********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 1 September 2011 Vol. XXIV No. 035 ______________________________________________________________________ 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 26 55799 0.15028 .00009 0.42709 .00009 -0.294212 0.000019 11 8 27 55800 0.15191 .00009 0.42603 .00009 -0.294529 0.000019 11 8 28 55801 0.15366 .00009 0.42483 .00009 -0.295095 0.000016 11 8 29 55802 0.15560 .00009 0.42362 .00009 -0.295906 0.000012 11 8 30 55803 0.15747 .00010 0.42261 .00009 -0.296889 0.000011 11 8 31 55804 0.15925 .00010 0.42168 .00009 -0.297906 0.000008 11 9 1 55805 0.16108 .00010 0.42080 .00009 -0.298854 0.000006 _______________________________________________________________________ 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 = 0.0874 + 0.0964 cos A + 0.0594 sin A - 0.0237 cos C + 0.0350 sin C y = 0.3294 + 0.0581 cos A - 0.0851 sin A + 0.0350 cos C + 0.0237 sin C UT1-UTC = -0.3409 - 0.00071 (MJD - 55813) - (UT2-UT1) where A = 2*pi*(MJD-55805)/365.25 and C = 2*pi*(MJD-55805)/435. TAI-UTC(MJD 55806) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55805)**0.80 S t = 0.00025 (MJD-55805)**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 2 55806 0.1626 0.4199 -0.29961 2011 9 3 55807 0.1641 0.4190 -0.30010 2011 9 4 55808 0.1654 0.4181 -0.30035 2011 9 5 55809 0.1666 0.4170 -0.30044 2011 9 6 55810 0.1678 0.4159 -0.30049 2011 9 7 55811 0.1689 0.4148 -0.30055 2011 9 8 55812 0.1699 0.4137 -0.30069 2011 9 9 55813 0.1709 0.4125 -0.30095 2011 9 10 55814 0.1719 0.4114 -0.30134 2011 9 11 55815 0.1728 0.4102 -0.30186 2011 9 12 55816 0.1737 0.4091 -0.30247 2011 9 13 55817 0.1745 0.4079 -0.30315 2011 9 14 55818 0.1753 0.4066 -0.30383 2011 9 15 55819 0.1760 0.4054 -0.30445 2011 9 16 55820 0.1768 0.4042 -0.30499 2011 9 17 55821 0.1775 0.4029 -0.30543 2011 9 18 55822 0.1781 0.4017 -0.30580 2011 9 19 55823 0.1788 0.4004 -0.30611 2011 9 20 55824 0.1794 0.3991 -0.30643 2011 9 21 55825 0.1800 0.3978 -0.30681 2011 9 22 55826 0.1805 0.3965 -0.30729 2011 9 23 55827 0.1811 0.3952 -0.30796 2011 9 24 55828 0.1816 0.3939 -0.30888 2011 9 25 55829 0.1820 0.3925 -0.31007 2011 9 26 55830 0.1825 0.3912 -0.31149 2011 9 27 55831 0.1829 0.3899 -0.31304 2011 9 28 55832 0.1833 0.3885 -0.31460 2011 9 29 55833 0.1837 0.3872 -0.31601 2011 9 30 55834 0.1841 0.3858 -0.31719 2011 10 1 55835 0.1844 0.3844 -0.31816 2011 10 2 55836 0.1847 0.3831 -0.31896 2011 10 3 55837 0.1850 0.3817 -0.31971 2011 10 4 55838 0.1853 0.3803 -0.32048 2011 10 5 55839 0.1855 0.3790 -0.32133 2011 10 6 55840 0.1857 0.3776 -0.32230 2011 10 7 55841 0.1859 0.3762 -0.32337 2011 10 8 55842 0.1861 0.3748 -0.32453 2011 10 9 55843 0.1862 0.3735 -0.32575 2011 10 10 55844 0.1863 0.3721 -0.32699 2011 10 11 55845 0.1864 0.3707 -0.32819 2011 10 12 55846 0.1865 0.3693 -0.32932 2011 10 13 55847 0.1865 0.3680 -0.33036 2011 10 14 55848 0.1865 0.3666 -0.33128 2011 10 15 55849 0.1865 0.3652 -0.33211 2011 10 16 55850 0.1865 0.3638 -0.33287 2011 10 17 55851 0.1864 0.3625 -0.33360 2011 10 18 55852 0.1864 0.3611 -0.33435 2011 10 19 55853 0.1863 0.3597 -0.33518 2011 10 20 55854 0.1861 0.3584 -0.33617 2011 10 21 55855 0.1860 0.3570 -0.33735 2011 10 22 55856 0.1858 0.3556 -0.33877 2011 10 23 55857 0.1856 0.3543 -0.34041 2011 10 24 55858 0.1854 0.3529 -0.34222 2011 10 25 55859 0.1852 0.3516 -0.34409 2011 10 26 55860 0.1849 0.3503 -0.34589 2011 10 27 55861 0.1846 0.3489 -0.34753 2011 10 28 55862 0.1843 0.3476 -0.34895 2011 10 29 55863 0.1840 0.3463 -0.35018 2011 10 30 55864 0.1837 0.3450 -0.35130 2011 10 31 55865 0.1833 0.3437 -0.35239 2011 11 1 55866 0.1829 0.3424 -0.35354 2011 11 2 55867 0.1825 0.3411 -0.35478 2011 11 3 55868 0.1821 0.3398 -0.35611 2011 11 4 55869 0.1816 0.3385 -0.35752 2011 11 5 55870 0.1812 0.3373 -0.35898 2011 11 6 55871 0.1807 0.3360 -0.36045 2011 11 7 55872 0.1802 0.3348 -0.36190 2011 11 8 55873 0.1797 0.3335 -0.36329 2011 11 9 55874 0.1791 0.3323 -0.36457 2011 11 10 55875 0.1785 0.3311 -0.36575 2011 11 11 55876 0.1780 0.3299 -0.36681 2011 11 12 55877 0.1774 0.3287 -0.36778 2011 11 13 55878 0.1767 0.3275 -0.36869 2011 11 14 55879 0.1761 0.3263 -0.36959 2011 11 15 55880 0.1754 0.3252 -0.37054 2011 11 16 55881 0.1748 0.3240 -0.37158 2011 11 17 55882 0.1741 0.3229 -0.37277 2011 11 18 55883 0.1734 0.3217 -0.37413 2011 11 19 55884 0.1727 0.3206 -0.37567 2011 11 20 55885 0.1719 0.3195 -0.37735 2011 11 21 55886 0.1712 0.3184 -0.37910 2011 11 22 55887 0.1704 0.3174 -0.38081 2011 11 23 55888 0.1696 0.3163 -0.38239 2011 11 24 55889 0.1688 0.3152 -0.38377 2011 11 25 55890 0.1680 0.3142 -0.38494 2011 11 26 55891 0.1672 0.3132 -0.38594 2011 11 27 55892 0.1663 0.3122 -0.38688 2011 11 28 55893 0.1655 0.3112 -0.38783 2011 11 29 55894 0.1646 0.3102 -0.38886 2011 11 30 55895 0.1637 0.3093 -0.38998 2011 12 1 55896 0.1628 0.3083 -0.39119 2011 12 2 55897 0.1619 0.3074 -0.39243 2011 12 3 55898 0.1610 0.3065 -0.39367 2011 12 4 55899 0.1601 0.3056 -0.39486 2011 12 5 55900 0.1591 0.3047 -0.39597 2011 12 6 55901 0.1582 0.3038 -0.39696 2011 12 7 55902 0.1572 0.3030 -0.39782 2011 12 8 55903 0.1563 0.3021 -0.39855 2011 12 9 55904 0.1553 0.3013 -0.39918 2011 12 10 55905 0.1543 0.3005 -0.39973 2011 12 11 55906 0.1533 0.2997 -0.40027 2011 12 12 55907 0.1523 0.2989 -0.40083 2011 12 13 55908 0.1512 0.2982 -0.40149 2011 12 14 55909 0.1502 0.2974 -0.40228 2011 12 15 55910 0.1492 0.2967 -0.40324 2011 12 16 55911 0.1481 0.2960 -0.40435 2011 12 17 55912 0.1471 0.2953 -0.40560 2011 12 18 55913 0.1460 0.2947 -0.40692 2011 12 19 55914 0.1449 0.2940 -0.40828 2011 12 20 55915 0.1439 0.2934 -0.40954 2011 12 21 55916 0.1428 0.2928 -0.41064 2011 12 22 55917 0.1417 0.2922 -0.41157 2011 12 23 55918 0.1406 0.2916 -0.41234 2011 12 24 55919 0.1395 0.2910 -0.41302 2011 12 25 55920 0.1384 0.2905 -0.41369 2011 12 26 55921 0.1373 0.2900 -0.41444 2011 12 27 55922 0.1362 0.2895 -0.41530 2011 12 28 55923 0.1351 0.2890 -0.41626 2011 12 29 55924 0.1340 0.2885 -0.41729 2011 12 30 55925 0.1329 0.2881 -0.41834 2011 12 31 55926 0.1318 0.2876 -0.41937 2012 1 1 55927 0.1307 0.2872 -0.42032 2012 1 2 55928 0.1296 0.2868 -0.42118 2012 1 3 55929 0.1284 0.2864 -0.42192 2012 1 4 55930 0.1273 0.2861 -0.42253 2012 1 5 55931 0.1262 0.2857 -0.42304 2012 1 6 55932 0.1251 0.2854 -0.42348 2012 1 7 55933 0.1239 0.2851 -0.42388 2012 1 8 55934 0.1228 0.2848 -0.42432 2012 1 9 55935 0.1217 0.2845 -0.42484 2012 1 10 55936 0.1206 0.2843 -0.42551 2012 1 11 55937 0.1195 0.2840 -0.42635 2012 1 12 55938 0.1184 0.2838 -0.42739 2012 1 13 55939 0.1172 0.2836 -0.42857 2012 1 14 55940 0.1161 0.2834 -0.42984 2012 1 15 55941 0.1150 0.2833 -0.43110 2012 1 16 55942 0.1139 0.2831 -0.43228 2012 1 17 55943 0.1128 0.2830 -0.43331 2012 1 18 55944 0.1117 0.2829 -0.43417 2012 1 19 55945 0.1106 0.2828 -0.43488 2012 1 20 55946 0.1095 0.2827 -0.43549 2012 1 21 55947 0.1085 0.2826 -0.43608 2012 1 22 55948 0.1074 0.2826 -0.43673 2012 1 23 55949 0.1063 0.2826 -0.43749 2012 1 24 55950 0.1053 0.2826 -0.43839 2012 1 25 55951 0.1042 0.2826 -0.43939 2012 1 26 55952 0.1031 0.2826 -0.44045 2012 1 27 55953 0.1021 0.2826 -0.44151 2012 1 28 55954 0.1010 0.2827 -0.44254 2012 1 29 55955 0.1000 0.2828 -0.44347 2012 1 30 55956 0.0990 0.2829 -0.44430 2012 1 31 55957 0.0980 0.2830 -0.44502 2012 2 1 55958 0.0970 0.2831 -0.44562 2012 2 2 55959 0.0960 0.2832 -0.44615 2012 2 3 55960 0.0950 0.2834 -0.44663 2012 2 4 55961 0.0940 0.2836 -0.44713 2012 2 5 55962 0.0930 0.2837 -0.44770 2012 2 6 55963 0.0920 0.2839 -0.44842 2012 2 7 55964 0.0911 0.2842 -0.44932 2012 2 8 55965 0.0901 0.2844 -0.45043 2012 2 9 55966 0.0892 0.2846 -0.45174 2012 2 10 55967 0.0883 0.2849 -0.45318 2012 2 11 55968 0.0873 0.2852 -0.45465 2012 2 12 55969 0.0864 0.2854 -0.45605 2012 2 13 55970 0.0855 0.2857 -0.45731 2012 2 14 55971 0.0847 0.2861 -0.45838 2012 2 15 55972 0.0838 0.2864 -0.45929 2012 2 16 55973 0.0829 0.2867 -0.46008 2012 2 17 55974 0.0821 0.2871 -0.46084 2012 2 18 55975 0.0812 0.2874 -0.46164 2012 2 19 55976 0.0804 0.2878 -0.46254 2012 2 20 55977 0.0796 0.2882 -0.46358 2012 2 21 55978 0.0788 0.2886 -0.46474 2012 2 22 55979 0.0780 0.2890 -0.46600 2012 2 23 55980 0.0772 0.2894 -0.46730 2012 2 24 55981 0.0765 0.2899 -0.46860 2012 2 25 55982 0.0757 0.2903 -0.46985 2012 2 26 55983 0.0750 0.2908 -0.47101 2012 2 27 55984 0.0743 0.2913 -0.47207 2012 2 28 55985 0.0735 0.2917 -0.47304 2012 2 29 55986 0.0728 0.2922 -0.47394 2012 3 1 55987 0.0722 0.2927 -0.47481 2012 3 2 55988 0.0715 0.2933 -0.47569 2012 3 3 55989 0.0708 0.2938 -0.47665 2012 3 4 55990 0.0702 0.2943 -0.47776 2012 3 5 55991 0.0696 0.2948 -0.47905 2012 3 6 55992 0.0690 0.2954 -0.48058 2012 3 7 55993 0.0684 0.2959 -0.48234 2012 3 8 55994 0.0678 0.2965 -0.48426 2012 3 9 55995 0.0672 0.2971 -0.48625 2012 3 10 55996 0.0667 0.2977 -0.48817 2012 3 11 55997 0.0661 0.2983 -0.48991 2012 3 12 55998 0.0656 0.2989 -0.49140 2012 3 13 55999 0.0651 0.2995 -0.49263 2012 3 14 56000 0.0646 0.3001 -0.49367 2012 3 15 56001 0.0641 0.3007 -0.49461 2012 3 16 56002 0.0637 0.3013 -0.49553 2012 3 17 56003 0.0632 0.3019 -0.49650 2012 3 18 56004 0.0628 0.3026 -0.49756 2012 3 19 56005 0.0624 0.3032 -0.49872 2012 3 20 56006 0.0620 0.3039 -0.49997 2012 3 21 56007 0.0616 0.3045 -0.50127 2012 3 22 56008 0.0612 0.3052 -0.50258 2012 3 23 56009 0.0608 0.3058 -0.50384 2012 3 24 56010 0.0605 0.3065 -0.50501 2012 3 25 56011 0.0602 0.3072 -0.50607 2012 3 26 56012 0.0599 0.3078 -0.50702 2012 3 27 56013 0.0596 0.3085 -0.50787 2012 3 28 56014 0.0593 0.3092 -0.50866 2012 3 29 56015 0.0590 0.3099 -0.50943 2012 3 30 56016 0.0588 0.3105 -0.51024 2012 3 31 56017 0.0585 0.3112 -0.51111 2012 4 1 56018 0.0583 0.3119 -0.51209 2012 4 2 56019 0.0581 0.3126 -0.51324 2012 4 3 56020 0.0579 0.3133 -0.51457 2012 4 4 56021 0.0577 0.3140 -0.51609 2012 4 5 56022 0.0576 0.3147 -0.51774 2012 4 6 56023 0.0574 0.3154 -0.51942 2012 4 7 56024 0.0573 0.3161 -0.52103 2012 4 8 56025 0.0572 0.3168 -0.52245 2012 4 9 56026 0.0571 0.3175 -0.52364 2012 4 10 56027 0.0570 0.3182 -0.52464 2012 4 11 56028 0.0569 0.3189 -0.52552 2012 4 12 56029 0.0569 0.3196 -0.52639 2012 4 13 56030 0.0568 0.3203 -0.52738 2012 4 14 56031 0.0568 0.3210 -0.52848 2012 4 15 56032 0.0568 0.3217 -0.52967 2012 4 16 56033 0.0568 0.3223 -0.53090 2012 4 17 56034 0.0568 0.3230 -0.53217 2012 4 18 56035 0.0568 0.3237 -0.53346 2012 4 19 56036 0.0569 0.3244 -0.53471 2012 4 20 56037 0.0569 0.3251 -0.53584 2012 4 21 56038 0.0570 0.3258 -0.53685 2012 4 22 56039 0.0570 0.3265 -0.53773 2012 4 23 56040 0.0571 0.3271 -0.53847 2012 4 24 56041 0.0572 0.3278 -0.53908 2012 4 25 56042 0.0574 0.3285 -0.53960 2012 4 26 56043 0.0575 0.3291 -0.54005 2012 4 27 56044 0.0576 0.3298 -0.54047 2012 4 28 56045 0.0578 0.3304 -0.54103 2012 4 29 56046 0.0580 0.3311 -0.54178 2012 4 30 56047 0.0581 0.3317 -0.54277 2012 5 1 56048 0.0583 0.3324 -0.54397 2012 5 2 56049 0.0585 0.3330 -0.54536 2012 5 3 56050 0.0587 0.3337 -0.54684 2012 5 4 56051 0.0590 0.3343 -0.54829 2012 5 5 56052 0.0592 0.3349 -0.54963 2012 5 6 56053 0.0594 0.3355 -0.55074 2012 5 7 56054 0.0597 0.3361 -0.55158 2012 5 8 56055 0.0600 0.3367 -0.55222 2012 5 9 56056 0.0602 0.3373 -0.55276 2012 5 10 56057 0.0605 0.3379 -0.55329 2012 5 11 56058 0.0608 0.3385 -0.55390 2012 5 12 56059 0.0611 0.3391 -0.55461 2012 5 13 56060 0.0614 0.3397 -0.55538 2012 5 14 56061 0.0618 0.3402 -0.55619 2012 5 15 56062 0.0621 0.3408 -0.55702 2012 5 16 56063 0.0624 0.3414 -0.55782 2012 5 17 56064 0.0628 0.3419 -0.55852 2012 5 18 56065 0.0631 0.3424 -0.55906 2012 5 19 56066 0.0635 0.3430 -0.55950 2012 5 20 56067 0.0639 0.3435 -0.55975 2012 5 21 56068 0.0642 0.3440 -0.55994 2012 5 22 56069 0.0646 0.3445 -0.56006 2012 5 23 56070 0.0650 0.3450 -0.56012 2012 5 24 56071 0.0654 0.3455 -0.56012 2012 5 25 56072 0.0658 0.3460 -0.56016 2012 5 26 56073 0.0662 0.3465 -0.56032 2012 5 27 56074 0.0667 0.3469 -0.56062 2012 5 28 56075 0.0671 0.3474 -0.56107 2012 5 29 56076 0.0675 0.3478 -0.56160 2012 5 30 56077 0.0680 0.3483 -0.56225 2012 5 31 56078 0.0684 0.3487 -0.56298 2012 6 1 56079 0.0688 0.3491 -0.56364 2012 6 2 56080 0.0693 0.3495 -0.56414 2012 6 3 56081 0.0698 0.3499 -0.56441 2012 6 4 56082 0.0702 0.3503 -0.56452 2012 6 5 56083 0.0707 0.3507 -0.56458 2012 6 6 56084 0.0711 0.3511 -0.56462 2012 6 7 56085 0.0716 0.3515 -0.56476 2012 6 8 56086 0.0721 0.3518 -0.56508 2012 6 9 56087 0.0726 0.3522 -0.56553 2012 6 10 56088 0.0730 0.3525 -0.56601 2012 6 11 56089 0.0735 0.3528 -0.56648 2012 6 12 56090 0.0740 0.3532 -0.56687 2012 6 13 56091 0.0745 0.3535 -0.56713 2012 6 14 56092 0.0750 0.3538 -0.56723 2012 6 15 56093 0.0755 0.3541 -0.56721 2012 6 16 56094 0.0759 0.3544 -0.56708 2012 6 17 56095 0.0764 0.3546 -0.56686 2012 6 18 56096 0.0769 0.3549 -0.56655 2012 6 19 56097 0.0774 0.3551 -0.56619 2012 6 20 56098 0.0779 0.3554 -0.56589 2012 6 21 56099 0.0784 0.3556 -0.56564 2012 6 22 56100 0.0789 0.3559 -0.56544 2012 6 23 56101 0.0794 0.3561 -0.56534 2012 6 24 56102 0.0799 0.3563 -0.56541 2012 6 25 56103 0.0804 0.3565 -0.56562 2012 6 26 56104 0.0808 0.3567 -0.56591 2012 6 27 56105 0.0813 0.3569 -0.56623 2012 6 28 56106 0.0818 0.3570 -0.56651 2012 6 29 56107 0.0823 0.3572 -0.56672 2012 6 30 56108 0.0828 0.3573 -0.56684 2012 7 1 56109 0.0832 0.3575 -0.56681 2012 7 2 56110 0.0837 0.3576 -0.56670 2012 7 3 56111 0.0842 0.3578 -0.56654 2012 7 4 56112 0.0847 0.3579 -0.56641 2012 7 5 56113 0.0851 0.3580 -0.56634 2012 7 6 56114 0.0856 0.3581 -0.56633 2012 7 7 56115 0.0860 0.3582 -0.56638 2012 7 8 56116 0.0865 0.3583 -0.56646 2012 7 9 56117 0.0869 0.3583 -0.56655 2012 7 10 56118 0.0874 0.3584 -0.56666 2012 7 11 56119 0.0878 0.3585 -0.56668 2012 7 12 56120 0.0883 0.3585 -0.56664 2012 7 13 56121 0.0887 0.3586 -0.56649 2012 7 14 56122 0.0891 0.3586 -0.56620 2012 7 15 56123 0.0895 0.3586 -0.56579 2012 7 16 56124 0.0899 0.3586 -0.56533 2012 7 17 56125 0.0904 0.3587 -0.56481 2012 7 18 56126 0.0908 0.3587 -0.56432 2012 7 19 56127 0.0912 0.3587 -0.56387 2012 7 20 56128 0.0915 0.3586 -0.56355 2012 7 21 56129 0.0919 0.3586 -0.56338 2012 7 22 56130 0.0923 0.3586 -0.56337 2012 7 23 56131 0.0927 0.3586 -0.56351 2012 7 24 56132 0.0930 0.3585 -0.56370 2012 7 25 56133 0.0934 0.3585 -0.56388 2012 7 26 56134 0.0937 0.3584 -0.56399 2012 7 27 56135 0.0941 0.3584 -0.56401 2012 7 28 56136 0.0944 0.3583 -0.56392 2012 7 29 56137 0.0947 0.3583 -0.56377 2012 7 30 56138 0.0951 0.3582 -0.56361 2012 7 31 56139 0.0954 0.3581 -0.56345 2012 8 1 56140 0.0957 0.3580 -0.56342 2012 8 2 56141 0.0960 0.3579 -0.56352 2012 8 3 56142 0.0962 0.3578 -0.56379 2012 8 4 56143 0.0965 0.3577 -0.56421 2012 8 5 56144 0.0968 0.3576 -0.56464 2012 8 6 56145 0.0971 0.3575 -0.56508 2012 8 7 56146 0.0973 0.3574 -0.56541 2012 8 8 56147 0.0975 0.3573 -0.56562 2012 8 9 56148 0.0978 0.3571 -0.56570 2012 8 10 56149 0.0980 0.3570 -0.56563 2012 8 11 56150 0.0982 0.3569 -0.56546 2012 8 12 56151 0.0984 0.3567 -0.56522 2012 8 13 56152 0.0986 0.3566 -0.56493 2012 8 14 56153 0.0988 0.3565 -0.56462 2012 8 15 56154 0.0990 0.3563 -0.56436 2012 8 16 56155 0.0992 0.3562 -0.56414 2012 8 17 56156 0.0993 0.3560 -0.56404 2012 8 18 56157 0.0995 0.3559 -0.56415 2012 8 19 56158 0.0996 0.3557 -0.56436 2012 8 20 56159 0.0997 0.3555 -0.56465 2012 8 21 56160 0.0999 0.3554 -0.56495 2012 8 22 56161 0.1000 0.3552 -0.56521 2012 8 23 56162 0.1001 0.3551 -0.56533 2012 8 24 56163 0.1002 0.3549 -0.56524 2012 8 25 56164 0.1003 0.3547 -0.56504 2012 8 26 56165 0.1003 0.3545 -0.56474 2012 8 27 56166 0.1004 0.3544 -0.56444 2012 8 28 56167 0.1004 0.3542 -0.56428 2012 8 29 56168 0.1005 0.3540 -0.56429 2012 8 30 56169 0.1005 0.3539 -0.56446 2012 8 31 56170 0.1005 0.3537 -0.56474 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) 55783 -77.92 0.30 -10.87 0.03 55784 -78.01 0.30 -10.94 0.03 55785 -77.91 0.30 -10.90 0.03 55786 -77.76 0.21 -10.73 0.09 55787 -77.71 0.21 -10.50 0.09 55788 -77.79 0.14 -10.32 0.09 55789 -77.96 0.11 -10.30 0.10 55790 -78.17 0.12 -10.42 0.12 55791 -78.29 0.12 -10.58 0.12 55792 -78.14 0.12 -10.71 0.12 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55783 -0.229 0.119 0.084 0.030 55784 -0.234 0.119 0.085 0.030 55785 -0.229 0.119 0.093 0.030 55786 -0.221 0.084 0.104 0.090 55787 -0.220 0.084 0.108 0.090 55788 -0.218 0.056 0.119 0.090 55789 -0.197 0.044 0.119 0.100 55790 -0.151 0.048 0.101 0.120 55791 -0.082 0.048 0.058 0.120 55792 0.012 0.048 -0.008 0.120 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).