********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 26 January 2006 Vol. XIX No. 004 ______________________________________________________________________ GENERAL INFORMATION: To receive this information electronically, contact: ser7@maia.usno.navy.mil or use MJD = Julian Date - 2 400 000.5 days UT2-UT1 = 0.022 sin(2*pi*T) - 0.012 cos(2*pi*T) - 0.006 sin(4*pi*T) + 0.007 cos(4*pi*T) where pi = 3.14159265... and T is the date in Besselian years. TT = TAI + 32.184 seconds DUT1= (UT1-UTC) transmitted with time signals = +0.3 seconds beginning 01 January 2006 at 0000 UTC Beginning 1 January 2006: TAI-UTC(BIPM) = 33.000 000 seconds ********************************************************************** * >>> A positive leap second was introduced in UTC on <<< * * >>> 31 December 2005. <<< * * * * See notice at the end of this Bulletin A for more details. * ********************************************************************** ________________________________________________________________________ The contributed observations used in the preparation of this Bulletin are available at . The contributed analysis results are based on data from Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR), the Global Positioning System (GPS) satellites, Lunar Laser Ranging (LLR), and meteorological predictions of variations in Atmospheric Angular Momentum (AAM). ________________________________________________________________________ COMBINED EARTH ORIENTATION PARAMETERS: IERS Rapid Service MJD x error y error UT1-UTC error " " " " s s 6 1 20 53755 .05054 .00003 .38092 .00006 .332513 .000016 6 1 21 53756 .05025 .00003 .38116 .00006 .331861 .000017 6 1 22 53757 .05018 .00002 .38121 .00006 .331182 .000010 6 1 23 53758 .05025 .00001 .38073 .00005 .330532 .000010 6 1 24 53759 .05027 .00001 .38023 .00005 .329970 .000010 6 1 25 53760 .05018 .00001 .38032 .00005 .329511 .000010 6 1 26 53761 .05003 .00001 .38068 .00004 .329103 .000010 _______________________________________________________________________ PREDICTIONS: The following formulas will not reproduce the predictions given below, but may be used to extend the predictions beyond the end of this table. x = .0433 - .1229 cos A - .1096 sin A + .1311 cos C + .1263 sin C y = .3589 - .1065 cos A + .1120 sin A + .1263 cos C - .1311 sin C UT1-UTC = .3204 - .00040 (MJD - 53766) - (UT2-UT1) where A = 2*pi*(MJD-53761)/365.25 and C = 2*pi*(MJD-53761)/435. TAI-UTC(MJD 53762) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-53761)**0.80 S t = 0.00025 (MJD-53761)**0.75 Estimated accuracies are: Predictions 10 d 20 d 30 d 40 d Polar coord's 0.004 0.007 0.010 0.013 UT1-UTC 0.0014 0.0024 0.0032 0.0040 MJD x(arcsec) y(arcsec) UT1-UTC(sec) 2006 1 27 53762 0.0499 0.3810 0.32869 2006 1 28 53763 0.0499 0.3813 0.32823 2006 1 29 53764 0.0499 0.3815 0.32758 2006 1 30 53765 0.0500 0.3816 0.32664 2006 1 31 53766 0.0501 0.3817 0.32537 2006 2 1 53767 0.0503 0.3818 0.32382 2006 2 2 53768 0.0505 0.3818 0.32214 2006 2 3 53769 0.0507 0.3818 0.32051 2006 2 4 53770 0.0510 0.3818 0.31916 2006 2 5 53771 0.0512 0.3818 0.31819 2006 2 6 53772 0.0515 0.3818 0.31760 2006 2 7 53773 0.0518 0.3817 0.31731 2006 2 8 53774 0.0521 0.3817 0.31724 2006 2 9 53775 0.0524 0.3817 0.31727 2006 2 10 53776 0.0527 0.3816 0.31729 2006 2 11 53777 0.0530 0.3816 0.31723 2006 2 12 53778 0.0534 0.3815 0.31702 2006 2 13 53779 0.0537 0.3815 0.31664 2006 2 14 53780 0.0540 0.3815 0.31609 2006 2 15 53781 0.0544 0.3814 0.31539 2006 2 16 53782 0.0548 0.3814 0.31457 2006 2 17 53783 0.0551 0.3814 0.31369 2006 2 18 53784 0.0555 0.3813 0.31283 2006 2 19 53785 0.0559 0.3813 0.31203 2006 2 20 53786 0.0563 0.3813 0.31136 2006 2 21 53787 0.0567 0.3812 0.31083 2006 2 22 53788 0.0571 0.3812 0.31047 2006 2 23 53789 0.0575 0.3812 0.31021 2006 2 24 53790 0.0579 0.3812 0.30997 2006 2 25 53791 0.0584 0.3811 0.30959 2006 2 26 53792 0.0588 0.3811 0.30897 2006 2 27 53793 0.0592 0.3811 0.30800 2006 2 28 53794 0.0597 0.3811 0.30671 2006 3 1 53795 0.0601 0.3811 0.30519 2006 3 2 53796 0.0606 0.3811 0.30362 2006 3 3 53797 0.0611 0.3810 0.30218 2006 3 4 53798 0.0615 0.3810 0.30102 2006 3 5 53799 0.0620 0.3810 0.30018 2006 3 6 53800 0.0625 0.3810 0.29962 2006 3 7 53801 0.0630 0.3810 0.29927 2006 3 8 53802 0.0635 0.3810 0.29902 2006 3 9 53803 0.0640 0.3809 0.29877 2006 3 10 53804 0.0645 0.3809 0.29845 2006 3 11 53805 0.0650 0.3809 0.29798 2006 3 12 53806 0.0656 0.3808 0.29734 2006 3 13 53807 0.0661 0.3808 0.29651 2006 3 14 53808 0.0666 0.3808 0.29552 2006 3 15 53809 0.0671 0.3807 0.29441 2006 3 16 53810 0.0677 0.3807 0.29326 2006 3 17 53811 0.0682 0.3807 0.29211 2006 3 18 53812 0.0688 0.3806 0.29106 2006 3 19 53813 0.0693 0.3806 0.29015 2006 3 20 53814 0.0699 0.3805 0.28942 2006 3 21 53815 0.0704 0.3804 0.28887 2006 3 22 53816 0.0710 0.3804 0.28847 2006 3 23 53817 0.0716 0.3803 0.28812 2006 3 24 53818 0.0721 0.3802 0.28771 2006 3 25 53819 0.0727 0.3801 0.28711 2006 3 26 53820 0.0733 0.3801 0.28621 2006 3 27 53821 0.0739 0.3800 0.28497 2006 3 28 53822 0.0744 0.3799 0.28344 2006 3 29 53823 0.0750 0.3798 0.28176 2006 3 30 53824 0.0756 0.3797 0.28012 2006 3 31 53825 0.0762 0.3796 0.27870 2006 4 1 53826 0.0768 0.3795 0.27761 2006 4 2 53827 0.0774 0.3793 0.27685 2006 4 3 53828 0.0780 0.3792 0.27637 2006 4 4 53829 0.0786 0.3791 0.27606 2006 4 5 53830 0.0792 0.3789 0.27580 2006 4 6 53831 0.0798 0.3788 0.27549 2006 4 7 53832 0.0804 0.3786 0.27508 2006 4 8 53833 0.0810 0.3785 0.27450 2006 4 9 53834 0.0816 0.3783 0.27374 2006 4 10 53835 0.0822 0.3781 0.27283 2006 4 11 53836 0.0828 0.3779 0.27178 2006 4 12 53837 0.0834 0.3777 0.27067 2006 4 13 53838 0.0840 0.3775 0.26955 2006 4 14 53839 0.0846 0.3773 0.26851 2006 4 15 53840 0.0852 0.3771 0.26761 2006 4 16 53841 0.0858 0.3768 0.26690 2006 4 17 53842 0.0865 0.3766 0.26639 2006 4 18 53843 0.0871 0.3763 0.26606 2006 4 19 53844 0.0877 0.3761 0.26583 2006 4 20 53845 0.0883 0.3758 0.26559 2006 4 21 53846 0.0889 0.3755 0.26522 2006 4 22 53847 0.0895 0.3752 0.26460 2006 4 23 53848 0.0901 0.3749 0.26368 2006 4 24 53849 0.0907 0.3746 0.26246 2006 4 25 53850 0.0913 0.3743 0.26104 2006 4 26 53851 0.0919 0.3740 0.25958 2006 4 27 53852 0.0925 0.3736 0.25824 2006 4 28 53853 0.0931 0.3733 0.25717 2006 4 29 53854 0.0937 0.3729 0.25642 2006 4 30 53855 0.0943 0.3725 0.25598 2006 5 1 53856 0.0949 0.3721 0.25576 2006 5 2 53857 0.0955 0.3717 0.25564 2006 5 3 53858 0.0961 0.3713 0.25552 2006 5 4 53859 0.0966 0.3709 0.25532 2006 5 5 53860 0.0972 0.3705 0.25497 2006 5 6 53861 0.0978 0.3700 0.25447 2006 5 7 53862 0.0984 0.3696 0.25381 2006 5 8 53863 0.0990 0.3691 0.25303 2006 5 9 53864 0.0995 0.3686 0.25219 2006 5 10 53865 0.1001 0.3681 0.25134 2006 5 11 53866 0.1007 0.3676 0.25055 2006 5 12 53867 0.1012 0.3671 0.24992 2006 5 13 53868 0.1018 0.3666 0.24947 2006 5 14 53869 0.1023 0.3660 0.24924 2006 5 15 53870 0.1029 0.3655 0.24921 2006 5 16 53871 0.1034 0.3649 0.24930 2006 5 17 53872 0.1039 0.3643 0.24942 2006 5 18 53873 0.1045 0.3637 0.24945 2006 5 19 53874 0.1050 0.3631 0.24928 2006 5 20 53875 0.1055 0.3625 0.24885 2006 5 21 53876 0.1060 0.3619 0.24816 2006 5 22 53877 0.1065 0.3612 0.24727 2006 5 23 53878 0.1071 0.3606 0.24631 2006 5 24 53879 0.1076 0.3599 0.24544 2006 5 25 53880 0.1080 0.3592 0.24478 2006 5 26 53881 0.1085 0.3585 0.24443 2006 5 27 53882 0.1090 0.3578 0.24439 2006 5 28 53883 0.1095 0.3571 0.24461 2006 5 29 53884 0.1100 0.3563 0.24499 2006 5 30 53885 0.1104 0.3556 0.24541 2006 5 31 53886 0.1109 0.3548 0.24577 2006 6 1 53887 0.1113 0.3540 0.24602 2006 6 2 53888 0.1117 0.3532 0.24612 2006 6 3 53889 0.1122 0.3524 0.24606 2006 6 4 53890 0.1126 0.3516 0.24588 2006 6 5 53891 0.1130 0.3508 0.24562 2006 6 6 53892 0.1134 0.3499 0.24534 2006 6 7 53893 0.1138 0.3491 0.24511 2006 6 8 53894 0.1142 0.3482 0.24498 2006 6 9 53895 0.1146 0.3473 0.24502 2006 6 10 53896 0.1149 0.3464 0.24526 2006 6 11 53897 0.1153 0.3455 0.24570 2006 6 12 53898 0.1156 0.3446 0.24629 2006 6 13 53899 0.1160 0.3437 0.24694 2006 6 14 53900 0.1163 0.3427 0.24752 2006 6 15 53901 0.1166 0.3418 0.24791 2006 6 16 53902 0.1169 0.3408 0.24804 2006 6 17 53903 0.1172 0.3398 0.24791 2006 6 18 53904 0.1175 0.3389 0.24757 2006 6 19 53905 0.1177 0.3379 0.24716 2006 6 20 53906 0.1180 0.3368 0.24681 2006 6 21 53907 0.1182 0.3358 0.24665 2006 6 22 53908 0.1185 0.3348 0.24676 2006 6 23 53909 0.1187 0.3337 0.24717 2006 6 24 53910 0.1189 0.3327 0.24784 2006 6 25 53911 0.1191 0.3316 0.24869 2006 6 26 53912 0.1192 0.3306 0.24960 2006 6 27 53913 0.1194 0.3295 0.25048 2006 6 28 53914 0.1195 0.3284 0.25126 2006 6 29 53915 0.1197 0.3273 0.25188 2006 6 30 53916 0.1198 0.3262 0.25233 2006 7 1 53917 0.1199 0.3251 0.25265 2006 7 2 53918 0.1200 0.3239 0.25287 2006 7 3 53919 0.1200 0.3228 0.25304 2006 7 4 53920 0.1201 0.3217 0.25324 2006 7 5 53921 0.1201 0.3205 0.25351 2006 7 6 53922 0.1201 0.3194 0.25392 2006 7 7 53923 0.1201 0.3182 0.25451 2006 7 8 53924 0.1201 0.3171 0.25528 2006 7 9 53925 0.1201 0.3159 0.25621 2006 7 10 53926 0.1200 0.3147 0.25722 2006 7 11 53927 0.1199 0.3135 0.25818 2006 7 12 53928 0.1199 0.3123 0.25896 2006 7 13 53929 0.1197 0.3112 0.25947 2006 7 14 53930 0.1196 0.3100 0.25967 2006 7 15 53931 0.1195 0.3088 0.25961 2006 7 16 53932 0.1193 0.3076 0.25944 2006 7 17 53933 0.1191 0.3064 0.25930 2006 7 18 53934 0.1189 0.3052 0.25934 2006 7 19 53935 0.1187 0.3039 0.25964 2006 7 20 53936 0.1184 0.3027 0.26025 2006 7 21 53937 0.1181 0.3015 0.26112 2006 7 22 53938 0.1178 0.3003 0.26216 2006 7 23 53939 0.1175 0.2991 0.26330 2006 7 24 53940 0.1172 0.2979 0.26441 2006 7 25 53941 0.1168 0.2967 0.26542 2006 7 26 53942 0.1164 0.2955 0.26629 2006 7 27 53943 0.1160 0.2943 0.26698 2006 7 28 53944 0.1156 0.2931 0.26751 2006 7 29 53945 0.1151 0.2919 0.26792 2006 7 30 53946 0.1147 0.2907 0.26826 2006 7 31 53947 0.1142 0.2895 0.26858 2006 8 1 53948 0.1136 0.2883 0.26893 2006 8 2 53949 0.1131 0.2871 0.26937 2006 8 3 53950 0.1125 0.2859 0.26991 2006 8 4 53951 0.1119 0.2847 0.27058 2006 8 5 53952 0.1112 0.2836 0.27135 2006 8 6 53953 0.1106 0.2824 0.27217 2006 8 7 53954 0.1099 0.2812 0.27294 2006 8 8 53955 0.1091 0.2801 0.27353 2006 8 9 53956 0.1084 0.2789 0.27381 2006 8 10 53957 0.1076 0.2778 0.27372 2006 8 11 53958 0.1068 0.2767 0.27330 2006 8 12 53959 0.1060 0.2756 0.27267 2006 8 13 53960 0.1051 0.2745 0.27203 2006 8 14 53961 0.1042 0.2734 0.27156 2006 8 15 53962 0.1033 0.2723 0.27140 2006 8 16 53963 0.1024 0.2712 0.27160 2006 8 17 53964 0.1014 0.2702 0.27212 2006 8 18 53965 0.1005 0.2691 0.27287 2006 8 19 53966 0.0994 0.2681 0.27373 2006 8 20 53967 0.0984 0.2671 0.27458 2006 8 21 53968 0.0973 0.2661 0.27533 2006 8 22 53969 0.0963 0.2651 0.27590 2006 8 23 53970 0.0951 0.2641 0.27629 2006 8 24 53971 0.0940 0.2631 0.27649 2006 8 25 53972 0.0928 0.2622 0.27654 2006 8 26 53973 0.0916 0.2613 0.27651 2006 8 27 53974 0.0904 0.2604 0.27647 2006 8 28 53975 0.0892 0.2595 0.27648 2006 8 29 53976 0.0879 0.2586 0.27662 2006 8 30 53977 0.0866 0.2577 0.27693 2006 8 31 53978 0.0853 0.2569 0.27740 2006 9 1 53979 0.0839 0.2561 0.27799 2006 9 2 53980 0.0825 0.2553 0.27864 2006 9 3 53981 0.0811 0.2545 0.27928 2006 9 4 53982 0.0797 0.2538 0.27981 2006 9 5 53983 0.0783 0.2530 0.28012 2006 9 6 53984 0.0768 0.2523 0.28004 2006 9 7 53985 0.0753 0.2516 0.27953 2006 9 8 53986 0.0738 0.2510 0.27864 2006 9 9 53987 0.0722 0.2503 0.27760 2006 9 10 53988 0.0706 0.2497 0.27661 2006 9 11 53989 0.0690 0.2491 0.27587 2006 9 12 53990 0.0674 0.2486 0.27547 2006 9 13 53991 0.0658 0.2480 0.27539 2006 9 14 53992 0.0641 0.2475 0.27555 2006 9 15 53993 0.0624 0.2470 0.27583 2006 9 16 53994 0.0607 0.2466 0.27610 2006 9 17 53995 0.0590 0.2461 0.27630 2006 9 18 53996 0.0572 0.2457 0.27640 2006 9 19 53997 0.0554 0.2453 0.27637 2006 9 20 53998 0.0537 0.2450 0.27618 2006 9 21 53999 0.0518 0.2446 0.27582 2006 9 22 54000 0.0500 0.2443 0.27530 2006 9 23 54001 0.0482 0.2441 0.27471 2006 9 24 54002 0.0463 0.2438 0.27416 2006 9 25 54003 0.0444 0.2436 0.27372 2006 9 26 54004 0.0425 0.2434 0.27337 2006 9 27 54005 0.0406 0.2433 0.27317 2006 9 28 54006 0.0386 0.2432 0.27314 2006 9 29 54007 0.0367 0.2431 0.27324 2006 9 30 54008 0.0347 0.2430 0.27346 2006 10 1 54009 0.0327 0.2430 0.27359 2006 10 2 54010 0.0307 0.2430 0.27352 2006 10 3 54011 0.0287 0.2430 0.27321 2006 10 4 54012 0.0267 0.2431 0.27262 2006 10 5 54013 0.0246 0.2432 0.27171 2006 10 6 54014 0.0226 0.2433 0.27059 2006 10 7 54015 0.0205 0.2435 0.26942 2006 10 8 54016 0.0184 0.2437 0.26840 2006 10 9 54017 0.0163 0.2439 0.26764 2006 10 10 54018 0.0142 0.2442 0.26714 2006 10 11 54019 0.0121 0.2445 0.26686 2006 10 12 54020 0.0100 0.2448 0.26670 2006 10 13 54021 0.0079 0.2452 0.26657 2006 10 14 54022 0.0058 0.2456 0.26640 2006 10 15 54023 0.0036 0.2460 0.26605 2006 10 16 54024 0.0015 0.2465 0.26552 2006 10 17 54025 -0.0007 0.2470 0.26481 2006 10 18 54026 -0.0028 0.2475 0.26387 2006 10 19 54027 -0.0050 0.2480 0.26281 2006 10 20 54028 -0.0071 0.2486 0.26171 2006 10 21 54029 -0.0093 0.2493 0.26064 2006 10 22 54030 -0.0114 0.2499 0.25961 2006 10 23 54031 -0.0136 0.2506 0.25872 2006 10 24 54032 -0.0157 0.2514 0.25800 2006 10 25 54033 -0.0179 0.2521 0.25747 2006 10 26 54034 -0.0200 0.2529 0.25710 2006 10 27 54035 -0.0222 0.2538 0.25683 2006 10 28 54036 -0.0243 0.2546 0.25663 2006 10 29 54037 -0.0265 0.2555 0.25634 2006 10 30 54038 -0.0286 0.2565 0.25581 2006 10 31 54039 -0.0307 0.2574 0.25498 2006 11 1 54040 -0.0329 0.2585 0.25384 2006 11 2 54041 -0.0350 0.2595 0.25244 2006 11 3 54042 -0.0371 0.2606 0.25092 2006 11 4 54043 -0.0392 0.2617 0.24942 2006 11 5 54044 -0.0413 0.2628 0.24816 2006 11 6 54045 -0.0434 0.2640 0.24717 2006 11 7 54046 -0.0454 0.2652 0.24646 2006 11 8 54047 -0.0475 0.2664 0.24598 2006 11 9 54048 -0.0495 0.2676 0.24567 2006 11 10 54049 -0.0515 0.2689 0.24541 2006 11 11 54050 -0.0536 0.2703 0.24511 2006 11 12 54051 -0.0555 0.2716 0.24466 2006 11 13 54052 -0.0575 0.2730 0.24407 2006 11 14 54053 -0.0595 0.2744 0.24333 2006 11 15 54054 -0.0614 0.2759 0.24247 2006 11 16 54055 -0.0634 0.2774 0.24157 2006 11 17 54056 -0.0653 0.2789 0.24071 2006 11 18 54057 -0.0671 0.2804 0.23998 2006 11 19 54058 -0.0690 0.2820 0.23945 2006 11 20 54059 -0.0708 0.2836 0.23917 2006 11 21 54060 -0.0727 0.2852 0.23920 2006 11 22 54061 -0.0745 0.2868 0.23942 2006 11 23 54062 -0.0762 0.2885 0.23977 2006 11 24 54063 -0.0780 0.2902 0.24009 2006 11 25 54064 -0.0797 0.2920 0.24030 2006 11 26 54065 -0.0814 0.2937 0.24040 2006 11 27 54066 -0.0830 0.2955 0.24030 2006 11 28 54067 -0.0847 0.2973 0.23991 2006 11 29 54068 -0.0863 0.2992 0.23922 2006 11 30 54069 -0.0879 0.3010 0.23842 2006 12 1 54070 -0.0894 0.3029 0.23765 2006 12 2 54071 -0.0909 0.3049 0.23710 2006 12 3 54072 -0.0924 0.3068 0.23676 2006 12 4 54073 -0.0939 0.3088 0.23671 2006 12 5 54074 -0.0953 0.3107 0.23686 2006 12 6 54075 -0.0967 0.3127 0.23716 2006 12 7 54076 -0.0980 0.3148 0.23750 2006 12 8 54077 -0.0994 0.3168 0.23775 2006 12 9 54078 -0.1006 0.3189 0.23785 2006 12 10 54079 -0.1019 0.3210 0.23780 2006 12 11 54080 -0.1031 0.3231 0.23763 2006 12 12 54081 -0.1043 0.3252 0.23740 2006 12 13 54082 -0.1054 0.3274 0.23716 2006 12 14 54083 -0.1065 0.3296 0.23690 2006 12 15 54084 -0.1076 0.3317 0.23666 2006 12 16 54085 -0.1086 0.3339 0.23654 2006 12 17 54086 -0.1096 0.3362 0.23660 2006 12 18 54087 -0.1105 0.3384 0.23683 2006 12 19 54088 -0.1114 0.3407 0.23716 2006 12 20 54089 -0.1123 0.3429 0.23753 2006 12 21 54090 -0.1131 0.3452 0.23786 2006 12 22 54091 -0.1139 0.3475 0.23810 2006 12 23 54092 -0.1146 0.3498 0.23816 2006 12 24 54093 -0.1153 0.3521 0.23801 2006 12 25 54094 -0.1160 0.3545 0.23753 2006 12 26 54095 -0.1166 0.3568 0.23665 2006 12 27 54096 -0.1171 0.3592 0.23547 2006 12 28 54097 -0.1177 0.3615 0.23417 2006 12 29 54098 -0.1181 0.3639 0.23287 2006 12 30 54099 -0.1186 0.3663 0.23174 2006 12 31 54100 -0.1190 0.3687 0.23092 2007 1 1 54101 -0.1193 0.3711 0.23039 2007 1 2 54102 -0.1196 0.3735 0.23005 2007 1 3 54103 -0.1199 0.3759 0.22981 2007 1 4 54104 -0.1201 0.3784 0.22955 2007 1 5 54105 -0.1202 0.3808 0.22913 2007 1 6 54106 -0.1203 0.3832 0.22857 2007 1 7 54107 -0.1204 0.3857 0.22787 2007 1 8 54108 -0.1204 0.3881 0.22704 2007 1 9 54109 -0.1204 0.3906 0.22612 2007 1 10 54110 -0.1203 0.3930 0.22515 2007 1 11 54111 -0.1202 0.3955 0.22426 2007 1 12 54112 -0.1200 0.3979 0.22351 2007 1 13 54113 -0.1198 0.4004 0.22300 2007 1 14 54114 -0.1196 0.4028 0.22276 2007 1 15 54115 -0.1193 0.4053 0.22269 2007 1 16 54116 -0.1189 0.4077 0.22271 2007 1 17 54117 -0.1185 0.4102 0.22275 2007 1 18 54118 -0.1181 0.4127 0.22274 2007 1 19 54119 -0.1176 0.4151 0.22257 2007 1 20 54120 -0.1170 0.4175 0.22218 2007 1 21 54121 -0.1165 0.4200 0.22156 2007 1 22 54122 -0.1158 0.4224 0.22070 2007 1 23 54123 -0.1151 0.4248 0.21970 2007 1 24 54124 -0.1144 0.4273 0.21865 2007 1 25 54125 -0.1137 0.4297 0.21766 2007 1 26 54126 -0.1128 0.4321 0.21700 These predictions are based on all announced leap seconds. CELESTIAL POLE OFFSET SERIES: NEOS Celestial Pole Offset Series MJD dpsi error deps error (msec. of arc) 53741 -56.80 .23 -1.70 .34 53742 -57.00 .23 -1.66 .34 53743 -57.22 .19 -1.56 .34 53744 -57.40 .22 -1.50 .34 53745 -57.41 .22 -1.50 .34 53746 -57.17 .28 -1.59 .34 53747 -56.77 .28 -1.79 .34 53748 -56.39 .28 -2.05 .34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 53741 0.145 0.091 -0.340 0.340 53742 0.134 0.091 -0.356 0.340 53743 0.118 0.076 -0.344 0.340 53744 0.102 0.088 -0.338 0.340 53745 0.095 0.088 -0.341 0.340 53746 0.101 0.111 -0.358 0.340 53747 0.109 0.111 -0.376 0.340 53748 0.123 0.111 -0.396 0.340 The IERS Conventions recommended software to predict celestial pole offsets is available at ftp://maia.usno.navy.mil/conventions/chapter5/ ceppred.f and software for the calculation of the dX and dY with respect to IAU2000A Nutation/Precession Theory can be found at the web site in section chapter 5. ************************************************************************** Important Notices - Important Notices - Important Notices ************************************************************************** A positive leap second was introduced in UTC on 31 December 2005. The sequence of dates of the UTC second markers will be: 2005 December 31, 23h 59m 59s 2005 December 31, 23h 59m 60s 2006 January 1, 0h 0m 0s The difference between UTC and the International Atomic Time (TAI) is: from 1999 January 1, 0h UTC, to 2006 January 1 0h UTC : UTC-TAI = - 32s from 2006 January 1, 0h UTC, until further notice : UTC-TAI = - 33s ************************************************************************** Important Notice - IAU 2000 Resolution Compliancy Information ************************************************************************** Resolutions passed at the 24th General Assembly of the International Astronomical Union (IAU) recommend the implementation of a number of new procedures concerning the transformation between the celestial and terrestrial reference systems. Information regarding these procedures is available in Chapter 5 of the IERS Conventions 2003 available at . With these resolutions, beginning on 1 January 2003, IERS Bulletins A and B will publish new products in addition to those already published. These products will include the celestial pole offsets X_obs-X_IAU2000A and Y_obs-Y_IAU2000A where X_obs and Y_obs are the observed X, Y coordinates of the Celestial Intermediate Pole in the Geocentric Celestial Reference System, and X_IAU2000A and Y_IAU2000A are the celestial pole coordinates provided by using the IAU2000A Precession-Nutation theory. It is expected that Celestial Pole offsets related to the IAU1980 Nutation Theory will continue to be published through 15 January 2006. The new celestial pole offsets related to the new IAU2000A Precession-Nutation theory will be produced in a separate data file as well as appended to to this file. ************************************************************************** Important Notice - IAU 2000 Resolution Compliancy Information **************************************************************************