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

[vsnet-alert 27212] GK Per somewhat active?
by Taichi Kato 20 Dec '22

20 Dec '22

GK Per somewhat active? As suggested in 2021, the next outburst is already due. YYYYMMDD(UT) mag observer 20221209.6807 127cG (Yutaka Maeda) 20221210.422 131 (Tsuneo Horie) 20221212.431 132 (Tsuneo Horie) 20221212.794 128CV (Klaus Wenzel) 20221212.8014 127 (Eddy Muyllaert) 20221213.413 132 (Tsuneo Horie) 20221214.040 127 (Gary Poyner) 20221214.408 131 (Tsuneo Horie) 20221215.017 127 (Gary Poyner) 20221215.417 132 (Tsuneo Horie) 20221215.5973 124cG (Yutaka Maeda) 20221216.422 131 (Tsuneo Horie) 20221216.574 129 (Takuichiro Onishi) 20221216.712 129 (Klaus Wenzel) 20221216.7625 129 (Eddy Muyllaert) 20221217.0284 12.80cG (Masao Funada) 20221218.391 132 (Tsuneo Horie) 20221218.426 123 (Takuichiro Onishi) 20221218.7374 126C (Masayuki Moriyama) 20221219.389 128 (Tsuneo Horie)

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[vsnet-alert 27211] EF Eri (polar) still bright
by Taichi Kato 20 Dec '22

20 Dec '22

EF Eri (polar) still bright Large-amplitude variations were suggested from observations by Josch Hambsch. The time resolution was not enough. Observations with higher time resolution are recommended. YYYYMMDD(UT) mag observer 20221123.5642 <162C (Masayuki Moriyama) 20221216.624 148 (Rod Stubbings) 20221216.651 147 (Rod Stubbings) 20221216.658 147 (Rod Stubbings) 20221217.483 146 (Rod Stubbings) 20221218.076 14.26C (Gary Poyner) 20221218.0759 14.20C (Masao Funada) 20221218.878 14.11C (Gary Poyner) 20221218.8778 13.94C (Masao Funada)

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[vsnet-alert 27210] AQ Eri faded rapidly
by Taichi Kato 19 Dec '22

19 Dec '22

AQ Eri faded rapidly (Might be a precursor) YYYYMMDD(UT) mag observer 20221214.1104 16.77C (Masao Funada) 20221215.478 130 (Rod Stubbings) 20221215.4880 132cG (Yutaka Maeda) 20221215.617 134 (Hiroyuki Maehara) 20221215.663 132 (Takuichiro Onishi) 20221216.0757 13.56C (Masao Funada) 20221216.490 136 (Rod Stubbings) 20221216.587 136 (Takuichiro Onishi) 20221216.9340 141 (Eddy Muyllaert) 20221217.0169 14.53C (Masao Funada) 20221217.473 150 (Rod Stubbings) 20221218.478 165 (Rod Stubbings)

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[vsnet-alert 27209] PY Per outbursts
by Taichi Kato 17 Dec '22

17 Dec '22

PY Per outbursts Outbursts are now regularly seen following the deep low state. Relatively faint outbursts. Simply due to limited coverage? YYYYMMDD(UT) mag observer 20221117.8965 <141 (Eddy Muyllaert) 20221119.8056 <172C (Masayuki Moriyama) 20221123.5820 <158c (Yutaka Maeda) 20221124.5919 <154c (Yutaka Maeda) 20221126.5845 149:cG (Yutaka Maeda) 20221128.851 15.85 (Pavol A. Dubovsky) 20221128.892 15.87C (Gary Poyner) 20221202.5818 <160c (Yutaka Maeda) 20221205.6035 <149c (Yutaka Maeda) 20221206.5751 <148c (Yutaka Maeda) 20221206.6690 <132cG (Yutaka Maeda) 20221206.833 <145 (Gary Poyner) 20221207.5776 <154c (Yutaka Maeda) 20221207.6565 <135cG (Yutaka Maeda) 20221207.6820 155C (Masayuki Moriyama) 20221208.5718 <154c (Yutaka Maeda) 20221208.6495 <139cG (Yutaka Maeda) 20221209.5926 <159c (Yutaka Maeda) 20221209.6664 <142cG (Yutaka Maeda) 20221211.5436 <163c (Yutaka Maeda) 20221212.8611 <141 (Eddy Muyllaert) 20221215.5773 147cG (Yutaka Maeda)

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[vsnet-alert 27208] PV Per outburst
by Taichi Kato 17 Dec '22

17 Dec '22

PV Per outburst Known SU UMa star. YYYYMMDD(UT) mag observer 20221208.5723 <155c (Yutaka Maeda) 20221209.2879 20.219zr (ZTF Alert DC mag (Masci+ 2019)) 20221209.5931 <158c (Yutaka Maeda) 20221211.5441 <162c (Yutaka Maeda) 20221215.5778 156c (Yutaka Maeda)

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[vsnet-alert 27207] DDE51 outburst
by Taichi Kato 17 Dec '22

17 Dec '22

DDE51 outburst Known SU UMa star. YYYYMMDD(UT) mag observer 20221207.4881 <156c (Yutaka Maeda) 20221207.5850 <165C (Masayuki Moriyama) 20221208.4827 <157c (Yutaka Maeda) 20221209.5033 <160c (Yutaka Maeda) 20221211.4548 <155c (Yutaka Maeda) 20221215.6128 15.85C (Masayuki Moriyama)

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[vsnet-alert 27206] Re: EF Eri in active state!
by Taichi Kato 17 Dec '22

17 Dec '22

> The polar EF Eri is in an active state. > > ERIEF 221216.624 148 > ERIEF 221216.651 147 > ERIEF 221216.659 147 This is rare and very important. This polar has a brown-dwarf secondary and has a low mass-transfer rate.

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[vsnet-alert 27205] EF Eri in active state!
by Rod Stubbings 16 Dec '22

16 Dec '22

The polar EF Eri is in an active state. ERIEF 221216.624 148 ERIEF 221216.651 147 ERIEF 221216.659 147 -- Rod Stubbings Tetoora Road Observatory Victoria, Australia Telescope: "Infinity" 22" f/3.8 stubbo(a)dcsi.net.au http://rodstubbingsobservatory.wordpress.com/

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[vsnet-alert 27204] NSV 2026 possivble superoutburst
by Taichi Kato 16 Dec '22

16 Dec '22

NSV 2026 possivble superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20221212.124 <17.30C (Gary Poyner) 20221212.517 <130 (Tsuneo Horie) 20221212.919 17.45C (Gary Poyner) 20221213.878 16.08C (Gary Poyner) 20221214.580 <130 (Tsuneo Horie) 20221215.057 13.70C (Gary Poyner) 20221215.174 13.52C (Gary Poyner) 20221215.622 136 (Hiroyuki Maehara)

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[vsnet-alert 27203] AQ Eri likely superoutburst
by Taichi Kato 16 Dec '22

16 Dec '22

AQ Eri likely superoutburst Well-known SU UMa star. YYYYMMDD(UT) mag observer 20221211.4491 <140c (Yutaka Maeda) 20221211.7763 <164C (Masayuki Moriyama) 20221214.1104 16.77C (Masao Funada) 20221215.478 130 (Rod Stubbings) 20221215.617 134 (Hiroyuki Maehara) 20221215.663 132 (Takuichiro Onishi)

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