Zhijian Xu(Nanjing,Jiangsu,China) and Xing Gao (Urumqi,Xinjiang,China), report the discovery of a possible supernova (mag approximately 17.9) on a 40-s survey image (limiting mag about 18.8)taken by Xing Gao in Xingming ObservationSky Survey(C42) around Aug. 18.80979 UT. using an unfiltered CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=350-mm @f/6.9 ). The new object approximately located at R.A. =18h 40m 28s.84 Decl.=+36<07'17".4(equinox 2000.0). Which is about 13.6" west and 12.2" south of the center of the PGC 62237.Nothing is visible at this position on archival images taken on Aug. 7(limiting mag 19.0) or on the DSS(POSS2/UKSTU Red) from Aug. 20,1992(limiting mag about 19.8)

XM48ZX C2012 08 18.80979 18 40 28.84 +36 07 17.4 17.9 V C42
XM48ZX C2012 08 19.64152 18 40 28.88 +36 07 16.8 17.9 V C42

All images can be seen from: http://www.xjltp.com/XOSS/XM48ZX/XM48ZX.htm
C42,Xingming Observatory,Mt. Nanshan. Observers Z.Xu,X.Gao,Measurers Z.Xu 0.36-m f/6.9 Schmidt-Cassegrain telescope and CCD.




 Discovery image taken by C42 on Aug.18.80979 UT,2012LM=18.8,40S            

Conform image take by C42 on Aug.19.64152 UT,2012LM=19.0,40S

             DSS IMAGE


archival image taken on 2012.Aug.07