Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J23355226+2336521

PSN J23355226+2336521   2015 04 25.7862*  23 35 52.26 +23 36 52.1  16.3 U    8E  15S  N7712     I 0

2015 04 25.786

Discovered by K. Itagaki, Yamagata, Japan, on an unfiltered CCD frame using 0.50-m f/6 reflector, who has confirmed on four followed-up frames after the discovery. Nothing is visible at this location on the past frames, but no recent frame. Verifying was done on a frame ( limiting mag.= 19.5) taken on 2006 August 3.591 UT using 0.60-m f/5.7 reflector at Yamagata. There is a discovery image at http://k-itagaki.jp/images/7712.jpg.

2015 04 26.755

Mag.= 16.0, position end figures 52s.21, 53".3 observed by T. Noguchi, Chiba-ken, Japan, using 0.23-m f/6.3 Schmidt Cassegrain + unfiltered CCD. A posted image at http://park8.wakwak.com/~ngc/images/PSNinNGC7712.jpg.

2015 04 27.804

This probable supernova in NGC 7712 was detected with 6 x 5 min images using a clear filter Photometry: Mag 16.48 +/- 0.07 C (V for ref; USNOA2) Astrometry: RA 23 35 52.26 Dec +23 36 52.6 These data were collected remotely by Joseph Brimacombe, Coral Towers Observatory, Cairns, Australia. Link to image and further information: https://www.flickr.com/photos/43846774@N02/17305785961/

2015 05 19.05986

This transient was observed on 2015 05 19.05986 by G. Masi, remotely using the 17"-f/6.8 robotic unit part of the Virtual Telescope Project facility, at Bellatrix Astronomical Observatory in Ceccano, Italy. 120-seconds exposures, unfiltered, show the source at mag. 17.3 (R mags for the reference stars from UCAC-4). We also performed astrometry, getting the following end figures: 52.24; 52.2 (J2000.0, mean residuals of 0.1" on both axes).