[vsnet-alert 10872] OT_J071126.0+440405 period improvement

[Denis Denisenko]

I have obtained another series of observations of J0711+4404 between
Jan. 01 19:03 UT and Jan. 02 00:03 UT. The light curve for this night
is available at http://pics.livejournal.com/bigdenru/pic/0005aqsy/
The second eclipse was unfortunately missed due to re-pointing the
telescope during meridian transit.

Non-folded light curve from the last night (2008 Dec. 31 UT) for comparison:
http://pics.livejournal.com/bigdenru/pic/00059s0p/

There appear to be changes in the "flat" part of the curve from one
orbit to another. The similar behaviour was observed in another
eclipsing polar J0209+2832. A very prominent feature in J0711+4404's
light curve is the dip about 1m at the orbital phase 0.87 (15 minutes
before the mid-eclipse) similar to that of J0155+0028. The orbital
inclination must be very close to 90 deg.

The improved value of period based on two nights is 0.08141(4)d, or
117.23+/-0.05 min.

Denis on Caucasus