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

[vsnet-newvar 9952] ASASSN-20er most likely superoutburst (almost faded)
by Taichi Kato 01 Apr '23

01 Apr '23

ASASSN-20er most likely superoutburst (almost faded) Superoutburst + rebrightening in 2020 May (ATLAS data). YYYYMMDD(UT) mag observer 20230327.2091 16.435o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.2109 16.531o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.2169 16.464o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.2363 16.555o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230330.0080 19.594c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.2363 18.916o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.2400 18.780o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.2529 19.048o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.2561 19.103o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230401.0006 19.007o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230401.0025 19.189o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230401.0043 18.753o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

1 0

[vsnet-newvar 9951] ASASSN-19adf: SU UMa star
by Taichi Kato 31 Mar '23

31 Mar '23

ASASSN-19adf: SU UMa star ZTF time-resolved data recorded superhumps during the 2019 superoutburst. Superhump period = 0.05556(5) d (stage B). Tamas Tordai also reported single-night data which are consistent with this period.

1 0

[vsnet-newvar 9950] ASASSN-23bx superhump period
by Taichi Kato 31 Mar '23

31 Mar '23

ASASSN-23bx superhump period The superhump period is either 0.05932(5) d or 0.05624(4) d. Observers: Josch Hambsch and Tonny Vanmunster.

1 0

[vsnet-newvar 9949] TCPJ17233734+1902555 ATLAS data
by Taichi Kato 31 Mar '23

31 Mar '23

TCPJ17233734+1902555 ATLAS data ATLAS may have recorded the object still on the rise. http://cbat.eps.harvard.edu/unconf/followups/J17233734+1902555.html YYYYMMDD(UT) mag observer 20230330.3072 17.882o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.5724 15.554o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.5742 15.572o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.5789 15.450o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.5843 15.531o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

1 0

[vsnet-newvar 9948] SDSSJ100515.39+191108.0 fading rather rapidly
by Taichi Kato 31 Mar '23

31 Mar '23

SDSSJ100515.39+191108.0 fading rather rapidly Bright for a normal outburst. Precursor? YYYYMMDD(UT) mag observer 20230326.1163 18.395o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.1503 18.520o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.1535 18.436o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.1786 18.501o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.3452 18.488o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.3502 18.510o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.3540 18.241o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.3645 18.473o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.6222 <149c (Yutaka Maeda) 20230327.3462 13.264o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.3492 13.251o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.3552 13.246o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.3907 13.170o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.6384 125cG (Yutaka Maeda) 20230328.567 133C (Mitsutaka Hiraga) 20230328.6544 132cG (Yutaka Maeda) 20230328.6544 132cG (Yutaka Maeda) 20230328.9399 13.697c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.9431 13.680c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.9579 13.693c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230329.597 145C (Mitsutaka Hiraga)

1 0

[vsnet-newvar 9947] ASASSN-23cc ATLAS+Myy data
by Taichi Kato 31 Mar '23

31 Mar '23

ASASSN-23cc ATLAS+Myy data Possible outburst in 2015 in ATLAS, but it could have been a noise. YYYYMMDD(UT) mag observer 20230319.6298 14.459o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230319.6341 14.415o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230319.6393 14.381o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230319.6507 14.359o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230329.8096 160:C (Masayuki Moriyama) 20230330.6206 16.155o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230330.6245 16.151o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230330.6313 16.119o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

1 0

[vsnet-newvar 9946] ASASSN-23cf ATLAS data
by Taichi Kato 31 Mar '23

31 Mar '23

ASASSN-23cf ATLAS data YYYYMMDD(UT) mag observer 20230325.2600 16.311o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230325.2627 16.201o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230325.2876 16.120o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230325.2927 16.038o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.0578 15.031c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.0934 15.053c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.0977 15.017c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.1029 15.058c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.1159 14.990c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.1386 15.039c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.1497 15.032c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.1534 15.067c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230329.3160 15.557o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230329.3369 15.591o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230329.3397 15.605o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

1 0

[vsnet-newvar 9945] ASASSN-19lb: IW And star
by Taichi Kato 30 Mar '23

30 Mar '23

ASASSN-19lb: IW And star From ATLAS data. IW And state in 2023. Currently in standstill? following oscillation state.

1 0

[vsnet-newvar 9944] ASASSN-19bl: most likely AM CVn
by Taichi Kato 30 Mar '23

30 Mar '23

ASASSN-19bl: most likely AM CVn ATLAS+ZTF. Multiple rebrightenings on fading tail. Superoutbursts in 2019 Jan.-Feb. and 2022 Nov.

1 0

[vsnet-newvar 9943] ASASSN-19ba superoutburst?
by Taichi Kato 30 Mar '23

30 Mar '23

ASASSN-19ba superoutburst? (May be already over) YYYYMMDD(UT) mag observer 20230310.2361 15.182zr (ZTF Alert DC mag (Masci+ 2019)) 20230316.2419 16.180o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230316.2457 16.242o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230316.2515 16.283o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230316.2617 16.180o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

1 0