Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J12265018+1615496

PSN J12265018+1615496   2015 12 07.8469*  12 26 50.18 +16 15 49.6  18.7 U    0W  29S            I 0

2015 12 07.847

Discovered by K. Itagaki, Yamagata, Japan on an unfiltered CCD frame taken using 0.60-m f/5.7 reflector, who posted a discovery image at http://k-itagaki.jp/images/an.jpg.

2015 12 08.7792

I made a confirming observation of this PSN. Its magnitude is estimated as U18.9 by Astrometrica(USNO-(S)A 2.0). Using telescope is 45cm F4.6 Reflector + unfiltered CCD FLI ML-8300, 2 bin, 60s exposure. Position end is R.A.=50.16s, Dec=49.5". Observed by Kunihiro Shima at Fujimi-machi, Nagano, Japan.

2015 12 08.747

Mag.= 18.8, position end figures 50s.15, 49".4 observed by T. Noguchi, Chiba-ken, Japan using 0.23-m f/6.3 Schmidt Cassegrain + unfiltered CCD. An image posted at http://park8.wakwak.com/~ngc/images/PSNanon.jpg.

2015 12 12.220

This transient was observed on 2015 12 12.22058 by G. Masi, remotely using the 17"-f/6.8 robotic unit at Bellatrix Astronomical Observatory in Ceccano, Italy. 120-seconds exposures, unfiltered, show the source at mag. 18.7 (R mags for the reference stars from UCAC-4). We also performed astrometry, getting the following end figures: 50.21; 48.6 (J2000.0, mean residuals of 0.2" on both axes).