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      <Note>CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions</Note>
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  <NumericalData>
    <ResourceID>spase://NASA/NumericalData/Vega2/Ephemeris/P1D</ResourceID>
    <NamingAuthority>NASA</NamingAuthority>
    <ResourceType>NumericalData</ResourceType>
    <ResourceHeader>
      <ResourceName>Vega 2 Trajectory Data</ResourceName>
      <ReleaseDate>2025-12-04T13:32:24Z</ReleaseDate>
      <RevisionHistory>
        <RevisionEvent>
          <ReleaseDate>2020-07-07T21:15:50Z</ReleaseDate>
          <Note>Only known prior ReleaseDate of the metadata</Note>
        </RevisionEvent>
        <RevisionEvent>
          <ReleaseDate>2025-12-04T13:32:24Z</ReleaseDate>
          <Note>Added MetadataRightsList and RightsList(s). Added ResourceType and NamingAuthority. Updated to 2.7.1. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. ZCB</Note>
        </RevisionEvent>
      </RevisionHistory>
      <Description>Daily Vega 2 position data in Solar Ecliptic and HGI coordinates.</Description>
      <Acknowledgement>National Space Science Data Center(NSSDC), Space Physics Data Facility(SPDF).</Acknowledgement>
      <Contact>
        <PersonID>spase://SMWG/Person/Valery.G.Petrov</PersonID>
        <Role>GeneralContact</Role>
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      <Contact>
        <PersonID>spase://SMWG/Person/Natalia.E.Papitashvili</PersonID>
        <Role>TechnicalContact</Role>
      </Contact>
      <Contact>
        <PersonID>spase://SMWG/Person/Jan.Merka</PersonID>
        <Role>MetadataContact</Role>
      </Contact>
      <PriorID>spase://VHO/NumericalData/Vega2/Ephemeris/P1D</PriorID>
      <PriorID>spase://VSPO/NumericalData/Vega2/Ephemeris/P1D</PriorID>
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      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
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          <RightsName>Creative Commons Zero v1.0 Universal</RightsName>
          <Note>CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products</Note>
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      <AccessURL>
        <Name>FTPS from SPDF (not with most browsers)</Name>
        <URL>ftps://spdf.gsfc.nasa.gov/pub/data/zzz_old/vega_data_from_nssdc/mag/</URL>
        <Description>FTP access to Vega mission data at NSSDC.</Description>
      </AccessURL>
      <AccessURL>
        <Name>HTTPS from SPDF</Name>
        <URL>https://spdf.gsfc.nasa.gov/pub/data/zzz_old/vega_data_from_nssdc/mag/</URL>
        <Description>In CDF via HTTP from SPDF</Description>
      </AccessURL>
      <Format>Text.ASCII</Format>
      <Encoding>ASCII</Encoding>
    </AccessInformation>
    <InstrumentID>spase://SMWG/Instrument/Vega2/Ephemeris</InstrumentID>
    <MeasurementType>Ephemeris</MeasurementType>
    <TemporalDescription>
      <TimeSpan>
        <StartDate>1984-12-26T21:00:00Z</StartDate>
        <StopDate>1986-07-16T21:00:00Z</StopDate>
      </TimeSpan>
      <Cadence>P1D</Cadence>
    </TemporalDescription>
    <ObservedRegion>Heliosphere.Inner</ObservedRegion>
    <ObservedRegion>Venus</ObservedRegion>
    <ObservedRegion>Comet</ObservedRegion>
    <Parameter>
      <Name>Time</Name>
      <ParameterKey>Column 1</ParameterKey>
      <Description>Time (UT)</Description>
      <Support>
        <SupportQuantity>Temporal</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>Xse</Name>
      <ParameterKey>Column 2</ParameterKey>
      <Description>X component of spacecraft position in SE coordinates</Description>
      <Units>km</Units>
      <UnitsConversion>1e3&gt;m</UnitsConversion>
      <CoordinateSystem>
        <CoordinateRepresentation>Cartesian</CoordinateRepresentation>
        <CoordinateSystemName>SE</CoordinateSystemName>
      </CoordinateSystem>
      <Support>
        <Qualifier>Component.I</Qualifier>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>Yse</Name>
      <ParameterKey>Column 3</ParameterKey>
      <Description>Y component of spacecraft position in SE coordinates</Description>
      <Units>km</Units>
      <UnitsConversion>1e3&gt;m</UnitsConversion>
      <CoordinateSystem>
        <CoordinateRepresentation>Cartesian</CoordinateRepresentation>
        <CoordinateSystemName>SE</CoordinateSystemName>
      </CoordinateSystem>
      <Support>
        <Qualifier>Component.J</Qualifier>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>Zse</Name>
      <ParameterKey>Column 4</ParameterKey>
      <Description>Z component of spacecraft position in SE coordinates</Description>
      <Units>km</Units>
      <UnitsConversion>1e3&gt;m</UnitsConversion>
      <CoordinateSystem>
        <CoordinateRepresentation>Cartesian</CoordinateRepresentation>
        <CoordinateSystemName>SE</CoordinateSystemName>
      </CoordinateSystem>
      <Support>
        <Qualifier>Component.K</Qualifier>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>R</Name>
      <ParameterKey>Column 5</ParameterKey>
      <Description>Spacecraft radial distance from Sun in AU.</Description>
      <Units>AU</Units>
      <CoordinateSystem>
        <CoordinateRepresentation>Spherical</CoordinateRepresentation>
        <CoordinateSystemName>HGI</CoordinateSystemName>
      </CoordinateSystem>
      <Support>
        <Qualifier>Magnitude</Qualifier>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>Azimuth</Name>
      <ParameterKey>Column 6</ParameterKey>
      <Description>HGI spacecraft position azimuth, degrees.</Description>
      <Units>deg</Units>
      <CoordinateSystem>
        <CoordinateRepresentation>Spherical</CoordinateRepresentation>
        <CoordinateSystemName>HGI</CoordinateSystemName>
      </CoordinateSystem>
      <Support>
        <Qualifier>DirectionAngle.AzimuthAngle</Qualifier>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>Elevation</Name>
      <ParameterKey>Column 7</ParameterKey>
      <Description>HGI Spacecraft position elevation, degrees.</Description>
      <Units>deg</Units>
      <CoordinateSystem>
        <CoordinateRepresentation>Spherical</CoordinateRepresentation>
        <CoordinateSystemName>HGI</CoordinateSystemName>
      </CoordinateSystem>
      <Support>
        <Qualifier>DirectionAngle.ElevationAngle</Qualifier>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
  </NumericalData>
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