********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 27 May 2010 Vol. XXIII No. 021 ______________________________________________________________________ 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 = +0.0 seconds beginning 11 March 2010 at 0000 UTC = -0.1 seconds beginning 3 June 2010 at 0000 UTC Beginning 1 January 2009: TAI-UTC(BIPM) = 34.000 000 seconds ________________________________________________________________________ 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 10 5 21 55337 -.04154 .00009 0.43142 .00009 -0.041017 0.000015 10 5 22 55338 -.03945 .00009 0.43335 .00009 -0.042677 0.000016 10 5 23 55339 -.03750 .00009 0.43543 .00009 -0.044368 0.000014 10 5 24 55340 -.03570 .00009 0.43750 .00009 -0.045918 0.000014 10 5 25 55341 -.03404 .00009 0.43958 .00009 -0.047234 0.000011 10 5 26 55342 -.03255 .00009 0.44165 .00009 -0.048288 0.000013 10 5 27 55343 -.03144 .00009 0.44377 .00009 -0.049102 0.000012 _______________________________________________________________________ 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 = 0.0839 - 0.0076 cos A + 0.1051 sin A - 0.1020 cos C - 0.0069 sin C y = 0.3542 + 0.0951 cos A + 0.0042 sin A - 0.0069 cos C + 0.1020 sin C UT1-UTC = -0.0189 - 0.00085 (MJD - 55351) - (UT2-UT1) where A = 2*pi*(MJD-55343)/365.25 and C = 2*pi*(MJD-55343)/435. TAI-UTC(MJD 55344) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55343)**0.80 S t = 0.00025 (MJD-55343)**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) 2010 5 28 55344 -0.0300 0.4455 -0.04975 2010 5 29 55345 -0.0287 0.4473 -0.05028 2010 5 30 55346 -0.0272 0.4490 -0.05072 2010 5 31 55347 -0.0256 0.4506 -0.05118 2010 6 1 55348 -0.0239 0.4523 -0.05172 2010 6 2 55349 -0.0221 0.4539 -0.05237 2010 6 3 55350 -0.0202 0.4555 -0.05314 2010 6 4 55351 -0.0183 0.4570 -0.05400 2010 6 5 55352 -0.0164 0.4586 -0.05491 2010 6 6 55353 -0.0145 0.4601 -0.05584 2010 6 7 55354 -0.0125 0.4616 -0.05672 2010 6 8 55355 -0.0105 0.4631 -0.05754 2010 6 9 55356 -0.0085 0.4645 -0.05824 2010 6 10 55357 -0.0065 0.4659 -0.05880 2010 6 11 55358 -0.0044 0.4673 -0.05922 2010 6 12 55359 -0.0023 0.4686 -0.05954 2010 6 13 55360 -0.0003 0.4700 -0.05982 2010 6 14 55361 0.0018 0.4712 -0.06016 2010 6 15 55362 0.0039 0.4725 -0.06064 2010 6 16 55363 0.0061 0.4737 -0.06133 2010 6 17 55364 0.0082 0.4749 -0.06219 2010 6 18 55365 0.0104 0.4760 -0.06313 2010 6 19 55366 0.0125 0.4771 -0.06402 2010 6 20 55367 0.0147 0.4782 -0.06477 2010 6 21 55368 0.0169 0.4792 -0.06530 2010 6 22 55369 0.0191 0.4802 -0.06560 2010 6 23 55370 0.0214 0.4812 -0.06567 2010 6 24 55371 0.0236 0.4821 -0.06556 2010 6 25 55372 0.0258 0.4830 -0.06532 2010 6 26 55373 0.0281 0.4839 -0.06503 2010 6 27 55374 0.0303 0.4847 -0.06476 2010 6 28 55375 0.0326 0.4855 -0.06459 2010 6 29 55376 0.0349 0.4863 -0.06453 2010 6 30 55377 0.0372 0.4870 -0.06459 2010 7 1 55378 0.0394 0.4877 -0.06476 2010 7 2 55379 0.0417 0.4883 -0.06499 2010 7 3 55380 0.0440 0.4890 -0.06526 2010 7 4 55381 0.0463 0.4895 -0.06550 2010 7 5 55382 0.0486 0.4901 -0.06567 2010 7 6 55383 0.0510 0.4906 -0.06572 2010 7 7 55384 0.0533 0.4911 -0.06563 2010 7 8 55385 0.0556 0.4915 -0.06541 2010 7 9 55386 0.0579 0.4919 -0.06506 2010 7 10 55387 0.0602 0.4922 -0.06466 2010 7 11 55388 0.0625 0.4926 -0.06430 2010 7 12 55389 0.0648 0.4929 -0.06408 2010 7 13 55390 0.0672 0.4931 -0.06410 2010 7 14 55391 0.0695 0.4933 -0.06436 2010 7 15 55392 0.0718 0.4935 -0.06480 2010 7 16 55393 0.0741 0.4937 -0.06530 2010 7 17 55394 0.0764 0.4938 -0.06573 2010 7 18 55395 0.0787 0.4938 -0.06598 2010 7 19 55396 0.0810 0.4939 -0.06600 2010 7 20 55397 0.0833 0.4939 -0.06578 2010 7 21 55398 0.0856 0.4938 -0.06536 2010 7 22 55399 0.0878 0.4938 -0.06482 2010 7 23 55400 0.0901 0.4937 -0.06423 2010 7 24 55401 0.0924 0.4935 -0.06368 2010 7 25 55402 0.0946 0.4934 -0.06321 2010 7 26 55403 0.0969 0.4931 -0.06287 2010 7 27 55404 0.0991 0.4929 -0.06269 2010 7 28 55405 0.1013 0.4926 -0.06264 2010 7 29 55406 0.1036 0.4923 -0.06270 2010 7 30 55407 0.1058 0.4920 -0.06282 2010 7 31 55408 0.1080 0.4916 -0.06295 2010 8 1 55409 0.1101 0.4911 -0.06304 2010 8 2 55410 0.1123 0.4907 -0.06306 2010 8 3 55411 0.1145 0.4902 -0.06299 2010 8 4 55412 0.1166 0.4897 -0.06280 2010 8 5 55413 0.1187 0.4891 -0.06253 2010 8 6 55414 0.1209 0.4886 -0.06220 2010 8 7 55415 0.1230 0.4879 -0.06192 2010 8 8 55416 0.1250 0.4873 -0.06177 2010 8 9 55417 0.1271 0.4866 -0.06187 2010 8 10 55418 0.1292 0.4859 -0.06226 2010 8 11 55419 0.1312 0.4852 -0.06291 2010 8 12 55420 0.1332 0.4844 -0.06372 2010 8 13 55421 0.1352 0.4836 -0.06454 2010 8 14 55422 0.1372 0.4827 -0.06523 2010 8 15 55423 0.1391 0.4819 -0.06567 2010 8 16 55424 0.1411 0.4810 -0.06585 2010 8 17 55425 0.1430 0.4800 -0.06581 2010 8 18 55426 0.1449 0.4791 -0.06561 2010 8 19 55427 0.1468 0.4781 -0.06534 2010 8 20 55428 0.1486 0.4771 -0.06509 2010 8 21 55429 0.1505 0.4760 -0.06490 2010 8 22 55430 0.1523 0.4750 -0.06484 2010 8 23 55431 0.1541 0.4739 -0.06492 2010 8 24 55432 0.1559 0.4727 -0.06514 2010 8 25 55433 0.1576 0.4716 -0.06550 2010 8 26 55434 0.1593 0.4704 -0.06594 2010 8 27 55435 0.1610 0.4692 -0.06641 2010 8 28 55436 0.1627 0.4680 -0.06687 2010 8 29 55437 0.1643 0.4667 -0.06728 2010 8 30 55438 0.1660 0.4654 -0.06759 2010 8 31 55439 0.1676 0.4641 -0.06779 2010 9 1 55440 0.1691 0.4628 -0.06789 2010 9 2 55441 0.1707 0.4614 -0.06793 2010 9 3 55442 0.1722 0.4601 -0.06798 2010 9 4 55443 0.1737 0.4587 -0.06813 2010 9 5 55444 0.1752 0.4572 -0.06848 2010 9 6 55445 0.1766 0.4558 -0.06912 2010 9 7 55446 0.1780 0.4543 -0.07006 2010 9 8 55447 0.1794 0.4528 -0.07123 2010 9 9 55448 0.1808 0.4513 -0.07252 2010 9 10 55449 0.1821 0.4498 -0.07376 2010 9 11 55450 0.1834 0.4482 -0.07481 2010 9 12 55451 0.1847 0.4467 -0.07559 2010 9 13 55452 0.1859 0.4451 -0.07613 2010 9 14 55453 0.1871 0.4435 -0.07648 2010 9 15 55454 0.1883 0.4418 -0.07672 2010 9 16 55455 0.1894 0.4402 -0.07695 2010 9 17 55456 0.1906 0.4385 -0.07723 2010 9 18 55457 0.1917 0.4369 -0.07762 2010 9 19 55458 0.1927 0.4352 -0.07815 2010 9 20 55459 0.1938 0.4335 -0.07881 2010 9 21 55460 0.1948 0.4317 -0.07960 2010 9 22 55461 0.1957 0.4300 -0.08047 2010 9 23 55462 0.1967 0.4283 -0.08139 2010 9 24 55463 0.1976 0.4265 -0.08230 2010 9 25 55464 0.1984 0.4247 -0.08315 2010 9 26 55465 0.1993 0.4229 -0.08391 2010 9 27 55466 0.2001 0.4211 -0.08455 2010 9 28 55467 0.2009 0.4193 -0.08509 2010 9 29 55468 0.2016 0.4175 -0.08555 2010 9 30 55469 0.2023 0.4157 -0.08599 2010 10 1 55470 0.2030 0.4138 -0.08650 2010 10 2 55471 0.2037 0.4120 -0.08715 2010 10 3 55472 0.2043 0.4101 -0.08804 2010 10 4 55473 0.2049 0.4082 -0.08920 2010 10 5 55474 0.2054 0.4063 -0.09062 2010 10 6 55475 0.2059 0.4045 -0.09221 2010 10 7 55476 0.2064 0.4026 -0.09384 2010 10 8 55477 0.2069 0.4007 -0.09536 2010 10 9 55478 0.2073 0.3988 -0.09666 2010 10 10 55479 0.2077 0.3968 -0.09770 2010 10 11 55480 0.2080 0.3949 -0.09850 2010 10 12 55481 0.2084 0.3930 -0.09915 2010 10 13 55482 0.2087 0.3911 -0.09974 2010 10 14 55483 0.2089 0.3892 -0.10036 2010 10 15 55484 0.2091 0.3872 -0.10106 2010 10 16 55485 0.2093 0.3853 -0.10189 2010 10 17 55486 0.2095 0.3834 -0.10283 2010 10 18 55487 0.2096 0.3814 -0.10389 2010 10 19 55488 0.2097 0.3795 -0.10503 2010 10 20 55489 0.2098 0.3776 -0.10623 2010 10 21 55490 0.2098 0.3756 -0.10741 2010 10 22 55491 0.2098 0.3737 -0.10855 2010 10 23 55492 0.2098 0.3718 -0.10959 2010 10 24 55493 0.2097 0.3698 -0.11051 2010 10 25 55494 0.2097 0.3679 -0.11132 2010 10 26 55495 0.2095 0.3660 -0.11202 2010 10 27 55496 0.2094 0.3641 -0.11268 2010 10 28 55497 0.2092 0.3621 -0.11337 2010 10 29 55498 0.2090 0.3602 -0.11416 2010 10 30 55499 0.2087 0.3583 -0.11513 2010 10 31 55500 0.2084 0.3564 -0.11633 2010 11 1 55501 0.2081 0.3545 -0.11776 2010 11 2 55502 0.2078 0.3526 -0.11937 2010 11 3 55503 0.2074 0.3507 -0.12105 2010 11 4 55504 0.2070 0.3489 -0.12268 2010 11 5 55505 0.2066 0.3470 -0.12414 2010 11 6 55506 0.2061 0.3451 -0.12537 2010 11 7 55507 0.2057 0.3433 -0.12635 2010 11 8 55508 0.2051 0.3414 -0.12714 2010 11 9 55509 0.2046 0.3396 -0.12782 2010 11 10 55510 0.2040 0.3378 -0.12850 2010 11 11 55511 0.2034 0.3359 -0.12923 2010 11 12 55512 0.2028 0.3341 -0.13006 2010 11 13 55513 0.2021 0.3324 -0.13101 2010 11 14 55514 0.2015 0.3306 -0.13206 2010 11 15 55515 0.2007 0.3288 -0.13319 2010 11 16 55516 0.2000 0.3270 -0.13437 2010 11 17 55517 0.1992 0.3253 -0.13555 2010 11 18 55518 0.1985 0.3236 -0.13669 2010 11 19 55519 0.1976 0.3219 -0.13774 2010 11 20 55520 0.1968 0.3202 -0.13869 2010 11 21 55521 0.1959 0.3185 -0.13951 2010 11 22 55522 0.1950 0.3168 -0.14023 2010 11 23 55523 0.1941 0.3151 -0.14089 2010 11 24 55524 0.1932 0.3135 -0.14157 2010 11 25 55525 0.1922 0.3119 -0.14234 2010 11 26 55526 0.1912 0.3103 -0.14328 2010 11 27 55527 0.1902 0.3087 -0.14444 2010 11 28 55528 0.1892 0.3071 -0.14584 2010 11 29 55529 0.1881 0.3055 -0.14741 2010 11 30 55530 0.1871 0.3040 -0.14908 2010 12 1 55531 0.1860 0.3025 -0.15073 2010 12 2 55532 0.1848 0.3010 -0.15225 2010 12 3 55533 0.1837 0.2995 -0.15358 2010 12 4 55534 0.1825 0.2980 -0.15467 2010 12 5 55535 0.1813 0.2966 -0.15555 2010 12 6 55536 0.1801 0.2951 -0.15629 2010 12 7 55537 0.1789 0.2937 -0.15697 2010 12 8 55538 0.1777 0.2923 -0.15767 2010 12 9 55539 0.1764 0.2910 -0.15844 2010 12 10 55540 0.1751 0.2896 -0.15931 2010 12 11 55541 0.1738 0.2883 -0.16026 2010 12 12 55542 0.1725 0.2870 -0.16126 2010 12 13 55543 0.1712 0.2857 -0.16228 2010 12 14 55544 0.1699 0.2845 -0.16327 2010 12 15 55545 0.1685 0.2832 -0.16420 2010 12 16 55546 0.1671 0.2820 -0.16503 2010 12 17 55547 0.1657 0.2808 -0.16572 2010 12 18 55548 0.1643 0.2797 -0.16626 2010 12 19 55549 0.1629 0.2785 -0.16666 2010 12 20 55550 0.1615 0.2774 -0.16693 2010 12 21 55551 0.1600 0.2763 -0.16714 2010 12 22 55552 0.1585 0.2752 -0.16737 2010 12 23 55553 0.1571 0.2742 -0.16771 2010 12 24 55554 0.1556 0.2731 -0.16823 2010 12 25 55555 0.1541 0.2721 -0.16896 2010 12 26 55556 0.1526 0.2712 -0.16984 2010 12 27 55557 0.1510 0.2702 -0.17081 2010 12 28 55558 0.1495 0.2693 -0.17175 2010 12 29 55559 0.1480 0.2684 -0.17259 2010 12 30 55560 0.1464 0.2675 -0.17328 2010 12 31 55561 0.1449 0.2667 -0.17381 2011 1 1 55562 0.1433 0.2658 -0.17418 2011 1 2 55563 0.1417 0.2650 -0.17441 2011 1 3 55564 0.1401 0.2643 -0.17457 2011 1 4 55565 0.1385 0.2635 -0.17472 2011 1 5 55566 0.1369 0.2628 -0.17494 2011 1 6 55567 0.1353 0.2621 -0.17530 2011 1 7 55568 0.1337 0.2614 -0.17578 2011 1 8 55569 0.1321 0.2608 -0.17637 2011 1 9 55570 0.1305 0.2601 -0.17706 2011 1 10 55571 0.1289 0.2595 -0.17780 2011 1 11 55572 0.1273 0.2590 -0.17850 2011 1 12 55573 0.1256 0.2584 -0.17912 2011 1 13 55574 0.1240 0.2579 -0.17964 2011 1 14 55575 0.1224 0.2574 -0.18009 2011 1 15 55576 0.1207 0.2570 -0.18049 2011 1 16 55577 0.1191 0.2565 -0.18079 2011 1 17 55578 0.1174 0.2561 -0.18102 2011 1 18 55579 0.1158 0.2557 -0.18126 2011 1 19 55580 0.1141 0.2554 -0.18164 2011 1 20 55581 0.1125 0.2550 -0.18223 2011 1 21 55582 0.1109 0.2547 -0.18306 2011 1 22 55583 0.1092 0.2544 -0.18409 2011 1 23 55584 0.1076 0.2542 -0.18523 2011 1 24 55585 0.1059 0.2540 -0.18637 2011 1 25 55586 0.1043 0.2538 -0.18740 2011 1 26 55587 0.1027 0.2536 -0.18825 2011 1 27 55588 0.1011 0.2534 -0.18896 2011 1 28 55589 0.0994 0.2533 -0.18950 2011 1 29 55590 0.0978 0.2532 -0.18992 2011 1 30 55591 0.0962 0.2531 -0.19028 2011 1 31 55592 0.0946 0.2531 -0.19066 2011 2 1 55593 0.0930 0.2531 -0.19111 2011 2 2 55594 0.0914 0.2531 -0.19173 2011 2 3 55595 0.0898 0.2531 -0.19250 2011 2 4 55596 0.0882 0.2532 -0.19338 2011 2 5 55597 0.0866 0.2532 -0.19439 2011 2 6 55598 0.0850 0.2534 -0.19545 2011 2 7 55599 0.0835 0.2535 -0.19645 2011 2 8 55600 0.0819 0.2536 -0.19730 2011 2 9 55601 0.0804 0.2538 -0.19801 2011 2 10 55602 0.0788 0.2540 -0.19866 2011 2 11 55603 0.0773 0.2542 -0.19926 2011 2 12 55604 0.0758 0.2545 -0.19978 2011 2 13 55605 0.0743 0.2548 -0.20023 2011 2 14 55606 0.0728 0.2551 -0.20069 2011 2 15 55607 0.0713 0.2554 -0.20128 2011 2 16 55608 0.0698 0.2557 -0.20211 2011 2 17 55609 0.0683 0.2561 -0.20320 2011 2 18 55610 0.0669 0.2565 -0.20455 2011 2 19 55611 0.0654 0.2569 -0.20613 2011 2 20 55612 0.0640 0.2574 -0.20779 2011 2 21 55613 0.0626 0.2578 -0.20940 2011 2 22 55614 0.0612 0.2583 -0.21086 2011 2 23 55615 0.0598 0.2588 -0.21211 2011 2 24 55616 0.0584 0.2593 -0.21312 2011 2 25 55617 0.0570 0.2599 -0.21392 2011 2 26 55618 0.0557 0.2604 -0.21464 2011 2 27 55619 0.0544 0.2610 -0.21536 2011 2 28 55620 0.0530 0.2616 -0.21617 2011 3 1 55621 0.0517 0.2623 -0.21711 2011 3 2 55622 0.0505 0.2629 -0.21818 2011 3 3 55623 0.0492 0.2636 -0.21940 2011 3 4 55624 0.0479 0.2643 -0.22071 2011 3 5 55625 0.0467 0.2650 -0.22206 2011 3 6 55626 0.0455 0.2657 -0.22344 2011 3 7 55627 0.0443 0.2665 -0.22478 2011 3 8 55628 0.0431 0.2672 -0.22607 2011 3 9 55629 0.0419 0.2680 -0.22730 2011 3 10 55630 0.0407 0.2688 -0.22845 2011 3 11 55631 0.0396 0.2696 -0.22952 2011 3 12 55632 0.0385 0.2705 -0.23050 2011 3 13 55633 0.0374 0.2713 -0.23143 2011 3 14 55634 0.0363 0.2722 -0.23239 2011 3 15 55635 0.0352 0.2731 -0.23349 2011 3 16 55636 0.0342 0.2740 -0.23478 2011 3 17 55637 0.0332 0.2749 -0.23633 2011 3 18 55638 0.0322 0.2758 -0.23814 2011 3 19 55639 0.0312 0.2767 -0.24012 2011 3 20 55640 0.0302 0.2777 -0.24214 2011 3 21 55641 0.0293 0.2787 -0.24406 2011 3 22 55642 0.0284 0.2797 -0.24575 2011 3 23 55643 0.0274 0.2807 -0.24718 2011 3 24 55644 0.0266 0.2817 -0.24843 2011 3 25 55645 0.0257 0.2827 -0.24953 2011 3 26 55646 0.0249 0.2838 -0.25063 2011 3 27 55647 0.0240 0.2848 -0.25179 2011 3 28 55648 0.0232 0.2859 -0.25306 2011 3 29 55649 0.0224 0.2870 -0.25445 2011 3 30 55650 0.0217 0.2881 -0.25594 2011 3 31 55651 0.0209 0.2892 -0.25749 2011 4 1 55652 0.0202 0.2903 -0.25909 2011 4 2 55653 0.0195 0.2914 -0.26071 2011 4 3 55654 0.0188 0.2925 -0.26225 2011 4 4 55655 0.0182 0.2937 -0.26372 2011 4 5 55656 0.0176 0.2948 -0.26512 2011 4 6 55657 0.0169 0.2960 -0.26640 2011 4 7 55658 0.0164 0.2971 -0.26753 2011 4 8 55659 0.0158 0.2983 -0.26860 2011 4 9 55660 0.0152 0.2995 -0.26965 2011 4 10 55661 0.0147 0.3007 -0.27076 2011 4 11 55662 0.0142 0.3019 -0.27196 2011 4 12 55663 0.0137 0.3031 -0.27334 2011 4 13 55664 0.0133 0.3043 -0.27487 2011 4 14 55665 0.0128 0.3055 -0.27659 2011 4 15 55666 0.0124 0.3067 -0.27846 2011 4 16 55667 0.0120 0.3080 -0.28040 2011 4 17 55668 0.0116 0.3092 -0.28231 2011 4 18 55669 0.0113 0.3104 -0.28412 2011 4 19 55670 0.0110 0.3117 -0.28574 2011 4 20 55671 0.0107 0.3129 -0.28711 2011 4 21 55672 0.0104 0.3142 -0.28825 2011 4 22 55673 0.0101 0.3154 -0.28923 2011 4 23 55674 0.0099 0.3167 -0.29014 2011 4 24 55675 0.0096 0.3179 -0.29108 2011 4 25 55676 0.0094 0.3192 -0.29208 2011 4 26 55677 0.0093 0.3205 -0.29315 2011 4 27 55678 0.0091 0.3217 -0.29431 2011 4 28 55679 0.0090 0.3230 -0.29554 2011 4 29 55680 0.0089 0.3242 -0.29674 2011 4 30 55681 0.0088 0.3255 -0.29795 2011 5 1 55682 0.0087 0.3268 -0.29909 2011 5 2 55683 0.0086 0.3280 -0.30011 2011 5 3 55684 0.0086 0.3293 -0.30103 2011 5 4 55685 0.0086 0.3306 -0.30183 2011 5 5 55686 0.0086 0.3318 -0.30254 2011 5 6 55687 0.0086 0.3331 -0.30318 2011 5 7 55688 0.0087 0.3343 -0.30377 2011 5 8 55689 0.0088 0.3356 -0.30440 2011 5 9 55690 0.0089 0.3368 -0.30517 2011 5 10 55691 0.0090 0.3381 -0.30612 2011 5 11 55692 0.0091 0.3393 -0.30727 2011 5 12 55693 0.0093 0.3406 -0.30858 2011 5 13 55694 0.0094 0.3418 -0.31000 2011 5 14 55695 0.0096 0.3431 -0.31143 2011 5 15 55696 0.0098 0.3443 -0.31279 2011 5 16 55697 0.0100 0.3455 -0.31404 2011 5 17 55698 0.0103 0.3467 -0.31512 2011 5 18 55699 0.0106 0.3480 -0.31605 2011 5 19 55700 0.0108 0.3492 -0.31688 2011 5 20 55701 0.0111 0.3504 -0.31768 2011 5 21 55702 0.0115 0.3516 -0.31850 2011 5 22 55703 0.0118 0.3527 -0.31940 2011 5 23 55704 0.0121 0.3539 -0.32040 2011 5 24 55705 0.0125 0.3551 -0.32143 2011 5 25 55706 0.0129 0.3563 -0.32251 2011 5 26 55707 0.0133 0.3574 -0.32364 2011 5 27 55708 0.0137 0.3586 -0.32476 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) 55324 -61.99 0.28 -10.40 0.34 55325 -62.04 0.18 -10.32 0.34 55326 -62.30 0.18 -10.29 0.34 55327 -62.60 0.12 -10.34 0.34 55328 -62.81 0.10 -10.38 0.34 55329 -62.96 0.10 -10.34 0.34 55330 -63.05 0.10 -10.25 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55324 -0.261 0.111 -0.164 0.340 55325 -0.278 0.072 -0.173 0.340 55326 -0.283 0.072 -0.184 0.340 55327 -0.272 0.048 -0.189 0.340 55328 -0.242 0.040 -0.169 0.340 55329 -0.214 0.040 -0.133 0.340 55330 -0.178 0.040 -0.091 0.340 The recommended software to predict celestial pole offsets can be found at and software for the calculation of the dX and dY components with respect to IAU2000A Nutation/Precession Theory can be found at the web site in Chapter 5 Section 5.5 of the IERS Conventions.