PNV J19321040-2052505 2017 11 27.3805* 19 32 10.40 -20 52 50.5 11.1 U Sgr 9 0
2017 11 27.380
Discovered by H. Nishimura, Shizuoka-ken, Japan, with on 10-s exposure on three frames using Canon EOS 6D digital camera + f/3.2 200-mm lens under the limiting mag = 13s, who writes that nothing is visible at this location on a frame taken on 2017 Nov. 24.392 UT. There is a faint star (mag.= 17.8) at end figures 10s.44, 54".1 on USNO-A2 catalog.
2017 11 27.380
An image at http://www.oaa.gr.jp/~oaacs/image/PNinSgr2017.jpg.
2017 11 27.64
A Gaia DR1 source (position end figures 10.37s, 49.5"; G= 19.13 mag) with the following designations is 1" from the reported position of the transient: USNO-B1.0 0691-0831153 (not in USNO-A2.0), GSC2.3 SA2T014548. --- Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)
2017 11 28.040
Mag. B= 11.52, V= 11.49, position end figures 10s.37, 49".7 observed by K. Yoshimoto, Yamaguchi-ken, Japan, using 0.25-m f/3.4 Mayhill telescope, remotely. An image at http://orange.zero.jp/k-yoshimoto/PNV-J19321040-2052505.jpg.