April 2023 - vsnet-campaign-dn - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-campaign-dn 17122] ASASSN-23ci ATLAS detection
by Taichi Kato 03 Apr '23

03 Apr '23

ASASSN-23ci ATLAS detection YYYYMMDD(UT) mag observer 20230401.3003 14.328o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230401.3041 15.971o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230401.3120 15.310o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230401.3257 15.225o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.1366 15.639o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.1380 15.685o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.1408 15.609o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-campaign-dn 17121] MGAB-V3593 likely superoutburst
by Taichi Kato 02 Apr '23

02 Apr '23

MGAB-V3593 likely superoutburst Supercycle about 110 d. YYYYMMDD(UT) mag observer 20230328.7515 150C (Masayuki Moriyama) 20230329.8188 15.14C (Masayuki Moriyama) 20230331.8535 152C (Masayuki Moriyama)

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[vsnet-campaign-dn 17120] 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 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-campaign-dn 17119] 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 (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-campaign-dn 17118] ASASSN-19adf: SU UMa star
by Taichi Kato 01 Apr '23

01 Apr '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.

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[vsnet-campaign-dn 17117] 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-campaign-dn 17116] 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, PASP 130, 064505)) 20230331.5843 15.531o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-campaign-dn 17115] 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-campaign-dn 17114] 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 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-campaign-dn 17113] 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) 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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