BULLETIN B 225 (IAU 2000) 3 november 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 2006 " " s s 0.001" 0.001" (0h UTC) Final Bulletin B values. SEP 1 53979 0.08252 0.25393 0.170025 -32.829975 0.13 -0.13 SEP 6 53984 0.07685 0.25424 0.167243 -32.832757 0.04 -0.21 SEP 11 53989 0.07086 0.25388 0.163810 -32.836190 -0.07 0.30 SEP 16 53994 0.06337 0.25185 0.159587 -32.840413 0.00 -0.11 SEP 21 53999 0.05427 0.25288 0.155491 -32.844509 0.09 0.04 SEP 26 54004 0.04333 0.25204 0.150914 -32.849086 0.19 -0.02 OCT 1 54009 0.03268 0.25236 0.145367 -32.854633 0.14 -0.11 Preliminary extension, to be updated weekly in Bulletin A and monthly in Bulletin B. OCT 6 54014 0.02528 0.25398 0.139201 -32.860799 0.06 -0.09 OCT 11 54019 0.01829 0.25759 0.131932 -32.868068 0.14 -0.32 OCT 16 54024 0.00849 0.25857 0.125244 -32.874756 0.03 -0.18 OCT 21 54029 0.00351 0.26277 0.119267 -32.880733 0.00 0.00 OCT 26 54034 -0.00184 0.26770 0.112663 -32.887337 0.00 0.00 OCT 31 54039 -0.00383 0.27140 0.106507 -32.893493 0.00 0.00 NOV 5 54044 -0.00624 0.27690 0.100689 -32.899311 0.00 0.00 NOV 10 54049 -0.01039 0.28197 0.095165 -32.904835 0.00 0.00 NOV 15 54054 -0.01496 0.28750 0.090099 -32.909901 0.00 0.00 NOV 20 54059 -0.01960 0.29348 0.085445 -32.914555 0.00 0.00 NOV 25 54064 -0.02413 0.29986 0.081188 -32.918812 0.00 0.00 NOV 30 54069 -0.02841 0.30657 0.077274 -32.922726 0.00 0.00 DEC 5 54074 -0.03237 0.31358 0.073681 -32.926319 0.00 0.00 DEC 10 54079 -0.03593 0.32084 0.070370 -32.929630 0.00 0.00 DEC 15 54084 -0.03906 0.32830 0.067303 -32.932697 0.00 0.00 DEC 20 54089 -0.04169 0.33593 0.064434 -32.935566 0.00 0.00 DEC 25 54094 -0.04380 0.34367 0.061749 -32.938251 0.00 0.00 DEC 30 54099 -0.04536 0.35149 0.059170 -32.940830 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 225 (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 2005 IERS Annual Report. 2006 MJD x y UT1-UTC UT1-UT1R D dX dY (0 h UTC) " " s ms ms 0.001" 0.001" SEP 1 53979 0.08252 0.25393 0.170186 0.161 0.081 0.13 -0.13 SEP 2 53980 0.08132 0.25402 0.170150 0.639 -0.002 0.15 -0.13 SEP 3 53981 0.07984 0.25408 0.170156 1.154 0.039 0.10 -0.26 SEP 4 53982 0.07836 0.25411 0.170029 1.588 0.229 0.05 -0.33 SEP 5 53983 0.07736 0.25412 0.169654 1.809 0.524 0.04 -0.27 SEP 6 53984 0.07685 0.25424 0.168954 1.711 0.893 0.04 -0.21 SEP 7 53985 0.07623 0.25454 0.167872 1.258 1.263 0.08 -0.24 SEP 8 53986 0.07515 0.25475 0.166468 0.517 1.519 0.15 -0.19 SEP 9 53987 0.07387 0.25462 0.164897 -0.356 1.582 0.16 0.06 SEP 10 53988 0.07247 0.25428 0.163369 -1.163 1.432 0.06 0.33 SEP 11 53989 0.07086 0.25388 0.162082 -1.728 1.152 -0.07 0.30 SEP 12 53990 0.06914 0.25353 0.161081 -1.954 0.853 -0.09 -0.02 SEP 13 53991 0.06741 0.25302 0.160360 -1.840 0.608 -0.01 -0.25 SEP 14 53992 0.06591 0.25236 0.159829 -1.466 0.421 0.05 -0.25 SEP 15 53993 0.06465 0.25192 0.159478 -0.947 0.305 0.03 -0.14 SEP 16 53994 0.06337 0.25185 0.159183 -0.404 0.298 0.00 -0.11 SEP 17 53995 0.06190 0.25192 0.158854 0.067 0.383 0.01 -0.17 SEP 18 53996 0.06030 0.25205 0.158401 0.401 0.558 0.03 -0.16 SEP 19 53997 0.05858 0.25242 0.157733 0.567 0.786 0.04 -0.05 SEP 20 53998 0.05652 0.25270 0.156834 0.562 0.922 0.06 0.06 SEP 21 53999 0.05427 0.25288 0.155901 0.410 1.039 0.09 0.04 SEP 22 54000 0.05177 0.25297 0.154774 0.159 1.187 0.14 -0.05 SEP 23 54001 0.04930 0.25282 0.153550 -0.125 1.212 0.18 -0.08 SEP 24 54002 0.04716 0.25262 0.152374 -0.375 1.125 0.22 -0.01 SEP 25 54003 0.04511 0.25238 0.151320 -0.524 1.000 0.23 0.04 SEP 26 54004 0.04333 0.25204 0.150387 -0.527 0.889 0.19 -0.02 SEP 27 54005 0.04174 0.25181 0.149546 -0.357 0.778 0.14 -0.10 SEP 28 54006 0.03984 0.25190 0.148826 -0.019 0.658 0.11 -0.10 SEP 29 54007 0.03752 0.25200 0.148214 0.451 0.593 0.13 -0.03 SEP 30 54008 0.03509 0.25209 0.147611 0.986 0.662 0.15 -0.03 OCT 1 54009 0.03268 0.25236 0.146853 1.486 0.789 0.14 -0.11 OCT 2 54010 0.03041 0.25257 0.145991 1.831 0.971 0.10 -0.17 OCT 3 54011 0.02844 0.25270 0.144878 1.907 1.290 0.04 -0.12 OCT 4 54012 0.02704 0.25308 0.143399 1.643 1.667 -0.02 -0.06 OCT 5 54013 0.02615 0.25362 0.141562 1.050 1.958 -0.02 -0.10 OCT 6 54014 0.02528 0.25398 0.139433 0.232 2.217 0.06 -0.09 OCT 7 54015 0.02438 0.25437 0.137195 -0.634 2.242 0.13 0.11 OCT 8 54016 0.02355 0.25498 0.135012 -1.351 2.053 0.09 0.38 OCT 9 54017 0.02231 0.25590 0.133125 -1.769 1.715 0.01 0.36 OCT 10 54018 0.02047 0.25688 0.131583 -1.833 1.374 0.03 0.00 OCT 11 54019 0.01829 0.25759 0.130349 -1.583 1.111 0.14 -0.32 OCT 12 54020 0.01571 0.25793 0.129318 -1.129 0.953 0.19 -0.30 OCT 13 54021 0.01313 0.25771 0.128399 -0.603 0.853 0.09 -0.08 OCT 14 54022 0.01129 0.25743 0.127579 -0.120 0.838 -0.03 0.02 OCT 15 54023 0.00990 0.25770 0.126703 0.240 0.945 -0.05 -0.08 OCT 16 54024 0.00849 0.25857 0.125682 0.438 1.071 0.03 -0.18 OCT 17 54025 0.00726 0.25954 0.124504 0.466 1.242 0.13 -0.12 OCT 18 54026 0.00624 0.26033 0.123208 0.343 1.362 0.22 0.06 OCT 19 54027 0.00526 0.26125 0.121796 0.110 1.461 0.27 0.14 OCT 20 54028 0.00423 0.26200 0.120308 -0.174 1.498 0.26 0.08 OCT 21 54029 0.00351 0.26277 0.118824 -0.443 1.478 0.00 0.00 OCT 22 54030 0.00300 0.26378 0.117372 -0.628 1.347 0.00 0.00 OCT 23 54031 0.00223 0.26476 0.116025 -0.676 1.288 0.00 0.00 OCT 24 54032 0.00104 0.26598 0.114803 -0.553 1.135 0.00 0.00 OCT 25 54033 -0.00054 0.26703 0.113752 -0.254 0.967 0.00 0.00 OCT 26 54034 -0.00184 0.26770 0.112855 0.192 0.828 0.00 0.00 OCT 27 54035 -0.00245 0.26829 0.112069 0.723 0.751 0.00 0.00 OCT 28 54036 -0.00286 0.26877 0.111319 1.250 0.768 0.00 0.00 OCT 29 54037 -0.00309 0.26940 0.110495 1.665 0.887 0.00 0.00 OCT 30 54038 -0.00333 0.27036 0.109512 1.862 1.102 0.00 0.00 OCT 31 54039 -0.00383 0.27140 0.108272 1.765 1.392 0.00 0.00 NOV 1 54040 -0.00408 0.27253 0.106723 1.353 1.706 0.00 0.00 NOV 2 54041 -0.00427 0.27378 0.104877 0.680 1.954 0.00 0.00 IERS, B 225 (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 dX dY x y UT1 dX dY (0 h UTC) " " s 0.001" 0.001" 0.0001s 0.001" SEP 1 53979 0.08252 0.25393 0.170182 0.064 -.137 0.01 0.01 0.02 0.03 0.03 SEP 6 53984 0.07687 0.25423 0.168954 0.028 -.175 0.02 0.02 0.02 0.02 0.02 SEP 11 53989 0.07086 0.25389 0.162082 -.080 0.319 0.02 0.02 0.02 0.02 0.03 SEP 16 53994 0.06337 0.25185 0.159178 0.073 -.110 0.01 0.01 0.02 0.05 0.06 SEP 21 53999 0.05426 0.25289 0.155906 0.135 0.046 0.02 0.01 0.02 0.02 0.03 SEP 26 54004 0.04336 0.25203 0.150395 0.208 -.051 0.02 0.01 0.02 0.02 0.03 OCT 1 54009 0.03267 0.25235 0.146855 0.154 -.138 0.01 0.01 0.01 0.02 0.02 OCT 6 54014 0.02527 0.25399 0.139428 0.035 0.012 0.02 0.02 0.02 0.05 0.05 OCT 11 54019 0.01830 0.25757 0.130346 0.145 -.344 0.01 0.02 0.02 0.02 0.03 OCT 16 54024 0.00848 0.25857 0.125681 0.022 -.175 0.01 0.02 0.02 0.02 0.03 OCT 21 54029 0.00351 0.26275 0.118822 - - 0.02 0.02 0.02 - - OCT 26 54034 -0.00184 0.26771 0.112853 - - 0.01 0.01 0.02 - - OCT 31 54039 -0.00384 0.27140 0.108277 - - 0.03 0.03 0.06 - - 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) SEP 1 53979 0.00051 72.921 15103 SEP 6 53984 0.00062 15094 SEP 11 53989 0.00075 15083 SEP 16 53994 0.00082 15077 SEP 21 53999 0.00083 15076 SEP 26 54004 0.00098 15064 OCT 1 54009 0.00124 15042 5 - INFORMATION ON TIME SCALES No leap second will be introduced in UTC on 31 December 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 225 (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 0.07 0.08 0.03 - - - 14 53979.27 to 54028.27 0.14 0.15 0.07 - - - EOP(BKG) 3 R 4 0.07 0.07 0.03 - - - 16 53979.27 to 54028.27 0.12 0.13 0.06 - - - EOP(BKG) 3 R 2 - - 0.13 - - - 51 53979.80 to 54039.79 - - 0.16 - - - EOP(USNO) 5 R 1 - - 0.14 - - - 52 53979.80 to 54038.79 - - 0.12 - - - EOP(GSFC) 6 R 1 - - 0.13 - - - 51 53979.80 to 54039.79 - - 0.17 - - - EOP(IAA) 5 R 2 0.08 0.08 0.04 - 0.06 0.06 15 53979.27 to 54028.27 0.13 0.14 0.09 - 0.11 0.13 EOP(IAA) 5 R 1 - - 0.14 - - - 50 53979.80 to 54038.79 - - 0.15 - - - EOP(SPBU) 3 R 3 0.26 0.32 0.17 - - - 12 53979.27 to 54028.27 0.21 0.11 0.11 - - - EOP(SPBU) 2 R 1 - - 0.14 - - - 50 53979.80 to 54038.79 - - 0.13 - - - EOP(MAO) 3 R 1 0.09 0.09 0.04 - 0.06 0.06 13 53979.32 to 54021.30 0.15 0.10 0.10 - 0.04 0.18 EOP(GSFC) 6 R 1 0.07 0.07 0.03 - - - 17 53979.27 to 54028.27 0.08 0.14 0.07 - - - EOP(USNO) 6 R 2 0.07 0.07 0.03 - - - 15 53979.27 to 54028.27 0.11 0.15 0.06 - - - EOP(IVS) 0 R 1 0.05 0.05 0.02 - - - 14 53979.00 to 54028.00 0.15 0.17 0.05 - - - GPS EOP(CODE) 98 P 1 0.01 0.01 - 0.08 - - 62 53979.50 to 54040.50 0.06 0.03 - 0.25 - - EOP(EMR) 96 P 3 0.03 0.03 - 0.04 - - 62 53979.50 to 54040.50 0.09 0.06 - 0.45 - - EOP(ESOC) 96 P 1 0.01 0.01 - 0.05 - - 52 53979.50 to 54030.50 0.04 0.07 - 0.59 - - EOP(GFZ) 96 P 2 0.01 0.01 - 0.02 - - 62 53979.50 to 54040.50 0.04 0.11 - 0.26 - - EOP(IAA) 1 P 1 0.03 0.03 - 0.06 - - 62 53979.50 to 54040.50 0.18 0.30 - 0.56 - - EOP(JPL) 96 P 3 0.02 0.02 - 0.15 - - 51 53979.50 to 54029.50 0.05 0.04 - 0.35 - - EOP(NOAA) 96 P 1 0.01 0.01 - 0.02 - - 54 53979.50 to 54032.50 0.11 0.13 - 0.29 - - EOP(SIO) 96 P 1 0.12 0.13 - 0.30 - - 60 53979.50 to 54038.50 0.05 0.35 - 0.29 - - EOP(IGS F)95 P 2 0.02 0.02 0.08 0.06 - - 44 53979.50 to 54022.50 0.03 0.08 0.21 0.20 - - EOP(IGS R)96 P 2 0.04 0.05 0.20 0.07 - - 62 53979.50 to 54040.50 0.07 0.06 0.52 0.22 - - EOP(IERS) 97 P 1 0.03 0.03 0.20 0.13 - - 62 53979.50 to 54040.50 0.03 0.02 0.34 0.27 - - SLR EOP(ASI) 3 L 2 0.06 0.06 - 0.15 - - 61 53979.50 to 54039.50 0.38 0.14 - 0.46 - - EOP(IAA) 2 L 1 0.03 0.03 0.02 0.02 - - 61 53979.00 to 54039.00 0.12 0.17 0.20 0.15 - - EOP(MCC) 97 L 1 0.15 0.16 - 0.10 - - 56 53979.00 to 54034.00 0.19 0.38 - 3.01 - - EOP(ILRS) 5 L 1 0.05 0.06 - 0.13 - - 58 53979.50 to 54036.50 0.12 0.15 - 0.58 - - Bulletin A EOP(NEOS) 97 C 1 0.04 0.06 0.06 - - - 63 53979.00 to 54041.00 0.04 0.08 0.20 - - -