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THE ASTRONOMER Electronic Circular No 2295      2006 Dec 28 18.43UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074
INTERNET: GUY@TAHQ.DEMON.CO.UK      Backup: gmh@wdcc1.bnsc.rl.ac.uk
WORLD WIDE WEB                         http://www.theastronomer.org
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SUPERNOVA 2006ss IN NGC 5579
The discovery of this object by Tom Boles was originally announced on TA 
E-Circular 2291. Subsequently S. Blondin, M. Modjaz, R. Kirshner, and P. 
Challis, Harvard-Smithsonian Center for Astrophysics, report on CBET 781 
that a spectrum (range
350-740 nm) obtained on Dec. 21.57 UT by M.Calkins with the F. L. 
Whipple Observatory 1.5-m telescope shows it to be a type-IIb supernova.

Cross-correlation with a library of supernova spectra indicates that 
2006ss is similar to SN 1993J at 19 days past explosion; see the 
following URL for a comparison plot: 
http://www.cfa.harvard.edu/oir/Research/supernova/spectra/sn2006ss_comp.g
if).

SUPERNOVA 2006st IN NGC 4017
Discovery by LOSS of a possible supernova (CBET 778):
SN      2006 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2006st  Dec. 18.57  11 58 40.97  +27 27 37.6  18.3   63"  W, 29"  N
Type-II supernova

SUPERNOVA 2006su IN IC 3772
Discovery by G. Duszanowicz, Sweden, of a possible supernova (CBET 784):
SN      2006 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2006su  Dec. 18.14  12 46 56.88  +36 32 01.8  17.7    8.5"E, 10.5"N
0.32-m f/3.1 reflector + CCD. Type-Ia about 3-4 weeks past maximum from 
spectrum of Dec 24.

Guy M Hurst