[vsnet-campaign-dn 15777] MGAB-V708: new SU UMa-type dwarf nova

[tonny.vanmunster@gmail.com via vsnet-campaign-dn]

Dear colleagues,

I have just finished analysing my unfiltered CCD observations of MGAB-V708,
obtained on 2021, June 15/16 at CBA Extremadura Observatory, using a 0.40-m
f/5.1 telescope and SX-46 CCD camera under clear skies. My observations were
triggered by Tadashi Kojima-san's observation reported in [vsnet-outburst
27358].

Regular superhumps with an amplitude of 0.22 mag are clearly visible in the
resulting light curve, establishing MGAB-V708 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 0.0602 +/- 0.0005d. The object was at mag CV = 15.0 on
June 16th.

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