[vsnet-alert 16091] ASASSN-13bs

[Denis Denisenko]

On Thu, Aug 1, 2013 at 8:48 PM, Krzysztof (Kris) Stanek
<kstanek at astronomy.ohio-state.edu> wrote:
>
> Object                   RA (J2000)    DEC (J2000)  Disc. Date       V mag
> -----------------------------------------------------------------------------
> ASASSN-13bs               18:30:8.84    37:36:41.6   2013-08-1.37     14.89
> ----------------------------------------------------------------------------
>
> ASASSN-13bs matches to a blue USNO B=16.15 star, so at this point it is a
> weak outburst;

This object was in outburst on 1993-05-30 Palomar red plate and is
included into USNO-B1.0 ctalogue with R2=14.65:

USNO-B1.0 1276-0354983
18 30 08.833 +37 36 41.77 pmRA=-8 pmDE=20 B1=16.15 R1=16.87 B2=17.51
R2=14.65 I=17.47

MASTER-Amur has observed it in bright state on 2013 Feb. 22:

ASASSN-13bs = 2MASS 18300884+3736415
  20130207.835   165C   MASTER-Amur
  20130207.867   176C   MASTER-Amur
  20130222.823  14.09C  MASTER-Amur
  20130222.855  13.95C  MASTER-Amur

Since the MASTER unfiltered magnitudes are compared to the linear
combination of USNO R2 and B2 mags, this object has never satisfied
the transient detection criterion.

Denis Denisenko
Member of MASTER team at SAI MSU