********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 25 September 2008 Vol. XXI No. 039 ______________________________________________________________________ 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 9 19 54728 .28600 .00009 .25817 .00009 -.480026 .000008 8 9 20 54729 .28415 .00009 .25464 .00009 -.480988 .000012 8 9 21 54730 .28223 .00009 .25122 .00009 -.481686 .000011 8 9 22 54731 .28023 .00009 .24781 .00009 -.482259 .000014 8 9 23 54732 .27834 .00009 .24431 .00009 -.482823 .000037 8 9 24 54733 .27655 .00009 .24091 .00009 -.483460 .000048 8 9 25 54734 .27483 .00009 .23753 .00009 -.484328 .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 = .0735 + .1180 cos A - .0185 sin A + .0834 cos C - .0973 sin C y = .3412 - .0051 cos A - .1067 sin A - .0973 cos C - .0834 sin C UT1-UTC = -.5336 - .00086 (MJD - 54742) - (UT2-UT1) where A = 2*pi*(MJD-54734)/365.25 and C = 2*pi*(MJD-54734)/435. TAI-UTC(MJD 54735) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-54734)**0.80 S t = 0.00025 (MJD-54734)**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 26 54735 0.2730 0.2343 -0.48550 2008 9 27 54736 0.2712 0.2311 -0.48685 2008 9 28 54737 0.2692 0.2279 -0.48826 2008 9 29 54738 0.2672 0.2248 -0.48966 2008 9 30 54739 0.2651 0.2217 -0.49098 2008 10 1 54740 0.2629 0.2186 -0.49216 2008 10 2 54741 0.2606 0.2156 -0.49315 2008 10 3 54742 0.2583 0.2125 -0.49394 2008 10 4 54743 0.2560 0.2096 -0.49457 2008 10 5 54744 0.2536 0.2066 -0.49509 2008 10 6 54745 0.2511 0.2037 -0.49557 2008 10 7 54746 0.2486 0.2008 -0.49612 2008 10 8 54747 0.2461 0.1980 -0.49678 2008 10 9 54748 0.2435 0.1952 -0.49764 2008 10 10 54749 0.2408 0.1924 -0.49875 2008 10 11 54750 0.2381 0.1897 -0.50016 2008 10 12 54751 0.2354 0.1870 -0.50182 2008 10 13 54752 0.2326 0.1844 -0.50365 2008 10 14 54753 0.2298 0.1818 -0.50554 2008 10 15 54754 0.2269 0.1792 -0.50734 2008 10 16 54755 0.2240 0.1767 -0.50893 2008 10 17 54756 0.2210 0.1743 -0.51026 2008 10 18 54757 0.2180 0.1718 -0.51134 2008 10 19 54758 0.2150 0.1695 -0.51227 2008 10 20 54759 0.2119 0.1671 -0.51318 2008 10 21 54760 0.2088 0.1648 -0.51420 2008 10 22 54761 0.2057 0.1626 -0.51541 2008 10 23 54762 0.2025 0.1604 -0.51684 2008 10 24 54763 0.1992 0.1583 -0.51844 2008 10 25 54764 0.1960 0.1562 -0.52016 2008 10 26 54765 0.1927 0.1541 -0.52188 2008 10 27 54766 0.1894 0.1521 -0.52353 2008 10 28 54767 0.1860 0.1502 -0.52502 2008 10 29 54768 0.1826 0.1483 -0.52633 2008 10 30 54769 0.1792 0.1464 -0.52745 2008 10 31 54770 0.1757 0.1446 -0.52839 2008 11 1 54771 0.1723 0.1429 -0.52922 2008 11 2 54772 0.1688 0.1412 -0.52998 2008 11 3 54773 0.1652 0.1396 -0.53077 2008 11 4 54774 0.1617 0.1380 -0.53163 2008 11 5 54775 0.1581 0.1364 -0.53264 2008 11 6 54776 0.1545 0.1350 -0.53385 2008 11 7 54777 0.1508 0.1335 -0.53528 2008 11 8 54778 0.1472 0.1322 -0.53692 2008 11 9 54779 0.1435 0.1309 -0.53874 2008 11 10 54780 0.1398 0.1296 -0.54064 2008 11 11 54781 0.1361 0.1284 -0.54253 2008 11 12 54782 0.1323 0.1273 -0.54427 2008 11 13 54783 0.1285 0.1262 -0.54578 2008 11 14 54784 0.1248 0.1251 -0.54704 2008 11 15 54785 0.1210 0.1242 -0.54811 2008 11 16 54786 0.1172 0.1232 -0.54910 2008 11 17 54787 0.1133 0.1224 -0.55017 2008 11 18 54788 0.1095 0.1216 -0.55143 2008 11 19 54789 0.1057 0.1208 -0.55290 2008 11 20 54790 0.1018 0.1201 -0.55457 2008 11 21 54791 0.0979 0.1195 -0.55634 2008 11 22 54792 0.0940 0.1189 -0.55813 2008 11 23 54793 0.0901 0.1184 -0.55984 2008 11 24 54794 0.0863 0.1180 -0.56140 2008 11 25 54795 0.0823 0.1176 -0.56277 2008 11 26 54796 0.0784 0.1172 -0.56394 2008 11 27 54797 0.0745 0.1170 -0.56491 2008 11 28 54798 0.0706 0.1167 -0.56574 2008 11 29 54799 0.0667 0.1166 -0.56648 2008 11 30 54800 0.0628 0.1165 -0.56720 2008 12 1 54801 0.0588 0.1164 -0.56797 2008 12 2 54802 0.0549 0.1164 -0.56884 2008 12 3 54803 0.0510 0.1165 -0.56988 2008 12 4 54804 0.0471 0.1167 -0.57109 2008 12 5 54805 0.0432 0.1169 -0.57248 2008 12 6 54806 0.0393 0.1171 -0.57403 2008 12 7 54807 0.0354 0.1174 -0.57567 2008 12 8 54808 0.0315 0.1178 -0.57732 2008 12 9 54809 0.0276 0.1182 -0.57888 2008 12 10 54810 0.0237 0.1187 -0.58026 2008 12 11 54811 0.0198 0.1193 -0.58141 2008 12 12 54812 0.0160 0.1199 -0.58235 2008 12 13 54813 0.0121 0.1205 -0.58318 2008 12 14 54814 0.0083 0.1213 -0.58404 2008 12 15 54815 0.0044 0.1220 -0.58505 2008 12 16 54816 0.0006 0.1229 -0.58629 2008 12 17 54817 -0.0032 0.1238 -0.58774 2008 12 18 54818 -0.0070 0.1247 -0.58933 2008 12 19 54819 -0.0107 0.1258 -0.59094 2008 12 20 54820 -0.0145 0.1268 -0.59247 2008 12 21 54821 -0.0182 0.1279 -0.59383 2008 12 22 54822 -0.0219 0.1291 -0.59498 2008 12 23 54823 -0.0256 0.1304 -0.59592 2008 12 24 54824 -0.0292 0.1317 -0.59666 2008 12 25 54825 -0.0329 0.1330 -0.59724 2008 12 26 54826 -0.0365 0.1344 -0.59771 2008 12 27 54827 -0.0401 0.1359 -0.59814 2008 12 28 54828 -0.0437 0.1374 -0.59860 2008 12 29 54829 -0.0472 0.1390 -0.59915 2008 12 30 54830 -0.0507 0.1406 -0.59984 2008 12 31 54831 -0.0542 0.1423 -0.60070 2009 1 1 54832 -0.0576 0.1440 0.39827 2009 1 2 54833 -0.0611 0.1458 0.39709 2009 1 3 54834 -0.0645 0.1476 0.39581 2009 1 4 54835 -0.0678 0.1495 0.39451 2009 1 5 54836 -0.0712 0.1514 0.39327 2009 1 6 54837 -0.0745 0.1534 0.39217 2009 1 7 54838 -0.0777 0.1554 0.39127 2009 1 8 54839 -0.0809 0.1575 0.39057 2009 1 9 54840 -0.0841 0.1597 0.39001 2009 1 10 54841 -0.0873 0.1618 0.38948 2009 1 11 54842 -0.0904 0.1641 0.38883 2009 1 12 54843 -0.0935 0.1664 0.38790 2009 1 13 54844 -0.0965 0.1687 0.38671 2009 1 14 54845 -0.0995 0.1710 0.38532 2009 1 15 54846 -0.1025 0.1735 0.38384 2009 1 16 54847 -0.1054 0.1759 0.38240 2009 1 17 54848 -0.1083 0.1784 0.38110 2009 1 18 54849 -0.1111 0.1810 0.38001 2009 1 19 54850 -0.1139 0.1836 0.37914 2009 1 20 54851 -0.1167 0.1862 0.37848 2009 1 21 54852 -0.1194 0.1889 0.37798 2009 1 22 54853 -0.1220 0.1916 0.37759 2009 1 23 54854 -0.1246 0.1944 0.37725 2009 1 24 54855 -0.1272 0.1972 0.37688 2009 1 25 54856 -0.1297 0.2000 0.37641 2009 1 26 54857 -0.1322 0.2029 0.37579 2009 1 27 54858 -0.1346 0.2058 0.37498 2009 1 28 54859 -0.1370 0.2087 0.37398 2009 1 29 54860 -0.1393 0.2117 0.37282 2009 1 30 54861 -0.1416 0.2148 0.37154 2009 1 31 54862 -0.1438 0.2178 0.37022 2009 2 1 54863 -0.1460 0.2209 0.36894 2009 2 2 54864 -0.1481 0.2240 0.36779 2009 2 3 54865 -0.1501 0.2272 0.36681 2009 2 4 54866 -0.1521 0.2304 0.36602 2009 2 5 54867 -0.1541 0.2336 0.36538 2009 2 6 54868 -0.1560 0.2368 0.36479 2009 2 7 54869 -0.1578 0.2401 0.36412 2009 2 8 54870 -0.1596 0.2434 0.36324 2009 2 9 54871 -0.1614 0.2468 0.36210 2009 2 10 54872 -0.1630 0.2501 0.36069 2009 2 11 54873 -0.1647 0.2535 0.35910 2009 2 12 54874 -0.1662 0.2569 0.35747 2009 2 13 54875 -0.1677 0.2603 0.35593 2009 2 14 54876 -0.1692 0.2638 0.35458 2009 2 15 54877 -0.1706 0.2673 0.35345 2009 2 16 54878 -0.1719 0.2708 0.35254 2009 2 17 54879 -0.1732 0.2743 0.35182 2009 2 18 54880 -0.1744 0.2778 0.35122 2009 2 19 54881 -0.1756 0.2814 0.35069 2009 2 20 54882 -0.1767 0.2850 0.35015 2009 2 21 54883 -0.1777 0.2886 0.34952 2009 2 22 54884 -0.1787 0.2922 0.34875 2009 2 23 54885 -0.1796 0.2958 0.34779 2009 2 24 54886 -0.1805 0.2995 0.34662 2009 2 25 54887 -0.1813 0.3031 0.34526 2009 2 26 54888 -0.1820 0.3068 0.34375 2009 2 27 54889 -0.1827 0.3104 0.34218 2009 2 28 54890 -0.1833 0.3141 0.34062 2009 3 1 54891 -0.1838 0.3178 0.33917 2009 3 2 54892 -0.1843 0.3215 0.33790 2009 3 3 54893 -0.1848 0.3253 0.33683 2009 3 4 54894 -0.1851 0.3290 0.33592 2009 3 5 54895 -0.1854 0.3327 0.33509 2009 3 6 54896 -0.1857 0.3364 0.33423 2009 3 7 54897 -0.1859 0.3402 0.33321 2009 3 8 54898 -0.1860 0.3439 0.33195 2009 3 9 54899 -0.1861 0.3477 0.33042 2009 3 10 54900 -0.1861 0.3514 0.32867 2009 3 11 54901 -0.1860 0.3551 0.32681 2009 3 12 54902 -0.1859 0.3589 0.32496 2009 3 13 54903 -0.1857 0.3626 0.32326 2009 3 14 54904 -0.1854 0.3664 0.32176 2009 3 15 54905 -0.1851 0.3701 0.32049 2009 3 16 54906 -0.1847 0.3738 0.31944 2009 3 17 54907 -0.1843 0.3776 0.31854 2009 3 18 54908 -0.1838 0.3813 0.31773 2009 3 19 54909 -0.1833 0.3850 0.31694 2009 3 20 54910 -0.1826 0.3887 0.31609 2009 3 21 54911 -0.1820 0.3924 0.31511 2009 3 22 54912 -0.1812 0.3961 0.31397 2009 3 23 54913 -0.1804 0.3998 0.31261 2009 3 24 54914 -0.1796 0.4034 0.31105 2009 3 25 54915 -0.1786 0.4071 0.30931 2009 3 26 54916 -0.1777 0.4107 0.30745 2009 3 27 54917 -0.1766 0.4143 0.30556 2009 3 28 54918 -0.1755 0.4179 0.30374 2009 3 29 54919 -0.1744 0.4215 0.30208 2009 3 30 54920 -0.1732 0.4251 0.30061 2009 3 31 54921 -0.1719 0.4287 0.29933 2009 4 1 54922 -0.1706 0.4322 0.29815 2009 4 2 54923 -0.1692 0.4357 0.29698 2009 4 3 54924 -0.1677 0.4392 0.29572 2009 4 4 54925 -0.1662 0.4427 0.29429 2009 4 5 54926 -0.1647 0.4461 0.29266 2009 4 6 54927 -0.1630 0.4496 0.29087 2009 4 7 54928 -0.1614 0.4530 0.28902 2009 4 8 54929 -0.1597 0.4564 0.28720 2009 4 9 54930 -0.1579 0.4597 0.28554 2009 4 10 54931 -0.1560 0.4631 0.28411 2009 4 11 54932 -0.1542 0.4664 0.28296 2009 4 12 54933 -0.1522 0.4696 0.28206 2009 4 13 54934 -0.1502 0.4729 0.28136 2009 4 14 54935 -0.1482 0.4761 0.28080 2009 4 15 54936 -0.1461 0.4793 0.28028 2009 4 16 54937 -0.1439 0.4824 0.27975 2009 4 17 54938 -0.1417 0.4855 0.27914 2009 4 18 54939 -0.1395 0.4886 0.27841 2009 4 19 54940 -0.1372 0.4917 0.27754 2009 4 20 54941 -0.1348 0.4947 0.27653 2009 4 21 54942 -0.1324 0.4977 0.27539 2009 4 22 54943 -0.1300 0.5006 0.27418 2009 4 23 54944 -0.1275 0.5036 0.27297 2009 4 24 54945 -0.1250 0.5064 0.27184 2009 4 25 54946 -0.1224 0.5093 0.27088 2009 4 26 54947 -0.1198 0.5121 0.27013 2009 4 27 54948 -0.1171 0.5148 0.26960 2009 4 28 54949 -0.1144 0.5175 0.26923 2009 4 29 54950 -0.1116 0.5202 0.26892 2009 4 30 54951 -0.1088 0.5229 0.26854 2009 5 1 54952 -0.1060 0.5255 0.26799 2009 5 2 54953 -0.1031 0.5280 0.26723 2009 5 3 54954 -0.1002 0.5305 0.26629 2009 5 4 54955 -0.0972 0.5330 0.26523 2009 5 5 54956 -0.0942 0.5354 0.26417 2009 5 6 54957 -0.0912 0.5378 0.26316 2009 5 7 54958 -0.0881 0.5401 0.26234 2009 5 8 54959 -0.0850 0.5424 0.26175 2009 5 9 54960 -0.0819 0.5446 0.26135 2009 5 10 54961 -0.0787 0.5468 0.26110 2009 5 11 54962 -0.0755 0.5490 0.26096 2009 5 12 54963 -0.0722 0.5511 0.26087 2009 5 13 54964 -0.0689 0.5531 0.26079 2009 5 14 54965 -0.0656 0.5551 0.26067 2009 5 15 54966 -0.0623 0.5571 0.26043 2009 5 16 54967 -0.0589 0.5590 0.26000 2009 5 17 54968 -0.0555 0.5608 0.25938 2009 5 18 54969 -0.0521 0.5626 0.25858 2009 5 19 54970 -0.0487 0.5643 0.25768 2009 5 20 54971 -0.0452 0.5660 0.25672 2009 5 21 54972 -0.0417 0.5677 0.25572 2009 5 22 54973 -0.0382 0.5693 0.25473 2009 5 23 54974 -0.0346 0.5708 0.25385 2009 5 24 54975 -0.0310 0.5723 0.25319 2009 5 25 54976 -0.0275 0.5737 0.25278 2009 5 26 54977 -0.0238 0.5751 0.25245 2009 5 27 54978 -0.0202 0.5764 0.25214 2009 5 28 54979 -0.0166 0.5776 0.25173 2009 5 29 54980 -0.0129 0.5789 0.25106 2009 5 30 54981 -0.0092 0.5800 0.25015 2009 5 31 54982 -0.0055 0.5811 0.24907 2009 6 1 54983 -0.0018 0.5821 0.24794 2009 6 2 54984 0.0019 0.5831 0.24690 2009 6 3 54985 0.0057 0.5841 0.24602 2009 6 4 54986 0.0094 0.5849 0.24532 2009 6 5 54987 0.0132 0.5858 0.24485 2009 6 6 54988 0.0170 0.5865 0.24462 2009 6 7 54989 0.0208 0.5872 0.24454 2009 6 8 54990 0.0246 0.5879 0.24451 2009 6 9 54991 0.0284 0.5885 0.24448 2009 6 10 54992 0.0322 0.5890 0.24444 2009 6 11 54993 0.0360 0.5895 0.24433 2009 6 12 54994 0.0398 0.5899 0.24413 2009 6 13 54995 0.0436 0.5902 0.24386 2009 6 14 54996 0.0474 0.5905 0.24348 2009 6 15 54997 0.0513 0.5908 0.24303 2009 6 16 54998 0.0551 0.5910 0.24255 2009 6 17 54999 0.0589 0.5911 0.24209 2009 6 18 55000 0.0627 0.5912 0.24169 2009 6 19 55001 0.0666 0.5912 0.24144 2009 6 20 55002 0.0704 0.5911 0.24137 2009 6 21 55003 0.0742 0.5910 0.24145 2009 6 22 55004 0.0780 0.5909 0.24166 2009 6 23 55005 0.0818 0.5907 0.24193 2009 6 24 55006 0.0856 0.5904 0.24210 2009 6 25 55007 0.0894 0.5901 0.24205 2009 6 26 55008 0.0932 0.5897 0.24175 2009 6 27 55009 0.0969 0.5892 0.24124 2009 6 28 55010 0.1007 0.5887 0.24058 2009 6 29 55011 0.1044 0.5882 0.23993 2009 6 30 55012 0.1082 0.5876 0.23939 2009 7 1 55013 0.1119 0.5869 0.23901 2009 7 2 55014 0.1156 0.5862 0.23886 2009 7 3 55015 0.1193 0.5854 0.23897 2009 7 4 55016 0.1230 0.5845 0.23930 2009 7 5 55017 0.1266 0.5837 0.23981 2009 7 6 55018 0.1302 0.5827 0.24044 2009 7 7 55019 0.1339 0.5817 0.24106 2009 7 8 55020 0.1375 0.5806 0.24158 2009 7 9 55021 0.1410 0.5795 0.24197 2009 7 10 55022 0.1446 0.5784 0.24229 2009 7 11 55023 0.1481 0.5771 0.24247 2009 7 12 55024 0.1516 0.5759 0.24251 2009 7 13 55025 0.1551 0.5745 0.24242 2009 7 14 55026 0.1586 0.5732 0.24229 2009 7 15 55027 0.1620 0.5717 0.24221 2009 7 16 55028 0.1654 0.5703 0.24225 2009 7 17 55029 0.1688 0.5687 0.24246 2009 7 18 55030 0.1721 0.5671 0.24279 2009 7 19 55031 0.1754 0.5655 0.24335 2009 7 20 55032 0.1787 0.5638 0.24405 2009 7 21 55033 0.1820 0.5621 0.24468 2009 7 22 55034 0.1852 0.5603 0.24511 2009 7 23 55035 0.1884 0.5585 0.24530 2009 7 24 55036 0.1916 0.5566 0.24527 2009 7 25 55037 0.1947 0.5547 0.24506 2009 7 26 55038 0.1978 0.5527 0.24482 2009 7 27 55039 0.2008 0.5507 0.24470 2009 7 28 55040 0.2039 0.5486 0.24482 2009 7 29 55041 0.2068 0.5465 0.24515 2009 7 30 55042 0.2098 0.5443 0.24567 2009 7 31 55043 0.2127 0.5421 0.24629 2009 8 1 55044 0.2155 0.5399 0.24695 2009 8 2 55045 0.2184 0.5376 0.24759 2009 8 3 55046 0.2211 0.5353 0.24810 2009 8 4 55047 0.2239 0.5329 0.24846 2009 8 5 55048 0.2266 0.5305 0.24865 2009 8 6 55049 0.2292 0.5280 0.24868 2009 8 7 55050 0.2319 0.5255 0.24853 2009 8 8 55051 0.2344 0.5230 0.24825 2009 8 9 55052 0.2370 0.5204 0.24788 2009 8 10 55053 0.2394 0.5178 0.24744 2009 8 11 55054 0.2419 0.5152 0.24700 2009 8 12 55055 0.2443 0.5125 0.24660 2009 8 13 55056 0.2466 0.5097 0.24629 2009 8 14 55057 0.2489 0.5070 0.24613 2009 8 15 55058 0.2511 0.5042 0.24612 2009 8 16 55059 0.2533 0.5014 0.24623 2009 8 17 55060 0.2555 0.4985 0.24637 2009 8 18 55061 0.2576 0.4956 0.24639 2009 8 19 55062 0.2596 0.4927 0.24619 2009 8 20 55063 0.2616 0.4897 0.24576 2009 8 21 55064 0.2636 0.4868 0.24511 2009 8 22 55065 0.2655 0.4838 0.24442 2009 8 23 55066 0.2673 0.4807 0.24387 2009 8 24 55067 0.2691 0.4776 0.24354 2009 8 25 55068 0.2708 0.4745 0.24349 2009 8 26 55069 0.2725 0.4714 0.24367 2009 8 27 55070 0.2742 0.4683 0.24402 2009 8 28 55071 0.2757 0.4651 0.24450 2009 8 29 55072 0.2773 0.4619 0.24503 2009 8 30 55073 0.2787 0.4587 0.24559 2009 8 31 55074 0.2801 0.4555 0.24619 2009 9 1 55075 0.2815 0.4522 0.24671 2009 9 2 55076 0.2828 0.4489 0.24707 2009 9 3 55077 0.2841 0.4456 0.24719 2009 9 4 55078 0.2853 0.4423 0.24712 2009 9 5 55079 0.2864 0.4389 0.24691 2009 9 6 55080 0.2875 0.4356 0.24657 2009 9 7 55081 0.2885 0.4322 0.24618 2009 9 8 55082 0.2895 0.4288 0.24585 2009 9 9 55083 0.2904 0.4254 0.24571 2009 9 10 55084 0.2912 0.4220 0.24575 2009 9 11 55085 0.2920 0.4186 0.24590 2009 9 12 55086 0.2928 0.4152 0.24607 2009 9 13 55087 0.2934 0.4117 0.24620 2009 9 14 55088 0.2941 0.4082 0.24624 2009 9 15 55089 0.2946 0.4048 0.24609 2009 9 16 55090 0.2951 0.4013 0.24563 2009 9 17 55091 0.2956 0.3978 0.24481 2009 9 18 55092 0.2960 0.3943 0.24376 2009 9 19 55093 0.2963 0.3908 0.24265 2009 9 20 55094 0.2966 0.3873 0.24163 2009 9 21 55095 0.2968 0.3838 0.24086 2009 9 22 55096 0.2970 0.3803 0.24035 2009 9 23 55097 0.2971 0.3768 0.24008 2009 9 24 55098 0.2971 0.3733 0.23998 2009 9 25 55099 0.2971 0.3698 0.23996 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) 54715 -70.92 .17 -7.58 .34 54716 -70.41 .14 -7.47 .34 54717 -69.85 .14 -7.43 .34 54718 -69.47 .74 -7.52 .34 54719 -69.36 .74 -7.64 .34 54720 -69.47 .74 -7.68 .34 54721 -69.67 .74 -7.62 .34 54722 -69.83 .74 -7.54 .10 54723 -69.87 .74 -7.47 .34 54724 -69.84 .74 -7.40 .34 54725 -69.85 .74 -7.32 .34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 54715 0.060 0.068 -0.402 0.340 54716 0.088 0.056 -0.419 0.340 54717 0.124 0.056 -0.424 0.340 54718 0.146 0.294 -0.438 0.340 54719 0.146 0.294 -0.439 0.340 54720 0.130 0.294 -0.427 0.340 54721 0.116 0.294 -0.406 0.340 54722 0.110 0.294 -0.402 0.100 54723 0.116 0.294 -0.400 0.340 54724 0.123 0.294 -0.399 0.340 54725 0.133 0.294 -0.403 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.