[vsnet-alert 9953] Superhumps in CSS080304:090240+052500

[Hiroyuki Maehara]

Dear colleagues,

I performed time-series photometry of the object last night.
The data show superhumps with an amplitude of ~0.5 mag.
The superhump period is around 0.057 d.
CSS080304:090240+052500 is a new large-amplitude SU UMa-type (or
WZ Sge-type) dwarf nova.

Further observations are encouraged.

Best regards,
Hiroyuki Maehara
VSNET Collaboration Team

On Thu, Mar 06, 2008 at 01:00:59AM +0900, Akira Arai wrote:
> We observed a new optical transient CSS080304:090240+052500
> using our 25cm telescope at Higashi-Hiroshma Observatory, Japan.
> The object is now aboue 16.8mag in V-band.
> 
> YYYYMMDD(UT) mag. err.
> 20080305.59146 16.8V 0.1 Higashi-Hiroshima Observatory
> 
> We started a time-series observation of the object using nofiltered CCD.
> 
> Regards,
> A. Arai and M. Uemura
> on behalf of the KANATA team
> Hiroshima University