BULLETIN B 251 9 January 2009 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 2008/09 " " s s 0.001" 0.001" (0h UTC) Final Bulletin B values. NOV 4 54774 0.17327 0.14779 -0.528813 -33.528813 -65.5 -6.1 NOV 9 54779 0.15770 0.14305 -0.533797 -33.533797 -65.6 -5.6 NOV 14 54784 0.13829 0.13802 -0.539713 -33.539713 -65.2 -5.6 NOV 19 54789 0.12056 0.13516 -0.545540 -33.545540 -65.1 -5.3 NOV 24 54794 0.11090 0.13669 -0.552668 -33.552668 -64.9 -4.8 NOV 29 54799 0.09512 0.13597 -0.560292 -33.560292 -63.9 -5.0 DEC 4 54804 0.07597 0.13513 -0.566927 -33.566927 -63.4 -4.6 Preliminary extension, to be updated weekly in Bulletin A and monthly in Bulletin B. DEC 9 54809 0.05907 0.13435 -0.572928 -33.572928 -64.0 -4.8 DEC 14 54814 0.04474 0.13438 -0.578247 -33.578247 -62.6 -4.2 DEC 19 54819 0.03051 0.13610 -0.583221 -33.583221 -62.8 -4.6 DEC 24 54824 0.01450 0.13908 -0.587898 -33.587898 -62.7 -4.2 DEC 29 54829 -0.00527 0.14313 -0.591829 -33.591829 -62.2 -4.0 JAN 3 54834 -0.02326 0.14908 0.403911 -33.596089 -61.9 -3.9 JAN 8 54839 -0.04165 0.15797 0.399319 -33.600681 -63.0 -3.8 JAN 13 54844 -0.05980 0.16756 0.394792 -33.605208 -61.5 -3.9 JAN 18 54849 -0.07623 0.17779 0.390478 -33.609522 -62.2 -4.2 JAN 23 54854 -0.09000 0.18873 0.386181 -33.613819 -62.1 -4.6 JAN 28 54859 -0.10373 0.20177 0.381860 -33.618140 -61.4 -4.1 FEB 2 54864 -0.11675 0.21462 0.377444 -33.622556 -61.7 -4.5 FEB 7 54869 -0.12886 0.22785 0.372931 -33.627069 -62.8 -5.1 FEB 12 54874 -0.13831 0.24235 0.368302 -33.631698 -60.9 -4.9 FEB 17 54879 -0.14526 0.25743 0.363528 -33.636472 -62.0 -5.4 FEB 22 54884 -0.15221 0.27310 0.358635 -33.641365 -61.3 -5.9 FEB 27 54889 -0.15714 0.29026 0.353590 -33.646410 -61.1 -5.7 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 251 (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 2007 IERS Annual Report. 2008/09 MJD x y UT1-UTC UT1-UT1R D dPsi dEpsilon (0 h UTC) " " s ms ms 0.001" 0.001" NOV 4 54774 0.17327 0.14779 -0.527594 1.219 0.667 -65.5 -6.1 NOV 5 54775 0.16976 0.14677 -0.528309 1.548 0.777 -65.3 -6.2 NOV 6 54776 0.16650 0.14566 -0.529157 1.692 0.940 -65.3 -6.0 NOV 7 54777 0.16378 0.14479 -0.530193 1.627 1.134 -65.4 -5.8 NOV 8 54778 0.16089 0.14392 -0.531430 1.353 1.348 -65.4 -5.6 NOV 9 54779 0.15770 0.14305 -0.532888 0.909 1.560 -65.6 -5.6 NOV 10 54780 0.15405 0.14229 -0.534515 0.371 1.658 -65.8 -5.6 NOV 11 54781 0.15027 0.14119 -0.536181 -0.150 1.635 -66.0 -5.7 NOV 12 54782 0.14671 0.14033 -0.537793 -0.535 1.510 -65.9 -5.6 NOV 13 54783 0.14257 0.13941 -0.539203 -0.692 1.268 -65.7 -5.6 NOV 14 54784 0.13829 0.13802 -0.540313 -0.600 0.990 -65.2 -5.6 NOV 15 54785 0.13449 0.13690 -0.541174 -0.319 0.799 -64.8 -5.6 NOV 16 54786 0.13089 0.13620 -0.541930 0.027 0.822 -64.7 -5.4 NOV 17 54787 0.12695 0.13581 -0.542777 0.299 0.964 -65.0 -5.2 NOV 18 54788 0.12326 0.13548 -0.543872 0.389 1.226 -65.2 -5.2 NOV 19 54789 0.12056 0.13516 -0.545278 0.262 1.565 -65.1 -5.3 NOV 20 54790 0.11851 0.13522 -0.546943 -0.054 1.761 -64.7 -5.3 NOV 21 54791 0.11696 0.13555 -0.548767 -0.479 1.853 -64.5 -5.1 NOV 22 54792 0.11539 0.13606 -0.550641 -0.918 1.866 -64.6 -5.0 NOV 23 54793 0.11333 0.13632 -0.552471 -1.282 1.759 -64.7 -4.9 NOV 24 54794 0.11090 0.13669 -0.554173 -1.505 1.609 -64.9 -4.8 NOV 25 54795 0.10787 0.13738 -0.555703 -1.546 1.460 -64.9 -4.7 NOV 26 54796 0.10440 0.13723 -0.557076 -1.392 1.308 -64.8 -4.6 NOV 27 54797 0.10122 0.13661 -0.558317 -1.058 1.155 -64.5 -4.7 NOV 28 54798 0.09831 0.13628 -0.559388 -0.586 1.022 -64.1 -4.9 NOV 29 54799 0.09512 0.13597 -0.560327 -0.034 0.924 -63.9 -5.0 NOV 30 54800 0.09165 0.13566 -0.561193 0.525 0.874 -63.6 -4.9 DEC 1 54801 0.08821 0.13540 -0.562085 1.023 0.928 -63.4 -4.9 DEC 2 54802 0.08464 0.13527 -0.563062 1.399 1.037 -63.4 -4.9 DEC 3 54803 0.08051 0.13519 -0.564125 1.609 1.104 -63.4 -4.8 DEC 4 54804 0.07597 0.13513 -0.565297 1.630 1.246 -63.4 -4.6 DEC 5 54805 0.07178 0.13529 -0.566652 1.459 1.463 -63.4 -4.4 DEC 6 54806 0.06810 0.13540 -0.568190 1.123 1.609 -63.4 -4.3 DEC 7 54807 0.06462 0.13522 -0.569830 0.676 1.689 -63.5 -4.5 DEC 8 54808 0.06148 0.13466 -0.571519 0.203 1.647 -63.7 -4.8 DEC 9 54809 0.05907 0.13435 -0.573120 -0.192 1.482 -64.0 -4.8 DEC 10 54810 0.05667 0.13492 -0.574492 -0.415 1.261 -64.1 -4.7 DEC 11 54811 0.05364 0.13507 -0.575616 -0.414 0.989 -64.0 -4.6 DEC 12 54812 0.05045 0.13462 -0.576487 -0.207 0.756 -63.5 -4.6 DEC 13 54813 0.04724 0.13450 -0.577154 0.108 0.677 -62.8 -4.5 DEC 14 54814 0.04474 0.13438 -0.577854 0.393 0.805 -62.6 -4.2 DEC 15 54815 0.04279 0.13456 -0.578771 0.517 1.059 -62.9 -4.1 DEC 16 54816 0.04011 0.13496 -0.579921 0.407 1.270 -63.3 -4.3 DEC 17 54817 0.03685 0.13513 -0.581253 0.074 1.380 -63.4 -4.7 DEC 18 54818 0.03367 0.13553 -0.582686 -0.402 1.444 -63.1 -4.8 DEC 19 54819 0.03051 0.13610 -0.584131 -0.910 1.447 -62.8 -4.6 DEC 20 54820 0.02749 0.13663 -0.585508 -1.343 1.333 -62.7 -4.2 DEC 21 54821 0.02444 0.13742 -0.586727 -1.625 1.113 -62.8 -4.1 DEC 22 54822 0.02119 0.13821 -0.587740 -1.715 0.913 -62.7 -4.1 DEC 23 54823 0.01789 0.13875 -0.588574 -1.602 0.734 -62.7 -4.1 DEC 24 54824 0.01450 0.13908 -0.589201 -1.303 0.531 -62.7 -4.2 DEC 25 54825 0.01081 0.13953 -0.589583 -0.855 0.339 -62.7 -4.3 DEC 26 54826 0.00669 0.13996 -0.589804 -0.314 0.224 -62.7 -4.4 DEC 27 54827 0.00280 0.14054 -0.590023 0.252 0.239 -62.7 -4.5 DEC 28 54828 -0.00105 0.14177 -0.590302 0.772 0.296 -62.5 -4.3 DEC 29 54829 -0.00527 0.14313 -0.590648 1.181 0.392 -62.2 -4.0 DEC 30 54830 -0.00964 0.14420 -0.591120 1.434 0.558 -61.9 -3.8 DEC 31 54831 -0.01346 0.14511 -0.591828 1.504 0.803 -61.7 -3.8 JAN 1 54832 -0.01701 0.14624 0.407173 1.392 1.058 -61.8 -3.8 JAN 2 54833 -0.02044 0.14754 0.405979 1.124 1.233 -61.8 -3.8 JAN 3 54834 -0.02326 0.14908 0.404662 0.750 1.318 -61.9 -3.9 JAN 4 54835 -0.02577 0.15072 0.403326 0.342 1.335 -61.9 -4.0 JAN 5 54836 -0.02901 0.15268 0.402097 -0.016 1.266 -62.0 -4.1 JAN 6 54837 -0.03329 0.15458 0.400949 -0.238 1.093 -62.2 -4.0 JAN 7 54838 -0.03753 0.15623 0.399971 -0.266 0.859 -62.6 -3.9 JAN 8 54839 -0.04165 0.15797 0.399225 -0.094 0.656 -63.0 -3.8 JAN 9 54840 -0.04566 0.15973 0.398580 0.214 0.541 -63.0 -4.0 JAN 10 54841 -0.04926 0.16158 0.397986 0.539 0.580 -62.6 -4.2 JAN 11 54842 -0.05263 0.16359 0.397292 0.741 0.757 -62.0 -4.1 JAN 12 54843 -0.05612 0.16567 0.396381 0.714 1.012 -61.6 -3.9 JAN 13 54844 -0.05980 0.16756 0.395219 0.427 1.258 -61.5 -3.9 JAN 14 54845 -0.06348 0.16949 0.393863 -0.066 1.416 -61.4 -4.2 JAN 15 54846 -0.06705 0.17166 0.392413 -0.650 1.444 -61.3 -4.3 JAN 16 54847 -0.07038 0.17372 0.391007 -1.194 1.348 -61.6 -4.3 JAN 17 54848 -0.07340 0.17569 0.389746 -1.592 1.167 -61.9 -4.2 JAN 18 54849 -0.07623 0.17779 0.388695 -1.783 0.948 -62.2 -4.2 JAN 19 54850 -0.07897 0.17987 0.387868 -1.751 0.730 -62.2 -4.3 JAN 20 54851 -0.08171 0.18191 0.387247 -1.511 0.542 -62.1 -4.4 JAN 21 54852 -0.08449 0.18413 0.386797 -1.104 0.402 -62.1 -4.4 JAN 22 54853 -0.08720 0.18643 0.386455 -0.584 0.324 -62.2 -4.5 JAN 23 54854 -0.09000 0.18873 0.386161 -0.020 0.318 -62.1 -4.6 IERS, B 251 (3) 3 - NORMAL VALUES OF THE EARTH ORIENTATION PARAMETERS AT FIVE-DAY INTERVALS (IERS evaluation). Raw normal values Uncertainties 2008/09 MJD x y UT1-UTC dPsi dEps x y UT1 dPsi dEps (0 h UTC) " " s 0.001" 0.001" 0.0001s 0.001" NOV 4 54774 0.17327 0.14777 -0.527591 -65.57 -6.14 0.01 0.01 0.01 0.04 0.03 NOV 9 54779 0.15769 0.14302 -0.532882 -65.79 -5.50 0.01 0.01 0.01 0.06 0.05 NOV 14 54784 0.13829 0.13798 -0.540311 -65.19 -5.62 0.01 0.01 0.02 0.08 0.06 NOV 19 54789 0.12056 0.13514 -0.545269 -65.09 -5.27 0.01 0.01 0.02 0.15 0.12 NOV 24 54794 0.11089 0.13666 -0.554169 -65.08 -4.76 0.01 0.01 0.01 0.09 0.06 NOV 29 54799 0.09512 0.13595 -0.560330 -64.24 -4.67 0.01 0.01 0.05 0.08 0.06 DEC 4 54804 0.07597 0.13510 -0.565295 -63.40 -4.58 0.01 0.01 0.01 0.08 0.05 DEC 9 54809 0.05906 0.13433 -0.573115 -64.18 -4.75 0.01 0.01 0.01 0.08 0.06 DEC 14 54814 0.04473 0.13436 -0.577852 -62.63 -4.21 0.02 0.01 0.01 0.07 0.05 DEC 19 54819 0.03051 0.13607 -0.584127 -62.87 -4.57 0.01 0.01 0.02 0.14 0.12 DEC 24 54824 0.01450 0.13905 -0.589220 - - 0.01 0.01 0.02 - - DEC 29 54829 -0.00530 0.14309 -0.590670 - - 0.02 0.02 0.05 - - JAN 3 54834 -0.02327 0.14905 0.404667 - - 0.02 0.01 0.06 - - JAN 8 54839 -0.04172 0.15797 0.399186 - - 0.02 0.02 0.07 - - 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 2008 MJD s (microrad/s) NOV 4 54774 0.00108 72.921 15056 NOV 9 54779 0.00106 15057 NOV 14 54784 0.00120 15046 NOV 19 54789 0.00134 15034 NOV 24 54794 0.00148 15022 NOV 29 54799 0.00150 15020 DEC 4 54804 0.00117 15048 5 - INFORMATION ON TIME SCALES A leap second was introduced in UTC on 31 December 2008. 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 251 (4) 6 - SUMMARY OF CONTRIBUTED EARTH ORIENTATION PARAMETERS SERIES This section gives the average precision of the various series with respect to the combination 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 0.09 0.03 - 0.15 0.07 9 54774.21 to 54802.21 0.18 0.17 0.14 - 0.28 0.11 EOP(BKG) 8 R 2 0.07 0.07 0.04 - 0.13 0.06 4 54774.21 to 54784.27 0.17 0.10 0.08 - 0.13 0.05 EOP(BKG) 3 R 2 - - 0.07 - - - 30 54775.79 to 54803.79 - - 0.11 - - - EOP(USNO) 5 R 1 - - 0.09 - - - 30 54775.79 to 54803.79 - - 0.10 - - - EOP(GSFC) 8 R 4 0.07 0.08 0.03 - 0.16 0.07 9 54774.21 to 54802.21 0.13 0.10 0.07 - 0.11 0.06 EOP(GSFC) 8 R 1 - - 0.10 - - - 30 54775.79 to 54803.79 - - 0.10 - - - EOP(IAA) 5 R 2 0.07 0.08 0.03 - 0.14 0.05 9 54774.21 to 54802.21 0.21 0.12 0.06 - 0.28 0.08 EOP(IAA) 5 R 1 - - 0.08 - - - 30 54775.79 to 54803.79 - - 0.23 - - - EOP(SPBU) 3 R 3 0.08 0.10 0.04 - 0.18 0.08 9 54774.21 to 54802.21 0.17 0.16 0.13 - 0.17 0.14 EOP(MAO) 3 R 1 0.09 0.10 0.04 - 0.16 0.06 9 54774.24 to 54802.23 0.19 0.18 0.06 - 0.33 0.12 EOP(USNO) 6 R 2 0.09 0.10 0.03 - 0.21 0.09 9 54774.21 to 54802.21 0.14 0.10 0.07 - 0.12 0.08 EOP(GSFC) 8 R 1 - - 0.10 - - - 30 54775.79 to 54803.79 - - 0.10 - - - EOP(IVS) 2 R 1 0.04 0.05 0.02 - 0.10 0.04 9 54774.21 to 54802.21 0.17 0.09 0.04 - 0.16 0.03 GPS EOP(CODE) 98 P 1 0.01 0.01 - 0.05 - - 30 54774.50 to 54803.50 0.04 0.07 - 0.15 - - EOP(EMR) 96 P 3 0.03 0.03 - 0.06 - - 30 54774.50 to 54803.50 0.08 0.08 - 0.28 - - EOP(ESOC) 96 P 1 0.01 0.01 - 0.02 - - 30 54774.50 to 54803.50 0.07 0.06 - 0.11 - - EOP(GFZ) 96 P 2 0.00 0.00 - 0.01 - - 30 54774.50 to 54803.50 0.03 0.05 - 0.14 - - EOP(IAA) 1 P 1 0.03 0.03 - 0.06 - - 30 54774.50 to 54803.50 0.15 0.47 - 0.28 - - EOP(JPL) 96 P 3 0.01 0.01 - 0.05 - - 30 54774.50 to 54803.50 0.07 0.04 - 0.30 - - EOP(NOAA) 96 P 1 0.00 0.00 - 0.34 - - 30 54774.50 to 54803.50 0.08 0.08 - 0.25 - - EOP(SIO) 96 P 1 0.02 0.02 - 0.05 - - 30 54774.50 to 54803.50 0.07 0.03 - 0.20 - - EOP(IGS R)96 P 2 0.02 0.02 - 0.05 - - 30 54774.50 to 54803.50 0.05 0.04 - 0.06 - - EOP(IGS) 7 P 1 0.02 0.02 - 0.05 - - 30 54774.50 to 54803.50 0.02 0.02 - 0.08 - - SLR EOP(ASI) 3 L 2 0.07 0.07 - 0.15 - - 30 54774.50 to 54803.50 0.23 0.22 - 0.42 - - EOP(ILRS) 5 L 1 0.07 0.07 - 0.67 - - 30 54774.50 to 54803.50 0.13 0.24 - 0.41 - - EOP(IAA) 2 L 1 0.04 0.04 0.02 0.02 - - 31 54774.00 to 54804.00 0.18 0.19 0.20 0.23 - - EOP(MCC) 97 L 1 0.16 0.18 - 0.32 - - 31 54774.00 to 54804.00 0.16 0.18 - 1.50 - - Bulletin A EOP(NEOS) 97 C 1 0.04 0.04 0.05 - - - 31 54774.00 to 54804.00 0.05 0.03 0.05 - - -