2011CBET.2909....1D

Denis V. Denisenko, Space Research Institute, Moscow, reports his discovery of a possible supernova (mag 18.2) on four unfiltered CCD images obtained on Nov. 3.88 UT by V. Gerke and S. Korotkiy remotely with the 40-cm Djigit telescope (+ SBIG STL-11K camera) at the Ka-Dar Observatory's TAU station (Nizhniy Arkhyz, Karachay-Cherkessia). The new object is located at R.A. = 8:52:34.24, Decl. = +55:15:14.2 (equinox 2000.0; uncertainty 0".1), which is 0".9 west and 0".4 north of the presumed host galaxy (SDSS J085234.35+551513.8; magnitudes u = 21.3, g = 20.6, r = 20.2, i = 19.9, z = 19.8). A comparison of the discovery image and a Palomar Sky Survey red plate is posted at URL http://pics.livejournal.com/bigdenru/pic/000as20q/g35. The variable was designated PSN J08523424+5515142 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2011hz based on the spectroscopic confirmation reported below. Additional CCD magnitudes for 2011hz (unfiltered unless noted otherwise): Nov. 3.48, 18.5 (Catalina Sky Survey, via A. Drake and S. Korotkiy); 7.94, 18.5 (V. Gerke and S. Korotkiy, 40-cm Djigit discovery telescope, TAU station); 8.418, R = 17.8 (Joseph Brimacombe, Cairns, Australia; position end figures 34s.34, 13".9); 13.096, 18.5 (Federica Luppi and Luca Buzzi, Varese, Italy; position end figures 34s.34, 13".9; reference stars from CMC-14 catalogue).