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THE ASTRONOMER Electronic Circular No 2679      2010 Oct 19 14.23UT
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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MASTER OT 015347+303844
A.J. Drake, (Caltech), S.G. Djorgovski, A.A. Mahabal, M.J. Graham, R. 
Williams (Caltech);J.L. Prieto (Carnegie Obs), M. Catelan(PUC); E. 
Christensen (Gemini Observatory); E.C. Beshore, S.M. Larson report on 
The Astronomer's Telegram 2938 that the Catalina Real-time Transient 
Survey (CRTS) has extracted the CSS photometry at the location of MASTER 
OT 015347+303844 (see TA E-Circular 2678).

Over the period 2004 Jan 5 to 2010 Oct 9 the transient is detected in 
images taken on 2008 Sept 23, 2008-Sept 30 & 2010 Oct 9 with approximate 
V magnitudes of 19.2, 19.4 and 19.8, respectively.  The presence of an 
outburst in September 2008 suggests that the object is likely a 
cataclysmic variable (CV) and is certainly not a supernova. 
Additionally, the brightness of the transient appears to vary between 
the observations taken on 2010 Oct 9. As these images are separated by 
an interval of ~13 mins, this rapid variability supports classification 
of the transient as a CV.

SUPERNOVAE 2010hf IN MCG +09-11-21
G. H. Marion and P. Challis, Harvard-Smithsonian Center for Astrophysics 
(CfA), on behalf of the CfA Supernova Group, report that a 
low-signal-to-noise spectrum (range 360-740 nm) of 2010hf (cf TA 
E-Circular 2671) obtained on Sept. 2 UT by P. Berlind with the F. L. 
Whipple Observatory 1.5-m telescope (+ FAST), shows it to be a type-IIb 
supernova then a few days after maximum light.

SUPERNOVA 2010hg IN NGC 3001
Discovery by Berto Monard of a possible supernova (CBET 2434):
SN      2010 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2010hg  Sep  1.14   09 46 13.7   -30 27 13.3  15.0   64  "W, 58  "S

SUPERNOVA 2010hh IN NGC 6524
Discovery by LOSS of a possible supernova (CBET 2435):
SN      2010 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2010hh  Sep  1.22   17 59 18.38  +45 52 32.2  18.3   38.7"E, 42.4"S
An independent discovery by Koichi Itagaki has been reported at mag 18.1 
on a unfiltered CCD frames (limiting mag 21.0) taken on Sept. 2.588 UT 
using a 0.60-m f/5.7 reflector.

SUPERNOVA 2010hj IN PGC 67413
Discovery by Siding Spring Observatory of a possible supernova (CBET 
2438):
SN      2010 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2010hj  Aug  4.61   21 49 09.84  -59 02 23.2  17.1    5.5"W,  8.2"S

SUPERNOVA 2010hk IN UGC 2802
Discovery by J. Newton and T. Puckett of a possible supernova (CBET 
2439):
SN      2010 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2010hk  Sep  2.44   03 37 52.61  +04 56 52.2  17.6   26.4"E,  3.9"S

SUPERNOVA 2010hm IN UGC 12687
Discovery by LOSS of a possible supernova (CBET 2442):
SN      2010 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2010hm  Sep  2.40   23 35 18.58  +12 55 31.9  18.9   14.8"E   4.5"N

Guy M Hurst