BULLETIN B 181 (IAU 2000) 4 March 2003 ============================================================================== 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 until December 2004. For more details refer to IERS Messages 38, on IAU 2000 Resolution Compliancy Information. ============================================================================== Contents are described in the Explanatory Supplement which will be available in the course of March 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 2003 " " s s 0.001" 0.001" (0h UTC) Final Bulletin B values. JAN 5 52644 -.10068 .19741 -.290995 -32.290995 .08 .13 JAN 10 52649 -.11317 .20788 -.294347 -32.294347 .01 -.05 JAN 15 52654 -.12157 .21912 -.298193 -32.298193 -.08 -.13 JAN 20 52659 -.12884 .23101 -.301309 -32.301309 -.10 -.01 JAN 25 52664 -.13512 .24481 -.303049 -32.303049 .06 .05 JAN 30 52669 -.13938 .25824 -.304821 -32.304821 -.07 -.08 FEB 4 52674 -.14526 .27244 -.306449 -32.306449 -.01 .14 Preliminary extension, to be updated weekly in Bulletin A and monthly in Bulletin B. FEB 9 52679 -.15126 .28592 -.309222 -32.309222 -.04 .06 FEB 14 52684 -.15617 .29950 -.312377 -32.312377 .02 -.13 FEB 19 52689 -.15489 .31360 -.315526 -32.315526 -.09 -.47 FEB 24 52694 -.15498 .33023 -.318572 -32.318572 -.44 .57 MAR 1 52699 -.15372 .34472 -.321517 -32.321517 .00 .00 MAR 6 52704 -.15040 .35896 -.324654 -32.324654 .00 .00 MAR 11 52709 -.14621 .37365 -.328690 -32.328690 .00 .00 MAR 16 52714 -.14069 .38804 -.333038 -32.333038 .00 .00 MAR 21 52719 -.13397 .40199 -.337532 -32.337532 .00 .00 MAR 26 52724 -.12608 .41542 -.342102 -32.342102 .00 .00 MAR 31 52729 -.11709 .42823 -.346657 -32.346657 .00 .00 APR 5 52734 -.10708 .44036 -.351196 -32.351196 .00 .00 APR 10 52739 -.09610 .45173 -.355637 -32.355637 .00 .00 APR 15 52744 -.08424 .46228 -.359947 -32.359947 .00 .00 APR 20 52749 -.07158 .47194 -.364098 -32.364098 .00 .00 APR 25 52754 -.05820 .48067 -.368034 -32.368034 .00 .00 APR 30 52759 -.04418 .48841 -.371750 -32.371750 .00 .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 181 (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 2001 IERS Annual Report. 2003 MJD x y UT1-UTC UT1-UT1R D dX dY (0 h UTC) " " s ms ms 0.001" 0.001" JAN 5 52644 -.10068 .19741 -.290846 .149 .435 .08 .13 JAN 6 52645 -.10354 .19931 -.291349 .282 .579 .06 .11 JAN 7 52646 -.10596 .20129 -.292018 .273 .762 .03 .02 JAN 8 52647 -.10852 .20338 -.292861 .146 .868 .01 -.10 JAN 9 52648 -.11106 .20547 -.293738 -.056 .893 .01 -.13 JAN 10 52649 -.11317 .20788 -.294629 -.282 .916 .01 -.05 JAN 11 52650 -.11524 .21036 -.295552 -.478 .917 .00 .10 JAN 12 52651 -.11726 .21261 -.296448 -.597 .852 -.02 .13 JAN 13 52652 -.11900 .21473 -.297247 -.601 .729 -.05 .05 JAN 14 52653 -.12031 .21689 -.297903 -.473 .576 -.07 -.05 JAN 15 52654 -.12157 .21912 -.298402 -.209 .417 -.08 -.13 JAN 16 52655 -.12287 .22153 -.298750 .166 .285 -.06 -.11 JAN 17 52656 -.12428 .22406 -.298993 .602 .215 -.05 -.05 JAN 18 52657 -.12598 .22653 -.299210 1.024 .222 -.05 .01 JAN 19 52658 -.12758 .22879 -.299469 1.340 .305 -.08 .02 JAN 20 52659 -.12884 .23101 -.299844 1.465 .462 -.10 -.01 JAN 21 52660 -.12991 .23342 -.300401 1.350 .661 -.08 -.02 JAN 22 52661 -.13097 .23635 -.301154 .996 .820 -.03 .03 JAN 23 52662 -.13214 .23961 -.302013 .464 .876 .03 .07 JAN 24 52663 -.13354 .24244 -.302867 -.142 .889 .07 .08 JAN 25 52664 -.13512 .24481 -.303750 -.701 .845 .06 .05 JAN 26 52665 -.13678 .24702 -.304526 -1.104 .661 .02 .02 JAN 27 52666 -.13809 .24945 -.305056 -1.282 .397 -.02 -.01 JAN 28 52667 -.13888 .25221 -.305325 -1.219 .168 -.06 -.01 JAN 29 52668 -.13928 .25517 -.305414 -.956 .020 -.08 -.05 JAN 30 52669 -.13938 .25824 -.305397 -.576 -.043 -.07 -.08 JAN 31 52670 -.13987 .26129 -.305362 -.179 -.025 -.04 -.06 FEB 1 52671 -.14113 .26405 -.305373 .144 .037 -.01 .02 FEB 2 52672 -.14257 .26675 -.305449 .335 .154 .02 .12 FEB 3 52673 -.14409 .26967 -.305680 .372 .369 .02 .16 FEB 4 52674 -.14526 .27244 -.306176 .273 .625 -.01 .14 FEB 5 52675 -.14615 .27529 -.306914 .078 .760 .00 .09 FEB 6 52676 -.14728 .27799 -.307676 -.157 .766 .04 .08 FEB 7 52677 -.14837 .28045 -.308427 -.375 .747 .07 .08 FEB 8 52678 -.14961 .28318 -.309153 -.523 .683 .03 .09 FEB 9 52679 -.15126 .28592 -.309782 -.560 .561 -.04 .06 FEB 10 52680 -.15291 .28858 -.310270 -.462 .407 -.08 .00 FEB 11 52681 -.15427 .29138 -.310599 -.227 .265 -.08 -.01 FEB 12 52682 -.15530 .29412 -.310809 .129 .205 -.05 -.16 FEB 13 52683 -.15590 .29679 -.311027 .563 .266 -.02 -.23 FEB 14 52684 -.15617 .29950 -.311369 1.008 .358 .02 -.13 FEB 15 52685 -.15633 .30211 -.311776 1.376 .417 .00 .00 FEB 16 52686 -.15628 .30455 -.312234 1.570 .541 .00 .00 FEB 17 52687 -.15578 .30707 -.312877 1.514 .768 .00 .00 FEB 18 52688 -.15527 .31005 -.313768 1.184 1.025 .00 .00 FEB 19 52689 -.15489 .31360 -.314899 .627 1.229 .00 .00 FEB 20 52690 -.15471 .31755 -.316182 -.047 1.296 .00 .00 FEB 21 52691 -.15507 .32137 -.317442 -.697 1.202 .00 .00 FEB 22 52692 -.15550 .32453 -.318548 -1.191 .992 .00 .00 FEB 23 52693 -.15541 .32736 -.319406 -1.441 .724 .00 .00 FEB 24 52694 -.15498 .33023 -.320000 -1.428 .475 .00 .00 FEB 25 52695 -.15461 .33315 -.320390 -1.188 .291 .00 .00 FEB 26 52696 -.15455 .33619 -.320642 -.805 .201 .00 .00 FEB 27 52697 -.15446 .33914 -.320825 -.380 .228 .00 .00 IERS, B 181 (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 dX dY x y UT1 dX dY (0 h UTC) " " s 0.001" 0.001" 0.0001s 0.001" JAN 5 52644 -.10067 .19742 -.290864 .073 .113 .01 .02 .02 .02 .02 JAN 10 52649 -.11319 .20786 -.294630 .053 -.136 .01 .02 .02 .03 .03 JAN 15 52654 -.12158 .21912 -.298401 -.090 -.082 .02 .02 .02 .02 .02 JAN 20 52659 -.12883 .23100 -.299841 -.125 .077 .02 .02 .03 .04 .04 JAN 25 52664 -.13513 .24481 -.303751 .116 .105 .02 .02 .03 .05 .05 JAN 30 52669 -.13937 .25824 -.305398 -.070 -.095 .02 .02 .02 .02 .02 FEB 4 52674 -.14526 .27244 -.306179 -.019 .088 .02 .03 .03 .04 .03 FEB 9 52679 -.15126 .28592 -.309782 -.030 .071 .01 .02 .02 .02 .02 FEB 14 52684 -.15617 .29950 -.311368 .020 -.145 .01 .02 .04 .03 .03 FEB 19 52689 -.15489 .31360 -.314899 - - .02 .02 .13 - - FEB 24 52694 -.15497 .33024 -.319977 - - .02 .03 .08 - - 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) JAN 5 52644 .00065 72.921 15092 JAN 10 52649 .00070 15088 JAN 15 52654 .00075 15084 JAN 20 52659 .00048 15107 JAN 25 52664 .00035 15117 JAN 30 52669 .00037 15116 FEB 4 52674 .00047 15107 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 181 (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. Units : 0.001" for x,y , 0.0001s for UT1, 0.001" for dX, dY. -------------------------------------------------------------------------------- EOP series Mean formal uncertainty Periods covered Weighted RMS agreement with Bulletin B -------------------------------------------------------------------------------- x y UT D dX dY Data Number VLBI EOP(AUS) 1 R 01 .19 .23 .13 - - - 11 52646.21 to 52684.27 .23 .55 .10 - - - EOP(BKG) 3 R 01 .12 .11 .04 - - - 12 52646.00 to 52684.00 .17 .11 .06 - - - EOP(BKG) 1 R 02 - - .22 - - - 28 52645.79 to 52695.79 - - .18 - - - EOP(GSFC) 3 R 02 .07 .06 .02 - - - 12 52646.20 to 52684.27 .11 .07 .02 - - - EOP(GSFC) 3 R 01 - - .24 - - - 29 52645.79 to 52696.79 - - .15 - - - EOP(IAA) 2 R 01 .07 .07 .03 - - - 12 52646.21 to 52684.27 .23 .12 .06 - - - EOP(IAA) 2 R 02 - - .19 - - - 20 52645.79 to 52680.80 - - .08 - - - EOP(SPBU) 1 R 02 .11 .09 .04 - - - 8 52646.21 to 52674.21 1.31 .76 .35 - - - EOP(SPBU) 2 R 01 - - .24 - - - 26 52645.79 to 52689.79 - - .09 - - - EOP(IVS) 0 R 01 .12 .11 .04 - - - 6 52646.00 to 52663.00 .10 .05 .04 - - - GPS EOP(CODE) 98 P 01 .01 .01 - .28 - - 49 52644.50 to 52692.50 .04 .05 - .31 - - EOP(EMR) 96 P 03 .03 .04 - .05 - - 42 52644.50 to 52685.50 .12 .07 - .30 - - EOP(ESOC) 96 P 01 .02 .02 - .03 - - 45 52644.50 to 52688.50 .18 .15 - .28 - - EOP(GFZ) 96 P 02 .01 .01 - .01 - - 53 52644.50 to 52696.50 .07 .09 - .32 - - EOP(IAA) 1 P 01 .03 .03 - .06 - - 53 52644.50 to 52696.50 .23 .17 - .49 - - EOP(JPL) 96 P 03 .03 .03 - .15 - - 42 52644.50 to 52685.50 .07 .07 - .34 - - EOP(NOAA) 96 P 01 .02 .02 - .10 - - 47 52644.50 to 52690.50 .18 .24 - .66 - - EOP(SIO) 96 P 01 .06 .06 - .13 - - 49 52644.50 to 52692.50 .19 .07 - .45 - - EOP(IGS F)95 P 02 .03 .03 .10 .07 - - 42 52644.50 to 52685.50 .04 .05 .34 .22 - - EOP(IGS R)96 P 02 .05 .05 .23 .08 - - 53 52644.50 to 52696.50 .08 .11 .57 .27 - - EOP(IERS) 97 P 01 .04 .06 .21 .14 - - 53 52644.50 to 52696.50 .03 .03 .55 .13 - - SLR EOP(CGS) 97 L 02 .20 .23 .23 - - - 52 52644.00 to 52695.00 .60 .51 1.22 - - - EOP(CSR) 95 L 01 .28 .28 .23 - - - 17 52647.20 to 52694.89 .47 .41 1.45 - - - EOP(DUT) 98 L 01 .06 .06 - - - - 16 52644.00 to 52689.00 .70 .61 - - - - EOP(IAA) 2 L 01 .03 .03 .02 .02 - - 54 52644.00 to 52697.00 .18 .18 .25 .14 - - EOP(MCC) 97 L 01 .05 .05 - .06 - - 47 52644.00 to 52690.00 .15 .13 - .56 - - Bulletin A EOP(NEOS) 97 C 01 .05 .06 .09 - - - 54 52644.00 to 52697.00 .10 .07 .25 - - -