[vsnet-alert 11414] Re: OT J212025.1+194157 = Catalina transient

[Gianluca Masi]

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