Possible Supernova PSN J23374574+1442371 in PGC 71942 Narrowfield L - June 17, 2013

Possible Supernova PSN J23374574+1442371 in PGC 71942 Narrowfield L - June 17, 2013, a photo by Joseph Brimacombe on Flickr.

Via Flickr:
SUMMARY
SN seen north-north-east of the nucleus at Mag 16.36 L. Brightened by 0.06 Mag in 24 hours.
DISCOVERY
Catalina Real-Time Transient Survey: 2013.6.14.450; Mag 16.2
TECHNICAL INFORMATION
Total exposure 15 min (30 x 0.5 min, luminance; binned 3x3, scale 1.37 asec/px)
Time: 2013.6.17.450
Astrometry: RA 23 37 45.79 Dec +14 42 36.9
Photometry: Mag 16.36 +/- 0.11 L (V for ref)
These data were collected remotely from New Mexico Skies, Mayhill, New Mexico, USA, by Joseph Brimacombe, Coral Towers Observatory, Cairns, Australia, using a 51-cm RCOS and STL11K camera.
FITS file available on request from jbrimaco@bigpond.net.au