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IAUC 5812: 1993R; 1993S, 1993T; 1993J

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                                                  Circular No. 5812
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
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
MARSDEN@CFA or GREEN@CFA (.SPAN, .BITNET or .HARVARD.EDU)


SUPERNOVA 1993R IN NGC 7742
     R. R. Treffers, B. Leibundgut, and A. V. Filippenko, University
of California at Berkeley; and M. W. Richmond, Princeton University,
report the discovery of a probable supernova in NGC 7742
(R.A. = 23h41m43s, Decl. = +10o29'.3, equinox 1950.0).  The object
was found during the Leuschner Observatory Supernova Search (LOSS),
which uses an automated 0.76-m telescope equipped with the Lawrence
Berkeley Laboratory CCD camera.  SN 1993R was detected in an image
obtained on June 2 UT and confirmed on June 3.  Inspection of earlier
LOSS observations of NGC 7742 reveals the presence of this object
since Feb. 15, before it disappeared behind the sun.  It was
not present in an image obtained on Feb. 2.  The supernova is located
about 8" east and 5" north of the galaxy nucleus and is
estimated to be of magnitude R about 17.


SUPERNOVAE 1993S AND 1993T IN ANONYMOUS GALAXIES
     J. Maza, University of Chile; and M. Hamuy, Cerro Tololo
Interamerican Observatory, report the discovery of two apparent
supernovae by R. Antezana (University of Chile) on 20-min unfiltered
IIa-O plates taken by G. Valladares with the CTIO Curtis Schmidt
telescope.  SN 1993S (mpg about 17.5 on May 26.36 UT) is located
7".5 west and 6".5 north of the nucleus of a spiral galaxy at R.A.
= 22h49m33s.4, Decl. = -40o34'40" (equinox 1950.0).  Confirmation
of SN 1993S was made by R. Aviles on CCD B, V, and I images
obtained on June 5.36 with the CTIO 0.9-m telescope.  SN 1993T (mpg
about 18 on May 26.38 UT) is located about 18".5 west and 13".5
north of the nucleus of a galaxy at R.A. = 23h08m07s.7, Decl. =
-45o15'21" (equinox 1950.0).  Confirmation of SN 1993T was also
made by Aviles from a CCD V image obtained on June 5.38.


SUPERNOVA 1993J IN NGC 3031
     Further photoelectric photometry by H. Mikuz, B. Dintinjana,
and T. Zwitter, Ljubljana, Slovenia (cf. IAUC 5796):  May 31.93 UT,
B = 13.45 +/- 0.03, V = 12.53 +/- 0.01, R = 11.96 +/- 0.02, I =
11.65 +/- 0.02; June 1.88, 14.13 +/- 0.02, 12.62 +/- 0.02, 12.03
+/- 0.02, 11.75 +/- 0.02; 5.90, 13.69 +/- 0.06, 12.67 +/- 0.01,
12.10 +/- 0.04, 11.70 +/- 0.04.


1993 June 10                   (5812)            Daniel W. E. Green

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