|Date of Launch:|
|17 March 2009|
|Mission ended on 11 November 2013|
Provides calibrated attitude quaternions from the GOCE Star Tracker instrument. MDS from the first of the three available STR head.
Quaternions define the attitude of the active star sensor active corrected for the orbital relativistic aberration error at a time in the Inertial Reference Frame and computed on-board by the star sensor electronics.