********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 24 February 2011 Vol. XXIV No. 008 ______________________________________________________________________ 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 2 18 55610 0.02180 .00010 0.21782 .00009 -0.167657 0.000013 11 2 19 55611 0.02013 .00010 0.21898 .00009 -0.169140 0.000012 11 2 20 55612 0.01853 .00010 0.21998 .00010 -0.170763 0.000011 11 2 21 55613 0.01685 .00009 0.22072 .00010 -0.172390 0.000013 11 2 22 55614 0.01524 .00010 0.22128 .00009 -0.173829 0.000012 11 2 23 55615 0.01380 .00010 0.22199 .00009 -0.175006 0.000011 11 2 24 55616 0.01224 .00010 0.22291 .00009 -0.175850 0.000013 _______________________________________________________________________ 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 = 0.0912 - 0.0817 cos A - 0.0799 sin A - 0.0030 cos C - 0.0420 sin C y = 0.3384 - 0.0702 cos A + 0.0739 sin A - 0.0420 cos C + 0.0030 sin C UT1-UTC = -0.1668 - 0.00067 (MJD - 55624) - (UT2-UT1) where A = 2*pi*(MJD-55616)/365.25 and C = 2*pi*(MJD-55616)/435. TAI-UTC(MJD 55617) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55616)**0.80 S t = 0.00025 (MJD-55616)**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 2 25 55617 0.0108 0.2240 -0.17638 2011 2 26 55618 0.0092 0.2250 -0.17674 2011 2 27 55619 0.0077 0.2262 -0.17704 2011 2 28 55620 0.0061 0.2273 -0.17737 2011 3 1 55621 0.0047 0.2285 -0.17782 2011 3 2 55622 0.0033 0.2297 -0.17841 2011 3 3 55623 0.0019 0.2310 -0.17915 2011 3 4 55624 0.0006 0.2323 -0.18001 2011 3 5 55625 -0.0008 0.2336 -0.18092 2011 3 6 55626 -0.0020 0.2350 -0.18182 2011 3 7 55627 -0.0033 0.2364 -0.18268 2011 3 8 55628 -0.0046 0.2378 -0.18348 2011 3 9 55629 -0.0058 0.2392 -0.18426 2011 3 10 55630 -0.0069 0.2406 -0.18501 2011 3 11 55631 -0.0081 0.2421 -0.18569 2011 3 12 55632 -0.0092 0.2436 -0.18633 2011 3 13 55633 -0.0103 0.2451 -0.18695 2011 3 14 55634 -0.0114 0.2466 -0.18763 2011 3 15 55635 -0.0124 0.2482 -0.18845 2011 3 16 55636 -0.0134 0.2497 -0.18950 2011 3 17 55637 -0.0144 0.2513 -0.19080 2011 3 18 55638 -0.0153 0.2529 -0.19236 2011 3 19 55639 -0.0163 0.2545 -0.19410 2011 3 20 55640 -0.0171 0.2561 -0.19589 2011 3 21 55641 -0.0180 0.2578 -0.19757 2011 3 22 55642 -0.0188 0.2594 -0.19903 2011 3 23 55643 -0.0196 0.2611 -0.20023 2011 3 24 55644 -0.0204 0.2628 -0.20119 2011 3 25 55645 -0.0211 0.2644 -0.20199 2011 3 26 55646 -0.0219 0.2661 -0.20273 2011 3 27 55647 -0.0225 0.2679 -0.20349 2011 3 28 55648 -0.0232 0.2696 -0.20434 2011 3 29 55649 -0.0238 0.2713 -0.20529 2011 3 30 55650 -0.0244 0.2730 -0.20635 2011 3 31 55651 -0.0249 0.2748 -0.20750 2011 4 1 55652 -0.0255 0.2765 -0.20870 2011 4 2 55653 -0.0260 0.2783 -0.20991 2011 4 3 55654 -0.0264 0.2801 -0.21109 2011 4 4 55655 -0.0269 0.2818 -0.21220 2011 4 5 55656 -0.0273 0.2836 -0.21320 2011 4 6 55657 -0.0276 0.2854 -0.21409 2011 4 7 55658 -0.0280 0.2872 -0.21487 2011 4 8 55659 -0.0283 0.2890 -0.21556 2011 4 9 55660 -0.0286 0.2908 -0.21620 2011 4 10 55661 -0.0288 0.2926 -0.21685 2011 4 11 55662 -0.0290 0.2944 -0.21760 2011 4 12 55663 -0.0292 0.2962 -0.21851 2011 4 13 55664 -0.0294 0.2980 -0.21964 2011 4 14 55665 -0.0295 0.2998 -0.22102 2011 4 15 55666 -0.0296 0.3016 -0.22259 2011 4 16 55667 -0.0296 0.3034 -0.22427 2011 4 17 55668 -0.0297 0.3053 -0.22592 2011 4 18 55669 -0.0297 0.3071 -0.22740 2011 4 19 55670 -0.0296 0.3089 -0.22864 2011 4 20 55671 -0.0296 0.3107 -0.22962 2011 4 21 55672 -0.0295 0.3125 -0.23041 2011 4 22 55673 -0.0294 0.3143 -0.23110 2011 4 23 55674 -0.0292 0.3161 -0.23177 2011 4 24 55675 -0.0291 0.3179 -0.23250 2011 4 25 55676 -0.0289 0.3197 -0.23331 2011 4 26 55677 -0.0286 0.3215 -0.23422 2011 4 27 55678 -0.0284 0.3233 -0.23520 2011 4 28 55679 -0.0281 0.3251 -0.23624 2011 4 29 55680 -0.0277 0.3269 -0.23729 2011 4 30 55681 -0.0274 0.3287 -0.23830 2011 5 1 55682 -0.0270 0.3304 -0.23924 2011 5 2 55683 -0.0266 0.3322 -0.24008 2011 5 3 55684 -0.0262 0.3339 -0.24080 2011 5 4 55685 -0.0257 0.3357 -0.24140 2011 5 5 55686 -0.0252 0.3374 -0.24190 2011 5 6 55687 -0.0247 0.3392 -0.24233 2011 5 7 55688 -0.0241 0.3409 -0.24276 2011 5 8 55689 -0.0236 0.3426 -0.24324 2011 5 9 55690 -0.0230 0.3443 -0.24386 2011 5 10 55691 -0.0223 0.3460 -0.24465 2011 5 11 55692 -0.0217 0.3477 -0.24565 2011 5 12 55693 -0.0210 0.3494 -0.24683 2011 5 13 55694 -0.0203 0.3510 -0.24813 2011 5 14 55695 -0.0196 0.3527 -0.24945 2011 5 15 55696 -0.0188 0.3543 -0.25066 2011 5 16 55697 -0.0181 0.3560 -0.25168 2011 5 17 55698 -0.0173 0.3576 -0.25245 2011 5 18 55699 -0.0164 0.3592 -0.25301 2011 5 19 55700 -0.0156 0.3608 -0.25342 2011 5 20 55701 -0.0147 0.3624 -0.25378 2011 5 21 55702 -0.0138 0.3639 -0.25415 2011 5 22 55703 -0.0129 0.3655 -0.25460 2011 5 23 55704 -0.0119 0.3670 -0.25513 2011 5 24 55705 -0.0110 0.3685 -0.25572 2011 5 25 55706 -0.0100 0.3700 -0.25635 2011 5 26 55707 -0.0090 0.3715 -0.25698 2011 5 27 55708 -0.0080 0.3730 -0.25757 2011 5 28 55709 -0.0069 0.3744 -0.25808 2011 5 29 55710 -0.0058 0.3759 -0.25848 2011 5 30 55711 -0.0048 0.3773 -0.25874 2011 5 31 55712 -0.0036 0.3787 -0.25887 2011 6 1 55713 -0.0025 0.3801 -0.25888 2011 6 2 55714 -0.0014 0.3815 -0.25882 2011 6 3 55715 -0.0002 0.3828 -0.25872 2011 6 4 55716 0.0010 0.3841 -0.25868 2011 6 5 55717 0.0022 0.3855 -0.25874 2011 6 6 55718 0.0034 0.3868 -0.25898 2011 6 7 55719 0.0046 0.3880 -0.25939 2011 6 8 55720 0.0059 0.3893 -0.25998 2011 6 9 55721 0.0072 0.3905 -0.26067 2011 6 10 55722 0.0085 0.3917 -0.26138 2011 6 11 55723 0.0098 0.3929 -0.26201 2011 6 12 55724 0.0111 0.3941 -0.26247 2011 6 13 55725 0.0124 0.3953 -0.26269 2011 6 14 55726 0.0138 0.3964 -0.26270 2011 6 15 55727 0.0151 0.3975 -0.26255 2011 6 16 55728 0.0165 0.3986 -0.26232 2011 6 17 55729 0.0179 0.3997 -0.26210 2011 6 18 55730 0.0193 0.4007 -0.26196 2011 6 19 55731 0.0207 0.4018 -0.26192 2011 6 20 55732 0.0221 0.4028 -0.26197 2011 6 21 55733 0.0236 0.4038 -0.26208 2011 6 22 55734 0.0250 0.4047 -0.26222 2011 6 23 55735 0.0265 0.4057 -0.26234 2011 6 24 55736 0.0279 0.4066 -0.26239 2011 6 25 55737 0.0294 0.4075 -0.26235 2011 6 26 55738 0.0309 0.4083 -0.26219 2011 6 27 55739 0.0324 0.4092 -0.26189 2011 6 28 55740 0.0339 0.4100 -0.26148 2011 6 29 55741 0.0354 0.4108 -0.26099 2011 6 30 55742 0.0369 0.4116 -0.26046 2011 7 1 55743 0.0384 0.4124 -0.25997 2011 7 2 55744 0.0400 0.4131 -0.25958 2011 7 3 55745 0.0415 0.4138 -0.25937 2011 7 4 55746 0.0430 0.4145 -0.25936 2011 7 5 55747 0.0446 0.4151 -0.25954 2011 7 6 55748 0.0461 0.4158 -0.25984 2011 7 7 55749 0.0477 0.4164 -0.26018 2011 7 8 55750 0.0493 0.4170 -0.26045 2011 7 9 55751 0.0508 0.4175 -0.26056 2011 7 10 55752 0.0524 0.4181 -0.26047 2011 7 11 55753 0.0540 0.4186 -0.26019 2011 7 12 55754 0.0555 0.4191 -0.25974 2011 7 13 55755 0.0571 0.4196 -0.25921 2011 7 14 55756 0.0587 0.4200 -0.25868 2011 7 15 55757 0.0603 0.4204 -0.25821 2011 7 16 55758 0.0618 0.4208 -0.25786 2011 7 17 55759 0.0634 0.4212 -0.25763 2011 7 18 55760 0.0650 0.4216 -0.25749 2011 7 19 55761 0.0666 0.4219 -0.25741 2011 7 20 55762 0.0681 0.4222 -0.25733 2011 7 21 55763 0.0697 0.4225 -0.25722 2011 7 22 55764 0.0713 0.4227 -0.25704 2011 7 23 55765 0.0729 0.4229 -0.25675 2011 7 24 55766 0.0744 0.4231 -0.25636 2011 7 25 55767 0.0760 0.4233 -0.25585 2011 7 26 55768 0.0776 0.4235 -0.25527 2011 7 27 55769 0.0791 0.4236 -0.25464 2011 7 28 55770 0.0807 0.4237 -0.25405 2011 7 29 55771 0.0822 0.4238 -0.25356 2011 7 30 55772 0.0837 0.4239 -0.25324 2011 7 31 55773 0.0853 0.4239 -0.25316 2011 8 1 55774 0.0868 0.4239 -0.25330 2011 8 2 55775 0.0883 0.4239 -0.25363 2011 8 3 55776 0.0899 0.4239 -0.25404 2011 8 4 55777 0.0914 0.4238 -0.25442 2011 8 5 55778 0.0929 0.4238 -0.25466 2011 8 6 55779 0.0944 0.4237 -0.25469 2011 8 7 55780 0.0958 0.4235 -0.25452 2011 8 8 55781 0.0973 0.4234 -0.25419 2011 8 9 55782 0.0988 0.4232 -0.25377 2011 8 10 55783 0.1003 0.4231 -0.25334 2011 8 11 55784 0.1017 0.4228 -0.25297 2011 8 12 55785 0.1031 0.4226 -0.25272 2011 8 13 55786 0.1046 0.4224 -0.25260 2011 8 14 55787 0.1060 0.4221 -0.25260 2011 8 15 55788 0.1074 0.4218 -0.25270 2011 8 16 55789 0.1088 0.4215 -0.25284 2011 8 17 55790 0.1102 0.4211 -0.25298 2011 8 18 55791 0.1116 0.4208 -0.25307 2011 8 19 55792 0.1129 0.4204 -0.25308 2011 8 20 55793 0.1143 0.4200 -0.25300 2011 8 21 55794 0.1156 0.4196 -0.25282 2011 8 22 55795 0.1169 0.4191 -0.25256 2011 8 23 55796 0.1183 0.4187 -0.25226 2011 8 24 55797 0.1196 0.4182 -0.25198 2011 8 25 55798 0.1208 0.4177 -0.25178 2011 8 26 55799 0.1221 0.4172 -0.25174 2011 8 27 55800 0.1234 0.4167 -0.25193 2011 8 28 55801 0.1246 0.4161 -0.25238 2011 8 29 55802 0.1258 0.4155 -0.25306 2011 8 30 55803 0.1270 0.4150 -0.25390 2011 8 31 55804 0.1282 0.4143 -0.25477 2011 9 1 55805 0.1294 0.4137 -0.25554 2011 9 2 55806 0.1306 0.4131 -0.25611 2011 9 3 55807 0.1317 0.4124 -0.25643 2011 9 4 55808 0.1329 0.4118 -0.25655 2011 9 5 55809 0.1340 0.4111 -0.25652 2011 9 6 55810 0.1351 0.4104 -0.25643 2011 9 7 55811 0.1361 0.4096 -0.25638 2011 9 8 55812 0.1372 0.4089 -0.25642 2011 9 9 55813 0.1383 0.4081 -0.25659 2011 9 10 55814 0.1393 0.4074 -0.25691 2011 9 11 55815 0.1403 0.4066 -0.25736 2011 9 12 55816 0.1413 0.4058 -0.25792 2011 9 13 55817 0.1423 0.4050 -0.25852 2011 9 14 55818 0.1432 0.4041 -0.25913 2011 9 15 55819 0.1442 0.4033 -0.25969 2011 9 16 55820 0.1451 0.4025 -0.26018 2011 9 17 55821 0.1460 0.4016 -0.26058 2011 9 18 55822 0.1469 0.4007 -0.26091 2011 9 19 55823 0.1477 0.3998 -0.26119 2011 9 20 55824 0.1486 0.3989 -0.26147 2011 9 21 55825 0.1494 0.3980 -0.26182 2011 9 22 55826 0.1502 0.3971 -0.26230 2011 9 23 55827 0.1510 0.3961 -0.26299 2011 9 24 55828 0.1518 0.3952 -0.26394 2011 9 25 55829 0.1525 0.3942 -0.26514 2011 9 26 55830 0.1532 0.3933 -0.26655 2011 9 27 55831 0.1540 0.3923 -0.26808 2011 9 28 55832 0.1546 0.3913 -0.26959 2011 9 29 55833 0.1553 0.3903 -0.27094 2011 9 30 55834 0.1560 0.3893 -0.27206 2011 10 1 55835 0.1566 0.3883 -0.27293 2011 10 2 55836 0.1572 0.3872 -0.27361 2011 10 3 55837 0.1578 0.3862 -0.27416 2011 10 4 55838 0.1584 0.3852 -0.27468 2011 10 5 55839 0.1589 0.3841 -0.27525 2011 10 6 55840 0.1594 0.3831 -0.27594 2011 10 7 55841 0.1600 0.3820 -0.27677 2011 10 8 55842 0.1605 0.3809 -0.27771 2011 10 9 55843 0.1609 0.3799 -0.27874 2011 10 10 55844 0.1614 0.3788 -0.27978 2011 10 11 55845 0.1618 0.3777 -0.28075 2011 10 12 55846 0.1622 0.3766 -0.28160 2011 10 13 55847 0.1626 0.3755 -0.28235 2011 10 14 55848 0.1630 0.3744 -0.28305 2011 10 15 55849 0.1633 0.3733 -0.28363 2011 10 16 55850 0.1636 0.3722 -0.28423 2011 10 17 55851 0.1640 0.3711 -0.28488 2011 10 18 55852 0.1642 0.3700 -0.28557 2011 10 19 55853 0.1645 0.3688 -0.28635 2011 10 20 55854 0.1648 0.3677 -0.28718 2011 10 21 55855 0.1650 0.3666 -0.28815 2011 10 22 55856 0.1652 0.3655 -0.28926 2011 10 23 55857 0.1654 0.3643 -0.29058 2011 10 24 55858 0.1656 0.3632 -0.29208 2011 10 25 55859 0.1657 0.3621 -0.29363 2011 10 26 55860 0.1659 0.3610 -0.29515 2011 10 27 55861 0.1660 0.3598 -0.29651 2011 10 28 55862 0.1661 0.3587 -0.29763 2011 10 29 55863 0.1661 0.3576 -0.29853 2011 10 30 55864 0.1662 0.3564 -0.29929 2011 10 31 55865 0.1662 0.3553 -0.30005 2011 11 1 55866 0.1663 0.3542 -0.30088 2011 11 2 55867 0.1663 0.3531 -0.30184 2011 11 3 55868 0.1662 0.3519 -0.30291 2011 11 4 55869 0.1662 0.3508 -0.30406 2011 11 5 55870 0.1662 0.3497 -0.30521 2011 11 6 55871 0.1661 0.3486 -0.30642 2011 11 7 55872 0.1660 0.3474 -0.30756 2011 11 8 55873 0.1659 0.3463 -0.30860 2011 11 9 55874 0.1658 0.3452 -0.30951 2011 11 10 55875 0.1656 0.3441 -0.31029 2011 11 11 55876 0.1655 0.3430 -0.31095 2011 11 12 55877 0.1653 0.3419 -0.31151 2011 11 13 55878 0.1651 0.3408 -0.31201 2011 11 14 55879 0.1649 0.3397 -0.31250 2011 11 15 55880 0.1647 0.3386 -0.31305 2011 11 16 55881 0.1644 0.3376 -0.31370 2011 11 17 55882 0.1642 0.3365 -0.31456 2011 11 18 55883 0.1639 0.3354 -0.31570 2011 11 19 55884 0.1636 0.3344 -0.31702 2011 11 20 55885 0.1633 0.3333 -0.31849 2011 11 21 55886 0.1630 0.3323 -0.32008 2011 11 22 55887 0.1627 0.3312 -0.32172 2011 11 23 55888 0.1623 0.3302 -0.32330 2011 11 24 55889 0.1619 0.3291 -0.32473 2011 11 25 55890 0.1616 0.3281 -0.32596 2011 11 26 55891 0.1612 0.3271 -0.32704 2011 11 27 55892 0.1608 0.3261 -0.32803 2011 11 28 55893 0.1603 0.3251 -0.32901 2011 11 29 55894 0.1599 0.3241 -0.33003 2011 11 30 55895 0.1595 0.3231 -0.33119 2011 12 1 55896 0.1590 0.3221 -0.33245 2011 12 2 55897 0.1585 0.3212 -0.33381 2011 12 3 55898 0.1581 0.3202 -0.33522 2011 12 4 55899 0.1576 0.3193 -0.33661 2011 12 5 55900 0.1571 0.3183 -0.33794 2011 12 6 55901 0.1565 0.3174 -0.33916 2011 12 7 55902 0.1560 0.3165 -0.34025 2011 12 8 55903 0.1555 0.3156 -0.34129 2011 12 9 55904 0.1549 0.3147 -0.34233 2011 12 10 55905 0.1544 0.3138 -0.34335 2011 12 11 55906 0.1538 0.3129 -0.34426 2011 12 12 55907 0.1532 0.3120 -0.34519 2011 12 13 55908 0.1526 0.3111 -0.34623 2011 12 14 55909 0.1520 0.3103 -0.34746 2011 12 15 55910 0.1514 0.3095 -0.34890 2011 12 16 55911 0.1508 0.3086 -0.35047 2011 12 17 55912 0.1502 0.3078 -0.35214 2011 12 18 55913 0.1495 0.3070 -0.35386 2011 12 19 55914 0.1489 0.3062 -0.35554 2011 12 20 55915 0.1482 0.3054 -0.35705 2011 12 21 55916 0.1476 0.3046 -0.35840 2011 12 22 55917 0.1469 0.3039 -0.35951 2011 12 23 55918 0.1462 0.3031 -0.36044 2011 12 24 55919 0.1455 0.3024 -0.36133 2011 12 25 55920 0.1448 0.3017 -0.36223 2011 12 26 55921 0.1442 0.3010 -0.36318 2011 12 27 55922 0.1435 0.3003 -0.36417 2011 12 28 55923 0.1427 0.2996 -0.36516 2011 12 29 55924 0.1420 0.2989 -0.36610 2011 12 30 55925 0.1413 0.2982 -0.36695 2011 12 31 55926 0.1406 0.2976 -0.36773 2012 1 1 55927 0.1399 0.2969 -0.36844 2012 1 2 55928 0.1391 0.2963 -0.36910 2012 1 3 55929 0.1384 0.2957 -0.36971 2012 1 4 55930 0.1377 0.2951 -0.37030 2012 1 5 55931 0.1369 0.2945 -0.37085 2012 1 6 55932 0.1362 0.2939 -0.37140 2012 1 7 55933 0.1354 0.2934 -0.37200 2012 1 8 55934 0.1347 0.2928 -0.37267 2012 1 9 55935 0.1339 0.2923 -0.37345 2012 1 10 55936 0.1332 0.2917 -0.37433 2012 1 11 55937 0.1324 0.2912 -0.37531 2012 1 12 55938 0.1317 0.2907 -0.37649 2012 1 13 55939 0.1309 0.2902 -0.37783 2012 1 14 55940 0.1301 0.2898 -0.37929 2012 1 15 55941 0.1294 0.2893 -0.38076 2012 1 16 55942 0.1286 0.2888 -0.38213 2012 1 17 55943 0.1278 0.2884 -0.38337 2012 1 18 55944 0.1271 0.2880 -0.38446 2012 1 19 55945 0.1263 0.2876 -0.38542 2012 1 20 55946 0.1256 0.2872 -0.38626 2012 1 21 55947 0.1248 0.2868 -0.38710 2012 1 22 55948 0.1240 0.2864 -0.38797 2012 1 23 55949 0.1233 0.2860 -0.38892 2012 1 24 55950 0.1225 0.2857 -0.38993 2012 1 25 55951 0.1218 0.2854 -0.39103 2012 1 26 55952 0.1210 0.2850 -0.39217 2012 1 27 55953 0.1202 0.2847 -0.39332 2012 1 28 55954 0.1195 0.2844 -0.39446 2012 1 29 55955 0.1188 0.2841 -0.39548 2012 1 30 55956 0.1180 0.2839 -0.39637 2012 1 31 55957 0.1173 0.2836 -0.39714 2012 2 1 55958 0.1165 0.2833 -0.39774 2012 2 2 55959 0.1158 0.2831 -0.39822 2012 2 3 55960 0.1151 0.2829 -0.39866 2012 2 4 55961 0.1143 0.2827 -0.39914 2012 2 5 55962 0.1136 0.2825 -0.39977 2012 2 6 55963 0.1129 0.2823 -0.40061 2012 2 7 55964 0.1122 0.2821 -0.40161 2012 2 8 55965 0.1115 0.2819 -0.40271 2012 2 9 55966 0.1108 0.2818 -0.40390 2012 2 10 55967 0.1100 0.2816 -0.40521 2012 2 11 55968 0.1094 0.2815 -0.40648 2012 2 12 55969 0.1087 0.2814 -0.40759 2012 2 13 55970 0.1080 0.2813 -0.40854 2012 2 14 55971 0.1073 0.2812 -0.40934 2012 2 15 55972 0.1066 0.2811 -0.41002 2012 2 16 55973 0.1060 0.2810 -0.41064 2012 2 17 55974 0.1053 0.2809 -0.41125 2012 2 18 55975 0.1046 0.2809 -0.41195 2012 2 19 55976 0.1040 0.2808 -0.41275 2012 2 20 55977 0.1034 0.2808 -0.41362 2012 2 21 55978 0.1027 0.2808 -0.41458 2012 2 22 55979 0.1021 0.2807 -0.41561 2012 2 23 55980 0.1015 0.2807 -0.41675 2012 2 24 55981 0.1009 0.2807 -0.41803 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) 55597 -66.86 0.30 -6.63 0.13 55598 -66.92 0.23 -6.75 0.11 55599 -67.08 0.23 -6.90 0.11 55600 -67.17 0.14 -7.00 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55597 0.136 0.119 -0.260 0.130 55598 0.135 0.091 -0.240 0.110 55599 0.120 0.091 -0.220 0.110 55600 0.108 0.056 -0.214 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.