********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 22 September 2005 Vol. XVIII No. 038 ______________________________________________________________________ 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 9 16 53629 .05091 .00005 .42098 .00004 -.601174 .000023 5 9 17 53630 .05187 .00005 .42123 .00004 -.602108 .000021 5 9 18 53631 .05249 .00005 .42151 .00004 -.603316 .000021 5 9 19 53632 .05267 .00004 .42144 .00003 -.604603 .000021 5 9 20 53633 .05274 .00004 .42081 .00003 -.605800 .000019 5 9 21 53634 .05306 .00004 .41995 .00003 -.606766 .000017 5 9 22 53635 .05362 .00002 .41926 .00003 -.607409 .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 = .0458 + .0973 cos A - .0208 sin A - .0917 cos C + .0999 sin C y = .3472 - .0200 cos A - .0978 sin A + .0999 cos C + .0917 sin C UT1-UTC = -.6415 - .00042 (MJD - 53640) - (UT2-UT1) where A = 2*pi*(MJD-53635)/365.25 and C = 2*pi*(MJD-53635)/435. TAI-UTC(MJD 53636) = 32.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-53635)**0.80 S t = 0.00025 (MJD-53635)**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 9 23 53636 0.0543 0.4187 -0.60770 2005 9 24 53637 0.0550 0.4183 -0.60772 2005 9 25 53638 0.0557 0.4178 -0.60759 2005 9 26 53639 0.0565 0.4174 -0.60742 2005 9 27 53640 0.0573 0.4170 -0.60729 2005 9 28 53641 0.0582 0.4167 -0.60729 2005 9 29 53642 0.0590 0.4163 -0.60749 2005 9 30 53643 0.0598 0.4160 -0.60796 2005 10 1 53644 0.0607 0.4156 -0.60868 2005 10 2 53645 0.0615 0.4153 -0.60958 2005 10 3 53646 0.0624 0.4149 -0.61060 2005 10 4 53647 0.0632 0.4146 -0.61164 2005 10 5 53648 0.0640 0.4142 -0.61260 2005 10 6 53649 0.0648 0.4138 -0.61343 2005 10 7 53650 0.0656 0.4135 -0.61408 2005 10 8 53651 0.0664 0.4131 -0.61451 2005 10 9 53652 0.0672 0.4127 -0.61476 2005 10 10 53653 0.0680 0.4123 -0.61492 2005 10 11 53654 0.0688 0.4119 -0.61510 2005 10 12 53655 0.0695 0.4115 -0.61543 2005 10 13 53656 0.0703 0.4111 -0.61603 2005 10 14 53657 0.0710 0.4106 -0.61696 2005 10 15 53658 0.0717 0.4102 -0.61817 2005 10 16 53659 0.0725 0.4097 -0.61954 2005 10 17 53660 0.0732 0.4093 -0.62090 2005 10 18 53661 0.0739 0.4088 -0.62210 2005 10 19 53662 0.0745 0.4083 -0.62306 2005 10 20 53663 0.0752 0.4079 -0.62375 2005 10 21 53664 0.0759 0.4074 -0.62420 2005 10 22 53665 0.0765 0.4069 -0.62451 2005 10 23 53666 0.0772 0.4064 -0.62477 2005 10 24 53667 0.0778 0.4059 -0.62506 2005 10 25 53668 0.0785 0.4054 -0.62546 2005 10 26 53669 0.0791 0.4049 -0.62602 2005 10 27 53670 0.0797 0.4043 -0.62678 2005 10 28 53671 0.0803 0.4038 -0.62773 2005 10 29 53672 0.0809 0.4033 -0.62886 2005 10 30 53673 0.0815 0.4027 -0.63009 2005 10 31 53674 0.0821 0.4022 -0.63137 2005 11 1 53675 0.0827 0.4016 -0.63259 2005 11 2 53676 0.0832 0.4011 -0.63369 2005 11 3 53677 0.0838 0.4005 -0.63458 2005 11 4 53678 0.0843 0.4000 -0.63526 2005 11 5 53679 0.0849 0.3994 -0.63575 2005 11 6 53680 0.0854 0.3988 -0.63612 2005 11 7 53681 0.0860 0.3982 -0.63651 2005 11 8 53682 0.0865 0.3976 -0.63703 2005 11 9 53683 0.0870 0.3970 -0.63778 2005 11 10 53684 0.0875 0.3964 -0.63880 2005 11 11 53685 0.0880 0.3958 -0.64007 2005 11 12 53686 0.0885 0.3952 -0.64149 2005 11 13 53687 0.0890 0.3946 -0.64294 2005 11 14 53688 0.0895 0.3940 -0.64427 2005 11 15 53689 0.0900 0.3933 -0.64537 2005 11 16 53690 0.0904 0.3927 -0.64618 2005 11 17 53691 0.0909 0.3921 -0.64673 2005 11 18 53692 0.0913 0.3914 -0.64707 2005 11 19 53693 0.0918 0.3908 -0.64728 2005 11 20 53694 0.0922 0.3901 -0.64748 2005 11 21 53695 0.0926 0.3895 -0.64773 2005 11 22 53696 0.0931 0.3888 -0.64811 2005 11 23 53697 0.0935 0.3882 -0.64864 2005 11 24 53698 0.0939 0.3875 -0.64935 2005 11 25 53699 0.0943 0.3868 -0.65021 2005 11 26 53700 0.0947 0.3862 -0.65119 2005 11 27 53701 0.0951 0.3855 -0.65222 2005 11 28 53702 0.0954 0.3848 -0.65323 2005 11 29 53703 0.0958 0.3841 -0.65415 2005 11 30 53704 0.0962 0.3834 -0.65490 2005 12 1 53705 0.0965 0.3827 -0.65544 2005 12 2 53706 0.0969 0.3820 -0.65578 2005 12 3 53707 0.0972 0.3813 -0.65598 2005 12 4 53708 0.0976 0.3806 -0.65616 2005 12 5 53709 0.0979 0.3799 -0.65645 2005 12 6 53710 0.0982 0.3792 -0.65696 2005 12 7 53711 0.0985 0.3785 -0.65776 2005 12 8 53712 0.0988 0.3777 -0.65880 2005 12 9 53713 0.0991 0.3770 -0.66000 2005 12 10 53714 0.0994 0.3763 -0.66123 2005 12 11 53715 0.0997 0.3755 -0.66236 2005 12 12 53716 0.0999 0.3748 -0.66328 2005 12 13 53717 0.1002 0.3741 -0.66395 2005 12 14 53718 0.1004 0.3733 -0.66435 2005 12 15 53719 0.1007 0.3726 -0.66453 2005 12 16 53720 0.1009 0.3719 -0.66458 2005 12 17 53721 0.1011 0.3711 -0.66457 2005 12 18 53722 0.1013 0.3704 -0.66461 2005 12 19 53723 0.1015 0.3696 -0.66475 2005 12 20 53724 0.1017 0.3689 -0.66503 2005 12 21 53725 0.1019 0.3681 -0.66548 2005 12 22 53726 0.1021 0.3674 -0.66608 2005 12 23 53727 0.1022 0.3666 -0.66679 2005 12 24 53728 0.1024 0.3658 -0.66756 2005 12 25 53729 0.1025 0.3651 -0.66834 2005 12 26 53730 0.1027 0.3643 -0.66905 2005 12 27 53731 0.1028 0.3636 -0.66963 2005 12 28 53732 0.1029 0.3628 -0.67001 2005 12 29 53733 0.1030 0.3621 -0.67019 2005 12 30 53734 0.1031 0.3613 -0.67019 2005 12 31 53735 0.1032 0.3605 -0.67013 2006 1 1 53736 0.1033 0.3598 0.32986 2006 1 2 53737 0.1034 0.3590 0.32965 2006 1 3 53738 0.1034 0.3583 0.32915 2006 1 4 53739 0.1034 0.3575 0.32837 2006 1 5 53740 0.1035 0.3568 0.32740 2006 1 6 53741 0.1035 0.3560 0.32633 2006 1 7 53742 0.1035 0.3553 0.32535 2006 1 8 53743 0.1035 0.3545 0.32458 2006 1 9 53744 0.1035 0.3538 0.32407 2006 1 10 53745 0.1035 0.3530 0.32382 2006 1 11 53746 0.1035 0.3523 0.32380 2006 1 12 53747 0.1034 0.3516 0.32392 2006 1 13 53748 0.1034 0.3508 0.32409 2006 1 14 53749 0.1033 0.3501 0.32423 2006 1 15 53750 0.1032 0.3494 0.32427 2006 1 16 53751 0.1032 0.3486 0.32416 2006 1 17 53752 0.1031 0.3479 0.32387 2006 1 18 53753 0.1030 0.3472 0.32340 2006 1 19 53754 0.1028 0.3465 0.32279 2006 1 20 53755 0.1027 0.3458 0.32209 2006 1 21 53756 0.1026 0.3451 0.32136 2006 1 22 53757 0.1024 0.3444 0.32067 2006 1 23 53758 0.1023 0.3437 0.32007 2006 1 24 53759 0.1021 0.3430 0.31963 2006 1 25 53760 0.1019 0.3424 0.31937 2006 1 26 53761 0.1017 0.3417 0.31927 2006 1 27 53762 0.1016 0.3410 0.31926 2006 1 28 53763 0.1013 0.3404 0.31921 2006 1 29 53764 0.1011 0.3397 0.31898 2006 1 30 53765 0.1009 0.3391 0.31844 2006 1 31 53766 0.1007 0.3384 0.31757 2006 2 1 53767 0.1004 0.3378 0.31641 2006 2 2 53768 0.1002 0.3372 0.31512 2006 2 3 53769 0.0999 0.3366 0.31386 2006 2 4 53770 0.0996 0.3360 0.31280 2006 2 5 53771 0.0993 0.3354 0.31202 2006 2 6 53772 0.0991 0.3348 0.31153 2006 2 7 53773 0.0988 0.3342 0.31128 2006 2 8 53774 0.0984 0.3336 0.31120 2006 2 9 53775 0.0981 0.3330 0.31119 2006 2 10 53776 0.0978 0.3325 0.31116 2006 2 11 53777 0.0975 0.3319 0.31103 2006 2 12 53778 0.0971 0.3314 0.31076 2006 2 13 53779 0.0968 0.3309 0.31031 2006 2 14 53780 0.0964 0.3304 0.30967 2006 2 15 53781 0.0961 0.3299 0.30888 2006 2 16 53782 0.0957 0.3294 0.30799 2006 2 17 53783 0.0953 0.3289 0.30705 2006 2 18 53784 0.0949 0.3284 0.30614 2006 2 19 53785 0.0945 0.3279 0.30531 2006 2 20 53786 0.0941 0.3275 0.30463 2006 2 21 53787 0.0937 0.3270 0.30412 2006 2 22 53788 0.0933 0.3266 0.30377 2006 2 23 53789 0.0929 0.3262 0.30355 2006 2 24 53790 0.0925 0.3257 0.30333 2006 2 25 53791 0.0921 0.3253 0.30299 2006 2 26 53792 0.0917 0.3250 0.30238 2006 2 27 53793 0.0912 0.3246 0.30142 2006 2 28 53794 0.0908 0.3242 0.30012 2006 3 1 53795 0.0904 0.3238 0.29858 2006 3 2 53796 0.0899 0.3235 0.29698 2006 3 3 53797 0.0895 0.3232 0.29553 2006 3 4 53798 0.0890 0.3228 0.29434 2006 3 5 53799 0.0886 0.3225 0.29348 2006 3 6 53800 0.0881 0.3222 0.29291 2006 3 7 53801 0.0877 0.3219 0.29255 2006 3 8 53802 0.0872 0.3216 0.29231 2006 3 9 53803 0.0867 0.3214 0.29207 2006 3 10 53804 0.0863 0.3211 0.29176 2006 3 11 53805 0.0858 0.3209 0.29131 2006 3 12 53806 0.0854 0.3206 0.29070 2006 3 13 53807 0.0849 0.3204 0.28990 2006 3 14 53808 0.0844 0.3202 0.28894 2006 3 15 53809 0.0840 0.3200 0.28786 2006 3 16 53810 0.0835 0.3198 0.28673 2006 3 17 53811 0.0831 0.3196 0.28561 2006 3 18 53812 0.0826 0.3194 0.28458 2006 3 19 53813 0.0822 0.3192 0.28370 2006 3 20 53814 0.0817 0.3191 0.28299 2006 3 21 53815 0.0812 0.3189 0.28247 2006 3 22 53816 0.0808 0.3188 0.28210 2006 3 23 53817 0.0803 0.3187 0.28179 2006 3 24 53818 0.0799 0.3186 0.28144 2006 3 25 53819 0.0795 0.3185 0.28089 2006 3 26 53820 0.0790 0.3184 0.28006 2006 3 27 53821 0.0786 0.3183 0.27889 2006 3 28 53822 0.0782 0.3182 0.27745 2006 3 29 53823 0.0777 0.3181 0.27588 2006 3 30 53824 0.0773 0.3181 0.27439 2006 3 31 53825 0.0769 0.3180 0.27315 2006 4 1 53826 0.0765 0.3179 0.27228 2006 4 2 53827 0.0760 0.3179 0.27179 2006 4 3 53828 0.0756 0.3179 0.27163 2006 4 4 53829 0.0752 0.3178 0.27167 2006 4 5 53830 0.0747 0.3178 0.27181 2006 4 6 53831 0.0743 0.3178 0.27192 2006 4 7 53832 0.0739 0.3177 0.27193 2006 4 8 53833 0.0735 0.3177 0.27176 2006 4 9 53834 0.0731 0.3177 0.27141 2006 4 10 53835 0.0727 0.3177 0.27086 2006 4 11 53836 0.0723 0.3177 0.27016 2006 4 12 53837 0.0720 0.3178 0.26935 2006 4 13 53838 0.0716 0.3178 0.26851 2006 4 14 53839 0.0712 0.3178 0.26770 2006 4 15 53840 0.0709 0.3178 0.26698 2006 4 16 53841 0.0705 0.3179 0.26637 2006 4 17 53842 0.0702 0.3179 0.26589 2006 4 18 53843 0.0699 0.3179 0.26549 2006 4 19 53844 0.0696 0.3180 0.26509 2006 4 20 53845 0.0692 0.3180 0.26457 2006 4 21 53846 0.0689 0.3181 0.26380 2006 4 22 53847 0.0686 0.3181 0.26270 2006 4 23 53848 0.0684 0.3182 0.26125 2006 4 24 53849 0.0681 0.3182 0.25950 2006 4 25 53850 0.0678 0.3183 0.25756 2006 4 26 53851 0.0675 0.3183 0.25561 2006 4 27 53852 0.0673 0.3184 0.25379 2006 4 28 53853 0.0670 0.3184 0.25224 2006 4 29 53854 0.0668 0.3185 0.25105 2006 4 30 53855 0.0666 0.3186 0.25021 2006 5 1 53856 0.0664 0.3186 0.24961 2006 5 2 53857 0.0662 0.3187 0.24913 2006 5 3 53858 0.0660 0.3187 0.24864 2006 5 4 53859 0.0658 0.3188 0.24809 2006 5 5 53860 0.0656 0.3188 0.24745 2006 5 6 53861 0.0654 0.3189 0.24676 2006 5 7 53862 0.0652 0.3190 0.24603 2006 5 8 53863 0.0651 0.3190 0.24517 2006 5 9 53864 0.0649 0.3190 0.24422 2006 5 10 53865 0.0648 0.3191 0.24321 2006 5 11 53866 0.0646 0.3191 0.24223 2006 5 12 53867 0.0645 0.3192 0.24138 2006 5 13 53868 0.0644 0.3192 0.24075 2006 5 14 53869 0.0643 0.3192 0.24041 2006 5 15 53870 0.0642 0.3192 0.24031 2006 5 16 53871 0.0641 0.3193 0.24039 2006 5 17 53872 0.0640 0.3193 0.24049 2006 5 18 53873 0.0639 0.3193 0.24046 2006 5 19 53874 0.0638 0.3193 0.24030 2006 5 20 53875 0.0638 0.3193 0.24002 2006 5 21 53876 0.0637 0.3193 0.23949 2006 5 22 53877 0.0636 0.3193 0.23880 2006 5 23 53878 0.0636 0.3193 0.23805 2006 5 24 53879 0.0635 0.3192 0.23744 2006 5 25 53880 0.0635 0.3192 0.23705 2006 5 26 53881 0.0635 0.3192 0.23694 2006 5 27 53882 0.0634 0.3191 0.23709 2006 5 28 53883 0.0634 0.3191 0.23746 2006 5 29 53884 0.0634 0.3190 0.23798 2006 5 30 53885 0.0633 0.3190 0.23850 2006 5 31 53886 0.0633 0.3189 0.23890 2006 6 1 53887 0.0633 0.3188 0.23910 2006 6 2 53888 0.0633 0.3187 0.23909 2006 6 3 53889 0.0633 0.3187 0.23889 2006 6 4 53890 0.0633 0.3186 0.23856 2006 6 5 53891 0.0633 0.3184 0.23818 2006 6 6 53892 0.0633 0.3183 0.23775 2006 6 7 53893 0.0633 0.3182 0.23738 2006 6 8 53894 0.0633 0.3181 0.23715 2006 6 9 53895 0.0633 0.3179 0.23711 2006 6 10 53896 0.0633 0.3178 0.23729 2006 6 11 53897 0.0633 0.3176 0.23764 2006 6 12 53898 0.0633 0.3175 0.23815 2006 6 13 53899 0.0633 0.3173 0.23873 2006 6 14 53900 0.0633 0.3171 0.23929 2006 6 15 53901 0.0633 0.3170 0.23967 2006 6 16 53902 0.0633 0.3168 0.23984 2006 6 17 53903 0.0633 0.3166 0.23982 2006 6 18 53904 0.0633 0.3164 0.23962 2006 6 19 53905 0.0633 0.3161 0.23932 2006 6 20 53906 0.0633 0.3159 0.23908 2006 6 21 53907 0.0632 0.3157 0.23906 2006 6 22 53908 0.0632 0.3155 0.23934 2006 6 23 53909 0.0632 0.3152 0.23989 2006 6 24 53910 0.0632 0.3150 0.24072 2006 6 25 53911 0.0631 0.3147 0.24177 2006 6 26 53912 0.0631 0.3144 0.24289 2006 6 27 53913 0.0631 0.3142 0.24391 2006 6 28 53914 0.0630 0.3139 0.24479 2006 6 29 53915 0.0630 0.3136 0.24554 2006 6 30 53916 0.0629 0.3133 0.24612 2006 7 1 53917 0.0628 0.3130 0.24653 2006 7 2 53918 0.0627 0.3127 0.24680 2006 7 3 53919 0.0627 0.3124 0.24701 2006 7 4 53920 0.0626 0.3121 0.24731 2006 7 5 53921 0.0625 0.3118 0.24761 2006 7 6 53922 0.0624 0.3114 0.24804 2006 7 7 53923 0.0622 0.3111 0.24867 2006 7 8 53924 0.0621 0.3108 0.24949 2006 7 9 53925 0.0620 0.3105 0.25047 2006 7 10 53926 0.0618 0.3101 0.25151 2006 7 11 53927 0.0617 0.3098 0.25250 2006 7 12 53928 0.0615 0.3094 0.25337 2006 7 13 53929 0.0613 0.3091 0.25396 2006 7 14 53930 0.0612 0.3087 0.25421 2006 7 15 53931 0.0610 0.3084 0.25422 2006 7 16 53932 0.0608 0.3080 0.25416 2006 7 17 53933 0.0605 0.3077 0.25409 2006 7 18 53934 0.0603 0.3073 0.25422 2006 7 19 53935 0.0601 0.3069 0.25466 2006 7 20 53936 0.0598 0.3066 0.25541 2006 7 21 53937 0.0595 0.3062 0.25643 2006 7 22 53938 0.0593 0.3058 0.25765 2006 7 23 53939 0.0590 0.3055 0.25892 2006 7 24 53940 0.0587 0.3051 0.26017 2006 7 25 53941 0.0583 0.3048 0.26137 2006 7 26 53942 0.0580 0.3044 0.26236 2006 7 27 53943 0.0577 0.3040 0.26316 2006 7 28 53944 0.0573 0.3037 0.26381 2006 7 29 53945 0.0570 0.3033 0.26430 2006 7 30 53946 0.0566 0.3030 0.26468 2006 7 31 53947 0.0562 0.3026 0.26508 2006 8 1 53948 0.0558 0.3023 0.26551 2006 8 2 53949 0.0553 0.3020 0.26606 2006 8 3 53950 0.0549 0.3016 0.26677 2006 8 4 53951 0.0545 0.3013 0.26763 2006 8 5 53952 0.0540 0.3010 0.26866 2006 8 6 53953 0.0535 0.3006 0.26976 2006 8 7 53954 0.0530 0.3003 0.27086 2006 8 8 53955 0.0525 0.3000 0.27180 2006 8 9 53956 0.0520 0.2997 0.27244 2006 8 10 53957 0.0515 0.2994 0.27273 2006 8 11 53958 0.0509 0.2991 0.27265 2006 8 12 53959 0.0504 0.2988 0.27231 2006 8 13 53960 0.0498 0.2986 0.27201 2006 8 14 53961 0.0492 0.2983 0.27184 2006 8 15 53962 0.0486 0.2981 0.27196 2006 8 16 53963 0.0480 0.2978 0.27244 2006 8 17 53964 0.0474 0.2976 0.27323 2006 8 18 53965 0.0468 0.2973 0.27427 2006 8 19 53966 0.0461 0.2971 0.27544 2006 8 20 53967 0.0454 0.2969 0.27664 2006 8 21 53968 0.0448 0.2967 0.27773 2006 8 22 53969 0.0441 0.2965 0.27863 2006 8 23 53970 0.0434 0.2964 0.27937 2006 8 24 53971 0.0427 0.2962 0.27994 2006 8 25 53972 0.0420 0.2960 0.28037 2006 8 26 53973 0.0412 0.2959 0.28066 2006 8 27 53974 0.0405 0.2958 0.28091 2006 8 28 53975 0.0397 0.2957 0.28123 2006 8 29 53976 0.0390 0.2956 0.28171 2006 8 30 53977 0.0382 0.2955 0.28238 2006 8 31 53978 0.0374 0.2954 0.28323 2006 9 1 53979 0.0366 0.2953 0.28421 2006 9 2 53980 0.0358 0.2953 0.28526 2006 9 3 53981 0.0350 0.2953 0.28631 2006 9 4 53982 0.0342 0.2952 0.28726 2006 9 5 53983 0.0334 0.2952 0.28796 2006 9 6 53984 0.0325 0.2953 0.28830 2006 9 7 53985 0.0317 0.2953 0.28821 2006 9 8 53986 0.0308 0.2953 0.28774 2006 9 9 53987 0.0300 0.2954 0.28702 2006 9 10 53988 0.0291 0.2955 0.28640 2006 9 11 53989 0.0282 0.2955 0.28601 2006 9 12 53990 0.0274 0.2957 0.28594 2006 9 13 53991 0.0265 0.2958 0.28624 2006 9 14 53992 0.0256 0.2959 0.28676 2006 9 15 53993 0.0247 0.2961 0.28738 2006 9 16 53994 0.0238 0.2962 0.28803 2006 9 17 53995 0.0229 0.2964 0.28843 2006 9 18 53996 0.0220 0.2966 0.28868 2006 9 19 53997 0.0211 0.2969 0.28879 2006 9 20 53998 0.0202 0.2971 0.28874 2006 9 21 53999 0.0193 0.2974 0.28859 2006 9 22 54000 0.0183 0.2976 0.28837 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) 53616 -64.59 .11 -4.47 .11 53617 -64.51 .11 -4.20 .11 53618 -64.48 .26 -4.18 .15 53619 -64.53 .38 -4.34 .20 53620 -64.60 .34 -4.54 .16 53621 -64.70 .34 -4.69 .16 53622 -64.86 .34 -4.83 .16 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 53616 0.248 0.044 -0.023 0.110 53617 0.237 0.044 -0.033 0.110 53618 0.224 0.103 -0.043 0.150 53619 0.209 0.151 -0.035 0.200 53620 0.204 0.135 -0.031 0.160 53621 0.198 0.135 -0.033 0.160 53622 0.192 0.135 -0.059 0.160 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 30 September 2005. 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 **************************************************************************