BULLETIN B 224 3 october 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. AUG 2 53949 0.11139 0.27035 0.181219 -32.818781 -64.2 -5.7 AUG 7 53954 0.10844 0.26496 0.179694 -32.820306 -64.9 -6.0 AUG 12 53959 0.10602 0.26058 0.178440 -32.821560 -65.2 -5.5 AUG 17 53964 0.10074 0.25781 0.176714 -32.823286 -66.4 -5.7 AUG 22 53969 0.09409 0.25497 0.174751 -32.825249 -66.0 -6.2 AUG 27 53974 0.08857 0.25392 0.172551 -32.827449 -65.9 -4.8 SEP 1 53979 0.08252 0.25393 0.170025 -32.829975 -66.5 -6.2 Preliminary extension, to be updated weekly in Bulletin A and monthly in Bulletin B. SEP 6 53984 0.07684 0.25424 0.167231 -32.832769 -65.7 -5.6 SEP 11 53989 0.07086 0.25388 0.163803 -32.836197 -67.3 -5.2 SEP 16 53994 0.06338 0.25187 0.159591 -32.840409 -67.0 -5.8 SEP 21 53999 0.05425 0.25289 0.155508 -32.844492 -65.7 -4.5 SEP 26 54004 0.04327 0.25204 0.150924 -32.849076 -65.8 -5.1 OCT 1 54009 0.03276 0.25240 0.145394 -32.854606 -65.5 -5.5 OCT 6 54014 0.02398 0.25378 0.139736 -32.860264 -64.9 -4.7 OCT 11 54019 0.01739 0.25623 0.134609 -32.865391 -65.0 -4.8 OCT 16 54024 0.01199 0.25942 0.129734 -32.870266 -64.4 -4.9 OCT 21 54029 0.00741 0.26319 0.125080 -32.874920 -63.4 -3.6 OCT 26 54034 0.00345 0.26747 0.120609 -32.879391 -63.5 -4.5 OCT 31 54039 0.00000 0.27221 0.116337 -32.883663 -62.3 -4.4 NOV 5 54044 -0.00297 0.27736 0.112240 -32.887760 -62.3 -3.4 NOV 10 54049 -0.00550 0.28288 0.108326 -32.891674 -62.0 -3.8 NOV 15 54054 -0.00757 0.28875 0.104588 -32.895412 -60.8 -3.1 NOV 20 54059 -0.00918 0.29494 0.101017 -32.898983 -60.8 -2.7 NOV 25 54064 -0.01030 0.30142 0.097629 -32.902371 -60.4 -3.0 NOV 30 54069 -0.01093 0.30815 0.094410 -32.905590 -59.1 -3.0 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 224 (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 2005 IERS Annual Report. 2006 MJD x y UT1-UTC UT1-UT1R D dPsi dEpsilon (0 h UTC) " " s ms ms 0.001" 0.001" AUG 2 53949 0.11139 0.27035 0.180816 -0.403 0.311 -64.2 -5.7 AUG 3 53950 0.11034 0.26969 0.180590 -0.353 0.160 -64.7 -6.0 AUG 4 53951 0.10943 0.26872 0.180496 -0.131 0.000 -65.1 -6.2 AUG 5 53952 0.10888 0.26754 0.180578 0.248 -0.124 -65.2 -6.3 AUG 6 53953 0.10861 0.26624 0.180717 0.728 -0.181 -65.1 -6.2 AUG 7 53954 0.10844 0.26496 0.180899 1.205 -0.157 -64.9 -6.0 AUG 8 53955 0.10851 0.26390 0.180985 1.545 0.010 -64.6 -5.9 AUG 9 53956 0.10848 0.26320 0.180843 1.623 0.320 -64.5 -5.8 AUG 10 53957 0.10792 0.26249 0.180335 1.363 0.687 -64.6 -5.7 AUG 11 53958 0.10697 0.26152 0.179492 0.787 0.970 -64.9 -5.6 AUG 12 53959 0.10602 0.26058 0.178447 0.007 1.115 -65.2 -5.5 AUG 13 53960 0.10522 0.25979 0.177324 -0.801 1.071 -65.6 -5.4 AUG 14 53961 0.10447 0.25915 0.176360 -1.459 0.850 -65.8 -5.3 AUG 15 53962 0.10351 0.25870 0.175654 -1.840 0.571 -66.1 -5.3 AUG 16 53963 0.10217 0.25837 0.175219 -1.899 0.292 -66.3 -5.4 AUG 17 53964 0.10074 0.25781 0.175048 -1.666 0.045 -66.4 -5.7 AUG 18 53965 0.09950 0.25710 0.175094 -1.226 -0.124 -66.4 -6.0 AUG 19 53966 0.09819 0.25632 0.175259 -0.687 -0.191 -66.4 -6.3 AUG 20 53967 0.09667 0.25562 0.175444 -0.152 -0.122 -66.3 -6.4 AUG 21 53968 0.09517 0.25521 0.175478 0.292 0.045 -66.2 -6.4 AUG 22 53969 0.09409 0.25497 0.175340 0.589 0.218 -66.0 -6.2 AUG 23 53970 0.09299 0.25466 0.175040 0.711 0.411 -65.9 -5.7 AUG 24 53971 0.09167 0.25415 0.174525 0.663 0.587 -65.8 -5.3 AUG 25 53972 0.09060 0.25376 0.173880 0.479 0.687 -65.8 -4.9 AUG 26 53973 0.08972 0.25376 0.173171 0.212 0.712 -65.8 -4.7 AUG 27 53974 0.08857 0.25392 0.172480 -0.071 0.724 -65.9 -4.8 AUG 28 53975 0.08717 0.25395 0.171745 -0.303 0.689 -66.0 -5.0 AUG 29 53976 0.08586 0.25387 0.171119 -0.425 0.557 -66.2 -5.4 AUG 30 53977 0.08461 0.25387 0.170642 -0.397 0.393 -66.3 -5.7 AUG 31 53978 0.08349 0.25388 0.170335 -0.198 0.224 -66.5 -6.1 SEP 1 53979 0.08252 0.25393 0.170186 0.161 0.081 -66.5 -6.2 SEP 2 53980 0.08132 0.25402 0.170153 0.639 -0.003 -66.3 -6.3 SEP 3 53981 0.07983 0.25408 0.170158 1.154 0.041 -66.1 -6.3 SEP 4 53982 0.07836 0.25412 0.170026 1.588 0.234 -65.8 -6.1 SEP 5 53983 0.07736 0.25413 0.169646 1.809 0.529 -65.7 -5.9 SEP 6 53984 0.07684 0.25424 0.168942 1.711 0.887 -65.7 -5.6 SEP 7 53985 0.07622 0.25454 0.167876 1.258 1.256 -66.0 -5.3 SEP 8 53986 0.07515 0.25475 0.166470 0.517 1.514 -66.4 -5.1 SEP 9 53987 0.07387 0.25462 0.164913 -0.356 1.572 -66.8 -5.0 SEP 10 53988 0.07247 0.25429 0.163392 -1.163 1.443 -67.1 -5.0 SEP 11 53989 0.07086 0.25388 0.162076 -1.728 1.170 -67.3 -5.2 SEP 12 53990 0.06914 0.25353 0.161069 -1.954 0.846 -67.3 -5.4 SEP 13 53991 0.06741 0.25304 0.160369 -1.840 0.601 -67.3 -5.6 SEP 14 53992 0.06591 0.25238 0.159831 -1.466 0.421 -67.2 -5.8 SEP 15 53993 0.06466 0.25193 0.159486 -0.947 0.304 -67.1 -5.9 SEP 16 53994 0.06338 0.25187 0.159186 -0.404 0.297 -67.0 -5.8 SEP 17 53995 0.06189 0.25193 0.158865 0.067 0.376 -66.8 -5.7 SEP 18 53996 0.06028 0.25203 0.158418 0.401 0.564 -66.5 -5.5 SEP 19 53997 0.05854 0.25240 0.157731 0.567 0.798 -66.2 -5.3 SEP 20 53998 0.05650 0.25272 0.156827 0.562 0.913 -65.9 -5.0 SEP 21 53999 0.05425 0.25289 0.155918 0.410 1.029 -65.7 -4.5 SEP 22 54000 0.05175 0.25299 0.154787 0.159 1.189 -65.6 -4.2 SEP 23 54001 0.04926 0.25284 0.153563 -0.125 1.133 -65.6 -4.2 SEP 24 54002 0.04715 0.25262 0.152405 -0.375 1.114 -65.7 -4.5 SEP 25 54003 0.04508 0.25239 0.151353 -0.524 1.010 -65.8 -4.8 SEP 26 54004 0.04327 0.25204 0.150397 -0.527 0.913 -65.8 -5.1 SEP 27 54005 0.04170 0.25183 0.149531 -0.357 0.724 -65.8 -5.3 SEP 28 54006 0.03981 0.25189 0.148814 -0.019 0.655 -65.7 -5.5 IERS, B 224 (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" AUG 2 53949 0.11138 0.27035 0.180817 -64.24 -5.67 0.02 0.02 0.02 0.07 0.03 AUG 7 53954 0.10846 0.26495 0.180900 -64.81 -6.00 0.01 0.01 0.02 0.06 0.02 AUG 12 53959 0.10602 0.26059 0.178446 -65.26 -5.51 0.01 0.01 0.02 0.07 0.03 AUG 17 53964 0.10074 0.25781 0.175048 -66.36 -5.67 0.01 0.01 0.02 0.04 0.02 AUG 22 53969 0.09409 0.25497 0.175339 -66.00 -6.17 0.01 0.01 0.02 0.05 0.02 AUG 27 53974 0.08857 0.25391 0.172479 -65.90 -4.79 0.02 0.02 0.02 0.04 0.02 SEP 1 53979 0.08252 0.25393 0.170184 -66.68 -6.25 0.01 0.01 0.02 0.08 0.04 SEP 6 53984 0.07686 0.25424 0.168947 -65.66 -5.61 0.02 0.02 0.02 0.05 0.02 SEP 11 53989 0.07086 0.25389 0.162078 -67.33 -5.25 0.02 0.02 0.02 0.08 0.03 SEP 16 53994 0.06337 0.25186 0.159183 -67.00 -5.77 0.01 0.01 0.02 0.13 0.07 SEP 21 53999 0.05425 0.25289 0.155924 - - 0.01 0.01 0.03 - - SEP 26 54004 0.04329 0.25204 0.150404 - - 0.02 0.01 0.05 - - 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) AUG 2 53949 0.00028 72.921 15123 AUG 7 53954 0.00028 15123 AUG 12 53959 0.00030 15122 AUG 17 53964 0.00040 15113 AUG 22 53969 0.00043 15110 AUG 27 53974 0.00046 15108 SEP 1 53979 0.00051 15103 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 224 (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 0.03 - 0.16 0.06 13 53951.27 to 53993.27 0.12 0.12 0.08 - 0.40 0.10 EOP(BKG) 3 R 4 0.07 0.07 0.03 - 0.14 0.05 13 53951.27 to 53993.27 0.09 0.10 0.09 - 0.11 0.05 EOP(BKG) 3 R 2 - - 0.15 - - - 47 53949.79 to 54000.80 - - 0.19 - - - EOP(USNO) 5 R 1 - - 0.17 - - - 52 53949.79 to 54005.79 - - 0.13 - - - EOP(GSFC) 4 R 1 - - 0.15 - - - 48 53949.79 to 54003.79 - - 0.20 - - - EOP(IAA) 5 R 2 0.06 0.07 0.03 - - - 13 53951.27 to 53993.27 0.09 0.13 0.08 - - - EOP(IAA) 5 R 1 - - 0.15 - - - 48 53949.79 to 54003.79 - - 0.12 - - - EOP(SPBU) 3 R 3 0.27 0.36 0.18 - 0.07 0.03 11 53951.27 to 53993.27 0.16 0.11 0.09 - 0.19 0.05 EOP(SPBU) 2 R 1 - - 0.15 - - - 48 53949.79 to 54003.79 - - 0.18 - - - EOP(MAO) 3 R 1 0.08 0.09 0.04 - - - 12 53951.29 to 53993.21 0.11 0.09 0.08 - - - EOP(USNO) 6 R 2 0.07 0.07 0.03 - 0.16 0.06 13 53951.27 to 53993.27 0.12 0.14 0.06 - 0.15 0.06 EOP(IVS) 0 R 1 0.04 0.04 0.02 - 0.06 0.03 10 53951.00 to 53986.00 0.13 0.09 0.07 - 0.07 0.08 GPS EOP(CODE) 98 P 1 0.01 0.01 - 0.08 - - 57 53949.50 to 54005.50 0.06 0.03 - 0.20 - - EOP(EMR) 96 P 3 0.03 0.03 - 0.04 - - 57 53949.50 to 54005.50 0.08 0.06 - 0.36 - - EOP(ESOC) 96 P 1 0.01 0.01 - 0.04 - - 57 53949.50 to 54005.50 0.05 0.05 - 0.38 - - EOP(GFZ) 96 P 2 0.01 0.01 - 0.02 - - 57 53949.50 to 54005.50 0.06 0.07 - 0.25 - - EOP(IAA) 1 P 1 0.03 0.03 - 0.06 - - 57 53949.50 to 54005.50 0.23 0.13 - 0.48 - - EOP(JPL) 96 P 3 0.02 0.02 - 0.13 - - 46 53949.50 to 53994.50 0.03 0.05 - 0.30 - - EOP(NOAA) 96 P 1 0.01 0.01 - 0.02 - - 49 53949.50 to 53997.50 0.13 0.13 - 0.20 - - EOP(SIO) 96 P 1 0.04 0.05 - 0.08 - - 57 53949.50 to 54005.50 0.14 0.28 - 0.15 - - EOP(IGS F)95 P 2 0.02 0.02 0.09 0.06 - - 46 53949.50 to 53994.50 0.03 0.08 0.16 0.15 - - EOP(IGS R)96 P 2 0.04 0.05 0.21 0.07 - - 57 53949.50 to 54005.50 0.06 0.04 0.53 0.20 - - EOP(IERS) 97 P 1 0.03 0.03 0.17 0.12 - - 57 53949.50 to 54005.50 0.02 0.02 0.45 0.16 - - SLR EOP(ASI) 3 L 2 0.06 0.06 - 0.13 - - 56 53949.50 to 54004.50 0.18 0.17 - 0.59 - - EOP(IAA) 2 L 1 0.03 0.03 0.02 0.02 - - 58 53949.00 to 54006.00 0.13 0.21 0.23 0.15 - - EOP(MCC) 97 L 1 0.14 0.17 - 0.10 - - 51 53949.00 to 53999.00 0.19 0.32 - 2.75 - - EOP(ILRS) 5 L 1 0.04 0.05 - 0.09 - - 53 53949.50 to 54001.50 0.13 0.14 - 0.46 - - Bulletin A EOP(NEOS) 97 C 1 0.04 0.05 0.09 - - - 58 53949.00 to 54006.00 0.04 0.13 0.17 - - -