J/AJ/169/26ivo://CDS.VizieR/J/AJ/169/26doi:10.26093/cds/vizier/be-59-tCDSMurphy J.M.A.Luque R.Batalha N.M.Carleo I.Palle E.Brady M.,Fulton B.Handley L.B.Isaacson H.Lacedelli G.Murgas F.Nowak G.,Orell-Miquel J.Osborne H.L.M.Van Eylen V.Zapatero Osorio M.R.2026-07-02T11:52:00Z2025-11-06T12:46:20ZCDS support team

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

cds-question@unistra.frradial-velocityexoplanetsspectroscopyinfrared-astronomyvisible-astronomyWe present a revised mass measurement for HD 119130 b (aka K2-292 b), a transiting planet (P=17days, Rp={2.63}_{-0.10}^{+0.11}R_{Earth}_) orbiting a chromospherically inactive G dwarf, previously thought to be one of the densest sub-Neptunes known. Our follow-up Doppler observations with HARPS, HARPS-N, and HIRES reveal that HD 119130 b is, in fact, nearly one-third as massive as originally suggested by its initial confirmation paper. Our revised analysis finds Mp=8.8+/-3.2M_{Earth}_ (Mp<15.4M_{Earth}_ at 98% confidence) compared to the previously reported Mp=24.5+/-4.4M_{Earth}_. While the true cause of the original mass measurement's inaccuracy remains uncertain, we present the plausible explanation that the planet's radial velocity (RV) semiamplitude was inflated due to constructive interference with a second, untreated sinusoidal signal in the data (possibly rotational modulation from the star). HD 119130 b illustrates the complexities of interpreting the RV orbits of small transiting planets. While RV mass measurements of such planets may be precise, they are not necessarily guaranteed to be accurate. This system serves as a cautionary tale as observers and theorists alike look to the exoplanet mass-radius diagram for insights into the physics of small-planet formation.2025AJ....169...26Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/169/26CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/337 : Gaia DR1 (Gaia Collaboration, 2016)IV/34 : K2 Ecliptic Plane Input Catalog (EPIC) (Huber+, 2017)I/357 : Gaia DR3 Part 3. Non-single stars (Gaia Collaboration, 2022)III/286 : APOGEE-2 DR17 final allStar catalog (Abdurro'uf+, 2022)VII/233 : 2MASS All-Sky Extended Src Cat. (XSC) (IPAC/UMass, 2003-2006)J/ApJ/787/80 : 139 Kepler planets transit time variations (Hadden+, 2014)J/AJ/148/81 : APASS BVgri photometry of RAVE stars. I. Data (Munari+, 2014)J/ApJS/224/2 : K2 EPIC stellar properties for 138600 targets (Huber+, 2016)J/AJ/154/107 : California-Kepler Surv. (CKS). I. 1305 stars (Petigura+, 2017)J/A+A/623/A114 : Light curve of K2-292 (HD 119130) (Luque+, 2019)J/AJ/159/57 : HST spectr. LCs of Kepler 51b & 51d (Libby-Roberts+, 2020)J/ApJS/254/39 : Exoplanet candidates from TESS first 2yr obs (Guerrero+, 2021)J/AJ/161/47 : Radial velocity & phot. of HD106315 & GJ9827 (Kosiarek+, 2021)J/AJ/162/184 : APOGEE: Properties & RVs of binaries (Kounkel, 2021)J/other/Sci/377.1211 : RV and LC of 8 M dwarf stars with planets (Luque+, 2022)J/AJ/166/62 : New HIRES radial velocity data for V1298 Tau (Blunt+, 2023)J/other/RAA/23.K5026 : APOGEE DR17 standard stars radial velocities (Li, 2023)J/ApJS/274/35 : California Legacy Survey. V. Activity cycles (Isaacson+, 2024)J/AJ/167/282 : TESS/HIRES radial velocity follow up of TOI-1824 (Lange+, 2024)J/A+A/701/A100 : Cluster Members in the APOGEE DR17. I. (Guerco, 2025)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/169/26https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/169/26http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/169/26https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/169/26https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/169/26http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/169/26GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/169/26/table1HD 119130 RVsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[2458284/2460445] Barycentric Julian Date (1)dtime.epochdoubleRVel[-15.55/16.63] Radial velocity (2)m/sspect.dopplerVelocfloate_RVel[1.08/7.13] Uncertainty in RVel (2)m/sstat.error;spect.dopplerVelocfloatInstInstrument identifier (3)meta.id;instrchar