<?xml version="1.0" encoding="UTF-8"?>

<Spase xmlns="http://www.spase-group.org/data/schema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.spase-group.org/data/schema http://cdpp.irap.omp.eu/AMDA-NG/public/schemas/spase-amda-1_2_0.xsd">

  <Version>2.2.6</Version>
  <NumericalData>
    <ResourceID>spase://CDPP/NumericalData/AMDA/PioneerVenusOrbiter/Ephemeris/pvo-orb-pos</ResourceID>
    <ResourceHeader>

      <ResourceName>orbit venus</ResourceName>

      <ReleaseDate>2015-10-14T16:46:29Z</ReleaseDate>

      <Description>This dataset is   
sampled every 12 seconds near periapsis, and at 1 minute or 10 minute rates  
in the solar wind, the lowest rates near apoapsis.  Planetocentric and       
heliocentric position vectors and solar zenith angle (Sun-Venus-PVO) are     
also provided. The VSO parameters are derived from the PVO Supplemental      
Experimenter Data Records (SEDR), other parameters are taken                 
directly from the SEDR dataset. Due to the way the source trajectory files were generated and the
     lack of good quality tracking data for some periods during the
     mission the trajectory coverage during the interval above is NOT
     continuous and has almost 100 gaps ranging in size from minutes to
     hours to days to many months</Description>

      <Contact>

        <PersonID>spase://SMWG/Person/Raymond.J.Walker</PersonID>
        <Role>GeneralContact</Role>

      </Contact>
    </ResourceHeader>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/CDPP/AMDA</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <AccessURL>
        <URL>http://amda.cdpp.eu</URL>
      </AccessURL>

      <Format>Text</Format>

    </AccessInformation>
    <ProviderName>PDS</ProviderName>

    <ProviderResourceName>PVO-V-POS-5--VSOCOORDS-12SEC-V1.0</ProviderResourceName>

    <InstrumentID>spase://CDPP/Instrument/AMDA/PioneerVenusOrbiter/Ephemeris</InstrumentID>
    <MeasurementType>Ephemeris</MeasurementType>
    <TemporalDescription>
      <TimeSpan>

        <StartDate>1978-12-05T06:55:10Z</StartDate>
        <StopDate>1992-10-07T18:14:07Z</StopDate>

      </TimeSpan>
      <Cadence_Min>PT12S</Cadence_Min>
      <Cadence_Max>PT600S</Cadence_Max>
    </TemporalDescription>
    <ObservedRegion>Venus</ObservedRegion>
    <Parameter>
      <Name>xyz_vso</Name>
      <ParameterKey>pvo_orb_xyzvso</ParameterKey>
      <Description>Pioneer Venus Orbiter trajectory in VSO coordinates</Description>
      <Ucd>pos.bodyrc;instr.obsty</Ucd>

      <Units>Rv</Units>
      <CoordinateSystem>
        <CoordinateRepresentation>Cartesian</CoordinateRepresentation>
        <CoordinateSystemName>VSO</CoordinateSystemName>
      </CoordinateSystem>

      <RenderingHints>
        <DisplayType>TimeSeries</DisplayType>
      </RenderingHints>
      <Structure>
        <Size>3</Size>
        <Element>
          <Name>x</Name>

          <Index>1</Index>

          <ParameterKey>pvo_orb_xyzvso(0)</ParameterKey>
        </Element>
        <Element>
          <Name>y</Name>

          <Index>2</Index>

          <ParameterKey>pvo_orb_xyzvso(1)</ParameterKey>
        </Element>
        <Element>
          <Name>z</Name>

          <Index>3</Index>

          <ParameterKey>pvo_orb_xyzvso(2)</ParameterKey>
        </Element>
      </Structure>
      <Support>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>

      <Name>distance pvo-venus</Name>
      <ParameterKey>pvo_orb_r</ParameterKey>

      <Description>Range of the spacecraft from the Jupiter center of mass</Description>
      <Ucd>pos.distance;instr.obsty</Ucd>

      <Units>Rv</Units>

      <RenderingHints>
        <DisplayType>TimeSeries</DisplayType>
      </RenderingHints>
      <Support>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>altitude</Name>
      <ParameterKey>pvo_orb_alt</ParameterKey>
      <Units>km</Units>
      <RenderingHints>
        <DisplayType>TimeSeries</DisplayType>
      </RenderingHints>
      <Support>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>solar_zenith_angle</Name>
      <ParameterKey>pvo_orb_sza</ParameterKey>
      <Units>degrees</Units>
      <RenderingHints>
        <DisplayType>TimeSeries</DisplayType>
      </RenderingHints>
      <Support>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>

      <Name>lon planetographic (east)</Name>

      <ParameterKey>pvo_orb_lon</ParameterKey>
      <Description>Planetographic longitude of the spacecraft</Description>
      <Ucd>pos.bodyrc.long;instr.obsty</Ucd>
      <Units>deg</Units>
      <RenderingHints>
        <DisplayType>TimeSeries</DisplayType>
      </RenderingHints>
      <Support>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>

      <Name>lat planetographic</Name>

      <ParameterKey>pvo_orb_lat</ParameterKey>
      <Description>Planetographic latitude of the spacecraft</Description>
      <Ucd>pos.bodyrc.lat</Ucd>
      <Units>deg</Units>
      <RenderingHints>
        <DisplayType>TimeSeries</DisplayType>
      </RenderingHints>
      <Support>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>xyz_spin_axis_vso</Name>
      <ParameterKey>pvo_orb_spvso</ParameterKey>

       <CoordinateSystem>
        <CoordinateRepresentation>Cartesian</CoordinateRepresentation>
        <CoordinateSystemName>VSO</CoordinateSystemName>
      </CoordinateSystem>

      <RenderingHints>
        <DisplayType>TimeSeries</DisplayType>

      </RenderingHints> 

      <Structure>
        <Size>3</Size>
        <Element>
          <Name>x</Name>

          <Index>1</Index>

          <ParameterKey>pvo_orb_spvso(0)</ParameterKey>
        </Element>
        <Element>
          <Name>y</Name>

          <Index>2</Index>

          <ParameterKey>pvo_orb_spvso(1)</ParameterKey>
        </Element>
        <Element>
          <Name>z</Name>

          <Index>3</Index>

          <ParameterKey>pvo_orb_spvso(2)</ParameterKey>
        </Element>
      </Structure>
      <Support>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>

      <Name>lon_iau_sun</Name>

      <ParameterKey>pvo_orb_clon</ParameterKey>
      <Ucd>pos.bodyrc.long;instr.obsty</Ucd>
      <Units>deg</Units>
      <RenderingHints>
        <DisplayType>TimeSeries</DisplayType>
      </RenderingHints>
      <Support>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>

      <Name>lat_iau_sun</Name>

      <ParameterKey>pvo_orb_clat</ParameterKey>
      <Ucd>pos.bodyrc.lat</Ucd>
      <Units>deg</Units>
      <RenderingHints>
        <DisplayType>TimeSeries</DisplayType>
      </RenderingHints>
      <Support>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>

      <Name>earth lon_iau_sun</Name>

      <ParameterKey>pvo_orb_elon</ParameterKey>
      <Ucd>pos.bodyrc.long;instr.obsty</Ucd>
      <Units>degrees</Units>
      <RenderingHints>
        <DisplayType>TimeSeries</DisplayType>
      </RenderingHints>
      <Support>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>

      <Name>distance pvo-sun</Name>

      <ParameterKey>pvo_orb_rsun</ParameterKey>
      <Ucd>pos.distance;instr.obsty</Ucd>
      <Units>AU</Units>
      <RenderingHints>
        <DisplayType>TimeSeries</DisplayType>
      </RenderingHints>
      <Support>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
  </NumericalData>
</Spase>