[vsnet-outburst 23936] TCP J21040470+4631129 - appearance of full grown superhumps

Wed Jul 24 18:12:23 JST 2019

Dear colleagues,

I just finished analysing my V-filtered CCD observations of TCP J21040470+4631129, obtained last night (July 23/24, 2019) at CBA Extremadura Observatory using a 0.40-m f/5.1 telescope and SX-46 CCD camera, under clear skies. The light curve shows – for the first time since its current outburst – the appearance of prominent full grown superhumps with an amplitude of 0.14 mag. 

A period analysis using the ANOVA, Lomb-Scargle and PDM methods (Peranso), yields a combined superhump period of 0.0552 +/- 0.0002d. The object was at mag 10.95 (V) on Jul 24th. 

I will send my observations to AAVSO, CBA and VSNET for further analysis. 

Follow-up observations are evidently highly recommended.

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> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://ooruri.kusastro.kyoto-u.ac.jp/pipermail/vsnet-outburst/attachments/20190724/e0b2b518/attachment.html>