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

[vsnet-alert 27039] GX Cas (UGSU) outburst
by Kirill Sokolovsky 20 Aug '23

20 Aug '23

The UGSU-type dwarf nova GX Cas is in outburst according to NMW survey photometry (135mm f/2.0 lens + unfiltered ST-8300M CCD): 2022-11-13.7397 2459897.2397 13.4 CV AAVSO observer KLO reports visual observation of this outburst: 2022-11-12.9520 2459896.4520 13.6 Vis. ASAS-SN photometry (latest observation is quiescence on 2022-11-12.165): https://asas-sn.osu.edu/sky-patrol/coordinate/7c8f8333-01a3-49aa-ba14-08b07… VSX record for GX Cas https://www.aavso.org/vsx/index.php?view=detail.top&oid=6537 Best wishes, Kirill Sokolovsky, Stanislav Korotkiy, Olga Smolyankina, Anna Prokudina, Sergei Ostapenko

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[vsnet-alert 27575] ASASSN-19ba superoutburst?
by Taichi Kato 30 Mar '23

30 Mar '23

ASASSN-19ba superoutburst? (May be already over) YYYYMMDD(UT) mag observer 20230310.2361 15.182zr (ZTF Alert DC mag (Masci+ 2019)) 20230316.2419 16.180o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230316.2457 16.242o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230316.2515 16.283o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230316.2617 16.180o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-alert 27574] Re: SDSSJ100515.39+191108.0 superoutburst
by Taichi Kato 30 Mar '23

30 Mar '23

Re: SDSSJ100515.39+191108.0 superoutburst 20230326.1163 18.395o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.1503 18.520o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.1535 18.436o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.1786 18.501o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.3452 18.488o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.3502 18.510o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.3540 18.241o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.3645 18.473o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.6222 <149c (Yutaka Maeda) 20230327.3462 13.264o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.3492 13.251o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.3552 13.246o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.3907 13.170o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.6384 125cG (Yutaka Maeda) 20230328.6544 132cG (Yutaka Maeda) 20230328.6544 132cG (Yutaka Maeda) 20230328.9399 13.697c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.9431 13.680c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.9579 13.693c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-alert 27573] MASTER OT J183007.03+764313.3 outburst
by Taichi Kato 30 Mar '23

30 Mar '23

MASTER OT J183007.03+764313.3 outburst Super? YYYYMMDD(UT) mag observer 20230320.5981 15.944o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230320.6134 15.978o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.5633 16.798o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.5656 16.757o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.5683 16.746o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-alert 27572] ASASSN-15ku superhump period
by Taichi Kato 30 Mar '23

30 Mar '23

ASASSN-15ku superhump period Based on observations by Tamas Tordai, the superhump period is 0.06645(2) d still allowing aliases due to a long gap in the observation.

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[vsnet-alert 27571] ASASSN-23bn superhump period
by Taichi Kato 30 Mar '23

30 Mar '23

ASASSN-23bn superhump period Based on observations by Greg Bolt, Peter Starr, Berto Monard and Josch Hambsch, the superhump period is established to be 0.059681(7) d.

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[vsnet-alert 27570] Wils_SDSSJ073208.11+413008.7 indeed superoutburst
by Taichi Kato 30 Mar '23

30 Mar '23

Wils_SDSSJ073208.11+413008.7 indeed superoutburst YYYYMMDD(UT) mag observer 20230324.3284 15.983o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230324.3373 16.011o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.2787 16.603o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.2872 16.663o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.2904 16.652o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.3036 16.682o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230326.5506 <156c (Yutaka Maeda) 20230327.2820 15.989o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.2853 15.908o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.3030 15.732o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.3151 15.814o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230327.5747 <148c (Yutaka Maeda) 20230328.2783 15.836o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.2820 15.912o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.2883 15.873o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.2989 15.937o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230328.5888 155c (Yutaka Maeda)

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[vsnet-alert 27569] Wils_SDSSJ073208.11+413008.7 possible superoutburst
by Taichi Kato 29 Mar '23

29 Mar '23

Wils_SDSSJ073208.11+413008.7 possible superoutburst YYYYMMDD(UT) mag observer 20230326.5506 <156c (Yutaka Maeda) 20230327.5747 <148c (Yutaka Maeda) 20230328.5888 155c (Yutaka Maeda)

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[vsnet-alert 27568] ASASSN-18acd likely superoutburst
by Taichi Kato 29 Mar '23

29 Mar '23

ASASSN-18acd likely superoutburst Type from ZTF data. YYYYMMDD(UT) mag observer 20230313.5258 14.969zr (ZTF Alert DC mag (Masci+ 2019)) 20230313.5283 14.973zr (ZTF Alert DC mag (Masci+ 2019)) 20230313.5308 14.991zr (ZTF Alert DC mag (Masci+ 2019)) 20230313.5333 15.004zr (ZTF Alert DC mag (Masci+ 2019)) 20230317.5208 15.337zr (ZTF Alert DC mag (Masci+ 2019)) 20230317.5234 15.273zr (ZTF Alert DC mag (Masci+ 2019)) 20230317.5259 15.242zr (ZTF Alert DC mag (Masci+ 2019)) 20230317.5284 15.161zr (ZTF Alert DC mag (Masci+ 2019)) 20230317.5310 15.156zr (ZTF Alert DC mag (Masci+ 2019)) 20230318.5202 15.505zr (ZTF Alert DC mag (Masci+ 2019)) 20230318.5227 15.530zr (ZTF Alert DC mag (Masci+ 2019)) 20230318.5253 15.528zr (ZTF Alert DC mag (Masci+ 2019)) 20230318.5278 15.508zr (ZTF Alert DC mag (Masci+ 2019)) 20230318.5304 15.520zr (ZTF Alert DC mag (Masci+ 2019)) 20230327.8535 162:C (Masayuki Moriyama) 20230329.8061 166:C (Masayuki Moriyama)

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[vsnet-alert 27567] V1251 Cyg apparently reached peak
by Taichi Kato 29 Mar '23

29 Mar '23

V1251 Cyg apparently reached peak YYYYMMDD(UT) mag observer 20230327.8551 <159C (Masayuki Moriyama) 20230328.7938 14.29C (Masayuki Moriyama) 20230328.8567 14.04C (Masayuki Moriyama) 20230329.208 12.67C (Gary Poyner) 20230329.7891 12.77V (Masayuki Moriyama) 20230329.7908 13.01C (Masayuki Moriyama)

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vsnet-alert March 2023