********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 28 August 2008 Vol. XXI No. 035 ______________________________________________________________________ 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 ********************************************************************** * This bulletin was re-issued to fix the missing combination data * * for August 28, 2008. * * * * 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 22 54700 .29706 .00009 .35225 .00009 -.460784 .000013 8 8 23 54701 .29805 .00009 .34902 .00010 -.461253 .000014 8 8 24 54702 .29852 .00009 .34605 .00009 -.461497 .000014 8 8 25 54703 .29824 .00009 .34296 .00009 -.461589 .000014 8 8 26 54704 .29790 .00009 .33944 .00009 -.461634 .000013 8 8 27 54705 .29803 .00009 .33585 .00009 -.461745 .000048 8 8 28 54706 .29821 .00009 .33252 .00009 -.462072 .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 = .0752 + .1194 cos A + .0204 sin A + .0996 cos C - .0459 sin C y = .3510 + .0306 cos A - .1057 sin A - .0459 cos C - .0996 sin C UT1-UTC = -.5060 - .00083 (MJD - 54714) - (UT2-UT1) where A = 2*pi*(MJD-54706)/365.25 and C = 2*pi*(MJD-54706)/435. TAI-UTC(MJD 54707) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-54706)**0.80 S t = 0.00025 (MJD-54706)**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 29 54707 0.2982 0.3291 -0.46268 2008 8 30 54708 0.2981 0.3257 -0.46353 2008 8 31 54709 0.2979 0.3224 -0.46452 2008 9 1 54710 0.2975 0.3190 -0.46552 2008 9 2 54711 0.2970 0.3156 -0.46642 2008 9 3 54712 0.2965 0.3121 -0.46713 2008 9 4 54713 0.2959 0.3087 -0.46762 2008 9 5 54714 0.2952 0.3052 -0.46789 2008 9 6 54715 0.2945 0.3017 -0.46798 2008 9 7 54716 0.2937 0.2982 -0.46798 2008 9 8 54717 0.2928 0.2947 -0.46799 2008 9 9 54718 0.2919 0.2912 -0.46807 2008 9 10 54719 0.2909 0.2878 -0.46826 2008 9 11 54720 0.2898 0.2843 -0.46860 2008 9 12 54721 0.2887 0.2809 -0.46917 2008 9 13 54722 0.2875 0.2774 -0.46998 2008 9 14 54723 0.2863 0.2740 -0.47103 2008 9 15 54724 0.2849 0.2706 -0.47227 2008 9 16 54725 0.2836 0.2672 -0.47363 2008 9 17 54726 0.2821 0.2638 -0.47500 2008 9 18 54727 0.2807 0.2605 -0.47625 2008 9 19 54728 0.2791 0.2571 -0.47731 2008 9 20 54729 0.2775 0.2538 -0.47814 2008 9 21 54730 0.2759 0.2505 -0.47879 2008 9 22 54731 0.2741 0.2473 -0.47937 2008 9 23 54732 0.2724 0.2440 -0.47999 2008 9 24 54733 0.2705 0.2408 -0.48077 2008 9 25 54734 0.2687 0.2376 -0.48181 2008 9 26 54735 0.2667 0.2344 -0.48310 2008 9 27 54736 0.2647 0.2313 -0.48460 2008 9 28 54737 0.2627 0.2281 -0.48622 2008 9 29 54738 0.2606 0.2251 -0.48785 2008 9 30 54739 0.2585 0.2220 -0.48938 2008 10 1 54740 0.2563 0.2190 -0.49074 2008 10 2 54741 0.2540 0.2160 -0.49191 2008 10 3 54742 0.2517 0.2130 -0.49288 2008 10 4 54743 0.2494 0.2101 -0.49369 2008 10 5 54744 0.2470 0.2072 -0.49441 2008 10 6 54745 0.2446 0.2043 -0.49510 2008 10 7 54746 0.2421 0.2015 -0.49585 2008 10 8 54747 0.2395 0.1987 -0.49672 2008 10 9 54748 0.2369 0.1960 -0.49779 2008 10 10 54749 0.2343 0.1933 -0.49908 2008 10 11 54750 0.2317 0.1906 -0.50062 2008 10 12 54751 0.2289 0.1880 -0.50238 2008 10 13 54752 0.2262 0.1854 -0.50430 2008 10 14 54753 0.2234 0.1829 -0.50626 2008 10 15 54754 0.2205 0.1803 -0.50813 2008 10 16 54755 0.2176 0.1779 -0.50982 2008 10 17 54756 0.2147 0.1755 -0.51124 2008 10 18 54757 0.2118 0.1731 -0.51243 2008 10 19 54758 0.2088 0.1708 -0.51346 2008 10 20 54759 0.2057 0.1685 -0.51448 2008 10 21 54760 0.2026 0.1662 -0.51561 2008 10 22 54761 0.1995 0.1640 -0.51693 2008 10 23 54762 0.1964 0.1619 -0.51847 2008 10 24 54763 0.1932 0.1598 -0.52018 2008 10 25 54764 0.1900 0.1577 -0.52199 2008 10 26 54765 0.1867 0.1557 -0.52381 2008 10 27 54766 0.1834 0.1538 -0.52555 2008 10 28 54767 0.1801 0.1518 -0.52713 2008 10 29 54768 0.1768 0.1500 -0.52853 2008 10 30 54769 0.1734 0.1482 -0.52972 2008 10 31 54770 0.1700 0.1464 -0.53074 2008 11 1 54771 0.1665 0.1447 -0.53164 2008 11 2 54772 0.1631 0.1431 -0.53248 2008 11 3 54773 0.1596 0.1415 -0.53333 2008 11 4 54774 0.1561 0.1399 -0.53426 2008 11 5 54775 0.1525 0.1384 -0.53533 2008 11 6 54776 0.1489 0.1370 -0.53657 2008 11 7 54777 0.1454 0.1356 -0.53803 2008 11 8 54778 0.1417 0.1342 -0.53968 2008 11 9 54779 0.1381 0.1330 -0.54149 2008 11 10 54780 0.1345 0.1317 -0.54338 2008 11 11 54781 0.1308 0.1306 -0.54525 2008 11 12 54782 0.1271 0.1294 -0.54696 2008 11 13 54783 0.1234 0.1284 -0.54843 2008 11 14 54784 0.1197 0.1274 -0.54964 2008 11 15 54785 0.1159 0.1264 -0.55064 2008 11 16 54786 0.1122 0.1255 -0.55155 2008 11 17 54787 0.1084 0.1247 -0.55252 2008 11 18 54788 0.1046 0.1239 -0.55365 2008 11 19 54789 0.1008 0.1232 -0.55498 2008 11 20 54790 0.0970 0.1225 -0.55648 2008 11 21 54791 0.0932 0.1219 -0.55808 2008 11 22 54792 0.0894 0.1214 -0.55967 2008 11 23 54793 0.0855 0.1209 -0.56118 2008 11 24 54794 0.0817 0.1205 -0.56253 2008 11 25 54795 0.0779 0.1201 -0.56368 2008 11 26 54796 0.0740 0.1198 -0.56463 2008 11 27 54797 0.0702 0.1195 -0.56539 2008 11 28 54798 0.0663 0.1193 -0.56600 2008 11 29 54799 0.0624 0.1192 -0.56651 2008 11 30 54800 0.0586 0.1191 -0.56699 2008 12 1 54801 0.0547 0.1190 -0.56752 2008 12 2 54802 0.0509 0.1191 -0.56815 2008 12 3 54803 0.0470 0.1192 -0.56893 2008 12 4 54804 0.0432 0.1193 -0.56988 2008 12 5 54805 0.0393 0.1195 -0.57100 2008 12 6 54806 0.0355 0.1198 -0.57227 2008 12 7 54807 0.0316 0.1201 -0.57364 2008 12 8 54808 0.0278 0.1205 -0.57502 2008 12 9 54809 0.0240 0.1209 -0.57630 2008 12 10 54810 0.0202 0.1214 -0.57740 2008 12 11 54811 0.0163 0.1220 -0.57826 2008 12 12 54812 0.0126 0.1226 -0.57891 2008 12 13 54813 0.0088 0.1233 -0.57943 2008 12 14 54814 0.0050 0.1240 -0.57998 2008 12 15 54815 0.0012 0.1248 -0.58079 2008 12 16 54816 -0.0025 0.1256 -0.58182 2008 12 17 54817 -0.0062 0.1265 -0.58306 2008 12 18 54818 -0.0099 0.1275 -0.58445 2008 12 19 54819 -0.0136 0.1285 -0.58586 2008 12 20 54820 -0.0173 0.1296 -0.58719 2008 12 21 54821 -0.0210 0.1307 -0.58836 2008 12 22 54822 -0.0246 0.1319 -0.58933 2008 12 23 54823 -0.0282 0.1331 -0.59010 2008 12 24 54824 -0.0318 0.1344 -0.59067 2008 12 25 54825 -0.0354 0.1357 -0.59108 2008 12 26 54826 -0.0389 0.1371 -0.59140 2008 12 27 54827 -0.0425 0.1386 -0.59169 2008 12 28 54828 -0.0460 0.1401 -0.59201 2008 12 29 54829 -0.0494 0.1417 -0.59245 2008 12 30 54830 -0.0529 0.1433 -0.59304 2008 12 31 54831 -0.0563 0.1449 -0.59381 2009 1 1 54832 -0.0597 0.1467 0.40525 2009 1 2 54833 -0.0630 0.1484 0.40415 2009 1 3 54834 -0.0664 0.1502 0.40294 2009 1 4 54835 -0.0697 0.1521 0.40170 2009 1 5 54836 -0.0729 0.1540 0.40051 2009 1 6 54837 -0.0762 0.1560 0.39946 2009 1 7 54838 -0.0794 0.1580 0.39861 2009 1 8 54839 -0.0825 0.1601 0.39796 2009 1 9 54840 -0.0856 0.1622 0.39744 2009 1 10 54841 -0.0887 0.1644 0.39694 2009 1 11 54842 -0.0918 0.1666 0.39632 2009 1 12 54843 -0.0948 0.1688 0.39547 2009 1 13 54844 -0.0978 0.1712 0.39436 2009 1 14 54845 -0.1007 0.1735 0.39305 2009 1 15 54846 -0.1036 0.1759 0.39165 2009 1 16 54847 -0.1064 0.1783 0.39028 2009 1 17 54848 -0.1093 0.1808 0.38906 2009 1 18 54849 -0.1120 0.1833 0.38804 2009 1 19 54850 -0.1148 0.1859 0.38725 2009 1 20 54851 -0.1174 0.1885 0.38666 2009 1 21 54852 -0.1201 0.1912 0.38624 2009 1 22 54853 -0.1227 0.1939 0.38592 2009 1 23 54854 -0.1252 0.1966 0.38565 2009 1 24 54855 -0.1277 0.1994 0.38535 2009 1 25 54856 -0.1302 0.2022 0.38495 2009 1 26 54857 -0.1326 0.2050 0.38439 2009 1 27 54858 -0.1349 0.2079 0.38365 2009 1 28 54859 -0.1372 0.2108 0.38271 2009 1 29 54860 -0.1395 0.2138 0.38160 2009 1 30 54861 -0.1417 0.2168 0.38037 2009 1 31 54862 -0.1439 0.2198 0.37911 2009 2 1 54863 -0.1460 0.2229 0.37788 2009 2 2 54864 -0.1480 0.2259 0.37677 2009 2 3 54865 -0.1500 0.2291 0.37584 2009 2 4 54866 -0.1520 0.2322 0.37510 2009 2 5 54867 -0.1539 0.2354 0.37451 2009 2 6 54868 -0.1557 0.2386 0.37396 2009 2 7 54869 -0.1575 0.2419 0.37333 2009 2 8 54870 -0.1593 0.2451 0.37251 2009 2 9 54871 -0.1609 0.2484 0.37141 2009 2 10 54872 -0.1626 0.2517 0.37004 2009 2 11 54873 -0.1641 0.2551 0.36851 2009 2 12 54874 -0.1657 0.2585 0.36693 2009 2 13 54875 -0.1671 0.2619 0.36544 2009 2 14 54876 -0.1685 0.2653 0.36413 2009 2 15 54877 -0.1699 0.2687 0.36306 2009 2 16 54878 -0.1711 0.2722 0.36221 2009 2 17 54879 -0.1724 0.2756 0.36155 2009 2 18 54880 -0.1735 0.2791 0.36102 2009 2 19 54881 -0.1747 0.2827 0.36056 2009 2 20 54882 -0.1757 0.2862 0.36009 2009 2 21 54883 -0.1767 0.2897 0.35953 2009 2 22 54884 -0.1776 0.2933 0.35884 2009 2 23 54885 -0.1785 0.2969 0.35797 2009 2 24 54886 -0.1793 0.3005 0.35689 2009 2 25 54887 -0.1801 0.3041 0.35563 2009 2 26 54888 -0.1808 0.3077 0.35422 2009 2 27 54889 -0.1814 0.3113 0.35276 2009 2 28 54890 -0.1820 0.3150 0.35134 2009 3 1 54891 -0.1825 0.3186 0.35004 2009 3 2 54892 -0.1830 0.3223 0.34894 2009 3 3 54893 -0.1834 0.3260 0.34807 2009 3 4 54894 -0.1837 0.3296 0.34741 2009 3 5 54895 -0.1840 0.3333 0.34688 2009 3 6 54896 -0.1842 0.3370 0.34638 2009 3 7 54897 -0.1843 0.3407 0.34578 2009 3 8 54898 -0.1844 0.3444 0.34499 2009 3 9 54899 -0.1845 0.3481 0.34398 2009 3 10 54900 -0.1844 0.3518 0.34277 2009 3 11 54901 -0.1843 0.3555 0.34147 2009 3 12 54902 -0.1842 0.3592 0.34019 2009 3 13 54903 -0.1840 0.3628 0.33904 2009 3 14 54904 -0.1837 0.3665 0.33809 2009 3 15 54905 -0.1834 0.3702 0.33737 2009 3 16 54906 -0.1830 0.3739 0.33686 2009 3 17 54907 -0.1825 0.3776 0.33648 2009 3 18 54908 -0.1820 0.3812 0.33617 2009 3 19 54909 -0.1814 0.3849 0.33585 2009 3 20 54910 -0.1808 0.3885 0.33544 2009 3 21 54911 -0.1801 0.3922 0.33486 2009 3 22 54912 -0.1794 0.3958 0.33408 2009 3 23 54913 -0.1785 0.3994 0.33306 2009 3 24 54914 -0.1777 0.4031 0.33180 2009 3 25 54915 -0.1767 0.4067 0.33033 2009 3 26 54916 -0.1757 0.4102 0.32873 2009 3 27 54917 -0.1747 0.4138 0.32707 2009 3 28 54918 -0.1736 0.4174 0.32546 2009 3 29 54919 -0.1724 0.4209 0.32399 2009 3 30 54920 -0.1712 0.4244 0.32271 2009 3 31 54921 -0.1699 0.4279 0.32162 2009 4 1 54922 -0.1686 0.4314 0.32066 2009 4 2 54923 -0.1672 0.4349 0.31973 2009 4 3 54924 -0.1658 0.4383 0.31869 2009 4 4 54925 -0.1642 0.4417 0.31741 2009 4 5 54926 -0.1627 0.4451 0.31586 2009 4 6 54927 -0.1611 0.4485 0.31408 2009 4 7 54928 -0.1594 0.4519 0.31215 2009 4 8 54929 -0.1577 0.4552 0.31019 2009 4 9 54930 -0.1559 0.4585 0.30830 2009 4 10 54931 -0.1541 0.4618 0.30659 2009 4 11 54932 -0.1522 0.4650 0.30513 2009 4 12 54933 -0.1503 0.4682 0.30388 2009 4 13 54934 -0.1483 0.4714 0.30278 2009 4 14 54935 -0.1462 0.4746 0.30177 2009 4 15 54936 -0.1442 0.4777 0.30083 2009 4 16 54937 -0.1420 0.4808 0.29991 2009 4 17 54938 -0.1398 0.4839 0.29895 2009 4 18 54939 -0.1376 0.4869 0.29793 2009 4 19 54940 -0.1353 0.4899 0.29678 2009 4 20 54941 -0.1330 0.4929 0.29550 2009 4 21 54942 -0.1306 0.4958 0.29409 2009 4 22 54943 -0.1282 0.4987 0.29259 2009 4 23 54944 -0.1257 0.5016 0.29105 2009 4 24 54945 -0.1232 0.5044 0.28955 2009 4 25 54946 -0.1206 0.5072 0.28820 2009 4 26 54947 -0.1180 0.5100 0.28702 2009 4 27 54948 -0.1154 0.5127 0.28605 2009 4 28 54949 -0.1127 0.5153 0.28531 2009 4 29 54950 -0.1100 0.5180 0.28464 2009 4 30 54951 -0.1072 0.5205 0.28390 2009 5 1 54952 -0.1044 0.5231 0.28300 2009 5 2 54953 -0.1016 0.5256 0.28185 2009 5 3 54954 -0.0987 0.5281 0.28044 2009 5 4 54955 -0.0957 0.5305 0.27885 2009 5 5 54956 -0.0928 0.5328 0.27718 2009 5 6 54957 -0.0898 0.5352 0.27554 2009 5 7 54958 -0.0867 0.5375 0.27404 2009 5 8 54959 -0.0837 0.5397 0.27281 2009 5 9 54960 -0.0806 0.5419 0.27186 2009 5 10 54961 -0.0774 0.5440 0.27120 2009 5 11 54962 -0.0742 0.5461 0.27077 2009 5 12 54963 -0.0710 0.5482 0.27045 2009 5 13 54964 -0.0678 0.5502 0.27014 2009 5 14 54965 -0.0645 0.5521 0.26978 2009 5 15 54966 -0.0612 0.5540 0.26940 2009 5 16 54967 -0.0579 0.5559 0.26890 2009 5 17 54968 -0.0546 0.5577 0.26823 2009 5 18 54969 -0.0512 0.5594 0.26737 2009 5 19 54970 -0.0478 0.5611 0.26637 2009 5 20 54971 -0.0444 0.5628 0.26532 2009 5 21 54972 -0.0409 0.5644 0.26431 2009 5 22 54973 -0.0374 0.5659 0.26340 2009 5 23 54974 -0.0339 0.5674 0.26264 2009 5 24 54975 -0.0304 0.5689 0.26219 2009 5 25 54976 -0.0269 0.5702 0.26204 2009 5 26 54977 -0.0233 0.5716 0.26200 2009 5 27 54978 -0.0197 0.5729 0.26196 2009 5 28 54979 -0.0161 0.5741 0.26181 2009 5 29 54980 -0.0125 0.5752 0.26148 2009 5 30 54981 -0.0089 0.5764 0.26094 2009 5 31 54982 -0.0053 0.5774 0.26023 2009 6 1 54983 -0.0016 0.5784 0.25951 2009 6 2 54984 0.0021 0.5794 0.25889 2009 6 3 54985 0.0058 0.5803 0.25841 2009 6 4 54986 0.0095 0.5811 0.25810 2009 6 5 54987 0.0132 0.5819 0.25794 2009 6 6 54988 0.0169 0.5826 0.25793 2009 6 7 54989 0.0206 0.5833 0.25801 2009 6 8 54990 0.0243 0.5839 0.25811 2009 6 9 54991 0.0281 0.5845 0.25818 2009 6 10 54992 0.0318 0.5850 0.25818 2009 6 11 54993 0.0356 0.5854 0.25810 2009 6 12 54994 0.0393 0.5858 0.25789 2009 6 13 54995 0.0431 0.5861 0.25756 2009 6 14 54996 0.0468 0.5864 0.25709 2009 6 15 54997 0.0506 0.5866 0.25650 2009 6 16 54998 0.0543 0.5868 0.25580 2009 6 17 54999 0.0581 0.5869 0.25505 2009 6 18 55000 0.0618 0.5869 0.25433 2009 6 19 55001 0.0656 0.5869 0.25374 2009 6 20 55002 0.0693 0.5869 0.25337 2009 6 21 55003 0.0731 0.5867 0.25326 2009 6 22 55004 0.0768 0.5865 0.25336 2009 6 23 55005 0.0805 0.5863 0.25353 2009 6 24 55006 0.0843 0.5860 0.25364 2009 6 25 55007 0.0880 0.5857 0.25359 2009 6 26 55008 0.0917 0.5853 0.25333 2009 6 27 55009 0.0954 0.5848 0.25295 2009 6 28 55010 0.0991 0.5843 0.25260 2009 6 29 55011 0.1027 0.5837 0.25236 2009 6 30 55012 0.1064 0.5831 0.25232 2009 7 1 55013 0.1100 0.5824 0.25249 2009 7 2 55014 0.1137 0.5816 0.25288 2009 7 3 55015 0.1173 0.5808 0.25346 2009 7 4 55016 0.1209 0.5800 0.25421 2009 7 5 55017 0.1244 0.5791 0.25513 2009 7 6 55018 0.1280 0.5781 0.25619 2009 7 7 55019 0.1315 0.5771 0.25729 2009 7 8 55020 0.1351 0.5760 0.25830 2009 7 9 55021 0.1386 0.5749 0.25913 2009 7 10 55022 0.1420 0.5737 0.25980 2009 7 11 55023 0.1455 0.5725 0.26029 2009 7 12 55024 0.1489 0.5712 0.26060 2009 7 13 55025 0.1523 0.5699 0.26077 2009 7 14 55026 0.1557 0.5685 0.26092 2009 7 15 55027 0.1591 0.5671 0.26116 2009 7 16 55028 0.1624 0.5656 0.26153 2009 7 17 55029 0.1657 0.5641 0.26203 2009 7 18 55030 0.1690 0.5625 0.26264 2009 7 19 55031 0.1722 0.5608 0.26337 2009 7 20 55032 0.1754 0.5592 0.26419 2009 7 21 55033 0.1786 0.5574 0.26497 2009 7 22 55034 0.1817 0.5556 0.26550 2009 7 23 55035 0.1848 0.5538 0.26567 2009 7 24 55036 0.1879 0.5519 0.26554 2009 7 25 55037 0.1910 0.5500 0.26522 2009 7 26 55038 0.1940 0.5480 0.26490 2009 7 27 55039 0.1970 0.5460 0.26474 2009 7 28 55040 0.1999 0.5439 0.26481 2009 7 29 55041 0.2028 0.5418 0.26514 2009 7 30 55042 0.2057 0.5397 0.26570 2009 7 31 55043 0.2085 0.5375 0.26642 2009 8 1 55044 0.2113 0.5353 0.26727 2009 8 2 55045 0.2140 0.5330 0.26819 2009 8 3 55046 0.2167 0.5307 0.26915 2009 8 4 55047 0.2194 0.5283 0.27003 2009 8 5 55048 0.2220 0.5259 0.27075 2009 8 6 55049 0.2246 0.5234 0.27125 2009 8 7 55050 0.2271 0.5210 0.27154 2009 8 8 55051 0.2296 0.5184 0.27157 2009 8 9 55052 0.2321 0.5159 0.27143 2009 8 10 55053 0.2345 0.5133 0.27120 2009 8 11 55054 0.2368 0.5106 0.27099 2009 8 12 55055 0.2391 0.5080 0.27083 2009 8 13 55056 0.2414 0.5053 0.27081 2009 8 14 55057 0.2436 0.5025 0.27097 2009 8 15 55058 0.2458 0.4998 0.27127 2009 8 16 55059 0.2479 0.4970 0.27160 2009 8 17 55060 0.2500 0.4941 0.27188 2009 8 18 55061 0.2520 0.4912 0.27208 2009 8 19 55062 0.2540 0.4883 0.27198 2009 8 20 55063 0.2559 0.4854 0.27156 2009 8 21 55064 0.2578 0.4825 0.27086 2009 8 22 55065 0.2596 0.4795 0.27006 2009 8 23 55066 0.2614 0.4765 0.26932 2009 8 24 55067 0.2631 0.4734 0.26874 2009 8 25 55068 0.2648 0.4703 0.26838 2009 8 26 55069 0.2664 0.4672 0.26827 2009 8 27 55070 0.2680 0.4641 0.26838 2009 8 28 55071 0.2695 0.4610 0.26863 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) 54687 -69.83 .30 -7.90 .34 54688 -69.54 .22 -7.78 .34 54689 -69.29 .22 -7.69 .34 54690 -69.12 .74 -7.72 .34 54691 -69.04 .74 -7.82 .34 54692 -69.05 .74 -7.84 .34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 54687 -0.188 0.119 -0.357 0.340 54688 -0.166 0.088 -0.378 0.340 54689 -0.119 0.088 -0.381 0.340 54690 -0.055 0.294 -0.374 0.340 54691 0.016 0.294 -0.373 0.340 54692 0.080 0.294 -0.361 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.