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[vsnet-campaign-dn 17468] ATLAS23xus = TCPJ03433597-1153124: ordinary superhumps
by Taichi Kato 04 Jan '24

04 Jan '24

ATLAS23xus = TCPJ03433597-1153124: ordinary superhumps The most recent data (Jan. 2) by Itoh-san recorded probable ordinary superhumps (rather fragmentary data). The long waiting time and the large outburst amplitude suggest a WZ Sge star.

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[vsnet-campaign-dn 17467] 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-campaign-dn 17466] 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-campaign-dn 17465] 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-campaign-dn 17464] TCP J18414194+2153095: new SU UMa-type dwarf nova
by Taichi Kato 06 Dec '23

06 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-campaign-dn 17463] 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-campaign-dn 17462] SDSS J080249.06+363716.4 = ASASSN-23ic: new SU UMa-type dwarf nova
by Taichi Kato 27 Nov '23

27 Nov '23

SDSS J080249.06+363716.4 = ASASSN-23ic: new SU UMa-type dwarf nova Itoh-san reported observations. Although the object is currently faint (17 mag), superhumps and possible shallow eclipses were seen. The period is 0.05919(2) d. This period expresses superhumps well. Due to the limited coverage, possible eclipses fell at the same superhump phase and the orbital and superhump periods were not distinguished.

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[vsnet-campaign-dn 17461] TCP J04251906+2841462: new WZ Sge-type dwarf nova
by Taichi Kato 23 Nov '23

23 Nov '23

TCP J04251906+2841462: new WZ Sge-type dwarf nova Kiyota-san reported observations. Early superhumps with a period of 0.0539(4) d and an amplitude of 0.07 mag were present.

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[vsnet-campaign-dn 17460] TCP J23030178+4916384: new SU UMa-type dwarf nova
by tonny.vanmunster＠gmail.com 17 Nov '23

17 Nov '23

Dear colleagues, I have just finished analysing my unfiltered CCD observations of TCP J23030178+4916384 (aka AT 2023xni) obtained on 2023, Nov 14/15 and Nov 15/16 at CBA Extremadura Observatory using a 0.40-m f/5.1 telescope and SX-46 CCD camera under clear skies. My observations were triggered by this report in TNS: https://www.wis-tns.org/object/2023xni While no clear periodic signal is present in the Nov 14/15 observations, the object clearly started showing superhumps in the light curve of Nov 15/16. The superhumps have an amplitude of 0.21 mag, establishing TCP J23030178+4916384 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 superhump period of 0.0662 +/- 0.0007 d. The object was at mag CV = 17.5 on Nov 16th. Another observing session of this object is currently ongoing at CBA Extremadura Observatory. Image calibration and photometry were done using a beta version of Phoranso. 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.co <http://www.cbabelgium.com/> m PERANSO : The Light Curve and Period Analysis Software http://www.peranso.co <http://www.peranso.com/> m PHORANSO: Photometric Reduction and Analysis Software *** NEW - COMING SOON *** http://www.phoranso.com <http://www.phoranso.com/>

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[vsnet-campaign-dn 17459] TCP J19582065+5506531: new SU UMa-type dwarf nova
by Taichi Kato 16 Nov '23

16 Nov '23

TCP J19582065+5506531: new SU UMa-type dwarf nova The most recent observations by Itoh-san (Nov. 15) showed clear superhumps (period about 0.059 d). They were developing on Nov. 14.

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