[vsnet-alert 21707] ASASSN-17qh: new SU UMa type dwarf nova - period refinement

[Tonny Vanmunster]

Dear colleagues,

I have just concluded the analysis of my 2017, Dec 12/13 unfiltered CCD photometry session of ASASSN-17qh. Observations were made at CBA Belgium Observatory,  using a 0.40-m f/10.0 telescope and STT-3200ME CCD camera, under a clear sky. Combining this new dataset with my previous (Dec 08/09) observations, has allowed to much refine the superhump period. A period analysis using the ANOVA, Lomb-Scargle and PDM methods (Peranso), yields a combined superhump period of 0.0570 +/- 0.0002d and an amplitude of 0.24 mag. The object has faded to mag 15.0 (unfiltered) on Dec 12th.  

 

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

Best regards
Tonny

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Tonny Vanmunster
CBABelgium Observatory
 <http://www.cbabelgium.com> www.cbabelgium.com
 <http://www.peranso.com> www.peranso.com