POSSIBLE SUPERNOVA IN NGC 2446

Zhijian Xu(Nanjing,Jiangsu,China) and Xing Gao (Urumqi,Xinjiang,China), report the discovery of a possible supernova (mag approximately 17.9) on several 40-s survey images (limiting mag about 19.5) taken by Xing Gao in Xingming Observation Sky Survey(C42) around Mar.26.69009 UT.using an unfiltered CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=356-mm @f/6.9 ). The new object approximately located at R.A.=07h 48m 44s.10 Decl.=+54กใ36'40".5(equinox 2000.0). Which is about 54.8" east and 2.4" south of the center of the NGC 2446. Nothing is visible at this position on archival images taken on Mar.3(limiting mag 19.0),Mar.21(limiting mag 18.5), or on the DSS from Feb.25,1995(limiting mag about 19.5).

NET USNO-A2.0
XM66ZX C2014 03 26.69009 07 48 44.10 +54 36 40.5 17.9 V C42
All images can be seen from: http://www.xjltp.com/XOSS/XM66ZX/XM66ZX.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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Discovery image taken by C42 on Mar.26.69009 UT,2014

DSS IMAGE

archival image & discovery image & confirm image