAMIZAWA (1984j)
     A direct communication from T. Seki gives m1 = 17, not 6.5,
on July 26 (cf. IAUC 3970).  Total visual magnitude estimates:
Aug. 3.23 UT, 8.9 (C. E. Spratt, Victoria, BC, 0.20-m reflector);
5.25, 9.0 (Spratt); 6.78, 9.4 (R. H. McNaught, Siding
Spring Observatory, 0.30-m reflector); 7.52, 10.4 (McNaught).


1984 August 10                 (3971)              Brian G. Marsden

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