Central Bureau for Astronomical Telegrams
IAUC 3913: SN IN Anon GALAXY; 1983n; NEW IR SOURCE; 2CG 195+04 = 'GEMINGA'; V1343 Aql
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Circular No. 3913
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 ANONYMOUS GALAXY
J. Maza, Department of Astronomy, University of Chile, reports
the discovery by L. E. Gonzalez at Cerro El Roble of a possible
supernova 1" east and 6" south of the nucleus of an anonymous
spiral galaxy at R.A. = 5h48m0, Decl. = -24deg02' (equinox 1950.0).
The object was recorded on Jan. 3 at mpg = 18.0.
PERIODIC COMET CROMMELIN (1983n)
Further precise positions will be published on the MPCs.
Orbital computations by D. K. Yeomans, Jet Propulsion Laboratory,
show that this comet has a very slight secular acceleration (A2 =
-0.0004 from observations 1873-1984, A2 = -0.0008 from observations
1928-1984); for current ephemeris purposes the orbital elements
on IAUC 3886 are quite adequate. Further visual magnitude
estimates: Jan. 25.98 UT, 10.5 (J. Bortle, Stormville, NY, 0.32-m
reflector); 29.15, 9.9 (C. S. Morris, Frazer Park, CA, 0.20-m
reflector); 30.07, 9.8 (R. Keen, Boulder, CO, 0.32-m reflector).
NEW INFRARED SOURCE
E. R. Crane, Tucson, reports that his search of the near-
infrared photographic sky survey (NIPSS) has revealed an extremely
red star at R.A. = 4h52m04s, Decl. = +44deg27'6 (equinox 1950.0), that
may be identical with the 2.2-micron infrared source reported by Ashok
et al. (IAUC 3906). At an estimated V ~ 15.5, V-I ~ 6, it is by far
the reddest star in the immediate vicinity. The object appears
completely stellar, and examination of three sets of photographs
shows no evidence for large-scale brightness variations.
2CG 195+04 = 'GEMINGA'
With reference to IAUC 3907, we point out that C. Vanderriest
told us that the position originally reported was possibly
incorrect--but not until IAUC 3892 had been printed. He adds that
the upper limit on parallax and proper motion is still valid.
V1343 AQUILAE
Visual magnitude estimates by M. Verdenet, Bourbon-Lancy,
France: 1983 Sept. 24.8 UT, 15.0; 27.8, 14.4; 30.8, 14.6; Oct.
3.8, 14.2; 6.8, 15.2; 7.8, 15.6; 8.8, 15.2.
1984 February 1 (3913) Brian G. Marsden
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