SN 2012ae , the SIMBAD biblio

T. Kryachko, S. Korotkiy, and B. Satovskiy, Astrotel Observatory, Kazan State University, report the discovery of an apparent supernova (mag approximately 18.4) on five unfiltered images (limiting mag 21.0) obtained on Feb. 13.76 UT with a Takahashi FRC-300 telescope (+ CCD Apogee Alta U9000 camera) at Karachay-Cherkessia, Russia. The new object is located at R.A. = 8:58:55.88 ± 0".1, Decl. = +23:03:42.4 ± 0".1 (equinox 2000.0), which is about 3".2 west and 1".3 north of the center of the galaxy SDSS J085856.01+230341.0. Nothing is visible at this position on a Palomar Sky Survey red plate from 1993 Mar. 22 (via the Digitized Sky Survey; limiting mag 21.0) or on a Sloan Digital Sky Survey image (date, bandpass, limiting magnitude not specified). The variable was designated PSN J08585588+2303424 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2012ae based on the spectroscopic confirmation reported below. Paolo Corelli, Pagnacco, Italy, writes that four co-added unfiltered CCD frames (limiting mag 19.8) taken with a 0.45-m f/4.5 telescope around Feb. 17.916 show 2012ae at mag 18.5 and position end figures 55s.91, 42"; on the red Palomar Sky Survey plate with limiting mag 21.5, a galaxy of mag 19.5 is visible at this position.

L. Tomasella, S. Valenti, A. Pastorello, and S. Benetti, Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Padova, report that a spectrogram of PSN J08585588+2303424 = SN 2012ae, obtained on Feb. 18.89 UT with the 1.82-m Copernico Telescope (+ AFOSC; range 340-790 nm, resolution 2.2 nm), indicates that it is a type-Ia supernova. Cross-correlation with a library of supernova spectra via the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows that it is similar to several type-Ia supernovae around maximum.