********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 31 March 2011 Vol. XXIV No. 013 ______________________________________________________________________ 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 25 55645 -.02716 .00010 0.26704 .00009 -0.203554 0.000035 11 3 26 55646 -.02748 .00010 0.26891 .00009 -0.204415 0.000028 11 3 27 55647 -.02831 .00010 0.27079 .00009 -0.205297 0.000023 11 3 28 55648 -.02932 .00009 0.27261 .00009 -0.206322 0.000017 11 3 29 55649 -.03020 .00010 0.27427 .00009 -0.207516 0.000014 11 3 30 55650 -.03089 .00010 0.27578 .00009 -0.208837 0.000013 11 3 31 55651 -.03174 .00010 0.27748 .00009 -0.210235 0.000006 _______________________________________________________________________ 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 = 0.0968 - 0.1116 cos A - 0.0163 sin A - 0.0198 cos C - 0.0382 sin C y = 0.3302 - 0.0119 cos A + 0.1016 sin A - 0.0382 cos C + 0.0198 sin C UT1-UTC = -0.1924 - 0.00064 (MJD - 55659) - (UT2-UT1) where A = 2*pi*(MJD-55651)/365.25 and C = 2*pi*(MJD-55651)/435. TAI-UTC(MJD 55652) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55651)**0.80 S t = 0.00025 (MJD-55651)**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 4 1 55652 -0.0323 0.2791 -0.21170 2011 4 2 55653 -0.0331 0.2808 -0.21319 2011 4 3 55654 -0.0337 0.2826 -0.21462 2011 4 4 55655 -0.0343 0.2843 -0.21593 2011 4 5 55656 -0.0348 0.2861 -0.21709 2011 4 6 55657 -0.0353 0.2879 -0.21808 2011 4 7 55658 -0.0357 0.2897 -0.21892 2011 4 8 55659 -0.0361 0.2915 -0.21967 2011 4 9 55660 -0.0364 0.2933 -0.22037 2011 4 10 55661 -0.0367 0.2951 -0.22114 2011 4 11 55662 -0.0370 0.2969 -0.22206 2011 4 12 55663 -0.0372 0.2987 -0.22320 2011 4 13 55664 -0.0374 0.3005 -0.22458 2011 4 14 55665 -0.0376 0.3023 -0.22622 2011 4 15 55666 -0.0377 0.3041 -0.22803 2011 4 16 55667 -0.0378 0.3059 -0.22990 2011 4 17 55668 -0.0378 0.3077 -0.23169 2011 4 18 55669 -0.0378 0.3096 -0.23326 2011 4 19 55670 -0.0378 0.3114 -0.23454 2011 4 20 55671 -0.0378 0.3132 -0.23555 2011 4 21 55672 -0.0377 0.3150 -0.23633 2011 4 22 55673 -0.0376 0.3168 -0.23701 2011 4 23 55674 -0.0375 0.3187 -0.23769 2011 4 24 55675 -0.0373 0.3205 -0.23844 2011 4 25 55676 -0.0371 0.3223 -0.23927 2011 4 26 55677 -0.0369 0.3241 -0.24020 2011 4 27 55678 -0.0366 0.3259 -0.24120 2011 4 28 55679 -0.0363 0.3277 -0.24223 2011 4 29 55680 -0.0360 0.3295 -0.24327 2011 4 30 55681 -0.0357 0.3313 -0.24427 2011 5 1 55682 -0.0353 0.3330 -0.24521 2011 5 2 55683 -0.0349 0.3348 -0.24604 2011 5 3 55684 -0.0345 0.3366 -0.24675 2011 5 4 55685 -0.0340 0.3383 -0.24733 2011 5 5 55686 -0.0335 0.3401 -0.24781 2011 5 6 55687 -0.0330 0.3418 -0.24822 2011 5 7 55688 -0.0325 0.3436 -0.24862 2011 5 8 55689 -0.0319 0.3453 -0.24907 2011 5 9 55690 -0.0313 0.3470 -0.24964 2011 5 10 55691 -0.0307 0.3487 -0.25039 2011 5 11 55692 -0.0300 0.3504 -0.25134 2011 5 12 55693 -0.0293 0.3521 -0.25247 2011 5 13 55694 -0.0286 0.3538 -0.25373 2011 5 14 55695 -0.0279 0.3555 -0.25499 2011 5 15 55696 -0.0271 0.3571 -0.25614 2011 5 16 55697 -0.0263 0.3588 -0.25708 2011 5 17 55698 -0.0255 0.3604 -0.25777 2011 5 18 55699 -0.0247 0.3620 -0.25823 2011 5 19 55700 -0.0238 0.3636 -0.25855 2011 5 20 55701 -0.0230 0.3652 -0.25882 2011 5 21 55702 -0.0221 0.3668 -0.25912 2011 5 22 55703 -0.0211 0.3683 -0.25949 2011 5 23 55704 -0.0202 0.3699 -0.25994 2011 5 24 55705 -0.0192 0.3714 -0.26046 2011 5 25 55706 -0.0182 0.3729 -0.26102 2011 5 26 55707 -0.0172 0.3744 -0.26158 2011 5 27 55708 -0.0162 0.3759 -0.26211 2011 5 28 55709 -0.0151 0.3774 -0.26257 2011 5 29 55710 -0.0140 0.3788 -0.26291 2011 5 30 55711 -0.0129 0.3803 -0.26312 2011 5 31 55712 -0.0118 0.3817 -0.26320 2011 6 1 55713 -0.0106 0.3831 -0.26315 2011 6 2 55714 -0.0095 0.3845 -0.26302 2011 6 3 55715 -0.0083 0.3859 -0.26287 2011 6 4 55716 -0.0071 0.3872 -0.26275 2011 6 5 55717 -0.0059 0.3885 -0.26275 2011 6 6 55718 -0.0046 0.3898 -0.26290 2011 6 7 55719 -0.0034 0.3911 -0.26324 2011 6 8 55720 -0.0021 0.3924 -0.26374 2011 6 9 55721 -0.0008 0.3936 -0.26436 2011 6 10 55722 0.0005 0.3949 -0.26499 2011 6 11 55723 0.0018 0.3961 -0.26554 2011 6 12 55724 0.0031 0.3973 -0.26593 2011 6 13 55725 0.0045 0.3984 -0.26611 2011 6 14 55726 0.0059 0.3996 -0.26607 2011 6 15 55727 0.0072 0.4007 -0.26587 2011 6 16 55728 0.0086 0.4018 -0.26559 2011 6 17 55729 0.0100 0.4029 -0.26533 2011 6 18 55730 0.0115 0.4040 -0.26514 2011 6 19 55731 0.0129 0.4050 -0.26505 2011 6 20 55732 0.0144 0.4060 -0.26506 2011 6 21 55733 0.0158 0.4070 -0.26513 2011 6 22 55734 0.0173 0.4080 -0.26522 2011 6 23 55735 0.0188 0.4090 -0.26530 2011 6 24 55736 0.0203 0.4099 -0.26532 2011 6 25 55737 0.0218 0.4108 -0.26525 2011 6 26 55738 0.0233 0.4117 -0.26507 2011 6 27 55739 0.0248 0.4126 -0.26475 2011 6 28 55740 0.0263 0.4134 -0.26432 2011 6 29 55741 0.0278 0.4142 -0.26381 2011 6 30 55742 0.0294 0.4150 -0.26326 2011 7 1 55743 0.0309 0.4158 -0.26275 2011 7 2 55744 0.0325 0.4165 -0.26235 2011 7 3 55745 0.0341 0.4172 -0.26213 2011 7 4 55746 0.0356 0.4179 -0.26211 2011 7 5 55747 0.0372 0.4186 -0.26228 2011 7 6 55748 0.0388 0.4193 -0.26259 2011 7 7 55749 0.0404 0.4199 -0.26293 2011 7 8 55750 0.0420 0.4205 -0.26321 2011 7 9 55751 0.0436 0.4211 -0.26334 2011 7 10 55752 0.0452 0.4216 -0.26327 2011 7 11 55753 0.0468 0.4221 -0.26300 2011 7 12 55754 0.0484 0.4226 -0.26257 2011 7 13 55755 0.0500 0.4231 -0.26205 2011 7 14 55756 0.0516 0.4236 -0.26152 2011 7 15 55757 0.0532 0.4240 -0.26106 2011 7 16 55758 0.0548 0.4244 -0.26070 2011 7 17 55759 0.0564 0.4248 -0.26046 2011 7 18 55760 0.0581 0.4252 -0.26030 2011 7 19 55761 0.0597 0.4255 -0.26019 2011 7 20 55762 0.0613 0.4258 -0.26009 2011 7 21 55763 0.0629 0.4261 -0.25996 2011 7 22 55764 0.0645 0.4263 -0.25974 2011 7 23 55765 0.0661 0.4266 -0.25943 2011 7 24 55766 0.0677 0.4268 -0.25900 2011 7 25 55767 0.0693 0.4270 -0.25846 2011 7 26 55768 0.0709 0.4272 -0.25783 2011 7 27 55769 0.0725 0.4273 -0.25717 2011 7 28 55770 0.0741 0.4274 -0.25654 2011 7 29 55771 0.0757 0.4275 -0.25600 2011 7 30 55772 0.0773 0.4276 -0.25565 2011 7 31 55773 0.0788 0.4276 -0.25551 2011 8 1 55774 0.0804 0.4276 -0.25561 2011 8 2 55775 0.0820 0.4276 -0.25590 2011 8 3 55776 0.0835 0.4276 -0.25627 2011 8 4 55777 0.0851 0.4276 -0.25660 2011 8 5 55778 0.0866 0.4275 -0.25680 2011 8 6 55779 0.0882 0.4274 -0.25679 2011 8 7 55780 0.0897 0.4273 -0.25658 2011 8 8 55781 0.0912 0.4272 -0.25621 2011 8 9 55782 0.0927 0.4270 -0.25575 2011 8 10 55783 0.0942 0.4268 -0.25528 2011 8 11 55784 0.0957 0.4266 -0.25488 2011 8 12 55785 0.0972 0.4264 -0.25459 2011 8 13 55786 0.0987 0.4262 -0.25444 2011 8 14 55787 0.1001 0.4259 -0.25440 2011 8 15 55788 0.1016 0.4256 -0.25446 2011 8 16 55789 0.1030 0.4253 -0.25457 2011 8 17 55790 0.1044 0.4250 -0.25466 2011 8 18 55791 0.1059 0.4246 -0.25471 2011 8 19 55792 0.1073 0.4242 -0.25468 2011 8 20 55793 0.1086 0.4238 -0.25455 2011 8 21 55794 0.1100 0.4234 -0.25432 2011 8 22 55795 0.1114 0.4230 -0.25401 2011 8 23 55796 0.1127 0.4225 -0.25367 2011 8 24 55797 0.1141 0.4221 -0.25333 2011 8 25 55798 0.1154 0.4216 -0.25309 2011 8 26 55799 0.1167 0.4210 -0.25300 2011 8 27 55800 0.1180 0.4205 -0.25314 2011 8 28 55801 0.1193 0.4200 -0.25355 2011 8 29 55802 0.1206 0.4194 -0.25419 2011 8 30 55803 0.1218 0.4188 -0.25500 2011 8 31 55804 0.1230 0.4182 -0.25585 2011 9 1 55805 0.1243 0.4176 -0.25661 2011 9 2 55806 0.1255 0.4169 -0.25717 2011 9 3 55807 0.1266 0.4163 -0.25751 2011 9 4 55808 0.1278 0.4156 -0.25766 2011 9 5 55809 0.1290 0.4149 -0.25769 2011 9 6 55810 0.1301 0.4142 -0.25768 2011 9 7 55811 0.1312 0.4135 -0.25773 2011 9 8 55812 0.1323 0.4127 -0.25788 2011 9 9 55813 0.1334 0.4120 -0.25815 2011 9 10 55814 0.1345 0.4112 -0.25856 2011 9 11 55815 0.1355 0.4104 -0.25906 2011 9 12 55816 0.1366 0.4096 -0.25963 2011 9 13 55817 0.1376 0.4088 -0.26022 2011 9 14 55818 0.1386 0.4080 -0.26077 2011 9 15 55819 0.1395 0.4072 -0.26126 2011 9 16 55820 0.1405 0.4063 -0.26165 2011 9 17 55821 0.1414 0.4054 -0.26195 2011 9 18 55822 0.1423 0.4045 -0.26216 2011 9 19 55823 0.1432 0.4036 -0.26233 2011 9 20 55824 0.1441 0.4027 -0.26248 2011 9 21 55825 0.1450 0.4018 -0.26269 2011 9 22 55826 0.1458 0.4009 -0.26302 2011 9 23 55827 0.1466 0.3999 -0.26354 2011 9 24 55828 0.1474 0.3990 -0.26431 2011 9 25 55829 0.1482 0.3980 -0.26532 2011 9 26 55830 0.1490 0.3971 -0.26656 2011 9 27 55831 0.1497 0.3961 -0.26790 2011 9 28 55832 0.1505 0.3951 -0.26923 2011 9 29 55833 0.1512 0.3941 -0.27041 2011 9 30 55834 0.1518 0.3931 -0.27138 2011 10 1 55835 0.1525 0.3920 -0.27211 2011 10 2 55836 0.1531 0.3910 -0.27269 2011 10 3 55837 0.1538 0.3900 -0.27319 2011 10 4 55838 0.1544 0.3889 -0.27371 2011 10 5 55839 0.1549 0.3879 -0.27432 2011 10 6 55840 0.1555 0.3868 -0.27506 2011 10 7 55841 0.1560 0.3857 -0.27592 2011 10 8 55842 0.1565 0.3846 -0.27691 2011 10 9 55843 0.1570 0.3836 -0.27798 2011 10 10 55844 0.1575 0.3825 -0.27909 2011 10 11 55845 0.1580 0.3814 -0.28020 2011 10 12 55846 0.1584 0.3803 -0.28126 2011 10 13 55847 0.1588 0.3792 -0.28223 2011 10 14 55848 0.1592 0.3781 -0.28310 2011 10 15 55849 0.1596 0.3769 -0.28387 2011 10 16 55850 0.1599 0.3758 -0.28456 2011 10 17 55851 0.1603 0.3747 -0.28519 2011 10 18 55852 0.1606 0.3736 -0.28581 2011 10 19 55853 0.1609 0.3724 -0.28647 2011 10 20 55854 0.1611 0.3713 -0.28721 2011 10 21 55855 0.1614 0.3702 -0.28809 2011 10 22 55856 0.1616 0.3690 -0.28914 2011 10 23 55857 0.1618 0.3679 -0.29036 2011 10 24 55858 0.1620 0.3667 -0.29171 2011 10 25 55859 0.1622 0.3656 -0.29309 2011 10 26 55860 0.1623 0.3645 -0.29438 2011 10 27 55861 0.1625 0.3633 -0.29550 2011 10 28 55862 0.1626 0.3622 -0.29641 2011 10 29 55863 0.1627 0.3610 -0.29713 2011 10 30 55864 0.1627 0.3599 -0.29774 2011 10 31 55865 0.1628 0.3587 -0.29834 2011 11 1 55866 0.1628 0.3576 -0.29903 2011 11 2 55867 0.1628 0.3564 -0.29983 2011 11 3 55868 0.1628 0.3553 -0.30075 2011 11 4 55869 0.1628 0.3542 -0.30178 2011 11 5 55870 0.1628 0.3530 -0.30288 2011 11 6 55871 0.1627 0.3519 -0.30400 2011 11 7 55872 0.1626 0.3507 -0.30508 2011 11 8 55873 0.1625 0.3496 -0.30606 2011 11 9 55874 0.1624 0.3485 -0.30694 2011 11 10 55875 0.1623 0.3474 -0.30772 2011 11 11 55876 0.1621 0.3462 -0.30844 2011 11 12 55877 0.1620 0.3451 -0.30913 2011 11 13 55878 0.1618 0.3440 -0.30977 2011 11 14 55879 0.1616 0.3429 -0.31043 2011 11 15 55880 0.1613 0.3418 -0.31116 2011 11 16 55881 0.1611 0.3407 -0.31198 2011 11 17 55882 0.1609 0.3396 -0.31293 2011 11 18 55883 0.1606 0.3385 -0.31406 2011 11 19 55884 0.1603 0.3374 -0.31545 2011 11 20 55885 0.1600 0.3363 -0.31695 2011 11 21 55886 0.1597 0.3353 -0.31849 2011 11 22 55887 0.1593 0.3342 -0.32004 2011 11 23 55888 0.1590 0.3331 -0.32145 2011 11 24 55889 0.1586 0.3321 -0.32262 2011 11 25 55890 0.1583 0.3310 -0.32360 2011 11 26 55891 0.1579 0.3300 -0.32445 2011 11 27 55892 0.1575 0.3290 -0.32523 2011 11 28 55893 0.1570 0.3279 -0.32607 2011 11 29 55894 0.1566 0.3269 -0.32706 2011 11 30 55895 0.1561 0.3259 -0.32814 2011 12 1 55896 0.1557 0.3249 -0.32929 2011 12 2 55897 0.1552 0.3239 -0.33047 2011 12 3 55898 0.1547 0.3229 -0.33163 2011 12 4 55899 0.1542 0.3220 -0.33278 2011 12 5 55900 0.1537 0.3210 -0.33386 2011 12 6 55901 0.1532 0.3200 -0.33482 2011 12 7 55902 0.1526 0.3191 -0.33565 2011 12 8 55903 0.1521 0.3181 -0.33634 2011 12 9 55904 0.1515 0.3172 -0.33692 2011 12 10 55905 0.1509 0.3163 -0.33743 2011 12 11 55906 0.1503 0.3154 -0.33788 2011 12 12 55907 0.1498 0.3145 -0.33831 2011 12 13 55908 0.1491 0.3136 -0.33877 2011 12 14 55909 0.1485 0.3127 -0.33936 2011 12 15 55910 0.1479 0.3119 -0.34013 2011 12 16 55911 0.1473 0.3110 -0.34110 2011 12 17 55912 0.1466 0.3101 -0.34221 2011 12 18 55913 0.1460 0.3093 -0.34344 2011 12 19 55914 0.1453 0.3085 -0.34464 2011 12 20 55915 0.1446 0.3077 -0.34571 2011 12 21 55916 0.1439 0.3069 -0.34658 2011 12 22 55917 0.1433 0.3061 -0.34725 2011 12 23 55918 0.1426 0.3053 -0.34782 2011 12 24 55919 0.1419 0.3045 -0.34829 2011 12 25 55920 0.1412 0.3038 -0.34884 2011 12 26 55921 0.1404 0.3030 -0.34955 2011 12 27 55922 0.1397 0.3023 -0.35038 2011 12 28 55923 0.1390 0.3016 -0.35133 2011 12 29 55924 0.1382 0.3009 -0.35226 2011 12 30 55925 0.1375 0.3002 -0.35315 2011 12 31 55926 0.1368 0.2995 -0.35393 2012 1 1 55927 0.1360 0.2988 -0.35462 2012 1 2 55928 0.1352 0.2982 -0.35525 2012 1 3 55929 0.1345 0.2975 -0.35577 2012 1 4 55930 0.1337 0.2969 -0.35621 2012 1 5 55931 0.1329 0.2963 -0.35655 2012 1 6 55932 0.1322 0.2956 -0.35681 2012 1 7 55933 0.1314 0.2950 -0.35702 2012 1 8 55934 0.1306 0.2945 -0.35724 2012 1 9 55935 0.1298 0.2939 -0.35759 2012 1 10 55936 0.1290 0.2933 -0.35811 2012 1 11 55937 0.1282 0.2928 -0.35884 2012 1 12 55938 0.1275 0.2922 -0.35978 2012 1 13 55939 0.1267 0.2917 -0.36086 2012 1 14 55940 0.1259 0.2912 -0.36200 2012 1 15 55941 0.1251 0.2907 -0.36317 2012 1 16 55942 0.1243 0.2902 -0.36424 2012 1 17 55943 0.1235 0.2898 -0.36513 2012 1 18 55944 0.1227 0.2893 -0.36581 2012 1 19 55945 0.1219 0.2889 -0.36634 2012 1 20 55946 0.1211 0.2884 -0.36676 2012 1 21 55947 0.1203 0.2880 -0.36716 2012 1 22 55948 0.1195 0.2876 -0.36761 2012 1 23 55949 0.1187 0.2872 -0.36816 2012 1 24 55950 0.1179 0.2868 -0.36887 2012 1 25 55951 0.1171 0.2865 -0.36966 2012 1 26 55952 0.1163 0.2861 -0.37058 2012 1 27 55953 0.1155 0.2857 -0.37160 2012 1 28 55954 0.1147 0.2854 -0.37257 2012 1 29 55955 0.1139 0.2851 -0.37345 2012 1 30 55956 0.1131 0.2848 -0.37427 2012 1 31 55957 0.1123 0.2845 -0.37506 2012 2 1 55958 0.1116 0.2842 -0.37580 2012 2 2 55959 0.1108 0.2839 -0.37650 2012 2 3 55960 0.1100 0.2837 -0.37717 2012 2 4 55961 0.1092 0.2834 -0.37786 2012 2 5 55962 0.1085 0.2832 -0.37860 2012 2 6 55963 0.1077 0.2830 -0.37947 2012 2 7 55964 0.1070 0.2828 -0.38048 2012 2 8 55965 0.1062 0.2825 -0.38174 2012 2 9 55966 0.1054 0.2824 -0.38323 2012 2 10 55967 0.1047 0.2822 -0.38489 2012 2 11 55968 0.1040 0.2820 -0.38664 2012 2 12 55969 0.1032 0.2819 -0.38835 2012 2 13 55970 0.1025 0.2817 -0.38992 2012 2 14 55971 0.1018 0.2816 -0.39130 2012 2 15 55972 0.1010 0.2815 -0.39251 2012 2 16 55973 0.1003 0.2813 -0.39368 2012 2 17 55974 0.0996 0.2812 -0.39491 2012 2 18 55975 0.0989 0.2812 -0.39622 2012 2 19 55976 0.0982 0.2811 -0.39756 2012 2 20 55977 0.0975 0.2810 -0.39899 2012 2 21 55978 0.0968 0.2809 -0.40058 2012 2 22 55979 0.0962 0.2809 -0.40230 2012 2 23 55980 0.0955 0.2809 -0.40411 2012 2 24 55981 0.0948 0.2808 -0.40587 2012 2 25 55982 0.0942 0.2808 -0.40752 2012 2 26 55983 0.0935 0.2808 -0.40905 2012 2 27 55984 0.0929 0.2808 -0.41044 2012 2 28 55985 0.0923 0.2808 -0.41166 2012 2 29 55986 0.0916 0.2808 -0.41277 2012 3 1 55987 0.0910 0.2808 -0.41378 2012 3 2 55988 0.0904 0.2809 -0.41475 2012 3 3 55989 0.0898 0.2809 -0.41582 2012 3 4 55990 0.0892 0.2810 -0.41701 2012 3 5 55991 0.0886 0.2810 -0.41836 2012 3 6 55992 0.0881 0.2811 -0.41985 2012 3 7 55993 0.0875 0.2812 -0.42145 2012 3 8 55994 0.0869 0.2813 -0.42313 2012 3 9 55995 0.0864 0.2814 -0.42478 2012 3 10 55996 0.0859 0.2815 -0.42637 2012 3 11 55997 0.0853 0.2816 -0.42784 2012 3 12 55998 0.0848 0.2817 -0.42916 2012 3 13 55999 0.0843 0.2818 -0.43035 2012 3 14 56000 0.0838 0.2819 -0.43149 2012 3 15 56001 0.0833 0.2821 -0.43263 2012 3 16 56002 0.0828 0.2822 -0.43385 2012 3 17 56003 0.0823 0.2824 -0.43521 2012 3 18 56004 0.0818 0.2825 -0.43671 2012 3 19 56005 0.0814 0.2827 -0.43835 2012 3 20 56006 0.0809 0.2829 -0.44004 2012 3 21 56007 0.0805 0.2830 -0.44170 2012 3 22 56008 0.0801 0.2832 -0.44337 2012 3 23 56009 0.0796 0.2834 -0.44499 2012 3 24 56010 0.0792 0.2836 -0.44657 2012 3 25 56011 0.0788 0.2838 -0.44804 2012 3 26 56012 0.0784 0.2840 -0.44938 2012 3 27 56013 0.0780 0.2842 -0.45064 2012 3 28 56014 0.0777 0.2844 -0.45184 2012 3 29 56015 0.0773 0.2846 -0.45302 2012 3 30 56016 0.0770 0.2849 -0.45421 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) 55632 -66.59 0.22 -9.87 0.34 55633 -66.91 0.22 -9.88 0.34 55634 -67.09 0.47 -9.77 0.11 55635 -67.08 0.73 -9.77 0.16 55636 -66.90 0.44 -9.95 0.11 55637 -66.57 0.44 -10.09 0.11 55638 -66.23 0.44 -9.91 0.11 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55632 -0.001 0.088 -0.457 0.340 55633 0.003 0.088 -0.437 0.340 55634 0.010 0.187 -0.422 0.110 55635 0.020 0.290 -0.413 0.160 55636 0.015 0.175 -0.377 0.110 55637 -0.017 0.175 -0.337 0.110 55638 -0.062 0.175 -0.327 0.110 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.