Central Bureau for Astronomical Telegrams
IAUC 4175: 1986A; 1982i
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Circular No. 4175
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 617-495-7244/7440/7444
SUPERNOVA 1986A IN NGC 3367
L. Cameron and B. Leibundgut report their independent discovery
of this object (cf. IAUC 4173) on a plate taken Feb. 4.1 UT
with the Swope telescope at Las Campanas Observatory; they note the
supernova at B about 14 and offset 24" east and 1" south from the
galaxy's nucleus. Following requests from the Bureau for spectroscopic
confirmation, R. Kirshner, Center for Astrophysics, relayed that
J. Huchra observed the supernova on Feb. 5 with the 1.5-m reflector
at the Whipple Observatory and found the sharp absorption of Si II
at 615.0 nm, indicating the object to be a type-I supernova near
maximum light. J. C. Wheeler, University of Texas at Austin, also
responding to our request, relayed similar information from observers
at McDonald Observatory who observed on the following night.
Kirshner notes that photometry is very important now while the
supernova is near maximum brightness.
PERIODIC COMET HALLEY (1982i)
K. Krisciunas, U.K. Infrared Telescope, reports photoelectric
measurements of P/Halley, obtained with a 0.15-m f/6 reflector at
Mauna Kea using an elliptical diaphragm 3'49 x 2'19 oriented east-
west: 1985 Nov. 9.508 UT, V = 8.85; 10.536, V = 8.86, B = 9.51;
11.519, V = 8.57; 18.297, V = 8.33; Dec. 13.285, V = 7.09, B =
7.93; 1986 Jan. 11.232, V = 5.67. Estimated errors < 0.03 in V, <
0.05 in B; comparison star mu Tau, except 53 Psc on Dec. 13 and B
Aqr on Jan. 11. Full coma maps yield the following integrated V
magnitudes: 1985 Nov. 10.569, 7.48; Dec. 13.331, 5.46.
J. Crovisier, J. P. Maillard, T. Encrenaz, and M. Combes telex
that further processing of the high-resolution infrared spectrum
obtained at the Canada-France-Hawaii Telescope on 1985 Dec.
23 (IAUC 4159) reveals an unidentified emission feature at 2.44 microns.
This feature was also present in the infrared spectrum of comet
West 1976 VI (Johnson et al. 1983, Ap.J. 270, 769) and might be
attributable to the nu1+nu3-2nu2 band of H2O.
K. Takagishi, Miyazaki University; and M. Eiraku, K. Tomita,
and M. Matsuoka, Institute of Space and Astronautical Science,
Tokyo, report that they continued to monitor (cf. IAUC 4154) the
central condensation daily during Jan. 6.4-16.4 (except Jan. 15).
The condensation was generally starlike and nearly circular, but
on Jan. 8 another jetlike feature at p.a. ~ 140 was detected.
1986 February 7 (4175) Daniel W. E. Green
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