********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 5 May 2011 Vol. XXIV No. 018 ______________________________________________________________________ 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 = -0.3 seconds beginning 12 May 2011 at 0000 UTC Beginning 1 January 2009: TAI-UTC(BIPM) = 34.000 000 seconds ********************************************************************** * As of Bulletin A Vol. XXIV, No. 018, on 05 May 2011, we have * * incorporated the new USNO VLBI solutions usno2011a and int2011a. * * The effect appears to be less than 0.1 mas in polar motion * * and 10 us in UT1-UTC. * ********************************************************************** ________________________________________________________________________ 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 4 29 55680 -.04503 .00009 0.33613 .00009 -0.242758 0.000008 11 4 30 55681 -.04465 .00009 0.33858 .00010 -0.243865 0.000010 11 5 1 55682 -.04400 .00009 0.34122 .00010 -0.244906 0.000010 11 5 2 55683 -.04322 .00009 0.34406 .00010 -0.245878 0.000008 11 5 3 55684 -.04266 .00009 0.34675 .00009 -0.246799 0.000008 11 5 4 55685 -.04233 .00009 0.34911 .00010 -0.247699 0.000008 11 5 5 55686 -.04188 .00009 0.35129 .00010 -0.248570 0.000008 IERS Final Values MJD x y UT1-UTC " " s 11 3 2 55622 -0.0007 0.2294 -0.17919 11 3 3 55623 -0.0018 0.2305 -0.18008 11 3 4 55624 -0.0026 0.2320 -0.18116 11 3 5 55625 -0.0031 0.2335 -0.18231 11 3 6 55626 -0.0034 0.2355 -0.18351 11 3 7 55627 -0.0045 0.2375 -0.18469 11 3 8 55628 -0.0058 0.2390 -0.18575 11 3 9 55629 -0.0070 0.2405 -0.18672 11 3 10 55630 -0.0078 0.2423 -0.18761 11 3 11 55631 -0.0089 0.2443 -0.18841 11 3 12 55632 -0.0104 0.2462 -0.18910 11 3 13 55633 -0.0117 0.2480 -0.18970 11 3 14 55634 -0.0135 0.2497 -0.19030 11 3 15 55635 -0.0153 0.2506 -0.19103 11 3 16 55636 -0.0168 0.2517 -0.19200 11 3 17 55637 -0.0183 0.2531 -0.19321 11 3 18 55638 -0.0196 0.2545 -0.19465 11 3 19 55639 -0.0207 0.2560 -0.19624 11 3 20 55640 -0.0217 0.2577 -0.19786 11 3 21 55641 -0.0228 0.2598 -0.19938 11 3 22 55642 -0.0245 0.2618 -0.20073 11 3 23 55643 -0.0258 0.2635 -0.20185 11 3 24 55644 -0.0269 0.2653 -0.20277 11 3 25 55645 -0.0272 0.2671 -0.20358 11 3 26 55646 -0.0275 0.2690 -0.20442 11 3 27 55647 -0.0285 0.2708 -0.20532 11 3 28 55648 -0.0294 0.2727 -0.20634 11 3 29 55649 -0.0303 0.2743 -0.20753 11 3 30 55650 -0.0309 0.2758 -0.20884 11 3 31 55651 -0.0318 0.2775 -0.21024 11 4 1 55652 -0.0331 0.2791 -0.21171 _______________________________________________________________________ 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 = 0.0878 - 0.0931 cos A + 0.0643 sin A - 0.0345 cos C - 0.0397 sin C y = 0.3303 + 0.0591 cos A + 0.0845 sin A - 0.0397 cos C + 0.0345 sin C UT1-UTC = -0.2214 - 0.00064 (MJD - 55694) - (UT2-UT1) where A = 2*pi*(MJD-55686)/365.25 and C = 2*pi*(MJD-55686)/435. TAI-UTC(MJD 55687) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55686)**0.80 S t = 0.00025 (MJD-55686)**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 6 55687 -0.0414 0.3533 -0.24941 2011 5 7 55688 -0.0408 0.3553 -0.25027 2011 5 8 55689 -0.0402 0.3572 -0.25119 2011 5 9 55690 -0.0395 0.3592 -0.25224 2011 5 10 55691 -0.0387 0.3611 -0.25347 2011 5 11 55692 -0.0379 0.3630 -0.25490 2011 5 12 55693 -0.0372 0.3648 -0.25653 2011 5 13 55694 -0.0364 0.3666 -0.25828 2011 5 14 55695 -0.0355 0.3684 -0.26003 2011 5 15 55696 -0.0347 0.3701 -0.26166 2011 5 16 55697 -0.0338 0.3719 -0.26308 2011 5 17 55698 -0.0329 0.3736 -0.26424 2011 5 18 55699 -0.0319 0.3752 -0.26516 2011 5 19 55700 -0.0309 0.3769 -0.26586 2011 5 20 55701 -0.0300 0.3786 -0.26644 2011 5 21 55702 -0.0289 0.3802 -0.26699 2011 5 22 55703 -0.0279 0.3818 -0.26757 2011 5 23 55704 -0.0268 0.3834 -0.26821 2011 5 24 55705 -0.0257 0.3850 -0.26890 2011 5 25 55706 -0.0246 0.3865 -0.26961 2011 5 26 55707 -0.0235 0.3881 -0.27032 2011 5 27 55708 -0.0223 0.3896 -0.27097 2011 5 28 55709 -0.0211 0.3911 -0.27151 2011 5 29 55710 -0.0199 0.3925 -0.27194 2011 5 30 55711 -0.0187 0.3940 -0.27223 2011 5 31 55712 -0.0174 0.3954 -0.27239 2011 6 1 55713 -0.0161 0.3969 -0.27243 2011 6 2 55714 -0.0148 0.3983 -0.27241 2011 6 3 55715 -0.0135 0.3997 -0.27238 2011 6 4 55716 -0.0122 0.4010 -0.27240 2011 6 5 55717 -0.0109 0.4024 -0.27255 2011 6 6 55718 -0.0095 0.4037 -0.27286 2011 6 7 55719 -0.0081 0.4050 -0.27336 2011 6 8 55720 -0.0067 0.4063 -0.27400 2011 6 9 55721 -0.0053 0.4075 -0.27474 2011 6 10 55722 -0.0038 0.4087 -0.27547 2011 6 11 55723 -0.0024 0.4100 -0.27610 2011 6 12 55724 -0.0009 0.4112 -0.27656 2011 6 13 55725 0.0006 0.4123 -0.27679 2011 6 14 55726 0.0021 0.4135 -0.27681 2011 6 15 55727 0.0036 0.4146 -0.27666 2011 6 16 55728 0.0051 0.4157 -0.27644 2011 6 17 55729 0.0067 0.4168 -0.27623 2011 6 18 55730 0.0082 0.4178 -0.27609 2011 6 19 55731 0.0098 0.4189 -0.27605 2011 6 20 55732 0.0114 0.4199 -0.27609 2011 6 21 55733 0.0129 0.4209 -0.27618 2011 6 22 55734 0.0145 0.4218 -0.27630 2011 6 23 55735 0.0162 0.4227 -0.27640 2011 6 24 55736 0.0178 0.4237 -0.27645 2011 6 25 55737 0.0194 0.4245 -0.27639 2011 6 26 55738 0.0211 0.4254 -0.27622 2011 6 27 55739 0.0227 0.4263 -0.27591 2011 6 28 55740 0.0244 0.4271 -0.27548 2011 6 29 55741 0.0261 0.4279 -0.27496 2011 6 30 55742 0.0277 0.4286 -0.27440 2011 7 1 55743 0.0294 0.4294 -0.27388 2011 7 2 55744 0.0311 0.4301 -0.27347 2011 7 3 55745 0.0328 0.4308 -0.27323 2011 7 4 55746 0.0345 0.4314 -0.27319 2011 7 5 55747 0.0362 0.4321 -0.27334 2011 7 6 55748 0.0379 0.4327 -0.27361 2011 7 7 55749 0.0396 0.4333 -0.27392 2011 7 8 55750 0.0414 0.4338 -0.27415 2011 7 9 55751 0.0431 0.4344 -0.27422 2011 7 10 55752 0.0448 0.4349 -0.27409 2011 7 11 55753 0.0466 0.4354 -0.27376 2011 7 12 55754 0.0483 0.4358 -0.27327 2011 7 13 55755 0.0500 0.4363 -0.27270 2011 7 14 55756 0.0518 0.4367 -0.27212 2011 7 15 55757 0.0535 0.4371 -0.27161 2011 7 16 55758 0.0552 0.4374 -0.27121 2011 7 17 55759 0.0570 0.4378 -0.27092 2011 7 18 55760 0.0587 0.4381 -0.27073 2011 7 19 55761 0.0604 0.4383 -0.27059 2011 7 20 55762 0.0622 0.4386 -0.27046 2011 7 21 55763 0.0639 0.4388 -0.27030 2011 7 22 55764 0.0656 0.4390 -0.27006 2011 7 23 55765 0.0674 0.4392 -0.26971 2011 7 24 55766 0.0691 0.4394 -0.26925 2011 7 25 55767 0.0708 0.4395 -0.26867 2011 7 26 55768 0.0725 0.4396 -0.26801 2011 7 27 55769 0.0742 0.4397 -0.26731 2011 7 28 55770 0.0760 0.4397 -0.26664 2011 7 29 55771 0.0777 0.4398 -0.26607 2011 7 30 55772 0.0794 0.4398 -0.26567 2011 7 31 55773 0.0810 0.4398 -0.26551 2011 8 1 55774 0.0827 0.4397 -0.26558 2011 8 2 55775 0.0844 0.4396 -0.26583 2011 8 3 55776 0.0861 0.4396 -0.26618 2011 8 4 55777 0.0877 0.4394 -0.26648 2011 8 5 55778 0.0894 0.4393 -0.26666 2011 8 6 55779 0.0910 0.4391 -0.26663 2011 8 7 55780 0.0927 0.4389 -0.26639 2011 8 8 55781 0.0943 0.4387 -0.26599 2011 8 9 55782 0.0959 0.4385 -0.26550 2011 8 10 55783 0.0975 0.4382 -0.26501 2011 8 11 55784 0.0991 0.4380 -0.26458 2011 8 12 55785 0.1007 0.4377 -0.26427 2011 8 13 55786 0.1023 0.4373 -0.26409 2011 8 14 55787 0.1038 0.4370 -0.26404 2011 8 15 55788 0.1054 0.4366 -0.26408 2011 8 16 55789 0.1069 0.4362 -0.26417 2011 8 17 55790 0.1084 0.4358 -0.26426 2011 8 18 55791 0.1099 0.4354 -0.26430 2011 8 19 55792 0.1114 0.4349 -0.26426 2011 8 20 55793 0.1129 0.4344 -0.26412 2011 8 21 55794 0.1144 0.4339 -0.26388 2011 8 22 55795 0.1159 0.4334 -0.26358 2011 8 23 55796 0.1173 0.4329 -0.26325 2011 8 24 55797 0.1187 0.4323 -0.26292 2011 8 25 55798 0.1201 0.4317 -0.26267 2011 8 26 55799 0.1215 0.4311 -0.26259 2011 8 27 55800 0.1229 0.4305 -0.26272 2011 8 28 55801 0.1243 0.4298 -0.26312 2011 8 29 55802 0.1256 0.4292 -0.26376 2011 8 30 55803 0.1270 0.4285 -0.26455 2011 8 31 55804 0.1283 0.4278 -0.26539 2011 9 1 55805 0.1296 0.4271 -0.26613 2011 9 2 55806 0.1308 0.4264 -0.26668 2011 9 3 55807 0.1321 0.4256 -0.26701 2011 9 4 55808 0.1334 0.4248 -0.26714 2011 9 5 55809 0.1346 0.4241 -0.26716 2011 9 6 55810 0.1358 0.4232 -0.26715 2011 9 7 55811 0.1370 0.4224 -0.26719 2011 9 8 55812 0.1382 0.4216 -0.26733 2011 9 9 55813 0.1393 0.4207 -0.26761 2011 9 10 55814 0.1404 0.4199 -0.26801 2011 9 11 55815 0.1416 0.4190 -0.26851 2011 9 12 55816 0.1426 0.4181 -0.26907 2011 9 13 55817 0.1437 0.4172 -0.26966 2011 9 14 55818 0.1448 0.4162 -0.27020 2011 9 15 55819 0.1458 0.4153 -0.27068 2011 9 16 55820 0.1468 0.4143 -0.27107 2011 9 17 55821 0.1478 0.4134 -0.27135 2011 9 18 55822 0.1488 0.4124 -0.27156 2011 9 19 55823 0.1497 0.4114 -0.27171 2011 9 20 55824 0.1507 0.4104 -0.27186 2011 9 21 55825 0.1516 0.4094 -0.27206 2011 9 22 55826 0.1525 0.4083 -0.27238 2011 9 23 55827 0.1534 0.4073 -0.27289 2011 9 24 55828 0.1542 0.4062 -0.27364 2011 9 25 55829 0.1550 0.4052 -0.27465 2011 9 26 55830 0.1558 0.4041 -0.27588 2011 9 27 55831 0.1566 0.4030 -0.27722 2011 9 28 55832 0.1574 0.4019 -0.27854 2011 9 29 55833 0.1581 0.4008 -0.27972 2011 9 30 55834 0.1588 0.3997 -0.28068 2011 10 1 55835 0.1595 0.3986 -0.28141 2011 10 2 55836 0.1602 0.3974 -0.28197 2011 10 3 55837 0.1609 0.3963 -0.28246 2011 10 4 55838 0.1615 0.3951 -0.28296 2011 10 5 55839 0.1621 0.3940 -0.28354 2011 10 6 55840 0.1627 0.3928 -0.28422 2011 10 7 55841 0.1632 0.3916 -0.28502 2011 10 8 55842 0.1638 0.3905 -0.28591 2011 10 9 55843 0.1643 0.3893 -0.28686 2011 10 10 55844 0.1648 0.3881 -0.28782 2011 10 11 55845 0.1653 0.3869 -0.28876 2011 10 12 55846 0.1657 0.3857 -0.28963 2011 10 13 55847 0.1662 0.3845 -0.29041 2011 10 14 55848 0.1666 0.3833 -0.29108 2011 10 15 55849 0.1670 0.3820 -0.29166 2011 10 16 55850 0.1673 0.3808 -0.29217 2011 10 17 55851 0.1677 0.3796 -0.29264 2011 10 18 55852 0.1680 0.3784 -0.29315 2011 10 19 55853 0.1683 0.3771 -0.29373 2011 10 20 55854 0.1686 0.3759 -0.29446 2011 10 21 55855 0.1688 0.3747 -0.29539 2011 10 22 55856 0.1691 0.3734 -0.29654 2011 10 23 55857 0.1693 0.3722 -0.29791 2011 10 24 55858 0.1695 0.3710 -0.29944 2011 10 25 55859 0.1696 0.3697 -0.30102 2011 10 26 55860 0.1698 0.3685 -0.30252 2011 10 27 55861 0.1699 0.3672 -0.30384 2011 10 28 55862 0.1700 0.3660 -0.30493 2011 10 29 55863 0.1701 0.3648 -0.30583 2011 10 30 55864 0.1701 0.3635 -0.30659 2011 10 31 55865 0.1702 0.3623 -0.30732 2011 11 1 55866 0.1702 0.3610 -0.30809 2011 11 2 55867 0.1702 0.3598 -0.30895 2011 11 3 55868 0.1702 0.3586 -0.30990 2011 11 4 55869 0.1702 0.3573 -0.31091 2011 11 5 55870 0.1701 0.3561 -0.31197 2011 11 6 55871 0.1700 0.3549 -0.31302 2011 11 7 55872 0.1699 0.3536 -0.31402 2011 11 8 55873 0.1698 0.3524 -0.31494 2011 11 9 55874 0.1697 0.3512 -0.31575 2011 11 10 55875 0.1695 0.3500 -0.31644 2011 11 11 55876 0.1693 0.3488 -0.31701 2011 11 12 55877 0.1691 0.3476 -0.31750 2011 11 13 55878 0.1689 0.3464 -0.31795 2011 11 14 55879 0.1687 0.3452 -0.31841 2011 11 15 55880 0.1684 0.3440 -0.31894 2011 11 16 55881 0.1681 0.3428 -0.31960 2011 11 17 55882 0.1679 0.3416 -0.32043 2011 11 18 55883 0.1676 0.3404 -0.32147 2011 11 19 55884 0.1672 0.3393 -0.32271 2011 11 20 55885 0.1669 0.3381 -0.32411 2011 11 21 55886 0.1665 0.3370 -0.32560 2011 11 22 55887 0.1662 0.3358 -0.32708 2011 11 23 55888 0.1658 0.3347 -0.32845 2011 11 24 55889 0.1654 0.3335 -0.32964 2011 11 25 55890 0.1649 0.3324 -0.33062 2011 11 26 55891 0.1645 0.3313 -0.33145 2011 11 27 55892 0.1640 0.3302 -0.33220 2011 11 28 55893 0.1636 0.3291 -0.33295 2011 11 29 55894 0.1631 0.3280 -0.33377 2011 11 30 55895 0.1626 0.3269 -0.33469 2011 12 1 55896 0.1620 0.3258 -0.33569 2011 12 2 55897 0.1615 0.3248 -0.33675 2011 12 3 55898 0.1610 0.3237 -0.33785 2011 12 4 55899 0.1604 0.3227 -0.33893 2011 12 5 55900 0.1598 0.3216 -0.33996 2011 12 6 55901 0.1592 0.3206 -0.34091 2011 12 7 55902 0.1586 0.3196 -0.34174 2011 12 8 55903 0.1580 0.3186 -0.34247 2011 12 9 55904 0.1574 0.3176 -0.34312 2011 12 10 55905 0.1568 0.3166 -0.34374 2011 12 11 55906 0.1561 0.3156 -0.34438 2011 12 12 55907 0.1555 0.3146 -0.34508 2011 12 13 55908 0.1548 0.3137 -0.34587 2011 12 14 55909 0.1541 0.3128 -0.34680 2011 12 15 55910 0.1534 0.3118 -0.34789 2011 12 16 55911 0.1527 0.3109 -0.34911 2011 12 17 55912 0.1520 0.3100 -0.35045 2011 12 18 55913 0.1513 0.3091 -0.35184 2011 12 19 55914 0.1505 0.3082 -0.35317 2011 12 20 55915 0.1498 0.3074 -0.35431 2011 12 21 55916 0.1490 0.3065 -0.35524 2011 12 22 55917 0.1483 0.3057 -0.35588 2011 12 23 55918 0.1475 0.3048 -0.35629 2011 12 24 55919 0.1467 0.3040 -0.35665 2011 12 25 55920 0.1459 0.3032 -0.35695 2011 12 26 55921 0.1451 0.3024 -0.35732 2011 12 27 55922 0.1443 0.3016 -0.35780 2011 12 28 55923 0.1435 0.3008 -0.35842 2011 12 29 55924 0.1427 0.3001 -0.35910 2011 12 30 55925 0.1419 0.2993 -0.35975 2011 12 31 55926 0.1410 0.2986 -0.36036 2012 1 1 55927 0.1402 0.2979 -0.36085 2012 1 2 55928 0.1393 0.2972 -0.36122 2012 1 3 55929 0.1385 0.2965 -0.36153 2012 1 4 55930 0.1376 0.2958 -0.36175 2012 1 5 55931 0.1368 0.2952 -0.36188 2012 1 6 55932 0.1359 0.2945 -0.36193 2012 1 7 55933 0.1350 0.2939 -0.36196 2012 1 8 55934 0.1342 0.2933 -0.36206 2012 1 9 55935 0.1333 0.2926 -0.36225 2012 1 10 55936 0.1324 0.2920 -0.36261 2012 1 11 55937 0.1315 0.2915 -0.36321 2012 1 12 55938 0.1307 0.2909 -0.36401 2012 1 13 55939 0.1298 0.2903 -0.36497 2012 1 14 55940 0.1289 0.2898 -0.36608 2012 1 15 55941 0.1280 0.2893 -0.36717 2012 1 16 55942 0.1271 0.2888 -0.36816 2012 1 17 55943 0.1262 0.2883 -0.36899 2012 1 18 55944 0.1253 0.2878 -0.36965 2012 1 19 55945 0.1244 0.2873 -0.37018 2012 1 20 55946 0.1235 0.2868 -0.37066 2012 1 21 55947 0.1226 0.2864 -0.37118 2012 1 22 55948 0.1217 0.2860 -0.37177 2012 1 23 55949 0.1208 0.2856 -0.37251 2012 1 24 55950 0.1199 0.2851 -0.37337 2012 1 25 55951 0.1190 0.2848 -0.37434 2012 1 26 55952 0.1182 0.2844 -0.37535 2012 1 27 55953 0.1173 0.2840 -0.37638 2012 1 28 55954 0.1164 0.2837 -0.37740 2012 1 29 55955 0.1155 0.2833 -0.37832 2012 1 30 55956 0.1146 0.2830 -0.37910 2012 1 31 55957 0.1137 0.2827 -0.37979 2012 2 1 55958 0.1128 0.2824 -0.38036 2012 2 2 55959 0.1120 0.2821 -0.38080 2012 2 3 55960 0.1111 0.2818 -0.38123 2012 2 4 55961 0.1102 0.2816 -0.38168 2012 2 5 55962 0.1093 0.2813 -0.38222 2012 2 6 55963 0.1085 0.2811 -0.38294 2012 2 7 55964 0.1076 0.2809 -0.38392 2012 2 8 55965 0.1068 0.2807 -0.38511 2012 2 9 55966 0.1059 0.2805 -0.38648 2012 2 10 55967 0.1051 0.2803 -0.38797 2012 2 11 55968 0.1042 0.2801 -0.38947 2012 2 12 55969 0.1034 0.2800 -0.39093 2012 2 13 55970 0.1025 0.2798 -0.39226 2012 2 14 55971 0.1017 0.2797 -0.39338 2012 2 15 55972 0.1009 0.2796 -0.39432 2012 2 16 55973 0.1001 0.2795 -0.39515 2012 2 17 55974 0.0993 0.2794 -0.39592 2012 2 18 55975 0.0985 0.2793 -0.39673 2012 2 19 55976 0.0977 0.2792 -0.39759 2012 2 20 55977 0.0969 0.2791 -0.39853 2012 2 21 55978 0.0961 0.2791 -0.39953 2012 2 22 55979 0.0953 0.2790 -0.40061 2012 2 23 55980 0.0946 0.2790 -0.40175 2012 2 24 55981 0.0938 0.2790 -0.40290 2012 2 25 55982 0.0930 0.2790 -0.40401 2012 2 26 55983 0.0923 0.2790 -0.40504 2012 2 27 55984 0.0915 0.2790 -0.40597 2012 2 28 55985 0.0908 0.2790 -0.40673 2012 2 29 55986 0.0901 0.2790 -0.40737 2012 3 1 55987 0.0894 0.2791 -0.40793 2012 3 2 55988 0.0887 0.2791 -0.40855 2012 3 3 55989 0.0880 0.2792 -0.40919 2012 3 4 55990 0.0873 0.2792 -0.41004 2012 3 5 55991 0.0866 0.2793 -0.41115 2012 3 6 55992 0.0859 0.2794 -0.41248 2012 3 7 55993 0.0853 0.2795 -0.41405 2012 3 8 55994 0.0846 0.2796 -0.41570 2012 3 9 55995 0.0840 0.2797 -0.41739 2012 3 10 55996 0.0833 0.2799 -0.41898 2012 3 11 55997 0.0827 0.2800 -0.42043 2012 3 12 55998 0.0821 0.2801 -0.42172 2012 3 13 55999 0.0815 0.2803 -0.42283 2012 3 14 56000 0.0809 0.2804 -0.42381 2012 3 15 56001 0.0803 0.2806 -0.42474 2012 3 16 56002 0.0797 0.2808 -0.42567 2012 3 17 56003 0.0791 0.2809 -0.42664 2012 3 18 56004 0.0786 0.2811 -0.42770 2012 3 19 56005 0.0780 0.2813 -0.42891 2012 3 20 56006 0.0775 0.2815 -0.43024 2012 3 21 56007 0.0770 0.2817 -0.43164 2012 3 22 56008 0.0764 0.2819 -0.43307 2012 3 23 56009 0.0759 0.2821 -0.43444 2012 3 24 56010 0.0754 0.2824 -0.43569 2012 3 25 56011 0.0749 0.2826 -0.43687 2012 3 26 56012 0.0745 0.2828 -0.43791 2012 3 27 56013 0.0740 0.2831 -0.43881 2012 3 28 56014 0.0735 0.2833 -0.43961 2012 3 29 56015 0.0731 0.2836 -0.44036 2012 3 30 56016 0.0726 0.2838 -0.44112 2012 3 31 56017 0.0722 0.2841 -0.44194 2012 4 1 56018 0.0718 0.2844 -0.44289 2012 4 2 56019 0.0714 0.2846 -0.44401 2012 4 3 56020 0.0710 0.2849 -0.44536 2012 4 4 56021 0.0706 0.2852 -0.44689 2012 4 5 56022 0.0702 0.2855 -0.44862 2012 4 6 56023 0.0698 0.2858 -0.45049 2012 4 7 56024 0.0695 0.2860 -0.45228 2012 4 8 56025 0.0691 0.2863 -0.45391 2012 4 9 56026 0.0688 0.2866 -0.45537 2012 4 10 56027 0.0685 0.2869 -0.45672 2012 4 11 56028 0.0681 0.2873 -0.45801 2012 4 12 56029 0.0678 0.2876 -0.45931 2012 4 13 56030 0.0675 0.2879 -0.46065 2012 4 14 56031 0.0672 0.2882 -0.46207 2012 4 15 56032 0.0670 0.2885 -0.46355 2012 4 16 56033 0.0667 0.2888 -0.46509 2012 4 17 56034 0.0664 0.2891 -0.46661 2012 4 18 56035 0.0662 0.2895 -0.46816 2012 4 19 56036 0.0659 0.2898 -0.46969 2012 4 20 56037 0.0657 0.2901 -0.47118 2012 4 21 56038 0.0655 0.2904 -0.47260 2012 4 22 56039 0.0653 0.2908 -0.47392 2012 4 23 56040 0.0651 0.2911 -0.47513 2012 4 24 56041 0.0649 0.2914 -0.47624 2012 4 25 56042 0.0647 0.2918 -0.47728 2012 4 26 56043 0.0645 0.2921 -0.47838 2012 4 27 56044 0.0643 0.2924 -0.47963 2012 4 28 56045 0.0642 0.2928 -0.48100 2012 4 29 56046 0.0640 0.2931 -0.48243 2012 4 30 56047 0.0639 0.2934 -0.48399 2012 5 1 56048 0.0637 0.2938 -0.48577 2012 5 2 56049 0.0636 0.2941 -0.48773 2012 5 3 56050 0.0635 0.2944 -0.48983 2012 5 4 56051 0.0634 0.2948 -0.49188 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) 55667 -65.25 0.32 -10.94 0.34 55668 -65.61 0.32 -10.71 0.34 55669 -65.90 0.27 -10.79 0.34 55670 -66.00 0.74 -11.04 0.34 55671 -65.95 0.74 -11.25 0.34 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 55622 -67.2 -8.7 55623 -67.1 -8.5 55624 -67.1 -8.3 55625 -66.9 -8.3 55626 -66.8 -8.5 55627 -66.7 -8.8 55628 -66.5 -9.1 55629 -66.2 -9.3 55630 -65.9 -9.4 55631 -65.8 -9.6 55632 -66.3 -9.8 55633 -66.8 -9.8 55634 -67.2 -9.6 55635 -67.5 -9.6 55636 -67.5 -9.7 55637 -66.9 -10.0 55638 -66.1 -9.9 55639 -65.8 -9.5 55640 -66.1 -9.2 55641 -66.4 -9.3 55642 -66.6 -9.6 55643 -66.6 -9.8 55644 -66.5 -10.0 55645 -66.3 -10.3 55646 -66.0 -10.5 55647 -66.1 -10.6 55648 -66.3 -10.5 55649 -66.5 -10.3 55650 -66.5 -10.3 55651 -66.2 -10.2 55652 -65.9 -10.1 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55667 -0.194 0.127 -0.306 0.340 55668 -0.185 0.127 -0.319 0.340 55669 -0.172 0.107 -0.297 0.340 55670 -0.174 0.294 -0.252 0.340 55671 -0.189 0.294 -0.240 0.340 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 55622 0.13 -0.31 55623 0.07 -0.22 55624 -0.03 -0.17 55625 -0.02 -0.24 55626 -0.01 -0.33 55627 0.02 -0.38 55628 0.07 -0.44 55629 0.11 -0.47 55630 0.15 -0.41 55631 0.20 -0.38 55632 0.11 -0.39 55633 0.05 -0.36 55634 -0.03 -0.25 55635 -0.15 -0.24 55636 -0.22 -0.13 55637 -0.15 -0.25 55638 -0.01 -0.32 55639 0.04 -0.37 55640 -0.01 -0.39 55641 -0.02 -0.43 55642 -0.04 -0.44 55643 -0.03 -0.36 55644 -0.03 -0.31 55645 -0.04 -0.32 55646 0.01 -0.27 55647 0.01 -0.29 55648 0.07 -0.26 55649 0.09 -0.15 55650 0.04 -0.19 55651 0.00 -0.14 55652 -0.06 -0.17 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).