J/A+A/690/L7ivo://CDS.VizieR/J/A+A/690/L7doi:10.26093/cds/vizier.36909007CDSFermiano V.Saito R.K.Ivanov V.D.Caceres C.Almeida L.A.Aires J.,Beamin J.C.Minniti D.Ferreira T.Andrade L.Borges B.W.,de Almeida L.Jablonski F.Schlindwein W.2025-02-18T20:01:48Z2024-10-09T08:57:14ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frmultiple-starsexoplanetsphotometryvisible-astronomyYoung planetary systems represent an opportunity to investigate the early stages of (exo)planetary formation because the gravitational interactions have not yet significantly changed the initial configuration of the system. TOI-4562 b is a highly eccentric temperate Jupiter analogue orbiting a young F7V-type star of <700Myr in age with an orbital period of P_orb_~225 days and an eccentricity of e=0.76, and is one of the largest known exoplanets to have formed in situ. We observed a new transit of TOI-4562 b using the 0.6-m Zeiss telescope at the Pico dos Dias Observatory (OPD/LNA) in Minas Gerais, Brazil, and combine our data with Transiting Exoplanet Survey Satellite (TESS) and archive data, with the aim being to improve the ephemerides of this interesting system. The O-C diagram for the new ephemeris is consistent with the presence of a giant planet in an outer orbit around TOI-4562. TOI-4562 c is a planet with a mass of M=5.77M_Jup_, an orbital period of P_orb_=3990 days, and a semi-major axis of a=5.219AU. We report the discovery of TOI-4562 c, the exoplanet with the longest orbital period discovered to date via the transit timing variation (TTV) method. The TOI-4562 system is in the process of violent evolution with intense dynamical changes - judging by its young age and high eccentricity - and is therefore a prime target for studies of formation and evolution of planetary systems.2024A&A...690L...7Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/690/L7CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/690/L7https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/690/L7http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/690/L7https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/690/L7https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/690/L7http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/690/L7GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/690/L7/lcTOI-4562 light curvesFluxRelative fluxphot.flux;arith.ratiofloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian datedtime.epochdoublee_FluxRelative flux errorstat.error;phot.fluxfloat