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)  
51643.50   78333  345228  2670367   7708  2117  2124    1560       0   0  0  0
51644.50   78738  344864  2663024   6979  4650  4650    4024       0   0  0  0
51645.50   79100  344431  2655979   7110  5407  5407    5946       0   0  0  0