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/ISEE3/MAG/CDF/PT1M NASA NumericalData ISEE 3 Vector Helium Magnetometer (MAG), Magnetic Field, 1 min CDF Data https://doi.org/10.48322/t0jh-af86 2026-06-26T13:18:10Z 2021-04-27T15:38:11Z Only known prior ReleaseDate of the metadata 2023-07-30T12:34:56.789Z Added DOI and PublicationInfo minted by LFB, metadata versioned up to SPASE 2.6.0, reviewed by LFB 20230727 2025-10-02T15:12:01Z Updated PublishedBy name to match ROR Registry. 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 2025-12-04T13:29:39Z Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB 2026-06-26T13:18:10Z Add 'Z' to RevisionEvent:ReleaseDate(s), PublicationDate, TemporalDescription:TimeSpan:StartDate, TemporalDescription:TimeSpan:StopDate. ZCB This Data Set contains averaged 1 min magnetic field data converted from simple ASCII records. It was created at the NSSDC from a more complex, multi-resolution data set with the current NSSDC ID of SPHE-00673 and old NSSDC ID of 78-079A-02D, provided by the Principal Investigator Team and now available from ftps://spdf.gsfc.nasa.gov/pub/data/isee/isee3/magnetic_fields/1min_ascii_extracted/. The Coordinate System for the magnetic field components is the JPL-defined I,S Coordinate System set at the origin at the spacecraft: I is the unit vector in the direction of the ISEE 3 spin axis, positive in the northward direction, and S is the unit vector from the spacecraft to the sun. The Z-Axis is parallel to I, the Y-Axis is parallel to the cross product I ⨯ S, and the X-Axis is parallel to Y ⨯ Z. The I,S coordinate system is approximately the same as the Solar Ecliptic, SE, System since the Spacecraft Z-Axis, the Spin Axis, is maintained within 0.5° of perpendicular to the Ecliptic Plane. The SE coordinate system is defined in the same way as GSE, but with the spacecraft point of observation substituted for the position of the earth. For years 1984 through 1990 the spacecraft position in HGI coordinates was added to the data product. The HGI coordinate system is sun-centered and inertially fixed with respect to an X-Axis directed along the intersection line of the Ecliptic and Solar Equatorial planes, which defines the 0° longitude direction. The Solar Equatorial plane is inclined at 7.25° from the Ecliptic. This direction was towards an Ecliptic longitude equal to 74.367° on January 1, 1900 at 12:00 UT, but because of the precession of the earth's equator, this longitude increases by 1.4° per century. The Z-Axis is directed perpendicular to and northward of the solar equator and the Y-Axis completes the right-handed Set. The HGI longitude increase from 0° in the X-Direction towards the positive Y-Direction. The HGI latitude increases to +90° at the north pole and decreases to -90° at the south pole. Note that the values listed are 1 min averages, so that B ^2 may not equal B^2 . E.J. Smith Smith, Edward, J. 2023-01-01T00:00:00Z Space Physics Data Facility spase://SMWG/Person/Edward.J.Smith PrincipalInvestigator spase://SMWG/Person/Robert.E.McGuire MetadataContact spase://SMWG/Person/Lee.Frost.Bargatze MetadataContact ISEE-3 Magnetic Field 1 min Average ASCII Data, 1978-1983, Magnetospheric Phase of the ISEE 3 Mission https://spdf.gsfc.nasa.gov/pub/data/isee/isee3/magnetic_fields/1min_ascii_extracted/1min_1978_1983/00readme.txt Description of the Format of the ISEE-3 Magnetic Field 1 min Average ASCII Data, 1978-1983, covering the Magnetospheric Phase of the ISEE 3 Mission spase://VSPO/NumericalData/ISEE3/MAG/CDF/PT1M spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb 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/isee/isee3/isee3_cdaweb/1min_magnetic_field/ Access to Data in CDF Format via ftp from SPDF HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/isee/isee3/isee3_cdaweb/1min_magnetic_field/ Access to Data in CDF Format via http from SPDF CDAWeb https://cdaweb.gsfc.nasa.gov/index.html ISEE-3_MAG_1MIN_MAGNETIC_FIELD Access to ASCII, CDF, and plots via NASA/GSFC CDAWeb CDF None https://cdaweb.gsfc.nasa.gov/pub/data/isee/isee3/isee3_cdaweb/1min_magnetic_field isee-3_mag_1min_magnetic_field_$Y$m$d_$v.cdf E.J. Smith. Please acknowledge the data providers and CDAWeb when using these data. spase://SMWG/Repository/NASA/GSFC/SPDF Online Open CDAWeb Programmatic Data Access https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/ISEE-3_MAG_1MIN_MAGNETIC_FIELD/clientLibraryExample/ ISEE-3_MAG_1MIN_MAGNETIC_FIELD Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS. Binary E.J. Smith. Please acknowledge the data providers and CDAWeb when using these data. spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb 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 ISEE-3_MAG_1MIN_MAGNETIC_FIELD Web Service to this product using the HAPI interface. CSV E.J. Smith. Please acknowledge the data providers and CDAWeb when using these data. Calibrated spase://SMWG/Instrument/ISEE3/MAG MagneticField 1978-08-01T00:00:00.000Z 1990-01-01T23:59:59.999Z PT1M Heliosphere Heliosphere.NearEarth Heliosphere.Outer Epoch Time Epoch Epoch Time, Default PT1M ms 1.0e-3>s 01-Jan-1000 00:00:00.000 01-Jan-3000 00:00:00.000 31-Dec-9999 23:59:59.999 Temporal Magnetic Field Vector, SE, Cartesian Time series defined by using: EPOCH B_comp Magnetic Field Vector, I,S Coordinates, essentially Spacecraft-Centered Solar Ecliptic, SE, Cartesian Coordinates PT1M nT 1.0e-9>T Cartesian SE TimeSeries F13.2 3 X 1 Y 2 Z 3 -1000.0 999.0 -1.0e+31 Vector Magnetic Magnetic Field Cross Product Matrix Time series defined by using: EPOCH BB_comp Magnetic Field Vector Cross Product Matrix PT1M nT^2 1.0e-18>T^2 Cartesian SE TimeSeries F13.2 6 Bx^2 1 BxBy 2 BxBz 3 By^2 4 ByBz 5 Bz^2 6 -99999.0 99999.0 -1.0e+31 Magnetic Magnetic Field Direction Vector Time series defined by using: EPOCH B_dir Magnetic Field Direction Unit Vector PT1M Cartesian SE TimeSeries F13.2 3 Bx/ B 1 By/ B 2 Bz/ B 3 -100.0 99.0 -1.0e+31 Vector Magnetic Magnetic Field Magnitude Time series defined by using: EPOCH B_mag Total Magnetic Field Magnitude PT1M nT 1.0e-9>T TimeSeries B_total, nT F13.2 -1000.0 999.0 -1.0e+31 Magnitude Magnetic Magnetic Field Magnitude, Average Time series defined by using: EPOCH B2_avg Average Value of the Squared Magnetic Field Magnitude PT1M nT^2 1.0e-18>T^2 TimeSeries B^2_average, nT^2 F13.2 -1000.0 99999.0 -1.0e+31 Average Magnitude Magnetic Spacecraft Position, GSE Time series defined by using: EPOCH sc_pos Spacecraft Position, Geocentric Ecliptic, GSE, Coordinates PT1M Re 6.3712e6>m Cartesian GSE TimeSeries F13.2 3 X_GSE 1 Y_GSE 2 Z_GSE 3 -9999.0 9999.0 -1.0e+31 Vector Positional Spacecraft Position, Heliocentric Distance Time series defined by using: EPOCH sc_r Spacecraft Position, Heliocentric Distance PT1M ua 1.495978706961e11>m TimeSeries S/C dist, AU F13.2 0.0 9.9 -1.0e+31 Magnitude Positional Spacecraft Position, Latitude, SE Time series defined by using: EPOCH sc_lat Spacecraft Position, Latitude, Solar Ecliptic, SE, Coordinates PT1M ° 0.0174532925>rad Spherical SE TimeSeries SC latitude, deg F13.2 -1000.0 100.0 -1.0e+31 DirectionAngle.ElevationAngle Positional Spacecraft Position, Longitude, SE Time series defined by using: EPOCH sc_long Spacecraft Position, Longitude, Solar Ecliptic, SE, Coordinates PT1M ° 0.0174532925>rad Spherical SE TimeSeries SC longitude, deg F13.2 -1000.0 400.0 -1.0e+31 DirectionAngle.AzimuthAngle Positional