POSSIBLE SUPERNOVA IN UGC 11404(=PGC 62781)
Zhijian Xu(Nanjing,Jiangsu,China) and Xing Gao (Urumqi,Xinjiang,China), report the discovery of a possible supernova (mag approximately 17.4) on a 40-s survey image (limiting mag about 18.5)taken by Xing Gao in Xingming ObservationSky Survey(C42) around Nov. 12.55094 UT. using an unfiltered CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=350-mm @f/6.9 ). The new object approximately located at R.A. =19h 07m 00s.73 Decl.=+29°00’16”.6(equinox 2000.0). Which is about 34.5″ west and 6.5″ south of the center of the UGC 11404. Nothing is visible at this position on archival images taken on Nov. 9(limiting mag 19.0), Oct. 30(limiting mag 18.7) or on the DSS from Jun. 21,1987(limiting mag about 19.8).
XM54ZX C2012 11 12.55094 19 07 00.73 +29 00 16.6 17.2 V C42
All images can be seen from: http://www.xjltp.com/XOSS/XM54ZX/XM54ZX.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 Nov.12.55094 UT,2012 LM=18.5,40S
archival image taken on 2012.Oct.30 & Nov.9