October 2022 - vsnet-newvar - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-newvar 9462] Wils SDSSJ081408.42+090759.1 likely superoutburst
by Taichi Kato 16 Oct '22

16 Oct '22

Wils SDSSJ081408.42+090759.1 likely superoutburst YYYYMMDD(UT) mag observer 20221001.826 <171C (Mitsutaka Hiraga) 20221001.8307 <146c (Yutaka Maeda) 20221004.4989 19.372zr (ZTF Alert DC mag (Masci+ 2019)) 20221012.8494 <157c (Yutaka Maeda) 20221013.8557 140cG (Yutaka Maeda) 20221013.8557 140cG (Yutaka Maeda) 20221014.8337 142:cG (Yutaka Maeda)

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[vsnet-newvar 9461] KIC 11390659 bright outburst
by Taichi Kato 16 Oct '22

16 Oct '22

KIC 11390659 bright outburst (Porb is said to be below the period gap, no superhumps have been detected) https://www.aavso.org/vsx/index.php?view=detail.top&oid=297526 YYYYMMDD(UT) mag observer 20221012.1327 16.652zg (ZTF Alert DC mag (Masci+ 2019)) 20221012.6669 <162C (Masayuki Moriyama) 20221013.6258 163:C (Masayuki Moriyama) 20221015.487 125 (Hiroyuki Maehara)

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[vsnet-newvar 9460] ASASSN-18us possible superoutburst
by Taichi Kato 15 Oct '22

15 Oct '22

ASASSN-18us possible superoutburst YYYYMMDD(UT) mag observer 20221010.1426 16.899zr (ZTF Alert DC mag (Masci+ 2019)) 20221010.1518 16.742zg (ZTF Alert DC mag (Masci+ 2019)) 20221012.1238 16.808zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-newvar 9459] Re: ASASSN-15pd possible rare outburst
by Taichi Kato 15 Oct '22

15 Oct '22

Re: ASASSN-15pd possible rare outburst Outburst continues. Possible superoutburst? YYYYMMDD(UT) mag observer 20221010.1440 15.279zr (ZTF Alert DC mag (Masci+ 2019)) 20221010.1729 15.258zg (ZTF Alert DC mag (Masci+ 2019)) 20221012.1264 15.579zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-newvar 9458] MASTER OT J170515.37+724402.5 most likely superoutburst
by Taichi Kato 14 Oct '22

14 Oct '22

MASTER OT J170515.37+724402.5 most likely superoutburst Tupe from ZTF data. Short supercycle. YYYYMMDD(UT) mag observer 20220921.1810 19.570zr (ZTF Alert DC mag (Masci+ 2019)) 20220922.2825 18.777zr (ZTF Alert DC mag (Masci+ 2019)) 20220923.1550 19.126zr (ZTF Alert DC mag (Masci+ 2019)) 20220925.1827 18.987zr (ZTF Alert DC mag (Masci+ 2019)) 20220925.1836 19.213zr (ZTF Alert DC mag (Masci+ 2019)) 20220927.1315 18.677zr (ZTF Alert DC mag (Masci+ 2019)) 20220927.1970 18.966zg (ZTF Alert DC mag (Masci+ 2019)) 20221001.1580 19.158zg (ZTF Alert DC mag (Masci+ 2019)) 20221001.1590 19.232zg (ZTF Alert DC mag (Masci+ 2019)) 20221001.1953 19.220zr (ZTF Alert DC mag (Masci+ 2019)) 20221007.1351 17.288zr (ZTF Alert DC mag (Masci+ 2019)) 20221007.1832 17.070zg (ZTF Alert DC mag (Masci+ 2019)) 20221007.1841 17.071zg (ZTF Alert DC mag (Masci+ 2019)) 20221007.2172 17.009zr (ZTF Alert DC mag (Masci+ 2019)) 20221009.1869 16.321zg (ZTF Alert DC mag (Masci+ 2019)) 20221010.1383 16.228zr (ZTF Alert DC mag (Masci+ 2019)) 20221010.1821 16.290zg (ZTF Alert DC mag (Masci+ 2019)) 20221011.1657 16.607zr (ZTF Alert DC mag (Masci+ 2019)) 20221012.1347 16.545zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-newvar 9457] ASASSN-18wt likely superoutburst
by Taichi Kato 14 Oct '22

14 Oct '22

ASASSN-18wt likely superoutburst Tupe from ZTF data. YYYYMMDD(UT) mag observer 20221007.2558 16.647zr (ZTF Alert DC mag (Masci+ 2019)) 20221007.4534 16.613zg (ZTF Alert DC mag (Masci+ 2019)) 20221009.2791 16.526zr (ZTF Alert DC mag (Masci+ 2019)) 20221009.4504 16.738zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-newvar 9456] ASASSN-15pd possible rare outburst
by Taichi Kato 13 Oct '22

13 Oct '22

ASASSN-15pd possible rare outburst YYYYMMDD(UT) mag observer 20221010.1440 15.279zr (ZTF Alert DC mag (Masci+ 2019)) 20221010.1729 15.258zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-newvar 9455] SDSS J001153.08-064739.1: superhump period
by Taichi Kato 13 Oct '22

13 Oct '22

SDSS J001153.08-064739.1: superhump period Josch Hambsch has reported further observations. The superhump period has been determined tp be 0.10414(3) d. Amplitude 0.20 mag. If these superhumps are of stage B, the expected q=0.165 (table 4 in arXiv:2201.02945 = VSOLJ Variable Star Bulletin No. 89). Even if they are of stage C, q would be 0.18. This is very much in disagreement with Rebassa-Mansergas et al. (2014) giving q=0.32(8).

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[vsnet-newvar 9454] ZTF18abtbrfb: polar below the period minimum?
by Taichi Kato 12 Oct '22

12 Oct '22

ZTF18abtbrfb: polar below the period minimum? Using ZTF data, I obtained a period of 0.0335541(1) d (single peak, amplitude 1.0 mag). Although the double period is acceptable, the two peaks look too much alike.

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[vsnet-newvar 9453] SDSS J001153.08-064739.1 superhumps
by Taichi Kato 12 Oct '22

12 Oct '22

SDSS J001153.08-064739.1 superhumps Josch Hambsch detected superhumps also on Oct. 10. Despite the brightness (still brighter than 14.0) and 0.2-mag superhumps, no one else appears to be observing. This object is in the period gap and has an unusual secondary. Please pay more attention.

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vsnet-newvar October 2022