POSSIBLE SUPERNOVA IN PGC 16301

Jiaming Liao(Hefei,Anhui,China),Jiangao Ruan(Fangchenggang,Guangxi,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 Sept.11.87181 UT. using an unfiltered CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=356-mm @f/6.9 ). The new object approximately located at R.A.=04h 54m 44s.10 Decl.=+69 43 07.5(equinox 2000.0). Which is about 67.1" east and 13.8" north of the center of the PGC 16301. Nothing is visible at this position on archival images taken on Aug.20(limiting mag 19.0), or on the DSS(POSS-II N) from Oct.01,1996(limiting mag about 19.7).
NET UCAC-4
XM22RJ C2015 09 11.87181 04 54 44.10 +69 43 07.5 17.6 V C42

All images can be seen from: http://www.xjltp.com/XOSS/XM22JR/XM72ZX22JR.htm
C42,Xingming Observatory,Mt. Nanshan. Observers J.Liao,J.Ruan,X.Gao,Measurers Z.Xu 0.36-m f/6.9 Schmidt-Cassegrain telescope and CCD.

 

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Discovery image taken by C42 on Sep.11.87181 UT,2015

DSS IMAGE

pre-discovery image taken by C42 on Sep.02 UT,2015

Archival images taken by C42 on Aug.20 UT,2015