September 2021 - vsnet-newvar - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-newvar 8805] ZTF18ablrcnn: deeply eclipsing SS Cyg star
by Taichi Kato 23 Sep '21

23 Sep '21

ZTF18ablrcnn: deeply eclipsing SS Cyg star From ZTF data. Eclipses were prominent even during an outburst. Porb=0.245646(2) d. Eclipse epoch: BJD 2458750.447.

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[vsnet-newvar 8804] ASASSN-19ax superhump period
by Taichi Kato 22 Sep '21

22 Sep '21

ASASSN-19ax superhump period Itoh-san, Kiyota-san, Tonny Vanmunster and Tamas Tordai have reported observations. The superhump period is established to be 0.10012(2) d. There is currently no period variation.

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[vsnet-newvar 8803] ZTF18abcwxnq = IPHASJ184326.48+060800.9: AM+E
by Taichi Kato 22 Sep '21

22 Sep '21

ZTF18abcwxnq = IPHASJ184326.48+060800.9: AM+E From ZTF data. Porb=0.1566871(5) d. Eclipse epoch: BJD 2458701.143. Eclipse profile indicates a diskless system. Faint absolute magnitude and red color are compatible with a polar.

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[vsnet-newvar 8802] ZTF18abbubng: IW And star
by Taichi Kato 22 Sep '21

22 Sep '21

ZTF18abbubng: IW And star From ZTF data. Heartbeat particularly in 2018 and 2019.

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[vsnet-newvar 8801] ZTF19aawkqtn: Z Cam
by Taichi Kato 22 Sep '21

22 Sep '21

ZTF19aawkqtn: Z Cam From ZTF data. Standstill in 2018.

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[vsnet-newvar 8800] ZTF18aayuzpo: Z Cam (possible IW And)+E
by Taichi Kato 22 Sep '21

22 Sep '21

ZTF18aayuzpo: Z Cam (possible IW And)+E From ZTF data. Porb=0.248874(2) d. Eclipse epoch: BJD 2458704.005. Standstill in 2020-2021 Apr. Brightening and then faded.

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[vsnet-newvar 8799] ZTF18abotsfo: likely AM CVn
by Taichi Kato 22 Sep '21

22 Sep '21

ZTF18abotsfo: likely AM CVn From ZTF data. Supercycle about 160 d and complex superoutburst (dip + rebrightening).

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[vsnet-newvar 8798] ZTF18abbnzxm: IW And star
by Taichi Kato 22 Sep '21

22 Sep '21

ZTF18abbnzxm: IW And star From ZTF data. Heartbeat and dips in 2020-2021.

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[vsnet-newvar 8797] TCP J20115874-1922459: likely a dwarf nova outburst (mag. 15, in Capricornus)
by Patrick Schmeer 22 Sep '21

22 Sep '21

TCP J20115874-1922459 = BraTS-SON-T2-032 (UG:) https://www.aavso.org/vsx/index.php?view=detail.top&oid=2224741 Complete ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) light curve and data: https://asas-sn.osu.edu/sky-patrol/coordinate/eaad0624-e1cc-4b94-81ea-82a5d… Outburst amplitude 7 magnitudes. Already in outburst (orange mag. ~15.4) on 2021 September 20.358 UT according to ATLAS data. Time-resolved photometry is encouraged. Clear skies, Patrick ------- References: All-Sky Automated Survey for Supernovae (ASAS-SN) Sky Patrol: - Shappee et al., 2014ApJ...788...48S - Kochanek et al., 2017PASP..129j4502K Asteroid Terrestrial-impact Last Alert System (ATLAS): - Tonry et al., 2018PASP..130f4505T

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[vsnet-newvar 8796] ZTF18abyeouz: VY Scl
by Taichi Kato 21 Sep '21

21 Sep '21

ZTF18abyeouz: VY Scl From ZTF data. Deep fading in late 2019-early 2020.

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vsnet-newvar September 2021