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)  
51664.50   88436  337851  2455755  12622  5407  5407    5946       0   0  0  0
51665.50   88972  337373  2442438  14013  5953  5953    7669       0   0  0  0
51666.50   89437  336828  2428213  14436  6392  6392    9269       0   0  0  0