Data Description

This page summarizes information about the selected resource and its origin based on SPASE metadata.

Table of Contents

  1. Product
  2. Repository
  3. Instrument
  4. Observatory
  5. Persons

SPASE version 2.0.0

Numerical Data Product: ACE Positions

Resource ID
spase://VHO/NumericalData/ACE/Ephemeris/PT12M Get XML
Name
ACE Positions
Description

ACE satellite positions.

Contact
Role Person
1. Metadata contact Jan Merka Get XML
Release date
2009-05-20 19:08:29
Repository
Name
CDAWeb Data Repository FTP Interface Get XML
Availability
Online
Access rights
Open
URL
CDAWeb FTP Access

NASA/GSFC CDAWeb ftp access to ACE orbital data.

Format
CDF
Encoding
None
Instrument
ACE Positions Get XML
Measurement type
Ephemeris
Temporal description
Start date
1997-08-26 00:00:00
Relative stop date
7 days ago
Cadence
12 minutes
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Parameters

Parameter #1

Name
Epoch Time
Parameter key
Epoch
Description

Number of milliseconds since the CDF epoch

Units
ms
Conversion to SI units
1e-3>s
Valid minimum
01-Jan-1956 00:00:00.000
Valid maximum
01-Jan-2083 00:00:00.000
Fill value
-1.0E31
Parameter type
Temporal

Parameter #2

Name
GSE latitude
Parameter key
GSE_LAT
Description

Latitude of the spacecraft position in GSE

Units
Deg
Coordinate system
Spherical GSE
Valid minimum
-90.0
Valid maximum
90.0
Fill value
-1.0E31
Parameter type
Positional
Qualifier
Elevation angle

Parameter #3

Name
GSE longitude
Parameter key
GSE_LON
Description

Longitude of the spacecraft position in GSE

Units
Deg
Coordinate system
Spherical GSE
Valid minimum
-180.0
Valid maximum
180.0
Fill value
-1.0E31
Parameter type
Positional
Qualifier
Azimuth angle

Parameter #4

Name
GSE radial distance
Parameter key
RADIUS
Description

Radial distance of the spacecraft in GSE

Units
km
Conversion to SI units
1e3>m
Coordinate system
Spherical GSE
Valid minimum
0.0
Valid maximum
1594535.0
Fill value
-1.0E31
Parameter type
Positional
Qualifier
Magnitude

Parameter #5

Name
GSE position
Parameter key
XYZ_GSE
Description

Spacecraft position in GSE

Units
km
Conversion to SI units
1e3>m
Coordinate system
Cartesian GSE
Structure
Size
3
Elements
Index Name Component Valid min Valid max Fill value
1 x I -1594535.0 1594535.0 -1.0E31
2 y J -1594535.0 1594535.0 -1.0E31
3 z K -1594535.0 1594535.0 -1.0E31
Parameter type
Positional
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SPASE version 2.0.0

Instrument: ACE Positions

Instrument ID
spase://SMWG/Instrument/ACE/Ephemeris Get XML
Name
ACE Positions
Alternate name
ACE Ephemeris
Description

ACE spacecraft positions

Contact
Role Person
1. Metadata contact Jan Merka Get XML
Release date
2009-05-20 21:10:13
Instrument type
Platform
Investigation name
Spacecraft position
Observatory
ACE Get XML
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SPASE version 2.0.0

Observatory: ACE

Observatory ID
spase://SMWG/Observatory/ACE Get XML
Name
ACE
Alternate name
Advanced Composition Explorer
1997-045A
Explorer 71
Description

The objective of the Advanced Composition Explorer (ACE) is to collect observations of particles of solar, interplanetary, interstellar, and galactic origins, spanning the energy range from that of KeV solar wind ions to galactic cosmic ray nuclei up to 600 MeV/nucleon. Definitive studies will be made of the abundances of essentially all isotopes from H to Zn (Z = 1-30), with exploratory isotope studies extending to Zr (Z = 40). The ACE payload includes six high resolution spectrometers, each designed to provide the optimum charge, mass, or charge-state resolution in its particular energy range. Each spectrometer has a geometry factor optimized for the expected flux levels, so as to provide a collecting power greater by a factor of 10-1000 times that of previous or planned experiments. The payload also includes three additional instruments of standard design to monitor energetic electrons, H and He ions, and a magnetometer. The ACE spacecraft is based on the design of the Charge Composition Explorer, built at JHU/APL for the Active Magnetospheric Particle Tracer Explorer (AMPTE) program. The spacecraft spin axis is pointed towards the Sun to within +/- 20 degrees, and it occupies a halo orbit about the L1 Earth-Sun libration point. Powered by solar cells, the spacecraft has a design life of at least five years, and it returns data in daily tape recorder dumps, received through NASA JPL's Deep Space Network and initially processed at NASA-GSFC. The average data telemetry rate is 6.7 Kbs.

Additional information
ACE Home Page

ACE mission home page at Caltech with data download

NSSDC's Master Catalog

Information about the ACE mission

Contact
Role Person
1. Principal investigator Prof. Edward C. Stone, Jr. Get XML
Release date
2009-05-20 20:00:12
Prior ID
spase://vspo/observatory/2
Location
Region
Heliosphere.Inner
Heliosphere.NearEarth
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SPASE version 2.0.0

Person: Jan Merka

Name
Jan Merka
Organization
NASA Goddard Space Flight Center
Address
Code 672, Greenbelt, MD 20771, USA
Email
jan.merka@nasa.gov
Phone
1-301-286-8751
Person ID
spase://SMWG/Person/Jan.Merka Get XML
Release date
2007-08-09 22:02:24
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SPASE version 2.0.0

Person: Dr. Robert E. McGuire

Name
Dr. Robert E. McGuire
Organization
NASA Goddard Space Flight Center
Address
Code 672, Greenbelt, MD 20771, USA
Email
mcguire@mail630.gsfc.nasa.gov
Phone
1-301-286-7794
Person ID
spase://SMWG/Person/Robert.E.McGuire Get XML
Release date
2007-05-30 15:25:24
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SPASE version 2.0.0

Person: Prof. Edward C. Stone, Jr.

Name
Prof. Edward C. Stone, Jr.
Organization
California Institute of Technology
Email
ecs@srl.caltech.edu
Phone
+1-626-395-8321
Person ID
spase://SMWG/Person/Edward.C.Stone.Jr Get XML
Release date
2001-04-02 00:00:00
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SPASE version 1.2.0

Repository: CDAWeb Data Repository FTP Interface

Repository ID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Get XML
Name
CDAWeb Data Repository FTP Interface
Description

Coordinated Data Analysis Web (CDAWeb) supports not only interactive plotting of variables from multiple instruments on multiple investigations simultaneously on arbitrary, user-defined time-scales. It also supports data retrieval in various formats using its interactive web interface or ftp service.

Additional information
CDAWeb Home Page

Coordinated Data Analysis Web (CDAWeb) home page at Space Physics Data Facility of the NASA Goddard Space Flight Center.

Contact
Role Person
1. Project scientist Dr. Robert E. McGuire Get XML
Release date
2008-08-26 21:14:34
Prior ID
spase://VMO/Repository/CDAWeb
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