********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 14 August 2008 Vol. XXI No. 033 ______________________________________________________________________ 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 8 54686 .29077 .00009 .39552 .00009 -.457123 .000018 8 8 9 54687 .29142 .00009 .39260 .00009 -.457273 .000022 8 8 10 54688 .29196 .00009 .38946 .00009 -.457271 .000021 8 8 11 54689 .29240 .00009 .38601 .00009 -.457139 .000018 8 8 12 54690 .29277 .00009 .38265 .00009 -.456915 .000018 8 8 13 54691 .29298 .00009 .37937 .00009 -.456686 .000048 8 8 14 54692 .29308 .00009 .37628 .00009 -.456563 .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 = .0728 + .1144 cos A + .0409 sin A + .0995 cos C - .0210 sin C y = .3517 + .0485 cos A - .1002 sin A - .0210 cos C - .0995 sin C UT1-UTC = -.4948 - .00082 (MJD - 54700) - (UT2-UT1) where A = 2*pi*(MJD-54692)/365.25 and C = 2*pi*(MJD-54692)/435. TAI-UTC(MJD 54693) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-54692)**0.80 S t = 0.00025 (MJD-54692)**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 15 54693 0.2932 0.3729 -0.45660 2008 8 16 54694 0.2932 0.3697 -0.45682 2008 8 17 54695 0.2933 0.3663 -0.45725 2008 8 18 54696 0.2933 0.3629 -0.45788 2008 8 19 54697 0.2934 0.3594 -0.45867 2008 8 20 54698 0.2934 0.3559 -0.45951 2008 8 21 54699 0.2935 0.3524 -0.46030 2008 8 22 54700 0.2934 0.3489 -0.46092 2008 8 23 54701 0.2933 0.3454 -0.46132 2008 8 24 54702 0.2932 0.3418 -0.46153 2008 8 25 54703 0.2930 0.3383 -0.46158 2008 8 26 54704 0.2928 0.3348 -0.46161 2008 8 27 54705 0.2925 0.3313 -0.46174 2008 8 28 54706 0.2921 0.3278 -0.46209 2008 8 29 54707 0.2917 0.3243 -0.46271 2008 8 30 54708 0.2912 0.3207 -0.46360 2008 8 31 54709 0.2907 0.3172 -0.46467 2008 9 1 54710 0.2901 0.3137 -0.46583 2008 9 2 54711 0.2895 0.3102 -0.46695 2008 9 3 54712 0.2888 0.3068 -0.46796 2008 9 4 54713 0.2880 0.3033 -0.46880 2008 9 5 54714 0.2872 0.2998 -0.46947 2008 9 6 54715 0.2863 0.2964 -0.46998 2008 9 7 54716 0.2854 0.2929 -0.47035 2008 9 8 54717 0.2844 0.2895 -0.47065 2008 9 9 54718 0.2833 0.2861 -0.47094 2008 9 10 54719 0.2822 0.2827 -0.47130 2008 9 11 54720 0.2811 0.2793 -0.47181 2008 9 12 54721 0.2798 0.2759 -0.47252 2008 9 13 54722 0.2786 0.2726 -0.47347 2008 9 14 54723 0.2772 0.2693 -0.47468 2008 9 15 54724 0.2759 0.2659 -0.47609 2008 9 16 54725 0.2744 0.2627 -0.47763 2008 9 17 54726 0.2729 0.2594 -0.47917 2008 9 18 54727 0.2714 0.2561 -0.48059 2008 9 19 54728 0.2697 0.2529 -0.48182 2008 9 20 54729 0.2681 0.2497 -0.48281 2008 9 21 54730 0.2664 0.2465 -0.48361 2008 9 22 54731 0.2646 0.2434 -0.48432 2008 9 23 54732 0.2628 0.2402 -0.48506 2008 9 24 54733 0.2609 0.2371 -0.48596 2008 9 25 54734 0.2590 0.2341 -0.48708 2008 9 26 54735 0.2570 0.2310 -0.48843 2008 9 27 54736 0.2550 0.2280 -0.48997 2008 9 28 54737 0.2529 0.2250 -0.49162 2008 9 29 54738 0.2508 0.2221 -0.49327 2008 9 30 54739 0.2486 0.2191 -0.49482 2008 10 1 54740 0.2464 0.2162 -0.49620 2008 10 2 54741 0.2441 0.2134 -0.49738 2008 10 3 54742 0.2418 0.2106 -0.49836 2008 10 4 54743 0.2394 0.2078 -0.49918 2008 10 5 54744 0.2370 0.2050 -0.49988 2008 10 6 54745 0.2346 0.2023 -0.50055 2008 10 7 54746 0.2321 0.1996 -0.50126 2008 10 8 54747 0.2295 0.1970 -0.50208 2008 10 9 54748 0.2269 0.1944 -0.50308 2008 10 10 54749 0.2243 0.1918 -0.50431 2008 10 11 54750 0.2216 0.1892 -0.50578 2008 10 12 54751 0.2189 0.1868 -0.50747 2008 10 13 54752 0.2162 0.1843 -0.50933 2008 10 14 54753 0.2134 0.1819 -0.51123 2008 10 15 54754 0.2105 0.1795 -0.51305 2008 10 16 54755 0.2076 0.1772 -0.51468 2008 10 17 54756 0.2047 0.1749 -0.51605 2008 10 18 54757 0.2018 0.1727 -0.51718 2008 10 19 54758 0.1988 0.1705 -0.51816 2008 10 20 54759 0.1958 0.1683 -0.51911 2008 10 21 54760 0.1927 0.1662 -0.52017 2008 10 22 54761 0.1896 0.1642 -0.52142 2008 10 23 54762 0.1865 0.1622 -0.52287 2008 10 24 54763 0.1833 0.1602 -0.52450 2008 10 25 54764 0.1801 0.1583 -0.52622 2008 10 26 54765 0.1769 0.1564 -0.52793 2008 10 27 54766 0.1736 0.1546 -0.52956 2008 10 28 54767 0.1703 0.1528 -0.53102 2008 10 29 54768 0.1670 0.1511 -0.53228 2008 10 30 54769 0.1637 0.1494 -0.53333 2008 10 31 54770 0.1603 0.1478 -0.53420 2008 11 1 54771 0.1569 0.1462 -0.53493 2008 11 2 54772 0.1535 0.1447 -0.53559 2008 11 3 54773 0.1500 0.1432 -0.53625 2008 11 4 54774 0.1466 0.1418 -0.53698 2008 11 5 54775 0.1431 0.1404 -0.53785 2008 11 6 54776 0.1395 0.1391 -0.53889 2008 11 7 54777 0.1360 0.1378 -0.54014 2008 11 8 54778 0.1324 0.1366 -0.54159 2008 11 9 54779 0.1289 0.1355 -0.54319 2008 11 10 54780 0.1253 0.1344 -0.54487 2008 11 11 54781 0.1217 0.1333 -0.54652 2008 11 12 54782 0.1180 0.1323 -0.54801 2008 11 13 54783 0.1144 0.1314 -0.54927 2008 11 14 54784 0.1107 0.1305 -0.55026 2008 11 15 54785 0.1070 0.1297 -0.55106 2008 11 16 54786 0.1034 0.1289 -0.55177 2008 11 17 54787 0.0997 0.1282 -0.55254 2008 11 18 54788 0.0959 0.1275 -0.55348 2008 11 19 54789 0.0922 0.1269 -0.55462 2008 11 20 54790 0.0885 0.1264 -0.55594 2008 11 21 54791 0.0848 0.1259 -0.55736 2008 11 22 54792 0.0810 0.1255 -0.55879 2008 11 23 54793 0.0773 0.1251 -0.56013 2008 11 24 54794 0.0735 0.1248 -0.56132 2008 11 25 54795 0.0697 0.1245 -0.56233 2008 11 26 54796 0.0660 0.1243 -0.56313 2008 11 27 54797 0.0622 0.1241 -0.56375 2008 11 28 54798 0.0584 0.1240 -0.56423 2008 11 29 54799 0.0547 0.1240 -0.56462 2008 11 30 54800 0.0509 0.1240 -0.56500 2008 12 1 54801 0.0471 0.1241 -0.56554 2008 12 2 54802 0.0434 0.1242 -0.56619 2008 12 3 54803 0.0396 0.1244 -0.56700 2008 12 4 54804 0.0358 0.1247 -0.56800 2008 12 5 54805 0.0321 0.1250 -0.56917 2008 12 6 54806 0.0283 0.1253 -0.57051 2008 12 7 54807 0.0246 0.1257 -0.57195 2008 12 8 54808 0.0209 0.1262 -0.57341 2008 12 9 54809 0.0172 0.1267 -0.57478 2008 12 10 54810 0.0134 0.1273 -0.57597 2008 12 11 54811 0.0097 0.1280 -0.57692 2008 12 12 54812 0.0060 0.1287 -0.57767 2008 12 13 54813 0.0024 0.1294 -0.57829 2008 12 14 54814 -0.0013 0.1302 -0.57894 2008 12 15 54815 -0.0049 0.1311 -0.57974 2008 12 16 54816 -0.0086 0.1320 -0.58076 2008 12 17 54817 -0.0122 0.1330 -0.58200 2008 12 18 54818 -0.0158 0.1340 -0.58337 2008 12 19 54819 -0.0194 0.1351 -0.58477 2008 12 20 54820 -0.0229 0.1363 -0.58608 2008 12 21 54821 -0.0265 0.1375 -0.58724 2008 12 22 54822 -0.0300 0.1387 -0.58820 2008 12 23 54823 -0.0335 0.1400 -0.58894 2008 12 24 54824 -0.0370 0.1414 -0.58949 2008 12 25 54825 -0.0404 0.1428 -0.58989 2008 12 26 54826 -0.0439 0.1443 -0.59019 2008 12 27 54827 -0.0473 0.1458 -0.59045 2008 12 28 54828 -0.0506 0.1473 -0.59075 2008 12 29 54829 -0.0540 0.1490 -0.59116 2008 12 30 54830 -0.0573 0.1506 -0.59173 2008 12 31 54831 -0.0606 0.1523 -0.59247 2009 1 1 54832 -0.0639 0.1541 0.40661 2009 1 2 54833 -0.0671 0.1559 0.40554 2009 1 3 54834 -0.0703 0.1578 0.40437 2009 1 4 54835 -0.0735 0.1597 0.40316 2009 1 5 54836 -0.0766 0.1617 0.40201 2009 1 6 54837 -0.0797 0.1637 0.40100 2009 1 7 54838 -0.0828 0.1658 0.40018 2009 1 8 54839 -0.0858 0.1679 0.39957 2009 1 9 54840 -0.0888 0.1700 0.39909 2009 1 10 54841 -0.0918 0.1722 0.39863 2009 1 11 54842 -0.0947 0.1745 0.39805 2009 1 12 54843 -0.0976 0.1768 0.39724 2009 1 13 54844 -0.1004 0.1791 0.39617 2009 1 14 54845 -0.1032 0.1815 0.39490 2009 1 15 54846 -0.1060 0.1839 0.39354 2009 1 16 54847 -0.1087 0.1864 0.39221 2009 1 17 54848 -0.1114 0.1889 0.39103 2009 1 18 54849 -0.1140 0.1915 0.39006 2009 1 19 54850 -0.1166 0.1940 0.38931 2009 1 20 54851 -0.1192 0.1967 0.38877 2009 1 21 54852 -0.1217 0.1993 0.38840 2009 1 22 54853 -0.1241 0.2021 0.38814 2009 1 23 54854 -0.1266 0.2048 0.38792 2009 1 24 54855 -0.1289 0.2076 0.38767 2009 1 25 54856 -0.1313 0.2104 0.38733 2009 1 26 54857 -0.1335 0.2133 0.38684 2009 1 27 54858 -0.1358 0.2161 0.38616 2009 1 28 54859 -0.1379 0.2191 0.38528 2009 1 29 54860 -0.1401 0.2220 0.38424 2009 1 30 54861 -0.1421 0.2250 0.38309 2009 1 31 54862 -0.1442 0.2280 0.38189 2009 2 1 54863 -0.1462 0.2311 0.38073 2009 2 2 54864 -0.1481 0.2342 0.37969 2009 2 3 54865 -0.1500 0.2373 0.37883 2009 2 4 54866 -0.1518 0.2404 0.37816 2009 2 5 54867 -0.1536 0.2436 0.37764 2009 2 6 54868 -0.1553 0.2468 0.37716 2009 2 7 54869 -0.1569 0.2500 0.37662 2009 2 8 54870 -0.1585 0.2533 0.37587 2009 2 9 54871 -0.1601 0.2566 0.37485 2009 2 10 54872 -0.1616 0.2599 0.37358 2009 2 11 54873 -0.1630 0.2632 0.37215 2009 2 12 54874 -0.1644 0.2665 0.37069 2009 2 13 54875 -0.1658 0.2699 0.36933 2009 2 14 54876 -0.1671 0.2733 0.36819 2009 2 15 54877 -0.1683 0.2767 0.36731 2009 2 16 54878 -0.1694 0.2801 0.36668 2009 2 17 54879 -0.1705 0.2836 0.36629 2009 2 18 54880 -0.1716 0.2870 0.36608 2009 2 19 54881 -0.1726 0.2905 0.36600 2009 2 20 54882 -0.1735 0.2940 0.36595 2009 2 21 54883 -0.1744 0.2975 0.36588 2009 2 22 54884 -0.1752 0.3011 0.36569 2009 2 23 54885 -0.1760 0.3046 0.36533 2009 2 24 54886 -0.1767 0.3082 0.36476 2009 2 25 54887 -0.1773 0.3117 0.36398 2009 2 26 54888 -0.1779 0.3153 0.36303 2009 2 27 54889 -0.1784 0.3189 0.36197 2009 2 28 54890 -0.1789 0.3225 0.36089 2009 3 1 54891 -0.1793 0.3261 0.35986 2009 3 2 54892 -0.1796 0.3297 0.35894 2009 3 3 54893 -0.1799 0.3333 0.35815 2009 3 4 54894 -0.1802 0.3369 0.35747 2009 3 5 54895 -0.1803 0.3405 0.35680 2009 3 6 54896 -0.1804 0.3441 0.35604 2009 3 7 54897 -0.1805 0.3478 0.35508 2009 3 8 54898 -0.1805 0.3514 0.35384 2009 3 9 54899 -0.1804 0.3550 0.35231 2009 3 10 54900 -0.1803 0.3586 0.35053 2009 3 11 54901 -0.1801 0.3623 0.34861 2009 3 12 54902 -0.1798 0.3659 0.34669 2009 3 13 54903 -0.1795 0.3695 0.34489 2009 3 14 54904 -0.1791 0.3731 0.34329 2009 3 15 54905 -0.1787 0.3767 0.34190 2009 3 16 54906 -0.1782 0.3803 0.34071 2009 3 17 54907 -0.1777 0.3839 0.33967 2009 3 18 54908 -0.1771 0.3875 0.33871 2009 3 19 54909 -0.1764 0.3911 0.33779 2009 3 20 54910 -0.1757 0.3947 0.33686 2009 3 21 54911 -0.1749 0.3983 0.33586 2009 3 22 54912 -0.1740 0.4018 0.33475 2009 3 23 54913 -0.1732 0.4053 0.33348 2009 3 24 54914 -0.1722 0.4089 0.33206 2009 3 25 54915 -0.1712 0.4124 0.33050 2009 3 26 54916 -0.1701 0.4159 0.32884 2009 3 27 54917 -0.1690 0.4194 0.32717 2009 3 28 54918 -0.1678 0.4228 0.32558 2009 3 29 54919 -0.1666 0.4263 0.32412 2009 3 30 54920 -0.1653 0.4297 0.32286 2009 3 31 54921 -0.1639 0.4331 0.32186 2009 4 1 54922 -0.1625 0.4365 0.32100 2009 4 2 54923 -0.1610 0.4399 0.32014 2009 4 3 54924 -0.1595 0.4432 0.31916 2009 4 4 54925 -0.1580 0.4466 0.31796 2009 4 5 54926 -0.1563 0.4499 0.31645 2009 4 6 54927 -0.1547 0.4531 0.31467 2009 4 7 54928 -0.1529 0.4564 0.31271 2009 4 8 54929 -0.1511 0.4596 0.31066 2009 4 9 54930 -0.1493 0.4628 0.30869 2009 4 10 54931 -0.1474 0.4660 0.30695 2009 4 11 54932 -0.1455 0.4691 0.30550 2009 4 12 54933 -0.1435 0.4722 0.30434 2009 4 13 54934 -0.1415 0.4753 0.30345 2009 4 14 54935 -0.1394 0.4784 0.30272 2009 4 15 54936 -0.1372 0.4814 0.30203 2009 4 16 54937 -0.1351 0.4844 0.30134 2009 4 17 54938 -0.1328 0.4874 0.30065 2009 4 18 54939 -0.1306 0.4903 0.29984 2009 4 19 54940 -0.1282 0.4932 0.29885 2009 4 20 54941 -0.1259 0.4961 0.29765 2009 4 21 54942 -0.1234 0.4989 0.29626 2009 4 22 54943 -0.1210 0.5017 0.29476 2009 4 23 54944 -0.1185 0.5044 0.29324 2009 4 24 54945 -0.1159 0.5071 0.29177 2009 4 25 54946 -0.1133 0.5098 0.29041 2009 4 26 54947 -0.1107 0.5124 0.28935 2009 4 27 54948 -0.1080 0.5150 0.28862 2009 4 28 54949 -0.1053 0.5176 0.28807 2009 4 29 54950 -0.1026 0.5201 0.28759 2009 4 30 54951 -0.0998 0.5226 0.28709 2009 5 1 54952 -0.0970 0.5250 0.28645 2009 5 2 54953 -0.0941 0.5274 0.28559 2009 5 3 54954 -0.0912 0.5297 0.28450 2009 5 4 54955 -0.0882 0.5320 0.28331 2009 5 5 54956 -0.0853 0.5343 0.28210 2009 5 6 54957 -0.0822 0.5365 0.28095 2009 5 7 54958 -0.0792 0.5387 0.27991 2009 5 8 54959 -0.0761 0.5408 0.27902 2009 5 9 54960 -0.0730 0.5429 0.27829 2009 5 10 54961 -0.0699 0.5449 0.27770 2009 5 11 54962 -0.0667 0.5469 0.27718 2009 5 12 54963 -0.0635 0.5488 0.27668 2009 5 13 54964 -0.0602 0.5507 0.27616 2009 5 14 54965 -0.0570 0.5525 0.27561 2009 5 15 54966 -0.0537 0.5543 0.27495 2009 5 16 54967 -0.0504 0.5560 0.27417 2009 5 17 54968 -0.0470 0.5577 0.27326 2009 5 18 54969 -0.0437 0.5594 0.27217 2009 5 19 54970 -0.0403 0.5610 0.27093 2009 5 20 54971 -0.0369 0.5625 0.26960 2009 5 21 54972 -0.0334 0.5640 0.26823 2009 5 22 54973 -0.0300 0.5654 0.26697 2009 5 23 54974 -0.0265 0.5668 0.26592 2009 5 24 54975 -0.0230 0.5681 0.26514 2009 5 25 54976 -0.0195 0.5694 0.26465 2009 5 26 54977 -0.0159 0.5706 0.26432 2009 5 27 54978 -0.0124 0.5718 0.26403 2009 5 28 54979 -0.0088 0.5729 0.26365 2009 5 29 54980 -0.0052 0.5739 0.26309 2009 5 30 54981 -0.0016 0.5749 0.26240 2009 5 31 54982 0.0020 0.5759 0.26167 2009 6 1 54983 0.0056 0.5768 0.26097 2009 6 2 54984 0.0093 0.5776 0.26039 2009 6 3 54985 0.0129 0.5784 0.25996 2009 6 4 54986 0.0166 0.5791 0.25973 2009 6 5 54987 0.0202 0.5798 0.25971 2009 6 6 54988 0.0239 0.5804 0.25990 2009 6 7 54989 0.0276 0.5810 0.26031 2009 6 8 54990 0.0313 0.5815 0.26093 2009 6 9 54991 0.0350 0.5819 0.26166 2009 6 10 54992 0.0387 0.5823 0.26236 2009 6 11 54993 0.0423 0.5827 0.26292 2009 6 12 54994 0.0461 0.5829 0.26334 2009 6 13 54995 0.0498 0.5832 0.26359 2009 6 14 54996 0.0535 0.5833 0.26364 2009 6 15 54997 0.0572 0.5834 0.26353 2009 6 16 54998 0.0609 0.5835 0.26334 2009 6 17 54999 0.0646 0.5835 0.26320 2009 6 18 55000 0.0682 0.5834 0.26316 2009 6 19 55001 0.0719 0.5833 0.26323 2009 6 20 55002 0.0756 0.5832 0.26343 2009 6 21 55003 0.0793 0.5829 0.26381 2009 6 22 55004 0.0830 0.5827 0.26436 2009 6 23 55005 0.0866 0.5823 0.26498 2009 6 24 55006 0.0903 0.5819 0.26544 2009 6 25 55007 0.0939 0.5815 0.26561 2009 6 26 55008 0.0976 0.5810 0.26548 2009 6 27 55009 0.1012 0.5804 0.26514 2009 6 28 55010 0.1048 0.5798 0.26473 2009 6 29 55011 0.1084 0.5792 0.26443 2009 6 30 55012 0.1120 0.5784 0.26430 2009 7 1 55013 0.1156 0.5777 0.26442 2009 7 2 55014 0.1191 0.5768 0.26477 2009 7 3 55015 0.1226 0.5759 0.26531 2009 7 4 55016 0.1262 0.5750 0.26605 2009 7 5 55017 0.1297 0.5740 0.26691 2009 7 6 55018 0.1331 0.5730 0.26789 2009 7 7 55019 0.1366 0.5719 0.26886 2009 7 8 55020 0.1400 0.5707 0.26970 2009 7 9 55021 0.1434 0.5695 0.27038 2009 7 10 55022 0.1468 0.5683 0.27085 2009 7 11 55023 0.1502 0.5670 0.27106 2009 7 12 55024 0.1535 0.5656 0.27108 2009 7 13 55025 0.1568 0.5642 0.27097 2009 7 14 55026 0.1601 0.5627 0.27084 2009 7 15 55027 0.1634 0.5612 0.27072 2009 7 16 55028 0.1666 0.5597 0.27070 2009 7 17 55029 0.1698 0.5581 0.27087 2009 7 18 55030 0.1730 0.5564 0.27122 2009 7 19 55031 0.1762 0.5547 0.27167 2009 7 20 55032 0.1793 0.5530 0.27218 2009 7 21 55033 0.1824 0.5512 0.27269 2009 7 22 55034 0.1854 0.5493 0.27297 2009 7 23 55035 0.1884 0.5474 0.27295 2009 7 24 55036 0.1914 0.5455 0.27263 2009 7 25 55037 0.1944 0.5435 0.27216 2009 7 26 55038 0.1973 0.5415 0.27170 2009 7 27 55039 0.2001 0.5394 0.27135 2009 7 28 55040 0.2030 0.5373 0.27120 2009 7 29 55041 0.2058 0.5351 0.27131 2009 7 30 55042 0.2085 0.5329 0.27165 2009 7 31 55043 0.2113 0.5307 0.27219 2009 8 1 55044 0.2139 0.5284 0.27285 2009 8 2 55045 0.2166 0.5260 0.27355 2009 8 3 55046 0.2192 0.5237 0.27429 2009 8 4 55047 0.2218 0.5213 0.27492 2009 8 5 55048 0.2243 0.5188 0.27536 2009 8 6 55049 0.2267 0.5163 0.27564 2009 8 7 55050 0.2292 0.5138 0.27574 2009 8 8 55051 0.2316 0.5113 0.27568 2009 8 9 55052 0.2339 0.5087 0.27550 2009 8 10 55053 0.2362 0.5060 0.27527 2009 8 11 55054 0.2385 0.5034 0.27504 2009 8 12 55055 0.2407 0.5007 0.27489 2009 8 13 55056 0.2428 0.4979 0.27491 2009 8 14 55057 0.2449 0.4951 0.27515 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) 54673 -66.99 .17 -7.98 .34 54674 -67.22 .13 -8.01 .10 54675 -67.34 .13 -8.10 .10 54676 -67.25 .74 -8.21 .11 54677 -67.05 .74 -8.26 .34 54678 -66.91 .74 -8.15 .34 54679 -66.90 .74 -7.94 .34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 54673 0.117 0.068 -0.423 0.340 54674 0.119 0.052 -0.434 0.100 54675 0.115 0.052 -0.440 0.100 54676 0.120 0.294 -0.432 0.110 54677 0.140 0.294 -0.442 0.340 54678 0.178 0.294 -0.448 0.340 54679 0.206 0.294 -0.434 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.