Central Bureau for Astronomical Telegrams
IAUC 4580: 1988K; N LMC; 1987g; 1987b1
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Circular No. 4580
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
MARSDEN or GREEN@CFA.BITNET MARSDEN or GREEN@CFAPS2.SPAN
SUPERNOVA 1988K IN UGC 08179
Jean Mueller and Alain Maury report their discovery of a
supernova in UGC 08179 (= MCG +05-31-123; R.A. = 13h02m.9, Decl. =
+32D16M, equinox 1950.0). The object was estimated at mag 18 on a
Kodak IIIa-J plate taken on Apr. 12.29 UT with the Oschin 1.2-m
Schmidt telescope in the course of Palomar Sky Survey II. The object
is located 2".6 east and 34".5 north of the galaxy's center. A
spectrum obtained with the four-shooter spectrograph on the Hale 5-m
telescope on Apr. 14.23 UT by M. Schmidt, J. Gunn, D. Schneider and R.
Lucinio shows the object to be a very peculiar type I supernova, with
strong narrow emission at 558 nm in the rest frame and an abnormally
strong 610-nm absorption trough.
NOVA IN THE LARGE MAGELLANIC CLOUD
P. M. Kilmartin, Mount John University Observatory, communicates
the following photometric observations, obtained with the Mount John
0.61-m reflector: Apr. 3.42 UT, V = 12.55, U-B = -0.36, B-V = +0.06,
V-R = +0.49; 4.40, 12.53, -0.39, +0.09, +0.50; 7.43, 12.31, -0.40,
+0.11, +0.42; 11.46, 12.65, -0.43, +0.82, +0.48. The comparison star
was HD 37027.
PERIODIC COMET TEMPEL 2 (1987g)
R. Decher and C. M. Telesco, NASA/Marshall Space Flight Center;
W. F. Golisch, NASA/Infrared Telescope Facility; and H. Campins,
Planetary Science Institute, report the apparently first detection at
10.8 micrometers of P/Tempel 2 on Apr. 8.5 UT using the MSFC Infrared
Array Camera at the IRTF. The comet was detected in one array pixel
(4".3 x 4".3, FWHM). The flux density was 161 +/- 18 mJy, or [10.8
micrometers] = 5.87 +/- 0.11. Uncertainties do not include the +/- 10
percent in calibration.
COMET McNAUGHT (1987b1)
Total visual magnitudes: Mar. 12.02 UT, 9.7 (J. E.
Bortle, Stormville, NY, 0.32-m reflector); 14.44, 8.9 (E. A. Jacobson,
Evansville, MN, 20 x 80 binoculars); 18.81, 10.1 (M. V. Zanotta,
Milan, Italy, 0.30-m reflector); 20.03, 10.2 (Bortle); 26.50, 9.6 (A.
Hale, Las Cruces, NM, 0.41-m reflector); Apr. 6.14, 9.9 (Jacobson,
0.25-m reflector); 7.18, 10.7 (Hale; very diffuse).
1988 April 14 (4580) Brian G. Marsden
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