[vsnet-alert 25634] Re: CRTS J091245.9-034916 : new SU UMa-type dwarf nova

[Marc Deldem]

Hello,

On the night of 2021 April 01/02, superhumps are visibled on CRTS 
J091245.9-034916 with an amplitude of 0.17 magnitude and superhumps 
period is 0.0676 days. The object was at mag 15.45 CV.

Data have been sent to the AAVSO database.

Best regards,
Marc Deldem


Le 02/04/2021 à 00:07, tonny.vanmunster at gmail.com via vsnet-alert a écrit :
> Dear colleagues,
>
> I have just finished analysing my unfiltered CCD observations of CRTS
> J091245.9-034916, obtained on 2021, Mar 31/Apr 01 at CBA Belgium
> Observatory, using a 0.40-m f/10.0 telescope and QHY268M CMOS camera under
> clear skies.
>
> Regular superhumps with an amplitude of 0.33 mag are clearly visible in the
> resulting light curve, establishing CRTS J091245.9-034916 as a new SU
> UMa-type dwarf nova. A period analysis using the ANOVA, Lomb-Scargle,
> Generalized-Lomb-Scargle and PDM methods (Peranso 3.0), yields a combined
> superhump period of 0.0677 +/- 0.0007d. The object was at mag V = 15.1 on
> Mar 31st.
>
> I will send my observations to AAVSO, CBA and VSNET for further analysis.
>
> Best regards
> Tonny
>
> ---
>
> Tonny Vanmunster
> CBA Belgium Observatory
> CBA Extremadura Observatory
> http://www.cbabelgium.com
>
> PERANSO : The Light Curve and Period Analysis Software
> http://www.peranso.com
>
>