Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J18501129+3020595

PSN J18501129+3020595   2013 03 19.7762*  18 50 11.29 +30 20 59.5  16.9 U   12W  15S  P2813322  9 0

2013 03 19.7762

V. Lipunov (SAI MSU) reports the discovery by S. Shurpakov of a possible supernova (mag. 16.9) on two unfiltered survey images (limiting mag 18.2) taken on Mar. 19.748 and 19.776 UT with the MASTER-Amur robotic telescope (0.40-m f/2.5 reflector + 4Kx4K CCD). The new object is located at R.A. = 18h50m11s.29, Decl. = +30o20'59".5 (equinox 2000.0), which is 11.9" west and 15.1" south of the nucleus of PGC 2813322 galaxy. D. Denisenko and E. Gorbovskoy (SAI MSU) report that nothing is visible at this position on Feb. 24.860 UT images from the same telescope to the magnitude limit 18.0. The discovery and reference images are posted at the following website URL: http://master.sai.msu.ru/static/OT/185011.29302059.5.png and color-combined DSS finder chart (5'x5' FOV, 200% zoom) - at http://master.sai.msu.ru/static/OT/J185011+302059-BRIR5x5.jpg (see also ATel #4900).

2013 03 21.14375

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 11s.23, 59".7 and magnitude 17.5. Image posted at URL http://www.astrogeo.va.it/pub/TOCP/PSN_P2813322.jpg

2013 03 24.416

This possible supernova in PGC 2813322 was detected with 3 x 15 min images using a luminance filter Astrometry: RA 18 50 11.23 Dec +30 20 59.3 Photometry: 17.32 +/- 0.09 L (V for ref) These data were collected remotely by Joseph Brimacombe, Cairns, Australia. Link to image and further information: http://www.flickr.com/photos/43846774@N02/8589123510/