POSSIBLE NOVA IN M31Jiangao Ruan(Fangchenggang, Guangxi, China) and Xing Gao (Urumqi, Xinjiang, China)，report the discovery of a possible nova (mag approximately 19.2) on a 60-s survey images (limiting mag about 19.5) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around Nov. 07.52046UT using a unfilled CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=356-mm @f/6.9 ). the new object approximately located at R.A.=00h41m06s.44 Decl.=+41°59’22”.2 (equinox 2000.0). Nothing is visible at this position on archival images taken on Nov.06 (limiting mag 19.5) and Nov.05 (limiting mag 19.5) or on the DSS(POSS-II Red) from 1989 Oct.01 (limiting red mag 20.8).
All images can be seen from: http://www.xjltp.com/XOSS/XM10AX/XM10AX.htm
NET USNO-A2.0
XM10AX C2010 11 07.52046 00 41 06.44 +41 59 22.2 19.2 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 Nov. 07.52046（LM=19.5）
DSS IMAGE RED(LM=20.8)
archival images taken on Nov.05