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

[vsnet-alert 26515] TU Tri superoutburst
by Taichi Kato 09 Jan '22

09 Jan '22

TU Tri superoutburst YYYYMMDD(UT) mag observer 20211231.5329 <165c (Yutaka Maeda) 20220102.6834 <154C (Masayuki Moriyama) 20220102.805 <149 (Gary Poyner) 20220103.5374 <165c (Yutaka Maeda) 20220104.4894 145:cG (Yutaka Maeda) 20220104.4894 145:cG (Yutaka Maeda) 20220104.833 147 (Gary Poyner) 20220105.817 148 (Gary Poyner) 20220106.5390 149cG (Yutaka Maeda) 20220107.5108 <144c (Yutaka Maeda) 20220107.921 151: (Gary Poyner)

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[vsnet-alert 26514] EF Peg superoutburst up to now
by Taichi Kato 09 Jan '22

09 Jan '22

EF Peg superoutburst up to now YYYYMMDD(UT) mag observer 20211227.417 <130 (Tsuneo Horie) 20211228.372 <130 (Tsuneo Horie) 20211230.410 116 (Tsuneo Horie) 20211231.406 112 (Tsuneo Horie) 20211231.4368 113cG (Yutaka Maeda) 20220101.4006 11.40C (Masayuki Moriyama) 20220101.408 112 (Tsuneo Horie) 20220102.407 113 (Tsuneo Horie) 20220102.4192 113C (Masayuki Moriyama) 20220103.405 112 (Tsuneo Horie) 20220103.4440 115cG (Yutaka Maeda) 20220103.4440 115cG (Yutaka Maeda) 20220103.4501 115C (Masayuki Moriyama) 20220103.857 11.81C (Gary Poyner) 20220104.401 112 (Tsuneo Horie) 20220105.399 116 (Tsuneo Horie) 20220105.826 11.73C (Gary Poyner) 20220105.8264 11.70C (Eddy Muyllaert) 20220106.4149 11.66C (Masayuki Moriyama)

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[vsnet-alert 26513] ASASSN-15cl superoutburst
by Taichi Kato 09 Jan '22

09 Jan '22

ASASSN-15cl superoutburst YYYYMMDD(UT) mag observer 20211221.6522 <146c (Yutaka Maeda) 20211222.6448 <153c (Yutaka Maeda) 20211231.5842 <157c (Yutaka Maeda) 20220103.5890 137cG (Yutaka Maeda) 20220106.6914 136cG (Yutaka Maeda) 20220107.6407 136cG (Yutaka Maeda) 20220107.6407 136cG (Yutaka Maeda)

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[vsnet-alert 26512] ASASSN-22ae still bright
by Taichi Kato 09 Jan '22

09 Jan '22

ASASSN-22ae still bright Large outburst amplitude. YYYYMMDD(UT) mag observer 20220107.6663 13.95V (Masayuki Moriyama) 20220107.6693 13.72B (Masayuki Moriyama) ASASSN-22ae --- ------- 4:57:3.77 -26:50:7.2 2022-01-5.15 13.13 SDSS DSS VIZIER ------- CV candidate, matches to PS1 g=16.3, g>18.3 on 2022-01-03.28, g=15.3 on 2022-01-04.04, g=13.4 on 2022-01-05.15. ASASSN-22ae 20220103.28 <183g ASN ASASSN-22ae 20220104.04 153g ASN ASASSN-22ae 20220105.15 134g ASN 045703.804 -265007.10 (2000.0) Gaia_DR2_4880708033817333120 plx=3.344(0.885) dismod=7.4 pmra=4.840(1.326) pmdec=1.360(1.611) G=20.583 BP=19.811 RP=19.787 045703.804 -265007.10 (2000.0) Gaia_EDR3_4880708033817333120 plx=1.884(0.613) dismod=8.6 pmra=3.016(0.587) pmdec=0.502(0.667) G=20.462 BP=20.184 RP=19.837

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[vsnet-alert 26511] EX Hya outburst
by Hiroyuki Maehara 09 Jan '22

09 Jan '22

Visual magnitude estimates by VSOLJ members object YYYYMMDD(UT) mag code HYAEX 20220108.868 100 Mhh.VSOLJ Observer: Hiroyuki Maehara (Okayama, Japan) Instruments: 30cmL

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[vsnet-alert 26510] V592 Her superoutburst! (since Dec. 24 or earlier)
by Patrick Schmeer 08 Jan '22

08 Jan '22

V592 Herculis (UGWZ) https://www.aavso.org/vsx/index.php?view=detail.top&oid=15403 The current superoutburst started on 2021 December 24 or earlier according to recent ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) data: https://asas-sn.osu.edu/sky-patrol/coordinate/b56e5c05-0898-48a8-aa17-217f7… In recent decades superoutbursts of V592 Her occurred every 12 years (previous ones in 1986, 1998 and 2010). Clear skies, Patrick ------- Eddy Muyllaert <muyllaert.eddy(a)telenet.be> wrote on 7 January 2022 at 00:03:55 UTC: HERV592 20220106.2444 15.94C OUTBURST! Open University COAST Regards, Eddy

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[vsnet-alert 26509] GP CVn superoutburst
by Taichi Kato 07 Jan '22

07 Jan '22

GP CVn superoutburst UGSU+E. Last superoutburst in 2021 Feb.-Mar. YYYYMMDD(UT) mag observer 20211213.7983 <153c (Yutaka Maeda) 20211214.7957 <154c (Yutaka Maeda) 20211221.8288 <148c (Yutaka Maeda) 20211222.8169 <156c (Yutaka Maeda) 20211223.8388 <159c (Yutaka Maeda) 20220103.7934 154:c (Yutaka Maeda) 20220106.226 16.04C (Gary Poyner)

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[vsnet-alert 26508] V592 Her rare outburst
by Taichi Kato 07 Jan '22

07 Jan '22

V592 Her rare outburst WZ Sge star. Last superoutburst in 2010. YYYYMMDD(UT) mag observer 20211031.4099 <166C (Masayuki Moriyama) 20211031.7653 <139 (Eddy Muyllaert) 20211101.4343 <164C (Masayuki Moriyama) 20211101.7618 <139 (Eddy Muyllaert) 20211101.7743 <142 (Jose Ripero) 20211102.7646 <139 (Eddy Muyllaert) 20211103.4232 <170C (Masayuki Moriyama) 20211105.7590 <139 (Eddy Muyllaert) 20211107.4103 <160C (Masayuki Moriyama) 20211108.7708 <142 (Jose Ripero) 20211115.4106 <156C (Masayuki Moriyama) 20211118.4076 <156C (Masayuki Moriyama) 20211222.8923 <133c (Yutaka Maeda) 20220103.8978 <138c (Yutaka Maeda) 20220106.2444 15.94C (Eddy Muyllaert)

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[vsnet-alert 26507] MASTER OT J042609.34+354144.8 superhumps
by Taichi Kato 06 Jan '22

06 Jan '22

MASTER OT J042609.34+354144.8 superhumps Kiyota-san detected large-amplitude superhumps on Jan. 4. Superhumps were apparently growing on Jan. 3.

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[vsnet-alert 26501] MASTER OT J030227.28+191754.5: stage A superhumps, eventually
by Taichi Kato 05 Jan '22

05 Jan '22

MASTER OT J030227.28+191754.5: stage A superhumps, eventually The most recent data by Tonny Vanmunster, Tamas Tordai and Itoh-san have recorded emerging ordinary superhumps since 2021 Dec. 30 -- 32 d after the outburst detection! (The longest record, probably related to the large outburst amplitude). The period of stage A superhumps is 0.0616(2) d (2-d baseline). The period of early superhumps is 0.059851(5) d. The corresponding mass ratio is 0.076(10), which will be updated as more observations become available. This value corresponds to a "borderline" period bouncer. List of observers and numbers of measurements: Code Mode Corr SD Obs OKU B -0.401 0.051 1503 KU1 CV -0.427 0.044 19437 Van CV -0.503 0.022 512 KU1 V -0.281 0.038 8153 Ioh C -0.283 0.050 20707 Trt V -0.291 0.030 358 HaC CV -0.242 0.067 262 KU1 Ic 0.012 0.033 109 KU1 Rc -0.051 0.026 119 KU1 B -0.424 0.024 118 Kis C -0.380 0.060 1812 Vih V -0.282 0.032 242 Vih Ic -0.001 0.030 245 Trt CV -0.207 0.031 1440 RFD V -0.173 0.014 175 OKU C 12.103 0.059 1539 GCH CV -0.457 0.018 7

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vsnet-alert January 2022