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

[vsnet-alert 26693] GQ CVn outburst
by Taichi Kato 02 Apr '22

02 Apr '22

GQ CVn outburst Rapidly fading in Gaia data? Last superoutburst was in 2021 Apr.-May. Gaia22bfh AT2021lfd 2022-03-21 20:53:05 190.80018 43.53315 15.13 18.21 1.57 CV 2022-04-01 07:36:45 6 mag outburst in confirmed CV ASASSN-13ao = GQ CVn http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia22bfh/

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[vsnet-alert 26692] Gaia22bfp
by Taichi Kato 02 Apr '22

02 Apr '22

Gaia22bfp Bright transient (15.2) without a counterpart. Likely large-amplitude dwarf nova. http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia22bfp/ Gaia22bfp AT2022fpe 2022-03-22 16:55:55 307.70282 -35.85026 15.16 unknown 2022-04-01 18:33:08 bright blue hostless transient

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[vsnet-alert 26691] ASASSN-22el: UXOR star with very rare fading?
by Taichi Kato 02 Apr '22

02 Apr '22

ASASSN-22el: UXOR star with very rare fading? ASASSN-22el --- ------- 7:37:35.79 -4:31:17.1 2022-04-1.2 13.6 SDSS DSS VIZIER ------- Deep eclipse event, matches to PS1 g=13.3, The full ASAS-SN light curve and the last 100 days. 073735.745 -043117.54 (2000.0) Gaia_EDR3_3057084127033805824 plx=0.251(0.019) dismod=13.0 pmra=-1.772(0.017) pmdec=0.616(0.013) G=12.964 BP=13.255 RP=12.503 2MASS 073735.744 -043117.53 (2000.0) 11.866 11.489 11.384 Short fading in 2017 Sep.

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[vsnet-alert 26688] ASASSN-22ek
by Taichi Kato 01 Apr '22

01 Apr '22

ASASSN-22ek 1+ mag brightening in 2021 Nov. in ZTF data. ASASSN-22ek --- ------- 9:47:8.83 23:31:52.3 2022-03-30.16 15.04 SDSS DSS VIZIER ------- CV candidate, matches to PS1 g=20.0, g>18.2 on 2022-03-27.15, g=16.6 on 2022-03-28.36, g=14.2 on 2022-03-29.31, g=15.3 on 2022-03-30.16 ASASSN-22ek 20220327.15 <182g ASN ASASSN-22ek 20220328.36 166g ASN ASASSN-22ek 20220329.31 142g ASN ASASSN-22ek 20220330.16 153g ASN 094708.835 +233151.80 (2000.0) Gaia_DR2_641464292054953600 plx=3.569(2.170) dismod=7.2 pmra=-17.531(2.166) pmdec=9.429(1.644) G=20.276 BP=19.954 RP=19.942 094708.834 +233151.80 (2000.0) Gaia_EDR3_641464292054953600 plx=1.906(0.843) dismod=8.6 pmra=-19.489(0.745) pmdec=12.183(0.463) G=20.215 BP=20.186 RP=20.221 094708.996 +233149.84 (2000.0) GALEX_DR5_6377671250488068931 NUV=19.737(0.143) FUV=-(-) SDSS: 19.695 19.700 19.576 19.388 19.232

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[vsnet-alert 26689] ZTF J190628.19-083649.7 = Gaia22beu: UGSS star with prominent secondary
by Taichi Kato 01 Apr '22

01 Apr '22

ZTF J190628.19-083649.7 = Gaia22beu: UGSS star with prominent secondary From ZTF data, Porb = 0.2622809(6) d. Double-wave modulations (amplitude 0.6 mag) + orbital hump. Another outburst in 2019 June in ZTF data.

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[vsnet-alert 26687] MM Sco superhumps
by Taichi Kato 31 Mar '22

31 Mar '22

MM Sco superhumps Josch Hambsch has reported observations. The object started showing superhumps on Mar. 30. The amplitudes of superhumps (if present) were still very small on Mar. 29.

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[vsnet-alert 26686] ASASSN-22eb
by Taichi Kato 30 Mar '22

30 Mar '22

ASASSN-22eb Large outburst amplitude. ASASSN-22eb --- ------- 16:11:24.82 -22:45:57.6 2022-03-27.35 13.93 SDSS DSS VIZIER ------- CV candidate, matches to PS1 g=21.0, g>18.5 on 2022-03-26.25, g=14.3 on 2022-03-27.36, g=14.5 on 2022-03-28.18. ASASSN-22eb 20220326.25 <185g ASN ASASSN-22eb 20220327.36 143g ASN ASASSN-22eb 20220328.18 145g ASN

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[vsnet-alert 26685] ASASSN-22ea
by Taichi Kato 30 Mar '22

30 Mar '22

ASASSN-22ea Large outburst amplitude. ASASSN-22ea --- ------- 3:38:28.06 -45:54:23.8 2022-03-26.04 14.28 SDSS DSS VIZIER ------- CV candidate, matches to DES DR2 g=21,4, g>17.5 on 2022-03-23.05, g=14.5 on 2022-03-26.04, g=14.6 on 2022-03-27.03. ASASSN-22ea 20220323.05 <175g ASN ASASSN-22ea 20220326.05 145g ASN ASASSN-22ea 20220327.03 146g ASN

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[vsnet-alert 26684] Re: ASASSN-19yt outburst (since Mar. 16)
by Taichi Kato 30 Mar '22

30 Mar '22

Re: ASASSN-19yt outburst (since Mar. 16) > The current outburst began on 2022 March 16 according to ATLAS > forced photometry data. A rapid fading started on March 26. > The outburst duration is shorter than that of a standard UGSU > superoutburst. The light curve is that of an SS Cyg star and I had classified as such.

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[vsnet-alert 26680] MM Sco likely superoutburst
by Taichi Kato 29 Mar '22

29 Mar '22

MM Sco likely superoutburst YYYYMMDD(UT) mag observer 20220326.594 130 (Rod Stubbings)

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