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IAUC 3827: 1983e; SN IN NGC 4699; BL Tel; 1983f; 1982j

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                                                  Circular No. 3827
Central Bureau for Astronomical Telegrams
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM     Telephone 617-864-5758

     Observations by E. Barker with the McDonald Observatory's
1.7-m reflector on June 9 showed the comet to have a very weak,
but essentially stellar condensation of mag 18-19.  Emissions of
CN, C2 and C3 were detected, but there was little or no continuum.

     J. Maza, University of Chile, telexes that M. Wischnjewsky
has discovered a supernova in NGC 4699 on plates taken by L. E.
Gonzalez at Cerro El Roble.  The object brightened from  mpg 17 on
June 6.12 UT to mpg 14 on June 10.12.  The supernova, 148" east
and 131" north of the galaxy's nucleus, is located at the position
R.A. = 12h46m36s41, Decl. = -8deg21'21".9 (equinox 1950.0).

     I. Ferrin, Universidad de Los Andes, Merida, Venezuela,
writes: "According to the ephemeris by Gaposhkin (1970, A.J.
75, 641), the remarkable supergiant eclipsing binary BL Tel (R.A. =
19h02m7, Decl. = -51deg30', equinox 1950.0) is about to enter eclipse.
The nominal dates (eclipse begins Aug. 2, ends Oct. 19) are uncertain
because of a possible period change in 1950.  At maximum V =
7.0.  At mid-eclipse (nominally Sept. 10) V = 9.1, but minimum
brightness in the past has varied from V = 8.47 to V = 9.29."

COMET IRAS (1983f)
     J. Gibson provides the following precise measurement for the
third observation reported on IAUC 3818:

         1983 UT             R.A.    (1950.0)     Decl.

         May  31.17714       9 16 45.91      - 8 06 30.6

     Further total visual magnitude estimates: May 12.14, 9.8 (J.
Bortle, Stormville, NY, 0.32-m reflector; tail in p.a. 220);
14.98, 10.3 (J. D. Shanklin, Cambridge, Eng., 20 x 80 binoculars);
17.87, 9.9 (J.-C. Merlin, Le Creusot, France, 0.26-m reflector);
29.86, 9.6 (Merlin); June 4.94, 9.3 (Merlin); 10.93, 9.4 (Merlin).

1983 June 13                   (3827)              Brian G. Marsden

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