[vsnet-alert 16708] CRTS OT J103317.3+072119 outburst

Denis Denisenko d.v.denisenko at gmail.com
Thu Dec 12 14:28:49 JST 2013

This dwarf nova in Leo aka CSS 080208:103317+072119 is in outburst on
MASTER-Tunka images:

CRTS OT J103317.3+072119
  20131211.8064  14.40C  MASTER-Tunka
  20131211.8077  14.46C  MASTER-Tunka
  20131211.8103  14.46C  MASTER-Tunka
  20131211.8424  14.54C  MASTER-Tunka
  20131211.8441  14.58C  MASTER-Tunka
  20131211.8456  14.56C  MASTER-Tunka

Internal photometric errors are 0.02m.

I also note the "godfather" of this CV (i.e., Catalina Sky Survey
itself) has detected an outburst on the same day as MASTER-Tunka, but
a few hours earlier. See the light curve online at

The variable at quiescence is identical to the star SDSS
J103317.27+072118.5 (u=19.94 g=19.89 r=19.81 i=19.75 z=19.48).
According to the paper by Taichi Kato et al., 2012, the estimated
orbital period is 0.072d with a 94% probability of the variable being

Denis Denisenko
Member of MASTER team at SAI MSU

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