June 2022 - vsnet-alert - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-alert 26810] ASASSN-22hc: new SU UMa-type dwarf nova
by Taichi Kato 07 Jun '22

07 Jun '22

ASASSN-22hc: new SU UMa-type dwarf nova Berto Monard and Josch Hambsch have reported observations. The object started to show superhumps on May 31 and the period is 0.05633(2) d (amplitude 0.22 mag).

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[vsnet-alert 26803] U Sco eruption confirmed
by tonny.vanmunster＠gmail.com 06 Jun '22

06 Jun '22

Dear all, I have pleasure confirming the eruption of U Sco. Using a 40-cm f/5.1 telescope and SX-46 CCD camera at CBA Extremadura Observatory (Spain), I obtained 15 V-band exposures of U Sco, yielding following average magnitude: 2022 Jun 06.886 UT, V = 8.71 Congrats to Masayuki-san with this detection. Best regards Tonny Tonny Vanmunster CBA Belgium Observatory CBA Extremadura Observatory www.cbabelgium.com www.peranso.com -----Original Message----- From: Patrick Schmeer via vsnet-outburst <vsnet-outburst(a)ooruri.kusastro.kyoto-u.ac.jp> Sent: Monday, 6 June 2022 21:41 To: vsnet-alert(a)ooruri.kusastro.kyoto-u.ac.jp; vsnet-outburst(a)ooruri.kusastro.kyoto-u.ac.jp; cvnet-outburst(a)groups.io; baavss-alert(a)groups.io Subject: [vsnet-outburst 28764] U Sco eruption (not yet confirmed): recent ASAS-SN Sky Patrol data U Scorpii (NR) https://www.aavso.org/vsx/index.php?view=detail.top&oid=32820 Recent ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) light curve and data: https://asas-sn.osu.edu/sky-patrol/coordinate/93c6536d-22e4-4a75-8ced-7997e… SCOU 20220605.8889 <17.41g ASN No minor planet brighter than mag. 15 was was within a radius of 1° on 2022 June 6.72 UT. Eruptions [sic] occur every 10 +/-2 years. The previous one was detected on 2010 January 28. Confirmation of the current eruption, spectroscopy and multiband as well as time-resolved photometry are urgently required. Clear skies, Patrick ------- Masayuki Moriyama wrote on Monday, 6 June 2022 at 18:55:54 UTC; U Sco outburst!! SCOU 20220606.56664 <173C Myy.VSOLJ SCOU 20220606.72030 114C Myy.VSOLJ observer: M. Moriyama (Sasebo, Nagasaki, Japan) instruments: 25cmSCT(F10)+ x0.63 Reducer +ST-10XME

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[vsnet-alert 26799] U Sco outburst
by Hiroyuki Maehara 06 Jun '22

06 Jun '22

Moriyama-san has reported that U Sco is in outburst. Follow-up observations are urgently required. SCOU 20220606.56582 <173C Myy.VSOLJ SCOU 20220606.72030 114C Myy.VSOLJ Observer: M.Moriyama(Nagasaki, Japan) Instruments : 25cmSCT + ST-10XME

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[vsnet-alert 26801] U Sco eruption (not yet confirmed): recent ASAS-SN Sky Patrol data
by Patrick Schmeer 06 Jun '22

06 Jun '22

U Scorpii (NR) https://www.aavso.org/vsx/index.php?view=detail.top&oid=32820 Recent ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) light curve and data: https://asas-sn.osu.edu/sky-patrol/coordinate/93c6536d-22e4-4a75-8ced-7997e… SCOU 20220605.8889 <17.41g ASN No minor planet brighter than mag. 15 was was within a radius of 1° on 2022 June 6.72 UT. Eruptions [sic] occur every 10 +/-2 years. The previous one was detected on 2010 January 28. Confirmation of the current eruption, spectroscopy and multiband as well as time-resolved photometry are urgently required. Clear skies, Patrick ------- Masayuki Moriyama wrote on Monday, 6 June 2022 at 18:55:54 UTC; U Sco outburst!! SCOU 20220606.56664 <173C Myy.VSOLJ SCOU 20220606.72030 114C Myy.VSOLJ observer: M. Moriyama (Sasebo, Nagasaki, Japan) instruments: 25cmSCT(F10)+ x0.63 Reducer +ST-10XME

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[vsnet-alert 26798] U Sco outburst!!
by Masayuki Moriyama 06 Jun '22

06 Jun '22

U Sco outburst!! SCOU 20220606.56664 <173C Myy.VSOLJ SCOU 20220606.72030 114C Myy.VSOLJ observer : M.Moriyama(Sasebo,Nagasaki,Japan) instruments : 25cmSCT(F10)+ x0.63 Reducer +ST-10XME

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[vsnet-alert 26795] ASASSN-16eg: outburst or noise?
by Taichi Kato 03 Jun '22

03 Jun '22

ASASSN-16eg: outburst or noise? YYYYMMDD(UT) mag observer 20220521.5911 <163c (Yutaka Maeda) 20220522.6073 <154c (Yutaka Maeda) 20220527.6262 <159c (Yutaka Maeda) 20220601.6274 128c (Yutaka Maeda)

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[vsnet-alert 26794] ASASSN-22ha: new most likely WZ Sge-type dwarf nova
by Taichi Kato 03 Jun '22

03 Jun '22

ASASSN-22ha: new most likely WZ Sge-type dwarf nova According to observations by Itoh-san on June 2, this object showed 0.15-mag superhumps (period around 0.06 d or slightly shorter). Considering the long-waiting time and large amplitude, this object is most likely a WZ Sge-type dwarf nova.

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