{ "id": "ELB_l1_STATE_DEFN", "url": "http://hpde.io/NASA/NumericalData/ELFIN/B/Ephemeris/DEFN/PT1S", "data-file": "./data/spase_hpde_io/info/ELB_l1_STATE_DEFN.json", "data": { "Spase": { "xmlns": "http://www.spase-group.org/data/schema", "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance", "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/B/Ephemeris/DEFN/PT1S", "NamingAuthority": "NASA", "ResourceType": "Instrument", "ResourceHeader": { "ResourceName": "ELFIN-B Definitive Ephemeris Data", "ReleaseDate": "2025-12-04T13:29:11Z", "RevisionHistory": { "RevisionEvent": [ { "ReleaseDate": "2024-06-28T12:34:56.789", "Note": "Only known prior ReleaseDate of the metadata" }, { "ReleaseDate": "2025-03-03T13:45:36Z", "Note": "Modified Funding AwardNumber. ZCB" }, { "ReleaseDate": "2025-04-21T13:45:36Z", "Note": "Fixed Instrument link. JMW" }, { "ReleaseDate": "2025-10-02T15:11:50Z", "Note": "Updated PublishedBy name to match ROR Registry. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. ZCB" }, { "ReleaseDate": "2025-12-04T13:29:11Z", "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. These ELFIN-B state files contain definitive position, attitude and orbit events.", "Acknowledgement": "Please acknowledge the Principal Investigator, V. Angelopoulos, NASA, and NSF for providing the Data. Open Data for Scientific Use.", "PublicationInfo": { "Authors": "Angelopoulos, V., Russell, C., Wu, J., Wilkins, C., Caron, R., Tsai, E., King, J., and Norris, A.", "PublicationDate": "2024-06-19T12:34:56.789Z", "PublishedBy": "Space Physics Data Facility" }, "Funding": [ { "Agency": "NASA", "Project": "ELFIN funding", "AwardNumber": "NNX14AN68G" }, { "Agency": "NSF", "Project": "ELFIN funding", "AwardNumber": "AGS-1242918" }, { "Agency": "NSF", "Project": "ELFIN funding", "AwardNumber": "AGS-2019950" } ], "Contact": [ { "PersonID": "spase://SMWG/Person/Vassilis.Angelopoulos", "Role": "PrincipalInvestigator" }, { "PersonID": "spase://SMWG/Person/Cindy.Russell", "Role": "Scientist" }, { "PersonID": "spase://SMWG/Person/Jiashu.Wu", "Role": "Scientist" }, { "PersonID": "spase://SMWG/Person/Colin.Wilkins", "Role": "TechnicalContact" }, { "PersonID": "spase://SMWG/Person/Ryan.Caron", "Role": "TechnicalContact" }, { "PersonID": "spase://SMWG/Person/Ethan.Tsai", "Role": "ProjectManager" }, { "PersonID": "spase://SMWG/Person/James.King", "Role": "DataProducer" }, { "PersonID": "spase://SMWG/Person/Austin.Norris", "Role": "DataProducer" }, { "PersonID": "spase://SMWG/Person/Robert.M.Candey", "Role": "MetadataContact" }, { "PersonID": "spase://SMWG/Person/Lee.Frost.Bargatze", "Role": "MetadataContact" }, { "PersonID": "spase://SMWG/Person/James.M.Weygand", "Role": "MetadataContact" } ], "InformationURL": { "Name": "Electron Losses and Fields INvestigation-B twin satellite mission", "URL": "https://elfin.igpp.ucla.edu", "Description": "Electron Losses and Fields INvestigation-B twin satellite mission University of California, Los Angeles homepage.", "Language": "en" } }, "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": "HTTPS from SPDF", "URL": "https://spdf.gsfc.nasa.gov/pub/data/elfin/elfinb/ephemeris/defn/", "Description": "Access to Data in CDF Format via https from SPDF" }, "Format": "CDF", "Encoding": "None", "Acknowledgement": "Please acknowledge the Principal Investigator, V. Angelopoulos, NASA, and NSF. 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=ELB_l1_STATE_DEFN&index=sp_phys", "ProductKey": "ELB_l1_STATE_DEFN", "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. Please acknowledge the Data Providers and CDAWeb when using these Data." } ], "ProcessingLevel": "Calibrated", "InstrumentID": "spase://NASA/Instrument/ELFIN/B/Ephemeris", "MeasurementType": "InstrumentStatus", "TemporalDescription": { "TimeSpan": { "StartDate": "2018-09-16T00:00:00.000", "StopDate": "2022-09-17T23:59:59.999" } }, "ObservedRegion": [ "Earth.Magnetosphere", "Earth.Magnetosphere.Polar", "Earth.NearSurface", "Earth.NearSurface.AuroralRegion", "Earth.NearSurface.Atmosphere", "Earth.NearSurface.Ionosphere", "Earth.NearSurface.PolarCap" ], "Parameter": { "elb_state_time": { "Name": "Time since Jan 1, 2000", "ParameterKey": "elb_state_time", "Description": "Coordinated universal time (UTC) in seconds.", "Caveats": "Unleaped seconds", "Cadence": "PT1S", "Units": "s", "RenderingHints": { "AxisLabel": "elb_state_time", "ValueFormat": "E12.2", "ScaleType": "LinearScale" }, "ValidMin": "2010-01-01T00:00:00.000000000", "ValidMax": "2029-12-31T23:59:58.999000000", "FillValue": "9999-12-31T23:59:59.999999999", "Support": { "SupportQuantity": "Temporal" } }, "elb_pos_gei": { "Name": "Position XYZ", "Set": "Time series defined by using: elb_state_time", "ParameterKey": "elb_pos_gei", "Description": "Spacecraft Position XYZ in GEI-J2000", "Cadence": "PT1S", "Units": "km", "CoordinateSystem": { "CoordinateRepresentation": "Cartesian", "CoordinateSystemName": "GEI" }, "Support": { "Qualifier": "Vector", "SupportQuantity": "Positional" } }, "elb_vel_gei": { "Name": "Velocity", "Set": "Time series defined by using: elb_state_time", "ParameterKey": "elb_vel_gei", "Description": "Spacecraft Velocity Vxyz", "Cadence": "PT1S", "Units": "km/s", "CoordinateSystem": { "CoordinateRepresentation": "Cartesian", "CoordinateSystemName": "GEI" }, "Support": { "Qualifier": "Vector", "SupportQuantity": "Velocity" } }, "elb_att_time": { "Name": "Time since Jan 1, 2000", "ParameterKey": "elb_att_time", "Description": "Attitude time, UTC, in seconds.", "Caveats": "Unleaped seconds", "Cadence": "PT60S", "Units": "s", "RenderingHints": { "AxisLabel": "elb_att_time", "ValueFormat": "E12.2", "ScaleType": "LinearScale" }, "ValidMin": "2010-01-01T00:00:00.000000000", "ValidMax": "2029-12-31T23:59:58.999000000", "FillValue": "9999-12-31T23:59:59.999999999", "Support": { "SupportQuantity": "Temporal" } }, "elb_att_gei": { "Name": "Attitude XYZ", "Set": "Time series defined by using: elb_att_time", "ParameterKey": "elb_att_gei", "Description": "Spacecraft Attitude XYZ", "Cadence": "PT60S", "Units": "km", "CoordinateSystem": { "CoordinateRepresentation": "Cartesian", "CoordinateSystemName": "GEI" }, "Support": { "Qualifier": "Vector", "SupportQuantity": "Positional" } }, "elb_att_solution_date": { "Name": "Time since Jan 1, 2000", "Set": "Time series defined by using: elb_att_time", "ParameterKey": "elb_att_solution_date", "Description": "Date of attitude solution, UTC, in seconds", "Cadence": "PT60S", "Units": "s", "RenderingHints": { "AxisLabel": "att_solution_date", "ValueFormat": "E12.2" }, "ValidMin": "0.0", "ValidMax": "1.0", "FillValue": "0.0", "Support": { "SupportQuantity": "Temporal" } }, "elb_att_uncertainty": { "Name": "Uncertainty of Attitude", "Set": "Time series defined by using: elb_att_time", "ParameterKey": "elb_att_uncertainty", "Description": "Uncertainty of the attitude.", "Cadence": "PT60S", "Units": "°", "RenderingHints": { "AxisLabel": "att_uncertainty", "ValueFormat": "F12.8" }, "ValidMin": "0.0", "ValidMax": "360.0", "FillValue": "NaN", "Support": { "SupportQuantity": "Housekeeping" } }, "elb_att_flag": { "Name": "Attitude Flag", "Set": "Time series defined by using: elb_att_time", "ParameterKey": "elb_att_flag", "Description": "Flag indicating if the attitude is interpolated=0, modeled=1.", "Cadence": "PT60S", "RenderingHints": { "AxisLabel": "attitude flag", "ValueFormat": "i1" }, "ValidMin": "0", "ValidMax": "1", "FillValue": "-1", "Support": { "SupportQuantity": "Housekeeping" } }, "elb_att_spinper": { "Name": "Calculated Spin Period", "Set": "Time series defined by using: elb_att_time", "ParameterKey": "elb_att_spinper", "Description": "Calculated spin period.", "Cadence": "PT60S", "Units": "sec", "RenderingHints": { "AxisLabel": "spinper", "ValueFormat": "F12.8" }, "ValidMin": "0", "ValidMax": "40", "FillValue": "-128", "Support": { "SupportQuantity": "Housekeeping" } }, "elb_spin_orbnorm_angle": { "Name": "Spin Vector and Orbit Normal Angle", "Set": "Time series defined by using: elb_att_time", "ParameterKey": "elb_spin_orbnorm_angle", "Description": "Angle between spin vector and orbit normal.", "Cadence": "PT60S", "Units": "°", "RenderingHints": { "AxisLabel": "spin_orbnorm_angle", "ValueFormat": "F12.8" }, "ValidMin": "0.0", "ValidMax": "360.0", "FillValue": "NaN", "Support": { "SupportQuantity": "Orientation" } }, "elb_spin_sun_angle": { "Name": "Angle between Spin Vector and Sun", "Set": "Time series defined by using: elb_att_time", "ParameterKey": "elb_spin_sun_angle", "Description": "Angle between spin vector and sun.", "Cadence": "PT60S", "Units": "°", "RenderingHints": { "AxisLabel": "spin_sun_angle", "ValueFormat": "F12.8" }, "ValidMin": "0.0", "ValidMax": "360.0", "FillValue": "NaN", "Support": { "SupportQuantity": "Orientation" } }, "elb_sun": { "Name": "ELFIN B Sun Flag", "Set": "Time series defined by using: elb_state_time", "ParameterKey": "elb_sun", "Description": "ELFIN B sun flag. Spacecraft in sun = 1.", "Cadence": "PT1S", "RenderingHints": { "AxisLabel": "spacecraft in sun", "ValueFormat": "I1" }, "ValidMin": "0.0", "ValidMax": "1.0", "FillValue": "NaN", "Support": { "SupportQuantity": "Housekeeping" } } } } } } }