POSSIBLE NOVA IN M31

Guoyou Sun(Wenzhou, Zhejiang, China) and Xing Gao (Urumqi, Xinjiang, China)，report the discovery of a possible nova (mag approximately 17.7) on several 60-s survey images (limiting mag about 19.0) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around Dec. 11.51661 UT using a unfilled CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=356-mm @f/6.9 ). the new object approximately located at R.A.=00h42m31s.1 Decl.=+41°27’20”.4 (equinox 2000.0).Nothing is visible at this position on archival images taken on Dec 06.52 (limiting mag 19.0) or on the DSS(POSS-II Red) from 1988 Nov.27 (limiting red mag 20.8).

NET USNO-A2.0
XM01GS C2010 12 10.51463 00 42 31.07 +41 27 20.4 16.1 V C42
XM01GS C2010 12 11.51661 00 42 31.07 +41 27 20.4 17.7 V C42

All images can be seen from:http://www.xjltp.com/XOSS/XM01GS/XM01GS.htm

C42 Xingming Observatory, Mt. Nanshan. Observers G.Sun,X.Gao ,Measurers G.Sun. 0.36-m f/6.9 Schmidt-Cassegrain telescope and CCD.