J/A+AS/118/105ivo://CDS.VizieR/J/A+AS/118/105CDSRyl'kov V.P.Dement'eva A.A.Alksnis A.Straume J.I.1997-12-09T18:11:24Z1997-12-09T19:11:21ZCDS support team

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

cds-question@unistra.frsolar-system-planetsastrometry55 equatorial geocentric coordinates of Pluto from the photographic observations for 1991-1994 are presented in the table. The observations were carried out by Latvian astronomers using the 80/120/240 cm Schmidt telescope at Baldone near Riga. 34 plates were measured and the positions of Pluto were reduced by using the 12-21 reference stars from catalogue of southern stars FOCAT-S, created at Pulkovo. The mean reduction errors vary from 0.23" to 0.34" for both coordinates. The obtained Pluto positions were compared with the ephemeris JPL DE200 (the residuals (O-C) were calculated). The increase of the average annual (O-C) residuals in RA, already noticed in previous works by the Pulkovo authors, is confirmed. From observations, represented in 1994 the (O-C) residuals with respect to DE200 have reached in RA +2.32+/-0.07" and in Dec. -0.74+/-0.07". More detailed information on obtaining the Pluto positions is given in Ryl'kov (1993) and Ryl'kov et.al. (1993).1996A&AS..118..105Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/118/105CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/118/105https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/118/105http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/118/105https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/118/105https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/118/105http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/118/105GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+AS/118/105/table2 (Equatorial geocentric coordinates of Pluto from the observations 1991-1994 with the Baldone Schmidt telescope.)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+AS/118/105/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+AS/118/105/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+AS/118/105/table2?GETtext/xml+votable180.050000true230.9324875-2.423408330.005555555555555556https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+AS/118/105?format=asciidefaultJ/A+AS/118/105/table2Equatorial geocentric coordinates of Pluto from the observations 1991-1994 with the Baldone Schmidt telescope.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoPlate number, photographed with Schmidt telescopeobs.fieldintDateObservation datetime.epochJDJulian daydtime.epochdoubleRAJ2000Right ascension J2000.0pos.eq.ra;meta.mainDEJ2000Declination signpos.eq.dec;meta.mainnullableDRAResiduals (O-C) in RAspos.eq.ra;arith.difffloatDDEResiduals (O-C) in DEarcsecpos.eq.dec;arith.difffloatObsAbbreviations of observer names (1)obs.observerchar