[vsnet-alert 25759] CSS 111019:162210+360419: new SU UMa-type dwarf nova

tonny.vanmunster@gmail.com via vsnet-alert vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp
Sat Apr 24 04:50:42 JST 2021

Dear colleagues,

I have just finished analysing my unfiltered CCD observations of CSS
111019:162210+360419 (aka SDSS J162209.64+360418.0), obtained on 2021, Apr
22/23 at CBA Belgium Observatory, using a 0.40-m f/10.0 telescope and
QHY268M CMOS camera under clear skies. 

Regular superhumps with an amplitude of 0.20 mag are clearly visible in the
resulting light curve, establishing CSS 111019:162210+360419 as a new SU
UMa-type dwarf nova. A period analysis using the ANOVA, Lomb-Scargle,
Generalized-Lomb-Scargle and PDM methods (Peranso 3.0), yields a combined
superhump period of 0.0601 +/- 0.0008d. The object was at mag V = 15.5 on
Apr 22nd.

I will send my observations to AAVSO, CBA and VSNET for further analysis.

Best regards


Tonny Vanmunster
CBA Belgium Observatory
CBA Extremadura Observatory

PERANSO : The Light Curve and Period Analysis Software

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