********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 4 September 2008 Vol. XXI No. 036 ______________________________________________________________________ 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 8 29 54707 .29830 .00009 .32943 .00009 -.462571 .000012 8 8 30 54708 .29844 .00009 .32611 .00009 -.463326 .000003 8 8 31 54709 .29861 .00009 .32237 .00009 -.464282 .000002 8 9 1 54710 .29870 .00009 .31852 .00009 -.465341 .000003 8 9 2 54711 .29892 .00009 .31465 .00009 -.466364 .000037 8 9 3 54712 .29917 .00009 .31085 .00009 -.467276 .000048 8 9 4 54713 .29917 .00009 .30708 .00009 -.467880 .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 = .0778 + .1205 cos A + .0111 sin A + .0980 cos C - .0595 sin C y = .3473 + .0222 cos A - .1072 sin A - .0595 cos C - .0980 sin C UT1-UTC = -.5114 - .00084 (MJD - 54721) - (UT2-UT1) where A = 2*pi*(MJD-54713)/365.25 and C = 2*pi*(MJD-54713)/435. TAI-UTC(MJD 54714) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-54713)**0.80 S t = 0.00025 (MJD-54713)**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 9 5 54714 0.2990 0.3034 -0.46812 2008 9 6 54715 0.2985 0.2998 -0.46820 2008 9 7 54716 0.2978 0.2962 -0.46821 2008 9 8 54717 0.2970 0.2926 -0.46823 2008 9 9 54718 0.2961 0.2889 -0.46828 2008 9 10 54719 0.2951 0.2853 -0.46843 2008 9 11 54720 0.2940 0.2818 -0.46875 2008 9 12 54721 0.2928 0.2782 -0.46927 2008 9 13 54722 0.2916 0.2747 -0.47004 2008 9 14 54723 0.2903 0.2712 -0.47104 2008 9 15 54724 0.2889 0.2677 -0.47220 2008 9 16 54725 0.2875 0.2642 -0.47341 2008 9 17 54726 0.2860 0.2607 -0.47464 2008 9 18 54727 0.2845 0.2573 -0.47577 2008 9 19 54728 0.2829 0.2539 -0.47672 2008 9 20 54729 0.2812 0.2505 -0.47743 2008 9 21 54730 0.2795 0.2472 -0.47798 2008 9 22 54731 0.2777 0.2439 -0.47845 2008 9 23 54732 0.2759 0.2406 -0.47897 2008 9 24 54733 0.2740 0.2373 -0.47965 2008 9 25 54734 0.2720 0.2340 -0.48055 2008 9 26 54735 0.2700 0.2308 -0.48169 2008 9 27 54736 0.2680 0.2276 -0.48303 2008 9 28 54737 0.2659 0.2245 -0.48451 2008 9 29 54738 0.2637 0.2213 -0.48601 2008 9 30 54739 0.2615 0.2182 -0.48742 2008 10 1 54740 0.2593 0.2152 -0.48869 2008 10 2 54741 0.2570 0.2122 -0.48977 2008 10 3 54742 0.2546 0.2092 -0.49066 2008 10 4 54743 0.2522 0.2062 -0.49141 2008 10 5 54744 0.2497 0.2033 -0.49208 2008 10 6 54745 0.2472 0.2004 -0.49273 2008 10 7 54746 0.2447 0.1975 -0.49344 2008 10 8 54747 0.2421 0.1947 -0.49428 2008 10 9 54748 0.2394 0.1920 -0.49529 2008 10 10 54749 0.2367 0.1892 -0.49653 2008 10 11 54750 0.2340 0.1865 -0.49801 2008 10 12 54751 0.2312 0.1839 -0.49970 2008 10 13 54752 0.2284 0.1813 -0.50154 2008 10 14 54753 0.2255 0.1787 -0.50344 2008 10 15 54754 0.2226 0.1762 -0.50526 2008 10 16 54755 0.2197 0.1737 -0.50688 2008 10 17 54756 0.2167 0.1712 -0.50827 2008 10 18 54757 0.2137 0.1688 -0.50943 2008 10 19 54758 0.2106 0.1665 -0.51045 2008 10 20 54759 0.2075 0.1642 -0.51148 2008 10 21 54760 0.2043 0.1619 -0.51263 2008 10 22 54761 0.2011 0.1597 -0.51398 2008 10 23 54762 0.1979 0.1576 -0.51555 2008 10 24 54763 0.1947 0.1554 -0.51730 2008 10 25 54764 0.1914 0.1534 -0.51915 2008 10 26 54765 0.1881 0.1514 -0.52102 2008 10 27 54766 0.1847 0.1494 -0.52281 2008 10 28 54767 0.1813 0.1475 -0.52445 2008 10 29 54768 0.1779 0.1456 -0.52589 2008 10 30 54769 0.1744 0.1438 -0.52713 2008 10 31 54770 0.1710 0.1420 -0.52819 2008 11 1 54771 0.1675 0.1403 -0.52911 2008 11 2 54772 0.1639 0.1387 -0.52997 2008 11 3 54773 0.1604 0.1371 -0.53083 2008 11 4 54774 0.1568 0.1355 -0.53176 2008 11 5 54775 0.1532 0.1340 -0.53283 2008 11 6 54776 0.1495 0.1326 -0.53407 2008 11 7 54777 0.1459 0.1312 -0.53551 2008 11 8 54778 0.1422 0.1299 -0.53716 2008 11 9 54779 0.1385 0.1286 -0.53897 2008 11 10 54780 0.1348 0.1274 -0.54088 2008 11 11 54781 0.1310 0.1262 -0.54277 2008 11 12 54782 0.1273 0.1251 -0.54452 2008 11 13 54783 0.1235 0.1240 -0.54605 2008 11 14 54784 0.1197 0.1230 -0.54732 2008 11 15 54785 0.1159 0.1221 -0.54840 2008 11 16 54786 0.1120 0.1212 -0.54941 2008 11 17 54787 0.1082 0.1204 -0.55048 2008 11 18 54788 0.1044 0.1196 -0.55173 2008 11 19 54789 0.1005 0.1189 -0.55317 2008 11 20 54790 0.0966 0.1183 -0.55480 2008 11 21 54791 0.0927 0.1177 -0.55651 2008 11 22 54792 0.0889 0.1171 -0.55823 2008 11 23 54793 0.0850 0.1167 -0.55985 2008 11 24 54794 0.0810 0.1162 -0.56132 2008 11 25 54795 0.0771 0.1159 -0.56259 2008 11 26 54796 0.0732 0.1156 -0.56363 2008 11 27 54797 0.0693 0.1153 -0.56448 2008 11 28 54798 0.0654 0.1152 -0.56517 2008 11 29 54799 0.0615 0.1150 -0.56575 2008 11 30 54800 0.0575 0.1150 -0.56631 2008 12 1 54801 0.0536 0.1150 -0.56692 2008 12 2 54802 0.0497 0.1150 -0.56763 2008 12 3 54803 0.0458 0.1152 -0.56849 2008 12 4 54804 0.0418 0.1153 -0.56953 2008 12 5 54805 0.0379 0.1156 -0.57075 2008 12 6 54806 0.0340 0.1159 -0.57211 2008 12 7 54807 0.0301 0.1162 -0.57358 2008 12 8 54808 0.0262 0.1166 -0.57506 2008 12 9 54809 0.0223 0.1171 -0.57645 2008 12 10 54810 0.0184 0.1176 -0.57765 2008 12 11 54811 0.0146 0.1182 -0.57860 2008 12 12 54812 0.0107 0.1189 -0.57933 2008 12 13 54813 0.0069 0.1196 -0.57994 2008 12 14 54814 0.0030 0.1203 -0.58056 2008 12 15 54815 -0.0008 0.1212 -0.58132 2008 12 16 54816 -0.0046 0.1220 -0.58230 2008 12 17 54817 -0.0084 0.1230 -0.58349 2008 12 18 54818 -0.0121 0.1240 -0.58481 2008 12 19 54819 -0.0159 0.1250 -0.58614 2008 12 20 54820 -0.0196 0.1261 -0.58739 2008 12 21 54821 -0.0233 0.1273 -0.58848 2008 12 22 54822 -0.0270 0.1285 -0.58946 2008 12 23 54823 -0.0307 0.1298 -0.59023 2008 12 24 54824 -0.0343 0.1311 -0.59080 2008 12 25 54825 -0.0380 0.1325 -0.59122 2008 12 26 54826 -0.0416 0.1340 -0.59155 2008 12 27 54827 -0.0451 0.1355 -0.59184 2008 12 28 54828 -0.0487 0.1370 -0.59217 2008 12 29 54829 -0.0522 0.1386 -0.59261 2008 12 30 54830 -0.0557 0.1403 -0.59320 2008 12 31 54831 -0.0592 0.1420 -0.59397 2009 1 1 54832 -0.0626 0.1438 0.40508 2009 1 2 54833 -0.0660 0.1456 0.40397 2009 1 3 54834 -0.0694 0.1475 0.40277 2009 1 4 54835 -0.0727 0.1494 0.40153 2009 1 5 54836 -0.0760 0.1514 0.40034 2009 1 6 54837 -0.0793 0.1534 0.39929 2009 1 7 54838 -0.0825 0.1555 0.39844 2009 1 8 54839 -0.0858 0.1576 0.39779 2009 1 9 54840 -0.0889 0.1598 0.39727 2009 1 10 54841 -0.0920 0.1620 0.39677 2009 1 11 54842 -0.0951 0.1643 0.39615 2009 1 12 54843 -0.0982 0.1666 0.39530 2009 1 13 54844 -0.1012 0.1689 0.39419 2009 1 14 54845 -0.1042 0.1713 0.39287 2009 1 15 54846 -0.1071 0.1738 0.39145 2009 1 16 54847 -0.1100 0.1763 0.39008 2009 1 17 54848 -0.1128 0.1788 0.38884 2009 1 18 54849 -0.1157 0.1814 0.38781 2009 1 19 54850 -0.1184 0.1840 0.38700 2009 1 20 54851 -0.1211 0.1867 0.38639 2009 1 21 54852 -0.1238 0.1894 0.38595 2009 1 22 54853 -0.1264 0.1922 0.38562 2009 1 23 54854 -0.1290 0.1950 0.38532 2009 1 24 54855 -0.1315 0.1978 0.38500 2009 1 25 54856 -0.1340 0.2007 0.38458 2009 1 26 54857 -0.1364 0.2036 0.38400 2009 1 27 54858 -0.1388 0.2065 0.38323 2009 1 28 54859 -0.1412 0.2095 0.38227 2009 1 29 54860 -0.1435 0.2125 0.38115 2009 1 30 54861 -0.1457 0.2156 0.37990 2009 1 31 54862 -0.1479 0.2187 0.37862 2009 2 1 54863 -0.1500 0.2218 0.37737 2009 2 2 54864 -0.1521 0.2250 0.37624 2009 2 3 54865 -0.1541 0.2281 0.37529 2009 2 4 54866 -0.1561 0.2314 0.37454 2009 2 5 54867 -0.1580 0.2346 0.37392 2009 2 6 54868 -0.1598 0.2379 0.37336 2009 2 7 54869 -0.1617 0.2412 0.37272 2009 2 8 54870 -0.1634 0.2445 0.37188 2009 2 9 54871 -0.1651 0.2479 0.37076 2009 2 10 54872 -0.1667 0.2513 0.36938 2009 2 11 54873 -0.1683 0.2547 0.36782 2009 2 12 54874 -0.1699 0.2581 0.36622 2009 2 13 54875 -0.1713 0.2616 0.36471 2009 2 14 54876 -0.1727 0.2651 0.36338 2009 2 15 54877 -0.1741 0.2686 0.36228 2009 2 16 54878 -0.1754 0.2721 0.36141 2009 2 17 54879 -0.1766 0.2756 0.36072 2009 2 18 54880 -0.1778 0.2792 0.36016 2009 2 19 54881 -0.1789 0.2828 0.35966 2009 2 20 54882 -0.1800 0.2864 0.35915 2009 2 21 54883 -0.1810 0.2900 0.35855 2009 2 22 54884 -0.1819 0.2936 0.35781 2009 2 23 54885 -0.1828 0.2973 0.35689 2009 2 24 54886 -0.1836 0.3009 0.35576 2009 2 25 54887 -0.1843 0.3046 0.35443 2009 2 26 54888 -0.1850 0.3083 0.35296 2009 2 27 54889 -0.1857 0.3120 0.35143 2009 2 28 54890 -0.1862 0.3157 0.34991 2009 3 1 54891 -0.1868 0.3194 0.34851 2009 3 2 54892 -0.1872 0.3231 0.34729 2009 3 3 54893 -0.1876 0.3269 0.34627 2009 3 4 54894 -0.1879 0.3306 0.34542 2009 3 5 54895 -0.1882 0.3344 0.34465 2009 3 6 54896 -0.1884 0.3381 0.34386 2009 3 7 54897 -0.1885 0.3419 0.34291 2009 3 8 54898 -0.1886 0.3456 0.34174 2009 3 9 54899 -0.1886 0.3494 0.34031 2009 3 10 54900 -0.1886 0.3531 0.33869 2009 3 11 54901 -0.1885 0.3569 0.33698 2009 3 12 54902 -0.1883 0.3606 0.33533 2009 3 13 54903 -0.1881 0.3644 0.33386 2009 3 14 54904 -0.1878 0.3681 0.33267 2009 3 15 54905 -0.1874 0.3719 0.33176 2009 3 16 54906 -0.1870 0.3756 0.33111 2009 3 17 54907 -0.1865 0.3794 0.33066 2009 3 18 54908 -0.1860 0.3831 0.33033 2009 3 19 54909 -0.1854 0.3868 0.33003 2009 3 20 54910 -0.1847 0.3905 0.32968 2009 3 21 54911 -0.1840 0.3942 0.32920 2009 3 22 54912 -0.1832 0.3979 0.32857 2009 3 23 54913 -0.1824 0.4016 0.32774 2009 3 24 54914 -0.1815 0.4053 0.32673 2009 3 25 54915 -0.1805 0.4089 0.32556 2009 3 26 54916 -0.1795 0.4126 0.32428 2009 3 27 54917 -0.1784 0.4162 0.32299 2009 3 28 54918 -0.1773 0.4198 0.32177 2009 3 29 54919 -0.1761 0.4234 0.32070 2009 3 30 54920 -0.1748 0.4270 0.31983 2009 3 31 54921 -0.1735 0.4306 0.31913 2009 4 1 54922 -0.1721 0.4341 0.31853 2009 4 2 54923 -0.1707 0.4376 0.31790 2009 4 3 54924 -0.1692 0.4411 0.31713 2009 4 4 54925 -0.1677 0.4446 0.31614 2009 4 5 54926 -0.1661 0.4481 0.31488 2009 4 6 54927 -0.1644 0.4515 0.31339 2009 4 7 54928 -0.1627 0.4549 0.31174 2009 4 8 54929 -0.1610 0.4583 0.31004 2009 4 9 54930 -0.1591 0.4616 0.30840 2009 4 10 54931 -0.1573 0.4650 0.30688 2009 4 11 54932 -0.1553 0.4682 0.30553 2009 4 12 54933 -0.1534 0.4715 0.30438 2009 4 13 54934 -0.1513 0.4748 0.30343 2009 4 14 54935 -0.1492 0.4780 0.30262 2009 4 15 54936 -0.1471 0.4811 0.30190 2009 4 16 54937 -0.1449 0.4843 0.30120 2009 4 17 54938 -0.1427 0.4874 0.30038 2009 4 18 54939 -0.1404 0.4905 0.29938 2009 4 19 54940 -0.1381 0.4935 0.29817 2009 4 20 54941 -0.1357 0.4966 0.29676 2009 4 21 54942 -0.1333 0.4995 0.29518 2009 4 22 54943 -0.1308 0.5025 0.29349 2009 4 23 54944 -0.1283 0.5054 0.29172 2009 4 24 54945 -0.1257 0.5082 0.29000 2009 4 25 54946 -0.1231 0.5111 0.28845 2009 4 26 54947 -0.1204 0.5139 0.28711 2009 4 27 54948 -0.1177 0.5166 0.28594 2009 4 28 54949 -0.1150 0.5193 0.28490 2009 4 29 54950 -0.1122 0.5220 0.28394 2009 4 30 54951 -0.1094 0.5246 0.28295 2009 5 1 54952 -0.1065 0.5272 0.28183 2009 5 2 54953 -0.1036 0.5297 0.28058 2009 5 3 54954 -0.1006 0.5322 0.27918 2009 5 4 54955 -0.0977 0.5347 0.27771 2009 5 5 54956 -0.0946 0.5371 0.27624 2009 5 6 54957 -0.0916 0.5394 0.27489 2009 5 7 54958 -0.0885 0.5417 0.27370 2009 5 8 54959 -0.0853 0.5440 0.27272 2009 5 9 54960 -0.0822 0.5462 0.27196 2009 5 10 54961 -0.0790 0.5484 0.27136 2009 5 11 54962 -0.0757 0.5505 0.27092 2009 5 12 54963 -0.0725 0.5526 0.27062 2009 5 13 54964 -0.0692 0.5546 0.27035 2009 5 14 54965 -0.0658 0.5566 0.27002 2009 5 15 54966 -0.0625 0.5585 0.26959 2009 5 16 54967 -0.0591 0.5604 0.26897 2009 5 17 54968 -0.0557 0.5622 0.26812 2009 5 18 54969 -0.0522 0.5640 0.26708 2009 5 19 54970 -0.0487 0.5657 0.26586 2009 5 20 54971 -0.0452 0.5674 0.26451 2009 5 21 54972 -0.0417 0.5690 0.26317 2009 5 22 54973 -0.0382 0.5706 0.26199 2009 5 23 54974 -0.0346 0.5721 0.26105 2009 5 24 54975 -0.0310 0.5735 0.26040 2009 5 25 54976 -0.0274 0.5749 0.26003 2009 5 26 54977 -0.0238 0.5763 0.25979 2009 5 27 54978 -0.0201 0.5776 0.25951 2009 5 28 54979 -0.0165 0.5788 0.25910 2009 5 29 54980 -0.0128 0.5800 0.25856 2009 5 30 54981 -0.0091 0.5811 0.25785 2009 5 31 54982 -0.0054 0.5822 0.25699 2009 6 1 54983 -0.0017 0.5832 0.25607 2009 6 2 54984 0.0021 0.5842 0.25521 2009 6 3 54985 0.0058 0.5851 0.25452 2009 6 4 54986 0.0096 0.5859 0.25407 2009 6 5 54987 0.0134 0.5867 0.25385 2009 6 6 54988 0.0172 0.5874 0.25380 2009 6 7 54989 0.0210 0.5881 0.25401 2009 6 8 54990 0.0248 0.5887 0.25442 2009 6 9 54991 0.0286 0.5893 0.25488 2009 6 10 54992 0.0324 0.5898 0.25532 2009 6 11 54993 0.0362 0.5902 0.25570 2009 6 12 54994 0.0400 0.5906 0.25598 2009 6 13 54995 0.0439 0.5910 0.25609 2009 6 14 54996 0.0477 0.5912 0.25603 2009 6 15 54997 0.0515 0.5914 0.25586 2009 6 16 54998 0.0553 0.5916 0.25564 2009 6 17 54999 0.0592 0.5917 0.25538 2009 6 18 55000 0.0630 0.5917 0.25514 2009 6 19 55001 0.0668 0.5917 0.25497 2009 6 20 55002 0.0706 0.5916 0.25493 2009 6 21 55003 0.0744 0.5915 0.25502 2009 6 22 55004 0.0782 0.5913 0.25515 2009 6 23 55005 0.0820 0.5911 0.25522 2009 6 24 55006 0.0858 0.5908 0.25515 2009 6 25 55007 0.0896 0.5904 0.25487 2009 6 26 55008 0.0934 0.5900 0.25434 2009 6 27 55009 0.0972 0.5895 0.25367 2009 6 28 55010 0.1009 0.5890 0.25294 2009 6 29 55011 0.1047 0.5884 0.25225 2009 6 30 55012 0.1084 0.5877 0.25170 2009 7 1 55013 0.1121 0.5870 0.25133 2009 7 2 55014 0.1158 0.5863 0.25115 2009 7 3 55015 0.1195 0.5854 0.25118 2009 7 4 55016 0.1231 0.5846 0.25140 2009 7 5 55017 0.1268 0.5836 0.25178 2009 7 6 55018 0.1304 0.5827 0.25229 2009 7 7 55019 0.1340 0.5816 0.25283 2009 7 8 55020 0.1376 0.5805 0.25333 2009 7 9 55021 0.1412 0.5794 0.25376 2009 7 10 55022 0.1447 0.5782 0.25405 2009 7 11 55023 0.1482 0.5769 0.25425 2009 7 12 55024 0.1517 0.5756 0.25442 2009 7 13 55025 0.1552 0.5743 0.25456 2009 7 14 55026 0.1586 0.5728 0.25470 2009 7 15 55027 0.1620 0.5714 0.25488 2009 7 16 55028 0.1654 0.5699 0.25514 2009 7 17 55029 0.1688 0.5683 0.25554 2009 7 18 55030 0.1721 0.5667 0.25612 2009 7 19 55031 0.1754 0.5650 0.25688 2009 7 20 55032 0.1787 0.5633 0.25780 2009 7 21 55033 0.1819 0.5615 0.25869 2009 7 22 55034 0.1851 0.5597 0.25938 2009 7 23 55035 0.1883 0.5578 0.25975 2009 7 24 55036 0.1915 0.5559 0.25986 2009 7 25 55037 0.1946 0.5539 0.25979 2009 7 26 55038 0.1976 0.5519 0.25966 2009 7 27 55039 0.2007 0.5499 0.25960 2009 7 28 55040 0.2037 0.5478 0.25975 2009 7 29 55041 0.2066 0.5456 0.26021 2009 7 30 55042 0.2095 0.5434 0.26092 2009 7 31 55043 0.2124 0.5412 0.26177 2009 8 1 55044 0.2153 0.5389 0.26267 2009 8 2 55045 0.2181 0.5366 0.26360 2009 8 3 55046 0.2208 0.5342 0.26455 2009 8 4 55047 0.2235 0.5318 0.26546 2009 8 5 55048 0.2262 0.5294 0.26618 2009 8 6 55049 0.2288 0.5269 0.26665 2009 8 7 55050 0.2314 0.5243 0.26689 2009 8 8 55051 0.2340 0.5218 0.26695 2009 8 9 55052 0.2365 0.5192 0.26690 2009 8 10 55053 0.2389 0.5165 0.26685 2009 8 11 55054 0.2413 0.5138 0.26683 2009 8 12 55055 0.2437 0.5111 0.26692 2009 8 13 55056 0.2460 0.5083 0.26714 2009 8 14 55057 0.2483 0.5056 0.26749 2009 8 15 55058 0.2505 0.5027 0.26800 2009 8 16 55059 0.2526 0.4999 0.26859 2009 8 17 55060 0.2548 0.4970 0.26920 2009 8 18 55061 0.2568 0.4941 0.26965 2009 8 19 55062 0.2588 0.4911 0.26979 2009 8 20 55063 0.2608 0.4881 0.26961 2009 8 21 55064 0.2627 0.4851 0.26914 2009 8 22 55065 0.2646 0.4821 0.26846 2009 8 23 55066 0.2664 0.4790 0.26776 2009 8 24 55067 0.2682 0.4759 0.26719 2009 8 25 55068 0.2699 0.4728 0.26686 2009 8 26 55069 0.2715 0.4696 0.26674 2009 8 27 55070 0.2731 0.4664 0.26682 2009 8 28 55071 0.2747 0.4632 0.26706 2009 8 29 55072 0.2761 0.4600 0.26736 2009 8 30 55073 0.2776 0.4567 0.26762 2009 8 31 55074 0.2790 0.4535 0.26780 2009 9 1 55075 0.2803 0.4502 0.26794 2009 9 2 55076 0.2816 0.4469 0.26789 2009 9 3 55077 0.2828 0.4435 0.26761 2009 9 4 55078 0.2839 0.4402 0.26713 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) 54693 -69.19 .74 -7.79 .34 54694 -69.21 .74 -7.67 .34 54695 -69.19 .74 -7.62 .34 54696 -69.25 .74 -7.66 .34 54697 -69.47 .74 -7.74 .34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 54693 0.085 0.294 -0.404 0.340 54694 0.098 0.294 -0.423 0.340 54695 0.096 0.294 -0.446 0.340 54696 0.084 0.294 -0.456 0.340 54697 0.068 0.294 -0.455 0.340 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.