Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

CBAT "Transient Object Followup Reports"

PNV J20422233+2712111

PNV J20422233+2712111   2017 04 13.736 *  20 42 22.33 +27 12 11.1  11.1 U             Vul       9 0



2017 04 13.736

Discovered by H. Nishimura, Kakegawa, Shizuoka-ken, Japan, using Canon EOS 5D digital camera + 200-mm f/3.2 lens. Independent discoveries by T, Kojima (April. 13.743 UT, mag.= 10.5), Gunma-ken, Japan and by S. Kaneko (April 13.754 UT, mag.= 11.1), Kakegawa, Shizuoka-ken, Japan. Nishimura writes discovered from three flames, nothing is visible two recent frames taken on 2017 April 3.749 and 11.740 UT (limitting mag.= 13). Kaneko writes discovered from three flames, nothing is visible a recent frame taken on 2017 April 4.779 UT limitting mag.= 13.5). Kaneko writes discovered from four flames, nothing is visible a recent frame taken on 2017 April 11.7 UT (limitting mag.= 14.8).




2017 04 13.85

The UV source GALEX J204222.4+271210/J204222.5+271211 (NUV= 20 mag) is within 2" of the reported position of the transient. This UV source is probably identical with the blue object SDSS J204222.39+271210.9 (SDSS DR7: g= 20.01, r= 20.12, u= 20.21, i= 20.19 mag; Gaia DR1: G= 20.09 mag). Several other optical sources are within few arcseconds of the reported position of the transient. --- Patrick Schmeer (Saarbr├╝cken-Bischmisheim, Germany)




2017 04 13.736

Discovery images by Nishimura and Kojima are put at http://www.oaa.gr.jp/~oaacs/image/PNinVul2017.jpg. Correction: on the previous message for the first Kaneko, read Kojima.




2017 04 13.773

Mag.= 11.1, Independent discovery by Y. Sakurai, Ibaraki-ken, Japan, using Nikon D700 + 180-mm lens.




2017 04 13.786

Kaneko reports his photometric magnitudes after discovery, 2017 April 13.754, 11.2; 13.755, 11.1; 13.785, 11.2; 13.785, 11.1; 13.754, 11.1; 13.755, 11.4; 13.786, 11.3; 13.786, 11.3.




2017 04 12.828

No object brighter than about 12.5 mag was detected one day before at the reported position. My image taken with 100 mm lens is here : https://sites.google.com/site/akitakao001/home. Akira TAKAO (Kitakyushu, Japan )




2017 04 14.4709

Photometry results were B=11.72, V=11.91, Rc=12.00 and Ic=12.18 with 0.43-m f/4.5 CDK Astrograph + FLI-PL6303E CCD (T21, iTelescope.NET) at Mayhill, NM, USA. It has rather blue color. So it might be dwarf nova. My image is available at http://meineko.sakura.ne.jp/ccd/PNV_J20422233+2712111.jpg. Seiichiro Kiyota (Kamagaya, Japan)




2017 04 13.712

Itagaki, Yamagata, reports his observation mag= 11.8 on 2017 Apr. 13.712 UT, position 20h 42m 22s.34, +27 12' 12.9.




2017 04 14.462

K. Yoshimoto, Yamaguchi, reports his observation using 0.25-m f/3.4 Mayhill telescope remotely, mag. B=11.91, V=11.96, I=12.07, position 20h 42m 22s.42, +27 12' 11".2. Image at http://orange.zero.jp/k-yoshimoto/PNV-J20422233+2712111.jpg.




2017 04 14.716

Mag.= 12.3 observed by T. Noguchi, Chiba-ken, Japan, using 0.23-m f/6.3 Schmidt Cassegrain + unfiltered CCD. Image at http://park8.wakwak.com/~ngc/images/PNVinVul.jpg.



Valid HTML 4.01!