version 2 Source: IERS Bulletin A (2000_2000_2) 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) 51681.50 91121 328091 2254244 9434 23 41 149 0 0 0 0 51682.50 91494 327299 2245655 7744 2111 2121 1575 0 0 0 0 51683.50 91815 326464 2238713 6140 4650 4650 4024 0 0 0 0