[vsnet-alert 11419] Re: OT J212025.1+194157 = Catalina transient

[Gianluca Masi]

Dear Colleagues,

here is the lightcurve for this object, phased with a Psh
estimate of of 1.528 hours.

BTW: its mean magnitude was about 17.1 (clear).

Regards,
Gianluca

----- Segue Messaggio Originale  -----
Da : "Gianluca Masi" <gianluca at bellatrixobservatory.org>
A : Taichi Kato <tkato at kusastro.kyoto-u.ac.jp>,
variable_star_forum at yahoogroups.com,
vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp,
vsnet-alert at yahoogroups.com,
vsnet-campaign-dn at ooruri.kusastro.kyoto-u.ac.jp,
vsnet-newvar at ooruri.kusastro.kyoto-u.ac.jp,
vsnet-newvar at yahoogroups.com,
vsnet-outburst at ooruri.kusastro.kyoto-u.ac.jp,
vsnet-outburst at yahoogroups.com
oggetto : [vsnet-alert 11414] Re: OT J212025.1+194157 =
Catalina transient
Data : Sat, 22 Aug 2009 00:41:56 +0200

> Dear Colleagues,
> 
> I'm doing time-resolved photometry for this star, remotely
> using the Virtual Telescope system.
> 
> Real-time data reduction seems to show an humping object,
> with an amplitude of 0.2 mag with a period candidate of
> about 1.5 hours.
> 
> These observations seem to suggest a new SU UMa star.
> 
> Best,
> Gianluca
> 
> 
> ----- Segue Messaggio Originale  -----
> Da : Taichi Kato <tkato at kusastro.kyoto-u.ac.jp>
> A : variable_star_forum at yahoogroups.com,
> vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp,
> vsnet-alert at yahoogroups.com,
> vsnet-campaign-dn at ooruri.kusastro.kyoto-u.ac.jp,
> vsnet-newvar at ooruri.kusastro.kyoto-u.ac.jp,
> vsnet-newvar at yahoogroups.com,
> vsnet-outburst at ooruri.kusastro.kyoto-u.ac.jp,
> vsnet-outburst at yahoogroups.com
> oggetto : [vsnet-alert 11404] OT J212025.1+194157 =
> Catalina transient
> Data : Wed, 19 Aug 2009 12:57:38 +0900
> 
> > OT J212025.1+194157 = Catalina transient
> > 
> >    This Catalina transient (CSS090817:212025+194157)
> > appears to have a large outburst amplitude (5.9 mag
> > according to the CRTS CV page).  The apparent variations
> > in Catalina observations may be an indication of
> > superhumps. The object was also caught in outburst on
> > POSS plates. Follow-up observations are encouraged.
> > 
> > 908171181104193480 2009-08-17T19:26:52
> > 2009-08-17T06:18:48 21 20 25.12 +19 41 56.7 17.01 17.02
> 16.90 16.73 >
>
http://nesssi.cacr.caltech.edu/catalina/20090817/908171181104193480.html