********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 30 October 2008 Vol. XXI No. 044 ______________________________________________________________________ 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 = -0.5 seconds beginning 07 August 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 10 24 54763 .20499 .00009 .16487 .00009 -.515308 .000009 8 10 25 54764 .20122 .00009 .16250 .00009 -.516978 .000009 8 10 26 54765 .19780 .00009 .15994 .00009 -.518630 .000011 8 10 27 54766 .19527 .00010 .15788 .00009 -.520219 .000011 8 10 28 54767 .19327 .00009 .15665 .00009 -.521695 .000012 8 10 29 54768 .19114 .00009 .15572 .00009 -.522997 .000048 8 10 30 54769 .18847 .00009 .15439 .00009 -.524052 .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 = .0669 + .0917 cos A - .0636 sin A + .0320 cos C - .1427 sin C y = .3434 - .0492 cos A - .0875 sin A - .1427 cos C - .0320 sin C UT1-UTC = -.5556 - .00089 (MJD - 54777) - (UT2-UT1) where A = 2*pi*(MJD-54769)/365.25 and C = 2*pi*(MJD-54769)/435. TAI-UTC(MJD 54770) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-54769)**0.80 S t = 0.00025 (MJD-54769)**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 10 31 54770 0.1856 0.1531 -0.52489 2008 11 1 54771 0.1824 0.1514 -0.52559 2008 11 2 54772 0.1790 0.1497 -0.52624 2008 11 3 54773 0.1756 0.1479 -0.52689 2008 11 4 54774 0.1723 0.1463 -0.52761 2008 11 5 54775 0.1690 0.1447 -0.52845 2008 11 6 54776 0.1656 0.1432 -0.52946 2008 11 7 54777 0.1622 0.1418 -0.53068 2008 11 8 54778 0.1588 0.1404 -0.53209 2008 11 9 54779 0.1554 0.1391 -0.53368 2008 11 10 54780 0.1519 0.1378 -0.53539 2008 11 11 54781 0.1483 0.1365 -0.53707 2008 11 12 54782 0.1447 0.1353 -0.53864 2008 11 13 54783 0.1411 0.1341 -0.53999 2008 11 14 54784 0.1375 0.1330 -0.54109 2008 11 15 54785 0.1338 0.1319 -0.54201 2008 11 16 54786 0.1301 0.1309 -0.54287 2008 11 17 54787 0.1264 0.1299 -0.54382 2008 11 18 54788 0.1227 0.1290 -0.54495 2008 11 19 54789 0.1190 0.1282 -0.54627 2008 11 20 54790 0.1152 0.1274 -0.54774 2008 11 21 54791 0.1114 0.1266 -0.54930 2008 11 22 54792 0.1076 0.1259 -0.55084 2008 11 23 54793 0.1038 0.1253 -0.55228 2008 11 24 54794 0.1000 0.1247 -0.55356 2008 11 25 54795 0.0962 0.1242 -0.55465 2008 11 26 54796 0.0924 0.1237 -0.55554 2008 11 27 54797 0.0885 0.1233 -0.55625 2008 11 28 54798 0.0847 0.1230 -0.55682 2008 11 29 54799 0.0808 0.1227 -0.55730 2008 11 30 54800 0.0770 0.1224 -0.55776 2008 12 1 54801 0.0731 0.1222 -0.55830 2008 12 2 54802 0.0693 0.1221 -0.55897 2008 12 3 54803 0.0654 0.1221 -0.55982 2008 12 4 54804 0.0615 0.1220 -0.56087 2008 12 5 54805 0.0577 0.1221 -0.56212 2008 12 6 54806 0.0538 0.1222 -0.56353 2008 12 7 54807 0.0500 0.1224 -0.56505 2008 12 8 54808 0.0461 0.1226 -0.56658 2008 12 9 54809 0.0422 0.1229 -0.56803 2008 12 10 54810 0.0384 0.1232 -0.56930 2008 12 11 54811 0.0346 0.1236 -0.57034 2008 12 12 54812 0.0307 0.1241 -0.57116 2008 12 13 54813 0.0269 0.1246 -0.57187 2008 12 14 54814 0.0231 0.1252 -0.57260 2008 12 15 54815 0.0193 0.1258 -0.57349 2008 12 16 54816 0.0155 0.1265 -0.57460 2008 12 17 54817 0.0117 0.1273 -0.57593 2008 12 18 54818 0.0080 0.1281 -0.57740 2008 12 19 54819 0.0042 0.1289 -0.57888 2008 12 20 54820 0.0005 0.1298 -0.58029 2008 12 21 54821 -0.0033 0.1308 -0.58155 2008 12 22 54822 -0.0070 0.1318 -0.58262 2008 12 23 54823 -0.0106 0.1329 -0.58348 2008 12 24 54824 -0.0143 0.1341 -0.58415 2008 12 25 54825 -0.0179 0.1353 -0.58468 2008 12 26 54826 -0.0216 0.1365 -0.58511 2008 12 27 54827 -0.0252 0.1378 -0.58552 2008 12 28 54828 -0.0288 0.1392 -0.58598 2008 12 29 54829 -0.0323 0.1406 -0.58655 2008 12 30 54830 -0.0358 0.1421 -0.58729 2008 12 31 54831 -0.0393 0.1436 -0.58821 2009 1 1 54832 -0.0428 0.1452 0.41068 2009 1 2 54833 -0.0463 0.1468 0.40942 2009 1 3 54834 -0.0497 0.1485 0.40806 2009 1 4 54835 -0.0531 0.1502 0.40666 2009 1 5 54836 -0.0564 0.1520 0.40532 2009 1 6 54837 -0.0598 0.1538 0.40411 2009 1 7 54838 -0.0631 0.1557 0.40309 2009 1 8 54839 -0.0663 0.1577 0.40227 2009 1 9 54840 -0.0696 0.1596 0.40158 2009 1 10 54841 -0.0728 0.1617 0.40089 2009 1 11 54842 -0.0759 0.1638 0.40008 2009 1 12 54843 -0.0791 0.1659 0.39903 2009 1 13 54844 -0.0822 0.1681 0.39771 2009 1 14 54845 -0.0852 0.1703 0.39618 2009 1 15 54846 -0.0882 0.1726 0.39456 2009 1 16 54847 -0.0912 0.1749 0.39297 2009 1 17 54848 -0.0942 0.1772 0.39153 2009 1 18 54849 -0.0971 0.1796 0.39029 2009 1 19 54850 -0.0999 0.1821 0.38927 2009 1 20 54851 -0.1027 0.1846 0.38846 2009 1 21 54852 -0.1055 0.1871 0.38781 2009 1 22 54853 -0.1082 0.1897 0.38727 2009 1 23 54854 -0.1109 0.1923 0.38677 2009 1 24 54855 -0.1136 0.1950 0.38625 2009 1 25 54856 -0.1162 0.1977 0.38562 2009 1 26 54857 -0.1187 0.2004 0.38484 2009 1 27 54858 -0.1212 0.2032 0.38388 2009 1 28 54859 -0.1237 0.2060 0.38272 2009 1 29 54860 -0.1261 0.2088 0.38140 2009 1 30 54861 -0.1284 0.2117 0.37996 2009 1 31 54862 -0.1307 0.2147 0.37848 2009 2 1 54863 -0.1330 0.2176 0.37705 2009 2 2 54864 -0.1352 0.2206 0.37572 2009 2 3 54865 -0.1374 0.2236 0.37457 2009 2 4 54866 -0.1395 0.2267 0.37360 2009 2 5 54867 -0.1415 0.2298 0.37278 2009 2 6 54868 -0.1436 0.2329 0.37200 2009 2 7 54869 -0.1455 0.2361 0.37114 2009 2 8 54870 -0.1474 0.2392 0.37008 2009 2 9 54871 -0.1493 0.2424 0.36874 2009 2 10 54872 -0.1510 0.2457 0.36715 2009 2 11 54873 -0.1528 0.2490 0.36538 2009 2 12 54874 -0.1545 0.2523 0.36357 2009 2 13 54875 -0.1561 0.2556 0.36186 2009 2 14 54876 -0.1577 0.2589 0.36034 2009 2 15 54877 -0.1592 0.2623 0.35905 2009 2 16 54878 -0.1606 0.2657 0.35801 2009 2 17 54879 -0.1620 0.2691 0.35716 2009 2 18 54880 -0.1634 0.2725 0.35645 2009 2 19 54881 -0.1647 0.2760 0.35579 2009 2 20 54882 -0.1659 0.2795 0.35512 2009 2 21 54883 -0.1670 0.2829 0.35438 2009 2 22 54884 -0.1682 0.2865 0.35349 2009 2 23 54885 -0.1692 0.2900 0.35241 2009 2 24 54886 -0.1702 0.2935 0.35113 2009 2 25 54887 -0.1711 0.2971 0.34966 2009 2 26 54888 -0.1720 0.3007 0.34804 2009 2 27 54889 -0.1728 0.3042 0.34636 2009 2 28 54890 -0.1736 0.3078 0.34471 2009 3 1 54891 -0.1743 0.3115 0.34316 2009 3 2 54892 -0.1749 0.3151 0.34180 2009 3 3 54893 -0.1755 0.3187 0.34063 2009 3 4 54894 -0.1760 0.3223 0.33962 2009 3 5 54895 -0.1764 0.3260 0.33871 2009 3 6 54896 -0.1768 0.3296 0.33775 2009 3 7 54897 -0.1772 0.3333 0.33665 2009 3 8 54898 -0.1774 0.3370 0.33530 2009 3 9 54899 -0.1777 0.3406 0.33369 2009 3 10 54900 -0.1778 0.3443 0.33185 2009 3 11 54901 -0.1779 0.3480 0.32991 2009 3 12 54902 -0.1779 0.3517 0.32798 2009 3 13 54903 -0.1779 0.3553 0.32620 2009 3 14 54904 -0.1778 0.3590 0.32462 2009 3 15 54905 -0.1776 0.3627 0.32327 2009 3 16 54906 -0.1774 0.3663 0.32214 2009 3 17 54907 -0.1771 0.3700 0.32117 2009 3 18 54908 -0.1768 0.3737 0.32029 2009 3 19 54909 -0.1764 0.3773 0.31944 2009 3 20 54910 -0.1759 0.3810 0.31853 2009 3 21 54911 -0.1754 0.3846 0.31751 2009 3 22 54912 -0.1748 0.3883 0.31632 2009 3 23 54913 -0.1742 0.3919 0.31494 2009 3 24 54914 -0.1735 0.3955 0.31337 2009 3 25 54915 -0.1727 0.3991 0.31163 2009 3 26 54916 -0.1719 0.4027 0.30980 2009 3 27 54917 -0.1711 0.4063 0.30796 2009 3 28 54918 -0.1701 0.4099 0.30621 2009 3 29 54919 -0.1691 0.4134 0.30464 2009 3 30 54920 -0.1681 0.4170 0.30328 2009 3 31 54921 -0.1670 0.4205 0.30213 2009 4 1 54922 -0.1658 0.4240 0.30109 2009 4 2 54923 -0.1646 0.4275 0.30008 2009 4 3 54924 -0.1633 0.4310 0.29896 2009 4 4 54925 -0.1619 0.4344 0.29764 2009 4 5 54926 -0.1605 0.4379 0.29610 2009 4 6 54927 -0.1591 0.4413 0.29435 2009 4 7 54928 -0.1576 0.4447 0.29247 2009 4 8 54929 -0.1560 0.4480 0.29056 2009 4 9 54930 -0.1544 0.4514 0.28876 2009 4 10 54931 -0.1527 0.4547 0.28714 2009 4 11 54932 -0.1510 0.4580 0.28575 2009 4 12 54933 -0.1492 0.4613 0.28459 2009 4 13 54934 -0.1474 0.4645 0.28362 2009 4 14 54935 -0.1455 0.4677 0.28279 2009 4 15 54936 -0.1436 0.4709 0.28201 2009 4 16 54937 -0.1416 0.4741 0.28122 2009 4 17 54938 -0.1396 0.4772 0.28034 2009 4 18 54939 -0.1375 0.4803 0.27933 2009 4 19 54940 -0.1353 0.4833 0.27815 2009 4 20 54941 -0.1331 0.4864 0.27678 2009 4 21 54942 -0.1309 0.4894 0.27525 2009 4 22 54943 -0.1286 0.4923 0.27359 2009 4 23 54944 -0.1263 0.4953 0.27187 2009 4 24 54945 -0.1239 0.4982 0.27020 2009 4 25 54946 -0.1215 0.5010 0.26866 2009 4 26 54947 -0.1190 0.5039 0.26732 2009 4 27 54948 -0.1165 0.5066 0.26618 2009 4 28 54949 -0.1139 0.5094 0.26519 2009 4 29 54950 -0.1113 0.5121 0.26422 2009 4 30 54951 -0.1087 0.5148 0.26314 2009 5 1 54952 -0.1060 0.5174 0.26187 2009 5 2 54953 -0.1033 0.5200 0.26033 2009 5 3 54954 -0.1005 0.5225 0.25854 2009 5 4 54955 -0.0977 0.5250 0.25657 2009 5 5 54956 -0.0948 0.5275 0.25451 2009 5 6 54957 -0.0919 0.5299 0.25247 2009 5 7 54958 -0.0890 0.5323 0.25054 2009 5 8 54959 -0.0860 0.5346 0.24882 2009 5 9 54960 -0.0830 0.5369 0.24732 2009 5 10 54961 -0.0800 0.5392 0.24607 2009 5 11 54962 -0.0769 0.5414 0.24503 2009 5 12 54963 -0.0738 0.5435 0.24414 2009 5 13 54964 -0.0707 0.5456 0.24333 2009 5 14 54965 -0.0675 0.5477 0.24252 2009 5 15 54966 -0.0643 0.5497 0.24164 2009 5 16 54967 -0.0611 0.5516 0.24065 2009 5 17 54968 -0.0578 0.5535 0.23954 2009 5 18 54969 -0.0545 0.5554 0.23830 2009 5 19 54970 -0.0512 0.5572 0.23700 2009 5 20 54971 -0.0478 0.5590 0.23568 2009 5 21 54972 -0.0445 0.5607 0.23443 2009 5 22 54973 -0.0411 0.5624 0.23336 2009 5 23 54974 -0.0376 0.5640 0.23253 2009 5 24 54975 -0.0342 0.5655 0.23197 2009 5 25 54976 -0.0307 0.5670 0.23166 2009 5 26 54977 -0.0272 0.5685 0.23149 2009 5 27 54978 -0.0237 0.5699 0.23133 2009 5 28 54979 -0.0202 0.5712 0.23107 2009 5 29 54980 -0.0166 0.5725 0.23063 2009 5 30 54981 -0.0130 0.5738 0.23004 2009 5 31 54982 -0.0094 0.5749 0.22937 2009 6 1 54983 -0.0058 0.5761 0.22872 2009 6 2 54984 -0.0022 0.5772 0.22818 2009 6 3 54985 0.0014 0.5782 0.22784 2009 6 4 54986 0.0051 0.5792 0.22774 2009 6 5 54987 0.0088 0.5801 0.22785 2009 6 6 54988 0.0124 0.5809 0.22813 2009 6 7 54989 0.0161 0.5817 0.22853 2009 6 8 54990 0.0198 0.5825 0.22898 2009 6 9 54991 0.0235 0.5832 0.22942 2009 6 10 54992 0.0273 0.5838 0.22976 2009 6 11 54993 0.0310 0.5844 0.23000 2009 6 12 54994 0.0347 0.5849 0.23017 2009 6 13 54995 0.0384 0.5854 0.23025 2009 6 14 54996 0.0422 0.5858 0.23014 2009 6 15 54997 0.0459 0.5861 0.22991 2009 6 16 54998 0.0497 0.5864 0.22958 2009 6 17 54999 0.0534 0.5867 0.22925 2009 6 18 55000 0.0572 0.5869 0.22899 2009 6 19 55001 0.0609 0.5870 0.22886 2009 6 20 55002 0.0647 0.5871 0.22887 2009 6 21 55003 0.0684 0.5871 0.22903 2009 6 22 55004 0.0722 0.5871 0.22930 2009 6 23 55005 0.0759 0.5870 0.22961 2009 6 24 55006 0.0796 0.5868 0.22986 2009 6 25 55007 0.0834 0.5866 0.22996 2009 6 26 55008 0.0871 0.5863 0.22987 2009 6 27 55009 0.0908 0.5860 0.22969 2009 6 28 55010 0.0945 0.5856 0.22945 2009 6 29 55011 0.0982 0.5852 0.22929 2009 6 30 55012 0.1019 0.5847 0.22937 2009 7 1 55013 0.1056 0.5842 0.22968 2009 7 2 55014 0.1092 0.5836 0.23021 2009 7 3 55015 0.1129 0.5829 0.23096 2009 7 4 55016 0.1165 0.5822 0.23187 2009 7 5 55017 0.1201 0.5815 0.23288 2009 7 6 55018 0.1237 0.5806 0.23393 2009 7 7 55019 0.1273 0.5798 0.23495 2009 7 8 55020 0.1309 0.5789 0.23587 2009 7 9 55021 0.1344 0.5779 0.23663 2009 7 10 55022 0.1380 0.5768 0.23725 2009 7 11 55023 0.1415 0.5758 0.23771 2009 7 12 55024 0.1450 0.5746 0.23803 2009 7 13 55025 0.1484 0.5734 0.23829 2009 7 14 55026 0.1519 0.5722 0.23855 2009 7 15 55027 0.1553 0.5709 0.23881 2009 7 16 55028 0.1587 0.5696 0.23921 2009 7 17 55029 0.1621 0.5682 0.23977 2009 7 18 55030 0.1654 0.5667 0.24047 2009 7 19 55031 0.1687 0.5652 0.24125 2009 7 20 55032 0.1720 0.5637 0.24202 2009 7 21 55033 0.1753 0.5621 0.24267 2009 7 22 55034 0.1785 0.5604 0.24309 2009 7 23 55035 0.1817 0.5587 0.24326 2009 7 24 55036 0.1849 0.5570 0.24316 2009 7 25 55037 0.1880 0.5552 0.24285 2009 7 26 55038 0.1911 0.5534 0.24250 2009 7 27 55039 0.1942 0.5515 0.24225 2009 7 28 55040 0.1972 0.5496 0.24222 2009 7 29 55041 0.2002 0.5476 0.24244 2009 7 30 55042 0.2032 0.5456 0.24284 2009 7 31 55043 0.2061 0.5435 0.24331 2009 8 1 55044 0.2090 0.5414 0.24383 2009 8 2 55045 0.2119 0.5393 0.24437 2009 8 3 55046 0.2147 0.5371 0.24494 2009 8 4 55047 0.2175 0.5349 0.24540 2009 8 5 55048 0.2202 0.5326 0.24575 2009 8 6 55049 0.2229 0.5303 0.24598 2009 8 7 55050 0.2255 0.5279 0.24598 2009 8 8 55051 0.2282 0.5255 0.24578 2009 8 9 55052 0.2307 0.5231 0.24544 2009 8 10 55053 0.2333 0.5206 0.24502 2009 8 11 55054 0.2357 0.5181 0.24463 2009 8 12 55055 0.2382 0.5156 0.24432 2009 8 13 55056 0.2406 0.5130 0.24411 2009 8 14 55057 0.2429 0.5104 0.24405 2009 8 15 55058 0.2452 0.5077 0.24415 2009 8 16 55059 0.2475 0.5050 0.24430 2009 8 17 55060 0.2497 0.5023 0.24434 2009 8 18 55061 0.2519 0.4995 0.24416 2009 8 19 55062 0.2540 0.4968 0.24374 2009 8 20 55063 0.2561 0.4939 0.24304 2009 8 21 55064 0.2581 0.4911 0.24215 2009 8 22 55065 0.2600 0.4882 0.24123 2009 8 23 55066 0.2620 0.4853 0.24038 2009 8 24 55067 0.2638 0.4824 0.23975 2009 8 25 55068 0.2656 0.4794 0.23940 2009 8 26 55069 0.2674 0.4764 0.23932 2009 8 27 55070 0.2691 0.4734 0.23944 2009 8 28 55071 0.2708 0.4704 0.23969 2009 8 29 55072 0.2724 0.4673 0.23999 2009 8 30 55073 0.2740 0.4642 0.24023 2009 8 31 55074 0.2755 0.4611 0.24037 2009 9 1 55075 0.2769 0.4579 0.24044 2009 9 2 55076 0.2783 0.4548 0.24034 2009 9 3 55077 0.2797 0.4516 0.24005 2009 9 4 55078 0.2810 0.4484 0.23958 2009 9 5 55079 0.2822 0.4452 0.23894 2009 9 6 55080 0.2834 0.4420 0.23816 2009 9 7 55081 0.2845 0.4387 0.23732 2009 9 8 55082 0.2856 0.4355 0.23650 2009 9 9 55083 0.2866 0.4322 0.23574 2009 9 10 55084 0.2876 0.4289 0.23513 2009 9 11 55085 0.2885 0.4256 0.23470 2009 9 12 55086 0.2893 0.4222 0.23441 2009 9 13 55087 0.2901 0.4189 0.23418 2009 9 14 55088 0.2908 0.4156 0.23388 2009 9 15 55089 0.2915 0.4122 0.23337 2009 9 16 55090 0.2921 0.4088 0.23257 2009 9 17 55091 0.2927 0.4054 0.23151 2009 9 18 55092 0.2932 0.4021 0.23036 2009 9 19 55093 0.2937 0.3987 0.22918 2009 9 20 55094 0.2941 0.3953 0.22808 2009 9 21 55095 0.2944 0.3919 0.22715 2009 9 22 55096 0.2947 0.3885 0.22645 2009 9 23 55097 0.2949 0.3850 0.22598 2009 9 24 55098 0.2951 0.3816 0.22571 2009 9 25 55099 0.2952 0.3782 0.22552 2009 9 26 55100 0.2953 0.3748 0.22531 2009 9 27 55101 0.2953 0.3714 0.22512 2009 9 28 55102 0.2952 0.3680 0.22492 2009 9 29 55103 0.2951 0.3646 0.22458 2009 9 30 55104 0.2949 0.3611 0.22407 2009 10 1 55105 0.2947 0.3577 0.22341 2009 10 2 55106 0.2944 0.3543 0.22264 2009 10 3 55107 0.2941 0.3509 0.22176 2009 10 4 55108 0.2937 0.3475 0.22083 2009 10 5 55109 0.2932 0.3441 0.21995 2009 10 6 55110 0.2927 0.3408 0.21921 2009 10 7 55111 0.2922 0.3374 0.21862 2009 10 8 55112 0.2916 0.3340 0.21813 2009 10 9 55113 0.2909 0.3307 0.21769 2009 10 10 55114 0.2902 0.3273 0.21719 2009 10 11 55115 0.2894 0.3240 0.21654 2009 10 12 55116 0.2885 0.3207 0.21561 2009 10 13 55117 0.2877 0.3174 0.21437 2009 10 14 55118 0.2867 0.3141 0.21286 2009 10 15 55119 0.2857 0.3108 0.21116 2009 10 16 55120 0.2847 0.3075 0.20938 2009 10 17 55121 0.2836 0.3043 0.20768 2009 10 18 55122 0.2824 0.3011 0.20615 2009 10 19 55123 0.2812 0.2979 0.20482 2009 10 20 55124 0.2799 0.2947 0.20370 2009 10 21 55125 0.2786 0.2915 0.20274 2009 10 22 55126 0.2773 0.2883 0.20188 2009 10 23 55127 0.2759 0.2852 0.20105 2009 10 24 55128 0.2744 0.2821 0.20023 2009 10 25 55129 0.2729 0.2790 0.19938 2009 10 26 55130 0.2713 0.2760 0.19848 2009 10 27 55131 0.2697 0.2729 0.19748 2009 10 28 55132 0.2681 0.2699 0.19638 2009 10 29 55133 0.2664 0.2669 0.19520 2009 10 30 55134 0.2646 0.2640 0.19394 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) 54750 -68.42 .19 -6.88 .22 54751 -68.63 .19 -6.87 .22 54752 -68.73 .19 -6.83 .18 54753 -68.72 .19 -6.71 .14 54754 -68.66 .16 -6.59 .11 54755 -68.60 .16 -6.56 .11 54756 -68.50 .16 -6.61 .11 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 54750 -0.065 0.076 -0.388 0.220 54751 -0.082 0.076 -0.405 0.220 54752 -0.096 0.076 -0.412 0.180 54753 -0.111 0.076 -0.420 0.140 54754 -0.119 0.064 -0.428 0.110 54755 -0.122 0.064 -0.423 0.110 54756 -0.122 0.064 -0.428 0.110 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.