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

[vsnet-newvar 9841] ASASSN-23bl: possible WZ Sge-type dwarf nova
by Naoto Kojiguchi 03 Mar '23

03 Mar '23

ASASSN-23bl: possible WZ Sge-type dwarf nova Large outburst amplitude of more than 7.3 mag. Possible WZ Sge-type dwarf nova. ASASSN-23bl --- ------- 16:22:35.45 -39:27:36.2 2023-03-2.05 14.39 SDSS DSS VIZIER ------- CV candidate, no Vizier match, g>18.1 on 2023-02-23.26, g=13.6 on 2023-02-24.27, g=14.6 on 2023-02-27.25, g=15.2 on 2023-03-03.39 MPChecker: NO DATA ASAS-SN Sky Patrol: https://asas-sn.osu.edu/sky-patrol/coordinate/bab56412-76d5-4ef6-874e-c1c22… ASASSN-23bl 20230222.052 <17.307g ASN ASASSN-23bl 20230222.053 <17.178g ASN ASASSN-23bl 20230222.055 <17.163g ASN ASASSN-23bl 20230223.119 19.293o ATF ASASSN-23bl 20230223.125 18.599o ATF ASASSN-23bl 20230223.133 19.067o ATF ASASSN-23bl 20230223.136 18.950o ATF ASASSN-23bl 20230223.261 <17.030g ASN ASASSN-23bl 20230223.263 <17.004g ASN ASASSN-23bl 20230223.264 <16.974g ASN ASASSN-23bl 20230224.278 13.561g ASN ASASSN-23bl 20230224.288 13.604g ASN ASASSN-23bl 20230224.289 13.596g ASN ASASSN-23bl 20230224.291 13.602g ASN ASASSN-23bl 20230224.353 13.641cy ATF ASASSN-23bl 20230224.364 13.646cy ATF ASASSN-23bl 20230224.377 13.652cy ATF ASASSN-23bl 20230224.391 13.680cy ATF ASASSN-23bl 20230225.314 14.020g ASN ASASSN-23bl 20230225.315 14.034g ASN ASASSN-23bl 20230225.316 14.024g ASN ASASSN-23bl 20230225.319 14.036cy ATF ASASSN-23bl 20230225.321 14.032cy ATF ASASSN-23bl 20230225.336 14.039g ASN ASASSN-23bl 20230225.337 13.990cy ATF ASASSN-23bl 20230225.338 13.989g ASN ASASSN-23bl 20230225.339 13.980g ASN ASASSN-23bl 20230225.340 14.036cy ATF ASASSN-23bl 20230226.280 14.292g ASN ASASSN-23bl 20230226.281 14.242g ASN ASASSN-23bl 20230226.282 14.313g ASN ASASSN-23bl 20230227.119 14.342o ATF ASASSN-23bl 20230227.122 14.310o ATF ASASSN-23bl 20230227.127 14.326o ATF ASASSN-23bl 20230227.132 14.314o ATF ASASSN-23bl 20230227.252 14.545g ASN ASASSN-23bl 20230227.254 14.522g ASN ASASSN-23bl 20230227.255 14.503g ASN ASASSN-23bl 20230228.030 14.555o ATF ASASSN-23bl 20230228.049 14.567o ATF ASASSN-23bl 20230228.054 14.553o ATF ASASSN-23bl 20230228.059 14.565o ATF ASASSN-23bl 20230228.285 14.759g ASN ASASSN-23bl 20230228.286 14.800g ASN ASASSN-23bl 20230228.288 14.824g ASN ASASSN-23bl 20230301.288 14.937cy ATF ASASSN-23bl 20230301.291 14.944cy ATF ASASSN-23bl 20230301.295 14.929cy ATF ASASSN-23bl 20230301.300 15.009cy ATF ASASSN-23bl 20230302.006 <15.081g ASN ASASSN-23bl 20230302.007 15.017g ASN ASASSN-23bl 20230302.009 15.174g ASN ASASSN-23bl 20230302.056 15.077g ASN ASASSN-23bl 20230302.057 15.069g ASN ASASSN-23bl 20230302.059 15.051g ASN ASASSN-23bl 20230303.113 15.009o ATF ASASSN-23bl 20230303.117 15.093o ATF ASASSN-23bl 20230303.126 15.090o ATF ASASSN-23bl 20230303.398 15.274g ASN ASASSN-23bl 20230303.400 15.233g ASN ASASSN-23bl 20230303.401 15.118g ASN

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[vsnet-newvar 9840] CRTSJ085024.2-235811: neglected AM CVn, on the fading tail of the 2022 superoutburst
by Taichi Kato 02 Mar '23

02 Mar '23

CRTSJ085024.2-235811: neglected AM CVn, on the fading tail of the 2022 superoutburst Numerous rebrightenings and long fading tail. Supercycle about 1 yr and observations during the next superoutburst is wanted. Currently mag 19. YYYYMMDD(UT) mag observer 20221017.3308 15.293o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221017.3331 15.286o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221017.3383 15.222o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221017.3456 15.238o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-newvar 9832] ASASSN-15ny
by Taichi Kato 02 Mar '23

02 Mar '23

ASASSN-15ny True? YYYYMMDD(UT) mag observer 20230227.8624 132:c (Yutaka Maeda)

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[vsnet-newvar 9838] CRTSJ210356.7-214727: overlooked superoutburst in 2022 Dec.
by Taichi Kato 02 Mar '23

02 Mar '23

CRTSJ210356.7-214727: overlooked superoutburst in 2022 Dec. The object reached 14.3 (2020 Nov.) and regular monitoring is recommended. YYYYMMDD(UT) mag observer 20221119.8114 19.368c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221127.7782 15.772c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221127.7824 15.758c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221127.7879 15.763c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221127.7994 15.724c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221130.0242 15.365o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221130.0273 15.366o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221130.0346 15.343o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221130.0450 15.354o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221202.8016 17.456o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221202.8067 17.441o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221202.8099 17.342o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221202.8200 17.329o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221208.0291 15.113o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221208.0296 15.073o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221208.0332 15.041o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221208.0337 15.057o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221208.0400 15.055o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221208.0409 15.015o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221208.0527 15.078o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221213.0342 15.665o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221213.0346 15.390o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221213.0392 15.408o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221213.0396 15.437o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221213.0501 15.430o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221213.0570 15.397o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221213.7809 15.546o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221213.7841 15.483o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221213.7941 15.455o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-newvar 9837] CRTSJ173801.9+354549: most likely AM CVn
by Taichi Kato 01 Mar '23

01 Mar '23

CRTSJ173801.9+354549: most likely AM CVn Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021). Short superoutburst + multiple rebrightenings + fading tail. Supercycle about 250 d.

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[vsnet-newvar 9836] EC12062-3024: IW And
by Taichi Kato 01 Mar '23

01 Mar '23

EC12062-3024: IW And Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021). IW And-type standstill in 2015-2017, ending in 2017 May by brightening. Subtle signs in the recent data, too.

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[vsnet-newvar 9835] Long-lasting plateau in SBS1108+574
by Taichi Kato 01 Mar '23

01 Mar '23

Long-lasting plateau in SBS1108+574 Using ATLAS forced photometry (Tonry et al. 2018; Shingles et al. 2021), I noticed this EI Psc-type object showed long-lasting during some of its superoutbursts. The shape of these superoutbursts somewhat looks like those of standstill-like phase of superoutbursts in some AM CVn-type outbursts (EI Psc stars are between hydrogen-rich and AM CVn stars and this is natural). The unusual behavior in MASTER OT J055845.55+391533.4 may be similarly explained.

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[vsnet-newvar 9834] Re: Wils_SDSSJ124602.02-202302.4 superoutburst?
by Taichi Kato 01 Mar '23

01 Mar '23

Re: Wils_SDSSJ124602.02-202302.4 superoutburst? Indeed superoutburst. 20230220.2598 18.723c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230220.2620 18.520c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230220.2652 18.623c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230220.2702 18.826c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230221.6439 <145c (Yutaka Maeda) 20230223.0003 16.396o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230223.0022 16.456o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230223.0281 16.488o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230223.0339 16.526o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230224.2020 15.486c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230224.2038 15.453c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230224.2089 15.329c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230224.2143 15.217c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230225.6549 <149c (Yutaka Maeda) 20230225.7339 15.33C (Masayuki Moriyama) 20230226.6000 <147c (Yutaka Maeda) 20230226.7593 154C (Masayuki Moriyama) 20230227.0132 15.597o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230227.0173 15.596o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230227.6021 <152c (Yutaka Maeda) 20230227.6157 159C (Masayuki Moriyama) 20230228.2570 15.533c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230228.2588 15.550c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230228.2616 15.563c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-newvar 9833] Wils_SDSSJ124602.02-202302.4 superoutburst?
by Taichi Kato 01 Mar '23

01 Mar '23

Wils_SDSSJ124602.02-202302.4 superoutburst? Known SU UMa star. YYYYMMDD(UT) mag observer 20230221.6439 <145c (Yutaka Maeda) 20230225.6549 <149c (Yutaka Maeda) 20230225.7339 15.33C (Masayuki Moriyama) 20230226.6000 <147c (Yutaka Maeda) 20230226.7593 154C (Masayuki Moriyama) 20230227.6021 <152c (Yutaka Maeda) 20230227.6157 159C (Masayuki Moriyama)

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[vsnet-newvar 9831] ASASSN-17oz bright outburst
by Taichi Kato 01 Mar '23

01 Mar '23

ASASSN-17oz bright outburst (But SS Cyg star) YYYYMMDD(UT) mag observer 20230210.2020 17.351zg (ZTF Alert DC mag (Masci+ 2019)) 20230211.7193 165C (Masayuki Moriyama) 20230215.6003 165C (Masayuki Moriyama) 20230216.540 168C (Mitsutaka Hiraga) 20230217.1344 16.171zg (ZTF Alert DC mag (Masci+ 2019)) 20230217.1612 15.879zr (ZTF Alert DC mag (Masci+ 2019)) 20230221.566 160C (Mitsutaka Hiraga) 20230223.497 128C (Mitsutaka Hiraga) 20230224.521 129C (Mitsutaka Hiraga) 20230224.5890 131C (Masayuki Moriyama) 20230225.531 128C (Mitsutaka Hiraga) 20230226.496 132C (Mitsutaka Hiraga) 20230227.553 129C (Mitsutaka Hiraga)

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