POSSIBLE SUPERNOVA IN UGC 8246

Bin Wang(Shaoxing, Zhejiang, China) and Xing Gao (Urumqi,Xinjiang,China), report the discovery of a possible supernova (mag approximately 17.7) on a 40-s survey image (limiting mag about 19.5)taken by Xing Gao in Xingming ObservationSky Survey(C42) around Dec.20.93169 UT. using an unfiltered CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=350-mm @f/6.9 ). The new object approximately located at R.A. =13h 10m 07s.34 Decl.=+34กใ10'51".4(equinox 2000.0). Which is about 32.7" east and .8" south of the center of the UGC 8246. Nothing is visible at this position on archival images taken on Mar.31 (limiting mag 19.0 )or on the DSS from Jan. 10,1989(limiting mag about 19.8).

NET USNO-A2.0
XM10BW C2013 12 20.93169 13 10 07.34 +34 10 51.4 17.7 V C42
XM10BW C2013 12 26.96341 13 10 07.40 +34 10 51.1 17.7 V C42
XM10BW C2013 12 27.92593 13 10 07.34 +34 10 49.0 17.8 V C42

All images can be seen from: http://www.xjltp.com/XOSS/XM10BW/XM10BW.htm

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

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Discovery image taken by C42

DSS IMAGE

archival image taken by C42 on Mar.31 , 2013