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

[vsnet-alert 27813] ASASSN-13bc likely superoutburst
by Taichi Kato 05 Jun '23

05 Jun '23

ASASSN-13bc likely superoutburst (Frequent superoutbursts) YYYYMMDD(UT) mag observer 20230531.519 <176C (Mitsutaka Hiraga) 20230602.6422 <158c (Yutaka Maeda) 20230603.6450 148cG (Yutaka Maeda) 20230604.6358 152C (Masayuki Moriyama)

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[vsnet-alert 27812] V419 Lyr possible superoutburst
by Taichi Kato 05 Jun '23

05 Jun '23

V419 Lyr possible superoutburst YYYYMMDD(UT) mag observer 20230520.672 <174C (Mitsutaka Hiraga) 20230521.4207 19.038zr (ZTF Alert DC mag (Masci+ 2019)) 20230523.592 <174C (Mitsutaka Hiraga) 20230523.7581 <159c (Yutaka Maeda) 20230523.7767 <178C (Masayuki Moriyama) 20230525.7397 <178C (Masayuki Moriyama) 20230602.7119 154C (Masayuki Moriyama) 20230604.6412 155C (Masayuki Moriyama)

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[vsnet-alert 27811] HS Vir superoutburst
by Taichi Kato 05 Jun '23

05 Jun '23

HS Vir superoutburst YYYYMMDD(UT) mag observer 20230519.0104 15.824g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230519.2376 15.780zr (ZTF Alert DC mag (Masci+ 2019)) 20230519.3172 15.590zg (ZTF Alert DC mag (Masci+ 2019)) 20230519.9861 15.748g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230520.0444 15.891g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230520.6469 159C (Masayuki Moriyama) 20230521.0023 15.917g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230521.3239 15.496zg (ZTF Alert DC mag (Masci+ 2019)) 20230521.6282 159C (Masayuki Moriyama) 20230523.4755 <146c (Yutaka Maeda) 20230523.6496 157C (Masayuki Moriyama) 20230523.7181 15.695g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230524.3679 16.076g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230525.1099 16.057g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230525.2483 15.767zr (ZTF Alert DC mag (Masci+ 2019)) 20230525.2609 16.277g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230525.2666 15.747zg (ZTF Alert DC mag (Masci+ 2019)) 20230525.633 156 (Rod Stubbings) 20230526.7097 15.934g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230527.0961 15.987g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230527.7363 15.914g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230528.1017 14.819g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230528.2782 14.584g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230528.667 142 (Rod Stubbings) 20230602.4744 137:cG (Yutaka Maeda) 20230602.5706 139C (Masayuki Moriyama) 20230603.4784 135cG (Yutaka Maeda) 20230603.4784 135cG (Yutaka Maeda)

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[vsnet-alert 27810] SDSSJ162830.89+240259.1 most likely superoutburst
by Taichi Kato 04 Jun '23

04 Jun '23

SDSSJ162830.89+240259.1 most likely superoutburst No time-resolved photometry has been reported to us. Observations are encouraged. YYYYMMDD(UT) mag observer 20230527.9076 <17.439g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230528.2858 <16.410g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230528.3360 <17.122g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230528.8989 <17.271g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230529.3197 <17.616g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230531.3897 17.551g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230531.553 <177C (Mitsutaka Hiraga) 20230601.1498 <16.260g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230601.2442 <16.680g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230602.1869 14.596g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230602.5449 147cG (Yutaka Maeda) 20230602.5449 147cG (Yutaka Maeda)

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[vsnet-alert 27809] OU Vir superoutburst
by Taichi Kato 04 Jun '23

04 Jun '23

OU Vir superoutburst UGSU+E YYYYMMDD(UT) mag observer 20230526.3254 <17.574g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230526.4870 <147c (Yutaka Maeda) 20230526.947 <147 (Gary Poyner) 20230527.969 <147 (Gary Poyner) 20230529.2339 <17.015g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230530.2482 15.346g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230602.4840 145:c (Yutaka Maeda) 20230602.4840 145:c (Yutaka Maeda)

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[vsnet-alert 27808] ASASSN-19add possible superoutburst
by Taichi Kato 02 Jun '23

02 Jun '23

ASASSN-19add possible superoutburst ASAS-SN Sky Patrol Photom. DB in combined magnitude. ATLAS data were before the current outburst. YYYYMMDD(UT) mag observer 20230525.0351 17.146g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230525.0351 17.213g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230526.6907 <17.009g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230526.7132 18.449o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.7166 18.668o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.7264 18.408o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.7425 18.884o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230527.0267 16.421g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230527.0267 16.531g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230527.7057 15.969g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230528.0265 15.835g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230528.0265 15.985g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230528.7168 16.003g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230530.0218 16.005g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230530.0218 16.006g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230601.0151 16.162g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-alert 27807] ASASSN-23el previous outburst
by Taichi Kato 02 Jun '23

02 Jun '23

ASASSN-23el previous outburst https://www.aavso.org/vsx/index.php?view=detail.top&oid=2387521 YYYYMMDD(UT) mag observer 20030528.2597 <14.50V (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397)) 20030531.3910 13.178V (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397)) 20030604.1465 13.581V (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397)) 20030612.3281 <14.50V (ASAS (Pojmanski, G. 2002, Acta Astron. 52,397))

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[vsnet-alert 27806] 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-alert 27805] V1006 Cyg: standstill-like state?
by Taichi Kato 02 Jun '23

02 Jun '23

V1006 Cyg: standstill-like state? cf. [vsnet-alert 27728] V1006 Cyg unusual state with frequent, short outbursts The object stopped outbursting and may have entered a standstill-like state in May. YYYYMMDD(UT) mag observer 20230511.7231 148cG (Yutaka Maeda) 20230512.4044 15.256zg (ZTF Alert DC mag (Masci+ 2019)) 20230512.4535 15.413zr (ZTF Alert DC mag (Masci+ 2019)) 20230512.5821 15.621o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.5839 15.573o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.5885 15.657o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.6067 15.633o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.6123 17.280o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.6142 17.818o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230513.4079 16.235zg (ZTF Alert DC mag (Masci+ 2019)) 20230513.4660 16.180zr (ZTF Alert DC mag (Masci+ 2019)) 20230514.3641 16.475zg (ZTF Alert DC mag (Masci+ 2019)) 20230514.4300 16.392zr (ZTF Alert DC mag (Masci+ 2019)) 20230514.5433 16.523o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.5455 16.499o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.5469 16.631o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.5501 16.588o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.5583 16.635o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.5587 16.732o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.7588 <146c (Yutaka Maeda) 20230515.4218 16.424zr (ZTF Alert DC mag (Masci+ 2019)) 20230515.4433 16.591zg (ZTF Alert DC mag (Masci+ 2019)) 20230515.7188 <150c (Yutaka Maeda) 20230516.7121 <153c (Yutaka Maeda) 20230517.3622 16.685zg (ZTF Alert DC mag (Masci+ 2019)) 20230517.4078 16.490zr (ZTF Alert DC mag (Masci+ 2019)) 20230518.4495 16.498zr (ZTF Alert DC mag (Masci+ 2019)) 20230518.9757 <142 (Eddy Muyllaert) 20230519.4342 16.438zg (ZTF Alert DC mag (Masci+ 2019)) 20230519.4556 16.350zr (ZTF Alert DC mag (Masci+ 2019)) 20230519.7238 <165c (Yutaka Maeda) 20230520.4103 16.317zr (ZTF Alert DC mag (Masci+ 2019)) 20230520.4222 16.529zg (ZTF Alert DC mag (Masci+ 2019)) 20230521.3914 16.630zg (ZTF Alert DC mag (Masci+ 2019)) 20230521.4452 16.387zr (ZTF Alert DC mag (Masci+ 2019)) 20230522.4103 16.117zr (ZTF Alert DC mag (Masci+ 2019)) 20230522.4329 16.249zg (ZTF Alert DC mag (Masci+ 2019)) 20230522.5622 15.964o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230522.5640 15.966o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230522.5703 15.984o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230522.5803 16.004o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.4109 15.797zr (ZTF Alert DC mag (Masci+ 2019)) 20230523.4500 15.781zg (ZTF Alert DC mag (Masci+ 2019)) 20230523.7312 <156c (Yutaka Maeda) 20230524.5397 16.361o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.5690 16.558o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.5700 16.627o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.5719 16.227o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.5723 16.468o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.5755 16.455o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.5777 16.429o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230525.4272 16.517zg (ZTF Alert DC mag (Masci+ 2019)) 20230525.4306 16.451zg (ZTF Alert DC mag (Masci+ 2019)) 20230525.4569 16.368zr (ZTF Alert DC mag (Masci+ 2019)) 20230525.4584 16.462zr (ZTF Alert DC mag (Masci+ 2019)) 20230526.4982 16.209o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.5009 16.226o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.5216 16.167o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230526.5271 16.363o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.5220 16.256o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.5247 16.328o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.5394 16.541o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.5495 16.326o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230530.5202 16.347o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230530.5231 16.409o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230530.5302 16.325o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230601.5119 16.327o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230601.5146 16.477o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230601.5358 16.478o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230601.5539 16.437o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-alert 27804] 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-alert June 2023