[vsnet-alert 15602] New bright CV in Hercules

[Denis Denisenko]

MASTER-Amur has detected new bright optical transient (14.2m) which is
identical to a previously unidentified EINSTEIN (HEAO 2) X-ray source
2E 1756.8+1451 (2E 3986). The discovery was just published in
Astronomer's Telegram ATel #4970,
<http://www.astronomerstelegram.org/?read=4970>.

MASTER OT J175908.60+145130.2 - new bright CV (outburst of 2E 1756.8+1451)
  20130314.853  171CR  MASTER-Tunka
  20130323.902  168CR  MASTER-Tunka
  20130411.726 14.27CR MASTER-Amur
  20130411.754 14.24CR MASTER-Amur

Previous outburst was observed 2 years ago:
  20110417.685 14.07CR MASTER-Amur
  20110417.721 14.15CR MASTER-Amur

Other IDs:
USNO-A2.0 0975-10134613 (17 59 08.66 +14 51 31.8 R=18.0 B=18.6)
USNO-B1.0 1048-0310652 (17 59 08.598 +14 51 31.17 pmRA=-14 pmDE=-10
B1=18.57 R1=17.16 B2=19.08 R2=17.49 I=17.00)
2MASS 17590860+1451309 (J=15.75+/-0.07, H=15.10+/-0.10, K=14.86+/-0.09)
GALEX J175908.5+145130 (FUV=19.66+/-0.16, NUV=20.18+/-0.16)

Color-combined (BRIR) finder chart (10'x10' FOV):
http://master.sai.msu.ru/static/OT/J175908+145130-BRIR.jpg

Discovery and reference images:
http://master.sai.msu.ru/static/OT/175908.60145130.2.png

Photometric time series are encouraged.

Denis Denisenko
Member of MASTER team at SAI MSU