version 2
Source: IERS Bulletin A (   0_   0_ )

Orbits: to be used with the IGS Prediction Service Orbits (IGP)

  MJD      Xpole   Ypole  UT1-UTC    LOD  Xsig  Ysig   UTsig  LODsig  Nr Nf Nt
             (10**-6")       (0.1 usec)    (10**-6")    (0.1 usec)  
51633.50   72885  346273  2773855   5218  2139  2137    1562       0   0  0  0
51634.50   73055  345615  2768002   6487  4650  4650    4024       0   0  0  0
51635.50   73281  345000  2760645   8229  5407  5407    5946       0   0  0  0