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THE ASTRONOMER Electronic Circular No 2626      2010 Feb 23 16.50UT
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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PROBABLE NOVA IN SCORPIUS
Koichi Nishiyama and Fujio Kabashima, Japan, report on CBET 2183 their 
discovery of a possible magnitude 10.5 nova in Scorpius on two 
unfiltered CCD frames (limiting magnitude 12.7) of 2010 Feb. 20.857 UT 
using a 105-mm f/4 camera lens + SBIG STL6303E camera. Subsequent images 
of Feb 22.846UT confirmed the presence of the new object at magnitude 
10.7. (Meade 200R 0.40-m f/9.8 reflector).

They provide the following precise position:
RA 17h 06m 07.53s DEC -37 14' 27.4" (2000)

Nothing is visible at this position on two past survey frames taken on 
2009 Sept. 18.425 (limiting mag 13.6) and Oct. 3.414 (limiting mag 
12.3), nor on a DSS plate from 1997 Apr. 2.8 (limiting red mag 18.0).

Following an appeal by the Central Bureau, R. Kaufman, Australia using a 
DSLR camera and 200-mm zoom camera lens obtained images on Feb. 22.594 
which show the new star at mag perhaps 11.4.

S. Kiyota, Japan, remotely using the GRAS 0.32-m reflector in South 
Australia reports position end figures 07s.51, 26".9 and the following 
magnitudes:  Feb. 22.701, V = 12.03; 22.702, B = 13.09; 22.703, R_c = 
10.70; 22.705, I_c = 9.65.

An e-mail has been received at TAHQ from Ernesto Guido and Giovanni 
Sostero who also imaged this remotely through a 0.40-m f/3.8 reflector 
from the GRAS Observatory at Moorook on Feb. 22.8. Their unfiltered CCD 
image yielded magnitude about 10.1 and position end figures 07s.50, 
27".7. An animation showing their image with respect to an archival DSS 
plate is posted at website URL http://bit.ly/9wAoFN

SUPERNOVA 2009nk IN NGC 5491
Discovery by the Koichi Itagaki, Japan of a possible supernova (CBET 
2102):
SN      2009 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2009nk  Dec 29.86   14 10 58.72  +06 21 47.9  17.0    20  "E, 6  "S
The discovery image has been posted at:
http://www.k-itagaki.jp/images/psn5491.jpg

SUPERNOVA 2009nl IN ANONYMOUS GALAXY
Discovery by CRTS of a possible supernova (CBET 2106):
SN      2009 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2009nl  Oct 23.37   03 39 47.78  -11 13 25.0  18.7     0.9"E, 1.8"S
Similar to a type-Ic supernova

SUPERNOVA 2009nm IN ANONYMOUS GALAXY
Discovery by CRTS of a possible supernova (CBET 2106):
SN      2009 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2009nm  Nov 20.48   10 05 24.54  +51 16 38.7  18.8     0.3"W, 0.4"N
Possibly a type-IIn

Guy M Hurst