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

[vsnet-campaign-dn 16564] KLK-42 likely superoutburst
by Taichi Kato 05 Nov '22

05 Nov '22

KLK-42 likely superoutburst WZ Sge or AM CVn. Multiple rebrightenings during the 2019 July-Aug. outburst in ZTF data. YYYYMMDD(UT) mag observer 20221029.1296 19.212zg (ZTF Alert DC mag (Masci+ 2019)) 20221029.1878 18.347zr (ZTF Alert DC mag (Masci+ 2019)) 20221031.1085 17.070zr (ZTF Alert DC mag (Masci+ 2019)) 20221031.1510 16.931zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-campaign-dn 16563] ASASSN-19wz possible superoutburst
by Taichi Kato 05 Nov '22

05 Nov '22

ASASSN-19wz possible superoutburst Suspected type from ZTF data. YYYYMMDD(UT) mag observer 20221013.492 <176C (Mitsutaka Hiraga) 20221029.1845 17.732zr (ZTF Alert DC mag (Masci+ 2019)) 20221031.1104 15.214zr (ZTF Alert DC mag (Masci+ 2019)) 20221031.1538 15.254zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-campaign-dn 16562] SDSS J001153.08-064739.1 second rebrightening
by Taichi Kato 05 Nov '22

05 Nov '22

SDSS J001153.08-064739.1 second rebrightening See vsnet-alert 26991, unusual SU UM star in the period gap and has showed multiple rebrightenings as expected. 20221020.6741 16.31C (Masayuki Moriyama) 20221021.2598 16.771zg (ZTF Alert DC mag (Masci+ 2019)) 20221023.5665 14.97C (Masayuki Moriyama) (first) 20221024.6649 15.31C (Masayuki Moriyama) 20221025.6981 16.22C (Masayuki Moriyama) 20221027.7208 165:C (Masayuki Moriyama) 20221028.1280 16.968V (Filipp Romanov) 20221028.1288 17.109V (Filipp Romanov) 20221028.1296 16.652V (Filipp Romanov) 20221028.1304 17.077V (Filipp Romanov) 20221028.1312 16.813V (Filipp Romanov) 20221028.1320 16.772V (Filipp Romanov) 20221028.1328 17.026V (Filipp Romanov) 20221028.1335 16.673V (Filipp Romanov) 20221028.1402 16.829V (Filipp Romanov) 20221028.1410 16.729V (Filipp Romanov) 20221028.1418 17.317V (Filipp Romanov) 20221028.1426 16.946V (Filipp Romanov) 20221028.1434 17.169V (Filipp Romanov) 20221028.1441 16.963V (Filipp Romanov) 20221028.1449 16.831V (Filipp Romanov) 20221028.1457 16.655V (Filipp Romanov) 20221028.1465 17.125V (Filipp Romanov) 20221028.1473 17.267V (Filipp Romanov) 20221028.1481 16.743V (Filipp Romanov) 20221028.1533 17.288V (Filipp Romanov) 20221028.1596 16.947V (Filipp Romanov) 20221028.1604 16.582V (Filipp Romanov) 20221028.1612 16.876V (Filipp Romanov) 20221028.1620 16.606V (Filipp Romanov) 20221028.1628 16.660V (Filipp Romanov) 20221028.5600 170:C (Masayuki Moriyama) 20221029.6542 167:C (Masayuki Moriyama) 20221030.2286 17.108zg (ZTF Alert DC mag (Masci+ 2019)) 20221030.6376 16.92C (Masayuki Moriyama) 20221101.6840 166:C (Masayuki Moriyama) 20221102.6765 14.92C (Masayuki Moriyama) (second) 20221103.5717 15.55C (Masayuki Moriyama)

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[vsnet-campaign-dn 16561] CC Cnc superoutburst
by Taichi Kato 05 Nov '22

05 Nov '22

CC Cnc superoutburst YYYYMMDD(UT) mag observer 20221020.8072 <155c (Yutaka Maeda) 20221022.1350 <177C (Masao Funada) 20221023.7906 <159c (Yutaka Maeda) 20221024.7781 <162c (Yutaka Maeda) 20221025.8592 <158c (Yutaka Maeda) 20221026.792 <134 (Tsuneo Horie) 20221027.4734 14.316zg (ZTF Alert DC mag (Masci+ 2019)) 20221027.8516 133cG (Yutaka Maeda) 20221028.2497 13.58C (Masao Funada) 20221028.769 143C (Mitsutaka Hiraga) 20221028.774 <134 (Tsuneo Horie) 20221030.8637 133cG (Yutaka Maeda) 20221101.803 136 (Tsuneo Horie) 20221102.8122 134cG (Yutaka Maeda) 20221102.8122 134cG (Yutaka Maeda) 20221103.7806 135cG (Yutaka Maeda) 20221103.7806 135cG (Yutaka Maeda) 20221103.783 137 (Tsuneo Horie)

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[vsnet-campaign-dn 16560] TCP J06382808-0844347: new SU UMa-type dwarf nova
by Taichi Kato 05 Nov '22

05 Nov '22

TCP J06382808-0844347: new SU UMa-type dwarf nova Itoh-san (and some from Josch Hambsch) reported observations. This object is an SU UMa star with a superhump period of 0.05457(2) d (mean amplitude 0.07 mag). A small degree of ambiguity about one-day aliases remains.

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[vsnet-campaign-dn 16559] KIC 11390659: new SU UMa-type dwarf nova with unusual characteristics
by Taichi Kato 05 Nov '22

05 Nov '22

KIC 11390659: new SU UMa-type dwarf nova with unusual characteristics This object underwent an outburst on Oct. 15 (vsnet-alert 26986), which faded rapidly (vsnet-alert 26997). During this fading (precursor), Tamas Tordai and Vihorlat Observatory team recorded superhumps. On Oct. 19, Itoh-san also reported large-amplitude superhumps (nearly 1 mag) when the object was in a dip before the full superoutburst. This phenomenon was also reported by Tonny Vanmunster as "PECULIAR STAR", but after that VSNET network was disconnected. Using the available data during the superoutburst plateau, the superhump period was 0.079679(8) d. The mean amplitude was large (0.23 mag). The plateau was short (Oct. 20-27) and the object started fading rapidly again. Following this, there was a rebrightening on Nov. 2-3 (apparently a normal outburst). The short duration of the plateau was unusual for an SU UMa star with this period. Further observations are still wanted. It was a pity that VSNET was down during this event. Please send your observations (if there were) not reaching the VSNET addresses again (time-series CCD data to vsnet-campaign-report(a)ooruri.kusastro.kyoto-u.ac.jp as before), and please send new data as before. The system problem was probably caused by an excessive amount of bounces in a certain provider, and announcement of full operation of VSNET and what should be done by the subscriber's side are expected to be given by D. Nogami, the manager.

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vsnet-campaign-dn November 2022