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

[vsnet-alert 27728] V1006 Cyg unusual state with frequent, short outbursts
by Taichi Kato 11 May '23

11 May '23

V1006 Cyg unusual state with frequent, short outbursts Bright quiescence. YYYYMMDD(UT) mag observer 20230325.5615 16.121g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230327.5977 16.117g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230328.5917 15.631o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230328.5949 15.535o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230328.6009 15.566o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230328.6016 15.171g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230328.6081 15.605o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230328.8512 <152c (Yutaka Maeda) 20230329.4346 15.298zr (ZTF Alert DC mag (Masci+ 2019)) 20230329.4539 15.305zr (ZTF Alert DC mag (Masci+ 2019)) 20230329.8044 158C (Masayuki Moriyama) 20230402.7739 <152c (Yutaka Maeda) 20230402.8069 168C (Masayuki Moriyama) 20230406.5952 16.480o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230406.5984 16.594o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230406.6039 16.674o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230406.6193 16.753o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230407.7803 164:c (Yutaka Maeda) 20230407.8105 164:C (Masayuki Moriyama) 20230408.4737 16.315zr (ZTF Alert DC mag (Masci+ 2019)) 20230408.4746 16.356zr (ZTF Alert DC mag (Masci+ 2019)) 20230408.7621 <160c (Yutaka Maeda) 20230408.8218 170:C (Masayuki Moriyama) 20230409.7764 <157c (Yutaka Maeda) 20230410.4309 15.518zr (ZTF Alert DC mag (Masci+ 2019)) 20230410.4381 15.526zr (ZTF Alert DC mag (Masci+ 2019)) 20230410.4734 15.451zg (ZTF Alert DC mag (Masci+ 2019)) 20230410.4901 15.479zg (ZTF Alert DC mag (Masci+ 2019)) 20230410.6037 15.525o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230410.6244 15.600o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230410.6324 15.586o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230410.6362 15.585o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230410.7743 <144c (Yutaka Maeda) 20230410.8302 156C (Masayuki Moriyama) 20230412.4894 16.040zr (ZTF Alert DC mag (Masci+ 2019)) 20230412.7475 <158c (Yutaka Maeda) 20230414.5127 16.150g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230415.8223 <163C (Masayuki Moriyama) 20230416.5907 16.804o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230416.5941 16.780o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230416.6185 16.815o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230416.6234 16.858o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230416.7432 <158c (Yutaka Maeda) 20230417.4482 16.854zr (ZTF Alert DC mag (Masci+ 2019)) 20230417.4740 16.950zg (ZTF Alert DC mag (Masci+ 2019)) 20230417.7592 <153c (Yutaka Maeda) 20230418.6162 16.149g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230420.4685 16.918zr (ZTF Alert DC mag (Masci+ 2019)) 20230420.4840 16.865zr (ZTF Alert DC mag (Masci+ 2019)) 20230421.3636 16.145g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230421.7810 <157c (Yutaka Maeda) 20230422.4339 17.298c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230422.4543 16.937zg (ZTF Alert DC mag (Masci+ 2019)) 20230422.4558 17.040c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230422.4590 17.378c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230422.4774 16.803c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230422.4783 16.456zr (ZTF Alert DC mag (Masci+ 2019)) 20230422.7552 <152c (Yutaka Maeda) 20230423.4458 16.402zr (ZTF Alert DC mag (Masci+ 2019)) 20230423.4816 16.677zg (ZTF Alert DC mag (Masci+ 2019)) 20230423.4994 15.994g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230424.4516 15.456zr (ZTF Alert DC mag (Masci+ 2019)) 20230424.4785 15.387zg (ZTF Alert DC mag (Masci+ 2019)) 20230424.5636 15.608c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230424.5654 15.552c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230424.5692 15.592c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230424.5743 15.584c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.4479 16.363zr (ZTF Alert DC mag (Masci+ 2019)) 20230426.5466 17.031c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.5498 17.006c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.5560 16.864c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.5643 17.014c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.7541 <156c (Yutaka Maeda) 20230427.4683 16.816zr (ZTF Alert DC mag (Masci+ 2019)) 20230427.6071 16.139g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230427.7838 <142c (Yutaka Maeda) 20230429.4727 16.834zr (ZTF Alert DC mag (Masci+ 2019)) 20230430.7628 <152c (Yutaka Maeda) 20230501.4000 16.825zr (ZTF Alert DC mag (Masci+ 2019)) 20230501.7741 <164c (Yutaka Maeda) 20230502.4221 16.608o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.4447 16.677o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.4689 16.449o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.4822 16.569o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.7063 155:c (Yutaka Maeda) 20230507.4744 15.821g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230508.5571 16.707o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230508.5670 16.593o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230508.5747 16.548o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230509.7009 158:c (Yutaka Maeda)

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[vsnet-alert 27727] ASASSN-18ir likely superoutburst
by Taichi Kato 11 May '23

11 May '23

ASASSN-18ir likely superoutburst Likely supercycle around 1.5 yr (ATLAS+ASAS-SN ver2) YYYYMMDD(UT) mag observer 20230428.0703 <17.385g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230428.1142 <18.156g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230501.9907 16.861o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.9936 16.933o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.0000 16.937o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.1163 16.377g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230503.1351 16.307g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230503.1464 16.696o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230503.1491 16.679o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230503.1546 16.749o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-alert 27726] V415 Lyr possible superoutburst
by Taichi Kato 11 May '23

11 May '23

V415 Lyr possible superoutburst The past light curve looks like that of an SU UMa star with an unresolved brighter companion. If this interpretation is correct, the current outburst looks like a superoutburst. YYYYMMDD(UT) mag observer 20230429.3577 17.114g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230430.7859 <149c (Yutaka Maeda) 20230501.7971 <155c (Yutaka Maeda) 20230507.4282 15.545g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230509.4324 15.644g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230509.7242 <160c (Yutaka Maeda) 20230509.7782 160C (Masayuki Moriyama) 20230510.3641 15.697g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-alert 27725] ASASSN-23dr = AT 2023hsr: possible WZ Sge-type dwarf nova
by Naoto Kojiguchi 09 May '23

09 May '23

ASASSN-23dr = AT 2023hsr: possible WZ Sge-type dwarf nova Large outburst amplitude of more than 8 mag. Gaia quiescent absolute magnitude: M_G=+11.8. Possible WZ Sge-type dwarf nova. TNS: https://www.wis-tns.org/object/2023hsr RA/DEC (2000): 06:22:11.124 -32:36:33.84 Reporting Group: ASAS-SN Discovering Data Source: ASAS-SN Discovery Date: 2023-05-08 00:43:12.000 Discovery Mag: 11.5 Filter: g-Sloan Reporter/s: K. Z. Stanek, for the ASAS-SN team IDs: USNO0525.02348016 062210.973 -323633.44 (2000.0) 19.1 19.7 062211.116 -323633.89 (2000.0) Gaia_DR2_2893005857946801152 plx=3.813(0.207) dismod=7.1 pmra=2.423(0.334) pmdec=-0.799(0.381) G=18.974 BP=19.040 RP=18.779 062211.1 -323633 (2000.0) Gaia_DR3_2893005857946801152 plx=3.7645(0.1598) PM=2.359 pmra=2.225(0.168) pmdec=-0.782(0.178) G=18.927(0.004) BP=19.026(0.03) RP=18.864(0.038) 062211.1 -323633 (2000.0) Gaia_DR3_2893005857946801152 WD (score=0.38) 062211.1 -323633 (2000.0) PS1_DR1_68860955463078947 g=-(-) r=-(-) i=19.2525(0.0155) z=-(-) y=-(-) ASAS-SN Sky Patrol: https://asas-sn.osu.edu/sky-patrol/coordinate/64063544-09e4-46aa-90eb-692e4… ASASSN-23dr 20230506.002 19.397o ATF ASASSN-23dr 20230507.031 <15.873g ASN ASASSN-23dr 20230507.033 <15.723g ASN ASASSN-23dr 20230507.034 <15.740g ASN ASASSN-23dr 20230507.710 14.559o ATF ASASSN-23dr 20230507.716 14.492o ATF ASASSN-23dr 20230507.718 14.434o ATF ASASSN-23dr 20230507.720 14.417o ATF ASASSN-23dr 20230507.730 14.305o ATF ASASSN-23dr 20230507.732 14.284o ATF ASASSN-23dr 20230507.736 14.216o ATF ASASSN-23dr 20230508.030 11.480g ASN ASASSN-23dr 20230508.032 11.448g ASN ASASSN-23dr 20230508.033 11.460g ASN ASASSN-23dr 20230509.020 10.486g ASN ASASSN-23dr 20230509.021 10.492g ASN ASASSN-23dr 20230509.022 10.482g ASN

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[vsnet-alert 27724] V611 Her superoutburst
by Taichi Kato 09 May '23

09 May '23

V611 Her superoutburst Known SU UMa star, but more observations are desired. YYYYMMDD(UT) mag observer 20230426.6536 <165c (Yutaka Maeda) 20230426.7723 <175C (Masayuki Moriyama) 20230426.9968 <17.703g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230427.6859 <140c (Yutaka Maeda) 20230428.3969 <17.659g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230428.3969 <17.557g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230428.9795 <180cG (Masao Funada) 20230429.2331 <17.739g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230429.2331 <18.047g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230429.4549 19.353zg (ZTF Alert DC mag (Masci+ 2019)) 20230429.4650 18.928zr (ZTF Alert DC mag (Masci+ 2019)) 20230430.3319 <17.802g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230430.3319 <18.040g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230430.6623 <153c (Yutaka Maeda) 20230430.7451 <167C (Masayuki Moriyama) 20230501.3880 16.442g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230501.3880 16.941g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230501.6734 <158c (Yutaka Maeda) 20230502.6060 <152c (Yutaka Maeda) 20230505.2172 15.061g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230505.2172 15.212g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230506.065 14.96C (Gary Poyner) 20230506.0665 14.89cG (Masao Funada) 20230507.1589 15.119g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230507.1589 15.194g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230507.1589 15.307g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-alert 27719] AR UMa short-term variations
by Taichi Kato 06 May '23

06 May '23

AR UMa short-term variations Josch Hambsch reported time-resolved observations. In addition to the expected orbital modulation (0.7 mag), QPO-like variations were also recorded, which are often observed in polars.

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[vsnet-alert 27721] Gaia23bqv: possible SU UMa-type outburst
by Taichi Kato 06 May '23

06 May '23

Gaia23bqv: possible SU UMa-type outburst (but probably already faint) http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23bqv/ YYYYMMDD(UT) mag observer 20230414.9836 16.712o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.0058 16.605o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.0098 16.622o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.0131 16.606o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230418.0653 17.338o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230418.0708 17.424o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230418.0748 17.367o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230418.1104 17.410o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.2294 17.738c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.2326 17.835c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.2677 17.654c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.3019 17.553c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.3586 18.326c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.3631 18.398c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.3691 18.477c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.3909 18.575c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-alert 27720] Gaia23brc brightening and fading
by Taichi Kato 06 May '23

06 May '23

Gaia23brc brightening and fading http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23brc/ Fading seems to be not symmetric (expected for microlensing)m YYYYMMDD(UT) mag observer 20230402.1034 17.485o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230402.1052 17.306o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230402.1080 17.340o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230402.1136 17.855o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230403.2936 17.376o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230403.3059 17.314o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230403.3081 17.554o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230403.3123 17.675o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230405.0541 16.574o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230405.0560 16.304o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230405.0592 16.792o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230405.0799 16.272o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230406.2869 15.883o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230406.2888 15.859o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230406.2917 15.858o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230406.3021 15.625o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230408.0560 14.944o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230408.0579 15.280o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230408.0612 15.061o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230408.0664 15.084o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230409.3067 13.837o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230409.3085 13.855o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230409.3113 13.862o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230409.3221 13.809o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.2880 16.394o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.2912 16.525o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.2941 16.597o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.3298 16.462o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.4234 17.217o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.0505 17.678o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-alert 27718] Please check ASASSN-18ace
by Taichi Kato 04 May '23

04 May '23

Please check ASASSN-18ace ASAS-SN ver.2 reported g=14.4 on May 3. There was a superoutburst at g=14.6 on 2018 Dec. 24. No detection since then.

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[vsnet-alert 27717] ASASSN-15jk likely superoutburst
by Taichi Kato 04 May '23

04 May '23

ASASSN-15jk likely superoutburst Type from ATLAS. YYYYMMDD(UT) mag observer 20230428.3344 <18.150g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230428.8166 <17.917g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230429.2133 <18.080g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230501.0887 16.254g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230503.1839 16.376g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230503.7876 16.602g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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