[vsnet-alert 25824] TCP J21551059+3337252: new SU UMa-type dwarf nova

Thu May 6 04:13:13 JST 2021

Dear colleagues,

I have just finished analysing my unfiltered CCD observations of TCP
J21551059+3337252, obtained on 2021, May 04/05 at CBA Extremadura
Observatory, using a 0.40-m f/5.1 telescope and SX-46 CCD camera under clear
skies. 

Regular superhumps with an amplitude of 0.10 mag are clearly visible in the
resulting light curve, establishing TCP J21551059+3337252 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 0.0734 +/- 0.0012d. The object was at mag V = 14.5 on
May 05th.

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

Best regards
Tonny

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Tonny Vanmunster
CBA Belgium Observatory
CBA Extremadura Observatory
http://www.cbabelgium.com

PERANSO : The Light Curve and Period Analysis Software
http://www.peranso.com