{ "id": "THB_L1_STATE", "url": "http://hpde.io/VMO/NumericalData/THEMIS/B/Ephemeris/PT01M", "data-file": "./data/spase_hpde_io/info/THB_L1_STATE.json", "data": { "Spase": { "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance", "xmlns": "http://www.spase-group.org/data/schema", "xsi:schemaLocation": "http://www.spase-group.org/data/schema http://www.spase-group.org/data/schema/spase-2_2_2.xsd", "Version": "2.2.2", "NumericalData": { "ResourceID": "spase://VMO/NumericalData/THEMIS/B/Ephemeris/PT01M", "ResourceHeader": { "ResourceName": "THEMIS-B Level 1 Probe State Data", "ReleaseDate": "2014-07-31T17:07:22Z", "Description": "The L1 STATE files contain the following data, sampled at one-minute intervals:\n\n * probe position and velocity in GEI, GSE, and GSM coordinates;\n * flags to indicate regions of interest and maneuver status;\n * RA and declination of spin axis;\n * spin period and spin phase;\n * spin model parameters for high-precision interpolation of spin phase between one-minute data points.\n\n Version number indicates data source as follows:\n\n * V00: predicted ephemeris and attitude, no spin period or spin phase;\n * V01: predicted ephemeris and attitude, spin period and spin phase derived from probe telemetry;\n * V02: predicted attitude, definitive ephemeris from magnetometer and Doppler tracking data;\n * V03: corrected attitude and spin phase derived from fully calibrated magnetometer data. (added science attitude determination using perigee data post-processing). \n\n Produced by Mission Ops, Science Ops and Science Team.\n ", "Acknowledgement": "NASA Contract NAS5-02099", "Contact": { "PersonID": "spase://SMWG/Person/Vassilis.Angelopoulos", "Role": "PrincipalInvestigator" }, "InformationURL": [ { "Name": "THEMIS Data Overview", "URL": "http://themis.ssl.berkeley.edu/overview_data.shtml", "Description": "Overview of THEMIS data, descriptions, and data policy." }, { "Name": "THEMIS Data Policy and Credits", "URL": "http://themis.ssl.berkeley.edu/roadrules.shtml", "Description": "Details on THEMIS data policy and giving proper credits in publications." }, { "Name": "THEMIS Ephemeris Format Definition", "URL": "ftp://apollo.ssl.berkeley.edu/pub/THEMIS/3 Ground Systems/3.2 Science Operations/Science Operations Documents/thm_ogs_431m_ephemeris_format_definition.pdf", "Description": "Ephemeris file format and quantity details including RoI descriptions." } ] }, "AccessInformation": [ { "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb", "Availability": "Online", "AccessRights": "Open", "AccessURL": { "Name": "FTP access to files at SPDF", "URL": "ftp://spdf.gsfc.nasa.gov/pub/data/themis/thb/l1/state", "Description": "NASA/GSFC CDAWeb ftp access to the data." }, "Format": "CDF", "Encoding": "None" }, { "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb", "Availability": "Online", "AccessRights": "Open", "AccessURL": { "Name": "HTTP access to files at SPDF", "URL": "http://spdf.gsfc.nasa.gov/pub/data/themis/thb/l1/state", "Description": "In CDF via HTTP from SPDF" }, "Format": "CDF", "Encoding": "None" }, { "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb", "Availability": "Online", "AccessRights": "Open", "AccessURL": { "Name": "CDAWeb", "URL": "http://cdaweb.gsfc.nasa.gov", "ProductKey": "THB_L1_STATE", "Description": "Access to ASCII, CDF, and plots via NASA/GSFC CDAWeb" }, "Format": "CDF", "Encoding": "None" }, { "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb", "Availability": "Online", "AccessRights": "Open", "AccessURL": { "Name": "SSCWeb", "URL": "http://sscweb.gsfc.nasa.gov/cgi-bin/Locator.cgi", "ProductKey": "themisb" }, "Format": "CDF", "Encoding": "None" }, { "RepositoryID": "spase://SMWG/Repository/UCB/THEMIS", "Availability": "Online", "AccessRights": "Open", "AccessURL": { "Name": "THEMIS L1 state data at University of California, Berkeley", "URL": "http://themis.ssl.berkeley.edu/data/themis/thb/l1/state", "Description": "CDF data files for download, organized by date." }, "Format": "CDF", "Encoding": "None" } ], "ProcessingLevel": "Uncalibrated", "ProviderProcessingLevel": "Level 1", "ProviderVersion": "v3", "InstrumentID": "spase://SMWG/Instrument/THEMIS/B/Ephemeris", "MeasurementType": "Ephemeris", "TemporalDescription": { "TimeSpan": { "StartDate": "2007-02-17T23:35:58", "RelativeStopDate": "-P7D" }, "Cadence": "PT01M" }, "ObservedRegion": [ "Heliosphere.NearEarth", "Earth.Magnetosphere.Magnetotail", "Earth.Magnetosphere.Main", "Earth.Magnetosheath" ], "Caveats": "Typical cadence is 1 min, occasionally 3s.", "Parameter": { "thb_pos": { "Name": "THEMIS-B Position (GEI)", "ParameterKey": "thb_pos", "Description": "THEMIS-B position vector (km) in GEI coordinates.", "Units": "km", "UnitsConversion": "1e3>m", "CoordinateSystem": { "CoordinateRepresentation": "Cartesian", "CoordinateSystemName": "GEI" }, "Structure": { "Size": "3", "Element": [ { "Name": "X GEI", "Qualifier": "Component.I", "Index": "1" }, { "Name": "Y GEI", "Qualifier": "Component.J", "Index": "2" }, { "Name": "Z GEI", "Qualifier": "Component.K", "Index": "3" } ] }, "ValidMin": "-1000000.0", "ValidMax": "1000000.0", "FillValue": "NaN", "Support": { "Qualifier": "Vector", "SupportQuantity": "Positional" } }, "thb_vel": { "Name": "THEMIS-B Velocity (GEI)", "ParameterKey": "thb_vel", "Description": "THEMIS-B velocity vector (km/s) in GEI coordinates.", "Units": "km/s", "UnitsConversion": "1e3>m/s", "CoordinateSystem": { "CoordinateRepresentation": "Cartesian", "CoordinateSystemName": "GEI" }, "Structure": { "Size": "3", "Element": [ { "Name": "Vx GEI", "Qualifier": "Component.I", "Index": "1" }, { "Name": "Vy GEI", "Qualifier": "Component.J", "Index": "2" }, { "Name": "Vz GEI", "Qualifier": "Component.K", "Index": "3" } ] }, "ValidMin": "-1000.0", "ValidMax": "1000.0", "FillValue": "NaN", "Support": { "Qualifier": "Vector", "SupportQuantity": "Velocity" } }, "thb_man": { "Name": "THEMIS-B Maneuver Flag", "ParameterKey": "thb_man", "Description": "THEMIS-B maneuver status code (XYYZZZ). Values indicate if/what maneuver is being performed. Spacecraft data will be unreliable during maneuvers.\n\n * Unpowered flight (Coast):\n - X=0, Y=00, Z=000 \n * Sequence Code X:\n - 0= No Segmentation\n - 1= Segmented Maneuver\n * Type Code YY:\n - 0= No Maneuver\n - 1= Axial-thrust Maneuver\n - 2= Side-thrust Maneuver\n - 3= Beta-thrust Maneuver\n - 4= Attitude Precession\n - 5= Spin-Rate Change\n * Sequence Number ZZZ:\n - 001-999= Maneuver Sequence Number\n ", "ValidMin": "0", "ValidMax": "4294967295", "FillValue": "4294967295", "Support": { "SupportQuantity": "Other" } }, "thb_roi": { "Name": "THEMIS-B RoI", "ParameterKey": "thb_roi", "Description": "Region of interest. Different bits of this parameter give a general indication of the region thbt the spacecraft is in. The first 18 bits are significant. An active bit indicates the spacecraft is in a given region. Multiple bits may be set simultaneously. The value of the bit is in parentheses in the following table.\n\n +---------------------------------------------------+\n | Bit 1(1) | Earth Shadow |\n | Bit 2(2) | Lunar Shadow |\n | Bit 3(4) | Atmospheric absorbtion zone |\n | Bit 4(8) | South Atlantic Anomaly |\n | Bit 5(16) | Northern Auroral Zone |\n | Bit 6(32) | Southern Auroral Zone |\n | Bit 7(64) | Perigee Passage |\n | Bit 8(128) | Inner & Outer Radiation Belts |\n | Bit 9(256) | Deep Plasma Sphere |\n | Bit 10(512) | Foreshock Solar Wind |\n | Bit 11(1024) | Solar Wind Beam |\n | Bit 12(2048) | High Magnetic Field |\n | Bit 13(4096) | Average Plasma Sheet |\n | Bit 14(8192) | Bowshock Crossing |\n | Bit 15(16384) | Magnetopause Crossing |\n | Bit 16(32768) | Ground Based Observatories |\n | Bit 17(65536) | 2-Day Conjunctions |\n | Bit 18(131072)| 4-Day Conjunctions |\n +---------------------------------------------------+\n ", "ValidMin": "0", "ValidMax": "4294967295", "FillValue": "4294967295", "Support": { "SupportQuantity": "Other" } }, "thb_spinras": { "Name": "THEMIS-B Spin Right Ascension", "ParameterKey": "thb_spinras", "Description": "THEMIS-B spin axis right ascension in GEI coordinates.", "Caveats": "Measured from GEI x-axis towards GEI y-axis.", "Units": "deg", "CoordinateSystem": { "CoordinateRepresentation": "Spherical", "CoordinateSystemName": "GEI" }, "ValidMin": "0.0", "ValidMax": "360.0", "FillValue": "NaN", "Support": { "Qualifier": "DirectionAngle.AzimuthAngle", "SupportQuantity": "Positional" } }, "thb_spindec": { "Name": "THEMIS-B Spin Declination", "ParameterKey": "thb_spindec", "Description": "THEMIS-B spin axis declination in GEI coordinates.", "Caveats": "Measured from GEI x-y axis towards GEI z-axis.", "Units": "deg", "CoordinateSystem": { "CoordinateRepresentation": "Spherical", "CoordinateSystemName": "GEI" }, "ValidMin": "-90.0", "ValidMax": "90.0", "FillValue": "NaN", "Support": { "Qualifier": "DirectionAngle.ElevationAngle", "SupportQuantity": "Positional" } }, "thb_spinalpha": { "Name": "THEMIS-B Spin Alpha", "ParameterKey": "thb_spinalpha", "Description": "THEMIS-B spin axis azimuth, Euler alpha, in Probe Geometric (SPG) coordinates", "Units": "deg", "CoordinateSystem": { "CoordinateRepresentation": "Spherical", "CoordinateSystemName": "SC" }, "ValidMin": "0.0", "ValidMax": "360.0", "FillValue": "NaN", "Support": { "Qualifier": "DirectionAngle.AzimuthAngle", "SupportQuantity": "Positional" } }, "thb_spinbeta": { "Name": "THEMIS-B Spin Beta", "ParameterKey": "thb_spinbeta", "Description": "THEMIS-B spin axis colatitude, Euler beta, in Probe Geometric (SPG) coordinates", "Units": "deg", "CoordinateSystem": { "CoordinateRepresentation": "Spherical", "CoordinateSystemName": "SC" }, "ValidMin": "0.0", "ValidMax": "180.0", "FillValue": "NaN", "Support": { "Qualifier": "DirectionAngle.PolarAngle", "SupportQuantity": "Positional" } }, "thb_spinper": { "Name": "THEMIS-B Spin Period", "ParameterKey": "thb_spinper", "Description": "THEMIS-B spin period, regularized and boxcar averaged.", "Units": "s", "ValidMin": "0.0", "ValidMax": "30.0", "FillValue": "NaN", "Support": { "SupportQuantity": "Temporal" } }, "thb_spinphase": { "Name": "THEMIS-B Spin PhaseAngle", "ParameterKey": "thb_spinphase", "Description": "THEMIS-B angle rotated since the sun sensor registered the sun pulse, regularized and boxcar averaged.", "Units": "deg", "ValidMin": "0.0", "ValidMax": "360.0", "FillValue": "NaN", "Support": { "Qualifier": "PhaseAngle", "SupportQuantity": "Positional" } }, "thb_state_time": { "Name": "THEMIS-B Time", "ParameterKey": "thb_state_time", "Description": "Time, UTC, in seconds since 01-Jan-1970 00:00:00.", "Caveats": "Not including leap seconds.", "Units": "s", "ValidMin": "0.0", "ValidMax": "5.0E9", "FillValue": "NaN", "Support": { "SupportQuantity": "Temporal" } }, "thb_spin_correction_time": { "Name": "Spin Correction Time", "ParameterKey": "thb_spin_correction_time", "Description": "Spin correction time, UTC, in seconds since 01-Jan-1970 00:00:00", "Caveats": "Unleaped seconds", "Units": "s", "ValidMin": "0.0", "ValidMax": "5.0E9", "FillValue": "NaN", "Support": { "SupportQuantity": "Temporal" } }, "thb_spin_spinper": { "Name": "THEMIS-B Initial Spin Period", "ParameterKey": "thb_spin_spinper", "Description": "Initial spin period for segment.", "Units": "s", "ValidMin": "0.0", "ValidMax": "30.0", "FillValue": "NaN", "Support": { "SupportQuantity": "Temporal" } }, "thb_spin_time": { "Name": "THEMIS-B Spin Time", "ParameterKey": "thb_spin_time", "Description": "Spin time, UTC, in seconds since 01-Jan-1970 00:00:00.", "Caveats": "Not including leap seconds.", "Units": "s", "ValidMin": "0.0", "ValidMax": "5.0E9", "FillValue": "NaN", "Support": { "SupportQuantity": "Temporal" } }, "thb_spin_tend": { "Name": "THEMIS-B Spin End Time", "ParameterKey": "thb_spin_tend", "Description": "Segment end time, UTC, in seconds since 01-Jan-1970 00:00:00", "Caveats": "Not including leap seconds", "Units": "s", "ValidMin": "0.0", "ValidMax": "5.0E9", "FillValue": "NaN", "Support": { "SupportQuantity": "Temporal" } }, "thb_spin_c": { "Name": "THEMIS-B Drift Term ('c')", "ParameterKey": "thb_spin_c", "Description": "Drift term for spin rate", "Caveats": "Applies to angular velocity (deg/sec), not spin period.", "Units": "deg/s^2", "ValidMin": "-30.0", "ValidMax": "30.0", "FillValue": "NaN", "Support": { "SupportQuantity": "Other" } }, "thb_spin_correction": { "Name": "THEMIS-B Spin Correction", "ParameterKey": "thb_spin_correction", "Description": "Spin phase correction from definitive position and field model calculated at 1 minute intervals", "Units": "deg", "ValidMin": "-180.0", "ValidMax": "180.0", "FillValue": "NaN", "Support": { "Qualifier": "DirectionAngle", "SupportQuantity": "Other" } }, "thb_spinras_correction": { "Name": "Spin Axis Right Ascension Correction", "ParameterKey": "thb_spinras_correction", "Description": "Spin axis right ascension correction from definitive position and field model", "Units": "deg", "ValidMin": "-180", "ValidMax": "180", "FillValue": "NaN", "Support": { "SupportQuantity": "Other" } }, "thb_spindec_correction": { "Name": "Spin Axis Declination Correction", "ParameterKey": "thb_spindec_correction", "Description": "Spin axis declination correction from definitive position and field model", "Units": "deg", "ValidMin": "-180", "ValidMax": "180", "FillValue": "NaN", "Support": { "SupportQuantity": "Other" } }, "thb_spin_phaserr": { "Name": "THEMIS-B Phase Error", "ParameterKey": "thb_spin_phaserr", "Description": "Maximum absolute phase error between model and non-outlier sun crossing time.", "Caveats": "Errors due to recognized BAU timing errors do not contribute to this quantity.", "Units": "s", "ValidMin": "0.0", "ValidMax": "30.0", "FillValue": "NaN", "Support": { "Qualifier": "Uncertainty", "SupportQuantity": "Temporal" } }, "thb_spin_nspins": { "Name": "THEMIS-B Spin Number", "ParameterKey": "thb_spin_nspins", "Description": "Number of spins contained in this segment.", "ValidMin": "0", "ValidMax": "65535", "FillValue": "65535", "Support": { "SupportQuantity": "Other" } }, "thb_spin_npts": { "Name": "THEMIS-B Sample Number", "ParameterKey": "thb_spin_npts", "Description": "Number of samples (points) contained in this segment.", "ValidMin": "0", "ValidMax": "65535", "FillValue": "65535", "Support": { "SupportQuantity": "Other" } }, "thb_spin_maxgap": { "Name": "THEMIS-B Pulse Gap", "ParameterKey": "thb_spin_maxgap", "Description": "Duration, in seconds, of longest gap between sun pulses in this segment. Long gaps (60 sec or more) will generally indicate shadow periods.", "Units": "s", "ValidMin": "0.0", "ValidMax": "86400.0", "FillValue": "NaN", "Support": { "SupportQuantity": "Temporal" } }, "thb_pos_gse": { "Name": "THEMIS-B Position (GSE)", "ParameterKey": "thb_pos_gse", "Description": "Spacecraft position vector (km) in GSE coordinates.", "Cadence": "PT01M", "Units": "km", "UnitsConversion": "1e3>m", "CoordinateSystem": { "CoordinateRepresentation": "Cartesian", "CoordinateSystemName": "GSE" }, "Structure": { "Size": "3", "Element": [ { "Name": "X GSE", "Qualifier": "Component.I", "Index": "1" }, { "Name": "Y GSE", "Qualifier": "Component.J", "Index": "2" }, { "Name": "Z GSE", "Qualifier": "Component.K", "Index": "3" } ] }, "ValidMin": "-1000000.0", "ValidMax": "1000000.0", "FillValue": "NaN", "Support": { "Qualifier": "Vector", "SupportQuantity": "Positional" } }, "thb_pos_gsm": { "Name": "THEMIS-B Position (GSM)", "ParameterKey": "thb_pos_gsm", "Description": "Spacecraft position vector (km) in GSM coordinates.", "Cadence": "PT01M", "Units": "km", "UnitsConversion": "1e3>m", "CoordinateSystem": { "CoordinateRepresentation": "Cartesian", "CoordinateSystemName": "GSM" }, "Structure": { "Size": "3", "Element": [ { "Name": "X GSM", "Qualifier": "Component.I", "Index": "1" }, { "Name": "Y GSM", "Qualifier": "Component.J", "Index": "2" }, { "Name": "Z GSM", "Qualifier": "Component.K", "Index": "3" } ] }, "ValidMin": "-1000000.0", "ValidMax": "1000000.0", "FillValue": "NaN", "Support": { "Qualifier": "Vector", "SupportQuantity": "Positional" } }, "thb_vel_gse": { "Name": "THEMIS-B Velocity (GSE)", "ParameterKey": "thb_vel_gse", "Description": "Spacecraft velocity (km/s) in GSE coordinates.", "Cadence": "PT01M", "Units": "km/s", "UnitsConversion": "1e3>m/s", "CoordinateSystem": { "CoordinateRepresentation": "Cartesian", "CoordinateSystemName": "GSE" }, "Structure": { "Size": "3", "Element": [ { "Name": "Vx GSE", "Qualifier": "Component.I", "Index": "1" }, { "Name": "Vy GSE", "Qualifier": "Component.J", "Index": "2" }, { "Name": "Vz GSE", "Qualifier": "Component.K", "Index": "3" } ] }, "ValidMin": "-1000.0", "ValidMax": "1000.0", "FillValue": "NaN", "Support": { "Qualifier": "Vector", "SupportQuantity": "Velocity" } }, "thb_vel_gsm": { "Name": "THEMIS-B Velocity (GSM)", "ParameterKey": "thb_vel_gsm", "Description": "Spacecraft velocity (km/s) in GSM coordinates.", "Cadence": "PT01M", "Units": "km/s", "UnitsConversion": "1e3>m/s", "CoordinateSystem": { "CoordinateRepresentation": "Cartesian", "CoordinateSystemName": "GSM" }, "Structure": { "Size": "3", "Element": [ { "Name": "Vx GSM", "Qualifier": "Component.I", "Index": "1" }, { "Name": "Vy GSM", "Qualifier": "Component.J", "Index": "2" }, { "Name": "Vz GSM", "Qualifier": "Component.K", "Index": "3" } ] }, "ValidMin": "-1000.0", "ValidMax": "1000.0", "FillValue": "NaN", "Support": { "Qualifier": "Vector", "SupportQuantity": "Velocity" } } } } } } }