BULLETIN B 204 2 february 2005 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 2004/05 " " s s 0.001" 0.001" (0h UTC) Final Bulletin B values. DEC 5 53344 0.19057 0.28426 -0.491303 -32.491303 -54.8 -2.1 DEC 10 53349 0.18234 0.27436 -0.494165 -32.494165 -55.7 -1.5 DEC 15 53354 0.17323 0.26419 -0.497056 -32.497056 -55.6 -1.8 DEC 20 53359 0.16757 0.25580 -0.499855 -32.499855 -56.2 -1.2 DEC 25 53364 0.15980 0.24720 -0.502373 -32.502373 -55.6 -0.9 DEC 30 53369 0.15116 0.24079 -0.504411 -32.504411 -54.8 -1.6 JAN 4 53374 0.14846 0.23466 -0.506278 -32.506278 -54.5 -1.3 Preliminary extension, to be updated weekly in Bulletin A and monthly in Bulletin B. JAN 9 53379 0.14188 0.22671 -0.508403 -32.508403 -55.9 -1.3 JAN 14 53384 0.13196 0.22086 -0.511369 -32.511369 -54.8 -1.4 JAN 19 53389 0.12412 0.21551 -0.514585 -32.514585 -56.3 -1.2 JAN 24 53394 0.11238 0.21137 -0.517951 -32.517951 -55.1 -2.3 JAN 29 53399 0.10060 0.20881 -0.519965 -32.519965 -52.5 -0.3 FEB 3 53404 0.08796 0.20846 -0.521828 -32.521828 -53.6 -0.8 FEB 8 53409 0.07733 0.20837 -0.523933 -32.523933 -52.9 -1.4 FEB 13 53414 0.06679 0.20890 -0.526115 -32.526115 -52.8 -1.1 FEB 18 53419 0.05632 0.21026 -0.528404 -32.528404 -53.6 -1.8 FEB 23 53424 0.04593 0.21242 -0.530838 -32.530838 -52.3 -2.2 FEB 28 53429 0.03563 0.21539 -0.533424 -32.533424 -52.1 -1.9 MAR 5 53434 0.02551 0.21912 -0.536186 -32.536186 -52.9 -2.6 MAR 10 53439 0.01560 0.22359 -0.539116 -32.539116 -51.1 -2.8 MAR 15 53444 0.00594 0.22877 -0.542221 -32.542221 -52.4 -2.7 MAR 20 53449 -0.00342 0.23462 -0.545479 -32.545479 -51.7 -3.8 MAR 25 53454 -0.01243 0.24109 -0.548851 -32.548851 -50.6 -3.4 MAR 30 53459 -0.02107 0.24815 -0.552338 -32.552338 -51.6 -3.6 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 204 (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 2003 IERS Annual Report. 2004/05 MJD x y UT1-UTC UT1-UT1R D dPsi dEpsilon (0 h UTC) " " s ms ms 0.001" 0.001" DEC 5 53344 0.19057 0.28426 -0.489799 1.504 0.770 -54.8 -2.1 DEC 6 53345 0.18894 0.28248 -0.490745 1.176 0.955 -54.7 -1.9 DEC 7 53346 0.18732 0.28024 -0.491721 0.713 1.056 -54.8 -1.8 DEC 8 53347 0.18644 0.27820 -0.492824 0.200 1.098 -55.1 -1.6 DEC 9 53348 0.18412 0.27692 -0.493878 -0.251 0.952 -55.4 -1.6 DEC 10 53349 0.18234 0.27436 -0.494695 -0.530 0.727 -55.7 -1.5 DEC 11 53350 0.18027 0.27253 -0.495320 -0.566 0.502 -56.0 -1.6 DEC 12 53351 0.17857 0.27046 -0.495716 -0.364 0.269 -56.1 -1.6 DEC 13 53352 0.17658 0.26850 -0.495899 -0.014 0.161 -56.0 -1.7 DEC 14 53353 0.17487 0.26636 -0.496090 0.342 0.278 -55.9 -1.8 DEC 15 53354 0.17323 0.26419 -0.496497 0.558 0.493 -55.6 -1.8 DEC 16 53355 0.17192 0.26208 -0.497094 0.543 0.710 -55.4 -1.8 DEC 17 53356 0.17030 0.26039 -0.497908 0.285 0.922 -55.4 -1.7 DEC 18 53357 0.16939 0.25870 -0.498908 -0.156 1.054 -55.6 -1.6 DEC 19 53358 0.16868 0.25721 -0.499979 -0.676 1.072 -55.9 -1.4 DEC 20 53359 0.16757 0.25580 -0.501016 -1.161 0.996 -56.2 -1.2 DEC 21 53360 0.16595 0.25386 -0.501945 -1.521 0.780 -56.3 -1.0 DEC 22 53361 0.16465 0.25208 -0.502563 -1.696 0.567 -56.2 -0.8 DEC 23 53362 0.16302 0.25002 -0.503076 -1.659 0.393 -55.9 -0.7 DEC 24 53363 0.16165 0.24854 -0.503355 -1.418 0.143 -55.7 -0.8 DEC 25 53364 0.15980 0.24720 -0.503376 -1.003 -.051 -55.6 -0.9 DEC 26 53365 0.15842 0.24626 -0.503274 -0.470 -.135 -55.6 -1.2 DEC 27 53366 0.15638 0.24552 -0.503132 0.111 -.149 -55.5 -1.4 DEC 28 53367 0.15454 0.24363 -0.503001 0.666 -.096 -55.4 -1.5 DEC 29 53368 0.15304 0.24223 -0.502962 1.125 -.019 -55.1 -1.6 DEC 30 53369 0.15116 0.24079 -0.502979 1.432 0.112 -54.8 -1.6 DEC 31 53370 0.15014 0.23904 -0.503192 1.555 0.337 -54.5 -1.6 JAN 1 53371 0.14924 0.23787 -0.503652 1.487 0.552 -54.2 -1.6 JAN 2 53372 0.14877 0.23671 -0.504286 1.245 0.692 -54.1 -1.5 JAN 3 53373 0.14879 0.23565 -0.505018 0.870 0.794 -54.2 -1.4 JAN 4 53374 0.14846 0.23466 -0.505848 0.429 0.878 -54.5 -1.3 JAN 5 53375 0.14803 0.23313 -0.506741 0.013 0.791 -54.9 -1.2 JAN 6 53376 0.14693 0.23164 -0.507398 -0.282 0.575 -55.3 -1.1 JAN 7 53377 0.14511 0.22976 -0.507871 -0.374 0.388 -55.7 -1.0 JAN 8 53378 0.14353 0.22780 -0.508176 -0.237 0.212 -55.9 -1.1 JAN 9 53379 0.14188 0.22671 -0.508325 0.078 0.160 -55.9 -1.3 JAN 10 53380 0.13997 0.22544 -0.508546 0.450 0.204 -55.8 -1.5 JAN 11 53381 0.13736 0.22432 -0.508784 0.724 0.381 -55.5 -1.7 JAN 12 53382 0.13535 0.22300 -0.509341 0.775 0.707 -55.1 -1.8 JAN 13 53383 0.13360 0.22182 -0.510199 0.549 0.984 -54.9 -1.7 JAN 14 53384 0.13196 0.22086 -0.511282 0.087 1.148 -54.8 -1.4 JAN 15 53385 0.13006 0.21962 -0.512451 -0.503 1.226 -55.0 -1.2 JAN 16 53386 0.12871 0.21837 -0.513689 -1.085 1.175 -55.3 -1.0 JAN 17 53387 0.12740 0.21724 -0.514768 -1.543 1.014 -55.7 -0.9 JAN 18 53388 0.12585 0.21618 -0.515701 -1.800 0.824 -56.1 -0.9 JAN 19 53389 0.12412 0.21551 -0.516413 -1.828 0.594 -56.3 -1.2 JAN 20 53390 0.12163 0.21515 -0.516896 -1.633 0.401 -56.2 -1.5 JAN 21 53391 0.11932 0.21382 -0.517230 -1.252 0.254 -56.1 -1.8 JAN 22 53392 0.11712 0.21321 -0.517424 -0.738 0.124 -55.8 -2.1 JAN 23 53393 0.11474 0.21221 -0.517501 -0.160 0.047 -55.5 -2.3 JAN 24 53394 0.11238 0.21137 -0.517543 0.409 0.028 -55.1 -2.3 JAN 25 53395 0.11001 0.21048 -0.517579 0.894 0.019 -53.5 -0.9 JAN 26 53396 0.10759 0.20962 -0.517597 1.237 0.149 -53.1 -0.7 JAN 27 53397 0.10542 0.20913 -0.517747 1.400 0.429 -52.8 -0.5 IERS, B 204 (3) 3 - NORMAL VALUES OF THE EARTH ORIENTATION PARAMETERS AT FIVE-DAY INTERVALS (IERS evaluation). Raw normal values Uncertainties 2004/05 MJD x y UT1-UTC dPsi dEps x y UT1 dPsi dEps (0 h UTC) " " s 0.001" 0.001" 0.0001s 0.001" DEC 5 53344 0.19059 0.28429 -0.489836 -54.72 -2.11 0.02 0.02 0.02 0.08 0.03 DEC 10 53349 0.18233 0.27437 -0.494696 -55.72 -1.54 0.02 0.02 0.02 0.26 0.09 DEC 15 53354 0.17324 0.26419 -0.496497 -55.58 -1.82 0.01 0.01 0.01 0.04 0.02 DEC 20 53359 0.16757 0.25580 -0.501017 -56.21 -1.25 0.01 0.02 0.01 0.08 0.04 DEC 25 53364 0.15980 0.24720 -0.503375 -55.60 -0.89 0.01 0.01 0.03 0.09 0.04 DEC 30 53369 0.15119 0.24079 -0.502979 -54.81 -1.62 0.02 0.02 0.02 0.07 0.03 JAN 4 53374 0.14846 0.23466 -0.505847 -54.51 -1.31 0.01 0.02 0.02 0.08 0.03 JAN 9 53379 0.14189 0.22673 -0.508325 -55.90 -1.25 0.01 0.02 0.02 0.05 0.02 JAN 14 53384 0.13196 0.22087 -0.511282 -54.78 -1.42 0.01 0.01 0.02 0.09 0.04 JAN 19 53389 0.12412 0.21550 -0.516415 -56.29 -1.16 0.02 0.02 0.03 0.07 0.03 JAN 24 53394 0.11239 0.21138 -0.517544 - - 0.02 0.02 0.04 - - 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 2004/05 MJD s (microrad/s) DEC 5 53344 0.00054 72.921 15102 DEC 10 53349 0.00057 15099 DEC 15 53354 0.00061 15095 DEC 20 53359 0.00057 15099 DEC 25 53364 0.00044 15110 DEC 30 53369 0.00034 15118 JAN 4 53374 0.00044 15110 5 - INFORMATION ON TIME SCALES No leap second was introduced in UTC on 31 December 2004. No leap second will be introduced in UTC on 30 June 2005. 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 204 (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 0.10 0.09 0.04 - 0.19 0.07 11 53346.23 to 53384.27 0.33 0.16 0.07 - 0.25 0.07 EOP(BKG) 3 R 4 0.11 0.10 0.04 - 0.20 0.08 13 53346.23 to 53389.21 0.22 0.21 0.07 - 0.24 0.09 EOP(BKG) 3 R 2 - - 0.11 - - - 36 53344.33 to 53394.79 - - 0.11 - - - EOP(GSFC) 4 R 2 0.09 0.08 0.03 - 0.19 0.07 9 53346.23 to 53374.20 0.11 0.06 0.10 - 0.16 0.04 EOP(GSFC) 4 R 1 - - 0.13 - - - 31 53344.33 to 53386.33 - - 0.12 - - - EOP(IAA) 3 R 4 0.13 0.10 0.05 - - - 13 53346.23 to 53389.21 0.16 0.15 0.06 - - - EOP(IAA) 3 R 3 - - 0.13 - - - 35 53344.33 to 53394.79 - - 0.11 - - - EOP(SPBU) 3 R 3 0.32 0.35 0.19 - 0.10 0.04 11 53346.23 to 53381.21 0.08 0.16 0.08 - 0.32 0.08 EOP(SPBU) 2 R 1 - - 0.14 - - - 22 53346.79 to 53384.81 - - 0.13 - - - EOP(MAO) 3 R 1 0.10 0.09 0.04 - - - 12 53346.22 to 53384.30 0.38 0.26 0.10 - - - EOP(USNO) 4 R 1 0.09 0.08 0.03 - 0.21 0.08 13 53346.23 to 53389.21 0.14 0.09 0.06 - 0.15 0.08 EOP(IVS) 0 R 1 0.08 0.07 0.03 - 0.13 0.06 9 53346.00 to 53374.00 0.24 0.06 0.09 - 0.13 0.07 GPS EOP(CODE) 98 P 1 0.02 0.02 - 0.14 - - 53 53344.50 to 53396.50 0.04 0.09 - 0.20 - - EOP(EMR) 96 P 3 0.03 0.03 - 0.04 - - 53 53344.50 to 53396.50 0.05 0.17 - 0.35 - - EOP(ESOC) 96 P 1 0.03 0.03 - 0.53 - - 52 53344.50 to 53395.50 0.07 0.13 - 0.42 - - EOP(GFZ) 96 P 2 0.01 0.01 - 0.01 - - 53 53344.50 to 53396.50 0.06 0.04 - 0.29 - - EOP(IAA) 1 P 1 0.03 0.03 - 0.06 - - 51 53344.50 to 53394.50 0.14 0.44 - 0.35 - - EOP(JPL) 96 P 3 0.02 0.02 - 0.10 - - 53 53344.50 to 53396.50 0.19 0.04 - 0.17 - - EOP(NOAA) 96 P 1 0.01 0.01 - 0.02 - - 47 53344.50 to 53390.50 0.09 0.11 - 0.18 - - EOP(SIO) 96 P 1 0.05 0.05 - 0.11 - - 53 53344.50 to 53396.50 0.07 0.06 - 0.21 - - EOP(IGS F)95 P 2 0.02 0.03 0.09 0.05 - - 42 53344.50 to 53385.50 0.06 0.11 0.16 0.17 - - EOP(IGS R)96 P 2 0.04 0.04 0.17 0.06 - - 53 53344.50 to 53396.50 0.10 0.11 0.67 0.17 - - EOP(IERS) 97 P 1 0.04 0.04 0.18 0.12 - - 53 53344.50 to 53396.50 0.02 0.02 0.42 0.17 - - SLR EOP(ASI) 3 L 2 0.09 0.11 - 0.26 - - 52 53344.50 to 53395.50 0.24 0.31 - 1.24 - - EOP(ILRS) 5 L 1 0.12 0.13 - 0.27 - - 49 53344.50 to 53392.50 0.20 0.27 - 0.77 - - EOP(CSR) 95 L 1 0.37 0.37 0.31 - - - 8 53346.07 to 53367.10 0.45 0.20 0.58 - - - EOP(DUT) 98 L 1 0.12 0.13 - - - - 54 53344.00 to 53397.00 0.44 0.35 - - - - EOP(IAA) 2 L 1 0.04 0.04 0.02 0.02 - - 54 53344.00 to 53397.00 0.26 0.20 0.34 0.22 - - EOP(MCC) 97 L 1 0.06 0.07 - 0.10 - - 47 53344.00 to 53390.00 0.20 0.22 - 0.57 - - Bulletin A EOP(NEOS) 97 C 1 0.07 0.07 0.07 - - - 54 53344.00 to 53397.00 0.10 0.11 0.40 - - -