Central Bureau Electronic Telegrams, 2789, 1 (2011/August-0)
PSN J12304185+4137498 in NGC 4490.
CORTINI G., BORKOVITS T., SZAKATS R. and BRIMACOMBE J.
Abstract (from CDS):
Giancarlo Cortini and Stefano Antonellini, Predappio, Italy, report their discovery of an apparent supernova (mag 16.7) on several unfiltered CCD frames (limiting mag about 18.0) taken around Aug. 16.83 UT. The new object is located at R.A. = 12:30:41.85, Decl. = +41:37:49.8 (equinox 2000.0), which is 57" east and 37" south of the center of NGC 4490. Nothing is visible at this position on their previous images taken of this galaxy or on Palomar Sky Survey red and blue plates (no dates or limiting magnitudes provided). The variable was designated PSN J12304185+4137498 when posted on the Central Bureau's TOCP webpage. Additional unfiltered CCD magnitudes reported for 2011fd: Aug. 17.80, 17.5 (T. Borkovits and R. Szakats, Baja Observatory, Hungary; three stacked 60-s images taken with the BART telescope; image posted at URL http://titan.physx.u-szeged.hu/~sn/psn_j12304185+4137498_bajaobs.jpg); 20.168, 16.8 (Joseph Brimacombe, Cairns, Australia; position end figures 41s.87, 49".3; image at http://www.flickr.com/photos/43846774@N02/6062934887/).