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THE ASTRONOMER Electronic Circular No 2640      2010 Apr 26 14.48UT
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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POSSIBLE NOVA IN SAGITTARIUS
Koichi Nishiyama and Fujio Kabashima, Japan, report on CBET 2261 their 
discovery of a possible magnitude 11.2 nova on two 40-s unfiltered CCD 
frames (limiting magnitude 13.2) of 2010 Apr. 23.78 UT using a 105-mm 
f/4 camera lens + CCD. They used five 2-s unfiltered CCD frames 
(limiting magnitude 17.0) taken around Apr 23.791 with a Meade 200R 
0.40-m f/9.8 reflector (+ SBIG STL1001E camera) to measure the following 
precise position for the variable:

RA 17h 53m 02.98s DEC -28 12' 19.4" (2000).  Nothing is visible at this 
position on their earlier images of Apr. 2.83 (limiting mag 12.9) and 
16.75 (limiting mag 13.1), nor on the Digitised Sky Survey from a red 
plate taken on 1996 Sept. 12 (limiting mag 17.5).

A USNO-B1.0-catalogue star of red mag 17.4 has position end figures 
03s.11, 19".0. A confirming image by the discoverers with the 0.40-m 
reflector on Apr 24.673 yields mag 11.6 and position end figures 03s.00, 
19".3.

SUPERNOVA 2010aj IN MCG -01-32-35
Discovery by J. Newton and T. Puckett of a possible supernova (CBET 
2201):
SN      2010 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2010aj  Mar 12.39   12 40 15.16  -09 18 14.3  17.1   12.4"W, 11.7"N
SUPERNOVA 2010ak IN MCG +03-41-142
Discovery by LOSS of a possible supernova (CBET 2203):
SN      2010 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2010ak  Mar 11.55   16 10 50.01  +17 58 36.1  18.2    7.5"W,  7.3"N

SUPERNOVA 2010al IN UGC 4286
Discovery by D. Rich of a possible supernova (CBET 2207):
SN      2010 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2010al  Mar 13.03   08 14 15.91  +18 26 18.2  17.8    9.5"W,  8.1"S

SUPERNOVA 2010am IN ANONYMOUS GALAXY
Discovery by CRTS of a possible supernova (CBET 2208):
SN      2010 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2010am  Mar 12.19   09 33 01.75  +15 49 08.8  17.8    5.2"W,  7.3"S

SUPERNOVA 2010an IN NGC 6109
Discovery by LOSS of a possible supernova (CBET 2211):
SN      2010 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2010an  Mar 11.56   16 17 40.46  +35 00 10.1  17.0    1.3"W,  5.1"S
The type-Ia supernova 2003ia also appeared in NGC 6109

SUPERNOVA 2010ao IN UGC 8636
Discovery by LOSS of a possible supernova (CBET 2211):
SN      2010 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2010ao  Mar 18.46   13 43 40.99  +03 54 00.1  19.0   10.6"E, 12.8"N

Guy M Hurst