October 2022 - vsnet-campaign-dn - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-campaign-dn 16430] ASASSN-22ho: new SU UMa-type dwarf nova
by tonny.vanmunster＠gmail.com 28 Nov '22

28 Nov '22

Dear colleagues, I have just finished analysing my unfiltered CCD observations of ASASSN-22ho, obtained on 2022, June 02/03 at CBA Belgium Observatory, using a 0.40-m f/10.0 telescope and QHY-286M CMOS camera under clear skies. Regular superhumps with an amplitude of 0.35 mag are very clearly visible in the resulting light curve, establishing ASASSN-22ho as a new SU UMa-type dwarf nova. A period analysis using the ANOVA, Lomb-Scargle, Generalized-Lomb-Scargle and PDM methods (Peranso 3.0), yields a combined (long) superhump period of 0.0902 +/- 0.0025d. The object was at mag CV = 16.5 on Jun 03rd. I will send my observations to AAVSO, CBA and VSNET for further analysis. Best regards Tonny --- Tonny Vanmunster CBA Belgium Observatory CBA Extremadura Observatory http://www.cbabelgium.com PERANSO : The Light Curve and Period Analysis Software http://www.peranso.com

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[vsnet-campaign-dn 16558] ASASSN-15pj still in outburst
by Taichi Kato 20 Oct '22

20 Oct '22

ASASSN-15pj still in outburst YYYYMMDD(UT) mag observer 20221008.4356 16.663zr (ZTF Alert DC mag (Masci+ 2019)) 20221008.5108 17.296zg (ZTF Alert DC mag (Masci+ 2019)) 20221012.3683 15.764zr (ZTF Alert DC mag (Masci+ 2019)) 20221012.6783 157:c (Yutaka Maeda) 20221012.6783 157:c (Yutaka Maeda) 20221013.6846 <155c (Yutaka Maeda) 20221014.6642 <150c (Yutaka Maeda) 20221015.6768 157:c (Yutaka Maeda) 20221017.3726 16.106zr (ZTF Alert DC mag (Masci+ 2019)) 20221018.6800 162:c (Yutaka Maeda)

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[vsnet-campaign-dn 16557] KIC11390659 fading rapidly
by Taichi Kato 19 Oct '22

19 Oct '22

KIC11390659 fading rapidly YYYYMMDD(UT) mag observer 20221012.1327 16.652zg (ZTF Alert DC mag (Masci+ 2019)) 20221012.500 165C (Mitsutaka Hiraga) 20221012.6669 <162C (Masayuki Moriyama) 20221013.6258 163:C (Masayuki Moriyama) 20221015.487 125 (Hiroyuki Maehara) 20221016.826 13.12C (Gary Poyner) 20221016.8263 13.00C (Masao Funada) 20221017.6023 143C (Masayuki Moriyama) 20221018.567 151 (Hiroyuki Maehara)

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[vsnet-campaign-dn 16556] MN Dra likely superoutburst
by Taichi Kato 19 Oct '22

19 Oct '22

MN Dra likely superoutburst YYYYMMDD(UT) mag observer 20221011.3215 20.278zg (ZTF Alert DC mag (Masci+ 2019)) 20221011.3412 18.740zg (ZTF Alert DC mag (Masci+ 2019)) 20221012.5363 <157c (Yutaka Maeda) 20221012.6207 <170C (Masayuki Moriyama) 20221013.1579 20.072zr (ZTF Alert DC mag (Masci+ 2019)) 20221013.1584 19.046zr (ZTF Alert DC mag (Masci+ 2019)) 20221013.2022 19.701zg (ZTF Alert DC mag (Masci+ 2019)) 20221013.2251 19.256zg (ZTF Alert DC mag (Masci+ 2019)) 20221013.5429 <154c (Yutaka Maeda) 20221014.5208 <154c (Yutaka Maeda) 20221014.6231 <165C (Masayuki Moriyama) 20221015.1359 16.725zg (ZTF Alert DC mag (Masci+ 2019)) 20221015.1388 16.818zg (ZTF Alert DC mag (Masci+ 2019)) 20221015.1786 16.649zr (ZTF Alert DC mag (Masci+ 2019)) 20221015.1828 16.569zr (ZTF Alert DC mag (Masci+ 2019)) 20221015.5354 <153c (Yutaka Maeda) 20221017.6507 159:C (Masayuki Moriyama)

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[vsnet-campaign-dn 16555] CRTSJ035318.1-034847 possible superoutburst
by Taichi Kato 19 Oct '22

19 Oct '22

CRTSJ035318.1-034847 possible superoutburst Type from ZTF data. Supercycle about 90 d. YYYYMMDD(UT) mag observer 20221010.3980 18.602zg (ZTF Alert DC mag (Masci+ 2019)) 20221010.4414 19.389zr (ZTF Alert DC mag (Masci+ 2019)) 20221012.3725 17.943zr (ZTF Alert DC mag (Masci+ 2019)) 20221012.4425 18.293zg (ZTF Alert DC mag (Masci+ 2019)) 20221017.1745 15.26C (Masao Funada)

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[vsnet-campaign-dn 16554] ZTF18abocmat likely superoutburst
by Taichi Kato 19 Oct '22

19 Oct '22

ZTF18abocmat likely superoutburst Type from ZTF data. YYYYMMDD(UT) mag observer 20221013.1943 17.028zg (ZTF Alert DC mag (Masci+ 2019)) 20221015.1292 16.127zg (ZTF Alert DC mag (Masci+ 2019)) 20221015.1668 16.351zr (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-campaign-dn 16553] ZTF18aaqzomm likely superoutburst
by Taichi Kato 19 Oct '22

19 Oct '22

ZTF18aaqzomm likely superoutburst Type from ZTF data. Supercycle about 210 d. YYYYMMDD(UT) mag observer 20221012.1327 18.197zg (ZTF Alert DC mag (Masci+ 2019)) 20221013.1303 17.564zr (ZTF Alert DC mag (Masci+ 2019)) 20221013.1802 17.553zg (ZTF Alert DC mag (Masci+ 2019)) 20221014.1392 17.384zg (ZTF Alert DC mag (Masci+ 2019)) 20221015.1421 17.565zg (ZTF Alert DC mag (Masci+ 2019)) 20221015.1764 17.522zr (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-campaign-dn 16552] Gaia18cqv likely superoutburst
by Taichi Kato 19 Oct '22

19 Oct '22

Gaia18cqv likely superoutburst Type from ZTF data. YYYYMMDD(UT) mag observer 20221013.1371 16.818zr (ZTF Alert DC mag (Masci+ 2019)) 20221013.2242 16.688zg (ZTF Alert DC mag (Masci+ 2019)) 20221015.2204 16.931zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-campaign-dn 16551] SDSS J001153.08-064739.1: positive Pdot
by Taichi Kato 18 Oct '22

18 Oct '22

SDSS J001153.08-064739.1: positive Pdot Tonny Vanmunster, Josch Hambsch and Filipp Romanov have reported observations. The mean superhump period is 0.10446(2) d. Pdot is positive +8(3)*10^(-5), which is rare for an object in the period gap.

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[vsnet-campaign-dn 16550] Gaia19cvn: possible superoutburst
by Taichi Kato 17 Oct '22

17 Oct '22

Gaia19cvn: possible superoutburst Type from ZTF data. Superoutburst expected from supercycle (1 year). YYYYMMDD(UT) mag observer 20221014.2202 17.832zg (ZTF Alert DC mag (Masci+ 2019)) 20221014.3509 17.323zr (ZTF Alert DC mag (Masci+ 2019))

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