POSSIBLE SUPERNOVA IN Galaxy 2MASX J02294877+4546331
Zheng Cao, Di Hu, Jiangao Ruan and Xing Gao report the discovery of a possible supernova in Galaxy 2MASX J02294877+4546331. The transient (mag approximately 17.9) on one 40-s survey image (limiting mag about 19.5) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around Dec. 13.80951, 2017, using a unfiltered CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=356-mm @f/6.9 ). The new object approximately located at R.A.=02h29m49.51s +45d46’51”.6 (equinox 2000.0). Which is about 7.7″ east and 18.5″ north of the center of the 2MASX J02294877+4546331. Nothing is visible at this position on archival image taken on Nov. 09.62782, 2017 (limiting mag 19.5). All images can be seen from:
PSP17G C2017 12 13.80951 02 29 49.51 +45 46 51.6 17.9 V C42
Using a unfiltered CCD + Celestron C14 Schmidt-Cassegrain telescope D=356-mm @f/6.9.
Discovery image taken by C42 on Dec.13.80951 UT,2017
Archival images taken by C42 on Nov.09 UT,2017