BULLETIN B 162 01 August 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. JUN 4 52064 .22870 .38552 -.025417 -32.025417 -52.6 -5.6 JUN 9 52069 .23798 .37245 -.025368 -32.025368 -51.8 -6.6 JUN 14 52074 .24317 .35855 -.025573 -32.025573 -53.3 -6.2 JUN 19 52079 .24848 .34362 -.025424 -32.025424 -54.9 -5.5 JUN 24 52084 .24897 .32880 -.025481 -32.025481 -54.3 -6.1 JUN 29 52089 .25238 .31392 -.025907 -32.025907 -56.0 -5.9 JUL 4 52094 .25409 .29823 -.026507 -32.026507 -56.0 -5.8 Preliminary extension, to be updated weekly in Bulletin A and monthly in Bulletin B. JUL 9 52099 .25172 .28416 -.027180 -32.027180 -56.0 -6.1 JUL 14 52104 .25034 .26881 -.027125 -32.027125 -59.1 -5.8 JUL 19 52109 .24788 .25273 -.026441 -32.026441 -58.5 -5.4 JUL 24 52114 .24426 .23795 -.024641 -32.024641 -57.8 -4.7 JUL 29 52119 .23910 .22399 -.023218 -32.023218 -60.7 -4.8 AUG 3 52124 .23255 .21095 -.022076 -32.022076 -57.6 -5.5 AUG 8 52129 .22559 .19957 -.021595 -32.021595 -57.6 -4.9 AUG 13 52134 .21758 .18889 -.021755 -32.021755 -59.8 -5.1 AUG 18 52139 .20859 .17889 -.022457 -32.022457 -58.7 -5.2 AUG 23 52144 .19867 .16962 -.023632 -32.023632 -59.7 -4.4 AUG 28 52149 .18789 .16114 -.025242 -32.025242 -60.9 -5.3 SEP 2 52154 .17631 .15352 -.027264 -32.027264 -58.7 -4.9 SEP 7 52159 .16400 .14680 -.029682 -32.029682 -60.0 -4.4 SEP 12 52164 .15102 .14104 -.032490 -32.032490 -60.1 -5.2 SEP 17 52169 .13747 .13629 -.035686 -32.035686 -58.4 -4.2 SEP 22 52174 .12342 .13259 -.039211 -32.039211 -60.8 -4.3 SEP 27 52179 .10896 .12996 -.043087 -32.043087 -58.6 -4.9 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 162 (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 1999 IERS Annual Report. 2001 MJD x y UT1-UTC UT1-UT1R D dPsi dEpsilon (0 h UTC) " " s ms ms 0.001" 0.001" JUN 4 52064 .22870 .38552 -.026827 -1.411 .216 -52.6 -5.6 JUN 5 52065 .23052 .38255 -.026895 -1.426 -.015 -52.5 -5.7 JUN 6 52066 .23238 .38006 -.026766 -1.257 -.246 -52.4 -5.8 JUN 7 52067 .23440 .37740 -.026418 -.938 -.418 -52.2 -6.1 JUN 8 52068 .23645 .37473 -.025951 -.524 -.496 -51.9 -6.4 JUN 9 52069 .23798 .37245 -.025446 -.078 -.481 -51.8 -6.6 JUN 10 52070 .23912 .37010 -.025009 .341 -.382 -51.8 -6.7 JUN 11 52071 .24014 .36745 -.024697 .682 -.243 -51.9 -6.8 JUN 12 52072 .24101 .36463 -.024531 .910 -.098 -52.3 -6.7 JUN 13 52073 .24185 .36172 -.024503 1.007 .034 -52.7 -6.4 JUN 14 52074 .24317 .35855 -.024596 .977 .119 -53.3 -6.2 JUN 15 52075 .24482 .35530 -.024733 .838 .154 -53.7 -5.9 JUN 16 52076 .24623 .35233 -.024890 .621 .179 -54.3 -5.7 JUN 17 52077 .24733 .34955 -.025073 .373 .197 -54.6 -5.5 JUN 18 52078 .24817 .34656 -.025265 .148 .182 -54.8 -5.4 JUN 19 52079 .24848 .34362 -.025419 .005 .099 -54.9 -5.5 JUN 20 52080 .24835 .34079 -.025453 -.013 -.053 -54.9 -5.6 JUN 21 52081 .24827 .33783 -.025319 .103 -.129 -54.8 -5.7 JUN 22 52082 .24843 .33490 -.025216 .311 -.182 -54.5 -5.8 JUN 23 52083 .24872 .33189 -.024987 .530 -.215 -54.4 -6.0 JUN 24 52084 .24897 .32880 -.024817 .664 -.075 -54.3 -6.1 JUN 25 52085 .24948 .32573 -.024856 .635 .164 -54.3 -6.1 JUN 26 52086 .25041 .32260 -.025146 .418 .397 -54.6 -6.1 JUN 27 52087 .25127 .31977 -.025633 .039 .544 -54.9 -6.0 JUN 28 52088 .25194 .31699 -.026205 -.430 .602 -55.5 -6.0 JUN 29 52089 .25238 .31392 -.026805 -.898 .584 -56.0 -5.9 JUN 30 52090 .25299 .31072 -.027347 -1.278 .456 -56.4 -5.8 JUL 1 52091 .25378 .30761 -.027701 -1.505 .247 -56.6 -5.7 JUL 2 52092 .25394 .30443 -.027837 -1.547 .041 -56.6 -5.7 JUL 3 52093 .25375 .30119 -.027789 -1.405 -.117 -56.3 -5.7 JUL 4 52094 .25409 .29823 -.027616 -1.109 -.222 -56.0 -5.8 JUL 5 52095 .25426 .29553 -.027362 -.707 -.299 -55.7 -5.9 JUL 6 52096 .25388 .29279 -.027037 -.258 -.340 -55.5 -6.1 JUL 7 52097 .25352 .29007 -.026701 .180 -.293 -55.5 -6.2 JUL 8 52098 .25269 .28734 -.026466 .555 -.180 -55.7 -6.1 JUL 9 52099 .25172 .28416 -.026352 .828 -.077 -56.0 -6.1 JUL 10 52100 .25169 .28079 -.026315 .976 -.019 -56.5 -6.0 JUL 11 52101 .25197 .27767 -.026311 .999 .005 -57.2 -5.9 JUL 12 52102 .25154 .27469 -.026317 .913 .069 -57.9 -5.8 JUL 13 52103 .25092 .27172 -.026438 .747 .140 -58.6 -5.7 JUL 14 52104 .25034 .26881 -.026583 .542 .128 -59.1 -5.8 JUL 15 52105 .24945 .26573 -.026678 .342 .060 -59.5 -5.8 JUL 16 52106 .24845 .26230 -.026687 .197 -.031 -59.5 -5.7 JUL 17 52107 .24795 .25899 -.026603 .152 -.138 -58.8 -5.4 JUL 18 52108 .24798 .25585 -.026409 .229 -.293 -58.8 -5.4 JUL 19 52109 .24788 .25273 -.026030 .410 -.455 -58.5 -5.4 JUL 20 52110 .24755 .24966 -.025528 .632 -.528 -58.2 -5.3 JUL 21 52111 .24709 .24658 -.025009 .796 -.476 -57.9 -5.1 JUL 22 52112 .24635 .24352 -.024604 .805 -.308 -57.6 -5.0 JUL 23 52113 .24530 .24057 -.024402 .606 -.077 -57.6 -4.8 JUL 24 52114 .24426 .23795 -.024435 .206 .131 -57.8 -4.7 JUL 25 52115 .24365 .23536 -.024631 -.320 .229 -58.3 -4.6 JUL 26 52116 .24305 .23261 -.024863 -.867 .193 -58.9 -4.5 JUL 27 52117 .24211 .22977 -.025048 -1.327 .069 -59.7 -4.6 JUL 28 52118 .24071 .22690 -.025095 -1.622 -.094 -60.4 -4.7 JUL 29 52119 .23910 .22399 -.024933 -1.715 -.269 -60.7 -4.8 JUL 30 52120 .23750 .22092 -.024565 -1.608 -.457 -60.8 -5.1 IERS, B 162 (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" JUN 4 52064 .22872 .38555 -.026792 -52.57 -5.60 .04 .04 .04 .10 .05 JUN 9 52069 .23800 .37245 -.025447 - - .05 .06 .05 - - JUN 14 52074 .24317 .35855 -.024598 -53.21 -6.19 .04 .04 .03 .11 .06 JUN 19 52079 .24848 .34361 -.025422 -54.86 -5.42 .04 .04 .04 .11 .06 JUN 24 52084 .24897 .32881 -.024825 - - .05 .05 .05 - - JUN 29 52089 .25236 .31392 -.026809 -55.93 -5.90 .04 .04 .04 .15 .07 JUL 4 52094 .25407 .29823 -.027618 -56.04 -5.79 .04 .04 .03 .10 .05 JUL 9 52099 .25174 .28416 -.026358 -55.88 -6.08 .04 .04 .04 .11 .06 JUL 14 52104 .25033 .26882 -.026587 - - .05 .05 .06 - - JUL 19 52109 .24788 .25273 -.026036 - - .05 .06 .04 - - JUL 24 52114 .24426 .23795 -.024440 - - .05 .06 .07 - - JUL 29 52119 .23911 .22393 -.024934 - - .05 .05 .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 2001 MJD s (microrad/s) JUN 4 52064 .00011 72.921 15138 JUN 9 52069 -.00004 15150 JUN 14 52074 .00004 15144 JUN 19 52079 .00002 15145 JUN 24 52084 -.00002 15148 JUN 29 52089 .00015 15134 JUL 4 52094 .00014 15135 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 162 (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(GSFC) 1 R 04 .11 .08 .04 - .19 .08 6 52066.25 to 52101.25 .05 .03 .03 - .08 .05 EOP(GSFC) 1 R 03 - - .14 - - - 30 52064.80 to 52116.79 - - .06 - - - EOP(IAA) 1 R 03 - - .11 - - - 29 52064.80 to 52115.79 - - .17 - - - EOP(IAA) 1 R 04 .10 .08 .04 - .19 .08 6 52066.25 to 52101.25 .15 .13 .08 - .23 .05 EOP(SPBU) 0 R 03 .11 .09 .05 - .20 .08 6 52066.25 to 52101.25 .08 .11 .09 - .26 .04 EOP(SPBU) 99 R 01 - - .10 - - - 12 52064.80 to 52082.79 - - .23 - - - EOP(BKG) 0 R 02 .09 .07 .04 - .15 .06 6 52066.00 to 52101.00 .10 .10 .07 - .12 .08 EOP(BKG) 0 R 01 - - .10 - - - 29 52064.80 to 52116.79 - - .07 - - - GPS EOP(CODE) 98 P 01 .01 .01 - .35 - - 56 52064.50 to 52119.50 .15 .07 - .27 - - EOP(EMR) 96 P 03 .05 .05 - .08 - - 48 52064.50 to 52111.50 .13 .11 - .24 - - EOP(ESOC) 96 P 01 .02 .02 - .02 - - 52 52064.50 to 52115.50 .14 .09 - .21 - - EOP(GFZ) 96 P 02 .01 .01 - .01 - - 56 52064.50 to 52119.50 .05 .17 - .30 - - EOP(JPL) 96 P 03 .03 .04 - .13 - - 53 52064.50 to 52116.50 .06 .10 - .29 - - EOP(NOAA) 96 P 01 .03 .03 - .20 - - 53 52064.50 to 52116.50 .19 .23 - .46 - - EOP(SIO) 96 P 01 .07 .07 - .19 - - 54 52064.50 to 52117.50 .10 .08 - .39 - - EOP(IGS) 95 P 02 .06 .05 .14 .06 - - 41 52064.50 to 52104.50 .07 .10 .28 .27 - - EOP(IGS) 96 P 02 .06 .06 .22 .09 - - 56 52064.50 to 52119.50 .10 .17 .72 .31 - - EOP(IERS) 97 P 01 .05 .07 .20 .12 - - 56 52064.50 to 52119.50 .03 .05 .33 .24 - - SLR EOP(CGS) 97 L 02 .15 .15 .15 - - - 52 52064.00 to 52115.00 .51 .51 2.85 - - - EOP(CSR) 95 L 01 .26 .27 .33 - - - 19 52064.91 to 52118.83 .36 .35 1.24 - - - EOP(DUT) 98 L 01 .09 .09 - - - - 11 52065.00 to 52095.00 .49 .24 - - - - EOP(IAA) 98 L 02 .05 .05 .03 .03 - - 57 52064.00 to 52120.00 .17 .18 .61 .20 - - EOP(MCC) 97 L 01 .04 .04 - .04 - - 45 52064.00 to 52108.00 .20 .15 - .35 - - Bulletin A EOP(NEOS) 97 C 01 .06 .07 .13 - - - 57 52064.00 to 52120.00 .09 .11 .25 - - - 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.