********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 7 April 2011 Vol. XXIV No. 014 ______________________________________________________________________ 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 4 1 55652 -.03306 .00010 0.27911 .00009 -0.211705 0.000008 11 4 2 55653 -.03466 .00009 0.28060 .00009 -0.213198 0.000008 11 4 3 55654 -.03611 .00009 0.28198 .00009 -0.214690 0.000008 11 4 4 55655 -.03743 .00009 0.28360 .00009 -0.216061 0.000009 11 4 5 55656 -.03928 .00009 0.28538 .00009 -0.217264 0.000010 11 4 6 55657 -.04124 .00010 0.28702 .00009 -0.218326 0.000010 11 4 7 55658 -.04240 .00010 0.28868 .00009 -0.219263 0.000009 IERS Final Values MJD x y UT1-UTC " " s 11 2 2 55594 0.0437 0.2014 -0.15705 11 2 3 55595 0.0428 0.2023 -0.15767 11 2 4 55596 0.0416 0.2026 -0.15842 11 2 5 55597 0.0402 0.2029 -0.15922 11 2 6 55598 0.0391 0.2034 -0.16000 11 2 7 55599 0.0382 0.2043 -0.16075 11 2 8 55600 0.0375 0.2057 -0.16146 11 2 9 55601 0.0362 0.2073 -0.16208 11 2 10 55602 0.0343 0.2086 -0.16262 11 2 11 55603 0.0321 0.2096 -0.16309 11 2 12 55604 0.0307 0.2105 -0.16346 11 2 13 55605 0.0294 0.2116 -0.16381 11 2 14 55606 0.0278 0.2124 -0.16418 11 2 15 55607 0.0261 0.2131 -0.16467 11 2 16 55608 0.0249 0.2144 -0.16537 11 2 17 55609 0.0234 0.2163 -0.16638 11 2 18 55610 0.0218 0.2178 -0.16767 11 2 19 55611 0.0200 0.2189 -0.16913 11 2 20 55612 0.0186 0.2200 -0.17075 11 2 21 55613 0.0168 0.2207 -0.17239 11 2 22 55614 0.0152 0.2213 -0.17383 11 2 23 55615 0.0138 0.2220 -0.17499 11 2 24 55616 0.0123 0.2229 -0.17585 11 2 25 55617 0.0102 0.2240 -0.17648 11 2 26 55618 0.0076 0.2247 -0.17695 11 2 27 55619 0.0050 0.2257 -0.17737 11 2 28 55620 0.0026 0.2269 -0.17786 11 3 1 55621 0.0008 0.2283 -0.17846 _______________________________________________________________________ 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 = 0.0906 - 0.1121 cos A - 0.0003 sin A - 0.0226 cos C - 0.0383 sin C y = 0.3266 + 0.0022 cos A + 0.1022 sin A - 0.0383 cos C + 0.0226 sin C UT1-UTC = -0.1973 - 0.00064 (MJD - 55666) - (UT2-UT1) where A = 2*pi*(MJD-55658)/365.25 and C = 2*pi*(MJD-55658)/435. TAI-UTC(MJD 55659) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55658)**0.80 S t = 0.00025 (MJD-55658)**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 4 8 55659 -0.0435 0.2904 -0.22008 2011 4 9 55660 -0.0441 0.2923 -0.22083 2011 4 10 55661 -0.0446 0.2942 -0.22162 2011 4 11 55662 -0.0449 0.2962 -0.22250 2011 4 12 55663 -0.0453 0.2981 -0.22349 2011 4 13 55664 -0.0457 0.3000 -0.22466 2011 4 14 55665 -0.0460 0.3019 -0.22603 2011 4 15 55666 -0.0463 0.3038 -0.22760 2011 4 16 55667 -0.0465 0.3056 -0.22927 2011 4 17 55668 -0.0466 0.3075 -0.23094 2011 4 18 55669 -0.0466 0.3094 -0.23249 2011 4 19 55670 -0.0466 0.3113 -0.23382 2011 4 20 55671 -0.0466 0.3132 -0.23492 2011 4 21 55672 -0.0466 0.3151 -0.23585 2011 4 22 55673 -0.0465 0.3170 -0.23671 2011 4 23 55674 -0.0464 0.3189 -0.23758 2011 4 24 55675 -0.0462 0.3208 -0.23851 2011 4 25 55676 -0.0460 0.3227 -0.23952 2011 4 26 55677 -0.0458 0.3246 -0.24061 2011 4 27 55678 -0.0455 0.3265 -0.24173 2011 4 28 55679 -0.0453 0.3283 -0.24287 2011 4 29 55680 -0.0449 0.3302 -0.24397 2011 4 30 55681 -0.0446 0.3321 -0.24501 2011 5 1 55682 -0.0442 0.3340 -0.24596 2011 5 2 55683 -0.0438 0.3358 -0.24678 2011 5 3 55684 -0.0433 0.3377 -0.24749 2011 5 4 55685 -0.0428 0.3395 -0.24807 2011 5 5 55686 -0.0423 0.3414 -0.24856 2011 5 6 55687 -0.0418 0.3432 -0.24899 2011 5 7 55688 -0.0412 0.3450 -0.24941 2011 5 8 55689 -0.0406 0.3468 -0.24988 2011 5 9 55690 -0.0400 0.3486 -0.25046 2011 5 10 55691 -0.0394 0.3504 -0.25122 2011 5 11 55692 -0.0387 0.3522 -0.25219 2011 5 12 55693 -0.0380 0.3540 -0.25334 2011 5 13 55694 -0.0372 0.3557 -0.25461 2011 5 14 55695 -0.0365 0.3575 -0.25588 2011 5 15 55696 -0.0357 0.3592 -0.25705 2011 5 16 55697 -0.0349 0.3610 -0.25801 2011 5 17 55698 -0.0340 0.3627 -0.25871 2011 5 18 55699 -0.0332 0.3644 -0.25919 2011 5 19 55700 -0.0323 0.3661 -0.25952 2011 5 20 55701 -0.0313 0.3677 -0.25979 2011 5 21 55702 -0.0304 0.3694 -0.26009 2011 5 22 55703 -0.0294 0.3710 -0.26047 2011 5 23 55704 -0.0284 0.3727 -0.26093 2011 5 24 55705 -0.0274 0.3743 -0.26147 2011 5 25 55706 -0.0264 0.3759 -0.26206 2011 5 26 55707 -0.0253 0.3774 -0.26264 2011 5 27 55708 -0.0242 0.3790 -0.26319 2011 5 28 55709 -0.0231 0.3806 -0.26366 2011 5 29 55710 -0.0220 0.3821 -0.26402 2011 5 30 55711 -0.0209 0.3836 -0.26425 2011 5 31 55712 -0.0197 0.3851 -0.26434 2011 6 1 55713 -0.0185 0.3866 -0.26432 2011 6 2 55714 -0.0173 0.3880 -0.26422 2011 6 3 55715 -0.0161 0.3895 -0.26409 2011 6 4 55716 -0.0148 0.3909 -0.26400 2011 6 5 55717 -0.0135 0.3923 -0.26402 2011 6 6 55718 -0.0122 0.3937 -0.26420 2011 6 7 55719 -0.0109 0.3950 -0.26456 2011 6 8 55720 -0.0096 0.3964 -0.26508 2011 6 9 55721 -0.0083 0.3977 -0.26572 2011 6 10 55722 -0.0069 0.3990 -0.26636 2011 6 11 55723 -0.0055 0.4003 -0.26692 2011 6 12 55724 -0.0041 0.4015 -0.26731 2011 6 13 55725 -0.0027 0.4028 -0.26747 2011 6 14 55726 -0.0013 0.4040 -0.26742 2011 6 15 55727 0.0002 0.4052 -0.26721 2011 6 16 55728 0.0016 0.4064 -0.26691 2011 6 17 55729 0.0031 0.4075 -0.26662 2011 6 18 55730 0.0046 0.4087 -0.26641 2011 6 19 55731 0.0061 0.4098 -0.26630 2011 6 20 55732 0.0076 0.4108 -0.26628 2011 6 21 55733 0.0091 0.4119 -0.26632 2011 6 22 55734 0.0107 0.4129 -0.26639 2011 6 23 55735 0.0122 0.4140 -0.26645 2011 6 24 55736 0.0138 0.4150 -0.26644 2011 6 25 55737 0.0153 0.4159 -0.26634 2011 6 26 55738 0.0169 0.4169 -0.26612 2011 6 27 55739 0.0185 0.4178 -0.26577 2011 6 28 55740 0.0201 0.4187 -0.26530 2011 6 29 55741 0.0217 0.4196 -0.26476 2011 6 30 55742 0.0233 0.4204 -0.26419 2011 7 1 55743 0.0250 0.4212 -0.26365 2011 7 2 55744 0.0266 0.4220 -0.26323 2011 7 3 55745 0.0282 0.4228 -0.26297 2011 7 4 55746 0.0299 0.4236 -0.26292 2011 7 5 55747 0.0316 0.4243 -0.26307 2011 7 6 55748 0.0332 0.4250 -0.26335 2011 7 7 55749 0.0349 0.4257 -0.26366 2011 7 8 55750 0.0365 0.4263 -0.26390 2011 7 9 55751 0.0382 0.4269 -0.26398 2011 7 10 55752 0.0399 0.4275 -0.26387 2011 7 11 55753 0.0416 0.4281 -0.26356 2011 7 12 55754 0.0433 0.4287 -0.26309 2011 7 13 55755 0.0450 0.4292 -0.26253 2011 7 14 55756 0.0467 0.4297 -0.26198 2011 7 15 55757 0.0483 0.4302 -0.26151 2011 7 16 55758 0.0500 0.4306 -0.26115 2011 7 17 55759 0.0517 0.4311 -0.26091 2011 7 18 55760 0.0534 0.4315 -0.26078 2011 7 19 55761 0.0551 0.4318 -0.26071 2011 7 20 55762 0.0568 0.4322 -0.26065 2011 7 21 55763 0.0585 0.4325 -0.26056 2011 7 22 55764 0.0602 0.4328 -0.26039 2011 7 23 55765 0.0619 0.4331 -0.26011 2011 7 24 55766 0.0636 0.4333 -0.25972 2011 7 25 55767 0.0652 0.4336 -0.25920 2011 7 26 55768 0.0669 0.4338 -0.25859 2011 7 27 55769 0.0686 0.4339 -0.25795 2011 7 28 55770 0.0703 0.4341 -0.25734 2011 7 29 55771 0.0719 0.4342 -0.25682 2011 7 30 55772 0.0736 0.4343 -0.25648 2011 7 31 55773 0.0752 0.4344 -0.25637 2011 8 1 55774 0.0769 0.4344 -0.25649 2011 8 2 55775 0.0785 0.4345 -0.25679 2011 8 3 55776 0.0802 0.4345 -0.25717 2011 8 4 55777 0.0818 0.4345 -0.25751 2011 8 5 55778 0.0834 0.4344 -0.25772 2011 8 6 55779 0.0851 0.4344 -0.25772 2011 8 7 55780 0.0867 0.4343 -0.25751 2011 8 8 55781 0.0883 0.4342 -0.25714 2011 8 9 55782 0.0899 0.4340 -0.25667 2011 8 10 55783 0.0915 0.4339 -0.25619 2011 8 11 55784 0.0930 0.4337 -0.25578 2011 8 12 55785 0.0946 0.4335 -0.25548 2011 8 13 55786 0.0962 0.4332 -0.25531 2011 8 14 55787 0.0977 0.4330 -0.25526 2011 8 15 55788 0.0992 0.4327 -0.25531 2011 8 16 55789 0.1008 0.4324 -0.25539 2011 8 17 55790 0.1023 0.4321 -0.25547 2011 8 18 55791 0.1038 0.4318 -0.25551 2011 8 19 55792 0.1053 0.4314 -0.25546 2011 8 20 55793 0.1067 0.4310 -0.25531 2011 8 21 55794 0.1082 0.4306 -0.25507 2011 8 22 55795 0.1097 0.4302 -0.25476 2011 8 23 55796 0.1111 0.4297 -0.25440 2011 8 24 55797 0.1125 0.4293 -0.25406 2011 8 25 55798 0.1139 0.4288 -0.25380 2011 8 26 55799 0.1153 0.4283 -0.25370 2011 8 27 55800 0.1167 0.4277 -0.25383 2011 8 28 55801 0.1181 0.4272 -0.25423 2011 8 29 55802 0.1194 0.4266 -0.25486 2011 8 30 55803 0.1208 0.4260 -0.25566 2011 8 31 55804 0.1221 0.4254 -0.25649 2011 9 1 55805 0.1234 0.4248 -0.25723 2011 9 2 55806 0.1247 0.4242 -0.25778 2011 9 3 55807 0.1260 0.4235 -0.25811 2011 9 4 55808 0.1272 0.4228 -0.25824 2011 9 5 55809 0.1284 0.4221 -0.25826 2011 9 6 55810 0.1297 0.4214 -0.25825 2011 9 7 55811 0.1309 0.4207 -0.25828 2011 9 8 55812 0.1321 0.4200 -0.25842 2011 9 9 55813 0.1332 0.4192 -0.25869 2011 9 10 55814 0.1344 0.4184 -0.25909 2011 9 11 55815 0.1355 0.4176 -0.25959 2011 9 12 55816 0.1366 0.4168 -0.26016 2011 9 13 55817 0.1377 0.4160 -0.26075 2011 9 14 55818 0.1388 0.4151 -0.26130 2011 9 15 55819 0.1399 0.4143 -0.26178 2011 9 16 55820 0.1409 0.4134 -0.26217 2011 9 17 55821 0.1419 0.4125 -0.26247 2011 9 18 55822 0.1429 0.4116 -0.26268 2011 9 19 55823 0.1439 0.4107 -0.26284 2011 9 20 55824 0.1449 0.4098 -0.26299 2011 9 21 55825 0.1458 0.4089 -0.26319 2011 9 22 55826 0.1467 0.4079 -0.26352 2011 9 23 55827 0.1476 0.4069 -0.26404 2011 9 24 55828 0.1485 0.4060 -0.26481 2011 9 25 55829 0.1494 0.4050 -0.26583 2011 9 26 55830 0.1502 0.4040 -0.26706 2011 9 27 55831 0.1510 0.4030 -0.26841 2011 9 28 55832 0.1518 0.4019 -0.26975 2011 9 29 55833 0.1526 0.4009 -0.27094 2011 9 30 55834 0.1534 0.3999 -0.27191 2011 10 1 55835 0.1541 0.3988 -0.27266 2011 10 2 55836 0.1548 0.3978 -0.27323 2011 10 3 55837 0.1555 0.3967 -0.27374 2011 10 4 55838 0.1562 0.3956 -0.27425 2011 10 5 55839 0.1569 0.3945 -0.27484 2011 10 6 55840 0.1575 0.3934 -0.27553 2011 10 7 55841 0.1581 0.3923 -0.27634 2011 10 8 55842 0.1587 0.3912 -0.27723 2011 10 9 55843 0.1593 0.3901 -0.27818 2011 10 10 55844 0.1598 0.3890 -0.27915 2011 10 11 55845 0.1603 0.3878 -0.28009 2011 10 12 55846 0.1608 0.3867 -0.28098 2011 10 13 55847 0.1613 0.3856 -0.28179 2011 10 14 55848 0.1618 0.3844 -0.28251 2011 10 15 55849 0.1622 0.3832 -0.28317 2011 10 16 55850 0.1627 0.3821 -0.28379 2011 10 17 55851 0.1631 0.3809 -0.28441 2011 10 18 55852 0.1634 0.3798 -0.28509 2011 10 19 55853 0.1638 0.3786 -0.28587 2011 10 20 55854 0.1641 0.3774 -0.28681 2011 10 21 55855 0.1645 0.3762 -0.28796 2011 10 22 55856 0.1647 0.3750 -0.28935 2011 10 23 55857 0.1650 0.3739 -0.29096 2011 10 24 55858 0.1653 0.3727 -0.29272 2011 10 25 55859 0.1655 0.3715 -0.29453 2011 10 26 55860 0.1657 0.3703 -0.29626 2011 10 27 55861 0.1659 0.3691 -0.29778 2011 10 28 55862 0.1661 0.3679 -0.29904 2011 10 29 55863 0.1662 0.3667 -0.30005 2011 10 30 55864 0.1664 0.3655 -0.30087 2011 10 31 55865 0.1665 0.3643 -0.30160 2011 11 1 55866 0.1666 0.3631 -0.30231 2011 11 2 55867 0.1666 0.3619 -0.30306 2011 11 3 55868 0.1667 0.3607 -0.30388 2011 11 4 55869 0.1667 0.3595 -0.30476 2011 11 5 55870 0.1667 0.3583 -0.30566 2011 11 6 55871 0.1667 0.3571 -0.30655 2011 11 7 55872 0.1667 0.3559 -0.30739 2011 11 8 55873 0.1667 0.3548 -0.30816 2011 11 9 55874 0.1666 0.3536 -0.30884 2011 11 10 55875 0.1665 0.3524 -0.30942 2011 11 11 55876 0.1664 0.3512 -0.30990 2011 11 12 55877 0.1663 0.3500 -0.31030 2011 11 13 55878 0.1662 0.3489 -0.31067 2011 11 14 55879 0.1660 0.3477 -0.31106 2011 11 15 55880 0.1658 0.3465 -0.31153 2011 11 16 55881 0.1657 0.3454 -0.31215 2011 11 17 55882 0.1654 0.3442 -0.31294 2011 11 18 55883 0.1652 0.3430 -0.31392 2011 11 19 55884 0.1650 0.3419 -0.31515 2011 11 20 55885 0.1647 0.3408 -0.31652 2011 11 21 55886 0.1644 0.3396 -0.31796 2011 11 22 55887 0.1642 0.3385 -0.31936 2011 11 23 55888 0.1638 0.3374 -0.32062 2011 11 24 55889 0.1635 0.3362 -0.32171 2011 11 25 55890 0.1632 0.3351 -0.32265 2011 11 26 55891 0.1628 0.3340 -0.32350 2011 11 27 55892 0.1625 0.3329 -0.32428 2011 11 28 55893 0.1621 0.3318 -0.32510 2011 11 29 55894 0.1617 0.3308 -0.32602 2011 11 30 55895 0.1612 0.3297 -0.32702 2011 12 1 55896 0.1608 0.3286 -0.32807 2011 12 2 55897 0.1604 0.3276 -0.32917 2011 12 3 55898 0.1599 0.3265 -0.33034 2011 12 4 55899 0.1594 0.3255 -0.33143 2011 12 5 55900 0.1590 0.3244 -0.33240 2011 12 6 55901 0.1585 0.3234 -0.33331 2011 12 7 55902 0.1579 0.3224 -0.33408 2011 12 8 55903 0.1574 0.3214 -0.33468 2011 12 9 55904 0.1569 0.3204 -0.33520 2011 12 10 55905 0.1563 0.3194 -0.33567 2011 12 11 55906 0.1558 0.3184 -0.33612 2011 12 12 55907 0.1552 0.3174 -0.33665 2011 12 13 55908 0.1546 0.3165 -0.33733 2011 12 14 55909 0.1540 0.3155 -0.33816 2011 12 15 55910 0.1534 0.3146 -0.33915 2011 12 16 55911 0.1528 0.3136 -0.34029 2011 12 17 55912 0.1522 0.3127 -0.34154 2011 12 18 55913 0.1515 0.3118 -0.34290 2011 12 19 55914 0.1509 0.3109 -0.34425 2011 12 20 55915 0.1502 0.3100 -0.34549 2011 12 21 55916 0.1496 0.3092 -0.34657 2011 12 22 55917 0.1489 0.3083 -0.34745 2011 12 23 55918 0.1482 0.3074 -0.34817 2011 12 24 55919 0.1475 0.3066 -0.34879 2011 12 25 55920 0.1468 0.3058 -0.34937 2011 12 26 55921 0.1461 0.3050 -0.34997 2011 12 27 55922 0.1454 0.3041 -0.35062 2011 12 28 55923 0.1447 0.3033 -0.35135 2011 12 29 55924 0.1440 0.3026 -0.35217 2011 12 30 55925 0.1432 0.3018 -0.35305 2011 12 31 55926 0.1425 0.3010 -0.35391 2012 1 1 55927 0.1417 0.3003 -0.35473 2012 1 2 55928 0.1410 0.2996 -0.35545 2012 1 3 55929 0.1402 0.2988 -0.35601 2012 1 4 55930 0.1394 0.2981 -0.35640 2012 1 5 55931 0.1387 0.2974 -0.35668 2012 1 6 55932 0.1379 0.2967 -0.35693 2012 1 7 55933 0.1371 0.2961 -0.35714 2012 1 8 55934 0.1363 0.2954 -0.35747 2012 1 9 55935 0.1356 0.2948 -0.35797 2012 1 10 55936 0.1348 0.2941 -0.35862 2012 1 11 55937 0.1340 0.2935 -0.35948 2012 1 12 55938 0.1332 0.2929 -0.36042 2012 1 13 55939 0.1324 0.2923 -0.36145 2012 1 14 55940 0.1316 0.2917 -0.36249 2012 1 15 55941 0.1308 0.2911 -0.36351 2012 1 16 55942 0.1300 0.2906 -0.36447 2012 1 17 55943 0.1291 0.2900 -0.36530 2012 1 18 55944 0.1283 0.2895 -0.36599 2012 1 19 55945 0.1275 0.2890 -0.36655 2012 1 20 55946 0.1267 0.2885 -0.36699 2012 1 21 55947 0.1259 0.2880 -0.36741 2012 1 22 55948 0.1251 0.2875 -0.36787 2012 1 23 55949 0.1243 0.2870 -0.36847 2012 1 24 55950 0.1235 0.2866 -0.36924 2012 1 25 55951 0.1226 0.2861 -0.37014 2012 1 26 55952 0.1218 0.2857 -0.37113 2012 1 27 55953 0.1210 0.2853 -0.37212 2012 1 28 55954 0.1202 0.2849 -0.37303 2012 1 29 55955 0.1194 0.2845 -0.37390 2012 1 30 55956 0.1186 0.2841 -0.37464 2012 1 31 55957 0.1178 0.2837 -0.37523 2012 2 1 55958 0.1170 0.2834 -0.37569 2012 2 2 55959 0.1162 0.2830 -0.37605 2012 2 3 55960 0.1154 0.2827 -0.37637 2012 2 4 55961 0.1146 0.2824 -0.37669 2012 2 5 55962 0.1138 0.2821 -0.37709 2012 2 6 55963 0.1130 0.2818 -0.37762 2012 2 7 55964 0.1122 0.2815 -0.37836 2012 2 8 55965 0.1114 0.2812 -0.37929 2012 2 9 55966 0.1106 0.2810 -0.38048 2012 2 10 55967 0.1099 0.2807 -0.38189 2012 2 11 55968 0.1091 0.2805 -0.38333 2012 2 12 55969 0.1083 0.2803 -0.38470 2012 2 13 55970 0.1075 0.2801 -0.38597 2012 2 14 55971 0.1068 0.2799 -0.38713 2012 2 15 55972 0.1060 0.2797 -0.38819 2012 2 16 55973 0.1053 0.2795 -0.38918 2012 2 17 55974 0.1045 0.2793 -0.39013 2012 2 18 55975 0.1038 0.2792 -0.39114 2012 2 19 55976 0.1031 0.2790 -0.39221 2012 2 20 55977 0.1023 0.2789 -0.39339 2012 2 21 55978 0.1016 0.2788 -0.39465 2012 2 22 55979 0.1009 0.2786 -0.39605 2012 2 23 55980 0.1002 0.2785 -0.39752 2012 2 24 55981 0.0995 0.2784 -0.39901 2012 2 25 55982 0.0988 0.2784 -0.40050 2012 2 26 55983 0.0981 0.2783 -0.40192 2012 2 27 55984 0.0974 0.2782 -0.40324 2012 2 28 55985 0.0967 0.2782 -0.40444 2012 2 29 55986 0.0961 0.2781 -0.40555 2012 3 1 55987 0.0954 0.2781 -0.40666 2012 3 2 55988 0.0947 0.2781 -0.40788 2012 3 3 55989 0.0941 0.2780 -0.40919 2012 3 4 55990 0.0935 0.2780 -0.41054 2012 3 5 55991 0.0928 0.2780 -0.41203 2012 3 6 55992 0.0922 0.2781 -0.41376 2012 3 7 55993 0.0916 0.2781 -0.41575 2012 3 8 55994 0.0910 0.2781 -0.41797 2012 3 9 55995 0.0904 0.2781 -0.42025 2012 3 10 55996 0.0898 0.2782 -0.42247 2012 3 11 55997 0.0892 0.2782 -0.42455 2012 3 12 55998 0.0886 0.2783 -0.42640 2012 3 13 55999 0.0880 0.2784 -0.42799 2012 3 14 56000 0.0875 0.2784 -0.42941 2012 3 15 56001 0.0869 0.2785 -0.43071 2012 3 16 56002 0.0864 0.2786 -0.43200 2012 3 17 56003 0.0859 0.2787 -0.43339 2012 3 18 56004 0.0853 0.2788 -0.43490 2012 3 19 56005 0.0848 0.2789 -0.43650 2012 3 20 56006 0.0843 0.2791 -0.43812 2012 3 21 56007 0.0838 0.2792 -0.43968 2012 3 22 56008 0.0833 0.2793 -0.44113 2012 3 23 56009 0.0828 0.2795 -0.44242 2012 3 24 56010 0.0824 0.2796 -0.44356 2012 3 25 56011 0.0819 0.2798 -0.44461 2012 3 26 56012 0.0815 0.2799 -0.44558 2012 3 27 56013 0.0810 0.2801 -0.44651 2012 3 28 56014 0.0806 0.2802 -0.44746 2012 3 29 56015 0.0801 0.2804 -0.44845 2012 3 30 56016 0.0797 0.2806 -0.44953 2012 3 31 56017 0.0793 0.2808 -0.45076 2012 4 1 56018 0.0789 0.2810 -0.45216 2012 4 2 56019 0.0785 0.2812 -0.45377 2012 4 3 56020 0.0781 0.2814 -0.45553 2012 4 4 56021 0.0778 0.2816 -0.45742 2012 4 5 56022 0.0774 0.2818 -0.45946 2012 4 6 56023 0.0771 0.2820 -0.46156 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) 55639 -66.17 0.38 -9.59 0.18 55640 -66.33 0.19 -9.30 0.16 55641 -66.59 0.19 -9.33 0.16 55642 -66.77 0.74 -9.57 0.34 55643 -66.84 0.74 -9.83 0.14 55644 -66.76 0.74 -10.09 0.14 55645 -66.54 0.74 -10.39 0.14 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 55594 -67.1 -7.0 55595 -67.0 -6.8 55596 -67.0 -6.5 55597 -67.0 -6.5 55598 -66.9 -6.6 55599 -67.0 -6.8 55600 -67.0 -6.9 55601 -66.9 -7.0 55602 -66.8 -7.2 55603 -66.9 -7.6 55604 -67.2 -7.8 55605 -67.4 -7.9 55606 -67.6 -7.8 55607 -67.7 -8.0 55608 -67.5 -8.3 55609 -67.1 -8.5 55610 -66.6 -8.3 55611 -66.4 -7.8 55612 -66.6 -7.5 55613 -67.0 -7.5 55614 -67.2 -7.7 55615 -67.4 -7.9 55616 -67.5 -8.0 55617 -67.6 -8.3 55618 -67.4 -8.5 55619 -67.4 -8.7 55620 -67.3 -8.8 55621 -67.2 -8.8 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55639 -0.108 0.151 -0.457 0.180 55640 -0.101 0.076 -0.486 0.160 55641 -0.094 0.076 -0.456 0.160 55642 -0.106 0.294 -0.410 0.340 55643 -0.128 0.294 -0.392 0.140 55644 -0.136 0.294 -0.401 0.140 55645 -0.135 0.294 -0.412 0.140 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 55594 0.14 -0.28 55595 0.12 -0.27 55596 0.09 -0.12 55597 0.08 -0.13 55598 0.14 -0.09 55599 0.15 -0.12 55600 0.18 -0.11 55601 0.19 -0.13 55602 0.19 -0.16 55603 0.19 -0.30 55604 0.19 -0.33 55605 0.25 -0.45 55606 0.27 -0.45 55607 0.26 -0.55 55608 0.26 -0.52 55609 0.20 -0.50 55610 0.15 -0.47 55611 0.11 -0.42 55612 0.08 -0.45 55613 0.04 -0.44 55614 0.04 -0.43 55615 0.00 -0.38 55616 -0.03 -0.22 55617 -0.09 -0.22 55618 -0.01 -0.16 55619 0.04 -0.24 55620 0.14 -0.33 55621 0.19 -0.36 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.