********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 15 September 2011 Vol. XXIV No. 037 ______________________________________________________________________ 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 12 May 2011 at 0000 UTC Beginning 1 January 2009: TAI-UTC = 34.000 000 seconds ________________________________________________________________________ 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 11 9 9 55813 0.17216 .00009 0.41065 .00009 -0.301883 0.000015 11 9 10 55814 0.17431 .00009 0.40938 .00010 -0.302330 0.000015 11 9 11 55815 0.17619 .00009 0.40810 .00009 -0.302853 0.000019 11 9 12 55816 0.17758 .00009 0.40687 .00009 -0.303454 0.000014 11 9 13 55817 0.17870 .00009 0.40569 .00009 -0.304124 0.000013 11 9 14 55818 0.17974 .00010 0.40464 .00009 -0.304837 0.000014 11 9 15 55819 0.18062 .00010 0.40369 .00009 -0.305511 0.000014 _______________________________________________________________________ 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 = 0.0897 + 0.1068 cos A + 0.0327 sin A - 0.0163 cos C + 0.0412 sin C y = 0.3300 + 0.0344 cos A - 0.0955 sin A + 0.0412 cos C + 0.0163 sin C UT1-UTC = -0.3527 - 0.00073 (MJD - 55827) - (UT2-UT1) where A = 2*pi*(MJD-55819)/365.25 and C = 2*pi*(MJD-55819)/435. TAI-UTC(MJD 55820) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55819)**0.80 S t = 0.00025 (MJD-55819)**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) 2011 9 16 55820 0.1814 0.4026 -0.30610 2011 9 17 55821 0.1821 0.4015 -0.30659 2011 9 18 55822 0.1829 0.4003 -0.30697 2011 9 19 55823 0.1836 0.3991 -0.30730 2011 9 20 55824 0.1842 0.3979 -0.30764 2011 9 21 55825 0.1849 0.3967 -0.30806 2011 9 22 55826 0.1855 0.3954 -0.30862 2011 9 23 55827 0.1860 0.3941 -0.30937 2011 9 24 55828 0.1866 0.3929 -0.31036 2011 9 25 55829 0.1870 0.3915 -0.31160 2011 9 26 55830 0.1875 0.3902 -0.31303 2011 9 27 55831 0.1879 0.3889 -0.31458 2011 9 28 55832 0.1883 0.3875 -0.31610 2011 9 29 55833 0.1887 0.3862 -0.31746 2011 9 30 55834 0.1891 0.3848 -0.31856 2011 10 1 55835 0.1894 0.3835 -0.31942 2011 10 2 55836 0.1897 0.3821 -0.32013 2011 10 3 55837 0.1900 0.3807 -0.32078 2011 10 4 55838 0.1902 0.3793 -0.32146 2011 10 5 55839 0.1904 0.3780 -0.32223 2011 10 6 55840 0.1906 0.3766 -0.32311 2011 10 7 55841 0.1908 0.3752 -0.32410 2011 10 8 55842 0.1909 0.3738 -0.32519 2011 10 9 55843 0.1911 0.3724 -0.32633 2011 10 10 55844 0.1912 0.3710 -0.32749 2011 10 11 55845 0.1912 0.3696 -0.32863 2011 10 12 55846 0.1913 0.3682 -0.32970 2011 10 13 55847 0.1913 0.3668 -0.33067 2011 10 14 55848 0.1913 0.3654 -0.33153 2011 10 15 55849 0.1913 0.3640 -0.33229 2011 10 16 55850 0.1912 0.3627 -0.33299 2011 10 17 55851 0.1912 0.3613 -0.33367 2011 10 18 55852 0.1911 0.3599 -0.33439 2011 10 19 55853 0.1909 0.3585 -0.33520 2011 10 20 55854 0.1908 0.3571 -0.33616 2011 10 21 55855 0.1906 0.3557 -0.33730 2011 10 22 55856 0.1904 0.3544 -0.33868 2011 10 23 55857 0.1902 0.3530 -0.34028 2011 10 24 55858 0.1900 0.3516 -0.34205 2011 10 25 55859 0.1897 0.3503 -0.34388 2011 10 26 55860 0.1895 0.3489 -0.34564 2011 10 27 55861 0.1892 0.3476 -0.34722 2011 10 28 55862 0.1888 0.3463 -0.34858 2011 10 29 55863 0.1885 0.3449 -0.34973 2011 10 30 55864 0.1881 0.3436 -0.35076 2011 10 31 55865 0.1878 0.3423 -0.35175 2011 11 1 55866 0.1873 0.3410 -0.35279 2011 11 2 55867 0.1869 0.3397 -0.35391 2011 11 3 55868 0.1865 0.3384 -0.35513 2011 11 4 55869 0.1860 0.3371 -0.35643 2011 11 5 55870 0.1855 0.3358 -0.35776 2011 11 6 55871 0.1850 0.3345 -0.35911 2011 11 7 55872 0.1845 0.3333 -0.36042 2011 11 8 55873 0.1839 0.3320 -0.36166 2011 11 9 55874 0.1833 0.3308 -0.36280 2011 11 10 55875 0.1828 0.3296 -0.36383 2011 11 11 55876 0.1821 0.3283 -0.36475 2011 11 12 55877 0.1815 0.3271 -0.36558 2011 11 13 55878 0.1809 0.3259 -0.36638 2011 11 14 55879 0.1802 0.3247 -0.36717 2011 11 15 55880 0.1795 0.3236 -0.36803 2011 11 16 55881 0.1788 0.3224 -0.36900 2011 11 17 55882 0.1781 0.3213 -0.37013 2011 11 18 55883 0.1774 0.3201 -0.37146 2011 11 19 55884 0.1767 0.3190 -0.37299 2011 11 20 55885 0.1759 0.3179 -0.37467 2011 11 21 55886 0.1751 0.3168 -0.37644 2011 11 22 55887 0.1743 0.3157 -0.37819 2011 11 23 55888 0.1735 0.3146 -0.37982 2011 11 24 55889 0.1727 0.3136 -0.38125 2011 11 25 55890 0.1718 0.3125 -0.38248 2011 11 26 55891 0.1710 0.3115 -0.38356 2011 11 27 55892 0.1701 0.3105 -0.38458 2011 11 28 55893 0.1692 0.3095 -0.38564 2011 11 29 55894 0.1683 0.3085 -0.38677 2011 11 30 55895 0.1674 0.3075 -0.38801 2011 12 1 55896 0.1665 0.3066 -0.38932 2011 12 2 55897 0.1656 0.3056 -0.39068 2011 12 3 55898 0.1646 0.3047 -0.39205 2011 12 4 55899 0.1637 0.3038 -0.39337 2011 12 5 55900 0.1627 0.3029 -0.39461 2011 12 6 55901 0.1617 0.3021 -0.39573 2011 12 7 55902 0.1607 0.3012 -0.39673 2011 12 8 55903 0.1597 0.3004 -0.39760 2011 12 9 55904 0.1587 0.2995 -0.39836 2011 12 10 55905 0.1577 0.2987 -0.39904 2011 12 11 55906 0.1567 0.2979 -0.39969 2011 12 12 55907 0.1556 0.2972 -0.40038 2011 12 13 55908 0.1546 0.2964 -0.40115 2011 12 14 55909 0.1535 0.2957 -0.40204 2011 12 15 55910 0.1525 0.2949 -0.40310 2011 12 16 55911 0.1514 0.2942 -0.40432 2011 12 17 55912 0.1503 0.2935 -0.40567 2011 12 18 55913 0.1492 0.2929 -0.40710 2011 12 19 55914 0.1481 0.2922 -0.40851 2011 12 20 55915 0.1470 0.2916 -0.40982 2011 12 21 55916 0.1459 0.2910 -0.41098 2011 12 22 55917 0.1448 0.2904 -0.41196 2011 12 23 55918 0.1437 0.2898 -0.41278 2011 12 24 55919 0.1426 0.2892 -0.41350 2011 12 25 55920 0.1415 0.2887 -0.41422 2011 12 26 55921 0.1404 0.2882 -0.41499 2011 12 27 55922 0.1392 0.2877 -0.41587 2011 12 28 55923 0.1381 0.2872 -0.41685 2011 12 29 55924 0.1370 0.2867 -0.41789 2011 12 30 55925 0.1358 0.2862 -0.41894 2011 12 31 55926 0.1347 0.2858 -0.41997 2012 1 1 55927 0.1335 0.2854 -0.42093 2012 1 2 55928 0.1324 0.2850 -0.42181 2012 1 3 55929 0.1313 0.2846 -0.42258 2012 1 4 55930 0.1301 0.2843 -0.42323 2012 1 5 55931 0.1290 0.2839 -0.42377 2012 1 6 55932 0.1278 0.2836 -0.42423 2012 1 7 55933 0.1267 0.2833 -0.42467 2012 1 8 55934 0.1255 0.2830 -0.42513 2012 1 9 55935 0.1244 0.2827 -0.42568 2012 1 10 55936 0.1233 0.2825 -0.42638 2012 1 11 55937 0.1221 0.2822 -0.42725 2012 1 12 55938 0.1210 0.2820 -0.42831 2012 1 13 55939 0.1198 0.2818 -0.42952 2012 1 14 55940 0.1187 0.2817 -0.43081 2012 1 15 55941 0.1176 0.2815 -0.43211 2012 1 16 55942 0.1165 0.2814 -0.43332 2012 1 17 55943 0.1153 0.2812 -0.43438 2012 1 18 55944 0.1142 0.2811 -0.43527 2012 1 19 55945 0.1131 0.2810 -0.43601 2012 1 20 55946 0.1120 0.2810 -0.43665 2012 1 21 55947 0.1109 0.2809 -0.43728 2012 1 22 55948 0.1098 0.2809 -0.43796 2012 1 23 55949 0.1087 0.2809 -0.43876 2012 1 24 55950 0.1076 0.2809 -0.43969 2012 1 25 55951 0.1065 0.2809 -0.44073 2012 1 26 55952 0.1055 0.2809 -0.44182 2012 1 27 55953 0.1044 0.2809 -0.44293 2012 1 28 55954 0.1033 0.2810 -0.44398 2012 1 29 55955 0.1023 0.2811 -0.44496 2012 1 30 55956 0.1012 0.2812 -0.44582 2012 1 31 55957 0.1002 0.2813 -0.44657 2012 2 1 55958 0.0992 0.2814 -0.44721 2012 2 2 55959 0.0981 0.2816 -0.44777 2012 2 3 55960 0.0971 0.2817 -0.44830 2012 2 4 55961 0.0961 0.2819 -0.44883 2012 2 5 55962 0.0951 0.2821 -0.44945 2012 2 6 55963 0.0941 0.2823 -0.45021 2012 2 7 55964 0.0932 0.2826 -0.45115 2012 2 8 55965 0.0922 0.2828 -0.45231 2012 2 9 55966 0.0912 0.2830 -0.45366 2012 2 10 55967 0.0903 0.2833 -0.45514 2012 2 11 55968 0.0894 0.2836 -0.45666 2012 2 12 55969 0.0884 0.2839 -0.45810 2012 2 13 55970 0.0875 0.2842 -0.45940 2012 2 14 55971 0.0866 0.2845 -0.46052 2012 2 15 55972 0.0857 0.2849 -0.46147 2012 2 16 55973 0.0849 0.2852 -0.46230 2012 2 17 55974 0.0840 0.2856 -0.46309 2012 2 18 55975 0.0831 0.2860 -0.46392 2012 2 19 55976 0.0823 0.2864 -0.46485 2012 2 20 55977 0.0815 0.2868 -0.46591 2012 2 21 55978 0.0807 0.2872 -0.46710 2012 2 22 55979 0.0799 0.2876 -0.46837 2012 2 23 55980 0.0791 0.2880 -0.46968 2012 2 24 55981 0.0783 0.2885 -0.47098 2012 2 25 55982 0.0775 0.2890 -0.47222 2012 2 26 55983 0.0768 0.2894 -0.47336 2012 2 27 55984 0.0761 0.2899 -0.47439 2012 2 28 55985 0.0753 0.2904 -0.47531 2012 2 29 55986 0.0746 0.2909 -0.47614 2012 3 1 55987 0.0739 0.2914 -0.47691 2012 3 2 55988 0.0733 0.2920 -0.47768 2012 3 3 55989 0.0726 0.2925 -0.47850 2012 3 4 55990 0.0719 0.2930 -0.47944 2012 3 5 55991 0.0713 0.2936 -0.48056 2012 3 6 55992 0.0707 0.2942 -0.48189 2012 3 7 55993 0.0701 0.2947 -0.48345 2012 3 8 55994 0.0695 0.2953 -0.48519 2012 3 9 55995 0.0689 0.2959 -0.48704 2012 3 10 55996 0.0684 0.2965 -0.48889 2012 3 11 55997 0.0678 0.2971 -0.49062 2012 3 12 55998 0.0673 0.2977 -0.49218 2012 3 13 55999 0.0668 0.2983 -0.49357 2012 3 14 56000 0.0663 0.2990 -0.49482 2012 3 15 56001 0.0658 0.2996 -0.49603 2012 3 16 56002 0.0653 0.3002 -0.49728 2012 3 17 56003 0.0649 0.3009 -0.49864 2012 3 18 56004 0.0644 0.3015 -0.50014 2012 3 19 56005 0.0640 0.3022 -0.50179 2012 3 20 56006 0.0636 0.3029 -0.50357 2012 3 21 56007 0.0632 0.3035 -0.50542 2012 3 22 56008 0.0628 0.3042 -0.50727 2012 3 23 56009 0.0625 0.3049 -0.50906 2012 3 24 56010 0.0621 0.3056 -0.51072 2012 3 25 56011 0.0618 0.3063 -0.51219 2012 3 26 56012 0.0615 0.3069 -0.51347 2012 3 27 56013 0.0612 0.3076 -0.51456 2012 3 28 56014 0.0609 0.3083 -0.51550 2012 3 29 56015 0.0606 0.3090 -0.51637 2012 3 30 56016 0.0604 0.3097 -0.51722 2012 3 31 56017 0.0602 0.3104 -0.51812 2012 4 1 56018 0.0599 0.3112 -0.51914 2012 4 2 56019 0.0597 0.3119 -0.52033 2012 4 3 56020 0.0595 0.3126 -0.52169 2012 4 4 56021 0.0594 0.3133 -0.52323 2012 4 5 56022 0.0592 0.3140 -0.52488 2012 4 6 56023 0.0591 0.3147 -0.52656 2012 4 7 56024 0.0589 0.3154 -0.52817 2012 4 8 56025 0.0588 0.3162 -0.52962 2012 4 9 56026 0.0587 0.3169 -0.53090 2012 4 10 56027 0.0587 0.3176 -0.53201 2012 4 11 56028 0.0586 0.3183 -0.53302 2012 4 12 56029 0.0585 0.3190 -0.53401 2012 4 13 56030 0.0585 0.3197 -0.53503 2012 4 14 56031 0.0585 0.3204 -0.53612 2012 4 15 56032 0.0585 0.3212 -0.53726 2012 4 16 56033 0.0585 0.3219 -0.53844 2012 4 17 56034 0.0585 0.3226 -0.53962 2012 4 18 56035 0.0585 0.3233 -0.54077 2012 4 19 56036 0.0586 0.3240 -0.54187 2012 4 20 56037 0.0586 0.3247 -0.54290 2012 4 21 56038 0.0587 0.3254 -0.54386 2012 4 22 56039 0.0588 0.3261 -0.54473 2012 4 23 56040 0.0589 0.3268 -0.54554 2012 4 24 56041 0.0590 0.3275 -0.54628 2012 4 25 56042 0.0591 0.3282 -0.54697 2012 4 26 56043 0.0593 0.3289 -0.54761 2012 4 27 56044 0.0594 0.3295 -0.54824 2012 4 28 56045 0.0596 0.3302 -0.54898 2012 4 29 56046 0.0598 0.3309 -0.54983 2012 4 30 56047 0.0600 0.3316 -0.55083 2012 5 1 56048 0.0602 0.3322 -0.55198 2012 5 2 56049 0.0604 0.3329 -0.55326 2012 5 3 56050 0.0606 0.3335 -0.55464 2012 5 4 56051 0.0608 0.3342 -0.55599 2012 5 5 56052 0.0611 0.3348 -0.55722 2012 5 6 56053 0.0613 0.3355 -0.55825 2012 5 7 56054 0.0616 0.3361 -0.55903 2012 5 8 56055 0.0619 0.3367 -0.55966 2012 5 9 56056 0.0622 0.3373 -0.56024 2012 5 10 56057 0.0625 0.3379 -0.56082 2012 5 11 56058 0.0628 0.3386 -0.56157 2012 5 12 56059 0.0631 0.3392 -0.56242 2012 5 13 56060 0.0634 0.3397 -0.56333 2012 5 14 56061 0.0638 0.3403 -0.56424 2012 5 15 56062 0.0641 0.3409 -0.56514 2012 5 16 56063 0.0645 0.3415 -0.56599 2012 5 17 56064 0.0648 0.3420 -0.56676 2012 5 18 56065 0.0652 0.3426 -0.56737 2012 5 19 56066 0.0656 0.3431 -0.56785 2012 5 20 56067 0.0660 0.3437 -0.56819 2012 5 21 56068 0.0664 0.3442 -0.56840 2012 5 22 56069 0.0668 0.3447 -0.56849 2012 5 23 56070 0.0672 0.3453 -0.56853 2012 5 24 56071 0.0676 0.3458 -0.56853 2012 5 25 56072 0.0681 0.3463 -0.56853 2012 5 26 56073 0.0685 0.3468 -0.56868 2012 5 27 56074 0.0689 0.3472 -0.56902 2012 5 28 56075 0.0694 0.3477 -0.56959 2012 5 29 56076 0.0698 0.3482 -0.57033 2012 5 30 56077 0.0703 0.3486 -0.57119 2012 5 31 56078 0.0707 0.3491 -0.57208 2012 6 1 56079 0.0712 0.3495 -0.57288 2012 6 2 56080 0.0717 0.3500 -0.57355 2012 6 3 56081 0.0722 0.3504 -0.57398 2012 6 4 56082 0.0726 0.3508 -0.57419 2012 6 5 56083 0.0731 0.3512 -0.57424 2012 6 6 56084 0.0736 0.3516 -0.57427 2012 6 7 56085 0.0741 0.3520 -0.57432 2012 6 8 56086 0.0746 0.3524 -0.57449 2012 6 9 56087 0.0751 0.3527 -0.57476 2012 6 10 56088 0.0756 0.3531 -0.57505 2012 6 11 56089 0.0761 0.3534 -0.57536 2012 6 12 56090 0.0766 0.3538 -0.57565 2012 6 13 56091 0.0771 0.3541 -0.57587 2012 6 14 56092 0.0776 0.3544 -0.57596 2012 6 15 56093 0.0781 0.3547 -0.57588 2012 6 16 56094 0.0787 0.3550 -0.57570 2012 6 17 56095 0.0792 0.3553 -0.57533 2012 6 18 56096 0.0797 0.3556 -0.57495 2012 6 19 56097 0.0802 0.3558 -0.57452 2012 6 20 56098 0.0807 0.3561 -0.57408 2012 6 21 56099 0.0812 0.3564 -0.57362 2012 6 22 56100 0.0817 0.3566 -0.57324 2012 6 23 56101 0.0823 0.3568 -0.57301 2012 6 24 56102 0.0828 0.3571 -0.57292 2012 6 25 56103 0.0833 0.3573 -0.57296 2012 6 26 56104 0.0838 0.3575 -0.57304 2012 6 27 56105 0.0843 0.3577 -0.57318 2012 6 28 56106 0.0848 0.3578 -0.57333 2012 6 29 56107 0.0853 0.3580 -0.57337 2012 6 30 56108 0.0858 0.3582 -0.57325 2012 7 1 56109 0.0863 0.3583 -0.57293 2012 7 2 56110 0.0868 0.3585 -0.57251 2012 7 3 56111 0.0873 0.3586 -0.57211 2012 7 4 56112 0.0878 0.3588 -0.57175 2012 7 5 56113 0.0883 0.3589 -0.57155 2012 7 6 56114 0.0888 0.3590 -0.57155 2012 7 7 56115 0.0893 0.3591 -0.57168 2012 7 8 56116 0.0897 0.3592 -0.57183 2012 7 9 56117 0.0902 0.3593 -0.57195 2012 7 10 56118 0.0907 0.3594 -0.57197 2012 7 11 56119 0.0912 0.3594 -0.57185 2012 7 12 56120 0.0916 0.3595 -0.57156 2012 7 13 56121 0.0921 0.3595 -0.57116 2012 7 14 56122 0.0925 0.3596 -0.57066 2012 7 15 56123 0.0930 0.3596 -0.57011 2012 7 16 56124 0.0934 0.3596 -0.56952 2012 7 17 56125 0.0938 0.3597 -0.56892 2012 7 18 56126 0.0943 0.3597 -0.56843 2012 7 19 56127 0.0947 0.3597 -0.56805 2012 7 20 56128 0.0951 0.3597 -0.56775 2012 7 21 56129 0.0955 0.3597 -0.56760 2012 7 22 56130 0.0959 0.3596 -0.56761 2012 7 23 56131 0.0963 0.3596 -0.56774 2012 7 24 56132 0.0967 0.3596 -0.56792 2012 7 25 56133 0.0971 0.3595 -0.56807 2012 7 26 56134 0.0975 0.3595 -0.56812 2012 7 27 56135 0.0978 0.3595 -0.56809 2012 7 28 56136 0.0982 0.3594 -0.56798 2012 7 29 56137 0.0985 0.3593 -0.56776 2012 7 30 56138 0.0989 0.3593 -0.56754 2012 7 31 56139 0.0992 0.3592 -0.56734 2012 8 1 56140 0.0996 0.3591 -0.56722 2012 8 2 56141 0.0999 0.3590 -0.56720 2012 8 3 56142 0.1002 0.3589 -0.56725 2012 8 4 56143 0.1005 0.3588 -0.56736 2012 8 5 56144 0.1008 0.3587 -0.56749 2012 8 6 56145 0.1011 0.3586 -0.56762 2012 8 7 56146 0.1013 0.3585 -0.56776 2012 8 8 56147 0.1016 0.3584 -0.56781 2012 8 9 56148 0.1019 0.3582 -0.56781 2012 8 10 56149 0.1021 0.3581 -0.56772 2012 8 11 56150 0.1024 0.3580 -0.56751 2012 8 12 56151 0.1026 0.3579 -0.56723 2012 8 13 56152 0.1028 0.3577 -0.56695 2012 8 14 56153 0.1030 0.3576 -0.56667 2012 8 15 56154 0.1032 0.3574 -0.56645 2012 8 16 56155 0.1034 0.3573 -0.56632 2012 8 17 56156 0.1036 0.3571 -0.56636 2012 8 18 56157 0.1038 0.3570 -0.56657 2012 8 19 56158 0.1039 0.3568 -0.56693 2012 8 20 56159 0.1041 0.3566 -0.56742 2012 8 21 56160 0.1042 0.3565 -0.56792 2012 8 22 56161 0.1044 0.3563 -0.56836 2012 8 23 56162 0.1045 0.3561 -0.56869 2012 8 24 56163 0.1046 0.3560 -0.56892 2012 8 25 56164 0.1047 0.3558 -0.56907 2012 8 26 56165 0.1048 0.3556 -0.56921 2012 8 27 56166 0.1049 0.3555 -0.56940 2012 8 28 56167 0.1050 0.3553 -0.56965 2012 8 29 56168 0.1050 0.3551 -0.57005 2012 8 30 56169 0.1051 0.3549 -0.57059 2012 8 31 56170 0.1051 0.3548 -0.57128 2012 9 1 56171 0.1052 0.3546 -0.57210 2012 9 2 56172 0.1052 0.3544 -0.57293 2012 9 3 56173 0.1052 0.3542 -0.57373 2012 9 4 56174 0.1052 0.3541 -0.57443 2012 9 5 56175 0.1052 0.3539 -0.57501 2012 9 6 56176 0.1052 0.3537 -0.57547 2012 9 7 56177 0.1052 0.3535 -0.57579 2012 9 8 56178 0.1051 0.3534 -0.57605 2012 9 9 56179 0.1051 0.3532 -0.57628 2012 9 10 56180 0.1050 0.3530 -0.57649 2012 9 11 56181 0.1050 0.3528 -0.57672 2012 9 12 56182 0.1049 0.3527 -0.57703 2012 9 13 56183 0.1048 0.3525 -0.57741 2012 9 14 56184 0.1047 0.3524 -0.57792 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) 55800 -78.41 0.30 -11.05 0.04 55801 -78.23 0.30 -11.04 0.03 55802 -78.33 0.30 -10.80 0.03 55803 -78.68 0.30 -10.46 0.15 55804 -79.17 0.30 -10.24 0.15 55805 -79.66 0.30 -10.22 0.15 55806 -80.01 0.30 -10.28 0.15 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55800 -0.068 0.119 0.181 0.040 55801 -0.083 0.119 0.176 0.030 55802 -0.110 0.119 0.178 0.030 55803 -0.132 0.119 0.168 0.150 55804 -0.152 0.119 0.161 0.150 55805 -0.180 0.119 0.154 0.150 55806 -0.199 0.119 0.162 0.150 The recommended software to predict celestial pole offsets can be found at and software for the calculation of the dX and dY components with respect to IAU2000A Nutation/Precession Theory can be found at the web site in Chapter 5 Section 5.5 of the IERS Conventions (2010).