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THE ASTRONOMER Electronic Circular No 2878      2012 Dec 07 20.06UT
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 2012hj IN MCG +08-20-89 = PSN J11071919+4622462
Tom Boles, Coddenham, England, reports the discovery of an apparent 
magnitude 17.7 supernova on unfiltered CCD images taken on 2012 Dec. 
4.168 and 4.990 with a 0.35-m Schmidt-Cassegrain telescope during 
searches for the UK Nova/Supernova Patrol. The new object is located at:
RA 11h 07m 19.19s DEC +46 22' 46.2" (2000), which is approximately
5.5"W and 14.1"S of the center of MCG +08-20-89 (= PGC 33672).
Nothing is present at this position on Palomar plates from
1997 Mar. 6 (limiting red mag 20.5) and 1990 Jan. 25 (limiting blue mag 
21.0). Additional magnitudes:
2011 Nov. 27, [19.5 (Boles); and 2012 Jan. 26, [19.5 (Boles); Dec. 
4.960, 17.7 (Ron Arbour, South Wonston, U.K., 0.35-m f/6 reflector; 
position end figures 19s.22, 46".3); 5.424, 18.0 (L. Elenin, Russia); 
remotely with a 0.45-m f/2.8 telescope at the ISON-NM Observatory near 
Mayhill, USA

L. Tomasella et. al., report that optical spectroscopy obtained on Dec. 
5.15 UT with the Asiago 1.82-m Copernico Telescope (+ AFOSC; range 
350-820 nm, resolution 1.3 nm), indicates that it is a very young 
type-Ia supernova about ten days before maximum light, at redshift z = 
0.024597 (Sloan Digital Sky Survey Data Release 4, 2005; via NED).  The 
expansion velocity, deduced from the Si II 635.5-nm absorption, is about 
16000 km/s.  The Asiago classification spectra are posted at: 
http://graspa.oapd.inaf.it; classification was made via GELATO 
(Harutyunyan et al. 2008, A.Ap. 488, 383) and SNID (Blondin and Tonry 
2007, Ap.J. 666, 1024).

Congratulations to Tom on the discovery of his 152nd supernova.

SUPERNOVA 2012hi IN UGC 4512 = PSN J08394202+6058160
The object announced on E-Circular 2876 and discovered by Tom Boles has 
been spectroscopically confirmed as his 151st supernova for which many 
congratulations.

L. Tomasella et. al., report that optical spectroscopy (range 340-820 
nm; resolution 1.3 nm), obtained on Dec. 5.09 UT with the Asiago 1.82-m 
Copernico Telescope (+ AFOSC; range 350-820 nm; resolution 1.3 nm), 
shows it is a type-II supernova a few days after explosion at redshift z 
= 0.02639.  Broad and shallow P-Cyg lines of H (H-alpha has a FWHM 
around 9000 km/s) are detected.
The Asiago classification spectra are posted at the following website 
URL: http://graspa.oapd.inaf.it; classification was made via GELATO 
(Harutyunyan et al. 2008, A.Ap. 488, 383) and SNID (Blondin and Tonry 
2007, Ap.J. 666, 1024).

Guy M Hurst