Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J20451528-0537221

PSN J20451528-0537221   2012 08 13.24  *  20 45 15.28 -05 37 22.1  16.4 U    3E       I5050     D 0

2012 08 15.217

This possible supernova in IC 5050 was detected with 8 x 15 min images using a luminance filter Astrometry: RA 20 45 15.35 Dec -05 37 25.4 Photometry: 16.1 +/- 0.2 L These data were collected remotely by Joseph Brimacombe, Cairns, Australia. Link to image and further information http://www.flickr.com/photos/43846774@N02/7791806424/

2012 08 3.9423

Simone Leonini, Siena, Italy, report the pre-discovery by S. Leonini, P. Rosi and L.M. Tinjaca Ramirez of the PSN(mag. about +16.2CR)on unfiltered image taken on 2012 August 3.94236 UT (moon phase 96%, galaxy distant from the moon 29degrees) at the Montarrenti Observatory (C88) in the course of an automatic survey of the Italian Supernovae Search Project using a 0.53m f/8.7 RC + U47. Astrometry: R.A. 20h45m15.38s, Decl. -05degrees37arcmin25.1arcsec. No stellar source is visible in our past images including one on 2012 July 25. Pre-discovery image is posted at URL http://www.astrofilisenesi.it/public/Sne/Uploads/pre-discovery_PSNJ20451528-0537221_in_IC5050.jpg

2012 08 17.9187

Photometry: 15,40 +/-0.10 U. Astrometry: RA 20 45 15.33 Dec. -05 37 24.9 (equinox 2000.0). GiaGa Obs. Pogliano Milanese (MI) Italy (MPC 203). 0.28m f/6.8 Schmidt-Cassegrain + ST8XME, UCAC-3 reference stars, exp. 15 min (average of 10 images, each of 90 sec.). Observers S. Foglia, G. Galli

2012 08 15.9139

Mag.: 15.39CR +/-0.05 (USNO A2); Observers: S. Leonini, G. Guerrini, P. Rosi, L.M. Tinjaca Ramirez; Observatory: Montarrenti Observatory (C88), Siena, Italy, Telescope/Detector: RC 0.53m f/7.8 + U47