J/AN/341/762ivo://CDS.VizieR/J/AN/341/762doi:10.26093/cds/vizier.113410762CDSIzmailov I.Rublevsky A.Apetyan A.2025-09-29T20:18:15Z2020-11-12T16:42:14ZCDS support team

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

cds-question@unistra.frmultiple-starsastrometryWe present 18365 astrometric observations of 290 visual binaries obtained with the 26-inch refractor of Pulkovo Observatory during 2014-2019. The separation between components is from 1.3" to 37" with a median value of 4.8". For a single observation, the mean separation error is 0.013", and the mean position angle error is 0.44{deg}/rho, where rho is an angular distance in arcseconds. We compare the observations of sample stars with the data from the Gaia DR2 catalog and the results of the ground-based observations performed with other telescopes.2020AN....341..762Ihttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AN/341/762CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AN/341/762https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AN/341/762http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AN/341/762https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AN/341/762https://vizier.iucaa.in/viz-bin/votable?-source=J/AN/341/762http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AN/341/762GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/AN/341/762/table1Positional data of separate nightsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWDSWDS identifier (Cat. B/wds)meta.id;meta.maincharCompComponents when more than 2meta.code.multipcharADSADS numbermeta.idcharEpochEpoch of observationyrtime.epochfloatNNumber of CCD framesmeta.numberintThetaPosition Angle based on the equinox for the epoch of observation (1)degpos.posAngdoubleRhoSeparationarcsecpos.angDistancefloate_ThetaStandard deviation in Thetadegstat.error;pos.posAngfloate_RhoStandard deviation in Rhoarcsecstat.errorfloate_Theta2Standard deviation of one CCD image in Thetaarcsecstat.errorfloate_Rho2Standard deviation of one CCD image in Rhoarcsecstat.errorfloatwdsCatDisplay the WDS data (Cat. B/wds)meta.ref.urlcharJ/AN/341/762/table2Yearly average positionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWDSWDS identifier (Cat. B/wds)meta.id;meta.maincharCompComponentsmeta.code.multipcharADSADS numbermeta.idcharEpochEpoch of observationyrtime.epochfloatNNumber of CCD framesmeta.numberintThetaPosition Angle based on the equinox for the epoch of observation (1)degpos.posAngdoubleRhoSeparationarcsecpos.angDistancefloate_ThetaStandard deviation in Thetadegstat.error;pos.posAngfloate_RhoStandard deviation in Rhoarcsecstat.errorfloate_Theta2Standard deviation of one night in Thetaarcsecstat.errorfloate_Rho2Standard deviation of one night in Rhoarcsecstat.errorfloatwdsCatDisplay the WDS data (Cat. B/wds)meta.ref.urlcharJ/AN/341/762/table3The O-C (observed minus calculated) residualsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWDSWDS identifier (Cat. B/wds)meta.id;meta.maincharCompComponentsmeta.code.multipchar(O-C)RhoO-C separation residualarcsecstat.fit.residual;pos.angDistance;stat.fit.omcfloat(O-C)ThetaO-C position angle residual in degdegstat.fit.residual;pos.posAng;stat.fit.omcfloat(O-C)ThetaASO-C position angle residual in arcsecarcsecstat.fit.residual;pos.posAng;stat.fit.omcfloatRefObservation reference, in refs.dat filemeta.ref;obs.param;obscharwdsCatDisplay the WDS data (Cat. B/wds)meta.ref.urlcharJ/AN/341/762/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.notecharBibCodeBibCode (1)meta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notechar