********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 13 January 2011 Vol. XXIV No. 002 ______________________________________________________________________ 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 ********************************************************************** * As of Bulletin A Vol. XXIV, No. 005, on 03 Feb 2011, we will * * adopt the new 08C04 EOP system. This will result in a jump of * * less than 0.1 mas in polar motion and 10 us in UT1-UTC. The * * only users who need to be concerned with this change are those * * who need EOP accuracy to better than 0.1 mas (~0.3 cm at the * * Earth's surface, ~1.3 cm at GPS orbit). * ********************************************************************** ________________________________________________________________________ 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 1 7 55568 0.11008 .00009 0.19933 .00010 -0.142053 0.000009 11 1 8 55569 0.10637 .00009 0.19866 .00010 -0.142577 0.000009 11 1 9 55570 0.10316 .00009 0.19770 .00009 -0.143136 0.000010 11 1 10 55571 0.10112 .00009 0.19673 .00009 -0.143748 0.000009 11 1 11 55572 0.09996 .00010 0.19607 .00009 -0.144366 0.000007 11 1 12 55573 0.09905 .00010 0.19593 .00009 -0.144942 0.000008 11 1 13 55574 0.09761 .00010 0.19619 .00009 -0.145455 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 = 0.0795 - 0.0121 cos A - 0.1132 sin A + 0.0275 cos C - 0.0339 sin C y = 0.3299 - 0.1011 cos A + 0.0156 sin A - 0.0339 cos C - 0.0275 sin C UT1-UTC = -0.1404 - 0.00072 (MJD - 55582) - (UT2-UT1) where A = 2*pi*(MJD-55574)/365.25 and C = 2*pi*(MJD-55574)/435. TAI-UTC(MJD 55575) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55574)**0.80 S t = 0.00025 (MJD-55574)**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 1 14 55575 0.0960 0.1964 -0.14588 2011 1 15 55576 0.0939 0.1967 -0.14619 2011 1 16 55577 0.0917 0.1968 -0.14640 2011 1 17 55578 0.0894 0.1969 -0.14653 2011 1 18 55579 0.0873 0.1969 -0.14665 2011 1 19 55580 0.0853 0.1970 -0.14685 2011 1 20 55581 0.0834 0.1972 -0.14721 2011 1 21 55582 0.0814 0.1974 -0.14780 2011 1 22 55583 0.0794 0.1977 -0.14862 2011 1 23 55584 0.0774 0.1981 -0.14964 2011 1 24 55585 0.0754 0.1985 -0.15073 2011 1 25 55586 0.0733 0.1988 -0.15177 2011 1 26 55587 0.0713 0.1992 -0.15261 2011 1 27 55588 0.0693 0.1996 -0.15322 2011 1 28 55589 0.0673 0.2001 -0.15359 2011 1 29 55590 0.0653 0.2006 -0.15381 2011 1 30 55591 0.0634 0.2011 -0.15397 2011 1 31 55592 0.0614 0.2017 -0.15414 2011 2 1 55593 0.0595 0.2023 -0.15440 2011 2 2 55594 0.0575 0.2029 -0.15478 2011 2 3 55595 0.0556 0.2035 -0.15530 2011 2 4 55596 0.0537 0.2042 -0.15593 2011 2 5 55597 0.0518 0.2049 -0.15664 2011 2 6 55598 0.0499 0.2056 -0.15740 2011 2 7 55599 0.0481 0.2064 -0.15814 2011 2 8 55600 0.0462 0.2072 -0.15884 2011 2 9 55601 0.0444 0.2080 -0.15946 2011 2 10 55602 0.0426 0.2089 -0.15997 2011 2 11 55603 0.0408 0.2097 -0.16037 2011 2 12 55604 0.0390 0.2106 -0.16071 2011 2 13 55605 0.0373 0.2116 -0.16101 2011 2 14 55606 0.0355 0.2125 -0.16133 2011 2 15 55607 0.0338 0.2135 -0.16177 2011 2 16 55608 0.0321 0.2145 -0.16242 2011 2 17 55609 0.0305 0.2156 -0.16333 2011 2 18 55610 0.0288 0.2166 -0.16453 2011 2 19 55611 0.0272 0.2177 -0.16595 2011 2 20 55612 0.0256 0.2188 -0.16747 2011 2 21 55613 0.0240 0.2199 -0.16893 2011 2 22 55614 0.0225 0.2211 -0.17022 2011 2 23 55615 0.0209 0.2223 -0.17127 2011 2 24 55616 0.0194 0.2235 -0.17208 2011 2 25 55617 0.0179 0.2247 -0.17271 2011 2 26 55618 0.0164 0.2260 -0.17324 2011 2 27 55619 0.0150 0.2273 -0.17376 2011 2 28 55620 0.0136 0.2286 -0.17434 2011 3 1 55621 0.0122 0.2299 -0.17503 2011 3 2 55622 0.0108 0.2312 -0.17586 2011 3 3 55623 0.0095 0.2326 -0.17682 2011 3 4 55624 0.0082 0.2340 -0.17787 2011 3 5 55625 0.0069 0.2354 -0.17899 2011 3 6 55626 0.0056 0.2368 -0.18012 2011 3 7 55627 0.0044 0.2382 -0.18121 2011 3 8 55628 0.0032 0.2397 -0.18224 2011 3 9 55629 0.0020 0.2411 -0.18318 2011 3 10 55630 0.0009 0.2426 -0.18401 2011 3 11 55631 -0.0003 0.2441 -0.18475 2011 3 12 55632 -0.0014 0.2457 -0.18543 2011 3 13 55633 -0.0024 0.2472 -0.18611 2011 3 14 55634 -0.0035 0.2488 -0.18686 2011 3 15 55635 -0.0045 0.2504 -0.18777 2011 3 16 55636 -0.0055 0.2520 -0.18891 2011 3 17 55637 -0.0064 0.2536 -0.19032 2011 3 18 55638 -0.0074 0.2552 -0.19199 2011 3 19 55639 -0.0083 0.2568 -0.19382 2011 3 20 55640 -0.0091 0.2585 -0.19568 2011 3 21 55641 -0.0100 0.2601 -0.19741 2011 3 22 55642 -0.0108 0.2618 -0.19891 2011 3 23 55643 -0.0115 0.2635 -0.20013 2011 3 24 55644 -0.0123 0.2652 -0.20111 2011 3 25 55645 -0.0130 0.2669 -0.20193 2011 3 26 55646 -0.0137 0.2686 -0.20269 2011 3 27 55647 -0.0144 0.2703 -0.20347 2011 3 28 55648 -0.0150 0.2721 -0.20432 2011 3 29 55649 -0.0156 0.2738 -0.20528 2011 3 30 55650 -0.0162 0.2756 -0.20633 2011 3 31 55651 -0.0167 0.2773 -0.20748 2011 4 1 55652 -0.0172 0.2791 -0.20869 2011 4 2 55653 -0.0177 0.2809 -0.20991 2011 4 3 55654 -0.0181 0.2827 -0.21111 2011 4 4 55655 -0.0185 0.2845 -0.21224 2011 4 5 55656 -0.0189 0.2863 -0.21327 2011 4 6 55657 -0.0193 0.2881 -0.21418 2011 4 7 55658 -0.0196 0.2899 -0.21499 2011 4 8 55659 -0.0199 0.2917 -0.21570 2011 4 9 55660 -0.0202 0.2935 -0.21638 2011 4 10 55661 -0.0204 0.2953 -0.21708 2011 4 11 55662 -0.0206 0.2971 -0.21788 2011 4 12 55663 -0.0208 0.2990 -0.21885 2011 4 13 55664 -0.0209 0.3008 -0.22005 2011 4 14 55665 -0.0210 0.3026 -0.22150 2011 4 15 55666 -0.0211 0.3044 -0.22314 2011 4 16 55667 -0.0211 0.3063 -0.22489 2011 4 17 55668 -0.0211 0.3081 -0.22660 2011 4 18 55669 -0.0211 0.3099 -0.22814 2011 4 19 55670 -0.0211 0.3117 -0.22943 2011 4 20 55671 -0.0210 0.3136 -0.23046 2011 4 21 55672 -0.0209 0.3154 -0.23129 2011 4 22 55673 -0.0208 0.3172 -0.23201 2011 4 23 55674 -0.0206 0.3190 -0.23272 2011 4 24 55675 -0.0204 0.3209 -0.23347 2011 4 25 55676 -0.0202 0.3227 -0.23431 2011 4 26 55677 -0.0200 0.3245 -0.23524 2011 4 27 55678 -0.0197 0.3263 -0.23624 2011 4 28 55679 -0.0194 0.3281 -0.23729 2011 4 29 55680 -0.0190 0.3299 -0.23834 2011 4 30 55681 -0.0187 0.3317 -0.23936 2011 5 1 55682 -0.0183 0.3334 -0.24030 2011 5 2 55683 -0.0179 0.3352 -0.24110 2011 5 3 55684 -0.0174 0.3370 -0.24178 2011 5 4 55685 -0.0169 0.3387 -0.24233 2011 5 5 55686 -0.0164 0.3405 -0.24277 2011 5 6 55687 -0.0159 0.3422 -0.24316 2011 5 7 55688 -0.0153 0.3440 -0.24353 2011 5 8 55689 -0.0148 0.3457 -0.24396 2011 5 9 55690 -0.0141 0.3474 -0.24452 2011 5 10 55691 -0.0135 0.3491 -0.24526 2011 5 11 55692 -0.0128 0.3508 -0.24620 2011 5 12 55693 -0.0122 0.3525 -0.24731 2011 5 13 55694 -0.0114 0.3542 -0.24854 2011 5 14 55695 -0.0107 0.3558 -0.24978 2011 5 15 55696 -0.0099 0.3575 -0.25091 2011 5 16 55697 -0.0091 0.3591 -0.25183 2011 5 17 55698 -0.0083 0.3607 -0.25250 2011 5 18 55699 -0.0075 0.3623 -0.25295 2011 5 19 55700 -0.0066 0.3639 -0.25326 2011 5 20 55701 -0.0057 0.3655 -0.25351 2011 5 21 55702 -0.0048 0.3671 -0.25379 2011 5 22 55703 -0.0039 0.3686 -0.25415 2011 5 23 55704 -0.0029 0.3702 -0.25459 2011 5 24 55705 -0.0020 0.3717 -0.25510 2011 5 25 55706 -0.0010 0.3732 -0.25566 2011 5 26 55707 0.0000 0.3747 -0.25623 2011 5 27 55708 0.0011 0.3762 -0.25676 2011 5 28 55709 0.0021 0.3776 -0.25722 2011 5 29 55710 0.0032 0.3791 -0.25757 2011 5 30 55711 0.0043 0.3805 -0.25780 2011 5 31 55712 0.0055 0.3819 -0.25789 2011 6 1 55713 0.0066 0.3833 -0.25786 2011 6 2 55714 0.0078 0.3847 -0.25776 2011 6 3 55715 0.0089 0.3860 -0.25763 2011 6 4 55716 0.0101 0.3873 -0.25755 2011 6 5 55717 0.0113 0.3887 -0.25759 2011 6 6 55718 0.0126 0.3899 -0.25779 2011 6 7 55719 0.0138 0.3912 -0.25817 2011 6 8 55720 0.0151 0.3925 -0.25872 2011 6 9 55721 0.0164 0.3937 -0.25938 2011 6 10 55722 0.0177 0.3949 -0.26006 2011 6 11 55723 0.0190 0.3961 -0.26066 2011 6 12 55724 0.0203 0.3973 -0.26110 2011 6 13 55725 0.0217 0.3985 -0.26131 2011 6 14 55726 0.0230 0.3996 -0.26132 2011 6 15 55727 0.0244 0.4007 -0.26117 2011 6 16 55728 0.0258 0.4018 -0.26094 2011 6 17 55729 0.0272 0.4028 -0.26072 2011 6 18 55730 0.0286 0.4039 -0.26057 2011 6 19 55731 0.0300 0.4049 -0.26053 2011 6 20 55732 0.0315 0.4059 -0.26057 2011 6 21 55733 0.0329 0.4069 -0.26068 2011 6 22 55734 0.0344 0.4078 -0.26082 2011 6 23 55735 0.0358 0.4088 -0.26093 2011 6 24 55736 0.0373 0.4097 -0.26098 2011 6 25 55737 0.0388 0.4106 -0.26094 2011 6 26 55738 0.0403 0.4114 -0.26077 2011 6 27 55739 0.0418 0.4123 -0.26048 2011 6 28 55740 0.0433 0.4131 -0.26006 2011 6 29 55741 0.0449 0.4139 -0.25956 2011 6 30 55742 0.0464 0.4147 -0.25903 2011 7 1 55743 0.0479 0.4154 -0.25853 2011 7 2 55744 0.0495 0.4161 -0.25813 2011 7 3 55745 0.0510 0.4168 -0.25791 2011 7 4 55746 0.0526 0.4175 -0.25788 2011 7 5 55747 0.0541 0.4181 -0.25803 2011 7 6 55748 0.0557 0.4188 -0.25831 2011 7 7 55749 0.0573 0.4194 -0.25862 2011 7 8 55750 0.0589 0.4199 -0.25885 2011 7 9 55751 0.0604 0.4205 -0.25892 2011 7 10 55752 0.0620 0.4210 -0.25878 2011 7 11 55753 0.0636 0.4215 -0.25842 2011 7 12 55754 0.0652 0.4220 -0.25790 2011 7 13 55755 0.0668 0.4225 -0.25728 2011 7 14 55756 0.0684 0.4229 -0.25664 2011 7 15 55757 0.0700 0.4233 -0.25604 2011 7 16 55758 0.0716 0.4237 -0.25552 2011 7 17 55759 0.0732 0.4240 -0.25510 2011 7 18 55760 0.0748 0.4244 -0.25474 2011 7 19 55761 0.0764 0.4247 -0.25440 2011 7 20 55762 0.0780 0.4249 -0.25404 2011 7 21 55763 0.0796 0.4252 -0.25363 2011 7 22 55764 0.0811 0.4254 -0.25314 2011 7 23 55765 0.0827 0.4256 -0.25257 2011 7 24 55766 0.0843 0.4258 -0.25191 2011 7 25 55767 0.0859 0.4260 -0.25119 2011 7 26 55768 0.0875 0.4261 -0.25043 2011 7 27 55769 0.0891 0.4262 -0.24968 2011 7 28 55770 0.0906 0.4263 -0.24898 2011 7 29 55771 0.0922 0.4264 -0.24839 2011 7 30 55772 0.0938 0.4264 -0.24798 2011 7 31 55773 0.0953 0.4264 -0.24779 2011 8 1 55774 0.0969 0.4264 -0.24782 2011 8 2 55775 0.0984 0.4264 -0.24803 2011 8 3 55776 0.1000 0.4264 -0.24832 2011 8 4 55777 0.1015 0.4263 -0.24857 2011 8 5 55778 0.1030 0.4262 -0.24868 2011 8 6 55779 0.1046 0.4261 -0.24857 2011 8 7 55780 0.1061 0.4259 -0.24826 2011 8 8 55781 0.1076 0.4257 -0.24778 2011 8 9 55782 0.1091 0.4255 -0.24721 2011 8 10 55783 0.1105 0.4253 -0.24664 2011 8 11 55784 0.1120 0.4251 -0.24614 2011 8 12 55785 0.1135 0.4248 -0.24577 2011 8 13 55786 0.1149 0.4246 -0.24554 2011 8 14 55787 0.1164 0.4243 -0.24543 2011 8 15 55788 0.1178 0.4239 -0.24541 2011 8 16 55789 0.1193 0.4236 -0.24542 2011 8 17 55790 0.1207 0.4232 -0.24539 2011 8 18 55791 0.1221 0.4228 -0.24530 2011 8 19 55792 0.1235 0.4224 -0.24511 2011 8 20 55793 0.1248 0.4220 -0.24481 2011 8 21 55794 0.1262 0.4215 -0.24441 2011 8 22 55795 0.1276 0.4211 -0.24392 2011 8 23 55796 0.1289 0.4206 -0.24340 2011 8 24 55797 0.1302 0.4201 -0.24289 2011 8 25 55798 0.1315 0.4195 -0.24251 2011 8 26 55799 0.1328 0.4190 -0.24237 2011 8 27 55800 0.1341 0.4184 -0.24246 2011 8 28 55801 0.1354 0.4178 -0.24281 2011 8 29 55802 0.1367 0.4172 -0.24345 2011 8 30 55803 0.1379 0.4166 -0.24432 2011 8 31 55804 0.1391 0.4160 -0.24530 2011 9 1 55805 0.1403 0.4153 -0.24622 2011 9 2 55806 0.1415 0.4146 -0.24695 2011 9 3 55807 0.1427 0.4139 -0.24747 2011 9 4 55808 0.1439 0.4132 -0.24776 2011 9 5 55809 0.1450 0.4125 -0.24791 2011 9 6 55810 0.1461 0.4118 -0.24800 2011 9 7 55811 0.1473 0.4110 -0.24817 2011 9 8 55812 0.1483 0.4102 -0.24846 2011 9 9 55813 0.1494 0.4094 -0.24893 2011 9 10 55814 0.1505 0.4086 -0.24958 2011 9 11 55815 0.1515 0.4078 -0.25036 2011 9 12 55816 0.1526 0.4070 -0.25121 2011 9 13 55817 0.1536 0.4061 -0.25208 2011 9 14 55818 0.1546 0.4052 -0.25290 2011 9 15 55819 0.1555 0.4044 -0.25371 2011 9 16 55820 0.1565 0.4035 -0.25454 2011 9 17 55821 0.1574 0.4026 -0.25531 2011 9 18 55822 0.1583 0.4016 -0.25593 2011 9 19 55823 0.1592 0.4007 -0.25646 2011 9 20 55824 0.1601 0.3998 -0.25701 2011 9 21 55825 0.1610 0.3988 -0.25766 2011 9 22 55826 0.1618 0.3978 -0.25846 2011 9 23 55827 0.1626 0.3969 -0.25943 2011 9 24 55828 0.1634 0.3959 -0.26059 2011 9 25 55829 0.1642 0.3949 -0.26200 2011 9 26 55830 0.1650 0.3939 -0.26359 2011 9 27 55831 0.1657 0.3928 -0.26522 2011 9 28 55832 0.1665 0.3918 -0.26683 2011 9 29 55833 0.1672 0.3908 -0.26823 2011 9 30 55834 0.1678 0.3897 -0.26940 2011 10 1 55835 0.1685 0.3886 -0.27038 2011 10 2 55836 0.1692 0.3876 -0.27120 2011 10 3 55837 0.1698 0.3865 -0.27193 2011 10 4 55838 0.1704 0.3854 -0.27261 2011 10 5 55839 0.1710 0.3843 -0.27326 2011 10 6 55840 0.1715 0.3832 -0.27389 2011 10 7 55841 0.1721 0.3821 -0.27453 2011 10 8 55842 0.1726 0.3810 -0.27521 2011 10 9 55843 0.1731 0.3799 -0.27595 2011 10 10 55844 0.1736 0.3788 -0.27676 2011 10 11 55845 0.1741 0.3776 -0.27760 2011 10 12 55846 0.1745 0.3765 -0.27847 2011 10 13 55847 0.1749 0.3753 -0.27931 2011 10 14 55848 0.1753 0.3742 -0.28013 2011 10 15 55849 0.1757 0.3730 -0.28092 2011 10 16 55850 0.1761 0.3719 -0.28168 2011 10 17 55851 0.1764 0.3707 -0.28244 2011 10 18 55852 0.1767 0.3696 -0.28316 2011 10 19 55853 0.1770 0.3684 -0.28390 2011 10 20 55854 0.1773 0.3672 -0.28478 2011 10 21 55855 0.1776 0.3661 -0.28587 2011 10 22 55856 0.1778 0.3649 -0.28722 2011 10 23 55857 0.1781 0.3637 -0.28880 2011 10 24 55858 0.1783 0.3625 -0.29052 2011 10 25 55859 0.1784 0.3614 -0.29231 2011 10 26 55860 0.1786 0.3602 -0.29404 2011 10 27 55861 0.1788 0.3590 -0.29561 2011 10 28 55862 0.1789 0.3578 -0.29694 2011 10 29 55863 0.1790 0.3567 -0.29807 2011 10 30 55864 0.1791 0.3555 -0.29906 2011 10 31 55865 0.1791 0.3543 -0.29996 2011 11 1 55866 0.1792 0.3531 -0.30085 2011 11 2 55867 0.1792 0.3520 -0.30182 2011 11 3 55868 0.1792 0.3508 -0.30285 2011 11 4 55869 0.1792 0.3496 -0.30397 2011 11 5 55870 0.1792 0.3484 -0.30515 2011 11 6 55871 0.1792 0.3473 -0.30631 2011 11 7 55872 0.1791 0.3461 -0.30742 2011 11 8 55873 0.1790 0.3449 -0.30843 2011 11 9 55874 0.1789 0.3438 -0.30930 2011 11 10 55875 0.1788 0.3426 -0.31000 2011 11 11 55876 0.1787 0.3415 -0.31058 2011 11 12 55877 0.1785 0.3403 -0.31110 2011 11 13 55878 0.1784 0.3392 -0.31163 2011 11 14 55879 0.1782 0.3381 -0.31223 2011 11 15 55880 0.1780 0.3369 -0.31285 2011 11 16 55881 0.1778 0.3358 -0.31346 2011 11 17 55882 0.1775 0.3347 -0.31413 2011 11 18 55883 0.1773 0.3336 -0.31496 2011 11 19 55884 0.1770 0.3325 -0.31591 2011 11 20 55885 0.1768 0.3314 -0.31691 2011 11 21 55886 0.1765 0.3303 -0.31799 2011 11 22 55887 0.1761 0.3292 -0.31906 2011 11 23 55888 0.1758 0.3281 -0.32005 2011 11 24 55889 0.1755 0.3270 -0.32091 2011 11 25 55890 0.1751 0.3259 -0.32159 2011 11 26 55891 0.1748 0.3249 -0.32216 2011 11 27 55892 0.1744 0.3238 -0.32267 2011 11 28 55893 0.1740 0.3228 -0.32314 2011 11 29 55894 0.1736 0.3217 -0.32364 2011 11 30 55895 0.1731 0.3207 -0.32422 2011 12 1 55896 0.1727 0.3197 -0.32495 2011 12 2 55897 0.1722 0.3187 -0.32587 2011 12 3 55898 0.1718 0.3177 -0.32685 2011 12 4 55899 0.1713 0.3167 -0.32785 2011 12 5 55900 0.1708 0.3157 -0.32886 2011 12 6 55901 0.1703 0.3147 -0.32971 2011 12 7 55902 0.1698 0.3138 -0.33040 2011 12 8 55903 0.1693 0.3128 -0.33102 2011 12 9 55904 0.1687 0.3119 -0.33154 2011 12 10 55905 0.1682 0.3109 -0.33205 2011 12 11 55906 0.1676 0.3100 -0.33254 2011 12 12 55907 0.1670 0.3091 -0.33306 2011 12 13 55908 0.1665 0.3082 -0.33372 2011 12 14 55909 0.1659 0.3073 -0.33454 2011 12 15 55910 0.1653 0.3064 -0.33551 2011 12 16 55911 0.1647 0.3055 -0.33663 2011 12 17 55912 0.1640 0.3047 -0.33794 2011 12 18 55913 0.1634 0.3038 -0.33932 2011 12 19 55914 0.1628 0.3030 -0.34071 2011 12 20 55915 0.1621 0.3022 -0.34207 2011 12 21 55916 0.1615 0.3014 -0.34333 2011 12 22 55917 0.1608 0.3006 -0.34441 2011 12 23 55918 0.1601 0.2998 -0.34533 2011 12 24 55919 0.1595 0.2990 -0.34615 2011 12 25 55920 0.1588 0.2982 -0.34694 2011 12 26 55921 0.1581 0.2975 -0.34771 2011 12 27 55922 0.1574 0.2968 -0.34856 2011 12 28 55923 0.1567 0.2960 -0.34947 2011 12 29 55924 0.1560 0.2953 -0.35041 2011 12 30 55925 0.1552 0.2946 -0.35135 2011 12 31 55926 0.1545 0.2939 -0.35224 2012 1 1 55927 0.1538 0.2933 -0.35307 2012 1 2 55928 0.1531 0.2926 -0.35383 2012 1 3 55929 0.1523 0.2919 -0.35455 2012 1 4 55930 0.1516 0.2913 -0.35524 2012 1 5 55931 0.1508 0.2907 -0.35588 2012 1 6 55932 0.1501 0.2901 -0.35645 2012 1 7 55933 0.1493 0.2895 -0.35701 2012 1 8 55934 0.1486 0.2889 -0.35762 2012 1 9 55935 0.1478 0.2883 -0.35829 2012 1 10 55936 0.1470 0.2878 -0.35905 2012 1 11 55937 0.1463 0.2872 -0.35993 2012 1 12 55938 0.1455 0.2867 -0.36089 2012 1 13 55939 0.1447 0.2862 -0.36197 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) 55548 -67.60 0.11 -6.58 0.14 55549 -67.64 0.74 -6.44 0.10 55550 -67.67 0.74 -6.35 0.10 55551 -67.57 0.25 -6.42 0.34 55552 -67.30 0.25 -6.62 0.34 55553 -66.92 0.25 -6.76 0.34 55554 -66.63 0.25 -6.77 0.34 55555 -66.59 0.39 -6.67 0.15 55556 -66.78 0.28 -6.55 0.17 55557 -67.05 0.17 -6.46 0.18 55558 -67.23 0.17 -6.39 0.18 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55548 0.219 0.044 -0.220 0.140 55549 0.221 0.294 -0.245 0.100 55550 0.224 0.294 -0.268 0.100 55551 0.236 0.099 -0.285 0.340 55552 0.240 0.099 -0.302 0.340 55553 0.236 0.099 -0.292 0.340 55554 0.227 0.099 -0.301 0.340 55555 0.218 0.155 -0.318 0.150 55556 0.212 0.111 -0.319 0.170 55557 0.201 0.068 -0.297 0.180 55558 0.189 0.068 -0.283 0.180 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.