POSSIBLE SUPERNOVA IN PGC 2027055

Zhijian Xu(Nanjing,Jiangsu,China) and Xing Gao (Urumqi,Xinjiang,China), report the discovery of a possible supernova (mag approximately 17.6) on one 40-s survey image (limiting mag about 19.0) taken by Xing Gao in Xingming Observation Sky Survey(C42) around Aug.17.82087 UT. using an unfiltered CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=356-mm @f/6.9 ). The new object approximately located at R.A.=01h 10m 11s.91 Decl.=+33 13 53.6(equinox 2000.0). Which is about 0.7″ west and 1.5″ south of the center of the PGC 2027055. Nothing is visible at this position on archival images taken on Jan.17(limiting mag 18.3), Jan.09(limiting mag 19.0),or on the DSS from Oct.03,1991(limiting mag about 19.7). We confirmed this object on two 60-s images around Aug.18.70356 UT.

NET USNO-B1.0
XM72ZX C2015 08 17.82087 01 10 11.91 +33 13 53.6 17.6 V C42
XM72ZX C2015 08 18.70356 01 10 11.95 +33 13 53.7 17.6 V C42
XM72ZX C2015 08 18.70439 01 10 11.90 +33 13 53.7 17.6 V C42
All images can be seen from: http://www.xjltp.com/XOSS/XM72ZX/XM72ZX.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.

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