Central Bureau for Astronomical Telegrams
CBAT "Transient Object Followup Reports"
PSN J02305204+2228459
PSN J02305204+2228459 2012 10 20.7422* 02 30 52.04 +22 28 45.9 16.7 U 20E 33N P9572 9 0
2012 10 20.742
V. Lipunov (SAI MSU) reports the discovery by S. Shurpakov of an apparent supernova (magnitude 16.7) from the unfiltered 60-sec exposure images obtained by MASTER-Amur robotic telescope (0.40-m f/2.5 + 4Kx4K CCD) on 2012 Oct. 20.711 and 20.742 UT. The new object is located at R.A. = 02h30m52s.04, Decl. = +22d28'45".9 (2000.0), which is 19".7 east and 33".2 north of the nucleus of the core of the likely host galaxy PGC 9572. We note, however, that there are two smaller galaxies which are closer to the possible supernova than PGC 9572 with their galoes overlapping, which makes the identification of true host problematic. Nothing is visible at the position of PSN on the color combined SDSS image of 2009 Jan. 11 to the limiting magnitude ~23 and on MASTER-Amur image of 2011 Sep. 06.723 UT (m_lim=18.8). The discovery and reference images are posted at this URL: http://master.sai.msu.ru/static/OT/023052.04222845.9.png
2012 10 23.1992
PSN detected at coordinates 02 30 52.09 +22 28 46.0 (UCAC3). Magnitude 17.2 U +/- 0.2. Limiting magnitude 19.5 . Sum of 10 x 120-sec images. Nothing visible at these coordinates on DSS. Observer: R. A. Koff, Antlelope Hills Observatory, Bennett, Colorado USA (H09) . Image posted at: http://antelopehillsobservatory.org/SNpictures/PSNJ02305204+2228459final.jpg
2012 10 23.11874
This object was observed by Federica Luppi and Luca Buzzi from Schiaparelli Observatory, Varese, Italy. In a stack of images totalling 5 minutes of unfiltered exposure time, the object has position end figures 52s.09, 46".3 and magnitude 17.3. Image posted at URL:http://www.astrogeo.va.it/pub/TOCP/PSN_P9572.jpg
2012 10 23.198
This possible supernova near PGC 9568/9572 was detected with 10 x 15 min images using a luminance filter Astrometry: RA 02 30 52.01 Dec 22 28 47.3 Photometry: 17.59 +/- 0.16 L These data were collected remotely by Joseph Brimacombe, Cairns, Australia. Link to image and further information http://www.flickr.com/photos/43846774@N02/8117697662/
