:: Disturbing torques
- External: gravitational gradients, solar pressure, magnetic, dragging etc.
- Internal: misalignments, movements of appendages, movements of liquids, etc.
- Secular

:: Sensors and actuators
- Types of sensors (Earth, Sun, stellar, inertial, magnetic, GPS)
- Types of passive actuators (rotation, gravity, magnetic, shock absorbers)
- Types of active actuators (reaction wheels, gyros, propellers, magnetic torque rods)