[vsnet-alert 22405] TCP J17453768-1756253: 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 15/16 unfiltered CCD photometry session of TCP J17453768-1756253. 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 0.23 mag. A period analysis using the ANOVA, Lomb-Scargle and PDM methods (Peranso), yields a combined superhump period of 0.0705 +/- 0.0014d. The object was at mag 13.3 (CV) on Aug 15th. I will publish my lightcurve on the “Cataclysmic Variables” Facebook page.

 

Astrometry: 17h 45m 37.74s, -17° 56’ 22.4” (with 0.3” residual).


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

 

Follow-up observations are highly recommended to further refine the superhump period.

 

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>