J/A+AS/143/405ivo://CDS.VizieR/J/A+AS/143/405CDSVeiga C.H.Vieira Martins R.2000-05-20T18:11:16Z2000-05-20T18:11:13ZCDS support team

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

cds-question@unistra.frsolar-system-planetsastrometryAstrometric photographic positions of the Saturnian satellite Helene obtained from 22 plates taken in 6 nights are presented. The observations are distributed between 5 missions in 1985 and 1987. All positions are compared with those calculated by Jacobson (1999, personal communication). The residuals have mean and standard deviation smaller than 0.25" and 0.30" respectively.2000A&AS..143..405Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/143/405CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+AS/121/65 : 1990-1994 Saturn's satellites astrometry (Harper+ 1997)J/A+AS/136/257 : Saturn's satellites in 1995/97 (Harper+ 1999)J/A+AS/139/305 : Position of Saturn's satellites (1982-1988) (Veiga+, 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/143/405https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/143/405http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/143/405https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/143/405https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/143/405http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/143/405GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+AS/143/405/table1Observed positions of HelenerecnoRecord number assigned by the VizieR team. Should Not be used for identification.intObsYear of the mean instant of observationXDifferential topocentric coordinate, {Delta}RAcosDE (1)arcsecdoubleYDifferential topocentric coordinate, {Delta}DE (1)arcsecfloat(O-C)XObserved minus calculated value of Xarcsecfloat(O-C)YObserved minus calculated value of Yarcsecfloat