Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J16541897+5152369

PSN J16541897+5152369   2013 01 22.0416*  16 54 18.97 +51 52 36.9  17.5 U   78E  28N  PGC59221  250

2013 01 22.0416

V. Lipunov (SAI MSU) reports the discovery by S. Shurpakov of a possible supernova (mag. 17.5) on two unfiltered survey images (limiting mag 19.0) taken on Jan. 22.041 and 22.009 UT with the MASTER-Kislovodsk robotic telescope (0.40-m f/2.5 reflector + 4Kx4K CCD). The new object is located at R.A. = 16h54m18s.97, Decl. = +51o52'36".9 (equinox 2000.0). The OT unfiltered magnitude is 19.1m (limit 19.5m). The OT is seen in 2 images. There is no minor planet at this place. We have reference image without OT on 2010-06-09.89581 UT with magnitude limit in 'R' filter 19.7m. There are 3 galaxies around. The brightest one is PGC 59221 (B=15.4) with a long distorted spiral arm. The OT offset is 78.3" E and 28.5" N. Two other galaxies are closer to the OT. Spectral observations are required. The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/165418.97515237.0.png (see also ATel #4756).

2013 03 27.2724

L. Elenin (Lyubertsy, Russia) and I. Molotov (Moscow, Russia) can't confirm an apparent supernova candidate PSN J03412317-1745348. Object not visible on 3x300sec images remotely taken at ISON-NM Observatory (Mayhill, NM, USA) with 0.45-m f/2.8 telescope + CCD (KAF09000) on Mar. 27.2724, 2013. Mag. limit ~18.7m.