********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 11 March 2010 Vol. XXIII No. 010 ______________________________________________________________________ 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 ********************************************************************** * As of Bulletin A Vol. XXIII, No. 010, on 11 March 2010, we have * * updated the IVS VLBI systematic bias and slope corrections. * * The effect appears to be less than 0.05 mas in polar motion and * * 10 us in UT1-UTC. * ********************************************************************** ________________________________________________________________________ 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 3 5 55260 -.03909 .00009 0.26391 .00009 0.046027 0.000012 10 3 6 55261 -.03993 .00009 0.26592 .00009 0.044936 0.000014 10 3 7 55262 -.04127 .00009 0.26773 .00009 0.044036 0.000014 10 3 8 55263 -.04297 .00009 0.26943 .00009 0.043258 0.000013 10 3 9 55264 -.04476 .00009 0.27096 .00009 0.042459 0.000012 10 3 10 55265 -.04612 .00009 0.27242 .00009 0.041569 0.000065 10 3 11 55266 -.04717 .00009 0.27396 .00009 0.040591 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 = 0.0868 - 0.1210 cos A + 0.0493 sin A - 0.0111 cos C - 0.1132 sin C y = 0.3458 + 0.0431 cos A + 0.1088 sin A - 0.1132 cos C + 0.0111 sin C UT1-UTC = 0.0474 - 0.00088 (MJD - 55274) - (UT2-UT1) where A = 2*pi*(MJD-55266)/365.25 and C = 2*pi*(MJD-55266)/435. TAI-UTC(MJD 55267) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55266)**0.80 S t = 0.00025 (MJD-55266)**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 3 12 55267 -0.0481 0.2757 0.03952 2010 3 13 55268 -0.0490 0.2776 0.03836 2010 3 14 55269 -0.0498 0.2795 0.03712 2010 3 15 55270 -0.0506 0.2815 0.03584 2010 3 16 55271 -0.0515 0.2835 0.03453 2010 3 17 55272 -0.0523 0.2856 0.03324 2010 3 18 55273 -0.0530 0.2876 0.03202 2010 3 19 55274 -0.0538 0.2897 0.03092 2010 3 20 55275 -0.0545 0.2918 0.02996 2010 3 21 55276 -0.0552 0.2939 0.02914 2010 3 22 55277 -0.0558 0.2960 0.02839 2010 3 23 55278 -0.0564 0.2982 0.02759 2010 3 24 55279 -0.0570 0.3003 0.02666 2010 3 25 55280 -0.0575 0.3024 0.02552 2010 3 26 55281 -0.0580 0.3046 0.02409 2010 3 27 55282 -0.0585 0.3067 0.02237 2010 3 28 55283 -0.0589 0.3089 0.02041 2010 3 29 55284 -0.0592 0.3110 0.01832 2010 3 30 55285 -0.0596 0.3132 0.01627 2010 3 31 55286 -0.0599 0.3154 0.01438 2010 4 1 55287 -0.0601 0.3176 0.01272 2010 4 2 55288 -0.0604 0.3197 0.01131 2010 4 3 55289 -0.0606 0.3219 0.01009 2010 4 4 55290 -0.0607 0.3241 0.00899 2010 4 5 55291 -0.0608 0.3263 0.00795 2010 4 6 55292 -0.0609 0.3285 0.00690 2010 4 7 55293 -0.0609 0.3306 0.00578 2010 4 8 55294 -0.0609 0.3328 0.00454 2010 4 9 55295 -0.0609 0.3350 0.00316 2010 4 10 55296 -0.0608 0.3372 0.00164 2010 4 11 55297 -0.0607 0.3394 0.00000 2010 4 12 55298 -0.0606 0.3415 -0.00169 2010 4 13 55299 -0.0604 0.3437 -0.00337 2010 4 14 55300 -0.0601 0.3459 -0.00498 2010 4 15 55301 -0.0599 0.3480 -0.00647 2010 4 16 55302 -0.0596 0.3502 -0.00781 2010 4 17 55303 -0.0592 0.3524 -0.00898 2010 4 18 55304 -0.0589 0.3545 -0.01002 2010 4 19 55305 -0.0585 0.3566 -0.01100 2010 4 20 55306 -0.0580 0.3588 -0.01199 2010 4 21 55307 -0.0575 0.3609 -0.01311 2010 4 22 55308 -0.0570 0.3630 -0.01442 2010 4 23 55309 -0.0565 0.3651 -0.01595 2010 4 24 55310 -0.0559 0.3672 -0.01768 2010 4 25 55311 -0.0553 0.3693 -0.01953 2010 4 26 55312 -0.0546 0.3714 -0.02137 2010 4 27 55313 -0.0539 0.3735 -0.02306 2010 4 28 55314 -0.0532 0.3755 -0.02452 2010 4 29 55315 -0.0524 0.3776 -0.02572 2010 4 30 55316 -0.0517 0.3796 -0.02667 2010 5 1 55317 -0.0508 0.3816 -0.02745 2010 5 2 55318 -0.0500 0.3836 -0.02816 2010 5 3 55319 -0.0491 0.3856 -0.02886 2010 5 4 55320 -0.0482 0.3876 -0.02962 2010 5 5 55321 -0.0472 0.3895 -0.03049 2010 5 6 55322 -0.0462 0.3915 -0.03146 2010 5 7 55323 -0.0452 0.3934 -0.03255 2010 5 8 55324 -0.0442 0.3953 -0.03372 2010 5 9 55325 -0.0431 0.3972 -0.03493 2010 5 10 55326 -0.0420 0.3991 -0.03615 2010 5 11 55327 -0.0408 0.4009 -0.03732 2010 5 12 55328 -0.0397 0.4028 -0.03837 2010 5 13 55329 -0.0385 0.4046 -0.03928 2010 5 14 55330 -0.0372 0.4064 -0.04003 2010 5 15 55331 -0.0360 0.4082 -0.04063 2010 5 16 55332 -0.0347 0.4099 -0.04114 2010 5 17 55333 -0.0334 0.4117 -0.04165 2010 5 18 55334 -0.0321 0.4134 -0.04225 2010 5 19 55335 -0.0307 0.4151 -0.04302 2010 5 20 55336 -0.0293 0.4168 -0.04398 2010 5 21 55337 -0.0279 0.4184 -0.04512 2010 5 22 55338 -0.0265 0.4200 -0.04636 2010 5 23 55339 -0.0250 0.4217 -0.04759 2010 5 24 55340 -0.0235 0.4232 -0.04871 2010 5 25 55341 -0.0220 0.4248 -0.04962 2010 5 26 55342 -0.0205 0.4263 -0.05029 2010 5 27 55343 -0.0189 0.4278 -0.05071 2010 5 28 55344 -0.0173 0.4293 -0.05093 2010 5 29 55345 -0.0157 0.4308 -0.05103 2010 5 30 55346 -0.0141 0.4322 -0.05109 2010 5 31 55347 -0.0124 0.4336 -0.05117 2010 6 1 55348 -0.0108 0.4350 -0.05134 2010 6 2 55349 -0.0091 0.4364 -0.05161 2010 6 3 55350 -0.0074 0.4377 -0.05199 2010 6 4 55351 -0.0056 0.4390 -0.05246 2010 6 5 55352 -0.0039 0.4403 -0.05298 2010 6 6 55353 -0.0021 0.4415 -0.05352 2010 6 7 55354 -0.0004 0.4428 -0.05402 2010 6 8 55355 0.0014 0.4440 -0.05443 2010 6 9 55356 0.0033 0.4451 -0.05471 2010 6 10 55357 0.0051 0.4463 -0.05485 2010 6 11 55358 0.0069 0.4474 -0.05483 2010 6 12 55359 0.0088 0.4484 -0.05472 2010 6 13 55360 0.0107 0.4495 -0.05459 2010 6 14 55361 0.0125 0.4505 -0.05453 2010 6 15 55362 0.0144 0.4515 -0.05465 2010 6 16 55363 0.0164 0.4525 -0.05499 2010 6 17 55364 0.0183 0.4534 -0.05553 2010 6 18 55365 0.0202 0.4543 -0.05619 2010 6 19 55366 0.0222 0.4552 -0.05688 2010 6 20 55367 0.0241 0.4560 -0.05746 2010 6 21 55368 0.0261 0.4568 -0.05785 2010 6 22 55369 0.0281 0.4576 -0.05801 2010 6 23 55370 0.0301 0.4583 -0.05794 2010 6 24 55371 0.0321 0.4590 -0.05767 2010 6 25 55372 0.0341 0.4597 -0.05728 2010 6 26 55373 0.0361 0.4604 -0.05684 2010 6 27 55374 0.0381 0.4610 -0.05643 2010 6 28 55375 0.0401 0.4616 -0.05612 2010 6 29 55376 0.0421 0.4622 -0.05593 2010 6 30 55377 0.0441 0.4627 -0.05586 2010 7 1 55378 0.0462 0.4632 -0.05590 2010 7 2 55379 0.0482 0.4636 -0.05602 2010 7 3 55380 0.0503 0.4641 -0.05617 2010 7 4 55381 0.0523 0.4645 -0.05631 2010 7 5 55382 0.0543 0.4648 -0.05639 2010 7 6 55383 0.0564 0.4652 -0.05637 2010 7 7 55384 0.0584 0.4655 -0.05621 2010 7 8 55385 0.0605 0.4658 -0.05592 2010 7 9 55386 0.0625 0.4660 -0.05552 2010 7 10 55387 0.0646 0.4662 -0.05509 2010 7 11 55388 0.0666 0.4664 -0.05471 2010 7 12 55389 0.0687 0.4665 -0.05450 2010 7 13 55390 0.0707 0.4666 -0.05454 2010 7 14 55391 0.0727 0.4667 -0.05483 2010 7 15 55392 0.0748 0.4668 -0.05531 2010 7 16 55393 0.0768 0.4668 -0.05586 2010 7 17 55394 0.0788 0.4668 -0.05633 2010 7 18 55395 0.0808 0.4668 -0.05663 2010 7 19 55396 0.0829 0.4667 -0.05669 2010 7 20 55397 0.0849 0.4666 -0.05650 2010 7 21 55398 0.0869 0.4664 -0.05612 2010 7 22 55399 0.0889 0.4663 -0.05560 2010 7 23 55400 0.0908 0.4661 -0.05503 2010 7 24 55401 0.0928 0.4659 -0.05447 2010 7 25 55402 0.0948 0.4656 -0.05400 2010 7 26 55403 0.0967 0.4653 -0.05365 2010 7 27 55404 0.0987 0.4650 -0.05343 2010 7 28 55405 0.1006 0.4646 -0.05335 2010 7 29 55406 0.1025 0.4643 -0.05336 2010 7 30 55407 0.1045 0.4639 -0.05343 2010 7 31 55408 0.1064 0.4634 -0.05352 2010 8 1 55409 0.1082 0.4630 -0.05356 2010 8 2 55410 0.1101 0.4625 -0.05353 2010 8 3 55411 0.1120 0.4619 -0.05340 2010 8 4 55412 0.1138 0.4614 -0.05314 2010 8 5 55413 0.1157 0.4608 -0.05279 2010 8 6 55414 0.1175 0.4602 -0.05239 2010 8 7 55415 0.1193 0.4596 -0.05202 2010 8 8 55416 0.1211 0.4589 -0.05180 2010 8 9 55417 0.1228 0.4582 -0.05182 2010 8 10 55418 0.1246 0.4575 -0.05213 2010 8 11 55419 0.1263 0.4567 -0.05270 2010 8 12 55420 0.1280 0.4560 -0.05344 2010 8 13 55421 0.1297 0.4552 -0.05419 2010 8 14 55422 0.1314 0.4544 -0.05480 2010 8 15 55423 0.1331 0.4535 -0.05517 2010 8 16 55424 0.1347 0.4526 -0.05529 2010 8 17 55425 0.1364 0.4517 -0.05518 2010 8 18 55426 0.1380 0.4508 -0.05491 2010 8 19 55427 0.1396 0.4499 -0.05459 2010 8 20 55428 0.1411 0.4489 -0.05427 2010 8 21 55429 0.1427 0.4479 -0.05404 2010 8 22 55430 0.1442 0.4469 -0.05392 2010 8 23 55431 0.1457 0.4458 -0.05395 2010 8 24 55432 0.1472 0.4448 -0.05412 2010 8 25 55433 0.1486 0.4437 -0.05441 2010 8 26 55434 0.1500 0.4426 -0.05479 2010 8 27 55435 0.1514 0.4415 -0.05519 2010 8 28 55436 0.1528 0.4403 -0.05557 2010 8 29 55437 0.1542 0.4391 -0.05589 2010 8 30 55438 0.1555 0.4380 -0.05612 2010 8 31 55439 0.1568 0.4367 -0.05623 2010 9 1 55440 0.1581 0.4355 -0.05625 2010 9 2 55441 0.1594 0.4343 -0.05620 2010 9 3 55442 0.1606 0.4330 -0.05615 2010 9 4 55443 0.1618 0.4317 -0.05620 2010 9 5 55444 0.1630 0.4304 -0.05645 2010 9 6 55445 0.1642 0.4291 -0.05697 2010 9 7 55446 0.1653 0.4277 -0.05777 2010 9 8 55447 0.1664 0.4264 -0.05880 2010 9 9 55448 0.1675 0.4250 -0.05991 2010 9 10 55449 0.1685 0.4236 -0.06094 2010 9 11 55450 0.1696 0.4222 -0.06176 2010 9 12 55451 0.1706 0.4208 -0.06227 2010 9 13 55452 0.1715 0.4194 -0.06248 2010 9 14 55453 0.1725 0.4179 -0.06245 2010 9 15 55454 0.1734 0.4165 -0.06227 2010 9 16 55455 0.1743 0.4150 -0.06204 2010 9 17 55456 0.1751 0.4135 -0.06184 2010 9 18 55457 0.1759 0.4120 -0.06175 2010 9 19 55458 0.1767 0.4105 -0.06182 2010 9 20 55459 0.1775 0.4090 -0.06207 2010 9 21 55460 0.1783 0.4075 -0.06250 2010 9 22 55461 0.1790 0.4059 -0.06308 2010 9 23 55462 0.1797 0.4044 -0.06376 2010 9 24 55463 0.1803 0.4028 -0.06448 2010 9 25 55464 0.1809 0.4012 -0.06519 2010 9 26 55465 0.1815 0.3996 -0.06584 2010 9 27 55466 0.1821 0.3981 -0.06642 2010 9 28 55467 0.1826 0.3965 -0.06691 2010 9 29 55468 0.1831 0.3949 -0.06736 2010 9 30 55469 0.1836 0.3933 -0.06782 2010 10 1 55470 0.1841 0.3916 -0.06837 2010 10 2 55471 0.1845 0.3900 -0.06910 2010 10 3 55472 0.1849 0.3884 -0.07008 2010 10 4 55473 0.1852 0.3868 -0.07136 2010 10 5 55474 0.1855 0.3851 -0.07292 2010 10 6 55475 0.1858 0.3835 -0.07467 2010 10 7 55476 0.1861 0.3818 -0.07647 2010 10 8 55477 0.1864 0.3802 -0.07817 2010 10 9 55478 0.1866 0.3785 -0.07965 2010 10 10 55479 0.1867 0.3769 -0.08086 2010 10 11 55480 0.1869 0.3752 -0.08183 2010 10 12 55481 0.1870 0.3736 -0.08261 2010 10 13 55482 0.1871 0.3719 -0.08332 2010 10 14 55483 0.1872 0.3703 -0.08404 2010 10 15 55484 0.1872 0.3686 -0.08483 2010 10 16 55485 0.1872 0.3669 -0.08574 2010 10 17 55486 0.1872 0.3653 -0.08677 2010 10 18 55487 0.1871 0.3636 -0.08793 2010 10 19 55488 0.1870 0.3620 -0.08918 2010 10 20 55489 0.1869 0.3603 -0.09048 2010 10 21 55490 0.1868 0.3587 -0.09183 2010 10 22 55491 0.1866 0.3571 -0.09314 2010 10 23 55492 0.1864 0.3554 -0.09440 2010 10 24 55493 0.1862 0.3538 -0.09558 2010 10 25 55494 0.1859 0.3522 -0.09668 2010 10 26 55495 0.1856 0.3505 -0.09770 2010 10 27 55496 0.1853 0.3489 -0.09866 2010 10 28 55497 0.1850 0.3473 -0.09962 2010 10 29 55498 0.1846 0.3457 -0.10067 2010 10 30 55499 0.1842 0.3441 -0.10191 2010 10 31 55500 0.1838 0.3425 -0.10334 2010 11 1 55501 0.1834 0.3409 -0.10499 2010 11 2 55502 0.1829 0.3393 -0.10687 2010 11 3 55503 0.1824 0.3378 -0.10880 2010 11 4 55504 0.1819 0.3362 -0.11066 2010 11 5 55505 0.1813 0.3347 -0.11237 2010 11 6 55506 0.1807 0.3331 -0.11387 2010 11 7 55507 0.1801 0.3316 -0.11515 2010 11 8 55508 0.1795 0.3301 -0.11626 2010 11 9 55509 0.1788 0.3286 -0.11725 2010 11 10 55510 0.1782 0.3271 -0.11818 2010 11 11 55511 0.1775 0.3256 -0.11909 2010 11 12 55512 0.1767 0.3241 -0.12006 2010 11 13 55513 0.1760 0.3226 -0.12111 2010 11 14 55514 0.1752 0.3212 -0.12227 2010 11 15 55515 0.1744 0.3198 -0.12359 2010 11 16 55516 0.1736 0.3183 -0.12499 2010 11 17 55517 0.1728 0.3169 -0.12642 2010 11 18 55518 0.1719 0.3155 -0.12776 2010 11 19 55519 0.1710 0.3142 -0.12896 2010 11 20 55520 0.1701 0.3128 -0.12998 2010 11 21 55521 0.1692 0.3114 -0.13086 2010 11 22 55522 0.1682 0.3101 -0.13160 2010 11 23 55523 0.1673 0.3088 -0.13225 2010 11 24 55524 0.1663 0.3075 -0.13291 2010 11 25 55525 0.1652 0.3062 -0.13367 2010 11 26 55526 0.1642 0.3049 -0.13457 2010 11 27 55527 0.1632 0.3037 -0.13569 2010 11 28 55528 0.1621 0.3024 -0.13704 2010 11 29 55529 0.1610 0.3012 -0.13853 2010 11 30 55530 0.1599 0.3000 -0.14012 2010 12 1 55531 0.1588 0.2988 -0.14168 2010 12 2 55532 0.1576 0.2977 -0.14313 2010 12 3 55533 0.1565 0.2965 -0.14436 2010 12 4 55534 0.1553 0.2954 -0.14533 2010 12 5 55535 0.1541 0.2943 -0.14607 2010 12 6 55536 0.1529 0.2932 -0.14669 2010 12 7 55537 0.1517 0.2921 -0.14728 2010 12 8 55538 0.1505 0.2911 -0.14790 2010 12 9 55539 0.1492 0.2901 -0.14860 2010 12 10 55540 0.1480 0.2891 -0.14939 2010 12 11 55541 0.1467 0.2881 -0.15030 2010 12 12 55542 0.1454 0.2871 -0.15132 2010 12 13 55543 0.1441 0.2861 -0.15249 2010 12 14 55544 0.1428 0.2852 -0.15375 2010 12 15 55545 0.1414 0.2843 -0.15504 2010 12 16 55546 0.1401 0.2834 -0.15629 2010 12 17 55547 0.1388 0.2826 -0.15746 2010 12 18 55548 0.1374 0.2817 -0.15850 2010 12 19 55549 0.1360 0.2809 -0.15944 2010 12 20 55550 0.1346 0.2801 -0.16030 2010 12 21 55551 0.1333 0.2793 -0.16110 2010 12 22 55552 0.1319 0.2786 -0.16197 2010 12 23 55553 0.1304 0.2779 -0.16303 2010 12 24 55554 0.1290 0.2772 -0.16432 2010 12 25 55555 0.1276 0.2765 -0.16583 2010 12 26 55556 0.1262 0.2758 -0.16748 2010 12 27 55557 0.1247 0.2752 -0.16919 2010 12 28 55558 0.1233 0.2746 -0.17086 2010 12 29 55559 0.1218 0.2740 -0.17238 2010 12 30 55560 0.1204 0.2734 -0.17370 2010 12 31 55561 0.1189 0.2729 -0.17478 2011 1 1 55562 0.1175 0.2723 -0.17567 2011 1 2 55563 0.1160 0.2718 -0.17642 2011 1 3 55564 0.1145 0.2714 -0.17712 2011 1 4 55565 0.1130 0.2709 -0.17783 2011 1 5 55566 0.1116 0.2705 -0.17864 2011 1 6 55567 0.1101 0.2701 -0.17957 2011 1 7 55568 0.1086 0.2697 -0.18059 2011 1 8 55569 0.1071 0.2693 -0.18169 2011 1 9 55570 0.1056 0.2690 -0.18286 2011 1 10 55571 0.1041 0.2687 -0.18408 2011 1 11 55572 0.1027 0.2684 -0.18532 2011 1 12 55573 0.1012 0.2681 -0.18650 2011 1 13 55574 0.0997 0.2679 -0.18756 2011 1 14 55575 0.0982 0.2677 -0.18846 2011 1 15 55576 0.0967 0.2675 -0.18925 2011 1 16 55577 0.0952 0.2673 -0.18993 2011 1 17 55578 0.0938 0.2672 -0.19052 2011 1 18 55579 0.0923 0.2670 -0.19107 2011 1 19 55580 0.0908 0.2669 -0.19170 2011 1 20 55581 0.0893 0.2669 -0.19256 2011 1 21 55582 0.0879 0.2668 -0.19370 2011 1 22 55583 0.0864 0.2668 -0.19506 2011 1 23 55584 0.0850 0.2668 -0.19655 2011 1 24 55585 0.0835 0.2668 -0.19805 2011 1 25 55586 0.0821 0.2668 -0.19942 2011 1 26 55587 0.0806 0.2669 -0.20056 2011 1 27 55588 0.0792 0.2669 -0.20146 2011 1 28 55589 0.0778 0.2671 -0.20215 2011 1 29 55590 0.0764 0.2672 -0.20275 2011 1 30 55591 0.0749 0.2673 -0.20333 2011 1 31 55592 0.0735 0.2675 -0.20393 2011 2 1 55593 0.0722 0.2677 -0.20462 2011 2 2 55594 0.0708 0.2679 -0.20541 2011 2 3 55595 0.0694 0.2681 -0.20631 2011 2 4 55596 0.0680 0.2684 -0.20732 2011 2 5 55597 0.0667 0.2687 -0.20842 2011 2 6 55598 0.0653 0.2690 -0.20959 2011 2 7 55599 0.0640 0.2693 -0.21076 2011 2 8 55600 0.0627 0.2696 -0.21188 2011 2 9 55601 0.0613 0.2700 -0.21290 2011 2 10 55602 0.0600 0.2704 -0.21381 2011 2 11 55603 0.0588 0.2708 -0.21459 2011 2 12 55604 0.0575 0.2712 -0.21527 2011 2 13 55605 0.0562 0.2716 -0.21592 2011 2 14 55606 0.0550 0.2721 -0.21657 2011 2 15 55607 0.0537 0.2726 -0.21728 2011 2 16 55608 0.0525 0.2731 -0.21812 2011 2 17 55609 0.0513 0.2736 -0.21922 2011 2 18 55610 0.0501 0.2741 -0.22061 2011 2 19 55611 0.0489 0.2747 -0.22222 2011 2 20 55612 0.0477 0.2752 -0.22389 2011 2 21 55613 0.0466 0.2758 -0.22547 2011 2 22 55614 0.0454 0.2764 -0.22685 2011 2 23 55615 0.0443 0.2771 -0.22801 2011 2 24 55616 0.0432 0.2777 -0.22896 2011 2 25 55617 0.0421 0.2784 -0.22972 2011 2 26 55618 0.0411 0.2790 -0.23034 2011 2 27 55619 0.0400 0.2797 -0.23093 2011 2 28 55620 0.0390 0.2804 -0.23152 2011 3 1 55621 0.0379 0.2812 -0.23213 2011 3 2 55622 0.0369 0.2819 -0.23277 2011 3 3 55623 0.0359 0.2827 -0.23350 2011 3 4 55624 0.0350 0.2834 -0.23439 2011 3 5 55625 0.0340 0.2842 -0.23539 2011 3 6 55626 0.0331 0.2850 -0.23642 2011 3 7 55627 0.0322 0.2858 -0.23742 2011 3 8 55628 0.0313 0.2867 -0.23834 2011 3 9 55629 0.0304 0.2875 -0.23918 2011 3 10 55630 0.0295 0.2884 -0.23995 2011 3 11 55631 0.0287 0.2892 -0.24064 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) 55247 -64.43 0.11 -6.80 0.34 55248 -64.59 0.16 -6.85 0.34 55249 -64.94 0.16 -6.83 0.34 55250 -65.41 0.74 -6.82 0.34 55251 -65.78 0.18 -7.00 0.34 55252 -65.79 0.18 -7.39 0.34 55253 -65.38 0.18 -7.71 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55247 -0.231 0.044 -0.223 0.340 55248 -0.230 0.064 -0.237 0.340 55249 -0.216 0.064 -0.254 0.340 55250 -0.195 0.294 -0.288 0.340 55251 -0.156 0.072 -0.314 0.340 55252 -0.113 0.072 -0.284 0.340 55253 -0.113 0.072 -0.201 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.