 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 au  -na     29.616   54.255  0.7478
  
 covariance matrix (rad2/m.y.2 e-10
     220.6     137.8      69.4
     137.8     418.2     145.0
      69.4     145.0     381.8
  
