There are two Galileo trajectory data sets included on this volume, one
in Jupiter centered coordinates and the other in Io centered coordinates.
The entire Jupiter Approach and Orbit 0 mission phases are (Nov 6, 1995 to
June 20, 1996) are covered in Jovian centered coordinates with one minute
sampling. The 30 minute interval between 17:30 and 18:00 UT on Dec 7, 1995
is provided at 20 second sampling in Io centered coordinates.
The spacecraft ephemeris data set in Jupiter centered coordinates,
"GO-J-POS-5-JAJ0JUPCRDSTRAJECT-V1.0", contains data from 3 different coordinate systems:
- System III (1965) - a spherical planetographic coordinate system.
- Jupiter Solar Equatorial (JSE) - a cartesian system defined by the jovian
spin axis (Z) and the Sun direction (X).
- Jupiter Solar Magnetospheric (JSM) - a cartesian system defined by the Sun
direction and the jovian centered dipole moment vector (M).
The spacecraft ephemeris data set in Io centered coordinates,
"GO-J-POS-5-J0IOCRDSTRAJECT-V1.0" is further subdivided into 2 different coordinate systems:
- Io, Phi=X, Omega (IPhiO) coordinates where the plasma corotation
direction (System III Phi) defines the X axis and the Jupiter spin
axis (Omega) defines the Z direction (Y points to Jupiter).
- Io planetocentric coordinates (IOCENTRC), a spherical coordinate system
using a planetocentric definition of latitude and longitude where
longitudes are measured in a right-handed sense from the Jupiter
facing meridian.
There are no Galileo (rotor) attitude or orientation data located here. Rotor
attitude data can be found in the GEOMETRY directory off of the root. Attitude data are provided in both SPICE "C" kernel format and as a ASCII tabular
listing (ROTOR.TAB).
Plots showing spacecraft trajectory have been included:
Io Encounter, IPhiO Coordinates: 3-panel Plot
Jupiter 0 Orbit, JSE Coordinates: X-Y plane X-Z plane
Return to the Data directory
Return to the AAREADME FILE
