SIMBAD references

Giancarlo Cortini, Predappio, Italy, reports the discovery of an apparent supernova (mag 17.5) on several unfiltered CCD images (limiting mag about 19.0) taken with a Celestron C14 telescope (+ SXVRH9 camera) on Apr. 27.87 UT. The new object is located at R.A. = 5:28:17.95, Decl. = +76:39:55.9 (equinox 2000.0), which is 18" west and 6" north of the center of UGC 3302. Nothing is visible at this position on Palomar Sky Survey red and blue plates. The variable was designated PSN J05281795+7639559 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2012cb based on the spectroscopic confirmation reported below. Additional CCD magnitudes for 2012cb (unfiltered unless noted otherwise): Mar. 1.90 and 27.85, [19.0 (Cortini); Apr. 28.138, 18.0 (Joseph Brimacombe, Cairns, Australia; remotely using a 51-cm RCOS telescope + STL11K camera + luminance filter at the New Mexico Skies Observatory near Mayhill, NM, U.S.A.; position end figures 17s.71, 55".1; 29.142, 17.8 (L. Elenin, Lyubertsy, Russia, and I. Molotov, Moscow, Russia; remotely taken at ISON-NM Observatory near Mayhill, NM, USA, with a 0.45-m f/2.8 telescope; position end figures 18s.14 ± 0".1, 55".7 ± 0".09, NOMAD reference stars; limiting mag about 20.4; image posted at URL http://spaceobs.org/images/TOCP/PSNJ05281795+7639559-20120429.png); May 3.882, 18.1 (Federica Luppi and Luca Buzzi, Varese, Italy, 0.38-m f/6.8 reflector; position end figures 17s.78, 55".4; reference stars from PPMXL catalogue; image posted at http://www.astrogeo.va.it/pub/TOCP/PSN_U3302.jpg).