{ "id": "ELA_L1_STATE", "url": "http://hpde.io/NASA/NumericalData/ELFIN/A/Ephemeris/PT1S", "data-file": "./data/spase_hpde_io/info/ELA_L1_STATE.json", "data": { "Spase": { "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance", "xmlns": "http://www.spase-group.org/data/schema", "xsi:schemaLocation": "https://www.spase-group.org/data/schema https://www.spase-group.org/data/schema/spase-2.7.1.xsd", "Version": "2.7.1", "MetadataRightsList": { "Rights": { "SchemeURI": "https://spdx.org/licenses/", "RightsIdentifierScheme": "SPDX", "RightsIdentifier": "CC0-1.0", "RightsURI": "https://spdx.org/licenses/CC0-1.0.html", "RightsName": "Creative Commons Zero v1.0 Universal", "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions" } }, "NumericalData": { "ResourceID": "spase://NASA/NumericalData/ELFIN/A/Ephemeris/PT1S", "NamingAuthority": "NASA", "ResourceType": "NumericalData", "ResourceHeader": { "ResourceName": "ELFIN A Ephemeris (State) CubeSat Position, Velocity, Attitude, Spin Rate, and Spin Phase, Level 1 (L1), 1 s Data", "DOI": "https://doi.org/10.48322/wvrj-hh66", "ReleaseDate": "2025-12-04T13:29:10Z", "RevisionHistory": { "RevisionEvent": [ { "ReleaseDate": "2021-03-29T17:14:50Z", "Note": "Only known prior ReleaseDate of the metadata" }, { "ReleaseDate": "2025-11-14T16:01:57Z", "Note": "Added PublicationInfo. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB" }, { "ReleaseDate": "2025-12-04T13:29:10Z", "Note": "Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB" } ] }, "Description": "The Electron Losses and Fields Investigation (ELFIN) Mission is a Space Weather Mission using three Scientific Instruments in a 3U+ CubeSat. The Instruments measure Wave and Particle Data. This Data Product is a Probe State File that contains CubeSat Position, Velocity, Spin Attitude, Spin Rate, and Spin Phase Data.", "Acknowledgement": "Please acknowledge the Principal Investigator, V. Angelopoulos, NASA, and NSF for providing the Data. Open Data for Scientific Use.", "PublicationInfo": { "Authors": "Angelopoulos, Vassilis", "PublicationDate": "2025-11-14T16:01:57Z", "PublishedBy": "Space Physics Data Facility" }, "Contact": [ { "PersonID": "spase://SMWG/Person/Vassilis.Angelopoulos", "Role": "PrincipalInvestigator" }, { "PersonID": "spase://SMWG/Person/Robert.M.Candey", "Role": "MetadataContact" }, { "PersonID": "spase://SMWG/Person/Lee.Frost.Bargatze", "Role": "MetadataContact" } ], "InformationURL": [ { "Name": "ELFIN Mission Overview Web Page, UCLA", "URL": "https://elfin.igpp.ucla.edu/about", "Description": "Electron Losses and Fields Investigation, ELFIN, Mission Overview Web Page, University of California, Los Angeles" }, { "Name": "ELFIN Attitude Determination and Control Subsystem Web Page, UCLA", "URL": "https://elfin.igpp.ucla.edu/adcs", "Description": "ELFIN Attitude Determination and Control Subsystem, ADCS, Web Page, University of California, Los Angeles" } ], "PriorID": "spase://VSPO/NumericalData/ELFIN/A/Ephemeris/PT1S" }, "AccessInformation": [ { "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF", "Availability": "Online", "AccessRights": "Open", "RightsList": { "Rights": { "SchemeURI": "https://spdx.org/licenses/", "RightsIdentifierScheme": "SPDX", "RightsIdentifier": "CC0-1.0", "RightsURI": "https://spdx.org/licenses/CC0-1.0.html", "RightsName": "Creative Commons Zero v1.0 Universal", "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products" } }, "AccessURL": { "Name": "FTPS from SPDF (not with most browsers)", "URL": "ftps://spdf.gsfc.nasa.gov/pub/data/elfin/elfina/ephemeris", "Description": "Access to Data in CDF Format via ftp from SPDF" }, "Format": "CDF", "Encoding": "None", "Acknowledgement": "Please acknowledge the Principal Investigator, V. Angelopoulos, NASA, and NSF for providing the Data. Open Data for Scientific Use. Please acknowledge the Data Providers and CDAWeb when using these Data." }, { "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF", "Availability": "Online", "AccessRights": "Open", "RightsList": { "Rights": { "SchemeURI": "https://spdx.org/licenses/", "RightsIdentifierScheme": "SPDX", "RightsIdentifier": "CC0-1.0", "RightsURI": "https://spdx.org/licenses/CC0-1.0.html", "RightsName": "Creative Commons Zero v1.0 Universal", "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products" } }, "AccessURL": { "Name": "HTTPS from SPDF", "URL": "https://spdf.gsfc.nasa.gov/pub/data/elfin/elfina/ephemeris", "Description": "Access to Data in CDF Format via http from SPDF" }, "Format": "CDF", "Encoding": "None", "Acknowledgement": "Please acknowledge the Principal Investigator, V. Angelopoulos, NASA, and NSF for providing the Data. Open Data for Scientific Use. Please acknowledge the Data Providers and CDAWeb when using these Data." }, { "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF", "Availability": "Online", "AccessRights": "Open", "RightsList": { "Rights": { "SchemeURI": "https://spdx.org/licenses/", "RightsIdentifierScheme": "SPDX", "RightsIdentifier": "CC0-1.0", "RightsURI": "https://spdx.org/licenses/CC0-1.0.html", "RightsName": "Creative Commons Zero v1.0 Universal", "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products" } }, "AccessURL": { "Name": "CDAWeb", "URL": "https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=ELA_L1_STATE&index=sp_phys", "ProductKey": "ELA_L1_STATE", "Description": "Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb" }, "Format": "CDF", "Encoding": "None", "Acknowledgement": "Please acknowledge the Principal Investigator, V. Angelopoulos, NASA, and NSF for providing the Data. Open Data for Scientific Use. Please acknowledge the Data Providers and CDAWeb when using these Data." } ], "ProcessingLevel": "Calibrated", "InstrumentID": "spase://SMWG/Instrument/ELFIN/A/Ephemeris", "MeasurementType": [ "Ephemeris", "InstrumentStatus" ], "TemporalDescription": { "TimeSpan": { "StartDate": "2018-09-17T00:00:00.000", "RelativeStopDate": "P8M" }, "Cadence": "PT1S" }, "ObservedRegion": [ "Earth.Magnetosphere", "Earth.Magnetosphere.Polar", "Earth.NearSurface", "Earth.NearSurface.AuroralRegion", "Earth.NearSurface.EquatorialRegion", "Earth.NearSurface.Ionosphere", "Earth.NearSurface.PolarCap" ], "Parameter": { "ela_state_time": { "Name": "State Time, UTC", "ParameterKey": "ela_state_time", "Description": "State Time, UTC, in Seconds since January 1, 2000", "Caveats": "The State Time is expressed in Unleaped Seconds", "Cadence": "PT1S", "Units": "s", "RenderingHints": { "AxisLabel": "ELA State Time", "ValueFormat": "E12.2", "ScaleType": "LinearScale" }, "ValidMin": "2010-01-01T00:00:00.000000000", "ValidMax": "2030-01-01T00:00:00.999999999", "FillValue": "9999-12-31T23:59:59.999999999", "Support": { "SupportQuantity": "Temporal" } }, "ela_pos": { "Name": "CubeSat Position Vector, Geocentric Equatorial Inertial Cartesian Coordinates", "Set": "Time Series defined by using: ELA_STATE_TIME", "ParameterKey": "ela_pos", "Description": "CubeSat Position Vector, Geocentric Equatorial Inertial, GEI, Cartesian Coordinates", "Cadence": "PT1S", "Units": "km", "UnitsConversion": "1.0e3>m", "CoordinateSystem": { "CoordinateRepresentation": "Cartesian", "CoordinateSystemName": "GEI" }, "RenderingHints": { "DisplayType": "TimeSeries", "ValueFormat": "F12.8" }, "Structure": { "Size": "3", "Element": [ { "Name": "X, GEI", "Index": "1" }, { "Name": "Y, GEI", "Index": "2" }, { "Name": "Z, GEI", "Index": "3" } ] }, "ValidMin": "-1.0e+06", "ValidMax": "1.0e+06", "FillValue": "NaN", "Support": { "Qualifier": "Vector", "SupportQuantity": "Positional" } }, "ela_vel": { "Name": "CubeSat Velocity Vector, Geocentric Equatorial Inertial Cartesian Coordinates", "Set": "Time Series defined by using: ELA_STATE_TIME", "ParameterKey": "ela_vel", "Description": "CubeSat Velocity Vector, Geocentric Equatorial Inertial, GEI, Cartesian Coordinates", "Cadence": "PT1S", "Units": "km/s", "UnitsConversion": "1.0e3>m/s", "CoordinateSystem": { "CoordinateRepresentation": "Cartesian", "CoordinateSystemName": "GEI" }, "RenderingHints": { "DisplayType": "TimeSeries", "ValueFormat": "F12.8" }, "Structure": { "Size": "3", "Element": [ { "Name": "VX, GEI", "Index": "1" }, { "Name": "VY, GEI", "Index": "2" }, { "Name": "VZ, GEI", "Index": "3" } ] }, "ValidMin": "-1000.0", "ValidMax": "1000.0", "FillValue": "NaN", "Support": { "Qualifier": "Vector", "SupportQuantity": "Positional" } }, "ela_spinras": { "Name": "CubeSat Spin Axis Attitude, Right Ascension, Geocentric Equatorial Inertial Spherical Coordinates", "Set": "Time Series defined by using: ELA_STATE_TIME", "ParameterKey": "ela_spinras", "Description": "CubeSat Spin Axis Attitude, Right Ascension, Geocentric Equatorial Inertial, GEI, Spherical Coordinates", "Cadence": "PT1S", "Units": "°", "UnitsConversion": "0.0174532925>rad", "CoordinateSystem": { "CoordinateRepresentation": "Spherical", "CoordinateSystemName": "GEI" }, "RenderingHints": { "AxisLabel": "SpinRas", "ValueFormat": "F12.8" }, "ValidMin": "0.0", "ValidMax": "360.0", "FillValue": "NaN", "Support": { "Qualifier": [ "DirectionAngle.AzimuthAngle", "Scalar" ], "SupportQuantity": "Positional" } }, "ela_spindec": { "Name": "CubeSat Spin Axis Attitude, Declination, Geocentric Equatorial Inertial Spherical Coordinates", "Set": "Time Series defined by using: ELA_STATE_TIME", "ParameterKey": "ela_spindec", "Description": "CubeSat Spin Axis Attitude, Declination, Geocentric Equatorial Inertial, GEI, Spherical Coordinates", "Cadence": "PT1S", "Units": "°", "UnitsConversion": "0.0174532925>rad", "CoordinateSystem": { "CoordinateRepresentation": "Spherical", "CoordinateSystemName": "GEI" }, "RenderingHints": { "AxisLabel": "SpinDec", "ValueFormat": "F12.8" }, "ValidMin": "0.0", "ValidMax": "180.0", "FillValue": "NaN", "Support": { "Qualifier": [ "DirectionAngle.ElevationAngle", "Scalar" ], "SupportQuantity": "Positional" } }, "ela_spinper": { "Name": "CubeSat Spin Period", "Set": "Time Series defined by using: ELA_STATE_TIME", "ParameterKey": "ela_spinper", "Description": "CubeSat Spin Period, Regularized and Boxcar Averaged", "Cadence": "PT1S", "Units": "s", "RenderingHints": { "AxisLabel": "SpinPer", "ValueFormat": "F12.8" }, "ValidMin": "0.0", "ValidMax": "30.0", "FillValue": "NaN", "Support": { "Qualifier": "Scalar", "SupportQuantity": "Other" } }, "ela_man": { "Name": "CubeSat Maneuver Status Code", "Set": "Time Series defined by using: ELA_STATE_TIME", "ParameterKey": "ela_man", "Description": "CubeSat Maneuver Status Code", "Cadence": "PT1S", "RenderingHints": { "AxisLabel": "ManCode", "ValueFormat": "I8", "ScaleType": "LinearScale" }, "ValidMin": "0", "ValidMax": "4294967295", "FillValue": "4294967295", "Support": { "Qualifier": "Scalar", "SupportQuantity": "Other" } }, "ela_spinphase": { "Name": "CubeSat Spin Phase", "Set": "Time Series defined by using: ELA_STATE_TIME", "ParameterKey": "ela_spinphase", "Description": "CubeSat Spin Phase", "Cadence": "PT1S", "Units": "°", "UnitsConversion": "0.0174532925>rad", "CoordinateSystem": { "CoordinateRepresentation": "Spherical", "CoordinateSystemName": "GEI" }, "RenderingHints": { "AxisLabel": "SpinPhase", "ValueFormat": "F12.8" }, "ValidMin": "0.0", "ValidMax": "360.0", "FillValue": "NaN", "Support": { "Qualifier": [ "DirectionAngle.AzimuthAngle", "Scalar" ], "SupportQuantity": "Positional" } } } } } } }