Circular No. 8048 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions) CBAT@CFA.HARVARD.EDU (science) URL http://cfa-www.harvard.edu/iau/cbat.html ISSN 0081-0304 Phone 617-495-7440/7244/7444 (for emergency use only) SUPERNOVAE 2003J, 2003K, 2003L, 2003M Discoveries of four apparent supernovae have been reported from unfiltered CCD images: SN 2003J in NGC 4157 by R. Kushida (cf. IAUC 7890; via S. Nakano) and by T. Puckett and J. Newton (cf. IAUC 8043); SN 2003K in IC 1129 by Puckett and A. Langoussis (0.50-m reflector); SN 2003L in NGC 3506 by T. Boles (cf. IAUC 8030) and by M. Schwartz, B. Swift, and W. Li of LOTOSS (cf. IAUC 7906); and SN 2003M in UGC 7224 also by Swift and Li. The tabulated data below for SNe 2003J and 2003L are from Puckett and Boles, respectively. SN 2003 UT R.A. (2000.0) Decl. Mag. Offset 2003J Jan. 11.32 12 10 57.72 +50 28 31.8 16.7 65".5 W, 32".1 S 2003K Jan. 11.32 15 32 01.91 +68 14 35.9 15.4 6".1 E, 10".1 S 2003L Jan. 12.15 11 03 12.33 +11 04 38.3 16.9 9".0 W, 1".5 N 2003M Jan. 13.5 12 13 21.00 +21 38 48.4 17.3: 38".2 E, 44".1 N Additional magnitude estimates, unfiltered CCD data except for the Sky Survey [B = Boles; K = Kushida; L = KAIT/LOTOSS; O = T. Kobayashi, Oizumi, Gunma, Japan, 0.41-m reflector (also via Nakano); P = Puckett; S = Palomar Sky Survey; and T = Tenagra II/LOTOSS]: SN 2003J, 1995 Apr. 4, [21.0: (S, P); 2001 June 24, [20.5: (P); 2002 May 25, [18: (K); 2003 Jan. 11.857 UT, 16.3 (K); 12.66, 16.3 (K). SN 2003K, 1991 May 17, [21.0: (S, P); 2002 Aug. 4, [20.2: (P). SN 2003L, 2002 Apr. 4, [19.0 (B); Nov. 4, [18.5 (B); Nov. 14.5, [19.5: (T); 2003 Jan. 6.700, 17.3 (O); 13.49, 16.0: (T); 13.55, 16.0: (L). SN 2003M, 2002 May 14.3, [19.0: (L); Dec. 23.5, 18.5: (L). Position end figures for SN 2003J from Kushida's image (measured by Y. Koshida): 57s.52, 32".7. Puckett adds that both SN 2003J and SN 2003K were confirmed on CCD frames taken on Jan. 12.15. LOTOSS position end figures for SN 2003L: 12s.32, 38".0. K. Ayani, Bisei Astronomical Observatory (BAO); and T. Hashimoto and H. Yamaoka, Kyushu University, write that preliminary reduction of a low-resolution spectrum (range 400-800 nm) of SN 2003J, obtained with the BAO 1.01-m telescope on Jan. 12.8 UT, shows prominent H-alpha emission (FWHM about 10000 km/s) with a P-Cyg profile, suggesting that it is a normal type-II supernova. Ayani and Yamaoka add that another low-resolution spectrum (obtained as above) of SN 2003K indicates that it is a type-Ia supernova several days before maximum light; adopting the NASA/IPAC Extragalactic Database recession velocity of 6540 km/s, the expansion velocity deduced from Si II (rest 635.5 nm) is about 12100 km/s. (C) Copyright 2003 CBAT 2003 January 15 (8048) Daniel W. E. Green