********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 17 March 2011 Vol. XXIV No. 011 ______________________________________________________________________ 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 = -0.2 seconds beginning 6 January 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 3 11 55631 -.00884 .00010 0.24427 .00009 -0.188415 0.000017 11 3 12 55632 -.01022 .00010 0.24620 .00009 -0.189120 0.000016 11 3 13 55633 -.01172 .00010 0.24804 .00010 -0.189702 0.000014 11 3 14 55634 -.01344 .00010 0.24960 .00010 -0.190300 0.000010 11 3 15 55635 -.01519 .00010 0.25065 .00009 -0.191032 0.000009 11 3 16 55636 -.01678 .00010 0.25173 .00009 -0.191997 0.000008 11 3 17 55637 -.01837 .00010 0.25312 .00009 -0.193243 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 = 0.0951 - 0.1042 cos A - 0.0448 sin A - 0.0141 cos C - 0.0400 sin C y = 0.3344 - 0.0378 cos A + 0.0945 sin A - 0.0400 cos C + 0.0141 sin C UT1-UTC = -0.1806 - 0.00065 (MJD - 55645) - (UT2-UT1) where A = 2*pi*(MJD-55637)/365.25 and C = 2*pi*(MJD-55637)/435. TAI-UTC(MJD 55638) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55637)**0.80 S t = 0.00025 (MJD-55637)**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 3 18 55638 -0.0197 0.2544 -0.19476 2011 3 19 55639 -0.0210 0.2560 -0.19642 2011 3 20 55640 -0.0223 0.2576 -0.19809 2011 3 21 55641 -0.0234 0.2592 -0.19966 2011 3 22 55642 -0.0245 0.2608 -0.20104 2011 3 23 55643 -0.0255 0.2624 -0.20219 2011 3 24 55644 -0.0264 0.2641 -0.20312 2011 3 25 55645 -0.0272 0.2657 -0.20389 2011 3 26 55646 -0.0281 0.2674 -0.20461 2011 3 27 55647 -0.0288 0.2690 -0.20534 2011 3 28 55648 -0.0296 0.2707 -0.20612 2011 3 29 55649 -0.0303 0.2725 -0.20699 2011 3 30 55650 -0.0309 0.2742 -0.20796 2011 3 31 55651 -0.0315 0.2759 -0.20903 2011 4 1 55652 -0.0321 0.2777 -0.21017 2011 4 2 55653 -0.0326 0.2794 -0.21137 2011 4 3 55654 -0.0331 0.2812 -0.21256 2011 4 4 55655 -0.0336 0.2830 -0.21370 2011 4 5 55656 -0.0340 0.2848 -0.21474 2011 4 6 55657 -0.0344 0.2866 -0.21567 2011 4 7 55658 -0.0347 0.2884 -0.21647 2011 4 8 55659 -0.0351 0.2902 -0.21716 2011 4 9 55660 -0.0354 0.2920 -0.21782 2011 4 10 55661 -0.0356 0.2938 -0.21851 2011 4 11 55662 -0.0359 0.2956 -0.21931 2011 4 12 55663 -0.0361 0.2975 -0.22028 2011 4 13 55664 -0.0362 0.2993 -0.22148 2011 4 14 55665 -0.0363 0.3011 -0.22292 2011 4 15 55666 -0.0365 0.3029 -0.22456 2011 4 16 55667 -0.0365 0.3048 -0.22628 2011 4 17 55668 -0.0366 0.3066 -0.22797 2011 4 18 55669 -0.0366 0.3084 -0.22948 2011 4 19 55670 -0.0365 0.3103 -0.23074 2011 4 20 55671 -0.0365 0.3121 -0.23175 2011 4 21 55672 -0.0364 0.3139 -0.23256 2011 4 22 55673 -0.0363 0.3158 -0.23326 2011 4 23 55674 -0.0361 0.3176 -0.23396 2011 4 24 55675 -0.0360 0.3194 -0.23471 2011 4 25 55676 -0.0358 0.3212 -0.23553 2011 4 26 55677 -0.0355 0.3231 -0.23644 2011 4 27 55678 -0.0353 0.3249 -0.23742 2011 4 28 55679 -0.0350 0.3267 -0.23844 2011 4 29 55680 -0.0346 0.3285 -0.23948 2011 4 30 55681 -0.0343 0.3303 -0.24049 2011 5 1 55682 -0.0339 0.3321 -0.24142 2011 5 2 55683 -0.0335 0.3339 -0.24224 2011 5 3 55684 -0.0331 0.3356 -0.24292 2011 5 4 55685 -0.0326 0.3374 -0.24347 2011 5 5 55686 -0.0321 0.3392 -0.24392 2011 5 6 55687 -0.0316 0.3409 -0.24430 2011 5 7 55688 -0.0310 0.3427 -0.24467 2011 5 8 55689 -0.0304 0.3444 -0.24510 2011 5 9 55690 -0.0298 0.3461 -0.24566 2011 5 10 55691 -0.0292 0.3478 -0.24639 2011 5 11 55692 -0.0285 0.3495 -0.24732 2011 5 12 55693 -0.0278 0.3512 -0.24843 2011 5 13 55694 -0.0271 0.3529 -0.24964 2011 5 14 55695 -0.0264 0.3546 -0.25086 2011 5 15 55696 -0.0256 0.3563 -0.25196 2011 5 16 55697 -0.0248 0.3579 -0.25286 2011 5 17 55698 -0.0240 0.3595 -0.25351 2011 5 18 55699 -0.0232 0.3612 -0.25395 2011 5 19 55700 -0.0223 0.3628 -0.25424 2011 5 20 55701 -0.0214 0.3644 -0.25448 2011 5 21 55702 -0.0205 0.3660 -0.25475 2011 5 22 55703 -0.0196 0.3675 -0.25510 2011 5 23 55704 -0.0186 0.3691 -0.25554 2011 5 24 55705 -0.0176 0.3706 -0.25606 2011 5 25 55706 -0.0166 0.3721 -0.25661 2011 5 26 55707 -0.0156 0.3736 -0.25718 2011 5 27 55708 -0.0146 0.3751 -0.25772 2011 5 28 55709 -0.0135 0.3766 -0.25818 2011 5 29 55710 -0.0124 0.3781 -0.25854 2011 5 30 55711 -0.0113 0.3795 -0.25877 2011 5 31 55712 -0.0102 0.3809 -0.25887 2011 6 1 55713 -0.0090 0.3823 -0.25885 2011 6 2 55714 -0.0078 0.3837 -0.25876 2011 6 3 55715 -0.0066 0.3851 -0.25865 2011 6 4 55716 -0.0054 0.3864 -0.25859 2011 6 5 55717 -0.0042 0.3878 -0.25864 2011 6 6 55718 -0.0030 0.3891 -0.25886 2011 6 7 55719 -0.0017 0.3904 -0.25926 2011 6 8 55720 -0.0004 0.3916 -0.25983 2011 6 9 55721 0.0009 0.3929 -0.26050 2011 6 10 55722 0.0022 0.3941 -0.26119 2011 6 11 55723 0.0035 0.3953 -0.26181 2011 6 12 55724 0.0049 0.3965 -0.26225 2011 6 13 55725 0.0062 0.3977 -0.26249 2011 6 14 55726 0.0076 0.3989 -0.26251 2011 6 15 55727 0.0090 0.4000 -0.26238 2011 6 16 55728 0.0104 0.4011 -0.26218 2011 6 17 55729 0.0118 0.4022 -0.26200 2011 6 18 55730 0.0132 0.4032 -0.26189 2011 6 19 55731 0.0147 0.4043 -0.26188 2011 6 20 55732 0.0161 0.4053 -0.26196 2011 6 21 55733 0.0176 0.4063 -0.26210 2011 6 22 55734 0.0190 0.4073 -0.26226 2011 6 23 55735 0.0205 0.4082 -0.26240 2011 6 24 55736 0.0220 0.4092 -0.26247 2011 6 25 55737 0.0235 0.4101 -0.26243 2011 6 26 55738 0.0251 0.4109 -0.26227 2011 6 27 55739 0.0266 0.4118 -0.26197 2011 6 28 55740 0.0281 0.4126 -0.26155 2011 6 29 55741 0.0297 0.4134 -0.26105 2011 6 30 55742 0.0312 0.4142 -0.26051 2011 7 1 55743 0.0328 0.4150 -0.26000 2011 7 2 55744 0.0343 0.4157 -0.25960 2011 7 3 55745 0.0359 0.4165 -0.25937 2011 7 4 55746 0.0375 0.4171 -0.25933 2011 7 5 55747 0.0391 0.4178 -0.25948 2011 7 6 55748 0.0407 0.4185 -0.25975 2011 7 7 55749 0.0423 0.4191 -0.26006 2011 7 8 55750 0.0439 0.4197 -0.26029 2011 7 9 55751 0.0455 0.4202 -0.26037 2011 7 10 55752 0.0471 0.4208 -0.26026 2011 7 11 55753 0.0487 0.4213 -0.25994 2011 7 12 55754 0.0503 0.4218 -0.25946 2011 7 13 55755 0.0519 0.4223 -0.25891 2011 7 14 55756 0.0535 0.4227 -0.25835 2011 7 15 55757 0.0551 0.4232 -0.25786 2011 7 16 55758 0.0567 0.4236 -0.25748 2011 7 17 55759 0.0584 0.4239 -0.25722 2011 7 18 55760 0.0600 0.4243 -0.25706 2011 7 19 55761 0.0616 0.4246 -0.25696 2011 7 20 55762 0.0632 0.4249 -0.25687 2011 7 21 55763 0.0648 0.4252 -0.25673 2011 7 22 55764 0.0664 0.4254 -0.25653 2011 7 23 55765 0.0680 0.4257 -0.25622 2011 7 24 55766 0.0696 0.4259 -0.25580 2011 7 25 55767 0.0712 0.4261 -0.25528 2011 7 26 55768 0.0728 0.4262 -0.25467 2011 7 27 55769 0.0744 0.4264 -0.25403 2011 7 28 55770 0.0760 0.4265 -0.25341 2011 7 29 55771 0.0776 0.4266 -0.25290 2011 7 30 55772 0.0792 0.4266 -0.25257 2011 7 31 55773 0.0808 0.4267 -0.25246 2011 8 1 55774 0.0823 0.4267 -0.25259 2011 8 2 55775 0.0839 0.4267 -0.25291 2011 8 3 55776 0.0855 0.4266 -0.25331 2011 8 4 55777 0.0870 0.4266 -0.25367 2011 8 5 55778 0.0885 0.4265 -0.25390 2011 8 6 55779 0.0901 0.4264 -0.25392 2011 8 7 55780 0.0916 0.4263 -0.25373 2011 8 8 55781 0.0931 0.4261 -0.25339 2011 8 9 55782 0.0946 0.4259 -0.25295 2011 8 10 55783 0.0961 0.4258 -0.25250 2011 8 11 55784 0.0976 0.4255 -0.25211 2011 8 12 55785 0.0991 0.4253 -0.25184 2011 8 13 55786 0.1006 0.4250 -0.25170 2011 8 14 55787 0.1020 0.4248 -0.25169 2011 8 15 55788 0.1035 0.4245 -0.25176 2011 8 16 55789 0.1049 0.4241 -0.25188 2011 8 17 55790 0.1063 0.4238 -0.25200 2011 8 18 55791 0.1078 0.4234 -0.25206 2011 8 19 55792 0.1092 0.4230 -0.25205 2011 8 20 55793 0.1105 0.4226 -0.25193 2011 8 21 55794 0.1119 0.4222 -0.25172 2011 8 22 55795 0.1133 0.4218 -0.25144 2011 8 23 55796 0.1146 0.4213 -0.25111 2011 8 24 55797 0.1160 0.4208 -0.25079 2011 8 25 55798 0.1173 0.4203 -0.25056 2011 8 26 55799 0.1186 0.4198 -0.25049 2011 8 27 55800 0.1199 0.4192 -0.25065 2011 8 28 55801 0.1212 0.4187 -0.25106 2011 8 29 55802 0.1224 0.4181 -0.25171 2011 8 30 55803 0.1237 0.4175 -0.25253 2011 8 31 55804 0.1249 0.4169 -0.25338 2011 9 1 55805 0.1261 0.4162 -0.25414 2011 9 2 55806 0.1273 0.4156 -0.25471 2011 9 3 55807 0.1285 0.4149 -0.25506 2011 9 4 55808 0.1297 0.4142 -0.25521 2011 9 5 55809 0.1308 0.4135 -0.25525 2011 9 6 55810 0.1319 0.4128 -0.25525 2011 9 7 55811 0.1330 0.4120 -0.25531 2011 9 8 55812 0.1341 0.4113 -0.25547 2011 9 9 55813 0.1352 0.4105 -0.25575 2011 9 10 55814 0.1363 0.4097 -0.25616 2011 9 11 55815 0.1373 0.4089 -0.25668 2011 9 12 55816 0.1384 0.4081 -0.25725 2011 9 13 55817 0.1394 0.4073 -0.25784 2011 9 14 55818 0.1403 0.4064 -0.25840 2011 9 15 55819 0.1413 0.4056 -0.25889 2011 9 16 55820 0.1423 0.4047 -0.25929 2011 9 17 55821 0.1432 0.4038 -0.25959 2011 9 18 55822 0.1441 0.4029 -0.25982 2011 9 19 55823 0.1450 0.4020 -0.26000 2011 9 20 55824 0.1459 0.4011 -0.26017 2011 9 21 55825 0.1467 0.4002 -0.26041 2011 9 22 55826 0.1476 0.3992 -0.26078 2011 9 23 55827 0.1484 0.3983 -0.26134 2011 9 24 55828 0.1492 0.3973 -0.26216 2011 9 25 55829 0.1499 0.3963 -0.26324 2011 9 26 55830 0.1507 0.3953 -0.26453 2011 9 27 55831 0.1514 0.3943 -0.26593 2011 9 28 55832 0.1521 0.3933 -0.26729 2011 9 29 55833 0.1528 0.3923 -0.26848 2011 9 30 55834 0.1535 0.3913 -0.26942 2011 10 1 55835 0.1542 0.3902 -0.27010 2011 10 2 55836 0.1548 0.3892 -0.27058 2011 10 3 55837 0.1554 0.3881 -0.27094 2011 10 4 55838 0.1560 0.3871 -0.27129 2011 10 5 55839 0.1566 0.3860 -0.27171 2011 10 6 55840 0.1571 0.3849 -0.27224 2011 10 7 55841 0.1576 0.3838 -0.27290 2011 10 8 55842 0.1581 0.3827 -0.27367 2011 10 9 55843 0.1586 0.3816 -0.27455 2011 10 10 55844 0.1591 0.3805 -0.27547 2011 10 11 55845 0.1595 0.3794 -0.27639 2011 10 12 55846 0.1600 0.3783 -0.27727 2011 10 13 55847 0.1604 0.3772 -0.27807 2011 10 14 55848 0.1607 0.3760 -0.27879 2011 10 15 55849 0.1611 0.3749 -0.27943 2011 10 16 55850 0.1614 0.3738 -0.28003 2011 10 17 55851 0.1618 0.3726 -0.28063 2011 10 18 55852 0.1621 0.3715 -0.28127 2011 10 19 55853 0.1623 0.3704 -0.28199 2011 10 20 55854 0.1626 0.3692 -0.28285 2011 10 21 55855 0.1628 0.3681 -0.28391 2011 10 22 55856 0.1631 0.3669 -0.28522 2011 10 23 55857 0.1633 0.3658 -0.28673 2011 10 24 55858 0.1634 0.3646 -0.28838 2011 10 25 55859 0.1636 0.3634 -0.29009 2011 10 26 55860 0.1637 0.3623 -0.29172 2011 10 27 55861 0.1639 0.3611 -0.29313 2011 10 28 55862 0.1640 0.3600 -0.29433 2011 10 29 55863 0.1640 0.3588 -0.29534 2011 10 30 55864 0.1641 0.3576 -0.29623 2011 10 31 55865 0.1641 0.3565 -0.29713 2011 11 1 55866 0.1642 0.3553 -0.29814 2011 11 2 55867 0.1642 0.3542 -0.29925 2011 11 3 55868 0.1641 0.3530 -0.30044 2011 11 4 55869 0.1641 0.3519 -0.30169 2011 11 5 55870 0.1640 0.3507 -0.30296 2011 11 6 55871 0.1640 0.3496 -0.30427 2011 11 7 55872 0.1639 0.3484 -0.30556 2011 11 8 55873 0.1638 0.3473 -0.30674 2011 11 9 55874 0.1636 0.3461 -0.30782 2011 11 10 55875 0.1635 0.3450 -0.30878 2011 11 11 55876 0.1633 0.3439 -0.30960 2011 11 12 55877 0.1631 0.3427 -0.31034 2011 11 13 55878 0.1629 0.3416 -0.31097 2011 11 14 55879 0.1627 0.3405 -0.31155 2011 11 15 55880 0.1625 0.3394 -0.31212 2011 11 16 55881 0.1622 0.3383 -0.31278 2011 11 17 55882 0.1620 0.3372 -0.31361 2011 11 18 55883 0.1617 0.3361 -0.31466 2011 11 19 55884 0.1614 0.3350 -0.31591 2011 11 20 55885 0.1611 0.3339 -0.31733 2011 11 21 55886 0.1607 0.3328 -0.31883 2011 11 22 55887 0.1604 0.3317 -0.32025 2011 11 23 55888 0.1600 0.3306 -0.32151 2011 11 24 55889 0.1597 0.3296 -0.32257 2011 11 25 55890 0.1593 0.3285 -0.32347 2011 11 26 55891 0.1589 0.3275 -0.32420 2011 11 27 55892 0.1584 0.3264 -0.32495 2011 11 28 55893 0.1580 0.3254 -0.32580 2011 11 29 55894 0.1576 0.3244 -0.32675 2011 11 30 55895 0.1571 0.3234 -0.32781 2011 12 1 55896 0.1566 0.3224 -0.32884 2011 12 2 55897 0.1561 0.3214 -0.32987 2011 12 3 55898 0.1556 0.3204 -0.33081 2011 12 4 55899 0.1551 0.3194 -0.33170 2011 12 5 55900 0.1546 0.3184 -0.33254 2011 12 6 55901 0.1540 0.3175 -0.33328 2011 12 7 55902 0.1535 0.3165 -0.33394 2011 12 8 55903 0.1529 0.3156 -0.33450 2011 12 9 55904 0.1523 0.3146 -0.33494 2011 12 10 55905 0.1517 0.3137 -0.33530 2011 12 11 55906 0.1511 0.3128 -0.33561 2011 12 12 55907 0.1505 0.3119 -0.33600 2011 12 13 55908 0.1499 0.3110 -0.33651 2011 12 14 55909 0.1493 0.3101 -0.33719 2011 12 15 55910 0.1486 0.3092 -0.33806 2011 12 16 55911 0.1480 0.3084 -0.33909 2011 12 17 55912 0.1473 0.3075 -0.34023 2011 12 18 55913 0.1467 0.3067 -0.34148 2011 12 19 55914 0.1460 0.3059 -0.34270 2011 12 20 55915 0.1453 0.3051 -0.34379 2011 12 21 55916 0.1446 0.3043 -0.34469 2011 12 22 55917 0.1439 0.3035 -0.34540 2011 12 23 55918 0.1432 0.3027 -0.34595 2011 12 24 55919 0.1425 0.3019 -0.34640 2011 12 25 55920 0.1418 0.3012 -0.34684 2011 12 26 55921 0.1410 0.3004 -0.34735 2011 12 27 55922 0.1403 0.2997 -0.34798 2011 12 28 55923 0.1395 0.2990 -0.34871 2011 12 29 55924 0.1388 0.2983 -0.34956 2011 12 30 55925 0.1380 0.2976 -0.35053 2011 12 31 55926 0.1373 0.2969 -0.35146 2012 1 1 55927 0.1365 0.2962 -0.35233 2012 1 2 55928 0.1357 0.2956 -0.35314 2012 1 3 55929 0.1350 0.2949 -0.35391 2012 1 4 55930 0.1342 0.2943 -0.35463 2012 1 5 55931 0.1334 0.2937 -0.35528 2012 1 6 55932 0.1326 0.2931 -0.35586 2012 1 7 55933 0.1318 0.2925 -0.35642 2012 1 8 55934 0.1310 0.2919 -0.35698 2012 1 9 55935 0.1302 0.2913 -0.35761 2012 1 10 55936 0.1294 0.2908 -0.35834 2012 1 11 55937 0.1286 0.2902 -0.35930 2012 1 12 55938 0.1278 0.2897 -0.36047 2012 1 13 55939 0.1270 0.2892 -0.36183 2012 1 14 55940 0.1262 0.2887 -0.36333 2012 1 15 55941 0.1254 0.2882 -0.36486 2012 1 16 55942 0.1246 0.2877 -0.36631 2012 1 17 55943 0.1238 0.2872 -0.36761 2012 1 18 55944 0.1230 0.2868 -0.36874 2012 1 19 55945 0.1222 0.2864 -0.36977 2012 1 20 55946 0.1214 0.2859 -0.37082 2012 1 21 55947 0.1205 0.2855 -0.37190 2012 1 22 55948 0.1197 0.2851 -0.37295 2012 1 23 55949 0.1189 0.2847 -0.37410 2012 1 24 55950 0.1181 0.2844 -0.37540 2012 1 25 55951 0.1173 0.2840 -0.37685 2012 1 26 55952 0.1165 0.2837 -0.37840 2012 1 27 55953 0.1157 0.2833 -0.37994 2012 1 28 55954 0.1149 0.2830 -0.38138 2012 1 29 55955 0.1141 0.2827 -0.38272 2012 1 30 55956 0.1133 0.2824 -0.38392 2012 1 31 55957 0.1125 0.2821 -0.38494 2012 2 1 55958 0.1117 0.2818 -0.38583 2012 2 2 55959 0.1109 0.2816 -0.38660 2012 2 3 55960 0.1101 0.2813 -0.38730 2012 2 4 55961 0.1094 0.2811 -0.38806 2012 2 5 55962 0.1086 0.2809 -0.38891 2012 2 6 55963 0.1078 0.2807 -0.38988 2012 2 7 55964 0.1070 0.2805 -0.39098 2012 2 8 55965 0.1063 0.2803 -0.39218 2012 2 9 55966 0.1055 0.2801 -0.39346 2012 2 10 55967 0.1048 0.2799 -0.39475 2012 2 11 55968 0.1040 0.2798 -0.39603 2012 2 12 55969 0.1033 0.2797 -0.39725 2012 2 13 55970 0.1025 0.2795 -0.39837 2012 2 14 55971 0.1018 0.2794 -0.39937 2012 2 15 55972 0.1011 0.2793 -0.40030 2012 2 16 55973 0.1003 0.2792 -0.40119 2012 2 17 55974 0.0996 0.2791 -0.40211 2012 2 18 55975 0.0989 0.2791 -0.40315 2012 2 19 55976 0.0982 0.2790 -0.40433 2012 2 20 55977 0.0975 0.2789 -0.40566 2012 2 21 55978 0.0968 0.2789 -0.40707 2012 2 22 55979 0.0961 0.2789 -0.40850 2012 2 23 55980 0.0955 0.2789 -0.40998 2012 2 24 55981 0.0948 0.2788 -0.41145 2012 2 25 55982 0.0941 0.2788 -0.41290 2012 2 26 55983 0.0935 0.2789 -0.41426 2012 2 27 55984 0.0928 0.2789 -0.41550 2012 2 28 55985 0.0922 0.2789 -0.41664 2012 2 29 55986 0.0916 0.2789 -0.41771 2012 3 1 55987 0.0909 0.2790 -0.41875 2012 3 2 55988 0.0903 0.2790 -0.41976 2012 3 3 55989 0.0897 0.2791 -0.42083 2012 3 4 55990 0.0891 0.2792 -0.42199 2012 3 5 55991 0.0885 0.2793 -0.42329 2012 3 6 55992 0.0880 0.2794 -0.42473 2012 3 7 55993 0.0874 0.2795 -0.42638 2012 3 8 55994 0.0868 0.2796 -0.42817 2012 3 9 55995 0.0863 0.2797 -0.43008 2012 3 10 55996 0.0857 0.2798 -0.43199 2012 3 11 55997 0.0852 0.2799 -0.43375 2012 3 12 55998 0.0847 0.2801 -0.43530 2012 3 13 55999 0.0841 0.2802 -0.43663 2012 3 14 56000 0.0836 0.2804 -0.43776 2012 3 15 56001 0.0831 0.2805 -0.43878 2012 3 16 56002 0.0827 0.2807 -0.43979 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) 55618 -67.44 0.27 -8.77 0.29 55619 -67.50 0.28 -8.88 0.14 55620 -67.62 0.28 -8.86 0.14 55621 -67.63 0.29 -8.80 0.34 55622 -67.46 0.33 -8.73 0.34 55623 -67.19 0.33 -8.60 0.34 55624 -66.94 0.33 -8.41 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55618 -0.027 0.107 -0.432 0.290 55619 -0.001 0.111 -0.417 0.140 55620 0.012 0.111 -0.388 0.140 55621 0.018 0.115 -0.357 0.340 55622 0.024 0.131 -0.337 0.340 55623 0.032 0.131 -0.316 0.340 55624 0.034 0.131 -0.277 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.