[vsnet-alert 23548] ASASSN-19vr: new SU UMa-type dwarf nova

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

Dear colleagues,

I have just concluded the analysis of my 2019, Sep 09/10 unfiltered CCD
photometry session of ASASSN-19vr. Observations were made at CBA Belgium
Observatory, using a 0.40-m f/10.0 telescope and STT-3200ME CCD camera,
under clear skies.

The resulting light curve clearly shows the presence of superhumps with an
amplitude of 0.20 mag, hence establishing ASASSN-19vr as a new SU UMa-type
dwarf nova. A period analysis using the ANOVA, Lomb-Scargle and PDM methods
(Peranso),  yields a combined superhump period of 0.0601 +/- 0.0005d. The
object was at mag 15.9 (CV) on Sep 10th.

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

Follow-up observations are recommended to further refine the superhump
period.

Best regards
Tonny

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