Possible Supernova SNHunt138 in PGC 871419 Narrowfield L - July 21

Possible Supernova SNHunt138 in PGC 871419 Narrowfield L - July 21, a photo by Joseph Brimacombe on Flickr.

Via Flickr:
SUMMARY
Marginal detection. SN just seen.
DISCOVERY
Catalina Real-Time Transient Survey and Stan Howerton: 2012.6.17.400; Mag 20.0
TECHNICAL INFORMATION
Total exposure 105 min (7 x 15 min, luminance filter; binned 2x2, scale 0.91 asec/px)
Time: 2012.7.21.312
Astrometry: RA 19 56 46.72 Dec -18 11 40.8
Photometry: Not done.
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.