Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J12095569+2953513

PSN J12095569+2953513   2013 12 10.8324*  12 09 55.69 +29 53 51.3  16.9 U    2W   8S            I 0

2013 12 10.832

Image = http://www.k-itagaki.jp/images/4136.jpg

2013 12 10.832

Discovered by K. Itagaki, Yamagata, Japan, in a small anonymous galaxy using 0.50-m f/6.8 reflector remotely at Takanezawa, Tochigi-ken, under the limiting magnitude= 18.5, who writes nothing is visible at this location on his past frames including the most recent frame taken on 2013 Nov. 26.793 UT (limiting mag.= 18.0) and verifying was done for a frame (limit mag.=19.5) on 2011 Mar. 31.651 with 0.60-m f/5.7 reflector at Yamagata. The host galaxy has been cataloged as a fixed star but this seems to be a small elliptical galaxy.

2013 11 11.1217

I took conformation images of this PSN with 0.32-m f/8.0 astrograph + FLI KAF-6303E CCD (T18, iTelescope.NET) at Nerpio, Spain remotely, 300 sec exposures, V or Luminance filters. Photometric result was V=16.94.My image is available at http://meineko.sakura.ne.jp/ccd/PSN_J12095569+2953513.jpg.

2013 12 11.44473

Mag.=16.7, R.A.=12 09 55.71 Decl=+29 53 50.9 (UCAC4), remotely using a 0.25-m f/3.4 hyperbolic astrograph + unfiltered CCD (SBIG ST-10XME) at the RAS Observatory near Mayhill, NM, U.S.A.. Position and magnitude were measured on an image composed from 3-frames which were taken by each 180-seconds exposure under the limiting magnitude = 18.5. Observer T. Yusa, Osaki, Japan. Link to my image: http://space.geocities.jp/yusastar77/supernova/PSN_131211.htm

2013 12 11.1681

This transient was observed on 2013 December 11.1681 by Fabio Martinelli - Astronomical Centre - Montecatini Val di Cecina - Italy, in the course of the Italian Supernovae Search Project, using Cassegrain telescope 16" + ccd KAF1000 and 40 seconds exposure, unfiltered, show the source at mag. +16.9

2013 12 11.641

Mag.= 17.0, position end figures 55s.71, 51".3 observed by T. Noguchi, Chiba-ken, Japan, from an eight stacked 30-s exposures (limit mag.= 18.5) using 0.23-m f/6.3 Schmidt-Cassegrain + unfiltered CCD. Position and magnitude were measured from UCAC4. An image posted at http://park8.wakwak.com/~ngc/images/PSN_N4136.jpg.

2013 12 11.1681

The observation made by Fabio Martinelli on 2013 December 11.1681 isn't refer to this supernova, but it's refer to supernova J12530627+3649001.

2013 12 12.8

K. Ayani, Bisei Astronomical Observatory (BAO), Ibara, Okayama, Japan, obtained a low-resolution spectrogram (range 400 - 800 nm, resolution 0.6 nm at H-alpha) of PSN J12095569+2953513 with the BAO 1.01-m telescope on Dec. 12.8 UT. The spectrum is that of a type-Ia supernova around or several days before maximum. Cross-correlation with a library of supernova spectra using the "SuperNova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows that it matches with SN 2002he at 8 days before maximum.

2013 12 14.1784

Mag.: 16.0(V) R.A.: 12 09 55.70; Decl.: +29 53 50.8 (2000.0). Reference: PPMXL Observer: Massimiliano Martignoni - Observatory: Stazione Astronomica Betelgeuse (B75), Magnago, Italy Telescope: Schmidt-Cassegrain 0.25m-f/10.0 - CCD: KAF0261E