I have observed this target the past nights. It's not yet in the VSX. Will send the data to you later today. 
Regards Josch 

-----Originele bericht-----
Van: Yusuke <tampo@kusastro.kyoto-u.ac.jp>
naar: vsnet-outburst <vsnet-outburst@ooruri.kusastro.kyoto-u.ac.jp>; vsnet-campaign-dn <vsnet-campaign-dn@ooruri.kusastro.kyoto-u.ac.jp>; vsnet-alert <vsnet-alert@ooruri.kusastro.kyoto-u.ac.jp>
datum: dinsdag 20 mei 2025 10:04 CEST
Onderwerp: [vsnet-alert 28062] ZTF18acynctq = TCP J20402089+4915562 = ASASSN-25bt: new SU UMa star candidate

ZTF18acynctq = TCP J20402089+4915562 = ASASSN-25bt: new SU UMa star
candidate

XOSS team via TOCP/TNS and ASAS-SN reported the 2025 outburst of this
system, which is already known as ZTF18acynctq in its 2018 outburst.
https://alerce.online/object/ZTF18acynctq
http://www.cbat.eps.harvard.edu/unconf/followups/J20402089+4915562.html
https://www.aavso.org/vsx/index.php?view=detail.top&oid=10848612

Its 2018 outburst lasted for ~15 days and showed a possible
rebrightening in the ATLAS data. Thus the outburst cycle is ~2300 d.
This system is currently ~16.0 mag, and time-resolved observations may
detect superhumps.

Best regards,
Yusuke