[vsnet-alert 20647] PNV J16521887-3754189: new transient (12 mag) in Scorpius

[Patrick Schmeer]

PNV J16521887-3754189  (CV:)

Discoverer: Hideo Nishimura (Shizuoka-ken, Japan)

R.A. 16h52m18.87s  Decl. -37°54'18.9"  (J2000.0)
2017 Feb. 1.862 UT, 11.7 mag (CCD, unfiltered)

Discovered by H. Nishimura, Shizuoka-ken, Japan,
on three 10-s frames using 200-mm f/3.2 lens +
a Canon digital camera, who writes nothing is
visible at this location on his frames taken
before 2017 Jan. 25.872 UT, but he found a star
(mag.= 12.5) on 2017 Jan. 30.868, mag.= 12.1 on
Feb. 2.857 and mag.= 12.7 on Feb. 6.836 UT.
Note a red star within several arc seconds.
Also Kaneko reports mag.= 12.1 (R 11.4, V 13.3,
B 15.2) on 2017 Feb. 6.68 UT. 

http://www.cbat.eps.harvard.edu/unconf/followups/J16521887-3754189.html

This transient is only 6.7' north of mu2 Scorpii
(V= 3.6 mag).

Spectroscopy and time-resolved photometry are
urgently required.

Clear skies,
Patrick