********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 22 September 2011 Vol. XXIV No. 038 ______________________________________________________________________ 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 16 55820 0.18149 .00009 0.40257 .00009 -0.306133 0.000018 11 9 17 55821 0.18214 .00009 0.40141 .00009 -0.306667 0.000015 11 9 18 55822 0.18235 .00009 0.40027 .00009 -0.307105 0.000014 11 9 19 55823 0.18218 .00009 0.39902 .00009 -0.307504 0.000012 11 9 20 55824 0.18205 .00010 0.39718 .00009 -0.307915 0.000010 11 9 21 55825 0.18226 .00010 0.39501 .00009 -0.308419 0.000011 11 9 22 55826 0.18242 .00010 0.39306 .00009 -0.309044 0.000010 _______________________________________________________________________ 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 = 0.0853 + 0.1097 cos A + 0.0183 sin A - 0.0125 cos C + 0.0437 sin C y = 0.3295 + 0.0216 cos A - 0.0988 sin A + 0.0437 cos C + 0.0125 sin C UT1-UTC = -0.3617 - 0.00073 (MJD - 55834) - (UT2-UT1) where A = 2*pi*(MJD-55826)/365.25 and C = 2*pi*(MJD-55826)/435. TAI-UTC(MJD 55827) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55826)**0.80 S t = 0.00025 (MJD-55826)**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 23 55827 0.1828 0.3912 -0.30989 2011 9 24 55828 0.1830 0.3896 -0.31102 2011 9 25 55829 0.1832 0.3881 -0.31243 2011 9 26 55830 0.1833 0.3867 -0.31409 2011 9 27 55831 0.1835 0.3853 -0.31587 2011 9 28 55832 0.1837 0.3838 -0.31760 2011 9 29 55833 0.1839 0.3824 -0.31916 2011 9 30 55834 0.1841 0.3810 -0.32047 2011 10 1 55835 0.1843 0.3797 -0.32156 2011 10 2 55836 0.1845 0.3783 -0.32253 2011 10 3 55837 0.1847 0.3769 -0.32344 2011 10 4 55838 0.1849 0.3756 -0.32435 2011 10 5 55839 0.1850 0.3743 -0.32531 2011 10 6 55840 0.1851 0.3729 -0.32635 2011 10 7 55841 0.1852 0.3716 -0.32748 2011 10 8 55842 0.1853 0.3703 -0.32868 2011 10 9 55843 0.1854 0.3690 -0.32992 2011 10 10 55844 0.1854 0.3677 -0.33113 2011 10 11 55845 0.1854 0.3664 -0.33228 2011 10 12 55846 0.1854 0.3651 -0.33336 2011 10 13 55847 0.1854 0.3638 -0.33434 2011 10 14 55848 0.1854 0.3625 -0.33522 2011 10 15 55849 0.1853 0.3612 -0.33601 2011 10 16 55850 0.1852 0.3599 -0.33674 2011 10 17 55851 0.1851 0.3586 -0.33743 2011 10 18 55852 0.1850 0.3573 -0.33813 2011 10 19 55853 0.1849 0.3560 -0.33892 2011 10 20 55854 0.1847 0.3547 -0.33985 2011 10 21 55855 0.1845 0.3535 -0.34098 2011 10 22 55856 0.1843 0.3522 -0.34233 2011 10 23 55857 0.1840 0.3510 -0.34390 2011 10 24 55858 0.1838 0.3497 -0.34562 2011 10 25 55859 0.1835 0.3484 -0.34739 2011 10 26 55860 0.1832 0.3472 -0.34908 2011 10 27 55861 0.1829 0.3460 -0.35061 2011 10 28 55862 0.1826 0.3447 -0.35192 2011 10 29 55863 0.1822 0.3435 -0.35304 2011 10 30 55864 0.1818 0.3423 -0.35404 2011 10 31 55865 0.1814 0.3411 -0.35501 2011 11 1 55866 0.1810 0.3399 -0.35602 2011 11 2 55867 0.1806 0.3387 -0.35713 2011 11 3 55868 0.1801 0.3375 -0.35835 2011 11 4 55869 0.1796 0.3363 -0.35965 2011 11 5 55870 0.1791 0.3351 -0.36100 2011 11 6 55871 0.1786 0.3340 -0.36236 2011 11 7 55872 0.1781 0.3328 -0.36368 2011 11 8 55873 0.1775 0.3317 -0.36493 2011 11 9 55874 0.1770 0.3306 -0.36608 2011 11 10 55875 0.1764 0.3294 -0.36711 2011 11 11 55876 0.1758 0.3283 -0.36803 2011 11 12 55877 0.1752 0.3272 -0.36885 2011 11 13 55878 0.1745 0.3261 -0.36962 2011 11 14 55879 0.1739 0.3251 -0.37038 2011 11 15 55880 0.1732 0.3240 -0.37119 2011 11 16 55881 0.1725 0.3229 -0.37211 2011 11 17 55882 0.1718 0.3219 -0.37319 2011 11 18 55883 0.1711 0.3209 -0.37445 2011 11 19 55884 0.1704 0.3198 -0.37590 2011 11 20 55885 0.1696 0.3188 -0.37750 2011 11 21 55886 0.1688 0.3178 -0.37918 2011 11 22 55887 0.1681 0.3169 -0.38085 2011 11 23 55888 0.1673 0.3159 -0.38239 2011 11 24 55889 0.1665 0.3149 -0.38375 2011 11 25 55890 0.1657 0.3140 -0.38491 2011 11 26 55891 0.1648 0.3131 -0.38593 2011 11 27 55892 0.1640 0.3122 -0.38689 2011 11 28 55893 0.1631 0.3113 -0.38787 2011 11 29 55894 0.1623 0.3104 -0.38895 2011 11 30 55895 0.1614 0.3095 -0.39013 2011 12 1 55896 0.1605 0.3087 -0.39140 2011 12 2 55897 0.1596 0.3078 -0.39271 2011 12 3 55898 0.1587 0.3070 -0.39404 2011 12 4 55899 0.1578 0.3062 -0.39532 2011 12 5 55900 0.1568 0.3054 -0.39652 2011 12 6 55901 0.1559 0.3046 -0.39763 2011 12 7 55902 0.1549 0.3038 -0.39862 2011 12 8 55903 0.1540 0.3031 -0.39950 2011 12 9 55904 0.1530 0.3024 -0.40029 2011 12 10 55905 0.1520 0.3017 -0.40101 2011 12 11 55906 0.1510 0.3010 -0.40172 2011 12 12 55907 0.1500 0.3003 -0.40246 2011 12 13 55908 0.1490 0.2996 -0.40330 2011 12 14 55909 0.1480 0.2990 -0.40428 2011 12 15 55910 0.1470 0.2983 -0.40542 2011 12 16 55911 0.1460 0.2977 -0.40672 2011 12 17 55912 0.1450 0.2971 -0.40816 2011 12 18 55913 0.1439 0.2965 -0.40965 2011 12 19 55914 0.1429 0.2960 -0.41113 2011 12 20 55915 0.1418 0.2954 -0.41251 2011 12 21 55916 0.1408 0.2949 -0.41373 2011 12 22 55917 0.1397 0.2944 -0.41475 2011 12 23 55918 0.1387 0.2939 -0.41562 2011 12 24 55919 0.1376 0.2934 -0.41638 2011 12 25 55920 0.1366 0.2929 -0.41714 2011 12 26 55921 0.1355 0.2925 -0.41796 2011 12 27 55922 0.1344 0.2920 -0.41888 2011 12 28 55923 0.1334 0.2916 -0.41991 2011 12 29 55924 0.1323 0.2912 -0.42100 2011 12 30 55925 0.1312 0.2909 -0.42212 2011 12 31 55926 0.1301 0.2905 -0.42321 2012 1 1 55927 0.1291 0.2902 -0.42423 2012 1 2 55928 0.1280 0.2898 -0.42515 2012 1 3 55929 0.1269 0.2895 -0.42595 2012 1 4 55930 0.1258 0.2892 -0.42662 2012 1 5 55931 0.1248 0.2890 -0.42718 2012 1 6 55932 0.1237 0.2887 -0.42765 2012 1 7 55933 0.1226 0.2885 -0.42809 2012 1 8 55934 0.1216 0.2883 -0.42855 2012 1 9 55935 0.1205 0.2881 -0.42912 2012 1 10 55936 0.1194 0.2879 -0.42984 2012 1 11 55937 0.1184 0.2877 -0.43074 2012 1 12 55938 0.1173 0.2875 -0.43182 2012 1 13 55939 0.1163 0.2874 -0.43305 2012 1 14 55940 0.1152 0.2873 -0.43437 2012 1 15 55941 0.1142 0.2872 -0.43568 2012 1 16 55942 0.1131 0.2871 -0.43690 2012 1 17 55943 0.1121 0.2870 -0.43798 2012 1 18 55944 0.1110 0.2870 -0.43888 2012 1 19 55945 0.1100 0.2869 -0.43963 2012 1 20 55946 0.1090 0.2869 -0.44029 2012 1 21 55947 0.1080 0.2869 -0.44093 2012 1 22 55948 0.1069 0.2869 -0.44163 2012 1 23 55949 0.1059 0.2870 -0.44244 2012 1 24 55950 0.1049 0.2870 -0.44338 2012 1 25 55951 0.1039 0.2871 -0.44442 2012 1 26 55952 0.1030 0.2872 -0.44553 2012 1 27 55953 0.1020 0.2872 -0.44665 2012 1 28 55954 0.1010 0.2874 -0.44772 2012 1 29 55955 0.1000 0.2875 -0.44870 2012 1 30 55956 0.0991 0.2876 -0.44959 2012 1 31 55957 0.0981 0.2878 -0.45035 2012 2 1 55958 0.0972 0.2879 -0.45102 2012 2 2 55959 0.0963 0.2881 -0.45159 2012 2 3 55960 0.0953 0.2883 -0.45213 2012 2 4 55961 0.0944 0.2885 -0.45269 2012 2 5 55962 0.0935 0.2887 -0.45332 2012 2 6 55963 0.0926 0.2890 -0.45410 2012 2 7 55964 0.0918 0.2892 -0.45506 2012 2 8 55965 0.0909 0.2895 -0.45623 2012 2 9 55966 0.0900 0.2898 -0.45760 2012 2 10 55967 0.0892 0.2901 -0.45909 2012 2 11 55968 0.0883 0.2904 -0.46062 2012 2 12 55969 0.0875 0.2907 -0.46208 2012 2 13 55970 0.0867 0.2910 -0.46339 2012 2 14 55971 0.0859 0.2914 -0.46452 2012 2 15 55972 0.0851 0.2917 -0.46548 2012 2 16 55973 0.0843 0.2921 -0.46632 2012 2 17 55974 0.0836 0.2925 -0.46713 2012 2 18 55975 0.0828 0.2929 -0.46798 2012 2 19 55976 0.0821 0.2933 -0.46893 2012 2 20 55977 0.0813 0.2937 -0.47000 2012 2 21 55978 0.0806 0.2941 -0.47121 2012 2 22 55979 0.0799 0.2946 -0.47250 2012 2 23 55980 0.0792 0.2950 -0.47383 2012 2 24 55981 0.0785 0.2955 -0.47515 2012 2 25 55982 0.0779 0.2959 -0.47640 2012 2 26 55983 0.0772 0.2964 -0.47756 2012 2 27 55984 0.0766 0.2969 -0.47861 2012 2 28 55985 0.0760 0.2974 -0.47954 2012 2 29 55986 0.0754 0.2979 -0.48039 2012 3 1 55987 0.0748 0.2984 -0.48118 2012 3 2 55988 0.0742 0.2990 -0.48196 2012 3 3 55989 0.0736 0.2995 -0.48279 2012 3 4 55990 0.0731 0.3000 -0.48374 2012 3 5 55991 0.0725 0.3006 -0.48486 2012 3 6 55992 0.0720 0.3011 -0.48619 2012 3 7 55993 0.0715 0.3017 -0.48774 2012 3 8 55994 0.0710 0.3023 -0.48948 2012 3 9 55995 0.0705 0.3029 -0.49131 2012 3 10 55996 0.0701 0.3034 -0.49313 2012 3 11 55997 0.0696 0.3040 -0.49483 2012 3 12 55998 0.0692 0.3046 -0.49634 2012 3 13 55999 0.0688 0.3052 -0.49766 2012 3 14 56000 0.0684 0.3058 -0.49883 2012 3 15 56001 0.0680 0.3065 -0.49994 2012 3 16 56002 0.0676 0.3071 -0.50105 2012 3 17 56003 0.0672 0.3077 -0.50225 2012 3 18 56004 0.0669 0.3083 -0.50357 2012 3 19 56005 0.0666 0.3090 -0.50502 2012 3 20 56006 0.0663 0.3096 -0.50658 2012 3 21 56007 0.0660 0.3102 -0.50821 2012 3 22 56008 0.0657 0.3109 -0.50987 2012 3 23 56009 0.0654 0.3115 -0.51152 2012 3 24 56010 0.0652 0.3122 -0.51312 2012 3 25 56011 0.0649 0.3128 -0.51465 2012 3 26 56012 0.0647 0.3135 -0.51611 2012 3 27 56013 0.0645 0.3142 -0.51751 2012 3 28 56014 0.0643 0.3148 -0.51888 2012 3 29 56015 0.0641 0.3155 -0.52022 2012 3 30 56016 0.0640 0.3162 -0.52158 2012 3 31 56017 0.0638 0.3168 -0.52298 2012 4 1 56018 0.0637 0.3175 -0.52444 2012 4 2 56019 0.0636 0.3182 -0.52600 2012 4 3 56020 0.0635 0.3188 -0.52767 2012 4 4 56021 0.0634 0.3195 -0.52946 2012 4 5 56022 0.0633 0.3202 -0.53133 2012 4 6 56023 0.0633 0.3208 -0.53320 2012 4 7 56024 0.0632 0.3215 -0.53498 2012 4 8 56025 0.0632 0.3222 -0.53658 2012 4 9 56026 0.0632 0.3229 -0.53796 2012 4 10 56027 0.0632 0.3235 -0.53915 2012 4 11 56028 0.0632 0.3242 -0.54020 2012 4 12 56029 0.0632 0.3249 -0.54119 2012 4 13 56030 0.0633 0.3255 -0.54218 2012 4 14 56031 0.0633 0.3262 -0.54321 2012 4 15 56032 0.0634 0.3268 -0.54428 2012 4 16 56033 0.0635 0.3275 -0.54540 2012 4 17 56034 0.0636 0.3281 -0.54655 2012 4 18 56035 0.0637 0.3288 -0.54769 2012 4 19 56036 0.0638 0.3294 -0.54881 2012 4 20 56037 0.0639 0.3301 -0.54988 2012 4 21 56038 0.0641 0.3307 -0.55086 2012 4 22 56039 0.0643 0.3314 -0.55175 2012 4 23 56040 0.0644 0.3320 -0.55254 2012 4 24 56041 0.0646 0.3326 -0.55325 2012 4 25 56042 0.0648 0.3333 -0.55390 2012 4 26 56043 0.0650 0.3339 -0.55453 2012 4 27 56044 0.0653 0.3345 -0.55520 2012 4 28 56045 0.0655 0.3351 -0.55592 2012 4 29 56046 0.0657 0.3357 -0.55672 2012 4 30 56047 0.0660 0.3363 -0.55766 2012 5 1 56048 0.0663 0.3369 -0.55874 2012 5 2 56049 0.0665 0.3375 -0.55995 2012 5 3 56050 0.0668 0.3381 -0.56126 2012 5 4 56051 0.0671 0.3387 -0.56259 2012 5 5 56052 0.0674 0.3392 -0.56386 2012 5 6 56053 0.0678 0.3398 -0.56497 2012 5 7 56054 0.0681 0.3404 -0.56596 2012 5 8 56055 0.0684 0.3409 -0.56681 2012 5 9 56056 0.0688 0.3414 -0.56759 2012 5 10 56057 0.0691 0.3420 -0.56832 2012 5 11 56058 0.0695 0.3425 -0.56908 2012 5 12 56059 0.0699 0.3430 -0.56994 2012 5 13 56060 0.0703 0.3436 -0.57083 2012 5 14 56061 0.0707 0.3441 -0.57172 2012 5 15 56062 0.0711 0.3446 -0.57256 2012 5 16 56063 0.0715 0.3451 -0.57332 2012 5 17 56064 0.0719 0.3455 -0.57399 2012 5 18 56065 0.0723 0.3460 -0.57452 2012 5 19 56066 0.0727 0.3465 -0.57492 2012 5 20 56067 0.0732 0.3469 -0.57517 2012 5 21 56068 0.0736 0.3474 -0.57525 2012 5 22 56069 0.0741 0.3478 -0.57527 2012 5 23 56070 0.0745 0.3483 -0.57528 2012 5 24 56071 0.0750 0.3487 -0.57531 2012 5 25 56072 0.0755 0.3491 -0.57551 2012 5 26 56073 0.0759 0.3495 -0.57584 2012 5 27 56074 0.0764 0.3499 -0.57631 2012 5 28 56075 0.0769 0.3503 -0.57690 2012 5 29 56076 0.0774 0.3507 -0.57764 2012 5 30 56077 0.0779 0.3511 -0.57849 2012 5 31 56078 0.0784 0.3514 -0.57936 2012 6 1 56079 0.0789 0.3518 -0.58015 2012 6 2 56080 0.0794 0.3521 -0.58079 2012 6 3 56081 0.0799 0.3525 -0.58124 2012 6 4 56082 0.0804 0.3528 -0.58150 2012 6 5 56083 0.0809 0.3531 -0.58163 2012 6 6 56084 0.0814 0.3534 -0.58172 2012 6 7 56085 0.0819 0.3537 -0.58180 2012 6 8 56086 0.0825 0.3540 -0.58190 2012 6 9 56087 0.0830 0.3543 -0.58213 2012 6 10 56088 0.0835 0.3546 -0.58245 2012 6 11 56089 0.0840 0.3548 -0.58283 2012 6 12 56090 0.0846 0.3551 -0.58318 2012 6 13 56091 0.0851 0.3553 -0.58347 2012 6 14 56092 0.0856 0.3555 -0.58364 2012 6 15 56093 0.0862 0.3558 -0.58365 2012 6 16 56094 0.0867 0.3560 -0.58353 2012 6 17 56095 0.0872 0.3562 -0.58325 2012 6 18 56096 0.0877 0.3564 -0.58281 2012 6 19 56097 0.0883 0.3565 -0.58229 2012 6 20 56098 0.0888 0.3567 -0.58176 2012 6 21 56099 0.0893 0.3569 -0.58128 2012 6 22 56100 0.0898 0.3570 -0.58092 2012 6 23 56101 0.0904 0.3572 -0.58071 2012 6 24 56102 0.0909 0.3573 -0.58065 2012 6 25 56103 0.0914 0.3574 -0.58073 2012 6 26 56104 0.0919 0.3575 -0.58095 2012 6 27 56105 0.0924 0.3577 -0.58124 2012 6 28 56106 0.0929 0.3577 -0.58147 2012 6 29 56107 0.0934 0.3578 -0.58157 2012 6 30 56108 0.0939 0.3579 -0.58155 2012 7 1 56109 0.0944 0.3580 -0.58131 2012 7 2 56110 0.0949 0.3580 -0.58104 2012 7 3 56111 0.0954 0.3581 -0.58073 2012 7 4 56112 0.0959 0.3581 -0.58044 2012 7 5 56113 0.0964 0.3582 -0.58018 2012 7 6 56114 0.0969 0.3582 -0.58001 2012 7 7 56115 0.0974 0.3582 -0.57993 2012 7 8 56116 0.0978 0.3582 -0.57987 2012 7 9 56117 0.0983 0.3582 -0.57979 2012 7 10 56118 0.0987 0.3582 -0.57956 2012 7 11 56119 0.0992 0.3582 -0.57925 2012 7 12 56120 0.0996 0.3582 -0.57887 2012 7 13 56121 0.1001 0.3581 -0.57835 2012 7 14 56122 0.1005 0.3581 -0.57771 2012 7 15 56123 0.1009 0.3581 -0.57693 2012 7 16 56124 0.1014 0.3580 -0.57611 2012 7 17 56125 0.1018 0.3579 -0.57535 2012 7 18 56126 0.1022 0.3579 -0.57465 2012 7 19 56127 0.1026 0.3578 -0.57412 2012 7 20 56128 0.1030 0.3577 -0.57382 2012 7 21 56129 0.1034 0.3576 -0.57374 2012 7 22 56130 0.1037 0.3575 -0.57380 2012 7 23 56131 0.1041 0.3574 -0.57398 2012 7 24 56132 0.1045 0.3573 -0.57419 2012 7 25 56133 0.1048 0.3572 -0.57434 2012 7 26 56134 0.1052 0.3571 -0.57436 2012 7 27 56135 0.1055 0.3569 -0.57427 2012 7 28 56136 0.1058 0.3568 -0.57406 2012 7 29 56137 0.1061 0.3566 -0.57379 2012 7 30 56138 0.1065 0.3565 -0.57348 2012 7 31 56139 0.1067 0.3563 -0.57320 2012 8 1 56140 0.1070 0.3562 -0.57307 2012 8 2 56141 0.1073 0.3560 -0.57306 2012 8 3 56142 0.1076 0.3559 -0.57312 2012 8 4 56143 0.1079 0.3557 -0.57324 2012 8 5 56144 0.1081 0.3555 -0.57339 2012 8 6 56145 0.1084 0.3553 -0.57351 2012 8 7 56146 0.1086 0.3551 -0.57353 2012 8 8 56147 0.1088 0.3550 -0.57343 2012 8 9 56148 0.1090 0.3548 -0.57322 2012 8 10 56149 0.1092 0.3546 -0.57293 2012 8 11 56150 0.1094 0.3544 -0.57261 2012 8 12 56151 0.1096 0.3542 -0.57225 2012 8 13 56152 0.1098 0.3540 -0.57192 2012 8 14 56153 0.1099 0.3537 -0.57163 2012 8 15 56154 0.1101 0.3535 -0.57144 2012 8 16 56155 0.1102 0.3533 -0.57136 2012 8 17 56156 0.1104 0.3531 -0.57141 2012 8 18 56157 0.1105 0.3529 -0.57162 2012 8 19 56158 0.1106 0.3527 -0.57199 2012 8 20 56159 0.1107 0.3524 -0.57249 2012 8 21 56160 0.1108 0.3522 -0.57309 2012 8 22 56161 0.1109 0.3520 -0.57364 2012 8 23 56162 0.1109 0.3518 -0.57414 2012 8 24 56163 0.1110 0.3515 -0.57451 2012 8 25 56164 0.1110 0.3513 -0.57475 2012 8 26 56165 0.1111 0.3511 -0.57491 2012 8 27 56166 0.1111 0.3508 -0.57508 2012 8 28 56167 0.1111 0.3506 -0.57529 2012 8 29 56168 0.1111 0.3504 -0.57558 2012 8 30 56169 0.1111 0.3502 -0.57595 2012 8 31 56170 0.1111 0.3499 -0.57641 2012 9 1 56171 0.1110 0.3497 -0.57692 2012 9 2 56172 0.1110 0.3495 -0.57744 2012 9 3 56173 0.1109 0.3493 -0.57793 2012 9 4 56174 0.1109 0.3490 -0.57833 2012 9 5 56175 0.1108 0.3488 -0.57863 2012 9 6 56176 0.1107 0.3486 -0.57884 2012 9 7 56177 0.1106 0.3484 -0.57901 2012 9 8 56178 0.1105 0.3481 -0.57915 2012 9 9 56179 0.1104 0.3479 -0.57932 2012 9 10 56180 0.1103 0.3477 -0.57955 2012 9 11 56181 0.1102 0.3475 -0.57985 2012 9 12 56182 0.1100 0.3473 -0.58031 2012 9 13 56183 0.1099 0.3471 -0.58095 2012 9 14 56184 0.1097 0.3469 -0.58183 2012 9 15 56185 0.1095 0.3467 -0.58296 2012 9 16 56186 0.1093 0.3465 -0.58422 2012 9 17 56187 0.1092 0.3463 -0.58558 2012 9 18 56188 0.1090 0.3461 -0.58689 2012 9 19 56189 0.1087 0.3459 -0.58807 2012 9 20 56190 0.1085 0.3458 -0.58909 2012 9 21 56191 0.1083 0.3456 -0.58993 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) 55807 -80.09 0.30 -10.31 0.15 55808 -80.00 0.30 -10.38 0.15 55809 -79.69 0.30 -10.50 0.02 55810 -79.32 0.30 -10.60 0.03 55811 -79.03 0.30 -10.60 0.03 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55807 -0.175 0.119 0.211 0.150 55808 -0.167 0.119 0.254 0.150 55809 -0.144 0.119 0.290 0.020 55810 -0.106 0.119 0.311 0.030 55811 -0.051 0.119 0.324 0.030 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).