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)  
51772.50   71710  243838  1997203   2750  2140  2119     123       0   0  0  0
51773.50   71081  243464  1993656   4344  4650  4650     117       0   0  0  0
51774.50   70354  243139  1988692   5585  5407  5407     135       0   0  0  0