********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 6 May 2010 Vol. XXIII No. 018 ______________________________________________________________________ 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 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 4 30 55316 -.07110 .00009 0.38749 .00009 -0.022338 0.000010 10 5 1 55317 -.07082 .00010 0.38948 .00009 -0.023163 0.000012 10 5 2 55318 -.07032 .00010 0.39139 .00009 -0.023818 0.000011 10 5 3 55319 -.06957 .00010 0.39339 .00009 -0.024387 0.000011 10 5 4 55320 -.06836 .00009 0.39537 .00009 -0.024915 0.000011 10 5 5 55321 -.06668 .00009 0.39738 .00009 -0.025462 0.000011 10 5 6 55322 -.06495 .00010 0.39977 .00009 -0.026126 0.000011 IERS Final Values MJD x y UT1-UTC " " s 10 3 2 55257 -0.0359 0.2578 0.05092 10 3 3 55258 -0.0369 0.2599 0.04903 10 3 4 55259 -0.0383 0.2619 0.04739 10 3 5 55260 -0.0391 0.2640 0.04602 10 3 6 55261 -0.0399 0.2660 0.04492 10 3 7 55262 -0.0413 0.2678 0.04403 10 3 8 55263 -0.0430 0.2695 0.04326 10 3 9 55264 -0.0448 0.2711 0.04246 10 3 10 55265 -0.0462 0.2725 0.04155 10 3 11 55266 -0.0471 0.2740 0.04060 10 3 12 55267 -0.0480 0.2758 0.03959 10 3 13 55268 -0.0487 0.2778 0.03847 10 3 14 55269 -0.0496 0.2802 0.03736 10 3 15 55270 -0.0509 0.2828 0.03626 10 3 16 55271 -0.0519 0.2855 0.03508 10 3 17 55272 -0.0526 0.2878 0.03382 10 3 18 55273 -0.0532 0.2897 0.03259 10 3 19 55274 -0.0539 0.2912 0.03149 10 3 20 55275 -0.0544 0.2925 0.03057 10 3 21 55276 -0.0545 0.2942 0.02983 10 3 22 55277 -0.0545 0.2961 0.02923 10 3 23 55278 -0.0547 0.2984 0.02867 10 3 24 55279 -0.0552 0.3009 0.02805 10 3 25 55280 -0.0560 0.3037 0.02726 10 3 26 55281 -0.0570 0.3062 0.02613 10 3 27 55282 -0.0577 0.3083 0.02467 10 3 28 55283 -0.0583 0.3105 0.02294 10 3 29 55284 -0.0589 0.3127 0.02103 10 3 30 55285 -0.0599 0.3150 0.01905 10 3 31 55286 -0.0608 0.3169 0.01722 10 4 1 55287 -0.0611 0.3193 0.01572 _______________________________________________________________________ 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 = 0.0762 - 0.0434 cos A + 0.1053 sin A - 0.0912 cos C - 0.0452 sin C y = 0.3501 + 0.0952 cos A + 0.0372 sin A - 0.0452 cos C + 0.0912 sin C UT1-UTC = 0.0084 - 0.00086 (MJD - 55330) - (UT2-UT1) where A = 2*pi*(MJD-55322)/365.25 and C = 2*pi*(MJD-55322)/435. TAI-UTC(MJD 55323) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55322)**0.80 S t = 0.00025 (MJD-55322)**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 7 55323 -0.0634 0.4021 -0.02698 2010 5 8 55324 -0.0620 0.4046 -0.02800 2010 5 9 55325 -0.0607 0.4070 -0.02915 2010 5 10 55326 -0.0594 0.4094 -0.03038 2010 5 11 55327 -0.0582 0.4116 -0.03161 2010 5 12 55328 -0.0569 0.4138 -0.03277 2010 5 13 55329 -0.0556 0.4160 -0.03380 2010 5 14 55330 -0.0543 0.4181 -0.03467 2010 5 15 55331 -0.0529 0.4202 -0.03540 2010 5 16 55332 -0.0515 0.4223 -0.03601 2010 5 17 55333 -0.0501 0.4244 -0.03658 2010 5 18 55334 -0.0486 0.4264 -0.03717 2010 5 19 55335 -0.0471 0.4284 -0.03784 2010 5 20 55336 -0.0456 0.4304 -0.03870 2010 5 21 55337 -0.0440 0.4323 -0.03977 2010 5 22 55338 -0.0424 0.4343 -0.04100 2010 5 23 55339 -0.0408 0.4362 -0.04227 2010 5 24 55340 -0.0391 0.4381 -0.04346 2010 5 25 55341 -0.0375 0.4399 -0.04447 2010 5 26 55342 -0.0358 0.4418 -0.04524 2010 5 27 55343 -0.0340 0.4436 -0.04579 2010 5 28 55344 -0.0323 0.4453 -0.04615 2010 5 29 55345 -0.0305 0.4471 -0.04641 2010 5 30 55346 -0.0287 0.4488 -0.04663 2010 5 31 55347 -0.0269 0.4505 -0.04687 2010 6 1 55348 -0.0250 0.4522 -0.04719 2010 6 2 55349 -0.0231 0.4538 -0.04760 2010 6 3 55350 -0.0212 0.4554 -0.04811 2010 6 4 55351 -0.0193 0.4570 -0.04870 2010 6 5 55352 -0.0174 0.4585 -0.04933 2010 6 6 55353 -0.0154 0.4600 -0.04998 2010 6 7 55354 -0.0134 0.4615 -0.05058 2010 6 8 55355 -0.0114 0.4629 -0.05107 2010 6 9 55356 -0.0094 0.4643 -0.05141 2010 6 10 55357 -0.0073 0.4657 -0.05157 2010 6 11 55358 -0.0053 0.4671 -0.05156 2010 6 12 55359 -0.0032 0.4684 -0.05144 2010 6 13 55360 -0.0011 0.4697 -0.05128 2010 6 14 55361 0.0010 0.4709 -0.05120 2010 6 15 55362 0.0031 0.4722 -0.05128 2010 6 16 55363 0.0053 0.4733 -0.05159 2010 6 17 55364 0.0074 0.4745 -0.05212 2010 6 18 55365 0.0096 0.4756 -0.05277 2010 6 19 55366 0.0118 0.4767 -0.05345 2010 6 20 55367 0.0140 0.4777 -0.05404 2010 6 21 55368 0.0162 0.4788 -0.05445 2010 6 22 55369 0.0184 0.4797 -0.05464 2010 6 23 55370 0.0207 0.4807 -0.05460 2010 6 24 55371 0.0229 0.4816 -0.05438 2010 6 25 55372 0.0252 0.4825 -0.05405 2010 6 26 55373 0.0274 0.4833 -0.05368 2010 6 27 55374 0.0297 0.4841 -0.05335 2010 6 28 55375 0.0320 0.4849 -0.05309 2010 6 29 55376 0.0343 0.4856 -0.05295 2010 6 30 55377 0.0366 0.4863 -0.05294 2010 7 1 55378 0.0389 0.4870 -0.05303 2010 7 2 55379 0.0412 0.4876 -0.05321 2010 7 3 55380 0.0435 0.4882 -0.05343 2010 7 4 55381 0.0458 0.4887 -0.05365 2010 7 5 55382 0.0481 0.4893 -0.05381 2010 7 6 55383 0.0504 0.4897 -0.05387 2010 7 7 55384 0.0528 0.4902 -0.05380 2010 7 8 55385 0.0551 0.4906 -0.05359 2010 7 9 55386 0.0574 0.4910 -0.05328 2010 7 10 55387 0.0597 0.4913 -0.05292 2010 7 11 55388 0.0621 0.4916 -0.05262 2010 7 12 55389 0.0644 0.4919 -0.05249 2010 7 13 55390 0.0667 0.4921 -0.05260 2010 7 14 55391 0.0690 0.4923 -0.05295 2010 7 15 55392 0.0714 0.4924 -0.05349 2010 7 16 55393 0.0737 0.4925 -0.05410 2010 7 17 55394 0.0760 0.4926 -0.05463 2010 7 18 55395 0.0783 0.4927 -0.05499 2010 7 19 55396 0.0806 0.4927 -0.05509 2010 7 20 55397 0.0829 0.4927 -0.05495 2010 7 21 55398 0.0852 0.4926 -0.05459 2010 7 22 55399 0.0875 0.4925 -0.05411 2010 7 23 55400 0.0898 0.4924 -0.05358 2010 7 24 55401 0.0921 0.4922 -0.05307 2010 7 25 55402 0.0943 0.4920 -0.05265 2010 7 26 55403 0.0966 0.4918 -0.05235 2010 7 27 55404 0.0988 0.4915 -0.05220 2010 7 28 55405 0.1011 0.4912 -0.05218 2010 7 29 55406 0.1033 0.4908 -0.05226 2010 7 30 55407 0.1055 0.4905 -0.05239 2010 7 31 55408 0.1077 0.4901 -0.05254 2010 8 1 55409 0.1099 0.4896 -0.05264 2010 8 2 55410 0.1121 0.4891 -0.05266 2010 8 3 55411 0.1142 0.4886 -0.05257 2010 8 4 55412 0.1164 0.4881 -0.05236 2010 8 5 55413 0.1185 0.4875 -0.05205 2010 8 6 55414 0.1207 0.4869 -0.05169 2010 8 7 55415 0.1228 0.4863 -0.05137 2010 8 8 55416 0.1248 0.4856 -0.05119 2010 8 9 55417 0.1269 0.4849 -0.05125 2010 8 10 55418 0.1290 0.4841 -0.05159 2010 8 11 55419 0.1310 0.4834 -0.05220 2010 8 12 55420 0.1330 0.4826 -0.05296 2010 8 13 55421 0.1350 0.4817 -0.05372 2010 8 14 55422 0.1370 0.4809 -0.05434 2010 8 15 55423 0.1390 0.4800 -0.05472 2010 8 16 55424 0.1409 0.4791 -0.05483 2010 8 17 55425 0.1429 0.4781 -0.05472 2010 8 18 55426 0.1448 0.4771 -0.05445 2010 8 19 55427 0.1467 0.4761 -0.05411 2010 8 20 55428 0.1485 0.4751 -0.05378 2010 8 21 55429 0.1504 0.4740 -0.05353 2010 8 22 55430 0.1522 0.4729 -0.05339 2010 8 23 55431 0.1540 0.4718 -0.05342 2010 8 24 55432 0.1558 0.4706 -0.05359 2010 8 25 55433 0.1575 0.4694 -0.05388 2010 8 26 55434 0.1592 0.4682 -0.05426 2010 8 27 55435 0.1609 0.4670 -0.05466 2010 8 28 55436 0.1626 0.4658 -0.05504 2010 8 29 55437 0.1643 0.4645 -0.05536 2010 8 30 55438 0.1659 0.4632 -0.05559 2010 8 31 55439 0.1675 0.4618 -0.05571 2010 9 1 55440 0.1691 0.4605 -0.05574 2010 9 2 55441 0.1706 0.4591 -0.05571 2010 9 3 55442 0.1721 0.4577 -0.05569 2010 9 4 55443 0.1736 0.4563 -0.05577 2010 9 5 55444 0.1751 0.4548 -0.05606 2010 9 6 55445 0.1765 0.4534 -0.05663 2010 9 7 55446 0.1779 0.4519 -0.05749 2010 9 8 55447 0.1793 0.4504 -0.05860 2010 9 9 55448 0.1807 0.4489 -0.05982 2010 9 10 55449 0.1820 0.4473 -0.06099 2010 9 11 55450 0.1833 0.4457 -0.06198 2010 9 12 55451 0.1846 0.4442 -0.06270 2010 9 13 55452 0.1858 0.4425 -0.06317 2010 9 14 55453 0.1870 0.4409 -0.06344 2010 9 15 55454 0.1882 0.4393 -0.06361 2010 9 16 55455 0.1893 0.4376 -0.06377 2010 9 17 55456 0.1904 0.4359 -0.06399 2010 9 18 55457 0.1915 0.4343 -0.06432 2010 9 19 55458 0.1926 0.4325 -0.06479 2010 9 20 55459 0.1936 0.4308 -0.06539 2010 9 21 55460 0.1946 0.4291 -0.06612 2010 9 22 55461 0.1956 0.4273 -0.06694 2010 9 23 55462 0.1965 0.4256 -0.06781 2010 9 24 55463 0.1974 0.4238 -0.06866 2010 9 25 55464 0.1982 0.4220 -0.06947 2010 9 26 55465 0.1991 0.4202 -0.07018 2010 9 27 55466 0.1999 0.4184 -0.07078 2010 9 28 55467 0.2006 0.4166 -0.07128 2010 9 29 55468 0.2014 0.4147 -0.07170 2010 9 30 55469 0.2021 0.4129 -0.07210 2010 10 1 55470 0.2028 0.4110 -0.07257 2010 10 2 55471 0.2034 0.4092 -0.07319 2010 10 3 55472 0.2040 0.4073 -0.07405 2010 10 4 55473 0.2046 0.4054 -0.07518 2010 10 5 55474 0.2051 0.4035 -0.07658 2010 10 6 55475 0.2056 0.4016 -0.07815 2010 10 7 55476 0.2061 0.3997 -0.07976 2010 10 8 55477 0.2066 0.3978 -0.08126 2010 10 9 55478 0.2070 0.3959 -0.08254 2010 10 10 55479 0.2073 0.3940 -0.08356 2010 10 11 55480 0.2077 0.3921 -0.08435 2010 10 12 55481 0.2080 0.3901 -0.08498 2010 10 13 55482 0.2083 0.3882 -0.08556 2010 10 14 55483 0.2085 0.3863 -0.08618 2010 10 15 55484 0.2087 0.3843 -0.08688 2010 10 16 55485 0.2089 0.3824 -0.08770 2010 10 17 55486 0.2091 0.3805 -0.08865 2010 10 18 55487 0.2092 0.3785 -0.08971 2010 10 19 55488 0.2093 0.3766 -0.09087 2010 10 20 55489 0.2093 0.3746 -0.09207 2010 10 21 55490 0.2094 0.3727 -0.09328 2010 10 22 55491 0.2093 0.3708 -0.09444 2010 10 23 55492 0.2093 0.3688 -0.09551 2010 10 24 55493 0.2092 0.3669 -0.09646 2010 10 25 55494 0.2091 0.3650 -0.09729 2010 10 26 55495 0.2090 0.3630 -0.09803 2010 10 27 55496 0.2088 0.3611 -0.09873 2010 10 28 55497 0.2086 0.3592 -0.09945 2010 10 29 55498 0.2084 0.3573 -0.10028 2010 10 30 55499 0.2081 0.3554 -0.10130 2010 10 31 55500 0.2078 0.3535 -0.10254 2010 11 1 55501 0.2075 0.3516 -0.10402 2010 11 2 55502 0.2071 0.3497 -0.10568 2010 11 3 55503 0.2067 0.3478 -0.10741 2010 11 4 55504 0.2063 0.3459 -0.10910 2010 11 5 55505 0.2059 0.3441 -0.11062 2010 11 6 55506 0.2054 0.3422 -0.11190 2010 11 7 55507 0.2049 0.3403 -0.11294 2010 11 8 55508 0.2044 0.3385 -0.11378 2010 11 9 55509 0.2038 0.3367 -0.11451 2010 11 10 55510 0.2032 0.3349 -0.11523 2010 11 11 55511 0.2026 0.3330 -0.11599 2010 11 12 55512 0.2020 0.3312 -0.11684 2010 11 13 55513 0.2013 0.3295 -0.11780 2010 11 14 55514 0.2006 0.3277 -0.11884 2010 11 15 55515 0.1999 0.3259 -0.11996 2010 11 16 55516 0.1991 0.3242 -0.12109 2010 11 17 55517 0.1983 0.3224 -0.12220 2010 11 18 55518 0.1975 0.3207 -0.12323 2010 11 19 55519 0.1967 0.3190 -0.12413 2010 11 20 55520 0.1958 0.3173 -0.12488 2010 11 21 55521 0.1949 0.3156 -0.12547 2010 11 22 55522 0.1940 0.3140 -0.12593 2010 11 23 55523 0.1931 0.3123 -0.12630 2010 11 24 55524 0.1921 0.3107 -0.12666 2010 11 25 55525 0.1911 0.3091 -0.12711 2010 11 26 55526 0.1901 0.3075 -0.12773 2010 11 27 55527 0.1891 0.3059 -0.12856 2010 11 28 55528 0.1880 0.3043 -0.12963 2010 11 29 55529 0.1870 0.3028 -0.13086 2010 11 30 55530 0.1859 0.3012 -0.13218 2010 12 1 55531 0.1847 0.2997 -0.13348 2010 12 2 55532 0.1836 0.2982 -0.13465 2010 12 3 55533 0.1824 0.2968 -0.13562 2010 12 4 55534 0.1813 0.2953 -0.13638 2010 12 5 55535 0.1801 0.2939 -0.13694 2010 12 6 55536 0.1788 0.2925 -0.13737 2010 12 7 55537 0.1776 0.2911 -0.13775 2010 12 8 55538 0.1763 0.2897 -0.13814 2010 12 9 55539 0.1750 0.2884 -0.13861 2010 12 10 55540 0.1737 0.2870 -0.13918 2010 12 11 55541 0.1724 0.2857 -0.13983 2010 12 12 55542 0.1711 0.2844 -0.14054 2010 12 13 55543 0.1697 0.2832 -0.14128 2010 12 14 55544 0.1684 0.2819 -0.14203 2010 12 15 55545 0.1670 0.2807 -0.14277 2010 12 16 55546 0.1656 0.2795 -0.14351 2010 12 17 55547 0.1642 0.2783 -0.14419 2010 12 18 55548 0.1628 0.2772 -0.14478 2010 12 19 55549 0.1613 0.2761 -0.14526 2010 12 20 55550 0.1599 0.2750 -0.14567 2010 12 21 55551 0.1584 0.2739 -0.14606 2010 12 22 55552 0.1569 0.2728 -0.14656 2010 12 23 55553 0.1554 0.2718 -0.14723 2010 12 24 55554 0.1539 0.2708 -0.14809 2010 12 25 55555 0.1524 0.2698 -0.14921 2010 12 26 55556 0.1508 0.2688 -0.15051 2010 12 27 55557 0.1493 0.2679 -0.15183 2010 12 28 55558 0.1478 0.2670 -0.15302 2010 12 29 55559 0.1462 0.2661 -0.15401 2010 12 30 55560 0.1446 0.2653 -0.15484 2010 12 31 55561 0.1430 0.2644 -0.15551 2011 1 1 55562 0.1415 0.2636 -0.15598 2011 1 2 55563 0.1399 0.2628 -0.15631 2011 1 3 55564 0.1383 0.2621 -0.15655 2011 1 4 55565 0.1366 0.2614 -0.15686 2011 1 5 55566 0.1350 0.2607 -0.15728 2011 1 6 55567 0.1334 0.2600 -0.15782 2011 1 7 55568 0.1318 0.2593 -0.15845 2011 1 8 55569 0.1301 0.2587 -0.15921 2011 1 9 55570 0.1285 0.2581 -0.16003 2011 1 10 55571 0.1269 0.2575 -0.16086 2011 1 11 55572 0.1252 0.2570 -0.16171 2011 1 12 55573 0.1236 0.2565 -0.16253 2011 1 13 55574 0.1219 0.2560 -0.16326 2011 1 14 55575 0.1203 0.2555 -0.16387 2011 1 15 55576 0.1186 0.2551 -0.16438 2011 1 16 55577 0.1169 0.2547 -0.16481 2011 1 17 55578 0.1153 0.2543 -0.16525 2011 1 18 55579 0.1136 0.2539 -0.16577 2011 1 19 55580 0.1120 0.2536 -0.16643 2011 1 20 55581 0.1103 0.2533 -0.16733 2011 1 21 55582 0.1086 0.2530 -0.16847 2011 1 22 55583 0.1070 0.2527 -0.16982 2011 1 23 55584 0.1053 0.2525 -0.17132 2011 1 24 55585 0.1037 0.2523 -0.17283 2011 1 25 55586 0.1020 0.2521 -0.17424 2011 1 26 55587 0.1004 0.2520 -0.17549 2011 1 27 55588 0.0987 0.2519 -0.17653 2011 1 28 55589 0.0971 0.2518 -0.17738 2011 1 29 55590 0.0955 0.2517 -0.17805 2011 1 30 55591 0.0938 0.2516 -0.17861 2011 1 31 55592 0.0922 0.2516 -0.17916 2011 2 1 55593 0.0906 0.2516 -0.17976 2011 2 2 55594 0.0890 0.2517 -0.18045 2011 2 3 55595 0.0874 0.2517 -0.18125 2011 2 4 55596 0.0857 0.2518 -0.18218 2011 2 5 55597 0.0842 0.2519 -0.18320 2011 2 6 55598 0.0826 0.2520 -0.18428 2011 2 7 55599 0.0810 0.2522 -0.18536 2011 2 8 55600 0.0794 0.2524 -0.18639 2011 2 9 55601 0.0779 0.2526 -0.18736 2011 2 10 55602 0.0763 0.2528 -0.18827 2011 2 11 55603 0.0748 0.2530 -0.18909 2011 2 12 55604 0.0732 0.2533 -0.18986 2011 2 13 55605 0.0717 0.2536 -0.19063 2011 2 14 55606 0.0702 0.2540 -0.19145 2011 2 15 55607 0.0687 0.2543 -0.19239 2011 2 16 55608 0.0672 0.2547 -0.19353 2011 2 17 55609 0.0657 0.2551 -0.19489 2011 2 18 55610 0.0643 0.2555 -0.19652 2011 2 19 55611 0.0628 0.2559 -0.19838 2011 2 20 55612 0.0614 0.2564 -0.20028 2011 2 21 55613 0.0599 0.2569 -0.20212 2011 2 22 55614 0.0585 0.2574 -0.20383 2011 2 23 55615 0.0571 0.2579 -0.20527 2011 2 24 55616 0.0557 0.2585 -0.20644 2011 2 25 55617 0.0544 0.2590 -0.20744 2011 2 26 55618 0.0530 0.2596 -0.20838 2011 2 27 55619 0.0517 0.2602 -0.20932 2011 2 28 55620 0.0503 0.2609 -0.21033 2011 3 1 55621 0.0490 0.2615 -0.21144 2011 3 2 55622 0.0477 0.2622 -0.21261 2011 3 3 55623 0.0465 0.2629 -0.21385 2011 3 4 55624 0.0452 0.2636 -0.21514 2011 3 5 55625 0.0440 0.2643 -0.21646 2011 3 6 55626 0.0427 0.2651 -0.21780 2011 3 7 55627 0.0415 0.2659 -0.21919 2011 3 8 55628 0.0403 0.2666 -0.22055 2011 3 9 55629 0.0391 0.2674 -0.22183 2011 3 10 55630 0.0380 0.2683 -0.22297 2011 3 11 55631 0.0369 0.2691 -0.22396 2011 3 12 55632 0.0357 0.2700 -0.22482 2011 3 13 55633 0.0346 0.2708 -0.22565 2011 3 14 55634 0.0335 0.2717 -0.22653 2011 3 15 55635 0.0325 0.2726 -0.22753 2011 3 16 55636 0.0314 0.2736 -0.22878 2011 3 17 55637 0.0304 0.2745 -0.23032 2011 3 18 55638 0.0294 0.2754 -0.23209 2011 3 19 55639 0.0284 0.2764 -0.23406 2011 3 20 55640 0.0275 0.2774 -0.23609 2011 3 21 55641 0.0265 0.2784 -0.23799 2011 3 22 55642 0.0256 0.2794 -0.23968 2011 3 23 55643 0.0247 0.2804 -0.24112 2011 3 24 55644 0.0238 0.2815 -0.24235 2011 3 25 55645 0.0229 0.2825 -0.24342 2011 3 26 55646 0.0221 0.2836 -0.24439 2011 3 27 55647 0.0213 0.2847 -0.24536 2011 3 28 55648 0.0205 0.2857 -0.24642 2011 3 29 55649 0.0197 0.2868 -0.24760 2011 3 30 55650 0.0189 0.2879 -0.24887 2011 3 31 55651 0.0182 0.2891 -0.25022 2011 4 1 55652 0.0175 0.2902 -0.25163 2011 4 2 55653 0.0168 0.2913 -0.25305 2011 4 3 55654 0.0161 0.2925 -0.25448 2011 4 4 55655 0.0155 0.2936 -0.25594 2011 4 5 55656 0.0148 0.2948 -0.25737 2011 4 6 55657 0.0142 0.2960 -0.25876 2011 4 7 55658 0.0137 0.2972 -0.26007 2011 4 8 55659 0.0131 0.2984 -0.26133 2011 4 9 55660 0.0126 0.2996 -0.26254 2011 4 10 55661 0.0120 0.3008 -0.26378 2011 4 11 55662 0.0115 0.3020 -0.26512 2011 4 12 55663 0.0111 0.3032 -0.26659 2011 4 13 55664 0.0106 0.3044 -0.26830 2011 4 14 55665 0.0102 0.3056 -0.27028 2011 4 15 55666 0.0098 0.3069 -0.27250 2011 4 16 55667 0.0094 0.3081 -0.27481 2011 4 17 55668 0.0090 0.3094 -0.27704 2011 4 18 55669 0.0087 0.3106 -0.27909 2011 4 19 55670 0.0084 0.3119 -0.28088 2011 4 20 55671 0.0081 0.3131 -0.28239 2011 4 21 55672 0.0078 0.3144 -0.28371 2011 4 22 55673 0.0076 0.3157 -0.28489 2011 4 23 55674 0.0073 0.3169 -0.28607 2011 4 24 55675 0.0071 0.3182 -0.28730 2011 4 25 55676 0.0069 0.3195 -0.28861 2011 4 26 55677 0.0068 0.3207 -0.29000 2011 4 27 55678 0.0066 0.3220 -0.29148 2011 4 28 55679 0.0065 0.3233 -0.29302 2011 4 29 55680 0.0064 0.3245 -0.29454 2011 4 30 55681 0.0063 0.3258 -0.29598 2011 5 1 55682 0.0063 0.3271 -0.29736 2011 5 2 55683 0.0062 0.3284 -0.29866 2011 5 3 55684 0.0062 0.3296 -0.29987 2011 5 4 55685 0.0062 0.3309 -0.30096 2011 5 5 55686 0.0063 0.3322 -0.30191 2011 5 6 55687 0.0063 0.3334 -0.30275 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) 55303 -62.72 0.25 -9.65 0.34 55304 -62.72 0.24 -9.70 0.34 55305 -62.73 0.24 -9.82 0.34 55306 -62.76 0.23 -10.02 0.34 55307 -62.71 0.19 -10.27 0.34 55308 -62.56 0.19 -10.51 0.34 55309 -62.34 0.19 -10.63 0.34 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 55257 -64.2 -6.8 55258 -64.2 -7.0 55259 -64.3 -7.2 55260 -64.4 -7.3 55261 -64.4 -7.6 55262 -64.4 -7.9 55263 -64.4 -8.2 55264 -64.5 -8.2 55265 -64.4 -8.1 55266 -64.0 -8.1 55267 -63.6 -8.0 55268 -63.3 -7.8 55269 -63.3 -7.5 55270 -63.4 -7.5 55271 -63.4 -7.8 55272 -63.3 -8.2 55273 -63.1 -8.5 55274 -62.9 -8.5 55275 -62.9 -8.4 55276 -63.0 -8.2 55277 -63.3 -8.2 55278 -63.6 -8.4 55279 -63.8 -8.8 55280 -63.6 -9.3 55281 -63.3 -9.7 55282 -63.0 -9.7 55283 -62.9 -9.2 55284 -63.0 -8.7 55285 -63.1 -8.4 55286 -63.2 -8.5 55287 -63.3 -8.8 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55303 -0.218 0.099 -0.108 0.340 55304 -0.217 0.095 -0.146 0.340 55305 -0.211 0.095 -0.160 0.340 55306 -0.212 0.091 -0.159 0.340 55307 -0.219 0.076 -0.147 0.340 55308 -0.244 0.076 -0.134 0.340 55309 -0.269 0.076 -0.126 0.340 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 55257 -0.22 -0.12 55258 -0.14 -0.24 55259 -0.08 -0.32 55260 -0.05 -0.23 55261 -0.09 -0.23 55262 -0.20 -0.21 55263 -0.25 -0.31 55264 -0.23 -0.27 55265 -0.11 -0.18 55266 0.03 -0.17 55267 0.06 -0.11 55268 0.03 -0.07 55269 -0.07 0.04 55270 -0.17 -0.01 55271 -0.19 -0.13 55272 -0.14 -0.24 55273 -0.06 -0.33 55274 0.01 -0.27 55275 -0.02 -0.19 55276 -0.04 0.00 55277 -0.08 0.06 55278 -0.09 0.02 55279 -0.10 -0.07 55280 -0.06 -0.17 55281 -0.08 -0.29 55282 -0.12 -0.36 55283 -0.17 -0.28 55284 -0.20 -0.22 55285 -0.16 -0.09 55286 -0.11 -0.07 55287 -0.09 -0.10 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.