[vsnet-outburst 31501] 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 -- ---------------------------------------------- South African Astronomical Observatory, Postdoc fellow 反保 雄介 Yusuke TAMPO MAIL: tampo@kusastro.kyoto-u.ac.jp MAIL: yusuke@saao.ac.za ----------------------------------------------
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 -- ---------------------------------------------- South African Astronomical Observatory, Postdoc fellow 反保 雄介 Yusuke TAMPO MAIL: tampo@kusastro.kyoto-u.ac.jp MAIL: yusuke@saao.ac.za ----------------------------------------------
Hi Sebastian, under which name? ASASSN-25bt is not found by WEBOBS. Regards, Josch On 20.05.2025 16:17, Sebastián Otero wrote:
Hi Josch,
it was added to VSX on May 14.
Cheers, Sebastian
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
-- Sebastián Otero VSX Team American Association of Variable Star Observers
185 Alewife Brook Pkwy Ste 410 Cambridge, MA 02138-1104 www.aavso.org
------------------------
The mission of the AAVSO is to enable anyone, anywhere, to participate in scientific discovery through variable star astronomy.
Okay, found it. Name is: TCP J20402089+4915562 Re-analysing the images..... Regrads, Josch On 20.05.2025 16:22, Josch Hambsch wrote:
Hi Sebastian,
under which name? ASASSN-25bt is not found by WEBOBS.
Regards,
Josch
On 20.05.2025 16:17, Sebastián Otero wrote:
Hi Josch,
it was added to VSX on May 14.
Cheers, Sebastian
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
-- Sebastián Otero VSX Team American Association of Variable Star Observers
185 Alewife Brook Pkwy Ste 410 Cambridge, MA 02138-1104 www.aavso.org
------------------------
The mission of the AAVSO is to enable anyone, anywhere, to participate in scientific discovery through variable star astronomy.
participants (4)
-
hambsch＠telenet.be -
Josch Hambsch
-
Sebastián Otero -
Yusuke Tampo