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)  
51726.50  109989  279229  2041871    -58  2123  2123    1561       0   0  0  0
51727.50  109747  277791  2041982   -164  4650  4650    4024       0   0  0  0
51728.50  109428  276454  2041899    331  5407  5407    5946       0   0  0  0