BULLETIN B 260 (IAU 2000) 1 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. AUG 1 55044 0.22176 0.49302 0.231416 -33.768584 0.27 -0.06 AUG 6 55049 0.23202 0.48003 0.230263 -33.769737 0.29 -0.32 AUG 11 55054 0.24239 0.46834 0.228633 -33.771367 0.44 0.04 AUG 16 55059 0.25148 0.45691 0.226989 -33.773011 0.06 -0.14 AUG 21 55064 0.25797 0.44482 0.225568 -33.774432 0.10 -0.22 AUG 26 55069 0.26423 0.43362 0.223700 -33.776300 0.32 -0.27 AUG 31 55074 0.26985 0.42087 0.220920 -33.779080 0.28 -0.08 SEP 5 55079 0.27273 0.40632 0.218027 -33.781973 0.21 -0.35 Preliminary extension, to be updated weekly in Bulletin A and monthly in Bulletin B. SEP 10 55084 0.27186 0.39183 0.214783 -33.785217 0.26 -0.30 SEP 15 55089 0.27318 0.37662 0.211487 -33.788513 0.25 -0.45 SEP 20 55094 0.27492 0.36328 0.208045 -33.791955 0.02 -0.04 SEP 25 55099 0.27123 0.34801 0.204282 -33.795718 0.02 -0.04 SEP 30 55104 0.26658 0.33412 0.200263 -33.799737 0.02 -0.04 OCT 5 55109 0.26352 0.31803 0.195285 -33.804715 0.02 -0.05 OCT 10 55114 0.26326 0.29996 0.189317 -33.810683 0.02 -0.05 OCT 15 55119 0.26343 0.28311 0.182968 -33.817032 0.02 -0.05 OCT 20 55124 0.26271 0.26440 0.176390 -33.823610 0.02 -0.05 OCT 25 55129 0.26036 0.24733 0.169692 -33.830308 0.02 -0.05 OCT 30 55134 0.25859 0.23212 0.162907 -33.837093 0.02 -0.05 NOV 4 55139 0.25342 0.21693 0.156056 -33.843944 0.00 0.00 NOV 9 55144 0.24706 0.20165 0.149228 -33.850772 0.00 0.00 NOV 14 55149 0.24287 0.18667 0.142452 -33.857548 0.00 0.00 NOV 19 55154 0.23532 0.17228 0.135796 -33.864204 0.00 0.00 NOV 24 55159 0.22644 0.16161 0.129335 -33.870665 0.00 0.00 NOV 29 55164 0.21629 0.15138 0.123069 -33.876931 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 260 (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" AUG 1 55044 0.22176 0.49302 0.230581 -0.835 -0.310 0.27 -0.06 AUG 2 55045 0.22395 0.49041 0.230928 -0.296 -0.328 0.23 -0.11 AUG 3 55046 0.22592 0.48770 0.231219 0.223 -0.244 0.32 -0.19 AUG 4 55047 0.22793 0.48508 0.231393 0.658 -0.123 0.37 -0.28 AUG 5 55048 0.23002 0.48244 0.231460 0.960 0.012 0.34 -0.34 AUG 6 55049 0.23202 0.48003 0.231362 1.099 0.191 0.29 -0.32 AUG 7 55050 0.23420 0.47765 0.231053 1.073 0.382 0.25 -0.23 AUG 8 55051 0.23633 0.47539 0.230598 0.906 0.531 0.28 -0.08 AUG 9 55052 0.23836 0.47324 0.230019 0.641 0.627 0.36 0.04 AUG 10 55053 0.24041 0.47081 0.229357 0.341 0.655 0.45 0.08 AUG 11 55054 0.24239 0.46834 0.228706 0.073 0.607 0.44 0.04 AUG 12 55055 0.24446 0.46577 0.228156 -0.097 0.471 0.32 -0.08 AUG 13 55056 0.24667 0.46338 0.227778 -0.120 0.268 0.11 -0.17 AUG 14 55057 0.24850 0.46139 0.227597 0.026 0.095 -0.04 -0.21 AUG 15 55058 0.24991 0.45923 0.227589 0.316 -0.042 -0.06 -0.19 AUG 16 55059 0.25148 0.45691 0.227669 0.680 -0.102 0.06 -0.14 AUG 17 55060 0.25285 0.45447 0.227730 1.006 0.003 0.18 -0.15 AUG 18 55061 0.25397 0.45209 0.227624 1.169 0.247 0.29 -0.19 AUG 19 55062 0.25499 0.44968 0.227224 1.076 0.523 0.30 -0.25 AUG 20 55063 0.25619 0.44718 0.226561 0.700 0.752 0.22 -0.28 AUG 21 55064 0.25797 0.44482 0.225671 0.103 0.940 0.10 -0.22 AUG 22 55065 0.25975 0.44259 0.224667 -0.588 1.005 0.00 -0.11 AUG 23 55066 0.26085 0.44042 0.223722 -1.218 0.879 -0.02 -0.01 AUG 24 55067 0.26189 0.43810 0.222907 -1.661 0.684 0.05 -0.01 AUG 25 55068 0.26305 0.43589 0.222306 -1.848 0.479 0.18 -0.12 AUG 26 55069 0.26423 0.43362 0.221927 -1.773 0.284 0.32 -0.27 AUG 27 55070 0.26536 0.43124 0.221722 -1.480 0.128 0.38 -0.36 AUG 28 55071 0.26640 0.42881 0.221632 -1.036 0.047 0.36 -0.33 AUG 29 55072 0.26757 0.42625 0.221575 -0.517 0.048 0.29 -0.20 AUG 30 55073 0.26885 0.42361 0.221504 0.005 0.094 0.24 -0.07 AUG 31 55074 0.26985 0.42087 0.221381 0.462 0.168 0.28 -0.08 SEP 1 55075 0.27047 0.41805 0.221161 0.799 0.289 0.35 -0.20 SEP 2 55076 0.27089 0.41494 0.220781 0.981 0.462 0.39 -0.35 SEP 3 55077 0.27135 0.41178 0.220225 0.994 0.644 0.37 -0.45 SEP 4 55078 0.27211 0.40891 0.219498 0.853 0.815 0.30 -0.45 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 0.16 -0.19 SEP 8 55082 0.27231 0.39753 0.215864 -0.208 0.794 0.22 -0.21 SEP 9 55083 0.27215 0.39459 0.215156 -0.263 0.618 0.26 -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 0.214288 0.132 0.305 0.21 -0.28 SEP 12 55086 0.27158 0.38596 0.214028 0.506 0.268 0.15 -0.26 SEP 13 55087 0.27196 0.38283 0.213736 0.880 0.359 0.14 -0.29 SEP 14 55088 0.27248 0.37981 0.213306 1.141 0.534 0.18 -0.36 SEP 15 55089 0.27318 0.37662 0.212674 1.187 0.744 0.25 -0.45 SEP 16 55090 0.27417 0.37371 0.211802 0.965 0.999 0.28 -0.50 SEP 17 55091 0.27518 0.37110 0.210663 0.493 1.259 0.26 -0.44 SEP 18 55092 0.27560 0.36844 0.209330 -0.140 1.360 0.16 -0.29 SEP 19 55093 0.27553 0.36588 0.207969 -0.798 1.319 0.02 -0.04 SEP 20 55094 0.27492 0.36328 0.206706 -1.339 1.186 0.02 -0.04 SEP 21 55095 0.27410 0.36053 0.205621 -1.658 0.937 0.02 -0.04 SEP 22 55096 0.27345 0.35761 0.204813 -1.714 0.649 0.02 -0.04 SEP 23 55097 0.27277 0.35454 0.204277 -1.523 0.441 0.02 -0.04 SEP 24 55098 0.27202 0.35135 0.203907 -1.147 0.334 0.02 -0.04 SEP 25 55099 0.27123 0.34801 0.203618 -0.664 0.290 0.02 -0.04 SEP 26 55100 0.27026 0.34500 0.203342 -0.152 0.277 0.02 -0.04 SEP 27 55101 0.26912 0.34196 0.203088 0.319 0.314 0.02 -0.04 SEP 28 55102 0.26824 0.33902 0.202703 0.688 0.458 0.02 -0.04 SEP 29 55103 0.26756 0.33665 0.202097 0.915 0.695 0.02 -0.04 SEP 30 55104 0.26658 0.33412 0.201240 0.977 0.991 0.02 -0.04 OCT 1 55105 0.26566 0.33134 0.200222 0.878 1.203 0.02 -0.04 OCT 2 55106 0.26475 0.32832 0.199054 0.647 1.447 0.02 -0.05 OCT 3 55107 0.26392 0.32496 0.197767 0.336 1.555 0.02 -0.05 OCT 4 55108 0.26355 0.32154 0.196396 0.013 1.568 0.02 -0.05 OCT 5 55109 0.26352 0.31803 0.195040 -0.245 1.490 0.02 -0.05 OCT 6 55110 0.26339 0.31447 0.193776 -0.369 1.342 0.02 -0.05 OCT 7 55111 0.26309 0.31084 0.192655 -0.317 1.165 0.02 -0.05 OCT 8 55112 0.26315 0.30730 0.191682 -0.090 1.009 0.02 -0.05 OCT 9 55113 0.26333 0.30373 0.190813 0.260 0.924 0.02 -0.05 OCT 10 55114 0.26326 0.29996 0.189960 0.642 0.943 0.02 -0.05 OCT 11 55115 0.26338 0.29642 0.189015 0.947 1.071 0.02 -0.05 OCT 12 55116 0.26382 0.29312 0.187887 1.077 1.282 0.02 -0.05 OCT 13 55117 0.26388 0.28981 0.186513 0.971 1.528 0.02 -0.05 OCT 14 55118 0.26359 0.28643 0.184884 0.627 1.747 0.02 -0.05 OCT 15 55119 0.26343 0.28311 0.183069 0.102 1.882 0.02 -0.05 OCT 16 55120 0.26313 0.27979 0.181168 -0.499 1.895 0.02 -0.05 OCT 17 55121 0.26279 0.27605 0.179306 -1.049 1.782 0.02 -0.05 OCT 18 55122 0.26281 0.27213 0.177606 -1.434 1.574 0.02 -0.05 OCT 19 55123 0.26283 0.26827 0.176130 -1.586 1.325 0.02 -0.05 OCT 20 55124 0.26271 0.26440 0.174898 -1.492 1.091 0.02 -0.05 OCT 21 55125 0.26240 0.26061 0.173865 -1.191 0.914 0.02 -0.05 OCT 22 55126 0.26191 0.25695 0.172970 -0.752 0.817 0.02 -0.05 OCT 23 55127 0.26136 0.25366 0.172124 -0.256 0.799 0.02 -0.05 OCT 24 55128 0.26083 0.25054 0.171263 0.222 0.852 0.02 -0.05 OCT 25 55129 0.26036 0.24733 0.170312 0.620 0.961 0.02 -0.05 OCT 26 55130 0.25974 0.24400 0.169231 0.890 1.107 0.02 -0.05 OCT 27 55131 0.25922 0.24078 0.167994 1.006 1.270 0.02 -0.05 OCT 28 55132 0.25905 0.23804 0.166597 0.965 1.426 0.02 -0.05 OCT 29 55133 0.25896 0.23534 0.165052 0.783 1.552 0.02 -0.05 OCT 30 55134 0.25859 0.23212 0.163407 0.500 1.629 0.02 -0.05 OCT 31 55135 0.25803 0.22864 0.161713 0.176 1.639 0.02 -0.05 IERS, B 260 (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" AUG 1 55044 0.22175 0.49299 0.230590 0.176 -.080 0.01 0.01 0.02 0.03 0.03 AUG 6 55049 0.23201 0.48000 0.231361 0.310 -.308 0.01 0.01 0.01 0.02 0.03 AUG 11 55054 0.24238 0.46831 0.228704 0.375 -.027 0.01 0.01 0.02 0.04 0.04 AUG 16 55059 0.25147 0.45688 0.227675 0.109 -.123 0.01 0.01 0.02 0.03 0.04 AUG 21 55064 0.25796 0.44480 0.225674 0.071 -.239 0.01 0.01 0.02 0.05 0.04 AUG 26 55069 0.26422 0.43360 0.221928 0.303 -.262 0.01 0.01 0.02 0.02 0.03 AUG 31 55074 0.26985 0.42085 0.221387 0.304 -.082 0.01 0.01 0.02 0.03 0.04 SEP 5 55079 0.27272 0.40628 0.218627 0.217 -.320 0.01 0.01 0.02 0.04 0.04 SEP 10 55084 0.27185 0.39181 0.214641 0.237 -.261 0.01 0.01 0.01 0.02 0.02 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) AUG 1 55044 0.00022 72.921 15128 AUG 6 55049 0.00025 15125 AUG 11 55054 0.00038 15114 AUG 16 55059 0.00027 15124 AUG 21 55064 0.00028 15123 AUG 26 55069 0.00048 15106 AUG 31 55074 0.00058 15098 SEP 5 55079 0.00065 15092 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