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

[vsnet-alert 27882] PNV J18553862+1457343: new WZ Sge-type dwarf nova
by Taichi Kato 07 Jul '23

07 Jul '23

PNV J18553862+1457343: new WZ Sge-type dwarf nova Early superhumps: P=0.06080(4) d, amplitude 0.04 mag. Ordinary superhumps (stage A?): P=0.06282(10) d, 0.07 mag. Corresponding q=0.088 Likely period bouncer with multiple rebeightenings. Observers: Itoh-san, Stephen Brincat, Josch Hambsch, Tamas Tordai

1 0

[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.

1 1

[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))

1 0

[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))

1 0

[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))

1 0

[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.

1 0

[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).

1 0

[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.

1 0