POSSIBLE NOVA IN M31Jiangao Ruan(Fangchenggang, Guangxi, China) and Xing Gao (Urumqi, Xinjiang, China)，report the discovery of a possible nova (mag approximately 16.3) on two 60-s survey images (limiting mag about 19.5) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around Dec. 01.52049 UT using a unfilled CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=356-mm @f/6.9 ). the new object approximately located at R.A.=00h40m24s.38 Decl.=+41°04’03”.6 (equinox 2000.0). Nothing is visible at this position on archival images taken on Nov.29(limiting mag 19.5) and Nov.28 (limiting mag 19.5) or POSS-II N images from 1993-10-21
(limiting red mag 20.8).
(limiting red mag 20.8).
All images can be seen from: http://www.xjltp.com/XOSS/XM02JR/XM02JR.htm
NET USNO-B1.0
XM02JR C2010 12 01.52049 00 40 24.38 +41 04 03.6 16.3 V C42
XM02JR C2010 12 01.54296 00 40 24.37 +41 04 03.7 16.1 V C42
C42 Xingming Observatory, Mt. Nanshan. Observers J.Ruan,X.Gao ,Measurers J.Ruan. 0.36-m f/6.9 Schmidt-Cassegrain telescope and CCD.
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Discovery image taken by C42 on Dec. 01.52049（LM=19.5,60S） taken on Dec. 01.54296(60S)
DSS IMAGE RED(LM=20.8)
archival images taken on Nov.28 Nov.29