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Data Access
FTPS from SPDF (not with most browsers)
HTTPS from SPDF
ISEE 3 64-min Trajectory Data
ResourceID
spase://NASA/NumericalData/ISEE3/Ephemeris/PT64M
Description
This data set was generated at NSSDC by selecting data parameters from the ISEE 3 data pool tape (binary) and converting to ASCII. The time resolution is about an hour and 4 minutes. Data records that contained fill data for the spacecraft position were not included in this data set. Only data items that are not instrument-specific are included here. The data items, in order, are: year, day of year (Jan. 1 = 001), seconds of day, bit rate code, maneuver code, spin period average (in seconds) over the hour, and the GSE X,Y,Z components of the spacecraft position (in km). The bit rate code is 1,2, or 4
for bit rates of 512, 1024, or 4028 bps, respectively. The maneuver code is 0 if there were no maneuvers during that time period (which can be up to an hour
and four minutes starting at the given time), and is 7 if there were any maneuvers during that time. Record length is 78 bytes. The time period covered
is from soon after launch through the end of the primary mission, i.e., August 13, 1978 through February 7, 1987.
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/Ephemeris/PT64M
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
ISEE 3 64-min Trajectory Data
ReleaseDate
2026-07-21 12:05:29Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-03-11 18:39:11Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2025-12-04 13:29:39Z
Note
Added MetadataRightsList and RightsList(s). Added ResourceType and NamingAuthority. Updated to 2.7.1. ZCB
RevisionEvent
ReleaseDate
2026-07-21 12:05:29Z
Note
Added HelioData InformationURL. JWL
Description
This data set was generated at NSSDC by selecting data parameters from the ISEE 3 data pool tape (binary) and converting to ASCII. The time resolution is about an hour and 4 minutes. Data records that contained fill data for the spacecraft position were not included in this data set. Only data items that are not instrument-specific are included here. The data items, in order, are: year, day of year (Jan. 1 = 001), seconds of day, bit rate code, maneuver code, spin period average (in seconds) over the hour, and the GSE X,Y,Z components of the spacecraft position (in km). The bit rate code is 1,2, or 4
for bit rates of 512, 1024, or 4028 bps, respectively. The maneuver code is 0 if there were no maneuvers during that time period (which can be up to an hour
and four minutes starting at the given time), and is 7 if there were any maneuvers during that time. Record length is 78 bytes. The time period covered
is from soon after launch through the end of the primary mission, i.e., August 13, 1978 through February 7, 1987.
Acknowledgement
Please acknowledge the the ISEE 3 / ICE project and the National Space Science Data Center(NSSDC).
Contacts
Role
Person
StartDate
StopDate
Note
1.
DataProducer
spase://SMWG/Person/H.Kent.Hills
InformationURL
Name
Readme file at SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/isee/isee3/traj/hourly_magnetospheric/aareadme_isee3_dp_ephem
InformationURL
Name
HelioData
URL
https://helio.data.nasa.gov/dataset/ISEE3_Ephemeris_PT64M
Description
The HelioData dataset page provides an overview of the dataset with access links, associated variables, and more.
PriorIDs
spase://VSPO/NumericalData/P_ISEE3_HDR_EPHEMERIS_64M
spase://VSPO/NumericalData/ISEE3/Ephemeris/PT64M
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
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/isee/isee3/traj/hourly_magnetospheric/
Description
Via ftp in ASCII from SPDF
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/isee/isee3/traj/hourly_magnetospheric/
Description
In CDF via HTTP from SPDF
Format
Text
Encoding
ASCII
InstrumentIDs
spase://SMWG/Instrument/ISEE3/Ephemeris
MeasurementType
Ephemeris
TemporalDescription
TimeSpan
StartDate
1978-08-13 00:00:00.000Z
StopDate
1987-02-07 00:00:00.000Z
Cadence
PT64M
ObservedRegion
Heliosphere.NearEarth
ObservedRegion
Earth.Magnetosphere
ObservedRegion
Earth.Magnetosheath