[vsnet-alert 16576] UGSU candidate MASTER OT J234843.23+250250.4 (14.4m)

Denis Denisenko d.v.denisenko at gmail.com
Tue Oct 29 23:59:58 JST 2013

New relatively bright CV in Pegasus was found in MASTER-Amur database.
It is published in Astronomer's Telegram ATel #5526, see

MASTER OT J234843.23+250250.4
  20131029.397  14.50  MASTER-Amur
  20131029.398  14.44  MASTER-Amur
  20131029.399  14.51  MASTER-Amur
  20131029.402  14.48  MASTER-Amur
  20131029.430  14.53  MASTER-Amur
  20131029.431  14.48  MASTER-Amur
  20131029.432  14.55  MASTER-Amur

Discovery and reference images:

The OT at quiescence is identical to the faint blue star:
SDSS J234843.14+250249.9 (u=20.19 g=20.24 r=20.34 i=20.32 z=20.03)
USNO-B1.0 1150-0578157 (B1=19.89 R1=N/A B2=20.28 R2=20.31 I=N/A).
It was in outburst on the Quick-V Palomar plate taken on 1983 Oct. 11,
hence the following GSC 2.3.2 magnitudes: Fmag=20.09, jmag=20.07,
UV counterpart: GALEX J234843.1+250251 (FUV=20.56+/-0.22, NUV=20.46+/-0.13)

There are five previous outbursts in Catalina Real-time Transient
Survey data: on 2006 June 16 to 16.8m, 2008 Nov. 07 (16.0m), 2009 Aug.
01 (17.6m), 2012 Aug. 28 (16.9m) and 2012 Oct. 21 (15.8m). Current
outburst appears to be a superoutburst. SDSS colors suggest a short
orbital period. Time-resolved photometry is strongly encouraged.

Denis Denisenko
Member of MASTER team at SAI MSU

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