********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 29 September 2011 Vol. XXIV No. 039 ______________________________________________________________________ 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 = -0.4 seconds beginning 04 Nov 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 23 55827 0.18245 .00010 0.39122 .00009 -0.309892 0.000008 11 9 24 55828 0.18261 .00009 0.38957 .00009 -0.311010 0.000009 11 9 25 55829 0.18256 .00009 0.38803 .00009 -0.312417 0.000010 11 9 26 55830 0.18206 .00009 0.38632 .00009 -0.314026 0.000011 11 9 27 55831 0.18131 .00009 0.38446 .00009 -0.315770 0.000010 11 9 28 55832 0.18052 .00009 0.38251 .00009 -0.317529 0.000011 11 9 29 55833 0.17994 .00009 0.38049 .00009 -0.319140 0.000013 _______________________________________________________________________ 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 = 0.0790 + 0.1116 cos A + 0.0029 sin A - 0.0099 cos C + 0.0460 sin C y = 0.3286 + 0.0076 cos A - 0.1017 sin A + 0.0460 cos C + 0.0099 sin C UT1-UTC = -0.3693 - 0.00074 (MJD - 55841) - (UT2-UT1) where A = 2*pi*(MJD-55833)/365.25 and C = 2*pi*(MJD-55833)/435. TAI-UTC(MJD 55834) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55833)**0.80 S t = 0.00025 (MJD-55833)**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 30 55834 0.1796 0.3786 -0.32053 2011 10 1 55835 0.1795 0.3769 -0.32170 2011 10 2 55836 0.1794 0.3753 -0.32267 2011 10 3 55837 0.1794 0.3739 -0.32355 2011 10 4 55838 0.1794 0.3725 -0.32445 2011 10 5 55839 0.1793 0.3711 -0.32542 2011 10 6 55840 0.1792 0.3698 -0.32650 2011 10 7 55841 0.1792 0.3684 -0.32768 2011 10 8 55842 0.1791 0.3670 -0.32896 2011 10 9 55843 0.1791 0.3657 -0.33030 2011 10 10 55844 0.1791 0.3644 -0.33167 2011 10 11 55845 0.1790 0.3632 -0.33302 2011 10 12 55846 0.1790 0.3619 -0.33432 2011 10 13 55847 0.1789 0.3607 -0.33552 2011 10 14 55848 0.1788 0.3594 -0.33661 2011 10 15 55849 0.1787 0.3582 -0.33759 2011 10 16 55850 0.1786 0.3570 -0.33848 2011 10 17 55851 0.1784 0.3558 -0.33932 2011 10 18 55852 0.1783 0.3546 -0.34016 2011 10 19 55853 0.1781 0.3534 -0.34107 2011 10 20 55854 0.1779 0.3522 -0.34209 2011 10 21 55855 0.1777 0.3510 -0.34327 2011 10 22 55856 0.1775 0.3498 -0.34466 2011 10 23 55857 0.1772 0.3487 -0.34626 2011 10 24 55858 0.1769 0.3475 -0.34801 2011 10 25 55859 0.1766 0.3464 -0.34981 2011 10 26 55860 0.1763 0.3452 -0.35155 2011 10 27 55861 0.1760 0.3441 -0.35310 2011 10 28 55862 0.1757 0.3429 -0.35442 2011 10 29 55863 0.1753 0.3418 -0.35554 2011 10 30 55864 0.1749 0.3407 -0.35653 2011 10 31 55865 0.1745 0.3396 -0.35748 2011 11 1 55866 0.1741 0.3385 -0.35849 2011 11 2 55867 0.1736 0.3374 -0.35958 2011 11 3 55868 0.1732 0.3363 -0.36077 2011 11 4 55869 0.1727 0.3352 -0.36202 2011 11 5 55870 0.1722 0.3342 -0.36332 2011 11 6 55871 0.1717 0.3331 -0.36463 2011 11 7 55872 0.1712 0.3321 -0.36591 2011 11 8 55873 0.1706 0.3310 -0.36713 2011 11 9 55874 0.1701 0.3300 -0.36826 2011 11 10 55875 0.1695 0.3290 -0.36927 2011 11 11 55876 0.1689 0.3280 -0.37017 2011 11 12 55877 0.1683 0.3270 -0.37097 2011 11 13 55878 0.1676 0.3260 -0.37173 2011 11 14 55879 0.1670 0.3250 -0.37250 2011 11 15 55880 0.1663 0.3240 -0.37332 2011 11 16 55881 0.1657 0.3231 -0.37426 2011 11 17 55882 0.1650 0.3221 -0.37535 2011 11 18 55883 0.1643 0.3212 -0.37662 2011 11 19 55884 0.1636 0.3203 -0.37808 2011 11 20 55885 0.1629 0.3194 -0.37969 2011 11 21 55886 0.1621 0.3185 -0.38137 2011 11 22 55887 0.1614 0.3176 -0.38303 2011 11 23 55888 0.1606 0.3167 -0.38455 2011 11 24 55889 0.1598 0.3159 -0.38589 2011 11 25 55890 0.1590 0.3150 -0.38702 2011 11 26 55891 0.1582 0.3142 -0.38799 2011 11 27 55892 0.1574 0.3134 -0.38890 2011 11 28 55893 0.1566 0.3126 -0.38983 2011 11 29 55894 0.1558 0.3118 -0.39083 2011 11 30 55895 0.1549 0.3110 -0.39194 2011 12 1 55896 0.1541 0.3103 -0.39313 2011 12 2 55897 0.1532 0.3095 -0.39436 2011 12 3 55898 0.1523 0.3088 -0.39560 2011 12 4 55899 0.1514 0.3081 -0.39681 2011 12 5 55900 0.1505 0.3074 -0.39795 2011 12 6 55901 0.1496 0.3067 -0.39900 2011 12 7 55902 0.1487 0.3060 -0.39992 2011 12 8 55903 0.1478 0.3053 -0.40074 2011 12 9 55904 0.1469 0.3047 -0.40147 2011 12 10 55905 0.1460 0.3041 -0.40214 2011 12 11 55906 0.1450 0.3035 -0.40279 2011 12 12 55907 0.1441 0.3029 -0.40349 2011 12 13 55908 0.1431 0.3023 -0.40429 2011 12 14 55909 0.1422 0.3017 -0.40523 2011 12 15 55910 0.1412 0.3012 -0.40634 2011 12 16 55911 0.1402 0.3007 -0.40761 2011 12 17 55912 0.1392 0.3001 -0.40903 2011 12 18 55913 0.1383 0.2996 -0.41053 2011 12 19 55914 0.1373 0.2992 -0.41203 2011 12 20 55915 0.1363 0.2987 -0.41344 2011 12 21 55916 0.1353 0.2982 -0.41470 2011 12 22 55917 0.1343 0.2978 -0.41578 2011 12 23 55918 0.1333 0.2974 -0.41671 2011 12 24 55919 0.1323 0.2970 -0.41754 2011 12 25 55920 0.1313 0.2966 -0.41838 2011 12 26 55921 0.1303 0.2962 -0.41928 2011 12 27 55922 0.1293 0.2959 -0.42028 2011 12 28 55923 0.1283 0.2956 -0.42138 2011 12 29 55924 0.1273 0.2952 -0.42255 2011 12 30 55925 0.1263 0.2949 -0.42373 2011 12 31 55926 0.1253 0.2947 -0.42487 2012 1 1 55927 0.1243 0.2944 -0.42594 2012 1 2 55928 0.1233 0.2941 -0.42691 2012 1 3 55929 0.1223 0.2939 -0.42775 2012 1 4 55930 0.1213 0.2937 -0.42846 2012 1 5 55931 0.1203 0.2935 -0.42906 2012 1 6 55932 0.1193 0.2933 -0.42957 2012 1 7 55933 0.1183 0.2931 -0.43006 2012 1 8 55934 0.1173 0.2930 -0.43057 2012 1 9 55935 0.1163 0.2928 -0.43117 2012 1 10 55936 0.1153 0.2927 -0.43192 2012 1 11 55937 0.1143 0.2926 -0.43284 2012 1 12 55938 0.1133 0.2925 -0.43395 2012 1 13 55939 0.1123 0.2924 -0.43520 2012 1 14 55940 0.1113 0.2924 -0.43654 2012 1 15 55941 0.1104 0.2923 -0.43787 2012 1 16 55942 0.1094 0.2923 -0.43912 2012 1 17 55943 0.1084 0.2923 -0.44023 2012 1 18 55944 0.1075 0.2923 -0.44116 2012 1 19 55945 0.1065 0.2923 -0.44194 2012 1 20 55946 0.1056 0.2924 -0.44263 2012 1 21 55947 0.1046 0.2924 -0.44329 2012 1 22 55948 0.1037 0.2925 -0.44401 2012 1 23 55949 0.1028 0.2926 -0.44485 2012 1 24 55950 0.1019 0.2927 -0.44581 2012 1 25 55951 0.1010 0.2928 -0.44688 2012 1 26 55952 0.1001 0.2929 -0.44801 2012 1 27 55953 0.0992 0.2930 -0.44915 2012 1 28 55954 0.0983 0.2932 -0.45024 2012 1 29 55955 0.0974 0.2933 -0.45124 2012 1 30 55956 0.0965 0.2935 -0.45214 2012 1 31 55957 0.0957 0.2937 -0.45292 2012 2 1 55958 0.0948 0.2939 -0.45360 2012 2 2 55959 0.0940 0.2942 -0.45419 2012 2 3 55960 0.0931 0.2944 -0.45474 2012 2 4 55961 0.0923 0.2946 -0.45531 2012 2 5 55962 0.0915 0.2949 -0.45596 2012 2 6 55963 0.0907 0.2952 -0.45674 2012 2 7 55964 0.0899 0.2955 -0.45771 2012 2 8 55965 0.0891 0.2958 -0.45890 2012 2 9 55966 0.0884 0.2961 -0.46027 2012 2 10 55967 0.0876 0.2964 -0.46178 2012 2 11 55968 0.0869 0.2967 -0.46332 2012 2 12 55969 0.0861 0.2971 -0.46480 2012 2 13 55970 0.0854 0.2974 -0.46612 2012 2 14 55971 0.0847 0.2978 -0.46727 2012 2 15 55972 0.0840 0.2982 -0.46825 2012 2 16 55973 0.0833 0.2986 -0.46911 2012 2 17 55974 0.0826 0.2990 -0.46994 2012 2 18 55975 0.0820 0.2994 -0.47081 2012 2 19 55976 0.0813 0.2998 -0.47177 2012 2 20 55977 0.0807 0.3003 -0.47286 2012 2 21 55978 0.0800 0.3007 -0.47408 2012 2 22 55979 0.0794 0.3012 -0.47539 2012 2 23 55980 0.0788 0.3016 -0.47673 2012 2 24 55981 0.0783 0.3021 -0.47806 2012 2 25 55982 0.0777 0.3026 -0.47933 2012 2 26 55983 0.0771 0.3031 -0.48050 2012 2 27 55984 0.0766 0.3036 -0.48156 2012 2 28 55985 0.0761 0.3041 -0.48250 2012 2 29 55986 0.0755 0.3046 -0.48336 2012 3 1 55987 0.0750 0.3051 -0.48416 2012 3 2 55988 0.0746 0.3056 -0.48495 2012 3 3 55989 0.0741 0.3062 -0.48580 2012 3 4 55990 0.0736 0.3067 -0.48676 2012 3 5 55991 0.0732 0.3073 -0.48789 2012 3 6 55992 0.0728 0.3078 -0.48924 2012 3 7 55993 0.0723 0.3084 -0.49080 2012 3 8 55994 0.0719 0.3090 -0.49255 2012 3 9 55995 0.0716 0.3095 -0.49439 2012 3 10 55996 0.0712 0.3101 -0.49622 2012 3 11 55997 0.0708 0.3107 -0.49792 2012 3 12 55998 0.0705 0.3113 -0.49944 2012 3 13 55999 0.0702 0.3119 -0.50075 2012 3 14 56000 0.0699 0.3125 -0.50192 2012 3 15 56001 0.0696 0.3131 -0.50301 2012 3 16 56002 0.0693 0.3137 -0.50411 2012 3 17 56003 0.0690 0.3143 -0.50528 2012 3 18 56004 0.0688 0.3149 -0.50656 2012 3 19 56005 0.0685 0.3155 -0.50795 2012 3 20 56006 0.0683 0.3162 -0.50944 2012 3 21 56007 0.0681 0.3168 -0.51098 2012 3 22 56008 0.0679 0.3174 -0.51253 2012 3 23 56009 0.0678 0.3180 -0.51404 2012 3 24 56010 0.0676 0.3187 -0.51547 2012 3 25 56011 0.0675 0.3193 -0.51681 2012 3 26 56012 0.0673 0.3199 -0.51804 2012 3 27 56013 0.0672 0.3206 -0.51919 2012 3 28 56014 0.0671 0.3212 -0.52029 2012 3 29 56015 0.0670 0.3218 -0.52139 2012 3 30 56016 0.0670 0.3225 -0.52254 2012 3 31 56017 0.0669 0.3231 -0.52381 2012 4 1 56018 0.0669 0.3238 -0.52526 2012 4 2 56019 0.0668 0.3244 -0.52694 2012 4 3 56020 0.0668 0.3250 -0.52887 2012 4 4 56021 0.0668 0.3257 -0.53106 2012 4 5 56022 0.0668 0.3263 -0.53341 2012 4 6 56023 0.0669 0.3269 -0.53582 2012 4 7 56024 0.0669 0.3276 -0.53814 2012 4 8 56025 0.0670 0.3282 -0.54024 2012 4 9 56026 0.0670 0.3288 -0.54205 2012 4 10 56027 0.0671 0.3295 -0.54357 2012 4 11 56028 0.0672 0.3301 -0.54488 2012 4 12 56029 0.0673 0.3307 -0.54608 2012 4 13 56030 0.0675 0.3313 -0.54724 2012 4 14 56031 0.0676 0.3319 -0.54844 2012 4 15 56032 0.0678 0.3326 -0.54970 2012 4 16 56033 0.0679 0.3332 -0.55103 2012 4 17 56034 0.0681 0.3338 -0.55239 2012 4 18 56035 0.0683 0.3344 -0.55376 2012 4 19 56036 0.0685 0.3350 -0.55508 2012 4 20 56037 0.0687 0.3356 -0.55631 2012 4 21 56038 0.0689 0.3362 -0.55742 2012 4 22 56039 0.0692 0.3367 -0.55836 2012 4 23 56040 0.0694 0.3373 -0.55915 2012 4 24 56041 0.0697 0.3379 -0.55978 2012 4 25 56042 0.0700 0.3385 -0.56031 2012 4 26 56043 0.0702 0.3390 -0.56078 2012 4 27 56044 0.0705 0.3396 -0.56125 2012 4 28 56045 0.0708 0.3401 -0.56180 2012 4 29 56046 0.0712 0.3407 -0.56248 2012 4 30 56047 0.0715 0.3412 -0.56335 2012 5 1 56048 0.0718 0.3418 -0.56443 2012 5 2 56049 0.0722 0.3423 -0.56568 2012 5 3 56050 0.0725 0.3428 -0.56705 2012 5 4 56051 0.0729 0.3433 -0.56847 2012 5 5 56052 0.0733 0.3438 -0.56981 2012 5 6 56053 0.0737 0.3443 -0.57098 2012 5 7 56054 0.0741 0.3448 -0.57194 2012 5 8 56055 0.0745 0.3453 -0.57274 2012 5 9 56056 0.0749 0.3458 -0.57347 2012 5 10 56057 0.0753 0.3463 -0.57423 2012 5 11 56058 0.0757 0.3467 -0.57503 2012 5 12 56059 0.0762 0.3472 -0.57588 2012 5 13 56060 0.0766 0.3476 -0.57670 2012 5 14 56061 0.0771 0.3481 -0.57752 2012 5 15 56062 0.0775 0.3485 -0.57830 2012 5 16 56063 0.0780 0.3489 -0.57897 2012 5 17 56064 0.0785 0.3493 -0.57958 2012 5 18 56065 0.0789 0.3498 -0.58010 2012 5 19 56066 0.0794 0.3501 -0.58053 2012 5 20 56067 0.0799 0.3505 -0.58086 2012 5 21 56068 0.0804 0.3509 -0.58115 2012 5 22 56069 0.0809 0.3513 -0.58139 2012 5 23 56070 0.0814 0.3516 -0.58161 2012 5 24 56071 0.0819 0.3520 -0.58178 2012 5 25 56072 0.0825 0.3523 -0.58198 2012 5 26 56073 0.0830 0.3527 -0.58232 2012 5 27 56074 0.0835 0.3530 -0.58277 2012 5 28 56075 0.0840 0.3533 -0.58335 2012 5 29 56076 0.0846 0.3536 -0.58403 2012 5 30 56077 0.0851 0.3539 -0.58479 2012 5 31 56078 0.0857 0.3542 -0.58557 2012 6 1 56079 0.0862 0.3545 -0.58627 2012 6 2 56080 0.0867 0.3547 -0.58682 2012 6 3 56081 0.0873 0.3550 -0.58718 2012 6 4 56082 0.0878 0.3552 -0.58732 2012 6 5 56083 0.0884 0.3555 -0.58738 2012 6 6 56084 0.0889 0.3557 -0.58743 2012 6 7 56085 0.0895 0.3559 -0.58755 2012 6 8 56086 0.0901 0.3561 -0.58786 2012 6 9 56087 0.0906 0.3563 -0.58826 2012 6 10 56088 0.0912 0.3565 -0.58870 2012 6 11 56089 0.0917 0.3567 -0.58911 2012 6 12 56090 0.0923 0.3568 -0.58946 2012 6 13 56091 0.0928 0.3570 -0.58973 2012 6 14 56092 0.0934 0.3571 -0.58989 2012 6 15 56093 0.0940 0.3573 -0.58988 2012 6 16 56094 0.0945 0.3574 -0.58974 2012 6 17 56095 0.0951 0.3575 -0.58947 2012 6 18 56096 0.0956 0.3576 -0.58910 2012 6 19 56097 0.0962 0.3577 -0.58865 2012 6 20 56098 0.0967 0.3578 -0.58818 2012 6 21 56099 0.0973 0.3579 -0.58772 2012 6 22 56100 0.0978 0.3579 -0.58730 2012 6 23 56101 0.0983 0.3580 -0.58706 2012 6 24 56102 0.0989 0.3581 -0.58701 2012 6 25 56103 0.0994 0.3581 -0.58717 2012 6 26 56104 0.0999 0.3581 -0.58746 2012 6 27 56105 0.1005 0.3581 -0.58780 2012 6 28 56106 0.1010 0.3582 -0.58812 2012 6 29 56107 0.1015 0.3582 -0.58831 2012 6 30 56108 0.1020 0.3581 -0.58835 2012 7 1 56109 0.1025 0.3581 -0.58820 2012 7 2 56110 0.1030 0.3581 -0.58787 2012 7 3 56111 0.1035 0.3581 -0.58746 2012 7 4 56112 0.1040 0.3580 -0.58710 2012 7 5 56113 0.1045 0.3580 -0.58681 2012 7 6 56114 0.1050 0.3579 -0.58665 2012 7 7 56115 0.1055 0.3578 -0.58660 2012 7 8 56116 0.1060 0.3578 -0.58657 2012 7 9 56117 0.1064 0.3577 -0.58653 2012 7 10 56118 0.1069 0.3576 -0.58644 2012 7 11 56119 0.1073 0.3575 -0.58628 2012 7 12 56120 0.1078 0.3574 -0.58598 2012 7 13 56121 0.1082 0.3573 -0.58552 2012 7 14 56122 0.1086 0.3571 -0.58497 2012 7 15 56123 0.1091 0.3570 -0.58428 2012 7 16 56124 0.1095 0.3569 -0.58361 2012 7 17 56125 0.1099 0.3567 -0.58294 2012 7 18 56126 0.1103 0.3566 -0.58231 2012 7 19 56127 0.1107 0.3564 -0.58172 2012 7 20 56128 0.1110 0.3562 -0.58125 2012 7 21 56129 0.1114 0.3561 -0.58095 2012 7 22 56130 0.1118 0.3559 -0.58081 2012 7 23 56131 0.1121 0.3557 -0.58078 2012 7 24 56132 0.1125 0.3555 -0.58074 2012 7 25 56133 0.1128 0.3553 -0.58070 2012 7 26 56134 0.1131 0.3551 -0.58064 2012 7 27 56135 0.1135 0.3549 -0.58043 2012 7 28 56136 0.1138 0.3547 -0.58008 2012 7 29 56137 0.1141 0.3544 -0.57958 2012 7 30 56138 0.1143 0.3542 -0.57904 2012 7 31 56139 0.1146 0.3540 -0.57860 2012 8 1 56140 0.1149 0.3537 -0.57826 2012 8 2 56141 0.1151 0.3535 -0.57810 2012 8 3 56142 0.1154 0.3532 -0.57816 2012 8 4 56143 0.1156 0.3530 -0.57835 2012 8 5 56144 0.1159 0.3527 -0.57855 2012 8 6 56145 0.1161 0.3525 -0.57871 2012 8 7 56146 0.1163 0.3522 -0.57876 2012 8 8 56147 0.1165 0.3520 -0.57867 2012 8 9 56148 0.1166 0.3517 -0.57842 2012 8 10 56149 0.1168 0.3514 -0.57807 2012 8 11 56150 0.1170 0.3511 -0.57767 2012 8 12 56151 0.1171 0.3509 -0.57725 2012 8 13 56152 0.1173 0.3506 -0.57684 2012 8 14 56153 0.1174 0.3503 -0.57646 2012 8 15 56154 0.1175 0.3500 -0.57625 2012 8 16 56155 0.1176 0.3497 -0.57619 2012 8 17 56156 0.1177 0.3494 -0.57625 2012 8 18 56157 0.1178 0.3492 -0.57647 2012 8 19 56158 0.1178 0.3489 -0.57686 2012 8 20 56159 0.1179 0.3486 -0.57735 2012 8 21 56160 0.1179 0.3483 -0.57783 2012 8 22 56161 0.1180 0.3480 -0.57824 2012 8 23 56162 0.1180 0.3477 -0.57852 2012 8 24 56163 0.1180 0.3474 -0.57869 2012 8 25 56164 0.1180 0.3471 -0.57882 2012 8 26 56165 0.1180 0.3468 -0.57889 2012 8 27 56166 0.1180 0.3465 -0.57902 2012 8 28 56167 0.1179 0.3462 -0.57923 2012 8 29 56168 0.1179 0.3459 -0.57954 2012 8 30 56169 0.1178 0.3456 -0.57996 2012 8 31 56170 0.1178 0.3454 -0.58044 2012 9 1 56171 0.1177 0.3451 -0.58095 2012 9 2 56172 0.1176 0.3448 -0.58146 2012 9 3 56173 0.1175 0.3445 -0.58196 2012 9 4 56174 0.1174 0.3442 -0.58247 2012 9 5 56175 0.1172 0.3439 -0.58288 2012 9 6 56176 0.1171 0.3436 -0.58326 2012 9 7 56177 0.1170 0.3434 -0.58357 2012 9 8 56178 0.1168 0.3431 -0.58379 2012 9 9 56179 0.1166 0.3428 -0.58398 2012 9 10 56180 0.1164 0.3426 -0.58420 2012 9 11 56181 0.1162 0.3423 -0.58446 2012 9 12 56182 0.1160 0.3420 -0.58481 2012 9 13 56183 0.1158 0.3418 -0.58529 2012 9 14 56184 0.1156 0.3415 -0.58593 2012 9 15 56185 0.1154 0.3413 -0.58675 2012 9 16 56186 0.1151 0.3410 -0.58770 2012 9 17 56187 0.1149 0.3408 -0.58875 2012 9 18 56188 0.1146 0.3406 -0.58976 2012 9 19 56189 0.1143 0.3403 -0.59067 2012 9 20 56190 0.1140 0.3401 -0.59144 2012 9 21 56191 0.1137 0.3399 -0.59212 2012 9 22 56192 0.1134 0.3397 -0.59275 2012 9 23 56193 0.1131 0.3395 -0.59341 2012 9 24 56194 0.1128 0.3393 -0.59416 2012 9 25 56195 0.1125 0.3391 -0.59499 2012 9 26 56196 0.1121 0.3389 -0.59596 2012 9 27 56197 0.1118 0.3387 -0.59704 2012 9 28 56198 0.1114 0.3385 -0.59823 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) 55812 -79.08 0.30 -10.55 0.05 55813 -79.19 0.30 -10.49 0.05 55814 -79.20 0.30 -10.38 0.05 55815 -79.15 0.30 -10.20 0.05 55816 -79.13 0.30 -9.98 0.05 55817 -79.17 0.30 -9.86 0.04 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55812 -0.089 0.119 0.295 0.050 55813 -0.148 0.119 0.237 0.050 55814 -0.176 0.119 0.198 0.050 55815 -0.170 0.119 0.182 0.050 55816 -0.147 0.119 0.196 0.050 55817 -0.105 0.119 0.214 0.040 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).