********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 20 October 2011 Vol. XXIV No. 042 ______________________________________________________________________ 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 10 14 55848 0.18559 .00009 0.35685 .00009 -0.336752 0.000017 11 10 15 55849 0.18513 .00009 0.35499 .00009 -0.337535 0.000016 11 10 16 55850 0.18466 .00010 0.35301 .00010 -0.338145 0.000013 11 10 17 55851 0.18449 .00010 0.35119 .00009 -0.338648 0.000010 11 10 18 55852 0.18476 .00010 0.34961 .00009 -0.339140 0.000009 11 10 19 55853 0.18541 .00010 0.34823 .00009 -0.339695 0.000008 11 10 20 55854 0.18616 .00010 0.34694 .00009 -0.340388 0.000055 _______________________________________________________________________ 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 = 0.0839 + 0.1065 cos A - 0.0435 sin A - 0.0014 cos C + 0.0516 sin C y = 0.3323 - 0.0354 cos A - 0.1006 sin A + 0.0516 cos C + 0.0014 sin C UT1-UTC = -0.3806 - 0.00077 (MJD - 55862) - (UT2-UT1) where A = 2*pi*(MJD-55854)/365.25 and C = 2*pi*(MJD-55854)/435. TAI-UTC(MJD 55855) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55854)**0.80 S t = 0.00025 (MJD-55854)**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 10 21 55855 0.1866 0.3458 -0.34129 2011 10 22 55856 0.1869 0.3447 -0.34242 2011 10 23 55857 0.1870 0.3435 -0.34378 2011 10 24 55858 0.1870 0.3422 -0.34531 2011 10 25 55859 0.1868 0.3409 -0.34689 2011 10 26 55860 0.1867 0.3396 -0.34839 2011 10 27 55861 0.1865 0.3383 -0.34970 2011 10 28 55862 0.1862 0.3371 -0.35079 2011 10 29 55863 0.1860 0.3359 -0.35167 2011 10 30 55864 0.1856 0.3347 -0.35244 2011 10 31 55865 0.1853 0.3335 -0.35317 2011 11 1 55866 0.1848 0.3323 -0.35395 2011 11 2 55867 0.1844 0.3311 -0.35482 2011 11 3 55868 0.1839 0.3300 -0.35578 2011 11 4 55869 0.1834 0.3288 -0.35685 2011 11 5 55870 0.1829 0.3276 -0.35802 2011 11 6 55871 0.1823 0.3265 -0.35927 2011 11 7 55872 0.1818 0.3253 -0.36053 2011 11 8 55873 0.1812 0.3242 -0.36177 2011 11 9 55874 0.1806 0.3231 -0.36294 2011 11 10 55875 0.1799 0.3220 -0.36401 2011 11 11 55876 0.1793 0.3209 -0.36499 2011 11 12 55877 0.1786 0.3198 -0.36590 2011 11 13 55878 0.1779 0.3187 -0.36676 2011 11 14 55879 0.1772 0.3177 -0.36762 2011 11 15 55880 0.1765 0.3166 -0.36854 2011 11 16 55881 0.1757 0.3156 -0.36957 2011 11 17 55882 0.1750 0.3146 -0.37074 2011 11 18 55883 0.1742 0.3135 -0.37209 2011 11 19 55884 0.1734 0.3125 -0.37362 2011 11 20 55885 0.1726 0.3116 -0.37529 2011 11 21 55886 0.1718 0.3106 -0.37701 2011 11 22 55887 0.1709 0.3096 -0.37869 2011 11 23 55888 0.1701 0.3087 -0.38024 2011 11 24 55889 0.1692 0.3077 -0.38159 2011 11 25 55890 0.1683 0.3068 -0.38273 2011 11 26 55891 0.1675 0.3059 -0.38372 2011 11 27 55892 0.1666 0.3050 -0.38464 2011 11 28 55893 0.1656 0.3041 -0.38558 2011 11 29 55894 0.1647 0.3033 -0.38658 2011 11 30 55895 0.1638 0.3024 -0.38768 2011 12 1 55896 0.1628 0.3016 -0.38886 2011 12 2 55897 0.1619 0.3008 -0.39008 2011 12 3 55898 0.1609 0.3000 -0.39130 2011 12 4 55899 0.1599 0.2992 -0.39247 2011 12 5 55900 0.1589 0.2985 -0.39357 2011 12 6 55901 0.1579 0.2977 -0.39455 2011 12 7 55902 0.1569 0.2970 -0.39542 2011 12 8 55903 0.1559 0.2963 -0.39617 2011 12 9 55904 0.1549 0.2956 -0.39682 2011 12 10 55905 0.1538 0.2949 -0.39741 2011 12 11 55906 0.1528 0.2942 -0.39799 2011 12 12 55907 0.1518 0.2936 -0.39860 2011 12 13 55908 0.1507 0.2929 -0.39931 2011 12 14 55909 0.1496 0.2923 -0.40015 2011 12 15 55910 0.1486 0.2917 -0.40117 2011 12 16 55911 0.1475 0.2911 -0.40237 2011 12 17 55912 0.1464 0.2906 -0.40370 2011 12 18 55913 0.1453 0.2900 -0.40511 2011 12 19 55914 0.1442 0.2895 -0.40651 2011 12 20 55915 0.1431 0.2890 -0.40782 2011 12 21 55916 0.1420 0.2885 -0.40896 2011 12 22 55917 0.1409 0.2880 -0.40993 2011 12 23 55918 0.1398 0.2876 -0.41074 2011 12 24 55919 0.1387 0.2871 -0.41146 2011 12 25 55920 0.1376 0.2867 -0.41217 2011 12 26 55921 0.1365 0.2863 -0.41296 2011 12 27 55922 0.1354 0.2859 -0.41385 2011 12 28 55923 0.1343 0.2856 -0.41485 2011 12 29 55924 0.1331 0.2852 -0.41593 2011 12 30 55925 0.1320 0.2849 -0.41702 2011 12 31 55926 0.1309 0.2846 -0.41809 2012 1 1 55927 0.1298 0.2843 -0.41909 2012 1 2 55928 0.1287 0.2840 -0.42000 2012 1 3 55929 0.1275 0.2837 -0.42079 2012 1 4 55930 0.1264 0.2835 -0.42147 2012 1 5 55931 0.1253 0.2833 -0.42205 2012 1 6 55932 0.1242 0.2831 -0.42257 2012 1 7 55933 0.1231 0.2829 -0.42306 2012 1 8 55934 0.1220 0.2827 -0.42358 2012 1 9 55935 0.1208 0.2826 -0.42421 2012 1 10 55936 0.1197 0.2824 -0.42499 2012 1 11 55937 0.1186 0.2823 -0.42595 2012 1 12 55938 0.1175 0.2822 -0.42711 2012 1 13 55939 0.1164 0.2821 -0.42843 2012 1 14 55940 0.1153 0.2821 -0.42983 2012 1 15 55941 0.1143 0.2820 -0.43123 2012 1 16 55942 0.1132 0.2820 -0.43255 2012 1 17 55943 0.1121 0.2820 -0.43372 2012 1 18 55944 0.1110 0.2820 -0.43473 2012 1 19 55945 0.1100 0.2820 -0.43560 2012 1 20 55946 0.1089 0.2820 -0.43638 2012 1 21 55947 0.1078 0.2821 -0.43714 2012 1 22 55948 0.1068 0.2822 -0.43798 2012 1 23 55949 0.1058 0.2822 -0.43892 2012 1 24 55950 0.1047 0.2823 -0.44000 2012 1 25 55951 0.1037 0.2825 -0.44119 2012 1 26 55952 0.1027 0.2826 -0.44243 2012 1 27 55953 0.1017 0.2828 -0.44368 2012 1 28 55954 0.1007 0.2829 -0.44488 2012 1 29 55955 0.0997 0.2831 -0.44598 2012 1 30 55956 0.0987 0.2833 -0.44698 2012 1 31 55957 0.0977 0.2835 -0.44785 2012 2 1 55958 0.0968 0.2837 -0.44861 2012 2 2 55959 0.0958 0.2840 -0.44929 2012 2 3 55960 0.0949 0.2842 -0.44992 2012 2 4 55961 0.0939 0.2845 -0.45056 2012 2 5 55962 0.0930 0.2848 -0.45126 2012 2 6 55963 0.0921 0.2851 -0.45210 2012 2 7 55964 0.0912 0.2854 -0.45312 2012 2 8 55965 0.0903 0.2858 -0.45436 2012 2 9 55966 0.0894 0.2861 -0.45579 2012 2 10 55967 0.0885 0.2865 -0.45736 2012 2 11 55968 0.0877 0.2868 -0.45895 2012 2 12 55969 0.0868 0.2872 -0.46049 2012 2 13 55970 0.0860 0.2876 -0.46187 2012 2 14 55971 0.0852 0.2880 -0.46308 2012 2 15 55972 0.0844 0.2884 -0.46412 2012 2 16 55973 0.0836 0.2889 -0.46505 2012 2 17 55974 0.0828 0.2893 -0.46594 2012 2 18 55975 0.0820 0.2898 -0.46687 2012 2 19 55976 0.0813 0.2902 -0.46791 2012 2 20 55977 0.0805 0.2907 -0.46907 2012 2 21 55978 0.0798 0.2912 -0.47036 2012 2 22 55979 0.0791 0.2917 -0.47174 2012 2 23 55980 0.0784 0.2922 -0.47315 2012 2 24 55981 0.0777 0.2928 -0.47455 2012 2 25 55982 0.0771 0.2933 -0.47589 2012 2 26 55983 0.0764 0.2938 -0.47713 2012 2 27 55984 0.0758 0.2944 -0.47825 2012 2 28 55985 0.0751 0.2949 -0.47926 2012 2 29 55986 0.0745 0.2955 -0.48018 2012 3 1 55987 0.0739 0.2961 -0.48104 2012 3 2 55988 0.0734 0.2967 -0.48189 2012 3 3 55989 0.0728 0.2973 -0.48279 2012 3 4 55990 0.0722 0.2979 -0.48380 2012 3 5 55991 0.0717 0.2985 -0.48498 2012 3 6 55992 0.0712 0.2991 -0.48638 2012 3 7 55993 0.0707 0.2997 -0.48799 2012 3 8 55994 0.0702 0.3004 -0.48978 2012 3 9 55995 0.0697 0.3010 -0.49167 2012 3 10 55996 0.0693 0.3017 -0.49354 2012 3 11 55997 0.0688 0.3023 -0.49528 2012 3 12 55998 0.0684 0.3030 -0.49683 2012 3 13 55999 0.0680 0.3037 -0.49818 2012 3 14 56000 0.0676 0.3043 -0.49938 2012 3 15 56001 0.0673 0.3050 -0.50051 2012 3 16 56002 0.0669 0.3057 -0.50164 2012 3 17 56003 0.0666 0.3064 -0.50284 2012 3 18 56004 0.0662 0.3071 -0.50414 2012 3 19 56005 0.0659 0.3078 -0.50556 2012 3 20 56006 0.0656 0.3085 -0.50706 2012 3 21 56007 0.0653 0.3092 -0.50861 2012 3 22 56008 0.0651 0.3099 -0.51015 2012 3 23 56009 0.0648 0.3106 -0.51165 2012 3 24 56010 0.0646 0.3113 -0.51306 2012 3 25 56011 0.0644 0.3120 -0.51436 2012 3 26 56012 0.0642 0.3127 -0.51554 2012 3 27 56013 0.0640 0.3134 -0.51662 2012 3 28 56014 0.0639 0.3142 -0.51762 2012 3 29 56015 0.0637 0.3149 -0.51859 2012 3 30 56016 0.0636 0.3156 -0.51958 2012 3 31 56017 0.0635 0.3163 -0.52064 2012 4 1 56018 0.0634 0.3171 -0.52183 2012 4 2 56019 0.0633 0.3178 -0.52320 2012 4 3 56020 0.0632 0.3185 -0.52478 2012 4 4 56021 0.0632 0.3192 -0.52655 2012 4 5 56022 0.0631 0.3200 -0.52847 2012 4 6 56023 0.0631 0.3207 -0.53044 2012 4 7 56024 0.0631 0.3214 -0.53233 2012 4 8 56025 0.0631 0.3221 -0.53407 2012 4 9 56026 0.0631 0.3229 -0.53559 2012 4 10 56027 0.0632 0.3236 -0.53693 2012 4 11 56028 0.0632 0.3243 -0.53816 2012 4 12 56029 0.0633 0.3250 -0.53936 2012 4 13 56030 0.0634 0.3257 -0.54060 2012 4 14 56031 0.0635 0.3264 -0.54193 2012 4 15 56032 0.0636 0.3271 -0.54336 2012 4 16 56033 0.0637 0.3279 -0.54488 2012 4 17 56034 0.0639 0.3286 -0.54645 2012 4 18 56035 0.0640 0.3293 -0.54804 2012 4 19 56036 0.0642 0.3299 -0.54960 2012 4 20 56037 0.0644 0.3306 -0.55111 2012 4 21 56038 0.0646 0.3313 -0.55255 2012 4 22 56039 0.0648 0.3320 -0.55390 2012 4 23 56040 0.0650 0.3327 -0.55520 2012 4 24 56041 0.0653 0.3334 -0.55645 2012 4 25 56042 0.0655 0.3340 -0.55771 2012 4 26 56043 0.0658 0.3347 -0.55902 2012 4 27 56044 0.0661 0.3354 -0.56040 2012 4 28 56045 0.0663 0.3360 -0.56189 2012 4 29 56046 0.0666 0.3367 -0.56351 2012 4 30 56047 0.0670 0.3373 -0.56528 2012 5 1 56048 0.0673 0.3379 -0.56717 2012 5 2 56049 0.0676 0.3386 -0.56915 2012 5 3 56050 0.0680 0.3392 -0.57114 2012 5 4 56051 0.0683 0.3398 -0.57303 2012 5 5 56052 0.0687 0.3404 -0.57473 2012 5 6 56053 0.0691 0.3410 -0.57615 2012 5 7 56054 0.0695 0.3416 -0.57729 2012 5 8 56055 0.0699 0.3422 -0.57820 2012 5 9 56056 0.0703 0.3428 -0.57896 2012 5 10 56057 0.0707 0.3433 -0.57969 2012 5 11 56058 0.0711 0.3439 -0.58045 2012 5 12 56059 0.0716 0.3445 -0.58127 2012 5 13 56060 0.0720 0.3450 -0.58213 2012 5 14 56061 0.0725 0.3456 -0.58300 2012 5 15 56062 0.0729 0.3461 -0.58385 2012 5 16 56063 0.0734 0.3466 -0.58464 2012 5 17 56064 0.0739 0.3471 -0.58536 2012 5 18 56065 0.0744 0.3476 -0.58597 2012 5 19 56066 0.0749 0.3481 -0.58648 2012 5 20 56067 0.0754 0.3486 -0.58688 2012 5 21 56068 0.0759 0.3491 -0.58720 2012 5 22 56069 0.0764 0.3496 -0.58748 2012 5 23 56070 0.0770 0.3500 -0.58778 2012 5 24 56071 0.0775 0.3505 -0.58813 2012 5 25 56072 0.0780 0.3509 -0.58856 2012 5 26 56073 0.0786 0.3513 -0.58909 2012 5 27 56074 0.0791 0.3518 -0.58975 2012 5 28 56075 0.0797 0.3522 -0.59056 2012 5 29 56076 0.0803 0.3526 -0.59148 2012 5 30 56077 0.0808 0.3530 -0.59244 2012 5 31 56078 0.0814 0.3533 -0.59337 2012 6 1 56079 0.0820 0.3537 -0.59421 2012 6 2 56080 0.0825 0.3541 -0.59481 2012 6 3 56081 0.0831 0.3544 -0.59517 2012 6 4 56082 0.0837 0.3548 -0.59534 2012 6 5 56083 0.0843 0.3551 -0.59541 2012 6 6 56084 0.0849 0.3554 -0.59539 2012 6 7 56085 0.0855 0.3557 -0.59537 2012 6 8 56086 0.0861 0.3560 -0.59545 2012 6 9 56087 0.0867 0.3563 -0.59564 2012 6 10 56088 0.0873 0.3566 -0.59593 2012 6 11 56089 0.0879 0.3568 -0.59621 2012 6 12 56090 0.0885 0.3571 -0.59643 2012 6 13 56091 0.0891 0.3573 -0.59655 2012 6 14 56092 0.0897 0.3576 -0.59660 2012 6 15 56093 0.0903 0.3578 -0.59663 2012 6 16 56094 0.0909 0.3580 -0.59653 2012 6 17 56095 0.0915 0.3582 -0.59631 2012 6 18 56096 0.0921 0.3584 -0.59600 2012 6 19 56097 0.0928 0.3586 -0.59562 2012 6 20 56098 0.0934 0.3588 -0.59529 2012 6 21 56099 0.0940 0.3589 -0.59504 2012 6 22 56100 0.0946 0.3591 -0.59487 2012 6 23 56101 0.0952 0.3592 -0.59480 2012 6 24 56102 0.0958 0.3594 -0.59479 2012 6 25 56103 0.0964 0.3595 -0.59489 2012 6 26 56104 0.0970 0.3596 -0.59506 2012 6 27 56105 0.0976 0.3597 -0.59521 2012 6 28 56106 0.0981 0.3598 -0.59536 2012 6 29 56107 0.0987 0.3599 -0.59543 2012 6 30 56108 0.0993 0.3599 -0.59539 2012 7 1 56109 0.0999 0.3600 -0.59525 2012 7 2 56110 0.1005 0.3600 -0.59507 2012 7 3 56111 0.1010 0.3601 -0.59488 2012 7 4 56112 0.1016 0.3601 -0.59475 2012 7 5 56113 0.1022 0.3601 -0.59466 2012 7 6 56114 0.1027 0.3601 -0.59465 2012 7 7 56115 0.1033 0.3601 -0.59474 2012 7 8 56116 0.1038 0.3601 -0.59484 2012 7 9 56117 0.1044 0.3601 -0.59488 2012 7 10 56118 0.1049 0.3601 -0.59481 2012 7 11 56119 0.1054 0.3601 -0.59461 2012 7 12 56120 0.1060 0.3600 -0.59427 2012 7 13 56121 0.1065 0.3600 -0.59380 2012 7 14 56122 0.1070 0.3599 -0.59321 2012 7 15 56123 0.1075 0.3598 -0.59252 2012 7 16 56124 0.1080 0.3598 -0.59173 2012 7 17 56125 0.1085 0.3597 -0.59098 2012 7 18 56126 0.1090 0.3596 -0.59029 2012 7 19 56127 0.1094 0.3595 -0.58973 2012 7 20 56128 0.1099 0.3594 -0.58942 2012 7 21 56129 0.1104 0.3592 -0.58929 2012 7 22 56130 0.1108 0.3591 -0.58931 2012 7 23 56131 0.1113 0.3590 -0.58942 2012 7 24 56132 0.1117 0.3588 -0.58959 2012 7 25 56133 0.1121 0.3587 -0.58976 2012 7 26 56134 0.1125 0.3585 -0.58984 2012 7 27 56135 0.1130 0.3584 -0.58976 2012 7 28 56136 0.1134 0.3582 -0.58955 2012 7 29 56137 0.1137 0.3580 -0.58923 2012 7 30 56138 0.1141 0.3579 -0.58885 2012 7 31 56139 0.1145 0.3577 -0.58847 2012 8 1 56140 0.1149 0.3575 -0.58818 2012 8 2 56141 0.1152 0.3573 -0.58796 2012 8 3 56142 0.1156 0.3571 -0.58781 2012 8 4 56143 0.1159 0.3569 -0.58778 2012 8 5 56144 0.1162 0.3567 -0.58781 2012 8 6 56145 0.1165 0.3564 -0.58789 2012 8 7 56146 0.1168 0.3562 -0.58790 2012 8 8 56147 0.1171 0.3560 -0.58783 2012 8 9 56148 0.1174 0.3558 -0.58765 2012 8 10 56149 0.1177 0.3555 -0.58733 2012 8 11 56150 0.1179 0.3553 -0.58694 2012 8 12 56151 0.1182 0.3550 -0.58646 2012 8 13 56152 0.1184 0.3548 -0.58591 2012 8 14 56153 0.1186 0.3545 -0.58538 2012 8 15 56154 0.1188 0.3543 -0.58495 2012 8 16 56155 0.1190 0.3540 -0.58465 2012 8 17 56156 0.1192 0.3537 -0.58455 2012 8 18 56157 0.1194 0.3535 -0.58466 2012 8 19 56158 0.1196 0.3532 -0.58492 2012 8 20 56159 0.1197 0.3529 -0.58529 2012 8 21 56160 0.1199 0.3527 -0.58569 2012 8 22 56161 0.1200 0.3524 -0.58607 2012 8 23 56162 0.1202 0.3521 -0.58630 2012 8 24 56163 0.1203 0.3518 -0.58636 2012 8 25 56164 0.1204 0.3516 -0.58635 2012 8 26 56165 0.1205 0.3513 -0.58622 2012 8 27 56166 0.1205 0.3510 -0.58618 2012 8 28 56167 0.1206 0.3507 -0.58624 2012 8 29 56168 0.1207 0.3504 -0.58639 2012 8 30 56169 0.1207 0.3502 -0.58662 2012 8 31 56170 0.1207 0.3499 -0.58693 2012 9 1 56171 0.1208 0.3496 -0.58731 2012 9 2 56172 0.1208 0.3493 -0.58770 2012 9 3 56173 0.1208 0.3490 -0.58802 2012 9 4 56174 0.1207 0.3488 -0.58819 2012 9 5 56175 0.1207 0.3485 -0.58827 2012 9 6 56176 0.1207 0.3482 -0.58831 2012 9 7 56177 0.1206 0.3479 -0.58825 2012 9 8 56178 0.1206 0.3477 -0.58813 2012 9 9 56179 0.1205 0.3474 -0.58794 2012 9 10 56180 0.1204 0.3471 -0.58781 2012 9 11 56181 0.1203 0.3468 -0.58782 2012 9 12 56182 0.1202 0.3466 -0.58797 2012 9 13 56183 0.1201 0.3463 -0.58835 2012 9 14 56184 0.1200 0.3461 -0.58902 2012 9 15 56185 0.1199 0.3458 -0.58992 2012 9 16 56186 0.1197 0.3455 -0.59095 2012 9 17 56187 0.1195 0.3453 -0.59204 2012 9 18 56188 0.1194 0.3450 -0.59306 2012 9 19 56189 0.1192 0.3448 -0.59394 2012 9 20 56190 0.1190 0.3446 -0.59463 2012 9 21 56191 0.1188 0.3443 -0.59520 2012 9 22 56192 0.1186 0.3441 -0.59571 2012 9 23 56193 0.1184 0.3439 -0.59625 2012 9 24 56194 0.1182 0.3436 -0.59686 2012 9 25 56195 0.1179 0.3434 -0.59755 2012 9 26 56196 0.1177 0.3432 -0.59843 2012 9 27 56197 0.1174 0.3430 -0.59940 2012 9 28 56198 0.1172 0.3428 -0.60039 2012 9 29 56199 0.1169 0.3426 -0.60137 2012 9 30 56200 0.1166 0.3424 -0.60232 2012 10 1 56201 0.1163 0.3422 -0.60321 2012 10 2 56202 0.1160 0.3421 -0.60398 2012 10 3 56203 0.1157 0.3419 -0.60464 2012 10 4 56204 0.1154 0.3417 -0.60519 2012 10 5 56205 0.1151 0.3416 -0.60571 2012 10 6 56206 0.1147 0.3414 -0.60626 2012 10 7 56207 0.1144 0.3413 -0.60682 2012 10 8 56208 0.1140 0.3411 -0.60748 2012 10 9 56209 0.1137 0.3410 -0.60823 2012 10 10 56210 0.1133 0.3409 -0.60912 2012 10 11 56211 0.1129 0.3408 -0.61014 2012 10 12 56212 0.1126 0.3407 -0.61129 2012 10 13 56213 0.1122 0.3406 -0.61257 2012 10 14 56214 0.1118 0.3405 -0.61395 2012 10 15 56215 0.1114 0.3404 -0.61540 2012 10 16 56216 0.1110 0.3403 -0.61685 2012 10 17 56217 0.1106 0.3402 -0.61819 2012 10 18 56218 0.1102 0.3402 -0.61943 2012 10 19 56219 0.1098 0.3401 -0.62058 These predictions are based on all announced leap seconds. 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).