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ACE Electron Proton Alpha Monitor (EPAM) Ephemeris Data, Hourly Averages

(2022). ACE Electron Proton Alpha Monitor (EPAM) Ephemeris Data, Hourly Averages [Data set]. NASA Space Physics Data Facility. https://doi.org/10.48322/bs7x-2t71. Accessed on .

Note: Proper references, including those in BibTex or other formats, should include the "Accessed on date" as shown above to identify the version of the resource being cited in a given publication.

ResourceID
spase://NASA/NumericalData/ACE/EPAM/Ephemeris/PT1H

Description

Hourly-averaged ephemeris data for the ACE spacecraft, Earth, and Jupiter. Also included are the orientation of the ACE spin-axis, and a rotation matrix for transforming from HEE cartisian coordinates to RTN coordinates.

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Details

Version:2.4.1

NumericalData

ResourceID
spase://NASA/NumericalData/ACE/EPAM/Ephemeris/PT1H
ResourceHeader
ResourceName
ACE Electron Proton Alpha Monitor (EPAM) Ephemeris Data, Hourly Averages
AlternateName
EPAM-EPH-1H
DOI
https://doi.org/10.48322/bs7x-2t71
ReleaseDate
2022-07-25 12:34:56.789
RevisionHistory
RevisionEvent
ReleaseDate
2020-07-07 21:14:07
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2022-07-25 12:34:56.789
Note
Added DOI and PublicationInfo, updated the DataProducer Person to Dennis Hagerty by JMW 2022-06-02, nine Parameter Description typos corrected, metadata updated to SPASE 2.4.1, reviewed by LFB 20220724
Description

Hourly-averaged ephemeris data for the ACE spacecraft, Earth, and Jupiter. Also included are the orientation of the ACE spin-axis, and a rotation matrix for transforming from HEE cartisian coordinates to RTN coordinates.

Acknowledgement
Thomas P. Armstrong, Fundamental Technologies LLC
PublicationInfo
Authors
Gold, R. E., Roelof, E. C., Krimigis, S., Haggerty, D., Armstrong, T., Manweiler, J. W., and Patterson, J. D.
PublicationDate
2022-04-27 12:17:00Z
PublishedBy
NASA Space Physics Data Facility
Contacts
RolePersonStartDateStopDateNote
1.DataProducerspase://SMWG/Person/Dennis.Haggerty
2.MetadataContactspase://SMWG/Person/Lee.Frost.Bargatze
InformationURL
Name
Explanation of EPAM print-groups and CSV file nomenclature.
URL
http://data.ftecs.com/VHO/VEPO/ace_epam/explanation-csv-files.html
Description

The Explanation HTML page at Fundamental Technologies describes how the numeric data from the ACE EPAM instrument are divided into different print-groups, the nomenclature of the ASCII-based comma-separated variable (CSV) files, and how those files can be accessed.

Association
AssociationID
spase://NASA/NumericalData/ACE/EPAM/Ephemeris/PT11.5S
AssociationType
Other
Association
AssociationID
spase://NASA/NumericalData/ACE/EPAM/Ephemeris/PT5M
AssociationType
Other
Association
AssociationID
spase://NASA/NumericalData/ACE/EPAM/Ephemeris/P1D
AssociationType
Other
PriorIDs
spase://VEPO/NumericalData/ACE/EPAM/Ephemeris/PT1H
spase://VSPO/NumericalData/ACE/EPAM/Ephemeris/PT1H
AccessInformation
RepositoryID
spase://SMWG/Repository/FTECS
Availability
Online
AccessRights
Open
AccessURL
Name
ACE EPAM EPH Hourly-Averaged
URL
http://data.ftecs.com/VHO/VEPO/ace_epam/rates/Hourly/
Description

Folder containing CSV data files.

Format
Text
Encoding
ASCII
Acknowledgement
Thomas P. Armstrong, Fundamental Technologies LLC
InstrumentIDs
spase://SMWG/Instrument/ACE/EPAM
MeasurementType
EnergeticParticles
TemporalDescription
TimeSpan
StartDate
1991-01-01 00:00:00.000
StopDate
2008-12-31 23:59:59.000
Cadence
PT1H
ObservedRegion
Heliosphere.NearEarth
Parameter #1
Name
Time for the record
ParameterKey
Time_EPH
Description

Time for the record given in year, day of year, hour, min, and decimal seconds. The given time represents the beginning of the averaging interval.

Cadence
PT1H
Structure
Size
5
Element
Name
Year
Index
1
ValidMin
1991
ValidMax
2008
FillValue
-9999
Element
Name
Day of year
Index
2
ValidMin
1
ValidMax
366
FillValue
-999
Element
Name
Hour of day
Index
3
ValidMin
0
ValidMax
23
FillValue
-99
Element
Name
Minute of hour
Index
4
ValidMin
0
ValidMax
59
FillValue
-99
Element
Name
Seconds of minute
Index
5
ValidMin
0.00
ValidMax
59.99
FillValue
-99.99
Support
SupportQuantity
Temporal
Parameter #2
Name
Spacecraft X Component
ParameterKey
SC-Loc-X-pSEDR
Description

X-Coordinate of the spacecraft location in HEE coordinates from the predicted Supplimental Experimenter Data Record (SEDR)

Units
km
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
HEE
Support
SupportQuantity
Positional
Parameter #3
Name
Spacecraft Y Component
ParameterKey
SC-Loc-Y-pSEDR
Description

Y-Coordinate of the spacecraft location in HEE coordinates from the predicted Supplimental Experimenter Data Record (SEDR)

Units
km
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
HEE
Support
SupportQuantity
Positional
Parameter #4
Name
Spacecraft Z Component
ParameterKey
Loc-Z
Description

Z-Coordinate of the spacecraft location in HEE coordinates from the predicted Supplimental Experimenter Data Record (SEDR)

Units
km
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
HEE
Support
SupportQuantity
Positional
Parameter #5
Name
Earth X Component
ParameterKey
Earth-Loc-X-pSEDR
Description

X-Coordinate of the Earth in HEE coordinates from the predicted Supplimental Experimenter Data Record (SEDR)

Units
km
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
HEE
Support
SupportQuantity
Positional
Parameter #6
Name
Earth Y Component
ParameterKey
Earth-Loc-Y-pSEDR
Description

Y-Coordinate of the Earth in HEE coordinates from the predicted Supplimental Experimenter Data Record (SEDR)

Units
km
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
HEE
Support
SupportQuantity
Positional
Parameter #7
Name
Earth Z Component
ParameterKey
Earth-Loc-Z-pSEDR
Description

Z-Coordinate of the Earth in HEE coordinates from the predicted Supplimental Experimenter Data Record (SEDR)

Units
km
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
HEE
Support
SupportQuantity
Positional
Parameter #8
Name
Jupiter X Component
ParameterKey
Jupiter-Loc-X-pSEDR
Description

X-Coordinate of Jupiter in HEE coordinates from the predicted Supplimental Experimenter Data Record (SEDR)

Units
km
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
HEE
Support
SupportQuantity
Positional
Parameter #9
Name
Jupiter Y Component
ParameterKey
Jupiter-Loc-Y-pSEDR
Description

Y-Coordinate of Jupiter in HEE coordinates from the predicted Supplimental Experimenter Data Record (SEDR)

Units
km
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
HEE
Support
SupportQuantity
Positional
Parameter #10
Name
Jupiter Z Component
ParameterKey
-Jupiter-Loc-Z-pSEDR
Description

Z-Coordinate of Jupiter in HEE coordinates from the predicted Supplimental Experimenter Data Record (SEDR)

Units
km
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
HEE
Support
SupportQuantity
Positional
Parameter #11
Name
Starting Spin-Axis Longitude
ParameterKey
Spin-Lon-Start
Description

Longitude of the spacecraft spin-axis in HEE coordinates at the beginning of the time interval.

Units
deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
HEE
Support
SupportQuantity
Positional
Parameter #12
Name
Starting Spin-Axis Latitude
ParameterKey
Spin-Lat-Starts
Description

Latitude of the spacecraft spin-axis in HEE coordinates at the beginning of the time interval.

Units
deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
HEE
Support
SupportQuantity
Positional
Parameter #13
Name
Starting Spin-Axis Longitude Uncertainty
ParameterKey
Spin-Lon-Unc-Start
Description

Uncertainty in the longitude of the spacecraft spin-axis in HEE coordinates at the beginning of the time interval.

Units
deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
HEE
Support
SupportQuantity
Positional
Parameter #14
Name
Starting Spin-Axis Latitude Uncertainty
ParameterKey
Spin-Lat-Unc-Start
Description

Uncertainty in the latitude of the spacecraft spin-axis in HEE coordinates at the beginning of the time interval.

Units
deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
HEE
Support
SupportQuantity
Positional
Parameter #15
Name
Ending Spin-Axis Longitude
ParameterKey
Spin-Lon-Stop
Description

Longitude of the spacecraft spin-axis in HEE coordinates at the end of the time interval.

Units
deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
HEE
Support
SupportQuantity
Positional
Parameter #16
Name
Ending Spin-Axis Latitude
ParameterKey
Spin-Lat-Stop
Description

Latitude of the spacecraft spin-axis in HEE coordinates at the end of the time interval.

Units
deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
HEE
Support
SupportQuantity
Positional
Parameter #17
Name
Ending Spin-Axis Longitude Uncertainty
ParameterKey
Spin-Lon-Unc-Stop
Description

Uncertainty in the longitude of the spacecraft spin-axis in HEE coordinates at the end of the time interval.

Units
deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
HEE
Support
SupportQuantity
Positional
Parameter #18
Name
Ending Spin-Axis Latitude Uncertainty
ParameterKey
Spin-Lat-Unc-Stop
Description

Uncertainty in the latitude of the spacecraft spin-axis in HEE coordinates at the end of the time interval.

Units
deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
HEE
Support
SupportQuantity
Positional
Parameter #19
Name
Payload to RTN Rotation Operator Element a11
ParameterKey
SC-RTN-a11
Description

Row 1, Column 1 of the Payload to RTN rotation operator.

Support
SupportQuantity
Positional
Parameter #20
Name
Payload to RTN Rotation Operator Element a12
ParameterKey
SC-RTN-a12
Description

Row 1, Column 2 of the Payload to RTN rotation operator.

Support
SupportQuantity
Positional
Parameter #21
Name
Payload to RTN Rotation Operator Element a13
ParameterKey
SC-RTN-a13
Description

Row 1, Column 3 of the Payload to RTN rotation operator.

Support
SupportQuantity
Positional
Parameter #22
Name
Payload to RTN Rotation Operator Element a21
ParameterKey
SC-RTN-a21
Description

Row 2, Column 1 of the Payload to RTN rotation operator.

Support
SupportQuantity
Positional
Parameter #23
Name
Payload to RTN Rotation Operator Element a22
ParameterKey
SC-RTN-a22
Description

Row 2, Column 2 of the Payload to RTN rotation operator.

Support
SupportQuantity
Positional
Parameter #24
Name
Payload to RTN Rotation Operator Element a23
ParameterKey
SC-RTN-a23
Description

Row 2, Column 3 of the Payload to RTN rotation operator.

Support
SupportQuantity
Positional
Parameter #25
Name
Payload to RTN Rotation Operator Element a31
ParameterKey
SC-RTN-a31
Description

Row 3, Column 1 of the Payload to RTN rotation operator.

Support
SupportQuantity
Positional
Parameter #26
Name
Payload to RTN Rotation Operator Element a32
ParameterKey
SC-RTN-a32
Description

Row 3, Column 2 of the Payload to RTN rotation operator.

Support
SupportQuantity
Positional
Parameter #27
Name
Payload to RTN Rotation Operator Element a33
ParameterKey
SC-RTN-a33
Description

Row 3, Column 3 of the Payload to RTN rotation operator.

Support
SupportQuantity
Positional
Parameter #28
Name
Payload to HEE Rotation Operator Element a11
ParameterKey
SC-HEE-a11
Description

Row 1, Column 1 of the Payload to HEE rotation operator.

Support
SupportQuantity
Positional
Parameter #29
Name
Payload to HEE Rotation Operator Element a12
ParameterKey
SC-HEE-a12
Description

Row 1, Column 2 of the Payload to HEE rotation operator.

Support
SupportQuantity
Positional
Parameter #30
Name
Payload to HEE Rotation Operator Element a13
ParameterKey
SC-HEE-a13
Description

Row 1, Column 3 of the Payload to HEE rotation operator.

Support
SupportQuantity
Positional
Parameter #31
Name
Payload to HEE Rotation Operator Element a21
ParameterKey
SC-HEE-a21
Description

Row 2, Column 1 of the Payload to HEE rotation operator.

Support
SupportQuantity
Positional
Parameter #32
Name
Payload to HEE Rotation Operator Element a22
ParameterKey
SC-HEE-a22
Description

Row 2, Column 2 of the Payload to HEE rotation operator.

Support
SupportQuantity
Positional
Parameter #33
Name
Payload to HEE Rotation Operator Element a23
ParameterKey
SC-HEE-a23
Description

Row 2, Column 3 of the Payload to HEE rotation operator.

Support
SupportQuantity
Positional
Parameter #34
Name
Payload to HEE Rotation Operator Element a31
ParameterKey
SC-HEE-a31
Description

Row 3, Column 1 of the Payload to HEE rotation operator.

Support
SupportQuantity
Positional
Parameter #35
Name
Payload to HEE Rotation Operator Element a32
ParameterKey
SC-HEE-a32
Description

Row 3, Column 2 of the Payload to HEE rotation operator.

Support
SupportQuantity
Positional
Parameter #36
Name
Payload to HEE Rotation Operator Element a33
ParameterKey
SC-HEE-a33
Description

Row 3, Column 3 of the Payload to HEE rotation operator.

Support
SupportQuantity
Positional
Parameter #37
Name
Payload to EME Rotation Operator Element a11
ParameterKey
SC-EME-a11
Description

Row 1, Column 1 of the Payload to EME rotation operator.

Support
SupportQuantity
Positional
Parameter #38
Name
Payload to EME Rotation Operator Element a12
ParameterKey
SC-EME-a12
Description

Row 1, Column 2 of the Payload to EME rotation operator.

Support
SupportQuantity
Positional
Parameter #39
Name
Payload to EME Rotation Operator Element a13
ParameterKey
SC-EME-a13
Description

Row 1, Column 3 of the Payload to EME rotation operator.

Support
SupportQuantity
Positional
Parameter #40
Name
Payload to EME Rotation Operator Element a21
ParameterKey
SC-EME-a21
Description

Row 2, Column 1 of the Payload to EME rotation operator.

Support
SupportQuantity
Positional
Parameter #41
Name
Payload to EME Rotation Operator Element a22
ParameterKey
SC-EME-a22
Description

Row 2, Column 2 of the Payload to EME rotation operator.

Support
SupportQuantity
Positional
Parameter #42
Name
Payload to EME Rotation Operator Element a23
ParameterKey
SC-EME-a23
Description

Row 2, Column 3 of the Payload to EME rotation operator.

Support
SupportQuantity
Positional
Parameter #43
Name
Payload to EME Rotation Operator Element a31
ParameterKey
SC-EME-a31
Description

Row 3, Column 1 of the Payload to EME rotation operator.

Support
SupportQuantity
Positional
Parameter #44
Name
Payload to EME Rotation Operator Element a32
ParameterKey
SC-EME-a32
Description

Row 3, Column 2 of the Payload to EME rotation operator.

Support
SupportQuantity
Positional
Parameter #45
Name
Payload to EME Rotation Operator Element a33
ParameterKey
SC-EME-a33
Description

Row 3, Column 3 of the Payload to EME rotation operator.

Support
SupportQuantity
Positional