BULLETIN B 221 4 july 2006 Contents are described in the Explanatory Supplement available at http://hpiers.obspm.fr/eop-pc/ 1 - EARTH ORIENTATION PARAMETERS (IERS evaluation). The values in this section are samplings of section 2 given at five-day intervals. Date MJD x y UT1R-UTC UT1R-TAI dPsi dEpsilon 2006 " " s s 0.001" 0.001" (0h UTC) Final Bulletin B values. MAY 4 53859 0.10967 0.35802 0.233268 -32.766732 -53.3 -6.7 MAY 9 53864 0.10803 0.35283 0.227233 -32.772767 -53.3 -5.8 MAY 14 53869 0.10860 0.34990 0.220867 -32.779133 -54.4 -6.3 MAY 19 53874 0.11137 0.34624 0.214775 -32.785225 -53.6 -6.6 MAY 24 53879 0.11365 0.34337 0.210180 -32.789820 -54.3 -6.0 MAY 29 53884 0.11843 0.33794 0.205918 -32.794082 -54.9 -6.3 JUN 3 53889 0.12168 0.33371 0.202762 -32.797238 -54.7 -6.0 Preliminary extension, to be updated weekly in Bulletin A and monthly in Bulletin B. JUN 8 53894 0.12317 0.32707 0.200417 -32.799583 -55.8 -5.7 JUN 13 53899 0.12448 0.31957 0.199542 -32.800458 -56.7 -6.2 JUN 18 53904 0.12634 0.31434 0.199033 -32.800967 -57.0 -5.7 JUN 23 53909 0.12498 0.30928 0.197778 -32.802222 -57.9 -5.4 JUN 28 53914 0.12631 0.30353 0.195578 -32.804422 -58.3 -5.9 JUL 3 53919 0.12906 0.29748 0.192473 -32.807527 -59.1 -5.2 JUL 8 53924 0.12875 0.29283 0.190552 -32.809448 -60.9 -5.5 JUL 13 53929 0.12773 0.28876 0.189858 -32.810142 -60.8 -5.5 JUL 18 53934 0.12561 0.28505 0.189842 -32.810158 -62.2 -5.5 JUL 23 53939 0.12276 0.28158 0.190308 -32.809692 -63.0 -5.5 JUL 28 53944 0.11938 0.27831 0.191078 -32.808922 -62.9 -5.3 AUG 2 53949 0.11559 0.27525 0.192032 -32.807968 -63.7 -5.0 AUG 7 53954 0.11148 0.27242 0.193039 -32.806961 -64.9 -5.9 AUG 12 53959 0.10705 0.26983 0.193993 -32.806007 -64.7 -5.2 AUG 17 53964 0.10237 0.26753 0.194809 -32.805191 -66.2 -5.5 AUG 22 53969 0.09746 0.26554 0.195404 -32.804596 -66.1 -6.0 AUG 27 53974 0.09233 0.26389 0.195724 -32.804276 -65.8 -4.5 Note. In UT1R, the effects of zonal tides with periods shorter than 35 days are removed ; UT1-UT1R (smaller than 0.0025s in absolute value) should be added after quadratic interpolation of UT1R. Section 2 of this Bulletin gives the daily interpolation of x, y, UT1, duration of day, dPsi, and dEpsilon. IERS, B 221 (2) 2 - SMOOTHED VALUES OF x, y, UT1, D, DPSI, DEPSILON (IERS EVALUATION) at one-day intervals. For smoothing characteristics, see Table2 in the explanatory supplement. The reference system is described in the 2004 IERS Annual Report. 2006 MJD x y UT1-UTC UT1-UT1R D dPsi dEpsilon (0 h UTC) " " s ms ms 0.001" 0.001" MAY 4 53859 0.10967 0.35802 0.233627 0.359 0.921 -53.3 -6.7 MAY 5 53860 0.10921 0.35690 0.232631 0.627 1.040 -53.2 -6.4 MAY 6 53861 0.10878 0.35561 0.231539 0.725 1.204 -53.1 -6.2 MAY 7 53862 0.10862 0.35436 0.230230 0.658 1.347 -53.1 -6.0 MAY 8 53863 0.10834 0.35352 0.228857 0.453 1.428 -53.1 -5.8 MAY 9 53864 0.10803 0.35283 0.227392 0.159 1.496 -53.3 -5.8 MAY 10 53865 0.10777 0.35219 0.225889 -0.159 1.515 -53.5 -5.9 MAY 11 53866 0.10754 0.35182 0.224387 -0.432 1.482 -53.8 -6.0 MAY 12 53867 0.10754 0.35150 0.222947 -0.590 1.372 -54.1 -6.1 MAY 13 53868 0.10787 0.35078 0.221657 -0.580 1.230 -54.3 -6.2 MAY 14 53869 0.10860 0.34990 0.220488 -0.379 1.049 -54.4 -6.3 MAY 15 53870 0.10970 0.34920 0.219544 -0.004 0.864 -54.4 -6.4 MAY 16 53871 0.11072 0.34865 0.218731 0.479 0.759 -54.3 -6.4 MAY 17 53872 0.11109 0.34798 0.217988 0.969 0.743 -54.0 -6.5 MAY 18 53873 0.11118 0.34713 0.217205 1.346 0.839 -53.8 -6.6 MAY 19 53874 0.11137 0.34624 0.216280 1.505 1.024 -53.6 -6.6 MAY 20 53875 0.11162 0.34551 0.215146 1.381 1.248 -53.4 -6.6 MAY 21 53876 0.11193 0.34509 0.213795 0.975 1.445 -53.5 -6.5 MAY 22 53877 0.11231 0.34468 0.212289 0.353 1.568 -53.7 -6.4 MAY 23 53878 0.11293 0.34418 0.210708 -0.361 1.587 -54.0 -6.2 MAY 24 53879 0.11365 0.34337 0.209166 -1.013 1.474 -54.3 -6.0 MAY 25 53880 0.11447 0.34226 0.207798 -1.468 1.248 -54.6 -5.9 MAY 26 53881 0.11523 0.34119 0.206688 -1.638 0.930 -54.9 -5.8 MAY 27 53882 0.11604 0.34011 0.205930 -1.513 0.583 -55.0 -5.9 MAY 28 53883 0.11720 0.33898 0.205492 -1.151 0.313 -55.0 -6.1 MAY 29 53884 0.11843 0.33794 0.205265 -0.653 0.176 -54.9 -6.3 MAY 30 53885 0.11940 0.33701 0.205105 -0.133 0.163 -54.8 -6.4 MAY 31 53886 0.12004 0.33626 0.204913 0.314 0.240 -54.8 -6.4 JUN 1 53887 0.12060 0.33545 0.204610 0.622 0.391 -54.7 -6.4 JUN 2 53888 0.12116 0.33466 0.204126 0.763 0.558 -54.7 -6.2 JUN 3 53889 0.12168 0.33371 0.203497 0.735 0.685 -54.7 -6.0 JUN 4 53890 0.12226 0.33247 0.202767 0.562 0.766 -54.6 -5.8 JUN 5 53891 0.12259 0.33117 0.201982 0.291 0.795 -54.7 -5.6 JUN 6 53892 0.12258 0.32983 0.201199 -0.022 0.761 -54.9 -5.5 JUN 7 53893 0.12274 0.32846 0.200482 -0.310 0.655 -55.3 -5.5 JUN 8 53894 0.12317 0.32707 0.199911 -0.506 0.467 -55.8 -5.7 JUN 9 53895 0.12344 0.32580 0.199564 -0.556 0.220 -56.3 -5.9 JUN 10 53896 0.12347 0.32455 0.199477 -0.422 -0.045 -56.6 -6.0 JUN 11 53897 0.12362 0.32303 0.199647 -0.108 -0.262 -56.7 -6.1 JUN 12 53898 0.12396 0.32131 0.199976 0.339 -0.377 -56.7 -6.2 JUN 13 53899 0.12448 0.31957 0.200363 0.821 -0.367 -56.7 -6.2 JUN 14 53900 0.12518 0.31810 0.200668 1.217 -0.223 -56.7 -6.1 JUN 15 53901 0.12571 0.31707 0.200775 1.407 0.001 -56.8 -6.1 JUN 16 53902 0.12601 0.31621 0.200653 1.320 0.313 -56.9 -5.9 JUN 17 53903 0.12620 0.31538 0.200159 0.950 0.625 -56.9 -5.8 JUN 18 53904 0.12634 0.31434 0.199396 0.362 0.816 -57.0 -5.7 JUN 19 53905 0.12640 0.31313 0.198533 -0.322 0.871 -57.2 -5.6 JUN 20 53906 0.12625 0.31200 0.197701 -0.962 0.777 -57.3 -5.5 JUN 21 53907 0.12601 0.31096 0.197017 -1.429 0.618 -57.5 -5.4 JUN 22 53908 0.12554 0.31012 0.196483 -1.639 0.402 -57.7 -5.4 JUN 23 53909 0.12498 0.30928 0.196211 -1.567 0.169 -57.9 -5.4 JUN 24 53910 0.12489 0.30820 0.196124 -1.251 -0.015 -58.3 -5.5 JUN 25 53911 0.12522 0.30699 0.196206 -0.776 -0.116 -58.4 -5.8 JUN 26 53912 0.12567 0.30580 0.196320 -0.247 -0.069 -58.3 -6.0 JUN 27 53913 0.12602 0.30466 0.196314 0.233 0.066 -58.3 -6.1 JUN 28 53914 0.12631 0.30353 0.196168 0.591 0.255 -58.3 -5.9 JUN 29 53915 0.12669 0.30232 0.195796 0.782 0.449 -58.4 -5.6 IERS, B 221 (3) 3 - NORMAL VALUES OF THE EARTH ORIENTATION PARAMETERS AT FIVE-DAY INTERVALS (IERS evaluation). Raw normal values Uncertainties 2006 MJD x y UT1-UTC dPsi dEps x y UT1 dPsi dEps (0 h UTC) " " s 0.001" 0.001" 0.0001s 0.001" MAY 4 53859 0.10966 0.35803 0.233615 -53.26 -6.64 0.02 0.02 0.02 0.07 0.03 MAY 9 53864 0.10803 0.35282 0.227397 -53.25 -5.86 0.01 0.01 0.02 0.05 0.03 MAY 14 53869 0.10860 0.34991 0.220484 -54.38 -6.32 0.02 0.02 0.02 0.09 0.04 MAY 19 53874 0.11137 0.34625 0.216283 -53.54 -6.63 0.01 0.01 0.02 0.06 0.03 MAY 24 53879 0.11366 0.34337 0.209167 -54.32 -5.97 0.02 0.02 0.02 0.05 0.02 MAY 29 53884 0.11842 0.33796 0.205267 -54.88 -6.27 0.01 0.01 0.02 0.04 0.02 JUN 3 53889 0.12168 0.33372 0.203499 -54.74 -6.05 0.01 0.01 0.02 0.07 0.03 JUN 8 53894 0.12317 0.32708 0.199912 -55.90 -5.67 0.01 0.01 0.01 0.04 0.02 JUN 13 53899 0.12448 0.31956 0.200364 -56.61 -6.26 0.02 0.02 0.02 0.07 0.04 JUN 18 53904 0.12634 0.31434 0.199390 - - 0.01 0.01 0.03 - - JUN 23 53909 0.12498 0.30928 0.196209 -57.81 -5.49 0.01 0.01 0.02 0.15 0.07 JUN 28 53914 0.12630 0.30354 0.196164 - - 0.01 0.02 0.03 - - 4 - DURATION OF THE DAY AND ANGULAR VELOCITY OF THE EARTH (IERS evaluation). The data of this section are smoothed, with the same characteristics as UT1R in section 1. They are corrected for the effects of zonal tides with periods up to 35 days. Section 2 gives the daily interpolation of D. Date (0h UTC) DR OmegaR 2006 MJD s (microrad/s) MAY 4 53859 0.00127 72.921 15039 MAY 9 53864 0.00118 15047 MAY 14 53869 0.00135 15033 MAY 19 53874 0.00105 15058 MAY 24 53879 0.00091 15070 MAY 29 53884 0.00071 15087 JUN 3 53889 0.00058 15097 5 - INFORMATION ON TIME SCALES A leap second was introduced in UTC on 31 December 2005. No leap second was introduced in UTC on 30 June 2006. All information concerning time scales : announcements of the leap seconds (Bulletin C) and of the value of DUT1 (Bulletin D) can be found in our web/ftp site : World Wide Web : http://hpiers.obspm.fr Anonymous ftp : hpiers.obspm.fr or 145.238.100.28 IERS, B 221 (4) 6 - SUMMARY OF CONTRIBUTED EARTH ORIENTATION PARAMETERS SERIES This section gives the average precision of the individual series contri- buting to the combination and their average agreement with it. The periods covered start at the beginning of the first month in Section 1 and end with the last available value in the individual series considered. The complete list of measurements is available in the electronic-mailed version of Bulletin B in section 7. Units : 0.001" for x,y , 0.0001s for UT1, 0.001" for dPsi, dEpsi. -------------------------------------------------------------------------------- EOP series Mean formal uncertainty Periods covered Weighted RMS agreement with Bulletin B -------------------------------------------------------------------------------- x y UT D dPsi dEps Data Number VLBI EOP(AUS) 1 R 1 0.07 0.07 0.04 - 0.15 0.07 14 53860.27 to 53909.27 0.11 0.14 0.05 - 0.48 0.13 EOP(BKG) 3 R 4 0.11 0.08 0.07 - 0.14 0.06 14 53860.27 to 53900.27 0.11 0.14 0.07 - 0.24 0.12 EOP(BKG) 3 R 2 - - 0.13 - - - 49 53859.79 to 53913.79 - - 0.26 - - - EOP(USNO) 5 R 1 - - 0.12 - - - 47 53859.79 to 53912.79 - - 0.19 - - - EOP(GSFC) 4 R 2 0.09 0.07 0.06 - 0.15 0.07 15 53860.27 to 53909.27 0.12 0.11 0.17 - 0.12 0.08 EOP(GSFC) 4 R 1 - - 0.14 - - - 49 53859.79 to 53913.79 - - 0.18 - - - EOP(IAA) 5 R 2 0.08 0.08 0.04 - - - 13 53860.27 to 53900.27 0.12 0.14 0.06 - - - EOP(IAA) 5 R 1 - - 0.12 - - - 49 53859.79 to 53913.79 - - 0.17 - - - EOP(SPBU) 3 R 3 0.29 0.36 0.18 - 0.07 0.03 13 53860.27 to 53900.27 0.18 0.18 0.14 - 0.13 0.08 EOP(SPBU) 2 R 1 - - 0.14 - - - 49 53859.79 to 53913.79 - - 0.25 - - - EOP(MAO) 3 R 1 0.09 0.09 0.04 - - - 12 53860.29 to 53900.31 0.09 0.20 0.07 - - - EOP(USNO) 6 R 1 0.08 0.08 0.04 - 0.15 0.07 13 53860.27 to 53900.27 0.11 0.11 0.06 - 0.12 0.08 EOP(IVS) 0 R 1 0.05 0.05 0.02 - 0.07 0.03 11 53860.00 to 53895.00 0.13 0.26 0.09 - 0.10 0.06 GPS EOP(CODE) 98 P 1 0.01 0.01 - 0.06 - - 56 53859.50 to 53914.50 0.06 0.06 - 0.20 - - EOP(EMR) 96 P 3 0.03 0.03 - 0.04 - - 56 53859.50 to 53914.50 0.07 0.06 - 0.50 - - EOP(ESOC) 96 P 1 0.01 0.01 - 0.04 - - 56 53859.50 to 53914.50 0.06 0.12 - 0.45 - - EOP(GFZ) 96 P 2 0.01 0.01 - 0.02 - - 56 53859.50 to 53914.50 0.06 0.05 - 0.23 - - EOP(IAA) 1 P 1 0.03 0.03 - 0.06 - - 56 53859.50 to 53914.50 0.17 0.23 - 0.65 - - EOP(JPL) 96 P 3 0.02 0.02 - 0.11 - - 52 53859.50 to 53910.50 0.04 0.03 - 0.34 - - EOP(SIO) 96 P 1 0.02 0.02 - 0.00 - - 56 53859.50 to 53914.50 0.05 0.28 - 0.22 - - EOP(IGS F)95 P 2 0.02 0.03 0.09 0.05 - - 45 53859.50 to 53903.50 0.02 0.08 0.17 0.14 - - EOP(IGS R)96 P 2 0.04 0.05 0.18 0.06 - - 56 53859.50 to 53914.50 0.06 0.05 0.60 0.17 - - EOP(IERS) 97 P 1 0.03 0.03 0.17 0.11 - - 56 53859.50 to 53914.50 0.02 0.02 0.65 0.19 - - SLR EOP(ASI) 3 L 2 0.06 0.06 - 0.13 - - 55 53859.50 to 53913.50 0.18 0.21 - 0.47 - - EOP(DUT) 98 L 1 0.09 0.10 - - - - 29 53859.00 to 53887.00 0.42 0.29 - - - - EOP(IAA) 2 L 1 0.03 0.03 0.02 0.02 - - 57 53859.00 to 53915.00 0.15 0.24 0.24 0.10 - - EOP(MCC) 97 L 1 0.13 0.15 - 0.10 - - 57 53859.00 to 53915.00 0.16 0.18 - 0.21 - - EOP(ILRS) 5 L 1 0.06 0.06 - 0.13 - - 52 53859.50 to 53910.50 0.14 0.14 - 0.40 - - Bulletin A EOP(NEOS) 97 C 1 0.04 0.05 0.08 - - - 57 53859.00 to 53915.00 0.03 0.10 0.17 - - -