[vsnet-alert 21599] ASASSN-17pb: new SU UMa type dwarf nova

Tonny Vanmunster tonny.vanmunster at gmail.com
Sat Nov 18 16:51:40 JST 2017

Dear colleagues,

I have just concluded the analysis of my 2017, Nov 17/18 unfiltered CCD photometry session of ASASSN-17pb. Observations were made at CBA Belgium Observatory,  using a 0.40-m f/10.0 telescope and STT-3200ME CCD camera, under a (mostly) clear sky. The resulting light curve clearly shows the presence of superhumps with an amplitude of 0.23 mag. A period analysis using the ANOVA, Lomb-Scargle and PDM methods (Peranso), yields a combined preliminary superhump period of 0.0820 +/- 0.0004d, hence establishing this object as a new SU UMa type dwarf nova. The object was at mag 16.9 (unfiltered) on Nov 17th.  

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

Best regards


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

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