BULLETIN B 168 2 February 2002 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/ 2 " " s s 0.001" 0.001" (0h UTC) Final Bulletin B values. DEC 1 52244 -.11848 .19551 -.092009 -32.092009 -55.4 -1.8 DEC 6 52249 -.13182 .20853 -.094869 -32.094869 -53.6 -1.3 DEC 11 52254 -.14672 .22255 -.097724 -32.097724 -55.5 -.5 DEC 16 52259 -.15998 .23578 -.101501 -32.101501 -54.8 -1.4 DEC 21 52264 -.16931 .25177 -.105465 -32.105465 -53.5 -.9 DEC 26 52269 -.17298 .27052 -.110373 -32.110373 -55.4 -.7 DEC 31 52274 -.17695 .29025 -.115642 -32.115642 -54.3 -.9 JAN 5 52279 -.17955 .30644 -.120280 -32.120280 -53.1 -1.0 Preliminary extension, to be updated weekly in Bulletin A and monthly in Bulletin B. JAN 10 52284 -.18308 .32117 -.123927 -32.123927 -53.9 -.8 JAN 15 52289 -.18125 .33676 -.126388 -32.126388 -52.0 -1.6 JAN 20 52294 -.17839 .35217 -.128039 -32.128039 -54.3 -1.4 JAN 25 52299 -.17579 .36864 -.130522 -32.130522 -55.1 -1.4 JAN 30 52304 -.17209 .38494 -.133926 -32.133926 -53.1 -1.0 FEB 4 52309 -.16642 .40185 -.137119 -32.137119 -52.4 -1.5 FEB 9 52314 -.15945 .41881 -.140186 -32.140186 -52.2 -2.4 FEB 14 52319 -.15113 .43532 -.143467 -32.143467 -50.4 -2.1 FEB 19 52324 -.14145 .45124 -.146992 -32.146992 -52.0 -2.3 FEB 24 52329 -.13042 .46645 -.150745 -32.150745 -51.3 -3.2 MAR 1 52334 -.11810 .48086 -.154728 -32.154728 -50.4 -2.6 MAR 6 52339 -.10455 .49436 -.158924 -32.158924 -52.7 -3.4 MAR 11 52344 -.08986 .50686 -.163334 -32.163334 -49.9 -3.9 MAR 16 52349 -.07409 .51826 -.167934 -32.167934 -50.4 -3.2 MAR 21 52354 -.05735 .52848 -.172703 -32.172703 -51.1 -4.3 MAR 26 52359 -.03973 .53745 -.177593 -32.177593 -48.9 -4.3 MAR 31 52364 -.02134 .54510 -.182591 -32.182591 -51.0 -4.1 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 168 (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/ 2 MJD x y UT1-UTC UT1-UT1R D dPsi dEpsilon (0 h UTC) " " s ms ms 0.001" 0.001" DEC 1 52244 -.11848 .19551 -.092121 -.112 .554 -55.4 -1.8 DEC 2 52245 -.12168 .19801 -.092574 .104 .359 -55.0 -1.8 DEC 3 52246 -.12461 .20023 -.092861 .407 .250 -54.6 -1.9 DEC 4 52247 -.12715 .20247 -.093105 .719 .262 -54.2 -1.8 DEC 5 52248 -.12947 .20523 -.093414 .949 .363 -53.8 -1.6 DEC 6 52249 -.13182 .20853 -.093852 1.017 .538 -53.6 -1.3 DEC 7 52250 -.13456 .21171 -.094496 .881 .748 -53.7 -1.1 DEC 8 52251 -.13779 .21440 -.095338 .546 .951 -54.0 -.9 DEC 9 52252 -.14097 .21684 -.096373 .067 1.111 -54.4 -.7 DEC 10 52253 -.14384 .21961 -.097525 -.469 1.171 -55.0 -.5 DEC 11 52254 -.14672 .22255 -.098680 -.956 1.127 -55.5 -.5 DEC 12 52255 -.14981 .22527 -.099752 -1.300 1.006 -55.9 -.6 DEC 13 52256 -.15269 .22781 -.100679 -1.442 .823 -56.1 -.8 DEC 14 52257 -.15527 .23044 -.101400 -1.369 .602 -55.9 -1.0 DEC 15 52258 -.15771 .23315 -.101899 -1.113 .406 -55.5 -1.2 DEC 16 52259 -.15998 .23578 -.102237 -.736 .308 -54.8 -1.4 DEC 17 52260 -.16199 .23856 -.102539 -.311 .327 -54.2 -1.6 DEC 18 52261 -.16391 .24157 -.102911 .092 .412 -53.7 -1.6 DEC 19 52262 -.16591 .24480 -.103378 .420 .515 -53.4 -1.4 DEC 20 52263 -.16781 .24829 -.103950 .636 .680 -53.2 -1.2 DEC 21 52264 -.16931 .25177 -.104738 .727 .911 -53.5 -.9 DEC 22 52265 -.17042 .25533 -.105766 .697 1.072 -53.9 -.6 DEC 23 52266 -.17134 .25895 -.106872 .572 1.127 -54.2 -.5 DEC 24 52267 -.17213 .26250 -.108006 .388 1.155 -54.8 -.4 DEC 25 52268 -.17263 .26638 -.109166 .188 1.182 -55.1 -.6 DEC 26 52269 -.17298 .27052 -.110354 .020 1.165 -55.4 -.7 DEC 27 52270 -.17360 .27489 -.111493 -.070 1.089 -55.5 -.8 DEC 28 52271 -.17454 .27847 -.112538 -.043 .979 -55.5 -1.0 DEC 29 52272 -.17519 .28235 -.113456 .112 .850 -55.2 -1.0 DEC 30 52273 -.17592 .28641 -.114254 .371 .744 -54.8 -1.0 DEC 31 52274 -.17695 .29025 -.114977 .665 .535 -54.3 -.9 JAN 1 52275 -.17700 .29362 -.115823 .899 .805 -52.8 -1.1 JAN 2 52276 -.17747 .29720 -.116692 .980 .941 -52.6 -1.2 JAN 3 52277 -.17834 .30094 -.117715 .852 1.111 -52.6 -1.1 JAN 4 52278 -.17909 .30368 -.118903 .514 1.283 -52.8 -1.1 JAN 5 52279 -.17955 .30644 -.120255 .025 1.379 -53.1 -1.0 JAN 6 52280 -.17997 .30953 -.121627 -.522 1.338 -53.5 -.9 JAN 7 52281 -.18064 .31268 -.122897 -1.021 1.184 -53.8 -.8 JAN 8 52282 -.18168 .31556 -.123969 -1.380 .962 -54.0 -.7 JAN 9 52283 -.18269 .31826 -.124809 -1.542 .725 -54.1 -.7 JAN 10 52284 -.18308 .32117 -.125421 -1.494 .488 -53.9 -.8 JAN 11 52285 -.18305 .32421 -.125798 -1.259 .302 -53.6 -.9 JAN 12 52286 -.18280 .32737 -.126046 -.892 .146 -53.0 -1.0 JAN 13 52287 -.18227 .33039 -.126114 -.462 .004 -52.5 -1.3 JAN 14 52288 -.18166 .33354 -.126075 -.038 -.033 -52.2 -1.4 JAN 15 52289 -.18125 .33676 -.126065 .323 .033 -52.0 -1.6 JAN 16 52290 -.18067 .33975 -.126150 .580 .122 -52.2 -1.6 JAN 17 52291 -.17988 .34287 -.126312 .715 .224 -52.7 -1.6 JAN 18 52292 -.17926 .34610 -.126595 .728 .362 -53.3 -1.5 JAN 19 52293 -.17876 .34921 -.127026 .641 .484 -53.7 -1.5 JAN 20 52294 -.17839 .35217 -.127550 .489 .557 -54.3 -1.4 JAN 21 52295 -.17810 .35506 -.128126 .316 .595 -54.7 -1.6 JAN 22 52296 -.17767 .35820 -.128726 .165 .606 -55.0 -1.7 JAN 23 52297 -.17705 .36159 -.129324 .077 .575 -55.2 -2.0 JAN 24 52298 -.17647 .36513 -.129866 .088 .492 -55.2 -1.3 JAN 25 52299 -.17579 .36864 -.130305 .217 .389 -55.1 -1.4 IERS, B 168 (3) 3 - NORMAL VALUES OF THE EARTH ORIENTATION PARAMETERS AT FIVE-DAY INTERVALS (IERS evaluation). Raw normal values Uncertainties 2001/ 2 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 1 52244 -.11847 .19552 -.092125 -55.71 -.97 .02 .02 .02 .11 .05 DEC 6 52249 -.13179 .20853 -.093854 -53.70 -1.54 .01 .03 .02 .10 .03 DEC 11 52254 -.14672 .22257 -.098800 -55.23 -1.50 .02 .02 .03 .08 .03 DEC 16 52259 -.16000 .23580 -.102229 -54.29 -1.26 .02 .02 .04 .15 .07 DEC 21 52264 -.16927 .25173 -.104740 -53.73 -1.39 .02 .02 .02 .08 .03 DEC 26 52269 -.17303 .27046 -.110352 -54.83 -.36 .01 .02 .02 .06 .02 DEC 31 52274 -.17664 .29033 -.115054 - - .02 .03 .03 - - JAN 5 52279 -.17956 .30649 -.120254 -53.12 -.96 .02 .02 .03 .13 .05 JAN 10 52284 -.18307 .32117 -.125421 -54.09 -.73 .03 .02 .02 .12 .05 JAN 15 52289 -.18125 .33677 -.126065 - - .03 .03 .02 - - JAN 20 52294 -.17839 .35217 -.127549 -54.25 -1.42 .02 .02 .04 .15 .06 JAN 25 52299 -.17580 .36866 -.130304 - - .02 .03 .03 - - 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/ 2 MJD s (microrad/s) DEC 1 52244 .00071 72.921 15086 DEC 6 52249 .00051 15103 DEC 11 52254 .00070 15087 DEC 16 52259 .00073 15085 DEC 21 52264 .00094 15067 DEC 26 52269 .00103 15059 DEC 31 52274 .00082 15077 JAN 5 52279 .00085 15075 5 - INFORMATION ON TIME SCALES No leap second was 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 168 (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 .10 .08 .04 - .14 .06 6 52248.25 to 52285.27 .23 .08 .04 - .10 .09 EOP(BKG) 0 R 02 .09 .07 .04 - .14 .06 8 52248.00 to 52292.00 .20 .11 .07 - .14 .10 EOP(BKG) 0 R 01 - - .12 - - - 26 52246.79 to 52297.79 - - .05 - - - EOP(GSFC) 1 R 04 .14 .09 .07 - .20 .09 9 52248.25 to 52292.27 .17 .06 .04 - .16 .12 EOP(GSFC) 1 R 03 - - .12 - - - 26 52246.79 to 52297.79 - - .04 - - - EOP(IAA) 2 R 01 .08 .07 .03 - .16 .06 6 52248.25 to 52285.27 .09 .05 .04 - .43 .16 EOP(IAA) 2 R 02 - - .10 - - - 26 52246.79 to 52297.79 - - .04 - - - EOP(SPBU) 0 R 03 .08 .06 .03 - .14 .05 6 52248.25 to 52285.27 .13 .08 .03 - .10 .09 EOP(SPBU) 99 R 01 - - .14 - - - 26 52246.79 to 52297.79 - - .11 - - - EOP(USNO) 1 R 01 .09 .07 .03 - .17 .07 7 52248.25 to 52292.27 .16 .31 .09 - .15 .11 EOP(IVS) 0 R 01 .06 .05 .02 - .05 .02 4 52248.00 to 52271.00 .20 .02 .05 - .06 .09 GPS EOP(CODE) 98 P 01 .01 .01 - .37 - - 55 52244.50 to 52298.50 .08 .15 - .25 - - EOP(EMR) 96 P 03 .05 .05 - .07 - - 50 52244.50 to 52293.50 .14 .12 - .29 - - EOP(ESOC) 96 P 01 .02 .02 - .03 - - 55 52244.50 to 52298.50 .15 .15 - .24 - - EOP(GFZ) 96 P 02 .03 .03 - .03 - - 55 52244.50 to 52298.50 .06 .11 - .31 - - EOP(IAA) 1 P 01 .03 .03 - .07 - - 53 52244.50 to 52297.50 .22 .25 - .46 - - EOP(JPL) 96 P 03 .04 .04 - .15 - - 55 52244.50 to 52298.50 .07 .08 - .52 - - EOP(NOAA) 96 P 01 .03 .03 - .19 - - 55 52244.50 to 52298.50 .25 .28 - .54 - - EOP(SIO) 96 P 01 .08 .08 - .20 - - 55 52244.50 to 52298.50 .15 .12 - .24 - - EOP(IGS F)95 P 02 .03 .03 .14 .07 - - 43 52244.50 to 52286.50 .04 .08 .25 .21 - - EOP(IGS R)96 P 02 .06 .06 .24 .07 - - 55 52244.50 to 52298.50 .11 .13 .41 .19 - - EOP(IERS) 97 P 01 .05 .06 .22 .15 - - 55 52244.50 to 52298.50 .03 .07 .46 .18 - - SLR EOP(CGS) 97 L 02 .17 .16 .15 - - - 51 52244.00 to 52294.00 .65 .45 3.04 - - - EOP(CSR) 95 L 01 .34 .33 .25 - - - 18 52245.28 to 52296.05 .42 .44 1.39 - - - EOP(DUT) 98 L 01 .12 .11 - - - - 20 52245.00 to 52299.00 .43 .47 - - - - EOP(IAA) 98 L 02 .07 .06 .03 .03 - - 56 52244.00 to 52299.00 .30 .29 .67 .18 - - EOP(MCC) 97 L 01 .06 .06 - .08 - - 55 52244.00 to 52298.00 .21 .21 - .42 - - Bulletin A EOP(NEOS) 97 C 01 .06 .07 .10 - - - 56 52244.00 to 52299.00 .04 .08 .17 - - - 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.