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)  
51777.50   65436  243571  1970207   6251  2123  2108      51       0   0  0  0
51778.50   64105  243334  1964353   5456  4650  4650      54       0   0  0  0
51779.50   62815  243109  1959403   4444  5407  5407      90       0   0  0  0