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

[vsnet-newvar 8795] ZTF17aaaebcg: Z Cam + VY Scl
by Taichi Kato 21 Sep '21

21 Sep '21

ZTF17aaaebcg: Z Cam + VY Scl From ZTF data. Dwarf nova state in 2020. Deep fading in late 2018-early 2019.

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[vsnet-newvar 8794] ZTF18abrxtii: eclipsing polar
by Taichi Kato 21 Sep '21

21 Sep '21

ZTF18abrxtii: eclipsing polar From ZTF data. Porb = 0.0699896(1) d. Eclipse epoch: BJD 2458721.295. Eclipses were too deep to be recorded by ZTF.

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[vsnet-newvar 8793] ZTF18abbywzz: NL+E
by Taichi Kato 21 Sep '21

21 Sep '21

ZTF18abbywzz: NL+E From ZTF data. Eclipse in time-resolved data.

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[vsnet-newvar 8792] ZTF18abcbzzd: VY Scl
by Taichi Kato 21 Sep '21

21 Sep '21

ZTF18abcbzzd: VY Scl From ZTF data. Low state in late 2018.

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[vsnet-newvar 8791] ZTF18ablraho: dwarf nova
by Taichi Kato 21 Sep '21

21 Sep '21

ZTF18ablraho: dwarf nova From ZTF data (cycle length about 10 d). There are some fainter points and may be eclipsing.

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[vsnet-newvar 8790] ZTF18abtuuaf: Z Cam star
by Taichi Kato 21 Sep '21

21 Sep '21

ZTF18abtuuaf: Z Cam star From ZTF data. Dwarf nova state in 2019 (cycle length 10 d). NL (standstill, but bright) state otherwise.

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[vsnet-newvar 8789] Lanning290 = ZTF18abtzeax: AM+E
by Taichi Kato 21 Sep '21

21 Sep '21

Lanning290 = ZTF18abtzeax: AM+E From ZTF data. Porb=0.0627089(1) d. Eclipse epoch: BJD 2458836.6595. Too faint for NL and the eclipse profile looks diskless.

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[vsnet-newvar 8788] Gaia17asx possible superoutburst
by Taichi Kato 18 Sep '21

18 Sep '21

Gaia17asx possible superoutburst Type from ZTF data. There was an outburst in 2021 June (normal). The next superoutburst is overdue and the current one is expected to be s super. YYYYMMDD(UT) mag observer 20210901.2764 21.222zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210903.3009 22.190zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210905.3053 21.613zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210909.3198 21.586zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210916.2764 16.713zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-newvar 8787] ASASSN-19ax: possible superhump
by Taichi Kato 18 Sep '21

18 Sep '21

ASASSN-19ax: possible superhump Kiyota-san reported observations. The object showed 0.3-mag variation resembling a superhump. The length of observation was not sufficient to record a full cycle. The period (if the variation is periodic) appears to be longer than 2 hr and the object could be an SU UMa star above the period gap. Further observations are strongly encouraged.

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[vsnet-newvar 8715] PNV J21581852+2419246 superoutburst (since Aug. 27)
by Patrick Schmeer 17 Sep '21

17 Sep '21

PNV J21581852+2419246 (UGSU) https://www.aavso.org/vsx/index.php?view=detail.top&oid=270725 Bright since 2021 August 27.470 UT (orange mag. 14.5) according to ATLAS data (last non-detection on Aug. 25.399 UT; orange mag. 16.0 on September 4.46 UT). Time-resolved photometry is encouraged. Clear skies, Patrick ------------ References: Asteroid Terrestrial-impact Last Alert System (ATLAS): - Tonry et al., 2018PASP..130f4505T --------------------------------------------- Gary Poyner wrote on Saturday, 4 September 2021 at 15:26:11 UTC: The UGSU star OT J215818.5+241925 (PNV J21581852+2419246) is in outburst. The first detected since September 2018... September 03.940 14.903CV Open University COAST regards, Gary

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vsnet-newvar September 2021