********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 26 June 2008 Vol. XXI No. 026 ______________________________________________________________________ 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 = -0.4 seconds beginning 13 March 2008 at 0000 UTC Beginning 1 January 2006: TAI-UTC(BIPM) = 33.000 000 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 8 6 20 54637 .18049 .00009 .51589 .00009 -.437895 .000013 8 6 21 54638 .18363 .00009 .51438 .00009 -.437909 .000016 8 6 22 54639 .18699 .00009 .51287 .00009 -.438103 .000014 8 6 23 54640 .19028 .00009 .51136 .00009 -.438536 .000013 8 6 24 54641 .19342 .00009 .50991 .00009 -.439201 .000037 8 6 25 54642 .19649 .00010 .50842 .00009 -.440047 .000048 8 6 26 54643 .19945 .00009 .50709 .00009 -.441022 .000057 _______________________________________________________________________ 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 = .0588 + .0591 cos A + .1122 sin A + .0752 cos C + .0410 sin C y = .3540 + .1073 cos A - .0471 sin A + .0410 cos C - .0752 sin C UT1-UTC = -.4347 - .00079 (MJD - 54651) - (UT2-UT1) where A = 2*pi*(MJD-54643)/365.25 and C = 2*pi*(MJD-54643)/435. TAI-UTC(MJD 54644) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-54643)**0.80 S t = 0.00025 (MJD-54643)**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) 2008 6 27 54644 0.2022 0.5054 -0.44204 2008 6 28 54645 0.2048 0.5038 -0.44298 2008 6 29 54646 0.2073 0.5020 -0.44372 2008 6 30 54647 0.2099 0.5000 -0.44419 2008 7 1 54648 0.2125 0.4980 -0.44441 2008 7 2 54649 0.2150 0.4958 -0.44447 2008 7 3 54650 0.2175 0.4936 -0.44452 2008 7 4 54651 0.2200 0.4913 -0.44469 2008 7 5 54652 0.2224 0.4891 -0.44508 2008 7 6 54653 0.2248 0.4867 -0.44572 2008 7 7 54654 0.2272 0.4844 -0.44652 2008 7 8 54655 0.2294 0.4819 -0.44739 2008 7 9 54656 0.2317 0.4794 -0.44819 2008 7 10 54657 0.2339 0.4769 -0.44884 2008 7 11 54658 0.2361 0.4743 -0.44926 2008 7 12 54659 0.2382 0.4717 -0.44947 2008 7 13 54660 0.2402 0.4691 -0.44947 2008 7 14 54661 0.2423 0.4664 -0.44929 2008 7 15 54662 0.2442 0.4637 -0.44898 2008 7 16 54663 0.2462 0.4609 -0.44862 2008 7 17 54664 0.2481 0.4582 -0.44827 2008 7 18 54665 0.2499 0.4553 -0.44801 2008 7 19 54666 0.2517 0.4525 -0.44792 2008 7 20 54667 0.2534 0.4496 -0.44803 2008 7 21 54668 0.2551 0.4467 -0.44835 2008 7 22 54669 0.2568 0.4438 -0.44885 2008 7 23 54670 0.2584 0.4409 -0.44944 2008 7 24 54671 0.2599 0.4379 -0.45006 2008 7 25 54672 0.2614 0.4349 -0.45058 2008 7 26 54673 0.2628 0.4319 -0.45094 2008 7 27 54674 0.2642 0.4288 -0.45108 2008 7 28 54675 0.2656 0.4257 -0.45102 2008 7 29 54676 0.2669 0.4226 -0.45083 2008 7 30 54677 0.2681 0.4195 -0.45063 2008 7 31 54678 0.2693 0.4164 -0.45054 2008 8 1 54679 0.2704 0.4133 -0.45068 2008 8 2 54680 0.2715 0.4101 -0.45107 2008 8 3 54681 0.2726 0.4069 -0.45168 2008 8 4 54682 0.2735 0.4037 -0.45241 2008 8 5 54683 0.2744 0.4005 -0.45314 2008 8 6 54684 0.2753 0.3973 -0.45377 2008 8 7 54685 0.2761 0.3940 -0.45421 2008 8 8 54686 0.2769 0.3908 -0.45444 2008 8 9 54687 0.2776 0.3875 -0.45446 2008 8 10 54688 0.2783 0.3842 -0.45430 2008 8 11 54689 0.2788 0.3809 -0.45401 2008 8 12 54690 0.2794 0.3776 -0.45365 2008 8 13 54691 0.2799 0.3743 -0.45329 2008 8 14 54692 0.2803 0.3710 -0.45300 2008 8 15 54693 0.2807 0.3677 -0.45286 2008 8 16 54694 0.2810 0.3644 -0.45293 2008 8 17 54695 0.2813 0.3610 -0.45322 2008 8 18 54696 0.2815 0.3577 -0.45373 2008 8 19 54697 0.2816 0.3543 -0.45438 2008 8 20 54698 0.2817 0.3510 -0.45509 2008 8 21 54699 0.2818 0.3476 -0.45575 2008 8 22 54700 0.2817 0.3443 -0.45624 2008 8 23 54701 0.2817 0.3410 -0.45651 2008 8 24 54702 0.2816 0.3376 -0.45657 2008 8 25 54703 0.2814 0.3343 -0.45647 2008 8 26 54704 0.2811 0.3309 -0.45631 2008 8 27 54705 0.2808 0.3276 -0.45622 2008 8 28 54706 0.2805 0.3242 -0.45630 2008 8 29 54707 0.2801 0.3209 -0.45663 2008 8 30 54708 0.2796 0.3176 -0.45719 2008 8 31 54709 0.2791 0.3143 -0.45793 2008 9 1 54710 0.2785 0.3110 -0.45873 2008 9 2 54711 0.2779 0.3077 -0.45948 2008 9 3 54712 0.2772 0.3044 -0.46010 2008 9 4 54713 0.2765 0.3011 -0.46052 2008 9 5 54714 0.2757 0.2978 -0.46074 2008 9 6 54715 0.2748 0.2946 -0.46077 2008 9 7 54716 0.2739 0.2913 -0.46067 2008 9 8 54717 0.2730 0.2881 -0.46049 2008 9 9 54718 0.2720 0.2849 -0.46031 2008 9 10 54719 0.2709 0.2817 -0.46021 2008 9 11 54720 0.2698 0.2785 -0.46027 2008 9 12 54721 0.2686 0.2753 -0.46053 2008 9 13 54722 0.2674 0.2721 -0.46105 2008 9 14 54723 0.2661 0.2690 -0.46182 2008 9 15 54724 0.2648 0.2659 -0.46280 2008 9 16 54725 0.2634 0.2628 -0.46390 2008 9 17 54726 0.2620 0.2597 -0.46499 2008 9 18 54727 0.2605 0.2567 -0.46597 2008 9 19 54728 0.2590 0.2536 -0.46674 2008 9 20 54729 0.2574 0.2506 -0.46727 2008 9 21 54730 0.2558 0.2476 -0.46763 2008 9 22 54731 0.2541 0.2447 -0.46791 2008 9 23 54732 0.2524 0.2417 -0.46823 2008 9 24 54733 0.2506 0.2388 -0.46871 2008 9 25 54734 0.2487 0.2359 -0.46942 2008 9 26 54735 0.2469 0.2331 -0.47038 2008 9 27 54736 0.2449 0.2303 -0.47153 2008 9 28 54737 0.2430 0.2275 -0.47279 2008 9 29 54738 0.2410 0.2247 -0.47406 2008 9 30 54739 0.2389 0.2220 -0.47525 2008 10 1 54740 0.2368 0.2192 -0.47627 2008 10 2 54741 0.2346 0.2166 -0.47710 2008 10 3 54742 0.2324 0.2139 -0.47775 2008 10 4 54743 0.2302 0.2113 -0.47824 2008 10 5 54744 0.2279 0.2087 -0.47864 2008 10 6 54745 0.2256 0.2062 -0.47901 2008 10 7 54746 0.2232 0.2037 -0.47942 2008 10 8 54747 0.2208 0.2012 -0.47995 2008 10 9 54748 0.2183 0.1988 -0.48065 2008 10 10 54749 0.2159 0.1964 -0.48158 2008 10 11 54750 0.2133 0.1940 -0.48274 2008 10 12 54751 0.2108 0.1917 -0.48412 2008 10 13 54752 0.2081 0.1894 -0.48570 2008 10 14 54753 0.2055 0.1872 -0.48733 2008 10 15 54754 0.2028 0.1850 -0.48887 2008 10 16 54755 0.2001 0.1828 -0.49021 2008 10 17 54756 0.1973 0.1807 -0.49130 2008 10 18 54757 0.1945 0.1786 -0.49215 2008 10 19 54758 0.1917 0.1766 -0.49286 2008 10 20 54759 0.1889 0.1746 -0.49355 2008 10 21 54760 0.1860 0.1726 -0.49435 2008 10 22 54761 0.1830 0.1707 -0.49534 2008 10 23 54762 0.1801 0.1688 -0.49656 2008 10 24 54763 0.1771 0.1670 -0.49795 2008 10 25 54764 0.1741 0.1652 -0.49945 2008 10 26 54765 0.1710 0.1635 -0.50096 2008 10 27 54766 0.1680 0.1618 -0.50240 2008 10 28 54767 0.1649 0.1602 -0.50369 2008 10 29 54768 0.1618 0.1586 -0.50479 2008 10 30 54769 0.1586 0.1571 -0.50569 2008 10 31 54770 0.1554 0.1556 -0.50642 2008 11 1 54771 0.1522 0.1541 -0.50701 2008 11 2 54772 0.1490 0.1527 -0.50754 2008 11 3 54773 0.1458 0.1514 -0.50808 2008 11 4 54774 0.1425 0.1501 -0.50869 2008 11 5 54775 0.1392 0.1488 -0.50945 2008 11 6 54776 0.1359 0.1476 -0.51039 2008 11 7 54777 0.1326 0.1465 -0.51154 2008 11 8 54778 0.1292 0.1454 -0.51289 2008 11 9 54779 0.1258 0.1443 -0.51441 2008 11 10 54780 0.1225 0.1433 -0.51603 2008 11 11 54781 0.1191 0.1424 -0.51761 2008 11 12 54782 0.1157 0.1415 -0.51906 2008 11 13 54783 0.1122 0.1407 -0.52027 2008 11 14 54784 0.1088 0.1399 -0.52123 2008 11 15 54785 0.1053 0.1391 -0.52199 2008 11 16 54786 0.1019 0.1385 -0.52268 2008 11 17 54787 0.0984 0.1378 -0.52343 2008 11 18 54788 0.0949 0.1372 -0.52436 2008 11 19 54789 0.0914 0.1367 -0.52549 2008 11 20 54790 0.0879 0.1362 -0.52681 2008 11 21 54791 0.0844 0.1358 -0.52823 2008 11 22 54792 0.0809 0.1355 -0.52965 2008 11 23 54793 0.0774 0.1351 -0.53099 2008 11 24 54794 0.0739 0.1349 -0.53218 2008 11 25 54795 0.0703 0.1347 -0.53317 2008 11 26 54796 0.0668 0.1345 -0.53396 2008 11 27 54797 0.0633 0.1344 -0.53455 2008 11 28 54798 0.0597 0.1344 -0.53500 2008 11 29 54799 0.0562 0.1344 -0.53536 2008 11 30 54800 0.0527 0.1345 -0.53569 2008 12 1 54801 0.0492 0.1346 -0.53608 2008 12 2 54802 0.0456 0.1347 -0.53657 2008 12 3 54803 0.0421 0.1350 -0.53722 2008 12 4 54804 0.0386 0.1352 -0.53805 2008 12 5 54805 0.0351 0.1356 -0.53906 2008 12 6 54806 0.0316 0.1360 -0.54022 2008 12 7 54807 0.0281 0.1364 -0.54148 2008 12 8 54808 0.0246 0.1369 -0.54276 2008 12 9 54809 0.0211 0.1374 -0.54394 2008 12 10 54810 0.0176 0.1380 -0.54494 2008 12 11 54811 0.0142 0.1387 -0.54571 2008 12 12 54812 0.0107 0.1394 -0.54626 2008 12 13 54813 0.0073 0.1401 -0.54670 2008 12 14 54814 0.0039 0.1409 -0.54715 2008 12 15 54815 0.0005 0.1418 -0.54775 2008 12 16 54816 -0.0029 0.1427 -0.54858 2008 12 17 54817 -0.0063 0.1437 -0.54962 2008 12 18 54818 -0.0096 0.1447 -0.55079 2008 12 19 54819 -0.0130 0.1457 -0.55199 2008 12 20 54820 -0.0163 0.1469 -0.55310 2008 12 21 54821 -0.0196 0.1480 -0.55405 2008 12 22 54822 -0.0229 0.1492 -0.55480 2008 12 23 54823 -0.0262 0.1505 -0.55534 2008 12 24 54824 -0.0294 0.1518 -0.55569 2008 12 25 54825 -0.0326 0.1532 -0.55588 2008 12 26 54826 -0.0358 0.1546 -0.55597 2008 12 27 54827 -0.0390 0.1561 -0.55603 2008 12 28 54828 -0.0421 0.1576 -0.55614 2008 12 29 54829 -0.0452 0.1591 -0.55636 2008 12 30 54830 -0.0483 0.1607 -0.55675 2008 12 31 54831 -0.0514 0.1624 -0.55734 2009 1 1 54832 -0.0544 0.1641 -0.55813 2009 1 2 54833 -0.0574 0.1658 -0.55911 2009 1 3 54834 -0.0604 0.1676 -0.56023 2009 1 4 54835 -0.0633 0.1695 -0.56142 2009 1 5 54836 -0.0662 0.1714 -0.56260 2009 1 6 54837 -0.0691 0.1733 -0.56366 2009 1 7 54838 -0.0719 0.1752 -0.56454 2009 1 8 54839 -0.0748 0.1773 -0.56522 2009 1 9 54840 -0.0775 0.1793 -0.56575 2009 1 10 54841 -0.0803 0.1814 -0.56626 2009 1 11 54842 -0.0830 0.1836 -0.56688 2009 1 12 54843 -0.0856 0.1857 -0.56771 2009 1 13 54844 -0.0883 0.1880 -0.56880 2009 1 14 54845 -0.0909 0.1902 -0.57008 2009 1 15 54846 -0.0934 0.1925 -0.57142 2009 1 16 54847 -0.0959 0.1949 -0.57271 2009 1 17 54848 -0.0984 0.1972 -0.57382 2009 1 18 54849 -0.1009 0.1997 -0.57470 2009 1 19 54850 -0.1033 0.2021 -0.57533 2009 1 20 54851 -0.1056 0.2046 -0.57573 2009 1 21 54852 -0.1079 0.2071 -0.57594 2009 1 22 54853 -0.1102 0.2097 -0.57601 2009 1 23 54854 -0.1124 0.2123 -0.57601 2009 1 24 54855 -0.1146 0.2149 -0.57601 2009 1 25 54856 -0.1167 0.2176 -0.57611 2009 1 26 54857 -0.1188 0.2203 -0.57637 2009 1 27 54858 -0.1209 0.2230 -0.57682 2009 1 28 54859 -0.1229 0.2258 -0.57749 2009 1 29 54860 -0.1248 0.2285 -0.57836 2009 1 30 54861 -0.1267 0.2314 -0.57941 2009 1 31 54862 -0.1286 0.2342 -0.58058 2009 2 1 54863 -0.1304 0.2371 -0.58178 2009 2 2 54864 -0.1322 0.2400 -0.58295 2009 2 3 54865 -0.1339 0.2429 -0.58401 2009 2 4 54866 -0.1355 0.2459 -0.58491 2009 2 5 54867 -0.1372 0.2489 -0.58567 2009 2 6 54868 -0.1387 0.2519 -0.58638 2009 2 7 54869 -0.1402 0.2549 -0.58714 2009 2 8 54870 -0.1417 0.2579 -0.58810 2009 2 9 54871 -0.1431 0.2610 -0.58935 2009 2 10 54872 -0.1445 0.2641 -0.59088 2009 2 11 54873 -0.1458 0.2672 -0.59264 2009 2 12 54874 -0.1470 0.2704 -0.59449 2009 2 13 54875 -0.1482 0.2735 -0.59625 2009 2 14 54876 -0.1494 0.2767 -0.59781 2009 2 15 54877 -0.1505 0.2799 -0.59909 2009 2 16 54878 -0.1515 0.2831 -0.60006 2009 2 17 54879 -0.1525 0.2863 -0.60079 2009 2 18 54880 -0.1535 0.2896 -0.60133 2009 2 19 54881 -0.1543 0.2928 -0.60176 2009 2 20 54882 -0.1552 0.2961 -0.60217 2009 2 21 54883 -0.1559 0.2994 -0.60260 2009 2 22 54884 -0.1567 0.3027 -0.60308 2009 2 23 54885 -0.1573 0.3060 -0.60370 2009 2 24 54886 -0.1579 0.3093 -0.60449 2009 2 25 54887 -0.1585 0.3126 -0.60548 2009 2 26 54888 -0.1590 0.3159 -0.60664 2009 2 27 54889 -0.1594 0.3193 -0.60788 2009 2 28 54890 -0.1598 0.3226 -0.60911 2009 3 1 54891 -0.1601 0.3260 -0.61017 2009 3 2 54892 -0.1604 0.3293 -0.61095 2009 3 3 54893 -0.1606 0.3327 -0.61147 2009 3 4 54894 -0.1608 0.3360 -0.61181 2009 3 5 54895 -0.1609 0.3394 -0.61212 2009 3 6 54896 -0.1610 0.3428 -0.61247 2009 3 7 54897 -0.1610 0.3461 -0.61300 2009 3 8 54898 -0.1609 0.3495 -0.61383 2009 3 9 54899 -0.1608 0.3529 -0.61497 2009 3 10 54900 -0.1606 0.3562 -0.61634 2009 3 11 54901 -0.1604 0.3596 -0.61777 2009 3 12 54902 -0.1601 0.3630 -0.61915 2009 3 13 54903 -0.1598 0.3663 -0.62043 2009 3 14 54904 -0.1594 0.3697 -0.62156 2009 3 15 54905 -0.1590 0.3730 -0.62247 2009 3 16 54906 -0.1585 0.3763 -0.62312 2009 3 17 54907 -0.1579 0.3797 -0.62357 2009 3 18 54908 -0.1573 0.3830 -0.62397 2009 3 19 54909 -0.1566 0.3863 -0.62442 2009 3 20 54910 -0.1559 0.3896 -0.62498 2009 3 21 54911 -0.1551 0.3929 -0.62568 2009 3 22 54912 -0.1543 0.3962 -0.62655 2009 3 23 54913 -0.1534 0.3994 -0.62757 2009 3 24 54914 -0.1525 0.4027 -0.62878 2009 3 25 54915 -0.1515 0.4059 -0.63014 2009 3 26 54916 -0.1505 0.4091 -0.63160 2009 3 27 54917 -0.1494 0.4123 -0.63308 2009 3 28 54918 -0.1482 0.4155 -0.63446 2009 3 29 54919 -0.1470 0.4187 -0.63564 2009 3 30 54920 -0.1458 0.4219 -0.63653 2009 3 31 54921 -0.1445 0.4250 -0.63720 2009 4 1 54922 -0.1431 0.4281 -0.63779 2009 4 2 54923 -0.1417 0.4312 -0.63840 2009 4 3 54924 -0.1403 0.4343 -0.63915 2009 4 4 54925 -0.1388 0.4373 -0.64021 2009 4 5 54926 -0.1372 0.4403 -0.64157 2009 4 6 54927 -0.1356 0.4434 -0.64317 2009 4 7 54928 -0.1340 0.4463 -0.64492 2009 4 8 54929 -0.1323 0.4493 -0.64672 2009 4 9 54930 -0.1305 0.4522 -0.64842 2009 4 10 54931 -0.1287 0.4551 -0.64992 2009 4 11 54932 -0.1269 0.4580 -0.65118 2009 4 12 54933 -0.1250 0.4608 -0.65224 2009 4 13 54934 -0.1231 0.4636 -0.65311 2009 4 14 54935 -0.1211 0.4664 -0.65374 2009 4 15 54936 -0.1191 0.4692 -0.65435 2009 4 16 54937 -0.1170 0.4719 -0.65500 2009 4 17 54938 -0.1149 0.4746 -0.65577 2009 4 18 54939 -0.1127 0.4773 -0.65666 2009 4 19 54940 -0.1105 0.4799 -0.65771 2009 4 20 54941 -0.1083 0.4825 -0.65894 2009 4 21 54942 -0.1060 0.4851 -0.66036 2009 4 22 54943 -0.1037 0.4876 -0.66189 2009 4 23 54944 -0.1013 0.4901 -0.66344 2009 4 24 54945 -0.0989 0.4925 -0.66493 2009 4 25 54946 -0.0965 0.4949 -0.66626 2009 4 26 54947 -0.0940 0.4973 -0.66737 2009 4 27 54948 -0.0915 0.4997 -0.66820 2009 4 28 54949 -0.0890 0.5020 -0.66887 2009 4 29 54950 -0.0864 0.5042 -0.66953 2009 4 30 54951 -0.0837 0.5065 -0.67024 2009 5 1 54952 -0.0811 0.5086 -0.67112 2009 5 2 54953 -0.0784 0.5108 -0.67221 2009 5 3 54954 -0.0757 0.5129 -0.67351 2009 5 4 54955 -0.0729 0.5150 -0.67493 2009 5 5 54956 -0.0701 0.5170 -0.67639 2009 5 6 54957 -0.0673 0.5190 -0.67778 2009 5 7 54958 -0.0644 0.5209 -0.67897 2009 5 8 54959 -0.0616 0.5228 -0.67988 2009 5 9 54960 -0.0586 0.5246 -0.68044 2009 5 10 54961 -0.0557 0.5264 -0.68071 2009 5 11 54962 -0.0527 0.5282 -0.68079 2009 5 12 54963 -0.0497 0.5299 -0.68073 2009 5 13 54964 -0.0467 0.5316 -0.68067 2009 5 14 54965 -0.0437 0.5332 -0.68068 2009 5 15 54966 -0.0406 0.5348 -0.68083 2009 5 16 54967 -0.0375 0.5363 -0.68115 2009 5 17 54968 -0.0344 0.5378 -0.68170 2009 5 18 54969 -0.0313 0.5392 -0.68245 2009 5 19 54970 -0.0281 0.5406 -0.68335 2009 5 20 54971 -0.0249 0.5419 -0.68431 2009 5 21 54972 -0.0217 0.5432 -0.68522 2009 5 22 54973 -0.0185 0.5444 -0.68596 2009 5 23 54974 -0.0153 0.5456 -0.68643 2009 5 24 54975 -0.0120 0.5468 -0.68670 2009 5 25 54976 -0.0087 0.5479 -0.68678 2009 5 26 54977 -0.0054 0.5489 -0.68679 2009 5 27 54978 -0.0021 0.5499 -0.68689 2009 5 28 54979 0.0012 0.5508 -0.68715 2009 5 29 54980 0.0045 0.5517 -0.68761 2009 5 30 54981 0.0078 0.5526 -0.68829 2009 5 31 54982 0.0112 0.5533 -0.68919 2009 6 1 54983 0.0145 0.5541 -0.69016 2009 6 2 54984 0.0179 0.5548 -0.69109 2009 6 3 54985 0.0213 0.5554 -0.69187 2009 6 4 54986 0.0247 0.5560 -0.69243 2009 6 5 54987 0.0281 0.5565 -0.69274 2009 6 6 54988 0.0315 0.5570 -0.69284 2009 6 7 54989 0.0349 0.5574 -0.69271 2009 6 8 54990 0.0383 0.5578 -0.69244 2009 6 9 54991 0.0417 0.5581 -0.69215 2009 6 10 54992 0.0451 0.5584 -0.69190 2009 6 11 54993 0.0485 0.5586 -0.69172 2009 6 12 54994 0.0519 0.5588 -0.69163 2009 6 13 54995 0.0554 0.5589 -0.69168 2009 6 14 54996 0.0588 0.5590 -0.69188 2009 6 15 54997 0.0622 0.5590 -0.69224 2009 6 16 54998 0.0656 0.5589 -0.69269 2009 6 17 54999 0.0690 0.5588 -0.69316 2009 6 18 55000 0.0724 0.5587 -0.69358 2009 6 19 55001 0.0758 0.5585 -0.69387 2009 6 20 55002 0.0792 0.5583 -0.69398 2009 6 21 55003 0.0826 0.5580 -0.69392 2009 6 22 55004 0.0860 0.5576 -0.69373 2009 6 23 55005 0.0893 0.5572 -0.69352 2009 6 24 55006 0.0927 0.5568 -0.69345 2009 6 25 55007 0.0960 0.5562 -0.69363 2009 6 26 55008 0.0994 0.5557 -0.69405 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) 54624 -58.33 .36 -8.46 .11 54625 -58.24 .29 -8.45 .23 54626 -58.55 .24 -8.26 .20 54627 -59.23 .15 -7.91 .23 54628 -59.90 .15 -7.65 .23 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 54624 0.199 0.143 -0.307 0.110 54625 0.212 0.115 -0.314 0.230 54626 0.211 0.095 -0.307 0.200 54627 0.201 0.060 -0.262 0.230 54628 0.178 0.060 -0.195 0.230 The IERS Conventions recommended software to predict celestial pole offsets is available at ftp://maia.usno.navy.mil/conventions/chapter5/ ceppred.f and software for the calculation of the dX and dY with respect to IAU2000A Nutation/Precession Theory can be found at the web site in section chapter 5.