February 2023 - vsnet-alert - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-alert 27420] MASTER OT J051415.56+671120.3 rare outburst
by Taichi Kato 16 Feb '23

16 Feb '23

MASTER OT J051415.56+671120.3 rare outburst Known SU UMa star, but not well observed in the past. YYYYMMDD(UT) mag observer 20230130.5810 <164c (Yutaka Maeda) 20230202.5808 <155c (Yutaka Maeda) 20230204.572 <174C (Mitsutaka Hiraga) 20230205.5890 <155c (Yutaka Maeda) 20230207.567 <175C (Mitsutaka Hiraga) 20230208.5565 <143c (Yutaka Maeda) 20230210.5810 <161c (Yutaka Maeda) 20230214.5718 145c (Yutaka Maeda)

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[vsnet-alert 27419] MASTER OT J034045.31+471632.2 likely superoutburst
by Taichi Kato 16 Feb '23

16 Feb '23

MASTER OT J034045.31+471632.2 likely superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20230202.5421 <161c (Yutaka Maeda) 20230204.5175 <158c (Yutaka Maeda) 20230205.4875 <160c (Yutaka Maeda) 20230207.4999 <156c (Yutaka Maeda) 20230208.5181 <142c (Yutaka Maeda) 20230210.5418 <158c (Yutaka Maeda) 20230214.5328 152c (Yutaka Maeda) 20230214.5328 152c (Yutaka Maeda)

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[vsnet-alert 27418] DM Dra superoutburst
by Taichi Kato 16 Feb '23

16 Feb '23

DM Dra superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20230130.8024 <161c (Yutaka Maeda) 20230204.8014 <155c (Yutaka Maeda) 20230210.8075 <147c (Yutaka Maeda) 20230210.8227 149C (Masayuki Moriyama) 20230211.8282 150C (Masayuki Moriyama) 20230214.7785 148cG (Yutaka Maeda)

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[vsnet-alert 27417] CRTS J174033.4+414756 bright superoutburst continues
by Taichi Kato 16 Feb '23

16 Feb '23

CRTS J174033.4+414756 bright superoutburst continues YYYYMMDD(UT) mag observer 20230128.5155 19.929zr (ZTF Alert DC mag (Masci+ 2019)) 20230130.8567 <159c (Yutaka Maeda) 20230204.8568 123cG (Yutaka Maeda) 20230204.8568 123cG (Yutaka Maeda) 20230207.149 13.15CV (Klaus Wenzel) 20230207.160 131 (Klaus Wenzel) 20230209.137 132CV (Klaus Wenzel) 20230213.201 136CV (Klaus Wenzel) 20230214.8331 134cG (Yutaka Maeda)

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[vsnet-alert 27416] CRTS J164950.4+035835 superoutburst
by Taichi Kato 16 Feb '23

16 Feb '23

CRTS J164950.4+035835 superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20230130.8296 <154c (Yutaka Maeda) 20230204.8293 <150c (Yutaka Maeda) 20230214.8059 137cG (Yutaka Maeda) 20230214.8059 137cG (Yutaka Maeda)

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[vsnet-alert 27415] HT Cam rapidly fading outburst
by Taichi Kato 16 Feb '23

16 Feb '23

HT Cam rapidly fading outburst YYYYMMDD(UT) mag observer 20230209.8917 <137 (Eddy Muyllaert) 20230210.053 <148 (Gary Poyner) 20230210.6339 <160c (Yutaka Maeda) 20230211.7293 169C (Masayuki Moriyama) 20230211.8403 <137 (Jose Ripero) 20230213.8549 132 (Eddy Muyllaert) 20230213.951 131 (Gary Poyner) 20230214.6233 137:c (Yutaka Maeda) 20230214.949 155 (Gary Poyner)

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[vsnet-alert 27414] CRTS J103317.3+072119 superhump period
by Taichi Kato 15 Feb '23

15 Feb '23

CRTS J103317.3+072119 superhump period Josch Hambsch has reported second-night observations. The superhump period is 0.07269(6) d (amplitude 0.23 mag).

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[vsnet-alert 27413] ASASSN-23af: oscillation-type rebrightening
by Taichi Kato 15 Feb '23

15 Feb '23

ASASSN-23af: oscillation-type rebrightening Josch Hambsch has reported further data. It has become apparent that this object is showing oscillation-type rebrightenings (as in WZ Sge).

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[vsnet-alert 27412] AK Cnc superoutburst
by Taichi Kato 15 Feb '23

15 Feb '23

AK Cnc superoutburst Well-known SU UMa star. YYYYMMDD(UT) mag observer 20230210.035 <148 (Gary Poyner) 20230210.6641 <160c (Yutaka Maeda) 20230210.7713 <163C (Masayuki Moriyama) 20230211.7810 <154C (Masayuki Moriyama) 20230213.496 131 (Rod Stubbings) 20230214.487 132 (Rod Stubbings)

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[vsnet-alert 27411] PNV J06245297+0208207 stopped fading
by Taichi Kato 14 Feb '23

14 Feb '23

PNV J06245297+0208207 stopped fading According to observations by Josch Hambsch, rapid fading stopped (currently at 17.0 mag). Let's see what happens next.

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