[vsnet-alert 18215] PNV J17500288+2022264: new transient in Hercules

[Patrick Schmeer]

PNV J17500288+2022264

R.A. 17h50m02.88s  Decl. +20°22'26.4"  (J2000.0)
2015 Jan. 23.848 UT, 12.2 mag (CCD, unfiltered)

http://www.cbat.eps.harvard.edu/unconf/followups/J17500288+2022264.html

"2015 01 23.848
Discovered by Hideo Nishimura, Shizuoka-ken, Japan,
on four 30-s frames (limiting mag.= about 14) using
200-mm f/3.2 lens + a digital camera, who writes
nothing is visible at this location on his past Frame
taken on 2015 Jan. 15.853 UT using same patrol camera." 

"2015 01 23.779
Koichi Itagaki , 2015 01 23.779 = Mag:13.6 180-mm lens
+ CCD Camera KAF-1001E."
-----------------------------------

CV candidate with large outburst amplitude

Possible identifications:
- GALEX J175002.8+202224 (17 50 02.866 +20 22 24.23)
NUV= 21.269 mag
- USNO-B1.0 1103-0313085 (17 50 02.838 +20 22 24.66)
B1= 20.40, B2= 20.42, R2= 18.52 mag
- GSC2.3 N3UQ004644 (17 50 02.818 +20 22 24.32)
F= 19.94, j= 20.78 mag
- AllWISE J175002.95+202225.2 (17 50 02.952 +20 22 25.27)
W1= 17.628 mag

Spectroscopy and time-resolved photometry is recommended.

Clear skies,
Patrick