J/A+A/320/652ivo://CDS.VizieR/J/A+A/320/652doi:10.26093/cds/vizier.33200652CDSViateau B.Rapaport M.1997-12-09T16:57:09Z1997-12-09T17:56:58ZCDS support team

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

cds-question@unistra.frasteroidsephemeridesThe asteroid observations made with the automatic meridian circle at Bordeaux observatory from 1985 to 1994, and which have recently become available, are presented. The residuals of these observations obtained using the orbital elements published in the ``Ephemerides of Minor Planets for 1996'' are analysed. An anomaly for the asteroid (17) Thetis was found, indicating a current close encounter between this asteroid and (4) Vesta. Such an encounter will allow very interesting determinations of the mass of Vesta to be made in the future. Lastly, our determination of the mass of (11) Parthenope is discussed, which was based on its perturbations on the orbit of Thetis. The result obtained, (2.58+/-0.10)x10^-12^M{sun}, appears significant.1997A&A...320..652Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/320/652CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/320/652https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/320/652http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/320/652https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/320/652https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/320/652http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/320/652GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/320/652/table1List of the asteroids observed with therecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoAsteroid numbermeta.idintNameAsteroid namemeta.id;meta.maincharn_Name[H] H: asteroid in the preliminary Hipparcos listmeta.notecharNobsNumber of observations made from 1985 to 1994meta.numberintJ/A+A/320/652/table7*Orbital elements of Thetis integrated for current and future datesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEpochJulian observation epochdtime.epochdoubleDateObservation date (YY/MM/DD.D)time.epochcharaSemi-major axisAUphys.angSize.smajAxis;src.orbitaldoubleeEllipticitysrc.ellipticitydoubleiInclinationdegsrc.orbital.inclinationdoubleWLongitude of the ascending node (OMEGA)degsrc.orbital.nodedoublewLongitude of perihelion (omega)degsrc.orbital.periastrondoubleMMean anomalydegsrc.orbital.meanAnomalydouble