********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 12 May 2011 Vol. XXIV No. 019 ______________________________________________________________________ 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 6 55687 -.04157 .00009 0.35345 .00010 -0.249376 0.000015 11 5 7 55688 -.04151 .00009 0.35543 .00010 -0.250215 0.000014 11 5 8 55689 -.04167 .00010 0.35733 .00010 -0.251111 0.000010 11 5 9 55690 -.04172 .00009 0.35905 .00010 -0.252138 0.000006 11 5 10 55691 -.04110 .00009 0.36080 .00010 -0.253372 0.000006 11 5 11 55692 -.03984 .00009 0.36291 .00010 -0.254822 0.000006 11 5 12 55693 -.03839 .00009 0.36545 .00009 -0.256444 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 = 0.0856 - 0.0838 cos A + 0.0785 sin A - 0.0376 cos C - 0.0393 sin C y = 0.3307 + 0.0715 cos A + 0.0758 sin A - 0.0393 cos C + 0.0376 sin C UT1-UTC = -0.2313 - 0.00064 (MJD - 55701) - (UT2-UT1) where A = 2*pi*(MJD-55693)/365.25 and C = 2*pi*(MJD-55693)/435. TAI-UTC(MJD 55694) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55693)**0.80 S t = 0.00025 (MJD-55693)**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 13 55694 -0.0373 0.3678 -0.25820 2011 5 14 55695 -0.0362 0.3703 -0.25999 2011 5 15 55696 -0.0353 0.3725 -0.26169 2011 5 16 55697 -0.0344 0.3745 -0.26320 2011 5 17 55698 -0.0335 0.3764 -0.26445 2011 5 18 55699 -0.0325 0.3782 -0.26547 2011 5 19 55700 -0.0314 0.3799 -0.26630 2011 5 20 55701 -0.0304 0.3816 -0.26708 2011 5 21 55702 -0.0292 0.3833 -0.26788 2011 5 22 55703 -0.0281 0.3850 -0.26879 2011 5 23 55704 -0.0270 0.3867 -0.26980 2011 5 24 55705 -0.0259 0.3883 -0.27087 2011 5 25 55706 -0.0247 0.3899 -0.27197 2011 5 26 55707 -0.0235 0.3915 -0.27305 2011 5 27 55708 -0.0224 0.3930 -0.27409 2011 5 28 55709 -0.0211 0.3945 -0.27504 2011 5 29 55710 -0.0199 0.3960 -0.27584 2011 5 30 55711 -0.0186 0.3974 -0.27646 2011 5 31 55712 -0.0173 0.3989 -0.27689 2011 6 1 55713 -0.0160 0.4003 -0.27716 2011 6 2 55714 -0.0147 0.4017 -0.27732 2011 6 3 55715 -0.0133 0.4031 -0.27742 2011 6 4 55716 -0.0120 0.4044 -0.27754 2011 6 5 55717 -0.0106 0.4058 -0.27776 2011 6 6 55718 -0.0092 0.4071 -0.27811 2011 6 7 55719 -0.0078 0.4084 -0.27863 2011 6 8 55720 -0.0063 0.4096 -0.27928 2011 6 9 55721 -0.0049 0.4109 -0.28003 2011 6 10 55722 -0.0034 0.4121 -0.28080 2011 6 11 55723 -0.0019 0.4133 -0.28147 2011 6 12 55724 -0.0004 0.4145 -0.28199 2011 6 13 55725 0.0011 0.4156 -0.28229 2011 6 14 55726 0.0026 0.4168 -0.28239 2011 6 15 55727 0.0042 0.4179 -0.28234 2011 6 16 55728 0.0057 0.4189 -0.28222 2011 6 17 55729 0.0073 0.4200 -0.28210 2011 6 18 55730 0.0089 0.4210 -0.28205 2011 6 19 55731 0.0105 0.4220 -0.28208 2011 6 20 55732 0.0121 0.4230 -0.28219 2011 6 21 55733 0.0137 0.4240 -0.28234 2011 6 22 55734 0.0153 0.4249 -0.28250 2011 6 23 55735 0.0170 0.4258 -0.28263 2011 6 24 55736 0.0186 0.4267 -0.28270 2011 6 25 55737 0.0203 0.4276 -0.28266 2011 6 26 55738 0.0220 0.4284 -0.28251 2011 6 27 55739 0.0237 0.4293 -0.28223 2011 6 28 55740 0.0253 0.4300 -0.28183 2011 6 29 55741 0.0270 0.4308 -0.28135 2011 6 30 55742 0.0287 0.4315 -0.28082 2011 7 1 55743 0.0305 0.4323 -0.28033 2011 7 2 55744 0.0322 0.4329 -0.27994 2011 7 3 55745 0.0339 0.4336 -0.27972 2011 7 4 55746 0.0356 0.4342 -0.27971 2011 7 5 55747 0.0374 0.4349 -0.27988 2011 7 6 55748 0.0391 0.4354 -0.28018 2011 7 7 55749 0.0408 0.4360 -0.28051 2011 7 8 55750 0.0426 0.4365 -0.28076 2011 7 9 55751 0.0443 0.4370 -0.28086 2011 7 10 55752 0.0461 0.4375 -0.28075 2011 7 11 55753 0.0478 0.4380 -0.28044 2011 7 12 55754 0.0496 0.4384 -0.27996 2011 7 13 55755 0.0513 0.4388 -0.27940 2011 7 14 55756 0.0531 0.4392 -0.27884 2011 7 15 55757 0.0549 0.4396 -0.27835 2011 7 16 55758 0.0566 0.4399 -0.27797 2011 7 17 55759 0.0584 0.4402 -0.27771 2011 7 18 55760 0.0601 0.4405 -0.27755 2011 7 19 55761 0.0619 0.4407 -0.27743 2011 7 20 55762 0.0636 0.4409 -0.27732 2011 7 21 55763 0.0654 0.4411 -0.27717 2011 7 22 55764 0.0671 0.4413 -0.27696 2011 7 23 55765 0.0689 0.4415 -0.27664 2011 7 24 55766 0.0706 0.4416 -0.27620 2011 7 25 55767 0.0723 0.4417 -0.27565 2011 7 26 55768 0.0741 0.4417 -0.27502 2011 7 27 55769 0.0758 0.4418 -0.27435 2011 7 28 55770 0.0775 0.4418 -0.27370 2011 7 29 55771 0.0792 0.4418 -0.27316 2011 7 30 55772 0.0809 0.4418 -0.27279 2011 7 31 55773 0.0826 0.4417 -0.27264 2011 8 1 55774 0.0843 0.4416 -0.27273 2011 8 2 55775 0.0860 0.4415 -0.27300 2011 8 3 55776 0.0877 0.4414 -0.27335 2011 8 4 55777 0.0894 0.4413 -0.27366 2011 8 5 55778 0.0910 0.4411 -0.27383 2011 8 6 55779 0.0927 0.4409 -0.27380 2011 8 7 55780 0.0943 0.4407 -0.27355 2011 8 8 55781 0.0960 0.4404 -0.27314 2011 8 9 55782 0.0976 0.4402 -0.27264 2011 8 10 55783 0.0992 0.4399 -0.27213 2011 8 11 55784 0.1008 0.4395 -0.27169 2011 8 12 55785 0.1024 0.4392 -0.27136 2011 8 13 55786 0.1040 0.4388 -0.27117 2011 8 14 55787 0.1055 0.4385 -0.27110 2011 8 15 55788 0.1071 0.4381 -0.27112 2011 8 16 55789 0.1086 0.4376 -0.27119 2011 8 17 55790 0.1102 0.4372 -0.27125 2011 8 18 55791 0.1117 0.4367 -0.27127 2011 8 19 55792 0.1132 0.4362 -0.27120 2011 8 20 55793 0.1147 0.4357 -0.27104 2011 8 21 55794 0.1161 0.4352 -0.27079 2011 8 22 55795 0.1176 0.4346 -0.27045 2011 8 23 55796 0.1190 0.4340 -0.27008 2011 8 24 55797 0.1205 0.4334 -0.26972 2011 8 25 55798 0.1219 0.4328 -0.26945 2011 8 26 55799 0.1233 0.4322 -0.26934 2011 8 27 55800 0.1247 0.4315 -0.26947 2011 8 28 55801 0.1260 0.4308 -0.26985 2011 8 29 55802 0.1274 0.4301 -0.27052 2011 8 30 55803 0.1287 0.4294 -0.27134 2011 8 31 55804 0.1300 0.4287 -0.27220 2011 9 1 55805 0.1313 0.4279 -0.27296 2011 9 2 55806 0.1326 0.4272 -0.27353 2011 9 3 55807 0.1338 0.4264 -0.27388 2011 9 4 55808 0.1351 0.4256 -0.27402 2011 9 5 55809 0.1363 0.4248 -0.27405 2011 9 6 55810 0.1375 0.4239 -0.27405 2011 9 7 55811 0.1387 0.4231 -0.27409 2011 9 8 55812 0.1398 0.4222 -0.27423 2011 9 9 55813 0.1410 0.4213 -0.27450 2011 9 10 55814 0.1421 0.4204 -0.27489 2011 9 11 55815 0.1432 0.4195 -0.27539 2011 9 12 55816 0.1443 0.4186 -0.27594 2011 9 13 55817 0.1454 0.4176 -0.27652 2011 9 14 55818 0.1464 0.4167 -0.27705 2011 9 15 55819 0.1474 0.4157 -0.27752 2011 9 16 55820 0.1484 0.4147 -0.27790 2011 9 17 55821 0.1494 0.4137 -0.27819 2011 9 18 55822 0.1504 0.4127 -0.27839 2011 9 19 55823 0.1513 0.4117 -0.27854 2011 9 20 55824 0.1522 0.4106 -0.27868 2011 9 21 55825 0.1531 0.4096 -0.27889 2011 9 22 55826 0.1540 0.4085 -0.27921 2011 9 23 55827 0.1549 0.4074 -0.27973 2011 9 24 55828 0.1557 0.4063 -0.28049 2011 9 25 55829 0.1565 0.4052 -0.28151 2011 9 26 55830 0.1573 0.4041 -0.28275 2011 9 27 55831 0.1581 0.4030 -0.28410 2011 9 28 55832 0.1588 0.4019 -0.28543 2011 9 29 55833 0.1595 0.4008 -0.28662 2011 9 30 55834 0.1602 0.3996 -0.28759 2011 10 1 55835 0.1609 0.3985 -0.28834 2011 10 2 55836 0.1616 0.3973 -0.28892 2011 10 3 55837 0.1622 0.3961 -0.28942 2011 10 4 55838 0.1628 0.3950 -0.28994 2011 10 5 55839 0.1634 0.3938 -0.29054 2011 10 6 55840 0.1639 0.3926 -0.29124 2011 10 7 55841 0.1645 0.3914 -0.29206 2011 10 8 55842 0.1650 0.3902 -0.29297 2011 10 9 55843 0.1655 0.3890 -0.29393 2011 10 10 55844 0.1660 0.3878 -0.29492 2011 10 11 55845 0.1664 0.3865 -0.29587 2011 10 12 55846 0.1669 0.3853 -0.29675 2011 10 13 55847 0.1673 0.3841 -0.29754 2011 10 14 55848 0.1677 0.3829 -0.29822 2011 10 15 55849 0.1680 0.3816 -0.29880 2011 10 16 55850 0.1684 0.3804 -0.29931 2011 10 17 55851 0.1687 0.3791 -0.29979 2011 10 18 55852 0.1690 0.3779 -0.30029 2011 10 19 55853 0.1693 0.3766 -0.30087 2011 10 20 55854 0.1695 0.3754 -0.30159 2011 10 21 55855 0.1697 0.3741 -0.30251 2011 10 22 55856 0.1699 0.3729 -0.30365 2011 10 23 55857 0.1701 0.3716 -0.30501 2011 10 24 55858 0.1703 0.3704 -0.30653 2011 10 25 55859 0.1704 0.3691 -0.30809 2011 10 26 55860 0.1706 0.3679 -0.30958 2011 10 27 55861 0.1707 0.3666 -0.31090 2011 10 28 55862 0.1707 0.3654 -0.31199 2011 10 29 55863 0.1708 0.3641 -0.31288 2011 10 30 55864 0.1708 0.3628 -0.31364 2011 10 31 55865 0.1708 0.3616 -0.31437 2011 11 1 55866 0.1708 0.3603 -0.31516 2011 11 2 55867 0.1708 0.3591 -0.31603 2011 11 3 55868 0.1708 0.3578 -0.31700 2011 11 4 55869 0.1707 0.3566 -0.31804 2011 11 5 55870 0.1706 0.3554 -0.31913 2011 11 6 55871 0.1705 0.3541 -0.32022 2011 11 7 55872 0.1704 0.3529 -0.32127 2011 11 8 55873 0.1702 0.3516 -0.32224 2011 11 9 55874 0.1700 0.3504 -0.32311 2011 11 10 55875 0.1699 0.3492 -0.32385 2011 11 11 55876 0.1697 0.3480 -0.32448 2011 11 12 55877 0.1694 0.3468 -0.32500 2011 11 13 55878 0.1692 0.3456 -0.32546 2011 11 14 55879 0.1689 0.3444 -0.32590 2011 11 15 55880 0.1686 0.3432 -0.32638 2011 11 16 55881 0.1683 0.3420 -0.32695 2011 11 17 55882 0.1680 0.3408 -0.32766 2011 11 18 55883 0.1677 0.3396 -0.32855 2011 11 19 55884 0.1673 0.3384 -0.32962 2011 11 20 55885 0.1669 0.3373 -0.33085 2011 11 21 55886 0.1666 0.3361 -0.33216 2011 11 22 55887 0.1662 0.3350 -0.33346 2011 11 23 55888 0.1657 0.3338 -0.33466 2011 11 24 55889 0.1653 0.3327 -0.33570 2011 11 25 55890 0.1648 0.3316 -0.33655 2011 11 26 55891 0.1644 0.3305 -0.33728 2011 11 27 55892 0.1639 0.3293 -0.33796 2011 11 28 55893 0.1634 0.3282 -0.33869 2011 11 29 55894 0.1628 0.3272 -0.33951 2011 11 30 55895 0.1623 0.3261 -0.34044 2011 12 1 55896 0.1618 0.3250 -0.34147 2011 12 2 55897 0.1612 0.3239 -0.34255 2011 12 3 55898 0.1606 0.3229 -0.34365 2011 12 4 55899 0.1600 0.3218 -0.34471 2011 12 5 55900 0.1594 0.3208 -0.34572 2011 12 6 55901 0.1588 0.3198 -0.34662 2011 12 7 55902 0.1582 0.3188 -0.34739 2011 12 8 55903 0.1575 0.3178 -0.34802 2011 12 9 55904 0.1569 0.3168 -0.34851 2011 12 10 55905 0.1562 0.3158 -0.34891 2011 12 11 55906 0.1555 0.3149 -0.34926 2011 12 12 55907 0.1548 0.3139 -0.34965 2011 12 13 55908 0.1541 0.3130 -0.35015 2011 12 14 55909 0.1534 0.3120 -0.35080 2011 12 15 55910 0.1527 0.3111 -0.35165 2011 12 16 55911 0.1519 0.3102 -0.35270 2011 12 17 55912 0.1512 0.3093 -0.35391 2011 12 18 55913 0.1504 0.3084 -0.35523 2011 12 19 55914 0.1497 0.3076 -0.35657 2011 12 20 55915 0.1489 0.3067 -0.35779 2011 12 21 55916 0.1481 0.3059 -0.35887 2011 12 22 55917 0.1473 0.3050 -0.35977 2011 12 23 55918 0.1465 0.3042 -0.36055 2011 12 24 55919 0.1457 0.3034 -0.36131 2011 12 25 55920 0.1449 0.3026 -0.36208 2011 12 26 55921 0.1441 0.3018 -0.36296 2011 12 27 55922 0.1432 0.3011 -0.36393 2011 12 28 55923 0.1424 0.3003 -0.36501 2011 12 29 55924 0.1415 0.2996 -0.36616 2011 12 30 55925 0.1407 0.2989 -0.36728 2011 12 31 55926 0.1398 0.2982 -0.36836 2012 1 1 55927 0.1390 0.2975 -0.36935 2012 1 2 55928 0.1381 0.2968 -0.37019 2012 1 3 55929 0.1372 0.2961 -0.37083 2012 1 4 55930 0.1363 0.2955 -0.37128 2012 1 5 55931 0.1354 0.2948 -0.37152 2012 1 6 55932 0.1346 0.2942 -0.37162 2012 1 7 55933 0.1337 0.2936 -0.37172 2012 1 8 55934 0.1328 0.2930 -0.37179 2012 1 9 55935 0.1319 0.2924 -0.37195 2012 1 10 55936 0.1310 0.2918 -0.37226 2012 1 11 55937 0.1300 0.2913 -0.37278 2012 1 12 55938 0.1291 0.2907 -0.37348 2012 1 13 55939 0.1282 0.2902 -0.37427 2012 1 14 55940 0.1273 0.2897 -0.37514 2012 1 15 55941 0.1264 0.2892 -0.37595 2012 1 16 55942 0.1255 0.2887 -0.37666 2012 1 17 55943 0.1246 0.2882 -0.37728 2012 1 18 55944 0.1236 0.2877 -0.37776 2012 1 19 55945 0.1227 0.2873 -0.37809 2012 1 20 55946 0.1218 0.2869 -0.37833 2012 1 21 55947 0.1209 0.2865 -0.37857 2012 1 22 55948 0.1200 0.2860 -0.37889 2012 1 23 55949 0.1191 0.2857 -0.37934 2012 1 24 55950 0.1181 0.2853 -0.37996 2012 1 25 55951 0.1172 0.2849 -0.38073 2012 1 26 55952 0.1163 0.2846 -0.38158 2012 1 27 55953 0.1154 0.2842 -0.38244 2012 1 28 55954 0.1145 0.2839 -0.38333 2012 1 29 55955 0.1136 0.2836 -0.38411 2012 1 30 55956 0.1127 0.2833 -0.38477 2012 1 31 55957 0.1118 0.2830 -0.38531 2012 2 1 55958 0.1109 0.2828 -0.38574 2012 2 2 55959 0.1100 0.2825 -0.38611 2012 2 3 55960 0.1091 0.2823 -0.38649 2012 2 4 55961 0.1082 0.2821 -0.38693 2012 2 5 55962 0.1073 0.2818 -0.38747 2012 2 6 55963 0.1064 0.2816 -0.38818 2012 2 7 55964 0.1055 0.2815 -0.38908 2012 2 8 55965 0.1047 0.2813 -0.39018 2012 2 9 55966 0.1038 0.2811 -0.39147 2012 2 10 55967 0.1029 0.2810 -0.39289 2012 2 11 55968 0.1021 0.2808 -0.39438 2012 2 12 55969 0.1012 0.2807 -0.39578 2012 2 13 55970 0.1004 0.2806 -0.39701 2012 2 14 55971 0.0995 0.2805 -0.39808 2012 2 15 55972 0.0987 0.2804 -0.39896 2012 2 16 55973 0.0979 0.2803 -0.39969 2012 2 17 55974 0.0971 0.2803 -0.40041 2012 2 18 55975 0.0962 0.2802 -0.40117 2012 2 19 55976 0.0954 0.2802 -0.40204 2012 2 20 55977 0.0946 0.2802 -0.40308 2012 2 21 55978 0.0938 0.2801 -0.40431 2012 2 22 55979 0.0930 0.2801 -0.40563 2012 2 23 55980 0.0923 0.2801 -0.40699 2012 2 24 55981 0.0915 0.2801 -0.40831 2012 2 25 55982 0.0907 0.2802 -0.40955 2012 2 26 55983 0.0900 0.2802 -0.41072 2012 2 27 55984 0.0892 0.2803 -0.41179 2012 2 28 55985 0.0885 0.2803 -0.41273 2012 2 29 55986 0.0878 0.2804 -0.41358 2012 3 1 55987 0.0870 0.2805 -0.41435 2012 3 2 55988 0.0863 0.2805 -0.41511 2012 3 3 55989 0.0856 0.2806 -0.41591 2012 3 4 55990 0.0849 0.2807 -0.41679 2012 3 5 55991 0.0842 0.2809 -0.41778 2012 3 6 55992 0.0836 0.2810 -0.41893 2012 3 7 55993 0.0829 0.2811 -0.42028 2012 3 8 55994 0.0822 0.2813 -0.42183 2012 3 9 55995 0.0816 0.2814 -0.42351 2012 3 10 55996 0.0810 0.2816 -0.42518 2012 3 11 55997 0.0803 0.2817 -0.42676 2012 3 12 55998 0.0797 0.2819 -0.42814 2012 3 13 55999 0.0791 0.2821 -0.42928 2012 3 14 56000 0.0785 0.2823 -0.43023 2012 3 15 56001 0.0779 0.2825 -0.43109 2012 3 16 56002 0.0773 0.2827 -0.43201 2012 3 17 56003 0.0768 0.2829 -0.43298 2012 3 18 56004 0.0762 0.2831 -0.43415 2012 3 19 56005 0.0757 0.2834 -0.43551 2012 3 20 56006 0.0751 0.2836 -0.43697 2012 3 21 56007 0.0746 0.2838 -0.43849 2012 3 22 56008 0.0741 0.2841 -0.43992 2012 3 23 56009 0.0736 0.2843 -0.44125 2012 3 24 56010 0.0731 0.2846 -0.44240 2012 3 25 56011 0.0726 0.2849 -0.44342 2012 3 26 56012 0.0721 0.2851 -0.44436 2012 3 27 56013 0.0716 0.2854 -0.44520 2012 3 28 56014 0.0712 0.2857 -0.44600 2012 3 29 56015 0.0707 0.2860 -0.44678 2012 3 30 56016 0.0703 0.2863 -0.44757 2012 3 31 56017 0.0699 0.2866 -0.44841 2012 4 1 56018 0.0695 0.2869 -0.44937 2012 4 2 56019 0.0691 0.2872 -0.45054 2012 4 3 56020 0.0687 0.2875 -0.45195 2012 4 4 56021 0.0683 0.2878 -0.45358 2012 4 5 56022 0.0679 0.2881 -0.45538 2012 4 6 56023 0.0676 0.2884 -0.45722 2012 4 7 56024 0.0672 0.2887 -0.45896 2012 4 8 56025 0.0669 0.2891 -0.46057 2012 4 9 56026 0.0666 0.2894 -0.46195 2012 4 10 56027 0.0663 0.2897 -0.46311 2012 4 11 56028 0.0659 0.2901 -0.46411 2012 4 12 56029 0.0657 0.2904 -0.46508 2012 4 13 56030 0.0654 0.2908 -0.46606 2012 4 14 56031 0.0651 0.2911 -0.46712 2012 4 15 56032 0.0648 0.2914 -0.46826 2012 4 16 56033 0.0646 0.2918 -0.46946 2012 4 17 56034 0.0643 0.2921 -0.47071 2012 4 18 56035 0.0641 0.2925 -0.47193 2012 4 19 56036 0.0639 0.2929 -0.47316 2012 4 20 56037 0.0636 0.2932 -0.47440 2012 4 21 56038 0.0634 0.2936 -0.47551 2012 4 22 56039 0.0632 0.2939 -0.47649 2012 4 23 56040 0.0631 0.2943 -0.47740 2012 4 24 56041 0.0629 0.2946 -0.47828 2012 4 25 56042 0.0627 0.2950 -0.47918 2012 4 26 56043 0.0626 0.2954 -0.48010 2012 4 27 56044 0.0624 0.2957 -0.48106 2012 4 28 56045 0.0623 0.2961 -0.48212 2012 4 29 56046 0.0621 0.2964 -0.48329 2012 4 30 56047 0.0620 0.2968 -0.48461 2012 5 1 56048 0.0619 0.2972 -0.48606 2012 5 2 56049 0.0618 0.2975 -0.48770 2012 5 3 56050 0.0617 0.2979 -0.48945 2012 5 4 56051 0.0616 0.2982 -0.49124 2012 5 5 56052 0.0615 0.2986 -0.49297 2012 5 6 56053 0.0614 0.2989 -0.49453 2012 5 7 56054 0.0614 0.2993 -0.49590 2012 5 8 56055 0.0613 0.2997 -0.49711 2012 5 9 56056 0.0613 0.3000 -0.49824 2012 5 10 56057 0.0612 0.3004 -0.49944 2012 5 11 56058 0.0612 0.3007 -0.50081 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) 55672 -65.79 0.17 -11.33 0.34 55673 -65.44 0.17 -11.43 0.34 55674 -65.11 0.74 -11.54 0.34 55675 -65.13 0.74 -11.56 0.34 55676 -65.56 0.74 -11.47 0.34 55677 -66.00 0.74 -11.40 0.34 55678 -66.01 0.74 -11.41 0.34 55679 -65.62 0.74 -11.42 0.34 55680 -65.27 0.74 -11.31 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55672 -0.209 0.068 -0.228 0.340 55673 -0.200 0.068 -0.252 0.340 55674 -0.180 0.294 -0.270 0.340 55675 -0.160 0.294 -0.254 0.340 55676 -0.153 0.294 -0.198 0.340 55677 -0.164 0.294 -0.149 0.340 55678 -0.179 0.294 -0.128 0.340 55679 -0.192 0.294 -0.129 0.340 55680 -0.217 0.294 -0.107 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).