[vsnet-alert 15146] CSS 111118:051923+155435 outburst

[Denis Denisenko]

MASTER-Amur robotic telescope has detected the outburst of Catalina
transient CSS 111118:051923+155435 (dwarf nova with magnitude range
14.2-17.8) on two survey images:

CSS 111118:051923+155435
  20121206.701  147C  MASTER-Amur
  20121206.732  145C  MASTER-Amur

The variable is identical to SDSS star SDSS J051922.90+155434.9
(u=18.00 g=18.12 r=17.62 i=17.38 z=17.15).
Orbital period is 0.0849d, or 122.3(4) min according to Thorstensen
and Skinner, AJ 144, 81, 2012 (arXiv:1207.3070).

The object is located within the error circle (formally at 15") of the
faint ROSAT X-ray source 1RXS J051922.6+155421 (error radius 20",
flux=0.0176+/-0.0078 cnts/sec, HR1=1.00+/-0.31, HR2=0.37+/-0.40).

Denis Denisenko