BULLETIN B 216 (IAU 2000) 31 january 2006 ============================================================================== Following IAU Conventions 2000, IERS provides new products dX, dY, celestial pole offsets with respect to the new IAU2000A Precession-Nutation theory . The present Bulletin B version includes the celestial pole offsets dX, dY: dX = X_obs - X_IAU2000A and dY = Y_obs - Y_IAU2000A where X_obs, Y_obs are the observed coordinates of the Celestial Intermediate Pole (CIP) in the Geocentric Celestial Reference System, and X_IAU2000A, Y_IAU2000A are the celestial pole coordinates provided by using the IAU2000A Precession-Nutation theory. The current Bulletin B including (dpsi,deps)_1980 will be maintained as long as necessary. For more details refer to IERS Messages 38, on IAU 2000 Resolution Compliancy Information. ============================================================================== 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 dX dY 2005/06 " " s s 0.001" 0.001" (0h UTC) Final Bulletin B values. DEC 5 53709 0.06645 0.39063 -0.648796 -32.648796 0.42 -0.24 DEC 10 53714 0.06538 0.38970 -0.650520 -32.650520 0.17 -0.13 DEC 15 53719 0.06416 0.38751 -0.652800 -32.652800 0.27 -0.18 DEC 20 53724 0.06387 0.38904 -0.655712 -32.655712 0.45 -0.42 DEC 25 53729 0.06066 0.38697 -0.658743 -32.658743 0.24 -0.48 DEC 30 53734 0.05491 0.38468 -0.661412 -32.661412 0.24 -0.33 JAN 4 53739 0.05018 0.38244 0.336786 -32.663214 0.28 -0.34 Preliminary extension, to be updated weekly in Bulletin A and monthly in Bulletin B. JAN 9 53744 0.04951 0.38132 0.335329 -32.664671 0.14 -0.13 JAN 14 53749 0.04867 0.38004 0.333783 -32.666217 0.16 -0.31 JAN 19 53754 0.05071 0.38071 0.332304 -32.667696 0.00 0.00 JAN 24 53759 0.05025 0.38016 0.330224 -32.669776 0.00 0.00 JAN 29 53764 0.05110 0.38146 0.326243 -32.673757 0.00 0.00 FEB 3 53769 0.05030 0.38124 0.322140 -32.677860 0.00 0.00 FEB 8 53774 0.04790 0.37962 0.318150 -32.681850 0.00 0.00 FEB 13 53779 0.04483 0.37748 0.314243 -32.685757 0.00 0.00 FEB 18 53784 0.04141 0.37519 0.310276 -32.689724 0.00 0.00 FEB 23 53789 0.03782 0.37288 0.306179 -32.693821 0.00 0.00 FEB 28 53794 0.03415 0.37068 0.301914 -32.698086 0.00 0.00 MAR 5 53799 0.03048 0.36860 0.297459 -32.702541 0.00 0.00 MAR 10 53804 0.02685 0.36666 0.292835 -32.707165 0.00 0.00 MAR 15 53809 0.02330 0.36488 0.288090 -32.711910 0.00 0.00 MAR 20 53814 0.01986 0.36327 0.283222 -32.716778 0.00 0.00 MAR 25 53819 0.01656 0.36181 0.278294 -32.721706 0.00 0.00 MAR 30 53824 0.01341 0.36052 0.273334 -32.726666 0.00 0.00 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, dX, and dY. IERS, B 216 (2) 2 - SMOOTHED VALUES OF x, y, UT1, D, dX, dY (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. 2005/06 MJD x y UT1-UTC UT1-UT1R D dX dY (0 h UTC) " " s ms ms 0.001" 0.001" DEC 5 53709 0.06645 0.39063 -0.647748 1.047 0.189 0.42 -0.24 DEC 6 53710 0.06619 0.39079 -0.648017 1.143 0.401 0.38 -0.25 DEC 7 53711 0.06619 0.39080 -0.648554 0.961 0.664 0.31 -0.24 DEC 8 53712 0.06622 0.39062 -0.649325 0.524 0.876 0.25 -0.19 DEC 9 53713 0.06603 0.39025 -0.650267 -0.077 0.978 0.20 -0.17 DEC 10 53714 0.06538 0.38970 -0.651236 -0.716 0.946 0.17 -0.13 DEC 11 53715 0.06435 0.38891 -0.652118 -1.261 0.832 0.18 -0.11 DEC 12 53716 0.06347 0.38812 -0.652872 -1.608 0.674 0.22 -0.12 DEC 13 53717 0.06313 0.38764 -0.653456 -1.700 0.467 0.25 -0.16 DEC 14 53718 0.06343 0.38741 -0.653815 -1.534 0.238 0.26 -0.19 DEC 15 53719 0.06416 0.38751 -0.653955 -1.155 0.081 0.27 -0.18 DEC 16 53720 0.06476 0.38798 -0.654006 -0.643 0.026 0.33 -0.16 DEC 17 53721 0.06504 0.38864 -0.654037 -0.091 0.044 0.42 -0.19 DEC 18 53722 0.06515 0.38905 -0.654119 0.414 0.129 0.50 -0.31 DEC 19 53723 0.06486 0.38918 -0.654313 0.804 0.274 0.51 -0.42 DEC 20 53724 0.06387 0.38904 -0.654678 1.034 0.450 0.45 -0.42 DEC 21 53725 0.06286 0.38836 -0.655214 1.089 0.653 0.38 -0.32 DEC 22 53726 0.06238 0.38770 -0.655977 0.981 0.811 0.32 -0.24 DEC 23 53727 0.06185 0.38737 -0.656822 0.741 0.887 0.27 -0.28 DEC 24 53728 0.06126 0.38709 -0.657732 0.422 0.928 0.23 -0.41 DEC 25 53729 0.06066 0.38697 -0.658656 0.087 0.911 0.24 -0.48 DEC 26 53730 0.05955 0.38703 -0.659530 -0.194 0.822 0.28 -0.43 DEC 27 53731 0.05824 0.38691 -0.660278 -0.353 0.651 0.26 -0.37 DEC 28 53732 0.05710 0.38635 -0.660818 -0.332 0.410 0.21 -0.37 DEC 29 53733 0.05598 0.38553 -0.661099 -0.114 0.154 0.19 -0.40 DEC 30 53734 0.05491 0.38468 -0.661149 0.264 -0.009 0.24 -0.33 DEC 31 53735 0.05380 0.38391 -0.661124 0.701 -0.013 0.30 -0.17 JAN 1 53736 0.05271 0.38335 0.338829 1.059 0.124 0.30 -0.13 JAN 2 53737 0.05179 0.38302 0.338590 1.202 0.354 0.27 -0.26 JAN 3 53738 0.05097 0.38276 0.338108 1.050 0.606 0.27 -0.38 JAN 4 53739 0.05018 0.38244 0.337397 0.611 0.814 0.28 -0.34 JAN 5 53740 0.04961 0.38208 0.336521 -0.026 0.936 0.25 -0.20 JAN 6 53741 0.04950 0.38178 0.335577 -0.719 0.944 0.17 -0.09 JAN 7 53742 0.04957 0.38166 0.334678 -1.320 0.827 0.11 -0.05 JAN 8 53743 0.04951 0.38160 0.333951 -1.716 0.605 0.10 -0.07 JAN 9 53744 0.04951 0.38132 0.333479 -1.850 0.334 0.14 -0.13 JAN 10 53745 0.04958 0.38115 0.333276 -1.717 0.074 0.20 -0.23 JAN 11 53746 0.04927 0.38104 0.333310 -1.364 -0.129 0.20 -0.37 JAN 12 53747 0.04876 0.38070 0.333505 -0.863 -0.244 0.16 -0.42 JAN 13 53748 0.04854 0.38039 0.333769 -0.303 -0.267 0.13 -0.36 JAN 14 53749 0.04867 0.38004 0.334012 0.229 -0.180 0.16 -0.31 JAN 15 53750 0.04922 0.37978 0.334108 0.660 -0.047 0.23 -0.39 JAN 16 53751 0.04997 0.37970 0.334094 0.939 0.074 0.29 -0.54 JAN 17 53752 0.05043 0.37998 0.333958 1.045 0.237 0.31 -0.63 JAN 18 53753 0.05062 0.38038 0.333627 0.983 0.441 0.00 0.00 JAN 19 53754 0.05071 0.38071 0.333089 0.785 0.555 0.00 0.00 JAN 20 53755 0.05049 0.38097 0.332537 0.501 0.619 0.00 0.00 JAN 21 53756 0.05024 0.38118 0.331874 0.193 0.682 0.00 0.00 JAN 22 53757 0.05020 0.38131 0.331194 -0.073 0.673 0.00 0.00 JAN 23 53758 0.05024 0.38075 0.330548 -0.235 0.613 0.00 0.00 JAN 24 53759 0.05025 0.38016 0.329984 -0.241 0.525 0.00 0.00 JAN 25 53760 0.05014 0.38034 0.329502 -0.061 0.411 0.00 0.00 JAN 26 53761 0.05010 0.38064 0.329088 0.290 0.342 0.00 0.00 IERS, B 216 (3) 3 - NORMAL VALUES OF THE EARTH ORIENTATION PARAMETERS AT FIVE-DAY INTERVALS (IERS evaluation). Raw normal values Uncertainties 2005/06 MJD x y UT1-UTC dX dY x y UT1 dX dY (0 h UTC) " " s 0.001" 0.001" 0.0001s 0.001" DEC 5 53709 0.06646 0.39063 -0.647746 0.362 -.172 0.02 0.02 0.01 0.02 0.03 DEC 10 53714 0.06537 0.38969 -0.651236 0.192 -.252 0.01 0.01 0.01 0.03 0.03 DEC 15 53719 0.06417 0.38750 -0.653956 0.293 -.181 0.01 0.01 0.01 0.02 0.02 DEC 20 53724 0.06387 0.38904 -0.654676 0.403 -.430 0.02 0.02 0.02 0.04 0.04 DEC 25 53729 0.06067 0.38698 -0.658660 0.232 -.485 0.02 0.02 0.03 0.06 0.06 DEC 30 53734 0.05491 0.38469 -0.661147 0.224 -.351 0.02 0.02 0.02 0.03 0.03 JAN 4 53739 0.05018 0.38245 0.337400 0.305 -.385 0.01 0.01 0.02 0.02 0.02 JAN 9 53744 0.04952 0.38133 0.333485 0.138 -.128 0.01 0.01 0.02 0.04 0.04 JAN 14 53749 0.04867 0.38004 0.334012 0.159 -.316 0.01 0.02 0.01 0.03 0.03 JAN 19 53754 0.05071 0.38069 0.333095 - - 0.02 0.02 0.04 - - JAN 24 53759 0.05026 0.38016 0.329988 - - 0.02 0.02 0.04 - - 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 2005/06 MJD s (microrad/s) DEC 5 53709 0.00042 72.921 15111 DEC 10 53714 0.00034 15118 DEC 15 53719 0.00055 15101 DEC 20 53724 0.00060 15096 DEC 25 53729 0.00060 15096 DEC 30 53734 0.00043 15111 JAN 4 53739 0.00026 15125 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 216 (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. Units : 0.001" for x,y , 0.0001s for UT1, 0.001" for dX, dY. -------------------------------------------------------------------------------- EOP series Mean formal uncertainty Periods covered Weighted RMS agreement with Bulletin B -------------------------------------------------------------------------------- x y UT D dX dY Data Number VLBI EOP(AUS) 1 R 1 0.10 0.10 0.05 - - - 11 53710.20 to 53748.29 0.27 0.11 0.08 - - - EOP(BKG) 3 R 4 0.12 0.10 0.04 - - - 13 53710.20 to 53748.29 0.22 0.19 0.18 - - - EOP(BKG) 3 R 2 - - 0.11 - - - 38 53709.79 to 53760.79 - - 0.07 - - - EOP(USNO) 5 R 1 - - 0.15 - - - 40 53709.79 to 53760.79 - - 0.09 - - - EOP(GSFC) 4 R 2 0.15 0.10 0.11 - - - 16 53710.20 to 53752.17 0.11 0.13 0.13 - - - EOP(GSFC) 4 R 1 - - 0.12 - - - 38 53709.79 to 53760.79 - - 0.14 - - - EOP(IAA) 5 R 2 0.09 0.08 0.04 - 0.15 0.06 13 53710.20 to 53748.29 0.16 0.12 0.11 - 0.21 0.06 EOP(IAA) 5 R 1 - - 0.12 - - - 38 53709.79 to 53760.79 - - 0.09 - - - EOP(SPBU) 3 R 3 0.26 0.32 0.18 - - - 6 53710.20 to 53740.27 0.18 0.14 0.06 - - - EOP(SPBU) 2 R 1 - - 0.13 - - - 31 53709.79 to 53753.79 - - 0.16 - - - EOP(MAO) 3 R 1 0.11 0.09 0.05 - 0.17 0.06 10 53710.21 to 53740.29 0.18 0.23 0.12 - 0.22 0.12 EOP(USNO) 5 R 2 0.10 0.10 0.04 - - - 12 53710.20 to 53748.29 0.13 0.12 0.13 - - - EOP(IVS) 0 R 1 0.05 0.04 0.02 - - - 11 53710.00 to 53748.00 0.12 0.28 0.06 - - - GPS EOP(CODE) 98 P 1 0.01 0.01 - 0.06 - - 52 53709.50 to 53760.50 0.05 0.05 - 0.19 - - EOP(EMR) 96 P 3 0.03 0.03 - 0.04 - - 52 53709.50 to 53760.50 0.10 0.07 - 0.45 - - EOP(ESOC) 96 P 1 0.01 0.02 - 0.04 - - 52 53709.50 to 53760.50 0.07 0.07 - 0.57 - - EOP(GFZ) 96 P 2 0.01 0.01 - 0.02 - - 52 53709.50 to 53760.50 0.06 0.04 - 0.19 - - EOP(IAA) 1 P 1 0.03 0.03 - 0.06 - - 52 53709.50 to 53760.50 0.15 0.26 - 0.30 - - EOP(JPL) 96 P 3 0.02 0.02 - 0.11 - - 41 53709.50 to 53749.50 0.05 0.07 - 0.30 - - EOP(NOAA) 96 P 1 0.00 0.00 - 0.02 - - 51 53709.50 to 53759.50 0.09 0.13 - 0.33 - - EOP(SIO) 96 P 1 0.06 0.06 - 0.15 - - 52 53709.50 to 53760.50 0.06 0.08 - 0.30 - - EOP(IGS F)95 P 2 0.02 0.02 0.07 0.06 - - 41 53709.50 to 53749.50 0.03 0.09 0.20 0.15 - - EOP(IGS R)96 P 2 0.04 0.04 0.15 0.06 - - 52 53709.50 to 53760.50 0.06 0.07 0.51 0.17 - - EOP(IERS) 97 P 1 0.03 0.03 0.18 0.13 - - 52 53709.50 to 53760.50 0.02 0.03 0.80 0.18 - - SLR EOP(ASI) 3 L 2 0.08 0.09 - 0.21 - - 51 53709.50 to 53759.50 0.21 0.22 - 0.47 - - EOP(DUT) 98 L 1 0.10 0.09 - - - - 14 53715.00 to 53728.00 0.57 0.30 - - - - EOP(IAA) 2 L 1 0.04 0.04 0.03 0.03 - - 53 53709.00 to 53761.00 0.18 0.14 0.34 0.16 - - EOP(MCC) 97 L 1 0.10 0.11 - 0.10 - - 46 53709.00 to 53754.00 0.17 0.25 - 0.30 - - EOP(ILRS) 5 L 1 1.63 1.45 - 4.11 - - 48 53709.50 to 53756.50 0.16 0.16 - 0.49 - - Bulletin A EOP(NEOS) 97 C 1 0.05 0.07 0.07 - - - 53 53709.00 to 53761.00 0.06 0.13 0.17 - - -