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[vsnet-chat 9267] ZTF19aarsrls = Gaia19cix
by Taichi Kato 16 Nov '22

16 Nov '22

ZTF19aarsrls = Gaia19cix

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[vsnet-chat 9266] ZTFJ013319.20+083725.5 = ZTF17aacpvmc: Porb (eclipsing polar)
by Taichi Kato 16 Nov '22

16 Nov '22

ZTFJ013319.20+083725.5 = ZTF17aacpvmc: Porb (eclipsing polar) From ZTF data. Porb = 0.0680639(1) d. Deep eclipses (more than 1.5 mag). Two maxima per period.

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[vsnet-chat 9265] ZTF18acqxpha: Porb (polar)
by Taichi Kato 15 Nov '22

15 Nov '22

ZTF18acqxpha: Porb (polar) From ZTF data. Porb = 0.0669152(1) d. Single maximum per orbit. 1.9 mag amplitude.

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[vsnet-chat 9264] ASASSN-20bc: UGSU:+E
by Taichi Kato 15 Nov '22

15 Nov '22

ASASSN-20bc: UGSU:+E From ZTF data. Eclipsing with Porb=0.0602790(1) d.

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[vsnet-chat 9263] SDSS J090113.51+144704.6: Z Cam
by Taichi Kato 14 Nov '22

14 Nov '22

SDSS J090113.51+144704.6: Z Cam From ZTF data. Dwarf nova state in late 2020-early 2021.

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[vsnet-chat 9262] SDSS J094558.24+292253.2: Porb
by Taichi Kato 14 Nov '22

14 Nov '22

SDSS J094558.24+292253.2: Porb From ZTF data. Porb=0.2467188(9) d. Double-wave large-amplitude peaks (full amplitude of 0.4 mag). Depths of minima differ and the half period is unlikely. Slightly eclipsing? M_V suggests a quiescent dwarf nova with a low Mdot.

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[vsnet-chat 9261] SDSS J115836.60+035547.3: VY Scl
by Taichi Kato 14 Nov '22

14 Nov '22

SDSS J115836.60+035547.3: VY Scl From ZTF data. Deep low state in late 2019-early 2020.

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[vsnet-chat 9260] CH Her: SU UMa star?
by Taichi Kato 12 Nov '22

12 Nov '22

CH Her: SU UMa star? ZTF data look like that of an SU UMa star with supercyccles of 130-160 d. The 2022 Sep.-Oct. outburst appears to have been a superoutburst YYYYMMDD(UT) mag observer 20220920.1748 19.641zr (ZTF Alert DC mag (Masci+ 2019)) 20220920.5144 <148c (Yutaka Maeda) 20220922.1615 19.333zr (ZTF Alert DC mag (Masci+ 2019)) 20220922.1716 20.380zg (ZTF Alert DC mag (Masci+ 2019)) 20220924.1567 14.948zr (ZTF Alert DC mag (Masci+ 2019)) 20220924.2288 14.653zg (ZTF Alert DC mag (Masci+ 2019)) 20220924.448 151C (Mitsutaka Hiraga) 20220926.1534 14.669zg (ZTF Alert DC mag (Masci+ 2019)) 20220926.2039 14.741zr (ZTF Alert DC mag (Masci+ 2019)) 20220927.6094 147C (Masayuki Moriyama) 20220928.1397 14.969zr (ZTF Alert DC mag (Masci+ 2019)) 20220928.1587 14.842zg (ZTF Alert DC mag (Masci+ 2019)) 20220929.5011 <153c (Yutaka Maeda) 20220929.5470 <143cG (Yutaka Maeda) 20220929.551 154C (Mitsutaka Hiraga) 20220929.6078 <150C (Masayuki Moriyama) 20220930.6203 15.58C (Masayuki Moriyama) 20221001.1637 15.126zg (ZTF Alert DC mag (Masci+ 2019)) 20221001.5794 15.74C (Masayuki Moriyama) 20221003.487 157C (Mitsutaka Hiraga) 20221005.1877 17.268zr (ZTF Alert DC mag (Masci+ 2019)) 20221005.2350 17.328zg (ZTF Alert DC mag (Masci+ 2019)) 20221005.4902 170:C (Masayuki Moriyama) 20221007.1403 18.142zr (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-chat 9259] PS1-3PIJ211449.81+444451.9 = IPHASJ211449.81+444451.9: IW And star with a single known deep dip
by Taichi Kato 05 Nov '22

05 Nov '22

PS1-3PIJ211449.81+444451.9 = IPHASJ211449.81+444451.9: IW And star with a single known deep dip According to the ZTF data, this object (Fratta et al., arXiv:2211.01694) is usually a heartbeat-type IW And star with a single very deep (19.2 mag) in 2019 Oct. following an outburst.

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[vsnet-chat 9258] VSOLJ Variable star bulletin No.103
by meineko 19 Oct '22

19 Oct '22

New issue of VSOLJ Variable star bulletin is now available at following URL. http://vsolj.cetus-net.org/bulletin.html No.103 2022 Oct. The TESS light curves of three short period Algol-type systems; X Tri is a real pulsator. Shin-ya Narusawa and Kazuo Nagai Seiichiro Kiyota, VSOLJ

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