February 2022 - vsnet-campaign-dn - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-campaign-dn 16280] ASASSN-22ce: superhump period
by Taichi Kato 01 Mar '22

01 Mar '22

ASASSN-22ce: superhump period Itoh-san and Josch Hambsch have reported observations. The superhump period is 0.07134(2) d. Itoh-san's initial observations were apparently obtained during the final phase of stage A.

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[vsnet-campaign-dn 16279] CRTS J044636.9+083033 superoutburst
by Taichi Kato 28 Feb '22

28 Feb '22

CRTS J044636.9+083033 superoutburst YYYYMMDD(UT) mag observer 20220214.5119 <157c (Yutaka Maeda) 20220215.5260 <154c (Yutaka Maeda) 20220223.4904 153:cG (Yutaka Maeda) 20220223.4905 153:cG (Yutaka Maeda) 20220224.4883 151:cG (Yutaka Maeda) 20220225.4887 153c (Yutaka Maeda) 20220226.024 15.40C (Gary Poyner) 20220226.0254 15.29C (Masao Funada) 20220226.4972 154:c (Yutaka Maeda)

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[vsnet-campaign-dn 16278] CC Cnc outburst
by Taichi Kato 28 Feb '22

28 Feb '22

CC Cnc outburst (UGSU) YYYYMMDD(UT) mag observer 20220224.8674 <141 (Eddy Muyllaert) 20220225.467 <134 (Tsuneo Horie) 20220225.6000 <157c (Yutaka Maeda) 20220225.7475 <162C (Masayuki Moriyama) 20220225.8771 <141 (Eddy Muyllaert) 20220225.930 <149 (Gary Poyner) 20220226.2129 14.383zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220226.469 <118 (Tsuneo Horie) 20220226.6152 140:cG (Yutaka Maeda)

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[vsnet-campaign-dn 16276] ASASSN-22ce: new SU UMa-type dwarf nova
by Taichi Kato 24 Feb '22

24 Feb '22

ASASSN-22ce: new SU UMa-type dwarf nova Itoh-san detected superhumps (0.3 mag) on Feb. 23. The period is slightly longer than 0.06 d.

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[vsnet-campaign-dn 16275] SX LMi superhumps
by Taichi Kato 24 Feb '22

24 Feb '22

SX LMi superhumps Itoh-san has detected superhumps for three nights. In my record, the last observations with detectable superhumps was in 2002 by Kyoto U. team. Past observations were not of good quality and Pdot has not yet been determined.

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[vsnet-campaign-dn 16274] CRTS J172515.5+073249 Gaia detection
by Taichi Kato 22 Feb '22

22 Feb '22

CRTS J172515.5+073249 Gaia detection http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia22arr/ Gaia22arr AT2022cut 2022-02-18 18:04:41 261.31483 7.54699 16.29 20.86 0.11 unknown 2022-02-20 09:58:04 candidate CV CSS100706:172516+073249 in 4.5 mag blue outburst

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[vsnet-campaign-dn 16273] Gaia22asc
by Taichi Kato 22 Feb '22

22 Feb '22

Gaia22asc Rather strange light curve. Blue. http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia22asc/ Gaia22asc AT2021ahpl 2022-02-19 23:04:31 228.99142 -19.29221 17.52 19.95 0.39 unknown 2022-02-21 08:31:14 Gaia and GALEX source brightens by 2.5 mag

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[vsnet-campaign-dn 16272] CRTS J050716.2+125314 likely superoutburst
by Taichi Kato 22 Feb '22

22 Feb '22

CRTS J050716.2+125314 likely superoutburst YYYYMMDD(UT) mag observer 20220221.1492 16.804zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-campaign-dn 16269] ASASSN-20pv rebightening again
by Taichi Kato 21 Feb '22

21 Feb '22

ASASSN-20pv rebightening again (AM CVn) YYYYMMDD(UT) mag observer 20220211.569 144 (Rod Stubbings) 20220212.550 154 (Rod Stubbings) 20220215.156 14.18C (Gary Poyner) 20220215.1570 14.09C (Masao Funada) 20220219.462 154 (Rod Stubbings)

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[vsnet-campaign-dn 16270] SX LMi full superoutburst
by Taichi Kato 21 Feb '22

21 Feb '22

SX LMi full superoutburst YYYYMMDD(UT) mag observer 20220208.6240 <153c (Yutaka Maeda) 20220210.6356 <157c (Yutaka Maeda) 20220210.9417 <142 (Eddy Muyllaert) 20220212.1599 171C (Masao Funada) 20220213.041 17.11C (Gary Poyner) 20220213.0417 16.88C (Eddy Muyllaert) 20220213.3014 17.268zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220215.6404 146:cG (Yutaka Maeda) 20220215.6405 146:cG (Yutaka Maeda) 20220218.2036 14.218zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220218.4051 14.104zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220219.9646 130 (Eddy Muyllaert)

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vsnet-campaign-dn February 2022