Central Bureau for Astronomical Telegrams
IAUC 3581: SN IN NGC 5090; 1981b
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Circular No. 3581
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM Telephone 617-864-5758
SUPERNOVA IN NGC 5090
J. Maza, Department of Astronomy, University of Chile, reports
his discovery of a supernova in NGC 5090 (R.A. = 13h18m.3, Decl. = -43o29',
equinox 1950.0), an interacting galaxy near Cen A. The supernova
is 15" east and 20" south of the nucleus of NGC 5090 and on Mar. 2
was of photographic magnitude 14.5.
COMET BUS (1981b)
Further precise positions have been reported as follows:
1981 UT R. A. (1950) Decl. m1 Observer
Mar. 4.17280 11 52 39.27 - 0 01 47.6 Shao
4.22568 11 52 37.30 - 0 01 32.0 Schwartz
5.70174 11 51 49.43 + 0 05 54.0 18 Seki
5.71979 11 51 48.70 + 0 05 58.7 "
C.-Y. Shao and G. Schwartz (Agassiz Station). 1.5-m reflector.
Comet near edge of plate. Measurer: Shao.
T. Seki (Geisei).
The following sets of orbital elements have been determined by
the undersigned. The ephemeris is from the parabolic elements, but
it is probable that the comet is a short-period one.
T = 1981 Aug. 16.380 1981 June 29.942 ET
Peri. = 74.774 34.916
Node = 179.756 181.457 1950.0
Incl. = 3.878 2.470
q = 1.50804 2.02848
e = 1.0 0.40236
1981 ET R. A. (1950) Decl. Delta r m1
Mar. 7 11 51.09 + 0 12.7
17 11 44.63 + 1 12.0 1.523 2.518 17.4
27 11 37.28 + 2 20.0
Apr. 6 11 29.98 + 3 29.7 1.375 2.326 16.9
16 11 23.87 + 4 32.8
26 11 19.96 + 5 22.0 1.320 2.141 16.4
May 6 11 19.00 + 5 52.0
16 11 21.44 + 5 59.3 1.322 1.966 16.0
1981 March 9 (3581) Brian G. Marsden
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