 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 BU  -sr     -4.811  -76.774  2.1485
  
 covariance matrix (rad2/m.y.2 e-10
    3376.6    -307.2   -2159.6
    -307.2    3025.3     530.5
   -2159.6     530.5    5268.8
  
