********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 26 May 2011 Vol. XXIV No. 021 ______________________________________________________________________ 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 5 20 55701 -.02983 .00009 0.38327 .00010 -0.267771 0.000017 11 5 21 55702 -.02898 .00009 0.38481 .00009 -0.268566 0.000019 11 5 22 55703 -.02802 .00009 0.38624 .00009 -0.269386 0.000016 11 5 23 55704 -.02680 .00009 0.38773 .00010 -0.270205 0.000015 11 5 24 55705 -.02537 .00009 0.38925 .00010 -0.271070 0.000013 11 5 25 55706 -.02367 .00009 0.39094 .00010 -0.271972 0.000010 11 5 26 55707 -.02190 .00009 0.39315 .00010 -0.272878 0.000012 _______________________________________________________________________ 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 = 0.0854 - 0.0618 cos A + 0.1019 sin A - 0.0429 cos C - 0.0359 sin C y = 0.3328 + 0.0923 cos A + 0.0559 sin A - 0.0359 cos C + 0.0429 sin C UT1-UTC = -0.2504 - 0.00065 (MJD - 55715) - (UT2-UT1) where A = 2*pi*(MJD-55707)/365.25 and C = 2*pi*(MJD-55707)/435. TAI-UTC(MJD 55708) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55707)**0.80 S t = 0.00025 (MJD-55707)**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 5 27 55708 -0.0205 0.3951 -0.27387 2011 5 28 55709 -0.0191 0.3972 -0.27485 2011 5 29 55710 -0.0179 0.3991 -0.27572 2011 5 30 55711 -0.0166 0.4008 -0.27647 2011 5 31 55712 -0.0153 0.4024 -0.27711 2011 6 1 55713 -0.0140 0.4039 -0.27767 2011 6 2 55714 -0.0126 0.4054 -0.27817 2011 6 3 55715 -0.0113 0.4068 -0.27867 2011 6 4 55716 -0.0099 0.4082 -0.27921 2011 6 5 55717 -0.0085 0.4096 -0.27982 2011 6 6 55718 -0.0071 0.4109 -0.28056 2011 6 7 55719 -0.0057 0.4122 -0.28146 2011 6 8 55720 -0.0043 0.4134 -0.28246 2011 6 9 55721 -0.0028 0.4147 -0.28353 2011 6 10 55722 -0.0013 0.4159 -0.28462 2011 6 11 55723 0.0002 0.4171 -0.28566 2011 6 12 55724 0.0017 0.4182 -0.28657 2011 6 13 55725 0.0032 0.4194 -0.28730 2011 6 14 55726 0.0048 0.4205 -0.28782 2011 6 15 55727 0.0063 0.4216 -0.28818 2011 6 16 55728 0.0079 0.4226 -0.28844 2011 6 17 55729 0.0095 0.4237 -0.28870 2011 6 18 55730 0.0111 0.4247 -0.28902 2011 6 19 55731 0.0127 0.4257 -0.28942 2011 6 20 55732 0.0143 0.4266 -0.28987 2011 6 21 55733 0.0159 0.4276 -0.29035 2011 6 22 55734 0.0176 0.4285 -0.29081 2011 6 23 55735 0.0192 0.4294 -0.29122 2011 6 24 55736 0.0209 0.4303 -0.29154 2011 6 25 55737 0.0226 0.4311 -0.29174 2011 6 26 55738 0.0243 0.4319 -0.29179 2011 6 27 55739 0.0259 0.4327 -0.29170 2011 6 28 55740 0.0276 0.4335 -0.29147 2011 6 29 55741 0.0293 0.4342 -0.29113 2011 6 30 55742 0.0311 0.4349 -0.29074 2011 7 1 55743 0.0328 0.4356 -0.29038 2011 7 2 55744 0.0345 0.4363 -0.29012 2011 7 3 55745 0.0362 0.4369 -0.29002 2011 7 4 55746 0.0380 0.4375 -0.29014 2011 7 5 55747 0.0397 0.4381 -0.29044 2011 7 6 55748 0.0415 0.4387 -0.29088 2011 7 7 55749 0.0432 0.4392 -0.29135 2011 7 8 55750 0.0450 0.4397 -0.29174 2011 7 9 55751 0.0467 0.4402 -0.29198 2011 7 10 55752 0.0485 0.4407 -0.29199 2011 7 11 55753 0.0503 0.4411 -0.29179 2011 7 12 55754 0.0520 0.4415 -0.29142 2011 7 13 55755 0.0538 0.4419 -0.29095 2011 7 14 55756 0.0555 0.4422 -0.29046 2011 7 15 55757 0.0573 0.4425 -0.29004 2011 7 16 55758 0.0591 0.4428 -0.28973 2011 7 17 55759 0.0608 0.4431 -0.28954 2011 7 18 55760 0.0626 0.4434 -0.28944 2011 7 19 55761 0.0644 0.4436 -0.28940 2011 7 20 55762 0.0661 0.4438 -0.28936 2011 7 21 55763 0.0679 0.4439 -0.28928 2011 7 22 55764 0.0696 0.4441 -0.28911 2011 7 23 55765 0.0714 0.4442 -0.28885 2011 7 24 55766 0.0731 0.4443 -0.28846 2011 7 25 55767 0.0749 0.4443 -0.28798 2011 7 26 55768 0.0766 0.4444 -0.28740 2011 7 27 55769 0.0783 0.4444 -0.28679 2011 7 28 55770 0.0800 0.4444 -0.28621 2011 7 29 55771 0.0818 0.4444 -0.28572 2011 7 30 55772 0.0835 0.4443 -0.28541 2011 7 31 55773 0.0852 0.4442 -0.28532 2011 8 1 55774 0.0869 0.4441 -0.28545 2011 8 2 55775 0.0886 0.4440 -0.28577 2011 8 3 55776 0.0902 0.4438 -0.28617 2011 8 4 55777 0.0919 0.4436 -0.28654 2011 8 5 55778 0.0936 0.4434 -0.28676 2011 8 6 55779 0.0952 0.4432 -0.28679 2011 8 7 55780 0.0969 0.4429 -0.28661 2011 8 8 55781 0.0985 0.4426 -0.28626 2011 8 9 55782 0.1001 0.4423 -0.28581 2011 8 10 55783 0.1017 0.4420 -0.28535 2011 8 11 55784 0.1033 0.4416 -0.28495 2011 8 12 55785 0.1049 0.4413 -0.28467 2011 8 13 55786 0.1065 0.4409 -0.28452 2011 8 14 55787 0.1081 0.4405 -0.28449 2011 8 15 55788 0.1096 0.4400 -0.28455 2011 8 16 55789 0.1112 0.4395 -0.28465 2011 8 17 55790 0.1127 0.4391 -0.28474 2011 8 18 55791 0.1142 0.4386 -0.28478 2011 8 19 55792 0.1157 0.4380 -0.28473 2011 8 20 55793 0.1172 0.4375 -0.28459 2011 8 21 55794 0.1186 0.4369 -0.28435 2011 8 22 55795 0.1201 0.4363 -0.28403 2011 8 23 55796 0.1215 0.4357 -0.28366 2011 8 24 55797 0.1230 0.4351 -0.28330 2011 8 25 55798 0.1244 0.4344 -0.28303 2011 8 26 55799 0.1258 0.4337 -0.28291 2011 8 27 55800 0.1271 0.4330 -0.28301 2011 8 28 55801 0.1285 0.4323 -0.28337 2011 8 29 55802 0.1298 0.4316 -0.28397 2011 8 30 55803 0.1311 0.4308 -0.28473 2011 8 31 55804 0.1324 0.4301 -0.28553 2011 9 1 55805 0.1337 0.4293 -0.28624 2011 9 2 55806 0.1350 0.4285 -0.28676 2011 9 3 55807 0.1362 0.4277 -0.28706 2011 9 4 55808 0.1375 0.4268 -0.28717 2011 9 5 55809 0.1387 0.4260 -0.28716 2011 9 6 55810 0.1399 0.4251 -0.28712 2011 9 7 55811 0.1410 0.4242 -0.28713 2011 9 8 55812 0.1422 0.4233 -0.28724 2011 9 9 55813 0.1433 0.4224 -0.28748 2011 9 10 55814 0.1444 0.4214 -0.28785 2011 9 11 55815 0.1455 0.4205 -0.28833 2011 9 12 55816 0.1466 0.4195 -0.28894 2011 9 13 55817 0.1476 0.4185 -0.28956 2011 9 14 55818 0.1487 0.4175 -0.29015 2011 9 15 55819 0.1497 0.4165 -0.29067 2011 9 16 55820 0.1507 0.4155 -0.29109 2011 9 17 55821 0.1516 0.4144 -0.29142 2011 9 18 55822 0.1526 0.4134 -0.29166 2011 9 19 55823 0.1535 0.4123 -0.29184 2011 9 20 55824 0.1544 0.4112 -0.29202 2011 9 21 55825 0.1553 0.4101 -0.29225 2011 9 22 55826 0.1561 0.4090 -0.29261 2011 9 23 55827 0.1570 0.4079 -0.29315 2011 9 24 55828 0.1578 0.4068 -0.29394 2011 9 25 55829 0.1586 0.4057 -0.29499 2011 9 26 55830 0.1593 0.4045 -0.29625 2011 9 27 55831 0.1601 0.4034 -0.29762 2011 9 28 55832 0.1608 0.4022 -0.29897 2011 9 29 55833 0.1615 0.4011 -0.30018 2011 9 30 55834 0.1622 0.3999 -0.30116 2011 10 1 55835 0.1628 0.3987 -0.30192 2011 10 2 55836 0.1635 0.3975 -0.30251 2011 10 3 55837 0.1641 0.3963 -0.30302 2011 10 4 55838 0.1647 0.3951 -0.30354 2011 10 5 55839 0.1652 0.3939 -0.30414 2011 10 6 55840 0.1658 0.3926 -0.30485 2011 10 7 55841 0.1663 0.3914 -0.30567 2011 10 8 55842 0.1668 0.3902 -0.30658 2011 10 9 55843 0.1673 0.3889 -0.30755 2011 10 10 55844 0.1677 0.3877 -0.30853 2011 10 11 55845 0.1681 0.3864 -0.30949 2011 10 12 55846 0.1685 0.3852 -0.31037 2011 10 13 55847 0.1689 0.3839 -0.31117 2011 10 14 55848 0.1693 0.3827 -0.31186 2011 10 15 55849 0.1696 0.3814 -0.31245 2011 10 16 55850 0.1699 0.3801 -0.31297 2011 10 17 55851 0.1702 0.3789 -0.31347 2011 10 18 55852 0.1705 0.3776 -0.31398 2011 10 19 55853 0.1707 0.3763 -0.31458 2011 10 20 55854 0.1709 0.3750 -0.31533 2011 10 21 55855 0.1711 0.3737 -0.31627 2011 10 22 55856 0.1713 0.3725 -0.31744 2011 10 23 55857 0.1715 0.3712 -0.31883 2011 10 24 55858 0.1716 0.3699 -0.32037 2011 10 25 55859 0.1717 0.3686 -0.32197 2011 10 26 55860 0.1718 0.3673 -0.32349 2011 10 27 55861 0.1719 0.3661 -0.32483 2011 10 28 55862 0.1719 0.3648 -0.32594 2011 10 29 55863 0.1719 0.3635 -0.32685 2011 10 30 55864 0.1719 0.3622 -0.32764 2011 10 31 55865 0.1719 0.3610 -0.32839 2011 11 1 55866 0.1718 0.3597 -0.32920 2011 11 2 55867 0.1718 0.3584 -0.33009 2011 11 3 55868 0.1717 0.3571 -0.33108 2011 11 4 55869 0.1716 0.3559 -0.33214 2011 11 5 55870 0.1715 0.3546 -0.33324 2011 11 6 55871 0.1713 0.3534 -0.33435 2011 11 7 55872 0.1712 0.3521 -0.33543 2011 11 8 55873 0.1710 0.3509 -0.33643 2011 11 9 55874 0.1708 0.3496 -0.33732 2011 11 10 55875 0.1705 0.3484 -0.33810 2011 11 11 55876 0.1703 0.3471 -0.33877 2011 11 12 55877 0.1700 0.3459 -0.33934 2011 11 13 55878 0.1697 0.3447 -0.33985 2011 11 14 55879 0.1694 0.3435 -0.34036 2011 11 15 55880 0.1691 0.3423 -0.34092 2011 11 16 55881 0.1688 0.3411 -0.34158 2011 11 17 55882 0.1684 0.3399 -0.34239 2011 11 18 55883 0.1680 0.3387 -0.34339 2011 11 19 55884 0.1676 0.3375 -0.34457 2011 11 20 55885 0.1672 0.3363 -0.34589 2011 11 21 55886 0.1668 0.3352 -0.34729 2011 11 22 55887 0.1663 0.3340 -0.34865 2011 11 23 55888 0.1659 0.3329 -0.34989 2011 11 24 55889 0.1654 0.3317 -0.35093 2011 11 25 55890 0.1649 0.3306 -0.35175 2011 11 26 55891 0.1644 0.3295 -0.35242 2011 11 27 55892 0.1638 0.3284 -0.35299 2011 11 28 55893 0.1633 0.3273 -0.35358 2011 11 29 55894 0.1627 0.3262 -0.35422 2011 11 30 55895 0.1621 0.3251 -0.35494 2011 12 1 55896 0.1615 0.3240 -0.35572 2011 12 2 55897 0.1609 0.3229 -0.35653 2011 12 3 55898 0.1603 0.3219 -0.35733 2011 12 4 55899 0.1597 0.3209 -0.35808 2011 12 5 55900 0.1590 0.3198 -0.35876 2011 12 6 55901 0.1583 0.3188 -0.35934 2011 12 7 55902 0.1577 0.3178 -0.35982 2011 12 8 55903 0.1570 0.3168 -0.36019 2011 12 9 55904 0.1563 0.3158 -0.36050 2011 12 10 55905 0.1556 0.3148 -0.36076 2011 12 11 55906 0.1548 0.3139 -0.36104 2011 12 12 55907 0.1541 0.3129 -0.36138 2011 12 13 55908 0.1533 0.3120 -0.36184 2011 12 14 55909 0.1526 0.3111 -0.36246 2011 12 15 55910 0.1518 0.3102 -0.36326 2011 12 16 55911 0.1510 0.3093 -0.36424 2011 12 17 55912 0.1502 0.3084 -0.36536 2011 12 18 55913 0.1494 0.3075 -0.36657 2011 12 19 55914 0.1486 0.3067 -0.36777 2011 12 20 55915 0.1478 0.3058 -0.36888 2011 12 21 55916 0.1469 0.3050 -0.36985 2011 12 22 55917 0.1461 0.3042 -0.37064 2011 12 23 55918 0.1452 0.3034 -0.37126 2011 12 24 55919 0.1444 0.3026 -0.37179 2011 12 25 55920 0.1435 0.3018 -0.37230 2011 12 26 55921 0.1426 0.3011 -0.37289 2011 12 27 55922 0.1418 0.3003 -0.37364 2011 12 28 55923 0.1409 0.2996 -0.37454 2011 12 29 55924 0.1400 0.2989 -0.37557 2011 12 30 55925 0.1391 0.2982 -0.37664 2011 12 31 55926 0.1382 0.2975 -0.37769 2012 1 1 55927 0.1373 0.2968 -0.37865 2012 1 2 55928 0.1363 0.2961 -0.37949 2012 1 3 55929 0.1354 0.2955 -0.38016 2012 1 4 55930 0.1345 0.2949 -0.38066 2012 1 5 55931 0.1335 0.2942 -0.38100 2012 1 6 55932 0.1326 0.2936 -0.38123 2012 1 7 55933 0.1317 0.2931 -0.38142 2012 1 8 55934 0.1307 0.2925 -0.38165 2012 1 9 55935 0.1298 0.2919 -0.38201 2012 1 10 55936 0.1288 0.2914 -0.38252 2012 1 11 55937 0.1279 0.2909 -0.38322 2012 1 12 55938 0.1269 0.2903 -0.38414 2012 1 13 55939 0.1260 0.2898 -0.38524 2012 1 14 55940 0.1250 0.2894 -0.38646 2012 1 15 55941 0.1240 0.2889 -0.38772 2012 1 16 55942 0.1231 0.2884 -0.38891 2012 1 17 55943 0.1221 0.2880 -0.38993 2012 1 18 55944 0.1211 0.2876 -0.39079 2012 1 19 55945 0.1202 0.2872 -0.39150 2012 1 20 55946 0.1192 0.2868 -0.39215 2012 1 21 55947 0.1182 0.2864 -0.39286 2012 1 22 55948 0.1173 0.2860 -0.39363 2012 1 23 55949 0.1163 0.2857 -0.39457 2012 1 24 55950 0.1154 0.2853 -0.39562 2012 1 25 55951 0.1144 0.2850 -0.39677 2012 1 26 55952 0.1134 0.2847 -0.39798 2012 1 27 55953 0.1125 0.2844 -0.39915 2012 1 28 55954 0.1115 0.2841 -0.40027 2012 1 29 55955 0.1106 0.2839 -0.40128 2012 1 30 55956 0.1096 0.2836 -0.40212 2012 1 31 55957 0.1087 0.2834 -0.40278 2012 2 1 55958 0.1077 0.2832 -0.40326 2012 2 2 55959 0.1068 0.2830 -0.40354 2012 2 3 55960 0.1059 0.2828 -0.40373 2012 2 4 55961 0.1049 0.2826 -0.40396 2012 2 5 55962 0.1040 0.2824 -0.40421 2012 2 6 55963 0.1031 0.2823 -0.40460 2012 2 7 55964 0.1022 0.2821 -0.40519 2012 2 8 55965 0.1013 0.2820 -0.40602 2012 2 9 55966 0.1003 0.2819 -0.40704 2012 2 10 55967 0.0994 0.2818 -0.40813 2012 2 11 55968 0.0985 0.2817 -0.40924 2012 2 12 55969 0.0977 0.2816 -0.41024 2012 2 13 55970 0.0968 0.2816 -0.41107 2012 2 14 55971 0.0959 0.2815 -0.41176 2012 2 15 55972 0.0950 0.2815 -0.41232 2012 2 16 55973 0.0942 0.2815 -0.41279 2012 2 17 55974 0.0933 0.2815 -0.41321 2012 2 18 55975 0.0925 0.2815 -0.41369 2012 2 19 55976 0.0916 0.2815 -0.41430 2012 2 20 55977 0.0908 0.2815 -0.41503 2012 2 21 55978 0.0899 0.2815 -0.41593 2012 2 22 55979 0.0891 0.2816 -0.41697 2012 2 23 55980 0.0883 0.2817 -0.41807 2012 2 24 55981 0.0875 0.2817 -0.41917 2012 2 25 55982 0.0867 0.2818 -0.42026 2012 2 26 55983 0.0859 0.2819 -0.42125 2012 2 27 55984 0.0851 0.2820 -0.42209 2012 2 28 55985 0.0844 0.2821 -0.42282 2012 2 29 55986 0.0836 0.2823 -0.42347 2012 3 1 55987 0.0829 0.2824 -0.42408 2012 3 2 55988 0.0821 0.2825 -0.42473 2012 3 3 55989 0.0814 0.2827 -0.42548 2012 3 4 55990 0.0807 0.2829 -0.42636 2012 3 5 55991 0.0800 0.2830 -0.42745 2012 3 6 55992 0.0792 0.2832 -0.42875 2012 3 7 55993 0.0786 0.2834 -0.43026 2012 3 8 55994 0.0779 0.2836 -0.43194 2012 3 9 55995 0.0772 0.2838 -0.43371 2012 3 10 55996 0.0765 0.2841 -0.43551 2012 3 11 55997 0.0759 0.2843 -0.43716 2012 3 12 55998 0.0752 0.2845 -0.43860 2012 3 13 55999 0.0746 0.2848 -0.43986 2012 3 14 56000 0.0740 0.2850 -0.44096 2012 3 15 56001 0.0734 0.2853 -0.44194 2012 3 16 56002 0.0728 0.2856 -0.44293 2012 3 17 56003 0.0722 0.2859 -0.44402 2012 3 18 56004 0.0716 0.2861 -0.44522 2012 3 19 56005 0.0710 0.2864 -0.44657 2012 3 20 56006 0.0705 0.2867 -0.44807 2012 3 21 56007 0.0699 0.2870 -0.44962 2012 3 22 56008 0.0694 0.2874 -0.45117 2012 3 23 56009 0.0689 0.2877 -0.45265 2012 3 24 56010 0.0684 0.2880 -0.45401 2012 3 25 56011 0.0679 0.2883 -0.45530 2012 3 26 56012 0.0674 0.2887 -0.45648 2012 3 27 56013 0.0669 0.2890 -0.45753 2012 3 28 56014 0.0664 0.2894 -0.45850 2012 3 29 56015 0.0660 0.2897 -0.45942 2012 3 30 56016 0.0656 0.2901 -0.46035 2012 3 31 56017 0.0651 0.2904 -0.46135 2012 4 1 56018 0.0647 0.2908 -0.46244 2012 4 2 56019 0.0643 0.2912 -0.46365 2012 4 3 56020 0.0639 0.2916 -0.46501 2012 4 4 56021 0.0635 0.2919 -0.46655 2012 4 5 56022 0.0631 0.2923 -0.46825 2012 4 6 56023 0.0628 0.2927 -0.47002 2012 4 7 56024 0.0624 0.2931 -0.47174 2012 4 8 56025 0.0621 0.2935 -0.47333 2012 4 9 56026 0.0617 0.2939 -0.47470 2012 4 10 56027 0.0614 0.2943 -0.47583 2012 4 11 56028 0.0611 0.2947 -0.47679 2012 4 12 56029 0.0608 0.2951 -0.47772 2012 4 13 56030 0.0605 0.2955 -0.47874 2012 4 14 56031 0.0603 0.2959 -0.47981 2012 4 15 56032 0.0600 0.2964 -0.48106 2012 4 16 56033 0.0597 0.2968 -0.48246 2012 4 17 56034 0.0595 0.2972 -0.48391 2012 4 18 56035 0.0593 0.2976 -0.48537 2012 4 19 56036 0.0590 0.2980 -0.48666 2012 4 20 56037 0.0588 0.2985 -0.48782 2012 4 21 56038 0.0586 0.2989 -0.48877 2012 4 22 56039 0.0584 0.2993 -0.48958 2012 4 23 56040 0.0583 0.2997 -0.49031 2012 4 24 56041 0.0581 0.3001 -0.49094 2012 4 25 56042 0.0579 0.3006 -0.49155 2012 4 26 56043 0.0578 0.3010 -0.49217 2012 4 27 56044 0.0576 0.3014 -0.49281 2012 4 28 56045 0.0575 0.3019 -0.49352 2012 4 29 56046 0.0574 0.3023 -0.49435 2012 4 30 56047 0.0573 0.3027 -0.49539 2012 5 1 56048 0.0572 0.3031 -0.49663 2012 5 2 56049 0.0571 0.3035 -0.49804 2012 5 3 56050 0.0570 0.3040 -0.49957 2012 5 4 56051 0.0569 0.3044 -0.50107 2012 5 5 56052 0.0569 0.3048 -0.50243 2012 5 6 56053 0.0568 0.3052 -0.50364 2012 5 7 56054 0.0568 0.3057 -0.50463 2012 5 8 56055 0.0567 0.3061 -0.50543 2012 5 9 56056 0.0567 0.3065 -0.50612 2012 5 10 56057 0.0567 0.3069 -0.50680 2012 5 11 56058 0.0567 0.3073 -0.50754 2012 5 12 56059 0.0567 0.3077 -0.50835 2012 5 13 56060 0.0567 0.3081 -0.50921 2012 5 14 56061 0.0567 0.3085 -0.51009 2012 5 15 56062 0.0567 0.3089 -0.51096 2012 5 16 56063 0.0567 0.3093 -0.51175 2012 5 17 56064 0.0567 0.3097 -0.51250 2012 5 18 56065 0.0568 0.3101 -0.51322 2012 5 19 56066 0.0568 0.3105 -0.51379 2012 5 20 56067 0.0569 0.3109 -0.51423 2012 5 21 56068 0.0569 0.3113 -0.51461 2012 5 22 56069 0.0570 0.3117 -0.51499 2012 5 23 56070 0.0571 0.3121 -0.51540 2012 5 24 56071 0.0571 0.3124 -0.51587 2012 5 25 56072 0.0572 0.3128 -0.51641 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) 55688 -65.55 0.35 -11.98 0.10 55689 -65.66 0.20 -12.03 0.34 55690 -65.76 0.20 -12.09 0.34 55691 -65.67 0.74 -12.12 0.34 55692 -65.43 0.27 -12.12 0.34 55693 -65.22 0.27 -12.02 0.34 55694 -65.27 0.27 -11.77 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55688 -0.245 0.139 -0.230 0.100 55689 -0.250 0.080 -0.216 0.340 55690 -0.257 0.080 -0.200 0.340 55691 -0.267 0.294 -0.183 0.340 55692 -0.292 0.107 -0.189 0.340 55693 -0.316 0.107 -0.207 0.340 55694 -0.333 0.107 -0.235 0.340 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).