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IAUC 5703: 1993D; GRB 930131; 1992x

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                                                  Circular No. 5703
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

     R. H. McNaught, Bugaldie, N.S.W, reports his discovery of an
apparent supernova of mag about 18 on an R plate taken on Feb. 1.7
UT by M. J. Drinkwater with the U.K. Schmidt Telescope.  SN 1993D
is located at R.A. = 11h26m28s.90, Decl. = -22 12'34".0 (equinox
1950.0; uncertainty 0".5 in each coordinate), and it lies on the
inner edge of the ring of ESO 571-G3 (= MCG -4-27-11), being offset
10".7 west and 6".8 south from the galaxy's center.  A nearby star
of mag 17.5 has end figures 31s.40, 03".2.  No star appears in the
position of the supernova on the ESO or SERC R surveys.
     M. Della Valle and L. Pasquini, European Southern Observatory,
report:  "Inspection of a spectrogram (range 450-720 nm, resolution
about 2 nm) obtained on Feb. 3.3 UT with the ESO 1.5-m telescope (+
Boller & Chivens spectrograph) at La Silla shows this to be a type-
Ia supernova caught about 3 weeks after maximum."

GRB 930131
     T. L. Cline, S. Barthelmy, and D. Palmer, Goddard Space Flight
Center, NASA, on behalf of the Ulysses/Compton Interplanetary
Network team for the localization of gamma-ray burst sources (K.
Hurley, M. Sommer, M. Boer, and M. Niel for Ulysses; G. Fishman, C.
Kouveliotou, C. Meegan, W. Paciesas, and R. Wilson for CGRO/BATSE),
communicate:  "We report the source location of the event of Jan.
31.78972 UT.  The source annulus defined by the observations from
Ulysses and Compton Gamma Ray Observatory/BATSE has a radius of
22.253 deg, from a center at R.A. = 10h43m.2, Decl. = -14 18'
(equinox J2000.0).  This annulus intersects the CGRO/Comptel source
region (published on IAUC 5702), and provides a ring segment 1'
thick passing through R.A. = 12h13m52s, Decl. = -11 37'.3 and R.A.
= 12h09m08s, Decl. = -7 13'.0, reducing the IAUC 5702 source region
by nearly two orders of magnitude.  This is an exceptionally intense
burst with an extremely rapid onset, and could be a good
candidate for study at other wavelengths."

     Corrigendum. On IAUC 5691, line 2, for  17.26, 12.7  read
Dec. 17.26, 12.7

1993 February 3                (5703)            Daniel W. E. Green

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