SIMBAD references

D. Denisenko, Sternberg Astronomical Institute, Moscow State University, reports the discovery by S. Shurpakov of an apparent supernova (mag 16.0) on two unfiltered 60-s images obtained with the 0.40-m f/2.5 MASTER-Amur robotic telescope (+ 16-megapixel CCD camera) on Aug. 21.564 and 21.595 UT. The new object is located at R.A. = 17:31:52.66, Decl. = +71:50:12.0 (equinox 2000.0), which is 14".7 west and 13".8 south of the nucleus of PGC 60437. Nothing was visible at this position on a MASTER-Amur unfiltered image taken on July 23.56 (limiting magnitude 19.0). The discovery image is posted at URL http://master.sai.msu.ru/static/OT/PSNJ17315266+7150120-MASTER.jpg. The variable was designated PSN J17315266+7150120 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2012er based on the spectroscopic confirmation reported below. Additional unfiltered CCD magnitudes for 2012er: Aug. 22.154, 17.2 (R. A. Koff, Bennett, CO, USA; Meade 0.25-m f/10 reflector + SBIG ST-9E camera; limiting magnitude 18.0; position end figures 52s.52, 08".9; UCAC3 reference stars); Aug. 28.007, 17.5 (David Grennan, Dublin, Ireland; 35-cm Schmidt-Cassegrain telescope; position end figures 52s.67, 10".3); Sept. 13.840, R_c = 17.6 (Massimiliano Martignoni, Magnago, Italy; 0.25-m f/10 Schmidt-Cassegrain reflector; position end figures 52s.64, 09".5).