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

[vsnet-alert 27039] GX Cas (UGSU) outburst
by Kirill Sokolovsky 20 Aug '23

20 Aug '23

The UGSU-type dwarf nova GX Cas is in outburst according to NMW survey photometry (135mm f/2.0 lens + unfiltered ST-8300M CCD): 2022-11-13.7397 2459897.2397 13.4 CV AAVSO observer KLO reports visual observation of this outburst: 2022-11-12.9520 2459896.4520 13.6 Vis. ASAS-SN photometry (latest observation is quiescence on 2022-11-12.165): https://asas-sn.osu.edu/sky-patrol/coordinate/7c8f8333-01a3-49aa-ba14-08b07… VSX record for GX Cas https://www.aavso.org/vsx/index.php?view=detail.top&oid=6537 Best wishes, Kirill Sokolovsky, Stanislav Korotkiy, Olga Smolyankina, Anna Prokudina, Sergei Ostapenko

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[vsnet-alert 27796] ASASSN-22ak superhumps (grown)
by Taichi Kato 30 May '23

30 May '23

ASASSN-22ak superhumps (grown) Josch Hambsch has reported new observations. Superhumps have grown and are now directly visible in the light curve (associated with general brightening particularly since May 23). The current period is 0.042920(7) d (same as in vsnet-alert 27777) with a profile typical of ordinary superhumps (amplitude 0.09 mag).

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[vsnet-alert 27795] Re: ASASSN-15hn: possible superoutburst
by Taichi Kato 30 May '23

30 May '23

Re: ASASSN-15hn: possible superoutburst > First superoutburst since 2015? May be a WZ Sge star. ATLAS also detected this outburst. YYYYMMDD(UT) mag observer 20230524.0507 <18.013g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230525.0469 <17.674g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230527.0391 14.043g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230527.7100 14.320o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230527.7133 14.333o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230527.7289 14.309o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.0422 14.106g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-alert 27794] ASASSN-15px superoutburst
by Taichi Kato 30 May '23

30 May '23

ASASSN-15px superoutburst YYYYMMDD(UT) mag observer 20230505.3902 <16.411g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230506.3657 <17.032g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230508.1268 <16.072g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230509.3648 <16.965g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230519.3414 15.917o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230519.3447 16.305o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230519.3585 16.190o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230519.3614 15.822o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.0577 15.999c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.0789 16.134c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.0817 16.156c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230524.0931 16.188c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230527.0938 16.487c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230527.0953 16.483c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230527.1017 16.571c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-alert 27793] ASASSN-15ij outburst
by Taichi Kato 30 May '23

30 May '23

ASASSN-15ij outburst Subtype unknown. YYYYMMDD(UT) mag observer 20230516.0037 <17.837g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230517.9956 17.591g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230518.9990 <17.267g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230519.9949 <16.607g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230520.9946 <17.338g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230523.9798 18.094g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230524.9797 <17.824g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230526.9712 15.108g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230527.9700 14.836g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-alert 27792] ASASSN-15hn: possible superoutburst
by Taichi Kato 30 May '23

30 May '23

ASASSN-15hn: possible superoutburst First superoutburst since 2015? May be a WZ Sge star. YYYYMMDD(UT) mag observer 20230520.7775 <18.298g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230524.0507 <18.013g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230525.0469 <17.674g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230527.0391 14.043g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230528.0422 14.106g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-alert 27791] ASASSN-14jj: possible superoutburst
by Taichi Kato 30 May '23

30 May '23

ASASSN-14jj: possible superoutburst The 2021 Mar. outburst looked like a superoutburst (ASAS-SN DB). YYYYMMDD(UT) mag observer 20230526.3435 <18.036g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230526.9312 <18.124g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230527.0101 19.253c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230527.0115 19.323c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230527.0186 19.638c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230527.1338 <17.148g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230527.3509 <17.273g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230527.9190 16.059g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230528.1628 15.942g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230528.1717 15.810g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-alert 27790] ASASSN-14mt: most likely superoutburst (ER UMa)
by Taichi Kato 30 May '23

30 May '23

ASASSN-14mt: most likely superoutburst (ER UMa) Supercycle 40-50 d (ATLAS+ASAS-SN DB). More frequent superoutburst in 2017. YYYYMMDD(UT) mag observer 20230528.6955 16.634o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.7005 16.614o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.7106 16.673o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-alert 27789] ASASSN-15an: bright overlooked (likely) superoutburst in May
by Taichi Kato 30 May '23

30 May '23

ASASSN-15an: bright overlooked (likely) superoutburst in May In the field of RR Pic. Previous long outburst (but fainter) in 2018 Nov.-Dec. + precursor. YYYYMMDD(UT) mag observer 20230427.0321 <18.022g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230428.8108 <15.932g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230428.8108 <15.952g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230428.8108 <16.039g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230429.0297 <17.929g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230502.7112 15.295o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.7146 15.314o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.7198 15.325o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.7305 15.310o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.8203 14.941g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230502.8203 14.946g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230503.7953 14.869g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230503.7953 14.873g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230503.7953 14.875g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230503.7953 15.222g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230504.7783 14.844g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230504.7783 15.132g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230505.0544 14.970g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230505.7373 15.264g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230505.7373 <15.135g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230505.7373 <15.139g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230505.7373 <15.141g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230505.7532 15.583o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230506.8011 14.462g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230506.8011 14.464g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230506.8011 14.471g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230506.8011 15.584g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230507.0282 15.903o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230507.0315 15.930o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230507.0413 15.817o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230507.0571 15.807o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230507.0619 16.042g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230507.8108 15.447g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230508.0505 15.690g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230508.7199 15.897g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230508.7199 15.942g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230508.7599 16.115o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230508.7633 16.099o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230508.7696 16.039o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230508.7822 16.022o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230509.0563 15.934g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230510.0256 16.033g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230510.0256 16.040g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230511.7321 16.039c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230511.7422 16.033c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230511.7523 16.119c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230511.7551 16.118c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230511.7614 16.200c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230511.7646 16.118c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230511.7709 16.005c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230511.7828 16.138c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.0190 16.245g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230512.0190 16.247g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230513.0050 16.407o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230513.0084 16.284g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230516.0037 <18.077g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230517.9956 <18.095g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230518.9990 <17.419g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230519.9949 <17.696g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230519.9961 <17.205g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230520.9946 <18.234g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230523.7015 19.459c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230523.9798 <17.983g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230524.9797 <17.872g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230526.9712 <17.517g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230527.9700 <16.951g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-alert 27788] ASASSN-19fx likely superoutburst
by Taichi Kato 30 May '23

30 May '23

ASASSN-19fx likely superoutburst Type from ASAS-SN DB+ATLAS. YYYYMMDD(UT) mag observer 20230523.1627 <18.185g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230524.1613 <17.780g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230525.1570 17.242g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230527.1533 17.466g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230528.1488 <17.523g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230528.7754 17.958o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.7792 17.923o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.7849 17.904o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230528.7948 17.877o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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