POSSIBLE SUPERNOVA IN UGC 11975

Zhangwei Jin(Ningbo, Zhejiang, China) and Xing Gao (Urumqi, Xinjiang, China), report the discovery of a possible supernova (mag approximately 16.1) on a 40-s survey image (limiting mag about 18.6)taken by Xing Gao in Xingming ObservationSky Survey(C42) around Feb. 27.99709,UT.2015. using an unfiltered CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=350-mm @f/6.9 ).the new object approximately located at R.A. =22h 17m 14s.86 Decl.=+35 34 00.4(equinox 2000.0). Which is about 55.0" west and 15.8" south of the center of the UGC 11975.

Nothing is visible at this position on archival images taken on Jan.11,2015. (limiting mag 19.5) or on the DSS(POSS2/UKSTU Red) from Sep. 30,1986(limiting mag about 19.8)

NET USNO-A2.0

XM52ZJ C2015 02 27.99709 22 17 14.86 +35 34 00.4 16.1 V C42

All images can be seen from: http://www.xjltp.com/XOSS/XM52ZJ/XM52ZJ.htm

C42,Xingming Observatory, Mt. Nanshan. Observers Z.Jin, X.Gao ,Measurers Z.Jin 0.35-m f/6.9 Schmidt-Cassegrain telescope and CCD.



--------------------------

Discovery image taken by C42 on Feb.27 ,2015

DSS IMAGE

archival image