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

[vsnet-alert 27880] Follow-up CCD observations of TCP J16272388-4601564
by Filipp Romanov 03 Jul '23

03 Jul '23

Hello! I am attaching my follow-up observations of TCP J16272388-4601564 (classified as a Galactic classical nova in the ATel #16111 https://www.astronomerstelegram.org/?read=16111 ). Observer: Filipp Romanov (AAVSO). Remotely using iTelescope.Net T72 (0.51-m f/6.8 Corrected Dall-Kirkham + CCD) of Deep Sky Chile at Rio Hurtado Valley, Chile. Exposures: 300 sec. for each image. TCP J16272388-4601564 20230703.17345 12.042I RFD 0.008 TCP J16272388-4601564 20230703.17240 12.032I RFD 0.008 TCP J16272388-4601564 20230703.17137 12.005I RFD 0.012 TCP J16272388-4601564 20230703.17024 13.642R RFD 0.008 TCP J16272388-4601564 20230703.16919 13.623R RFD 0.007 TCP J16272388-4601564 20230703.16817 13.661R RFD 0.010 TCP J16272388-4601564 20230703.16689 17.170B RFD 0.083 TCP J16272388-4601564 20230703.16342 17.208B RFD 0.105 TCP J16272388-4601564 20230703.16239 17.047B RFD 0.098 TCP J16272388-4601564 20230703.16125 15.437V RFD 0.033 TCP J16272388-4601564 20230703.16020 15.441V RFD 0.022 TCP J16272388-4601564 20230703.15917 15.472V RFD 0.017 TCP J16272388-4601564 20230703.15636 12.004I RFD 0.005 TCP J16272388-4601564 20230703.15226 13.643R RFD 0.005 TCP J16272388-4601564 20230703.14808 17.228B RFD 0.063 TCP J16272388-4601564 20230703.14387 15.451V RFD 0.016 With best wishes, Filipp.

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[vsnet-alert 27879] HO Del superoutburst
by Taichi Kato 03 Jul '23

03 Jul '23

HO Del superoutburst (Known SU UMa star) YYYYMMDD(UT) mag observer 20230623.0146 <144 (Eddy Muyllaert) 20230623.4563 16.066g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230624.0194 137 (Eddy Muyllaert) 20230624.033 139 (Gary Poyner) 20230625.0222 136 (Eddy Muyllaert) 20230625.056 138 (Gary Poyner) 20230625.139 14.03C (Gary Poyner) 20230625.1402 14.07cG (Masao Funada) 20230625.4061 13.763g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230626.060 140 (Gary Poyner) 20230628.1662 13.935g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230628.2162 13.997g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230628.2689 13.791g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230629.3589 14.120g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230630.3508 14.202g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230630.3620 14.19cG (Masao Funada) 20230701.3654 14.62cG (Masao Funada) 20230701.3676 14.293g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-alert 27878] ASASSN-15aq superoutburst
by Taichi Kato 03 Jul '23

03 Jul '23

ASASSN-15aq superoutburst YYYYMMDD(UT) mag observer 20230623.0403 17.860g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230624.2844 <18.036g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230628.2786 13.812g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230629.3028 13.653g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230630.2952 13.469g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230701.3827 13.69cG (Masao Funada) 20230702.0130 13.574g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230702.2698 13.707g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-alert 27877] Re: FL Psc: rapid fading on June 26
by Taichi Kato 01 Jul '23

01 Jul '23

Re: FL Psc: rapid fading on June 26 Recent data: YYYYMMDD(UT) mag observer 20230622.2089 123cG (Masao Funada) 20230623.210 12.11C (Gary Poyner) 20230623.5319 12.123g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230624.197 12.20C (Gary Poyner) 20230625.208 12.38C (Gary Poyner) 20230626.5207 13.652g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230627.208 14.75C (Gary Poyner) 20230628.3570 15.245g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-alert 27876] V803 Cen another superoutburst
by Taichi Kato 01 Jul '23

01 Jul '23

V803 Cen another superoutburst Josch Hambsch reported further observations. Another superoutburst started on June 25-26 and superhumps are clearly present.

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[vsnet-alert 27875] V725 Aql rebrightening on June 29
by Taichi Kato 01 Jul '23

01 Jul '23

V725 Aql rebrightening on June 29 Josch Hambsch reported further observations. There was a rebrightening at 15.7 mag on June 29 (it was already fading).

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[vsnet-alert 27874] FL Psc: rapid fading on June 26
by Taichi Kato 01 Jul '23

01 Jul '23

FL Psc: rapid fading on June 26 Josch Hambsch reported further observations. The object started fading on June 25 and now at mag 15.0. We probably observed the growth of stage C superhumps and the behavior is not particularly different from the 2004 superoutburst. A rebrightening is expected.

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[vsnet-alert 27873] 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-alert 27872] 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-alert 27871] 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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