20 May
2025
20 May
'25
8:03 a.m.
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
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South African Astronomical Observatory, Postdoc fellow
反保 雄介 Yusuke TAMPO
MAIL: tampo@kusastro.kyoto-u.ac.jp
MAIL: yusuke@saao.ac.za
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