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

[vsnet-alert 27046] ZTF J075040.83+662347.2: very long, strange bright state
by Taichi Kato 15 Nov '22

15 Nov '22

ZTF J075040.83+662347.2: very long, strange bright state Past ZTF data looked like an unusual SU UMa star. May be a polar. YYYYMMDD(UT) mag observer 20220917.4743 17.021zg (ZTF Alert DC mag (Masci+ 2019)) 20220919.4145 17.245zg (ZTF Alert DC mag (Masci+ 2019)) 20220922.4652 16.973zg (ZTF Alert DC mag (Masci+ 2019)) 20220922.4915 17.638zr (ZTF Alert DC mag (Masci+ 2019)) 20220925.4481 17.420zr (ZTF Alert DC mag (Masci+ 2019)) 20220925.4900 17.258zg (ZTF Alert DC mag (Masci+ 2019)) 20220927.4717 17.303zg (ZTF Alert DC mag (Masci+ 2019)) 20220927.4933 17.194zr (ZTF Alert DC mag (Masci+ 2019)) 20221001.3872 17.567zr (ZTF Alert DC mag (Masci+ 2019)) 20221005.4093 17.181zr (ZTF Alert DC mag (Masci+ 2019)) 20221005.4733 17.295zg (ZTF Alert DC mag (Masci+ 2019)) 20221007.4763 17.329zg (ZTF Alert DC mag (Masci+ 2019)) 20221007.4900 17.133zr (ZTF Alert DC mag (Masci+ 2019)) 20221009.4714 17.020zg (ZTF Alert DC mag (Masci+ 2019)) 20221009.4979 17.382zr (ZTF Alert DC mag (Masci+ 2019)) 20221012.3626 17.299zr (ZTF Alert DC mag (Masci+ 2019)) 20221012.4719 17.198zg (ZTF Alert DC mag (Masci+ 2019)) 20221014.4546 17.161zg (ZTF Alert DC mag (Masci+ 2019)) 20221014.4896 17.672zr (ZTF Alert DC mag (Masci+ 2019)) 20221020.3509 17.807zg (ZTF Alert DC mag (Masci+ 2019)) 20221020.4180 17.696zr (ZTF Alert DC mag (Masci+ 2019)) 20221022.4515 17.767zg (ZTF Alert DC mag (Masci+ 2019)) 20221022.4892 17.010zr (ZTF Alert DC mag (Masci+ 2019)) 20221026.3443 17.033zr (ZTF Alert DC mag (Masci+ 2019)) 20221026.4131 17.249zg (ZTF Alert DC mag (Masci+ 2019)) 20221030.4337 17.386zg (ZTF Alert DC mag (Masci+ 2019)) 20221030.4681 17.334zr (ZTF Alert DC mag (Masci+ 2019)) 20221112.3235 17.596zg (ZTF Alert DC mag (Masci+ 2019)) 20221112.3794 17.575zr (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 27045] CRTS J051055.7-102401 possible superoutburst
by Taichi Kato 15 Nov '22

15 Nov '22

CRTS J051055.7-102401 possible superoutburst Possible type from ZTF data. YYYYMMDD(UT) mag observer 20221106.3998 20.582zg (ZTF Alert DC mag (Masci+ 2019)) 20221111.3319 16.929zr (ZTF Alert DC mag (Masci+ 2019)) 20221111.4002 16.880zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 27044] ASASSN-19bl possible superoutburst
by Taichi Kato 15 Nov '22

15 Nov '22

ASASSN-19bl possible superoutburst First known outburst since 2019. Possible precursor in 2019 according to ZTF data. YYYYMMDD(UT) mag observer 20221111.3978 17.288zg (ZTF Alert DC mag (Masci+ 2019)) 20221112.3575 16.341zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 27043] ASASSN-22nj: updated superhump period
by Taichi Kato 14 Nov '22

14 Nov '22

ASASSN-22nj: updated superhump period Kyoto U. team and Itoh-san reported further observations. The updated superhump period is 0.05391(3) d, one of the shortest among hydrogen-rich systems.

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[vsnet-alert 27042] MGAB-V3479 likely superoutburst
by Taichi Kato 14 Nov '22

14 Nov '22

MGAB-V3479 likely superoutburst Type from ZTF data. Supercycle about 350 d. YYYYMMDD(UT) mag observer 20221111.3104 16.660zr (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 27041] CRTS J223233.7+185036 relatively rare outburst
by Taichi Kato 14 Nov '22

14 Nov '22

CRTS J223233.7+185036 relatively rare outburst YYYYMMDD(UT) mag observer 20221111.1643 17.003zr (ZTF Alert DC mag (Masci+ 2019)) 20221111.2250 16.365zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 27040] ATLAS17ftx possible superoutburst
by Taichi Kato 13 Nov '22

13 Nov '22

ATLAS17ftx possible superoutburst Suspected type from ZTF data. Supercycle 450-630 d (SW UMa-like). YYYYMMDD(UT) mag observer 20220825.6984 <169C (Masayuki Moriyama) 20221111.1795 15.580zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-alert 27038] V425 Cas slight fading
by Taichi Kato 12 Nov '22

12 Nov '22

V425 Cas slight fading VY Scl star. Not seen in faint state for long. See also https://ui.adsabs.harvard.edu/abs/2001PASJ...53.1185K/abstract YYYYMMDD(UT) mag observer 20220929.3350 14.392g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20220929.3363 14.425g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20220929.3375 14.444g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20220929.3594 14.558g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20220929.3607 14.527g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20220929.3619 14.528g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20220929.7206 143cG (Yutaka Maeda) 20220930.3116 14.302g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20220930.3129 14.298g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20220930.3142 14.261g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20220930.6535 143:cG (Yutaka Maeda) 20221001.2530 14.414g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221001.2543 14.527g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221001.2556 14.533g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221001.4430 14.393g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221001.4443 14.398g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221001.4455 14.371g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221002.2512 14.353g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221002.2524 14.330g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221002.2537 14.316g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221003.1221 14.457g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221003.1233 14.443g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221003.1246 14.437g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221003.6600 142cG (Yutaka Maeda) 20221004.2290 14.895zr (ZTF Alert DC mag (Masci+ 2019)) 20221006.3834 14.749zg (ZTF Alert DC mag (Masci+ 2019)) 20221008.2477 14.782zg (ZTF Alert DC mag (Masci+ 2019)) 20221008.5767 146:cG (Yutaka Maeda) 20221010.1837 15.010zg (ZTF Alert DC mag (Masci+ 2019)) 20221011.3819 <15.051g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221011.3831 14.771g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221012.1372 14.900zg (ZTF Alert DC mag (Masci+ 2019)) 20221012.5951 147c (Yutaka Maeda) 20221013.0739 14.694g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221013.0752 14.658g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221013.0764 14.919g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221013.6018 149:cG (Yutaka Maeda) 20221014.1862 15.098zr (ZTF Alert DC mag (Masci+ 2019)) 20221014.2211 15.483zg (ZTF Alert DC mag (Masci+ 2019)) 20221014.2751 14.831g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221014.2763 14.129g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221014.2776 15.144g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221015.4136 14.934g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221015.4149 15.083g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221015.4162 15.027g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221015.5941 148:cG (Yutaka Maeda) 20221016.4106 14.946g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221016.4118 14.832g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221016.4131 14.774g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20221017.7253 156C (Masayuki Moriyama) 20221018.5966 151cG (Yutaka Maeda) 20221019.5611 151:cG (Yutaka Maeda) 20221021.2034 15.504zg (ZTF Alert DC mag (Masci+ 2019)) 20221025.2360 15.005zg (ZTF Alert DC mag (Masci+ 2019)) 20221025.3422 15.211zr (ZTF Alert DC mag (Masci+ 2019)) 20221025.5939 152:cG (Yutaka Maeda) 20221027.2891 15.694zr (ZTF Alert DC mag (Masci+ 2019)) 20221027.3089 15.848zg (ZTF Alert DC mag (Masci+ 2019)) 20221027.5885 153c (Yutaka Maeda) 20221028.5991 149:cG (Yutaka Maeda) 20221029.2455 15.224zr (ZTF Alert DC mag (Masci+ 2019)) 20221029.3285 15.586zg (ZTF Alert DC mag (Masci+ 2019)) 20221030.5891 148:cG (Yutaka Maeda) 20221102.6255 <147c (Yutaka Maeda) 20221103.5958 154:c (Yutaka Maeda) 20221104.6281 150:cG (Yutaka Maeda) 20221105.6236 151:c (Yutaka Maeda) 20221107.6267 148:c (Yutaka Maeda) 20221108.5655 149:c (Yutaka Maeda)

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[vsnet-alert 27037] AT 2022zxb = ZTF22abteqxm
by Naoto Kojiguchi 11 Nov '22

11 Nov '22

AT 2022zxb = ZTF22abteqxm Large outburst amplitude of 7.8 mag. Possible WZ Sge-type dwarf nova. TNS: https://www.wis-tns.org/object/2022zxb IDs: 012438.516 +244802.808 GALEX_DR5_6387980255406064374 FUV=22.718(0.403) NUV=23.220(0.474) 012438.628 +244802.788 PS1_137760211609081519 g=21.8467(0.0510) r=21.7548(0.1716) i=21.8614(0.1856) z=20.4797(0.1594) y=-(-) 012438.615 +244802.884 SDSSJ012438.61+244802.8 u=22.326(0.198) g=21.878(0.058) r=21.971(0.088) i=21.901(0.125) z=22.147(0.430) ASAS-SN Sky Patrol: https://asas-sn.osu.edu/sky-patrol/coordinate/06f70233-b2f6-4916-b264-fc732… ZTF Alert: https://alerce.online/object/ZTF22abteqxm https://fink-portal.org/ZTF22abteqxm https://mars.lco.global/?objectId=ZTF22abteqxm https://lasair.roe.ac.uk/object/ZTF22abteqxm ZTF22abteqxm 20221104.088 <16.238g ASN ZTF22abteqxm 20221104.089 <16.117g ASN ZTF22abteqxm 20221104.090 <16.270g ASN ZTF22abteqxm 20221105.104 <16.025g ASN ZTF22abteqxm 20221105.105 <15.947g ASN ZTF22abteqxm 20221105.106 <15.980g ASN ZTF22abteqxm 20221109.340 14.058g ASN ZTF22abteqxm 20221109.342 14.127g ASN ZTF22abteqxm 20221109.343 14.069g ASN ZTF22abteqxm 20221110.061 14.397g ASN ZTF22abteqxm 20221110.062 14.450g ASN ZTF22abteqxm 20221110.064 14.478g ASN ZTF22abteqxm 20221110.404 14.830o ATF ZTF22abteqxm 20221110.407 14.819o ATF ZTF22abteqxm 20221110.414 14.795o ATF ZTF22abteqxm 20221111.265 14.914zr ZAL ZTF22abteqxm 20221111.384 14.717zg ZAL

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[vsnet-alert 27036] SDSS J203501.46-001946.1 outburst
by Taichi Kato 11 Nov '22

11 Nov '22

SDSS J203501.46-001946.1 outburst Relatively bright. Subtype unknown. YYYYMMDD(UT) mag observer 20221012.1457 18.022zg (ZTF Alert DC mag (Masci+ 2019)) 20221014.1459 17.930zg (ZTF Alert DC mag (Masci+ 2019)) 20221014.1772 17.847zr (ZTF Alert DC mag (Masci+ 2019)) 20221017.1304 18.871zg (ZTF Alert DC mag (Masci+ 2019)) 20221019.1659 17.866zr (ZTF Alert DC mag (Masci+ 2019)) 20221021.1631 17.841zr (ZTF Alert DC mag (Masci+ 2019)) 20221031.1510 18.060zg (ZTF Alert DC mag (Masci+ 2019)) 20221106.1099 16.739zg (ZTF Alert DC mag (Masci+ 2019)) 20221106.1939 16.847zr (ZTF Alert DC mag (Masci+ 2019)) 20221108.457 158C (Mitsutaka Hiraga)

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