April 2023 - vsnet-alert - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-alert 27584] ASASSN-20en superoutburst
by Taichi Kato 02 Apr '23

02 Apr '23

ASASSN-20en superoutburst YYYYMMDD(UT) mag observer 20230323.3857 16.638o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230323.3898 16.739o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230323.3996 16.723o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230323.4097 16.842o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.3907 17.194o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.3949 17.211o (ATLAS … [View More]

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[vsnet-alert 27583] ASASSN-20er most likely superoutburst (almost faded)
by Taichi Kato 02 Apr '23

02 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 (… [View More]

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[vsnet-alert 27582] SU Tau started fading?
by Taichi Kato 02 Apr '23

02 Apr '23

SU Tau started fading? Sato-san has pointed out the gradual fading. YYYYMMDD(UT) mag observer 20230318.8813 100 (Eddy Muyllaert) 20230319.439 105 (Takuichiro Onishi) 20230319.4497 10.13V (Minoru Sato) 20230319.549 101 (Yoshiyasu Sato) 20230319.8153 99 (Jose Ripero) 20230320.4490 10.18V (Minoru Sato) 20230321.8132 101 (Eddy Muyllaert) 20230325.4272 10.35V (Minoru Sato) 20230326.5031 103cG (Yutaka Maeda) 20230326.5736 104V (Masayuki Moriyama) … [View More]

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[vsnet-alert 27581] ASASSN-23bx superhump period
by Taichi Kato 01 Apr '23

01 Apr '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.

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[vsnet-alert 27580] TCPJ17233734+1902555 ATLAS data
by Taichi Kato 01 Apr '23

01 Apr '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, … [View More]

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[vsnet-alert 27579] V1251 Cyg ordinary superhump
by Taichi Kato 01 Apr '23

01 Apr '23

V1251 Cyg ordinary superhump Itoh-san reported observations on Mar. 31. An ordinary superhump was already present.

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[vsnet-alert 27578] SDSSJ100515.39+191108.0 fading rather rapidly
by Taichi Kato 01 Apr '23

01 Apr '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 … [View More]

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[vsnet-alert 27577] ASASSN-23cc ATLAS+Myy data
by Taichi Kato 01 Apr '23

01 Apr '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) … [View More]

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[vsnet-alert 27576] ASASSN-23cf ATLAS data
by Taichi Kato 01 Apr '23

01 Apr '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 … [View More]

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vsnet-alert April 2023