********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 28 July 2011 Vol. XXIV No. 030 ______________________________________________________________________ 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 7 22 55764 0.08662 .00009 0.44871 .00009 -0.292149 0.000013 11 7 23 55765 0.08904 .00009 0.44940 .00009 -0.292218 0.000012 11 7 24 55766 0.09108 .00009 0.44976 .00010 -0.292197 0.000014 11 7 25 55767 0.09313 .00009 0.44976 .00009 -0.292081 0.000010 11 7 26 55768 0.09491 .00009 0.44955 .00009 -0.291874 0.000010 11 7 27 55769 0.09632 .00009 0.44872 .00010 -0.291572 0.000009 11 7 28 55770 0.09785 .00009 0.44738 .00009 -0.291231 0.000008 _______________________________________________________________________ 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 = 0.0882 + 0.0527 cos A + 0.1033 sin A - 0.0446 cos C + 0.0157 sin C y = 0.3352 + 0.0964 cos A - 0.0455 sin A + 0.0157 cos C + 0.0446 sin C UT1-UTC = -0.3135 - 0.00069 (MJD - 55778) - (UT2-UT1) where A = 2*pi*(MJD-55770)/365.25 and C = 2*pi*(MJD-55770)/435. TAI-UTC(MJD 55771) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55770)**0.80 S t = 0.00025 (MJD-55770)**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 7 29 55771 0.0996 0.4463 -0.29095 2011 7 30 55772 0.1015 0.4454 -0.29081 2011 7 31 55773 0.1033 0.4447 -0.29086 2011 8 1 55774 0.1050 0.4441 -0.29115 2011 8 2 55775 0.1067 0.4436 -0.29165 2011 8 3 55776 0.1082 0.4431 -0.29225 2011 8 4 55777 0.1097 0.4426 -0.29284 2011 8 5 55778 0.1112 0.4420 -0.29328 2011 8 6 55779 0.1127 0.4415 -0.29352 2011 8 7 55780 0.1142 0.4409 -0.29354 2011 8 8 55781 0.1157 0.4403 -0.29337 2011 8 9 55782 0.1172 0.4397 -0.29312 2011 8 10 55783 0.1187 0.4391 -0.29288 2011 8 11 55784 0.1201 0.4386 -0.29276 2011 8 12 55785 0.1215 0.4380 -0.29279 2011 8 13 55786 0.1229 0.4373 -0.29295 2011 8 14 55787 0.1243 0.4367 -0.29324 2011 8 15 55788 0.1256 0.4360 -0.29360 2011 8 16 55789 0.1270 0.4354 -0.29399 2011 8 17 55790 0.1283 0.4347 -0.29437 2011 8 18 55791 0.1296 0.4340 -0.29468 2011 8 19 55792 0.1310 0.4333 -0.29490 2011 8 20 55793 0.1322 0.4325 -0.29502 2011 8 21 55794 0.1335 0.4318 -0.29503 2011 8 22 55795 0.1347 0.4310 -0.29496 2011 8 23 55796 0.1360 0.4302 -0.29483 2011 8 24 55797 0.1372 0.4294 -0.29473 2011 8 25 55798 0.1384 0.4286 -0.29472 2011 8 26 55799 0.1396 0.4277 -0.29486 2011 8 27 55800 0.1407 0.4269 -0.29524 2011 8 28 55801 0.1419 0.4260 -0.29587 2011 8 29 55802 0.1430 0.4251 -0.29676 2011 8 30 55803 0.1441 0.4242 -0.29781 2011 8 31 55804 0.1452 0.4233 -0.29892 2011 9 1 55805 0.1462 0.4223 -0.29995 2011 9 2 55806 0.1473 0.4214 -0.30080 2011 9 3 55807 0.1483 0.4204 -0.30144 2011 9 4 55808 0.1493 0.4194 -0.30190 2011 9 5 55809 0.1503 0.4184 -0.30226 2011 9 6 55810 0.1513 0.4174 -0.30260 2011 9 7 55811 0.1522 0.4164 -0.30300 2011 9 8 55812 0.1531 0.4154 -0.30352 2011 9 9 55813 0.1540 0.4143 -0.30418 2011 9 10 55814 0.1549 0.4133 -0.30496 2011 9 11 55815 0.1558 0.4122 -0.30584 2011 9 12 55816 0.1566 0.4111 -0.30678 2011 9 13 55817 0.1574 0.4100 -0.30774 2011 9 14 55818 0.1582 0.4089 -0.30867 2011 9 15 55819 0.1590 0.4078 -0.30956 2011 9 16 55820 0.1597 0.4067 -0.31035 2011 9 17 55821 0.1605 0.4055 -0.31106 2011 9 18 55822 0.1612 0.4044 -0.31168 2011 9 19 55823 0.1619 0.4032 -0.31226 2011 9 20 55824 0.1625 0.4020 -0.31282 2011 9 21 55825 0.1632 0.4009 -0.31343 2011 9 22 55826 0.1638 0.3997 -0.31416 2011 9 23 55827 0.1644 0.3985 -0.31507 2011 9 24 55828 0.1650 0.3973 -0.31621 2011 9 25 55829 0.1655 0.3961 -0.31759 2011 9 26 55830 0.1660 0.3949 -0.31917 2011 9 27 55831 0.1665 0.3937 -0.32086 2011 9 28 55832 0.1670 0.3924 -0.32251 2011 9 29 55833 0.1675 0.3912 -0.32402 2011 9 30 55834 0.1679 0.3900 -0.32529 2011 10 1 55835 0.1683 0.3887 -0.32632 2011 10 2 55836 0.1687 0.3875 -0.32717 2011 10 3 55837 0.1691 0.3862 -0.32794 2011 10 4 55838 0.1695 0.3850 -0.32872 2011 10 5 55839 0.1698 0.3837 -0.32956 2011 10 6 55840 0.1701 0.3825 -0.33052 2011 10 7 55841 0.1704 0.3812 -0.33158 2011 10 8 55842 0.1706 0.3800 -0.33274 2011 10 9 55843 0.1708 0.3787 -0.33396 2011 10 10 55844 0.1711 0.3774 -0.33518 2011 10 11 55845 0.1712 0.3761 -0.33638 2011 10 12 55846 0.1714 0.3749 -0.33750 2011 10 13 55847 0.1716 0.3736 -0.33851 2011 10 14 55848 0.1717 0.3723 -0.33941 2011 10 15 55849 0.1718 0.3711 -0.34020 2011 10 16 55850 0.1719 0.3698 -0.34090 2011 10 17 55851 0.1719 0.3685 -0.34157 2011 10 18 55852 0.1719 0.3672 -0.34226 2011 10 19 55853 0.1720 0.3660 -0.34302 2011 10 20 55854 0.1719 0.3647 -0.34393 2011 10 21 55855 0.1719 0.3635 -0.34503 2011 10 22 55856 0.1719 0.3622 -0.34635 2011 10 23 55857 0.1718 0.3609 -0.34788 2011 10 24 55858 0.1717 0.3597 -0.34957 2011 10 25 55859 0.1716 0.3584 -0.35129 2011 10 26 55860 0.1714 0.3572 -0.35294 2011 10 27 55861 0.1713 0.3559 -0.35441 2011 10 28 55862 0.1711 0.3547 -0.35565 2011 10 29 55863 0.1709 0.3535 -0.35669 2011 10 30 55864 0.1707 0.3522 -0.35760 2011 10 31 55865 0.1704 0.3510 -0.35847 2011 11 1 55866 0.1702 0.3498 -0.35939 2011 11 2 55867 0.1699 0.3486 -0.36039 2011 11 3 55868 0.1696 0.3474 -0.36149 2011 11 4 55869 0.1693 0.3462 -0.36265 2011 11 5 55870 0.1689 0.3450 -0.36386 2011 11 6 55871 0.1686 0.3438 -0.36507 2011 11 7 55872 0.1682 0.3426 -0.36625 2011 11 8 55873 0.1678 0.3414 -0.36735 2011 11 9 55874 0.1674 0.3403 -0.36835 2011 11 10 55875 0.1670 0.3391 -0.36923 2011 11 11 55876 0.1665 0.3380 -0.36999 2011 11 12 55877 0.1660 0.3368 -0.37066 2011 11 13 55878 0.1656 0.3357 -0.37127 2011 11 14 55879 0.1651 0.3346 -0.37197 2011 11 15 55880 0.1645 0.3335 -0.37271 2011 11 16 55881 0.1640 0.3324 -0.37356 2011 11 17 55882 0.1634 0.3313 -0.37456 2011 11 18 55883 0.1629 0.3302 -0.37575 2011 11 19 55884 0.1623 0.3292 -0.37713 2011 11 20 55885 0.1617 0.3281 -0.37865 2011 11 21 55886 0.1611 0.3271 -0.38024 2011 11 22 55887 0.1604 0.3260 -0.38181 2011 11 23 55888 0.1598 0.3250 -0.38326 2011 11 24 55889 0.1591 0.3240 -0.38451 2011 11 25 55890 0.1585 0.3230 -0.38555 2011 11 26 55891 0.1578 0.3220 -0.38644 2011 11 27 55892 0.1571 0.3210 -0.38725 2011 11 28 55893 0.1564 0.3201 -0.38808 2011 11 29 55894 0.1556 0.3191 -0.38899 2011 11 30 55895 0.1549 0.3182 -0.39000 2011 12 1 55896 0.1541 0.3173 -0.39108 2011 12 2 55897 0.1534 0.3164 -0.39220 2011 12 3 55898 0.1526 0.3155 -0.39333 2011 12 4 55899 0.1518 0.3146 -0.39441 2011 12 5 55900 0.1510 0.3137 -0.39541 2011 12 6 55901 0.1502 0.3129 -0.39631 2011 12 7 55902 0.1494 0.3120 -0.39709 2011 12 8 55903 0.1485 0.3112 -0.39775 2011 12 9 55904 0.1477 0.3104 -0.39830 2011 12 10 55905 0.1468 0.3096 -0.39878 2011 12 11 55906 0.1460 0.3088 -0.39924 2011 12 12 55907 0.1451 0.3080 -0.39974 2011 12 13 55908 0.1442 0.3073 -0.40033 2011 12 14 55909 0.1433 0.3065 -0.40105 2011 12 15 55910 0.1424 0.3058 -0.40194 2011 12 16 55911 0.1415 0.3051 -0.40300 2011 12 17 55912 0.1406 0.3044 -0.40420 2011 12 18 55913 0.1397 0.3037 -0.40547 2011 12 19 55914 0.1388 0.3031 -0.40672 2011 12 20 55915 0.1378 0.3024 -0.40788 2011 12 21 55916 0.1369 0.3018 -0.40889 2011 12 22 55917 0.1359 0.3012 -0.40971 2011 12 23 55918 0.1350 0.3006 -0.41037 2011 12 24 55919 0.1340 0.3000 -0.41095 2011 12 25 55920 0.1331 0.2995 -0.41152 2011 12 26 55921 0.1321 0.2989 -0.41216 2011 12 27 55922 0.1311 0.2984 -0.41292 2011 12 28 55923 0.1302 0.2979 -0.41377 2011 12 29 55924 0.1292 0.2974 -0.41470 2011 12 30 55925 0.1282 0.2969 -0.41565 2011 12 31 55926 0.1272 0.2964 -0.41657 2012 1 1 55927 0.1262 0.2960 -0.41742 2012 1 2 55928 0.1252 0.2955 -0.41817 2012 1 3 55929 0.1242 0.2951 -0.41881 2012 1 4 55930 0.1232 0.2947 -0.41932 2012 1 5 55931 0.1222 0.2943 -0.41973 2012 1 6 55932 0.1213 0.2939 -0.42005 2012 1 7 55933 0.1203 0.2936 -0.42035 2012 1 8 55934 0.1193 0.2932 -0.42068 2012 1 9 55935 0.1183 0.2929 -0.42109 2012 1 10 55936 0.1173 0.2926 -0.42165 2012 1 11 55937 0.1163 0.2923 -0.42239 2012 1 12 55938 0.1153 0.2920 -0.42331 2012 1 13 55939 0.1143 0.2918 -0.42438 2012 1 14 55940 0.1133 0.2915 -0.42553 2012 1 15 55941 0.1123 0.2913 -0.42668 2012 1 16 55942 0.1113 0.2911 -0.42775 2012 1 17 55943 0.1103 0.2909 -0.42867 2012 1 18 55944 0.1093 0.2907 -0.42941 2012 1 19 55945 0.1083 0.2906 -0.43001 2012 1 20 55946 0.1074 0.2904 -0.43051 2012 1 21 55947 0.1064 0.2903 -0.43099 2012 1 22 55948 0.1054 0.2902 -0.43153 2012 1 23 55949 0.1044 0.2901 -0.43220 2012 1 24 55950 0.1035 0.2900 -0.43299 2012 1 25 55951 0.1025 0.2899 -0.43389 2012 1 26 55952 0.1016 0.2899 -0.43486 2012 1 27 55953 0.1006 0.2898 -0.43583 2012 1 28 55954 0.0997 0.2898 -0.43677 2012 1 29 55955 0.0987 0.2898 -0.43761 2012 1 30 55956 0.0978 0.2898 -0.43835 2012 1 31 55957 0.0969 0.2898 -0.43897 2012 2 1 55958 0.0959 0.2898 -0.43948 2012 2 2 55959 0.0950 0.2899 -0.43990 2012 2 3 55960 0.0941 0.2900 -0.44027 2012 2 4 55961 0.0932 0.2900 -0.44065 2012 2 5 55962 0.0923 0.2901 -0.44110 2012 2 6 55963 0.0914 0.2902 -0.44169 2012 2 7 55964 0.0906 0.2903 -0.44245 2012 2 8 55965 0.0897 0.2905 -0.44343 2012 2 9 55966 0.0888 0.2906 -0.44459 2012 2 10 55967 0.0880 0.2908 -0.44587 2012 2 11 55968 0.0871 0.2909 -0.44719 2012 2 12 55969 0.0863 0.2911 -0.44843 2012 2 13 55970 0.0855 0.2913 -0.44952 2012 2 14 55971 0.0847 0.2915 -0.45043 2012 2 15 55972 0.0839 0.2917 -0.45117 2012 2 16 55973 0.0831 0.2920 -0.45179 2012 2 17 55974 0.0823 0.2922 -0.45237 2012 2 18 55975 0.0815 0.2925 -0.45299 2012 2 19 55976 0.0807 0.2927 -0.45370 2012 2 20 55977 0.0800 0.2930 -0.45453 2012 2 21 55978 0.0792 0.2933 -0.45549 2012 2 22 55979 0.0785 0.2936 -0.45654 2012 2 23 55980 0.0778 0.2939 -0.45766 2012 2 24 55981 0.0771 0.2942 -0.45878 2012 2 25 55982 0.0764 0.2946 -0.45985 2012 2 26 55983 0.0757 0.2949 -0.46080 2012 2 27 55984 0.0750 0.2952 -0.46162 2012 2 28 55985 0.0743 0.2956 -0.46229 2012 2 29 55986 0.0737 0.2960 -0.46283 2012 3 1 55987 0.0730 0.2964 -0.46330 2012 3 2 55988 0.0724 0.2967 -0.46376 2012 3 3 55989 0.0718 0.2971 -0.46428 2012 3 4 55990 0.0712 0.2975 -0.46493 2012 3 5 55991 0.0706 0.2980 -0.46577 2012 3 6 55992 0.0700 0.2984 -0.46686 2012 3 7 55993 0.0694 0.2988 -0.46821 2012 3 8 55994 0.0689 0.2992 -0.46974 2012 3 9 55995 0.0683 0.2997 -0.47134 2012 3 10 55996 0.0678 0.3001 -0.47294 2012 3 11 55997 0.0673 0.3006 -0.47437 2012 3 12 55998 0.0667 0.3011 -0.47566 2012 3 13 55999 0.0663 0.3015 -0.47676 2012 3 14 56000 0.0658 0.3020 -0.47767 2012 3 15 56001 0.0653 0.3025 -0.47844 2012 3 16 56002 0.0649 0.3030 -0.47919 2012 3 17 56003 0.0644 0.3035 -0.48002 2012 3 18 56004 0.0640 0.3040 -0.48096 2012 3 19 56005 0.0636 0.3045 -0.48201 2012 3 20 56006 0.0632 0.3050 -0.48309 2012 3 21 56007 0.0628 0.3055 -0.48425 2012 3 22 56008 0.0624 0.3060 -0.48548 2012 3 23 56009 0.0620 0.3066 -0.48665 2012 3 24 56010 0.0617 0.3071 -0.48772 2012 3 25 56011 0.0614 0.3076 -0.48862 2012 3 26 56012 0.0610 0.3082 -0.48942 2012 3 27 56013 0.0607 0.3087 -0.49017 2012 3 28 56014 0.0604 0.3092 -0.49083 2012 3 29 56015 0.0601 0.3098 -0.49151 2012 3 30 56016 0.0599 0.3103 -0.49229 2012 3 31 56017 0.0596 0.3109 -0.49320 2012 4 1 56018 0.0594 0.3114 -0.49424 2012 4 2 56019 0.0591 0.3120 -0.49546 2012 4 3 56020 0.0589 0.3126 -0.49687 2012 4 4 56021 0.0587 0.3131 -0.49845 2012 4 5 56022 0.0585 0.3137 -0.50014 2012 4 6 56023 0.0583 0.3142 -0.50189 2012 4 7 56024 0.0582 0.3148 -0.50360 2012 4 8 56025 0.0580 0.3153 -0.50517 2012 4 9 56026 0.0579 0.3159 -0.50653 2012 4 10 56027 0.0578 0.3165 -0.50769 2012 4 11 56028 0.0576 0.3170 -0.50877 2012 4 12 56029 0.0575 0.3176 -0.50981 2012 4 13 56030 0.0575 0.3182 -0.51083 2012 4 14 56031 0.0574 0.3187 -0.51190 2012 4 15 56032 0.0573 0.3193 -0.51307 2012 4 16 56033 0.0573 0.3198 -0.51432 2012 4 17 56034 0.0572 0.3204 -0.51560 2012 4 18 56035 0.0572 0.3210 -0.51688 2012 4 19 56036 0.0572 0.3215 -0.51810 2012 4 20 56037 0.0572 0.3221 -0.51928 2012 4 21 56038 0.0572 0.3226 -0.52039 2012 4 22 56039 0.0572 0.3232 -0.52138 2012 4 23 56040 0.0572 0.3237 -0.52227 2012 4 24 56041 0.0572 0.3242 -0.52305 2012 4 25 56042 0.0573 0.3248 -0.52375 2012 4 26 56043 0.0574 0.3253 -0.52440 2012 4 27 56044 0.0574 0.3259 -0.52503 2012 4 28 56045 0.0575 0.3264 -0.52572 2012 4 29 56046 0.0576 0.3269 -0.52656 2012 4 30 56047 0.0577 0.3274 -0.52761 2012 5 1 56048 0.0578 0.3280 -0.52894 2012 5 2 56049 0.0579 0.3285 -0.53045 2012 5 3 56050 0.0581 0.3290 -0.53211 2012 5 4 56051 0.0582 0.3295 -0.53379 2012 5 5 56052 0.0584 0.3300 -0.53531 2012 5 6 56053 0.0585 0.3305 -0.53663 2012 5 7 56054 0.0587 0.3310 -0.53773 2012 5 8 56055 0.0589 0.3315 -0.53861 2012 5 9 56056 0.0590 0.3320 -0.53937 2012 5 10 56057 0.0592 0.3324 -0.54008 2012 5 11 56058 0.0594 0.3329 -0.54081 2012 5 12 56059 0.0596 0.3334 -0.54163 2012 5 13 56060 0.0599 0.3338 -0.54250 2012 5 14 56061 0.0601 0.3343 -0.54343 2012 5 15 56062 0.0603 0.3347 -0.54435 2012 5 16 56063 0.0606 0.3352 -0.54523 2012 5 17 56064 0.0608 0.3356 -0.54602 2012 5 18 56065 0.0611 0.3360 -0.54673 2012 5 19 56066 0.0613 0.3365 -0.54734 2012 5 20 56067 0.0616 0.3369 -0.54785 2012 5 21 56068 0.0619 0.3373 -0.54827 2012 5 22 56069 0.0621 0.3377 -0.54858 2012 5 23 56070 0.0624 0.3381 -0.54888 2012 5 24 56071 0.0627 0.3385 -0.54920 2012 5 25 56072 0.0630 0.3389 -0.54962 2012 5 26 56073 0.0633 0.3393 -0.55022 2012 5 27 56074 0.0636 0.3396 -0.55096 2012 5 28 56075 0.0639 0.3400 -0.55190 2012 5 29 56076 0.0643 0.3403 -0.55295 2012 5 30 56077 0.0646 0.3407 -0.55410 2012 5 31 56078 0.0649 0.3410 -0.55525 2012 6 1 56079 0.0652 0.3414 -0.55629 2012 6 2 56080 0.0656 0.3417 -0.55717 2012 6 3 56081 0.0659 0.3420 -0.55785 2012 6 4 56082 0.0662 0.3423 -0.55831 2012 6 5 56083 0.0666 0.3426 -0.55859 2012 6 6 56084 0.0669 0.3429 -0.55879 2012 6 7 56085 0.0673 0.3432 -0.55892 2012 6 8 56086 0.0676 0.3435 -0.55908 2012 6 9 56087 0.0680 0.3438 -0.55935 2012 6 10 56088 0.0683 0.3440 -0.55961 2012 6 11 56089 0.0687 0.3443 -0.55984 2012 6 12 56090 0.0690 0.3446 -0.56001 2012 6 13 56091 0.0694 0.3448 -0.56012 2012 6 14 56092 0.0698 0.3450 -0.56010 2012 6 15 56093 0.0701 0.3453 -0.55987 2012 6 16 56094 0.0705 0.3455 -0.55950 2012 6 17 56095 0.0708 0.3457 -0.55896 2012 6 18 56096 0.0712 0.3459 -0.55831 2012 6 19 56097 0.0715 0.3461 -0.55768 2012 6 20 56098 0.0719 0.3463 -0.55709 2012 6 21 56099 0.0723 0.3465 -0.55657 2012 6 22 56100 0.0726 0.3466 -0.55616 2012 6 23 56101 0.0730 0.3468 -0.55589 2012 6 24 56102 0.0733 0.3470 -0.55581 2012 6 25 56103 0.0737 0.3471 -0.55585 2012 6 26 56104 0.0740 0.3473 -0.55601 2012 6 27 56105 0.0744 0.3474 -0.55625 2012 6 28 56106 0.0747 0.3475 -0.55648 2012 6 29 56107 0.0751 0.3477 -0.55660 2012 6 30 56108 0.0754 0.3478 -0.55663 2012 7 1 56109 0.0758 0.3479 -0.55650 2012 7 2 56110 0.0761 0.3480 -0.55623 2012 7 3 56111 0.0765 0.3481 -0.55593 2012 7 4 56112 0.0768 0.3482 -0.55568 2012 7 5 56113 0.0771 0.3482 -0.55556 2012 7 6 56114 0.0774 0.3483 -0.55560 2012 7 7 56115 0.0778 0.3484 -0.55577 2012 7 8 56116 0.0781 0.3484 -0.55598 2012 7 9 56117 0.0784 0.3485 -0.55618 2012 7 10 56118 0.0787 0.3485 -0.55630 2012 7 11 56119 0.0790 0.3486 -0.55629 2012 7 12 56120 0.0793 0.3486 -0.55614 2012 7 13 56121 0.0796 0.3486 -0.55586 2012 7 14 56122 0.0799 0.3487 -0.55551 2012 7 15 56123 0.0802 0.3487 -0.55505 2012 7 16 56124 0.0805 0.3487 -0.55451 2012 7 17 56125 0.0807 0.3487 -0.55401 2012 7 18 56126 0.0810 0.3487 -0.55357 2012 7 19 56127 0.0813 0.3487 -0.55318 2012 7 20 56128 0.0815 0.3487 -0.55296 2012 7 21 56129 0.0818 0.3487 -0.55292 2012 7 22 56130 0.0820 0.3486 -0.55304 2012 7 23 56131 0.0823 0.3486 -0.55331 2012 7 24 56132 0.0825 0.3486 -0.55369 2012 7 25 56133 0.0827 0.3485 -0.55404 2012 7 26 56134 0.0829 0.3485 -0.55429 2012 7 27 56135 0.0832 0.3485 -0.55440 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) 55749 -72.94 0.30 -10.40 0.04 55750 -73.23 0.30 -10.39 0.04 55751 -73.31 0.30 -10.41 0.04 55752 -73.39 0.11 -10.42 0.11 55753 -73.58 0.11 -10.48 0.11 55754 -73.85 0.18 -10.62 0.19 55755 -73.99 0.20 -10.82 0.16 55756 -73.85 0.20 -10.94 0.16 55757 -73.47 0.20 -10.89 0.16 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55749 -0.327 0.119 0.081 0.040 55750 -0.359 0.119 0.084 0.040 55751 -0.374 0.119 0.054 0.040 55752 -0.376 0.044 0.030 0.110 55753 -0.356 0.044 0.018 0.110 55754 -0.328 0.072 0.027 0.190 55755 -0.287 0.080 0.017 0.160 55756 -0.227 0.080 0.003 0.160 55757 -0.148 0.080 -0.007 0.160 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).