********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 27 January 2011 Vol. XXIV No. 004 ______________________________________________________________________ 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 21 55582 0.07134 .00010 0.19471 .00009 -0.148783 0.000019 11 1 22 55583 0.06796 .00010 0.19456 .00010 -0.149708 0.000020 11 1 23 55584 0.06481 .00009 0.19461 .00009 -0.150820 0.000019 11 1 24 55585 0.06170 .00009 0.19495 .00009 -0.151989 0.000018 11 1 25 55586 0.05857 .00009 0.19555 .00009 -0.153074 0.000018 11 1 26 55587 0.05543 .00009 0.19632 .00009 -0.153989 0.000065 11 1 27 55588 0.05239 .00009 0.19729 .00009 -0.154675 0.000055 _______________________________________________________________________ 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 = 0.0705 - 0.0364 cos A - 0.1125 sin A + 0.0141 cos C - 0.0358 sin C y = 0.3342 - 0.0999 cos A + 0.0353 sin A - 0.0358 cos C - 0.0141 sin C UT1-UTC = -0.1498 - 0.00070 (MJD - 55596) - (UT2-UT1) where A = 2*pi*(MJD-55588)/365.25 and C = 2*pi*(MJD-55588)/435. TAI-UTC(MJD 55589) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55588)**0.80 S t = 0.00025 (MJD-55588)**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 28 55589 0.0495 0.1979 -0.15510 2011 1 29 55590 0.0468 0.1987 -0.15537 2011 1 30 55591 0.0442 0.1994 -0.15558 2011 1 31 55592 0.0417 0.2002 -0.15578 2011 2 1 55593 0.0394 0.2009 -0.15603 2011 2 2 55594 0.0372 0.2017 -0.15639 2011 2 3 55595 0.0350 0.2025 -0.15686 2011 2 4 55596 0.0329 0.2034 -0.15744 2011 2 5 55597 0.0308 0.2043 -0.15811 2011 2 6 55598 0.0287 0.2052 -0.15885 2011 2 7 55599 0.0267 0.2062 -0.15961 2011 2 8 55600 0.0247 0.2072 -0.16034 2011 2 9 55601 0.0227 0.2082 -0.16100 2011 2 10 55602 0.0209 0.2093 -0.16157 2011 2 11 55603 0.0190 0.2103 -0.16202 2011 2 12 55604 0.0172 0.2114 -0.16236 2011 2 13 55605 0.0154 0.2126 -0.16266 2011 2 14 55606 0.0137 0.2138 -0.16301 2011 2 15 55607 0.0120 0.2150 -0.16348 2011 2 16 55608 0.0103 0.2162 -0.16415 2011 2 17 55609 0.0086 0.2175 -0.16507 2011 2 18 55610 0.0070 0.2187 -0.16626 2011 2 19 55611 0.0054 0.2201 -0.16765 2011 2 20 55612 0.0038 0.2214 -0.16914 2011 2 21 55613 0.0023 0.2228 -0.17057 2011 2 22 55614 0.0007 0.2241 -0.17183 2011 2 23 55615 -0.0007 0.2256 -0.17284 2011 2 24 55616 -0.0022 0.2270 -0.17361 2011 2 25 55617 -0.0036 0.2284 -0.17419 2011 2 26 55618 -0.0050 0.2299 -0.17465 2011 2 27 55619 -0.0064 0.2314 -0.17510 2011 2 28 55620 -0.0077 0.2330 -0.17560 2011 3 1 55621 -0.0091 0.2345 -0.17619 2011 3 2 55622 -0.0103 0.2361 -0.17690 2011 3 3 55623 -0.0116 0.2377 -0.17774 2011 3 4 55624 -0.0128 0.2393 -0.17867 2011 3 5 55625 -0.0140 0.2409 -0.17968 2011 3 6 55626 -0.0152 0.2425 -0.18072 2011 3 7 55627 -0.0163 0.2442 -0.18172 2011 3 8 55628 -0.0174 0.2459 -0.18266 2011 3 9 55629 -0.0185 0.2476 -0.18350 2011 3 10 55630 -0.0195 0.2493 -0.18425 2011 3 11 55631 -0.0206 0.2510 -0.18490 2011 3 12 55632 -0.0215 0.2527 -0.18549 2011 3 13 55633 -0.0225 0.2545 -0.18607 2011 3 14 55634 -0.0234 0.2563 -0.18671 2011 3 15 55635 -0.0243 0.2581 -0.18750 2011 3 16 55636 -0.0252 0.2599 -0.18854 2011 3 17 55637 -0.0260 0.2617 -0.18985 2011 3 18 55638 -0.0268 0.2635 -0.19142 2011 3 19 55639 -0.0275 0.2653 -0.19317 2011 3 20 55640 -0.0283 0.2672 -0.19495 2011 3 21 55641 -0.0290 0.2691 -0.19663 2011 3 22 55642 -0.0296 0.2709 -0.19809 2011 3 23 55643 -0.0303 0.2728 -0.19929 2011 3 24 55644 -0.0309 0.2747 -0.20026 2011 3 25 55645 -0.0314 0.2766 -0.20108 2011 3 26 55646 -0.0320 0.2785 -0.20185 2011 3 27 55647 -0.0325 0.2804 -0.20264 2011 3 28 55648 -0.0329 0.2823 -0.20350 2011 3 29 55649 -0.0334 0.2843 -0.20447 2011 3 30 55650 -0.0338 0.2862 -0.20556 2011 3 31 55651 -0.0342 0.2882 -0.20674 2011 4 1 55652 -0.0345 0.2901 -0.20798 2011 4 2 55653 -0.0348 0.2921 -0.20925 2011 4 3 55654 -0.0351 0.2940 -0.21049 2011 4 4 55655 -0.0353 0.2960 -0.21167 2011 4 5 55656 -0.0355 0.2979 -0.21276 2011 4 6 55657 -0.0357 0.2999 -0.21373 2011 4 7 55658 -0.0358 0.3019 -0.21459 2011 4 8 55659 -0.0360 0.3039 -0.21536 2011 4 9 55660 -0.0360 0.3058 -0.21608 2011 4 10 55661 -0.0361 0.3078 -0.21682 2011 4 11 55662 -0.0361 0.3098 -0.21764 2011 4 12 55663 -0.0361 0.3118 -0.21862 2011 4 13 55664 -0.0360 0.3137 -0.21982 2011 4 14 55665 -0.0359 0.3157 -0.22125 2011 4 15 55666 -0.0358 0.3177 -0.22288 2011 4 16 55667 -0.0357 0.3196 -0.22459 2011 4 17 55668 -0.0355 0.3216 -0.22627 2011 4 18 55669 -0.0353 0.3236 -0.22778 2011 4 19 55670 -0.0350 0.3255 -0.22903 2011 4 20 55671 -0.0347 0.3275 -0.23003 2011 4 21 55672 -0.0344 0.3294 -0.23082 2011 4 22 55673 -0.0341 0.3314 -0.23151 2011 4 23 55674 -0.0337 0.3333 -0.23218 2011 4 24 55675 -0.0333 0.3353 -0.23291 2011 4 25 55676 -0.0329 0.3372 -0.23373 2011 4 26 55677 -0.0324 0.3391 -0.23463 2011 4 27 55678 -0.0319 0.3410 -0.23561 2011 4 28 55679 -0.0314 0.3429 -0.23664 2011 4 29 55680 -0.0309 0.3448 -0.23768 2011 4 30 55681 -0.0303 0.3467 -0.23868 2011 5 1 55682 -0.0297 0.3486 -0.23961 2011 5 2 55683 -0.0290 0.3505 -0.24044 2011 5 3 55684 -0.0284 0.3524 -0.24114 2011 5 4 55685 -0.0277 0.3542 -0.24172 2011 5 5 55686 -0.0269 0.3560 -0.24219 2011 5 6 55687 -0.0262 0.3579 -0.24260 2011 5 7 55688 -0.0254 0.3597 -0.24301 2011 5 8 55689 -0.0246 0.3615 -0.24347 2011 5 9 55690 -0.0237 0.3633 -0.24406 2011 5 10 55691 -0.0229 0.3651 -0.24483 2011 5 11 55692 -0.0220 0.3668 -0.24579 2011 5 12 55693 -0.0211 0.3686 -0.24693 2011 5 13 55694 -0.0201 0.3703 -0.24819 2011 5 14 55695 -0.0192 0.3720 -0.24945 2011 5 15 55696 -0.0182 0.3737 -0.25060 2011 5 16 55697 -0.0171 0.3754 -0.25152 2011 5 17 55698 -0.0161 0.3771 -0.25219 2011 5 18 55699 -0.0150 0.3788 -0.25264 2011 5 19 55700 -0.0139 0.3804 -0.25294 2011 5 20 55701 -0.0128 0.3820 -0.25319 2011 5 21 55702 -0.0117 0.3836 -0.25346 2011 5 22 55703 -0.0105 0.3852 -0.25381 2011 5 23 55704 -0.0093 0.3868 -0.25424 2011 5 24 55705 -0.0081 0.3883 -0.25475 2011 5 25 55706 -0.0069 0.3899 -0.25530 2011 5 26 55707 -0.0056 0.3914 -0.25585 2011 5 27 55708 -0.0043 0.3929 -0.25637 2011 5 28 55709 -0.0030 0.3944 -0.25682 2011 5 29 55710 -0.0017 0.3958 -0.25715 2011 5 30 55711 -0.0004 0.3973 -0.25736 2011 5 31 55712 0.0010 0.3987 -0.25743 2011 6 1 55713 0.0023 0.4001 -0.25738 2011 6 2 55714 0.0037 0.4014 -0.25726 2011 6 3 55715 0.0051 0.4028 -0.25711 2011 6 4 55716 0.0066 0.4041 -0.25700 2011 6 5 55717 0.0080 0.4054 -0.25700 2011 6 6 55718 0.0095 0.4067 -0.25717 2011 6 7 55719 0.0110 0.4080 -0.25751 2011 6 8 55720 0.0125 0.4092 -0.25802 2011 6 9 55721 0.0140 0.4105 -0.25864 2011 6 10 55722 0.0155 0.4116 -0.25927 2011 6 11 55723 0.0171 0.4128 -0.25982 2011 6 12 55724 0.0186 0.4140 -0.26020 2011 6 13 55725 0.0202 0.4151 -0.26036 2011 6 14 55726 0.0218 0.4162 -0.26031 2011 6 15 55727 0.0234 0.4173 -0.26010 2011 6 16 55728 0.0250 0.4183 -0.25981 2011 6 17 55729 0.0266 0.4193 -0.25952 2011 6 18 55730 0.0283 0.4203 -0.25931 2011 6 19 55731 0.0299 0.4213 -0.25920 2011 6 20 55732 0.0316 0.4223 -0.25918 2011 6 21 55733 0.0332 0.4232 -0.25923 2011 6 22 55734 0.0349 0.4241 -0.25930 2011 6 23 55735 0.0366 0.4250 -0.25935 2011 6 24 55736 0.0383 0.4258 -0.25933 2011 6 25 55737 0.0400 0.4266 -0.25922 2011 6 26 55738 0.0417 0.4274 -0.25900 2011 6 27 55739 0.0435 0.4282 -0.25864 2011 6 28 55740 0.0452 0.4290 -0.25817 2011 6 29 55741 0.0469 0.4297 -0.25761 2011 6 30 55742 0.0487 0.4304 -0.25703 2011 7 1 55743 0.0504 0.4310 -0.25648 2011 7 2 55744 0.0522 0.4317 -0.25605 2011 7 3 55745 0.0539 0.4323 -0.25578 2011 7 4 55746 0.0557 0.4329 -0.25572 2011 7 5 55747 0.0575 0.4334 -0.25585 2011 7 6 55748 0.0592 0.4340 -0.25611 2011 7 7 55749 0.0610 0.4345 -0.25641 2011 7 8 55750 0.0628 0.4350 -0.25663 2011 7 9 55751 0.0646 0.4354 -0.25671 2011 7 10 55752 0.0664 0.4358 -0.25658 2011 7 11 55753 0.0681 0.4362 -0.25626 2011 7 12 55754 0.0699 0.4366 -0.25578 2011 7 13 55755 0.0717 0.4369 -0.25521 2011 7 14 55756 0.0735 0.4373 -0.25465 2011 7 15 55757 0.0753 0.4376 -0.25415 2011 7 16 55758 0.0771 0.4378 -0.25377 2011 7 17 55759 0.0788 0.4381 -0.25350 2011 7 18 55760 0.0806 0.4383 -0.25334 2011 7 19 55761 0.0824 0.4384 -0.25322 2011 7 20 55762 0.0842 0.4386 -0.25312 2011 7 21 55763 0.0859 0.4387 -0.25297 2011 7 22 55764 0.0877 0.4388 -0.25275 2011 7 23 55765 0.0895 0.4389 -0.25242 2011 7 24 55766 0.0912 0.4390 -0.25197 2011 7 25 55767 0.0930 0.4390 -0.25141 2011 7 26 55768 0.0947 0.4390 -0.25075 2011 7 27 55769 0.0965 0.4390 -0.25005 2011 7 28 55770 0.0982 0.4389 -0.24935 2011 7 29 55771 0.0999 0.4388 -0.24875 2011 7 30 55772 0.1017 0.4387 -0.24829 2011 7 31 55773 0.1034 0.4386 -0.24804 2011 8 1 55774 0.1051 0.4384 -0.24800 2011 8 2 55775 0.1068 0.4382 -0.24812 2011 8 3 55776 0.1085 0.4380 -0.24830 2011 8 4 55777 0.1101 0.4378 -0.24843 2011 8 5 55778 0.1118 0.4375 -0.24841 2011 8 6 55779 0.1135 0.4373 -0.24821 2011 8 7 55780 0.1151 0.4370 -0.24782 2011 8 8 55781 0.1168 0.4366 -0.24731 2011 8 9 55782 0.1184 0.4363 -0.24675 2011 8 10 55783 0.1200 0.4359 -0.24623 2011 8 11 55784 0.1216 0.4355 -0.24581 2011 8 12 55785 0.1232 0.4351 -0.24553 2011 8 13 55786 0.1248 0.4346 -0.24539 2011 8 14 55787 0.1264 0.4341 -0.24536 2011 8 15 55788 0.1279 0.4336 -0.24542 2011 8 16 55789 0.1295 0.4331 -0.24550 2011 8 17 55790 0.1310 0.4326 -0.24556 2011 8 18 55791 0.1325 0.4320 -0.24554 2011 8 19 55792 0.1340 0.4314 -0.24543 2011 8 20 55793 0.1355 0.4308 -0.24520 2011 8 21 55794 0.1370 0.4302 -0.24488 2011 8 22 55795 0.1384 0.4295 -0.24448 2011 8 23 55796 0.1398 0.4288 -0.24405 2011 8 24 55797 0.1413 0.4281 -0.24365 2011 8 25 55798 0.1427 0.4274 -0.24333 2011 8 26 55799 0.1441 0.4267 -0.24317 2011 8 27 55800 0.1454 0.4259 -0.24320 2011 8 28 55801 0.1468 0.4252 -0.24347 2011 8 29 55802 0.1481 0.4244 -0.24395 2011 8 30 55803 0.1494 0.4235 -0.24458 2011 8 31 55804 0.1507 0.4227 -0.24526 2011 9 1 55805 0.1520 0.4219 -0.24587 2011 9 2 55806 0.1533 0.4210 -0.24629 2011 9 3 55807 0.1545 0.4201 -0.24647 2011 9 4 55808 0.1558 0.4192 -0.24645 2011 9 5 55809 0.1570 0.4183 -0.24632 2011 9 6 55810 0.1582 0.4173 -0.24620 2011 9 7 55811 0.1593 0.4164 -0.24615 2011 9 8 55812 0.1605 0.4154 -0.24623 2011 9 9 55813 0.1616 0.4144 -0.24642 2011 9 10 55814 0.1627 0.4134 -0.24672 2011 9 11 55815 0.1638 0.4124 -0.24715 2011 9 12 55816 0.1649 0.4113 -0.24763 2011 9 13 55817 0.1659 0.4103 -0.24808 2011 9 14 55818 0.1669 0.4092 -0.24848 2011 9 15 55819 0.1680 0.4081 -0.24879 2011 9 16 55820 0.1689 0.4070 -0.24900 2011 9 17 55821 0.1699 0.4059 -0.24910 2011 9 18 55822 0.1708 0.4048 -0.24912 2011 9 19 55823 0.1718 0.4037 -0.24907 2011 9 20 55824 0.1727 0.4025 -0.24903 2011 9 21 55825 0.1735 0.4013 -0.24904 2011 9 22 55826 0.1744 0.4002 -0.24922 2011 9 23 55827 0.1752 0.3990 -0.24968 2011 9 24 55828 0.1760 0.3978 -0.25038 2011 9 25 55829 0.1768 0.3966 -0.25134 2011 9 26 55830 0.1776 0.3954 -0.25256 2011 9 27 55831 0.1783 0.3941 -0.25397 2011 9 28 55832 0.1790 0.3929 -0.25543 2011 9 29 55833 0.1797 0.3917 -0.25678 2011 9 30 55834 0.1804 0.3904 -0.25792 2011 10 1 55835 0.1811 0.3891 -0.25884 2011 10 2 55836 0.1817 0.3879 -0.25956 2011 10 3 55837 0.1823 0.3866 -0.26019 2011 10 4 55838 0.1829 0.3853 -0.26079 2011 10 5 55839 0.1835 0.3840 -0.26151 2011 10 6 55840 0.1840 0.3827 -0.26237 2011 10 7 55841 0.1845 0.3814 -0.26338 2011 10 8 55842 0.1850 0.3801 -0.26453 2011 10 9 55843 0.1855 0.3787 -0.26578 2011 10 10 55844 0.1859 0.3774 -0.26705 2011 10 11 55845 0.1863 0.3761 -0.26828 2011 10 12 55846 0.1867 0.3747 -0.26944 2011 10 13 55847 0.1871 0.3734 -0.27057 2011 10 14 55848 0.1875 0.3721 -0.27170 2011 10 15 55849 0.1878 0.3707 -0.27278 2011 10 16 55850 0.1881 0.3694 -0.27370 2011 10 17 55851 0.1884 0.3680 -0.27456 2011 10 18 55852 0.1887 0.3666 -0.27548 2011 10 19 55853 0.1889 0.3653 -0.27652 2011 10 20 55854 0.1891 0.3639 -0.27774 2011 10 21 55855 0.1893 0.3626 -0.27912 2011 10 22 55856 0.1895 0.3612 -0.28068 2011 10 23 55857 0.1896 0.3598 -0.28245 2011 10 24 55858 0.1898 0.3585 -0.28434 2011 10 25 55859 0.1899 0.3571 -0.28620 2011 10 26 55860 0.1900 0.3557 -0.28798 2011 10 27 55861 0.1900 0.3544 -0.28953 2011 10 28 55862 0.1901 0.3530 -0.29083 2011 10 29 55863 0.1901 0.3516 -0.29197 2011 10 30 55864 0.1901 0.3503 -0.29299 2011 10 31 55865 0.1901 0.3489 -0.29396 2011 11 1 55866 0.1900 0.3476 -0.29491 2011 11 2 55867 0.1900 0.3462 -0.29585 2011 11 3 55868 0.1899 0.3448 -0.29676 2011 11 4 55869 0.1898 0.3435 -0.29763 2011 11 5 55870 0.1896 0.3421 -0.29850 2011 11 6 55871 0.1895 0.3408 -0.29938 2011 11 7 55872 0.1893 0.3395 -0.30027 2011 11 8 55873 0.1891 0.3381 -0.30115 2011 11 9 55874 0.1889 0.3368 -0.30203 2011 11 10 55875 0.1887 0.3355 -0.30286 2011 11 11 55876 0.1884 0.3342 -0.30366 2011 11 12 55877 0.1882 0.3328 -0.30443 2011 11 13 55878 0.1879 0.3315 -0.30520 2011 11 14 55879 0.1876 0.3302 -0.30598 2011 11 15 55880 0.1873 0.3289 -0.30676 2011 11 16 55881 0.1869 0.3277 -0.30758 2011 11 17 55882 0.1866 0.3264 -0.30856 2011 11 18 55883 0.1862 0.3251 -0.30973 2011 11 19 55884 0.1858 0.3238 -0.31113 2011 11 20 55885 0.1854 0.3226 -0.31268 2011 11 21 55886 0.1849 0.3213 -0.31430 2011 11 22 55887 0.1845 0.3201 -0.31591 2011 11 23 55888 0.1840 0.3189 -0.31741 2011 11 24 55889 0.1835 0.3176 -0.31873 2011 11 25 55890 0.1830 0.3164 -0.31984 2011 11 26 55891 0.1825 0.3152 -0.32080 2011 11 27 55892 0.1820 0.3140 -0.32167 2011 11 28 55893 0.1814 0.3128 -0.32251 2011 11 29 55894 0.1809 0.3117 -0.32336 2011 11 30 55895 0.1803 0.3105 -0.32430 2011 12 1 55896 0.1797 0.3093 -0.32528 2011 12 2 55897 0.1791 0.3082 -0.32631 2011 12 3 55898 0.1785 0.3071 -0.32737 2011 12 4 55899 0.1778 0.3059 -0.32836 2011 12 5 55900 0.1772 0.3048 -0.32926 2011 12 6 55901 0.1765 0.3037 -0.33004 2011 12 7 55902 0.1758 0.3026 -0.33064 2011 12 8 55903 0.1752 0.3016 -0.33107 2011 12 9 55904 0.1745 0.3005 -0.33139 2011 12 10 55905 0.1737 0.2995 -0.33168 2011 12 11 55906 0.1730 0.2984 -0.33201 2011 12 12 55907 0.1723 0.2974 -0.33246 2011 12 13 55908 0.1715 0.2964 -0.33296 2011 12 14 55909 0.1708 0.2954 -0.33349 2011 12 15 55910 0.1700 0.2944 -0.33409 2011 12 16 55911 0.1692 0.2934 -0.33483 2011 12 17 55912 0.1684 0.2925 -0.33564 2011 12 18 55913 0.1676 0.2915 -0.33644 2011 12 19 55914 0.1668 0.2906 -0.33721 2011 12 20 55915 0.1660 0.2897 -0.33792 2011 12 21 55916 0.1651 0.2888 -0.33851 2011 12 22 55917 0.1643 0.2879 -0.33898 2011 12 23 55918 0.1634 0.2870 -0.33932 2011 12 24 55919 0.1626 0.2862 -0.33961 2011 12 25 55920 0.1617 0.2853 -0.33992 2011 12 26 55921 0.1608 0.2845 -0.34023 2011 12 27 55922 0.1599 0.2837 -0.34061 2011 12 28 55923 0.1590 0.2829 -0.34107 2011 12 29 55924 0.1581 0.2821 -0.34168 2011 12 30 55925 0.1572 0.2813 -0.34246 2011 12 31 55926 0.1563 0.2806 -0.34326 2012 1 1 55927 0.1554 0.2798 -0.34406 2012 1 2 55928 0.1545 0.2791 -0.34486 2012 1 3 55929 0.1536 0.2784 -0.34547 2012 1 4 55930 0.1526 0.2777 -0.34592 2012 1 5 55931 0.1517 0.2770 -0.34632 2012 1 6 55932 0.1508 0.2763 -0.34666 2012 1 7 55933 0.1498 0.2757 -0.34701 2012 1 8 55934 0.1489 0.2751 -0.34740 2012 1 9 55935 0.1479 0.2744 -0.34787 2012 1 10 55936 0.1470 0.2738 -0.34853 2012 1 11 55937 0.1460 0.2733 -0.34939 2012 1 12 55938 0.1450 0.2727 -0.35042 2012 1 13 55939 0.1441 0.2721 -0.35158 2012 1 14 55940 0.1431 0.2716 -0.35288 2012 1 15 55941 0.1421 0.2711 -0.35418 2012 1 16 55942 0.1412 0.2706 -0.35541 2012 1 17 55943 0.1402 0.2701 -0.35656 2012 1 18 55944 0.1392 0.2696 -0.35759 2012 1 19 55945 0.1383 0.2692 -0.35847 2012 1 20 55946 0.1373 0.2687 -0.35926 2012 1 21 55947 0.1363 0.2683 -0.36001 2012 1 22 55948 0.1354 0.2679 -0.36080 2012 1 23 55949 0.1344 0.2675 -0.36162 2012 1 24 55950 0.1334 0.2671 -0.36253 2012 1 25 55951 0.1324 0.2667 -0.36350 2012 1 26 55952 0.1315 0.2664 -0.36450 2012 1 27 55953 0.1305 0.2660 -0.36548 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) 55561 -67.59 0.20 -6.12 0.34 55562 -67.69 0.20 -6.21 0.11 55563 -67.63 0.74 -6.39 0.34 55564 -67.37 0.74 -6.52 0.34 55565 -66.99 0.74 -6.46 0.34 55566 -66.68 0.10 -6.23 0.34 55567 -66.50 0.10 -5.97 0.34 55568 -66.42 0.10 -5.85 0.34 55569 -66.42 0.23 -5.92 0.34 55570 -66.56 0.12 -6.08 0.34 55571 -66.82 0.12 -6.21 0.34 55572 -67.08 0.74 -6.22 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55561 0.152 0.080 -0.249 0.340 55562 0.168 0.080 -0.249 0.110 55563 0.174 0.294 -0.263 0.340 55564 0.168 0.294 -0.284 0.340 55565 0.175 0.294 -0.286 0.340 55566 0.186 0.040 -0.280 0.340 55567 0.196 0.040 -0.270 0.340 55568 0.198 0.040 -0.261 0.340 55569 0.197 0.091 -0.250 0.340 55570 0.189 0.048 -0.237 0.340 55571 0.171 0.048 -0.251 0.340 55572 0.145 0.294 -0.247 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.