Possible Supernova PSN J21440852+4614511 in UGC 11804 Narrowfield L - May 15

Possible Supernova PSN J21440852+4614511 in UGC 11804 Narrowfield L - May 15, a photo by Joseph Brimacombe on Flickr.

Via Flickr:
SUMMARY
SN seen west of the nucleus at Mag 18.1 L
TECHNICAL INFORMATION
Total exposure 45 min (3 x 15 min, luminance filter; binned 2x2, scale 0.91 asec/px)
Time: 2012.5.15.454
Astrometry: RA 21 44 08.51 Dec 46 14 50.8
Photometry: 18.1 +/- 0.5 L
These data were collected remotely using a 51-cm
RCOS and STL11K camera at New Mexico Skies, Mayhill, New
Mexico by Joseph Brimacombe, Coral Towers Observatory,
Cairns, Australia.