Navigation system
Inertial Navigation
Gyroscopes and accelerometers in an inertial measurement unit that sense a spacecraft's rotation and acceleration, propagating its orientation between star-tracker updates and through manoeuvres when other references are unavailable.
Related
Sources
The primary and reference sources this topic draws on.
- NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.
- NASA JPLJet Propulsion Laboratory / Solar System Dynamics
Orbital data, ephemerides, and small-body parameters for planets, asteroids, and comets.