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[vsnet-chat 8817] MGAB-V604: NL+E
by Taichi Kato 02 Sep '21

02 Sep '21

MGAB-V604: NL+E ZTF data. Porb=0.2220931(3) d. Eclipses are nearly 4 mag deep. Weak orbital humps.

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[vsnet-chat 8816] MGAB-V579: Z Cam star
by Taichi Kato 02 Sep '21

02 Sep '21

MGAB-V579: Z Cam star ZTF data. Standstill in 2020 Sep.-2021 Feb.

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[vsnet-chat 8815] MGAB-V507: SU UMa star with unusual activity
by Taichi Kato 02 Sep '21

02 Sep '21

MGAB-V507: SU UMa star with unusual activity ZTF time-resolved data recorded superhumps on 2018 Aug. 7 and 8. The period appears to be short (about 0.05 d). Dip in superoutburst in 2019 July. The object may be an EI Psc star.

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[vsnet-chat 8814] MGAB-V481: SU UMa star
by Taichi Kato 02 Sep '21

02 Sep '21

MGAB-V481: SU UMa star ZTF time-resolved data recorded superhumps on 2018 Aug. 17 and 18.

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[vsnet-chat 8813] MGAB-V439: Z Cam star
by Taichi Kato 02 Sep '21

02 Sep '21

MGAB-V439: Z Cam star From ZTF data. Standstill in 2020 Nov.-2021 Apr.

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[vsnet-chat 8812] MGAB-V432: orbital period
by Taichi Kato 02 Sep '21

02 Sep '21

MGAB-V432: orbital period From ZTF data. Porb=0.1844186(3) d. UGSS+E.

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[vsnet-chat 8811] MGAB-V390: deeply eclipsing, low-amplitude dwarf nova
by Taichi Kato 02 Sep '21

02 Sep '21

MGAB-V390: deeply eclipsing, low-amplitude dwarf nova From ZTF data. Porb=0.1553445(2) d. Eclipse nearly 3.0 mag. Low-amplitude SS Cyg-type dwarf nova (as of now, standstill may be expected).

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[vsnet-chat 8810] ZTF18aaxyrpd: VY Scl+E
by Taichi Kato 02 Sep '21

02 Sep '21

ZTF18aaxyrpd: VY Scl+E According to ZTF data, Porb = 0.1292706(1) with 0.4 mag eclipses. Faint state in 2019 Aug.-Sep.

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[vsnet-chat 8809] ZTF18aaxyrpd: IW And star
by Taichi Kato 02 Sep '21

02 Sep '21

ZTF18aaxyrpd: IW And star According to ZTF data, this object is a typical IW And star (pattern well visible in the 2020 data).

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[vsnet-chat 8808] ZTF18acullhv: possible AM CVn star
by Taichi Kato 02 Sep '21

02 Sep '21

ZTF18acullhv: possible AM CVn star According to ZTF data, this object showed complex outbursts similar to AM CVn-type superoutbursts. 064321.2 -234008 (2000.0) Gaia_DR2_2925381050846472192 group_C4 g=16.742(0.543) Mowlavi2020 064321.279 -234008.94 (2000.0) Gaia_DR2_2925381050846472064 plx=-(-) dismod=- pmra=-(-) pmdec=-(-) G=16.742 BP=16.680 RP=16.692 064321.280 -234008.96 (2000.0) Gaia_EDR3_2925381050848348288 plx=1.868(0.088) dismod=8.6 pmra=17.795(0.054) pmdec=-33.375(0.077) G=18.596 BP=18.550 RP=18.445 Blue and low-luminosity (M_V = +6.3 at max), consistent with the AM CVn-type classification. This object is bright (15 mag at max) and further observations to search for superhumps and spectroscopy are desirable.

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