{ "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://www.spase-group.org/data/schema/spase-2.4.1.xsd", "Version": "2.4.1", "NumericalData": { "ResourceID": "spase://CNES/NumericalData/CDPP-AMDA/Ephemerides/europa-orb-all1s", "ResourceHeader": { "ResourceName": "Astronomical Objects Ephemerides - Planets and Moons - Jupiter Moons - Europa - 1 sec", "ReleaseDate": "2024-08-30T11:03:25Z", "Description": "Europa orbits Jupiter in just over three and a half days, \n with an orbital radius of about 670,900 km. With an eccentricity of only \n 0.009, the orbit itself is nearly circular, and the orbital inclination \n relative to Jupiter's equatorial plane is small, at 0.470°. \n Like its fellow Galilean satellites, Europa is tidally locked to Jupiter, \n with one hemisphere of Europa constantly facing Jupiter. Because of this, \n there is a sub-Jovian point on Europa's surface, from which Jupiter would \n appear to hang directly overhead. Europa's prime meridian is the line \n intersecting this point. Research suggests that the tidal locking may not be \n full, as a non-synchronous rotation has been proposed: Europa spins faster \n than it orbits, or at least did so in the past. \n This suggests an asymmetry in internal mass distribution and that a layer of \n subsurface liquid separates the icy crust from the rocky interior.\n\nThe slight eccentricity of Europa's orbit, maintained by the gravitational disturbances from \nthe other Galileans, causes Europa's sub-Jovian point to oscillate around a mean position. \nAs Europa comes slightly nearer to Jupiter, Jupiter's gravitational attraction increases, \ncausing Europa to elongate towards and away from it. As Europa moves slightly away from \nJupiter, Jupiter's gravitational force decreases, causing Europa to relax back into a more \nspherical shape, and creating tides in its ocean. The orbital eccentricity of Europa is \ncontinuously pumped by its mean-motion resonance with Io. \nThus, the tidal flexing kneads Europa's interior and gives it a source of heat, possibly \nallowing its ocean to stay liquid while driving subsurface geological processes.\nThe ultimate source of this energy is Jupiter's rotation, which is tapped by Io \nthrough the tides it raises on Jupiter and is transferred to Europa and Ganymede by the \norbital resonance.", "Contact": { "PersonID": "spase://CNES/Person/CDPP-AMDA/NAIF", "Role": "PrincipalInvestigator" }, "Association": { "AssociationID": "jup-moons-orb", "AssociationType": "PartOf", "Note": "Jupiter Moons" } }, "AccessInformation": [ { "RepositoryID": "spase://SMWG/Repository/CDPP/AMDA", "Availability": "Online", "AccessRights": "Open", "AccessURL": { "Name": "CDPP/AMDA HAPI Server", "URL": "https://amda.irap.omp.eu/service/hapi", "Style": "HAPI", "ProductKey": "europa-orb-all1s", "Description": "Web Service to this product using the HAPI interface." }, "Format": "CSV", "Acknowledgement": "Thank you for acknowledging the use of AMDA in publications with wording like \"Data analysis was performed with the AMDA science analysis system provided by the Centre de Données de la Physique des Plasmas (CDPP) supported by CNRS, CNES, Observatoire de Paris and Université Paul Sabatier, Toulouse\". See the Rules of the road at https://amda.cdpp.eu/help/policy.html . Please acknowledge the Data Providers." }, { "RepositoryID": "spase://SMWG/Repository/CDPP/AMDA", "Availability": "Online", "AccessRights": "Open", "AccessURL": { "Name": "CDPP/AMDA Web application", "URL": "https://amda.cdpp.eu", "Description": "Access to Data via CDPP/AMDA Web application." }, "Format": [ "CSV", "VOTable", "CDF", "PNG" ], "Acknowledgement": "Thank you for acknowledging the use of AMDA in publications with wording like \"Data analysis was performed with the AMDA science analysis system provided by the Centre de Données de la Physique des Plasmas (CDPP) supported by CNRS, CNES, Observatoire de Paris and Université Paul Sabatier, Toulouse\". See the Rules of the road at https://amda.cdpp.eu/help/policy.html . Please acknowledge the Data Providers." } ], "ProviderName": "SPICE", "InstrumentID": "spase://CNES/Instrument/CDPP-AMDA/Ephemerides", "MeasurementType": "Ephemeris", "TemporalDescription": { "TimeSpan": { "StartDate": "1970-01-01T00:00:05Z", "StopDate": "2037-01-02T00:00:04Z" }, "Cadence": "PT1S" }, "ObservedRegion": [ "Jupiter", "Jupiter.Europa" ], "Parameter": [ { "Name": "xyz_jsm", "ParameterKey": "eur_jup_jsm1s", "Units": "Rj", "CoordinateSystem": { "CoordinateRepresentation": "Cartesian", "CoordinateSystemName": "JSM" }, "RenderingHints": { "DisplayType": "TimeSeries" }, "Structure": { "Size": "3", "Element": [ { "Name": "x", "Index": "1", "ParameterKey": "eur_jup_jsm1s(0)" }, { "Name": "y", "Index": "2", "ParameterKey": "eur_jup_jsm1s(1)" }, { "Name": "z", "Index": "3", "ParameterKey": "eur_jup_jsm1s(2)" } ] }, "Support": { "SupportQuantity": "Positional" } }, { "Name": "xyz_jso", "ParameterKey": "eur_jup_jso1s", "Units": "Rj", "CoordinateSystem": { "CoordinateRepresentation": "Cartesian", "CoordinateSystemName": "JSO" }, "RenderingHints": { "DisplayType": "TimeSeries" }, "Structure": { "Size": "3", "Element": [ { "Name": "x", "Index": "1", "ParameterKey": "eur_jup_jso1s(0)" }, { "Name": "y", "Index": "2", "ParameterKey": "eur_jup_jso1s(1)" }, { "Name": "z", "Index": "3", "ParameterKey": "eur_jup_jso1s(2)" } ] }, "Support": { "SupportQuantity": "Positional" } }, { "Name": "xyz_IAU_jupiter", "ParameterKey": "eur_jup_xyz1s", "Units": "Rj", "RenderingHints": { "DisplayType": "TimeSeries" }, "Structure": { "Size": "3", "Element": [ { "Name": "x", "Index": "1", "ParameterKey": "eur_jup_xyz1s(0)" }, { "Name": "y", "Index": "2", "ParameterKey": "eur_jup_xyz1s(1)" }, { "Name": "z", "Index": "3", "ParameterKey": "eur_jup_xyz1s(2)" } ] }, "Support": { "SupportQuantity": "Positional" } }, { "Name": "distance europa-jupiter", "ParameterKey": "eur_jup_r1s", "Units": "Rj", "RenderingHints": { "DisplayType": "TimeSeries" }, "Support": { "SupportQuantity": "Positional" } }, { "Name": "latitude IAU_jupiter", "ParameterKey": "eur_jup_lat1s", "Units": "deg", "Support": { "SupportQuantity": "Positional" } }, { "Name": "longitude IAU_jupiter", "ParameterKey": "eur_jup_lon1s", "Units": "deg", "Support": { "SupportQuantity": "Positional" } }, { "Name": "mlat", "ParameterKey": "eur_jup_mlat1s", "Description": "mlat=10.31°xcos(196.61°-lon_iau_west)+lat_iau", "Units": "deg", "Support": { "SupportQuantity": "Positional" } } ] } } }