[IAUC] CBET 2135: 20100120 : APPARENT NOVA IN M31: M31N 2010-01b

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                                                  Electronic Telegram No. 2135
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
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APPARENT NOVA IN M31:  M31N 2010-01b
     Koichi Nishiyama, Kurume, Fukuoka-ken, Japan; and Fujio Kabashima,
Miyaki-cho, Saga-ken, Japan, report the discovery of an apparent nova (mag
18.1) in M31 on seven 40-s unfiltered CCD frames (limiting mag 19.5) taken
around Jan. 17.438 UT using a Meade 200R 0.40-m f/9.8 reflector (+ SBIG
STL1001E camera).  M31N 2010-01b is located at R.A. = 0h43m00s.07 +/- 0s.01,
Decl. = +41d25'16".9 +/- 0".1 (equinox 2000.0), which is 178" east and 548"
north of the center of the galaxy.  Additional magnitudes for M31N 2010-01b:
Jan. 8.435, [19.0; 16.457, [19.1; 18.426, 17.1.  Nothing is visible at this
position on the Digitized Sky Survey (DSS) red and infrared plates.  T. Yusa,
Osaki, Japan, reports that eighteen stacked 120-s unfiltered CCD frames
(limiting mag 20.0) taken on Jan. 17.540 using a 0.30-m f/8.2 Cassegrain
telescope yield mag 18.3 and position end figures 00s.13, 17".4 for M31N
2010-01b, adding that nothing is visible at this position on DSS images
from 1985 Dec. 17 and 1986 Nov. 28 (red).  Yusa has posted an image marking
the new object at http://space.geocities.jp/yusastar/images/PNin31_100117.jpg.


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                         (C) Copyright 2010 CBAT
2010 January 20                  (CBET 2135)              Daniel W. E. Green