[vsnet-alert 14643] Re: possible new CV

[Denis Denisenko]

Dear all,

I can confirm that this star went into outburst sometime between 2012
April 10 and 2012 May 13. The star was yet brighter by 1.2 mag two
weeks before the discovery image by MISAO project. I also note this
star is identical to 2MASS 19591944+5625208 (J=15.359+/-0.048,
H=14.859+/-0.081, K=14.676+/-0.102). Unfortunately it is just 1'
outside the GALEX coverage, so no info on the possible UV counterpart
is available.

Archival photometry by MASTER robotic telescopes is listed below.
Errors of quiescent magnitudes are typically 0.1m. Please note the
simultaneous observations in two filters by MASTER-Tunka on 2011 Sep.
08. The star had the color index (B-R) of 1.2+/-0.1.

Denis Denisenko on behalf of the MASTER team (Lipunov et al., 2010)

YYYYMMDD.DDD  mag    Observer
--------------------------------------
20100401.784  17.0C  MASTER-Amur
20100422.008  17.1R  MASTER-Kislovodsk
20100422.008  17.3V  MASTER-Kislovodsk
20100422.040  17.2V  MASTER-Kislovodsk
20100422.040  17.1R  MASTER-Kislovodsk
20100821.625  17.1C  MASTER-Tunka
20100830.744  17.4C  MASTER-Tunka
20100830.775  17.1C  MASTER-Tunka
20110119.412  17.4V  MASTER-Amur
20110119.446  17.0V  MASTER-Amur
20110119.446  17.4R  MASTER-Amur
20110128.863  17.7C  MASTER-Amur
20110128.864  16.9R  MASTER-Amur
20110128.896  17.2C  MASTER-Amur
20110128.897  16.9R  MASTER-Amur
20110513.807  17.2C  MASTER-Tunka
20110514.805  16.9C  MASTER-Tunka
20110515.654  17.1C  MASTER-Tunka
20110515.693  17.2C  MASTER-Tunka
20110517.716  17.1C  MASTER-Tunka
20110517.796  17.0C  MASTER-Tunka
20110612.694  16.8C  MASTER-Amur
20110612.725  16.7C  MASTER-Amur
20110816.679  16.9C  MASTER-Tunka
20110816.711  16.8C  MASTER-Tunka
20110901.600  16.9R  MASTER-Amur
20110908.482  16.8C  MASTER-Amur
20110908.484  17.0C  MASTER-Amur
20110908.558  17.2C  MASTER-Tunka
20110908.573  17.0C  MASTER-Tunka
20110908.613  17.3R  MASTER-Tunka
20110908.613  18.4B  MASTER-Tunka
20110908.615  17.3R  MASTER-Tunka
20110908.615  18.6B  MASTER-Tunka
20111028.655  17.1V  MASTER-Amur
20111028.686  17.0V  MASTER-Amur
20111201.475  17.0C  MASTER-Tunka
20111201.478  17.0C  MASTER-Tunka
20111201.480  16.9C  MASTER-Tunka
20111201.483  16.9C  MASTER-Tunka
20120104.434  17.1V  MASTER-Amur
20120405.861  16.9C  MASTER-Tunka
20120410.704  16.7C  MASTER-Amur
20120410.755  17.0C  MASTER-Amur
20120513.651  12.15C MASTER-Amur
20120513.683  12.14C MASTER-Amur

On Fri, Jun 8, 2012 at 2:12 PM, Seiichi Yoshida <comet at aerith.net> wrote:

> Dear colleagues,
>
> We discovered a possible new object from Youichirou Nakashima's survey
> images in the course of the MISAO Project. It was bright at 13.4 mag
> on May 27, but nothing found in our past images.
>
> Unfortunately, the outburst was on May 27, about 2 weeks ago. I hope
> someone can confirm this object.
>
> MPRE 2012-0152
>  R.A.  19h59m19s.44
>  Decl. +56o25'20".7  (2000.0)
>  Mag.  13.3-<16.6C
>  Type  CV?
> = USNO-A2.0 1425.10173307  19h59m19s.449 +56o25'21".10  Mag(R):16.8  Mag(B):17.7