BULLETIN B 171 2 May 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 2002 " " s s 0.001" 0.001" (0h UTC) Final Bulletin B values. MAR 1 52334 -.12336 .47654 -.160988 -32.160988 -51.4 -3.0 MAR 6 52339 -.11187 .49171 -.165994 -32.165994 -51.9 -2.8 MAR 11 52344 -.09681 .50515 -.170966 -32.170966 -51.4 -3.7 MAR 16 52349 -.08486 .51647 -.175500 -32.175500 -51.3 -3.0 MAR 21 52354 -.06925 .52560 -.179202 -32.179202 -50.8 -3.7 MAR 26 52359 -.05135 .53396 -.183034 -32.183034 -50.8 -4.9 MAR 31 52364 -.03451 .54031 -.186950 -32.186950 -49.6 -4.1 APR 5 52369 -.01496 .54420 -.190962 -32.190962 -50.7 -5.0 Preliminary extension, to be updated weekly in Bulletin A and monthly in Bulletin B. APR 10 52374 -.00175 .54928 -.194991 -32.194991 -50.4 -4.2 APR 15 52379 .01293 .55255 -.198830 -32.198830 -51.0 -4.5 APR 20 52384 .02892 .55486 -.201953 -32.201953 -51.0 -5.0 APR 25 52389 .04489 .55440 -.204876 -32.204876 -50.1 -4.3 APR 30 52394 .06353 .55270 -.208594 -32.208594 -52.4 -4.5 MAY 5 52399 .08192 .55069 -.212154 -32.212154 -49.1 -5.7 MAY 10 52404 .10187 .54645 -.215801 -32.215801 -49.0 -5.1 MAY 15 52409 .12179 .54069 -.219150 -32.219150 -50.1 -5.3 MAY 20 52414 .14139 .53346 -.222149 -32.222149 -48.9 -5.5 MAY 25 52419 .16047 .52482 -.224766 -32.224766 -50.4 -5.0 MAY 30 52424 .17886 .51482 -.227009 -32.227009 -51.1 -5.4 JUN 4 52429 .19644 .50351 -.228870 -32.228870 -50.5 -5.4 JUN 9 52434 .21308 .49095 -.230335 -32.230335 -51.9 -4.8 JUN 14 52439 .22865 .47722 -.231403 -32.231403 -52.4 -5.3 JUN 19 52444 .24306 .46239 -.232136 -32.232136 -52.0 -4.9 JUN 24 52449 .25620 .44655 -.232532 -32.232532 -54.6 -4.9 JUN 29 52454 .26799 .42979 -.232632 -32.232632 -53.9 -5.2 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 171 (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. 2002 MJD x y UT1-UTC UT1-UT1R D dPsi dEpsilon (0 h UTC) " " s ms ms 0.001" 0.001" MAR 1 52334 -.12336 .47654 -.161023 -.035 1.637 -51.4 -3.0 MAR 2 52335 -.12089 .47983 -.162675 -.745 1.653 -51.3 -2.7 MAR 3 52336 -.11838 .48283 -.164283 -1.344 1.516 -51.2 -2.4 MAR 4 52337 -.11664 .48586 -.165682 -1.724 1.266 -51.4 -2.4 MAR 5 52338 -.11453 .48888 -.166811 -1.841 1.004 -51.7 -2.5 MAR 6 52339 -.11187 .49171 -.167705 -1.711 .796 -51.9 -2.8 MAR 7 52340 -.10877 .49428 -.168428 -1.396 .650 -52.1 -3.1 MAR 8 52341 -.10551 .49700 -.169033 -.974 .578 -52.1 -3.5 MAR 9 52342 -.10226 .49971 -.169608 -.522 .554 -51.9 -3.7 MAR 10 52343 -.09916 .50244 -.170160 -.109 .564 -51.6 -3.8 MAR 11 52344 -.09681 .50515 -.170750 .216 .656 -51.4 -3.7 MAR 12 52345 -.09504 .50756 -.171479 .423 .816 -51.3 -3.5 MAR 13 52346 -.09284 .50989 -.172382 .504 .949 -51.2 -3.3 MAR 14 52347 -.09022 .51207 -.173369 .470 .995 -51.3 -3.2 MAR 15 52348 -.08766 .51437 -.174358 .352 .976 -51.3 -3.1 MAR 16 52349 -.08486 .51647 -.175305 .195 .932 -51.3 -3.0 MAR 17 52350 -.08184 .51843 -.176205 .051 .874 -51.2 -3.1 MAR 18 52351 -.07870 .52025 -.177039 -.032 .786 -51.0 -3.2 MAR 19 52352 -.07563 .52221 -.177767 -.018 .662 -50.9 -3.3 MAR 20 52353 -.07257 .52399 -.178360 .116 .531 -50.8 -3.5 MAR 21 52354 -.06925 .52560 -.178834 .369 .427 -50.8 -3.7 MAR 22 52355 -.06577 .52746 -.179229 .713 .382 -50.9 -4.0 MAR 23 52356 -.06227 .52910 -.179623 1.093 .421 -51.0 -4.4 MAR 24 52357 -.05881 .53071 -.180103 1.420 .527 -51.1 -4.7 MAR 25 52358 -.05518 .53216 -.180712 1.589 .699 -51.0 -4.9 MAR 26 52359 -.05135 .53396 -.181525 1.509 .973 -50.8 -4.9 MAR 27 52360 -.04790 .53580 -.182659 1.142 1.302 -50.5 -4.8 MAR 28 52361 -.04485 .53727 -.184102 .530 1.531 -50.2 -4.5 MAR 29 52362 -.04173 .53849 -.185672 -.213 1.546 -49.9 -4.3 MAR 30 52363 -.03825 .53942 -.187140 -.928 1.396 -49.7 -4.1 MAR 31 52364 -.03451 .54031 -.188422 -1.472 1.179 -49.6 -4.1 APR 1 52365 -.03076 .54066 -.189480 -1.753 .929 -49.7 -4.2 APR 2 52366 -.02685 .54115 -.190286 -1.757 .677 -49.9 -4.4 APR 3 52367 -.02298 .54172 -.190857 -1.531 .480 -50.1 -4.7 APR 4 52368 -.01883 .54282 -.191276 -1.155 .398 -50.5 -4.9 APR 5 52369 -.01496 .54420 -.191681 -.719 .389 -50.7 -5.0 APR 6 52370 -.01156 .54576 -.192077 -.302 .436 -50.8 -5.0 APR 7 52371 -.00877 .54691 -.192568 .040 .538 -50.7 -4.9 APR 8 52372 -.00615 .54788 -.193162 .270 .637 -50.6 -4.7 APR 9 52373 -.00376 .54864 -.193843 .373 .739 -50.5 -4.4 APR 10 52374 -.00175 .54928 -.194634 .357 .857 -50.4 -4.2 APR 11 52375 .00061 .54967 -.195546 .246 .942 -50.5 -4.0 APR 12 52376 .00374 .55034 -.196503 .083 .966 -50.6 -4.0 APR 13 52377 .00684 .55128 -.197459 -.083 .923 -50.7 -4.0 APR 14 52378 .00991 .55169 -.198332 -.198 .800 -50.8 -4.2 APR 15 52379 .01293 .55255 -.199046 -.216 .615 -51.0 -4.5 APR 16 52380 .01572 .55315 -.199556 -.110 .435 -51.2 -4.7 APR 17 52381 .01882 .55368 -.199920 .128 .315 -51.4 -4.9 APR 18 52382 .02215 .55413 -.200198 .473 .261 -51.7 -4.9 APR 19 52383 .02548 .55453 -.200463 .877 .231 -51.4 -5.0 APR 20 52384 .02892 .55486 -.200690 1.263 .237 -51.0 -5.0 APR 21 52385 .03203 .55504 -.200970 1.538 .370 -50.4 -4.9 APR 22 52386 .03486 .55476 -.201458 1.610 .635 -49.9 -4.9 APR 23 52387 .03787 .55484 -.202251 1.418 .936 -49.7 -4.7 APR 24 52388 .04124 .55461 -.203318 .958 1.179 -49.7 -4.5 APR 25 52389 .04489 .55440 -.204574 .302 1.358 -50.1 -4.3 APR 26 52390 .04865 .55426 -.205984 -.420 1.428 -50.7 -4.1 APR 27 52391 .05247 .55395 -.207474 -1.055 1.312 -51.4 -4.0 APR 28 52392 .05636 .55307 -.208669 -1.477 1.032 -52.0 -4.0 APR 29 52393 .05992 .55285 -.209531 -1.625 .700 -52.4 -4.2 APR 30 52394 .06353 .55270 -.210108 -1.514 .450 -52.4 -4.5 IERS, B 171 (3) 3 - NORMAL VALUES OF THE EARTH ORIENTATION PARAMETERS AT FIVE-DAY INTERVALS (IERS evaluation). Raw normal values Uncertainties 2002 MJD x y UT1-UTC dPsi dEps x y UT1 dPsi dEps (0 h UTC) " " s 0.001" 0.001" 0.0001s 0.001" MAR 1 52334 -.12329 .47648 -.161021 -51.53 -2.98 .01 .01 .02 .09 .03 MAR 6 52339 -.11187 .49172 -.167706 -52.03 -2.81 .02 .01 .02 .09 .03 MAR 11 52344 -.09679 .50515 -.170750 -51.34 -3.67 .02 .02 .01 .05 .02 MAR 16 52349 -.08486 .51647 -.175305 -51.48 -3.08 .02 .02 .02 .08 .03 MAR 21 52354 -.06925 .52560 -.178834 -50.84 -3.73 .02 .01 .02 .08 .03 MAR 26 52359 -.05136 .53394 -.181524 -50.85 -4.90 .02 .02 .02 .07 .03 MAR 31 52364 -.03450 .54031 -.188422 - - .02 .01 .02 - - APR 5 52369 -.01497 .54421 -.191680 -50.71 -5.02 .02 .01 .01 .07 .02 APR 10 52374 -.00176 .54928 -.194633 -50.45 -4.17 .02 .02 .02 .08 .03 APR 15 52379 .01294 .55255 -.199047 - - .02 .02 .02 - - APR 20 52384 .02893 .55486 -.200690 - - .02 .02 .02 - - APR 25 52389 .04489 .55437 -.204557 - - .04 .05 .05 - - APR 30 52394 .06347 .55274 .000000 - - .05 .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 2002 MJD s (microrad/s) MAR 1 52334 .00092 72.921 15069 MAR 6 52339 .00104 15059 MAR 11 52344 .00093 15068 MAR 16 52349 .00078 15081 MAR 21 52354 .00074 15084 MAR 26 52359 .00076 15083 MAR 31 52364 .00076 15082 APR 5 52369 .00083 15076 5 - INFORMATION ON TIME SCALES No leap second will be introduced in UTC on 30 June 2002. 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 171 (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 .08 .07 .03 - .12 .05 6 52334.27 to 52361.27 .08 .10 .03 - .18 .05 EOP(BKG) 1 R 03 .10 .08 .03 - .13 .06 11 52334.00 to 52376.00 .20 .17 .05 - .15 .08 EOP(BKG) 1 R 02 - - .08 - - - 32 52334.81 to 52390.81 - - .14 - - - EOP(GSFC) 1 R 04 .08 .06 .03 - .14 .06 10 52334.27 to 52373.21 .15 .11 .05 - .13 .07 EOP(GSFC) 1 R 03 - - .10 - - - 32 52334.81 to 52390.81 - - .12 - - - EOP(IAA) 2 R 01 .06 .05 .02 - .13 .05 10 52334.27 to 52373.21 .23 .18 .06 - .15 .02 EOP(IAA) 2 R 02 - - .08 - - - 32 52334.81 to 52390.81 - - .13 - - - EOP(SPBU) 99 R 01 - - .09 - - - 14 52334.81 to 52359.79 - - .12 - - - EOP(SPBU) 99 R 01 - - .09 - - - 14 52334.81 to 52359.79 - - .12 - - - EOP(USNO) 1 R 01 .07 .06 .03 - .14 .06 5 52334.27 to 52355.27 .20 .13 .04 - .09 .07 GPS EOP(CODE) 98 P 01 .01 .01 - .37 - - 60 52334.50 to 52393.50 .05 .13 - .22 - - EOP(EMR) 96 P 03 .05 .05 - .08 - - 51 52334.50 to 52384.50 .12 .09 - .27 - - EOP(ESOC) 96 P 01 .02 .02 - .03 - - 60 52334.50 to 52393.50 .16 .10 - .27 - - EOP(GFZ) 96 P 02 .04 .04 - .02 - - 60 52334.50 to 52393.50 .11 .12 - .28 - - EOP(IAA) 1 P 01 .03 .03 - .07 - - 59 52334.50 to 52392.50 .20 .15 - .45 - - EOP(JPL) 96 P 03 .03 .04 - .17 - - 60 52334.50 to 52393.50 .09 .08 - .44 - - EOP(NOAA) 96 P 01 .03 .02 - .18 - - 54 52334.50 to 52387.50 .15 .27 - .49 - - EOP(SIO) 96 P 01 .08 .08 - .23 - - 60 52334.50 to 52393.50 .07 .10 - .28 - - EOP(IGS F)95 P 02 .05 .06 .09 .07 - - 44 52334.50 to 52377.50 .08 .05 .23 .19 - - EOP(IGS R)96 P 02 .05 .05 .23 .08 - - 60 52334.50 to 52393.50 .09 .15 .66 .22 - - EOP(IERS) 97 P 01 .05 .05 .24 .16 - - 60 52334.50 to 52393.50 .05 .04 .27 .19 - - SLR EOP(CGS) 97 L 02 .27 .27 .26 - - - 51 52334.00 to 52384.00 .94 .76 1.67 - - - EOP(CSR) 95 L 01 .30 .31 .26 - - - 20 52334.80 to 52392.22 .55 .60 .94 - - - EOP(DUT) 98 L 01 .10 .10 - - - - 19 52335.00 to 52389.00 .34 .26 - - - - EOP(IAA) 2 L 01 .03 .03 .02 .02 - - 61 52334.00 to 52394.00 .10 .12 .32 .15 - - EOP(MCC) 97 L 01 .04 .04 - .04 - - 56 52334.00 to 52389.00 .16 .16 - .41 - - Bulletin A EOP(NEOS) 97 C 01 .05 .05 .08 - - - 61 52334.00 to 52394.00 .05 .08 .23 - - - 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.