BULLETIN B 164 01 October 2001 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 2001 " " s s 0.001" 0.001" (0h UTC) Final Bulletin B values. AUG 3 52124 .23097 .21138 -.021908 -32.021908 -59.9 -6.0 AUG 8 52129 .21963 .19863 -.021516 -32.021516 -60.3 -5.6 AUG 13 52134 .20601 .18615 -.022449 -32.022449 -61.9 -5.8 AUG 18 52139 .19341 .17457 -.023792 -32.023792 -61.7 -5.7 AUG 23 52144 .18109 .16391 -.025402 -32.025402 -62.8 -5.5 AUG 28 52149 .17052 .15408 -.027002 -32.027002 -63.3 -5.9 SEP 2 52154 .15703 .14779 -.028211 -32.028211 -61.3 -5.5 Preliminary extension, to be updated weekly in Bulletin A and monthly in Bulletin B. SEP 7 52159 .14183 .13910 -.029980 -32.029980 -62.4 -5.2 SEP 12 52164 .12887 .13324 -.031222 -32.031222 -61.9 -5.0 SEP 17 52169 .11167 .12815 -.032331 -32.032331 -60.9 -4.0 SEP 22 52174 .09453 .12488 -.034075 -32.034075 -62.9 -4.2 SEP 27 52179 .07892 .11979 -.036646 -32.036646 -60.4 -5.0 OCT 2 52184 .06261 .11715 -.039524 -32.039524 -57.9 -3.8 OCT 7 52189 .04693 .11662 -.043125 -32.043125 -58.9 -4.0 OCT 12 52194 .03142 .11770 -.047337 -32.047337 -56.6 -4.1 OCT 17 52199 .01600 .12013 -.051983 -32.051983 -57.4 -3.1 OCT 22 52204 .00071 .12378 -.056904 -32.056904 -57.5 -3.7 OCT 27 52209 -.01441 .12860 -.061993 -32.061993 -55.0 -3.4 NOV 1 52214 -.02926 .13458 -.067165 -32.067165 -56.0 -2.5 NOV 6 52219 -.04374 .14169 -.072346 -32.072346 -55.1 -3.2 NOV 11 52224 -.05777 .14988 -.077457 -32.077457 -53.2 -2.2 NOV 16 52229 -.07125 .15911 -.082493 -32.082493 -55.4 -2.1 NOV 21 52234 -.08410 .16933 -.087360 -32.087360 -52.9 -2.5 NOV 26 52239 -.09621 .18049 -.092060 -32.092060 -52.9 -1.6 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 164 (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 2000 IERS Annual Report. 2001 MJD x y UT1-UTC UT1-UT1R D dPsi dEpsilon (0 h UTC) " " s ms ms 0.001" 0.001" AUG 3 52124 .23097 .21138 -.021951 -.044 -.638 -59.9 -6.0 AUG 4 52125 .22819 .20860 -.021374 .354 -.505 -59.7 -5.9 AUG 5 52126 .22582 .20568 -.020961 .659 -.327 -59.7 -5.7 AUG 6 52127 .22384 .20313 -.020725 .846 -.167 -59.9 -5.7 AUG 7 52128 .22185 .20083 -.020626 .908 -.030 -60.0 -5.6 AUG 8 52129 .21963 .19863 -.020658 .859 .115 -60.3 -5.6 AUG 9 52130 .21711 .19629 -.020843 .729 .237 -60.6 -5.6 AUG 10 52131 .21430 .19401 -.021117 .559 .343 -60.9 -5.7 AUG 11 52132 .21126 .19153 -.021514 .394 .403 -61.3 -5.7 AUG 12 52133 .20840 .18878 -.021909 .275 .352 -61.6 -5.8 AUG 13 52134 .20601 .18615 -.022208 .241 .245 -61.9 -5.8 AUG 14 52135 .20377 .18364 -.022395 .317 .135 -62.0 -5.9 AUG 15 52136 .20105 .18117 -.022485 .499 .047 -62.0 -5.9 AUG 16 52137 .19840 .17894 -.022510 .743 .017 -62.0 -5.9 AUG 17 52138 .19601 .17681 -.022552 .964 .094 -61.8 -5.8 AUG 18 52139 .19341 .17457 -.022732 1.059 .286 -61.7 -5.7 AUG 19 52140 .19097 .17231 -.023144 .943 .542 -61.6 -5.7 AUG 20 52141 .18877 .17027 -.023814 .587 .785 -61.7 -5.6 AUG 21 52142 .18648 .16815 -.024687 .041 .940 -62.0 -5.5 AUG 22 52143 .18382 .16589 -.025651 -.589 .965 -62.3 -5.5 AUG 23 52144 .18109 .16391 -.026574 -1.172 .851 -62.8 -5.5 AUG 24 52145 .17869 .16209 -.027322 -1.597 .670 -63.2 -5.5 AUG 25 52146 .17648 .16018 -.027902 -1.801 .445 -63.6 -5.6 AUG 26 52147 .17436 .15812 -.028217 -1.774 .181 -63.7 -5.7 AUG 27 52148 .17238 .15601 -.028280 -1.549 -.027 -63.6 -5.8 AUG 28 52149 .17052 .15408 -.028184 -1.182 -.150 -63.3 -5.9 AUG 29 52150 .16831 .15245 -.028001 -.739 -.214 -62.8 -6.0 AUG 30 52151 .16594 .15101 -.027776 -.282 -.188 -62.3 -5.9 AUG 31 52152 .16332 .15002 -.027641 .132 -.133 -61.9 -5.8 SEP 1 52153 .16024 .14912 -.027522 .459 -.054 -61.5 -5.8 SEP 2 52154 .15703 .14779 -.027540 .671 .119 -61.3 -5.5 SEP 3 52155 .15391 .14624 -.027760 .758 .315 -61.3 -5.3 SEP 4 52156 .15079 .14474 -.028163 .729 .470 -61.5 -5.2 SEP 5 52157 .14742 .14278 -.028689 .612 .543 -61.7 -5.1 SEP 6 52158 .14437 .14071 -.029233 .450 .509 -62.1 -5.1 SEP 7 52159 .14183 .13910 -.029689 .291 .462 -62.4 -5.2 SEP 8 52160 .13946 .13777 -.030141 .183 .382 -62.6 -5.2 SEP 9 52161 .13718 .13672 -.030442 .163 .218 -62.7 -5.3 SEP 10 52162 .13477 .13561 -.030573 .253 .060 -62.5 -5.2 SEP 11 52163 .13201 .13443 -.030566 .453 -.049 -62.4 -5.0 SEP 12 52164 .12887 .13324 -.030492 .730 -.086 -61.9 -5.0 SEP 13 52165 .12570 .13209 -.030422 1.017 -.051 -61.5 -4.9 SEP 14 52166 .12243 .13096 -.030424 1.217 .065 -61.0 -4.7 SEP 15 52167 .11882 .12992 -.030581 1.234 .306 -60.7 -4.4 SEP 16 52168 .11514 .12903 -.031046 1.005 .615 -60.7 -4.2 SEP 17 52169 .11167 .12815 -.031797 .534 .853 -60.9 -4.0 SEP 18 52170 .10827 .12734 -.032715 -.100 .964 -61.3 -3.9 SEP 19 52171 .10467 .12653 -.033678 -.768 .955 -61.9 -3.8 SEP 20 52172 .10123 .12593 -.034583 -1.330 .842 -62.4 -3.9 SEP 21 52173 .09784 .12541 -.035336 -1.686 .644 -62.8 -3.9 SEP 22 52174 .09453 .12488 -.035867 -1.792 .439 -62.9 -4.2 SEP 23 52175 .09142 .12423 -.036228 -1.663 .277 -62.7 -4.5 SEP 24 52176 .08856 .12325 -.036443 -1.353 .149 -62.3 -4.8 SEP 25 52177 .08562 .12207 -.036541 -.935 .073 -61.6 -4.9 SEP 26 52178 .08230 .12077 -.036604 -.481 .071 -61.0 -5.1 SEP 27 52179 .07892 .11979 -.036701 -.055 .162 -60.4 -5.0 IERS, B 164 (3) 3 - NORMAL VALUES OF THE EARTH ORIENTATION PARAMETERS AT FIVE-DAY INTERVALS (IERS evaluation). Raw normal values Uncertainties 2001 MJD x y UT1-UTC dPsi dEps x y UT1 dPsi dEps (0 h UTC) " " s 0.001" 0.001" 0.0001s 0.001" AUG 3 52124 .23096 .21139 -.021960 -59.78 -5.93 .04 .04 .04 .10 .05 AUG 8 52129 .21962 .19863 -.020659 -60.37 -5.60 .04 .03 .03 .10 .05 AUG 13 52134 .20598 .18615 -.022208 -61.95 -5.76 .04 .03 .03 .09 .05 AUG 18 52139 .19342 .17458 -.022737 - - .05 .05 .04 - - AUG 23 52144 .18112 .16391 -.026580 -62.79 -5.54 .04 .04 .03 .10 .05 AUG 28 52149 .17050 .15407 -.028185 -63.31 -5.87 .04 .03 .04 .09 .05 SEP 2 52154 .15703 .14778 -.027548 - - .05 .05 .05 - - SEP 7 52159 .14188 .13913 -.029694 -62.37 -5.23 .05 .05 .03 .12 .06 SEP 12 52164 .12887 .13324 -.030496 - - .05 .05 .04 - - SEP 17 52169 .11167 .12815 -.031801 - - .05 .05 .05 - - SEP 22 52174 .09453 .12488 -.035877 - - .05 .05 .04 - - SEP 27 52179 .07892 .11977 .000000 - - .06 .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 2001 MJD s (microrad/s) AUG 3 52124 -.00021 72.921 15165 AUG 8 52129 .00002 15145 AUG 13 52134 .00027 15124 AUG 18 52139 .00029 15122 AUG 23 52144 .00034 15118 AUG 28 52149 .00027 15124 SEP 2 52154 .00027 15124 5 - INFORMATION ON TIME SCALES No leap second will be introduced in UTC on 31 December 2001. 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 164 (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 .12 .09 .04 - .17 .07 5 52129.25 to 52157.25 .15 .13 .05 - .15 .14 EOP(BKG) 0 R 02 .09 .07 .04 - .15 .06 6 52129.00 to 52157.00 .18 .11 .05 - .10 .08 EOP(BKG) 0 R 01 - - .10 - - - 27 52124.79 to 52172.79 - - .09 - - - EOP(GSFC) 1 R 04 .09 .07 .04 - .18 .06 6 52129.25 to 52157.25 .08 .05 .06 - .24 .03 EOP(GSFC) 1 R 03 - - .11 - - - 29 52124.79 to 52176.79 - - .08 - - - EOP(IAA) 1 R 03 - - .09 - - - 29 52124.79 to 52176.79 - - .16 - - - EOP(IAA) 1 R 04 .08 .06 .03 - .14 .06 4 52129.25 to 52150.25 .09 .07 .07 - .05 .05 EOP(SPBU) 0 R 03 .09 .07 .04 - .16 .06 5 52129.25 to 52157.25 .09 .03 .05 - .22 .08 EOP(IVS) 0 R 01 .07 .05 .03 - .08 .03 4 52129.00 to 52150.00 .06 .06 .02 - .11 .06 GPS EOP(CODE) 98 P 01 .01 .01 - .46 - - 55 52124.50 to 52178.50 .08 .09 - .25 - - EOP(EMR) 96 P 03 .05 .05 - .08 - - 44 52124.50 to 52167.50 .11 .09 - .41 - - EOP(ESOC) 96 P 01 .02 .02 - .03 - - 55 52124.50 to 52178.50 .33 .13 - .37 - - EOP(GFZ) 96 P 02 .02 .02 - .02 - - 55 52124.50 to 52178.50 .07 .07 - .36 - - EOP(JPL) 96 P 03 .03 .04 - .16 - - 55 52124.50 to 52178.50 .06 .08 - .35 - - EOP(NOAA) 96 P 01 .03 .03 - .20 - - 53 52124.50 to 52176.50 .17 .20 - 1.11 - - EOP(SIO) 96 P 01 .08 .08 - .21 - - 46 52124.50 to 52169.50 .06 .07 - .41 - - EOP(IGS) 95 P 02 .04 .05 .11 .07 - - 44 52124.50 to 52167.50 .05 .06 .32 .21 - - EOP(IGS) 96 P 02 .06 .06 .27 .08 - - 55 52124.50 to 52178.50 .12 .11 .91 .27 - - EOP(IERS) 97 P 01 .06 .05 .25 .17 - - 55 52124.50 to 52178.50 .05 .03 .29 .22 - - SLR EOP(CGS) 97 L 02 .16 .17 .16 - - - 51 52124.00 to 52174.00 .45 .60 2.05 - - - EOP(CSR) 95 L 01 .29 .31 .29 - - - 18 52124.90 to 52175.91 .33 .48 .77 - - - EOP(DUT) 98 L 01 .09 .09 - - - - 17 52125.00 to 52173.00 .48 .32 - - - - EOP(IAA) 98 L 02 .05 .05 .04 .04 - - 56 52124.00 to 52179.00 .17 .25 .50 .20 - - EOP(MCC) 97 L 01 .05 .05 - .08 - - 50 52124.00 to 52173.00 .21 .15 - .49 - - Bulletin A EOP(NEOS) 97 C 01 .04 .06 .10 - - - 56 52124.00 to 52179.00 .05 .10 .22 - - - 7 - INDIVIDUAL SERIES OF EARTH ORIENTATION PARAMETERS Operational series used for Bulletin B completion are now available on our web ftp site: http://hpiers.obspm.fr/eop-pc/products/operational.html For this reason, section 7 has been removed. We hope there is no inconvenience.