J/A+A/299/621ivo://CDS.VizieR/J/A+A/299/621doi:10.26093/cds/vizier.32990621CDSBENEST D.DUVENT J.L.1997-12-09T16:33:04Z1997-12-09T17:32:58ZCDS support team

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

cds-question@unistra.frorbitsSirius has been discovered as double more than 130 years ago. From the beginning of our century up to now, observational as well as physical and dynamical indications lead to the hypothesis of the existence of a third body in the system. In this paper, we present recent orbital analysis of the binary Sirius A-B which, helped by numerical simulation of triple systems, strengthens the idea for the triplicity of Sirius: a tiny star could revolve in about 6 years around Sirius A. Finally, we discuss the possibility of direct detection for this suspected Sirius C.1995A&A...299..621Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/299/621CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/299/621https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/299/621http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/299/621https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/299/621https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/299/621http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/299/621GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/299/621/table2Mean square Fourier analysisrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPPeriodyrtime.periodfloatAxFourier transforms Ax of O-Cxstat.paramdoubleAyFourier transforms Ay of O-Cystat.paramdoubleAxyMean of Ax, Aystat.paramdoubleJ/A+A/299/621/table3Mean square sine function analysis (all data)PPeriodyrtime.periodfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAxPerturbation amplitude Ax of O-Cxstat.paramdoubleAyPerturbation amplitude Ay of O-Cystat.paramdoubleAxyMean of Ax, Aystat.paramdoubleJ/A+A/299/621/appenObservations of Sirius (1862-1979)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateObservation dateyrtime.epochfloatThetaPosition angledegpos.posAngfloatu_Theta[?)] Uncertainty flag on Thetameta.code.errorcharRhoSeparation anglearcsecpos.angDistancefloatu_Rho[?)] Uncertainty flag on Rhometa.code.errorcharo_ThetaNumber of observationsmeta.numberintNameObserver name (1)obs.observerchar