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

[vsnet-alert 27676] CM Mic superoutburst
by Taichi Kato 26 Apr '23

26 Apr '23

CM Mic superoutburst (ER UMa + Z Cam) YYYYMMDD(UT) mag observer 20230416.3356 15.556g (ASAS-SN Sky Patrol Photom. DB. (Hart+2023; Shappee+2014) 20230416.3432 15.453g (ASAS-SN Sky Patrol Photom. DB. (Hart+2023; Shappee+2014) 20230417.1284 15.003g (ASAS-SN Sky Patrol Photom. DB. (Hart+2023; Shappee+2014) 20230418.2997 14.719g (ASAS-SN Sky Patrol Photom. DB. (Hart+2023; Shappee+2014) 20230419.3006 14.717g (ASAS-SN Sky Patrol Photom. DB. (Hart+2023; Shappee+2014) 20230422.2898 15.016g (ASAS-SN Sky Patrol Photom. DB. (Hart+2023; Shappee+2014) 20230422.3595 14.949g (ASAS-SN Sky Patrol Photom. DB. (Hart+2023; Shappee+2014) 20230422.3671 15.068g (ASAS-SN Sky Patrol Photom. DB. (Hart+2023; Shappee+2014) 20230424.3065 15.100g (ASAS-SN Sky Patrol Photom. DB. (Hart+2023; Shappee+2014) 20230424.3218 15.111g (ASAS-SN Sky Patrol Photom. DB. (Hart+2023; Shappee+2014) 20230424.3582 15.009g (ASAS-SN Sky Patrol Photom. DB. (Hart+2023; Shappee+2014) 20230424.4238 15.010g (ASAS-SN Sky Patrol Photom. DB. (Hart+2023; Shappee+2014)

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[vsnet-alert 27675] CRTS J094327.3-272039 superoutburst
by Taichi Kato 26 Apr '23

26 Apr '23

CRTS J094327.3-272039 superoutburst YYYYMMDD(UT) mag observer 20230408.5526 <163C (Masayuki Moriyama) 20230410.5879 <162C (Masayuki Moriyama) 20230413.5294 <156C (Masayuki Moriyama) 20230416.5510 <157C (Masayuki Moriyama) 20230424.599 129 (Rod Stubbings) 20230425.531 129 (Rod Stubbings)

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[vsnet-alert 27674] ASASSN-19hr superoutburst
by Taichi Kato 25 Apr '23

25 Apr '23

ASASSN-19hr superoutburst Precursor + superoutburst? YYYYMMDD(UT) mag observer 20230416.7384 <154c (Yutaka Maeda) 20230417.7544 <151c (Yutaka Maeda) 20230421.7763 154:c (Yutaka Maeda) 20230421.7763 154:c (Yutaka Maeda) 20230422.7504 <158c (Yutaka Maeda) 20230423.1943 14.10C (Masao Funada)

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[vsnet-alert 27673] ZTF19acclxtn likely superoutburst
by Taichi Kato 25 Apr '23

25 Apr '23

ZTF19acclxtn likely superoutburst Type from ZTF data. YYYYMMDD(UT) mag observer 20230417.4659 17.158zg (ZTF Alert DC mag (Masci+ 2019)) 20230420.4430 17.525zg (ZTF Alert DC mag (Masci+ 2019)) 20230422.4417 17.630zg (ZTF Alert DC mag (Masci+ 2019)) 20230422.4640 17.620zr (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 27672] CRTS J121119.1-083957 superoutburst
by Taichi Kato 23 Apr '23

23 Apr '23

CRTS J121119.1-083957 superoutburst Tonny Vanmunster detected superhumps. Period about 0.087(1) d and amplitude 0.19 mag.

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[vsnet-alert 27671] TCPJ12363806+0213281 ordinary superhumps
by Taichi Kato 23 Apr '23

23 Apr '23

TCPJ12363806+0213281 ordinary superhumps According to the latest observations by Josch Hambsch on Apr. 22, ordinary superhumps have appeared.

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[vsnet-alert 27670] CRTSJ105550.1+095621 long bright outburst
by Taichi Kato 23 Apr '23

23 Apr '23

CRTSJ105550.1+095621 long bright outburst Probably SS Cyg, but might be worth visiting for time-resolved photometry (could be a borderline SS Cyg/SU UMa). YYYYMMDD(UT) mag observer 20230414.1158 17.824c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230414.1190 17.993c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230414.1253 18.302c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230414.1351 18.270c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230415.6262 <152c (Yutaka Maeda) 20230415.8710 17.045o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230415.8744 17.140o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230415.8795 17.066o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230415.8933 17.041o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230416.5474 144cG (Yutaka Maeda) 20230416.5474 144cG (Yutaka Maeda) 20230416.5588 143c (Tadashi Kojima) 20230417.1113 14.225c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230417.1145 14.184c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230417.1218 14.239c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230417.1338 14.252c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230418.8403 14.352o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230418.8408 14.399o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230418.8649 14.294o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230421.5835 141cG (Yutaka Maeda) 20230421.5835 141cG (Yutaka Maeda) 20230422.5617 141cG (Yutaka Maeda)

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[vsnet-alert 27669] V337 Cyg likely superoutburst
by Taichi Kato 23 Apr '23

23 Apr '23

V337 Cyg likely superoutburst YYYYMMDD(UT) mag observer 20230416.7564 <157c (Yutaka Maeda) 20230417.7723 <153c (Yutaka Maeda) 20230421.7955 144cG (Yutaka Maeda) 20230422.7684 150:c (Yutaka Maeda)

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[vsnet-alert 27668] ATLAS23dmk: most likely WZ Sge, still showing superhumps now?
by Taichi Kato 23 Apr '23

23 Apr '23

ATLAS23dmk: most likely WZ Sge, still showing superhumps now? The light curve resembles a WZ Sge star. The spectrum excludes a nova (also with a similar light curve). This object may still be in a late phase of the plateau and may be still showing superhumps (still less than 50 d after the peak). YYYYMMDD(UT) mag observer 20230312.2850 14.896o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.2894 14.886o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.2949 14.902o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.2967 14.934o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.3009 14.962o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.3072 14.959o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.3077 14.973o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230312.3178 14.997o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230313.4554 15.75C (Masayuki Moriyama) 20230314.5085 16.22C (Masayuki Moriyama) 20230314.5103 15.94B (Masayuki Moriyama) 20230314.5134 15.74Rc (Masayuki Moriyama) 20230314.5136 <15.04Ic (Masayuki Moriyama) 20230314.5146 15.97V (Masayuki Moriyama) 20230315.6207 16.48C (Masayuki Moriyama) 20230315.6256 15.72B (Masayuki Moriyama) 20230315.6301 16.19V (Masayuki Moriyama) 20230316.3178 16.310o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230316.3214 16.401o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230316.3313 16.487o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230316.3380 16.469o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230318.4729 16.60C (Masayuki Moriyama) 20230319.5440 167:C (Masayuki Moriyama) 20230326.4765 <169C (Masayuki Moriyama) 20230328.2353 17.616o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.2396 17.624o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.2448 17.504o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.2548 17.539o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.4957 173C (Masayuki Moriyama) 20230401.6107 <160C (Masayuki Moriyama) 20230410.2483 18.187o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230410.2516 18.149o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230410.2688 17.944o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230410.2943 18.071o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230412.2411 18.058c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230412.2472 18.273c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230412.2500 18.127c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230412.2602 18.325c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230414.2400 18.319c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230414.2439 18.245c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230414.2491 18.136c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230414.2594 18.283c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230416.2418 18.320c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230416.2485 18.244c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230416.2534 18.362c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230416.2637 18.332c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230422.2362 18.746c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230422.2394 18.312c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230422.2470 18.424c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230422.2638 18.500c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-alert 27667] Gaia DR3 4630500071128655360 = Gaia23bpl: polar
by Taichi Kato 23 Apr '23

23 Apr '23

Gaia DR3 4630500071128655360 = Gaia23bpl: polar http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23bpl/ Apparently high and low states in Gaia data. Porb=0.0642407(2) d from ATLAS data. Two maxima per period.

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vsnet-alert April 2023