********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 21 January 2010 Vol. XXIII No. 003 ______________________________________________________________________ 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 ********************************************************************** * There will NOT be a leap second introduced * * in UTC on 30 June 2010. * ********************************************************************** ________________________________________________________________________ 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 15 55211 0.05915 .00009 0.19519 .00009 0.103312 0.000011 10 1 16 55212 0.05583 .00009 0.19554 .00009 0.102853 0.000007 10 1 17 55213 0.05241 .00009 0.19576 .00009 0.102205 0.000006 10 1 18 55214 0.04883 .00009 0.19595 .00009 0.101359 0.000005 10 1 19 55215 0.04500 .00009 0.19612 .00009 0.100401 0.000037 10 1 20 55216 0.04100 .00009 0.19636 .00009 0.099419 0.000048 10 1 21 55217 0.03703 .00009 0.19683 .00009 0.098385 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 = 0.0820 - 0.1197 cos A - 0.0457 sin A + 0.0732 cos C - 0.1018 sin C y = 0.3404 - 0.0425 cos A + 0.1071 sin A - 0.1018 cos C - 0.0732 sin C UT1-UTC = 0.0953 - 0.00089 (MJD - 55225) - (UT2-UT1) where A = 2*pi*(MJD-55217)/365.25 and C = 2*pi*(MJD-55217)/435. TAI-UTC(MJD 55218) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55217)**0.80 S t = 0.00025 (MJD-55217)**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 1 22 55218 0.0337 0.1971 0.09730 2010 1 23 55219 0.0304 0.1976 0.09627 2010 1 24 55220 0.0274 0.1982 0.09538 2010 1 25 55221 0.0246 0.1988 0.09467 2010 1 26 55222 0.0220 0.1996 0.09412 2010 1 27 55223 0.0195 0.2005 0.09364 2010 1 28 55224 0.0170 0.2014 0.09310 2010 1 29 55225 0.0146 0.2023 0.09238 2010 1 30 55226 0.0123 0.2033 0.09140 2010 1 31 55227 0.0100 0.2043 0.09011 2010 2 1 55228 0.0077 0.2054 0.08858 2010 2 2 55229 0.0054 0.2065 0.08692 2010 2 3 55230 0.0032 0.2076 0.08535 2010 2 4 55231 0.0009 0.2088 0.08398 2010 2 5 55232 -0.0013 0.2100 0.08289 2010 2 6 55233 -0.0034 0.2113 0.08207 2010 2 7 55234 -0.0056 0.2126 0.08146 2010 2 8 55235 -0.0077 0.2139 0.08099 2010 2 9 55236 -0.0098 0.2152 0.08056 2010 2 10 55237 -0.0118 0.2166 0.08011 2010 2 11 55238 -0.0138 0.2180 0.07959 2010 2 12 55239 -0.0158 0.2194 0.07896 2010 2 13 55240 -0.0178 0.2209 0.07819 2010 2 14 55241 -0.0198 0.2224 0.07726 2010 2 15 55242 -0.0217 0.2239 0.07620 2010 2 16 55243 -0.0236 0.2254 0.07502 2010 2 17 55244 -0.0254 0.2270 0.07378 2010 2 18 55245 -0.0273 0.2286 0.07253 2010 2 19 55246 -0.0291 0.2303 0.07134 2010 2 20 55247 -0.0308 0.2319 0.07024 2010 2 21 55248 -0.0325 0.2336 0.06926 2010 2 22 55249 -0.0343 0.2354 0.06841 2010 2 23 55250 -0.0359 0.2371 0.06764 2010 2 24 55251 -0.0376 0.2389 0.06686 2010 2 25 55252 -0.0392 0.2407 0.06596 2010 2 26 55253 -0.0407 0.2425 0.06482 2010 2 27 55254 -0.0423 0.2443 0.06339 2010 2 28 55255 -0.0438 0.2462 0.06168 2010 3 1 55256 -0.0452 0.2481 0.05980 2010 3 2 55257 -0.0467 0.2500 0.05790 2010 3 3 55258 -0.0481 0.2519 0.05612 2010 3 4 55259 -0.0494 0.2539 0.05459 2010 3 5 55260 -0.0507 0.2558 0.05334 2010 3 6 55261 -0.0520 0.2578 0.05235 2010 3 7 55262 -0.0533 0.2598 0.05153 2010 3 8 55263 -0.0545 0.2619 0.05082 2010 3 9 55264 -0.0557 0.2639 0.05013 2010 3 10 55265 -0.0568 0.2660 0.04940 2010 3 11 55266 -0.0579 0.2680 0.04857 2010 3 12 55267 -0.0590 0.2701 0.04762 2010 3 13 55268 -0.0600 0.2723 0.04651 2010 3 14 55269 -0.0610 0.2744 0.04527 2010 3 15 55270 -0.0620 0.2765 0.04393 2010 3 16 55271 -0.0629 0.2787 0.04255 2010 3 17 55272 -0.0638 0.2809 0.04118 2010 3 18 55273 -0.0646 0.2830 0.03988 2010 3 19 55274 -0.0654 0.2852 0.03869 2010 3 20 55275 -0.0661 0.2875 0.03764 2010 3 21 55276 -0.0669 0.2897 0.03673 2010 3 22 55277 -0.0675 0.2919 0.03591 2010 3 23 55278 -0.0682 0.2941 0.03512 2010 3 24 55279 -0.0688 0.2964 0.03425 2010 3 25 55280 -0.0694 0.2987 0.03321 2010 3 26 55281 -0.0699 0.3009 0.03191 2010 3 27 55282 -0.0704 0.3032 0.03033 2010 3 28 55283 -0.0708 0.3055 0.02854 2010 3 29 55284 -0.0712 0.3078 0.02663 2010 3 30 55285 -0.0716 0.3101 0.02477 2010 3 31 55286 -0.0719 0.3124 0.02309 2010 4 1 55287 -0.0722 0.3147 0.02167 2010 4 2 55288 -0.0724 0.3170 0.02052 2010 4 3 55289 -0.0726 0.3193 0.01958 2010 4 4 55290 -0.0728 0.3216 0.01877 2010 4 5 55291 -0.0729 0.3239 0.01801 2010 4 6 55292 -0.0730 0.3262 0.01722 2010 4 7 55293 -0.0730 0.3285 0.01635 2010 4 8 55294 -0.0731 0.3308 0.01536 2010 4 9 55295 -0.0730 0.3332 0.01424 2010 4 10 55296 -0.0729 0.3355 0.01298 2010 4 11 55297 -0.0728 0.3378 0.01162 2010 4 12 55298 -0.0727 0.3401 0.01020 2010 4 13 55299 -0.0725 0.3424 0.00877 2010 4 14 55300 -0.0723 0.3447 0.00740 2010 4 15 55301 -0.0720 0.3470 0.00614 2010 4 16 55302 -0.0717 0.3493 0.00501 2010 4 17 55303 -0.0713 0.3516 0.00403 2010 4 18 55304 -0.0710 0.3539 0.00317 2010 4 19 55305 -0.0705 0.3562 0.00237 2010 4 20 55306 -0.0701 0.3584 0.00153 2010 4 21 55307 -0.0696 0.3607 0.00055 2010 4 22 55308 -0.0690 0.3630 -0.00063 2010 4 23 55309 -0.0685 0.3652 -0.00205 2010 4 24 55310 -0.0679 0.3674 -0.00367 2010 4 25 55311 -0.0672 0.3697 -0.00543 2010 4 26 55312 -0.0665 0.3719 -0.00719 2010 4 27 55313 -0.0658 0.3741 -0.00883 2010 4 28 55314 -0.0651 0.3763 -0.01024 2010 4 29 55315 -0.0643 0.3785 -0.01140 2010 4 30 55316 -0.0634 0.3806 -0.01232 2010 5 1 55317 -0.0626 0.3828 -0.01307 2010 5 2 55318 -0.0617 0.3850 -0.01374 2010 5 3 55319 -0.0608 0.3871 -0.01440 2010 5 4 55320 -0.0598 0.3892 -0.01511 2010 5 5 55321 -0.0588 0.3913 -0.01592 2010 5 6 55322 -0.0578 0.3934 -0.01685 2010 5 7 55323 -0.0567 0.3954 -0.01789 2010 5 8 55324 -0.0556 0.3975 -0.01903 2010 5 9 55325 -0.0544 0.3995 -0.02022 2010 5 10 55326 -0.0533 0.4015 -0.02137 2010 5 11 55327 -0.0521 0.4035 -0.02247 2010 5 12 55328 -0.0509 0.4055 -0.02347 2010 5 13 55329 -0.0496 0.4075 -0.02432 2010 5 14 55330 -0.0483 0.4094 -0.02501 2010 5 15 55331 -0.0470 0.4113 -0.02556 2010 5 16 55332 -0.0456 0.4132 -0.02602 2010 5 17 55333 -0.0443 0.4151 -0.02649 2010 5 18 55334 -0.0428 0.4169 -0.02705 2010 5 19 55335 -0.0414 0.4188 -0.02779 2010 5 20 55336 -0.0399 0.4206 -0.02874 2010 5 21 55337 -0.0384 0.4224 -0.02987 2010 5 22 55338 -0.0369 0.4241 -0.03111 2010 5 23 55339 -0.0354 0.4259 -0.03236 2010 5 24 55340 -0.0338 0.4276 -0.03351 2010 5 25 55341 -0.0322 0.4293 -0.03445 2010 5 26 55342 -0.0306 0.4309 -0.03516 2010 5 27 55343 -0.0289 0.4326 -0.03562 2010 5 28 55344 -0.0273 0.4342 -0.03589 2010 5 29 55345 -0.0256 0.4358 -0.03603 2010 5 30 55346 -0.0239 0.4374 -0.03614 2010 5 31 55347 -0.0221 0.4389 -0.03629 2010 6 1 55348 -0.0203 0.4404 -0.03652 2010 6 2 55349 -0.0186 0.4419 -0.03686 2010 6 3 55350 -0.0168 0.4433 -0.03731 2010 6 4 55351 -0.0149 0.4448 -0.03785 2010 6 5 55352 -0.0131 0.4462 -0.03846 2010 6 6 55353 -0.0112 0.4475 -0.03909 2010 6 7 55354 -0.0093 0.4489 -0.03968 2010 6 8 55355 -0.0074 0.4502 -0.04019 2010 6 9 55356 -0.0055 0.4515 -0.04057 2010 6 10 55357 -0.0036 0.4527 -0.04081 2010 6 11 55358 -0.0016 0.4539 -0.04089 2010 6 12 55359 0.0004 0.4551 -0.04088 2010 6 13 55360 0.0024 0.4563 -0.04084 2010 6 14 55361 0.0044 0.4574 -0.04089 2010 6 15 55362 0.0064 0.4585 -0.04111 2010 6 16 55363 0.0084 0.4596 -0.04155 2010 6 17 55364 0.0104 0.4606 -0.04220 2010 6 18 55365 0.0125 0.4616 -0.04297 2010 6 19 55366 0.0146 0.4626 -0.04375 2010 6 20 55367 0.0167 0.4636 -0.04443 2010 6 21 55368 0.0187 0.4645 -0.04493 2010 6 22 55369 0.0208 0.4654 -0.04518 2010 6 23 55370 0.0230 0.4662 -0.04521 2010 6 24 55371 0.0251 0.4670 -0.04503 2010 6 25 55372 0.0272 0.4678 -0.04473 2010 6 26 55373 0.0294 0.4685 -0.04438 2010 6 27 55374 0.0315 0.4693 -0.04406 2010 6 28 55375 0.0336 0.4699 -0.04381 2010 6 29 55376 0.0358 0.4706 -0.04368 2010 6 30 55377 0.0380 0.4712 -0.04368 2010 7 1 55378 0.0401 0.4718 -0.04378 2010 7 2 55379 0.0423 0.4723 -0.04395 2010 7 3 55380 0.0445 0.4729 -0.04417 2010 7 4 55381 0.0467 0.4733 -0.04436 2010 7 5 55382 0.0489 0.4738 -0.04450 2010 7 6 55383 0.0510 0.4742 -0.04453 2010 7 7 55384 0.0532 0.4746 -0.04443 2010 7 8 55385 0.0554 0.4749 -0.04419 2010 7 9 55386 0.0576 0.4753 -0.04385 2010 7 10 55387 0.0598 0.4755 -0.04346 2010 7 11 55388 0.0620 0.4758 -0.04314 2010 7 12 55389 0.0642 0.4760 -0.04297 2010 7 13 55390 0.0664 0.4762 -0.04305 2010 7 14 55391 0.0685 0.4763 -0.04337 2010 7 15 55392 0.0707 0.4764 -0.04388 2010 7 16 55393 0.0729 0.4765 -0.04445 2010 7 17 55394 0.0751 0.4766 -0.04494 2010 7 18 55395 0.0772 0.4766 -0.04524 2010 7 19 55396 0.0794 0.4766 -0.04529 2010 7 20 55397 0.0816 0.4765 -0.04508 2010 7 21 55398 0.0837 0.4764 -0.04466 2010 7 22 55399 0.0858 0.4763 -0.04408 2010 7 23 55400 0.0880 0.4762 -0.04344 2010 7 24 55401 0.0901 0.4760 -0.04279 2010 7 25 55402 0.0922 0.4758 -0.04220 2010 7 26 55403 0.0943 0.4755 -0.04171 2010 7 27 55404 0.0964 0.4752 -0.04133 2010 7 28 55405 0.0985 0.4749 -0.04107 2010 7 29 55406 0.1006 0.4746 -0.04091 2010 7 30 55407 0.1026 0.4742 -0.04083 2010 7 31 55408 0.1047 0.4738 -0.04079 2010 8 1 55409 0.1067 0.4734 -0.04076 2010 8 2 55410 0.1088 0.4729 -0.04071 2010 8 3 55411 0.1108 0.4724 -0.04061 2010 8 4 55412 0.1128 0.4719 -0.04045 2010 8 5 55413 0.1148 0.4713 -0.04023 2010 8 6 55414 0.1167 0.4707 -0.03999 2010 8 7 55415 0.1187 0.4701 -0.03981 2010 8 8 55416 0.1206 0.4694 -0.03979 2010 8 9 55417 0.1226 0.4688 -0.04002 2010 8 10 55418 0.1245 0.4681 -0.04053 2010 8 11 55419 0.1263 0.4673 -0.04130 2010 8 12 55420 0.1282 0.4666 -0.04223 2010 8 13 55421 0.1301 0.4658 -0.04314 2010 8 14 55422 0.1319 0.4649 -0.04391 2010 8 15 55423 0.1337 0.4641 -0.04442 2010 8 16 55424 0.1355 0.4632 -0.04465 2010 8 17 55425 0.1373 0.4623 -0.04464 2010 8 18 55426 0.1390 0.4614 -0.04446 2010 8 19 55427 0.1408 0.4604 -0.04421 2010 8 20 55428 0.1425 0.4594 -0.04396 2010 8 21 55429 0.1442 0.4584 -0.04378 2010 8 22 55430 0.1458 0.4574 -0.04373 2010 8 23 55431 0.1475 0.4563 -0.04384 2010 8 24 55432 0.1491 0.4552 -0.04410 2010 8 25 55433 0.1507 0.4541 -0.04450 2010 8 26 55434 0.1523 0.4530 -0.04498 2010 8 27 55435 0.1538 0.4518 -0.04549 2010 8 28 55436 0.1554 0.4507 -0.04597 2010 8 29 55437 0.1569 0.4494 -0.04636 2010 8 30 55438 0.1583 0.4482 -0.04666 2010 8 31 55439 0.1598 0.4470 -0.04687 2010 9 1 55440 0.1612 0.4457 -0.04698 2010 9 2 55441 0.1626 0.4444 -0.04700 2010 9 3 55442 0.1640 0.4431 -0.04704 2010 9 4 55443 0.1653 0.4418 -0.04718 2010 9 5 55444 0.1667 0.4404 -0.04757 2010 9 6 55445 0.1680 0.4390 -0.04834 2010 9 7 55446 0.1692 0.4376 -0.04949 2010 9 8 55447 0.1705 0.4362 -0.05096 2010 9 9 55448 0.1717 0.4348 -0.05257 2010 9 10 55449 0.1729 0.4333 -0.05416 2010 9 11 55450 0.1740 0.4319 -0.05557 2010 9 12 55451 0.1751 0.4304 -0.05672 2010 9 13 55452 0.1762 0.4289 -0.05764 2010 9 14 55453 0.1773 0.4274 -0.05832 2010 9 15 55454 0.1783 0.4259 -0.05889 2010 9 16 55455 0.1794 0.4243 -0.05950 2010 9 17 55456 0.1803 0.4227 -0.06020 2010 9 18 55457 0.1813 0.4212 -0.06101 2010 9 19 55458 0.1822 0.4196 -0.06191 2010 9 20 55459 0.1831 0.4180 -0.06294 2010 9 21 55460 0.1840 0.4164 -0.06409 2010 9 22 55461 0.1848 0.4147 -0.06531 2010 9 23 55462 0.1856 0.4131 -0.06657 2010 9 24 55463 0.1864 0.4114 -0.06780 2010 9 25 55464 0.1871 0.4098 -0.06900 2010 9 26 55465 0.1878 0.4081 -0.07010 2010 9 27 55466 0.1885 0.4064 -0.07109 2010 9 28 55467 0.1891 0.4047 -0.07197 2010 9 29 55468 0.1897 0.4030 -0.07279 2010 9 30 55469 0.1903 0.4013 -0.07360 2010 10 1 55470 0.1909 0.3996 -0.07444 2010 10 2 55471 0.1914 0.3978 -0.07541 2010 10 3 55472 0.1919 0.3961 -0.07662 2010 10 4 55473 0.1923 0.3944 -0.07813 2010 10 5 55474 0.1928 0.3926 -0.07994 2010 10 6 55475 0.1931 0.3909 -0.08194 2010 10 7 55476 0.1935 0.3891 -0.08393 2010 10 8 55477 0.1938 0.3873 -0.08577 2010 10 9 55478 0.1941 0.3856 -0.08740 2010 10 10 55479 0.1944 0.3838 -0.08874 2010 10 11 55480 0.1946 0.3820 -0.08978 2010 10 12 55481 0.1948 0.3802 -0.09059 2010 10 13 55482 0.1950 0.3785 -0.09128 2010 10 14 55483 0.1952 0.3767 -0.09201 2010 10 15 55484 0.1953 0.3749 -0.09286 2010 10 16 55485 0.1954 0.3731 -0.09382 2010 10 17 55486 0.1954 0.3713 -0.09488 2010 10 18 55487 0.1954 0.3695 -0.09606 2010 10 19 55488 0.1954 0.3677 -0.09733 2010 10 20 55489 0.1954 0.3660 -0.09861 2010 10 21 55490 0.1953 0.3642 -0.09988 2010 10 22 55491 0.1952 0.3624 -0.10110 2010 10 23 55492 0.1951 0.3606 -0.10229 2010 10 24 55493 0.1949 0.3588 -0.10342 2010 10 25 55494 0.1947 0.3571 -0.10443 2010 10 26 55495 0.1945 0.3553 -0.10537 2010 10 27 55496 0.1942 0.3535 -0.10624 2010 10 28 55497 0.1939 0.3518 -0.10711 2010 10 29 55498 0.1936 0.3500 -0.10807 2010 10 30 55499 0.1933 0.3483 -0.10922 2010 10 31 55500 0.1929 0.3465 -0.11062 2010 11 1 55501 0.1925 0.3448 -0.11226 2010 11 2 55502 0.1921 0.3430 -0.11406 2010 11 3 55503 0.1916 0.3413 -0.11593 2010 11 4 55504 0.1911 0.3396 -0.11773 2010 11 5 55505 0.1906 0.3379 -0.11933 2010 11 6 55506 0.1901 0.3362 -0.12069 2010 11 7 55507 0.1895 0.3345 -0.12183 2010 11 8 55508 0.1889 0.3328 -0.12275 2010 11 9 55509 0.1883 0.3312 -0.12352 2010 11 10 55510 0.1876 0.3295 -0.12422 2010 11 11 55511 0.1869 0.3279 -0.12496 2010 11 12 55512 0.1862 0.3262 -0.12581 2010 11 13 55513 0.1855 0.3246 -0.12679 2010 11 14 55514 0.1848 0.3230 -0.12783 2010 11 15 55515 0.1840 0.3214 -0.12891 2010 11 16 55516 0.1832 0.3198 -0.13001 2010 11 17 55517 0.1823 0.3182 -0.13115 2010 11 18 55518 0.1815 0.3166 -0.13228 2010 11 19 55519 0.1806 0.3151 -0.13330 2010 11 20 55520 0.1797 0.3136 -0.13418 2010 11 21 55521 0.1788 0.3120 -0.13490 2010 11 22 55522 0.1778 0.3105 -0.13547 2010 11 23 55523 0.1768 0.3090 -0.13588 2010 11 24 55524 0.1758 0.3076 -0.13619 2010 11 25 55525 0.1748 0.3061 -0.13654 2010 11 26 55526 0.1738 0.3047 -0.13710 2010 11 27 55527 0.1727 0.3032 -0.13792 2010 11 28 55528 0.1717 0.3018 -0.13896 2010 11 29 55529 0.1705 0.3004 -0.14016 2010 11 30 55530 0.1694 0.2991 -0.14144 2010 12 1 55531 0.1683 0.2977 -0.14269 2010 12 2 55532 0.1671 0.2964 -0.14383 2010 12 3 55533 0.1659 0.2951 -0.14479 2010 12 4 55534 0.1647 0.2938 -0.14552 2010 12 5 55535 0.1635 0.2925 -0.14605 2010 12 6 55536 0.1623 0.2912 -0.14651 2010 12 7 55537 0.1610 0.2900 -0.14694 2010 12 8 55538 0.1598 0.2888 -0.14738 2010 12 9 55539 0.1585 0.2876 -0.14787 2010 12 10 55540 0.1572 0.2864 -0.14841 2010 12 11 55541 0.1559 0.2852 -0.14903 2010 12 12 55542 0.1545 0.2841 -0.14972 2010 12 13 55543 0.1532 0.2830 -0.15049 2010 12 14 55544 0.1518 0.2819 -0.15128 2010 12 15 55545 0.1504 0.2808 -0.15207 2010 12 16 55546 0.1490 0.2797 -0.15277 2010 12 17 55547 0.1476 0.2787 -0.15335 2010 12 18 55548 0.1462 0.2777 -0.15383 2010 12 19 55549 0.1448 0.2767 -0.15420 2010 12 20 55550 0.1433 0.2757 -0.15448 2010 12 21 55551 0.1419 0.2748 -0.15475 2010 12 22 55552 0.1404 0.2739 -0.15504 2010 12 23 55553 0.1389 0.2730 -0.15547 2010 12 24 55554 0.1375 0.2721 -0.15615 2010 12 25 55555 0.1360 0.2712 -0.15705 2010 12 26 55556 0.1345 0.2704 -0.15818 2010 12 27 55557 0.1329 0.2696 -0.15944 2010 12 28 55558 0.1314 0.2688 -0.16062 2010 12 29 55559 0.1299 0.2681 -0.16159 2010 12 30 55560 0.1284 0.2674 -0.16228 2010 12 31 55561 0.1268 0.2666 -0.16268 2011 1 1 55562 0.1253 0.2660 -0.16285 2011 1 2 55563 0.1237 0.2653 -0.16282 2011 1 3 55564 0.1221 0.2647 -0.16268 2011 1 4 55565 0.1206 0.2641 -0.16254 2011 1 5 55566 0.1190 0.2635 -0.16245 2011 1 6 55567 0.1174 0.2629 -0.16246 2011 1 7 55568 0.1159 0.2624 -0.16264 2011 1 8 55569 0.1143 0.2619 -0.16298 2011 1 9 55570 0.1127 0.2614 -0.16340 2011 1 10 55571 0.1111 0.2609 -0.16387 2011 1 11 55572 0.1095 0.2605 -0.16433 2011 1 12 55573 0.1079 0.2601 -0.16470 2011 1 13 55574 0.1063 0.2597 -0.16494 2011 1 14 55575 0.1047 0.2593 -0.16508 2011 1 15 55576 0.1031 0.2590 -0.16525 2011 1 16 55577 0.1015 0.2587 -0.16540 2011 1 17 55578 0.0999 0.2584 -0.16556 2011 1 18 55579 0.0984 0.2581 -0.16580 2011 1 19 55580 0.0968 0.2579 -0.16617 2011 1 20 55581 0.0952 0.2576 -0.16677 2011 1 21 55582 0.0936 0.2575 -0.16761 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) 55196 -65.10 0.29 -5.20 0.13 55197 -64.69 0.29 -5.37 0.13 55198 -64.36 0.28 -5.38 0.21 55199 -64.32 0.14 -5.34 0.34 55200 -64.47 0.14 -5.39 0.34 55201 -64.60 0.14 -5.51 0.34 55202 -64.64 0.14 -5.54 0.34 55203 -64.71 0.14 -5.41 0.34 55204 -64.85 0.14 -5.27 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55196 -0.044 0.115 -0.269 0.130 55197 -0.053 0.115 -0.279 0.130 55198 -0.050 0.111 -0.295 0.210 55199 -0.041 0.056 -0.316 0.340 55200 -0.042 0.056 -0.293 0.340 55201 -0.068 0.056 -0.268 0.340 55202 -0.093 0.056 -0.285 0.340 55203 -0.104 0.056 -0.306 0.340 55204 -0.104 0.056 -0.309 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.