[vsnet-alert 22221] ASASSN-18lp: 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, Jun 09/10 unfiltered CCD photometry session of ASASSN-18lp. Observations were made at CBA Extremadura Observatory in Spain,  using a 0.40-m f/5.1 telescope and Trius SX-46 CCD camera, under an initially very clear sky, followed by clouds afterwards. The resulting light curve covers a small time span, yet it shows the presence of clear superhumps with an amplitude of 0.38 mag. A period analysis using the ANOVA, Lomb-Scargle and PDM methods (Peranso), yields a very preliminary combined superhump period of 0.092 +/- 0.005d, hence establishing this object as a new SU UMa type dwarf nova. The object was at mag 17.2 (CV) on Jun 10th.  

 

Follow-up observations are strongly recommended to more accurately establish the superhump period. 

 

Observations will be sent 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> www.cbabelgium.com
 <http://www.peranso.com> www.peranso.com