[vsnet-alert 23122] Re: TCP J05515391+6504346: new WZ Sge or SU UMa star

[Tonny Vanmunster tonny.vanmunster@gmail.com via vsnet-alert]

Dear all,

I herewith report my independent detection of superhumps in TCP
J05515391+6504346, based on 6.8hrs of unfiltered CCD photometry, obtained on
2019, Apr 01/02 at CBA Belgium Observatory, using a 0.40-m f/10.0 telescope
andSBIG STT-3200ME CCD camera, under (initially) clear skies.  I just
concluded the analysis of my observations, having returned from an
international business trip.

The resulting light curve clearly shows the presence of superhumps, which
show a structure that gradually becomes more complex during the 6.8hrs
session. They have an amplitude of 0.17 mag. A period analysis using the
ANOVA, Lomb-Scargle and PDM methods (Peranso), yields a combined superhump
period of 0.0569 +/- 0.0003d, a value which is close to the one reported by
Taichi below. The object was at mag 14.25 (CV) on Apr 01st.  

I have sent my observations to AAVSO, CBA and VSNET for further analysis. 

Follow-up observations are strongly recommended.

Best regards
Tonny


Tonny Vanmunster
CBA Belgium Observatory
CBA Extremadura Observatory
www.cbabelgium.com
www.peranso.com

-----Original Message-----
From: vsnet-alert [mailto:vsnet-alert-bounces at ooruri.kusastro.kyoto-u.ac.jp]
On Behalf Of Taichi Kato
Sent: dinsdag 2 april 2019 3:02
To: suuma at yahoogroups.com; 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; wzsge at yahoogroups.com
Subject: [vsnet-alert 23114] TCP J05515391+6504346: new WZ Sge or SU UMa
star

TCP J05515391+6504346: new WZ Sge or SU UMa star

   Tamas Tordai has reported observations.  The object showed clear
superhumps (0.16 mag) with a period of 0.0576(3) d.  The profile is
dominated by sharp minimum, which resembles that of early superhumps.
Further observations will clarify whether the current superhumps are early
or ordinary ones (if the case is the latter, they must be in stage A).