Detection
of the UGSU-type nature of optical transient
OT_J084555.1+033930
Following the recent announcement in the "CBAT
Unconfirmed Observations Page"
of the discovery of the optical transient
OT_J084555.1+033930 in Hya, I have pleasure to
herewith report my detection of superhumps in this
system. My unfiltered CCD observations were made on
2008, Jan 24/25 over a time span of 3.5 hours under
moderate sky conditions (clear, but strong
moonlight). I used a 0.35-m f/6.3 telescope with
ST-7XME CCD camera. The resulting light curve is
depicted below.
Our CBA Belgium Observatory light
curve clearly shows superhumps with an amplitude of
about 0.2 mag and a period of 0.0577 +/- 0.0055 d.
The latter was determined using the ANOVA method,
implemented in Peranso.
Hence, OT_J084555.1+033930 is a new member of the
SU UMa-type dwarf novae.
ANOVA period window showing
superhump period at 0.0577d
Superhump profile at P=0.0577d
(Phase diagram)
It will be interesting to eep on monitoring this
target during its present outburst !