J/AJ/154/200ivo://CDS.VizieR/J/AJ/154/200doi:10.26093/cds/vizier.51540200CDSMason B.D.Hartkopf W.I.Miles K.N.2018-09-27T13:44:00Z2018-08-02T13:39:33ZCDS support team

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

cds-question@unistra.frmultiple-starsorbitsA new relative orbit solution with new dynamical masses is determined for the nearby white dwarf-red dwarf pair 40 Eri BC. The period is 230.29+/-0.68 years. It is predicted to close slowly over the next half-century, getting as close as 1.32" in early 2066. We determine masses of 0.573+/-0.018 M_{sun}_ for the white dwarf and 0.2036+/-0.0064 M_{sun}_ for the red dwarf companion. The inconsistency of the masses determined by gravitational redshift and dynamical techniques, due to a premature orbit calculation, no longer exists.2017AJ....154..200Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/154/200CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2014)J/AJ/123/1023 : Binary star orbits (Seymour+, 2002)J/A+A/486/843 : White dwarf-red dwarf binaries in the SDSS (Augusteijn+, 2008)J/AJ/141/157 : Speckle interferometry at USNO. XVI. (Mason+, 2011)J/AJ/142/46 : Speckle interferometry at USNO. XVII. (Mason+, 2011)J/AJ/153/20 : Speckle interferometry at USNO. XXI. (Mason+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/154/200https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/154/200http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/154/200https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/154/200https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/154/200http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/154/200GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/AJ/154/200/table3Catalog Measurements of 40 Eri BCrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEpoch[1851.06/2016.129] Mean Julian epoch of observation (1)yrtime.epoch;obs;stat.meandoubletheta[0.34/359.6] Position angle {theta} (2)degpos.posAngfloatrho[1.3/9.71] Angular separation {rho}arcsecpos.angDistancefloatn[1/14] Number of nights in the mean positionmeta.numberint(O-C)t[-8.8/6.1] The {theta} (O-C) residualdegstat.fit.residual;stat.fit.omcfloat(O-C)r[-1.787/1.198] The {rho} (O-C) residualarcsecstat.fit.residual;stat.fit.omcfloatWeight[0/52.4] Observation weightstat.weight;phys.atmol.weight;obsfloatRefObservation referencemeta.refcharBibCodeBibCode, when availablemeta.bib.bibcodecharNotesAdditional notes (3)meta.notechar