Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J06453325-4251264

PSN J06453325-4251264   2015 12 06.0233*  06 45 33.25 -42 51 26.4  18.0 U    3W   9N  P556833   9 0

2015 12 06.02329

Vladimir Lipunov, David Buckley and Elena Popova reports the MASTER-SAAO(twin 0.40-m f/2.5reflector + 4Kx4K CCD) auto-detection system dicovered possible supernova source at (RA, Dec) = 06h 45m 33.25s -42d 51m 26.4s on 2015-12-06.02329 UT with unfiltered magnitude(W=0.2B+0.8R calibrated to USNO-B1) m_PSN=18.0 (the limit is 19.5). This PSN (MASTER OT J064533.25-425126.4) is in 2.6W 8.9N from PGC556833 galaxy and is seen at 5 images. There is no minor planet at this place. E.Gorbovskoy and N.Tiurina report that nothing was visible at this position on the MASTER-SAAO images obtained on 2015-02-18.6277UT with 20.6 unfiltered magnitude limit (ATEL #8377). The discovery and reference images are available at http://master.sai.msu.ru/static/OT/MASTER064533.25-425126.4.jpg