version 2
Source: IERS Bulletin A (   0_   0_ )

Orbits: to be used with the IGS Rapid Service Orbits (IGR)

  MJD      Xpole   Ypole  UT1-UTC    LOD  Xsig  Ysig   UTsig  LODsig  Nr Nf Nt
             (10**-6")       (0.1 usec)    (10**-6")    (0.1 usec)  
51648.50   82244  343647  2623626  12051    32    35     112       0   0  0  0
51649.50   82512  343959  2611161  12879  2113  2110    1556       0   0  0  0
51650.50   82785  344187  2598229  12984  4650  4650    4024       0   0  0  0