Circular No. 4888 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 1989S IN IC 226 Jean Mueller reports her discovery of a supernova in IC 226 (UGC 1922; R.A. = 2h24.8, Decl. = +27 58', equinox 1950.0). The SN (estimated red magnitude 19) is 10" east and 30" south of the galaxy's center. The discovery was made on a plate taken Oct. 29 UT with the 1.2-m Oschin Telescope in the course of the second Palomar Sky Survey. A spectrum obtained by J. Gunn and J. Oke on Oct. 30 with the 5-m Hale reflector (+ 4-shooter + spectrograph) indicates the object is a type-I supernova, 20-25 days past maximum. The galaxy redshift is 0.037. SUPERNOVAE 1989P, 1989Q, 1989R M. Turatto, E. Cappellaro, and S. Benetti, Asiago Astrophysical Observatory, report the following photometry of some recent supernovae, obtained with the CCD camera at the 1.82-m telescope at Cima Ekar: SN 1989P in NGC 6636, Oct. 2.88 UT, B = 18.83; 2.85, V = 17.71; 2.86, R = 17.48; 26.88, B = 19.50; 26.85, V = 18.63; 26.87, R = 18.46; 27.88, V = 18.62; 27.89, R = 18.47. SN 1989Q in anonymous galaxy, Oct. 2.96, V = 18.68; 2.98, R = 18.61; 26.96, V = 20.05; 26.98, R = 19.49. SN 1989R in UGC 2912, Oct. 27.10, B = 18.96; 27.11, V = 17.86; 27.12, R = 17.33; 28.08, B = 18.97; 28.10, V = 17.92; 28.12, R = 17.37. A noisy CCD spectrum, secured on Oct. 4 with the Boller and Chivens spectrograph, and the rapid luminosity decline suggest SN 1989Q to be of type I. FO ANDROMEDAE M. Iida, Nagano, Japan, reports that this dwarf nova is undergoing a bright outburst, as indicated by the following visual magnitude estimates: Oct. 25.52 UT, [14.3; 29.48, 13.5; 30.52, 13.4. J. A. Mattei, AAVSO, recommends high-speed photometry to determine possible classification as an SU UMa-type variable. AM HERCULIS Visual magnitude estimates (cf. IAUC 4863) by M. Verdenet, Bourbon-Lancy, France: Sept. 25.79 UT, 12.9; 27.81, 13.3; 30.79, 13.6; Oct. 2.79, 13.7; 3.78, 13.0; 12.79, 13.7; 16.78, 14.4; 17.77, [14.4. 1989 October 31 (4888) Daniel W. E. Green
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