********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 29 July 2010 Vol. XXIII No. 030 ______________________________________________________________________ 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 = -0.1 seconds beginning 3 June 2010 at 0000 UTC Beginning 1 January 2009: TAI-UTC(BIPM) = 34.000 000 seconds ********************************************************************** * There will NOT be a leap second introduced * * in UTC on 31 December 2010. * ********************************************************************** ________________________________________________________________________ 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 10 7 23 55400 0.11951 .00010 0.47713 .00009 -0.052630 0.000018 10 7 24 55401 0.12172 .00010 0.47627 .00009 -0.051875 0.000017 10 7 25 55402 0.12380 .00009 0.47496 .00009 -0.051162 0.000017 10 7 26 55403 0.12623 .00010 0.47351 .00009 -0.050601 0.000015 10 7 27 55404 0.12887 .00010 0.47223 .00009 -0.050220 0.000015 10 7 28 55405 0.13128 .00009 0.47124 .00009 -0.049982 0.000014 10 7 29 55406 0.13336 .00010 0.47041 .00009 -0.049878 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 = 0.0954 + 0.0890 cos A + 0.0679 sin A - 0.0597 cos C + 0.0672 sin C y = 0.3407 + 0.0599 cos A - 0.0802 sin A + 0.0672 cos C + 0.0597 sin C UT1-UTC = -0.0525 - 0.00082 (MJD - 55414) - (UT2-UT1) where A = 2*pi*(MJD-55406)/365.25 and C = 2*pi*(MJD-55406)/435. TAI-UTC(MJD 55407) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55406)**0.80 S t = 0.00025 (MJD-55406)**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) 2010 7 30 55407 0.1355 0.4696 -0.04987 2010 7 31 55408 0.1374 0.4688 -0.04985 2010 8 1 55409 0.1393 0.4680 -0.04975 2010 8 2 55410 0.1411 0.4671 -0.04955 2010 8 3 55411 0.1430 0.4663 -0.04925 2010 8 4 55412 0.1449 0.4655 -0.04888 2010 8 5 55413 0.1467 0.4647 -0.04844 2010 8 6 55414 0.1485 0.4638 -0.04797 2010 8 7 55415 0.1503 0.4629 -0.04752 2010 8 8 55416 0.1521 0.4620 -0.04718 2010 8 9 55417 0.1539 0.4611 -0.04705 2010 8 10 55418 0.1556 0.4602 -0.04723 2010 8 11 55419 0.1573 0.4592 -0.04768 2010 8 12 55420 0.1590 0.4582 -0.04827 2010 8 13 55421 0.1607 0.4571 -0.04885 2010 8 14 55422 0.1624 0.4561 -0.04930 2010 8 15 55423 0.1640 0.4550 -0.04953 2010 8 16 55424 0.1656 0.4539 -0.04953 2010 8 17 55425 0.1672 0.4528 -0.04929 2010 8 18 55426 0.1688 0.4516 -0.04888 2010 8 19 55427 0.1703 0.4504 -0.04840 2010 8 20 55428 0.1718 0.4492 -0.04793 2010 8 21 55429 0.1733 0.4480 -0.04753 2010 8 22 55430 0.1748 0.4468 -0.04725 2010 8 23 55431 0.1762 0.4455 -0.04711 2010 8 24 55432 0.1776 0.4442 -0.04713 2010 8 25 55433 0.1790 0.4429 -0.04727 2010 8 26 55434 0.1804 0.4415 -0.04749 2010 8 27 55435 0.1817 0.4402 -0.04774 2010 8 28 55436 0.1830 0.4388 -0.04797 2010 8 29 55437 0.1843 0.4374 -0.04813 2010 8 30 55438 0.1856 0.4360 -0.04819 2010 8 31 55439 0.1868 0.4346 -0.04815 2010 9 1 55440 0.1880 0.4331 -0.04802 2010 9 2 55441 0.1892 0.4316 -0.04785 2010 9 3 55442 0.1903 0.4301 -0.04771 2010 9 4 55443 0.1914 0.4286 -0.04769 2010 9 5 55444 0.1925 0.4271 -0.04789 2010 9 6 55445 0.1935 0.4256 -0.04838 2010 9 7 55446 0.1946 0.4240 -0.04919 2010 9 8 55447 0.1956 0.4224 -0.05026 2010 9 9 55448 0.1965 0.4209 -0.05146 2010 9 10 55449 0.1975 0.4193 -0.05263 2010 9 11 55450 0.1984 0.4176 -0.05364 2010 9 12 55451 0.1992 0.4160 -0.05441 2010 9 13 55452 0.2001 0.4144 -0.05494 2010 9 14 55453 0.2009 0.4127 -0.05530 2010 9 15 55454 0.2017 0.4110 -0.05557 2010 9 16 55455 0.2024 0.4094 -0.05584 2010 9 17 55456 0.2031 0.4077 -0.05617 2010 9 18 55457 0.2038 0.4060 -0.05662 2010 9 19 55458 0.2045 0.4043 -0.05721 2010 9 20 55459 0.2051 0.4025 -0.05794 2010 9 21 55460 0.2057 0.4008 -0.05878 2010 9 22 55461 0.2063 0.3991 -0.05970 2010 9 23 55462 0.2068 0.3973 -0.06065 2010 9 24 55463 0.2073 0.3956 -0.06160 2010 9 25 55464 0.2077 0.3938 -0.06250 2010 9 26 55465 0.2082 0.3920 -0.06331 2010 9 27 55466 0.2086 0.3902 -0.06402 2010 9 28 55467 0.2090 0.3885 -0.06462 2010 9 29 55468 0.2093 0.3867 -0.06515 2010 9 30 55469 0.2096 0.3849 -0.06567 2010 10 1 55470 0.2099 0.3831 -0.06626 2010 10 2 55471 0.2101 0.3813 -0.06700 2010 10 3 55472 0.2103 0.3795 -0.06798 2010 10 4 55473 0.2105 0.3777 -0.06923 2010 10 5 55474 0.2106 0.3759 -0.07074 2010 10 6 55475 0.2108 0.3740 -0.07243 2010 10 7 55476 0.2108 0.3722 -0.07415 2010 10 8 55477 0.2109 0.3704 -0.07575 2010 10 9 55478 0.2109 0.3686 -0.07714 2010 10 10 55479 0.2109 0.3668 -0.07825 2010 10 11 55480 0.2109 0.3650 -0.07913 2010 10 12 55481 0.2108 0.3632 -0.07984 2010 10 13 55482 0.2107 0.3613 -0.08049 2010 10 14 55483 0.2105 0.3595 -0.08115 2010 10 15 55484 0.2104 0.3577 -0.08189 2010 10 16 55485 0.2102 0.3559 -0.08274 2010 10 17 55486 0.2099 0.3541 -0.08371 2010 10 18 55487 0.2097 0.3523 -0.08478 2010 10 19 55488 0.2094 0.3505 -0.08594 2010 10 20 55489 0.2091 0.3488 -0.08715 2010 10 21 55490 0.2087 0.3470 -0.08836 2010 10 22 55491 0.2083 0.3452 -0.08952 2010 10 23 55492 0.2079 0.3434 -0.09059 2010 10 24 55493 0.2075 0.3417 -0.09154 2010 10 25 55494 0.2070 0.3399 -0.09238 2010 10 26 55495 0.2065 0.3382 -0.09313 2010 10 27 55496 0.2060 0.3364 -0.09383 2010 10 28 55497 0.2054 0.3347 -0.09457 2010 10 29 55498 0.2048 0.3330 -0.09542 2010 10 30 55499 0.2042 0.3313 -0.09646 2010 10 31 55500 0.2036 0.3296 -0.09774 2010 11 1 55501 0.2029 0.3279 -0.09925 2010 11 2 55502 0.2022 0.3262 -0.10093 2010 11 3 55503 0.2015 0.3245 -0.10270 2010 11 4 55504 0.2007 0.3228 -0.10441 2010 11 5 55505 0.2000 0.3212 -0.10597 2010 11 6 55506 0.1992 0.3196 -0.10729 2010 11 7 55507 0.1983 0.3179 -0.10837 2010 11 8 55508 0.1975 0.3163 -0.10927 2010 11 9 55509 0.1966 0.3147 -0.11006 2010 11 10 55510 0.1957 0.3132 -0.11084 2010 11 11 55511 0.1948 0.3116 -0.11167 2010 11 12 55512 0.1938 0.3100 -0.11261 2010 11 13 55513 0.1928 0.3085 -0.11365 2010 11 14 55514 0.1918 0.3070 -0.11480 2010 11 15 55515 0.1908 0.3055 -0.11597 2010 11 16 55516 0.1897 0.3040 -0.11719 2010 11 17 55517 0.1887 0.3025 -0.11841 2010 11 18 55518 0.1876 0.3011 -0.11958 2010 11 19 55519 0.1865 0.2996 -0.12066 2010 11 20 55520 0.1853 0.2982 -0.12162 2010 11 21 55521 0.1842 0.2968 -0.12245 2010 11 22 55522 0.1830 0.2954 -0.12318 2010 11 23 55523 0.1818 0.2941 -0.12383 2010 11 24 55524 0.1806 0.2927 -0.12448 2010 11 25 55525 0.1793 0.2914 -0.12520 2010 11 26 55526 0.1781 0.2901 -0.12609 2010 11 27 55527 0.1768 0.2888 -0.12718 2010 11 28 55528 0.1755 0.2875 -0.12847 2010 11 29 55529 0.1742 0.2863 -0.12993 2010 11 30 55530 0.1728 0.2851 -0.13145 2010 12 1 55531 0.1715 0.2839 -0.13295 2010 12 2 55532 0.1701 0.2827 -0.13430 2010 12 3 55533 0.1687 0.2815 -0.13545 2010 12 4 55534 0.1673 0.2804 -0.13637 2010 12 5 55535 0.1659 0.2793 -0.13709 2010 12 6 55536 0.1645 0.2782 -0.13768 2010 12 7 55537 0.1631 0.2771 -0.13823 2010 12 8 55538 0.1616 0.2761 -0.13881 2010 12 9 55539 0.1601 0.2750 -0.13949 2010 12 10 55540 0.1586 0.2740 -0.14028 2010 12 11 55541 0.1571 0.2731 -0.14117 2010 12 12 55542 0.1556 0.2721 -0.14215 2010 12 13 55543 0.1541 0.2712 -0.14318 2010 12 14 55544 0.1526 0.2703 -0.14422 2010 12 15 55545 0.1510 0.2694 -0.14522 2010 12 16 55546 0.1495 0.2685 -0.14615 2010 12 17 55547 0.1479 0.2677 -0.14696 2010 12 18 55548 0.1463 0.2669 -0.14766 2010 12 19 55549 0.1448 0.2661 -0.14824 2010 12 20 55550 0.1432 0.2654 -0.14874 2010 12 21 55551 0.1416 0.2646 -0.14922 2010 12 22 55552 0.1400 0.2639 -0.14976 2010 12 23 55553 0.1383 0.2632 -0.15045 2010 12 24 55554 0.1367 0.2626 -0.15135 2010 12 25 55555 0.1351 0.2619 -0.15246 2010 12 26 55556 0.1335 0.2613 -0.15375 2010 12 27 55557 0.1318 0.2607 -0.15513 2010 12 28 55558 0.1302 0.2602 -0.15647 2010 12 29 55559 0.1285 0.2597 -0.15768 2010 12 30 55560 0.1269 0.2592 -0.15870 2010 12 31 55561 0.1252 0.2587 -0.15949 2011 1 1 55562 0.1236 0.2582 -0.16009 2011 1 2 55563 0.1219 0.2578 -0.16055 2011 1 3 55564 0.1202 0.2574 -0.16096 2011 1 4 55565 0.1186 0.2570 -0.16139 2011 1 5 55566 0.1169 0.2567 -0.16190 2011 1 6 55567 0.1152 0.2564 -0.16252 2011 1 7 55568 0.1136 0.2561 -0.16327 2011 1 8 55569 0.1119 0.2558 -0.16412 2011 1 9 55570 0.1102 0.2556 -0.16504 2011 1 10 55571 0.1086 0.2553 -0.16598 2011 1 11 55572 0.1069 0.2552 -0.16689 2011 1 12 55573 0.1053 0.2550 -0.16775 2011 1 13 55574 0.1036 0.2549 -0.16850 2011 1 14 55575 0.1019 0.2547 -0.16914 2011 1 15 55576 0.1003 0.2547 -0.16967 2011 1 16 55577 0.0987 0.2546 -0.17012 2011 1 17 55578 0.0970 0.2546 -0.17053 2011 1 18 55579 0.0954 0.2546 -0.17098 2011 1 19 55580 0.0937 0.2546 -0.17156 2011 1 20 55581 0.0921 0.2546 -0.17235 2011 1 21 55582 0.0905 0.2547 -0.17340 2011 1 22 55583 0.0889 0.2548 -0.17467 2011 1 23 55584 0.0873 0.2549 -0.17607 2011 1 24 55585 0.0857 0.2550 -0.17749 2011 1 25 55586 0.0841 0.2552 -0.17878 2011 1 26 55587 0.0825 0.2554 -0.17986 2011 1 27 55588 0.0809 0.2556 -0.18070 2011 1 28 55589 0.0794 0.2559 -0.18133 2011 1 29 55590 0.0778 0.2561 -0.18181 2011 1 30 55591 0.0763 0.2564 -0.18221 2011 1 31 55592 0.0748 0.2567 -0.18261 2011 2 1 55593 0.0732 0.2571 -0.18309 2011 2 2 55594 0.0717 0.2575 -0.18369 2011 2 3 55595 0.0702 0.2578 -0.18442 2011 2 4 55596 0.0687 0.2583 -0.18528 2011 2 5 55597 0.0673 0.2587 -0.18625 2011 2 6 55598 0.0658 0.2591 -0.18728 2011 2 7 55599 0.0644 0.2596 -0.18835 2011 2 8 55600 0.0629 0.2601 -0.18942 2011 2 9 55601 0.0615 0.2607 -0.19045 2011 2 10 55602 0.0601 0.2612 -0.19142 2011 2 11 55603 0.0587 0.2618 -0.19231 2011 2 12 55604 0.0573 0.2624 -0.19312 2011 2 13 55605 0.0560 0.2630 -0.19389 2011 2 14 55606 0.0546 0.2636 -0.19466 2011 2 15 55607 0.0533 0.2643 -0.19551 2011 2 16 55608 0.0520 0.2649 -0.19655 2011 2 17 55609 0.0507 0.2656 -0.19782 2011 2 18 55610 0.0494 0.2664 -0.19934 2011 2 19 55611 0.0481 0.2671 -0.20105 2011 2 20 55612 0.0469 0.2679 -0.20282 2011 2 21 55613 0.0457 0.2686 -0.20451 2011 2 22 55614 0.0445 0.2694 -0.20600 2011 2 23 55615 0.0433 0.2702 -0.20721 2011 2 24 55616 0.0421 0.2711 -0.20817 2011 2 25 55617 0.0410 0.2719 -0.20892 2011 2 26 55618 0.0398 0.2728 -0.20956 2011 2 27 55619 0.0387 0.2737 -0.21018 2011 2 28 55620 0.0376 0.2746 -0.21085 2011 3 1 55621 0.0365 0.2755 -0.21163 2011 3 2 55622 0.0355 0.2764 -0.21255 2011 3 3 55623 0.0345 0.2774 -0.21360 2011 3 4 55624 0.0334 0.2784 -0.21478 2011 3 5 55625 0.0324 0.2794 -0.21602 2011 3 6 55626 0.0315 0.2804 -0.21726 2011 3 7 55627 0.0305 0.2814 -0.21845 2011 3 8 55628 0.0296 0.2824 -0.21952 2011 3 9 55629 0.0287 0.2835 -0.22045 2011 3 10 55630 0.0278 0.2845 -0.22125 2011 3 11 55631 0.0269 0.2856 -0.22193 2011 3 12 55632 0.0261 0.2867 -0.22256 2011 3 13 55633 0.0253 0.2878 -0.22318 2011 3 14 55634 0.0245 0.2889 -0.22391 2011 3 15 55635 0.0237 0.2900 -0.22489 2011 3 16 55636 0.0230 0.2912 -0.22616 2011 3 17 55637 0.0222 0.2923 -0.22773 2011 3 18 55638 0.0215 0.2935 -0.22958 2011 3 19 55639 0.0209 0.2946 -0.23165 2011 3 20 55640 0.0202 0.2958 -0.23385 2011 3 21 55641 0.0196 0.2970 -0.23597 2011 3 22 55642 0.0190 0.2982 -0.23788 2011 3 23 55643 0.0184 0.2994 -0.23948 2011 3 24 55644 0.0178 0.3006 -0.24083 2011 3 25 55645 0.0173 0.3019 -0.24202 2011 3 26 55646 0.0167 0.3031 -0.24316 2011 3 27 55647 0.0162 0.3043 -0.24430 2011 3 28 55648 0.0158 0.3056 -0.24546 2011 3 29 55649 0.0153 0.3069 -0.24664 2011 3 30 55650 0.0149 0.3081 -0.24786 2011 3 31 55651 0.0145 0.3094 -0.24909 2011 4 1 55652 0.0141 0.3107 -0.25036 2011 4 2 55653 0.0138 0.3120 -0.25164 2011 4 3 55654 0.0135 0.3133 -0.25292 2011 4 4 55655 0.0132 0.3145 -0.25411 2011 4 5 55656 0.0129 0.3158 -0.25514 2011 4 6 55657 0.0126 0.3171 -0.25607 2011 4 7 55658 0.0124 0.3185 -0.25693 2011 4 8 55659 0.0122 0.3198 -0.25776 2011 4 9 55660 0.0120 0.3211 -0.25853 2011 4 10 55661 0.0119 0.3224 -0.25931 2011 4 11 55662 0.0117 0.3237 -0.26017 2011 4 12 55663 0.0116 0.3250 -0.26121 2011 4 13 55664 0.0115 0.3264 -0.26252 2011 4 14 55665 0.0115 0.3277 -0.26410 2011 4 15 55666 0.0114 0.3290 -0.26589 2011 4 16 55667 0.0114 0.3303 -0.26777 2011 4 17 55668 0.0114 0.3316 -0.26956 2011 4 18 55669 0.0115 0.3330 -0.27118 2011 4 19 55670 0.0115 0.3343 -0.27255 2011 4 20 55671 0.0116 0.3356 -0.27364 2011 4 21 55672 0.0117 0.3369 -0.27445 2011 4 22 55673 0.0118 0.3383 -0.27506 2011 4 23 55674 0.0120 0.3396 -0.27562 2011 4 24 55675 0.0121 0.3409 -0.27626 2011 4 25 55676 0.0123 0.3422 -0.27698 2011 4 26 55677 0.0125 0.3435 -0.27772 2011 4 27 55678 0.0128 0.3448 -0.27851 2011 4 28 55679 0.0130 0.3461 -0.27931 2011 4 29 55680 0.0133 0.3474 -0.28013 2011 4 30 55681 0.0136 0.3487 -0.28094 2011 5 1 55682 0.0139 0.3500 -0.28166 2011 5 2 55683 0.0143 0.3513 -0.28224 2011 5 3 55684 0.0147 0.3525 -0.28267 2011 5 4 55685 0.0150 0.3538 -0.28304 2011 5 5 55686 0.0155 0.3551 -0.28340 2011 5 6 55687 0.0159 0.3563 -0.28375 2011 5 7 55688 0.0163 0.3576 -0.28413 2011 5 8 55689 0.0168 0.3588 -0.28455 2011 5 9 55690 0.0173 0.3600 -0.28506 2011 5 10 55691 0.0178 0.3613 -0.28573 2011 5 11 55692 0.0183 0.3625 -0.28658 2011 5 12 55693 0.0189 0.3637 -0.28764 2011 5 13 55694 0.0194 0.3649 -0.28881 2011 5 14 55695 0.0200 0.3661 -0.29000 2011 5 15 55696 0.0206 0.3673 -0.29111 2011 5 16 55697 0.0213 0.3684 -0.29203 2011 5 17 55698 0.0219 0.3696 -0.29269 2011 5 18 55699 0.0226 0.3708 -0.29312 2011 5 19 55700 0.0232 0.3719 -0.29339 2011 5 20 55701 0.0239 0.3730 -0.29364 2011 5 21 55702 0.0246 0.3742 -0.29399 2011 5 22 55703 0.0254 0.3753 -0.29439 2011 5 23 55704 0.0261 0.3764 -0.29484 2011 5 24 55705 0.0269 0.3774 -0.29533 2011 5 25 55706 0.0276 0.3785 -0.29586 2011 5 26 55707 0.0284 0.3796 -0.29639 2011 5 27 55708 0.0292 0.3806 -0.29688 2011 5 28 55709 0.0300 0.3817 -0.29726 2011 5 29 55710 0.0309 0.3827 -0.29750 2011 5 30 55711 0.0317 0.3837 -0.29760 2011 5 31 55712 0.0326 0.3847 -0.29757 2011 6 1 55713 0.0335 0.3857 -0.29745 2011 6 2 55714 0.0343 0.3866 -0.29734 2011 6 3 55715 0.0352 0.3876 -0.29726 2011 6 4 55716 0.0362 0.3885 -0.29724 2011 6 5 55717 0.0371 0.3894 -0.29734 2011 6 6 55718 0.0380 0.3904 -0.29761 2011 6 7 55719 0.0390 0.3913 -0.29807 2011 6 8 55720 0.0399 0.3921 -0.29875 2011 6 9 55721 0.0409 0.3930 -0.29954 2011 6 10 55722 0.0419 0.3938 -0.30034 2011 6 11 55723 0.0429 0.3947 -0.30109 2011 6 12 55724 0.0439 0.3955 -0.30169 2011 6 13 55725 0.0449 0.3963 -0.30200 2011 6 14 55726 0.0459 0.3971 -0.30199 2011 6 15 55727 0.0470 0.3978 -0.30176 2011 6 16 55728 0.0480 0.3986 -0.30149 2011 6 17 55729 0.0491 0.3993 -0.30128 2011 6 18 55730 0.0501 0.4001 -0.30115 2011 6 19 55731 0.0512 0.4008 -0.30111 2011 6 20 55732 0.0522 0.4014 -0.30113 2011 6 21 55733 0.0533 0.4021 -0.30125 2011 6 22 55734 0.0544 0.4028 -0.30144 2011 6 23 55735 0.0555 0.4034 -0.30159 2011 6 24 55736 0.0566 0.4040 -0.30167 2011 6 25 55737 0.0577 0.4046 -0.30166 2011 6 26 55738 0.0588 0.4052 -0.30153 2011 6 27 55739 0.0599 0.4058 -0.30126 2011 6 28 55740 0.0610 0.4063 -0.30090 2011 6 29 55741 0.0621 0.4068 -0.30050 2011 6 30 55742 0.0633 0.4073 -0.30007 2011 7 1 55743 0.0644 0.4078 -0.29966 2011 7 2 55744 0.0655 0.4083 -0.29937 2011 7 3 55745 0.0667 0.4088 -0.29926 2011 7 4 55746 0.0678 0.4092 -0.29939 2011 7 5 55747 0.0689 0.4096 -0.29974 2011 7 6 55748 0.0701 0.4100 -0.30022 2011 7 7 55749 0.0712 0.4104 -0.30076 2011 7 8 55750 0.0724 0.4108 -0.30121 2011 7 9 55751 0.0735 0.4111 -0.30149 2011 7 10 55752 0.0746 0.4115 -0.30158 2011 7 11 55753 0.0758 0.4118 -0.30146 2011 7 12 55754 0.0769 0.4121 -0.30121 2011 7 13 55755 0.0781 0.4124 -0.30090 2011 7 14 55756 0.0792 0.4126 -0.30063 2011 7 15 55757 0.0803 0.4129 -0.30044 2011 7 16 55758 0.0815 0.4131 -0.30034 2011 7 17 55759 0.0826 0.4133 -0.30032 2011 7 18 55760 0.0837 0.4135 -0.30036 2011 7 19 55761 0.0848 0.4136 -0.30045 2011 7 20 55762 0.0860 0.4138 -0.30051 2011 7 21 55763 0.0871 0.4139 -0.30052 2011 7 22 55764 0.0882 0.4140 -0.30046 2011 7 23 55765 0.0893 0.4141 -0.30029 2011 7 24 55766 0.0904 0.4142 -0.30001 2011 7 25 55767 0.0915 0.4143 -0.29965 2011 7 26 55768 0.0926 0.4143 -0.29918 2011 7 27 55769 0.0937 0.4144 -0.29870 2011 7 28 55770 0.0948 0.4144 -0.29829 2011 7 29 55771 0.0959 0.4144 -0.29799 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) 55387 -70.05 0.28 -9.65 0.34 55388 -69.83 0.19 -9.80 0.34 55389 -69.53 0.19 -9.95 0.34 55390 -69.34 0.74 -9.89 0.10 55391 -69.45 0.27 -9.66 0.34 55392 -69.92 0.27 -9.44 0.34 55393 -70.58 0.27 -9.31 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55387 -0.115 0.111 -0.013 0.340 55388 -0.116 0.076 -0.013 0.340 55389 -0.126 0.076 -0.008 0.340 55390 -0.143 0.294 -0.011 0.100 55391 -0.154 0.107 -0.027 0.340 55392 -0.167 0.107 -0.045 0.340 55393 -0.185 0.107 -0.040 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.