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  <Version>2.4.0</Version>
  <NumericalData>
    <ResourceID>spase://CNES/NumericalData/CDPP-Archive/VEX/Ephemeris/VEX_ORBIT_VSO</ResourceID>
    <ResourceHeader>
      <ResourceName>VENUS EXPRESS orbit data (cruise phase, VSO frame, 1 min resolution)</ResourceName>
      <DOI>https://doi.org/10.24400/802406/b8h9-b5dt</DOI>
      <ReleaseDate>2022-06-06T17:35:00Z</ReleaseDate>
      <Description>This data set contains VENUS EXPRESS position and velocity in VSO frame, 1 min resolution, during the cruise phase.

Each ASCII file represents one day.
The coordinate system used is VSO (Venus Solar Orbit).
Data record are arranged chronologically.
One record each minute containing :
-Time-tag, X.frame (km), Y.frame (km), Z.frame (km), Vx.frame (km/s), Vy.frame (km/s), Vz.frame (km/s)
-Data in the records are separated by commas and blanks.
Caution: For the first line, the velocity is NaN (Not a Number) initialized.</Description>
      <Contact>
        <PersonID>spase://CNES/Person/CDPP-Archive/CDPP.general.contact</PersonID>
        <Role>GeneralContact</Role>
      </Contact>
    </ResourceHeader>
    <AccessInformation>
      <RepositoryID>spase://CNES/Repository/CDPP-Archive/REGARDS-CDPP</RepositoryID>
      <Availability>Online</Availability>
      <AccessURL>
        <Name>REGARDS</Name>
        <URL>https://regards.cnes.fr/user/cdpp/modules/1777?sp=DatasetName;q=DatasetName:VEX_ORBIT_VSO</URL>
        <Description>Access via CNES Data Archive for CDPP</Description>
      </AccessURL>
      <Format>Text.ASCII</Format>
    </AccessInformation>
    <InstrumentID>spase://CNES/Instrument/CDPP-Archive/VEX/ASPERA4/Ephemeris</InstrumentID>
    <MeasurementType>Ephemeris</MeasurementType>
    <TemporalDescription>
      <TimeSpan>
        <StartDate>2006-04-01T00:00:00Z</StartDate>
        <StopDate>2014-12-31T00:00:00Z</StopDate>
      </TimeSpan>
    </TemporalDescription>
    <ObservedRegion>Venus.Magnetosphere</ObservedRegion>
    <Parameter>
      <Name>Position VSO</Name>
      <Description>S/C position defined in the VSO reference frame.</Description>
      <Units>km</Units>
      <UnitsConversion>1e3&gt;m</UnitsConversion>
      <CoordinateSystem>
        <CoordinateRepresentation>Cartesian</CoordinateRepresentation>
        <CoordinateSystemName>VSO</CoordinateSystemName>
      </CoordinateSystem>
      <Support>
        <Qualifier>Vector</Qualifier>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>Velocity VSO</Name>
      <Description>S/C velocity defined in the VSO reference frame.</Description>
      <Units>km/s</Units>
      <UnitsConversion>1e3&gt;m/s</UnitsConversion>
      <CoordinateSystem>
        <CoordinateRepresentation>Cartesian</CoordinateRepresentation>
        <CoordinateSystemName>VSO</CoordinateSystemName>
      </CoordinateSystem>
      <Support>
        <Qualifier>Vector</Qualifier>
        <SupportQuantity>Velocity</SupportQuantity>
      </Support>
    </Parameter>
  </NumericalData>
</Spase>
