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

[vsnet-newvar 10072] ASASSN-18in 2018 outburst
by Taichi Kato 11 May '23

11 May '23

ASASSN-18in 2018 outburst A dwarf-nova outburst was clearly present. The true counterpart a background fainter object? YYYYMMDD(UT) mag observer 20180330.3871 17.537o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180330.4045 17.551o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180330.4064 17.581o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180330.4087 17.272o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180415.4528 15.988o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180415.4594 16.041o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180415.4613 16.026o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180417.4414 16.302c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180417.4503 16.271c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180417.4516 16.322c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180417.4555 16.262c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180417.4647 16.225c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180417.4661 16.314c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180421.4381 16.722o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180421.4462 16.835o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180421.4540 16.732o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180425.4266 16.835o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180425.4325 16.892o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180425.4384 16.950o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180425.4494 16.934o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180507.4019 17.230o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180507.4125 17.233o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180507.4143 17.279o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180507.4262 17.243o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180509.3950 17.361o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180509.3964 17.424o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180509.4080 17.435o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180509.4203 17.404o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180512.4031 17.814c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180512.4099 17.865c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180512.4122 17.803c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180512.4159 17.774c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180513.3678 17.550o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180513.3759 17.554o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180513.3845 17.514o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20180513.3921 17.606o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-newvar 10071] 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-newvar 10070] 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-newvar 10069] 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-newvar 10068] ASASSN-18si: double superoutburst
by Taichi Kato 04 May '23

04 May '23

ASASSN-18si: double superoutburst According to ASAS-SN ver.2, this object showed double superoutburst. Considering the large amplitude, this object is likely a WZ Sge star (period bouncer). Berto Monard reported time series data on 2018 Aug. 22 (first outburst) without clear evidence for superhumps.

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[vsnet-newvar 10067] 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-newvar 10066] 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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[vsnet-newvar 10065] ASASSN-15hj: IW And star
by Taichi Kato 04 May '23

04 May '23

ASASSN-15hj: IW And star ATLAS + ASAS-SN ver.2 Typical IW And behavior in 2017. Additional standstills with terminal brightening in recent years.

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[vsnet-newvar 10064] MASTER OT J203421.90+120656.9: yet another object with dip currently in likely superoutburst
by Taichi Kato 04 May '23

04 May '23

MASTER OT J203421.90+120656.9: yet another object with dip currently in likely superoutburst Behavior very similar to MASTER OT J055845.55+391533.4 and MASTER OT J172758.09+380021.5. Supercycle 65 d in 2022. See https://ui.adsabs.harvard.edu/abs/2023arXiv230407695K YYYYMMDD(UT) mag observer 20230420.3883 18.352c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230420.3902 18.293c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230420.4054 18.349c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230420.4222 18.376c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230421.4522 17.230zg (ZTF Alert DC mag (Masci+ 2019)) 20230421.4679 17.523zr (ZTF Alert DC mag (Masci+ 2019)) 20230423.4438 17.830zr (ZTF Alert DC mag (Masci+ 2019)) 20230423.4752 17.561zg (ZTF Alert DC mag (Masci+ 2019)) 20230426.4269 18.398zg (ZTF Alert DC mag (Masci+ 2019)) 20230426.4706 18.765zr (ZTF Alert DC mag (Masci+ 2019)) 20230429.3813 18.389c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.3845 18.728c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.3906 18.475c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.3988 18.714c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.4257 18.596c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.1380 18.780o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.1485 18.950o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.4231 18.241zr (ZTF Alert DC mag (Masci+ 2019)) 20230501.4630 17.983zg (ZTF Alert DC mag (Masci+ 2019)) 20230502.3294 18.749o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.3326 19.164o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.3381 18.897o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-newvar 10063] ASASSN-18ed outburst
by Taichi Kato 04 May '23

04 May '23

ASASSN-18ed outburst Subtype unknown. Long outburst. YYYYMMDD(UT) mag observer 20230417.9393 18.043o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.9427 17.956o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.9500 18.312o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.9836 18.251o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.1710 19.054c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.1822 19.091c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.2107 19.003c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.2150 19.351c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.3181 16.127c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.3213 16.232c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.3329 16.120c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.3382 16.032c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.9229 15.567o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.9267 15.572o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.9327 15.599o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.9450 15.882o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230428.9230 15.704o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230428.9273 15.737o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230428.9330 15.769o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230428.9432 15.875o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.9091 16.245o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.9123 16.198o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.9178 16.266o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.9513 16.091o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.2363 16.178o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.2392 16.111o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.2564 16.070o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.2736 16.204o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.8921 16.314o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.8945 16.314o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.8949 16.329o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.8976 16.345o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.9006 16.366o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.9107 16.410o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.9117 16.394o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.9238 16.421o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.8956 16.558o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.8984 16.555o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.9039 16.367o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.9086 16.374o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.9122 16.365o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.9141 16.389o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.9192 16.578o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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