J/other/NatAs/5.ivo://CDS.VizieR/J/other/NatAs/5.775doi:10.26093/cds/vizier/dt/fkhhfCDSDelrez L.Ehrenreich D.Alibert Y.Bonfanti A.Borsato L.Fossati L.,Hooton M.J.Hoyer S.Pozuelos F.J.Salmon S.Sulis S.Wilson T.G.,Adibekyan V.Bourrier V.Brandeker A.Charnoz S.Deline A.Guterman P.,Haldemann J.Hara N.Oshagh M.Sousa S.G.Van Grootel V.Alonso R.,Anglada-Escude G.Barczy T.Barrado D.Barros S.C.C.Baumjohann W.,Beck M.Bekkelien A.Benz W.Billot N.Bonfils X.Broeg C.Cabrera J.,Collier Cameron A.Davies M.B.Deleuil M.Delisle J.-B.,Demangeon O.D.S.Demory B.-O.Erikson A.Fortier A.Fridlund M.,Futyan D.Gandolfi D.Garcia Munoz A.Gillon M.Guedel M.Heng K.,Kiss L.Laskar J.Lecavelier des Etangs A.Lendl M.Lovis C.,Maxted P.F.L.Nascimbeni V.Olofsson G.Osborn H.P.Pagano I.Palle E.,Piotto G.Pollacco D.Queloz D.Rauer H.Ragazzoni R.Ribas I.,Santos N.C.Scandariato G.Segransan D.Simon A.E.Smith A.M.S.,Steller M.Szabo G.M.Thomas N.Udry S.Walton N.A.2026-03-04T20:03:20Z2021-09-07T10:21:27ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetsphotometryExoplanets transiting bright nearby stars are key objects for advancing our knowledge of planetary formation and evolution. The wealth of photons from the host star gives detailed access to the atmospheric, interior and orbital properties of the planetary companions. nu^2^ Lupi (HD 136352) is a naked-eye (V=5.78) Sun-like star that was discovered to host three low-mass planets with orbital periods of 11.6, 27.6 and 107.6d via radial-velocity monitoring. The two inner planets (b and c) were recently found to transit2, prompting a photometric follow-up by the brand new Characterising Exoplanets Satellite (CHEOPS). Here, we report that the outer planet d is also transiting, and measure its radius and mass to be 2.56+/-0.09R_{Earth}_ and 8.82+/-0.94M_{Earth}_, respectively. With its bright Sun-like star, long period and mild irradiation (~5.7 times the irradiation of Earth), nu^2^ Lupi d unlocks a completely new region in the parameter space of exoplanets amenable to detailed characterization. We refine the properties of all three planets: planet b probably has a rocky mostly dry composition, while planets c and d seem to have retained small hydrogen-helium envelopes and a possibly large water fraction. This diversity of planetary compositions makes the nu^2^ Lupi system an excellent laboratory for testing formation and evolution models of low-mass planets.2021NatAs...5..775Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/NatAs/5.775CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/NatAs/5.775https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/NatAs/5.775http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/NatAs/5.775https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/NatAs/5.775https://vizier.iucaa.in/viz-bin/votable?-source=J/other/NatAs/5.775http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/NatAs/5.775GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/other/NatAs/5.775/vis1rawCHEOPS visit 1 raw data, planet brecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date (TDB)dtime.epochdoubleFluxRaw normalised fluxphot.flux;arith.ratiodoublee_FluxError on the raw normalised fluxstat.error;phot.fluxdoubleXshiftTarget position offset in x-directionpixobs.paramdoubleYshiftTarget position offset in y-directionpixobs.paramdoubleRollAngleRoll angledeginstr.offsetdoubleContFlux contaminants/Flux targetinstr.backgrounddoubleBckgBackground in the apertureinstr.backgrounddoubleSmearingSmearing in the apertureinstr.paramdoubleDeltaTOffset of the telescope temperaturedegtime.intervaldoubleJ/other/NatAs/5.775/vis1detCHEOPS visit 1 detrended fluxes, planet brecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date (TDB)dtime.epochdoubleFluxDetrended normalised fluxphot.flux;arith.ratiodoublee_FluxError on the detrended normalised fluxstat.error;phot.fluxdoubleJ/other/NatAs/5.775/vis2rawCHEOPS visit 2 raw data, planet crecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date (TDB)dtime.epochdoubleFluxRaw normalised fluxphot.flux;arith.ratiodoublee_FluxError on the raw normalised fluxstat.error;phot.fluxdoubleXshiftTarget position offset in x-directionpixobs.paramdoubleYshiftTarget position offset in y-directionpixobs.paramdoubleRollAngleRoll angledeginstr.offsetdoubleContFlux contaminants/Flux targetinstr.backgrounddoubleBckgBackground in the apertureinstr.backgrounddoubleSmearingSmearing in the apertureinstr.paramdoubleDeltaTOffset of the telescope temperaturedegtime.intervaldoubleJ/other/NatAs/5.775/vis2detCHEOPS visit 2 detrended fluxes, planet crecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date (TDB)dtime.epochdoubleFluxDetrended normalised fluxphot.flux;arith.ratiodoublee_FluxError on the detrended normalised fluxstat.error;phot.fluxdoubleJ/other/NatAs/5.775/vis3rawCHEOPS visit 3 raw data, planet brecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date (TDB)dtime.epochdoubleFluxRaw normalised fluxphot.flux;arith.ratiodoublee_FluxError on the raw normalised fluxstat.error;phot.fluxdoubleXshiftTarget position offset in x-directionpixobs.paramdoubleYshiftTarget position offset in y-directionpixobs.paramdoubleRollAngleRoll angledeginstr.offsetdoubleContFlux contaminants/Flux targetinstr.backgrounddoubleBckgBackground in the apertureinstr.backgrounddoubleSmearingSmearing in the apertureinstr.paramdoubleDeltaTOffset of the telescope temperaturedegtime.intervaldoubleJ/other/NatAs/5.775/vis3detCHEOPS visit 3 detrended fluxes, planet brecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date (TDB)dtime.epochdoubleFluxDetrended normalised fluxphot.flux;arith.ratiodoublee_FluxError on the detrended normalised fluxstat.error;phot.fluxdoubleJ/other/NatAs/5.775/vis4rawCHEOPS visit 4 raw data, planet brecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date (TDB)dtime.epochdoubleFluxRaw normalised fluxphot.flux;arith.ratiodoublee_FluxError on the raw normalised fluxstat.error;phot.fluxdoubleXshiftTarget position offset in x-directionpixobs.paramdoubleYshiftTarget position offset in y-directionpixobs.paramdoubleRollAngleRoll angledeginstr.offsetdoubleContFlux contaminants/Flux targetinstr.backgrounddoubleBckgBackground in the apertureinstr.backgrounddoubleSmearingSmearing in the apertureinstr.paramdoubleDeltaTOffset of the telescope temperaturedegtime.intervaldoubleJ/other/NatAs/5.775/vis4detCHEOPS visit 4 detrended fluxes, planet brecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date (TDB)dtime.epochdoubleFluxDetrended normalised fluxphot.flux;arith.ratiodoublee_FluxError on the detrended normalised fluxstat.error;phot.fluxdoubleJ/other/NatAs/5.775/vis5rawCHEOPS visit 5 raw data, planets c and drecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date (TDB)dtime.epochdoubleFluxRaw normalised fluxphot.flux;arith.ratiodoublee_FluxError on the raw normalised fluxstat.error;phot.fluxdoubleXshiftTarget position offset in x-directionpixobs.paramdoubleYshiftTarget position offset in y-directionpixobs.paramdoubleRollAngleRoll angledeginstr.offsetdoubleContFlux contaminants/Flux targetinstr.backgrounddoubleBckgBackground in the apertureinstr.backgrounddoubleSmearingSmearing in the apertureinstr.paramdoubleDeltaTOffset of the telescope temperaturedegtime.intervaldoubleJ/other/NatAs/5.775/vis5detCHEOPS visit 5 detrended fluxes, planets c and drecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date (TDB)dtime.epochdoubleFluxDetrended normalised fluxphot.flux;arith.ratiodoublee_FluxError on the detrended normalised fluxstat.error;phot.fluxdoubleJ/other/NatAs/5.775/vis6rawCHEOPS visit 6 raw data, planets b and crecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date (TDB)dtime.epochdoubleFluxRaw normalised fluxphot.flux;arith.ratiodoublee_FluxError on the raw normalised fluxstat.error;phot.fluxdoubleXshiftTarget position offset in x-directionpixobs.paramdoubleYshiftTarget position offset in y-directionpixobs.paramdoubleRollAngleRoll angledeginstr.offsetdoubleContFlux contaminants/Flux targetinstr.backgrounddoubleBckgBackground in the apertureinstr.backgrounddoubleSmearingSmearing in the apertureinstr.paramdoubleDeltaTOffset of the telescope temperaturedegtime.intervaldoubleJ/other/NatAs/5.775/vis6detCHEOPS visit 6 detrended fluxes, planets b and crecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date (TDB)dtime.epochdoubleFluxDetrended normalised fluxphot.flux;arith.ratiodoublee_FluxError on the detrended normalised fluxstat.error;phot.fluxdouble