version 2
Source: IERS Bulletin A (2000_2000_2)

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)  
51889.50  -83691  354812  1056906   8548  2110  2132     143       0   0  0  0
51890.50  -83732  356247  1048885   7495  4650  4650     152       0   0  0  0
51891.50  -83818  357702  1041495   7284  5407  5407     128       0   0  0  0