BULLETIN B 194 2 April 2004 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 2004 " " s s 0.001" 0.001" (0h UTC) Final Bulletin B values. FEB 4 53039 -.05120 .18897 -.405146 -32.405146 -54.6 -1.7 FEB 9 53044 -.06254 .19533 -.406397 -32.406397 -54.3 -1.6 FEB 14 53049 -.07674 .20444 -.408551 -32.408551 -55.1 -1.3 FEB 19 53054 -.08657 .21486 -.410915 -32.410915 -54.4 -2.1 FEB 24 53059 -.09981 .22638 -.413662 -32.413662 -54.5 -1.9 FEB 29 53064 -.10833 .23783 -.417052 -32.417052 -54.2 -2.6 MAR 5 53069 -.11724 .24881 -.418957 -32.418957 -53.1 -3.2 Preliminary extension, to be updated weekly in Bulletin A and monthly in Bulletin B. MAR 10 53074 -.12292 .26000 -.420586 -32.420586 -53.9 -2.7 MAR 15 53079 -.12683 .27060 -.422354 -32.422354 -53.4 -3.0 MAR 20 53084 -.13164 .28183 -.424462 -32.424462 -53.1 -3.3 MAR 25 53089 -.13288 .29840 -.428592 -32.428592 -52.6 -3.8 MAR 30 53094 -.13868 .31483 -.433377 -32.433377 -51.6 -4.1 APR 4 53099 -.14134 .33003 -.437977 -32.437977 -49.0 -3.9 APR 9 53104 -.14216 .34475 -.442326 -32.442326 -50.7 -3.9 APR 14 53109 -.14127 .35903 -.446285 -32.446285 -49.2 -4.5 APR 19 53114 -.13908 .37297 -.449879 -32.449879 -49.0 -4.0 APR 24 53119 -.13569 .38660 -.453159 -32.453159 -49.3 -4.6 APR 29 53124 -.13122 .39986 -.456104 -32.456104 -48.3 -5.1 MAY 4 53129 -.12573 .41272 -.458714 -32.458714 -49.2 -4.5 MAY 9 53134 -.11929 .42510 -.460972 -32.460972 -50.2 -5.0 MAY 14 53139 -.11196 .43693 -.462841 -32.462841 -48.8 -4.9 MAY 19 53144 -.10378 .44814 -.464329 -32.464329 -50.1 -4.5 MAY 24 53149 -.09483 .45868 -.465412 -32.465412 -49.7 -5.4 MAY 29 53154 -.08516 .46849 -.466099 -32.466099 -49.5 -5.0 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 194 (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 2002 IERS Annual Report. 2004 MJD x y UT1-UTC UT1-UT1R D dPsi dEpsilon (0 h UTC) " " s ms ms 0.001" 0.001" FEB 4 53039 -.05120 .18897 -.404451 .695 -.266 -54.6 -1.7 FEB 5 53040 -.05416 .18978 -.404202 1.155 -.183 -54.5 -1.7 FEB 6 53041 -.05664 .19071 -.404117 1.467 .011 -54.4 -1.8 FEB 7 53042 -.05878 .19197 -.404239 1.572 .258 -54.3 -1.8 FEB 8 53043 -.06061 .19354 -.404635 1.445 .534 -54.2 -1.7 FEB 9 53044 -.06254 .19533 -.405294 1.103 .757 -54.3 -1.6 FEB 10 53045 -.06488 .19714 -.406121 .612 .889 -54.3 -1.5 FEB 11 53046 -.06765 .19907 -.407035 .068 .939 -54.5 -1.4 FEB 12 53047 -.07072 .20089 -.407962 -.413 .875 -54.7 -1.3 FEB 13 53048 -.07376 .20261 -.408757 -.731 .711 -54.9 -1.3 FEB 14 53049 -.07674 .20444 -.409372 -.821 .493 -55.1 -1.3 FEB 15 53050 -.07946 .20620 -.409750 -.675 .250 -55.1 -1.4 FEB 16 53051 -.08151 .20807 -.409901 -.349 .082 -55.1 -1.5 FEB 17 53052 -.08287 .21005 -.409955 .050 .067 -54.9 -1.8 FEB 18 53053 -.08421 .21227 -.410077 .395 .177 -54.6 -2.0 FEB 19 53054 -.08657 .21486 -.410338 .578 .365 -54.4 -2.1 FEB 20 53055 -.08984 .21722 -.410815 .540 .631 -54.3 -2.1 FEB 21 53056 -.09301 .21950 -.411585 .291 .865 -54.3 -2.1 FEB 22 53057 -.09564 .22197 -.412516 -.101 .991 -54.3 -2.0 FEB 23 53058 -.09791 .22427 -.413532 -.543 1.056 -54.4 -1.9 FEB 24 53059 -.09981 .22638 -.414599 -.937 1.044 -54.5 -1.9 FEB 25 53060 -.10126 .22861 -.415598 -1.206 .896 -54.6 -2.0 FEB 26 53061 -.10248 .23094 -.416379 -1.301 .685 -54.7 -2.2 FEB 27 53062 -.10390 .23339 -.416968 -1.205 .502 -54.6 -2.4 FEB 28 53063 -.10597 .23580 -.417389 -.927 .284 -54.5 -2.5 FEB 29 53064 -.10833 .23783 -.417552 -.500 .038 -54.2 -2.6 MAR 1 53065 -.11048 .23982 -.417486 .023 -.121 -53.9 -2.6 MAR 2 53066 -.11228 .24203 -.417334 .572 -.148 -53.6 -2.7 MAR 3 53067 -.11387 .24417 -.417217 1.071 -.083 -53.4 -2.9 MAR 4 53068 -.11545 .24634 -.417194 1.441 .053 -53.3 -3.1 MAR 5 53069 -.11724 .24881 -.417344 1.613 .258 -53.1 -3.2 MAR 6 53070 -.11892 .25142 -.417719 1.542 .487 -53.0 -3.2 MAR 7 53071 -.12026 .25403 -.418311 1.226 .732 -53.0 -3.0 MAR 8 53072 -.12151 .25616 -.419156 .718 .923 -53.1 -2.9 MAR 9 53073 -.12229 .25800 -.420116 .120 .957 -53.4 -2.7 MAR 10 53074 -.12292 .26000 -.421026 -.440 .840 -53.9 -2.7 MAR 11 53075 -.12370 .26208 -.421761 -.838 .596 -54.4 -2.9 MAR 12 53076 -.12439 .26406 -.422201 -.996 .346 -54.7 -3.0 MAR 13 53077 -.12515 .26617 -.422458 -.896 .179 -54.6 -3.1 MAR 14 53078 -.12596 .26847 -.422586 -.588 .015 -54.1 -3.1 MAR 15 53079 -.12683 .27060 -.422527 -.173 -.086 -53.4 -3.0 MAR 16 53080 -.12801 .27274 -.422454 .227 .006 -52.8 -3.1 MAR 17 53081 -.12915 .27479 -.422572 .498 .221 -52.5 -3.2 MAR 18 53082 -.12998 .27703 -.422912 .567 .462 -52.6 -3.4 MAR 19 53083 -.13107 .27953 -.423491 .418 .741 -52.9 -3.4 MAR 20 53084 -.13164 .28183 -.424371 .091 1.033 -53.1 -3.3 MAR 21 53085 -.13178 .28464 -.425524 -.332 1.150 -53.2 -3.2 MAR 22 53086 -.13185 .28786 -.426638 -.751 1.113 -53.2 -3.1 MAR 23 53087 -.13183 .29124 -.427724 -1.078 1.103 -53.1 -3.1 MAR 24 53088 -.13201 .29490 -.428828 -1.247 1.049 -53.0 -3.4 MAR 25 53089 -.13288 .29840 -.429815 -1.223 .902 -52.6 -3.8 IERS, B 194 (3) 3 - NORMAL VALUES OF THE EARTH ORIENTATION PARAMETERS AT FIVE-DAY INTERVALS (IERS evaluation). Raw normal values Uncertainties 2004 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 53039 -.05119 .18896 -.404460 -54.66 -1.64 .01 .02 .02 .06 .02 FEB 9 53044 -.06253 .19533 -.405293 -54.26 -1.60 .02 .02 .03 .08 .03 FEB 14 53049 -.07674 .20444 -.409373 -55.00 -1.31 .02 .02 .04 .09 .04 FEB 19 53054 -.08659 .21486 -.410337 -54.38 -2.12 .02 .02 .02 .05 .02 FEB 24 53059 -.09981 .22638 -.414602 -54.53 -1.93 .02 .02 .02 .10 .04 FEB 29 53064 -.10833 .23783 -.417553 -54.23 -2.58 .02 .02 .02 .05 .02 MAR 5 53069 -.11725 .24880 -.417343 -53.17 -3.26 .01 .01 .03 .09 .04 MAR 10 53074 -.12291 .25999 -.421027 -53.83 -2.70 .01 .02 .02 .04 .02 MAR 15 53079 -.12684 .27061 -.422527 -53.41 -3.04 .01 .01 .02 .06 .03 MAR 20 53084 -.13163 .28182 -.424373 -53.09 -3.32 .02 .03 .05 .19 .09 MAR 25 53089 -.13289 .29840 -.429816 -52.64 -3.78 .02 .03 .03 .09 .04 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 2004 MJD s (microrad/s) FEB 4 53039 .00025 72.921 15126 FEB 9 53044 .00033 15119 FEB 14 53049 .00053 15102 FEB 19 53054 .00045 15109 FEB 24 53059 .00071 15087 FEB 29 53064 .00053 15102 MAR 5 53069 .00032 15120 5 - INFORMATION ON TIME SCALES No leap second was introduced in UTC on 31 December 2003. No leap second will be introduced in UTC on 30 June 2004. 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 194 (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 .30 .35 .18 - .07 .03 14 53041.27 to 53087.21 .19 .20 .09 - .14 .05 EOP(BKG) 3 R 04 .10 .09 .04 - .18 .07 12 53041.27 to 53080.20 .27 .17 .04 - .21 .07 EOP(BKG) 3 R 02 - - .17 - - - 31 53039.79 to 53087.79 - - .16 - - - EOP(GSFC) 3 R 06 .08 .07 .03 - .17 .06 15 53041.27 to 53087.21 .28 .14 .03 - .16 .03 EOP(GSFC) 3 R 05 - - .16 - - - 31 53039.79 to 53087.79 - - .24 - - - EOP(IAA) 3 R 04 .07 .07 .03 - - - 14 53041.27 to 53087.21 .21 .15 .04 - - - EOP(IAA) 3 R 03 - - .14 - - - 31 53039.79 to 53087.79 - - .15 - - - EOP(SPBU) 3 R 03 .31 .36 .19 - .08 .03 12 53045.21 to 53083.27 .15 .23 .08 - .16 .07 EOP(SPBU) 2 R 01 - - .15 - - - 25 53039.79 to 53087.79 - - .15 - - - EOP(MAO) 3 R 01 .10 .09 .04 - - - 13 53041.26 to 53083.28 .33 .18 .05 - - - EOP(USNO) 3 R 04 .09 .08 .04 - .20 .08 14 53041.27 to 53087.21 .18 .09 .05 - .22 .08 EOP(IVS) 0 R 01 .05 .05 .02 - .05 .03 14 53041.00 to 53087.00 .21 .11 .05 - .11 .04 GPS EOP(CODE) 98 P 01 .01 .01 - .27 - - 50 53039.50 to 53088.50 .06 .06 - .30 - - EOP(EMR) 96 P 03 .03 .03 - .04 - - 50 53039.50 to 53088.50 .06 .09 - .36 - - EOP(ESOC) 96 P 01 .01 .02 - .03 - - 47 53039.50 to 53085.50 .20 .07 - .40 - - EOP(GFZ) 96 P 02 .01 .01 - .01 - - 50 53039.50 to 53088.50 .09 .08 - .37 - - EOP(IAA) 1 P 01 .02 .03 - .06 - - 50 53039.50 to 53088.50 .11 .15 - .37 - - EOP(JPL) 96 P 03 .02 .03 - .14 - - 50 53039.50 to 53088.50 .04 .06 - .72 - - EOP(NOAA) 96 P 01 .01 .01 - .02 - - 50 53039.50 to 53088.50 .22 .37 - .60 - - EOP(SIO) 96 P 01 .05 .05 - .13 - - 50 53039.50 to 53088.50 .07 .07 - .29 - - EOP(IGS F)95 P 02 .01 .03 .08 .05 - - 39 53039.50 to 53077.50 .03 .07 .25 .26 - - EOP(IGS R)96 P 02 .03 .04 .23 .06 - - 50 53039.50 to 53088.50 .07 .06 .93 .25 - - EOP(IERS) 97 P 01 .03 .04 .24 .17 - - 50 53039.50 to 53088.50 .02 .02 .43 .18 - - SLR EOP(ASI) 3 L 02 .08 .08 - .19 - - 50 53039.50 to 53088.50 .25 .28 - .88 - - EOP(CSR) 95 L 01 .23 .27 .18 - - - 8 53040.05 to 53059.74 .55 .62 1.43 - - - EOP(DUT) 98 L 01 .11 .12 - - - - 25 53039.00 to 53063.00 .26 .33 - - - - EOP(IAA) 2 L 01 .04 .05 .03 .03 - - 51 53039.00 to 53089.00 .15 .13 .30 .17 - - EOP(MCC) 97 L 01 .05 .06 - .10 - - 44 53039.00 to 53089.00 .14 .25 - .63 - - Bulletin A EOP(NEOS) 97 C 01 .07 .07 .07 - - - 51 53039.00 to 53089.00 .08 .05 .23 - - -