[vsnet-outburst 25783] MASTER OT J214912.70-195105.1: new WZ Sge-type dwarf nova

[Tonny Vanmunster tonny.vanmunster@gmail.com via vsnet-outburst]

Dear colleagues,

I just concluded analysing my unfiltered CCD observations of MASTER OT J214912.70-195105.1 otbained on 2020, Oct 02/03, at CBA Extremadura Observatory, using a 0.40-m f/5.1 telescope and SX-46 CCD camera under clear skies. 

The resulting light curve shows the presence of a double-waved superhump structure pointing to the WZ Sge-type nature of this dwarf nova. The superhumps have an amplitude of 0.13 mag. A period analysis using the ANOVA , Lomb-Scargle, Generalized-Lomb-Scargle and PDM methods (Peranso 3.0, in beta testing), yields a superhump period of 0.0582 +/- 0.0010d. The object was at mag 14.3 (CV) on Oct 03rd.

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

Follow-up observations are strongly recommended to analyse this system.

Best regards
Tonny

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Tonny Vanmunster
CBA Belgium Observatory
CBA Extremadura Observatory
www.cbabelgium.com
www.peranso.com