RBSP Spacecraft Attitude tool



Time Range: to
Time Interval: seconds
Attitude Type:
Spacecraft: A B


The basic spacecraft attitude information, presented as quaternions,
Euler angles, or a transformation matrix, is given in J2000 coordinates.
Further information is given below.

The GSE coordinate system is defined as:

    Planetary Solar Ecliptic, Planet centered X=Sun, V2=Orbital normal.
    X      - Along the Planet->Sun line (S), positive towards the Sun.
    Y      - V2 x X
    Z      - Parallel to the Planetary orbital plane upward normal.

The GSM coordinate system is defined as:

    Geocentric Solar Magnetic, Planet centered X=Sun, 
    X      - Along the Planet->Sun line (S), positive towards the Sun.
    Y      - Z x X
    Z      - The component of the Earth's geomagnetic centered north dipole
             vector which is orthogonal to X.
             
    The GSM coordinate system uses a temporally changing dipole, as defined
    in the SPICE MAG Frame.

The Spacecraft UVW coordinate system has its UV axes rotated -35 degrees
from the XY axes about the Z (or W) axis. 

The Solar Ecliptic Spacecraft Axes Matrix is similar to the Planetary
Solar Ecliptic systems, with the X-Y plane in the Ecliptic.
The X-axis is defined by the intersection of the Ecliptic Plane
and the Earth's Dynamic Equator at the Jan. 1, 2000, epoch. That is, it is
the X-axis of the J2000 coordinate system. The Z-axis is the Ecliptic normal.
The GSQ coordinate system is Geocentric Solar Equatorial, defined as follows:

Geocentric Solar Equatorial, Earth centered Z=Omega, V2=Earth-Sun vector.
    X      - In the Earth->Sun plane, positive towards the Sun.
    Y      - Z x X
    Z      - Northward spin axis of Earth.

These coordinate systems are defined as they are for the Cassini mission. For more information, see Cassini Attitude.