Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PNV J17184504-2454221

PNV J17184504-2454221   2017 11 11.3736*  17 18 45.04 -24 54 22.1   9.4 U             Oph       1 0

2017 11 11.374

Discovered by S. Kaneko, Kakegawa, Shizuoka-ken, Japan, with on 4-s exposure on four frames using Canon 6D digital camera + f/3.2 200-mm lens under the limiting mag = 13.2, who gives mag= 9.4 on Nov. 375 UT and writes that nothing is visible at this location on a frame taken on November 4 UT.

2017 11 11.78

Three Gaia DR1 sources (all of 20 mag) are within 6" of the reported position of this transient. --- Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)

2017 11 12.356

Mag.= 9.8, position end figures 45s.01, 21".8 observed by T. Noguchi, Chiba-ken, Japan, using 0.23-m f/10 Schmidt Cassegrain + unfiltered CCD. An image at http://park8.wakwak.com/~ngc/images/PNVinOph_20171112.jpg.

2017 11 12.43

A Gaia DR1 source (G= 20.3 mag; position end figures 45.07s, 23.3") is 1.7" from the position reported by Noguchi-san. --- Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)

2017 11 12.3465

Photometry results were V=9.39, Rc=8.86 and Ic=8.02 with 0.25m SCT + Apogee Alta F47 CCD at Kamagaya, Japan. This object was very low in the sky at my observation site and comparison star was very red in color. Thus this photometry results might have large systematic error. Seiichiro Kiyota