[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
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
vsnet-alert@ooruri.kusastro.kyoto-u.ac.jp
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Yusuke Tampo