********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 20 May 2010 Vol. XXIII No. 020 ______________________________________________________________________ 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 14 55330 -.05332 .00009 0.41944 .00009 -0.034285 0.000012 10 5 15 55331 -.05191 .00009 0.42147 .00009 -0.035000 0.000012 10 5 16 55332 -.05053 .00010 0.42339 .00009 -0.035651 0.000012 10 5 17 55333 -.04910 .00009 0.42494 .00009 -0.036346 0.000013 10 5 18 55334 -.04739 .00009 0.42627 .00009 -0.037170 0.000013 10 5 19 55335 -.04544 .00009 0.42774 .00009 -0.038221 0.000010 10 5 20 55336 -.04349 .00009 0.42962 .00009 -0.039558 0.000010 _______________________________________________________________________ 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 = 0.0828 - 0.0197 cos A + 0.1055 sin A - 0.1001 cos C - 0.0190 sin C y = 0.3524 + 0.0955 cos A + 0.0152 sin A - 0.0190 cos C + 0.1001 sin C UT1-UTC = -0.0111 - 0.00085 (MJD - 55344) - (UT2-UT1) where A = 2*pi*(MJD-55336)/365.25 and C = 2*pi*(MJD-55336)/435. TAI-UTC(MJD 55337) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55336)**0.80 S t = 0.00025 (MJD-55336)**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 21 55337 -0.0417 0.4314 -0.04117 2010 5 22 55338 -0.0400 0.4335 -0.04292 2010 5 23 55339 -0.0383 0.4355 -0.04469 2010 5 24 55340 -0.0367 0.4374 -0.04633 2010 5 25 55341 -0.0350 0.4393 -0.04775 2010 5 26 55342 -0.0333 0.4411 -0.04892 2010 5 27 55343 -0.0316 0.4429 -0.04982 2010 5 28 55344 -0.0299 0.4447 -0.05053 2010 5 29 55345 -0.0281 0.4464 -0.05111 2010 5 30 55346 -0.0263 0.4481 -0.05167 2010 5 31 55347 -0.0245 0.4498 -0.05228 2010 6 1 55348 -0.0227 0.4514 -0.05299 2010 6 2 55349 -0.0208 0.4531 -0.05376 2010 6 3 55350 -0.0190 0.4546 -0.05459 2010 6 4 55351 -0.0171 0.4562 -0.05546 2010 6 5 55352 -0.0152 0.4577 -0.05634 2010 6 6 55353 -0.0132 0.4592 -0.05722 2010 6 7 55354 -0.0112 0.4607 -0.05801 2010 6 8 55355 -0.0093 0.4621 -0.05864 2010 6 9 55356 -0.0073 0.4635 -0.05908 2010 6 10 55357 -0.0053 0.4649 -0.05933 2010 6 11 55358 -0.0032 0.4663 -0.05942 2010 6 12 55359 -0.0012 0.4676 -0.05943 2010 6 13 55360 0.0009 0.4688 -0.05943 2010 6 14 55361 0.0030 0.4701 -0.05952 2010 6 15 55362 0.0051 0.4713 -0.05978 2010 6 16 55363 0.0072 0.4725 -0.06027 2010 6 17 55364 0.0093 0.4736 -0.06097 2010 6 18 55365 0.0115 0.4747 -0.06181 2010 6 19 55366 0.0136 0.4758 -0.06266 2010 6 20 55367 0.0158 0.4768 -0.06342 2010 6 21 55368 0.0180 0.4778 -0.06397 2010 6 22 55369 0.0202 0.4788 -0.06429 2010 6 23 55370 0.0224 0.4798 -0.06437 2010 6 24 55371 0.0246 0.4807 -0.06423 2010 6 25 55372 0.0268 0.4815 -0.06396 2010 6 26 55373 0.0291 0.4824 -0.06363 2010 6 27 55374 0.0313 0.4832 -0.06331 2010 6 28 55375 0.0335 0.4839 -0.06306 2010 6 29 55376 0.0358 0.4847 -0.06291 2010 6 30 55377 0.0381 0.4853 -0.06286 2010 7 1 55378 0.0403 0.4860 -0.06289 2010 7 2 55379 0.0426 0.4866 -0.06298 2010 7 3 55380 0.0449 0.4872 -0.06310 2010 7 4 55381 0.0472 0.4878 -0.06319 2010 7 5 55382 0.0494 0.4883 -0.06321 2010 7 6 55383 0.0517 0.4888 -0.06312 2010 7 7 55384 0.0540 0.4892 -0.06290 2010 7 8 55385 0.0563 0.4896 -0.06256 2010 7 9 55386 0.0586 0.4900 -0.06211 2010 7 10 55387 0.0609 0.4903 -0.06163 2010 7 11 55388 0.0632 0.4906 -0.06122 2010 7 12 55389 0.0655 0.4909 -0.06099 2010 7 13 55390 0.0678 0.4911 -0.06101 2010 7 14 55391 0.0701 0.4913 -0.06129 2010 7 15 55392 0.0724 0.4915 -0.06178 2010 7 16 55393 0.0746 0.4916 -0.06234 2010 7 17 55394 0.0769 0.4917 -0.06285 2010 7 18 55395 0.0792 0.4917 -0.06319 2010 7 19 55396 0.0815 0.4917 -0.06328 2010 7 20 55397 0.0837 0.4917 -0.06314 2010 7 21 55398 0.0860 0.4916 -0.06279 2010 7 22 55399 0.0882 0.4916 -0.06232 2010 7 23 55400 0.0905 0.4914 -0.06180 2010 7 24 55401 0.0927 0.4913 -0.06131 2010 7 25 55402 0.0949 0.4911 -0.06092 2010 7 26 55403 0.0972 0.4908 -0.06064 2010 7 27 55404 0.0994 0.4906 -0.06051 2010 7 28 55405 0.1016 0.4903 -0.06050 2010 7 29 55406 0.1038 0.4899 -0.06059 2010 7 30 55407 0.1059 0.4896 -0.06074 2010 7 31 55408 0.1081 0.4892 -0.06090 2010 8 1 55409 0.1103 0.4887 -0.06102 2010 8 2 55410 0.1124 0.4883 -0.06106 2010 8 3 55411 0.1145 0.4878 -0.06099 2010 8 4 55412 0.1166 0.4872 -0.06080 2010 8 5 55413 0.1187 0.4867 -0.06050 2010 8 6 55414 0.1208 0.4861 -0.06016 2010 8 7 55415 0.1229 0.4854 -0.05985 2010 8 8 55416 0.1250 0.4848 -0.05968 2010 8 9 55417 0.1270 0.4841 -0.05975 2010 8 10 55418 0.1290 0.4834 -0.06011 2010 8 11 55419 0.1310 0.4826 -0.06072 2010 8 12 55420 0.1330 0.4818 -0.06150 2010 8 13 55421 0.1350 0.4810 -0.06229 2010 8 14 55422 0.1369 0.4802 -0.06295 2010 8 15 55423 0.1388 0.4793 -0.06338 2010 8 16 55424 0.1408 0.4784 -0.06356 2010 8 17 55425 0.1426 0.4774 -0.06351 2010 8 18 55426 0.1445 0.4765 -0.06332 2010 8 19 55427 0.1464 0.4755 -0.06307 2010 8 20 55428 0.1482 0.4745 -0.06283 2010 8 21 55429 0.1500 0.4734 -0.06266 2010 8 22 55430 0.1518 0.4723 -0.06261 2010 8 23 55431 0.1535 0.4712 -0.06270 2010 8 24 55432 0.1553 0.4701 -0.06293 2010 8 25 55433 0.1570 0.4689 -0.06328 2010 8 26 55434 0.1587 0.4678 -0.06371 2010 8 27 55435 0.1603 0.4665 -0.06417 2010 8 28 55436 0.1620 0.4653 -0.06462 2010 8 29 55437 0.1636 0.4641 -0.06500 2010 8 30 55438 0.1652 0.4628 -0.06528 2010 8 31 55439 0.1668 0.4615 -0.06546 2010 9 1 55440 0.1683 0.4601 -0.06553 2010 9 2 55441 0.1698 0.4588 -0.06554 2010 9 3 55442 0.1713 0.4574 -0.06555 2010 9 4 55443 0.1728 0.4560 -0.06566 2010 9 5 55444 0.1742 0.4546 -0.06597 2010 9 6 55445 0.1756 0.4531 -0.06659 2010 9 7 55446 0.1770 0.4517 -0.06750 2010 9 8 55447 0.1783 0.4502 -0.06866 2010 9 9 55448 0.1797 0.4487 -0.06992 2010 9 10 55449 0.1810 0.4471 -0.07113 2010 9 11 55450 0.1822 0.4456 -0.07216 2010 9 12 55451 0.1835 0.4440 -0.07292 2010 9 13 55452 0.1847 0.4424 -0.07341 2010 9 14 55453 0.1858 0.4409 -0.07372 2010 9 15 55454 0.1870 0.4392 -0.07392 2010 9 16 55455 0.1881 0.4376 -0.07410 2010 9 17 55456 0.1892 0.4360 -0.07435 2010 9 18 55457 0.1902 0.4343 -0.07470 2010 9 19 55458 0.1913 0.4326 -0.07519 2010 9 20 55459 0.1923 0.4309 -0.07582 2010 9 21 55460 0.1932 0.4292 -0.07657 2010 9 22 55461 0.1942 0.4275 -0.07741 2010 9 23 55462 0.1951 0.4257 -0.07829 2010 9 24 55463 0.1959 0.4240 -0.07917 2010 9 25 55464 0.1968 0.4222 -0.08000 2010 9 26 55465 0.1976 0.4204 -0.08073 2010 9 27 55466 0.1984 0.4187 -0.08135 2010 9 28 55467 0.1991 0.4169 -0.08187 2010 9 29 55468 0.1998 0.4151 -0.08232 2010 9 30 55469 0.2005 0.4132 -0.08275 2010 10 1 55470 0.2012 0.4114 -0.08324 2010 10 2 55471 0.2018 0.4096 -0.08388 2010 10 3 55472 0.2024 0.4077 -0.08476 2010 10 4 55473 0.2029 0.4059 -0.08591 2010 10 5 55474 0.2034 0.4040 -0.08732 2010 10 6 55475 0.2039 0.4022 -0.08891 2010 10 7 55476 0.2044 0.4003 -0.09053 2010 10 8 55477 0.2048 0.3984 -0.09204 2010 10 9 55478 0.2052 0.3965 -0.09333 2010 10 10 55479 0.2056 0.3946 -0.09435 2010 10 11 55480 0.2059 0.3927 -0.09515 2010 10 12 55481 0.2062 0.3908 -0.09578 2010 10 13 55482 0.2065 0.3889 -0.09636 2010 10 14 55483 0.2067 0.3870 -0.09697 2010 10 15 55484 0.2069 0.3851 -0.09767 2010 10 16 55485 0.2071 0.3832 -0.09847 2010 10 17 55486 0.2072 0.3813 -0.09941 2010 10 18 55487 0.2073 0.3794 -0.10045 2010 10 19 55488 0.2074 0.3775 -0.10158 2010 10 20 55489 0.2074 0.3756 -0.10276 2010 10 21 55490 0.2074 0.3737 -0.10394 2010 10 22 55491 0.2074 0.3718 -0.10506 2010 10 23 55492 0.2073 0.3699 -0.10609 2010 10 24 55493 0.2073 0.3680 -0.10700 2010 10 25 55494 0.2071 0.3661 -0.10780 2010 10 26 55495 0.2070 0.3642 -0.10849 2010 10 27 55496 0.2068 0.3623 -0.10914 2010 10 28 55497 0.2066 0.3604 -0.10981 2010 10 29 55498 0.2064 0.3585 -0.11060 2010 10 30 55499 0.2061 0.3567 -0.11156 2010 10 31 55500 0.2058 0.3548 -0.11276 2010 11 1 55501 0.2055 0.3529 -0.11419 2010 11 2 55502 0.2051 0.3511 -0.11579 2010 11 3 55503 0.2047 0.3492 -0.11748 2010 11 4 55504 0.2043 0.3474 -0.11911 2010 11 5 55505 0.2039 0.3455 -0.12058 2010 11 6 55506 0.2034 0.3437 -0.12182 2010 11 7 55507 0.2029 0.3419 -0.12281 2010 11 8 55508 0.2023 0.3401 -0.12362 2010 11 9 55509 0.2018 0.3383 -0.12433 2010 11 10 55510 0.2012 0.3365 -0.12502 2010 11 11 55511 0.2006 0.3347 -0.12579 2010 11 12 55512 0.1999 0.3329 -0.12666 2010 11 13 55513 0.1993 0.3312 -0.12764 2010 11 14 55514 0.1986 0.3294 -0.12874 2010 11 15 55515 0.1978 0.3277 -0.12992 2010 11 16 55516 0.1971 0.3260 -0.13116 2010 11 17 55517 0.1963 0.3243 -0.13241 2010 11 18 55518 0.1955 0.3226 -0.13362 2010 11 19 55519 0.1947 0.3209 -0.13476 2010 11 20 55520 0.1938 0.3192 -0.13579 2010 11 21 55521 0.1929 0.3176 -0.13670 2010 11 22 55522 0.1920 0.3160 -0.13752 2010 11 23 55523 0.1911 0.3143 -0.13827 2010 11 24 55524 0.1902 0.3127 -0.13904 2010 11 25 55525 0.1892 0.3112 -0.13989 2010 11 26 55526 0.1882 0.3096 -0.14089 2010 11 27 55527 0.1872 0.3080 -0.14209 2010 11 28 55528 0.1861 0.3065 -0.14349 2010 11 29 55529 0.1851 0.3050 -0.14504 2010 11 30 55530 0.1840 0.3035 -0.14664 2010 12 1 55531 0.1829 0.3020 -0.14820 2010 12 2 55532 0.1817 0.3005 -0.14960 2010 12 3 55533 0.1806 0.2991 -0.15077 2010 12 4 55534 0.1794 0.2977 -0.15167 2010 12 5 55535 0.1782 0.2963 -0.15233 2010 12 6 55536 0.1770 0.2949 -0.15283 2010 12 7 55537 0.1758 0.2935 -0.15325 2010 12 8 55538 0.1746 0.2922 -0.15367 2010 12 9 55539 0.1733 0.2908 -0.15414 2010 12 10 55540 0.1720 0.2895 -0.15469 2010 12 11 55541 0.1707 0.2883 -0.15530 2010 12 12 55542 0.1694 0.2870 -0.15596 2010 12 13 55543 0.1681 0.2858 -0.15664 2010 12 14 55544 0.1667 0.2845 -0.15732 2010 12 15 55545 0.1654 0.2834 -0.15797 2010 12 16 55546 0.1640 0.2822 -0.15855 2010 12 17 55547 0.1626 0.2810 -0.15905 2010 12 18 55548 0.1612 0.2799 -0.15946 2010 12 19 55549 0.1598 0.2788 -0.15978 2010 12 20 55550 0.1583 0.2777 -0.16004 2010 12 21 55551 0.1569 0.2767 -0.16027 2010 12 22 55552 0.1554 0.2756 -0.16055 2010 12 23 55553 0.1540 0.2746 -0.16097 2010 12 24 55554 0.1525 0.2737 -0.16161 2010 12 25 55555 0.1510 0.2727 -0.16248 2010 12 26 55556 0.1495 0.2718 -0.16354 2010 12 27 55557 0.1480 0.2708 -0.16471 2010 12 28 55558 0.1465 0.2700 -0.16584 2010 12 29 55559 0.1449 0.2691 -0.16682 2010 12 30 55560 0.1434 0.2683 -0.16760 2010 12 31 55561 0.1418 0.2675 -0.16819 2011 1 1 55562 0.1403 0.2667 -0.16865 2011 1 2 55563 0.1387 0.2659 -0.16896 2011 1 3 55564 0.1371 0.2652 -0.16917 2011 1 4 55565 0.1356 0.2645 -0.16937 2011 1 5 55566 0.1340 0.2638 -0.16965 2011 1 6 55567 0.1324 0.2631 -0.17004 2011 1 7 55568 0.1308 0.2625 -0.17055 2011 1 8 55569 0.1292 0.2619 -0.17112 2011 1 9 55570 0.1276 0.2613 -0.17173 2011 1 10 55571 0.1260 0.2608 -0.17237 2011 1 11 55572 0.1244 0.2602 -0.17297 2011 1 12 55573 0.1228 0.2597 -0.17355 2011 1 13 55574 0.1211 0.2592 -0.17412 2011 1 14 55575 0.1195 0.2588 -0.17463 2011 1 15 55576 0.1179 0.2584 -0.17505 2011 1 16 55577 0.1163 0.2580 -0.17540 2011 1 17 55578 0.1147 0.2576 -0.17572 2011 1 18 55579 0.1130 0.2572 -0.17610 2011 1 19 55580 0.1114 0.2569 -0.17665 2011 1 20 55581 0.1098 0.2566 -0.17745 2011 1 21 55582 0.1082 0.2564 -0.17848 2011 1 22 55583 0.1065 0.2561 -0.17978 2011 1 23 55584 0.1049 0.2559 -0.18123 2011 1 24 55585 0.1033 0.2557 -0.18262 2011 1 25 55586 0.1017 0.2555 -0.18380 2011 1 26 55587 0.1001 0.2554 -0.18471 2011 1 27 55588 0.0985 0.2553 -0.18542 2011 1 28 55589 0.0969 0.2552 -0.18598 2011 1 29 55590 0.0953 0.2551 -0.18639 2011 1 30 55591 0.0937 0.2551 -0.18671 2011 1 31 55592 0.0921 0.2551 -0.18703 2011 2 1 55593 0.0905 0.2551 -0.18746 2011 2 2 55594 0.0890 0.2551 -0.18804 2011 2 3 55595 0.0874 0.2552 -0.18875 2011 2 4 55596 0.0858 0.2553 -0.18956 2011 2 5 55597 0.0843 0.2554 -0.19048 2011 2 6 55598 0.0827 0.2555 -0.19144 2011 2 7 55599 0.0812 0.2557 -0.19240 2011 2 8 55600 0.0797 0.2559 -0.19334 2011 2 9 55601 0.0782 0.2561 -0.19424 2011 2 10 55602 0.0766 0.2563 -0.19504 2011 2 11 55603 0.0751 0.2566 -0.19573 2011 2 12 55604 0.0737 0.2569 -0.19633 2011 2 13 55605 0.0722 0.2572 -0.19690 2011 2 14 55606 0.0707 0.2575 -0.19753 2011 2 15 55607 0.0693 0.2579 -0.19830 2011 2 16 55608 0.0678 0.2582 -0.19927 2011 2 17 55609 0.0664 0.2586 -0.20053 2011 2 18 55610 0.0649 0.2590 -0.20205 2011 2 19 55611 0.0635 0.2595 -0.20377 2011 2 20 55612 0.0621 0.2599 -0.20559 2011 2 21 55613 0.0608 0.2604 -0.20736 2011 2 22 55614 0.0594 0.2609 -0.20897 2011 2 23 55615 0.0580 0.2615 -0.21036 2011 2 24 55616 0.0567 0.2620 -0.21155 2011 2 25 55617 0.0554 0.2626 -0.21256 2011 2 26 55618 0.0540 0.2632 -0.21345 2011 2 27 55619 0.0528 0.2638 -0.21428 2011 2 28 55620 0.0515 0.2644 -0.21514 2011 3 1 55621 0.0502 0.2650 -0.21608 2011 3 2 55622 0.0489 0.2657 -0.21713 2011 3 3 55623 0.0477 0.2664 -0.21827 2011 3 4 55624 0.0465 0.2671 -0.21953 2011 3 5 55625 0.0453 0.2678 -0.22084 2011 3 6 55626 0.0441 0.2686 -0.22217 2011 3 7 55627 0.0429 0.2693 -0.22348 2011 3 8 55628 0.0418 0.2701 -0.22471 2011 3 9 55629 0.0407 0.2709 -0.22586 2011 3 10 55630 0.0395 0.2717 -0.22694 2011 3 11 55631 0.0384 0.2726 -0.22794 2011 3 12 55632 0.0374 0.2734 -0.22893 2011 3 13 55633 0.0363 0.2743 -0.22993 2011 3 14 55634 0.0353 0.2752 -0.23103 2011 3 15 55635 0.0342 0.2760 -0.23230 2011 3 16 55636 0.0332 0.2770 -0.23379 2011 3 17 55637 0.0323 0.2779 -0.23552 2011 3 18 55638 0.0313 0.2788 -0.23749 2011 3 19 55639 0.0303 0.2798 -0.23965 2011 3 20 55640 0.0294 0.2807 -0.24180 2011 3 21 55641 0.0285 0.2817 -0.24382 2011 3 22 55642 0.0276 0.2827 -0.24566 2011 3 23 55643 0.0268 0.2837 -0.24723 2011 3 24 55644 0.0259 0.2848 -0.24852 2011 3 25 55645 0.0251 0.2858 -0.24969 2011 3 26 55646 0.0243 0.2868 -0.25084 2011 3 27 55647 0.0235 0.2879 -0.25203 2011 3 28 55648 0.0227 0.2890 -0.25331 2011 3 29 55649 0.0220 0.2900 -0.25470 2011 3 30 55650 0.0213 0.2911 -0.25612 2011 3 31 55651 0.0206 0.2922 -0.25758 2011 4 1 55652 0.0199 0.2933 -0.25904 2011 4 2 55653 0.0192 0.2945 -0.26050 2011 4 3 55654 0.0186 0.2956 -0.26193 2011 4 4 55655 0.0180 0.2967 -0.26336 2011 4 5 55656 0.0174 0.2979 -0.26474 2011 4 6 55657 0.0168 0.2990 -0.26602 2011 4 7 55658 0.0163 0.3002 -0.26716 2011 4 8 55659 0.0158 0.3014 -0.26815 2011 4 9 55660 0.0153 0.3026 -0.26904 2011 4 10 55661 0.0148 0.3037 -0.26994 2011 4 11 55662 0.0143 0.3049 -0.27091 2011 4 12 55663 0.0139 0.3061 -0.27202 2011 4 13 55664 0.0134 0.3073 -0.27339 2011 4 14 55665 0.0130 0.3085 -0.27500 2011 4 15 55666 0.0127 0.3097 -0.27680 2011 4 16 55667 0.0123 0.3110 -0.27872 2011 4 17 55668 0.0120 0.3122 -0.28063 2011 4 18 55669 0.0117 0.3134 -0.28235 2011 4 19 55670 0.0114 0.3146 -0.28384 2011 4 20 55671 0.0111 0.3159 -0.28509 2011 4 21 55672 0.0109 0.3171 -0.28615 2011 4 22 55673 0.0107 0.3183 -0.28710 2011 4 23 55674 0.0104 0.3196 -0.28800 2011 4 24 55675 0.0103 0.3208 -0.28893 2011 4 25 55676 0.0101 0.3221 -0.28995 2011 4 26 55677 0.0100 0.3233 -0.29106 2011 4 27 55678 0.0099 0.3246 -0.29225 2011 4 28 55679 0.0098 0.3258 -0.29347 2011 4 29 55680 0.0097 0.3271 -0.29468 2011 4 30 55681 0.0096 0.3283 -0.29587 2011 5 1 55682 0.0096 0.3295 -0.29702 2011 5 2 55683 0.0096 0.3308 -0.29816 2011 5 3 55684 0.0096 0.3320 -0.29925 2011 5 4 55685 0.0096 0.3333 -0.30028 2011 5 5 55686 0.0097 0.3345 -0.30126 2011 5 6 55687 0.0097 0.3357 -0.30219 2011 5 7 55688 0.0098 0.3370 -0.30311 2011 5 8 55689 0.0099 0.3382 -0.30410 2011 5 9 55690 0.0100 0.3394 -0.30521 2011 5 10 55691 0.0102 0.3407 -0.30648 2011 5 11 55692 0.0104 0.3419 -0.30794 2011 5 12 55693 0.0105 0.3431 -0.30963 2011 5 13 55694 0.0107 0.3443 -0.31146 2011 5 14 55695 0.0110 0.3455 -0.31329 2011 5 15 55696 0.0112 0.3467 -0.31497 2011 5 16 55697 0.0115 0.3479 -0.31644 2011 5 17 55698 0.0118 0.3491 -0.31763 2011 5 18 55699 0.0121 0.3503 -0.31860 2011 5 19 55700 0.0124 0.3515 -0.31942 2011 5 20 55701 0.0127 0.3526 -0.32015 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) 55317 -62.40 0.21 -10.32 0.34 55318 -62.14 0.26 -10.23 0.34 55319 -62.12 0.26 -10.06 0.34 55320 -62.31 0.29 -9.97 0.34 55321 -62.48 0.27 -10.05 0.34 55322 -62.40 0.27 -10.24 0.34 55323 -62.11 0.27 -10.39 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55317 -0.285 0.084 -0.095 0.340 55318 -0.267 0.103 -0.122 0.340 55319 -0.255 0.103 -0.117 0.340 55320 -0.247 0.115 -0.094 0.340 55321 -0.240 0.107 -0.082 0.340 55322 -0.228 0.107 -0.098 0.340 55323 -0.216 0.107 -0.134 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.