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THE ASTRONOMER Electronic Circular No 2702      2011 Jan 01 20.42UT
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 PISCES
Hideo Nishimura, Japan, reports the discovery on CBET 2616 of a possible 
nova or new variable of mag 11.5 on four CCD frames (limiting magnitude 
13.5) of 2010 Dec. 29.40 UT using a 200-mm f/3.2 lens with a Canon EOS 
5D Digital camera mounted on a Takahashi EM100 equatorial telescope.  On 
a similar image (limiting mag 14.0) taken on Dec. 25.39, Nishimura 
reports that the object appeared at mag about 13.7.  Nishimura's 
measured position for the variable is:
RA 23h 04m 25.83s DEC +06 25' 45.8" (2000).  Nakano has measured the 
position end figures 25s.76 +/- 0s.05, 47".1 +/- 2".0 (probable error 
+/- 3") and mag 13.7 +/- 0.6 from two Dec. 29.4 BMP images supplied by 
Nishimura, calling into question the 11.5-magnitude figure reported by 
Nishimura.  Nakano also forwards position end figures 25s.90, 46".0 (and 
magnitude 13.8) for the variable from K. Kadota (Ageo, Japan, 0.25-m f/5 
reflector + SBIG ST-9E camera) from ten stacked, unfiltered 20-s CCD 
images (limiting mag 18.1) taken on Dec. 31.37, adding that Kadota found 
a USNO-B1.0-catalogue star at position end figures 25s.859, 46".03 with 
blue mag 19.8 and red mag 18.9.  Nakano further adds that T. Yusa 
(Osaki, Japan) finds an object on a Digitized Sky Survey image from 1990 
Oct. 14 at position end figures 25s.88, 45".8 (and mag 19.4 but no plate 
type or bandpass indicated).

Guy M Hurst