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

[vsnet-alert 27584] ASASSN-20en superoutburst
by Taichi Kato 01 Apr '23

01 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 Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.4023 16.940o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.4074 17.066o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-alert 27583] 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))

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[vsnet-alert 27582] SU Tau started fading?
by Taichi Kato 01 Apr '23

01 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) 20230327.4096 10.52V (Minoru Sato) 20230327.8340 100 (Eddy Muyllaert) 20230328.4183 10.55V (Minoru Sato) 20230328.5680 105V (Masayuki Moriyama) 20230329.4157 10.59V (Minoru Sato) 20230329.8438 100 (Eddy Muyllaert) 20230330.4337 10.66V (Minoru Sato) 20230330.451 104 (Tsuneo Horie) 20230331.437 104 (Tsuneo Horie) 20230331.465 107 (Hiroyuki Maehara) 20230331.5062 106cG (Yutaka Maeda) 20230331.5983 107V (Masayuki Moriyama) 20230401.542 111 (Takuichiro Onishi)

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[vsnet-alert 27581] 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.

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[vsnet-alert 27580] 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))

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[vsnet-alert 27579] V1251 Cyg ordinary superhump
by Taichi Kato 31 Mar '23

31 Mar '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 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)

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[vsnet-alert 27577] 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))

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[vsnet-alert 27576] 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))

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