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

[vsnet-alert 26520] ASASSN-22an: possible nova
by Taichi Kato 11 Jan '22

11 Jan '22

ASASSN-22an: possible nova ASASSN-22an --- ------- 15:24:49.56 -57:39:52.7 2022-01-8.34 15.28 SDSS DSS VIZIER ------- possible Nova, very high extinction region, matches to GAIA DR2 G=19.6, g>17.6 on 2021-10-05.74, g=14.6 on 2021-10-08.98, g=15.6 on 2022-01-08.34 ASASSN-22an 20211005.74 <176g ASN ASASSN-22an 20211008.98 146g ASN ASASSN-22an 20210108.34 156g ASN

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[vsnet-alert 26516] ASASSN-15rj possible superoutburst
by Taichi Kato 10 Jan '22

10 Jan '22

ASASSN-15rj possible superoutburst Relatively rare outburst. YYYYMMDD(UT) mag observer 20211231.5565 <166c (Yutaka Maeda) 20220102.5479 <138c (Yutaka Maeda) 20220103.5609 <165c (Yutaka Maeda) 20220104.5130 <158c (Yutaka Maeda) 20220106.5626 <165c (Yutaka Maeda) 20220107.5363 155:c (Yutaka Maeda)

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[vsnet-alert 26518] ASASSN-22ak: 13.2m dwarf nova in Indus
by Denis Denisenko 10 Jan '22

10 Jan '22

ASASSN-22ak = MASTER OT J225608.75-683610.6 = AT 2022ep ASAS-SN light curve for the last 20 days (Shappee et al., 2014; Kochanek et al., 2017): https://asas-sn.osu.edu/sky-patrol/coordinate/71ac1722-3b66-4ef1-9ee2-2efe3… Discovered at 15.0g on Jan. 07, peaked at about 13.2g on Jan. 08, faded to 13.6 by Jan. 09. Detection by MASTER in Argentina on 2022 Jan. 09.039 UT: https://www.wis-tns.org/object/2022ep Selected photometry: ASASSN-22ak = MASTER OT J225608.75-683610.6 20220106.0797 <171g ASAS-SN last non-detection 20220107.0505 15.00g ASAS-SN (Shappee et al.; Kochanek et al.) 20220107.0530 14.90g ASAS-SN 20220108.0358 13.16g ASAS-SN 20220108.0384 13.20g ASAS-SN 20220109.0387 13.8CV MASTER-OAFA (Lipunov et al., 2010) 20220109.0432 13.8CV MASTER-OAFA 20220109.0674 13.61g ASAS-SN 20220109.0699 13.62g ASAS-SN AAVSO VSX entry: https://www.aavso.org/vsx/index.php?view=detail.top&oid=2225886 Gaia EDR3: 22 56 08.86 -68 36 10.2 Plx=2.17(0.60) mas, pmRA=-10.77(0.55) mas/yr, pmDE=-10.01(0.82) mas/yr Gmag=20.43(1), BPmag=20.40(8), RPmag=20.24(12), BP-RP=0.16 With the minimum of 20.5V, the outburst amplitude is about 7-7.5 magnitudes. Denis Denisenko

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[vsnet-alert 26517] RX Vol possible superoutburst
by Taichi Kato 09 Jan '22

09 Jan '22

RX Vol possible superoutburst YYYYMMDD(UT) mag observer 20220107.3229 15.09C (Eddy Muyllaert) 20220107.3231 15.17C (Masao Funada) 20220107.521 153 (Rod Stubbings)

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[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 08 Jan '22

08 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 07 Jan '22

07 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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