BULLETIN B 184 2 June 2003 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 2003 " " s s 0.001" 0.001" (0h UTC) Final Bulletin B values. APR 5 52734 -.12458 .44754 -.345994 -32.345994 -50.8 -3.7 APR 10 52739 -.11468 .46235 -.350336 -32.350336 -50.7 -4.4 APR 15 52744 -.10526 .47528 -.354106 -32.354106 -49.8 -4.8 APR 20 52749 -.09549 .48566 -.357231 -32.357231 -50.9 -4.4 APR 25 52754 -.08277 .49577 -.359358 -32.359358 -50.5 -4.9 APR 30 52759 -.07027 .50618 -.361755 -32.361755 -50.8 -3.9 MAY 5 52764 -.05314 .51542 -.364158 -32.364158 -50.7 -5.1 Preliminary extension, to be updated weekly in Bulletin A and monthly in Bulletin B. MAY 10 52769 -.03968 .52505 -.366134 -32.366134 -50.1 -5.2 MAY 15 52774 -.03042 .53187 -.368138 -32.368138 -51.2 -5.1 MAY 20 52779 -.01847 .53752 -.370712 -32.370712 -51.8 -5.0 MAY 25 52784 -.00398 .54132 -.373158 -32.373158 -50.9 -4.3 MAY 30 52789 .01266 .54462 -.374950 -32.374950 -52.8 -4.3 JUN 4 52794 .02721 .54778 -.376282 -32.376282 -50.7 -5.3 JUN 9 52799 .04265 .54941 -.377640 -32.377640 -50.3 -4.9 JUN 14 52804 .05795 .54986 -.378746 -32.378746 -53.2 -4.7 JUN 19 52809 .07315 .54921 -.379578 -32.379578 -52.4 -5.1 JUN 24 52814 .08812 .54746 -.380135 -32.380135 -53.5 -4.5 JUN 29 52819 .10279 .54463 -.380424 -32.380424 -54.8 -4.7 JUL 4 52824 .11706 .54074 -.380501 -32.380501 -54.1 -4.9 JUL 9 52829 .13086 .53582 -.380364 -32.380364 -56.1 -4.4 JUL 14 52834 .14410 .52990 -.380074 -32.380074 -57.2 -4.7 JUL 19 52839 .15672 .52303 -.379662 -32.379662 -56.9 -4.5 JUL 24 52844 .16865 .51524 -.379166 -32.379166 -58.7 -4.3 JUL 29 52849 .17981 .50660 -.378647 -32.378647 -59.0 -4.7 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 184 (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 2001 IERS Annual Report. 2003 MJD x y UT1-UTC UT1-UT1R D dPsi dEpsilon (0 h UTC) " " s ms ms 0.001" 0.001" APR 5 52734 -.12458 .44754 -.346617 -.623 .777 -50.8 -3.7 APR 6 52735 -.12208 .45076 -.347331 -.440 .653 -50.9 -3.9 APR 7 52736 -.11978 .45405 -.347926 -.115 .512 -51.0 -4.1 APR 8 52737 -.11759 .45699 -.348370 .322 .378 -51.1 -4.2 APR 9 52738 -.11596 .45971 -.348701 .820 .315 -50.9 -4.3 APR 10 52739 -.11468 .46235 -.349026 1.310 .343 -50.7 -4.4 APR 11 52740 -.11323 .46485 -.349418 1.705 .450 -50.3 -4.6 APR 12 52741 -.11141 .46749 -.349957 1.914 .654 -49.9 -4.7 APR 13 52742 -.10929 .47029 -.350747 1.856 .949 -49.6 -4.9 APR 14 52743 -.10717 .47288 -.351856 1.499 1.253 -49.6 -4.9 APR 15 52744 -.10526 .47528 -.353226 .880 1.454 -49.8 -4.8 APR 16 52745 -.10379 .47741 -.354714 .114 1.485 -50.2 -4.6 APR 17 52746 -.10220 .47923 -.356137 -.634 1.304 -50.7 -4.3 APR 18 52747 -.10029 .48116 -.357275 -1.200 1.013 -51.0 -4.2 APR 19 52748 -.09802 .48339 -.358142 -1.481 .702 -51.1 -4.2 APR 20 52749 -.09549 .48566 -.358689 -1.458 .364 -50.9 -4.4 APR 21 52750 -.09304 .48774 -.358902 -1.198 .083 -50.7 -4.7 APR 22 52751 -.09070 .48962 -.358896 -.812 -.026 -50.5 -4.9 APR 23 52752 -.08849 .49170 -.358886 -.419 .062 -50.4 -5.1 APR 24 52753 -.08590 .49374 -.359044 -.111 .200 -50.4 -5.1 APR 25 52754 -.08277 .49577 -.359296 .062 .323 -50.5 -4.9 APR 26 52755 -.07999 .49796 -.359689 .086 .475 -50.4 -4.7 APR 27 52756 -.07759 .50016 -.360236 -.019 .618 -50.3 -4.5 APR 28 52757 -.07519 .50244 -.360908 -.214 .717 -50.3 -4.2 APR 29 52758 -.07284 .50442 -.361651 -.445 .760 -50.4 -4.0 APR 30 52759 -.07027 .50618 -.362408 -.653 .737 -50.8 -3.9 MAY 1 52760 -.06685 .50802 -.363108 -.782 .625 -51.1 -3.9 MAY 2 52761 -.06302 .50987 -.363645 -.787 .434 -51.2 -4.1 MAY 3 52762 -.05938 .51161 -.363971 -.643 .223 -51.1 -4.4 MAY 4 52763 -.05611 .51343 -.364095 -.349 .051 -50.9 -4.8 MAY 5 52764 -.05314 .51542 -.364086 .072 -.048 -50.7 -5.1 MAY 6 52765 -.05007 .51753 -.364018 .572 -.098 -50.5 -5.3 MAY 7 52766 -.04713 .51971 -.363914 1.086 -.107 -50.5 -5.3 MAY 8 52767 -.04460 .52160 -.363832 1.538 -.015 -50.5 -5.3 MAY 9 52768 -.04210 .52330 -.363911 1.847 .173 -50.4 -5.3 MAY 10 52769 -.03968 .52505 -.364201 1.933 .402 -50.1 -5.2 MAY 11 52770 -.03768 .52659 -.364726 1.747 .663 -49.9 -5.3 MAY 12 52771 -.03600 .52794 -.365516 1.287 .936 -49.8 -5.3 MAY 13 52772 -.03440 .52929 -.366563 .621 1.143 -50.0 -5.3 MAY 14 52773 -.03256 .53058 -.367749 -.119 1.200 -50.6 -5.2 MAY 15 52774 -.03042 .53187 -.368908 -.770 1.081 -51.2 -5.1 MAY 16 52775 -.02816 .53314 -.369874 -1.193 .818 -51.9 -5.0 MAY 17 52776 -.02585 .53430 -.370536 -1.320 .487 -52.3 -4.9 MAY 18 52777 -.02357 .53552 -.370869 -1.174 .215 -52.4 -4.9 MAY 19 52778 -.02124 .53659 -.371007 -.851 .139 -52.5 -4.6 MAY 20 52779 -.01847 .53752 -.371189 -.477 .206 -51.8 -5.0 MAY 21 52780 -.01541 .53859 -.371450 -.164 .263 -51.2 -5.2 MAY 22 52781 -.01249 .53963 -.371729 .019 .371 -50.7 -5.3 MAY 23 52782 -.00977 .54042 -.372191 .050 .526 -50.5 -5.1 MAY 24 52783 -.00699 .54092 -.372770 -.054 .618 -50.6 -4.7 MAY 25 52784 -.00398 .54132 -.373412 -.253 .657 -50.9 -4.3 MAY 26 52785 -.00074 .54154 -.374066 -.495 .631 -51.4 -3.9 MAY 27 52786 .00261 .54198 -.374655 -.724 .554 -51.9 -3.8 MAY 28 52787 .00598 .54278 -.375165 -.883 .457 -52.3 -3.8 MAY 29 52788 .00951 .54372 -.375559 -.928 .350 -52.6 -4.0 IERS, B 184 (3) 3 - NORMAL VALUES OF THE EARTH ORIENTATION PARAMETERS AT FIVE-DAY INTERVALS (IERS evaluation). Raw normal values Uncertainties 2003 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 5 52734 -.12458 .44755 -.346613 -50.63 -3.63 .02 .02 .02 .08 .04 APR 10 52739 -.11468 .46235 -.349026 -50.70 -4.43 .01 .01 .01 .04 .02 APR 15 52744 -.10525 .47528 -.353227 -49.88 -4.84 .02 .02 .02 .04 .02 APR 20 52749 -.09548 .48565 -.358691 -50.92 -4.40 .02 .02 .03 .09 .04 APR 25 52754 -.08277 .49578 -.359298 -50.52 -4.93 .02 .02 .02 .06 .03 APR 30 52759 -.07027 .50618 -.362409 -50.78 -3.90 .01 .01 .01 .04 .02 MAY 5 52764 -.05314 .51542 -.364090 -50.71 -5.07 .02 .02 .02 .06 .03 MAY 10 52769 -.03968 .52506 -.364200 -50.14 -5.25 .02 .01 .02 .07 .03 MAY 15 52774 -.03042 .53188 -.368908 -51.22 -5.09 .02 .02 .02 .06 .03 MAY 20 52779 -.01847 .53751 -.371186 - - .03 .02 .04 - - MAY 25 52784 -.00400 .54131 -.373413 - - .03 .02 .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 2003 MJD s (microrad/s) APR 5 52734 .00089 72.921 15072 APR 10 52739 .00081 15079 APR 15 52744 .00074 15084 APR 20 52749 .00053 15102 APR 25 52754 .00043 15111 APR 30 52759 .00057 15099 MAY 5 52764 .00043 15111 5 - INFORMATION ON TIME SCALES No leap second was introduced in UTC on 31 December 2002. No leap second will be introduced in UTC on 30 June 2003. 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 184 (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 01 .22 .27 .13 - .06 .02 11 52737.20 to 52772.21 .18 .36 .06 - .13 .07 EOP(BKG) 3 R 01 .10 .10 .04 - .14 .06 11 52737.00 to 52772.00 .22 .13 .08 - .13 .08 EOP(BKG) 1 R 02 - - .08 - - - 24 52736.79 to 52779.79 - - .15 - - - EOP(GSFC) 3 R 04 .05 .05 .02 - .11 .05 11 52737.20 to 52772.20 .11 .10 .03 - .13 .05 EOP(GSFC) 3 R 03 - - .12 - - - 27 52736.79 to 52786.79 - - .22 - - - EOP(IAA) 3 R 02 .05 .05 .02 - .09 .04 11 52737.20 to 52772.20 .18 .15 .06 - .11 .04 EOP(IAA) 3 R 01 - - .10 - - - 32 52736.79 to 52786.79 - - .12 - - - EOP(SPBU) 2 R 01 - - .12 - - - 22 52736.79 to 52775.81 - - .17 - - - EOP(IVS) 2 R 01 .05 .05 .02 - .06 .03 10 52737.00 to 52772.00 .11 .12 .03 - .12 .05 GPS EOP(CODE) 98 P 01 .01 .01 - .25 - - 54 52734.50 to 52787.50 .06 .04 - .17 - - EOP(EMR) 96 P 03 .03 .03 - .04 - - 54 52734.50 to 52787.50 .08 .08 - .35 - - EOP(ESOC) 96 P 01 .21 .21 - .31 - - 54 52734.50 to 52787.50 .14 .13 - .25 - - EOP(GFZ) 96 P 02 .01 .01 - .01 - - 54 52734.50 to 52787.50 .08 .09 - .21 - - EOP(IAA) 1 P 01 .03 .03 - .06 - - 53 52734.50 to 52787.50 .14 .17 - .38 - - EOP(JPL) 96 P 03 .03 .03 - .12 - - 49 52734.50 to 52782.50 .13 .08 - .51 - - EOP(NOAA) 96 P 01 .02 .02 - .07 - - 37 52734.50 to 52770.50 .23 .15 - .46 - - EOP(SIO) 96 P 01 .06 .06 - .12 - - 54 52734.50 to 52787.50 .32 .12 - .32 - - EOP(IGS F)95 P 02 .02 .03 .08 .06 - - 43 52734.50 to 52776.50 .07 .04 .26 .23 - - EOP(IGS R)96 P 02 .04 .04 .18 .07 - - 54 52734.50 to 52787.50 .10 .06 .60 .30 - - EOP(IERS) 97 P 01 .05 .04 .22 .15 - - 54 52734.50 to 52787.50 .03 .02 .33 .21 - - SLR EOP(CGS) 97 L 02 .31 .33 .27 - - - 20 52734.00 to 52753.00 1.37 1.40 .87 - - - EOP(CSR) 95 L 01 .30 .36 .24 - - - 14 52734.20 to 52772.21 .29 .56 1.14 - - - EOP(DUT) 98 L 01 .06 .07 - - - - 9 52749.00 to 52773.00 .58 .54 - - - - EOP(IAA) 2 L 01 .04 .04 .02 .02 - - 55 52734.00 to 52788.00 .13 .25 .28 .14 - - EOP(MCC) 97 L 01 .06 .06 - .07 - - 21 52747.00 to 52767.00 .21 .16 - .35 - - Bulletin A EOP(NEOS) 97 C 01 .06 .06 .06 - - - 55 52734.00 to 52788.00 .15 .10 .12 - - -