Data Set Information
DATA_SET_NAME GALILEO EARTH2 TRAJECTORY V1.0
DATA_SET_ID GO-E-POS-6-SUMM-E2-GSE/GSM-COORDS-V1.0
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION Dataset 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 where 1 Re = 6378 km. Data Columns: time S/C event time (UT) given in seconds since 1966 scet S/C event time (UT) given in the form yyyy ddd mon day hh:mm:ss.sss X S/C position X component in GSE or GSM coordinate Y_gse S/C position Y component in GSE coordinates Z_gse S/C position Z component in GSE coordinates Y_gsm S/C position Y component in GSM coordinates Z_gsm S/C position Z component in GSM coordinates 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 =============== These data have been derived from the PDS dataset: 'GO-J-SPICE-6-SPK-E2-V1.0' The SPK file used to dervied this product was: 'GLL920818.SPK' Data Quality ============ 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).
DATA_SET_RELEASE_DATE 1995-04-18T00:00:00.000Z
START_TIME 1992-11-03T12:00:00.000Z
STOP_TIME 1990-12-19T12:00:00.000Z
MISSION_NAME GALILEO
MISSION_START_DATE 1977-10-01T12:00:00.000Z
MISSION_STOP_DATE 2003-09-21T12:00:00.000Z
TARGET_NAME EARTH
TARGET_TYPE PLANET
INSTRUMENT_HOST_ID GO
INSTRUMENT_NAME DUAL TECHNIQUE MAGNETOMETER
TRIAXIAL FLUXGATE MAGNETOMETER
MAGNETOMETER
FLUXGATE MAGNETOMETER
INSTRUMENT_ID MAG
INSTRUMENT_TYPE MAGNETOMETER
Magnetometer
NODE_NAME planetary plasma interactions
ARCHIVE_STATUS ARCHIVED
CONFIDENCE_LEVEL_NOTE NONE PROVIDED
CITATION_DESCRIPTION GALILEO EARTH2 TRAJECTORY V1.0, GO-E-POS-6-SUMM-E2-GSE/GSM-COORDS-V1.0, NASA Planetary Data System, 1995
ABSTRACT_TEXT 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 where 1 Re = 6378 km.
PRODUCER_FULL_NAME DR. MARGARET G. KIVELSON
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