********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 13 May 2010 Vol. XXIII No. 019 ______________________________________________________________________ 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 7 55323 -.06288 .00010 0.40239 .00009 -0.026830 0.000006 10 5 8 55324 -.06056 .00010 0.40516 .00009 -0.027711 0.000009 10 5 9 55325 -.05892 .00010 0.40800 .00009 -0.028755 0.000009 10 5 10 55326 -.05781 .00010 0.41065 .00009 -0.029918 0.000009 10 5 11 55327 -.05664 .00009 0.41307 .00009 -0.031137 0.000009 10 5 12 55328 -.05551 .00009 0.41535 .00009 -0.032333 0.000009 10 5 13 55329 -.05454 .00009 0.41753 .00009 -0.033393 0.000055 _______________________________________________________________________ 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 = 0.0802 - 0.0317 cos A + 0.1058 sin A - 0.0964 cos C - 0.0320 sin C y = 0.3536 + 0.0957 cos A + 0.0263 sin A - 0.0320 cos C + 0.0964 sin C UT1-UTC = 0.0002 - 0.00085 (MJD - 55337) - (UT2-UT1) where A = 2*pi*(MJD-55329)/365.25 and C = 2*pi*(MJD-55329)/435. TAI-UTC(MJD 55330) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55329)**0.80 S t = 0.00025 (MJD-55329)**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 14 55330 -0.0533 0.4196 -0.03428 2010 5 15 55331 -0.0521 0.4216 -0.03502 2010 5 16 55332 -0.0509 0.4236 -0.03570 2010 5 17 55333 -0.0495 0.4256 -0.03643 2010 5 18 55334 -0.0480 0.4276 -0.03729 2010 5 19 55335 -0.0466 0.4296 -0.03836 2010 5 20 55336 -0.0450 0.4315 -0.03967 2010 5 21 55337 -0.0435 0.4335 -0.04116 2010 5 22 55338 -0.0419 0.4354 -0.04276 2010 5 23 55339 -0.0402 0.4373 -0.04434 2010 5 24 55340 -0.0386 0.4392 -0.04576 2010 5 25 55341 -0.0369 0.4411 -0.04695 2010 5 26 55342 -0.0352 0.4429 -0.04788 2010 5 27 55343 -0.0334 0.4447 -0.04852 2010 5 28 55344 -0.0317 0.4465 -0.04889 2010 5 29 55345 -0.0299 0.4482 -0.04906 2010 5 30 55346 -0.0281 0.4500 -0.04914 2010 5 31 55347 -0.0262 0.4516 -0.04924 2010 6 1 55348 -0.0244 0.4533 -0.04944 2010 6 2 55349 -0.0225 0.4549 -0.04979 2010 6 3 55350 -0.0206 0.4565 -0.05026 2010 6 4 55351 -0.0187 0.4581 -0.05084 2010 6 5 55352 -0.0167 0.4597 -0.05149 2010 6 6 55353 -0.0148 0.4612 -0.05216 2010 6 7 55354 -0.0128 0.4626 -0.05281 2010 6 8 55355 -0.0107 0.4641 -0.05339 2010 6 9 55356 -0.0087 0.4655 -0.05385 2010 6 10 55357 -0.0067 0.4669 -0.05415 2010 6 11 55358 -0.0046 0.4682 -0.05429 2010 6 12 55359 -0.0025 0.4696 -0.05433 2010 6 13 55360 -0.0004 0.4708 -0.05434 2010 6 14 55361 0.0017 0.4721 -0.05441 2010 6 15 55362 0.0038 0.4733 -0.05464 2010 6 16 55363 0.0060 0.4745 -0.05509 2010 6 17 55364 0.0081 0.4756 -0.05573 2010 6 18 55365 0.0103 0.4768 -0.05649 2010 6 19 55366 0.0125 0.4778 -0.05723 2010 6 20 55367 0.0147 0.4789 -0.05785 2010 6 21 55368 0.0169 0.4799 -0.05827 2010 6 22 55369 0.0192 0.4809 -0.05843 2010 6 23 55370 0.0214 0.4818 -0.05835 2010 6 24 55371 0.0236 0.4827 -0.05805 2010 6 25 55372 0.0259 0.4836 -0.05762 2010 6 26 55373 0.0282 0.4844 -0.05715 2010 6 27 55374 0.0304 0.4852 -0.05670 2010 6 28 55375 0.0327 0.4860 -0.05634 2010 6 29 55376 0.0350 0.4867 -0.05610 2010 6 30 55377 0.0373 0.4874 -0.05599 2010 7 1 55378 0.0396 0.4881 -0.05600 2010 7 2 55379 0.0419 0.4887 -0.05609 2010 7 3 55380 0.0442 0.4893 -0.05622 2010 7 4 55381 0.0466 0.4898 -0.05636 2010 7 5 55382 0.0489 0.4904 -0.05644 2010 7 6 55383 0.0512 0.4908 -0.05644 2010 7 7 55384 0.0535 0.4913 -0.05631 2010 7 8 55385 0.0559 0.4917 -0.05606 2010 7 9 55386 0.0582 0.4920 -0.05570 2010 7 10 55387 0.0605 0.4924 -0.05531 2010 7 11 55388 0.0629 0.4927 -0.05498 2010 7 12 55389 0.0652 0.4929 -0.05482 2010 7 13 55390 0.0675 0.4931 -0.05492 2010 7 14 55391 0.0698 0.4933 -0.05528 2010 7 15 55392 0.0722 0.4935 -0.05583 2010 7 16 55393 0.0745 0.4936 -0.05646 2010 7 17 55394 0.0768 0.4937 -0.05702 2010 7 18 55395 0.0791 0.4937 -0.05739 2010 7 19 55396 0.0814 0.4937 -0.05753 2010 7 20 55397 0.0837 0.4937 -0.05742 2010 7 21 55398 0.0860 0.4936 -0.05710 2010 7 22 55399 0.0883 0.4935 -0.05665 2010 7 23 55400 0.0906 0.4934 -0.05615 2010 7 24 55401 0.0928 0.4932 -0.05566 2010 7 25 55402 0.0951 0.4930 -0.05525 2010 7 26 55403 0.0974 0.4928 -0.05496 2010 7 27 55404 0.0996 0.4925 -0.05480 2010 7 28 55405 0.1019 0.4922 -0.05477 2010 7 29 55406 0.1041 0.4918 -0.05484 2010 7 30 55407 0.1063 0.4914 -0.05496 2010 7 31 55408 0.1085 0.4910 -0.05508 2010 8 1 55409 0.1107 0.4906 -0.05516 2010 8 2 55410 0.1129 0.4901 -0.05517 2010 8 3 55411 0.1150 0.4896 -0.05507 2010 8 4 55412 0.1172 0.4890 -0.05486 2010 8 5 55413 0.1193 0.4884 -0.05456 2010 8 6 55414 0.1214 0.4878 -0.05421 2010 8 7 55415 0.1235 0.4872 -0.05391 2010 8 8 55416 0.1256 0.4865 -0.05375 2010 8 9 55417 0.1277 0.4858 -0.05383 2010 8 10 55418 0.1297 0.4850 -0.05420 2010 8 11 55419 0.1318 0.4843 -0.05483 2010 8 12 55420 0.1338 0.4834 -0.05563 2010 8 13 55421 0.1358 0.4826 -0.05643 2010 8 14 55422 0.1378 0.4817 -0.05709 2010 8 15 55423 0.1398 0.4808 -0.05752 2010 8 16 55424 0.1417 0.4799 -0.05768 2010 8 17 55425 0.1436 0.4789 -0.05762 2010 8 18 55426 0.1455 0.4780 -0.05741 2010 8 19 55427 0.1474 0.4769 -0.05713 2010 8 20 55428 0.1493 0.4759 -0.05686 2010 8 21 55429 0.1511 0.4748 -0.05667 2010 8 22 55430 0.1529 0.4737 -0.05659 2010 8 23 55431 0.1547 0.4726 -0.05664 2010 8 24 55432 0.1565 0.4714 -0.05684 2010 8 25 55433 0.1582 0.4702 -0.05714 2010 8 26 55434 0.1599 0.4690 -0.05752 2010 8 27 55435 0.1616 0.4678 -0.05793 2010 8 28 55436 0.1633 0.4665 -0.05832 2010 8 29 55437 0.1650 0.4653 -0.05864 2010 8 30 55438 0.1666 0.4639 -0.05889 2010 8 31 55439 0.1682 0.4626 -0.05903 2010 9 1 55440 0.1698 0.4612 -0.05907 2010 9 2 55441 0.1713 0.4599 -0.05906 2010 9 3 55442 0.1728 0.4585 -0.05905 2010 9 4 55443 0.1743 0.4570 -0.05914 2010 9 5 55444 0.1758 0.4556 -0.05944 2010 9 6 55445 0.1772 0.4541 -0.06002 2010 9 7 55446 0.1786 0.4526 -0.06089 2010 9 8 55447 0.1800 0.4511 -0.06201 2010 9 9 55448 0.1813 0.4496 -0.06324 2010 9 10 55449 0.1827 0.4480 -0.06442 2010 9 11 55450 0.1839 0.4464 -0.06541 2010 9 12 55451 0.1852 0.4448 -0.06614 2010 9 13 55452 0.1864 0.4432 -0.06662 2010 9 14 55453 0.1876 0.4416 -0.06691 2010 9 15 55454 0.1888 0.4399 -0.06709 2010 9 16 55455 0.1900 0.4383 -0.06726 2010 9 17 55456 0.1911 0.4366 -0.06750 2010 9 18 55457 0.1921 0.4349 -0.06784 2010 9 19 55458 0.1932 0.4332 -0.06832 2010 9 20 55459 0.1942 0.4314 -0.06894 2010 9 21 55460 0.1952 0.4297 -0.06968 2010 9 22 55461 0.1962 0.4279 -0.07051 2010 9 23 55462 0.1971 0.4262 -0.07139 2010 9 24 55463 0.1980 0.4244 -0.07226 2010 9 25 55464 0.1988 0.4226 -0.07307 2010 9 26 55465 0.1997 0.4208 -0.07380 2010 9 27 55466 0.2005 0.4190 -0.07441 2010 9 28 55467 0.2012 0.4171 -0.07492 2010 9 29 55468 0.2019 0.4153 -0.07535 2010 9 30 55469 0.2026 0.4134 -0.07577 2010 10 1 55470 0.2033 0.4116 -0.07624 2010 10 2 55471 0.2039 0.4097 -0.07688 2010 10 3 55472 0.2045 0.4078 -0.07774 2010 10 4 55473 0.2051 0.4059 -0.07888 2010 10 5 55474 0.2056 0.4040 -0.08028 2010 10 6 55475 0.2062 0.4021 -0.08185 2010 10 7 55476 0.2066 0.4002 -0.08346 2010 10 8 55477 0.2071 0.3983 -0.08496 2010 10 9 55478 0.2075 0.3964 -0.08623 2010 10 10 55479 0.2078 0.3945 -0.08725 2010 10 11 55480 0.2082 0.3925 -0.08803 2010 10 12 55481 0.2085 0.3906 -0.08865 2010 10 13 55482 0.2088 0.3887 -0.08922 2010 10 14 55483 0.2090 0.3867 -0.08982 2010 10 15 55484 0.2092 0.3848 -0.09050 2010 10 16 55485 0.2094 0.3829 -0.09130 2010 10 17 55486 0.2095 0.3809 -0.09223 2010 10 18 55487 0.2096 0.3790 -0.09327 2010 10 19 55488 0.2097 0.3770 -0.09440 2010 10 20 55489 0.2098 0.3751 -0.09558 2010 10 21 55490 0.2098 0.3731 -0.09676 2010 10 22 55491 0.2097 0.3712 -0.09788 2010 10 23 55492 0.2097 0.3692 -0.09892 2010 10 24 55493 0.2096 0.3673 -0.09984 2010 10 25 55494 0.2095 0.3654 -0.10064 2010 10 26 55495 0.2094 0.3634 -0.10135 2010 10 27 55496 0.2092 0.3615 -0.10201 2010 10 28 55497 0.2090 0.3596 -0.10270 2010 10 29 55498 0.2087 0.3577 -0.10351 2010 10 30 55499 0.2085 0.3558 -0.10450 2010 10 31 55500 0.2082 0.3538 -0.10572 2010 11 1 55501 0.2078 0.3519 -0.10718 2010 11 2 55502 0.2075 0.3500 -0.10882 2010 11 3 55503 0.2071 0.3482 -0.11053 2010 11 4 55504 0.2066 0.3463 -0.11221 2010 11 5 55505 0.2062 0.3444 -0.11372 2010 11 6 55506 0.2057 0.3425 -0.11500 2010 11 7 55507 0.2052 0.3407 -0.11604 2010 11 8 55508 0.2047 0.3388 -0.11689 2010 11 9 55509 0.2041 0.3370 -0.11765 2010 11 10 55510 0.2035 0.3352 -0.11840 2010 11 11 55511 0.2029 0.3334 -0.11921 2010 11 12 55512 0.2022 0.3316 -0.12012 2010 11 13 55513 0.2015 0.3298 -0.12115 2010 11 14 55514 0.2008 0.3280 -0.12229 2010 11 15 55515 0.2001 0.3262 -0.12352 2010 11 16 55516 0.1993 0.3245 -0.12479 2010 11 17 55517 0.1985 0.3227 -0.12606 2010 11 18 55518 0.1977 0.3210 -0.12729 2010 11 19 55519 0.1969 0.3193 -0.12842 2010 11 20 55520 0.1960 0.3176 -0.12943 2010 11 21 55521 0.1951 0.3159 -0.13030 2010 11 22 55522 0.1942 0.3143 -0.13105 2010 11 23 55523 0.1933 0.3126 -0.13170 2010 11 24 55524 0.1923 0.3110 -0.13234 2010 11 25 55525 0.1913 0.3093 -0.13302 2010 11 26 55526 0.1903 0.3077 -0.13382 2010 11 27 55527 0.1893 0.3062 -0.13479 2010 11 28 55528 0.1882 0.3046 -0.13592 2010 11 29 55529 0.1871 0.3030 -0.13718 2010 11 30 55530 0.1860 0.3015 -0.13847 2010 12 1 55531 0.1849 0.3000 -0.13970 2010 12 2 55532 0.1837 0.2985 -0.14077 2010 12 3 55533 0.1826 0.2970 -0.14161 2010 12 4 55534 0.1814 0.2956 -0.14222 2010 12 5 55535 0.1802 0.2941 -0.14264 2010 12 6 55536 0.1789 0.2927 -0.14295 2010 12 7 55537 0.1777 0.2913 -0.14323 2010 12 8 55538 0.1764 0.2900 -0.14358 2010 12 9 55539 0.1751 0.2886 -0.14402 2010 12 10 55540 0.1738 0.2873 -0.14457 2010 12 11 55541 0.1725 0.2860 -0.14524 2010 12 12 55542 0.1712 0.2847 -0.14600 2010 12 13 55543 0.1698 0.2834 -0.14681 2010 12 14 55544 0.1684 0.2822 -0.14764 2010 12 15 55545 0.1671 0.2810 -0.14844 2010 12 16 55546 0.1657 0.2798 -0.14915 2010 12 17 55547 0.1642 0.2786 -0.14978 2010 12 18 55548 0.1628 0.2774 -0.15032 2010 12 19 55549 0.1614 0.2763 -0.15074 2010 12 20 55550 0.1599 0.2752 -0.15106 2010 12 21 55551 0.1584 0.2741 -0.15133 2010 12 22 55552 0.1569 0.2731 -0.15165 2010 12 23 55553 0.1554 0.2721 -0.15211 2010 12 24 55554 0.1539 0.2710 -0.15278 2010 12 25 55555 0.1524 0.2701 -0.15362 2010 12 26 55556 0.1509 0.2691 -0.15462 2010 12 27 55557 0.1493 0.2682 -0.15568 2010 12 28 55558 0.1478 0.2673 -0.15672 2010 12 29 55559 0.1462 0.2664 -0.15766 2010 12 30 55560 0.1446 0.2655 -0.15848 2010 12 31 55561 0.1430 0.2647 -0.15914 2011 1 1 55562 0.1414 0.2639 -0.15962 2011 1 2 55563 0.1399 0.2631 -0.15997 2011 1 3 55564 0.1382 0.2624 -0.16028 2011 1 4 55565 0.1366 0.2616 -0.16061 2011 1 5 55566 0.1350 0.2609 -0.16107 2011 1 6 55567 0.1334 0.2603 -0.16167 2011 1 7 55568 0.1318 0.2596 -0.16238 2011 1 8 55569 0.1301 0.2590 -0.16322 2011 1 9 55570 0.1285 0.2584 -0.16414 2011 1 10 55571 0.1268 0.2578 -0.16502 2011 1 11 55572 0.1252 0.2573 -0.16578 2011 1 12 55573 0.1235 0.2568 -0.16641 2011 1 13 55574 0.1219 0.2563 -0.16699 2011 1 14 55575 0.1202 0.2558 -0.16751 2011 1 15 55576 0.1186 0.2554 -0.16792 2011 1 16 55577 0.1169 0.2550 -0.16824 2011 1 17 55578 0.1152 0.2546 -0.16851 2011 1 18 55579 0.1136 0.2542 -0.16885 2011 1 19 55580 0.1119 0.2539 -0.16937 2011 1 20 55581 0.1103 0.2536 -0.17010 2011 1 21 55582 0.1086 0.2533 -0.17107 2011 1 22 55583 0.1069 0.2531 -0.17228 2011 1 23 55584 0.1053 0.2528 -0.17362 2011 1 24 55585 0.1036 0.2526 -0.17497 2011 1 25 55586 0.1020 0.2525 -0.17624 2011 1 26 55587 0.1003 0.2523 -0.17734 2011 1 27 55588 0.0987 0.2522 -0.17820 2011 1 28 55589 0.0970 0.2521 -0.17885 2011 1 29 55590 0.0954 0.2520 -0.17935 2011 1 30 55591 0.0938 0.2520 -0.17979 2011 1 31 55592 0.0921 0.2520 -0.18029 2011 2 1 55593 0.0905 0.2520 -0.18088 2011 2 2 55594 0.0889 0.2520 -0.18161 2011 2 3 55595 0.0873 0.2521 -0.18248 2011 2 4 55596 0.0857 0.2522 -0.18347 2011 2 5 55597 0.0841 0.2523 -0.18453 2011 2 6 55598 0.0825 0.2524 -0.18565 2011 2 7 55599 0.0809 0.2526 -0.18677 2011 2 8 55600 0.0794 0.2528 -0.18785 2011 2 9 55601 0.0778 0.2530 -0.18890 2011 2 10 55602 0.0763 0.2532 -0.18988 2011 2 11 55603 0.0747 0.2535 -0.19077 2011 2 12 55604 0.0732 0.2538 -0.19154 2011 2 13 55605 0.0717 0.2541 -0.19223 2011 2 14 55606 0.0702 0.2544 -0.19291 2011 2 15 55607 0.0687 0.2548 -0.19368 2011 2 16 55608 0.0672 0.2551 -0.19462 2011 2 17 55609 0.0657 0.2555 -0.19580 2011 2 18 55610 0.0642 0.2560 -0.19727 2011 2 19 55611 0.0628 0.2564 -0.19895 2011 2 20 55612 0.0613 0.2569 -0.20073 2011 2 21 55613 0.0599 0.2574 -0.20247 2011 2 22 55614 0.0585 0.2579 -0.20402 2011 2 23 55615 0.0571 0.2584 -0.20533 2011 2 24 55616 0.0557 0.2590 -0.20645 2011 2 25 55617 0.0544 0.2595 -0.20739 2011 2 26 55618 0.0530 0.2601 -0.20827 2011 2 27 55619 0.0517 0.2608 -0.20919 2011 2 28 55620 0.0503 0.2614 -0.21019 2011 3 1 55621 0.0490 0.2621 -0.21130 2011 3 2 55622 0.0477 0.2627 -0.21254 2011 3 3 55623 0.0465 0.2634 -0.21387 2011 3 4 55624 0.0452 0.2642 -0.21528 2011 3 5 55625 0.0440 0.2649 -0.21677 2011 3 6 55626 0.0427 0.2657 -0.21823 2011 3 7 55627 0.0415 0.2664 -0.21964 2011 3 8 55628 0.0404 0.2672 -0.22103 2011 3 9 55629 0.0392 0.2680 -0.22231 2011 3 10 55630 0.0380 0.2689 -0.22345 2011 3 11 55631 0.0369 0.2697 -0.22451 2011 3 12 55632 0.0358 0.2706 -0.22554 2011 3 13 55633 0.0347 0.2715 -0.22658 2011 3 14 55634 0.0336 0.2724 -0.22769 2011 3 15 55635 0.0325 0.2733 -0.22895 2011 3 16 55636 0.0315 0.2742 -0.23037 2011 3 17 55637 0.0305 0.2751 -0.23201 2011 3 18 55638 0.0295 0.2761 -0.23385 2011 3 19 55639 0.0285 0.2771 -0.23584 2011 3 20 55640 0.0275 0.2781 -0.23788 2011 3 21 55641 0.0266 0.2791 -0.23987 2011 3 22 55642 0.0257 0.2801 -0.24169 2011 3 23 55643 0.0248 0.2811 -0.24325 2011 3 24 55644 0.0239 0.2822 -0.24455 2011 3 25 55645 0.0230 0.2832 -0.24565 2011 3 26 55646 0.0222 0.2843 -0.24663 2011 3 27 55647 0.0214 0.2854 -0.24762 2011 3 28 55648 0.0206 0.2865 -0.24866 2011 3 29 55649 0.0198 0.2876 -0.24979 2011 3 30 55650 0.0191 0.2887 -0.25104 2011 3 31 55651 0.0183 0.2898 -0.25240 2011 4 1 55652 0.0176 0.2909 -0.25379 2011 4 2 55653 0.0169 0.2921 -0.25523 2011 4 3 55654 0.0163 0.2933 -0.25665 2011 4 4 55655 0.0156 0.2944 -0.25799 2011 4 5 55656 0.0150 0.2956 -0.25925 2011 4 6 55657 0.0144 0.2968 -0.26040 2011 4 7 55658 0.0138 0.2980 -0.26146 2011 4 8 55659 0.0133 0.2992 -0.26243 2011 4 9 55660 0.0127 0.3004 -0.26331 2011 4 10 55661 0.0122 0.3016 -0.26419 2011 4 11 55662 0.0117 0.3028 -0.26517 2011 4 12 55663 0.0113 0.3040 -0.26634 2011 4 13 55664 0.0108 0.3053 -0.26773 2011 4 14 55665 0.0104 0.3065 -0.26934 2011 4 15 55666 0.0100 0.3077 -0.27115 2011 4 16 55667 0.0096 0.3090 -0.27306 2011 4 17 55668 0.0093 0.3102 -0.27496 2011 4 18 55669 0.0089 0.3115 -0.27680 2011 4 19 55670 0.0086 0.3128 -0.27847 2011 4 20 55671 0.0083 0.3140 -0.27995 2011 4 21 55672 0.0081 0.3153 -0.28128 2011 4 22 55673 0.0078 0.3166 -0.28252 2011 4 23 55674 0.0076 0.3178 -0.28374 2011 4 24 55675 0.0074 0.3191 -0.28503 2011 4 25 55676 0.0072 0.3204 -0.28640 2011 4 26 55677 0.0071 0.3217 -0.28783 2011 4 27 55678 0.0069 0.3229 -0.28933 2011 4 28 55679 0.0068 0.3242 -0.29092 2011 4 29 55680 0.0067 0.3255 -0.29255 2011 4 30 55681 0.0067 0.3268 -0.29413 2011 5 1 55682 0.0066 0.3280 -0.29561 2011 5 2 55683 0.0066 0.3293 -0.29696 2011 5 3 55684 0.0066 0.3306 -0.29817 2011 5 4 55685 0.0066 0.3319 -0.29924 2011 5 5 55686 0.0066 0.3331 -0.30020 2011 5 6 55687 0.0067 0.3344 -0.30107 2011 5 7 55688 0.0067 0.3357 -0.30195 2011 5 8 55689 0.0068 0.3369 -0.30288 2011 5 9 55690 0.0070 0.3382 -0.30393 2011 5 10 55691 0.0071 0.3395 -0.30516 2011 5 11 55692 0.0072 0.3407 -0.30661 2011 5 12 55693 0.0074 0.3420 -0.30824 2011 5 13 55694 0.0076 0.3432 -0.30996 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) 55310 -62.13 0.11 -10.53 0.34 55311 -62.16 0.74 -10.21 0.34 55312 -62.38 0.74 -9.83 0.34 55313 -62.68 0.74 -9.64 0.34 55314 -62.88 0.17 -9.73 0.34 55315 -62.89 0.17 -10.01 0.34 55316 -62.70 0.17 -10.26 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55310 -0.262 0.044 -0.133 0.340 55311 -0.267 0.294 -0.137 0.340 55312 -0.275 0.294 -0.111 0.340 55313 -0.294 0.294 -0.080 0.340 55314 -0.305 0.068 -0.057 0.340 55315 -0.304 0.068 -0.067 0.340 55316 -0.295 0.068 -0.089 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.