Data Set Information
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| DATA_SET_NAME |
GALILEO ORBITER EARTH POS EARTH2 FLYBY TRAJ V1.0
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| DATA_SET_ID |
GO-E-POS-6-EARTH2-FLYBY-TRAJ-V1.0
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| NSSDC_DATA_SET_ID |
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| DATA_SET_TERSE_DESCRIPTION |
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| DATA_SET_DESCRIPTION |
Data Set Overview ================= This dataset contains the Galileo spacecraft trajectory during the Earth-2 flyby. The data have been derived from SPICE kernels at a 1 minute sample rate. The data are provided in both Geocentric Solar Ecliptic (GSE) and Geocentric Solar Magnetic (GSM) coordinates and are given in units of earth radii (Re) where 1 Re = 6378 km. Data ==== ------------------------------------------------------------------ Table 1. Data record structure, ------------------------------------------------------------------ Column Units Description ------------------------------------------------------------------ time seconds S/C event time (UT) in the PDS format (yyyy-mm-ddThh:mm:ss.sss ) X Re S/C position X component in GSE or GSM coords. Y_gse Re S/C position Y component in GSE coords. Z_gse Re S/C position Z component in GSE coords. Y_gsm Re S/C position Y component in GSM coords. Z_gsm Re S/C position Z component in GSM coords. Coordinate Systems ================== The Galileo trajectory data are being archived in 2 coordinate systems. Geocentric Solar Ecliptic (GSE) and Geocentric Solar Magnetic (GSM) are related earth centered coordinate systems. Both the GSE and GSM X directions are taken along the Earth - Sun line, positive towards the Sun. The GSE Z direction is parallel to the ecliptic normal, positive northward, and Y completes the right-handed set (towards dusk). For GSM, the X-Z plane contains the Earth's dipole moment vector, positive northward, and Y completes the right-handed set. GSE coordinates are commonly used for analyzing the solar wind near the Earth and GSM coordinates are used when analyzing data inside the Earth's bow shock. Data Processing =============== The trajectory has been derived from the Galileo SPK kernel: 'S970311A.BSP' This kernel was obtained by the PDS-PPI node from the PDS-NAIF node. The code which produced the trajectory data was developed and executed at PDS-PPI. This code utilized SPICE routines which were developed at and distributed by PDS-NAIF. Both SPICE kernels and code may be available through PDS-NAIF.
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| DATA_SET_RELEASE_DATE |
2003-03-01T00:00:00.000Z
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| START_TIME |
1992-11-03T12:00:00.000Z
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| STOP_TIME |
1992-12-20T12:00:00.000Z
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| MISSION_NAME |
GALILEO
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| MISSION_START_DATE |
1977-10-01T12:00:00.000Z
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| MISSION_STOP_DATE |
2003-09-21T12:00:00.000Z
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| TARGET_NAME |
EARTH
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| TARGET_TYPE |
PLANET
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| INSTRUMENT_HOST_ID |
GO
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| INSTRUMENT_NAME |
N/A
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| INSTRUMENT_ID |
POS
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| INSTRUMENT_TYPE |
N/A
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| NODE_NAME |
planetary plasma interactions
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| ARCHIVE_STATUS |
ARCHIVED
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| CONFIDENCE_LEVEL_NOTE |
Confidence Level Overview ========================= The data have been derived from the Galileo SPICE kernels using well tested software from the SPICELIB and GLLSPICE subroutine libraries. Each data point is computed using S/C and planetary ephemerides computed at the time of the dataset sample (not interpolated).
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| CITATION_DESCRIPTION |
Joy, S.P., Mafi, J.N., GALILEO ORBITER EARTH POS EARTH2 FLYBY TRAJ V1.0, GO-E-POS-6-EARTH2-FLYBY-TRAJ-V1.0, NASA Planetary Data System, 2003
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| ABSTRACT_TEXT |
Galileo Orbiter 60 second sampled trajectory data from the Earth-2 flyby in GSE and GSM coordinates. These data cover the interval 1992-11-03 to 1992-12-20.
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| PRODUCER_FULL_NAME |
MARGARET G. KIVELSON
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| SEARCH/ACCESS DATA |
Planetary Plasma Interactions Website
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