Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J12555051+3030415

PSN J12555051+3030415   2013 05 06.54  *  12 55 50.51 +30 30 41.5  17.7 U    1E   0N            9 9

2013 05 06.54

We discovered this object on May 06.54 2013 UT in the Tsinghua University-NAOC Transient Survey (TNTS),and the magnitude of the object on unfiltered CCD was about 17.7 mag. Checking our earlier images, we found that it can be detected in the TNTS images taken on Apr. 25. This candidate can be classified as a luminous (Broad-line) type Ic supernova according to the spectrum taken by Siverman et al. with the 9.2-m Hobby-Eberly Telescope on May 13.

2013 05 01.806

D. Denisenko, V. Lipunov, E. Gorbovskoy (SAI MSU) report on behalf of the larger MASTER-net collaboration: PSN J12555051+3030415 was found post factum on MASTER-Kislovodsk unfiltered survey images (60 sec exposures) obtained on 2013 May 01.806 and 01.838 UT (4.7 days before the discovery by TNTS). Position end figures (average of two measurements): 50s.53, 41".5; magnitudes: 01.806, 16.9 (limit 19.3); 01.838, 17.0 (m_lim=19.5). Prediscovery and reference images by MASTER-Kislovodsk are available at: http://master.sai.msu.ru/static/OT/PSNJ12555051+3030415-MASTER.jpg