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)  
51883.50  -81333  344530  1127834  12109  2194  2116      98       0   0  0  0
51884.50  -81725  346075  1115250  13059  4650  4650      79       0   0  0  0
51885.50  -82134  347579  1102035  13371  5407  5407      86       0   0  0  0