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

[vsnet-alert 27634] Re: Gaia DR2 6737058388839298432 = Gaia23bly possible superoutburst
by Taichi Kato 15 Apr '23

15 Apr '23

Re: Gaia DR2 6737058388839298432 = Gaia23bly possible superoutburst > Past outbursts in ATLAS sometimes showed a precursor or > rebrightening. Long-Porb SU UMa star? ATLAS probably detected superhumps during the 2022 Aug. outburst and possibly in 2017 Sep.

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[vsnet-alert 27633] Gaia DR2 6737058388839298432 = Gaia23bly possible superoutburst
by Taichi Kato 15 Apr '23

15 Apr '23

Gaia DR2 6737058388839298432 = Gaia23bly possible superoutburst Large-amplitude variable selected by Mowlavi et al. (2021). http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23bly/ Past outbursts in ATLAS sometimes showed a precursor or rebrightening. Long-Porb SU UMa star? YYYYMMDD(UT) mag observer 20230331.0907 17.040c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.0939 17.197c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.0999 17.171c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.1108 17.083c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.1553 17.354c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230402.1113 17.134o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230402.1141 17.009o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230402.1230 16.976o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230402.1361 16.769o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.3325 17.054o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.3418 17.200o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.3460 16.872o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.3489 17.102o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.3517 17.261o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.3555 17.009o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.3658 17.207o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.4139 17.251o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.0659 16.385o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.0686 16.372o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.0740 16.289o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.0842 16.314o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.2812 14.108o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.2841 14.095o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.2892 14.011o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.3102 14.136o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230408.0678 14.013o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230408.0707 14.336o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230408.0863 14.047o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.2791 14.495o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.2819 14.511o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.2871 14.498o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-alert 27632] Gaia DR3 6742641296541311488 long outburst
by Taichi Kato 15 Apr '23

15 Apr '23

Gaia DR3 6742641296541311488 long outburst http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23bma/ SU UMa star not excluded from ATLAS data. YYYYMMDD(UT) mag observer 20230403.3998 19.096o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.4088 18.887o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.0775 17.456o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.0809 17.303o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.0861 17.260o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.1075 17.387o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.1651 17.400o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.1010 17.267o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.1057 17.297o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.1109 17.315o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.1494 17.582o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230407.3134 16.967o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230407.3166 16.970o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230407.3404 16.781o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230408.0655 16.212o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.2833 17.205o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.2861 17.056o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.2889 16.941o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.2918 17.035o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.2922 16.972o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.2980 16.966o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.3155 17.004o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.3192 16.930o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.4202 17.127o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.4206 17.149o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230411.0901 17.171o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230411.0930 17.295o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230411.0989 17.233o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-alert 27631] TCP J12363806+0213281: possible early superhumps
by Taichi Kato 15 Apr '23

15 Apr '23

TCP J12363806+0213281: possible early superhumps Kiyota-san, Sano-san and Itoh-san have reported observations. The object appears to show early superhumps with a period of 0.0547(1) d with an amplitude of 0.07 mag. The weather condition in Japan, however, is not ideal and further observations are need to confirm the period.

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[vsnet-alert 27630] TCP J17233734+1902555 superhump period
by Taichi Kato 14 Apr '23

14 Apr '23

TCP J17233734+1902555 superhump period Kiyota-san, Itoh-san, Josch Hambsch and Tamas Tordai have reported more data. The superhump period has been updated to be 0.05567(3) d.

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[vsnet-alert 27629] AC LMi recent data
by Taichi Kato 14 Apr '23

14 Apr '23

AC LMi recent data YYYYMMDD(UT) mag observer 20230409.5858 <163c (Yutaka Maeda) 20230410.0740 17.850o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230410.0768 17.576o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230410.0828 17.859o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230410.0969 17.593o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230410.5571 <156c (Yutaka Maeda) 20230411.001 <155 (Gary Poyner) 20230411.3934 18.199c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230411.3966 18.231c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230411.4010 17.902c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230411.4041 18.003c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230412.5879 <161c (Yutaka Maeda) 20230413.3951 16.307c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230413.3998 16.211c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230413.4132 16.125c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230413.4195 16.169c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230413.6054 159C (Masayuki Moriyama)

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[vsnet-alert 27628] Gaia23blc: slow outburst? and now fading
by Taichi Kato 14 Apr '23

14 Apr '23

Gaia23blc: slow outburst? and now fading Long-Porb SS Cyg star? YYYYMMDD(UT) mag observer 20230308.3215 17.656o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230308.3322 17.762o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230308.3376 17.949o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230308.3408 17.765o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.3755 17.618o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.3786 17.434o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.3893 17.750o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.3947 17.467o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.4062 17.608o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230315.0315 17.525o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230315.0344 17.118o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230315.0590 17.248o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230315.0754 17.295o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230319.1200 17.995c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230320.3852 16.865o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230320.3951 16.964o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230320.3983 16.964o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230320.4037 17.000o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230323.0792 17.698c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230324.3688 16.668o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230324.3715 16.781o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230324.3769 16.623o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.3827 16.551o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.3995 16.624o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.4023 16.622o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.4134 16.525o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.1127 18.406c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.1329 17.934c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230402.1258 16.642o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230402.1290 16.559o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230402.1439 16.600o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230402.1600 16.619o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.3204 16.749o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.3233 16.672o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.3288 16.773o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.3394 16.717o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230404.1194 16.604o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230404.1222 16.741o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230404.1276 16.657o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230404.1343 16.712o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.0980 16.794o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.1008 16.767o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.1258 16.691o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.1295 16.758o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.3067 16.892o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.3090 16.790o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.3142 16.775o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.3242 16.896o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.3144 17.076o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.3361 17.112o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.3393 17.271o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.3448 16.961o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-alert 27627] AC LMi outburst
by Taichi Kato 14 Apr '23

14 Apr '23

AC LMi outburst Porb=0.07938 d. No superoutburst has yet been recorded. YYYYMMDD(UT) mag observer 20230328.6589 <156c (Yutaka Maeda) 20230329.133 18.43C (Gary Poyner) 20230331.6222 <154c (Yutaka Maeda) 20230331.6915 <166C (Masayuki Moriyama) 20230403.5819 <157c (Yutaka Maeda) 20230406.933 <147 (Gary Poyner) 20230407.122 <16.00C (Gary Poyner) 20230407.5591 <151c (Yutaka Maeda) 20230407.919 <147 (Gary Poyner) 20230408.5693 <163c (Yutaka Maeda) 20230408.6342 168:C (Masayuki Moriyama) 20230408.647 176C (Mitsutaka Hiraga) 20230409.5858 <163c (Yutaka Maeda) 20230410.5571 <156c (Yutaka Maeda) 20230411.001 <155 (Gary Poyner) 20230412.5879 <161c (Yutaka Maeda) 20230413.6054 159C (Masayuki Moriyama)

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[vsnet-alert 27626] V699 Oph superoutburst
by Taichi Kato 14 Apr '23

14 Apr '23

V699 Oph superoutburst YYYYMMDD(UT) mag observer 20230402.6727 <152c (Yutaka Maeda) 20230408.6610 <152c (Yutaka Maeda) 20230409.6758 <151c (Yutaka Maeda) 20230411.674 147 (Rod Stubbings) 20230413.610 147 (Rod Stubbings)

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[vsnet-alert 27625] KS UMa precursor to superoutburst?
by Taichi Kato 13 Apr '23

13 Apr '23

KS UMa precursor to superoutburst? YYYYMMDD(UT) mag observer 20230406.966 <145 (Gary Poyner) 20230407.5623 <144c (Yutaka Maeda) 20230407.939 <145 (Gary Poyner) 20230408.5727 126cG (Yutaka Maeda) 20230408.5727 126cG (Yutaka Maeda) 20230409.5893 132cG (Yutaka Maeda) 20230410.0393 13.84cG (Masao Funada) 20230410.5606 146cG (Yutaka Maeda) 20230410.5606 146cG (Yutaka Maeda) 20230410.6184 150C (Masayuki Moriyama) 20230411.021 154 (Gary Poyner) 20230412.535 <137 (Tsuneo Horie) 20230412.7899 156:C (Masayuki Moriyama)

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vsnet-alert April 2023