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)  
51853.50  -57991  289775  1400699  10875  2127  2119     162       0   0  0  0
51854.50  -58771  291084  1389137  12248  4650  4650     179       0   0  0  0
51855.50  -59608  292345  1376224  13579  5407  5407     241       0   0  0  0