[vsnet-alert 22403] ASASSN-18ru: 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 2018, Aug 13/14 unfiltered CCD photometry session of ASASSN-18ru. Observations were made at CBA Extremadura Observatory (Spain),  using a 0.40-m f/5.1 telescope and SX-46 CCD camera, under a very clear sky. 

 

The resulting light curve clearly shows the presence of superhumps with an amplitude of 0.22 mag. A period analysis using the ANOVA, Lomb-Scargle and PDM methods (Peranso), yields a combined superhump period of 0.0613 +/- 0.0014d. The object was at mag 15.1 (CV) on Aug 13th. 

 

Astrometry: 17h 49m 30.94s, +02° 49’ 36.2” (with 0.3” residual).


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

 

Best regards
Tonny


 

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

www.peranso.com <http://www.peranso.com>