********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 18 August 2011 Vol. XXIV No. 033 ______________________________________________________________________ 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(BIPM) = 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 8 12 55785 0.12973 .00009 0.43956 .00009 -0.293500 0.000016 11 8 13 55786 0.13153 .00009 0.43906 .00009 -0.293494 0.000017 11 8 14 55787 0.13315 .00009 0.43844 .00009 -0.293601 0.000014 11 8 15 55788 0.13484 .00009 0.43750 .00009 -0.293741 0.000013 11 8 16 55789 0.13669 .00009 0.43666 .00009 -0.293948 0.000012 11 8 17 55790 0.13855 .00009 0.43601 .00009 -0.294209 0.000065 11 8 18 55791 0.14041 .00009 0.43541 .00009 -0.294444 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 = 0.0896 + 0.0815 cos A + 0.0808 sin A - 0.0321 cos C + 0.0284 sin C y = 0.3312 + 0.0770 cos A - 0.0712 sin A + 0.0284 cos C + 0.0321 sin C UT1-UTC = -0.3297 - 0.00071 (MJD - 55799) - (UT2-UT1) where A = 2*pi*(MJD-55791)/365.25 and C = 2*pi*(MJD-55791)/435. TAI-UTC(MJD 55792) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55791)**0.80 S t = 0.00025 (MJD-55791)**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 8 19 55792 0.1420 0.4348 -0.29453 2011 8 20 55793 0.1437 0.4341 -0.29447 2011 8 21 55794 0.1452 0.4334 -0.29429 2011 8 22 55795 0.1466 0.4326 -0.29403 2011 8 23 55796 0.1480 0.4318 -0.29372 2011 8 24 55797 0.1493 0.4309 -0.29342 2011 8 25 55798 0.1506 0.4300 -0.29320 2011 8 26 55799 0.1519 0.4290 -0.29314 2011 8 27 55800 0.1531 0.4281 -0.29331 2011 8 28 55801 0.1543 0.4272 -0.29373 2011 8 29 55802 0.1555 0.4262 -0.29441 2011 8 30 55803 0.1566 0.4252 -0.29527 2011 8 31 55804 0.1577 0.4242 -0.29620 2011 9 1 55805 0.1588 0.4231 -0.29704 2011 9 2 55806 0.1599 0.4221 -0.29770 2011 9 3 55807 0.1609 0.4210 -0.29815 2011 9 4 55808 0.1619 0.4199 -0.29844 2011 9 5 55809 0.1629 0.4188 -0.29864 2011 9 6 55810 0.1639 0.4177 -0.29884 2011 9 7 55811 0.1648 0.4166 -0.29911 2011 9 8 55812 0.1657 0.4154 -0.29949 2011 9 9 55813 0.1666 0.4142 -0.29998 2011 9 10 55814 0.1675 0.4131 -0.30060 2011 9 11 55815 0.1683 0.4119 -0.30134 2011 9 12 55816 0.1691 0.4107 -0.30216 2011 9 13 55817 0.1699 0.4095 -0.30300 2011 9 14 55818 0.1707 0.4083 -0.30382 2011 9 15 55819 0.1714 0.4070 -0.30457 2011 9 16 55820 0.1722 0.4058 -0.30522 2011 9 17 55821 0.1729 0.4045 -0.30577 2011 9 18 55822 0.1735 0.4033 -0.30623 2011 9 19 55823 0.1742 0.4020 -0.30664 2011 9 20 55824 0.1748 0.4007 -0.30703 2011 9 21 55825 0.1754 0.3994 -0.30747 2011 9 22 55826 0.1760 0.3982 -0.30803 2011 9 23 55827 0.1765 0.3969 -0.30878 2011 9 24 55828 0.1771 0.3955 -0.30977 2011 9 25 55829 0.1776 0.3942 -0.31102 2011 9 26 55830 0.1781 0.3929 -0.31249 2011 9 27 55831 0.1785 0.3916 -0.31408 2011 9 28 55832 0.1790 0.3903 -0.31565 2011 9 29 55833 0.1794 0.3889 -0.31708 2011 9 30 55834 0.1797 0.3876 -0.31830 2011 10 1 55835 0.1801 0.3862 -0.31930 2011 10 2 55836 0.1804 0.3849 -0.32014 2011 10 3 55837 0.1808 0.3835 -0.32093 2011 10 4 55838 0.1810 0.3822 -0.32173 2011 10 5 55839 0.1813 0.3808 -0.32263 2011 10 6 55840 0.1816 0.3795 -0.32364 2011 10 7 55841 0.1818 0.3781 -0.32478 2011 10 8 55842 0.1820 0.3767 -0.32603 2011 10 9 55843 0.1821 0.3754 -0.32735 2011 10 10 55844 0.1823 0.3740 -0.32869 2011 10 11 55845 0.1824 0.3726 -0.33001 2011 10 12 55846 0.1825 0.3713 -0.33126 2011 10 13 55847 0.1826 0.3699 -0.33241 2011 10 14 55848 0.1826 0.3685 -0.33346 2011 10 15 55849 0.1826 0.3672 -0.33442 2011 10 16 55850 0.1826 0.3658 -0.33532 2011 10 17 55851 0.1826 0.3644 -0.33620 2011 10 18 55852 0.1826 0.3631 -0.33711 2011 10 19 55853 0.1825 0.3617 -0.33810 2011 10 20 55854 0.1824 0.3604 -0.33924 2011 10 21 55855 0.1823 0.3590 -0.34057 2011 10 22 55856 0.1822 0.3577 -0.34213 2011 10 23 55857 0.1820 0.3563 -0.34391 2011 10 24 55858 0.1818 0.3550 -0.34583 2011 10 25 55859 0.1816 0.3537 -0.34779 2011 10 26 55860 0.1814 0.3523 -0.34966 2011 10 27 55861 0.1812 0.3510 -0.35135 2011 10 28 55862 0.1809 0.3497 -0.35280 2011 10 29 55863 0.1806 0.3484 -0.35404 2011 10 30 55864 0.1803 0.3471 -0.35514 2011 10 31 55865 0.1800 0.3458 -0.35620 2011 11 1 55866 0.1796 0.3445 -0.35730 2011 11 2 55867 0.1793 0.3432 -0.35848 2011 11 3 55868 0.1789 0.3419 -0.35974 2011 11 4 55869 0.1785 0.3406 -0.36107 2011 11 5 55870 0.1780 0.3394 -0.36244 2011 11 6 55871 0.1776 0.3381 -0.36382 2011 11 7 55872 0.1771 0.3369 -0.36515 2011 11 8 55873 0.1766 0.3357 -0.36641 2011 11 9 55874 0.1761 0.3344 -0.36758 2011 11 10 55875 0.1756 0.3332 -0.36862 2011 11 11 55876 0.1750 0.3320 -0.36954 2011 11 12 55877 0.1745 0.3308 -0.37037 2011 11 13 55878 0.1739 0.3296 -0.37114 2011 11 14 55879 0.1733 0.3284 -0.37189 2011 11 15 55880 0.1727 0.3273 -0.37269 2011 11 16 55881 0.1720 0.3261 -0.37358 2011 11 17 55882 0.1714 0.3250 -0.37462 2011 11 18 55883 0.1707 0.3239 -0.37584 2011 11 19 55884 0.1700 0.3227 -0.37724 2011 11 20 55885 0.1693 0.3216 -0.37878 2011 11 21 55886 0.1686 0.3206 -0.38040 2011 11 22 55887 0.1679 0.3195 -0.38200 2011 11 23 55888 0.1671 0.3184 -0.38346 2011 11 24 55889 0.1663 0.3174 -0.38472 2011 11 25 55890 0.1656 0.3163 -0.38578 2011 11 26 55891 0.1648 0.3153 -0.38668 2011 11 27 55892 0.1640 0.3143 -0.38750 2011 11 28 55893 0.1631 0.3133 -0.38834 2011 11 29 55894 0.1623 0.3123 -0.38926 2011 11 30 55895 0.1615 0.3113 -0.39027 2011 12 1 55896 0.1606 0.3104 -0.39136 2011 12 2 55897 0.1597 0.3094 -0.39249 2011 12 3 55898 0.1588 0.3085 -0.39362 2011 12 4 55899 0.1579 0.3076 -0.39470 2011 12 5 55900 0.1570 0.3067 -0.39576 2011 12 6 55901 0.1561 0.3058 -0.39672 2011 12 7 55902 0.1552 0.3050 -0.39755 2011 12 8 55903 0.1542 0.3041 -0.39827 2011 12 9 55904 0.1533 0.3033 -0.39889 2011 12 10 55905 0.1523 0.3025 -0.39943 2011 12 11 55906 0.1513 0.3017 -0.39996 2011 12 12 55907 0.1504 0.3009 -0.40053 2011 12 13 55908 0.1494 0.3001 -0.40118 2011 12 14 55909 0.1484 0.2994 -0.40198 2011 12 15 55910 0.1474 0.2987 -0.40294 2011 12 16 55911 0.1464 0.2980 -0.40407 2011 12 17 55912 0.1453 0.2973 -0.40534 2011 12 18 55913 0.1443 0.2966 -0.40668 2011 12 19 55914 0.1433 0.2959 -0.40801 2011 12 20 55915 0.1422 0.2953 -0.40925 2011 12 21 55916 0.1412 0.2946 -0.41032 2011 12 22 55917 0.1401 0.2940 -0.41122 2011 12 23 55918 0.1391 0.2934 -0.41195 2011 12 24 55919 0.1380 0.2929 -0.41260 2011 12 25 55920 0.1369 0.2923 -0.41324 2011 12 26 55921 0.1359 0.2918 -0.41395 2011 12 27 55922 0.1348 0.2912 -0.41477 2011 12 28 55923 0.1337 0.2907 -0.41570 2011 12 29 55924 0.1326 0.2902 -0.41670 2011 12 30 55925 0.1315 0.2898 -0.41771 2011 12 31 55926 0.1305 0.2893 -0.41870 2012 1 1 55927 0.1294 0.2889 -0.41962 2012 1 2 55928 0.1283 0.2885 -0.42044 2012 1 3 55929 0.1272 0.2881 -0.42114 2012 1 4 55930 0.1261 0.2877 -0.42172 2012 1 5 55931 0.1250 0.2873 -0.42219 2012 1 6 55932 0.1239 0.2870 -0.42259 2012 1 7 55933 0.1228 0.2867 -0.42295 2012 1 8 55934 0.1217 0.2864 -0.42334 2012 1 9 55935 0.1206 0.2861 -0.42382 2012 1 10 55936 0.1195 0.2858 -0.42444 2012 1 11 55937 0.1184 0.2855 -0.42524 2012 1 12 55938 0.1173 0.2853 -0.42623 2012 1 13 55939 0.1162 0.2851 -0.42736 2012 1 14 55940 0.1151 0.2849 -0.42858 2012 1 15 55941 0.1140 0.2847 -0.42980 2012 1 16 55942 0.1130 0.2845 -0.43093 2012 1 17 55943 0.1119 0.2844 -0.43191 2012 1 18 55944 0.1108 0.2842 -0.43272 2012 1 19 55945 0.1097 0.2841 -0.43337 2012 1 20 55946 0.1087 0.2840 -0.43393 2012 1 21 55947 0.1076 0.2839 -0.43448 2012 1 22 55948 0.1065 0.2839 -0.43508 2012 1 23 55949 0.1055 0.2838 -0.43580 2012 1 24 55950 0.1044 0.2838 -0.43664 2012 1 25 55951 0.1034 0.2838 -0.43760 2012 1 26 55952 0.1024 0.2838 -0.43861 2012 1 27 55953 0.1013 0.2838 -0.43963 2012 1 28 55954 0.1003 0.2838 -0.44061 2012 1 29 55955 0.0993 0.2838 -0.44150 2012 1 30 55956 0.0983 0.2839 -0.44229 2012 1 31 55957 0.0973 0.2840 -0.44296 2012 2 1 55958 0.0963 0.2841 -0.44352 2012 2 2 55959 0.0953 0.2842 -0.44401 2012 2 3 55960 0.0943 0.2843 -0.44445 2012 2 4 55961 0.0933 0.2845 -0.44492 2012 2 5 55962 0.0924 0.2846 -0.44547 2012 2 6 55963 0.0914 0.2848 -0.44616 2012 2 7 55964 0.0904 0.2850 -0.44704 2012 2 8 55965 0.0895 0.2852 -0.44814 2012 2 9 55966 0.0886 0.2854 -0.44943 2012 2 10 55967 0.0877 0.2856 -0.45087 2012 2 11 55968 0.0868 0.2859 -0.45234 2012 2 12 55969 0.0859 0.2861 -0.45375 2012 2 13 55970 0.0850 0.2864 -0.45503 2012 2 14 55971 0.0841 0.2867 -0.45613 2012 2 15 55972 0.0832 0.2870 -0.45707 2012 2 16 55973 0.0824 0.2873 -0.45791 2012 2 17 55974 0.0815 0.2876 -0.45873 2012 2 18 55975 0.0807 0.2879 -0.45960 2012 2 19 55976 0.0799 0.2883 -0.46058 2012 2 20 55977 0.0791 0.2887 -0.46170 2012 2 21 55978 0.0783 0.2890 -0.46295 2012 2 22 55979 0.0775 0.2894 -0.46429 2012 2 23 55980 0.0767 0.2898 -0.46565 2012 2 24 55981 0.0759 0.2902 -0.46697 2012 2 25 55982 0.0752 0.2906 -0.46819 2012 2 26 55983 0.0744 0.2911 -0.46928 2012 2 27 55984 0.0737 0.2915 -0.47022 2012 2 28 55985 0.0730 0.2920 -0.47102 2012 2 29 55986 0.0723 0.2924 -0.47170 2012 3 1 55987 0.0716 0.2929 -0.47231 2012 3 2 55988 0.0710 0.2934 -0.47289 2012 3 3 55989 0.0703 0.2939 -0.47353 2012 3 4 55990 0.0697 0.2944 -0.47428 2012 3 5 55991 0.0690 0.2949 -0.47520 2012 3 6 55992 0.0684 0.2954 -0.47633 2012 3 7 55993 0.0678 0.2959 -0.47769 2012 3 8 55994 0.0672 0.2964 -0.47923 2012 3 9 55995 0.0666 0.2970 -0.48086 2012 3 10 55996 0.0661 0.2975 -0.48246 2012 3 11 55997 0.0655 0.2981 -0.48393 2012 3 12 55998 0.0650 0.2987 -0.48519 2012 3 13 55999 0.0645 0.2992 -0.48625 2012 3 14 56000 0.0640 0.2998 -0.48715 2012 3 15 56001 0.0635 0.3004 -0.48798 2012 3 16 56002 0.0630 0.3010 -0.48882 2012 3 17 56003 0.0626 0.3016 -0.48976 2012 3 18 56004 0.0621 0.3022 -0.49083 2012 3 19 56005 0.0617 0.3028 -0.49203 2012 3 20 56006 0.0613 0.3034 -0.49333 2012 3 21 56007 0.0609 0.3040 -0.49468 2012 3 22 56008 0.0605 0.3046 -0.49604 2012 3 23 56009 0.0601 0.3053 -0.49734 2012 3 24 56010 0.0598 0.3059 -0.49855 2012 3 25 56011 0.0594 0.3065 -0.49964 2012 3 26 56012 0.0591 0.3072 -0.50059 2012 3 27 56013 0.0588 0.3078 -0.50140 2012 3 28 56014 0.0585 0.3085 -0.50211 2012 3 29 56015 0.0582 0.3091 -0.50273 2012 3 30 56016 0.0579 0.3098 -0.50331 2012 3 31 56017 0.0577 0.3104 -0.50399 2012 4 1 56018 0.0574 0.3111 -0.50487 2012 4 2 56019 0.0572 0.3117 -0.50600 2012 4 3 56020 0.0570 0.3124 -0.50737 2012 4 4 56021 0.0568 0.3131 -0.50898 2012 4 5 56022 0.0566 0.3137 -0.51074 2012 4 6 56023 0.0565 0.3144 -0.51252 2012 4 7 56024 0.0563 0.3151 -0.51424 2012 4 8 56025 0.0562 0.3157 -0.51575 2012 4 9 56026 0.0561 0.3164 -0.51698 2012 4 10 56027 0.0560 0.3171 -0.51797 2012 4 11 56028 0.0559 0.3177 -0.51883 2012 4 12 56029 0.0558 0.3184 -0.51963 2012 4 13 56030 0.0557 0.3191 -0.52049 2012 4 14 56031 0.0557 0.3197 -0.52145 2012 4 15 56032 0.0556 0.3204 -0.52250 2012 4 16 56033 0.0556 0.3211 -0.52363 2012 4 17 56034 0.0556 0.3217 -0.52484 2012 4 18 56035 0.0556 0.3224 -0.52608 2012 4 19 56036 0.0556 0.3230 -0.52726 2012 4 20 56037 0.0556 0.3237 -0.52832 2012 4 21 56038 0.0557 0.3243 -0.52929 2012 4 22 56039 0.0557 0.3250 -0.53007 2012 4 23 56040 0.0558 0.3256 -0.53080 2012 4 24 56041 0.0558 0.3263 -0.53143 2012 4 25 56042 0.0559 0.3269 -0.53197 2012 4 26 56043 0.0560 0.3276 -0.53242 2012 4 27 56044 0.0561 0.3282 -0.53289 2012 4 28 56045 0.0563 0.3288 -0.53346 2012 4 29 56046 0.0564 0.3294 -0.53416 2012 4 30 56047 0.0566 0.3301 -0.53504 2012 5 1 56048 0.0567 0.3307 -0.53603 2012 5 2 56049 0.0569 0.3313 -0.53721 2012 5 3 56050 0.0571 0.3319 -0.53853 2012 5 4 56051 0.0573 0.3325 -0.53983 2012 5 5 56052 0.0575 0.3331 -0.54101 2012 5 6 56053 0.0577 0.3337 -0.54195 2012 5 7 56054 0.0579 0.3343 -0.54270 2012 5 8 56055 0.0581 0.3349 -0.54334 2012 5 9 56056 0.0584 0.3354 -0.54389 2012 5 10 56057 0.0586 0.3360 -0.54451 2012 5 11 56058 0.0589 0.3366 -0.54527 2012 5 12 56059 0.0591 0.3371 -0.54617 2012 5 13 56060 0.0594 0.3377 -0.54712 2012 5 14 56061 0.0597 0.3382 -0.54809 2012 5 15 56062 0.0600 0.3388 -0.54903 2012 5 16 56063 0.0603 0.3393 -0.54987 2012 5 17 56064 0.0606 0.3398 -0.55058 2012 5 18 56065 0.0610 0.3403 -0.55118 2012 5 19 56066 0.0613 0.3408 -0.55167 2012 5 20 56067 0.0616 0.3413 -0.55206 2012 5 21 56068 0.0620 0.3418 -0.55233 2012 5 22 56069 0.0623 0.3423 -0.55252 2012 5 23 56070 0.0627 0.3428 -0.55272 2012 5 24 56071 0.0630 0.3433 -0.55293 2012 5 25 56072 0.0634 0.3437 -0.55314 2012 5 26 56073 0.0638 0.3442 -0.55344 2012 5 27 56074 0.0642 0.3446 -0.55389 2012 5 28 56075 0.0645 0.3451 -0.55451 2012 5 29 56076 0.0649 0.3455 -0.55525 2012 5 30 56077 0.0653 0.3459 -0.55609 2012 5 31 56078 0.0657 0.3464 -0.55695 2012 6 1 56079 0.0662 0.3468 -0.55777 2012 6 2 56080 0.0666 0.3472 -0.55851 2012 6 3 56081 0.0670 0.3475 -0.55907 2012 6 4 56082 0.0674 0.3479 -0.55949 2012 6 5 56083 0.0678 0.3483 -0.55980 2012 6 6 56084 0.0683 0.3487 -0.56006 2012 6 7 56085 0.0687 0.3490 -0.56034 2012 6 8 56086 0.0691 0.3494 -0.56065 2012 6 9 56087 0.0696 0.3497 -0.56101 2012 6 10 56088 0.0700 0.3500 -0.56142 2012 6 11 56089 0.0704 0.3503 -0.56186 2012 6 12 56090 0.0709 0.3507 -0.56234 2012 6 13 56091 0.0713 0.3510 -0.56274 2012 6 14 56092 0.0718 0.3513 -0.56309 2012 6 15 56093 0.0722 0.3515 -0.56333 2012 6 16 56094 0.0727 0.3518 -0.56340 2012 6 17 56095 0.0731 0.3521 -0.56332 2012 6 18 56096 0.0736 0.3523 -0.56314 2012 6 19 56097 0.0740 0.3526 -0.56287 2012 6 20 56098 0.0745 0.3528 -0.56256 2012 6 21 56099 0.0749 0.3530 -0.56225 2012 6 22 56100 0.0754 0.3533 -0.56202 2012 6 23 56101 0.0758 0.3535 -0.56191 2012 6 24 56102 0.0763 0.3537 -0.56196 2012 6 25 56103 0.0767 0.3539 -0.56217 2012 6 26 56104 0.0772 0.3541 -0.56248 2012 6 27 56105 0.0776 0.3542 -0.56283 2012 6 28 56106 0.0781 0.3544 -0.56316 2012 6 29 56107 0.0785 0.3546 -0.56343 2012 6 30 56108 0.0789 0.3547 -0.56357 2012 7 1 56109 0.0794 0.3549 -0.56360 2012 7 2 56110 0.0798 0.3550 -0.56355 2012 7 3 56111 0.0803 0.3551 -0.56344 2012 7 4 56112 0.0807 0.3552 -0.56339 2012 7 5 56113 0.0811 0.3553 -0.56345 2012 7 6 56114 0.0815 0.3554 -0.56365 2012 7 7 56115 0.0819 0.3555 -0.56401 2012 7 8 56116 0.0824 0.3556 -0.56440 2012 7 9 56117 0.0828 0.3557 -0.56480 2012 7 10 56118 0.0832 0.3558 -0.56510 2012 7 11 56119 0.0836 0.3558 -0.56528 2012 7 12 56120 0.0840 0.3559 -0.56532 2012 7 13 56121 0.0844 0.3559 -0.56519 2012 7 14 56122 0.0848 0.3560 -0.56493 2012 7 15 56123 0.0851 0.3560 -0.56456 2012 7 16 56124 0.0855 0.3560 -0.56409 2012 7 17 56125 0.0859 0.3560 -0.56355 2012 7 18 56126 0.0863 0.3560 -0.56301 2012 7 19 56127 0.0866 0.3560 -0.56247 2012 7 20 56128 0.0870 0.3560 -0.56202 2012 7 21 56129 0.0873 0.3560 -0.56175 2012 7 22 56130 0.0877 0.3560 -0.56159 2012 7 23 56131 0.0880 0.3560 -0.56153 2012 7 24 56132 0.0883 0.3559 -0.56152 2012 7 25 56133 0.0887 0.3559 -0.56152 2012 7 26 56134 0.0890 0.3559 -0.56141 2012 7 27 56135 0.0893 0.3558 -0.56111 2012 7 28 56136 0.0896 0.3558 -0.56068 2012 7 29 56137 0.0899 0.3557 -0.56008 2012 7 30 56138 0.0902 0.3556 -0.55943 2012 7 31 56139 0.0904 0.3556 -0.55887 2012 8 1 56140 0.0907 0.3555 -0.55845 2012 8 2 56141 0.0910 0.3554 -0.55818 2012 8 3 56142 0.0912 0.3553 -0.55804 2012 8 4 56143 0.0915 0.3552 -0.55798 2012 8 5 56144 0.0917 0.3551 -0.55798 2012 8 6 56145 0.0919 0.3550 -0.55793 2012 8 7 56146 0.0922 0.3549 -0.55782 2012 8 8 56147 0.0924 0.3548 -0.55765 2012 8 9 56148 0.0926 0.3547 -0.55737 2012 8 10 56149 0.0928 0.3546 -0.55700 2012 8 11 56150 0.0930 0.3545 -0.55659 2012 8 12 56151 0.0931 0.3544 -0.55613 2012 8 13 56152 0.0933 0.3542 -0.55564 2012 8 14 56153 0.0935 0.3541 -0.55521 2012 8 15 56154 0.0936 0.3540 -0.55490 2012 8 16 56155 0.0938 0.3538 -0.55477 2012 8 17 56156 0.0939 0.3537 -0.55487 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) 55772 -75.78 0.30 -10.98 0.21 55773 -75.57 0.30 -10.93 0.14 55774 -75.64 0.30 -10.66 0.14 55775 -76.13 0.30 -10.29 0.06 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55772 -0.145 0.119 0.186 0.210 55773 -0.167 0.119 0.205 0.140 55774 -0.196 0.119 0.203 0.140 55775 -0.236 0.119 0.184 0.060 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).