December 2022 - vsnet-campaign-dn - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-campaign-dn 16791] AY Lac rapidly faded
by Taichi Kato 30 Dec '22

30 Dec '22

AY Lac rapidly faded YYYYMMDD(UT) mag observer 20221220.5363 <139cG (Yutaka Maeda) 20221222.1777 16.273zg (ZTF Alert DC mag (Masci+ 2019)) 20221222.2272 16.306zr (ZTF Alert DC mag (Masci+ 2019)) 20221223.797 163C (Jeremy Shears) 20221224.857 17.21C (Gary Poyner) 20221225.413 18.27C (Hiroshi Itoh) 20221225.4545 <146c (Yutaka Maeda) 20221225.5029 <141cG (Yutaka Maeda) 20221225.5580 <173C (Masayuki Moriyama) 20221226.5805 <167C (Masayuki Moriyama)

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[vsnet-campaign-dn 16790] WX Hyi superoutburst
by Taichi Kato 30 Dec '22

30 Dec '22

WX Hyi superoutburst YYYYMMDD(UT) mag observer 20221222.596 147 (Rod Stubbings) 20221224.619 157 (Rod Stubbings) 20221225.582 155 (Rod Stubbings) 20221226.569 147 (Rod Stubbings) 20221227.578 123 (Rod Stubbings) 20221229.603 116 (Rod Stubbings)

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[vsnet-campaign-dn 16789] ASASSN-22ak: very rapid fading!
by Taichi Kato 30 Dec '22

30 Dec '22

ASASSN-22ak: very rapid fading! Josch Hambsch has reported further observations. Although no definite superhump signal has been detected, the object suddenly faded by 1.8 mag on Dec. 29 (probably more than 2 mag/d since there was no hint of fading during Dec. 28 observations). This fading supports my second interpretation as an AM CVn star. The object is still expected to be detectable and please continue observations.

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[vsnet-campaign-dn 16788] ATLAS17mmm likely superoutburst
by Taichi Kato 28 Dec '22

28 Dec '22

ATLAS17mmm likely superoutburst YYYYMMDD(UT) mag observer 20221221.2523 16.262zg (ZTF Alert DC mag (Masci+ 2019)) 20221221.2940 16.548zr (ZTF Alert DC mag (Masci+ 2019)) 20221226.6417 16.79C (Masayuki Moriyama)

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[vsnet-campaign-dn 16787] APA-V1 superoutburst?
by Taichi Kato 28 Dec '22

28 Dec '22

APA-V1 superoutburst? Suspected SU UMa star. Last likely superoutburst in 2020 July (ZTF data). YYYYMMDD(UT) mag observer 20221126.5886 <165C (Masayuki Moriyama) 20221205.5022 <168C (Masayuki Moriyama) 20221226.5015 16.17C (Masayuki Moriyama)

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[vsnet-campaign-dn 16786] CRTSJ091245.9-034916 outburst
by Taichi Kato 28 Dec '22

28 Dec '22

CRTSJ091245.9-034916 outburst Known SU UMa star. YYYYMMDD(UT) mag observer 20221205.8328 <153c (Yutaka Maeda) 20221207.7902 <146c (Yutaka Maeda) 20221208.7800 <151c (Yutaka Maeda) 20221209.4243 17.785zg (ZTF Alert DC mag (Masci+ 2019)) 20221209.8217 <157c (Yutaka Maeda) 20221211.8374 <162C (Masayuki Moriyama) 20221215.4745 17.199zr (ZTF Alert DC mag (Masci+ 2019)) 20221223.4359 15.615zr (ZTF Alert DC mag (Masci+ 2019)) 20221223.4440 15.442zg (ZTF Alert DC mag (Masci+ 2019)) 20221225.7562 <146c (Yutaka Maeda) 20221225.8270 157C (Masayuki Moriyama)

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[vsnet-campaign-dn 16785] SDSSJ074640.62+173412.8 likely superoutburst
by Taichi Kato 27 Dec '22

27 Dec '22

SDSSJ074640.62+173412.8 likely superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20221207.7198 <153c (Yutaka Maeda) 20221208.7126 <147c (Yutaka Maeda) 20221209.7395 <148c (Yutaka Maeda) 20221215.6636 <155c (Yutaka Maeda) 20221220.6618 <152c (Yutaka Maeda) 20221225.6450 159:c (Yutaka Maeda)

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[vsnet-campaign-dn 16784] CRTSJ000024.7+332543 likely superoutburst
by Taichi Kato 27 Dec '22

27 Dec '22

CRTSJ000024.7+332543 likely superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20221220.5264 <161c (Yutaka Maeda) 20221224.5282 <159c (Yutaka Maeda) 20221225.4947 148cG (Yutaka Maeda) 20221225.4948 148cG (Yutaka Maeda)

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[vsnet-campaign-dn 16783] FT Cam bright outburst
by Taichi Kato 27 Dec '22

27 Dec '22

FT Cam bright outburst Object below the period gap. Not yet seen in superoutburst. YYYYMMDD(UT) mag observer 20221220.585 174C (Mitsutaka Hiraga) 20221220.5923 <153c (Yutaka Maeda) 20221220.6760 <146cG (Yutaka Maeda) 20221220.817 <152 (Gary Poyner) 20221221.2904 17.689zr (ZTF Alert DC mag (Masci+ 2019)) 20221223.891 <152 (Gary Poyner) 20221224.5943 157:c (Yutaka Maeda) 20221225.6951 137cG (Yutaka Maeda) 20221225.6952 137cG (Yutaka Maeda)

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[vsnet-campaign-dn 16782] CRTSJ010522.2+110253 likely superoutburst
by Taichi Kato 26 Dec '22

26 Dec '22

CRTSJ010522.2+110253 likely superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20221215.1508 20.125zr (ZTF Alert DC mag (Masci+ 2019)) 20221215.5654 <156c (Yutaka Maeda) 20221220.5633 <154c (Yutaka Maeda) 20221224.5651 144:cG (Yutaka Maeda) 20221224.5651 144:cG (Yutaka Maeda)

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