| Cartesian State |
Cartesian position and velocity components in the following order:
x-position, y-position, z-position, x-velocity, y-velocity, and z-velocity. |
| Equinox |
Vernal equinox. For the planets, the vernal equinox is defined as the axis
from the center of the planet to the ascending node of the planet’s orbit through the
planet’s equatorial plane. |
| Jupiter System I |
This prime meridian system is identified with the Prime Meridian rotation
of the visible features in the Jovian equatorial zone. The exact definition of this system
can be found in the Explanatory Supplement to the Astronomical Ephemeris and The American
Ephemeris and Nautical Almanac (Explanatory Supplement to the Ephemeris). JPL Technical
Report (TR) 32-12508, dated January 15, 1971. |
| Jupiter System III |
This prime meridian system is identified with the Prime Meridian rotation
of radio emissions from Jupiter. This rotation probably corresponds to the rotation of the
Jovian inner core which is associated with the planet’s magnetic field. The SEDR uses
Jupiter System III (1965.0). |
| Longitude |
The longitude convention will conform to the IAU standards which specify
positive west longitudes for Jupiter. |
| BPI |
Bits per inch |
| CDFGEN |
Common Data File Generation (program) |
| deg |
Degrees |
| DEC |
Declination |
| DMT |
Data Management Team |
| DOY |
Day of Year |
| DPTRAJ |
Double Precision Trajectory program |
| DRS |
Data Records System |
| DUT |
Difference between ET and UTC times (55.2 for 1 July 1985) |
| E |
Floating Point Quantity |
| ECL50 |
Earth Mean Ecliptic and Equinox of 1950.0 |
| EME50 |
Earth Mean Equator and Equinox of 1950.0 |
| ERT |
Earth Received Time |
| ESOC |
European Space Operations Centre |
| ET |
Ephemeris Time |
| HHMMSS |
Hours-Minutes-Seconds |
| HEX |
Hexadecimal Number |
| I |
Integer Quantity |
| IAU |
International Astronomical Union |
| ID |
Identification |
| IPC |
Information Processing Center |
| IRG |
Inter-record Gap |
| JPL |
Jet Propulsion Laboratory |
| km |
Kilometers |
| km/sec |
Kilometers Per Second |
| N/A |
Not Applicable or Not Available |
| NAV |
Navigation System or Team |
| P-File |
Probe Ephemeris File |
| PI |
Principal Investigator |
| RA |
Right Ascension |
| S/C |
Spacecraft |
| SCET |
Spacecraft Event Time |
| SCLK |
Spacecraft Clock (count) |
| SEDR |
Supplementary Experiment Data Records |
| SEDRGEN |
Supplementary Experiment Data Records Generation (program) |
| SFDU |
Standard Formatted Data Unit (headers) |
| SIS |
Software Interface Specification |
| SRD |
Software Requirements Document |
| TBD |
To Be Determined |
| TBS |
To Be Supplied |
| TCM |
Trajectory Correction Maneuver |
| UTC |
coordinated Universal Time |
| YYDDD |
Year (last two digits) - day of year |
Updated 11/22/02, T. Hunt-Ward
