2.7.1 https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions spase://NASA/NumericalData/IMAGE/Orbit/Definitive/PT120S NASA NumericalData IMAGE Definitive Orbit Data https://doi.org/10.48322/xp4c-3j37 2026-07-21T12:05:20Z 2021-04-27T15:38:11Z Only known prior ReleaseDate of the metadata 2025-05-14T15:38:11Z Added ObservedRegion. JMW 2025-12-04T13:29:32Z Added MetadataRightsList and RightsList(s). Added ResourceType and NamingAuthority. Updated to 2.7.1. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. ZCB 2026-02-06T12:16:45Z Added DOI and publication info 2026-06-26T13:17:50Z Add 'Z' to RevisionEvent:ReleaseDate(s), TemporalDescription:TimeSpan:StartDate, TemporalDescription:TimeSpan:StopDate. ZCB 2026-07-21T12:05:20Z Added HelioData InformationURL. JWL IMAGE Definitive Orbit Data, GSE and GSM Coordinates Burch, James, L. 2024-04-25T20:13:05Z Space Physics Data Facility spase://SMWG/Person/James.L.Burch PrincipalInvestigator HelioData https://helio.data.nasa.gov/dataset/IMAGE_Orbit_Definitive_PT120S The HelioData dataset page provides an overview of the dataset with access links, associated variables, and more. spase://VSPO/NumericalData/P_IMAGE_HDR_DEFORBIT_120S spase://VSPO/NumericalData/IMAGE/Orbit/Definitive/PT120S spase://SMWG/Repository/NASA/GSFC/SPDF Online Open https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products FTPS from SPDF (not with most browsers) ftps://spdf.gsfc.nasa.gov/pub/data/image/orbit/def_or/ HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/image/orbit/def_or/ In CDF via HTTP from CDAWeb CDAWeb https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=IM_OR_DEF&index=sp_phys IM_OR_DEF SSCWeb https://sscweb.gsfc.nasa.gov/cgi-bin/Locator.cgi image CDF https://cdaweb.gsfc.nasa.gov/pub/data/image/orbit/def_or/$Y im_or_def_$Y$m$d_$v.cdf spase://SMWG/Repository/NASA/GSFC/SPDF Online Open CDAWeb Programmatic Data Access https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/IM_OR_DEF/clientLibraryExample/ IM_OR_DEF Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS. Binary spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SSCWeb Programmatic Data Access https://sscweb.gsfc.nasa.gov/WS/sscr/2/observatories/image/clientLibraryExample/ image Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS. Binary spase://SMWG/Repository/NASA/GSFC/SPDF Online Open 4D Orbit Viewer https://sscweb.gsfc.nasa.gov/4dorbit/?sc=image image 4D viewer for this data. Note: this AccessInformation element was added by HDPWS. HTML spase://SMWG/Repository/NASA/GSFC/SPDF Online Open https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products CDAWeb HAPI Server https://cdaweb.gsfc.nasa.gov/hapi IM_OR_DEF Web Service to this product using the HAPI interface. CSV spase://SMWG/Instrument/IMAGE/Ephemeris Ephemeris 2000-03-27T00:00:00Z 2004-06-21T00:00:00Z Data are current to within about a week. PT120S Earth.Magnetosphere Earth.NearSurface.Plasmasphere Earth.NearSurface.AuroralRegion Earth.NearSurface.PolarCap Epoch Time Epoch Number of milliseconds since the CDF epoch ms 1e-3>s 01-Jan-1956 00:00:00.000 01-Jan-2083 00:00:00.000 -1.0E31 Temporal GEI position XYZ_GEI Spacecraft position in GEI km 1e3>m Cartesian GEI 3 x Component.I 1 -1.0E31 y Component.J 2 -1.0E31 z Component.K 3 -1.0E31 Positional GEI latitude GEI_LAT Latitude of the spacecraft position in GEI Deg Spherical GEI -90.0 90.0 -1.0E31 DirectionAngle.ElevationAngle Positional GEI longitude GEI_LON Longitude of the spacecraft position in GEI Deg Spherical GEI -180.0 360.0 -1.0E31 DirectionAngle.AzimuthAngle Positional J2000 position XYZ_J2000 Spacecraft position in J2000 km 1e3>m Cartesian J2000 3 x Component.I 1 -1.0E31 y Component.J 2 -1.0E31 z Component.K 3 -1.0E31 Positional J2000 latitude J2000_LAT Latitude of the spacecraft position in J2000 Deg Spherical J2000 -90.0 90.0 -1.0E31 DirectionAngle.ElevationAngle Positional J2000 longitude J2000_LON Longitude of the spacecraft position in J2000 Deg Spherical J2000 -180.0 360.0 -1.0E31 DirectionAngle.AzimuthAngle Positional GEO position XYZ_GEO Spacecraft position in GEO km 1e3>m Cartesian GEO 3 x Component.I 1 -1.0E31 y Component.J 2 -1.0E31 z Component.K 3 -1.0E31 Positional GEO latitude GEO_LAT Latitude of the spacecraft position in GEO Deg Spherical GEO -90.0 90.0 -1.0E31 DirectionAngle.ElevationAngle Positional GEO longitude GEO_LON Longitude of the spacecraft position in GEO Deg Spherical GEO -180.0 360.0 -1.0E31 DirectionAngle.AzimuthAngle Positional GEO local time GEO_LCT_T hours 0.0 24.0 -1.0E31 DirectionAngle.AzimuthAngle Positional GM position XYZ_GM Spacecraft position in GM km 1e3>m Cartesian MAG 3 x Component.I 1 -1.0E31 y Component.J 2 -1.0E31 z Component.K 3 -1.0E31 Positional GM latitude GM_LAT Latitude of the spacecraft position in GM Deg Spherical MAG -90.0 90.0 -1.0E31 DirectionAngle.ElevationAngle Positional GM longitude GM_LON Longitude of the spacecraft position in GM Deg Spherical MAG -180.0 360.0 -1.0E31 DirectionAngle.AzimuthAngle Positional GM local time GM_LCT_T hours 0.0 24.0 -1.0E31 DirectionAngle.AzimuthAngle Positional GSE position XYZ_GSE Spacecraft position in GSE km 1e3>m Cartesian GSE 3 x Component.I 1 -1.0E31 y Component.J 2 -1.0E31 z Component.K 3 -1.0E31 Positional GSE latitude GSE_LAT Latitude of the spacecraft position in GSE Deg Spherical GSE -90.0 90.0 -1.0E31 DirectionAngle.ElevationAngle Positional GSE longitude GSE_LON Longitude of the spacecraft position in GSE Deg Spherical GSE -180.0 360.0 -1.0E31 DirectionAngle.AzimuthAngle Positional GSE local time GSE_LCT_T hours 0.0 24.0 -1.0E31 DirectionAngle.AzimuthAngle Positional GSM position XYZ_GSM Spacecraft position in GSM km 1e3>m Cartesian GSM 3 x Component.I 1 -1.0E31 y Component.J 2 -1.0E31 z Component.K 3 -1.0E31 Positional GSM latitude GSM_LAT Latitude of the spacecraft position in GSM Deg Spherical GSM -90.0 90.0 -1.0E31 DirectionAngle.ElevationAngle Positional GSM longitude GSM_LON Longitude of the spacecraft position in GSM Deg Spherical GSM -180.0 360.0 -1.0E31 DirectionAngle.AzimuthAngle Positional SM position XYZ_SM Spacecraft position in SM km 1e3>m Cartesian SM 3 x Component.I 1 -1.0E31 y Component.J 2 -1.0E31 z Component.K 3 -1.0E31 Positional SM latitude SM_LAT Latitude of the spacecraft position in SM Deg Spherical SM -90.0 90.0 -1.0E31 DirectionAngle.ElevationAngle Positional SM longitude SM_LON Longitude of the spacecraft position in SM Deg Spherical SM -180.0 360.0 -1.0E31 DirectionAngle.AzimuthAngle Positional SM local time SM_LCT_T hours 0.0 24.0 -1.0E31 DirectionAngle.AzimuthAngle Positional Space Region SPACECRAFT_REGIONS Region in space where the spacecraft is located. Values are: 1 = INTERPLANETARY_MEDIUM, 2 = DAYSIDE_MAGNETOSHEATH, 3 = NIGHTSIDE_MAGNETOSHEATH, 4 = DAYSIDE_MAGNETOSPHERE, 5 = NIGHTSIDE_MAGNETOSPHERE, 6 = PLASMA_SHEET, 7 = TAIL_LOBE, 8 = LOW_LATITUDE_BOUNDARY_LAYER, 9 = HIGH_LATITUDE_BOUNDARY_LAYER, 10 = DAYSIDE_PLASMASPHERE, 11 = NIGHTSIDE_PLASMASPHERE. 1 11 -2147483648 Scalar Other Radial Traced Footpoint Region RADIAL_TRACED_REGIONS Region on the Earth's surface where a straight line would intersect when connecting the spacecraft and the Earth's center. Values are: 0 = NOT_APPLICABLE, 1 = NORTH_CUSP, 2 = SOUTH_CUSP, 3 = NORTH_CLEFT, 4 = SOUTH_CLEFT, 5 = NORTH_AURORAL_OVAL, 6 = SOUTH_AURORAL_OVAL, 7 = NORTH_POLAR_CAP, 8 = SOUTH_POLAR_CAP, 9 = NORTH_MID_LATITUDE, 10 = SOUTH_MID_LATITUDE, 11 = LOW_LATITUDE. 0 11 -2147483648 Scalar Other North B Traced Footpoint Region NORTH_BTRACED_REGIONS Region on the Earth's surface where the magnetic field line that passes through the spacecraft intersects the Earth's surface in the Earth's northern magnetic hemisphere. Values are: 0 = NOT_APPLICABLE, 1 = NORTH_CUSP, 3 = NORTH_CLEFT, 5 = NORTH_AURORAL_OVAL, 7 = NORTH_POLAR_CAP, 9 = NORTH_MID_LATITUDE, 11 = LOW_LATITUDE. 0 11 -2147483648 Scalar Other South B Traced Region SOUTH_BTRACED_REGIONS Region on the Earth's surface where the magnetic field line that passes through the spacecraft intersects the Earth's surface in the Earth's southern magnetic hemisphere. Values are: 0 = NOT_APPLICABLE, 2 = SOUTH_CUSP, 4 = SOUTH_CLEFT, 6 = SOUTH_AURORAL_OVAL, 8 = SOUTH_POLAR_CAP, 10 = SOUTH_MID_LATITUDE, 11 = LOW_LATITUDE. 0 11 -2147483648 Scalar Other Radial Distance RADIUS Radial distance of the spacecraft km 1e3>m Spherical GEO 0.0 -1.0E31 Magnitude Positional Magnetic Field Strength MAG_STRTH Model predicted magnetic field strength nT 0.0 -1.0E31 Magnetic Dipole L Value L_VALUE Mcllwain L value at the spacecraft's location 1.5 5.0 -1.0E31 Positional Dipole Invariant Lattitude INVAR_LAT Dipole invariant latitudes at the spacecraft's location Deg -90.0 90.0 -1.0E31 DirectionAngle.ElevationAngle Positional Distance to neutral sheet DNEUTS Distance from satellite to neutral sheet Km 0.0 -1.0E31 Scalar Positional Distance to bow shock BOW_SHOCK Distance from satellite to bow shock Km 0.0 -1.0E31 Scalar Positional Distance to magnetopause MAG_PAUSE Distance from satellite to magnetopause Km 0.0 -1.0E31 Scalar Positional Magnetic Field Strength along the GSE X axis MAG_X Model predicted magnetic field strength along the GSE X axis nT 0.0 -1.0E31 Component.I Magnetic Magnetic Field Strength along the GSE Y axis MAG_Y Model predicted magnetic field strength along the GSE Y axis nT 0.0 -1.0E31 Component.J Magnetic Magnetic Field Strength along the GSE Z axis MAG_Z Model predicted magnetic field strength along the GSE Z axis nT 0.0 -1.0E31 Component.K Magnetic North Hemisphere B Trace GEO latitude NorthBtrace_GEO_LAT Latitude of the northern magnetic field traced footpoint in GEO Deg Spherical GEO 0.0 90.0 -1.0E31 DirectionAngle.ElevationAngle Positional North Hemisphere B Trace GEO longitude NorthBtrace_GEO_LON Longitude of the northern magnetic field traced footpoint in GEO Deg Spherical GEO -180.0 360.0 -1.0E31 DirectionAngle.AzimuthAngle Positional North Hemisphere B Trace GEO arc length NorthBtrace_GEO_ARCLEN Length of the magnetic field traced arc from the spacecraft to the northern footpoint in GEO Km 0.0 -1.0E31 Scalar Other South Hemisphere B Trace GEO latitude SouthBtrace_GEO_LAT Latitude of the southern magnetic field traced footpoint in GEO Deg Spherical GEO -90.0 0.0 -1.0E31 DirectionAngle.ElevationAngle Positional South Hemisphere B Trace GEO longitude SouthBtrace_GEO_LON Longitude of the southern magnetic field traced footpoint in GEO Deg Spherical GEO -180.0 360.0 -1.0E31 DirectionAngle.AzimuthAngle Positional South Hemisphere B Trace GEO arc length SouthBtrace_GEO_ARCLEN Length of the magnetic field traced arc from the spacecraft to the southern footpoint in GEO Km 0.0 -1.0E31 Scalar Other North Hemisphere B Trace GM latitude NorthBtrace_GM_LAT Latitude of the northern magnetic field traced footpoint in GM Deg Spherical MAG 0.0 90.0 -1.0E31 DirectionAngle.ElevationAngle Positional North Hemisphere B Trace GM longitude NorthBtrace_GM_LON Longitude of the northern magnetic field traced footpoint in GM Deg Spherical MAG -180.0 360.0 -1.0E31 DirectionAngle.AzimuthAngle Positional North Hemisphere B Trace GM arc length NorthBtrace_GM_ARCLEN Length of the magnetic field traced arc from the spacecraft to the northern footpoint in GM Km 0.0 -1.0E31 Scalar Other South Hemisphere B Trace GM latitude SouthBtrace_GM_LAT Latitude of the southern magnetic field traced footpoint in GM Deg Spherical MAG -90.0 0.0 -1.0E31 DirectionAngle.ElevationAngle Positional South Hemisphere B Trace GM longitude SouthBtrace_GM_LON Longitude of the southern magnetic field traced footpoint in GM Deg Spherical MAG -180.0 360.0 -1.0E31 DirectionAngle.AzimuthAngle Positional South Hemisphere B Trace GM arc length SouthBtrace_GM_ARCLEN Length of the magnetic field traced arc from the spacecraft to the southern footpoint in GM Km 0.0 -1.0E31 Scalar Other