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<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/Ephemerides/mercury-orb-all</ResourceID>
        <ResourceHeader>
            <ResourceName>Mercury</ResourceName>
            <ReleaseDate>2015-10-14T11:46:29Z</ReleaseDate>

            <Description>  * The solar rotation axis is the primary vector: the Z axis points in the solar north direction;  
             * The solar ascending node on the ecliptic of J2000 forms the X axis. 
             * The Y axis is Z cross X, completing the right-handed reference frame.
            Heliocentric Earth Ecliptic (HEE) Frame :
              * The position of the earth relative to the sun is the primary vector: the X axis points from the sun to the earth.
              * The northern surface normal to the mean ecliptic of date is the secondary vector: the Z axis is the component of this vector orthogonal to the X axis.
              * The Y axis is Z cross X, completing the right-handed reference frame.              
              Solar longitude (Ls) :
  * The solar longitude Ls is the Planet-Sun angle, measured from the Northern Hemisphere spring equinox where Ls=0.
Ls=90 thus corresponds to northern summer solstice, just as Ls=180 marks the northern autumn equinox and Ls=270 the northern winter solstice.</Description>

            <Contact>

                <PersonID>spase://CDPP/Person/NAIF</PersonID>
                <Role>PrincipalInvestigator</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.ASCII</Format>
        </AccessInformation>
        <ProviderName>SPICE</ProviderName>
        <InstrumentID>spase://CDPP/Instrument/AMDA/Ephemerides</InstrumentID>
        <MeasurementType>Ephemeris</MeasurementType>
        <TemporalDescription>
            <TimeSpan>

                <StartDate>1970-01-01T00:00:05Z</StartDate>

                <StopDate>2035-01-19T22:00:04Z</StopDate>

            </TimeSpan>
            <Cadence>PT60M</Cadence>
        </TemporalDescription>

        <ObservedRegion>Mercury</ObservedRegion>

        <Parameter>
            <Name>xyz_hee</Name>
            <ParameterKey>xyz_mercury_hee</ParameterKey>

            <Ucd/>

            <Units>AU</Units>
            <CoordinateSystem>
                <CoordinateRepresentation>Cartesian</CoordinateRepresentation>
                <CoordinateSystemName>HEE</CoordinateSystemName>
            </CoordinateSystem>
            <RenderingHints>
                <DisplayType>TimeSeries</DisplayType>
            </RenderingHints>
            <Structure>
                <Size>3</Size>
                <Element>

                    <Name>x</Name>

                    <Index>1</Index>

                    <ParameterKey>xyz_mercury_hee(0)</ParameterKey>
                </Element>
                <Element>

                    <Name>y</Name>

                    <Index>2</Index>

                    <ParameterKey>xyz_mercury_hee(1)</ParameterKey>
                </Element>
                <Element>

                    <Name>z</Name>

                    <Index>3</Index>

                    <ParameterKey>xyz_mercury_hee(2)</ParameterKey>
                </Element>
            </Structure>
            <Support>
                <SupportQuantity>Positional</SupportQuantity>
            </Support>
        </Parameter>
        <Parameter>
            <Name>xyz_hci</Name>
            <ParameterKey>xyz_mercury_hci</ParameterKey>

            <Ucd/>

            <Units>AU</Units>
            <CoordinateSystem>
                <CoordinateRepresentation>Cartesian</CoordinateRepresentation>
                <CoordinateSystemName>HCI</CoordinateSystemName>
            </CoordinateSystem>
            <RenderingHints>
                <DisplayType>TimeSeries</DisplayType>
            </RenderingHints>
            <Structure>
                <Size>3</Size>
                <Element>

                    <Name>x</Name>

                    <Index>1</Index>

                    <ParameterKey>xyz_mercury_hci(0)</ParameterKey>
                </Element>
                <Element>

                    <Name>y</Name>

                    <Index>2</Index>

                    <ParameterKey>xyz_mercury_hci(1)</ParameterKey>
                </Element>
                <Element>

                    <Name>z</Name>

                    <Index>3</Index>

                    <ParameterKey>xyz_mercury_hci(2)</ParameterKey>
                </Element>
            </Structure>
            <Support>
                <SupportQuantity>Positional</SupportQuantity>
            </Support>
        </Parameter> 
        <Parameter>
            <Name>distance mercury-sun</Name>
            <ParameterKey>r_mercury</ParameterKey>

            <Ucd/>

            <Units>AU</Units> 
             <Support>
                <SupportQuantity>Positional</SupportQuantity>
            </Support>

        </Parameter>

        <Parameter>

            <Name>latitude HCI</Name>
            <ParameterKey>mercury_hci_lat</ParameterKey>

            <Ucd/>

            <Units>deg</Units>

        </Parameter>
        <Parameter>

            <Name>longitude HCI</Name>
            <ParameterKey>mercury_hci_lon</ParameterKey>
            <Ucd/>
            <Units>deg</Units>
        </Parameter> 
        <Parameter>

            <Name>latitude IAU_sun</Name>

            <ParameterKey>mercury_sol_lat</ParameterKey>

            <Ucd/>

            <Units>deg</Units>

            <Support>
                <SupportQuantity>Positional</SupportQuantity>
            </Support> 
        </Parameter>

        <Parameter>
            <Name>longitude IAU_sun</Name>
            <ParameterKey>mercury_sol_lon</ParameterKey>
            <Ucd/>
            <Units>deg</Units>
             <Support>
                <SupportQuantity>Positional</SupportQuantity>
            </Support>
        </Parameter>

         <Parameter>
            <Name>solar longitude (Ls)</Name>
            <ParameterKey>mercury_sol_ls</ParameterKey>
            <Ucd/>

            <Units>deg</Units>

             <Support>
                <SupportQuantity>Positional</SupportQuantity>
            </Support>

        </Parameter>
    </NumericalData>
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