Circular No. 8616

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) BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science) URL http://cfa-www.harvard.edu/iau/cbat.html Phone 617-495-7244/7440/7444 (for emergency use only)

SUPERNOVAE 2005gm, 2005gn, 2005gz, 2005ha, 2005hb

Five apparent supernovae have been discovered on unfiltered
CCD frames:  2005gm by P. Luckas, O. Trondal, and M. Schwartz (cf.
IAUC 8575) with the 0.35-m telescope at Perth, and the rest by R. R.
Prasad, K. Shimasaki, E. Lee, and W. Li (LOSS/KAIT; cf. IAUC 8611).

SN      2005 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2005gm  Oct.  9.86   3 42 39.30  - 6 23 04.0  18.0  12".5 W, 8".9 S
2005gn  Oct. 12.52   5 48 49.07  -24 22 45.5  18.4   7".8 E, 0".6 S
2005gz  Oct. 11.18  21 05 20.69  - 7 50 47.5  18.3           2".9 S
2005ha  Oct. 13.52   6 21 49.04  + 0 21 55.6  18.3  21".2 W, 2".2 S
2005hb  Oct. 13.53   6 45 31.64  +25 49 58.0  19.5  18".8 E, 7".6 N

Approximate unfiltered magnitudes from the respective groups:  SN
2005gm in NGC 1423, 2004 Oct. 16.31 UT, [19.0 (Schwartz, 0.81-m
telescope at Patagonia, AZ); 2005 Oct. 12.38, 18.0.  SN 2005gn in
ESO 488-G30, 2004 Mar. 10.15, [19.0; 2005 Sept. 12.55, [18.0; Oct.
13.53, 18.0.  SN 2005gz in MCG -01-53-22, Sept. 23.19, [20.0; Oct.
2.20, [17.5; 14.18, 18.0.  SN 2005ha in UGC 3457, Oct. 3.51, [19.0,
14.50, 18.0.  SN 2005hb in UGC 3531, 2004 Mar. 12.28, [20.0; 2005
Sept. 28.53, [19.5; Oct. 3.54, [18.8; 14.50, 19.2.

Host galaxy info: vel = 11895 km/s, 1.2 x 0.9, 15, Sc

SN type info: IIn

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