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

[vsnet-alert 26237] ASASSN-17ik: new SU UMa-type dwarf nova
by Taichi Kato 13 Sep '21

13 Sep '21

ASASSN-17ik: new SU UMa-type dwarf nova Tamas Tordai has reported observations. The object showed superhumps on Sep. 9. The period was 0.0591(6) d and the amplitude was 0.14 mag. This confirms the suggestion in vsnet-alert 26221.

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[vsnet-alert 26236] DDE 139 outburst
by Taichi Kato 10 Sep '21

10 Sep '21

DDE 139 outburst YYYYMMDD(UT) mag observer 20210622.2109 20.197zr (Zwicky Transient Facility (Masci et al., 2019)) 20210628.1906 20.372zr (Zwicky Transient Facility (Masci et al., 2019)) 20210704.2402 16.218zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210704.2404 16.218zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210706.2116 17.563zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210706.2118 17.563zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-alert 26235] AXJ1853.3-0128: bright outburst in 2019 Aug.
by Taichi Kato 10 Sep '21

10 Sep '21

AXJ1853.3-0128: bright outburst in 2019 Aug. ZTF data. Reached 12.9 mag. The duration is that of a normal outburst of this orbital period, not a short IP-type outburst. Should be reclassified as UG+DQ.

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[vsnet-alert 26234] MGAB-V305 possible superoutburst
by Taichi Kato 10 Sep '21

10 Sep '21

MGAB-V305 possible superoutburst Type from ZTF data. YYYYMMDD(UT) mag observer 20210908.2028 16.555zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-alert 26233] V544 Her double outburst!
by Taichi Kato 10 Sep '21

10 Sep '21

V544 Her double outburst! Precusor on Aug. 28? The current outburst may be a superoutburst. Time-resolved photometry is encouraged. This object is suspected to be an SU UMa star above the period gap. See: https://ui.adsabs.harvard.edu/abs/2019PASJ...71L...4K/abstract YYYYMMDD(UT) mag observer 20210819.5030 <156c (Yutaka Maeda) 20210820.5016 <146c (Yutaka Maeda) 20210827.5030 151:c (Yutaka Maeda) 20210828.1876 15.252zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210828.2713 15.354zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210828.901 15.30C (Gary Poyner) 20210828.9028 15.22C (Masao Funada) 20210829.4567 157:cG (Yutaka Maeda) 20210830.8756 16.63C (Masao Funada) 20210831.2067 16.965zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210831.4373 <164c (Yutaka Maeda) 20210831.5071 <166C (Masayuki Moriyama) 20210903.2085 17.666zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210907.2273 15.298zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210909.1497 15.498zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-alert 26232] DDE169 outburst
by Taichi Kato 10 Sep '21

10 Sep '21

DDE169 outburst YYYYMMDD(UT) mag observer 20210729.626 <168C (Mitsutaka Hiraga) 20210731.3827 17.484zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210731.3828 17.484zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210731.4559 17.455zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210731.4559 17.494zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210802.4490 17.614zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210808.3674 18.082zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210808.3675 18.082zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210909.3836 15.073zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-alert 26231] CRTS J202857.1-061803 possible superoutburst
by Taichi Kato 10 Sep '21

10 Sep '21

CRTS J202857.1-061803 possible superoutburst SU UMa candidate (from ZTF data). YYYYMMDD(UT) mag observer 20210828.4653 <148c (Yutaka Maeda) 20210828.5732 <169C (Masayuki Moriyama) 20210908.1900 15.009zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210909.3393 15.028zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-alert 26230] CRTS J080853.7+355053 outburst
by Taichi Kato 10 Sep '21

10 Sep '21

CRTS J080853.7+355053 outburst SU UMa candidate (from ZTF data). YYYYMMDD(UT) mag observer 20210908.4975 16.435zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210908.5000 16.481zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210908.5026 16.494zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210908.5076 16.490zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-alert 26229] HY Psc (faint) superoutburst
by Taichi Kato 09 Sep '21

09 Sep '21

HY Psc (faint) superoutburst (May be saturated?) YYYYMMDD(UT) mag observer 20210827.3756 17.890zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210827.3757 17.890zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210827.8174 <155c (Yutaka Maeda) 20210828.5604 <159c (Yutaka Maeda) 20210829.2823 17.945zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210829.2825 17.945zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210902.3156 14.319zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210904.2587 14.277zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210904.2589 14.277zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210904.2997 14.222zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-alert 26228] MASTER OT J203824.15+174242.3 most likely superoutburst
by Taichi Kato 09 Sep '21

09 Sep '21

MASTER OT J203824.15+174242.3 most likely superoutburst Type from ZTF data. Supercycle about 140 d. YYYYMMDD(UT) mag observer 20210901.2764 21.080zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210903.3009 16.345zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210903.3319 16.551zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210903.3320 16.551zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210905.2476 16.684zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210905.2478 16.684zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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