J/A+AS/116/473ivo://CDS.VizieR/J/A+AS/116/473CDSSouchay J.Feissel M.Ma C.1997-12-09T18:06:45Z1997-12-09T19:06:40ZCDS support team

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

cds-question@unistra.frvery-long-baseline-interferometryearth-planetUsing geodetic and astrometric VLBI acquired between 1984-1994, we have determined coefficients in the nutation series with uncertainties of 10microarcseconds. This level of accuracy is quite sufficient to differentiate between alternate theories of nutation. We show that small terms predicted using the Kinoshita & Souchay (1990) rigid Earth theory of nutation revised by Souchay & Kinoshita (1996), agree well with the VLBI results at periods where the non rigid Earth corrections are reliable. These terms are different or absent from the Kinoshita (1977) theory that is the basis for the standard IAU 1980 model. We propose a nutation series based on the Kinoshita & Souchay theory using the Wahr (1979) transformation for a non rigid Earth that can be useful where the physical interpretation of the smaller terms is important. This series, called VKSNRE95.1, includes corrections to the nine largest terms derived from VLBI observations.1996A&AS..116..473Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/116/473CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/312/1017: Coefficients of rigid Earth nutation. I. (Souchay+, 1996)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/116/473https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/116/473http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/116/473https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/116/473https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/116/473http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/116/473GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapRadiodefaultJ/A+AS/116/473/table2*VKSNRE95.1, a nutation series for a nonrigid Earth: lunisolar and planetary contributions (unit: 0.001")LvCoefficient of "Lv"stat.fit.paramintLeCoefficient of "Le"pos.eop.nutationintLmCoefficient of "Lm"stat.fit.paramintLjCoefficient of "Lj"stat.fit.paramintLsCoefficient of "Ls"stat.fit.paramintpACoefficient of "pA"stat.fit.paramintphiCoefficient of "phi"pos.eop.nutationintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoSequential numbermeta.id;meta.mainintlCoefficient of "l"stat.fit.paramintl'Coefficient of "l'"stat.fit.paramintFCoefficient of "F"pos.eop.nutationintDCoefficient of "D"pos.eop.nutationintOmegaCoefficient of "Omega"pos.eop.nutationintPeriodPeriod (in years or days, see x_Period)time.perioddoublex_PeriodUnit in which the period is expressed (y for years, d for days)meta.unitcharAiLAmplitude delta(PSI)/sine (Longitude)src.orbitaldoubleAi'L[]? Amplitude delta(PSI)/t*sine (Longitude)pos.eop.nutationfloatBiL[]? Amplitude delta(PSI)/cosine (Longitude)pos.eop.nutationfloatAiO[]? Amplitude delta(EPS)/sine (Obliquity)pos.eop.nutationfloatBiOAmplitude delta(EPS)/cosine (Obliquity)src.orbitaldoubleBi'O[]? Amplitude delta(EPS)/t*cosine (Obliquity)pos.eop.nutationfloatTypeOrigin (1)meta.codecharJ/A+AS/116/473/table3Correction to 42 nutation termsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlCoefficient of "l"stat.fit.paramintl'Coefficient of "l'"stat.fit.paramintFCoefficient of "F"pos.eop.nutationintDCoefficient of "D"pos.eop.nutationintOmegaCoefficient of "Omega"pos.eop.nutationintLvCoefficient of "Lv"stat.fit.paramintLeCoefficient of "Le"pos.eop.nutationintLmCoefficient of "Lm"stat.fit.paramintLjCoefficient of "Lj"stat.fit.paramintLsCoefficient of "Ls"stat.fit.paramintpACoefficient of "pA"stat.fit.paramintPeriodPerioddtime.periodfloatdPSIsIAU amplitude delta(PSI)/sine (1)pos.eop.nutationfloatdPSIc[]? IAU amplitude delta(PSI)/cosine (1)pos.eop.nutationfloatdEPSs[]? IAU amplitude delta(EPS)/sine (1)pos.eop.nutationfloatdEPScIAU amplitude delta(EPS)/cosine (1)pos.eop.nutationfloatTypeType of the terms(2)meta.id;stat.fitchardPSIs2VLBI amplitude delta(PSI)/sine (3)pos.eop.nutationfloatdPSIc2VLBI amplitude delta(PSI)/cosine (3)pos.eop.nutationfloatdEPSs2VLBI amplitude delta(EPS)/sine (3)pos.eop.nutationfloatdEPSc2VLBI amplitude delta(EPS)/cosine (3)pos.eop.nutationfloate_dPSIs2rms uncertainty on dPSIs2 (3)stat.errorfloate_dPSIc2rms uncertainty on dPSIc2 (3)stat.errorfloate_dEPSs2rms uncertainty on dEPSs2 (3)stat.errorfloate_dEPSc2rms uncertainty on dEPSc2 (3)stat.errorfloat