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Version:2.3.2

NumericalData

ResourceID
spase://NASA/NumericalData/IMP8/Ephemeris/PT12M
ResourceHeader
ResourceName
IMP 8 Spacecraft Positions
ReleaseDate
2021-04-27 15:38:11Z
Description

IMP-8 spacecraft positions in various coordinate systems

Contacts
RolePersonStartDateStopDateNote
1.Scientistspase://SMWG/Person/Adam.Szabo
PriorIDs
spase://VMO/NumericalData/IMP8/Ephemeris/PT12M
spase://VSPO/NumericalData/IMP8/Ephemeris/PT12M
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
Description

NASA/GSFC CDAWeb ftp access to the data.

AccessURL
Name
HTTPS from SPDF
URL
Description

In CDF via HTTP from SPDF

Format
CDF
Encoding
None
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb
URL
ProductKey
I8_OR_SSC
Description

I8_OR_SSC with subset, plot and list via CDAWeb

AccessURL
Format
Text
Acknowledgement
Please acknowledge the CDAWeb team at GSFC/SPDF.
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb HAPI Server
URL
Style
HAPI
ProductKey
I8_OR_SSC
Description

Web Service to this product using the HAPI interface.

Format
CSV
Acknowledgement
Please acknowledge the CDAWeb team at GSFC/SPDF.
InstrumentIDs
MeasurementType
Ephemeris
TemporalDescription
TimeSpan
StartDate
1973-10-30 00:00:00Z
RelativeStopDate
P0D
Cadence
PT12M
Parameter #1
Name
Epoch
ParameterKey
Epoch
Description

Number of milliseconds since the epoch 01-Jan-1956 00:00:00

Units
ms
UnitsConversion
1e-3>s
FillValue
-1.0e31
Support
SupportQuantity
Temporal
Parameter #2
Name
GSE Latitude
ParameterKey
GSE_LAT
Description

Spacecraft latitude in GSE coordinates

Units
deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GSE
ValidMin
-90.0
ValidMax
90.0
FillValue
-1.0e+31
Support
Qualifier
DirectionAngle.ElevationAngle
SupportQuantity
Positional
Parameter #3
Name
GSE Longitude
ParameterKey
GSE_LON
Description

Spacecraft longitude in GSE coordinates

Units
deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GSE
ValidMin
0.0
ValidMax
360.0
FillValue
-1.0e+31
Support
Qualifier
DirectionAngle.AzimuthAngle
SupportQuantity
Positional
Parameter #4
Name
GSE Local Time
ParameterKey
GSE_LCT_T
Description

Local time in GSE coordinates

Units
hr
UnitsConversion
3600>s
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GSE
ValidMin
0.0
ValidMax
24.0
FillValue
-1.0e+31
Support
Qualifier
DirectionAngle.AzimuthAngle
SupportQuantity
Positional
Parameter #5
Name
GSM Latitude
ParameterKey
GSM_LAT
Description

Spacecraft latitude in GSM coordinates

Units
deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GSM
ValidMin
-90.0
ValidMax
90.0
FillValue
-1.0e+31
Support
Qualifier
DirectionAngle.ElevationAngle
SupportQuantity
Positional
Parameter #6
Name
GSM Longitude
ParameterKey
GSM_LON
Description

Spacecraft longitude in GSM coordinates

Units
deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GSM
ValidMin
0.0
ValidMax
360.0
FillValue
-1.0e+31
Support
Qualifier
DirectionAngle.AzimuthAngle
SupportQuantity
Positional
Parameter #7
Name
Radial distance
ParameterKey
RADIUS
Description

Radial distance from the center of Earth

Units
Re
UnitsConversion
6.378e6>m
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GSE
ValidMin
0.0
ValidMax
250.0
FillValue
-1.0e+31
Support
Qualifier
Magnitude
SupportQuantity
Positional
Parameter #8
Name
GSE Position Vector
ParameterKey
XYZ_GSE
Description

Position in cartesian GSE coordinates

Units
Re
UnitsConversion
6.378e6>m
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Structure
Size
3
Element
Name
GSE X
Qualifier
Component.I
Index
1
Element
Name
GSE Y
Qualifier
Component.J
Index
2
Element
Name
GSE Z
Qualifier
Component.K
Index
3
ValidMin
-250.0
ValidMax
250.0
FillValue
-1.0e+31
Support
SupportQuantity
Positional
Parameter #9
Name
GSM Position Vector
ParameterKey
XYZ_GSM
Description

Position in cartesian GSM coordinates

Units
Re
UnitsConversion
6.378e6>m
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSM
Structure
Size
3
Element
Name
GSM X
Qualifier
Component.I
Index
1
Element
Name
GSM Y
Qualifier
Component.J
Index
2
Element
Name
GSM Z
Qualifier
Component.K
Index
3
ValidMin
-250.0
ValidMax
250.0
FillValue
-1.0e+31
Support
SupportQuantity
Positional