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

[vsnet-alert 27937] RU Hor superoutburst
by Taichi Kato 09 Aug '23

09 Aug '23

RU Hor superoutburst (But near the end) YYYYMMDD(UT) mag observer 20230723.0594 <18.418g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230723.3235 <18.396g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230726.3162 13.876g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230728.3117 13.835g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230730.3163 13.791g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230731.3003 13.985g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230801.2995 14.071g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230802.0480 14.307g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230802.3030 14.330g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230803.2886 14.446g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230805.0309 14.757g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230805.487 141 (Rod Stubbings) 20230807.0224 14.822g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230807.540 143 (Rod Stubbings) 20230808.0889 14.929g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230808.560 145 (Rod Stubbings)

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[vsnet-alert 27936] TCP J16294031-4022063: superhump period
by Taichi Kato 07 Aug '23

07 Aug '23

TCP J16294031-4022063: superhump period Superhump period is 0.05378(1) d (shorter one-day alias is less likely considering the Porb distribution of CVs). Observers: Josch Habmsch

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[vsnet-alert 27935] PNV J19030433-3102187: superhump period
by Taichi Kato 07 Aug '23

07 Aug '23

PNV J19030433-3102187: superhump period The object apparently started to show superhumps on Aug. 1. The current mean period is 0.05777(2) d (amplitude 0.15 mag). Observers: Itoh-san, Josch Habmsch, Greg Bolt

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[vsnet-alert 27934] TCP J16420534+8156125: period of early superhumps
by Taichi Kato 07 Aug '23

07 Aug '23

TCP J16420534+8156125: period of early superhumps P=0.06087(1) d. Typical double-wave modulations Amplitude 0.06 mag. The period suggests a WZ Sge star with multiple rebrightenings. Observers: Itoh-san, Stephen Brincat, Kiyota-san, Magnus Larsson, Tonny Vanmunster.

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[vsnet-alert 27933] Vend51 = AT 2023oom: new possible nova in the Andromeda galaxy?
by FIDRICH Robert 06 Aug '23

06 Aug '23

Dear friends, I found a 19.5 magnitudes bright extragalactic nova candidate on my 10x120s stacked images made with Luminance filter using the 0.51m telescope (T11) of UDRO on 2023 August 5 09:02UT. Sprectroscopy, precise astrometry and follow-up observations are urgently needed! More details: http://vendegcsillagkereso.blogspot.com/2023/08/nwew-possible-nova-in-andro… https://www.wis-tns.org/object/2023oom http://www.cbat.eps.harvard.edu/unconf/followups/J00465260+4201428.html Clear skies, Robert Fidrich HAA/VSS

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[vsnet-alert 27932] PNV J19030433-3102187: ordinary superhumps (WZ Sge)
by Taichi Kato 04 Aug '23

04 Aug '23

PNV J19030433-3102187: ordinary superhumps (WZ Sge) The most recent data by Itoh-san on Aug. 3 clearly showed ordinary superhumps. Long waiting time is consistent with the WZ Sge-type classification. (We have received observations from Josch Hambsch, which have not yet been analyzed. More details later).

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[vsnet-alert 27929] TCP J16420534+8156125: most likely WZ Sge star
by Taichi Kato 03 Aug '23

03 Aug '23

TCP J16420534+8156125: most likely WZ Sge star Itoh-san has reported observations. Although the data were somewhat noisy, there appeared to be early superhumps with a period of 0.0610 d and an amplitude of 0.05 mag.

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[vsnet-alert 27930] ASASSN-23gd strange brightening
by Taichi Kato 03 Aug '23

03 Aug '23

ASASSN-23gd strange brightening ASASSN-23gd --- ------- 17:24:44.2 -58:17:42.5 2023-07-28.16 14.53 SDSS DSS VIZIER ------- increased activity in variable star, matches to GAIA DR3 G=14.1, g>17.3 on 2023-07-15.27, g=15.3 on 2023-07-17.25, g=14.7 on 2023-07-25.03. YYYYMMDD(UT) mag observer 20230610.9368 14.132o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230610.9396 14.143o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230610.9720 14.072o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230610.9761 14.218o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230610.9812 14.106o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230611.0056 14.114o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230611.0102 14.096o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230612.2174 14.143c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230612.2224 14.146c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230612.2321 14.133c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230612.2349 14.141c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230612.2426 14.139c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230612.2528 14.121c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230612.2556 14.110c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230622.9504 14.017o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230622.9540 14.022o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230622.9604 14.015o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230622.9802 13.993o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230630.1581 13.708o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230630.1608 13.711o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230630.1663 13.759o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230630.1691 13.933o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230630.1728 13.953o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230630.1775 13.796o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230630.1779 13.969o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230630.2111 14.098o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230701.9004 13.925o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230701.9037 13.939o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230701.9399 13.947o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230701.9684 13.942o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230704.9351 13.815o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230704.9382 13.806o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230704.9440 13.806o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230704.9527 13.802o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230704.9567 13.816o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230704.9577 13.813o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230706.1638 13.612o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230706.1670 13.621o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230706.1720 13.637o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230706.1759 13.643o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230706.1786 13.634o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230706.1832 13.628o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230706.1851 13.651o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230710.9352 13.827c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230710.9385 13.812c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230710.9461 13.796c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230710.9564 13.791c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230713.8816 13.816c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230713.8848 13.827c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230713.8912 13.830c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230713.8930 13.829c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230713.8958 13.839c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230713.9019 13.843c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230713.9042 13.839c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230713.9212 13.896c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230716.8981 14.082c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230716.9013 14.074c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230716.9142 14.076c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230716.9176 14.077c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230716.9185 14.074c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230716.9277 14.070c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230716.9287 14.068c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230716.9344 13.991c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230722.8831 13.800c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230722.8863 13.796c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230722.8928 13.816c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230722.9048 13.834c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230730.1205 13.697o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230730.1238 13.693o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230730.1312 13.664o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230730.1639 13.682o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230731.9853 13.934o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230731.9881 13.425o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230801.0028 13.741o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230801.0130 13.727o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-alert 27928] TCP J16420534+8156125 ATLAS detection
by Taichi Kato 02 Aug '23

02 Aug '23

TCP J16420534+8156125 ATLAS detection YYYYMMDD(UT) mag observer 20230729.3508 18.834o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230729.3656 18.478o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230731.3159 12.996o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230731.3191 13.006o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230731.3291 13.031o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230731.3343 13.054o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230731.3598 12.995o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230731.3631 12.989o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230731.3685 12.973o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-alert 27926] IPHAS J013840.58+580811.2: current and 2020 outbursts (likely super)
by Taichi Kato 02 Aug '23

02 Aug '23

IPHAS J013840.58+580811.2: current and 2020 outbursts (likely super) YYYYMMDD(UT) mag observer 20230627.5435 <18.340g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230630.5504 <18.320g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230725.5861 14.380c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230725.5883 14.344c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230725.5915 14.355c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230725.6032 14.406c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230727.5336 14.833c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230727.5368 14.884c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230727.5444 14.894c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230727.5584 14.883c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230729.5544 15.023o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230729.5576 14.952o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230729.5726 15.159o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 2020 (rapid fading suggests an SU UMa-type superoutburst) YYYYMMDD(UT) mag observer 20200719.5053 <18.365g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200720.5508 <18.762g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200720.5972 19.788o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200722.6159 <18.143g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200723.3783 <18.100g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200723.5375 <18.528g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200724.3806 <17.868g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200728.3704 15.288g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200728.4769 15.400g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200728.5797 15.323o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200728.5830 15.352o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200728.5885 15.392o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200728.6057 15.236o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200729.3692 15.439g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200730.3688 15.577g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200730.4613 15.596g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200730.6013 15.568c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200730.6114 15.547c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200730.6197 15.618c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200730.6294 15.523c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200731.3865 15.851g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200731.4201 15.684g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200801.3600 15.706g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200801.5489 15.920g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200801.5782 15.931o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200801.5853 15.928o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200801.5895 15.954o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200801.6111 15.951o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200802.3558 16.212g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200803.5814 16.041o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200803.5846 16.042o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200803.5959 16.082o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200805.3930 15.985g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200806.4194 16.184g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200807.5109 16.486o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200807.5154 16.442o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200807.5206 16.448o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200807.5325 16.552o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200808.3365 <17.180g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200808.4547 <17.431g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200809.3395 <17.177g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200809.4959 <17.569g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200809.5320 18.599o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200809.5339 18.597o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200809.5366 18.570o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200809.5408 18.470o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200809.5418 18.752o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200811.2897 <17.890g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200811.4742 <18.055g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200813.4166 <18.324g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200813.4658 <18.320g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200813.5673 19.450o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200813.5701 19.249o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200813.5779 19.251o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200817.4405 <18.406g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20200817.5466 19.282o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20200819.4397 <18.535g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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2024

2023

2022

2021

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