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

[vsnet-alert 27975] CRTS J204618.0-312128 likely superoutburst
by Taichi Kato 15 Dec '23

15 Dec '23

CRTS J204618.0-312128 likely superoutburst Based on past supercycle in ASAS-SN Sky Patrol Photom. DB. YYYYMMDD(UT) mag observer 20231127.0453 <16.522g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20231127.0453 <16.820g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20231128.0308 <17.032g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20231128.0320 <16.458g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20231129.0398 <17.621g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20231129.0398 <17.800g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20231202.4312 <161C (Masayuki Moriyama) 20231213.3959 15.00C (Masayuki Moriyama)

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[vsnet-alert 27974] Re: SwiftJ1727.8-1613: superhumps?
by Taichi Kato 11 Dec '23

11 Dec '23

Re: SwiftJ1727.8-1613: superhumps? (Re: [vsnet-alert 27954] SwiftJ1727.8-1613: superhumps?, Sep. 23) Using the available data since then, the current preferred period is 0.14088(3) d (mean amplitude 0.07 mag, singly peaked). The period of 0.2116(1) d in [vsnet-alert 27954] was 1.5 times of this period.

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[vsnet-alert 27973] TCP J04251906+2841462: ordinary superhumps
by Taichi Kato 06 Dec '23

06 Dec '23

TCP J04251906+2841462: ordinary superhumps According to Itoh-san's observations, this object showed ordinary superhumps since Dec. 3. The current period is 0.05510(4) d. The large amplitude (0.18 mag) seems to preclude a very low-q object.

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[vsnet-alert 27972] TCP J02011347+0139431: new WZ Sge-type dwarf nova
by Taichi Kato 06 Dec '23

06 Dec '23

TCP J02011347+0139431: new WZ Sge-type dwarf nova Itoh-san and Kiyota-san detected early superhumps on two consecutive nights. Typical double-wave modulations with a period of 0.05746(5) d (full amplitude 0.06 mag).

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[vsnet-alert 27971] TCP J18414194+2153095: new SU UMa-type dwarf nova
by Taichi Kato 05 Dec '23

05 Dec '23

TCP J18414194+2153095: new SU UMa-type dwarf nova Itoh-san detected superhumps on two nights (Nov. 28 and Dec. 3). The period has not been determined due to this large gap.

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[vsnet-alert 27970] ASASSN-20pv likely superoutburst (AM CVn)
by Taichi Kato 04 Dec '23

04 Dec '23

ASASSN-20pv likely superoutburst (AM CVn) YYYYMMDD(UT) mag observer 20231203.631 132 (Rod Stubbings)

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vsnet-alert December 2023