SIMBAD references

S. Nakano, Sumoto, Japan, reports the discovery by Masaki Tsuboi (Kuchita-minami, Asakita-ku, Hiroshima, Japan) of an apparent supernova (mag 16.8) on unfiltered CCD frames (limiting mag 17.9) taken on Aug. 4.533 UT using a 0.30-m f/5.3 reflector (+ ST-2000XM camera). The new object, which was designated PSN J13271319+5529174 when posted on the Central Bureau's TOCP webpage and is here designated SN 2011em based on the spectroscopic report below, is located at R.A. = 13:27:13.19, Decl. = +55:29:17.4 (equinox 2000.0), which is 11".2 east and 3".4 north of the center of NGC 5164. Nothing is visible at this position on the Digitized Sky Survey (limiting red mag 19 or fainter). Additional unfiltered CCD magnitudes for 2011em: 2011 June 28.647, [18.0 (Tsuboi); July 23.579, 17.8 (Tsuboi); Aug. 5.45, 16.0 (Koichi Itagaki, Teppo-cho, Yamagata, Japan; 0.60-m reflector; position end figures 13s.21, 17".4; communicated by Nakano); 6.483, 16.6 (Tsuboi); 7.133, 16.6 (Joseph Brimacombe, Cairns, Australia; position end figures 13s.25, 16".9); 8.493, 16.7 (Tsuboi). The discovery image was posted at URL http://www42.tok2.com/home/hiroten/astrophoto/NGC5164110804-01.jpg. Itagaki's image is posted at URL http://www.k-itagaki.jp/images/5164.jpg. Brimacombe's image is at http://www.flickr.com/photos/43846774@N02/6019928389/.