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

[vsnet-newvar 10163] TCP J17321088+0807243 up to now
by Taichi Kato 15 Jun '23

15 Jun '23

TCP J17321088+0807243 up to now Looks like a WZ Sge-type outburst. Superhumps have not yet been detected. YYYYMMDD(UT) mag observer 20230531.633 <140c (Minoru Yamamoto) 20230531.714 14.83B (Hiroshi Itoh) 20230531.714 14.84V (Hiroshi Itoh) 20230531.715 14.87Rc (Hiroshi Itoh) 20230531.715 14.89Ic (Hiroshi Itoh) 20230602.8120 154C (Masayuki Moriyama) 20230602.9440 15.317o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230602.9899 155cG (Masao … [View More]

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[vsnet-newvar 10162] ASASSN-19ct still brighter (AM CVn)
by Taichi Kato 15 Jun '23

15 Jun '23

ASASSN-19ct still brighter (AM CVn) Following superoutburst in late May. YYYYMMDD(UT) mag observer 20230612.510 151 (Rod Stubbings) 20230613.1329 14.942g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230613.1567 14.955g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230613.1813 14.89cG (Masao Funada) 20230614.0905 14.599g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230614.1422 14.307g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-newvar 10161] ASASSN-22ak faded again
by Taichi Kato 13 Jun '23

13 Jun '23

ASASSN-22ak faded again According to observations by Josch Hambsch, ASASSN-22ak faded again to 19-20 mag on June 12.

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[vsnet-newvar 10160] Re: BraTS-SON-T2-046 = TCP J17294472-4236232 still bright
by Taichi Kato 13 Jun '23

13 Jun '23

Re: BraTS-SON-T2-046 = TCP J17294472-4236232 still bright Looks likely ordinary superhumping phase of a WZ Sge star currently. YYYYMMDD(UT) mag observer 20230505.9361 16.837o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230527.0835 12.473c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230527.1198 12.511c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230527.1198 12.547c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230527.1497 12.… [View More]

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[vsnet-newvar 10159] BraTS-SON-T2-046 = TCP J17294472-4236232 still bright
by Taichi Kato 13 Jun '23

13 Jun '23

BraTS-SON-T2-046 = TCP J17294472-4236232 still bright Time-resolved photometry is encouraged. YYYYMMDD(UT) mag observer 20230329.3119 17.481o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.9482 16.853o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230505.9361 16.837o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230527.0835 12.473c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230527.1198 12.511c (ATLAS Forced Photometry (… [View More]

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[vsnet-newvar 10158] ASASSN-19ct rebrightening or standstill
by Taichi Kato 12 Jun '23

12 Jun '23

ASASSN-19ct rebrightening or standstill AM CVn star + UGZ. YYYYMMDD(UT) mag observer 20230606.8855 14.592g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230606.9879 14.793g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230607.1534 15.122g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230607.9843 15.106g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230608.1438 15.299g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; … [View More]

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[vsnet-newvar 10157] ASASSN-22ak rebrightening
by Taichi Kato 12 Jun '23

12 Jun '23

ASASSN-22ak rebrightening Josch Hambsch has reported observations. The object returned to the bright state on June 9-10 and was still bright on the next night.

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[vsnet-newvar 10156] MisV1449: orbital and superhump periods
by Taichi Kato 11 Jun '23

11 Jun '23

MisV1449: orbital and superhump periods Using ZTF data, I obtained an orbital period of 0.1239497(1) d (very clear ellipsoidal variation, 0.17 mag). Tonny Vanmunster and Josch Hambsch reported observations. The superhump period is 0.1333(2) d. This superhump excess (stage B) corresponds to q=0.326.

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[vsnet-newvar 10155] ASASSN-23el: new SU UMa star
by Taichi Kato 11 Jun '23

11 Jun '23

ASASSN-23el: new SU UMa star Berto Monard has reported observations. The object shows superhumps (0.19 mag) with a period of 0.0776(2) d. At least not an extreme WZ Sge star.

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[vsnet-newvar 10154] ASASSN-22ak sudden fading
by Taichi Kato 09 Jun '23

09 Jun '23

ASASSN-22ak sudden fading Josch Hambsch detected a sudden fading on June 8 (16.2 to 18.0 in one day). The object was still fading. No major rebrightenings were recorded after past outbursts.

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