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[vsnet-campaign-dn 17492] GOTO065054.49+593624.51 - Regular superhumps with period of 0.0627 d
by tonny.vanmunster＠gmail.com 21 Oct '24

21 Oct '24

Dear colleagues Last night's (2024, Oct 20/21) unfiltered CCD observations of GOTO065054.49+593624.51, obtained at CBA Extremdara Observatory, show the emergence of regular superhumps allowing to precisely determine the superhump period of this system. Based on 175 observations obtained over 6.3 hours, and showing 4 distinct superhumps with an amplitude of 0.21 mag, I have now established the superhump period using ANOVA, GLS, Lomb-Scargle and PDM (Peranso 3.0) to be 0.0627 +/- 0.0004 d. … [View More]

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[vsnet-campaign-dn 17491] GOTO065054.49+593624.51 - Refined Superhump Period and First Rebrightening
by tonny.vanmunster＠gmail.com 21 Oct '24

21 Oct '24

Dear colleagues Following my announcement two days ago regarding the detection of (early) superhumps in the light curve of GOTO065054.49+593624.51, I now present an update based on observations from the AAVSO, and additional data contributed by CBA member David Messier and myself. In the first figure below, the AAVSO light curve of GOTO065054.49+593624.51 on the right with (cyan) polynomial fit illustrates a gradual decline in brightness over the first 13 nights, at a rate of … [View More]

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[vsnet-campaign-dn 17489] GOTO065054.49+593624.51 is now optically confirmed as a new WZ Sge-type darf nova
by tonny.vanmunster＠gmail.com 18 Oct '24

18 Oct '24

Dear colleagues, I have just completed my analysis of unfiltered CCD observations of GOTO065054.49+593624.51, acquired on Oct 17/18, 2024 at the CBA Extremadura Observatory in Spain. The observations were made using a 0.40-m f/5.1 telescope and SX-46 CCD camera under moderately clear skies, though conditions were only favorable for about 2.2 hours. Since the discovery announcement by T. Killestein et al. on Oct 4, 2024 (ATEL #16842), I have been observing this object across multiple nights, … [View More]

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[vsnet-campaign-dn 17488] ASASSN-24fy: new bright outburst from a known WZ Sge star candidate
by Yusuke Tampo 04 Oct '24

04 Oct '24

ASASSN-24fy: new bright outburst from a known WZ Sge star candidate ASAS-SN reported a new CV outburst candidate ASASSN-24fy discovered on 2024-10-1.99 at 11.01 mag. This system was indeed suspected to be a WZ Sge-type CV by Pala et al 2020 based on Gaia data. >Gaia J154008.28-392917.6 https://www.aavso.org/vsx/index.php?view=detail.top&oid=844362 https://ui.adsabs.harvard.edu/abs/2020MNRAS.494.3799P/abstract Time-resolved observations are encouraged to detect superhumps and confirm … [View More]

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[vsnet-campaign-dn 17487] TCP J18173469+1803499: new SU UMa-type dwarf nova
by tonny.vanmunster＠gmail.com 02 Oct '24

02 Oct '24

Dear colleagues I have just finished analysing my unfiltered CCD observations of TCP J18173469+1803499, obtained during 4 consecutive nights between 2024, Sep 28/29 and Oct 01/02 at CBA Extremadura Observatory using a 0.40-m f/5.1 telescope and SX-46 CCD camera under clear skies. This object was detected by the New Milky Way (NMW) survey Camera-2, operating at the Astroverty astrofarm in Russia, on Sep 27th. Superhumps started to emerge in my data set of 2024, Sep 29/30, and are now … [View More]

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[vsnet-campaign-dn 17486] ASASSN-24fq: new SU UMa-type dwarf nova
by tonny.vanmunster＠gmail.com 02 Sep '24

02 Sep '24

Dear colleagues, I have just finished analysing my unfiltered CCD observations of ASASSN-24fq, obtained on 2024, Aug 30/Sep 01 and Sep 01/02 at CBA Extremadura Observatory using a 0.40-m f/5.1 telescope and SX-46 CCD camera under clear skies. The resulting light curve clearly shows the presence of regular superhumps with an amplitude of 0.56 mag, establishing ASASSN-24fq as a new SU UMa-type dwarf nova. A period analysis, using the ANOVA, Lomb-Scargle, Generalized-Lomb-Scargle, PDM … [View More]

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[vsnet-campaign-dn 17485] TCP J19470832-0924198: new SU UMa-type dwarf nova
by tonny.vanmunster＠gmail.com 16 Aug '24

16 Aug '24

Dear colleagues, I have just finished analysing my unfiltered CCD observations of TCP J19470832-0924198, obtained on 2024, Aug 13/14 at CBA Extremadura Observatory using a 0.40-m f/5.1 telescope and SX-46 CCD camera under clear skies. The resulting light curve clearly shows the presence of superhumps with an amplitude of 0.30 mag, establishing TCP J19470832-0924198 as a new SU UMa-type dwarf nova. A period analysis, using the ANOVA, Lomb-Scargle, Generalized-Lomb-Scargle and PDM … [View More]

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[vsnet-campaign-dn 17484] You have selected
by rpvmedtxqm 07 Aug '24

07 Aug '24

f you did not make this request, you can ignore this email

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[vsnet-campaign-dn 17483] ASASSN-24cg (aka Gaia DR3 4378710224740797312): new SU UMa-type dwarf nova
by tonny.vanmunster＠gmail.com 04 Apr '24

04 Apr '24

Dear colleagues, I have just finished analysing my unfiltered CCD observations of ASASSN-24cg (aka Gaia DR3 4378710224740797312 and TCP J16454549-0257144) obtained on 2024, Apr 03/04 at CBA Extremadura Observatory using a 0.40-m f/5.1 telescope and SX-46 CCD camera, under clear skies. The resulting light curve clearly shows the presence of superhumps with an amplitude of 0.34 mag, establishing ASASSN-24cg as a new SU UMa-type dwarf nova. A period analysis, using the ANOVA, Lomb-Scargle,… [View More]

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[vsnet-campaign-dn 17482] TCP J03383192+2712288: new SU UMa-type (or WZ Sge-type) dwarf nova
by tonny.vanmunster＠gmail.com 11 Mar '24

11 Mar '24

Dear colleagues, I have just finished analysing my unfiltered CMOS observations of TCP J03383192+2712288 obtained on 2024, Mar 08/09 at CBA Belgium Observatory using a 0.40-m f/10.0 telescope and QHY-268M CMOS camera, and on 2024, Mar 10/11 at CBA Extremadura Observatory using a 0.40-m f/5.1 telescope and SX-46 CCD camera. In both cases, skies were not entirely clear. The resulting light curve clearly shows the presence of superhumps with an amplitude of 0.24 mag, establishing TCP … [View More]

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