********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 4 February 2010 Vol. XXIII No. 005 ______________________________________________________________________ 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 = +0.1 seconds beginning 12 November 2009 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 1 29 55225 0.01782 .00009 0.20185 .00009 0.092102 0.000015 10 1 30 55226 0.01636 .00009 0.20399 .00009 0.091002 0.000015 10 1 31 55227 0.01412 .00009 0.20624 .00009 0.089593 0.000014 10 2 1 55228 0.01148 .00009 0.20796 .00009 0.087877 0.000016 10 2 2 55229 0.00872 .00009 0.20920 .00010 0.085976 0.000015 10 2 3 55230 0.00598 .00009 0.21037 .00009 0.084117 0.000048 10 2 4 55231 0.00332 .00009 0.21180 .00010 0.082476 0.000057 _______________________________________________________________________ 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 = 0.0788 - 0.1282 cos A - 0.0152 sin A + 0.0518 cos C - 0.1145 sin C y = 0.3424 - 0.0158 cos A + 0.1149 sin A - 0.1145 cos C - 0.0518 sin C UT1-UTC = 0.0798 - 0.00089 (MJD - 55239) - (UT2-UT1) where A = 2*pi*(MJD-55231)/365.25 and C = 2*pi*(MJD-55231)/435. TAI-UTC(MJD 55232) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55231)**0.80 S t = 0.00025 (MJD-55231)**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 2 5 55232 0.0009 0.2129 0.08115 2010 2 6 55233 -0.0015 0.2143 0.08009 2010 2 7 55234 -0.0036 0.2157 0.07925 2010 2 8 55235 -0.0058 0.2172 0.07858 2010 2 9 55236 -0.0078 0.2186 0.07803 2010 2 10 55237 -0.0099 0.2201 0.07750 2010 2 11 55238 -0.0119 0.2216 0.07690 2010 2 12 55239 -0.0140 0.2231 0.07617 2010 2 13 55240 -0.0160 0.2246 0.07530 2010 2 14 55241 -0.0179 0.2261 0.07425 2010 2 15 55242 -0.0199 0.2276 0.07303 2010 2 16 55243 -0.0217 0.2292 0.07166 2010 2 17 55244 -0.0236 0.2308 0.07022 2010 2 18 55245 -0.0254 0.2324 0.06877 2010 2 19 55246 -0.0272 0.2340 0.06743 2010 2 20 55247 -0.0289 0.2357 0.06623 2010 2 21 55248 -0.0306 0.2374 0.06518 2010 2 22 55249 -0.0323 0.2391 0.06427 2010 2 23 55250 -0.0339 0.2408 0.06343 2010 2 24 55251 -0.0355 0.2426 0.06260 2010 2 25 55252 -0.0371 0.2443 0.06165 2010 2 26 55253 -0.0386 0.2461 0.06047 2010 2 27 55254 -0.0401 0.2480 0.05901 2010 2 28 55255 -0.0416 0.2498 0.05729 2010 3 1 55256 -0.0430 0.2517 0.05540 2010 3 2 55257 -0.0444 0.2535 0.05349 2010 3 3 55258 -0.0457 0.2555 0.05171 2010 3 4 55259 -0.0471 0.2574 0.05018 2010 3 5 55260 -0.0483 0.2593 0.04893 2010 3 6 55261 -0.0496 0.2613 0.04794 2010 3 7 55262 -0.0508 0.2633 0.04713 2010 3 8 55263 -0.0520 0.2653 0.04640 2010 3 9 55264 -0.0531 0.2673 0.04566 2010 3 10 55265 -0.0542 0.2693 0.04485 2010 3 11 55266 -0.0553 0.2714 0.04390 2010 3 12 55267 -0.0563 0.2734 0.04280 2010 3 13 55268 -0.0573 0.2755 0.04154 2010 3 14 55269 -0.0583 0.2776 0.04014 2010 3 15 55270 -0.0592 0.2797 0.03864 2010 3 16 55271 -0.0600 0.2818 0.03709 2010 3 17 55272 -0.0609 0.2840 0.03557 2010 3 18 55273 -0.0617 0.2861 0.03411 2010 3 19 55274 -0.0625 0.2883 0.03278 2010 3 20 55275 -0.0632 0.2904 0.03160 2010 3 21 55276 -0.0639 0.2926 0.03055 2010 3 22 55277 -0.0645 0.2948 0.02960 2010 3 23 55278 -0.0651 0.2970 0.02867 2010 3 24 55279 -0.0657 0.2992 0.02766 2010 3 25 55280 -0.0662 0.3014 0.02647 2010 3 26 55281 -0.0667 0.3036 0.02504 2010 3 27 55282 -0.0672 0.3059 0.02334 2010 3 28 55283 -0.0676 0.3081 0.02143 2010 3 29 55284 -0.0679 0.3103 0.01944 2010 3 30 55285 -0.0683 0.3126 0.01751 2010 3 31 55286 -0.0686 0.3148 0.01578 2010 4 1 55287 -0.0688 0.3171 0.01432 2010 4 2 55288 -0.0690 0.3193 0.01314 2010 4 3 55289 -0.0692 0.3216 0.01217 2010 4 4 55290 -0.0694 0.3239 0.01135 2010 4 5 55291 -0.0695 0.3261 0.01057 2010 4 6 55292 -0.0695 0.3284 0.00978 2010 4 7 55293 -0.0695 0.3307 0.00890 2010 4 8 55294 -0.0695 0.3329 0.00791 2010 4 9 55295 -0.0695 0.3352 0.00680 2010 4 10 55296 -0.0694 0.3374 0.00555 2010 4 11 55297 -0.0692 0.3397 0.00421 2010 4 12 55298 -0.0691 0.3420 0.00281 2010 4 13 55299 -0.0689 0.3442 0.00142 2010 4 14 55300 -0.0686 0.3465 0.00009 2010 4 15 55301 -0.0683 0.3487 -0.00113 2010 4 16 55302 -0.0680 0.3509 -0.00219 2010 4 17 55303 -0.0676 0.3532 -0.00311 2010 4 18 55304 -0.0672 0.3554 -0.00390 2010 4 19 55305 -0.0668 0.3576 -0.00464 2010 4 20 55306 -0.0663 0.3598 -0.00542 2010 4 21 55307 -0.0658 0.3621 -0.00633 2010 4 22 55308 -0.0653 0.3643 -0.00744 2010 4 23 55309 -0.0647 0.3664 -0.00879 2010 4 24 55310 -0.0641 0.3686 -0.01034 2010 4 25 55311 -0.0634 0.3708 -0.01202 2010 4 26 55312 -0.0627 0.3729 -0.01369 2010 4 27 55313 -0.0620 0.3751 -0.01524 2010 4 28 55314 -0.0612 0.3772 -0.01656 2010 4 29 55315 -0.0604 0.3794 -0.01763 2010 4 30 55316 -0.0596 0.3815 -0.01845 2010 5 1 55317 -0.0587 0.3836 -0.01910 2010 5 2 55318 -0.0578 0.3856 -0.01966 2010 5 3 55319 -0.0569 0.3877 -0.02022 2010 5 4 55320 -0.0559 0.3898 -0.02084 2010 5 5 55321 -0.0549 0.3918 -0.02155 2010 5 6 55322 -0.0539 0.3938 -0.02239 2010 5 7 55323 -0.0528 0.3958 -0.02334 2010 5 8 55324 -0.0517 0.3978 -0.02439 2010 5 9 55325 -0.0506 0.3998 -0.02550 2010 5 10 55326 -0.0494 0.4017 -0.02662 2010 5 11 55327 -0.0483 0.4037 -0.02770 2010 5 12 55328 -0.0470 0.4056 -0.02867 2010 5 13 55329 -0.0458 0.4075 -0.02950 2010 5 14 55330 -0.0445 0.4094 -0.03017 2010 5 15 55331 -0.0432 0.4112 -0.03070 2010 5 16 55332 -0.0418 0.4131 -0.03116 2010 5 17 55333 -0.0405 0.4149 -0.03162 2010 5 18 55334 -0.0391 0.4167 -0.03219 2010 5 19 55335 -0.0377 0.4184 -0.03293 2010 5 20 55336 -0.0362 0.4202 -0.03389 2010 5 21 55337 -0.0347 0.4219 -0.03504 2010 5 22 55338 -0.0332 0.4236 -0.03630 2010 5 23 55339 -0.0317 0.4253 -0.03758 2010 5 24 55340 -0.0301 0.4269 -0.03872 2010 5 25 55341 -0.0285 0.4285 -0.03967 2010 5 26 55342 -0.0269 0.4301 -0.04037 2010 5 27 55343 -0.0253 0.4317 -0.04083 2010 5 28 55344 -0.0237 0.4333 -0.04109 2010 5 29 55345 -0.0220 0.4348 -0.04124 2010 5 30 55346 -0.0203 0.4363 -0.04135 2010 5 31 55347 -0.0186 0.4378 -0.04149 2010 6 1 55348 -0.0168 0.4392 -0.04171 2010 6 2 55349 -0.0151 0.4406 -0.04204 2010 6 3 55350 -0.0133 0.4420 -0.04247 2010 6 4 55351 -0.0115 0.4434 -0.04300 2010 6 5 55352 -0.0097 0.4447 -0.04359 2010 6 6 55353 -0.0078 0.4460 -0.04419 2010 6 7 55354 -0.0060 0.4473 -0.04475 2010 6 8 55355 -0.0041 0.4486 -0.04523 2010 6 9 55356 -0.0022 0.4498 -0.04559 2010 6 10 55357 -0.0003 0.4510 -0.04578 2010 6 11 55358 0.0017 0.4522 -0.04584 2010 6 12 55359 0.0036 0.4533 -0.04578 2010 6 13 55360 0.0055 0.4544 -0.04571 2010 6 14 55361 0.0075 0.4555 -0.04571 2010 6 15 55362 0.0095 0.4565 -0.04589 2010 6 16 55363 0.0115 0.4575 -0.04629 2010 6 17 55364 0.0135 0.4585 -0.04689 2010 6 18 55365 0.0155 0.4594 -0.04762 2010 6 19 55366 0.0176 0.4604 -0.04836 2010 6 20 55367 0.0196 0.4612 -0.04900 2010 6 21 55368 0.0217 0.4621 -0.04946 2010 6 22 55369 0.0237 0.4629 -0.04967 2010 6 23 55370 0.0258 0.4637 -0.04966 2010 6 24 55371 0.0279 0.4645 -0.04944 2010 6 25 55372 0.0300 0.4652 -0.04910 2010 6 26 55373 0.0321 0.4659 -0.04871 2010 6 27 55374 0.0342 0.4666 -0.04834 2010 6 28 55375 0.0363 0.4672 -0.04805 2010 6 29 55376 0.0384 0.4678 -0.04788 2010 6 30 55377 0.0405 0.4683 -0.04783 2010 7 1 55378 0.0426 0.4689 -0.04789 2010 7 2 55379 0.0448 0.4694 -0.04803 2010 7 3 55380 0.0469 0.4698 -0.04820 2010 7 4 55381 0.0490 0.4703 -0.04836 2010 7 5 55382 0.0512 0.4707 -0.04846 2010 7 6 55383 0.0533 0.4710 -0.04847 2010 7 7 55384 0.0555 0.4714 -0.04834 2010 7 8 55385 0.0576 0.4717 -0.04808 2010 7 9 55386 0.0597 0.4720 -0.04772 2010 7 10 55387 0.0619 0.4722 -0.04732 2010 7 11 55388 0.0640 0.4724 -0.04698 2010 7 12 55389 0.0662 0.4726 -0.04681 2010 7 13 55390 0.0683 0.4727 -0.04688 2010 7 14 55391 0.0704 0.4728 -0.04720 2010 7 15 55392 0.0725 0.4729 -0.04772 2010 7 16 55393 0.0747 0.4729 -0.04830 2010 7 17 55394 0.0768 0.4729 -0.04882 2010 7 18 55395 0.0789 0.4729 -0.04915 2010 7 19 55396 0.0810 0.4728 -0.04924 2010 7 20 55397 0.0831 0.4728 -0.04908 2010 7 21 55398 0.0852 0.4726 -0.04873 2010 7 22 55399 0.0873 0.4725 -0.04824 2010 7 23 55400 0.0894 0.4723 -0.04769 2010 7 24 55401 0.0914 0.4721 -0.04717 2010 7 25 55402 0.0935 0.4718 -0.04672 2010 7 26 55403 0.0955 0.4716 -0.04640 2010 7 27 55404 0.0976 0.4712 -0.04620 2010 7 28 55405 0.0996 0.4709 -0.04613 2010 7 29 55406 0.1016 0.4705 -0.04616 2010 7 30 55407 0.1036 0.4701 -0.04624 2010 7 31 55408 0.1056 0.4697 -0.04631 2010 8 1 55409 0.1076 0.4692 -0.04634 2010 8 2 55410 0.1096 0.4687 -0.04627 2010 8 3 55411 0.1115 0.4682 -0.04608 2010 8 4 55412 0.1135 0.4676 -0.04575 2010 8 5 55413 0.1154 0.4671 -0.04530 2010 8 6 55414 0.1173 0.4665 -0.04477 2010 8 7 55415 0.1192 0.4658 -0.04425 2010 8 8 55416 0.1211 0.4651 -0.04383 2010 8 9 55417 0.1229 0.4644 -0.04363 2010 8 10 55418 0.1248 0.4637 -0.04369 2010 8 11 55419 0.1266 0.4630 -0.04400 2010 8 12 55420 0.1284 0.4622 -0.04446 2010 8 13 55421 0.1302 0.4614 -0.04496 2010 8 14 55422 0.1320 0.4605 -0.04536 2010 8 15 55423 0.1337 0.4597 -0.04558 2010 8 16 55424 0.1354 0.4588 -0.04561 2010 8 17 55425 0.1372 0.4578 -0.04548 2010 8 18 55426 0.1388 0.4569 -0.04525 2010 8 19 55427 0.1405 0.4559 -0.04501 2010 8 20 55428 0.1422 0.4549 -0.04482 2010 8 21 55429 0.1438 0.4539 -0.04473 2010 8 22 55430 0.1454 0.4529 -0.04478 2010 8 23 55431 0.1470 0.4518 -0.04500 2010 8 24 55432 0.1485 0.4507 -0.04536 2010 8 25 55433 0.1501 0.4496 -0.04587 2010 8 26 55434 0.1516 0.4485 -0.04647 2010 8 27 55435 0.1531 0.4473 -0.04711 2010 8 28 55436 0.1545 0.4461 -0.04773 2010 8 29 55437 0.1560 0.4449 -0.04829 2010 8 30 55438 0.1574 0.4437 -0.04876 2010 8 31 55439 0.1588 0.4425 -0.04912 2010 9 1 55440 0.1601 0.4412 -0.04937 2010 9 2 55441 0.1615 0.4399 -0.04955 2010 9 3 55442 0.1628 0.4386 -0.04973 2010 9 4 55443 0.1641 0.4373 -0.04998 2010 9 5 55444 0.1653 0.4359 -0.05043 2010 9 6 55445 0.1665 0.4346 -0.05116 2010 9 7 55446 0.1678 0.4332 -0.05221 2010 9 8 55447 0.1689 0.4318 -0.05353 2010 9 9 55448 0.1701 0.4303 -0.05495 2010 9 10 55449 0.1712 0.4289 -0.05628 2010 9 11 55450 0.1723 0.4275 -0.05739 2010 9 12 55451 0.1734 0.4260 -0.05821 2010 9 13 55452 0.1744 0.4245 -0.05875 2010 9 14 55453 0.1754 0.4230 -0.05908 2010 9 15 55454 0.1764 0.4215 -0.05931 2010 9 16 55455 0.1773 0.4200 -0.05955 2010 9 17 55456 0.1782 0.4184 -0.05983 2010 9 18 55457 0.1791 0.4169 -0.06026 2010 9 19 55458 0.1800 0.4153 -0.06082 2010 9 20 55459 0.1808 0.4137 -0.06152 2010 9 21 55460 0.1816 0.4121 -0.06238 2010 9 22 55461 0.1824 0.4105 -0.06334 2010 9 23 55462 0.1831 0.4089 -0.06435 2010 9 24 55463 0.1838 0.4073 -0.06535 2010 9 25 55464 0.1845 0.4056 -0.06625 2010 9 26 55465 0.1851 0.4040 -0.06705 2010 9 27 55466 0.1858 0.4023 -0.06775 2010 9 28 55467 0.1864 0.4007 -0.06836 2010 9 29 55468 0.1869 0.3990 -0.06889 2010 9 30 55469 0.1874 0.3973 -0.06937 2010 10 1 55470 0.1879 0.3956 -0.06992 2010 10 2 55471 0.1884 0.3940 -0.07062 2010 10 3 55472 0.1888 0.3923 -0.07159 2010 10 4 55473 0.1892 0.3905 -0.07296 2010 10 5 55474 0.1896 0.3888 -0.07465 2010 10 6 55475 0.1899 0.3871 -0.07659 2010 10 7 55476 0.1902 0.3854 -0.07861 2010 10 8 55477 0.1905 0.3837 -0.08054 2010 10 9 55478 0.1908 0.3819 -0.08225 2010 10 10 55479 0.1910 0.3802 -0.08371 2010 10 11 55480 0.1912 0.3785 -0.08494 2010 10 12 55481 0.1913 0.3767 -0.08599 2010 10 13 55482 0.1914 0.3750 -0.08697 2010 10 14 55483 0.1915 0.3733 -0.08802 2010 10 15 55484 0.1916 0.3715 -0.08919 2010 10 16 55485 0.1916 0.3698 -0.09048 2010 10 17 55486 0.1916 0.3681 -0.09185 2010 10 18 55487 0.1916 0.3663 -0.09333 2010 10 19 55488 0.1915 0.3646 -0.09488 2010 10 20 55489 0.1914 0.3629 -0.09646 2010 10 21 55490 0.1913 0.3611 -0.09803 2010 10 22 55491 0.1912 0.3594 -0.09952 2010 10 23 55492 0.1910 0.3577 -0.10095 2010 10 24 55493 0.1908 0.3559 -0.10225 2010 10 25 55494 0.1905 0.3542 -0.10343 2010 10 26 55495 0.1903 0.3525 -0.10450 2010 10 27 55496 0.1900 0.3508 -0.10556 2010 10 28 55497 0.1897 0.3491 -0.10663 2010 10 29 55498 0.1893 0.3474 -0.10778 2010 10 30 55499 0.1889 0.3457 -0.10909 2010 10 31 55500 0.1885 0.3440 -0.11064 2010 11 1 55501 0.1881 0.3423 -0.11244 2010 11 2 55502 0.1876 0.3407 -0.11446 2010 11 3 55503 0.1871 0.3390 -0.11657 2010 11 4 55504 0.1866 0.3374 -0.11858 2010 11 5 55505 0.1860 0.3357 -0.12038 2010 11 6 55506 0.1854 0.3341 -0.12195 2010 11 7 55507 0.1848 0.3325 -0.12325 2010 11 8 55508 0.1842 0.3308 -0.12431 2010 11 9 55509 0.1836 0.3292 -0.12517 2010 11 10 55510 0.1829 0.3276 -0.12596 2010 11 11 55511 0.1822 0.3261 -0.12682 2010 11 12 55512 0.1814 0.3245 -0.12781 2010 11 13 55513 0.1807 0.3229 -0.12890 2010 11 14 55514 0.1799 0.3214 -0.13008 2010 11 15 55515 0.1791 0.3199 -0.13134 2010 11 16 55516 0.1782 0.3183 -0.13264 2010 11 17 55517 0.1774 0.3168 -0.13391 2010 11 18 55518 0.1765 0.3153 -0.13512 2010 11 19 55519 0.1756 0.3139 -0.13624 2010 11 20 55520 0.1747 0.3124 -0.13731 2010 11 21 55521 0.1737 0.3109 -0.13830 2010 11 22 55522 0.1728 0.3095 -0.13918 2010 11 23 55523 0.1718 0.3081 -0.14001 2010 11 24 55524 0.1707 0.3067 -0.14083 2010 11 25 55525 0.1697 0.3053 -0.14170 2010 11 26 55526 0.1687 0.3039 -0.14270 2010 11 27 55527 0.1676 0.3026 -0.14391 2010 11 28 55528 0.1665 0.3013 -0.14535 2010 11 29 55529 0.1654 0.2999 -0.14695 2010 11 30 55530 0.1642 0.2986 -0.14862 2010 12 1 55531 0.1631 0.2974 -0.15024 2010 12 2 55532 0.1619 0.2961 -0.15170 2010 12 3 55533 0.1607 0.2948 -0.15293 2010 12 4 55534 0.1595 0.2936 -0.15393 2010 12 5 55535 0.1583 0.2924 -0.15474 2010 12 6 55536 0.1570 0.2912 -0.15541 2010 12 7 55537 0.1558 0.2901 -0.15598 2010 12 8 55538 0.1545 0.2889 -0.15653 2010 12 9 55539 0.1532 0.2878 -0.15715 2010 12 10 55540 0.1519 0.2867 -0.15789 2010 12 11 55541 0.1506 0.2856 -0.15875 2010 12 12 55542 0.1492 0.2845 -0.15965 2010 12 13 55543 0.1479 0.2835 -0.16057 2010 12 14 55544 0.1465 0.2825 -0.16147 2010 12 15 55545 0.1451 0.2815 -0.16236 2010 12 16 55546 0.1437 0.2805 -0.16322 2010 12 17 55547 0.1423 0.2796 -0.16395 2010 12 18 55548 0.1409 0.2786 -0.16453 2010 12 19 55549 0.1395 0.2777 -0.16496 2010 12 20 55550 0.1381 0.2768 -0.16528 2010 12 21 55551 0.1366 0.2760 -0.16549 2010 12 22 55552 0.1352 0.2751 -0.16566 2010 12 23 55553 0.1337 0.2743 -0.16594 2010 12 24 55554 0.1322 0.2735 -0.16648 2010 12 25 55555 0.1307 0.2727 -0.16730 2010 12 26 55556 0.1292 0.2720 -0.16831 2010 12 27 55557 0.1277 0.2712 -0.16940 2010 12 28 55558 0.1262 0.2705 -0.17047 2010 12 29 55559 0.1247 0.2699 -0.17141 2010 12 30 55560 0.1232 0.2692 -0.17218 2010 12 31 55561 0.1217 0.2686 -0.17275 2011 1 1 55562 0.1201 0.2680 -0.17312 2011 1 2 55563 0.1186 0.2674 -0.17336 2011 1 3 55564 0.1170 0.2668 -0.17360 2011 1 4 55565 0.1155 0.2663 -0.17387 2011 1 5 55566 0.1139 0.2658 -0.17421 2011 1 6 55567 0.1124 0.2653 -0.17462 2011 1 7 55568 0.1108 0.2648 -0.17509 2011 1 8 55569 0.1093 0.2644 -0.17564 2011 1 9 55570 0.1077 0.2640 -0.17625 2011 1 10 55571 0.1062 0.2636 -0.17690 2011 1 11 55572 0.1046 0.2632 -0.17756 2011 1 12 55573 0.1030 0.2629 -0.17818 2011 1 13 55574 0.1015 0.2626 -0.17871 2011 1 14 55575 0.0999 0.2623 -0.17912 2011 1 15 55576 0.0983 0.2620 -0.17943 2011 1 16 55577 0.0968 0.2617 -0.17966 2011 1 17 55578 0.0952 0.2615 -0.17986 2011 1 18 55579 0.0936 0.2613 -0.18011 2011 1 19 55580 0.0921 0.2612 -0.18046 2011 1 20 55581 0.0905 0.2610 -0.18101 2011 1 21 55582 0.0890 0.2609 -0.18186 2011 1 22 55583 0.0874 0.2608 -0.18295 2011 1 23 55584 0.0859 0.2607 -0.18423 2011 1 24 55585 0.0844 0.2607 -0.18556 2011 1 25 55586 0.0828 0.2606 -0.18673 2011 1 26 55587 0.0813 0.2606 -0.18762 2011 1 27 55588 0.0798 0.2607 -0.18819 2011 1 28 55589 0.0783 0.2607 -0.18848 2011 1 29 55590 0.0768 0.2608 -0.18858 2011 1 30 55591 0.0753 0.2609 -0.18855 2011 1 31 55592 0.0738 0.2610 -0.18849 2011 2 1 55593 0.0723 0.2611 -0.18848 2011 2 2 55594 0.0708 0.2613 -0.18854 2011 2 3 55595 0.0693 0.2614 -0.18872 2011 2 4 55596 0.0679 0.2616 -0.18908 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) 55212 -64.46 0.20 -5.28 0.34 55213 -64.27 0.20 -5.05 0.34 55214 -64.24 0.20 -5.00 0.34 55215 -64.38 0.74 -5.09 0.34 55216 -64.58 0.23 -5.20 0.34 55217 -64.68 0.23 -5.27 0.34 55218 -64.73 0.23 -5.41 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55212 -0.075 0.080 -0.288 0.340 55213 -0.074 0.080 -0.282 0.340 55214 -0.083 0.080 -0.278 0.340 55215 -0.099 0.294 -0.264 0.340 55216 -0.126 0.091 -0.255 0.340 55217 -0.150 0.091 -0.241 0.340 55218 -0.173 0.091 -0.256 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.