2011CBET.2915....1M

H. Mikuz and B. Dintinjana, Crni Vrh Observatory, report the discovery of a possible supernova (mag 17.0) by Jan Vales on four unfiltered CCD images (bandpass roughly equivalent to the R band) taken on Nov. 17.780-17.825 UT with the 60-cm f/3.3 Cichocki reflector in the course of the Comet and Asteroid Search Program (PIKA) at Crni Vrh Observatory. The new object is located at R.A. = 23:00:54.71, Decl. = +18:50:32.3 (equinox 2000.0; uncertainty about 0".2), which is approximately 6" east and 4" south of the center of a nearby galaxy. Nothing is visible at this position on several Digitized Sky Survey red and blue images from the Palomar Sky Survey. The discovery image is posted at the following website URL: http://www.observatorij.org/vstars/PSN20111117/PSN20111117.jpg. The variable was designated PSN J23005471+1850323 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2011ie based on the spectroscopic confirmation reported below. Additional CCD magnitudes for 2011ie (unfiltered unless noted otherwise): 2009 Sept. 27, [18.0 (PIKA; R filter); 2011 Oct. 3, [19.5 (PIKA; unfiltered); Nov. 18.752, R = 17.03 ± 0.05 (Dintinjana and Mikuz; photometry somewhat contaminated by nearby galaxy); 20.12, 17.3 (R. A. Koff, Bennett, CO, USA; Meade 0.25-m f/10 reflector + Apogee AP-47p camera; limiting magnitude 20.3; position end figures 54s.71, 32".4; UCAC3 reference stars); 21.772, R = 16.7 ± 0.1 (B. Dintinjana and S. Maticic).