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IAUC 5682: 1992bo, 1992bp; 1975V, 1976Q, 1977I, 1978L, 1990ak

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IAUC number

                                                  Circular No. 5682
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

SUPERNOVAE 1992bo AND 1992bp
     J. Maza, University of Chile (UC); and M. Hamuy, Cerro Tololo
Interamerican Observatory, report the discovery of two apparent
supernovae found on 20-min unfiltered IIa-O plates taken by G.
Valladares with the CTIO Curtis Schmidt telescope.  SN 1992bo was
discovered by R. Antezana (UC), was at mpg about 17 on Dec. 20.06
UT, and is located 48" west and 55" south of the nucleus of the
spiral galaxy ESO 352-G57 (R.A. = 1h19m44s.1, Decl. = -34 27'29",
equinox 1950.0).  SN 1992bo was not visible (mpg > 19.5) on a IIa-O
plate taken on Nov. 30.1.  SN 1992bp was discovered by M.
Wischnjewsky (UC), was at mpg about 18 on Dec. 20.16, and is located
about 6" west and 1".5 south of the nucleus of a spiral galaxy
at R.A. = 3h34m22s.3, Decl. = -18 31'04".  Confirmation of both
supernovae was made by R. Aviles on CCD B, V, R, and I images
obtained on Dec. 22.11 and 22.19 with the CTIO 0.9-m telescope.

SUPERNOVAE 1975V, 1976Q, 1977I, 1978L, 1990ak
     The Central Bureau has assigned letter designations to the
following apparent supernovae found on the SERC J and R surveys by
R. H. McNaught during comparison with U.K. Schmidt plates taken
over the past two years.  SN 1978L was on an R survey, all others
on the J survey.  The 1990 J plate is not part of the originally
published survey.  In no cases were other images found on additional
UKST and ESO survey films.  The positions are accurate to about
0".4 in each coordinate (offsets measured from galaxies' centers).

Object    Date (UT)        R.A. (1950) Decl.     Mag.  Offsets (")
SN 1975V  1975 Aug. 29  20 13 13.99 -69 12 58.5  19   5.7 W, 0.1 N
SN 1976Q  1976 Nov. 14  21 16 37.72 -67 26 08.6  18.5 0.8 W, 5.2 S
SN 1977I  1977 Aug. 18   1 05 42.75 -27 54 03.8  18   1.5 E, 20.4 S
SN 1978L  1978 Aug. 25  20 42 52.78 -53 30 10.3  18   7.0 W, 3.3 S
SN 1990ak 1990 May 1    13 22 06.10 -32 09 49.4  18   0.8 W, 10.8 S

     SN 1975V is on the outer edge of what appears to be a spiral
galaxy and does not appear on the ESO B survey (1975 June 13).  SNe
1976Q and 1977I are within spiral arms; SN 1978L is on the outermost
edge of ESO 412-G6 = MCG -05-03-026; SN 1990ak is in an
elliptical galaxy.

1992 December 22               (5682)            Daniel W. E. Green

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