BULLETIN B 244 6 june 2008 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 " " s s 0.001" 0.001" (0h UTC) Final Bulletin B values. APR 3 54559 -0.05898 0.49360 -0.365195 -33.365195 -56.6 -7.4 APR 8 54564 -0.04512 0.50246 -0.371076 -33.371076 -58.2 -6.4 APR 13 54569 -0.03419 0.51190 -0.376015 -33.376015 -56.8 -8.1 APR 18 54574 -0.02040 0.51738 -0.380810 -33.380810 -56.0 -7.6 APR 23 54579 -0.00576 0.52751 -0.386299 -33.386299 -56.0 -8.3 APR 28 54584 0.00955 0.53181 -0.391987 -33.391987 -55.3 -8.5 MAY 3 54589 0.02442 0.53775 -0.397722 -33.397722 -55.6 -8.2 Preliminary extension, to be updated weekly in Bulletin A and monthly in Bulletin B. MAY 8 54594 0.03976 0.53992 -0.404073 -33.404073 -56.9 -8.4 MAY 13 54599 0.05282 0.54261 -0.410337 -33.410337 -56.5 -8.2 MAY 18 54604 0.07143 0.54274 -0.416630 -33.416630 -57.0 -7.8 MAY 23 54609 0.08818 0.54158 -0.421804 -33.421804 -56.9 -9.0 MAY 28 54614 0.10753 0.54148 -0.425554 -33.425554 -57.4 -8.0 JUN 2 54619 0.12266 0.53929 -0.428916 -33.428916 -59.4 -7.8 JUN 7 54624 0.13790 0.53490 -0.432399 -33.432399 -58.8 -8.2 JUN 12 54629 0.15161 0.53097 -0.436023 -33.436023 -60.6 -7.5 JUN 17 54634 0.16652 0.52395 -0.439384 -33.439384 -60.9 -8.2 JUN 22 54639 0.17932 0.51537 -0.442276 -33.442276 -61.4 -7.6 JUN 27 54644 0.19402 0.50746 -0.444749 -33.444749 -62.1 -7.7 JUL 2 54649 0.20796 0.49857 -0.446841 -33.446841 -63.4 -7.9 JUL 7 54654 0.21967 0.48891 -0.448557 -33.448557 -63.4 -7.6 JUL 12 54659 0.22781 0.47742 -0.449987 -33.449987 -65.1 -7.7 JUL 17 54664 0.23664 0.46359 -0.451125 -33.451125 -66.1 -7.8 JUL 22 54669 0.24571 0.45062 -0.452041 -33.452041 -66.6 -7.4 JUL 27 54674 0.25411 0.43640 -0.452845 -33.452845 -67.5 -7.6 AUG 1 54679 0.25922 0.42157 -0.453545 -33.453545 -67.4 -7.5 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 244 (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 2006 IERS Annual Report. 2008 MJD x y UT1-UTC UT1-UT1R D dPsi dEpsilon (0 h UTC) " " s ms ms 0.001" 0.001" APR 3 54559 -0.05898 0.49360 -0.363669 1.526 1.564 -56.6 -7.4 APR 4 54560 -0.05609 0.49541 -0.365281 0.997 1.757 -56.4 -7.3 APR 5 54561 -0.05361 0.49708 -0.367119 0.321 1.906 -56.3 -6.8 APR 6 54562 -0.05089 0.49878 -0.369042 -0.358 1.875 -56.6 -6.2 APR 7 54563 -0.04791 0.50049 -0.370824 -0.884 1.595 -57.4 -6.0 APR 8 54564 -0.04512 0.50246 -0.372220 -1.143 1.214 -58.2 -6.4 APR 9 54565 -0.04294 0.50478 -0.373279 -1.103 0.879 -58.4 -7.0 APR 10 54566 -0.04109 0.50688 -0.374051 -0.818 0.645 -58.1 -7.6 APR 11 54567 -0.03890 0.50869 -0.374626 -0.409 0.533 -57.5 -7.9 APR 12 54568 -0.03661 0.51040 -0.375191 -0.015 0.556 -57.0 -8.1 APR 13 54569 -0.03419 0.51190 -0.375765 0.250 0.691 -56.8 -8.1 APR 14 54570 -0.03161 0.51300 -0.376574 0.326 0.940 -56.8 -7.9 APR 15 54571 -0.02905 0.51385 -0.377652 0.206 1.187 -56.7 -7.8 APR 16 54572 -0.02649 0.51463 -0.378917 -0.070 1.306 -56.5 -7.7 APR 17 54573 -0.02365 0.51570 -0.380246 -0.432 1.358 -56.2 -7.7 APR 18 54574 -0.02040 0.51738 -0.381609 -0.799 1.349 -56.0 -7.6 APR 19 54575 -0.01695 0.51942 -0.382944 -1.092 1.294 -56.0 -7.5 APR 20 54576 -0.01374 0.52165 -0.384165 -1.247 1.168 -56.0 -7.6 APR 21 54577 -0.01096 0.52385 -0.385245 -1.225 0.987 -56.0 -7.9 APR 22 54578 -0.00827 0.52584 -0.386147 -1.015 0.837 -56.0 -8.1 APR 23 54579 -0.00576 0.52751 -0.386934 -0.635 0.708 -56.0 -8.3 APR 24 54580 -0.00310 0.52847 -0.387592 -0.131 0.617 -55.9 -8.3 APR 25 54581 -0.00005 0.52918 -0.388194 0.436 0.580 -55.8 -8.3 APR 26 54582 0.00307 0.52996 -0.388790 0.993 0.601 -55.7 -8.5 APR 27 54583 0.00618 0.53077 -0.389385 1.465 0.696 -55.5 -8.6 APR 28 54584 0.00955 0.53181 -0.390203 1.783 0.884 -55.3 -8.5 APR 29 54585 0.01290 0.53322 -0.391216 1.888 1.152 -55.1 -8.3 APR 30 54586 0.01598 0.53473 -0.392514 1.744 1.450 -55.1 -8.3 MAY 1 54587 0.01894 0.53607 -0.394103 1.352 1.652 -55.3 -8.4 MAY 2 54588 0.02173 0.53705 -0.395776 0.769 1.779 -55.5 -8.4 MAY 3 54589 0.02442 0.53775 -0.397616 0.106 1.860 -55.6 -8.2 MAY 4 54590 0.02707 0.53836 -0.399470 -0.490 1.807 -56.1 -7.8 MAY 5 54591 0.02998 0.53861 -0.401151 -0.881 1.576 -56.7 -7.6 MAY 6 54592 0.03350 0.53880 -0.402576 -0.988 1.253 -57.3 -7.7 MAY 7 54593 0.03688 0.53934 -0.403656 -0.820 0.952 -57.3 -8.1 MAY 8 54594 0.03976 0.53992 -0.404550 -0.477 0.815 -56.9 -8.4 MAY 9 54595 0.04247 0.54071 -0.405429 -0.101 0.875 -56.5 -8.5 MAY 10 54596 0.04481 0.54152 -0.406369 0.171 1.025 -56.3 -8.6 MAY 11 54597 0.04730 0.54188 -0.407454 0.257 1.270 -56.2 -8.6 MAY 12 54598 0.05001 0.54230 -0.408895 0.141 1.498 -56.4 -8.5 MAY 13 54599 0.05282 0.54261 -0.410473 -0.136 1.632 -56.5 -8.2 MAY 14 54600 0.05636 0.54268 -0.412142 -0.501 1.684 -56.6 -8.0 MAY 15 54601 0.06024 0.54269 -0.413802 -0.873 1.631 -56.6 -7.9 MAY 16 54602 0.06413 0.54269 -0.415404 -1.178 1.525 -56.6 -7.9 MAY 17 54603 0.06795 0.54271 -0.416835 -1.355 1.318 -56.8 -7.8 MAY 18 54604 0.07143 0.54274 -0.417995 -1.365 1.097 -57.0 -7.8 MAY 19 54605 0.07459 0.54276 -0.419053 -1.191 0.893 -57.1 -8.1 MAY 20 54606 0.07766 0.54272 -0.419792 -0.844 0.643 -57.1 -8.5 MAY 21 54607 0.08092 0.54243 -0.420325 -0.362 0.453 -56.8 -9.0 MAY 22 54608 0.08434 0.54193 -0.420784 0.197 0.328 -56.7 -9.2 MAY 23 54609 0.08818 0.54158 -0.421042 0.763 0.279 -56.9 -9.0 MAY 24 54610 0.09222 0.54154 -0.421320 1.262 0.338 -57.6 -8.5 MAY 25 54611 0.09609 0.54134 -0.421726 1.628 0.499 -57.6 -8.4 MAY 26 54612 0.10002 0.54131 -0.422296 1.807 0.703 -57.5 -8.3 MAY 27 54613 0.10378 0.54156 -0.423078 1.766 0.868 -57.4 -8.1 MAY 28 54614 0.10753 0.54148 -0.424056 1.499 1.022 -57.4 -8.0 MAY 29 54615 0.11129 0.54125 -0.425141 1.039 1.171 -57.5 -8.1 MAY 30 54616 0.11453 0.54070 -0.426318 0.463 1.272 -57.8 -8.2 MAY 31 54617 0.11733 0.54010 -0.427587 -0.111 1.228 -58.2 -8.1 JUN 1 54618 0.11999 0.53979 -0.428736 -0.552 1.034 -58.8 -7.9 JUN 2 54619 0.12266 0.53929 -0.429675 -0.759 0.806 -59.4 -7.8 JUN 3 54620 0.12559 0.53852 -0.430363 -0.697 0.574 -59.8 -7.9 JUN 4 54621 0.12918 0.53738 -0.430805 -0.423 0.348 -59.7 -8.2 JUN 5 54622 0.13256 0.53628 -0.431066 -0.064 0.159 -59.4 -8.2 JUN 6 54623 0.13520 0.53557 -0.431461 0.233 0.194 -59.1 -8.2 JUN 7 54624 0.13790 0.53490 -0.432048 0.351 0.319 -58.8 -8.2 JUN 8 54625 0.14073 0.53424 -0.432871 0.248 0.477 -58.8 -8.1 JUN 9 54626 0.14337 0.53365 -0.433895 -0.046 0.595 -59.1 -8.0 JUN 10 54627 0.14593 0.53297 -0.435032 -0.451 0.635 -59.7 -7.6 JUN 11 54628 0.14869 0.53206 -0.436177 -0.873 0.592 -60.3 -7.5 JUN 12 54629 0.15161 0.53097 -0.437248 -1.226 0.480 -60.6 -7.5 JUN 13 54630 0.15466 0.52968 -0.438177 -1.448 0.321 -60.4 -7.6 JUN 14 54631 0.15774 0.52835 -0.438920 -1.501 0.137 -60.2 -7.7 JUN 15 54632 0.16071 0.52692 -0.439461 -1.368 -0.051 -60.3 -7.8 JUN 16 54633 0.16366 0.52541 -0.439805 -1.058 -0.219 -60.6 -8.0 JUN 17 54634 0.16652 0.52395 -0.439985 -0.601 -0.344 -60.9 -8.2 JUN 18 54635 0.16931 0.52235 -0.440051 -0.053 -0.406 -61.2 -8.4 JUN 19 54636 0.17207 0.52068 -0.440079 0.517 -0.394 -61.3 -8.3 JUN 20 54637 0.17461 0.51898 -0.440138 1.035 -0.310 -61.4 -8.0 JUN 21 54638 0.17694 0.51720 -0.440302 1.431 -0.163 -61.4 -7.7 JUN 22 54639 0.17932 0.51537 -0.440625 1.651 0.028 -61.4 -7.6 JUN 23 54640 0.18205 0.51361 -0.441135 1.664 0.236 -61.6 -7.6 JUN 24 54641 0.18508 0.51198 -0.441845 1.466 0.431 -61.7 -7.6 JUN 25 54642 0.18815 0.51043 -0.442717 1.088 0.578 -61.7 -7.6 JUN 26 54643 0.19115 0.50893 -0.443691 0.594 0.643 -61.8 -7.7 JUN 27 54644 0.19402 0.50746 -0.444670 0.079 0.602 -62.1 -7.7 JUN 28 54645 0.19672 0.50592 -0.445549 -0.348 0.449 -62.5 -7.7 JUN 29 54646 0.19933 0.50417 -0.446221 -0.586 0.213 -63.0 -7.7 JUN 30 54647 0.20200 0.50238 -0.446637 -0.584 -0.044 -63.4 -7.7 JUL 1 54648 0.20495 0.50052 -0.446816 -0.361 -0.243 -63.5 -7.8 JUL 2 54649 0.20796 0.49857 -0.446851 -0.009 -0.318 -63.4 -7.9 JUL 3 54650 0.21089 0.49664 -0.446883 0.330 -0.245 -63.2 -7.8 JUL 4 54651 0.21367 0.49475 -0.447047 0.522 -0.056 -63.1 -7.6 JUL 5 54652 0.21606 0.49289 -0.447424 0.484 0.176 -63.1 -7.5 JUL 6 54653 0.21805 0.49095 -0.448022 0.216 0.372 -63.1 -7.6 JUL 7 54654 0.21967 0.48891 -0.448770 -0.213 0.473 -63.4 -7.6 JUL 8 54655 0.22130 0.48670 -0.449563 -0.698 0.463 -64.1 -7.5 JUL 9 54656 0.22292 0.48449 -0.450295 -1.133 0.356 -64.9 -7.4 JUL 10 54657 0.22441 0.48235 -0.450884 -1.436 0.185 -65.3 -7.5 JUL 11 54658 0.22599 0.48000 -0.451285 -1.561 -0.018 -65.3 -7.6 JUL 12 54659 0.22781 0.47742 -0.451477 -1.490 -0.226 -65.1 -7.7 JUL 13 54660 0.22975 0.47476 -0.451466 -1.230 -0.415 -65.1 -7.6 JUL 14 54661 0.23160 0.47217 -0.451286 -0.810 -0.564 -65.3 -7.6 JUL 15 54662 0.23341 0.46952 -0.450983 -0.282 -0.653 -65.6 -7.7 JUL 16 54663 0.23513 0.46663 -0.450629 0.288 -0.667 -65.9 -7.8 JUL 17 54664 0.23664 0.46359 -0.450300 0.825 -0.604 -66.1 -7.8 JUL 18 54665 0.23820 0.46077 -0.450068 1.252 -0.471 -66.2 -7.5 JUL 19 54666 0.23997 0.45822 -0.449999 1.510 -0.284 -66.2 -7.3 JUL 20 54667 0.24181 0.45578 -0.450136 1.559 -0.073 -66.2 -7.2 JUL 21 54668 0.24367 0.45329 -0.450478 1.394 0.128 -66.3 -7.2 JUL 22 54669 0.24571 0.45062 -0.450998 1.044 0.280 -66.6 -7.4 JUL 23 54670 0.24780 0.44784 -0.451635 0.575 0.350 -66.8 -7.5 JUL 24 54671 0.24966 0.44505 -0.452293 0.083 0.319 -66.9 -7.6 JUL 25 54672 0.25132 0.44218 -0.452870 -0.331 0.186 -67.1 -7.6 JUL 26 54673 0.25282 0.43929 -0.453271 -0.576 -0.024 -67.3 -7.6 JUL 27 54674 0.25411 0.43640 -0.453441 -0.597 -0.262 -67.5 -7.6 JUL 28 54675 0.25519 0.43332 -0.453391 -0.397 -0.463 -67.6 -7.7 JUL 29 54676 0.25612 0.43024 -0.453181 -0.047 -0.566 -67.6 -7.8 JUL 30 54677 0.25715 0.42728 -0.452938 0.337 -0.534 -67.4 -7.8 JUL 31 54678 0.25825 0.42437 -0.452792 0.618 -0.372 -67.4 -7.7 AUG 1 54679 0.25922 0.42157 -0.452855 0.690 -0.132 -67.4 -7.5 IERS, B 244 (3) 3 - NORMAL VALUES OF THE EARTH ORIENTATION PARAMETERS AT FIVE-DAY INTERVALS (IERS evaluation). Raw normal values Uncertainties 2008 MJD x y UT1-UTC dPsi dEps x y UT1 dPsi dEps (0 h UTC) " " s 0.001" 0.001" 0.0001s 0.001" APR 3 54559 -0.05899 0.49359 -0.363668 -56.55 -7.43 0.01 0.01 0.01 0.04 0.03 APR 8 54564 -0.04513 0.50245 -0.372210 -58.39 -6.29 0.02 0.02 0.01 0.08 0.06 APR 13 54569 -0.03420 0.51188 -0.375763 -56.95 -8.01 0.01 0.01 0.01 0.05 0.04 APR 18 54574 -0.02041 0.51736 -0.381610 -55.97 -7.47 0.01 0.01 0.02 0.19 0.11 APR 23 54579 -0.00576 0.52749 -0.386930 -56.04 -8.21 0.01 0.01 0.01 0.05 0.04 APR 28 54584 0.00953 0.53180 -0.390201 -55.33 -8.50 0.01 0.01 0.01 0.03 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 2008 MJD s (microrad/s) APR 3 54559 0.00115 72.921 15050 APR 8 54564 0.00111 15053 APR 13 54569 0.00087 15073 APR 18 54574 0.00101 15061 APR 23 54579 0.00116 15048 APR 28 54584 0.00111 15053 MAY 3 54589 0.00121 15045 5 - INFORMATION ON TIME SCALES No leap second will be introduced in UTC on 30 June 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 244 (4) 6 - SUMMARY OF CONTRIBUTED EARTH ORIENTATION PARAMETERS SERIES This section gives the average precision of the various series with respect to the combination / The periods covered start at the beginning of the first month 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 0.06 0.06 0.03 - 0.12 0.05 9 54560.27 to 54586.27 0.18 0.16 0.04 - 0.18 0.07 EOP(BKG) 3 R 4 0.19 0.08 0.11 - 0.21 0.08 11 54559.23 to 54586.27 0.11 0.12 0.05 - 0.23 0.07 EOP(BKG) 3 R 2 - - 0.09 - - - 33 54559.79 to 54588.79 - - 0.12 - - - EOP(USNO) 5 R 1 - - 0.10 - - - 33 54559.79 to 54588.79 - - 0.13 - - - EOP(GSFC) 6 R 1 - - 0.10 - - - 33 54559.79 to 54588.79 - - 0.09 - - - EOP(IAA) 5 R 2 0.05 0.06 0.02 - 0.10 0.04 9 54560.27 to 54586.27 0.11 0.12 0.03 - 0.16 0.06 EOP(IAA) 5 R 1 - - 0.09 - - - 33 54559.79 to 54588.79 - - 0.13 - - - EOP(MAO) 3 R 1 0.06 0.07 0.03 - 0.12 0.04 9 54560.26 to 54586.33 0.09 0.12 0.04 - 0.17 0.10 EOP(GSFC) 7 R 1 0.22 0.08 0.12 - 0.23 0.08 11 54559.23 to 54586.27 0.20 0.36 0.05 - 0.10 0.05 EOP(IVS) 2 R 1 0.04 0.04 0.02 - 0.08 0.04 9 54560.27 to 54586.27 0.10 0.12 0.06 - 0.14 0.04 GPS EOP(CODE) 98 P 1 0.00 0.01 - 0.07 - - 30 54559.50 to 54588.50 0.03 0.03 - 0.14 - - EOP(EMR) 96 P 3 0.03 0.03 - 0.04 - - 30 54559.50 to 54588.50 0.05 0.09 - 0.19 - - EOP(ESOC) 96 P 1 0.26 0.26 - 0.02 - - 30 54559.50 to 54588.50 0.04 0.03 - 0.29 - - EOP(GFZ) 96 P 2 0.00 0.00 - 0.01 - - 30 54559.50 to 54588.50 0.03 0.03 - 0.08 - - EOP(IAA) 1 P 1 0.03 0.03 - 0.06 - - 30 54559.50 to 54588.50 0.13 0.20 - 0.32 - - EOP(JPL) 96 P 3 0.01 0.01 - 0.06 - - 30 54559.50 to 54588.50 0.07 0.18 - 0.19 - - EOP(NOAA) 96 P 1 0.00 0.00 - 0.33 - - 30 54559.50 to 54588.50 0.15 0.09 - 0.16 - - EOP(SIO) 96 P 1 0.01 0.01 - 0.04 - - 30 54559.50 to 54588.50 0.04 0.03 - 0.16 - - EOP(IGS R)96 P 2 0.02 0.02 0.15 0.04 - - 30 54559.50 to 54588.50 0.04 0.03 0.49 0.07 - - EOP(IGS) 7 P 1 0.02 0.02 - 0.05 - - 30 54559.50 to 54588.50 0.02 0.01 - 0.09 - - SLR EOP(ASI) 3 L 2 0.08 0.07 - 0.16 - - 30 54559.50 to 54588.50 0.19 0.17 - 0.47 - - EOP(ILRS) 5 L 1 0.06 0.06 - 0.64 - - 30 54559.50 to 54588.50 0.15 0.29 - 0.49 - - EOP(IAA) 2 L 1 0.04 0.04 0.02 0.02 - - 31 54559.00 to 54589.00 0.19 0.23 0.38 0.14 - - EOP(MCC) 97 L 1 0.16 0.16 - 0.20 - - 31 54559.00 to 54589.00 0.18 0.13 - 1.66 - - Bulletin A EOP(NEOS) 97 C 1 0.03 0.03 0.04 - - - 31 54559.00 to 54589.00 0.05 0.09 0.11 - - -