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    <ResourceHeader>
      <ResourceName>ISEE 3 12-min Trajectory Data</ResourceName>
      <ReleaseDate>2025-12-04T13:29:39Z</ReleaseDate>
      <RevisionHistory>
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          <ReleaseDate>2025-05-15T21:14:40Z</ReleaseDate>
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        <RevisionEvent>
          <ReleaseDate>2025-12-04T13:29:39Z</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>
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      <Description>ISEE 3 positions.</Description>
      <Contact>
        <PersonID>spase://SMWG/Person/Jan.Merka</PersonID>
        <Role>MetadataContact</Role>
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      <PriorID>spase://VEPO/NumericalData/ISEE3/Ephemeris/PT12M</PriorID>
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      <Availability>Online</Availability>
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          <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>SSCWeb</Name>
        <URL>https://sscweb.gsfc.nasa.gov/cgi-bin/Locator.cgi</URL>
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      <Format>Text</Format>
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    <InstrumentID>spase://SMWG/Instrument/ISEE3/Ephemeris</InstrumentID>
    <MeasurementType>Ephemeris</MeasurementType>
    <TemporalDescription>
      <TimeSpan>
        <StartDate>1978-08-16T00:00:00Z</StartDate>
        <StopDate>1984-02-01T00:00:00Z</StopDate>
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      <Cadence>PT12M</Cadence>
    </TemporalDescription>
    <ObservedRegion>Heliosphere.NearEarth</ObservedRegion>
    <Parameter>
      <Name>Year</Name>
      <ParameterKey>Field 1</ParameterKey>
      <Description>Year</Description>
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        <SupportQuantity>Temporal</SupportQuantity>
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    <Parameter>
      <Name>Doy</Name>
      <ParameterKey>Field 2</ParameterKey>
      <Description>Day of Year</Description>
      <Units>Deg</Units>
      <Support>
        <SupportQuantity>Temporal</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>Time</Name>
      <ParameterKey>Field 3</ParameterKey>
      <Description>Hour and Minutes (HH:MM)</Description>
      <Support>
        <SupportQuantity>Temporal</SupportQuantity>
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      <Name>GSE X</Name>
      <ParameterKey>Field 4</ParameterKey>
      <Description>GSE X Component</Description>
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        <CoordinateSystemName>GSE</CoordinateSystemName>
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      <Support>
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      <ParameterKey>Field 5</ParameterKey>
      <Description>GSE Y Component</Description>
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      <Support>
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      <Name>GSE Z Component</Name>
      <ParameterKey>Field 6</ParameterKey>
      <Description>GSE Z Component</Description>
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        <CoordinateSystemName>GSE</CoordinateSystemName>
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        <SupportQuantity>Positional</SupportQuantity>
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    <Parameter>
      <Name>GSE Latitude</Name>
      <ParameterKey>Field 7</ParameterKey>
      <Description>GSE Latitude</Description>
      <Units>Degrees</Units>
      <CoordinateSystem>
        <CoordinateRepresentation>Cartesian</CoordinateRepresentation>
        <CoordinateSystemName>GSE</CoordinateSystemName>
      </CoordinateSystem>
      <Support>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>GSE Longitude</Name>
      <ParameterKey>Field 8</ParameterKey>
      <Description>GSE Longitude</Description>
      <Units>Degrees</Units>
      <CoordinateSystem>
        <CoordinateRepresentation>Cartesian</CoordinateRepresentation>
        <CoordinateSystemName>GSE</CoordinateSystemName>
      </CoordinateSystem>
      <Support>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
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