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Data Access
FTPS from SPDF (not with most browsers)
HTTPS from SPDF
CDAWeb
WebService:
CDAWeb Programmatic Data Access
HAPI: CDAWeb HAPI Server
ISEE 3 Vector Helium Magnetometer (MAG), Magnetic Field, 1 min CDF Data
var authors='Smith, Edward, J.';
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(2023).
ISEE 3 Vector Helium Magnetometer (MAG), Magnetic Field, 1 min CDF Data.
[Data set].
Space Physics Data Facility.
https://doi.org/10.48322/t0jh-af86. Accessed on document.write(currentDateStr);.
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ResourceID
spase://NASA/NumericalData/ISEE3/MAG/CDF/PT1M
Description
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 .
Metadata Rights
CC0-1.0:
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions. The actual data/software may be subject to a different license.
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Details
Version:2.7.1
NumericalData
ResourceID
spase://NASA/NumericalData/ISEE3/MAG/CDF/PT1M
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
ISEE 3 Vector Helium Magnetometer (MAG), Magnetic Field, 1 min CDF Data
DOI
https://doi.org/10.48322/t0jh-af86
ReleaseDate
2026-06-26 13:18:10Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-04-27 15:38:11Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2023-07-30 12:34:56.789Z
Note
Added DOI and PublicationInfo minted by LFB, metadata versioned up to SPASE 2.6.0, reviewed by LFB 20230727
RevisionEvent
ReleaseDate
2025-10-02 15:12:01Z
Note
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
RevisionEvent
ReleaseDate
2025-12-04 13:29:39Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
RevisionEvent
ReleaseDate
2026-06-26 13:18:10Z
Note
Add 'Z' to RevisionEvent:ReleaseDate(s), PublicationDate, TemporalDescription:TimeSpan:StartDate, TemporalDescription:TimeSpan:StopDate. ZCB
Description
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 .
Acknowledgement
E.J. Smith
PublicationInfo
Authors
Smith, Edward, J.
PublicationDate
2023-01-01 00:00:00Z
PublishedBy
Space Physics Data Facility
Contacts
Role
Person
StartDate
StopDate
Note
1.
PrincipalInvestigator
spase://SMWG/Person/Edward.J.Smith
2.
MetadataContact
spase://SMWG/Person/Robert.E.McGuire
3.
MetadataContact
spase://SMWG/Person/Lee.Frost.Bargatze
InformationURL
Name
ISEE-3 Magnetic Field 1 min Average ASCII Data, 1978-1983, Magnetospheric Phase of the ISEE 3 Mission
URL
https://spdf.gsfc.nasa.gov/pub/data/isee/isee3/magnetic_fields/1min_ascii_extracted/1min_1978_1983/00readme.txt
Description
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
PriorIDs
spase://VSPO/NumericalData/ISEE3/MAG/CDF/PT1M
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb
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/isee/isee3/isee3_cdaweb/1min_magnetic_field/
Description
Access to Data in CDF Format via ftp from SPDF
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/isee/isee3/isee3_cdaweb/1min_magnetic_field/
Description
Access to Data in CDF Format via http from SPDF
AccessURL
Name
CDAWeb
URL
https://cdaweb.gsfc.nasa.gov/index.html
ProductKey
ISEE-3_MAG_1MIN_MAGNETIC_FIELD
Description
Access to ASCII, CDF, and plots via NASA/GSFC CDAWeb
Format
CDF
Encoding
None
AccessDirectoryTemplate
https://cdaweb.gsfc.nasa.gov/pub/data/isee/isee3/isee3_cdaweb/1min_magnetic_field
AccessFilenameTemplate
isee-3_mag_1min_magnetic_field_$Y$m$d_$v.cdf
Acknowledgement
E.J. Smith. Please acknowledge the data providers and CDAWeb when using these data.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb Programmatic Data Access
URL
https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/ISEE-3_MAG_1MIN_MAGNETIC_FIELD/clientLibraryExample/
Style
WebService
ProductKey
ISEE-3_MAG_1MIN_MAGNETIC_FIELD
Description
Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS.
Format
Binary
Acknowledgement
E.J. Smith. Please acknowledge the data providers and CDAWeb when using these data.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb
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 HAPI Server
URL
https://cdaweb.gsfc.nasa.gov/hapi
Style
HAPI
ProductKey
ISEE-3_MAG_1MIN_MAGNETIC_FIELD
Description
Web Service to this product using the HAPI interface.
Format
CSV
Acknowledgement
E.J. Smith. Please acknowledge the data providers and CDAWeb when using these data.
ProcessingLevel
Calibrated
InstrumentIDs
spase://SMWG/Instrument/ISEE3/MAG
MeasurementType
MagneticField
TemporalDescription
TimeSpan
StartDate
1978-08-01 00:00:00.000Z
StopDate
1990-01-01 23:59:59.999Z
Cadence
PT1M
ObservedRegion
Heliosphere
ObservedRegion
Heliosphere.NearEarth
ObservedRegion
Heliosphere.Outer
Parameter #1
Name
Epoch Time
ParameterKey
Epoch
Description
Epoch Time, Default
Cadence
PT1M
Units
ms
UnitsConversion
1.0e-3>s
ValidMin
01-Jan-1000 00:00:00.000
ValidMax
01-Jan-3000 00:00:00.000
FillValue
31-Dec-9999 23:59:59.999
Support
SupportQuantity
Temporal
Parameter #2
Name
Magnetic Field Vector, SE, Cartesian
Set
Time series defined by using: EPOCH
ParameterKey
B_comp
Description
Magnetic Field Vector, I,S Coordinates, essentially Spacecraft-Centered Solar Ecliptic, SE, Cartesian Coordinates
Cadence
PT1M
Units
nT
UnitsConversion
1.0e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SE
RenderingHints
DisplayType
TimeSeries
ValueFormat
F13.2
Structure
Size
3
Element
Name
X
Index
1
Element
Name
Y
Index
2
Element
Name
Z
Index
3
ValidMin
-1000.0
ValidMax
999.0
FillValue
-1.0e+31
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #3
Name
Magnetic Field Cross Product Matrix
Set
Time series defined by using: EPOCH
ParameterKey
BB_comp
Description
Magnetic Field Vector Cross Product Matrix
Cadence
PT1M
Units
nT^2
UnitsConversion
1.0e-18>T^2
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SE
RenderingHints
DisplayType
TimeSeries
ValueFormat
F13.2
Structure
Size
6
Element
Name
Bx^2
Index
1
Element
Name
BxBy
Index
2
Element
Name
BxBz
Index
3
Element
Name
By^2
Index
4
Element
Name
ByBz
Index
5
Element
Name
Bz^2
Index
6
ValidMin
-99999.0
ValidMax
99999.0
FillValue
-1.0e+31
Field
FieldQuantity
Magnetic
Parameter #4
Name
Magnetic Field Direction Vector
Set
Time series defined by using: EPOCH
ParameterKey
B_dir
Description
Magnetic Field Direction Unit Vector
Cadence
PT1M
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SE
RenderingHints
DisplayType
TimeSeries
ValueFormat
F13.2
Structure
Size
3
Element
Name
Bx/ B
Index
1
Element
Name
By/ B
Index
2
Element
Name
Bz/ B
Index
3
ValidMin
-100.0
ValidMax
99.0
FillValue
-1.0e+31
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #5
Name
Magnetic Field Magnitude
Set
Time series defined by using: EPOCH
ParameterKey
B_mag
Description
Total Magnetic Field Magnitude
Cadence
PT1M
Units
nT
UnitsConversion
1.0e-9>T
RenderingHints
DisplayType
TimeSeries
AxisLabel
B_total, nT
ValueFormat
F13.2
ValidMin
-1000.0
ValidMax
999.0
FillValue
-1.0e+31
Field
Qualifier
Magnitude
FieldQuantity
Magnetic
Parameter #6
Name
Magnetic Field Magnitude, Average
Set
Time series defined by using: EPOCH
ParameterKey
B2_avg
Description
Average Value of the Squared Magnetic Field Magnitude
Cadence
PT1M
Units
nT^2
UnitsConversion
1.0e-18>T^2
RenderingHints
DisplayType
TimeSeries
AxisLabel
B^2_average, nT^2
ValueFormat
F13.2
ValidMin
-1000.0
ValidMax
99999.0
FillValue
-1.0e+31
Field
Qualifier
Average
Qualifier
Magnitude
FieldQuantity
Magnetic
Parameter #7
Name
Spacecraft Position, GSE
Set
Time series defined by using: EPOCH
ParameterKey
sc_pos
Description
Spacecraft Position, Geocentric Ecliptic, GSE, Coordinates
Cadence
PT1M
Units
Re
UnitsConversion
6.3712e6>m
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
TimeSeries
ValueFormat
F13.2
Structure
Size
3
Element
Name
X_GSE
Index
1
Element
Name
Y_GSE
Index
2
Element
Name
Z_GSE
Index
3
ValidMin
-9999.0
ValidMax
9999.0
FillValue
-1.0e+31
Support
Qualifier
Vector
SupportQuantity
Positional
Parameter #8
Name
Spacecraft Position, Heliocentric Distance
Set
Time series defined by using: EPOCH
ParameterKey
sc_r
Description
Spacecraft Position, Heliocentric Distance
Cadence
PT1M
Units
ua
UnitsConversion
1.495978706961e11>m
RenderingHints
DisplayType
TimeSeries
AxisLabel
S/C dist, AU
ValueFormat
F13.2
ValidMin
0.0
ValidMax
9.9
FillValue
-1.0e+31
Support
Qualifier
Magnitude
SupportQuantity
Positional
Parameter #9
Name
Spacecraft Position, Latitude, SE
Set
Time series defined by using: EPOCH
ParameterKey
sc_lat
Description
Spacecraft Position, Latitude, Solar Ecliptic, SE, Coordinates
Cadence
PT1M
Units
°
UnitsConversion
0.0174532925>rad
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
SE
RenderingHints
DisplayType
TimeSeries
AxisLabel
SC latitude, deg
ValueFormat
F13.2
ValidMin
-1000.0
ValidMax
100.0
FillValue
-1.0e+31
Support
Qualifier
DirectionAngle.ElevationAngle
SupportQuantity
Positional
Parameter #10
Name
Spacecraft Position, Longitude, SE
Set
Time series defined by using: EPOCH
ParameterKey
sc_long
Description
Spacecraft Position, Longitude, Solar Ecliptic, SE, Coordinates
Cadence
PT1M
Units
°
UnitsConversion
0.0174532925>rad
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
SE
RenderingHints
DisplayType
TimeSeries
AxisLabel
SC longitude, deg
ValueFormat
F13.2
ValidMin
-1000.0
ValidMax
400.0
FillValue
-1.0e+31
Support
Qualifier
DirectionAngle.AzimuthAngle
SupportQuantity
Positional