[vsnet-alert 19108] OT J202225.09+500457.4: new SU UMa-type dwarf nova

[Tonny Vanmunster]

Dear colleagues,
 
Last 2 nights (2015, Sep 30/Oct 01 and Oct 01/02), I have been doing unfiltered CCD photometry of OT J202225.09+500457.4. Observations were made at CBA Belgium Observatory,  using a 0.35-m f/6.3 telescope and STT-3200ME CCD camera, under very clear skies with moderate moonlight. The resulting combined light curve clearly shows the presence of superhumps, establishing this target as a new SU UMa-type dwarf nova. The amplitude is approx 0.32 mag. A period analysis using the ANOVA, Lomb-Scargle and PDM methods (Peranso), yields a combined period of 0.0824 +/- 0.0003d. 

Further observations are evidently encouraged.

Observations will be sent to CBA and VSNET for further analysis.

Best regards
Tonny 

 <http://www.cbabelgium.com> www.cbabelgium.com
 <http://www.peranso.com> www.peranso.com