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

[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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[vsnet-newvar 10062] ASASSN-18ed identification
by Taichi Kato 04 May '23

04 May '23

ASASSN-18ed identification This one appears to be correct. 130120.4 -413603 (2000.0) Gaia_DR3_6139397368696634240 CV (score=0.43) 130120.482 -413603.70 (2000.0) Gaia_DR2_6139397368696634240 plx=0.874(0.357) dismod=10.3 pmra=-118.292(0.534) pmdec=2.290(0.283) G=17.929 BP=17.231 RP=16.798 130120.477 -413603.70 (2000.0) Gaia_EDR3_6139397368696634240 plx=1.381(0.142) dismod=9.3 pmra=-118.751(0.220) pmdec=1.835(0.103) G=19.019 BP=17.749 RP=17.220

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[vsnet-newvar 10061] CRTS J204916.4-031733 possible superoutburst
by Taichi Kato 04 May '23

04 May '23

CRTS J204916.4-031733 possible superoutburst Negative ATLAS data 2 d before. Past superoutburst in 2021 Apr. YYYYMMDD(UT) mag observer 20230422.5508 <18.252g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230425.5430 <18.039g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230503.0365 14.743g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-newvar 10060] CRTS J053012.3-285022 likely superoutburst
by Taichi Kato 04 May '23

04 May '23

CRTS J053012.3-285022 likely superoutburst Precursor + superoutburst. 20230421.9953 <18.254g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230424.0108 19.017c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230424.0262 18.680c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230424.9839 <18.138g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230425.7559 15.351o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.7589 15.302o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.7645 15.268o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.7758 15.204o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.9798 14.346g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230428.7379 16.183o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230428.9825 16.450g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230501.7185 14.431o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.7217 14.448o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.7286 14.415o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.7392 14.327o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.9669 14.511o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.9702 14.452o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.9754 14.392o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230503.9662 14.408g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-newvar 10059] ASASSN-15sn superoutburst
by Taichi Kato 04 May '23

04 May '23

ASASSN-15sn superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20230421.751 <174C (Mitsutaka Hiraga) 20230422.5123 <18.033g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230425.5005 <18.081g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230427.4244 15.930zg (ZTF Alert DC mag (Masci+ 2019)) 20230427.4697 15.964zr (ZTF Alert DC mag (Masci+ 2019)) 20230501.4274 15.769zr (ZTF Alert DC mag (Masci+ 2019)) 20230502.8005 151c (Yutaka Maeda)

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