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Circular No. 8798 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 2007G, 2007H, 2007I, 2007J, 2007K, 2007L, 2007M Seven apparent supernovae have been discovered on unfiltered CCD frames: 2007G by C. C. Jin, Y. Cao, F.-Y. Bian, Y.-Q. Lou, X. F. Wang, Y. Wu, and Y. Yang (THCA Supernova Survey/TNT; cf. IAUC 8648); 2007J independently by J. Newton and T. Puckett (cf. IAUC 8794; 0.40-m reflector at Portal, AZ) and by N. Lee and W. Li (LOSS/KAIT; cf. IAUC 8794; source of tabulated data below); and the rest via LOSS (N. Joubert, N. Lee, D. R. Madison, R. Mostardi, and W. Li). SN 2007 UT R.A. (2000.0) Decl. Mag. Offset 2007G Jan. 9.48 0 08 09.81 +27 00 11.4 17.5 0".5 W, 3".2 S 2007H Jan. 10.36 8 35 01.98 - 8 20 15.3 17.7 3".1 W, 2".5 S 2007I Jan. 14.44 11 59 13.15 - 1 36 18.9 18.0 0".8 E, 0".8 S 2007J Jan. 15.21 2 18 51.70 +33 43 43.3 18.2 5".4 E, 15".3 N 2007K Jan. 16.40 9 14 26.21 +36 06 52.4 17.2 0".3 E, 8".1 N 2007L Jan. 18.10 0 43 52.20 + 0 47 35.6 16.8 5".1 E, 31".3 S 2007M Jan. 14.47 12 04 34.17 +20 11 30.2 19.2 23" E, 48" S Additional magnitudes for 2007G in UGC 68: 2006 Oct. 3.55 UT, [18.5 (TNT); Nov. 16.16, [19.0 (KAIT); Dec. 7.15, 17.3 (KAIT); 12.51, 17.5 (TNT); 21.14, 17.3 (KAIT); 2007 Jan. 1.16, 17.4 (KAIT). The tabulated offset for 2007G is with respect to the center of the eastern component in the double-nucleus galaxy UGC 68 (PGC 167). W. Li provides position end figures 09s.78, 11".2 for 2007G (and offset 0".5 east, 1".5 south of the western component of the nucleus of UGC 68). Additional magnitudes for 2007H: 2006 Dec. 19.39, [19.0; 2007 Jan. 14.37, 17.9. Additional magnitudes for 2007I: 2006 Dec. 7.46, [19.2; 2007 Jan. 15.49, 17.6. Additional magnitudes for 2007J in UGC 1778: 2006 Dec. 6.22, [19.5 (KAIT); 18, [19.9 (Puckett); 2007 Jan. 16.14, 17.3 (Puckett); 17.16, 17.3 (Puckett). Additional magnitudes for 2007K in MCG +06-20-50: 2006 Dec. 3.39, [19.5; 2007 Jan. 18.32, 17.1. Additional KAIT magnitudes for 2007L in UGC 466: Jan. 8.11, [18.3; 19.10, 16.8. Additional magnitudes for 2007M in NGC 4076: 2006 May 12.19, [19.5; Dec. 24.51, 18.6; 2007 Jan. 15.51, 19.3. Spectroscopic supernova identifications (and published references): SNe 2007G and 2007L, type-II (CBET 815); 2007H, type-Ia (discovered about a week past maximum; cf. CBET 811); 2007I, type-Ic (discovered about 2 weeks past maximum; cf. CBET 808); 2007J, type-Ia (discovered approximately 2 months past maximum; cf. CBET 817); 2007K, type-IIn (CBET 813); 2007M, type-Ia (roughly 2 months past maximum on Jan. 22; cf. CBET 816). (C) Copyright 2007 CBAT 2007 January 23 (8798) Daniel W. E. Green
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