[vsnet-alert 13629] Possible outburst of DDE 22 in Camelopardalis

Denis Denisenko d.v.denisenko at gmail.com
Wed Aug 31 15:49:49 JST 2011

New cataclysmic variable in Camelopardalis DDE 22 (USNO-B1.0
1597-0071405, 2MASS 04304278+6944281, GALEX J043042.9+694428) appears
to be going into outburst. Observations by Stas Korotkiy and Vladimir
Gerke with TAU station of Ka-Dar observatory have shown it brightened
by ~2 mags in last 2 nights.

  YYYYMMDD(UT)   mag  observer
  20110825.935  190C  TAU station
  20110827.889  201C  TAU station
  20110828.908  195C  TAU station
  20110829.745  184C  TAU station
  20110830.834  176C  TAU station

I request the confirmation of outburst, and should it be confirmed -
time-resolved photometry (if someone can do time series for an object
that faint). The maximum brighthness of star is perhaps 15.5-15.9.

Star has been added to AAVSO VSX as DDE 22 with AUID 000-BKD-609.

10'x9' color-combined DSS finder chart is available at

I was using 147 as comparison star and 166 as check star.

This would be the first observed outburst of this star since its
discovery a month ago. See arxiv:1108.5122 and
http://hea.iki.rssi.ru/~denis/VarDDE.html for more details.

Denis Denisenko

More information about the vsnet-alert mailing list