********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 17 February 2011 Vol. XXIV No. 007 ______________________________________________________________________ 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 11 55603 0.03226 .00009 0.20955 .00009 -0.163085 0.000011 11 2 12 55604 0.03072 .00009 0.21053 .00009 -0.163464 0.000011 11 2 13 55605 0.02940 .00009 0.21155 .00009 -0.163812 0.000010 11 2 14 55606 0.02778 .00009 0.21236 .00009 -0.164179 0.000012 11 2 15 55607 0.02622 .00009 0.21317 .00009 -0.164649 0.000012 11 2 16 55608 0.02492 .00010 0.21448 .00009 -0.165367 0.000012 11 2 17 55609 0.02347 .00010 0.21628 .00009 -0.166355 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 = 0.0892 - 0.0715 cos A - 0.0909 sin A + 0.0003 cos C - 0.0407 sin C y = 0.3405 - 0.0803 cos A + 0.0648 sin A - 0.0407 cos C - 0.0003 sin C UT1-UTC = -0.1633 - 0.00067 (MJD - 55617) - (UT2-UT1) where A = 2*pi*(MJD-55609)/365.25 and C = 2*pi*(MJD-55609)/435. TAI-UTC(MJD 55610) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55609)**0.80 S t = 0.00025 (MJD-55609)**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 18 55610 0.0218 0.2178 -0.16761 2011 2 19 55611 0.0201 0.2194 -0.16906 2011 2 20 55612 0.0184 0.2209 -0.17059 2011 2 21 55613 0.0167 0.2222 -0.17204 2011 2 22 55614 0.0151 0.2235 -0.17329 2011 2 23 55615 0.0136 0.2247 -0.17424 2011 2 24 55616 0.0122 0.2260 -0.17491 2011 2 25 55617 0.0108 0.2273 -0.17535 2011 2 26 55618 0.0093 0.2287 -0.17571 2011 2 27 55619 0.0079 0.2301 -0.17610 2011 2 28 55620 0.0065 0.2315 -0.17660 2011 3 1 55621 0.0051 0.2328 -0.17724 2011 3 2 55622 0.0038 0.2342 -0.17802 2011 3 3 55623 0.0025 0.2356 -0.17893 2011 3 4 55624 0.0012 0.2370 -0.17994 2011 3 5 55625 -0.0001 0.2384 -0.18100 2011 3 6 55626 -0.0013 0.2398 -0.18207 2011 3 7 55627 -0.0025 0.2413 -0.18309 2011 3 8 55628 -0.0036 0.2427 -0.18405 2011 3 9 55629 -0.0048 0.2442 -0.18493 2011 3 10 55630 -0.0059 0.2457 -0.18571 2011 3 11 55631 -0.0070 0.2472 -0.18641 2011 3 12 55632 -0.0080 0.2487 -0.18704 2011 3 13 55633 -0.0090 0.2502 -0.18767 2011 3 14 55634 -0.0100 0.2518 -0.18834 2011 3 15 55635 -0.0110 0.2533 -0.18916 2011 3 16 55636 -0.0119 0.2549 -0.19019 2011 3 17 55637 -0.0128 0.2565 -0.19151 2011 3 18 55638 -0.0137 0.2581 -0.19309 2011 3 19 55639 -0.0145 0.2597 -0.19485 2011 3 20 55640 -0.0153 0.2613 -0.19665 2011 3 21 55641 -0.0161 0.2630 -0.19832 2011 3 22 55642 -0.0169 0.2646 -0.19976 2011 3 23 55643 -0.0176 0.2663 -0.20092 2011 3 24 55644 -0.0183 0.2680 -0.20186 2011 3 25 55645 -0.0190 0.2696 -0.20264 2011 3 26 55646 -0.0196 0.2713 -0.20337 2011 3 27 55647 -0.0202 0.2730 -0.20413 2011 3 28 55648 -0.0208 0.2747 -0.20496 2011 3 29 55649 -0.0213 0.2764 -0.20589 2011 3 30 55650 -0.0218 0.2782 -0.20692 2011 3 31 55651 -0.0223 0.2799 -0.20803 2011 4 1 55652 -0.0227 0.2816 -0.20921 2011 4 2 55653 -0.0232 0.2834 -0.21039 2011 4 3 55654 -0.0236 0.2851 -0.21154 2011 4 4 55655 -0.0239 0.2869 -0.21262 2011 4 5 55656 -0.0242 0.2886 -0.21360 2011 4 6 55657 -0.0245 0.2904 -0.21446 2011 4 7 55658 -0.0248 0.2922 -0.21523 2011 4 8 55659 -0.0250 0.2940 -0.21591 2011 4 9 55660 -0.0253 0.2957 -0.21655 2011 4 10 55661 -0.0254 0.2975 -0.21721 2011 4 11 55662 -0.0256 0.2993 -0.21798 2011 4 12 55663 -0.0257 0.3011 -0.21892 2011 4 13 55664 -0.0258 0.3029 -0.22009 2011 4 14 55665 -0.0258 0.3046 -0.22150 2011 4 15 55666 -0.0259 0.3064 -0.22311 2011 4 16 55667 -0.0258 0.3082 -0.22483 2011 4 17 55668 -0.0258 0.3100 -0.22652 2011 4 18 55669 -0.0257 0.3118 -0.22805 2011 4 19 55670 -0.0256 0.3136 -0.22932 2011 4 20 55671 -0.0255 0.3154 -0.23034 2011 4 21 55672 -0.0254 0.3171 -0.23117 2011 4 22 55673 -0.0252 0.3189 -0.23190 2011 4 23 55674 -0.0250 0.3207 -0.23262 2011 4 24 55675 -0.0247 0.3224 -0.23339 2011 4 25 55676 -0.0245 0.3242 -0.23426 2011 4 26 55677 -0.0242 0.3260 -0.23521 2011 4 27 55678 -0.0238 0.3277 -0.23623 2011 4 28 55679 -0.0235 0.3295 -0.23730 2011 4 29 55680 -0.0231 0.3312 -0.23839 2011 4 30 55681 -0.0227 0.3330 -0.23944 2011 5 1 55682 -0.0222 0.3347 -0.24042 2011 5 2 55683 -0.0218 0.3364 -0.24130 2011 5 3 55684 -0.0213 0.3381 -0.24205 2011 5 4 55685 -0.0208 0.3398 -0.24269 2011 5 5 55686 -0.0202 0.3415 -0.24323 2011 5 6 55687 -0.0196 0.3432 -0.24371 2011 5 7 55688 -0.0190 0.3449 -0.24419 2011 5 8 55689 -0.0184 0.3466 -0.24474 2011 5 9 55690 -0.0178 0.3482 -0.24540 2011 5 10 55691 -0.0171 0.3499 -0.24624 2011 5 11 55692 -0.0164 0.3515 -0.24728 2011 5 12 55693 -0.0156 0.3531 -0.24849 2011 5 13 55694 -0.0149 0.3548 -0.24981 2011 5 14 55695 -0.0141 0.3564 -0.25112 2011 5 15 55696 -0.0133 0.3580 -0.25232 2011 5 16 55697 -0.0125 0.3595 -0.25331 2011 5 17 55698 -0.0116 0.3611 -0.25405 2011 5 18 55699 -0.0107 0.3626 -0.25456 2011 5 19 55700 -0.0098 0.3642 -0.25492 2011 5 20 55701 -0.0089 0.3657 -0.25523 2011 5 21 55702 -0.0080 0.3672 -0.25556 2011 5 22 55703 -0.0070 0.3687 -0.25597 2011 5 23 55704 -0.0060 0.3702 -0.25646 2011 5 24 55705 -0.0050 0.3717 -0.25703 2011 5 25 55706 -0.0040 0.3731 -0.25764 2011 5 26 55707 -0.0030 0.3745 -0.25826 2011 5 27 55708 -0.0019 0.3759 -0.25885 2011 5 28 55709 -0.0008 0.3773 -0.25937 2011 5 29 55710 0.0003 0.3787 -0.25978 2011 5 30 55711 0.0014 0.3801 -0.26006 2011 5 31 55712 0.0026 0.3814 -0.26021 2011 6 1 55713 0.0038 0.3828 -0.26024 2011 6 2 55714 0.0049 0.3841 -0.26020 2011 6 3 55715 0.0061 0.3854 -0.26013 2011 6 4 55716 0.0074 0.3866 -0.26011 2011 6 5 55717 0.0086 0.3879 -0.26021 2011 6 6 55718 0.0099 0.3891 -0.26044 2011 6 7 55719 0.0111 0.3903 -0.26085 2011 6 8 55720 0.0124 0.3915 -0.26143 2011 6 9 55721 0.0137 0.3927 -0.26212 2011 6 10 55722 0.0150 0.3938 -0.26283 2011 6 11 55723 0.0164 0.3950 -0.26345 2011 6 12 55724 0.0177 0.3961 -0.26391 2011 6 13 55725 0.0191 0.3972 -0.26414 2011 6 14 55726 0.0204 0.3982 -0.26417 2011 6 15 55727 0.0218 0.3993 -0.26403 2011 6 16 55728 0.0232 0.4003 -0.26381 2011 6 17 55729 0.0246 0.4013 -0.26360 2011 6 18 55730 0.0260 0.4023 -0.26347 2011 6 19 55731 0.0275 0.4032 -0.26343 2011 6 20 55732 0.0289 0.4042 -0.26348 2011 6 21 55733 0.0304 0.4051 -0.26360 2011 6 22 55734 0.0318 0.4060 -0.26374 2011 6 23 55735 0.0333 0.4069 -0.26386 2011 6 24 55736 0.0348 0.4077 -0.26392 2011 6 25 55737 0.0363 0.4085 -0.26388 2011 6 26 55738 0.0378 0.4093 -0.26373 2011 6 27 55739 0.0393 0.4101 -0.26344 2011 6 28 55740 0.0408 0.4109 -0.26304 2011 6 29 55741 0.0423 0.4116 -0.26255 2011 6 30 55742 0.0438 0.4123 -0.26203 2011 7 1 55743 0.0454 0.4130 -0.26155 2011 7 2 55744 0.0469 0.4137 -0.26117 2011 7 3 55745 0.0484 0.4143 -0.26097 2011 7 4 55746 0.0500 0.4149 -0.26096 2011 7 5 55747 0.0515 0.4155 -0.26114 2011 7 6 55748 0.0531 0.4161 -0.26145 2011 7 7 55749 0.0547 0.4166 -0.26179 2011 7 8 55750 0.0562 0.4171 -0.26206 2011 7 9 55751 0.0578 0.4176 -0.26218 2011 7 10 55752 0.0593 0.4181 -0.26209 2011 7 11 55753 0.0609 0.4185 -0.26181 2011 7 12 55754 0.0625 0.4189 -0.26137 2011 7 13 55755 0.0641 0.4193 -0.26084 2011 7 14 55756 0.0656 0.4197 -0.26031 2011 7 15 55757 0.0672 0.4201 -0.25985 2011 7 16 55758 0.0688 0.4204 -0.25951 2011 7 17 55759 0.0703 0.4207 -0.25928 2011 7 18 55760 0.0719 0.4210 -0.25915 2011 7 19 55761 0.0735 0.4212 -0.25907 2011 7 20 55762 0.0750 0.4215 -0.25900 2011 7 21 55763 0.0766 0.4217 -0.25890 2011 7 22 55764 0.0782 0.4218 -0.25872 2011 7 23 55765 0.0797 0.4220 -0.25844 2011 7 24 55766 0.0813 0.4221 -0.25805 2011 7 25 55767 0.0828 0.4222 -0.25755 2011 7 26 55768 0.0844 0.4223 -0.25697 2011 7 27 55769 0.0859 0.4224 -0.25635 2011 7 28 55770 0.0875 0.4224 -0.25576 2011 7 29 55771 0.0890 0.4224 -0.25528 2011 7 30 55772 0.0905 0.4224 -0.25497 2011 7 31 55773 0.0920 0.4224 -0.25489 2011 8 1 55774 0.0935 0.4224 -0.25505 2011 8 2 55775 0.0950 0.4223 -0.25539 2011 8 3 55776 0.0965 0.4222 -0.25581 2011 8 4 55777 0.0980 0.4221 -0.25621 2011 8 5 55778 0.0995 0.4219 -0.25646 2011 8 6 55779 0.1010 0.4218 -0.25652 2011 8 7 55780 0.1024 0.4216 -0.25637 2011 8 8 55781 0.1039 0.4214 -0.25606 2011 8 9 55782 0.1053 0.4211 -0.25565 2011 8 10 55783 0.1068 0.4209 -0.25525 2011 8 11 55784 0.1082 0.4206 -0.25490 2011 8 12 55785 0.1096 0.4203 -0.25468 2011 8 13 55786 0.1110 0.4200 -0.25459 2011 8 14 55787 0.1124 0.4196 -0.25462 2011 8 15 55788 0.1138 0.4193 -0.25475 2011 8 16 55789 0.1151 0.4189 -0.25491 2011 8 17 55790 0.1165 0.4185 -0.25508 2011 8 18 55791 0.1178 0.4181 -0.25519 2011 8 19 55792 0.1192 0.4176 -0.25522 2011 8 20 55793 0.1205 0.4172 -0.25514 2011 8 21 55794 0.1218 0.4167 -0.25496 2011 8 22 55795 0.1231 0.4162 -0.25469 2011 8 23 55796 0.1243 0.4157 -0.25437 2011 8 24 55797 0.1256 0.4151 -0.25406 2011 8 25 55798 0.1268 0.4146 -0.25381 2011 8 26 55799 0.1281 0.4140 -0.25370 2011 8 27 55800 0.1293 0.4134 -0.25381 2011 8 28 55801 0.1305 0.4128 -0.25417 2011 8 29 55802 0.1317 0.4122 -0.25476 2011 8 30 55803 0.1328 0.4115 -0.25550 2011 8 31 55804 0.1340 0.4109 -0.25628 2011 9 1 55805 0.1351 0.4102 -0.25698 2011 9 2 55806 0.1362 0.4095 -0.25751 2011 9 3 55807 0.1373 0.4088 -0.25786 2011 9 4 55808 0.1384 0.4080 -0.25805 2011 9 5 55809 0.1395 0.4073 -0.25815 2011 9 6 55810 0.1406 0.4065 -0.25825 2011 9 7 55811 0.1416 0.4057 -0.25841 2011 9 8 55812 0.1426 0.4050 -0.25869 2011 9 9 55813 0.1436 0.4041 -0.25911 2011 9 10 55814 0.1446 0.4033 -0.25966 2011 9 11 55815 0.1455 0.4025 -0.26033 2011 9 12 55816 0.1465 0.4016 -0.26106 2011 9 13 55817 0.1474 0.4008 -0.26181 2011 9 14 55818 0.1483 0.3999 -0.26253 2011 9 15 55819 0.1492 0.3990 -0.26317 2011 9 16 55820 0.1501 0.3981 -0.26370 2011 9 17 55821 0.1509 0.3972 -0.26412 2011 9 18 55822 0.1518 0.3963 -0.26442 2011 9 19 55823 0.1526 0.3953 -0.26465 2011 9 20 55824 0.1534 0.3944 -0.26483 2011 9 21 55825 0.1541 0.3934 -0.26503 2011 9 22 55826 0.1549 0.3925 -0.26534 2011 9 23 55827 0.1556 0.3915 -0.26586 2011 9 24 55828 0.1563 0.3905 -0.26665 2011 9 25 55829 0.1570 0.3895 -0.26771 2011 9 26 55830 0.1577 0.3885 -0.26898 2011 9 27 55831 0.1583 0.3875 -0.27034 2011 9 28 55832 0.1590 0.3864 -0.27164 2011 9 29 55833 0.1596 0.3854 -0.27279 2011 9 30 55834 0.1602 0.3843 -0.27375 2011 10 1 55835 0.1608 0.3833 -0.27449 2011 10 2 55836 0.1613 0.3822 -0.27514 2011 10 3 55837 0.1618 0.3812 -0.27580 2011 10 4 55838 0.1623 0.3801 -0.27648 2011 10 5 55839 0.1628 0.3790 -0.27727 2011 10 6 55840 0.1633 0.3779 -0.27806 2011 10 7 55841 0.1638 0.3768 -0.27891 2011 10 8 55842 0.1642 0.3757 -0.27977 2011 10 9 55843 0.1646 0.3746 -0.28067 2011 10 10 55844 0.1650 0.3735 -0.28162 2011 10 11 55845 0.1654 0.3724 -0.28254 2011 10 12 55846 0.1657 0.3713 -0.28344 2011 10 13 55847 0.1660 0.3702 -0.28426 2011 10 14 55848 0.1663 0.3690 -0.28496 2011 10 15 55849 0.1666 0.3679 -0.28555 2011 10 16 55850 0.1669 0.3668 -0.28604 2011 10 17 55851 0.1671 0.3656 -0.28654 2011 10 18 55852 0.1674 0.3645 -0.28709 2011 10 19 55853 0.1676 0.3634 -0.28775 2011 10 20 55854 0.1678 0.3622 -0.28858 2011 10 21 55855 0.1679 0.3611 -0.28960 2011 10 22 55856 0.1681 0.3599 -0.29081 2011 10 23 55857 0.1682 0.3588 -0.29228 2011 10 24 55858 0.1683 0.3576 -0.29388 2011 10 25 55859 0.1684 0.3565 -0.29550 2011 10 26 55860 0.1685 0.3553 -0.29701 2011 10 27 55861 0.1685 0.3542 -0.29834 2011 10 28 55862 0.1685 0.3531 -0.29943 2011 10 29 55863 0.1686 0.3519 -0.30031 2011 10 30 55864 0.1685 0.3508 -0.30106 2011 10 31 55865 0.1685 0.3496 -0.30177 2011 11 1 55866 0.1685 0.3485 -0.30255 2011 11 2 55867 0.1684 0.3473 -0.30340 2011 11 3 55868 0.1683 0.3462 -0.30440 2011 11 4 55869 0.1682 0.3451 -0.30558 2011 11 5 55870 0.1681 0.3440 -0.30679 2011 11 6 55871 0.1680 0.3428 -0.30800 2011 11 7 55872 0.1678 0.3417 -0.30923 2011 11 8 55873 0.1677 0.3406 -0.31046 2011 11 9 55874 0.1675 0.3395 -0.31166 2011 11 10 55875 0.1673 0.3384 -0.31277 2011 11 11 55876 0.1670 0.3373 -0.31378 2011 11 12 55877 0.1668 0.3362 -0.31471 2011 11 13 55878 0.1665 0.3351 -0.31556 2011 11 14 55879 0.1663 0.3340 -0.31638 2011 11 15 55880 0.1660 0.3329 -0.31721 2011 11 16 55881 0.1657 0.3318 -0.31819 2011 11 17 55882 0.1654 0.3307 -0.31935 2011 11 18 55883 0.1650 0.3297 -0.32074 2011 11 19 55884 0.1647 0.3286 -0.32237 2011 11 20 55885 0.1643 0.3276 -0.32417 2011 11 21 55886 0.1639 0.3265 -0.32607 2011 11 22 55887 0.1635 0.3255 -0.32793 2011 11 23 55888 0.1631 0.3245 -0.32966 2011 11 24 55889 0.1627 0.3234 -0.33126 2011 11 25 55890 0.1622 0.3224 -0.33277 2011 11 26 55891 0.1618 0.3214 -0.33417 2011 11 27 55892 0.1613 0.3204 -0.33541 2011 11 28 55893 0.1608 0.3194 -0.33665 2011 11 29 55894 0.1604 0.3185 -0.33799 2011 11 30 55895 0.1599 0.3175 -0.33948 2011 12 1 55896 0.1593 0.3165 -0.34108 2011 12 2 55897 0.1588 0.3156 -0.34270 2011 12 3 55898 0.1583 0.3146 -0.34427 2011 12 4 55899 0.1577 0.3137 -0.34578 2011 12 5 55900 0.1571 0.3128 -0.34718 2011 12 6 55901 0.1566 0.3119 -0.34842 2011 12 7 55902 0.1560 0.3110 -0.34951 2011 12 8 55903 0.1554 0.3101 -0.35044 2011 12 9 55904 0.1548 0.3092 -0.35124 2011 12 10 55905 0.1541 0.3083 -0.35201 2011 12 11 55906 0.1535 0.3075 -0.35277 2011 12 12 55907 0.1529 0.3066 -0.35355 2011 12 13 55908 0.1522 0.3058 -0.35436 2011 12 14 55909 0.1516 0.3050 -0.35520 2011 12 15 55910 0.1509 0.3042 -0.35609 2011 12 16 55911 0.1502 0.3034 -0.35704 2011 12 17 55912 0.1495 0.3026 -0.35807 2011 12 18 55913 0.1489 0.3018 -0.35919 2011 12 19 55914 0.1482 0.3010 -0.36033 2011 12 20 55915 0.1474 0.3003 -0.36145 2011 12 21 55916 0.1467 0.2995 -0.36251 2011 12 22 55917 0.1460 0.2988 -0.36346 2011 12 23 55918 0.1453 0.2981 -0.36433 2011 12 24 55919 0.1446 0.2974 -0.36519 2011 12 25 55920 0.1438 0.2967 -0.36608 2011 12 26 55921 0.1431 0.2960 -0.36707 2011 12 27 55922 0.1423 0.2953 -0.36812 2011 12 28 55923 0.1416 0.2947 -0.36920 2011 12 29 55924 0.1408 0.2941 -0.37037 2011 12 30 55925 0.1400 0.2934 -0.37156 2011 12 31 55926 0.1393 0.2928 -0.37277 2012 1 1 55927 0.1385 0.2922 -0.37391 2012 1 2 55928 0.1377 0.2916 -0.37495 2012 1 3 55929 0.1369 0.2910 -0.37588 2012 1 4 55930 0.1362 0.2905 -0.37672 2012 1 5 55931 0.1354 0.2899 -0.37746 2012 1 6 55932 0.1346 0.2894 -0.37811 2012 1 7 55933 0.1338 0.2889 -0.37875 2012 1 8 55934 0.1330 0.2884 -0.37939 2012 1 9 55935 0.1322 0.2879 -0.38007 2012 1 10 55936 0.1314 0.2874 -0.38084 2012 1 11 55937 0.1306 0.2869 -0.38177 2012 1 12 55938 0.1298 0.2865 -0.38285 2012 1 13 55939 0.1290 0.2860 -0.38410 2012 1 14 55940 0.1282 0.2856 -0.38546 2012 1 15 55941 0.1274 0.2852 -0.38679 2012 1 16 55942 0.1266 0.2848 -0.38801 2012 1 17 55943 0.1258 0.2844 -0.38907 2012 1 18 55944 0.1250 0.2840 -0.38991 2012 1 19 55945 0.1242 0.2837 -0.39055 2012 1 20 55946 0.1234 0.2833 -0.39109 2012 1 21 55947 0.1226 0.2830 -0.39164 2012 1 22 55948 0.1218 0.2827 -0.39232 2012 1 23 55949 0.1210 0.2824 -0.39319 2012 1 24 55950 0.1202 0.2821 -0.39415 2012 1 25 55951 0.1194 0.2818 -0.39511 2012 1 26 55952 0.1186 0.2815 -0.39604 2012 1 27 55953 0.1178 0.2812 -0.39695 2012 1 28 55954 0.1171 0.2810 -0.39775 2012 1 29 55955 0.1163 0.2808 -0.39838 2012 1 30 55956 0.1155 0.2806 -0.39889 2012 1 31 55957 0.1147 0.2803 -0.39931 2012 2 1 55958 0.1140 0.2802 -0.39967 2012 2 2 55959 0.1132 0.2800 -0.40001 2012 2 3 55960 0.1125 0.2798 -0.40033 2012 2 4 55961 0.1117 0.2796 -0.40071 2012 2 5 55962 0.1110 0.2795 -0.40119 2012 2 6 55963 0.1102 0.2794 -0.40174 2012 2 7 55964 0.1095 0.2793 -0.40244 2012 2 8 55965 0.1087 0.2791 -0.40334 2012 2 9 55966 0.1080 0.2790 -0.40449 2012 2 10 55967 0.1073 0.2790 -0.40594 2012 2 11 55968 0.1066 0.2789 -0.40747 2012 2 12 55969 0.1059 0.2788 -0.40899 2012 2 13 55970 0.1052 0.2788 -0.41046 2012 2 14 55971 0.1045 0.2787 -0.41169 2012 2 15 55972 0.1038 0.2787 -0.41270 2012 2 16 55973 0.1031 0.2787 -0.41367 2012 2 17 55974 0.1024 0.2787 -0.41460 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) 55587 -67.55 0.21 -6.48 0.34 55588 -67.60 0.21 -6.57 0.34 55589 -67.68 0.21 -6.68 0.34 55590 -67.79 0.33 -6.82 0.34 55591 -67.84 0.33 -6.96 0.34 55592 -67.75 0.33 -7.04 0.34 55593 -67.52 0.74 -7.03 0.34 55594 -67.28 0.17 -6.90 0.34 55595 -67.12 0.17 -6.69 0.34 55596 -67.05 0.17 -6.52 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55587 0.016 0.084 -0.252 0.340 55588 0.014 0.084 -0.250 0.340 55589 0.025 0.084 -0.243 0.340 55590 0.046 0.131 -0.238 0.340 55591 0.060 0.131 -0.236 0.340 55592 0.056 0.131 -0.220 0.340 55593 0.056 0.294 -0.204 0.340 55594 0.066 0.068 -0.184 0.340 55595 0.077 0.068 -0.161 0.340 55596 0.074 0.068 -0.143 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.