BULLETIN B 261 (IAU 2000) 28 October 2009 ============================================================================== 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 2009 " " s s 0.001" 0.001" (0h UTC) Final Bulletin B values. SEP 5 55079 0.27273 0.40632 0.218027 -33.781973 0.21 -0.35 SEP 10 55084 0.27186 0.39183 0.214783 -33.785217 0.26 -0.30 SEP 15 55089 0.27318 0.37662 0.211496 -33.788504 0.18 -0.18 SEP 20 55094 0.27490 0.36333 0.208043 -33.791957 0.00 -0.24 SEP 25 55099 0.27118 0.34805 0.204275 -33.795725 0.30 -0.12 SEP 30 55104 0.26653 0.33418 0.200254 -33.799746 0.15 -0.33 OCT 5 55109 0.26369 0.32043 0.195250 -33.804750 0.13 -0.09 Preliminary extension, to be updated weekly in Bulletin A and monthly in Bulletin B. OCT 10 55114 0.26176 0.30859 0.190386 -33.809614 0.16 -0.26 OCT 15 55119 0.25500 0.29621 0.186039 -33.813961 0.24 -0.61 OCT 20 55124 0.25001 0.28337 0.181382 -33.818618 0.02 -0.04 OCT 25 55129 0.24482 0.27110 0.176314 -33.823686 0.02 -0.04 OCT 30 55134 0.23995 0.25914 0.171013 -33.828987 0.02 -0.05 NOV 4 55139 0.23330 0.24420 0.164197 -33.835803 0.02 -0.05 NOV 9 55144 0.22551 0.22843 0.157089 -33.842911 0.02 -0.05 NOV 14 55149 0.22089 0.21241 0.150085 -33.849915 0.02 -0.05 NOV 19 55154 0.21419 0.19770 0.143279 -33.856721 0.02 -0.05 NOV 24 55159 0.20449 0.18646 0.136709 -33.863291 0.02 -0.05 NOV 29 55164 0.19391 0.17418 0.130352 -33.869648 0.02 -0.05 DEC 4 55169 0.18493 0.16363 0.124237 -33.875763 0.00 0.00 DEC 9 55174 0.17376 0.15414 0.118391 -33.881609 0.00 0.00 DEC 14 55179 0.15990 0.14383 0.112801 -33.887199 0.00 0.00 DEC 19 55184 0.14782 0.13444 0.107511 -33.892489 0.00 0.00 DEC 24 55189 0.13441 0.12902 0.102495 -33.897505 0.00 0.00 DEC 29 55194 0.11887 0.12464 0.097721 -33.902279 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 262 (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 2008 IERS Annual Report. 2009 MJD x y UT1-UTC UT1-UT1R D dX dY (0 h UTC) " " s ms ms 0.001" 0.001" SEP 5 55079 0.27273 0.40632 0.218624 0.597 0.937 0.21 -0.35 SEP 6 55080 0.27278 0.40364 0.217669 0.287 0.984 0.15 -0.24 SEP 7 55081 0.27247 0.40068 0.216727 -0.006 0.928 0.18 -0.20 SEP 8 55082 0.27231 0.39753 0.215864 -0.208 0.794 0.22 -0.22 SEP 9 55083 0.27215 0.39459 0.215156 -0.263 0.618 0.27 -0.27 SEP 10 55084 0.27186 0.39183 0.214638 -0.145 0.442 0.26 -0.30 SEP 11 55085 0.27150 0.38904 0.214289 0.132 0.305 0.21 -0.29 SEP 12 55086 0.27158 0.38595 0.214030 0.506 0.267 0.15 -0.25 SEP 13 55087 0.27196 0.38283 0.213737 0.880 0.359 0.12 -0.20 SEP 14 55088 0.27248 0.37981 0.213306 1.141 0.534 0.14 -0.19 SEP 15 55089 0.27318 0.37662 0.212683 1.187 0.744 0.18 -0.18 SEP 16 55090 0.27417 0.37372 0.211807 0.965 0.998 0.21 -0.17 SEP 17 55091 0.27518 0.37110 0.210660 0.493 1.258 0.20 -0.15 SEP 18 55092 0.27560 0.36845 0.209330 -0.140 1.359 0.14 -0.14 SEP 19 55093 0.27553 0.36586 0.207972 -0.798 1.318 0.05 -0.17 SEP 20 55094 0.27490 0.36333 0.206704 -1.339 1.189 0.00 -0.24 SEP 21 55095 0.27407 0.36061 0.205619 -1.658 0.937 0.10 -0.28 SEP 22 55096 0.27342 0.35765 0.204825 -1.714 0.642 0.19 -0.30 SEP 23 55097 0.27275 0.35459 0.204290 -1.523 0.440 0.23 -0.28 SEP 24 55098 0.27198 0.35142 0.203912 -1.147 0.339 0.24 -0.22 SEP 25 55099 0.27118 0.34805 0.203611 -0.664 0.290 0.30 -0.12 SEP 26 55100 0.27026 0.34511 0.203342 -0.152 0.273 0.28 -0.03 SEP 27 55101 0.26912 0.34204 0.203063 0.319 0.304 0.19 -0.01 SEP 28 55102 0.26827 0.33903 0.202687 0.688 0.469 0.12 -0.08 SEP 29 55103 0.26756 0.33672 0.202098 0.915 0.719 0.09 -0.21 SEP 30 55104 0.26653 0.33418 0.201232 0.977 0.983 0.15 -0.33 OCT 1 55105 0.26563 0.33140 0.200127 0.878 1.186 0.23 -0.39 OCT 2 55106 0.26502 0.32847 0.198890 0.647 1.260 0.27 -0.34 OCT 3 55107 0.26464 0.32572 0.197604 0.336 1.299 0.23 -0.22 OCT 4 55108 0.26420 0.32305 0.196274 0.013 1.317 0.16 -0.11 OCT 5 55109 0.26369 0.32043 0.195005 -0.245 1.207 0.13 -0.09 OCT 6 55110 0.26313 0.31794 0.193903 -0.369 1.008 0.18 -0.19 OCT 7 55111 0.26241 0.31561 0.192959 -0.317 0.838 0.27 -0.33 OCT 8 55112 0.26193 0.31344 0.192192 -0.090 0.697 0.31 -0.40 OCT 9 55113 0.26198 0.31100 0.191580 0.260 0.609 0.26 -0.34 OCT 10 55114 0.26176 0.30859 0.191028 0.642 0.586 0.16 -0.26 OCT 11 55115 0.26110 0.30603 0.190407 0.947 0.649 0.13 -0.29 OCT 12 55116 0.26017 0.30366 0.189685 1.077 0.827 0.17 -0.42 OCT 13 55117 0.25887 0.30142 0.188743 0.971 1.080 0.23 -0.56 OCT 14 55118 0.25715 0.29914 0.187521 0.627 1.302 0.26 -0.64 OCT 15 55119 0.25500 0.29621 0.186140 0.102 1.435 0.24 -0.61 OCT 16 55120 0.25354 0.29310 0.184661 -0.499 1.483 0.16 -0.42 OCT 17 55121 0.25279 0.29052 0.183199 -1.049 1.426 0.02 -0.04 OCT 18 55122 0.25189 0.28797 0.181883 -1.434 1.233 0.02 -0.04 OCT 19 55123 0.25093 0.28551 0.180784 -1.586 0.975 0.02 -0.04 OCT 20 55124 0.25001 0.28337 0.179890 -1.492 0.781 0.02 -0.04 OCT 21 55125 0.24900 0.28148 0.179171 -1.191 0.644 0.02 -0.04 OCT 22 55126 0.24802 0.27927 0.178578 -0.752 0.571 0.02 -0.04 OCT 23 55127 0.24724 0.27666 0.178029 -0.256 0.553 0.02 -0.04 OCT 24 55128 0.24611 0.27388 0.177502 0.222 0.546 0.02 -0.04 OCT 25 55129 0.24482 0.27110 0.176933 0.620 0.623 0.02 -0.04 OCT 26 55130 0.24390 0.26875 0.176199 0.890 0.794 0.02 -0.04 OCT 27 55131 0.24293 0.26657 0.175339 1.006 0.997 0.02 -0.04 OCT 28 55132 0.24207 0.26432 0.174290 0.965 1.189 0.02 -0.05 OCT 29 55133 0.24116 0.26205 0.173002 0.783 1.336 0.02 -0.05 OCT 30 55134 0.23995 0.25914 0.171513 0.500 1.425 0.02 -0.05 OCT 31 55135 0.23885 0.25579 0.169904 0.176 1.442 0.02 -0.05 NOV 1 55136 0.23756 0.25279 0.168270 -0.119 1.379 0.02 -0.05 NOV 2 55137 0.23597 0.24993 0.166701 -0.313 1.244 0.02 -0.05 NOV 3 55138 0.23457 0.24702 0.165265 -0.347 1.064 0.02 -0.05 NOV 4 55139 0.23330 0.24420 0.163995 -0.202 0.888 0.02 -0.05 NOV 5 55140 0.23158 0.24145 0.162861 0.088 0.770 0.02 -0.05 NOV 6 55141 0.22967 0.23850 0.161790 0.442 0.752 0.02 -0.05 NOV 7 55142 0.22795 0.23523 0.160675 0.749 0.849 0.02 -0.05 NOV 8 55143 0.22649 0.23195 0.159409 0.904 1.035 0.02 -0.05 NOV 9 55144 0.22551 0.22843 0.157932 0.843 1.260 0.02 -0.05 NOV 10 55145 0.22491 0.22516 0.156235 0.558 1.463 0.02 -0.05 NOV 11 55146 0.22410 0.22208 0.154371 0.099 1.592 0.02 -0.05 NOV 12 55147 0.22325 0.21874 0.152428 -0.443 1.615 0.02 -0.05 NOV 13 55148 0.22208 0.21557 0.150516 -0.959 1.528 0.02 -0.05 NOV 14 55149 0.22089 0.21241 0.148738 -1.347 1.352 0.02 -0.05 NOV 15 55150 0.21996 0.20898 0.147172 -1.535 1.123 0.02 -0.05 NOV 16 55151 0.21844 0.20570 0.145839 -1.497 0.889 0.02 -0.05 NOV 17 55152 0.21658 0.20297 0.144725 -1.249 0.693 0.02 -0.05 NOV 18 55153 0.21521 0.20028 0.143774 -0.847 0.565 0.02 -0.05 NOV 19 55154 0.21419 0.19770 0.142914 -0.365 0.515 0.02 -0.05 NOV 20 55155 0.21292 0.19534 0.142067 0.121 0.538 0.02 -0.05 NOV 21 55156 0.21145 0.19280 0.141169 0.545 0.621 0.02 -0.05 NOV 22 55157 0.20967 0.19042 0.140166 0.855 0.745 0.02 -0.05 NOV 23 55158 0.20729 0.18835 0.139030 1.023 0.887 0.02 -0.05 NOV 24 55159 0.20449 0.18646 0.137749 1.040 1.028 0.02 -0.05 NOV 25 55160 0.20182 0.18435 0.136342 0.918 1.147 0.02 -0.05 NOV 26 55161 0.19931 0.18211 0.134833 0.690 1.225 0.02 -0.05 NOV 27 55162 0.19706 0.17970 0.133273 0.401 1.249 0.02 -0.05 NOV 28 55163 0.19529 0.17684 0.131720 0.113 1.207 0.02 -0.05 NOV 29 55164 0.19391 0.17418 0.130242 -0.110 1.100 0.02 -0.05 NOV 30 55165 0.19263 0.17169 0.128904 -0.205 0.940 0.02 -0.05 IERS, B 262 (3) 3 - NORMAL VALUES OF THE EARTH ORIENTATION PARAMETERS AT FIVE-DAY INTERVALS (IERS evaluation). Raw normal values Uncertainties 2009 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 5 55079 0.27272 0.40628 0.218628 0.222 -.324 0.01 0.01 0.02 0.04 0.04 SEP 10 55084 0.27185 0.39181 0.214641 0.231 -.267 0.01 0.01 0.01 0.02 0.02 SEP 15 55089 0.27318 0.37660 0.212687 0.209 -.177 0.01 0.01 0.01 0.02 0.02 SEP 20 55094 0.27490 0.36331 0.206703 -.050 -.275 0.01 0.01 0.02 0.03 0.04 SEP 25 55099 0.27118 0.34802 0.203609 0.317 -.117 0.01 0.01 0.01 0.02 0.03 SEP 30 55104 0.26652 0.33415 0.201233 0.143 -.330 0.01 0.01 0.01 0.02 0.04 OCT 5 55109 0.26368 0.32039 0.195010 0.143 -.088 0.01 0.01 0.03 0.05 0.07 OCT 10 55114 0.26176 0.30856 0.191027 0.140 -.261 0.01 0.01 0.02 0.04 0.04 OCT 15 55119 0.25496 0.29619 0.186157 -.037 -.819 0.02 0.03 0.04 0.13 0.12 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 2009 MJD s (microrad/s) SEP 5 55079 0.00065 72.921 15092 SEP 10 55084 0.00065 15092 SEP 15 55089 0.00066 15091 SEP 20 55094 0.00075 15083 SEP 25 55099 0.00081 15079 SEP 30 55104 0.00097 15065 OCT 5 55109 0.00101 15061 5 - INFORMATION ON TIME SCALES No leap second will be introduced in UTC on 31 December 2009 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