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

[vsnet-campaign-dn 17393] ASASSN-23es: SU UMa-type dwarf nova
by Taichi Kato 26 Jun '23

26 Jun '23

ASASSN-23es: SU UMa-type dwarf nova Josch Hambsch has reported observations. Due to the relatively large scatter (probably due to unfavorable weather) and sparse sampling, it was difficult to detect superhumps. An analysis using the entire data yielded a period of 0.07211(3) d (amplitude 0.11 mag).

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[vsnet-campaign-dn 17392] Re: FL Psc started showing superhumps
by Taichi Kato 22 Jun '23

22 Jun '23

Re: FL Psc started showing superhumps > According to observations by Josch Hambsch, this object > started to show ordinary superhumps on June 21 at 12.0 mag, > later than in 2004. This may be the start of stage C superhumps rather than appearance of superhumps. The current outburst had a peak magnitude of 9.7 on June 1. YYYYMMDD(UT) mag observer 20230530.6037 17.467g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230530.6037 <16.982g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230530.6050 <16.977g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230530.6062 <16.854g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230531.5925 10.117g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230531.5925 10.147g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230531.5938 10.147g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230531.5950 10.131g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230601.4129 10.042g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230601.4130 9.673g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230601.4142 9.368g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230601.4155 9.376g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230603.6127 9.942g (ASAS-SN survey (Shappee+2014; Kochanek+2017)) 20230603.6140 9.921g (ASAS-SN survey (Shappee+2014; Kochanek+2017))

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[vsnet-campaign-dn 17391] BraTS-SON-T2-046 = TCPJ17294472-4236232: superhump period
by Taichi Kato 22 Jun '23

22 Jun '23

BraTS-SON-T2-046 = TCPJ17294472-4236232: superhump period Period 0.06166(1) d. Amplitude 0.10 mag. Observers: Josch Hambsch and Peter Starr If this is indeed a WZ Sge star, multiple rebrightenings are expected for this superhump period.

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[vsnet-campaign-dn 17390] AS Pav superhump period
by Taichi Kato 22 Jun '23

22 Jun '23

AS Pav superhump period Period 0.0900(3) d. Amplitude 0.14 mag. Observer: Josch Hambsch. The object already enter the rapid fading phase.

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[vsnet-campaign-dn 17389] TCP J17321088+0807243 superhump period
by Taichi Kato 22 Jun '23

22 Jun '23

TCP J17321088+0807243 superhump period Period 0.06103(4) d. Amplitude 0.19 mag. Observers: Tonny Vanmunster, Itoh-san, Kiyota-san and Josch Hambsch.

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[vsnet-campaign-dn 17388] FL Psc started showing superhumps
by Taichi Kato 22 Jun '23

22 Jun '23

FL Psc started showing superhumps According to observations by Josch Hambsch, this object started to show ordinary superhumps on June 21 at 12.0 mag, later than in 2004.

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[vsnet-campaign-dn 17387] V544 Her faded, but
by Taichi Kato 21 Jun '23

21 Jun '23

V544 Her faded, but According to observations by Itoh-san on June 20, V544 Her faded to 16th mag. It is still unknown whether this means fading to quiescence or a dip which will be followed by rebrightening. Please continue your observations. I haven't been able to detect a periodic signal from observations up to June 18.

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[vsnet-campaign-dn 17386] V551 Sgr possible superoutburst
by Taichi Kato 19 Jun '23

19 Jun '23

V551 Sgr possible superoutburst (Known SU UMa star. Combined magnitudes for ASAS-SN DB) YYYYMMDD(UT) mag observer 20230615.0667 15.844g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230616.0527 15.721g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230616.6708 146C (Masayuki Moriyama) 20230617.2630 14.262g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-campaign-dn 17385] KK Tel likely superoutburst
by Taichi Kato 19 Jun '23

19 Jun '23

KK Tel likely superoutburst (Known SU UMa star. Combined magnitudes for ASAS-SN DB) YYYYMMDD(UT) mag observer 20230613.1852 14.825g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230614.3301 15.315g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230615.3359 14.860g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230616.538 138 (Rod Stubbings) 20230617.1494 13.582g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230617.2622 13.84cG (Masao Funada) 20230618.1379 13.984g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-campaign-dn 17384] Re: FL Psc: overlooked superoutburst?
by Taichi Kato 19 Jun '23

19 Jun '23

Re: FL Psc: overlooked superoutburst? According to observations by Josch Hambsch, no strong superhumps were observed (fading around 11.5-12.0 mag). It is rather strange that the same object showed prominent superhumps already at 11.0-11.5 in 2004.

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