Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J00563965-0954028

PSN J00563965-0954028   2014 12 13.4943*  00 56 39.65 -09 54 02.8  17.9 U   44W  47N  N309      I 0

2014 12 13.519

Discovered by K. Itagaki, Yamagata, Japan, on an unfiltered CCD frame using 0.50-m f/6.8 reflector remotely at Takanezawa, Tochigi-ken, which was confirmed on ten followed-up frames taken before and after the discovery. Nothing is visible at this location on the past frames including the most recent frame taken on 2014 Nov. 22.489 (limiting mag.= 18.5) and verifying was done on a frame (limiting mag.= 19.0) taken on 2006 August 30.654 UT using 0.60-m f/5.7 reflector at Yamagata. Also the discovery image was posted at http://k-itagaki.jp/images/309.jpg.

2014 12 13.585

Mag.= 18.2, position end figures 39s.67, 03".3 observed by T. Noguchi, Chiba-ken, Japan, using 0.23-m f/6.3 Schmidt Cassegrain + unfiltered CCD. See an image at http://park8.wakwak.com/~ngc/images/PSNinNGC309.jpg.

2014 12 14.46827

Mag.=17.9U, position end figures 39s.63, 02".6, on an image taken by 180-second exposure under the limiting magnitude = 18.5, using a 0.30-m f/7.0 Cassegrain + CCD (SBIG STL-1001E) at Osaki Lifelong Learning Center. Observer T. Yusa and N. Wada, Osaki, Japan. An image was posted at URL http://space.geocities.jp/yusastar77/supernova/PSNinNGC309_141214.htm

2014 12 14.4319

Photometry results were V=17.74 and Ic=17.40. Instruments are 0.5m CDK astrograph + FLI PL-9000 CCD camera at Siding Spring site of iTelescope.NET, remotely. Seiichiro Kiyota (Kamagaya, Japan)

2014 12 17.88814

This transient was observed on 2014 12 17.88814 by G. Masi and P. Catalano, 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. 18.0 (R mags for the reference stars from UCAC-4). We also performed astrometry, getting the following end figures: 39.65; 03.6 (J2000.0, mean residuals of 0.2" on both axes).

2014 12 20.1542

This transient was observed at mag.+17,9 on 2014 12 20.1542 by A. Valvasori and F. Briganti, remotely using the iTelescope T21 Dall-Kirkham 431mm F/4.5, at Mayhill - New Mexico and 2x180seconds exposures, unfiltered, in the course of Italian Supernovae Search Project.

2014 12 18.5207

F. Watanabe (Nayoro Observatory, Nayoro, Japan) performed a follow-up observation for PSN J00563965-0954028 using a 0.50-m f/9.5 reflector and an unfiltered CCD camera (SBIG STL-1001E) on Dec. 18.52073 (UT). A combined image (30 sec x 36 frames) shows this transient was observed at the magnitude of 17.9 mag (R mags for the reference stars from the UCAC4 catalog), providing position end figures 39s.68; 02".5 (J2000.0, mean residuals of 0".3 on both axes).