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THE ASTRONOMER Electronic Circular No 2643      2010 May 08 10.29UT
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 OR NEW CATACLYSMIC VARIABLE IN PEGASUS
According to CBET 2273, on 2010 May 7.4UT, Dae-Am Yi, Yeongwol-kun, 
Gangwon-do, Korea, reported the detection of an apparent new magnitude 
10.8 object on two images taken on May 6.77 with a Canon 5D digital 
camera (+ 93-mm camera lens).  Yi confirmed the object with a 400-mm 
lens on May 7.76, when the object had brightened to mag about 8.4.  The 
confirmation image suggests that the brightened object may be coincident 
with the GSC star 2197:886, whose catalogued position in GSC version 2.3 
is:
RA 21h 38m 06.571s DEC +26 19' 57.33" (2000), with magnitudes F = 13.88 
and j = 14.57.  Yamaoka notes that the Digitized Sky Survey image of GSC 
2197:866 is elongated toward the north-south, indicating that it is a 
double/multiple star.  Precise astrometry is strongly needed of Yi's 
object.  Yamaoka also notes that there is a bright x-ray source (1RXS 
J213807.1+261958) near the position, which suggests that the brightened 
object may be a cataclysmic variable star.

Guy M Hurst