[vsnet-alert 21631] PNV J19321040-2052505: new transient (11.1 mag) in Sagittarius

[Patrick Schmeer pasc1312-aavso@yahoo.de via vsnet-alert]

PNV J19321040-2052505  (CV:)

RA 19h32m10.40s, DEC -20°52'50.5" (J2000.0) 
2017 11 27.3805 UT, 11.1 mag (CCD, unfiltered)
Discoverer: Hideo Nishimura (Shizuoka-ken, Japan)

2017 11 27.380 UT
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. An image at
http://www.oaa.gr.jp/~oaacs/image/PNinSgr2017.jpg

Follow-up reports:
http://tamkin1.eps.harvard.edu/unconf/followups/J19321040-2052505.html
------------------------------
ASAS-SN Sky Patrol observations
(Shappee et al., 2014ApJ...788...48S and
Kochanek et al., 2017PASP..129j4502K):
PNVJ19321040-2052505 20171112.018 <16.16V ASN
PNVJ19321040-2052505 20171113.016 <16.07V ASN

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.

Spectroscopy, precise astrometry, and time-
resolved photometry are urgently required.

Clear skies,
Patrick