POSSIBLE SUPERNOVA IN PGC 69439

Bin Wang(Shaoxing, Zhejiang, China) and Xing Gao
(Urumqi,Xinjiang,China), report the discovery of a possible supernova
(mag approximately 17.0) on a 40-s survey image (limiting mag about
19.5)taken by Xing Gao in Xingming ObservationSky Survey(C42) around
Jun.16.82392 UT. using an unfiltered CCD ( + Celestron C14
Schmidt-Cassegrain telescope D=350-mm @f/6.9 ). The new object
approximately located at R.A. =22h 39m 50s.67
Decl.=+38o12'44".3(equinox 2000.0). Which is about 14.0" east and
11.2" south of the center of the PGC 69439. Nothing is visible at
this position on archival images taken on Jun. 01(limiting mag 19.0 or
on the DSS from Sep. 03,1989(limiting mag about 19.8).

NET USNO-A2.0
XM06BW C2013 06 16.82392 22 39 50.67 +38 12 44.3 17.0 V C42

All images can be seen from: http://www.xjltp.com/XOSS/XM06BW/XM06BW.htm
C42,Xingming Observatory,Mt. Nanshan. Observers B.Wang,X.Gao,Measurers
B.Wang 0.36-m f/6.9 Schmidt-Cassegrain telescope and CCD

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Discovery image taken by C42 on Jun.16.82392 UT,2013(LM=19.5,40S)

DSS IMAGE

archival image taken on Jun. 01