********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 21 August 2008 Vol. XXI No. 034 ______________________________________________________________________ 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 15 54693 .29303 .00009 .37340 .00009 -.456622 .000013 8 8 16 54694 .29358 .00009 .37060 .00010 -.456806 .000012 8 8 17 54695 .29420 .00009 .36799 .00009 -.457147 .000013 8 8 18 54696 .29449 .00009 .36507 .00009 -.457706 .000012 8 8 19 54697 .29481 .00009 .36184 .00009 -.458460 .000010 8 8 20 54698 .29537 .00009 .35867 .00009 -.459292 .000009 8 8 21 54699 .29607 .00009 .35561 .00009 -.460072 .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 = .0736 + .1173 cos A + .0301 sin A + .1000 cos C - .0327 sin C y = .3525 + .0391 cos A - .1033 sin A - .0327 cos C - .1000 sin C UT1-UTC = -.5004 - .00083 (MJD - 54707) - (UT2-UT1) where A = 2*pi*(MJD-54699)/365.25 and C = 2*pi*(MJD-54699)/435. TAI-UTC(MJD 54700) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-54699)**0.80 S t = 0.00025 (MJD-54699)**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 8 22 54700 0.2965 0.3525 -0.46067 2008 8 23 54701 0.2968 0.3493 -0.46105 2008 8 24 54702 0.2969 0.3461 -0.46124 2008 8 25 54703 0.2969 0.3427 -0.46131 2008 8 26 54704 0.2968 0.3393 -0.46135 2008 8 27 54705 0.2966 0.3358 -0.46147 2008 8 28 54706 0.2964 0.3323 -0.46175 2008 8 29 54707 0.2961 0.3287 -0.46227 2008 8 30 54708 0.2957 0.3252 -0.46305 2008 8 31 54709 0.2953 0.3216 -0.46402 2008 9 1 54710 0.2948 0.3181 -0.46507 2008 9 2 54711 0.2942 0.3145 -0.46605 2008 9 3 54712 0.2936 0.3110 -0.46690 2008 9 4 54713 0.2929 0.3075 -0.46756 2008 9 5 54714 0.2921 0.3039 -0.46802 2008 9 6 54715 0.2913 0.3004 -0.46832 2008 9 7 54716 0.2904 0.2969 -0.46852 2008 9 8 54717 0.2895 0.2934 -0.46867 2008 9 9 54718 0.2885 0.2899 -0.46885 2008 9 10 54719 0.2874 0.2864 -0.46911 2008 9 11 54720 0.2863 0.2830 -0.46953 2008 9 12 54721 0.2852 0.2795 -0.47017 2008 9 13 54722 0.2839 0.2761 -0.47107 2008 9 14 54723 0.2826 0.2727 -0.47224 2008 9 15 54724 0.2813 0.2693 -0.47362 2008 9 16 54725 0.2799 0.2659 -0.47514 2008 9 17 54726 0.2785 0.2626 -0.47666 2008 9 18 54727 0.2769 0.2593 -0.47805 2008 9 19 54728 0.2754 0.2559 -0.47923 2008 9 20 54729 0.2738 0.2527 -0.48016 2008 9 21 54730 0.2721 0.2494 -0.48089 2008 9 22 54731 0.2704 0.2462 -0.48153 2008 9 23 54732 0.2686 0.2430 -0.48222 2008 9 24 54733 0.2667 0.2398 -0.48305 2008 9 25 54734 0.2649 0.2366 -0.48412 2008 9 26 54735 0.2629 0.2335 -0.48544 2008 9 27 54736 0.2609 0.2304 -0.48696 2008 9 28 54737 0.2589 0.2273 -0.48862 2008 9 29 54738 0.2568 0.2243 -0.49029 2008 9 30 54739 0.2546 0.2212 -0.49187 2008 10 1 54740 0.2525 0.2183 -0.49330 2008 10 2 54741 0.2502 0.2153 -0.49453 2008 10 3 54742 0.2479 0.2124 -0.49556 2008 10 4 54743 0.2456 0.2095 -0.49644 2008 10 5 54744 0.2432 0.2067 -0.49721 2008 10 6 54745 0.2408 0.2039 -0.49794 2008 10 7 54746 0.2383 0.2011 -0.49872 2008 10 8 54747 0.2357 0.1983 -0.49961 2008 10 9 54748 0.2332 0.1956 -0.50066 2008 10 10 54749 0.2306 0.1930 -0.50193 2008 10 11 54750 0.2279 0.1904 -0.50343 2008 10 12 54751 0.2252 0.1878 -0.50515 2008 10 13 54752 0.2224 0.1852 -0.50702 2008 10 14 54753 0.2197 0.1827 -0.50894 2008 10 15 54754 0.2168 0.1803 -0.51076 2008 10 16 54755 0.2140 0.1778 -0.51238 2008 10 17 54756 0.2111 0.1755 -0.51374 2008 10 18 54757 0.2081 0.1731 -0.51487 2008 10 19 54758 0.2051 0.1708 -0.51585 2008 10 20 54759 0.2021 0.1686 -0.51682 2008 10 21 54760 0.1990 0.1664 -0.51792 2008 10 22 54761 0.1959 0.1642 -0.51921 2008 10 23 54762 0.1928 0.1621 -0.52073 2008 10 24 54763 0.1896 0.1601 -0.52243 2008 10 25 54764 0.1864 0.1581 -0.52424 2008 10 26 54765 0.1832 0.1561 -0.52606 2008 10 27 54766 0.1799 0.1542 -0.52780 2008 10 28 54767 0.1767 0.1523 -0.52940 2008 10 29 54768 0.1733 0.1505 -0.53079 2008 10 30 54769 0.1700 0.1487 -0.53197 2008 10 31 54770 0.1666 0.1470 -0.53297 2008 11 1 54771 0.1632 0.1453 -0.53383 2008 11 2 54772 0.1597 0.1437 -0.53462 2008 11 3 54773 0.1563 0.1422 -0.53541 2008 11 4 54774 0.1528 0.1406 -0.53626 2008 11 5 54775 0.1493 0.1392 -0.53723 2008 11 6 54776 0.1457 0.1378 -0.53838 2008 11 7 54777 0.1422 0.1364 -0.53971 2008 11 8 54778 0.1386 0.1351 -0.54123 2008 11 9 54779 0.1350 0.1339 -0.54292 2008 11 10 54780 0.1314 0.1327 -0.54468 2008 11 11 54781 0.1277 0.1315 -0.54642 2008 11 12 54782 0.1241 0.1305 -0.54801 2008 11 13 54783 0.1204 0.1294 -0.54936 2008 11 14 54784 0.1167 0.1285 -0.55045 2008 11 15 54785 0.1130 0.1275 -0.55134 2008 11 16 54786 0.1093 0.1267 -0.55215 2008 11 17 54787 0.1055 0.1259 -0.55303 2008 11 18 54788 0.1018 0.1251 -0.55408 2008 11 19 54789 0.0980 0.1244 -0.55533 2008 11 20 54790 0.0943 0.1238 -0.55675 2008 11 21 54791 0.0905 0.1232 -0.55826 2008 11 22 54792 0.0867 0.1227 -0.55977 2008 11 23 54793 0.0829 0.1222 -0.56119 2008 11 24 54794 0.0791 0.1218 -0.56245 2008 11 25 54795 0.0753 0.1215 -0.56351 2008 11 26 54796 0.0715 0.1212 -0.56436 2008 11 27 54797 0.0677 0.1209 -0.56501 2008 11 28 54798 0.0639 0.1208 -0.56551 2008 11 29 54799 0.0601 0.1206 -0.56592 2008 11 30 54800 0.0562 0.1206 -0.56630 2008 12 1 54801 0.0524 0.1206 -0.56673 2008 12 2 54802 0.0486 0.1206 -0.56728 2008 12 3 54803 0.0448 0.1207 -0.56798 2008 12 4 54804 0.0410 0.1209 -0.56886 2008 12 5 54805 0.0371 0.1211 -0.56992 2008 12 6 54806 0.0333 0.1214 -0.57114 2008 12 7 54807 0.0295 0.1218 -0.57247 2008 12 8 54808 0.0257 0.1222 -0.57393 2008 12 9 54809 0.0220 0.1226 -0.57529 2008 12 10 54810 0.0182 0.1231 -0.57648 2008 12 11 54811 0.0144 0.1237 -0.57743 2008 12 12 54812 0.0107 0.1243 -0.57818 2008 12 13 54813 0.0069 0.1250 -0.57880 2008 12 14 54814 0.0032 0.1258 -0.57945 2008 12 15 54815 -0.0005 0.1266 -0.58025 2008 12 16 54816 -0.0042 0.1274 -0.58128 2008 12 17 54817 -0.0079 0.1283 -0.58252 2008 12 18 54818 -0.0116 0.1293 -0.58391 2008 12 19 54819 -0.0152 0.1303 -0.58531 2008 12 20 54820 -0.0189 0.1314 -0.58664 2008 12 21 54821 -0.0225 0.1325 -0.58781 2008 12 22 54822 -0.0261 0.1337 -0.58878 2008 12 23 54823 -0.0297 0.1350 -0.58955 2008 12 24 54824 -0.0332 0.1363 -0.59012 2008 12 25 54825 -0.0368 0.1376 -0.59054 2008 12 26 54826 -0.0403 0.1390 -0.59086 2008 12 27 54827 -0.0437 0.1405 -0.59114 2008 12 28 54828 -0.0472 0.1420 -0.59147 2008 12 29 54829 -0.0506 0.1435 -0.59190 2008 12 30 54830 -0.0540 0.1452 -0.59248 2008 12 31 54831 -0.0574 0.1468 -0.59325 2009 1 1 54832 -0.0608 0.1485 0.40582 2009 1 2 54833 -0.0641 0.1503 0.40473 2009 1 3 54834 -0.0674 0.1521 0.40353 2009 1 4 54835 -0.0706 0.1540 0.40231 2009 1 5 54836 -0.0738 0.1559 0.40114 2009 1 6 54837 -0.0770 0.1579 0.40011 2009 1 7 54838 -0.0802 0.1599 0.39927 2009 1 8 54839 -0.0833 0.1620 0.39864 2009 1 9 54840 -0.0864 0.1641 0.39815 2009 1 10 54841 -0.0894 0.1663 0.39767 2009 1 11 54842 -0.0924 0.1685 0.39707 2009 1 12 54843 -0.0954 0.1707 0.39624 2009 1 13 54844 -0.0984 0.1730 0.39516 2009 1 14 54845 -0.1013 0.1754 0.39386 2009 1 15 54846 -0.1041 0.1778 0.39248 2009 1 16 54847 -0.1069 0.1802 0.39113 2009 1 17 54848 -0.1097 0.1827 0.38993 2009 1 18 54849 -0.1124 0.1852 0.38893 2009 1 19 54850 -0.1151 0.1878 0.38816 2009 1 20 54851 -0.1178 0.1904 0.38759 2009 1 21 54852 -0.1204 0.1930 0.38718 2009 1 22 54853 -0.1229 0.1957 0.38688 2009 1 23 54854 -0.1254 0.1984 0.38663 2009 1 24 54855 -0.1279 0.2012 0.38635 2009 1 25 54856 -0.1303 0.2040 0.38596 2009 1 26 54857 -0.1327 0.2068 0.38542 2009 1 27 54858 -0.1350 0.2097 0.38470 2009 1 28 54859 -0.1373 0.2126 0.38378 2009 1 29 54860 -0.1395 0.2155 0.38269 2009 1 30 54861 -0.1417 0.2185 0.38149 2009 1 31 54862 -0.1438 0.2215 0.38024 2009 2 1 54863 -0.1459 0.2245 0.37904 2009 2 2 54864 -0.1479 0.2276 0.37796 2009 2 3 54865 -0.1499 0.2307 0.37706 2009 2 4 54866 -0.1518 0.2339 0.37635 2009 2 5 54867 -0.1537 0.2370 0.37579 2009 2 6 54868 -0.1555 0.2402 0.37528 2009 2 7 54869 -0.1573 0.2434 0.37470 2009 2 8 54870 -0.1590 0.2467 0.37391 2009 2 9 54871 -0.1606 0.2500 0.37286 2009 2 10 54872 -0.1622 0.2533 0.37154 2009 2 11 54873 -0.1638 0.2566 0.37005 2009 2 12 54874 -0.1653 0.2600 0.36852 2009 2 13 54875 -0.1667 0.2633 0.36709 2009 2 14 54876 -0.1681 0.2667 0.36583 2009 2 15 54877 -0.1694 0.2701 0.36481 2009 2 16 54878 -0.1706 0.2736 0.36402 2009 2 17 54879 -0.1718 0.2770 0.36341 2009 2 18 54880 -0.1730 0.2805 0.36294 2009 2 19 54881 -0.1741 0.2840 0.36255 2009 2 20 54882 -0.1751 0.2875 0.36216 2009 2 21 54883 -0.1761 0.2911 0.36170 2009 2 22 54884 -0.1770 0.2946 0.36112 2009 2 23 54885 -0.1778 0.2982 0.36039 2009 2 24 54886 -0.1786 0.3017 0.35949 2009 2 25 54887 -0.1794 0.3053 0.35845 2009 2 26 54888 -0.1801 0.3089 0.35733 2009 2 27 54889 -0.1807 0.3125 0.35619 2009 2 28 54890 -0.1812 0.3161 0.35514 2009 3 1 54891 -0.1817 0.3198 0.35425 2009 3 2 54892 -0.1822 0.3234 0.35357 2009 3 3 54893 -0.1826 0.3270 0.35310 2009 3 4 54894 -0.1829 0.3307 0.35279 2009 3 5 54895 -0.1831 0.3343 0.35256 2009 3 6 54896 -0.1833 0.3380 0.35227 2009 3 7 54897 -0.1835 0.3417 0.35181 2009 3 8 54898 -0.1835 0.3453 0.35108 2009 3 9 54899 -0.1836 0.3490 0.35003 2009 3 10 54900 -0.1835 0.3527 0.34872 2009 3 11 54901 -0.1834 0.3563 0.34724 2009 3 12 54902 -0.1832 0.3600 0.34573 2009 3 13 54903 -0.1830 0.3637 0.34429 2009 3 14 54904 -0.1827 0.3673 0.34300 2009 3 15 54905 -0.1824 0.3710 0.34190 2009 3 16 54906 -0.1820 0.3746 0.34096 2009 3 17 54907 -0.1815 0.3783 0.34014 2009 3 18 54908 -0.1810 0.3819 0.33938 2009 3 19 54909 -0.1804 0.3856 0.33863 2009 3 20 54910 -0.1798 0.3892 0.33781 2009 3 21 54911 -0.1791 0.3928 0.33686 2009 3 22 54912 -0.1783 0.3964 0.33573 2009 3 23 54913 -0.1775 0.4000 0.33437 2009 3 24 54914 -0.1766 0.4036 0.33280 2009 3 25 54915 -0.1757 0.4072 0.33104 2009 3 26 54916 -0.1747 0.4107 0.32917 2009 3 27 54917 -0.1736 0.4143 0.32729 2009 3 28 54918 -0.1725 0.4178 0.32549 2009 3 29 54919 -0.1714 0.4213 0.32386 2009 3 30 54920 -0.1701 0.4248 0.32240 2009 3 31 54921 -0.1689 0.4283 0.32112 2009 4 1 54922 -0.1675 0.4317 0.31996 2009 4 2 54923 -0.1661 0.4352 0.31884 2009 4 3 54924 -0.1647 0.4386 0.31766 2009 4 4 54925 -0.1632 0.4420 0.31636 2009 4 5 54926 -0.1616 0.4453 0.31486 2009 4 6 54927 -0.1600 0.4487 0.31319 2009 4 7 54928 -0.1584 0.4520 0.31143 2009 4 8 54929 -0.1566 0.4553 0.30967 2009 4 9 54930 -0.1549 0.4586 0.30801 2009 4 10 54931 -0.1530 0.4619 0.30652 2009 4 11 54932 -0.1512 0.4651 0.30525 2009 4 12 54933 -0.1492 0.4683 0.30417 2009 4 13 54934 -0.1473 0.4714 0.30327 2009 4 14 54935 -0.1452 0.4746 0.30255 2009 4 15 54936 -0.1432 0.4777 0.30191 2009 4 16 54937 -0.1410 0.4808 0.30124 2009 4 17 54938 -0.1389 0.4838 0.30049 2009 4 18 54939 -0.1366 0.4868 0.29957 2009 4 19 54940 -0.1344 0.4898 0.29841 2009 4 20 54941 -0.1320 0.4927 0.29701 2009 4 21 54942 -0.1297 0.4956 0.29540 2009 4 22 54943 -0.1273 0.4985 0.29361 2009 4 23 54944 -0.1248 0.5014 0.29177 2009 4 24 54945 -0.1223 0.5042 0.29002 2009 4 25 54946 -0.1197 0.5069 0.28848 2009 4 26 54947 -0.1172 0.5096 0.28723 2009 4 27 54948 -0.1145 0.5123 0.28627 2009 4 28 54949 -0.1119 0.5150 0.28551 2009 4 29 54950 -0.1091 0.5176 0.28480 2009 4 30 54951 -0.1064 0.5201 0.28404 2009 5 1 54952 -0.1036 0.5227 0.28319 2009 5 2 54953 -0.1007 0.5252 0.28216 2009 5 3 54954 -0.0979 0.5276 0.28092 2009 5 4 54955 -0.0950 0.5300 0.27952 2009 5 5 54956 -0.0920 0.5323 0.27808 2009 5 6 54957 -0.0890 0.5346 0.27672 2009 5 7 54958 -0.0860 0.5369 0.27555 2009 5 8 54959 -0.0830 0.5391 0.27459 2009 5 9 54960 -0.0799 0.5413 0.27383 2009 5 10 54961 -0.0767 0.5434 0.27336 2009 5 11 54962 -0.0736 0.5455 0.27315 2009 5 12 54963 -0.0704 0.5475 0.27304 2009 5 13 54964 -0.0672 0.5495 0.27297 2009 5 14 54965 -0.0639 0.5515 0.27287 2009 5 15 54966 -0.0607 0.5533 0.27270 2009 5 16 54967 -0.0574 0.5552 0.27237 2009 5 17 54968 -0.0540 0.5570 0.27185 2009 5 18 54969 -0.0507 0.5587 0.27119 2009 5 19 54970 -0.0473 0.5604 0.27043 2009 5 20 54971 -0.0439 0.5620 0.26959 2009 5 21 54972 -0.0405 0.5636 0.26870 2009 5 22 54973 -0.0370 0.5651 0.26786 2009 5 23 54974 -0.0335 0.5666 0.26714 2009 5 24 54975 -0.0300 0.5680 0.26657 2009 5 25 54976 -0.0265 0.5694 0.26610 2009 5 26 54977 -0.0230 0.5707 0.26568 2009 5 27 54978 -0.0194 0.5720 0.26520 2009 5 28 54979 -0.0159 0.5732 0.26458 2009 5 29 54980 -0.0123 0.5744 0.26376 2009 5 30 54981 -0.0087 0.5755 0.26278 2009 5 31 54982 -0.0050 0.5765 0.26167 2009 6 1 54983 -0.0014 0.5775 0.26052 2009 6 2 54984 0.0022 0.5785 0.25943 2009 6 3 54985 0.0059 0.5794 0.25846 2009 6 4 54986 0.0096 0.5802 0.25766 2009 6 5 54987 0.0132 0.5810 0.25708 2009 6 6 54988 0.0169 0.5817 0.25674 2009 6 7 54989 0.0206 0.5823 0.25662 2009 6 8 54990 0.0243 0.5829 0.25670 2009 6 9 54991 0.0281 0.5835 0.25686 2009 6 10 54992 0.0318 0.5840 0.25705 2009 6 11 54993 0.0355 0.5844 0.25720 2009 6 12 54994 0.0392 0.5848 0.25725 2009 6 13 54995 0.0429 0.5851 0.25721 2009 6 14 54996 0.0467 0.5854 0.25713 2009 6 15 54997 0.0504 0.5856 0.25698 2009 6 16 54998 0.0541 0.5858 0.25679 2009 6 17 54999 0.0579 0.5859 0.25659 2009 6 18 55000 0.0616 0.5859 0.25643 2009 6 19 55001 0.0653 0.5859 0.25640 2009 6 20 55002 0.0690 0.5858 0.25657 2009 6 21 55003 0.0728 0.5857 0.25698 2009 6 22 55004 0.0765 0.5855 0.25763 2009 6 23 55005 0.0802 0.5853 0.25837 2009 6 24 55006 0.0839 0.5850 0.25899 2009 6 25 55007 0.0876 0.5846 0.25935 2009 6 26 55008 0.0912 0.5842 0.25945 2009 6 27 55009 0.0949 0.5838 0.25936 2009 6 28 55010 0.0986 0.5833 0.25915 2009 6 29 55011 0.1022 0.5827 0.25895 2009 6 30 55012 0.1059 0.5821 0.25891 2009 7 1 55013 0.1095 0.5814 0.25915 2009 7 2 55014 0.1131 0.5806 0.25964 2009 7 3 55015 0.1167 0.5798 0.26032 2009 7 4 55016 0.1202 0.5790 0.26111 2009 7 5 55017 0.1238 0.5781 0.26199 2009 7 6 55018 0.1273 0.5771 0.26296 2009 7 7 55019 0.1308 0.5761 0.26394 2009 7 8 55020 0.1343 0.5751 0.26479 2009 7 9 55021 0.1378 0.5739 0.26543 2009 7 10 55022 0.1413 0.5728 0.26586 2009 7 11 55023 0.1447 0.5716 0.26610 2009 7 12 55024 0.1481 0.5703 0.26622 2009 7 13 55025 0.1515 0.5690 0.26629 2009 7 14 55026 0.1548 0.5676 0.26635 2009 7 15 55027 0.1582 0.5661 0.26646 2009 7 16 55028 0.1615 0.5647 0.26669 2009 7 17 55029 0.1648 0.5631 0.26706 2009 7 18 55030 0.1680 0.5616 0.26761 2009 7 19 55031 0.1712 0.5599 0.26833 2009 7 20 55032 0.1744 0.5583 0.26916 2009 7 21 55033 0.1776 0.5565 0.26992 2009 7 22 55034 0.1807 0.5548 0.27044 2009 7 23 55035 0.1838 0.5529 0.27065 2009 7 24 55036 0.1869 0.5511 0.27056 2009 7 25 55037 0.1899 0.5492 0.27022 2009 7 26 55038 0.1929 0.5472 0.26980 2009 7 27 55039 0.1958 0.5452 0.26947 2009 7 28 55040 0.1988 0.5431 0.26934 2009 7 29 55041 0.2016 0.5410 0.26943 2009 7 30 55042 0.2045 0.5389 0.26975 2009 7 31 55043 0.2073 0.5367 0.27027 2009 8 1 55044 0.2101 0.5345 0.27091 2009 8 2 55045 0.2128 0.5322 0.27157 2009 8 3 55046 0.2155 0.5299 0.27220 2009 8 4 55047 0.2181 0.5276 0.27284 2009 8 5 55048 0.2207 0.5252 0.27331 2009 8 6 55049 0.2233 0.5227 0.27358 2009 8 7 55050 0.2258 0.5203 0.27364 2009 8 8 55051 0.2283 0.5178 0.27354 2009 8 9 55052 0.2307 0.5152 0.27336 2009 8 10 55053 0.2331 0.5126 0.27312 2009 8 11 55054 0.2355 0.5100 0.27288 2009 8 12 55055 0.2378 0.5074 0.27274 2009 8 13 55056 0.2400 0.5047 0.27275 2009 8 14 55057 0.2422 0.5020 0.27292 2009 8 15 55058 0.2444 0.4992 0.27324 2009 8 16 55059 0.2465 0.4964 0.27361 2009 8 17 55060 0.2486 0.4936 0.27400 2009 8 18 55061 0.2506 0.4907 0.27419 2009 8 19 55062 0.2526 0.4878 0.27407 2009 8 20 55063 0.2545 0.4849 0.27366 2009 8 21 55064 0.2563 0.4820 0.27300 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) 54680 -66.99 .11 -7.79 .34 54681 -66.99 .15 -7.75 .34 54682 -67.19 .15 -7.77 .34 54683 -67.77 .18 -7.76 .34 54684 -68.58 .67 -7.76 .34 54685 -69.19 .67 -7.83 .34 54686 -69.34 .67 -7.92 .34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 54680 0.176 0.044 -0.411 0.340 54681 0.155 0.060 -0.383 0.340 54682 0.127 0.060 -0.376 0.340 54683 0.109 0.072 -0.349 0.340 54684 0.095 0.267 -0.306 0.340 54685 0.083 0.267 -0.288 0.340 54686 0.079 0.267 -0.320 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.