BULLETIN B 182 1 April 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. FEB 4 52674 -.14526 .27244 -.306449 -32.306449 -53.8 -1.2 FEB 9 52679 -.15127 .28592 -.309228 -32.309228 -53.9 -1.1 FEB 14 52684 -.15616 .29950 -.312382 -32.312382 -54.3 -2.1 FEB 19 52689 -.15489 .31355 -.315571 -32.315571 -52.9 -1.7 FEB 24 52694 -.15507 .33043 -.318547 -32.318547 -54.2 -2.0 MAR 1 52699 -.15380 .34463 -.321589 -32.321589 -52.5 -2.2 Preliminary extension, to be updated weekly in Bulletin A and monthly in Bulletin B. MAR 6 52704 -.15372 .35830 -.323975 -32.323975 -53.3 -2.2 MAR 11 52709 -.15551 .37238 -.327175 -32.327175 -52.7 -2.7 MAR 16 52714 -.15688 .38687 -.331134 -32.331134 -51.5 -3.4 MAR 21 52719 -.15307 .40339 -.335120 -32.335120 -52.5 -3.5 MAR 26 52724 -.14743 .41842 -.338642 -32.338642 -52.7 -3.8 MAR 31 52729 -.13522 .43283 -.342057 -32.342057 -50.9 -3.2 APR 5 52734 -.12460 .44550 -.345562 -32.345562 -49.4 -3.7 APR 10 52739 -.11328 .45707 -.349361 -32.349361 -49.2 -4.7 APR 15 52744 -.10128 .46769 -.353375 -32.353375 -48.1 -4.5 APR 20 52749 -.08861 .47737 -.357449 -32.357449 -50.2 -4.5 APR 25 52754 -.07531 .48611 -.361462 -32.361462 -48.7 -5.1 APR 30 52759 -.06148 .49387 -.365307 -32.365307 -48.6 -4.5 MAY 5 52764 -.04716 .50061 -.368938 -32.368938 -49.1 -4.9 MAY 10 52769 -.03249 .50631 -.372303 -32.372303 -48.1 -5.3 MAY 15 52774 -.01754 .51093 -.375362 -32.375362 -49.4 -4.7 MAY 20 52779 -.00241 .51448 -.378094 -32.378094 -50.3 -5.2 MAY 25 52784 .01279 .51692 -.380489 -32.380489 -49.4 -5.1 MAY 30 52789 .02799 .51826 -.382519 -32.382519 -50.6 -4.6 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 182 (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" FEB 4 52674 -.14526 .27244 -.306176 .273 .625 -53.8 -1.2 FEB 5 52675 -.14616 .27528 -.306896 .078 .759 -53.9 -1.2 FEB 6 52676 -.14727 .27800 -.307681 -.157 .779 -54.0 -1.2 FEB 7 52677 -.14839 .28043 -.308435 -.375 .743 -54.0 -1.2 FEB 8 52678 -.14961 .28316 -.309151 -.523 .682 -53.9 -1.2 FEB 9 52679 -.15127 .28592 -.309788 -.560 .568 -53.9 -1.1 FEB 10 52680 -.15291 .28857 -.310281 -.462 .406 -53.9 -1.1 FEB 11 52681 -.15428 .29137 -.310603 -.227 .259 -54.0 -1.3 FEB 12 52682 -.15530 .29410 -.310809 .129 .206 -54.2 -1.5 FEB 13 52683 -.15591 .29678 -.311034 .563 .268 -54.3 -1.9 FEB 14 52684 -.15616 .29950 -.311373 1.008 .356 -54.3 -2.1 FEB 15 52685 -.15632 .30211 -.311778 1.376 .421 -54.1 -2.2 FEB 16 52686 -.15629 .30455 -.312245 1.570 .542 -53.7 -2.1 FEB 17 52687 -.15578 .30706 -.312880 1.514 .774 -53.3 -1.9 FEB 18 52688 -.15528 .31003 -.313790 1.184 1.046 -53.0 -1.8 FEB 19 52689 -.15489 .31355 -.314944 .627 1.219 -52.9 -1.7 FEB 20 52690 -.15470 .31755 -.316184 -.047 1.268 -53.1 -1.9 FEB 21 52691 -.15509 .32138 -.317431 -.697 1.195 -53.4 -2.0 FEB 22 52692 -.15549 .32447 -.318536 -1.191 .988 -53.8 -2.1 FEB 23 52693 -.15540 .32739 -.319389 -1.441 .718 -54.1 -2.0 FEB 24 52694 -.15507 .33043 -.319975 -1.428 .471 -54.2 -2.0 FEB 25 52695 -.15465 .33343 -.320354 -1.188 .304 -54.0 -1.9 FEB 26 52696 -.15453 .33637 -.320616 -.805 .222 -53.7 -1.9 FEB 27 52697 -.15461 .33928 -.320833 -.380 .212 -53.2 -2.0 FEB 28 52698 -.15436 .34211 -.321069 -.005 .246 -52.8 -2.2 MAR 1 52699 -.15380 .34463 -.321341 .248 .334 -52.5 -2.2 MAR 2 52700 -.15314 .34719 -.321740 .348 .478 -52.5 -2.3 MAR 3 52701 -.15283 .35018 -.322291 .299 .607 -52.8 -2.2 MAR 4 52702 -.15303 .35313 -.322940 .133 .670 -53.1 -2.2 MAR 5 52703 -.15337 .35582 -.323612 -.096 .692 -53.2 -2.2 MAR 6 52704 -.15372 .35830 -.324302 -.327 .701 -53.3 -2.2 MAR 7 52705 -.15409 .36076 -.324996 -.501 .679 -53.2 -2.2 MAR 8 52706 -.15449 .36346 -.325646 -.570 .616 -53.1 -2.4 MAR 9 52707 -.15470 .36629 -.326221 -.502 .530 -53.0 -2.5 MAR 10 52708 -.15486 .36930 -.326708 -.290 .446 -52.9 -2.6 MAR 11 52709 -.15551 .37238 -.327121 .054 .372 -52.7 -2.7 MAR 12 52710 -.15640 .37554 -.327468 .492 .305 -52.7 -2.9 MAR 13 52711 -.15703 .37863 -.327753 .970 .315 -52.6 -3.1 MAR 14 52712 -.15729 .38137 -.328128 1.406 .429 -52.5 -3.3 MAR 15 52713 -.15715 .38399 -.328645 1.704 .603 -52.0 -3.4 MAR 16 52714 -.15688 .38687 -.329362 1.772 .863 -51.5 -3.4 MAR 17 52715 -.15662 .38975 -.330381 1.550 1.181 -51.2 -3.5 MAR 18 52716 -.15597 .39259 -.331708 1.044 1.439 -51.1 -3.5 MAR 19 52717 -.15488 .39583 -.333217 .341 1.553 -51.4 -3.5 MAR 20 52718 -.15382 .39955 -.334759 -.413 1.504 -52.0 -3.5 MAR 21 52719 -.15307 .40339 -.336175 -1.055 1.298 -52.5 -3.5 MAR 22 52720 -.15228 .40659 -.337323 -1.457 .986 -53.0 -3.5 MAR 23 52721 -.15147 .40967 -.338142 -1.566 .671 -53.3 -3.7 MAR 24 52722 -.15051 .41248 -.338685 -1.406 .424 -53.7 -3.0 MAR 25 52723 -.14906 .41540 -.339025 -1.060 .278 -53.3 -3.4 MAR 26 52724 -.14743 .41842 -.339278 -.635 .228 -52.7 -3.8 MAR 27 52725 -.14556 .42128 -.339546 -.237 .323 -52.0 -4.0 IERS, B 182 (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" FEB 4 52674 -.14529 .27245 -.306182 -53.82 -1.21 .01 .02 .02 .06 .03 FEB 9 52679 -.15126 .28593 -.309788 -54.02 -1.12 .01 .02 .02 .05 .02 FEB 14 52684 -.15616 .29950 -.311374 -54.27 -2.12 .01 .02 .03 .07 .03 FEB 19 52689 -.15489 .31355 -.314945 -52.97 -1.74 .01 .01 .02 .04 .02 FEB 24 52694 -.15506 .33044 -.319976 -54.18 -1.89 .01 .02 .02 .06 .02 MAR 1 52699 -.15380 .34463 -.321340 -52.58 -2.25 .01 .02 .03 .08 .04 MAR 6 52704 -.15371 .35830 -.324303 -53.27 -2.17 .01 .01 .01 .04 .02 MAR 11 52709 -.15551 .37238 -.327121 -52.73 -2.73 .02 .02 .02 .07 .03 MAR 16 52714 -.15688 .38688 -.329362 -51.51 -3.43 .02 .02 .02 .08 .03 MAR 21 52719 -.15308 .40339 -.336174 - - .02 .02 .02 - - MAR 26 52724 -.14744 .41842 -.339279 - - .06 .07 .06 - - 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) FEB 4 52674 .00047 72.921 15107 FEB 9 52679 .00060 15096 FEB 14 52684 .00078 15081 FEB 19 52689 .00059 15097 FEB 24 52694 .00061 15095 MAR 1 52699 .00052 15103 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 182 (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 .17 .21 .12 - .07 .03 13 52674.21 to 52716.21 .11 .23 .07 - .17 .06 EOP(BKG) 3 R 01 .12 .11 .04 - .18 .07 10 52674.00 to 52709.00 .20 .17 .07 - .25 .07 EOP(BKG) 1 R 02 - - .19 - - - 25 52674.79 to 52723.79 - - .17 - - - EOP(GSFC) 3 R 02 .06 .05 .02 - .21 .08 14 52674.21 to 52716.20 .09 .14 .02 - .20 .04 EOP(GSFC) 3 R 01 - - .24 - - - 21 52674.79 to 52716.79 - - .18 - - - EOP(IAA) 2 R 01 .06 .06 .02 - .11 .04 4 52674.21 to 52684.27 .12 .17 .08 - .07 .05 EOP(IAA) 2 R 02 - - .33 - - - 4 52674.79 to 52680.80 - - .11 - - - EOP(SPBU) 1 R 02 .10 .09 .03 - .45 .07 6 52674.21 to 52691.27 1.51 .80 .44 - .81 .17 EOP(SPBU) 2 R 01 - - .20 - - - 25 52674.79 to 52723.79 - - .16 - - - EOP(IVS) 0 R 01 .07 .06 .02 - .09 .04 4 52674.00 to 52684.00 .16 .06 .03 - .14 .05 GPS EOP(CODE) 98 P 01 .01 .01 - .35 - - 51 52674.50 to 52724.50 .04 .06 - .24 - - EOP(EMR) 96 P 03 .03 .03 - .04 - - 51 52674.50 to 52724.50 .09 .11 - .22 - - EOP(ESOC) 96 P 01 .02 .02 - .03 - - 51 52674.50 to 52724.50 .10 .15 - .19 - - EOP(GFZ) 96 P 02 .01 .01 - .01 - - 51 52674.50 to 52724.50 .07 .10 - .34 - - EOP(IAA) 1 P 01 .03 .03 - .06 - - 51 52674.50 to 52724.50 .26 .15 - .33 - - EOP(JPL) 96 P 03 .03 .04 - .14 - - 51 52674.50 to 52724.50 .10 .15 - .76 - - EOP(NOAA) 96 P 01 .02 .02 - .10 - - 50 52674.50 to 52723.50 .14 .19 - .55 - - EOP(SIO) 96 P 01 .06 .06 - .14 - - 51 52674.50 to 52724.50 .20 .15 - .55 - - EOP(IGS F)95 P 02 .03 .03 .10 .06 - - 40 52674.50 to 52713.50 .04 .05 .29 .20 - - EOP(IGS R)96 P 02 .05 .05 .20 .08 - - 51 52674.50 to 52724.50 .08 .10 .62 .20 - - EOP(IERS) 97 P 01 .04 .06 .26 .18 - - 51 52674.50 to 52724.50 .03 .03 .33 .14 - - SLR EOP(CGS) 97 L 02 .23 .27 .25 - - - 46 52674.00 to 52719.00 .88 .70 2.30 - - - EOP(CSR) 95 L 01 .25 .27 .27 - - - 16 52676.72 to 52721.68 .29 .30 .79 - - - EOP(DUT) 98 L 01 .06 .06 - - - - 15 52674.00 to 52725.00 .66 .51 - - - - EOP(IAA) 2 L 01 .03 .03 .02 .02 - - 52 52674.00 to 52725.00 .16 .15 .29 .14 - - EOP(MCC) 97 L 01 .05 .05 - .04 - - 52 52674.00 to 52725.00 .13 .15 - .49 - - Bulletin A EOP(NEOS) 97 C 01 .05 .06 .07 - - - 52 52674.00 to 52725.00 .07 .09 .23 - - -