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THE ASTRONOMER Electronic Circular No 2905      2013 Apr 04 16.21UT
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 J164114.46+192840.9 - new CV
P. Balanutsa et. al., Moscow State University, reports on 'The 
Astronomer's Telegram 4938' their discovery of MASTER OT 
J164114.46+192840.9 using the MASTER-Kislovodsk auto-detection system. 
The optical transient (OT) has been found at:
RA 16h 41m 14.46s DEC +19d 28' 40.9" and noted on 2013 Mar 31.013UT
The unfiltered magnitude is 16.3 (limit 18.3). The OT is seen in two 
images. There is no minor planet at this place. A reference image of 
2012  May 28.842UT with unfiltered magnitude limit 19.7 did not show the 
transient.

The object at quiescence is identical to:
SDSS J164114.49+192840.5 (u=22.11, g=22.14, r=21.70, i=21.44, z=20.91). 
It is present in GSC 2.3.2 with coordinates:
RA 16 41 14.512 DEC +19 28 40.71 and jmag=21.66. No previous outbursts 
were detected on 12 Palomar plates and by CRTS.

Based on the approximate amplitude of five magnitudes and blue colour 
they conclude it is a new cataclysmic variable in outburst.
The discovery and reference images are available at: 
http://master.sai.msu.ru/static/OT/164114.46192840.9.png

EDITOR'S RETURN
Further to TA E-Circular 2904, the editor has resumed duties but there 
is a backlog of over 600 astronomical messages which will take a few 
days to review and may result in delayed replies. If you have sent 
anything during my absence which needs immediate attention and have not 
yet received a response please re-send marked 'URGENT' in the subject 
line.

I am grateful to Nick James and Denis Buczynski for handling queries 
during my absence.

Guy M Hurst