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IAUC 5207: 1991M; GRS 1217+066; 1990N; 1990c

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IAUC number

                                                  Circular No. 5207
Central Bureau for Astronomical Telegrams
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505

     C. Pennypacker, S. Perlmutter, S. Carlson, N. Hamilton, H.
Marvin, R. Muller, and C. Smith communicate:  "The Berkeley Automated
Supernova Search reports the discovery of a supernova located 60"
north and 36" east of the core of galaxy IC 1151 (R.A. = 15h56m16s.5,
Decl. = +17 35'03", equinox 1950.0) in two separate images observed
Mar. 12 UT.  There was no supernova visible on an image taken Feb.
24 to a limit (90-percent confidence level) of mag 17.5."
     B. Schmidt and B. Leibundgut, Center for Astrophysics, report:
"A spectrogram (range 400-900 nm) obtained on Mar. 13.35 UT with the
Multiple Mirror Telescope shows the object to be a type-Ia supernova
close to maximum light.  SN 1991M was at mag about 15 and is located
at R.A. = 15h56m20s.5, Decl. = +17 35'25" (equinox 1950.0)."

GRS 1217+066
     N. Lund, S. Brandt, and A. Castro-Tirado, on behalf of the
WATCH/GRANAT team (Danish Space Research Institute, Lyngby; and
Space Research Institute, Moscow), report:  "A peculiar cosmic
gamma-ray burst, GRS 1217+066 (R.A. = 12h17m, Decl. = +6.6, equinox
1950.0, error radius 0.3 deg) was recorded by the WATCH all-sky x-
ray monitor on Mar. 10.54 UT.  The duration of the event was about
40 s.  Optical and radio follow up are encouraged."

     C. Pollas, Observatoire de la Cote d'Azur, reports detection of
this object at V about 18.5 on a Tech Pan exposure taken Mar. 13.14

COMET LEVY (1990c)
     Total visual magnitude estimates (cf. IAUC 5197):  Feb. 21.05
UT, 8.4 (V. F. de Assis Neto, Sao Francisco de Oliveira, Brazil,
10x70 binoculars); Mar. 4.18, 8.0 (A. Hale, Las Cruces, NM, 10x50
binoculars); 9.23, 8.4 (C. S. Morris, Pine Mountain Club, CA, 20x80
binoculars); 13.08, 8.2 (J. E. Bortle, Stormville, NY, 10x50
binoculars). Corrigendum to IAUC 5172: last line, for  (Morris);  read

1991 March 13                  (5207)             Daniel W. E. Green

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