BULLETIN B 217 2 march 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. JAN 4 53739 0.05018 0.38244 0.336786 -32.663214 -56.1 -1.6 JAN 9 53744 0.04951 0.38131 0.335326 -32.664674 -57.1 -1.3 JAN 14 53749 0.04867 0.38002 0.333778 -32.666222 -56.3 -2.1 JAN 19 53754 0.05072 0.38074 0.332318 -32.667682 -55.3 -1.3 JAN 24 53759 0.05030 0.38024 0.330221 -32.669778 -56.3 -2.1 JAN 29 53764 0.05115 0.38135 0.326324 -32.673676 -56.3 -2.3 FEB 3 53769 0.05025 0.38417 0.322391 -32.677609 -56.7 -2.2 Preliminary extension, to be updated weekly in Bulletin A and monthly in Bulletin B. FEB 8 53774 0.05143 0.38430 0.317919 -32.682081 -56.5 -2.9 FEB 13 53779 0.05737 0.38409 0.313308 -32.686692 -55.7 -2.6 FEB 18 53784 0.06422 0.38455 0.309233 -32.690767 -55.7 -2.2 FEB 23 53789 0.06764 0.38381 0.304745 -32.695255 -56.1 -3.2 FEB 28 53794 0.07203 0.38294 0.300045 -32.699955 -55.4 -3.2 MAR 5 53799 0.07388 0.38179 0.295151 -32.704849 -56.4 -3.2 MAR 10 53804 0.07487 0.38039 0.290611 -32.709389 -55.9 -4.4 MAR 15 53809 0.07519 0.37913 0.285919 -32.714081 -55.1 -3.5 MAR 20 53814 0.07536 0.37793 0.281105 -32.718895 -55.0 -4.2 MAR 25 53819 0.07545 0.37680 0.276222 -32.723778 -54.5 -4.9 MAR 30 53824 0.07554 0.37571 0.271324 -32.728676 -54.0 -4.5 APR 4 53829 0.07565 0.37465 0.266449 -32.733551 -55.3 -5.3 APR 9 53834 0.07580 0.37362 0.261665 -32.738335 -53.9 -5.4 APR 14 53839 0.07601 0.37261 0.257027 -32.742973 -53.9 -4.7 APR 19 53844 0.07624 0.37160 0.252579 -32.747421 -53.9 -5.7 APR 24 53849 0.07651 0.37059 0.248375 -32.751625 -52.8 -6.2 APR 29 53854 0.07680 0.36957 0.244469 -32.755531 -54.1 -5.4 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 217 (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" JAN 4 53739 0.05018 0.38244 0.337397 0.611 0.814 -56.1 -1.6 JAN 5 53740 0.04961 0.38208 0.336521 -0.026 0.936 -56.2 -1.5 JAN 6 53741 0.04950 0.38178 0.335577 -0.719 0.944 -56.5 -1.4 JAN 7 53742 0.04957 0.38166 0.334679 -1.320 0.828 -56.8 -1.3 JAN 8 53743 0.04951 0.38160 0.333951 -1.716 0.606 -57.0 -1.3 JAN 9 53744 0.04951 0.38131 0.333476 -1.850 0.334 -57.1 -1.3 JAN 10 53745 0.04958 0.38117 0.333275 -1.717 0.073 -57.1 -1.4 JAN 11 53746 0.04927 0.38105 0.333310 -1.364 -0.130 -57.0 -1.6 JAN 12 53747 0.04876 0.38071 0.333506 -0.863 -0.244 -56.8 -1.8 JAN 13 53748 0.04854 0.38036 0.333768 -0.303 -0.264 -56.6 -2.0 JAN 14 53749 0.04867 0.38002 0.334007 0.229 -0.181 -56.3 -2.1 JAN 15 53750 0.04921 0.37977 0.334111 0.660 -0.051 -56.1 -2.1 JAN 16 53751 0.04995 0.37969 0.334096 0.939 0.077 -55.9 -2.0 JAN 17 53752 0.05041 0.37997 0.333954 1.045 0.233 -55.6 -1.8 JAN 18 53753 0.05063 0.38041 0.333636 0.983 0.433 -55.5 -1.5 JAN 19 53754 0.05072 0.38074 0.333102 0.785 0.562 -55.3 -1.3 JAN 20 53755 0.05049 0.38098 0.332530 0.501 0.630 -55.3 -1.2 JAN 21 53756 0.05023 0.38121 0.331863 0.193 0.686 -55.3 -1.3 JAN 22 53757 0.05017 0.38126 0.331180 -0.073 0.672 -55.6 -1.5 JAN 23 53758 0.05024 0.38072 0.330540 -0.235 0.607 -55.9 -1.8 JAN 24 53759 0.05030 0.38024 0.329981 -0.241 0.517 -56.3 -2.1 JAN 25 53760 0.05021 0.38035 0.329509 -0.061 0.432 -56.6 -2.3 JAN 26 53761 0.05013 0.38057 0.329102 0.290 0.382 -56.8 -2.4 JAN 27 53762 0.05032 0.38071 0.328710 0.737 0.386 -56.8 -2.4 JAN 28 53763 0.05071 0.38098 0.328281 1.156 0.470 -56.6 -2.4 JAN 29 53764 0.05115 0.38135 0.327721 1.398 0.684 -56.3 -2.3 JAN 30 53765 0.05149 0.38170 0.326885 1.343 1.001 -56.0 -2.2 JAN 31 53766 0.05161 0.38229 0.325722 0.955 1.321 -55.8 -2.2 FEB 1 53767 0.05135 0.38306 0.324281 0.297 1.527 -55.9 -2.2 FEB 2 53768 0.05073 0.38370 0.322727 -0.486 1.583 -56.3 -2.2 FEB 3 53769 0.05025 0.38417 0.321173 -1.218 1.507 -56.7 -2.2 FEB 4 53770 0.05014 0.38453 0.319754 -1.748 1.274 -57.1 -2.2 FEB 5 53771 0.05041 0.38458 0.318641 -1.990 0.965 -57.3 -2.3 FEB 6 53772 0.05097 0.38443 0.317817 -1.932 0.700 -57.2 -2.4 FEB 7 53773 0.05129 0.38443 0.317219 -1.622 0.504 -57.0 -2.6 FEB 8 53774 0.05143 0.38430 0.316780 -1.139 0.374 -56.5 -2.9 FEB 9 53775 0.05269 0.38423 0.316439 -0.576 0.341 -56.1 -3.1 FEB 10 53776 0.05388 0.38442 0.316070 -0.023 0.410 -55.8 -3.2 FEB 11 53777 0.05505 0.38454 0.315596 0.445 0.516 -55.7 -3.1 FEB 12 53778 0.05636 0.38440 0.315024 0.770 0.679 -55.7 -2.9 FEB 13 53779 0.05737 0.38409 0.314232 0.924 0.847 -55.7 -2.6 FEB 14 53780 0.05819 0.38384 0.313334 0.904 0.940 -55.6 -2.4 FEB 15 53781 0.05901 0.38363 0.312366 0.736 0.999 -55.3 -2.4 FEB 16 53782 0.06039 0.38358 0.311355 0.470 1.067 -55.1 -2.4 FEB 17 53783 0.06210 0.38396 0.310255 0.170 1.120 -55.0 -2.5 FEB 18 53784 0.06422 0.38455 0.309139 -0.095 1.083 -55.7 -2.2 FEB 19 53785 0.06588 0.38490 0.308109 -0.261 1.006 -55.9 -2.4 FEB 20 53786 0.06688 0.38481 0.307140 -0.279 0.878 -56.1 -2.8 FEB 21 53787 0.06738 0.38459 0.306359 -0.117 0.661 -56.1 -3.2 FEB 22 53788 0.06748 0.38425 0.305810 0.219 0.454 -56.0 -3.3 FEB 23 53789 0.06764 0.38381 0.305425 0.680 0.358 -56.1 -3.2 IERS, B 217 (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" JAN 4 53739 0.05017 0.38245 0.337399 -56.11 -1.64 0.01 0.01 0.02 0.05 0.02 JAN 9 53744 0.04952 0.38133 0.333483 -57.12 -1.27 0.01 0.01 0.02 0.08 0.03 JAN 14 53749 0.04867 0.38003 0.334007 -56.16 -2.11 0.01 0.02 0.01 0.08 0.03 JAN 19 53754 0.05072 0.38074 0.333113 -55.25 -1.32 0.02 0.02 0.02 0.06 0.02 JAN 24 53759 0.05031 0.38025 0.329982 -56.33 -2.09 0.01 0.01 0.03 0.08 0.03 JAN 29 53764 0.05115 0.38135 0.327723 -56.24 -2.27 0.01 0.01 0.01 0.04 0.02 FEB 3 53769 0.05025 0.38418 0.321174 -56.68 -2.27 0.01 0.01 0.01 0.07 0.03 FEB 8 53774 0.05141 0.38432 0.316780 -56.53 -2.88 0.02 0.02 0.02 0.05 0.02 FEB 13 53779 0.05736 0.38408 0.314232 -55.69 -2.63 0.02 0.01 0.02 0.06 0.02 FEB 18 53784 0.06423 0.38455 0.309141 -55.52 -2.31 0.01 0.01 0.02 0.10 0.04 FEB 23 53789 0.06764 0.38381 0.305425 - - 0.02 0.02 0.02 - - 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) JAN 4 53739 0.00026 72.921 15125 JAN 9 53744 0.00034 15118 JAN 14 53749 0.00032 15120 JAN 19 53754 0.00032 15120 JAN 24 53759 0.00061 15095 JAN 29 53764 0.00080 15079 FEB 3 53769 0.00086 15074 5 - INFORMATION ON TIME SCALES A leap second was introduced in UTC on 31 December 2005. No leap second will be 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 217 (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 0.09 0.09 0.04 - 0.19 0.07 14 53739.21 to 53783.27 0.12 0.12 0.07 - 0.46 0.11 EOP(BKG) 3 R 4 0.09 0.08 0.04 - 0.14 0.05 14 53739.21 to 53783.27 0.14 0.22 0.12 - 0.22 0.08 EOP(BKG) 3 R 2 - - 0.12 - - - 41 53739.79 to 53788.79 - - 0.09 - - - EOP(USNO) 5 R 1 - - 0.12 - - - 44 53739.79 to 53788.79 - - 0.12 - - - EOP(GSFC) 4 R 2 0.12 0.07 0.07 - 0.20 0.06 15 53739.21 to 53783.27 0.08 0.15 0.04 - 0.11 0.05 EOP(GSFC) 4 R 1 - - 0.13 - - - 41 53739.79 to 53788.79 - - 0.15 - - - EOP(IAA) 5 R 2 0.08 0.07 0.04 - - - 14 53739.21 to 53783.27 0.08 0.12 0.12 - - - EOP(IAA) 5 R 1 - - 0.12 - - - 41 53739.79 to 53788.79 - - 0.09 - - - EOP(SPBU) 3 R 3 0.25 0.30 0.17 - 0.06 0.02 13 53740.27 to 53783.27 0.14 0.16 0.07 - 0.17 0.07 EOP(SPBU) 2 R 1 - - 0.13 - - - 40 53739.79 to 53788.79 - - 0.19 - - - EOP(MAO) 3 R 1 0.09 0.09 0.05 - - - 13 53739.23 to 53783.26 0.10 0.20 0.15 - - - EOP(USNO) 5 R 2 0.09 0.08 0.04 - 0.19 0.07 14 53739.21 to 53783.27 0.09 0.15 0.11 - 0.15 0.07 EOP(IVS) 0 R 1 0.04 0.04 0.02 - 0.09 0.03 12 53739.00 to 53776.00 0.17 0.33 0.05 - 0.10 0.05 GPS EOP(CODE) 98 P 1 0.01 0.01 - 0.07 - - 50 53739.50 to 53788.50 0.05 0.06 - 0.26 - - EOP(EMR) 96 P 3 0.03 0.03 - 0.04 - - 50 53739.50 to 53788.50 0.10 0.07 - 0.58 - - EOP(ESOC) 96 P 1 0.01 0.01 - 0.04 - - 50 53739.50 to 53788.50 0.06 0.07 - 0.62 - - EOP(GFZ) 96 P 2 0.01 0.01 - 0.02 - - 50 53739.50 to 53788.50 0.06 0.05 - 0.28 - - EOP(IAA) 1 P 1 0.03 0.03 - 0.06 - - 50 53739.50 to 53788.50 0.15 0.29 - 0.37 - - EOP(JPL) 96 P 3 0.02 0.02 - 0.12 - - 46 53739.50 to 53784.50 0.05 0.09 - 0.40 - - EOP(NOAA) 96 P 1 0.00 0.00 - 0.02 - - 49 53739.50 to 53787.50 0.10 0.13 - 0.29 - - EOP(SIO) 96 P 1 0.04 0.04 - 0.11 - - 25 53739.50 to 53763.50 0.05 0.09 - 0.33 - - EOP(IGS F)95 P 2 0.02 0.02 0.07 0.06 - - 39 53739.50 to 53777.50 0.02 0.09 0.19 0.23 - - EOP(IGS R)96 P 2 0.05 0.04 0.17 0.07 - - 50 53739.50 to 53788.50 0.05 0.06 0.53 0.21 - - EOP(IERS) 97 P 1 0.03 0.03 0.17 0.12 - - 50 53739.50 to 53788.50 0.02 0.03 0.30 0.26 - - SLR EOP(ASI) 3 L 2 0.07 0.08 - 0.19 - - 50 53739.50 to 53788.50 0.22 0.22 - 0.55 - - EOP(IAA) 2 L 1 0.04 0.04 0.02 0.02 - - 51 53739.00 to 53789.00 0.19 0.14 0.27 0.17 - - EOP(MCC) 97 L 1 0.15 0.17 - 0.10 - - 51 53739.00 to 53789.00 0.16 0.20 - 0.26 - - EOP(ILRS) 5 L 1 0.58 0.60 - 1.13 - - 50 53739.50 to 53788.50 0.18 0.14 - 0.61 - - Bulletin A EOP(NEOS) 97 C 1 0.04 0.06 0.06 - - - 51 53739.00 to 53789.00 0.05 0.11 0.13 - - -