June 2023 - vsnet-newvar - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-newvar 10138] ASASSN-20an outburst
by Taichi Kato 02 Jun '23

02 Jun '23

ASASSN-20an outburst YYYYMMDD(UT) mag observer 20230523.7771 16.720c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.7870 16.678c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.7899 16.718c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.7961 16.705c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.0610 16.971o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.0643 16.926o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.0706 16.911o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.0842 16.895o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.7686 16.901o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.7725 16.998o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.7777 16.988o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.7884 17.076o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.7907 17.038o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.7936 17.065o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.7988 17.097o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-newvar 10136] ASASSN-20dj: SN
by Taichi Kato 02 Jun '23

02 Jun '23

ASASSN-20dj: SN The ATLAS light curve looks like to me an SN (relatively slow rise to maximum and faded in several months).

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[vsnet-newvar 10135] Re: Carter_SDSSJ173047.59+554518.5 rare superoutburst (AM CVn)
by Taichi Kato 02 Jun '23

02 Jun '23

Re: Carter_SDSSJ173047.59+554518.5 rare superoutburst (AM CVn) Recent data: YYYYMMDD(UT) mag observer 20230524.5141 19.376o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.5442 19.253o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.5502 19.170o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.3606 19.310zr (ZTF Alert DC mag (Masci+ 2019)) 20230525.3891 19.188zr (ZTF Alert DC mag (Masci+ 2019)) 20230525.4054 19.499zg (ZTF Alert DC mag (Masci+ 2019)) 20230526.4524 18.826o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.4779 19.099o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.4817 18.659o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.5090 18.846o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.5122 14.480o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.5419 14.478o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.5739 14.455o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.6010 14.504o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230530.5266 14.752o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230530.5589 14.574o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230531.522 144C (Mitsutaka Hiraga) 20230531.621 144C (Mitsutaka Hiraga) 20230601.2496 14.405g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230601.4872 14.975o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230601.4908 14.960o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230601.5198 14.908o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) Time-resolved photometric campaigns were conducted in 2014 and 2016.

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[vsnet-newvar 10134] Carter_SDSSJ173047.59+554518.5 rare superoutburst (AM CVn)
by Taichi Kato 02 Jun '23

02 Jun '23

Carter_SDSSJ173047.59+554518.5 rare superoutburst (AM CVn) Time-resolved photometry is very much encouraged. Last one in 2016. YYYYMMDD(UT) mag observer 20230519.4613 19.506zr (ZTF Alert DC mag (Masci+ 2019)) 20230520.555 <175C (Mitsutaka Hiraga) 20230521.4107 19.487zr (ZTF Alert DC mag (Masci+ 2019)) 20230522.3612 19.660zr (ZTF Alert DC mag (Masci+ 2019)) 20230523.4322 19.479zg (ZTF Alert DC mag (Masci+ 2019)) 20230523.564 <172C (Mitsutaka Hiraga) 20230525.3606 19.310zr (ZTF Alert DC mag (Masci+ 2019)) 20230525.3891 19.188zr (ZTF Alert DC mag (Masci+ 2019)) 20230525.4054 19.499zg (ZTF Alert DC mag (Masci+ 2019)) 20230531.522 144C (Mitsutaka Hiraga) 20230531.621 144C (Mitsutaka Hiraga) 20230601.2496 14.405g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-newvar 10133] PS16bqk most likely superoutburst (AM CVn?)
by Taichi Kato 02 Jun '23

02 Jun '23

PS16bqk most likely superoutburst (AM CVn?) As suggested by VSX, the AM CVn type is highly likely. Time-resolved photometry is encouraged. https://www.aavso.org/vsx/index.php?view=detail.top&oid=2387514 YYYYMMDD(UT) mag observer 20230521.3680 15.557zg (ZTF Alert DC mag (Masci+ 2019)) 20230521.4196 15.880zr (ZTF Alert DC mag (Masci+ 2019)) 20230521.5006 15.910o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230521.5024 15.939o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230521.5063 15.931o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230521.5122 15.929o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.4022 16.172zr (ZTF Alert DC mag (Masci+ 2019)) 20230523.4450 15.880zg (ZTF Alert DC mag (Masci+ 2019)) 20230523.6066 16.243o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.6098 16.279o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.6130 16.314o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.6161 16.219o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.3853 16.439zr (ZTF Alert DC mag (Masci+ 2019)) 20230525.4212 16.161zg (ZTF Alert DC mag (Masci+ 2019)) 20230525.5762 16.517o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.5771 16.548o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.5803 16.639o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.5835 16.637o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.5934 16.558o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.5971 16.603o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.5975 16.540o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.6069 16.364o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.6187 16.521o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230527.4255 19.080zg (ZTF Alert DC mag (Masci+ 2019)) 20230527.4791 19.212o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230529.4187 16.774o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230529.4214 16.816o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230529.4264 16.831o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230529.4541 16.815o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230530.4052 16.408zg (ZTF Alert DC mag (Masci+ 2019)) 20230531.4750 16.827o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-newvar 10132] ASASSN-16ee superoutburst?
by Taichi Kato 01 Jun '23

01 Jun '23

ASASSN-16ee superoutburst? Past one in 2021 Oct.-Nov. YYYYMMDD(UT) mag observer 20230510.7270 16.093c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230510.7299 16.107c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230510.7359 16.113c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230510.7457 16.122c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.0008 17.519o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.0041 17.398o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.0126 17.592o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.0230 17.511o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230515.1023 16.221o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230515.1053 16.186o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230515.1118 16.132o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230515.1242 16.119o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230515.1246 15.974o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230515.1270 16.050o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230515.1326 16.236o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230515.1427 16.261o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230516.7431 16.256c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230516.7469 16.285c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230516.7536 16.330c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230516.7634 16.199c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230518.0139 16.679o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230518.0237 16.631o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230518.0279 16.695o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230518.0377 16.747o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230519.7311 16.755c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230519.7345 16.786c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230519.7397 16.793c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230519.7498 16.764c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230520.9890 16.839o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230520.9922 16.925o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230520.9986 16.904o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230521.0105 17.026o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-newvar 10131] ASASSN-16gr likely superoutburst
by Taichi Kato 01 Jun '23

01 Jun '23

ASASSN-16gr likely superoutburst Supercycle about 300 d (ATLAS+ZTF+ASAS-SN). YYYYMMDD(UT) mag observer 20230522.3994 18.152zr (ZTF Alert DC mag (Masci+ 2019)) 20230522.4211 18.308zg (ZTF Alert DC mag (Masci+ 2019)) 20230523.0629 15.114g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230523.7858 <144c (Yutaka Maeda) 20230523.9831 15.368g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230524.3995 15.426zr (ZTF Alert DC mag (Masci+ 2019)) 20230525.0069 15.296c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.0378 15.560c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.0434 15.593c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.0467 15.610c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.4584 15.678zr (ZTF Alert DC mag (Masci+ 2019)) 20230526.9619 15.223g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230527.9531 15.373g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230528.0439 15.839c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.0472 15.806c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.0499 15.906c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.9557 15.502g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230530.2748 15.547g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-newvar 10130] ZTF23aajjayv: emerging superhumps?
by Taichi Kato 01 Jun '23

01 Jun '23

ZTF23aajjayv: emerging superhumps? According to the most recent observations by Tonny Vanmunster, superhumps may have emerged since May 28. I have not been able to determine the period.

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[vsnet-newvar 10129] ASASSN-18fp superhumps
by Taichi Kato 01 Jun '23

01 Jun '23

ASASSN-18fp superhumps Peter Starr has reported observations on two nights. Superhumps were present and the period was 0.06448(2) d. Not a WZ Sge star as judged from the early appearance of superhumps.

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vsnet-newvar June 2023