Central Bureau for Astronomical Telegrams
IAUC 5261: 1991Z; SVS 13; 1991g
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Circular No. 5261
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 or GREEN@CFA.BITNET MARSDEN or GREEN@CFAPS2.SPAN
SUPERNOVA 1991Z IN ANONYMOUS GALAXY
R. H. McNaught, Anglo-Australian Observatory, reports his
discovery, on a U.K. Schmidt Telescope R plate taken by S. M. Hughes on
May 6.5 UT, of an apparent supernova (mag about 20) located at R.A.
= 10h52m08s.11, Decl. = -3 56'28".7 (equinox 1950.0), which is 10".1
east and 4".5 north of the galaxy nucleus. No image appears at this
position on J and R survey films. A nearby star of mag about 16.5
is located at R.A. = 10h52m15s.85, Decl. = -3 55'28".6.
SVS 13
N. Mauron and E. Thouvenot, Toulouse Observatory, communicate:
"We have discovered an optical outburst of the young object SVS 13,
located at R.A. = 3h25m58s.15, Decl. = +31 05'45".2 (equinox 1950.0),
near the chain HH 7-11 in the Perseus complex. CCD frames obtained
on 1990 Dec. 19 with the Pic-du-Midi 2-m telescope gave magnitudes R
= 18.0, I = 15.4. The object was similarly bright on a white-light
CCD frame obtained at the 0.60-m amateur telescope on 1990 Sept. 23.
Comparison with previous images taken near 1984 (Strom et al. 1986,
Ap.J. Suppl. 62, 39) indicates a brightening of about 3.4 mag in I
within 6 years or less. The object may be a new rare FU Ori
variable. Interested individuals may contact us via e-mail at
MAURON@FROMP51.EARN."
COMET McNAUGHT-RUSSELL (1991g)
Ephemeris from orbital elements on MPC 17940:
1991 ET R.A. (1950) Decl. Delta r m1
May 4 10 09.54 - 3 21.0 4.549 5.021 16.8
14 10 07.91 - 1 24.6
24 10 07.64 + 0 16.6 4.934 5.071 17.0
June 3 10 08.58 + 1 43.2
13 10 10.58 + 2 56.5 5.334 5.125 17.2
23 10 13.48 + 3 57.9
July 3 10 17.13 + 4 49.0 5.706 5.183 17.4
13 10 21.39 + 5 31.2
23 10 26.14 + 6 06.1 6.020 5.245 17.6
1991 May 7 (5261) Daniel W. E. Green
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