<?xml version="1.0" encoding="UTF-8"?>
<?xml-model href="https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1M00.sch"
    schematypens="http://purl.oclc.org/dsdl/schematron"?>
<?xml-model href="https://pds.nasa.gov/pds4/msn/v1/PDS4_MSN_1M00_1303.sch"
   schematypens="http://purl.oclc.org/dsdl/schematron"?>
<Product_Collection
    xmlns="http://pds.nasa.gov/pds4/pds/v1"
    xmlns:msn="http://pds.nasa.gov/pds4/msn/v1"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="
    http://pds.nasa.gov/pds4/pds/v1               https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1M00.xsd
      http://pds.nasa.gov/pds4/msn/v1               https://pds.nasa.gov/pds4/msn/v1/PDS4_MSN_1M00_1303.xsd
     ">
    <Identification_Area>
        <logical_identifier>urn:nasa:pds:mgs-rss:data-sha</logical_identifier>
        <version_id>1.0</version_id>
        <title>MGS Derived Spherical Harmonic Model ASCII Data Collection</title>
        <information_model_version>1.22.0.0</information_model_version>
        <product_class>Product_Collection</product_class>
        <Citation_Information>
            <publication_year>2025</publication_year>
            <doi>10.17189/mw97-6w55</doi>
            <description>
                This collection contains coefficients and related data for a spherical             
                harmonic model of the Mars gravity field.  Input data are from radio 
                tracking of the Mars Global Surveyor spacecraft. Coordinate system is 
                IAU 1991, unless specified. The data cover
                1997-09-12T00:00:00Z to 2004-12-05T14:00:00.000Z.          
            </description>
            <List_Author>
                <Person>
                    <given_name>David</given_name>
                    <family_name>Smith</family_name>
                    <sequence_number>1</sequence_number>
                    <Affiliation>
                        <organization_name>Goddard Space Flight Center</organization_name>
                        <organization_rorid>https://ror.org/0171mag52</organization_rorid>
                    </Affiliation>
                </Person>
                <Person>
                    <given_name>William</given_name>
                    <family_name>Sjogren</family_name>
                    <sequence_number>2</sequence_number>
                    <Affiliation>
                        <organization_name>Jet Propulsion Laboratory</organization_name>
                        <organization_rorid>https://ror.org/027k65916</organization_rorid>
                    </Affiliation>
                </Person>
            </List_Author>
        </Citation_Information>
        <Modification_History>
            <Modification_Detail>
                <modification_date>2025-02-12</modification_date>
                <version_id>1.0</version_id>
                <description>
                    This is the original version of this collection in PDS4.
                    It was migrated to PDS4 from the PDS3 data set MGS-M-RSS-5-SDP-V1.0.
                </description>
            </Modification_Detail>
        </Modification_History>
    </Identification_Area>
    <Context_Area>
        <Time_Coordinates>
            <start_date_time>1997-09-12T00:00:00Z</start_date_time>
            <stop_date_time>2004-12-05T14:00:00.000Z</stop_date_time>
        </Time_Coordinates>
        <Primary_Result_Summary>
            <purpose>Science</purpose>
            <processing_level>Derived</processing_level> 
            <description>MGS Spherical Harmonic Model ASCII Data</description>
        </Primary_Result_Summary> 
        <Investigation_Area>
            <name>Mars Global Surveyor</name>
            <type>Mission</type>
            <Internal_Reference>
                <lid_reference>urn:nasa:pds:context:investigation:mission.mars_global_surveyor</lid_reference> 
                <reference_type>collection_to_investigation</reference_type>
            </Internal_Reference> 
        </Investigation_Area> 
        <Observing_System>
            <Observing_System_Component>
                <name>Mars Global Surveyor</name>
                <type>Host</type> 
                <Internal_Reference>
                    <lid_reference>urn:nasa:pds:context:instrument_host:spacecraft.mgs</lid_reference> 
                    <reference_type>is_instrument_host</reference_type> 
                </Internal_Reference> 
            </Observing_System_Component> 
            <Observing_System_Component>
                <name>Radio Science Subsystem (RSS)</name>
                <type>Instrument</type> 
                <Internal_Reference>
                    <lid_reference>urn:nasa:pds:context:instrument:mgs.rss</lid_reference>
                    <reference_type>is_instrument</reference_type>
                </Internal_Reference> 
            </Observing_System_Component> 
        </Observing_System>  
        <Target_Identification> 
            <name>Mars</name> 
            <type>Planet</type>
            <Internal_Reference>
                <lid_reference>urn:nasa:pds:context:target:planet.mars</lid_reference> 
                <reference_type>data_to_target</reference_type> 
            </Internal_Reference> 
        </Target_Identification>
        <Discipline_Area>
            <msn:Mission_Information>
                <msn:Orbital_Mission>
                    <msn:start_orbit_number>19</msn:start_orbit_number>
                    <msn:stop_orbit_number>4375</msn:stop_orbit_number>
                </msn:Orbital_Mission>
            </msn:Mission_Information>
        </Discipline_Area>
    </Context_Area>
    <Reference_List>
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:mgs-rss:browse</lid_reference>
            <reference_type>collection_to_browse</reference_type>
        </Internal_Reference>
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:mgs-rss:data-maps</lid_reference>
            <reference_type>collection_to_data</reference_type>
        </Internal_Reference>
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:mgs-rss:data-shb</lid_reference>
            <reference_type>collection_to_data</reference_type>
        </Internal_Reference>
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:mgs-rss:document:data-mgs-rss-desc</lid_reference>
            <reference_type>collection_to_document</reference_type>
        </Internal_Reference>
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:mgs-rss:document:mgs-rss-sha-sis</lid_reference>
            <reference_type>collection_to_document</reference_type>
        </Internal_Reference>
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:mgs-rss:document:errata</lid_reference>
            <reference_type>collection_to_errata</reference_type>
        </Internal_Reference>
        <External_Reference>
            <doi>10.1007/BF00051818</doi>
            <reference_text>
                Davies, M. E., V. K. Abalakin, A. Brahic, M. Bursa, B.H. Chovitz,
                J. H. Lieske, P. K. Seidelmann, A. T. Sinclair, Y. S. Tjuflin, 
                Report of the IAU/IAG/COSPAR Working Group on Cartographic Coordinates 
                and Rotational Elements of the Planets and Satellites: 1991, 
                Celestial Mechanics and Dynamical Astronomy, 53, 377-397, 1992.
            </reference_text>
        </External_Reference>
        <External_Reference>
            <doi>10.1023/A:1013939327465</doi>
            <reference_text> 
                P.K.S., Abalakin, V.K., Bursa, M. et al. Report of the IAU/IAG Working Group 
                on Cartographic Coordinates and Rotational Elements of the Planets and Satellites: 
                2000. Celestial Mechanics and Dynamical Astronomy 82, 83-111 (2002).
            </reference_text>
        </External_Reference>
        <External_Reference>
            <doi>10.1029/2000JE001426</doi>
            <reference_text> 
                Lemoine, F. G., D. E. Smith, D. D. Rowlands, M. T. Zuber, G. A. Neumann, 
                D. S. Chinn, and D. E. Pavlis (2001), An improved solution of the gravity 
                field of Mars (GMM-2B) from Mars Global Surveyor, J. Geophys. Res., 106(E10), 
                23359-23376
            </reference_text>
        </External_Reference>
        <External_Reference>
            <doi>10.1007/BF00806341</doi>
            <reference_text> 
                Lerch, F.J., Optimum Data Weighting and Error Calibration 
                for Estimation of Gravitational Parameters, Bulletin of Geodesy, 
                65, 44-52, 1991.
            </reference_text>
        </External_Reference>
        <External_Reference>
            <reference_text> 
                Kaula, W.M., Theory of Satellite Geodesy, Blaisdell, Waltham, MA, 1966.
            </reference_text>
        </External_Reference>
        <External_Reference>
            <reference_text> 
                Lemoine, F. G., D. D. Rowlands, G. A. Neumann, D. E. Smith, D. E. Pavlis, 
                D. S. Chinn, S. B. Luthcke, Precise orbit determination for Mars Global Surveyor 
                during hiatus and SPO, Spaceflight Mechanics 1999 R. H. Bishop, et al.AAS Paper 
                99-147, 649-666Am. Astron. Soc., Washington, D.C., 1999a.
            </reference_text>
        </External_Reference>
        <External_Reference>
            <doi>10.1126/science.286.5437.94</doi>
            <reference_text> 
                Smith DE, Sjogren WL, Tyler GL, Balmino G, Lemoine FG, Konopliv AS. 
                The gravity field of Mars: results from Mars Global Surveyor. Science. 
                1999 Oct 1;286(5437):94-7.
            </reference_text>
        </External_Reference>
        <External_Reference>
            <doi>10.1126/science.278.5344.1749</doi>
            <reference_text> 
                W. M. Folkner et al.,Interior Structure and Seasonal Mass 
                Redistribution of Mars from Radio Tracking of Mars Pathfinder.
                Science 278,1749-1752(1997).
            </reference_text>
        </External_Reference>
        <External_Reference>
            <doi>10.1029/JB084iB11p06231</doi>
            <reference_text> 
                Reasenberg, R. D., and R. W. King, The rotation of Mars, 
                J. Geophys. Res., 84(B11), 6231-6240 (1979).
            </reference_text>
        </External_Reference>
        <External_Reference>
            <doi>10.1126/science.1079645</doi>
            <reference_text> 
                C. F. Yoder et al., Fluid Core Size of Mars from Detection of the 
                Solar Tide. Science 300, 299-303(2003).
            </reference_text>
        </External_Reference>  
        <Source_Product_External> 
            <external_source_product_identifier>MGS-M-RSS-5-SDP-V1.0</external_source_product_identifier> 
            <reference_type>data_to_derived_source_product</reference_type>
            <doi>10.17189/1519757</doi> 
            <curating_facility>PDS Planetary Plasma Interactions Node</curating_facility> 
            <description> 
                This is the first version converted to PDS4. The DOI references the source PDS3 data set.  
            </description>
        </Source_Product_External>
    </Reference_List> 
    <Collection>
        <collection_type>Data</collection_type>
        <description>
            MGS Derived Spherical Harmonic Model ASCII Data Collection
        </description>
    </Collection>
    <File_Area_Inventory>
        <File>
            <file_name>collection_data_sha_1.0.csv</file_name>
            <creation_date_time>2024-05-30T22:15:54</creation_date_time>
            <file_size unit="byte">893</file_size>
            <md5_checksum>721e81187cf8777b2581efe72f516814</md5_checksum>
        </File>
        <Inventory>
            <offset unit="byte">0</offset>
            <parsing_standard_id>PDS DSV 1</parsing_standard_id>
            <records>19</records>
            <record_delimiter>Carriage-Return Line-Feed</record_delimiter>
            <field_delimiter>Comma</field_delimiter>
            <Record_Delimited>
                <fields>2</fields>
                <groups>0</groups>
                <Field_Delimited>
                    <name>Member Status</name>
                    <field_number>1</field_number>
                    <data_type>ASCII_String</data_type>
                    <maximum_field_length unit="byte">1</maximum_field_length>
                </Field_Delimited>
                <Field_Delimited>
                    <name>LIDVID_LID</name>
                    <field_number>2</field_number>
                    <data_type>ASCII_LIDVID_LID</data_type>
                    <maximum_field_length unit="byte">255</maximum_field_length>
                </Field_Delimited>
            </Record_Delimited>
            <reference_type>inventory_has_member_product</reference_type>
        </Inventory>
    </File_Area_Inventory>
</Product_Collection>
