********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 24 March 2011 Vol. XXIV No. 012 ______________________________________________________________________ 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 18 55638 -.01950 .00011 0.25444 .00009 -0.194650 0.000009 11 3 19 55639 -.02061 .00011 0.25599 .00009 -0.196218 0.000013 11 3 20 55640 -.02161 .00010 0.25776 .00009 -0.197828 0.000015 11 3 21 55641 -.02278 .00010 0.25977 .00009 -0.199358 0.000015 11 3 22 55642 -.02429 .00010 0.26173 .00009 -0.200709 0.000015 11 3 23 55643 -.02569 .00010 0.26348 .00009 -0.201839 0.000015 11 3 24 55644 -.02681 .00009 0.26532 .00009 -0.202767 0.000014 _______________________________________________________________________ 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 = 0.0954 - 0.1087 cos A - 0.0315 sin A - 0.0173 cos C - 0.0387 sin C y = 0.3328 - 0.0257 cos A + 0.0988 sin A - 0.0387 cos C + 0.0173 sin C UT1-UTC = -0.1849 - 0.00064 (MJD - 55652) - (UT2-UT1) where A = 2*pi*(MJD-55644)/365.25 and C = 2*pi*(MJD-55644)/435. TAI-UTC(MJD 55645) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55644)**0.80 S t = 0.00025 (MJD-55644)**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 25 55645 -0.0279 0.2670 -0.20356 2011 3 26 55646 -0.0288 0.2688 -0.20433 2011 3 27 55647 -0.0296 0.2706 -0.20515 2011 3 28 55648 -0.0303 0.2725 -0.20607 2011 3 29 55649 -0.0310 0.2743 -0.20711 2011 3 30 55650 -0.0317 0.2761 -0.20826 2011 3 31 55651 -0.0324 0.2779 -0.20949 2011 4 1 55652 -0.0330 0.2797 -0.21077 2011 4 2 55653 -0.0335 0.2814 -0.21207 2011 4 3 55654 -0.0340 0.2832 -0.21335 2011 4 4 55655 -0.0345 0.2850 -0.21455 2011 4 5 55656 -0.0349 0.2868 -0.21562 2011 4 6 55657 -0.0353 0.2886 -0.21655 2011 4 7 55658 -0.0357 0.2904 -0.21733 2011 4 8 55659 -0.0360 0.2923 -0.21797 2011 4 9 55660 -0.0363 0.2941 -0.21856 2011 4 10 55661 -0.0366 0.2959 -0.21916 2011 4 11 55662 -0.0368 0.2977 -0.21986 2011 4 12 55663 -0.0370 0.2995 -0.22075 2011 4 13 55664 -0.0371 0.3013 -0.22189 2011 4 14 55665 -0.0372 0.3032 -0.22329 2011 4 15 55666 -0.0373 0.3050 -0.22491 2011 4 16 55667 -0.0374 0.3068 -0.22663 2011 4 17 55668 -0.0374 0.3087 -0.22830 2011 4 18 55669 -0.0374 0.3105 -0.22980 2011 4 19 55670 -0.0374 0.3123 -0.23105 2011 4 20 55671 -0.0373 0.3141 -0.23204 2011 4 21 55672 -0.0372 0.3159 -0.23285 2011 4 22 55673 -0.0371 0.3178 -0.23356 2011 4 23 55674 -0.0369 0.3196 -0.23425 2011 4 24 55675 -0.0367 0.3214 -0.23500 2011 4 25 55676 -0.0365 0.3232 -0.23583 2011 4 26 55677 -0.0362 0.3250 -0.23675 2011 4 27 55678 -0.0360 0.3268 -0.23773 2011 4 28 55679 -0.0357 0.3286 -0.23875 2011 4 29 55680 -0.0353 0.3304 -0.23978 2011 4 30 55681 -0.0349 0.3322 -0.24078 2011 5 1 55682 -0.0345 0.3340 -0.24170 2011 5 2 55683 -0.0341 0.3358 -0.24252 2011 5 3 55684 -0.0337 0.3375 -0.24322 2011 5 4 55685 -0.0332 0.3393 -0.24379 2011 5 5 55686 -0.0327 0.3410 -0.24426 2011 5 6 55687 -0.0321 0.3428 -0.24465 2011 5 7 55688 -0.0316 0.3445 -0.24503 2011 5 8 55689 -0.0310 0.3462 -0.24547 2011 5 9 55690 -0.0303 0.3480 -0.24604 2011 5 10 55691 -0.0297 0.3497 -0.24679 2011 5 11 55692 -0.0290 0.3514 -0.24774 2011 5 12 55693 -0.0283 0.3530 -0.24887 2011 5 13 55694 -0.0276 0.3547 -0.25010 2011 5 14 55695 -0.0268 0.3564 -0.25134 2011 5 15 55696 -0.0261 0.3580 -0.25247 2011 5 16 55697 -0.0252 0.3597 -0.25339 2011 5 17 55698 -0.0244 0.3613 -0.25407 2011 5 18 55699 -0.0236 0.3629 -0.25452 2011 5 19 55700 -0.0227 0.3645 -0.25483 2011 5 20 55701 -0.0218 0.3661 -0.25507 2011 5 21 55702 -0.0209 0.3677 -0.25535 2011 5 22 55703 -0.0199 0.3692 -0.25569 2011 5 23 55704 -0.0189 0.3707 -0.25611 2011 5 24 55705 -0.0179 0.3723 -0.25661 2011 5 25 55706 -0.0169 0.3738 -0.25714 2011 5 26 55707 -0.0159 0.3753 -0.25768 2011 5 27 55708 -0.0148 0.3768 -0.25819 2011 5 28 55709 -0.0137 0.3782 -0.25862 2011 5 29 55710 -0.0126 0.3797 -0.25895 2011 5 30 55711 -0.0115 0.3811 -0.25915 2011 5 31 55712 -0.0104 0.3825 -0.25921 2011 6 1 55713 -0.0092 0.3839 -0.25917 2011 6 2 55714 -0.0080 0.3853 -0.25904 2011 6 3 55715 -0.0068 0.3866 -0.25890 2011 6 4 55716 -0.0056 0.3880 -0.25880 2011 6 5 55717 -0.0044 0.3893 -0.25882 2011 6 6 55718 -0.0031 0.3906 -0.25899 2011 6 7 55719 -0.0018 0.3918 -0.25936 2011 6 8 55720 -0.0005 0.3931 -0.25989 2011 6 9 55721 0.0008 0.3943 -0.26053 2011 6 10 55722 0.0021 0.3956 -0.26120 2011 6 11 55723 0.0034 0.3968 -0.26178 2011 6 12 55724 0.0048 0.3979 -0.26219 2011 6 13 55725 0.0062 0.3991 -0.26239 2011 6 14 55726 0.0075 0.4002 -0.26238 2011 6 15 55727 0.0089 0.4014 -0.26222 2011 6 16 55728 0.0104 0.4024 -0.26198 2011 6 17 55729 0.0118 0.4035 -0.26176 2011 6 18 55730 0.0132 0.4046 -0.26160 2011 6 19 55731 0.0147 0.4056 -0.26154 2011 6 20 55732 0.0161 0.4066 -0.26157 2011 6 21 55733 0.0176 0.4076 -0.26167 2011 6 22 55734 0.0191 0.4086 -0.26180 2011 6 23 55735 0.0206 0.4095 -0.26191 2011 6 24 55736 0.0221 0.4104 -0.26196 2011 6 25 55737 0.0236 0.4113 -0.26192 2011 6 26 55738 0.0251 0.4122 -0.26177 2011 6 27 55739 0.0267 0.4130 -0.26149 2011 6 28 55740 0.0282 0.4138 -0.26110 2011 6 29 55741 0.0298 0.4146 -0.26063 2011 6 30 55742 0.0313 0.4154 -0.26013 2011 7 1 55743 0.0329 0.4162 -0.25966 2011 7 2 55744 0.0345 0.4169 -0.25930 2011 7 3 55745 0.0361 0.4176 -0.25910 2011 7 4 55746 0.0376 0.4183 -0.25911 2011 7 5 55747 0.0392 0.4189 -0.25929 2011 7 6 55748 0.0408 0.4196 -0.25959 2011 7 7 55749 0.0424 0.4202 -0.25992 2011 7 8 55750 0.0440 0.4208 -0.26018 2011 7 9 55751 0.0456 0.4213 -0.26027 2011 7 10 55752 0.0472 0.4218 -0.26017 2011 7 11 55753 0.0489 0.4224 -0.25984 2011 7 12 55754 0.0505 0.4228 -0.25936 2011 7 13 55755 0.0521 0.4233 -0.25879 2011 7 14 55756 0.0537 0.4237 -0.25822 2011 7 15 55757 0.0553 0.4241 -0.25772 2011 7 16 55758 0.0570 0.4245 -0.25732 2011 7 17 55759 0.0586 0.4249 -0.25705 2011 7 18 55760 0.0602 0.4252 -0.25687 2011 7 19 55761 0.0618 0.4255 -0.25675 2011 7 20 55762 0.0634 0.4258 -0.25664 2011 7 21 55763 0.0651 0.4261 -0.25650 2011 7 22 55764 0.0667 0.4263 -0.25628 2011 7 23 55765 0.0683 0.4266 -0.25596 2011 7 24 55766 0.0699 0.4268 -0.25553 2011 7 25 55767 0.0715 0.4269 -0.25499 2011 7 26 55768 0.0731 0.4271 -0.25437 2011 7 27 55769 0.0747 0.4272 -0.25372 2011 7 28 55770 0.0763 0.4273 -0.25309 2011 7 29 55771 0.0779 0.4274 -0.25257 2011 7 30 55772 0.0795 0.4274 -0.25222 2011 7 31 55773 0.0810 0.4274 -0.25211 2011 8 1 55774 0.0826 0.4274 -0.25223 2011 8 2 55775 0.0842 0.4274 -0.25253 2011 8 3 55776 0.0857 0.4274 -0.25291 2011 8 4 55777 0.0873 0.4273 -0.25326 2011 8 5 55778 0.0888 0.4272 -0.25347 2011 8 6 55779 0.0904 0.4271 -0.25348 2011 8 7 55780 0.0919 0.4270 -0.25328 2011 8 8 55781 0.0934 0.4268 -0.25292 2011 8 9 55782 0.0949 0.4266 -0.25247 2011 8 10 55783 0.0964 0.4264 -0.25202 2011 8 11 55784 0.0979 0.4262 -0.25162 2011 8 12 55785 0.0994 0.4259 -0.25134 2011 8 13 55786 0.1009 0.4257 -0.25120 2011 8 14 55787 0.1023 0.4254 -0.25118 2011 8 15 55788 0.1038 0.4251 -0.25125 2011 8 16 55789 0.1052 0.4247 -0.25137 2011 8 17 55790 0.1067 0.4244 -0.25148 2011 8 18 55791 0.1081 0.4240 -0.25154 2011 8 19 55792 0.1095 0.4236 -0.25152 2011 8 20 55793 0.1109 0.4232 -0.25141 2011 8 21 55794 0.1122 0.4228 -0.25119 2011 8 22 55795 0.1136 0.4223 -0.25090 2011 8 23 55796 0.1150 0.4218 -0.25056 2011 8 24 55797 0.1163 0.4213 -0.25024 2011 8 25 55798 0.1176 0.4208 -0.25000 2011 8 26 55799 0.1189 0.4203 -0.24992 2011 8 27 55800 0.1202 0.4197 -0.25007 2011 8 28 55801 0.1215 0.4191 -0.25048 2011 8 29 55802 0.1227 0.4185 -0.25113 2011 8 30 55803 0.1240 0.4179 -0.25194 2011 8 31 55804 0.1252 0.4173 -0.25279 2011 9 1 55805 0.1264 0.4167 -0.25354 2011 9 2 55806 0.1276 0.4160 -0.25411 2011 9 3 55807 0.1288 0.4153 -0.25446 2011 9 4 55808 0.1300 0.4146 -0.25461 2011 9 5 55809 0.1311 0.4139 -0.25464 2011 9 6 55810 0.1323 0.4132 -0.25465 2011 9 7 55811 0.1334 0.4124 -0.25470 2011 9 8 55812 0.1345 0.4117 -0.25486 2011 9 9 55813 0.1355 0.4109 -0.25514 2011 9 10 55814 0.1366 0.4101 -0.25555 2011 9 11 55815 0.1376 0.4093 -0.25606 2011 9 12 55816 0.1387 0.4085 -0.25663 2011 9 13 55817 0.1397 0.4076 -0.25722 2011 9 14 55818 0.1406 0.4068 -0.25777 2011 9 15 55819 0.1416 0.4059 -0.25826 2011 9 16 55820 0.1426 0.4050 -0.25865 2011 9 17 55821 0.1435 0.4041 -0.25894 2011 9 18 55822 0.1444 0.4032 -0.25916 2011 9 19 55823 0.1453 0.4023 -0.25932 2011 9 20 55824 0.1462 0.4014 -0.25947 2011 9 21 55825 0.1470 0.4004 -0.25968 2011 9 22 55826 0.1478 0.3995 -0.26001 2011 9 23 55827 0.1486 0.3985 -0.26053 2011 9 24 55828 0.1494 0.3975 -0.26129 2011 9 25 55829 0.1502 0.3965 -0.26231 2011 9 26 55830 0.1510 0.3955 -0.26356 2011 9 27 55831 0.1517 0.3945 -0.26492 2011 9 28 55832 0.1524 0.3935 -0.26628 2011 9 29 55833 0.1531 0.3925 -0.26751 2011 9 30 55834 0.1538 0.3915 -0.26853 2011 10 1 55835 0.1544 0.3904 -0.26935 2011 10 2 55836 0.1550 0.3894 -0.27001 2011 10 3 55837 0.1556 0.3883 -0.27062 2011 10 4 55838 0.1562 0.3872 -0.27125 2011 10 5 55839 0.1568 0.3861 -0.27195 2011 10 6 55840 0.1573 0.3851 -0.27276 2011 10 7 55841 0.1579 0.3840 -0.27366 2011 10 8 55842 0.1584 0.3829 -0.27463 2011 10 9 55843 0.1588 0.3818 -0.27563 2011 10 10 55844 0.1593 0.3806 -0.27660 2011 10 11 55845 0.1597 0.3795 -0.27750 2011 10 12 55846 0.1602 0.3784 -0.27827 2011 10 13 55847 0.1606 0.3773 -0.27891 2011 10 14 55848 0.1609 0.3762 -0.27942 2011 10 15 55849 0.1613 0.3750 -0.27982 2011 10 16 55850 0.1616 0.3739 -0.28015 2011 10 17 55851 0.1619 0.3727 -0.28046 2011 10 18 55852 0.1622 0.3716 -0.28082 2011 10 19 55853 0.1625 0.3704 -0.28129 2011 10 20 55854 0.1628 0.3693 -0.28193 2011 10 21 55855 0.1630 0.3681 -0.28280 2011 10 22 55856 0.1632 0.3670 -0.28392 2011 10 23 55857 0.1634 0.3658 -0.28528 2011 10 24 55858 0.1636 0.3646 -0.28680 2011 10 25 55859 0.1637 0.3635 -0.28838 2011 10 26 55860 0.1639 0.3623 -0.28989 2011 10 27 55861 0.1640 0.3612 -0.29122 2011 10 28 55862 0.1641 0.3600 -0.29237 2011 10 29 55863 0.1641 0.3588 -0.29336 2011 10 30 55864 0.1642 0.3577 -0.29425 2011 10 31 55865 0.1642 0.3565 -0.29513 2011 11 1 55866 0.1642 0.3553 -0.29607 2011 11 2 55867 0.1642 0.3542 -0.29709 2011 11 3 55868 0.1642 0.3530 -0.29819 2011 11 4 55869 0.1642 0.3519 -0.29936 2011 11 5 55870 0.1641 0.3507 -0.30063 2011 11 6 55871 0.1640 0.3496 -0.30188 2011 11 7 55872 0.1639 0.3484 -0.30306 2011 11 8 55873 0.1638 0.3473 -0.30420 2011 11 9 55874 0.1637 0.3461 -0.30522 2011 11 10 55875 0.1635 0.3450 -0.30608 2011 11 11 55876 0.1633 0.3438 -0.30684 2011 11 12 55877 0.1632 0.3427 -0.30754 2011 11 13 55878 0.1629 0.3416 -0.30818 2011 11 14 55879 0.1627 0.3405 -0.30886 2011 11 15 55880 0.1625 0.3393 -0.30965 2011 11 16 55881 0.1622 0.3382 -0.31055 2011 11 17 55882 0.1619 0.3371 -0.31160 2011 11 18 55883 0.1617 0.3360 -0.31282 2011 11 19 55884 0.1613 0.3349 -0.31420 2011 11 20 55885 0.1610 0.3338 -0.31576 2011 11 21 55886 0.1607 0.3327 -0.31741 2011 11 22 55887 0.1603 0.3317 -0.31900 2011 11 23 55888 0.1600 0.3306 -0.32047 2011 11 24 55889 0.1596 0.3295 -0.32174 2011 11 25 55890 0.1592 0.3285 -0.32278 2011 11 26 55891 0.1588 0.3274 -0.32367 2011 11 27 55892 0.1583 0.3264 -0.32445 2011 11 28 55893 0.1579 0.3253 -0.32519 2011 11 29 55894 0.1574 0.3243 -0.32595 2011 11 30 55895 0.1569 0.3233 -0.32679 2011 12 1 55896 0.1565 0.3223 -0.32773 2011 12 2 55897 0.1560 0.3213 -0.32874 2011 12 3 55898 0.1554 0.3203 -0.32976 2011 12 4 55899 0.1549 0.3193 -0.33077 2011 12 5 55900 0.1544 0.3183 -0.33171 2011 12 6 55901 0.1538 0.3174 -0.33249 2011 12 7 55902 0.1533 0.3164 -0.33311 2011 12 8 55903 0.1527 0.3155 -0.33360 2011 12 9 55904 0.1521 0.3145 -0.33403 2011 12 10 55905 0.1515 0.3136 -0.33439 2011 12 11 55906 0.1509 0.3127 -0.33481 2011 12 12 55907 0.1503 0.3118 -0.33535 2011 12 13 55908 0.1497 0.3109 -0.33599 2011 12 14 55909 0.1490 0.3100 -0.33680 2011 12 15 55910 0.1484 0.3091 -0.33767 2011 12 16 55911 0.1477 0.3083 -0.33865 2011 12 17 55912 0.1470 0.3074 -0.33969 2011 12 18 55913 0.1464 0.3066 -0.34079 2011 12 19 55914 0.1457 0.3057 -0.34190 2011 12 20 55915 0.1450 0.3049 -0.34293 2011 12 21 55916 0.1443 0.3041 -0.34383 2011 12 22 55917 0.1436 0.3033 -0.34458 2011 12 23 55918 0.1428 0.3025 -0.34515 2011 12 24 55919 0.1421 0.3018 -0.34562 2011 12 25 55920 0.1414 0.3010 -0.34607 2011 12 26 55921 0.1406 0.3003 -0.34663 2011 12 27 55922 0.1399 0.2995 -0.34732 2011 12 28 55923 0.1391 0.2988 -0.34815 2011 12 29 55924 0.1384 0.2981 -0.34907 2011 12 30 55925 0.1376 0.2974 -0.35001 2011 12 31 55926 0.1368 0.2967 -0.35089 2012 1 1 55927 0.1361 0.2961 -0.35174 2012 1 2 55928 0.1353 0.2954 -0.35247 2012 1 3 55929 0.1345 0.2948 -0.35305 2012 1 4 55930 0.1337 0.2941 -0.35348 2012 1 5 55931 0.1329 0.2935 -0.35380 2012 1 6 55932 0.1321 0.2929 -0.35403 2012 1 7 55933 0.1313 0.2923 -0.35422 2012 1 8 55934 0.1305 0.2917 -0.35444 2012 1 9 55935 0.1297 0.2912 -0.35474 2012 1 10 55936 0.1289 0.2906 -0.35520 2012 1 11 55937 0.1281 0.2901 -0.35582 2012 1 12 55938 0.1273 0.2895 -0.35669 2012 1 13 55939 0.1264 0.2890 -0.35780 2012 1 14 55940 0.1256 0.2885 -0.35899 2012 1 15 55941 0.1248 0.2880 -0.36018 2012 1 16 55942 0.1240 0.2875 -0.36133 2012 1 17 55943 0.1232 0.2871 -0.36241 2012 1 18 55944 0.1223 0.2866 -0.36339 2012 1 19 55945 0.1215 0.2862 -0.36424 2012 1 20 55946 0.1207 0.2858 -0.36501 2012 1 21 55947 0.1199 0.2853 -0.36578 2012 1 22 55948 0.1191 0.2850 -0.36657 2012 1 23 55949 0.1182 0.2846 -0.36746 2012 1 24 55950 0.1174 0.2842 -0.36844 2012 1 25 55951 0.1166 0.2838 -0.36956 2012 1 26 55952 0.1158 0.2835 -0.37078 2012 1 27 55953 0.1150 0.2831 -0.37205 2012 1 28 55954 0.1142 0.2828 -0.37333 2012 1 29 55955 0.1133 0.2825 -0.37455 2012 1 30 55956 0.1125 0.2822 -0.37568 2012 1 31 55957 0.1117 0.2819 -0.37669 2012 2 1 55958 0.1109 0.2817 -0.37758 2012 2 2 55959 0.1101 0.2814 -0.37845 2012 2 3 55960 0.1093 0.2812 -0.37940 2012 2 4 55961 0.1085 0.2809 -0.38040 2012 2 5 55962 0.1078 0.2807 -0.38141 2012 2 6 55963 0.1070 0.2805 -0.38252 2012 2 7 55964 0.1062 0.2803 -0.38386 2012 2 8 55965 0.1054 0.2801 -0.38545 2012 2 9 55966 0.1046 0.2799 -0.38727 2012 2 10 55967 0.1039 0.2798 -0.38919 2012 2 11 55968 0.1031 0.2796 -0.39111 2012 2 12 55969 0.1024 0.2795 -0.39293 2012 2 13 55970 0.1016 0.2793 -0.39458 2012 2 14 55971 0.1009 0.2792 -0.39598 2012 2 15 55972 0.1001 0.2791 -0.39719 2012 2 16 55973 0.0994 0.2790 -0.39824 2012 2 17 55974 0.0987 0.2789 -0.39923 2012 2 18 55975 0.0979 0.2789 -0.40030 2012 2 19 55976 0.0972 0.2788 -0.40148 2012 2 20 55977 0.0965 0.2787 -0.40277 2012 2 21 55978 0.0958 0.2787 -0.40413 2012 2 22 55979 0.0951 0.2787 -0.40546 2012 2 23 55980 0.0944 0.2787 -0.40672 2012 2 24 55981 0.0938 0.2786 -0.40785 2012 2 25 55982 0.0931 0.2786 -0.40886 2012 2 26 55983 0.0924 0.2787 -0.40980 2012 2 27 55984 0.0918 0.2787 -0.41066 2012 2 28 55985 0.0911 0.2787 -0.41147 2012 2 29 55986 0.0905 0.2787 -0.41230 2012 3 1 55987 0.0899 0.2788 -0.41314 2012 3 2 55988 0.0892 0.2788 -0.41406 2012 3 3 55989 0.0886 0.2789 -0.41509 2012 3 4 55990 0.0880 0.2790 -0.41628 2012 3 5 55991 0.0874 0.2791 -0.41767 2012 3 6 55992 0.0868 0.2792 -0.41922 2012 3 7 55993 0.0862 0.2793 -0.42092 2012 3 8 55994 0.0857 0.2794 -0.42281 2012 3 9 55995 0.0851 0.2795 -0.42481 2012 3 10 55996 0.0845 0.2796 -0.42683 2012 3 11 55997 0.0840 0.2797 -0.42873 2012 3 12 55998 0.0835 0.2799 -0.43042 2012 3 13 55999 0.0829 0.2800 -0.43194 2012 3 14 56000 0.0824 0.2802 -0.43333 2012 3 15 56001 0.0819 0.2803 -0.43465 2012 3 16 56002 0.0814 0.2805 -0.43597 2012 3 17 56003 0.0809 0.2807 -0.43737 2012 3 18 56004 0.0804 0.2809 -0.43885 2012 3 19 56005 0.0800 0.2811 -0.44039 2012 3 20 56006 0.0795 0.2813 -0.44197 2012 3 21 56007 0.0791 0.2815 -0.44357 2012 3 22 56008 0.0786 0.2817 -0.44515 2012 3 23 56009 0.0782 0.2819 -0.44668 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) 55625 -66.75 0.52 -8.41 0.23 55626 -66.70 0.52 -8.51 0.23 55627 -66.72 0.52 -8.76 0.23 55628 -66.67 0.74 -9.02 0.34 55629 -66.47 0.13 -9.20 0.34 55630 -66.24 0.13 -9.40 0.34 55631 -66.22 0.13 -9.65 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55625 0.039 0.207 -0.350 0.230 55626 0.027 0.207 -0.339 0.230 55627 0.010 0.207 -0.341 0.230 55628 -0.001 0.294 -0.360 0.340 55629 0.001 0.052 -0.372 0.340 55630 0.017 0.052 -0.405 0.340 55631 0.036 0.052 -0.432 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.