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

[vsnet-newvar 9851] MASTER OT J193922.39+665346.0 likely superoutburst
by Taichi Kato 06 Mar '23

06 Mar '23

MASTER OT J193922.39+665346.0 likely superoutburst (Known SU UMa star. Short supercycle) YYYYMMDD(UT) mag observer 20230225.8624 <162c (Yutaka Maeda) 20230227.8140 <142c (Yutaka Maeda) 20230302.8611 <157c (Yutaka Maeda) 20230304.8500 151:c (Yutaka Maeda)

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[vsnet-newvar 9850] SSSJ090619.2-275831: large-amplitude variation
by Taichi Kato 05 Mar '23

05 Mar '23

SSSJ090619.2-275831: large-amplitude variation Josch Hambsch has reported observations. Large-amplitude (0.2-0.3 mag) variations were recorded, but are not yet securely identified as superhumps. More observations will clarify the nature.

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[vsnet-newvar 9849] MASTER OT J055845.55+391533.4: dip and rebrightening
by Taichi Kato 05 Mar '23

05 Mar '23

MASTER OT J055845.55+391533.4: dip and rebrightening According to observations by Itoh-san, this object faded to 16.8 (dip) on Mar. 2 and brightened again to 15.4 on Mar. 3. Superhumps are not currently apparent.

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[vsnet-newvar 9848] ASASSN-20av superoutburst
by Taichi Kato 05 Mar '23

05 Mar '23

ASASSN-20av superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20230224.508 <180C (Mitsutaka Hiraga) 20230302.528 160C (Mitsutaka Hiraga) 20230303.462 163C (Mitsutaka Hiraga)

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[vsnet-newvar 9847] Gaia23ays
by Taichi Kato 04 Mar '23

04 Mar '23

Gaia23ays http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23ays/ Gaia23ays AT2023cta 2023-03-03 07:01:55 184.30874 -38.00620 16.25 unknown 2023-03-04 09:09:22 apparently hostless blue transient 121714.051 -380019.24 (2000.0) GALEX_DR5_6386115440733588477 NUV=21.304(0.368) FUV=-(-)

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[vsnet-newvar 9846] TCP J03400682+4809123: new SU UMa-type dwarf nova
by Taichi Kato 04 Mar '23

04 Mar '23

TCP J03400682+4809123: new SU UMa-type dwarf nova According to Itoh-san's observations on Mar. 3, this object showed superhumps (period about 0.065 d). Superhumps may have already appeared on Feb. 28.

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[vsnet-newvar 9845] ASASSN-16de superoutburst?
by Taichi Kato 04 Mar '23

04 Mar '23

ASASSN-16de superoutburst? (Known SU UMa star) YYYYMMDD(UT) mag observer 20230214.8655 <149c (Yutaka Maeda) 20230215.8701 <153c (Yutaka Maeda) 20230221.8241 <152c (Yutaka Maeda) 20230225.8272 158:c (Yutaka Maeda) 20230226.7798 <148c (Yutaka Maeda) 20230227.7792 <140c (Yutaka Maeda) 20230302.8260 <151c (Yutaka Maeda) 20230302.8287 167C (Masayuki Moriyama)

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[vsnet-newvar 9844] ASASSN-15le superoutburst?
by Taichi Kato 04 Mar '23

04 Mar '23

ASASSN-15le superoutburst? (Known SU UMa star) YYYYMMDD(UT) mag observer 20230221.8236 <160c (Yutaka Maeda) 20230225.8267 <161c (Yutaka Maeda) 20230226.7793 145:cG (Yutaka Maeda) 20230227.7787 <147c (Yutaka Maeda) 20230302.8255 <154c (Yutaka Maeda) 20230302.8645 149C (Masayuki Moriyama)

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[vsnet-newvar 9843] MASTER OT J055845.55+391533.4: rapid decay of superhumps
by Taichi Kato 04 Mar '23

04 Mar '23

MASTER OT J055845.55+391533.4: rapid decay of superhumps Superhumps in this object rapidly decayed (compared to ordinary SU UMa stars, but similar to AM CVn stars). The object may have already started fading rapidly and further continued observations are requested to know the nature of the (expected) second outburst. Observers: Tonny Vanmunster, Kiyota-san and Kubodera-san.

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[vsnet-newvar 9842] ASASSN-23ax: oscillation-type rebrightenings (WZ Sge)
by Taichi Kato 04 Mar '23

04 Mar '23

ASASSN-23ax: oscillation-type rebrightenings (WZ Sge) Josch Hambsch has reported observations. The object now shows oscillation-type rebrightenings as in WZ Sge.

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