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) 51682.50 91788 327460 2244998 8378 21 47 93 0 0 0 0 51683.50 92481 326779 2237421 6777 2108 2124 1541 0 0 0 0 51684.50 93102 326036 2231392 5280 4650 4650 4024 0 0 0 0