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

[vsnet-alert 27510] V392 Hya: likely outbursts from standstill
by Taichi Kato 13 Mar '23

13 Mar '23

V392 Hya: likely outbursts from standstill YYYYMMDD(UT) mag observer 20230219.492 148 (Rod Stubbings) 20230223.490 149 (Rod Stubbings) 20230224.506 149 (Rod Stubbings) 20230225.7107 15.33C (Masayuki Moriyama) 20230227.6051 15.20C (Masayuki Moriyama) 20230304.731 148 (Rod Stubbings) 20230310.426 140 (Rod Stubbings) 20230311.2057 14.55cG (Masao Funada) 20230312.428 146 (Rod Stubbings) YYYYMMDD(UT) mag observer 20221020.0897 15.101o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221020.0941 15.091o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221020.1134 15.061o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221020.1185 15.103o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221023.0832 15.000o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221023.0860 14.941o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221023.0910 14.976o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221023.1029 14.988o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221030.3407 15.069c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221030.3461 15.011c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221030.3649 15.081c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221030.3694 15.072c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221102.3378 14.837c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221102.3433 14.841c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221102.3474 14.833c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221102.3621 14.793c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221107.3516 14.234o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221107.3544 14.218o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221107.3571 14.243o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221107.3608 14.208o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221108.0682 14.248o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221108.0710 14.268o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221108.0760 14.248o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221108.0860 14.262o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221108.0997 14.263o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-alert 27505] Gaia23bbc
by Taichi Kato 12 Mar '23

12 Mar '23

Gaia23bbc Possible dwarf nova. http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23bbc/ Gaia23bbc AT2023cwd 2023-03-08 02:02:00 125.15272 -18.52729 15.51 18.23 0.18 unknown 2023-03-10 17:42:18 ~3 mag outburst in red Gaia source with faint GALEX detection

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[vsnet-alert 27508] Re: ASASSN-23bn
by Taichi Kato 12 Mar '23

12 Mar '23

Re: ASASSN-23bn ATLAS detection. YYYYMMDD(UT) mag observer 20230309.0735 14.057o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230309.0771 14.040o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230309.0820 14.051o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230309.0920 14.051o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230310.8416 14.489o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230310.8452 14.455o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230310.8521 14.507o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-alert 27507] Re: Gaia23bbc
by Taichi Kato 12 Mar '23

12 Mar '23

Re: Gaia23bbc After combination with ATLAS data. Likely SS Cyg star. YYYYMMDD(UT) mag observer 20230220.1833 19.156c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230220.1865 18.868c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230220.2215 18.788c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230220.2295 18.984c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230221.0989 <17.715g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230221.1002 <17.479g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230221.1015 <17.413g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230222.2501 <17.443g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230222.2513 <17.433g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230222.2526 <17.577g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230222.9138 18.183o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230222.9170 18.029o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230222.9224 18.091o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230222.9340 18.076o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230223.1804 <17.622g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230223.1817 <17.494g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230223.1830 <17.609g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230224.0663 19.092c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230224.0686 19.137c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230224.0714 18.761c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230224.0852 18.951c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230224.1146 <17.609g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230224.1159 <17.554g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230224.1172 <17.523g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230224.1500 <17.590g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230224.1512 <17.569g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230224.1525 <17.501g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230225.1787 <17.510g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230225.1800 <17.611g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230225.1812 <17.403g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230225.1974 <17.535g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230225.1987 <17.452g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230225.2000 <17.432g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230226.1785 <17.461g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230226.1797 <17.673g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230226.1810 <17.452g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230228.0328 <16.891g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230228.0341 <16.856g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230228.0354 <17.004g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230228.1061 18.025o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230228.1093 18.003o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230228.1165 18.352o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230228.1516 18.113o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230301.1279 <17.064g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230301.1292 <17.204g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230301.1305 <16.952g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230301.1543 <17.164g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230301.1555 <17.062g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230301.1568 <17.018g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230302.1545 <16.805g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230302.1558 <16.939g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230302.1570 <16.833g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230302.8822 18.237o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230302.8937 18.137o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230302.8973 18.134o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230302.9027 17.919o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230303.2580 <16.473g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230303.2592 <16.661g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230303.2605 <16.724g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230304.1407 18.071o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230304.1434 18.245o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230304.1489 18.132o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230304.1642 17.919o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230304.2008 <16.336g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230304.2021 <16.349g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230304.2034 <16.233g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230307.1484 <15.756g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230307.1496 <15.778g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230307.1509 <15.783g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230307.2582 <15.609g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230307.2594 <15.736g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230308.0945 15.571o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230308.1191 15.611o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230308.1222 15.602o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230308.1281 15.596o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230308.9867 15.336g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230308.9879 15.367g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230308.9892 15.496g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230309.9629 15.064o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230309.9661 15.054o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230309.9760 15.090o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230309.9883 15.066o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230310.9342 14.729o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230310.9374 14.685o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230310.9434 14.629o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230311.2782 14.554g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230311.2794 14.516g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230311.2807 14.566g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230311.7886 14.389g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230311.7899 14.390g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230311.7911 14.384g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017))

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[vsnet-alert 27504] ASASSN-23bn
by Taichi Kato 12 Mar '23

12 Mar '23

ASASSN-23bn Bright, large-amplitude transient. ASASSN-23bn --- ------- 7:31:22.43 -45:54:47.6 2023-03-8.88 13.45 SDSS DSS VIZIER ------- CV candidate, no Vizier match, g>17.2 on 2023-03-07.14, g=14.1 on 2023-03-08.25, g=13.8 on 2023-03-08.89.

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[vsnet-alert 27503] NSV 3734 fading
by Taichi Kato 12 Mar '23

12 Mar '23

NSV 3734 fading http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23bbb/ Gaia23bbb AT2023cwc 2023-03-08 02:13:34 116.73117 -9.57521 15.53 13.74 0.09 unknown 2023-03-10 17:42:05 ~1.5 mag dimming in known CV NSV 3734 ATLAS data also recorded slow fading starting from 2022 Nov. No past fading episode in ATLAS, and ASAS-3.

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[vsnet-alert 27502] Rybka2 possible superoutburst
by Taichi Kato 10 Mar '23

10 Mar '23

Rybka2 possible superoutburst UGSU:+E http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23bao/ Gaia23bao AT2023cuw 2023-03-07 04:14:12 337.90592 40.49537 17.10 19.53 1.06 CV 2023-03-09 09:48:25 outburst in known CV Rybka 2 Last superoutburst in 2022 July and supercycle about 300 d (ATLAS data).

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[vsnet-alert 27501] Wils_SDSSJ074859.55+312512.6 superoutburst
by Taichi Kato 08 Mar '23

08 Mar '23

Wils_SDSSJ074859.55+312512.6 superoutburst UGSU+E YYYYMMDD(UT) mag observer 20230305.5949 <156c (Yutaka Maeda) 20230306.0679 15.595o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.0768 15.568o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.0799 15.633o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.0998 15.721o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.3344 15.847o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.3550 15.570o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.6215 <149c (Yutaka Maeda)

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[vsnet-alert 27500] MASTER OT J055845.55+391533.4: oscillation-type rebrightening
by Taichi Kato 08 Mar '23

08 Mar '23

MASTER OT J055845.55+391533.4: oscillation-type rebrightening Itoh-san, Kiyota-san and Vihorlat Observatory team have reported further observations. This object shows oscillation-type rebrightening after the dips. This feature was also present in the past ATLAS data. Strange object.

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[vsnet-alert 27499] Re: Wils_SDSSJ075107.50+300628.4: likely superoutburst
by Taichi Kato 08 Mar '23

08 Mar '23

Re: Wils_SDSSJ075107.50+300628.4: likely superoutburst > Almost superoutburst-only object with a short supercycle. > Superoutburst? in 2022 Oct. Indeed very likely for both. Very few normal outbursts were recorded in ATLAS despite the short supercycle. YYYYMMDD(UT) mag observer 20230302.5894 <156c (Yutaka Maeda) 20230304.5793 <151c (Yutaka Maeda) 20230305.5957 144c (Yutaka Maeda) 20230306.3344 15.172o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.3550 15.124o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.6223 149:c (Yutaka Maeda)

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