J/A+A/568/A81ivo://CDS.VizieR/J/A+A/568/A81doi:10.26093/cds/vizier.35680081CDSLendl M.Triaud A.H.M.J.Anderson D.R.Collier-Cameron A.Delrez L.,Doyle A.P.Gillon M.Hellier C.Jehin E.Maxted P.F.L.,Neveu-VanMalle M.Pepe F.Pollacco D.Queloz D.Segransan D.,Smalley B.Smith A.M.S.Udry S.Van Grootel V.West R.2017-07-10T06:37:28Z2014-08-23T15:31:21ZCDS support team

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

cds-question@unistra.frmultiple-starssolar-system-planetsphotometryradial-velocityWe report the discovery of WASP-117b, the first planet with a period beyond 10 days found by the WASP survey. The planet has a mass of M_p_=0.2755(+/- 0.0089)M_jup_, a radius of R_p_=1.021(-0.065/+0.076)R_jup_ and is in an eccentric (e=0.302(+/-0.023)), P=10.02165(+/-0.00055)d orbit around a main-sequence F9 star. The host star's brightness (V=10.15mag) makes WASP-117 a good target for follow-up observations, and with a periastron planetary equilibrium temperature of T_eq_=1225(-39/+36)K and a low planetary mean density (rho_p_=0.259(-0.048/+0.054)rho_jup_) it is one of the best targets for transmission spectroscopy among planets with periods around 10 days. From a measurement of the Rossiter-McLaughlin effect, we infer a projected angle between the planetary orbit and stellar spin axes of beta=-44(+/-11){deg}, and we further derive an orbital obliquity of psi=69.6(+4.7/-4.1){deg}. Owing to the large orbital separation, tidal forces causing orbital circularization and realignment of the planetary orbit with the stellar plane are weak, having had little impact on the planetary orbit over the system lifetime. WASP-117b joins a small sample of transiting giant planets with well characterized orbits at periods above ~8-days.2014A&A...568A..81Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/568/A81CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/568/A81https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/568/A81http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/568/A81https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/568/A81https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/568/A81http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/568/A81GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/568/A81/ph_ecamEulerCam relative photometry (r'-Gunn filter)FluxNormalized Fluxphot.flux;arith.ratiodoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date (HJD-2450000)dtime.epochdoublee_FluxNormalized Flux errorstat.error;phot.fluxdoublexshiftPixel shift in x-directionpixobs.paramfloatyshiftPixel shift in y-directionpixobs.paramfloatAMAirmassobs.airMassfloatFWHMStellar Full-Width at Half Maximumpixspect.line.widthfloatSkySky level (Flux)instr.skyLevelfloatTexpExposure timestime.duration;obs.exposurefloatJ/A+A/568/A81/ph_trappTRAPPIST relative photometry (I+z' filter)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date (HJD-2450000)dtime.epochdoubleFluxNormalized Fluxphot.flux;arith.ratiodoublee_FluxNormalized Flux errorstat.error;phot.fluxdoublexshiftPixel shift in x-directionpixobs.paramfloatyshiftPixel shift in y-directionpixobs.paramfloatAMAirmassobs.airMassfloatFWHMStellar Full-Width at Half Maximumpixspect.line.widthfloatSkySky level (Flux)instr.skyLevelfloatTexpExposure timestime.duration;obs.exposurefloatJ/A+A/568/A81/rv_harpsHARPS radial velocitiesRVRadial velocitykm/sphys.veloc;pos.heliocentricdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date (BJD-2450000)dtime.epochdoublee_RVRadial velocity error (photon noise)km/sstat.errordoubleFWHMCCF Full Width Half Maximumkm/sspect.line.widthdoubleSpanBisector spankm/sphys.velocdoubleTexpExposure timestime.duration;obs.exposureintJ/A+A/568/A81/rv_coralCORALIE radial velocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date (BJD-2450000)dtime.epochdoubleRVRadial velocitykm/sphys.veloc;pos.heliocentricdoublee_RVRadial velocity error (photon noise)km/sstat.errordoubleFWHMCCF Full Width Half Maximumkm/sspect.line.widthdoubleSpanBisector spankm/sphys.velocdoubleTexpExposure timestime.duration;obs.exposureint