********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 17 July 2008 Vol. XXI No. 029 ______________________________________________________________________ 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 ********************************************************************** * A positive leap second will be introduced in UTC on * * 31 December 2008. * ********************************************************************** ________________________________________________________________________ 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 7 11 54658 .23650 .00009 .47725 .00009 -.449685 .000020 8 7 12 54659 .23884 .00009 .47497 .00009 -.449838 .000021 8 7 13 54660 .24121 .00009 .47247 .00009 -.449781 .000023 8 7 14 54661 .24335 .00009 .46986 .00009 -.449537 .000021 8 7 15 54662 .24539 .00009 .46697 .00009 -.449158 .000015 8 7 16 54663 .24785 .00009 .46408 .00009 -.448721 .000048 8 7 17 54664 .25054 .00009 .46153 .00009 -.448357 .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 = .0642 + .0894 cos A + .0827 sin A + .0887 cos C + .0208 sin C y = .3561 + .0836 cos A - .0758 sin A + .0208 cos C - .0887 sin C UT1-UTC = -.4620 - .00081 (MJD - 54672) - (UT2-UT1) where A = 2*pi*(MJD-54664)/365.25 and C = 2*pi*(MJD-54664)/435. TAI-UTC(MJD 54665) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-54664)**0.80 S t = 0.00025 (MJD-54664)**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 7 18 54665 0.2529 0.4589 -0.44813 2008 7 19 54666 0.2551 0.4564 -0.44809 2008 7 20 54667 0.2571 0.4538 -0.44827 2008 7 21 54668 0.2590 0.4510 -0.44865 2008 7 22 54669 0.2607 0.4482 -0.44922 2008 7 23 54670 0.2624 0.4452 -0.44988 2008 7 24 54671 0.2641 0.4422 -0.45057 2008 7 25 54672 0.2656 0.4392 -0.45118 2008 7 26 54673 0.2671 0.4361 -0.45161 2008 7 27 54674 0.2686 0.4330 -0.45183 2008 7 28 54675 0.2700 0.4299 -0.45185 2008 7 29 54676 0.2714 0.4267 -0.45173 2008 7 30 54677 0.2727 0.4235 -0.45156 2008 7 31 54678 0.2739 0.4203 -0.45149 2008 8 1 54679 0.2751 0.4171 -0.45163 2008 8 2 54680 0.2762 0.4138 -0.45204 2008 8 3 54681 0.2773 0.4106 -0.45268 2008 8 4 54682 0.2783 0.4073 -0.45346 2008 8 5 54683 0.2792 0.4040 -0.45427 2008 8 6 54684 0.2802 0.4007 -0.45501 2008 8 7 54685 0.2810 0.3974 -0.45562 2008 8 8 54686 0.2818 0.3940 -0.45604 2008 8 9 54687 0.2825 0.3907 -0.45628 2008 8 10 54688 0.2832 0.3873 -0.45635 2008 8 11 54689 0.2838 0.3839 -0.45628 2008 8 12 54690 0.2844 0.3805 -0.45616 2008 8 13 54691 0.2849 0.3771 -0.45604 2008 8 14 54692 0.2854 0.3737 -0.45602 2008 8 15 54693 0.2858 0.3703 -0.45616 2008 8 16 54694 0.2861 0.3669 -0.45651 2008 8 17 54695 0.2864 0.3635 -0.45709 2008 8 18 54696 0.2866 0.3601 -0.45788 2008 8 19 54697 0.2868 0.3566 -0.45881 2008 8 20 54698 0.2869 0.3532 -0.45981 2008 8 21 54699 0.2870 0.3497 -0.46074 2008 8 22 54700 0.2870 0.3463 -0.46152 2008 8 23 54701 0.2869 0.3429 -0.46207 2008 8 24 54702 0.2868 0.3394 -0.46239 2008 8 25 54703 0.2866 0.3360 -0.46254 2008 8 26 54704 0.2864 0.3325 -0.46263 2008 8 27 54705 0.2861 0.3291 -0.46281 2008 8 28 54706 0.2858 0.3257 -0.46317 2008 8 29 54707 0.2854 0.3223 -0.46380 2008 8 30 54708 0.2849 0.3188 -0.46469 2008 8 31 54709 0.2844 0.3154 -0.46577 2008 9 1 54710 0.2838 0.3120 -0.46693 2008 9 2 54711 0.2832 0.3086 -0.46806 2008 9 3 54712 0.2825 0.3052 -0.46905 2008 9 4 54713 0.2817 0.3018 -0.46986 2008 9 5 54714 0.2809 0.2985 -0.47046 2008 9 6 54715 0.2801 0.2951 -0.47088 2008 9 7 54716 0.2792 0.2918 -0.47116 2008 9 8 54717 0.2782 0.2884 -0.47135 2008 9 9 54718 0.2772 0.2851 -0.47153 2008 9 10 54719 0.2761 0.2818 -0.47178 2008 9 11 54720 0.2750 0.2785 -0.47217 2008 9 12 54721 0.2738 0.2752 -0.47275 2008 9 13 54722 0.2725 0.2720 -0.47356 2008 9 14 54723 0.2712 0.2688 -0.47460 2008 9 15 54724 0.2699 0.2655 -0.47582 2008 9 16 54725 0.2685 0.2623 -0.47714 2008 9 17 54726 0.2670 0.2592 -0.47843 2008 9 18 54727 0.2655 0.2560 -0.47959 2008 9 19 54728 0.2640 0.2529 -0.48052 2008 9 20 54729 0.2624 0.2498 -0.48121 2008 9 21 54730 0.2607 0.2467 -0.48170 2008 9 22 54731 0.2590 0.2436 -0.48209 2008 9 23 54732 0.2572 0.2406 -0.48252 2008 9 24 54733 0.2554 0.2376 -0.48310 2008 9 25 54734 0.2535 0.2346 -0.48390 2008 9 26 54735 0.2516 0.2316 -0.48494 2008 9 27 54736 0.2496 0.2287 -0.48617 2008 9 28 54737 0.2476 0.2258 -0.48749 2008 9 29 54738 0.2456 0.2230 -0.48882 2008 9 30 54739 0.2435 0.2201 -0.49003 2008 10 1 54740 0.2413 0.2173 -0.49108 2008 10 2 54741 0.2391 0.2145 -0.49191 2008 10 3 54742 0.2368 0.2118 -0.49255 2008 10 4 54743 0.2346 0.2091 -0.49302 2008 10 5 54744 0.2322 0.2064 -0.49338 2008 10 6 54745 0.2298 0.2038 -0.49370 2008 10 7 54746 0.2274 0.2012 -0.49406 2008 10 8 54747 0.2249 0.1986 -0.49453 2008 10 9 54748 0.2224 0.1961 -0.49517 2008 10 10 54749 0.2199 0.1936 -0.49603 2008 10 11 54750 0.2173 0.1912 -0.49712 2008 10 12 54751 0.2146 0.1888 -0.49844 2008 10 13 54752 0.2120 0.1864 -0.49991 2008 10 14 54753 0.2093 0.1841 -0.50143 2008 10 15 54754 0.2065 0.1818 -0.50288 2008 10 16 54755 0.2037 0.1795 -0.50414 2008 10 17 54756 0.2009 0.1773 -0.50516 2008 10 18 54757 0.1980 0.1752 -0.50594 2008 10 19 54758 0.1951 0.1730 -0.50658 2008 10 20 54759 0.1922 0.1710 -0.50722 2008 10 21 54760 0.1892 0.1689 -0.50798 2008 10 22 54761 0.1862 0.1669 -0.50894 2008 10 23 54762 0.1832 0.1650 -0.51012 2008 10 24 54763 0.1801 0.1631 -0.51149 2008 10 25 54764 0.1770 0.1612 -0.51298 2008 10 26 54765 0.1739 0.1594 -0.51449 2008 10 27 54766 0.1708 0.1577 -0.51592 2008 10 28 54767 0.1676 0.1560 -0.51720 2008 10 29 54768 0.1644 0.1543 -0.51829 2008 10 30 54769 0.1611 0.1527 -0.51919 2008 10 31 54770 0.1579 0.1511 -0.51990 2008 11 1 54771 0.1546 0.1496 -0.52049 2008 11 2 54772 0.1513 0.1482 -0.52102 2008 11 3 54773 0.1479 0.1467 -0.52163 2008 11 4 54774 0.1446 0.1454 -0.52233 2008 11 5 54775 0.1412 0.1441 -0.52315 2008 11 6 54776 0.1378 0.1428 -0.52417 2008 11 7 54777 0.1344 0.1416 -0.52539 2008 11 8 54778 0.1309 0.1404 -0.52681 2008 11 9 54779 0.1274 0.1393 -0.52840 2008 11 10 54780 0.1240 0.1383 -0.53007 2008 11 11 54781 0.1205 0.1373 -0.53173 2008 11 12 54782 0.1170 0.1363 -0.53324 2008 11 13 54783 0.1134 0.1354 -0.53452 2008 11 14 54784 0.1099 0.1346 -0.53554 2008 11 15 54785 0.1063 0.1338 -0.53637 2008 11 16 54786 0.1028 0.1330 -0.53713 2008 11 17 54787 0.0992 0.1324 -0.53795 2008 11 18 54788 0.0956 0.1317 -0.53895 2008 11 19 54789 0.0920 0.1312 -0.54016 2008 11 20 54790 0.0884 0.1306 -0.54154 2008 11 21 54791 0.0848 0.1302 -0.54303 2008 11 22 54792 0.0812 0.1298 -0.54452 2008 11 23 54793 0.0775 0.1294 -0.54593 2008 11 24 54794 0.0739 0.1291 -0.54718 2008 11 25 54795 0.0703 0.1289 -0.54825 2008 11 26 54796 0.0666 0.1287 -0.54910 2008 11 27 54797 0.0630 0.1286 -0.54976 2008 11 28 54798 0.0594 0.1285 -0.55028 2008 11 29 54799 0.0557 0.1285 -0.55070 2008 11 30 54800 0.0521 0.1285 -0.55110 2008 12 1 54801 0.0484 0.1286 -0.55155 2008 12 2 54802 0.0448 0.1287 -0.55212 2008 12 3 54803 0.0412 0.1289 -0.55284 2008 12 4 54804 0.0375 0.1292 -0.55373 2008 12 5 54805 0.0339 0.1295 -0.55481 2008 12 6 54806 0.0303 0.1299 -0.55605 2008 12 7 54807 0.0267 0.1303 -0.55739 2008 12 8 54808 0.0231 0.1308 -0.55875 2008 12 9 54809 0.0195 0.1313 -0.56002 2008 12 10 54810 0.0159 0.1319 -0.56110 2008 12 11 54811 0.0123 0.1325 -0.56196 2008 12 12 54812 0.0088 0.1332 -0.56260 2008 12 13 54813 0.0052 0.1340 -0.56313 2008 12 14 54814 0.0017 0.1348 -0.56368 2008 12 15 54815 -0.0019 0.1356 -0.56438 2008 12 16 54816 -0.0054 0.1365 -0.56531 2008 12 17 54817 -0.0088 0.1375 -0.56646 2008 12 18 54818 -0.0123 0.1385 -0.56774 2008 12 19 54819 -0.0158 0.1396 -0.56904 2008 12 20 54820 -0.0192 0.1407 -0.57027 2008 12 21 54821 -0.0226 0.1419 -0.57134 2008 12 22 54822 -0.0260 0.1431 -0.57221 2008 12 23 54823 -0.0294 0.1444 -0.57287 2008 12 24 54824 -0.0328 0.1457 -0.57333 2008 12 25 54825 -0.0361 0.1471 -0.57364 2008 12 26 54826 -0.0394 0.1485 -0.57385 2008 12 27 54827 -0.0427 0.1500 -0.57403 2008 12 28 54828 -0.0459 0.1515 -0.57424 2008 12 29 54829 -0.0492 0.1531 -0.57456 2008 12 30 54830 -0.0524 0.1548 -0.57503 2008 12 31 54831 -0.0555 0.1564 -0.57567 2009 1 1 54832 -0.0587 0.1582 0.42350 2009 1 2 54833 -0.0618 0.1599 0.42253 2009 1 3 54834 -0.0649 0.1618 0.42146 2009 1 4 54835 -0.0679 0.1636 0.42036 2009 1 5 54836 -0.0709 0.1656 0.41932 2009 1 6 54837 -0.0739 0.1675 0.41842 2009 1 7 54838 -0.0769 0.1695 0.41773 2009 1 8 54839 -0.0798 0.1716 0.41724 2009 1 9 54840 -0.0827 0.1737 0.41690 2009 1 10 54841 -0.0855 0.1758 0.41659 2009 1 11 54842 -0.0884 0.1780 0.41616 2009 1 12 54843 -0.0911 0.1802 0.41552 2009 1 13 54844 -0.0939 0.1825 0.41463 2009 1 14 54845 -0.0966 0.1848 0.41355 2009 1 15 54846 -0.0992 0.1872 0.41240 2009 1 16 54847 -0.1018 0.1896 0.41131 2009 1 17 54848 -0.1044 0.1920 0.41038 2009 1 18 54849 -0.1070 0.1945 0.40969 2009 1 19 54850 -0.1095 0.1970 0.40923 2009 1 20 54851 -0.1119 0.1996 0.40901 2009 1 21 54852 -0.1143 0.2022 0.40897 2009 1 22 54853 -0.1167 0.2048 0.40904 2009 1 23 54854 -0.1190 0.2074 0.40915 2009 1 24 54855 -0.1213 0.2101 0.40920 2009 1 25 54856 -0.1235 0.2129 0.40911 2009 1 26 54857 -0.1257 0.2156 0.40880 2009 1 27 54858 -0.1278 0.2185 0.40823 2009 1 28 54859 -0.1299 0.2213 0.40739 2009 1 29 54860 -0.1320 0.2242 0.40632 2009 1 30 54861 -0.1340 0.2271 0.40507 2009 1 31 54862 -0.1359 0.2300 0.40374 2009 2 1 54863 -0.1378 0.2329 0.40244 2009 2 2 54864 -0.1397 0.2359 0.40126 2009 2 3 54865 -0.1415 0.2389 0.40026 2009 2 4 54866 -0.1432 0.2420 0.39948 2009 2 5 54867 -0.1449 0.2451 0.39886 2009 2 6 54868 -0.1466 0.2482 0.39830 2009 2 7 54869 -0.1482 0.2513 0.39768 2009 2 8 54870 -0.1497 0.2544 0.39684 2009 2 9 54871 -0.1512 0.2576 0.39571 2009 2 10 54872 -0.1526 0.2608 0.39430 2009 2 11 54873 -0.1540 0.2640 0.39267 2009 2 12 54874 -0.1553 0.2672 0.39098 2009 2 13 54875 -0.1566 0.2705 0.38935 2009 2 14 54876 -0.1578 0.2738 0.38791 2009 2 15 54877 -0.1590 0.2771 0.38672 2009 2 16 54878 -0.1601 0.2804 0.38581 2009 2 17 54879 -0.1612 0.2837 0.38512 2009 2 18 54880 -0.1622 0.2871 0.38460 2009 2 19 54881 -0.1631 0.2904 0.38416 2009 2 20 54882 -0.1640 0.2938 0.38375 2009 2 21 54883 -0.1648 0.2972 0.38327 2009 2 22 54884 -0.1656 0.3006 0.38266 2009 2 23 54885 -0.1663 0.3040 0.38182 2009 2 24 54886 -0.1670 0.3075 0.38077 2009 2 25 54887 -0.1676 0.3109 0.37951 2009 2 26 54888 -0.1681 0.3143 0.37814 2009 2 27 54889 -0.1686 0.3178 0.37669 2009 2 28 54890 -0.1691 0.3213 0.37523 2009 3 1 54891 -0.1694 0.3247 0.37395 2009 3 2 54892 -0.1698 0.3282 0.37296 2009 3 3 54893 -0.1700 0.3317 0.37218 2009 3 4 54894 -0.1702 0.3352 0.37158 2009 3 5 54895 -0.1704 0.3387 0.37109 2009 3 6 54896 -0.1705 0.3422 0.37060 2009 3 7 54897 -0.1705 0.3457 0.36993 2009 3 8 54898 -0.1705 0.3491 0.36899 2009 3 9 54899 -0.1704 0.3526 0.36779 2009 3 10 54900 -0.1703 0.3561 0.36638 2009 3 11 54901 -0.1701 0.3596 0.36484 2009 3 12 54902 -0.1698 0.3631 0.36326 2009 3 13 54903 -0.1695 0.3666 0.36175 2009 3 14 54904 -0.1691 0.3701 0.36038 2009 3 15 54905 -0.1687 0.3736 0.35917 2009 3 16 54906 -0.1682 0.3770 0.35809 2009 3 17 54907 -0.1677 0.3805 0.35710 2009 3 18 54908 -0.1671 0.3839 0.35617 2009 3 19 54909 -0.1664 0.3874 0.35527 2009 3 20 54910 -0.1657 0.3908 0.35432 2009 3 21 54911 -0.1650 0.3942 0.35328 2009 3 22 54912 -0.1642 0.3977 0.35209 2009 3 23 54913 -0.1633 0.4011 0.35068 2009 3 24 54914 -0.1623 0.4045 0.34905 2009 3 25 54915 -0.1614 0.4078 0.34720 2009 3 26 54916 -0.1603 0.4112 0.34522 2009 3 27 54917 -0.1592 0.4145 0.34322 2009 3 28 54918 -0.1581 0.4179 0.34133 2009 3 29 54919 -0.1569 0.4212 0.33966 2009 3 30 54920 -0.1556 0.4245 0.33830 2009 3 31 54921 -0.1543 0.4277 0.33720 2009 4 1 54922 -0.1529 0.4310 0.33628 2009 4 2 54923 -0.1515 0.4342 0.33542 2009 4 3 54924 -0.1500 0.4374 0.33448 2009 4 4 54925 -0.1485 0.4406 0.33341 2009 4 5 54926 -0.1469 0.4438 0.33221 2009 4 6 54927 -0.1453 0.4469 0.33084 2009 4 7 54928 -0.1437 0.4500 0.32937 2009 4 8 54929 -0.1419 0.4531 0.32788 2009 4 9 54930 -0.1402 0.4562 0.32645 2009 4 10 54931 -0.1383 0.4592 0.32519 2009 4 11 54932 -0.1365 0.4622 0.32416 2009 4 12 54933 -0.1345 0.4652 0.32340 2009 4 13 54934 -0.1326 0.4682 0.32295 2009 4 14 54935 -0.1306 0.4711 0.32269 2009 4 15 54936 -0.1285 0.4740 0.32249 2009 4 16 54937 -0.1264 0.4769 0.32224 2009 4 17 54938 -0.1242 0.4797 0.32190 2009 4 18 54939 -0.1220 0.4825 0.32140 2009 4 19 54940 -0.1198 0.4853 0.32068 2009 4 20 54941 -0.1175 0.4880 0.31974 2009 4 21 54942 -0.1152 0.4907 0.31862 2009 4 22 54943 -0.1128 0.4933 0.31745 2009 4 23 54944 -0.1104 0.4960 0.31625 2009 4 24 54945 -0.1079 0.4986 0.31508 2009 4 25 54946 -0.1054 0.5011 0.31400 2009 4 26 54947 -0.1029 0.5036 0.31311 2009 4 27 54948 -0.1003 0.5061 0.31250 2009 4 28 54949 -0.0977 0.5085 0.31210 2009 4 29 54950 -0.0950 0.5109 0.31172 2009 4 30 54951 -0.0924 0.5133 0.31120 2009 5 1 54952 -0.0896 0.5156 0.31046 2009 5 2 54953 -0.0869 0.5179 0.30949 2009 5 3 54954 -0.0841 0.5201 0.30833 2009 5 4 54955 -0.0812 0.5223 0.30709 2009 5 5 54956 -0.0784 0.5244 0.30584 2009 5 6 54957 -0.0755 0.5265 0.30468 2009 5 7 54958 -0.0725 0.5286 0.30369 2009 5 8 54959 -0.0696 0.5306 0.30290 2009 5 9 54960 -0.0666 0.5326 0.30235 2009 5 10 54961 -0.0635 0.5345 0.30204 2009 5 11 54962 -0.0605 0.5364 0.30196 2009 5 12 54963 -0.0574 0.5382 0.30199 2009 5 13 54964 -0.0543 0.5400 0.30200 2009 5 14 54965 -0.0512 0.5417 0.30192 2009 5 15 54966 -0.0480 0.5434 0.30170 2009 5 16 54967 -0.0448 0.5450 0.30123 2009 5 17 54968 -0.0416 0.5466 0.30054 2009 5 18 54969 -0.0383 0.5482 0.29966 2009 5 19 54970 -0.0351 0.5497 0.29866 2009 5 20 54971 -0.0318 0.5511 0.29757 2009 5 21 54972 -0.0285 0.5525 0.29649 2009 5 22 54973 -0.0252 0.5538 0.29555 2009 5 23 54974 -0.0218 0.5551 0.29480 2009 5 24 54975 -0.0185 0.5564 0.29425 2009 5 25 54976 -0.0151 0.5576 0.29390 2009 5 26 54977 -0.0117 0.5587 0.29375 2009 5 27 54978 -0.0083 0.5598 0.29356 2009 5 28 54979 -0.0049 0.5608 0.29319 2009 5 29 54980 -0.0014 0.5618 0.29258 2009 5 30 54981 0.0020 0.5627 0.29177 2009 5 31 54982 0.0055 0.5636 0.29085 2009 6 1 54983 0.0090 0.5644 0.28991 2009 6 2 54984 0.0125 0.5652 0.28902 2009 6 3 54985 0.0160 0.5659 0.28831 2009 6 4 54986 0.0195 0.5666 0.28782 2009 6 5 54987 0.0230 0.5672 0.28758 2009 6 6 54988 0.0265 0.5678 0.28756 2009 6 7 54989 0.0300 0.5683 0.28771 2009 6 8 54990 0.0336 0.5687 0.28803 2009 6 9 54991 0.0371 0.5691 0.28837 2009 6 10 54992 0.0407 0.5695 0.28863 2009 6 11 54993 0.0442 0.5698 0.28880 2009 6 12 54994 0.0478 0.5700 0.28884 2009 6 13 54995 0.0513 0.5702 0.28872 2009 6 14 54996 0.0548 0.5703 0.28845 2009 6 15 54997 0.0584 0.5704 0.28806 2009 6 16 54998 0.0619 0.5704 0.28757 2009 6 17 54999 0.0655 0.5704 0.28708 2009 6 18 55000 0.0690 0.5703 0.28669 2009 6 19 55001 0.0725 0.5702 0.28651 2009 6 20 55002 0.0761 0.5700 0.28663 2009 6 21 55003 0.0796 0.5697 0.28703 2009 6 22 55004 0.0831 0.5694 0.28761 2009 6 23 55005 0.0866 0.5690 0.28824 2009 6 24 55006 0.0901 0.5686 0.28874 2009 6 25 55007 0.0936 0.5682 0.28901 2009 6 26 55008 0.0971 0.5677 0.28900 2009 6 27 55009 0.1005 0.5671 0.28878 2009 6 28 55010 0.1040 0.5665 0.28842 2009 6 29 55011 0.1074 0.5658 0.28807 2009 6 30 55012 0.1109 0.5651 0.28785 2009 7 1 55013 0.1143 0.5643 0.28786 2009 7 2 55014 0.1177 0.5635 0.28813 2009 7 3 55015 0.1210 0.5626 0.28868 2009 7 4 55016 0.1244 0.5617 0.28948 2009 7 5 55017 0.1277 0.5607 0.29037 2009 7 6 55018 0.1311 0.5596 0.29129 2009 7 7 55019 0.1344 0.5585 0.29214 2009 7 8 55020 0.1376 0.5574 0.29284 2009 7 9 55021 0.1409 0.5562 0.29339 2009 7 10 55022 0.1441 0.5550 0.29378 2009 7 11 55023 0.1474 0.5537 0.29399 2009 7 12 55024 0.1505 0.5524 0.29399 2009 7 13 55025 0.1537 0.5510 0.29386 2009 7 14 55026 0.1568 0.5496 0.29366 2009 7 15 55027 0.1600 0.5481 0.29348 2009 7 16 55028 0.1630 0.5466 0.29341 2009 7 17 55029 0.1661 0.5450 0.29352 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) 54645 -62.11 .31 -8.09 .12 54646 -62.63 .25 -8.03 .14 54647 -63.03 .25 -8.05 .14 54648 -63.12 .48 -8.18 .26 54649 -62.94 .48 -8.26 .26 54650 -62.70 .48 -8.17 .26 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 54645 0.169 0.123 -0.352 0.120 54646 0.162 0.099 -0.346 0.140 54647 0.159 0.099 -0.355 0.140 54648 0.166 0.191 -0.366 0.260 54649 0.178 0.191 -0.376 0.260 54650 0.199 0.191 -0.398 0.260 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.