J/AJ/156/147ivo://CDS.VizieR/J/AJ/156/147doi:10.26093/cds/vizier.51560147CDSBrady M.T.Petigura E.A.Knutson H.A.Sinukoff E.Isaacson H.,Hirsch L.A.Fulton B.J.Kosiarek M.R.Howard A.W.2019-03-27T05:39:36Z2019-03-19T11:35:37ZCDS support team

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

cds-question@unistra.frvariable-starsradial-velocityexoplanetsKepler-1656b is a 5 R_{Earth}_ planet with an orbital period of 32 days initially detected by the prime Kepler mission. We obtained precision radial velocities of Kepler-1656 with Keck/HIRES in order to confirm the planet and to characterize its mass and orbital eccentricity. With a mass of 48+/-4 M_{Earth}_, Kepler-1656b is more massive than most planets of comparable size. Its high mass implies that a significant fraction, roughly 80%, of the planet's total mass is in high-density material such as rock/iron, with the remaining mass in a low-density H/He envelope. The planet also has a high eccentricity of 0.84+/-0.01, the largest measured eccentricity for any planet less than 100 M_{Earth}_. The planet's high density and high eccentricity may be the result of one or more scattering and merger events during or after the dispersal of the protoplanetary disk.2018AJ....156..147Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/156/147CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/other/Sci/330.653 : Detected planets in the Eta-Earth Survey (Howard+, 2010)J/AJ/153/142 : Radial velocities of systems hosting sub-Saturnshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/156/147https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/156/147http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/156/147https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/156/147https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/156/147http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/156/147GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/AJ/156/147/table1Radial velocity and activity measurementsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date in Barycentric Dynamical Time (TDB)dtime.epochdoubleRV[-17.352768/23.427343] Barycentric radial velocitym/sphys.veloc;pos.barycenterdoublee_RV[1.659714/2.78695] Uncertainty in RVm/sstat.errordoubleSHK[0.1235/0.1971] Mount Wilson S_HK_ activity indexspect.indexdouble