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[vsnet-chat 9209] MGAB-V872: period
by Taichi Kato 12 May '22

12 May '22

MGAB-V872: period From ZTF data. Porb=0.120052(2) d. Amplitude 0.4 mag.

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[vsnet-chat 9208] MGAB-V732: polar and period
by Taichi Kato 12 May '22

12 May '22

MGAB-V732: polar and period From ZTF data. Porb=0.0630179(1) d. Two peaks of different amplitude (0.7 mag in total) per cycle. High and low states. 182945.843 +321553.39 (2000.0) Gaia_DR2_4592047847404739968 plx=0.604(0.684) dismod=11.1 pmra=0.601(0.956) pmdec=-8.950(1.727) G=20.339 BP=20.050 RP=19.879 182945.843 +321553.39 (2000.0) Gaia_EDR3_4592047847404739968 plx=1.292(0.293) dismod=9.4 pmra=-0.085(0.290) pmdec=-7.187(0.328) G=20.186 BP=19.935 RP=19.626

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[vsnet-chat 9207] MGAB-V731: polar and period
by Taichi Kato 12 May '22

12 May '22

MGAB-V731: polar and period From ZTF data. Porb=0.0954179(4) d assuming two peaks per cycle. Half a period is allowed, but would be too exotic. Amplitude 0.25 mag. High and low states. 182733.838 +264653.66 (2000.0) Gaia_DR2_4585338730530417024 plx=0.731(0.485) dismod=10.7 pmra=-5.580(0.809) pmdec=-0.860(1.046) G=19.611 BP=19.641 RP=19.117 182733.838 +264653.66 (2000.0) Gaia_EDR3_4585338730530417024 plx=0.916(0.323) dismod=10.2 pmra=-5.693(0.315) pmdec=-0.532(0.365) G=19.552 BP=19.732 RP=19.053

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[vsnet-chat 9206] MGAB-V783: polar
by Taichi Kato 12 May '22

12 May '22

MGAB-V783: polar From ZTF data. Porb=0.0947083(1) d. Amplitude 1.3 mag and single peak per cycle. High and low states. 192045.058 +371624.13 (2000.0) Gaia_DR2_2051054519743616512 plx=1.093(0.286) dismod=9.8 pmra=-4.216(0.478) pmdec=-11.123(0.453) G=19.409 BP=19.817 RP=18.875 192045.058 +371624.13 (2000.0) Gaia_EDR3_2051054519743616512 plx=1.089(0.212) dismod=9.8 pmra=-4.553(0.232) pmdec=-10.492(0.269) G=19.276 BP=19.669 RP=18.775 Faint and color is also compatible with a polar.

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[vsnet-chat 9205] ASASSN-21qj: not VY Scl
by Taichi Kato 11 May '22

11 May '22

ASASSN-21qj: not VY Scl ASAS-SN data: https://asas-sn.osu.edu/sky-patrol/coordinate/e62dc628-571c-4558-aa26-44169… Resembles a fader (IS).

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[vsnet-chat 9204] MGAB-V202: orbital period
by Taichi Kato 11 May '22

11 May '22

MGAB-V202: orbital period From TESS data. Porb=0.17248(2) d (amp. 0.011 mag).

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[vsnet-chat 9203] VSOLJ Variable Star Bulletin No.102
by meineko 11 May '22

11 May '22

VSOLJ Variable Star Bulletin No.102 is now available at http://vsolj.cetus-net.org/bulletin.html No.102 Analysis of TESS observations of V844 Her during the 2020 superoutburst Taichi Kato --------------- Seiichiro Kiyota VSOLJ

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[vsnet-chat 9202] GSC8389.85: IW And star and orbital period
by Taichi Kato 10 May '22

10 May '22

GSC8389.85: IW And star and orbital period From TESS data. Porb=0.13550(1) d. Amplitude 0.02 mag. Heartbeat phase in TESS observation.

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[vsnet-chat 9201] GSC8944.2101: orbital period
by Taichi Kato 10 May '22

10 May '22

GSC8944.2101: orbital period From TESS data. Porb=0.168058(6) d. Amplitude 0.04 mag. Double maxima in one period. Negative superhumps with a period of 0.158321(2) d (amp. 0.025 mag), or this may be the orbital one. Beat phenomenon is also present.

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[vsnet-chat 9200] V395 Hya: orbital period
by Taichi Kato 10 May '22

10 May '22

V395 Hya: orbital period From TESS data. Porb=0.27805(4) d. Amplitude 0.008 mag. Double maxima in one period.

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