********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 22 December 2005 Vol. XVIII No. 051 ______________________________________________________________________ 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 = -0.6 seconds beginning 17 March 2005 at 0000 UTC Beginning 1 January 1999: TAI-UTC(BIPM) = 32.000 000 seconds ********************************************************************** * >>> A positive leap second will be 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 5 12 16 53720 .06473 .00007 .38796 .00006 -.654023 .000009 5 12 17 53721 .06505 .00005 .38859 .00005 -.654052 .000012 5 12 18 53722 .06514 .00005 .38903 .00005 -.654129 .000012 5 12 19 53723 .06483 .00004 .38918 .00004 -.654339 .000013 5 12 20 53724 .06389 .00003 .38904 .00004 -.654698 .000013 5 12 21 53725 .06292 .00003 .38843 .00003 -.655240 .000014 5 12 22 53726 .06224 .00003 .38759 .00003 -.656026 .000015 _______________________________________________________________________ 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 = .0410 - .0353 cos A - .1325 sin A + .0681 cos C + .1525 sin C y = .3540 - .1289 cos A + .0346 sin A + .1525 cos C - .0681 sin C UT1-UTC = -.6636 - .00043 (MJD - 53731) - (UT2-UT1) where A = 2*pi*(MJD-53726)/365.25 and C = 2*pi*(MJD-53726)/435. TAI-UTC(MJD 53727) = 32.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-53726)**0.80 S t = 0.00025 (MJD-53726)**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) 2005 12 23 53727 0.0616 0.3868 -0.65701 2005 12 24 53728 0.0611 0.3861 -0.65805 2005 12 25 53729 0.0607 0.3854 -0.65907 2005 12 26 53730 0.0604 0.3849 -0.66001 2005 12 27 53731 0.0601 0.3844 -0.66080 2005 12 28 53732 0.0600 0.3839 -0.66141 2005 12 29 53733 0.0599 0.3835 -0.66185 2005 12 30 53734 0.0598 0.3831 -0.66214 2005 12 31 53735 0.0599 0.3827 -0.66232 2006 1 1 53736 0.0599 0.3823 0.33745 2006 1 2 53737 0.0600 0.3820 0.33704 2006 1 3 53738 0.0602 0.3817 0.33637 2006 1 4 53739 0.0603 0.3814 0.33546 2006 1 5 53740 0.0606 0.3811 0.33440 2006 1 6 53741 0.0608 0.3808 0.33332 2006 1 7 53742 0.0610 0.3805 0.33238 2006 1 8 53743 0.0613 0.3803 0.33165 2006 1 9 53744 0.0616 0.3800 0.33119 2006 1 10 53745 0.0619 0.3797 0.33099 2006 1 11 53746 0.0622 0.3795 0.33100 2006 1 12 53747 0.0626 0.3792 0.33115 2006 1 13 53748 0.0629 0.3790 0.33135 2006 1 14 53749 0.0633 0.3787 0.33150 2006 1 15 53750 0.0636 0.3784 0.33154 2006 1 16 53751 0.0640 0.3782 0.33142 2006 1 17 53752 0.0644 0.3779 0.33112 2006 1 18 53753 0.0647 0.3776 0.33064 2006 1 19 53754 0.0651 0.3774 0.33002 2006 1 20 53755 0.0655 0.3771 0.32930 2006 1 21 53756 0.0658 0.3768 0.32857 2006 1 22 53757 0.0662 0.3766 0.32788 2006 1 23 53758 0.0666 0.3763 0.32730 2006 1 24 53759 0.0670 0.3760 0.32688 2006 1 25 53760 0.0674 0.3757 0.32664 2006 1 26 53761 0.0677 0.3754 0.32657 2006 1 27 53762 0.0681 0.3752 0.32660 2006 1 28 53763 0.0685 0.3749 0.32660 2006 1 29 53764 0.0688 0.3746 0.32641 2006 1 30 53765 0.0692 0.3743 0.32593 2006 1 31 53766 0.0695 0.3740 0.32511 2006 2 1 53767 0.0699 0.3738 0.32402 2006 2 2 53768 0.0703 0.3735 0.32281 2006 2 3 53769 0.0706 0.3732 0.32166 2006 2 4 53770 0.0709 0.3729 0.32071 2006 2 5 53771 0.0713 0.3726 0.32004 2006 2 6 53772 0.0716 0.3723 0.31967 2006 2 7 53773 0.0719 0.3720 0.31954 2006 2 8 53774 0.0723 0.3718 0.31959 2006 2 9 53775 0.0726 0.3715 0.31971 2006 2 10 53776 0.0729 0.3712 0.31982 2006 2 11 53777 0.0732 0.3709 0.31983 2006 2 12 53778 0.0735 0.3706 0.31969 2006 2 13 53779 0.0738 0.3703 0.31936 2006 2 14 53780 0.0741 0.3700 0.31884 2006 2 15 53781 0.0744 0.3698 0.31816 2006 2 16 53782 0.0747 0.3695 0.31735 2006 2 17 53783 0.0750 0.3692 0.31650 2006 2 18 53784 0.0753 0.3689 0.31567 2006 2 19 53785 0.0756 0.3686 0.31491 2006 2 20 53786 0.0758 0.3683 0.31430 2006 2 21 53787 0.0761 0.3681 0.31385 2006 2 22 53788 0.0763 0.3678 0.31356 2006 2 23 53789 0.0766 0.3676 0.31339 2006 2 24 53790 0.0769 0.3673 0.31325 2006 2 25 53791 0.0771 0.3670 0.31298 2006 2 26 53792 0.0773 0.3667 0.31246 2006 2 27 53793 0.0776 0.3664 0.31158 2006 2 28 53794 0.0778 0.3662 0.31035 2006 3 1 53795 0.0780 0.3659 0.30889 2006 3 2 53796 0.0783 0.3656 0.30736 2006 3 3 53797 0.0785 0.3653 0.30597 2006 3 4 53798 0.0787 0.3651 0.30484 2006 3 5 53799 0.0789 0.3648 0.30402 2006 3 6 53800 0.0791 0.3645 0.30348 2006 3 7 53801 0.0793 0.3642 0.30315 2006 3 8 53802 0.0795 0.3640 0.30290 2006 3 9 53803 0.0797 0.3637 0.30266 2006 3 10 53804 0.0799 0.3634 0.30234 2006 3 11 53805 0.0801 0.3632 0.30187 2006 3 12 53806 0.0803 0.3629 0.30122 2006 3 13 53807 0.0805 0.3627 0.30038 2006 3 14 53808 0.0806 0.3624 0.29937 2006 3 15 53809 0.0808 0.3621 0.29824 2006 3 16 53810 0.0810 0.3619 0.29704 2006 3 17 53811 0.0812 0.3616 0.29586 2006 3 18 53812 0.0813 0.3614 0.29477 2006 3 19 53813 0.0815 0.3611 0.29381 2006 3 20 53814 0.0817 0.3608 0.29304 2006 3 21 53815 0.0820 0.3606 0.29244 2006 3 22 53816 0.0821 0.3603 0.29199 2006 3 23 53817 0.0823 0.3601 0.29159 2006 3 24 53818 0.0824 0.3598 0.29113 2006 3 25 53819 0.0825 0.3596 0.29048 2006 3 26 53820 0.0827 0.3593 0.28952 2006 3 27 53821 0.0828 0.3590 0.28821 2006 3 28 53822 0.0830 0.3588 0.28661 2006 3 29 53823 0.0831 0.3585 0.28486 2006 3 30 53824 0.0832 0.3583 0.28315 2006 3 31 53825 0.0834 0.3580 0.28164 2006 4 1 53826 0.0835 0.3578 0.28045 2006 4 2 53827 0.0836 0.3575 0.27960 2006 4 3 53828 0.0838 0.3572 0.27901 2006 4 4 53829 0.0839 0.3570 0.27859 2006 4 5 53830 0.0841 0.3567 0.27823 2006 4 6 53831 0.0842 0.3565 0.27782 2006 4 7 53832 0.0843 0.3562 0.27733 2006 4 8 53833 0.0845 0.3559 0.27668 2006 4 9 53834 0.0846 0.3557 0.27587 2006 4 10 53835 0.0847 0.3554 0.27490 2006 4 11 53836 0.0849 0.3551 0.27381 2006 4 12 53837 0.0850 0.3548 0.27265 2006 4 13 53838 0.0852 0.3546 0.27150 2006 4 14 53839 0.0853 0.3543 0.27043 2006 4 15 53840 0.0854 0.3540 0.26950 2006 4 16 53841 0.0856 0.3537 0.26876 2006 4 17 53842 0.0857 0.3534 0.26821 2006 4 18 53843 0.0859 0.3532 0.26784 2006 4 19 53844 0.0860 0.3529 0.26756 2006 4 20 53845 0.0862 0.3526 0.26728 2006 4 21 53846 0.0863 0.3523 0.26686 2006 4 22 53847 0.0865 0.3520 0.26620 2006 4 23 53848 0.0866 0.3517 0.26524 2006 4 24 53849 0.0868 0.3514 0.26398 2006 4 25 53850 0.0869 0.3511 0.26253 2006 4 26 53851 0.0871 0.3507 0.26103 2006 4 27 53852 0.0873 0.3504 0.25967 2006 4 28 53853 0.0874 0.3501 0.25858 2006 4 29 53854 0.0876 0.3498 0.25782 2006 4 30 53855 0.0878 0.3494 0.25738 2006 5 1 53856 0.0880 0.3491 0.25716 2006 5 2 53857 0.0881 0.3487 0.25705 2006 5 3 53858 0.0883 0.3484 0.25694 2006 5 4 53859 0.0885 0.3480 0.25675 2006 5 5 53860 0.0887 0.3477 0.25642 2006 5 6 53861 0.0889 0.3473 0.25594 2006 5 7 53862 0.0891 0.3469 0.25531 2006 5 8 53863 0.0893 0.3466 0.25456 2006 5 9 53864 0.0895 0.3462 0.25374 2006 5 10 53865 0.0897 0.3458 0.25291 2006 5 11 53866 0.0899 0.3454 0.25214 2006 5 12 53867 0.0901 0.3450 0.25151 2006 5 13 53868 0.0903 0.3446 0.25106 2006 5 14 53869 0.0905 0.3441 0.25082 2006 5 15 53870 0.0907 0.3437 0.25078 2006 5 16 53871 0.0909 0.3433 0.25086 2006 5 17 53872 0.0911 0.3428 0.25097 2006 5 18 53873 0.0913 0.3424 0.25099 2006 5 19 53874 0.0916 0.3419 0.25081 2006 5 20 53875 0.0918 0.3415 0.25036 2006 5 21 53876 0.0920 0.3410 0.24965 2006 5 22 53877 0.0922 0.3405 0.24874 2006 5 23 53878 0.0924 0.3400 0.24776 2006 5 24 53879 0.0927 0.3395 0.24687 2006 5 25 53880 0.0929 0.3390 0.24619 2006 5 26 53881 0.0931 0.3385 0.24582 2006 5 27 53882 0.0933 0.3380 0.24576 2006 5 28 53883 0.0936 0.3374 0.24596 2006 5 29 53884 0.0938 0.3369 0.24631 2006 5 30 53885 0.0940 0.3364 0.24671 2006 5 31 53886 0.0942 0.3358 0.24705 2006 6 1 53887 0.0945 0.3352 0.24728 2006 6 2 53888 0.0947 0.3346 0.24736 2006 6 3 53889 0.0949 0.3341 0.24729 2006 6 4 53890 0.0951 0.3335 0.24710 2006 6 5 53891 0.0954 0.3329 0.24683 2006 6 6 53892 0.0956 0.3322 0.24654 2006 6 7 53893 0.0958 0.3316 0.24629 2006 6 8 53894 0.0960 0.3310 0.24616 2006 6 9 53895 0.0962 0.3304 0.24620 2006 6 10 53896 0.0964 0.3297 0.24644 2006 6 11 53897 0.0966 0.3290 0.24689 2006 6 12 53898 0.0968 0.3284 0.24748 2006 6 13 53899 0.0970 0.3277 0.24813 2006 6 14 53900 0.0972 0.3270 0.24871 2006 6 15 53901 0.0974 0.3263 0.24911 2006 6 16 53902 0.0975 0.3256 0.24925 2006 6 17 53903 0.0977 0.3249 0.24912 2006 6 18 53904 0.0979 0.3242 0.24878 2006 6 19 53905 0.0980 0.3234 0.24836 2006 6 20 53906 0.0982 0.3227 0.24800 2006 6 21 53907 0.0983 0.3220 0.24782 2006 6 22 53908 0.0984 0.3212 0.24790 2006 6 23 53909 0.0986 0.3204 0.24827 2006 6 24 53910 0.0987 0.3197 0.24888 2006 6 25 53911 0.0988 0.3189 0.24966 2006 6 26 53912 0.0989 0.3181 0.25048 2006 6 27 53913 0.0990 0.3173 0.25127 2006 6 28 53914 0.0990 0.3165 0.25194 2006 6 29 53915 0.0991 0.3157 0.25245 2006 6 30 53916 0.0992 0.3149 0.25281 2006 7 1 53917 0.0992 0.3141 0.25304 2006 7 2 53918 0.0992 0.3133 0.25319 2006 7 3 53919 0.0991 0.3125 0.25332 2006 7 4 53920 0.0991 0.3117 0.25349 2006 7 5 53921 0.0990 0.3109 0.25376 2006 7 6 53922 0.0990 0.3100 0.25417 2006 7 7 53923 0.0989 0.3092 0.25475 2006 7 8 53924 0.0988 0.3084 0.25550 2006 7 9 53925 0.0987 0.3075 0.25639 2006 7 10 53926 0.0986 0.3067 0.25735 2006 7 11 53927 0.0984 0.3059 0.25826 2006 7 12 53928 0.0983 0.3050 0.25899 2006 7 13 53929 0.0981 0.3042 0.25945 2006 7 14 53930 0.0979 0.3033 0.25962 2006 7 15 53931 0.0977 0.3024 0.25955 2006 7 16 53932 0.0974 0.3016 0.25937 2006 7 17 53933 0.0972 0.3007 0.25922 2006 7 18 53934 0.0969 0.2999 0.25926 2006 7 19 53935 0.0966 0.2990 0.25956 2006 7 20 53936 0.0963 0.2981 0.26015 2006 7 21 53937 0.0960 0.2973 0.26101 2006 7 22 53938 0.0957 0.2964 0.26205 2006 7 23 53939 0.0953 0.2955 0.26318 2006 7 24 53940 0.0949 0.2946 0.26429 2006 7 25 53941 0.0945 0.2938 0.26530 2006 7 26 53942 0.0941 0.2929 0.26620 2006 7 27 53943 0.0936 0.2920 0.26695 2006 7 28 53944 0.0931 0.2912 0.26756 2006 7 29 53945 0.0926 0.2903 0.26806 2006 7 30 53946 0.0921 0.2895 0.26850 2006 7 31 53947 0.0916 0.2886 0.26890 2006 8 1 53948 0.0910 0.2878 0.26928 2006 8 2 53949 0.0904 0.2869 0.26968 2006 8 3 53950 0.0898 0.2861 0.27016 2006 8 4 53951 0.0892 0.2852 0.27076 2006 8 5 53952 0.0885 0.2844 0.27154 2006 8 6 53953 0.0878 0.2836 0.27234 2006 8 7 53954 0.0871 0.2828 0.27314 2006 8 8 53955 0.0864 0.2820 0.27377 2006 8 9 53956 0.0856 0.2812 0.27407 2006 8 10 53957 0.0848 0.2804 0.27402 2006 8 11 53958 0.0840 0.2796 0.27365 2006 8 12 53959 0.0832 0.2788 0.27309 2006 8 13 53960 0.0823 0.2780 0.27244 2006 8 14 53961 0.0815 0.2773 0.27194 2006 8 15 53962 0.0805 0.2765 0.27171 2006 8 16 53963 0.0796 0.2758 0.27180 2006 8 17 53964 0.0787 0.2751 0.27219 2006 8 18 53965 0.0777 0.2744 0.27280 2006 8 19 53966 0.0767 0.2737 0.27356 2006 8 20 53967 0.0756 0.2730 0.27432 2006 8 21 53968 0.0746 0.2723 0.27495 2006 8 22 53969 0.0735 0.2717 0.27542 2006 8 23 53970 0.0724 0.2710 0.27571 2006 8 24 53971 0.0712 0.2704 0.27581 2006 8 25 53972 0.0701 0.2698 0.27576 2006 8 26 53973 0.0689 0.2692 0.27558 2006 8 27 53974 0.0677 0.2686 0.27541 2006 8 28 53975 0.0665 0.2680 0.27521 2006 8 29 53976 0.0652 0.2675 0.27505 2006 8 30 53977 0.0640 0.2669 0.27500 2006 8 31 53978 0.0627 0.2664 0.27514 2006 9 1 53979 0.0613 0.2659 0.27548 2006 9 2 53980 0.0600 0.2654 0.27598 2006 9 3 53981 0.0586 0.2650 0.27650 2006 9 4 53982 0.0572 0.2646 0.27694 2006 9 5 53983 0.0558 0.2641 0.27715 2006 9 6 53984 0.0544 0.2637 0.27702 2006 9 7 53985 0.0530 0.2634 0.27654 2006 9 8 53986 0.0515 0.2630 0.27578 2006 9 9 53987 0.0500 0.2627 0.27493 2006 9 10 53988 0.0485 0.2624 0.27420 2006 9 11 53989 0.0470 0.2621 0.27378 2006 9 12 53990 0.0454 0.2618 0.27380 2006 9 13 53991 0.0438 0.2616 0.27417 2006 9 14 53992 0.0423 0.2614 0.27481 2006 9 15 53993 0.0407 0.2612 0.27550 2006 9 16 53994 0.0390 0.2610 0.27618 2006 9 17 53995 0.0374 0.2608 0.27684 2006 9 18 53996 0.0358 0.2607 0.27739 2006 9 19 53997 0.0341 0.2606 0.27775 2006 9 20 53998 0.0324 0.2606 0.27786 2006 9 21 53999 0.0307 0.2605 0.27784 2006 9 22 54000 0.0290 0.2605 0.27774 2006 9 23 54001 0.0273 0.2605 0.27764 2006 9 24 54002 0.0256 0.2605 0.27753 2006 9 25 54003 0.0238 0.2606 0.27745 2006 9 26 54004 0.0221 0.2607 0.27745 2006 9 27 54005 0.0203 0.2608 0.27757 2006 9 28 54006 0.0185 0.2610 0.27783 2006 9 29 54007 0.0167 0.2611 0.27820 2006 9 30 54008 0.0150 0.2613 0.27859 2006 10 1 54009 0.0132 0.2616 0.27896 2006 10 2 54010 0.0113 0.2618 0.27919 2006 10 3 54011 0.0095 0.2621 0.27921 2006 10 4 54012 0.0077 0.2624 0.27892 2006 10 5 54013 0.0059 0.2628 0.27828 2006 10 6 54014 0.0041 0.2631 0.27737 2006 10 7 54015 0.0023 0.2635 0.27640 2006 10 8 54016 0.0004 0.2640 0.27559 2006 10 9 54017 -0.0014 0.2644 0.27505 2006 10 10 54018 -0.0032 0.2649 0.27480 2006 10 11 54019 -0.0051 0.2654 0.27475 2006 10 12 54020 -0.0069 0.2660 0.27482 2006 10 13 54021 -0.0087 0.2665 0.27491 2006 10 14 54022 -0.0105 0.2671 0.27494 2006 10 15 54023 -0.0124 0.2678 0.27487 2006 10 16 54024 -0.0142 0.2684 0.27457 2006 10 17 54025 -0.0160 0.2691 0.27395 2006 10 18 54026 -0.0178 0.2698 0.27302 2006 10 19 54027 -0.0196 0.2706 0.27185 2006 10 20 54028 -0.0214 0.2714 0.27051 2006 10 21 54029 -0.0232 0.2722 0.26912 2006 10 22 54030 -0.0250 0.2730 0.26782 2006 10 23 54031 -0.0267 0.2739 0.26668 2006 10 24 54032 -0.0285 0.2747 0.26570 2006 10 25 54033 -0.0303 0.2757 0.26493 2006 10 26 54034 -0.0320 0.2766 0.26431 2006 10 27 54035 -0.0337 0.2776 0.26375 2006 10 28 54036 -0.0354 0.2786 0.26323 2006 10 29 54037 -0.0371 0.2796 0.26262 2006 10 30 54038 -0.0388 0.2807 0.26181 2006 10 31 54039 -0.0405 0.2818 0.26070 2006 11 1 54040 -0.0421 0.2829 0.25926 2006 11 2 54041 -0.0437 0.2840 0.25759 2006 11 3 54042 -0.0454 0.2852 0.25585 2006 11 4 54043 -0.0470 0.2864 0.25425 2006 11 5 54044 -0.0485 0.2876 0.25297 2006 11 6 54045 -0.0501 0.2889 0.25201 2006 11 7 54046 -0.0516 0.2901 0.25135 2006 11 8 54047 -0.0531 0.2914 0.25089 2006 11 9 54048 -0.0546 0.2927 0.25053 2006 11 10 54049 -0.0561 0.2941 0.25017 2006 11 11 54050 -0.0575 0.2955 0.24975 2006 11 12 54051 -0.0590 0.2968 0.24925 2006 11 13 54052 -0.0604 0.2983 0.24863 2006 11 14 54053 -0.0617 0.2997 0.24792 2006 11 15 54054 -0.0631 0.3012 0.24708 2006 11 16 54055 -0.0644 0.3027 0.24614 2006 11 17 54056 -0.0657 0.3042 0.24530 2006 11 18 54057 -0.0670 0.3057 0.24466 2006 11 19 54058 -0.0682 0.3072 0.24417 2006 11 20 54059 -0.0694 0.3088 0.24387 2006 11 21 54060 -0.0706 0.3104 0.24377 2006 11 22 54061 -0.0718 0.3120 0.24389 2006 11 23 54062 -0.0729 0.3137 0.24413 2006 11 24 54063 -0.0740 0.3153 0.24437 2006 11 25 54064 -0.0750 0.3170 0.24446 2006 11 26 54065 -0.0760 0.3187 0.24435 2006 11 27 54066 -0.0770 0.3204 0.24397 2006 11 28 54067 -0.0780 0.3221 0.24328 2006 11 29 54068 -0.0789 0.3238 0.24226 2006 11 30 54069 -0.0798 0.3256 0.24103 2006 12 1 54070 -0.0807 0.3274 0.23975 2006 12 2 54071 -0.0815 0.3292 0.23857 2006 12 3 54072 -0.0823 0.3310 0.23765 2006 12 4 54073 -0.0831 0.3328 0.23707 2006 12 5 54074 -0.0838 0.3346 0.23675 2006 12 6 54075 -0.0845 0.3365 0.23661 2006 12 7 54076 -0.0851 0.3383 0.23654 2006 12 8 54077 -0.0857 0.3402 0.23644 2006 12 9 54078 -0.0863 0.3421 0.23622 2006 12 10 54079 -0.0869 0.3440 0.23580 2006 12 11 54080 -0.0874 0.3459 0.23522 2006 12 12 54081 -0.0879 0.3478 0.23455 2006 12 13 54082 -0.0883 0.3497 0.23386 2006 12 14 54083 -0.0887 0.3517 0.23316 2006 12 15 54084 -0.0890 0.3536 0.23259 2006 12 16 54085 -0.0894 0.3556 0.23220 2006 12 17 54086 -0.0896 0.3575 0.23199 2006 12 18 54087 -0.0899 0.3595 0.23194 2006 12 19 54088 -0.0901 0.3615 0.23206 2006 12 20 54089 -0.0903 0.3635 0.23232 2006 12 21 54090 -0.0904 0.3654 0.23267 2006 12 22 54091 -0.0905 0.3674 0.23295 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) 53707 -58.09 .12 -2.38 .34 53708 -57.77 .11 -2.31 .34 53709 -57.45 .11 -2.16 .34 53710 -57.21 .18 -2.06 .34 53711 -57.06 .19 -2.03 .34 53712 -57.00 .19 -2.03 .34 53713 -57.03 .19 -1.98 .34 53714 -57.16 .24 -1.86 .34 53715 -57.35 .19 -1.68 .34 53716 -57.51 .19 -1.51 .34 53717 -57.53 .74 -1.44 .34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 53707 0.251 0.048 -0.202 0.340 53708 0.260 0.044 -0.174 0.340 53709 0.255 0.044 -0.152 0.340 53710 0.239 0.072 -0.161 0.340 53711 0.229 0.076 -0.171 0.340 53712 0.226 0.076 -0.182 0.340 53713 0.222 0.076 -0.187 0.340 53714 0.212 0.095 -0.191 0.340 53715 0.201 0.076 -0.180 0.340 53716 0.197 0.076 -0.171 0.340 53717 0.195 0.294 -0.180 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 ************************************************************************** No leap second was introduced in UTC on 30 June 2005. On 04 July 2005, the annoucement was made that a positive leap second will be 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 **************************************************************************