********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 16 September 2010 Vol. XXIII No. 037 ______________________________________________________________________ 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 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 9 10 55449 0.21868 .00009 0.40868 .00009 -0.054941 0.000027 10 9 11 55450 0.22032 .00009 0.40652 .00009 -0.055735 0.000029 10 9 12 55451 0.22177 .00009 0.40435 .00009 -0.056277 0.000028 10 9 13 55452 0.22281 .00009 0.40215 .00009 -0.056538 0.000027 10 9 14 55453 0.22371 .00009 0.39975 .00009 -0.056555 0.000025 10 9 15 55454 0.22493 .00009 0.39707 .00009 -0.056408 0.000024 10 9 16 55455 0.22655 .00009 0.39470 .00009 -0.056288 0.000025 _______________________________________________________________________ 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 = 0.0964 + 0.1310 cos A - 0.0027 sin A - 0.0094 cos C + 0.0640 sin C y = 0.3423 - 0.0070 cos A - 0.1166 sin A + 0.0640 cos C + 0.0094 sin C UT1-UTC = -0.0776 - 0.00079 (MJD - 55463) - (UT2-UT1) where A = 2*pi*(MJD-55455)/365.25 and C = 2*pi*(MJD-55455)/435. TAI-UTC(MJD 55456) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55455)**0.80 S t = 0.00025 (MJD-55455)**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 9 17 55456 0.2277 0.3925 -0.05620 2010 9 18 55457 0.2289 0.3906 -0.05619 2010 9 19 55458 0.2299 0.3887 -0.05633 2010 9 20 55459 0.2307 0.3868 -0.05659 2010 9 21 55460 0.2313 0.3849 -0.05694 2010 9 22 55461 0.2319 0.3829 -0.05735 2010 9 23 55462 0.2324 0.3810 -0.05778 2010 9 24 55463 0.2329 0.3790 -0.05820 2010 9 25 55464 0.2332 0.3770 -0.05856 2010 9 26 55465 0.2336 0.3750 -0.05885 2010 9 27 55466 0.2339 0.3730 -0.05908 2010 9 28 55467 0.2341 0.3710 -0.05922 2010 9 29 55468 0.2343 0.3690 -0.05931 2010 9 30 55469 0.2345 0.3669 -0.05940 2010 10 1 55470 0.2347 0.3649 -0.05960 2010 10 2 55471 0.2348 0.3629 -0.05997 2010 10 3 55472 0.2348 0.3609 -0.06060 2010 10 4 55473 0.2348 0.3589 -0.06152 2010 10 5 55474 0.2348 0.3568 -0.06272 2010 10 6 55475 0.2348 0.3548 -0.06412 2010 10 7 55476 0.2347 0.3528 -0.06558 2010 10 8 55477 0.2346 0.3508 -0.06695 2010 10 9 55478 0.2344 0.3487 -0.06811 2010 10 10 55479 0.2343 0.3467 -0.06903 2010 10 11 55480 0.2340 0.3447 -0.06971 2010 10 12 55481 0.2338 0.3427 -0.07025 2010 10 13 55482 0.2335 0.3407 -0.07073 2010 10 14 55483 0.2332 0.3387 -0.07126 2010 10 15 55484 0.2328 0.3367 -0.07188 2010 10 16 55485 0.2324 0.3347 -0.07263 2010 10 17 55486 0.2320 0.3328 -0.07351 2010 10 18 55487 0.2315 0.3308 -0.07451 2010 10 19 55488 0.2310 0.3288 -0.07560 2010 10 20 55489 0.2305 0.3269 -0.07674 2010 10 21 55490 0.2300 0.3249 -0.07787 2010 10 22 55491 0.2294 0.3230 -0.07894 2010 10 23 55492 0.2287 0.3211 -0.07991 2010 10 24 55493 0.2281 0.3191 -0.08077 2010 10 25 55494 0.2274 0.3172 -0.08149 2010 10 26 55495 0.2267 0.3154 -0.08211 2010 10 27 55496 0.2259 0.3135 -0.08268 2010 10 28 55497 0.2251 0.3116 -0.08329 2010 10 29 55498 0.2243 0.3097 -0.08400 2010 10 30 55499 0.2235 0.3079 -0.08489 2010 10 31 55500 0.2226 0.3061 -0.08600 2010 11 1 55501 0.2217 0.3043 -0.08734 2010 11 2 55502 0.2207 0.3025 -0.08885 2010 11 3 55503 0.2198 0.3007 -0.09044 2010 11 4 55504 0.2188 0.2989 -0.09197 2010 11 5 55505 0.2177 0.2971 -0.09334 2010 11 6 55506 0.2167 0.2954 -0.09447 2010 11 7 55507 0.2156 0.2937 -0.09535 2010 11 8 55508 0.2145 0.2920 -0.09604 2010 11 9 55509 0.2134 0.2903 -0.09663 2010 11 10 55510 0.2122 0.2886 -0.09719 2010 11 11 55511 0.2110 0.2870 -0.09781 2010 11 12 55512 0.2098 0.2853 -0.09853 2010 11 13 55513 0.2085 0.2837 -0.09936 2010 11 14 55514 0.2073 0.2821 -0.10029 2010 11 15 55515 0.2060 0.2806 -0.10132 2010 11 16 55516 0.2047 0.2790 -0.10240 2010 11 17 55517 0.2033 0.2775 -0.10348 2010 11 18 55518 0.2019 0.2760 -0.10453 2010 11 19 55519 0.2005 0.2745 -0.10549 2010 11 20 55520 0.1991 0.2730 -0.10634 2010 11 21 55521 0.1977 0.2716 -0.10708 2010 11 22 55522 0.1962 0.2702 -0.10771 2010 11 23 55523 0.1948 0.2688 -0.10829 2010 11 24 55524 0.1932 0.2674 -0.10888 2010 11 25 55525 0.1917 0.2660 -0.10956 2010 11 26 55526 0.1902 0.2647 -0.11042 2010 11 27 55527 0.1886 0.2634 -0.11148 2010 11 28 55528 0.1870 0.2621 -0.11276 2010 11 29 55529 0.1854 0.2609 -0.11421 2010 11 30 55530 0.1838 0.2596 -0.11573 2010 12 1 55531 0.1822 0.2584 -0.11723 2010 12 2 55532 0.1805 0.2573 -0.11859 2010 12 3 55533 0.1788 0.2561 -0.11974 2010 12 4 55534 0.1771 0.2550 -0.12066 2010 12 5 55535 0.1754 0.2539 -0.12136 2010 12 6 55536 0.1737 0.2528 -0.12194 2010 12 7 55537 0.1720 0.2518 -0.12247 2010 12 8 55538 0.1702 0.2507 -0.12305 2010 12 9 55539 0.1685 0.2497 -0.12372 2010 12 10 55540 0.1667 0.2488 -0.12449 2010 12 11 55541 0.1649 0.2478 -0.12538 2010 12 12 55542 0.1631 0.2469 -0.12635 2010 12 13 55543 0.1613 0.2460 -0.12738 2010 12 14 55544 0.1594 0.2452 -0.12841 2010 12 15 55545 0.1576 0.2444 -0.12941 2010 12 16 55546 0.1558 0.2436 -0.13033 2010 12 17 55547 0.1539 0.2428 -0.13114 2010 12 18 55548 0.1520 0.2421 -0.13183 2010 12 19 55549 0.1501 0.2413 -0.13240 2010 12 20 55550 0.1483 0.2407 -0.13289 2010 12 21 55551 0.1464 0.2400 -0.13335 2010 12 22 55552 0.1445 0.2394 -0.13388 2010 12 23 55553 0.1426 0.2388 -0.13455 2010 12 24 55554 0.1406 0.2382 -0.13542 2010 12 25 55555 0.1387 0.2377 -0.13650 2010 12 26 55556 0.1368 0.2372 -0.13775 2010 12 27 55557 0.1349 0.2367 -0.13908 2010 12 28 55558 0.1329 0.2363 -0.14037 2010 12 29 55559 0.1310 0.2358 -0.14153 2010 12 30 55560 0.1290 0.2354 -0.14248 2010 12 31 55561 0.1271 0.2351 -0.14320 2011 1 1 55562 0.1252 0.2348 -0.14373 2011 1 2 55563 0.1232 0.2345 -0.14412 2011 1 3 55564 0.1213 0.2342 -0.14441 2011 1 4 55565 0.1193 0.2340 -0.14472 2011 1 5 55566 0.1174 0.2337 -0.14512 2011 1 6 55567 0.1154 0.2336 -0.14563 2011 1 7 55568 0.1135 0.2334 -0.14627 2011 1 8 55569 0.1115 0.2333 -0.14702 2011 1 9 55570 0.1096 0.2332 -0.14784 2011 1 10 55571 0.1076 0.2331 -0.14868 2011 1 11 55572 0.1057 0.2331 -0.14950 2011 1 12 55573 0.1038 0.2331 -0.15026 2011 1 13 55574 0.1018 0.2331 -0.15094 2011 1 14 55575 0.0999 0.2332 -0.15150 2011 1 15 55576 0.0980 0.2333 -0.15195 2011 1 16 55577 0.0961 0.2334 -0.15233 2011 1 17 55578 0.0942 0.2335 -0.15267 2011 1 18 55579 0.0923 0.2337 -0.15306 2011 1 19 55580 0.0904 0.2339 -0.15359 2011 1 20 55581 0.0885 0.2341 -0.15434 2011 1 21 55582 0.0866 0.2344 -0.15534 2011 1 22 55583 0.0848 0.2347 -0.15658 2011 1 23 55584 0.0829 0.2350 -0.15795 2011 1 24 55585 0.0811 0.2354 -0.15934 2011 1 25 55586 0.0792 0.2357 -0.16062 2011 1 26 55587 0.0774 0.2361 -0.16169 2011 1 27 55588 0.0756 0.2366 -0.16252 2011 1 28 55589 0.0738 0.2370 -0.16314 2011 1 29 55590 0.0720 0.2375 -0.16362 2011 1 30 55591 0.0702 0.2380 -0.16402 2011 1 31 55592 0.0685 0.2386 -0.16444 2011 2 1 55593 0.0667 0.2391 -0.16493 2011 2 2 55594 0.0650 0.2397 -0.16554 2011 2 3 55595 0.0633 0.2403 -0.16629 2011 2 4 55596 0.0616 0.2410 -0.16715 2011 2 5 55597 0.0599 0.2416 -0.16812 2011 2 6 55598 0.0582 0.2423 -0.16913 2011 2 7 55599 0.0566 0.2431 -0.17014 2011 2 8 55600 0.0549 0.2438 -0.17111 2011 2 9 55601 0.0533 0.2446 -0.17200 2011 2 10 55602 0.0517 0.2454 -0.17279 2011 2 11 55603 0.0501 0.2462 -0.17347 2011 2 12 55604 0.0485 0.2470 -0.17406 2011 2 13 55605 0.0470 0.2479 -0.17461 2011 2 14 55606 0.0454 0.2488 -0.17518 2011 2 15 55607 0.0439 0.2497 -0.17586 2011 2 16 55608 0.0424 0.2506 -0.17673 2011 2 17 55609 0.0410 0.2516 -0.17786 2011 2 18 55610 0.0395 0.2526 -0.17928 2011 2 19 55611 0.0381 0.2536 -0.18091 2011 2 20 55612 0.0367 0.2546 -0.18263 2011 2 21 55613 0.0353 0.2556 -0.18430 2011 2 22 55614 0.0339 0.2567 -0.18579 2011 2 23 55615 0.0326 0.2578 -0.18703 2011 2 24 55616 0.0313 0.2589 -0.18802 2011 2 25 55617 0.0300 0.2600 -0.18883 2011 2 26 55618 0.0287 0.2612 -0.18954 2011 2 27 55619 0.0274 0.2623 -0.19023 2011 2 28 55620 0.0262 0.2635 -0.19098 2011 3 1 55621 0.0250 0.2647 -0.19184 2011 3 2 55622 0.0238 0.2659 -0.19282 2011 3 3 55623 0.0227 0.2672 -0.19392 2011 3 4 55624 0.0215 0.2684 -0.19512 2011 3 5 55625 0.0204 0.2697 -0.19639 2011 3 6 55626 0.0193 0.2710 -0.19767 2011 3 7 55627 0.0183 0.2723 -0.19892 2011 3 8 55628 0.0173 0.2736 -0.20010 2011 3 9 55629 0.0162 0.2749 -0.20118 2011 3 10 55630 0.0153 0.2763 -0.20215 2011 3 11 55631 0.0143 0.2777 -0.20302 2011 3 12 55632 0.0134 0.2790 -0.20383 2011 3 13 55633 0.0125 0.2804 -0.20462 2011 3 14 55634 0.0116 0.2818 -0.20548 2011 3 15 55635 0.0108 0.2833 -0.20648 2011 3 16 55636 0.0100 0.2847 -0.20772 2011 3 17 55637 0.0092 0.2861 -0.20923 2011 3 18 55638 0.0084 0.2876 -0.21101 2011 3 19 55639 0.0077 0.2891 -0.21296 2011 3 20 55640 0.0070 0.2905 -0.21494 2011 3 21 55641 0.0063 0.2920 -0.21682 2011 3 22 55642 0.0056 0.2935 -0.21847 2011 3 23 55643 0.0050 0.2950 -0.21984 2011 3 24 55644 0.0044 0.2965 -0.22098 2011 3 25 55645 0.0038 0.2981 -0.22196 2011 3 26 55646 0.0033 0.2996 -0.22285 2011 3 27 55647 0.0028 0.3011 -0.22375 2011 3 28 55648 0.0023 0.3027 -0.22470 2011 3 29 55649 0.0018 0.3042 -0.22572 2011 3 30 55650 0.0014 0.3058 -0.22682 2011 3 31 55651 0.0010 0.3074 -0.22798 2011 4 1 55652 0.0006 0.3089 -0.22918 2011 4 2 55653 0.0003 0.3105 -0.23037 2011 4 3 55654 0.0000 0.3121 -0.23150 2011 4 4 55655 -0.0003 0.3137 -0.23254 2011 4 5 55656 -0.0006 0.3153 -0.23346 2011 4 6 55657 -0.0008 0.3169 -0.23425 2011 4 7 55658 -0.0010 0.3185 -0.23493 2011 4 8 55659 -0.0012 0.3201 -0.23554 2011 4 9 55660 -0.0013 0.3217 -0.23614 2011 4 10 55661 -0.0014 0.3233 -0.23680 2011 4 11 55662 -0.0015 0.3249 -0.23760 2011 4 12 55663 -0.0016 0.3265 -0.23863 2011 4 13 55664 -0.0016 0.3281 -0.23993 2011 4 14 55665 -0.0016 0.3297 -0.24152 2011 4 15 55666 -0.0016 0.3313 -0.24334 2011 4 16 55667 -0.0015 0.3329 -0.24529 2011 4 17 55668 -0.0014 0.3345 -0.24721 2011 4 18 55669 -0.0013 0.3361 -0.24899 2011 4 19 55670 -0.0012 0.3377 -0.25054 2011 4 20 55671 -0.0010 0.3393 -0.25185 2011 4 21 55672 -0.0008 0.3409 -0.25296 2011 4 22 55673 -0.0006 0.3425 -0.25397 2011 4 23 55674 -0.0003 0.3441 -0.25498 2011 4 24 55675 -0.0001 0.3457 -0.25606 2011 4 25 55676 0.0002 0.3472 -0.25724 2011 4 26 55677 0.0006 0.3488 -0.25857 2011 4 27 55678 0.0009 0.3504 -0.26001 2011 4 28 55679 0.0013 0.3519 -0.26151 2011 4 29 55680 0.0017 0.3535 -0.26302 2011 4 30 55681 0.0022 0.3551 -0.26449 2011 5 1 55682 0.0026 0.3566 -0.26584 2011 5 2 55683 0.0031 0.3581 -0.26701 2011 5 3 55684 0.0036 0.3597 -0.26801 2011 5 4 55685 0.0041 0.3612 -0.26883 2011 5 5 55686 0.0047 0.3627 -0.26952 2011 5 6 55687 0.0053 0.3642 -0.27011 2011 5 7 55688 0.0059 0.3657 -0.27067 2011 5 8 55689 0.0065 0.3672 -0.27130 2011 5 9 55690 0.0072 0.3686 -0.27208 2011 5 10 55691 0.0079 0.3701 -0.27313 2011 5 11 55692 0.0086 0.3716 -0.27445 2011 5 12 55693 0.0093 0.3730 -0.27601 2011 5 13 55694 0.0101 0.3744 -0.27770 2011 5 14 55695 0.0108 0.3758 -0.27940 2011 5 15 55696 0.0116 0.3773 -0.28103 2011 5 16 55697 0.0125 0.3786 -0.28240 2011 5 17 55698 0.0133 0.3800 -0.28349 2011 5 18 55699 0.0142 0.3814 -0.28429 2011 5 19 55700 0.0150 0.3828 -0.28483 2011 5 20 55701 0.0159 0.3841 -0.28529 2011 5 21 55702 0.0169 0.3854 -0.28579 2011 5 22 55703 0.0178 0.3867 -0.28632 2011 5 23 55704 0.0188 0.3880 -0.28695 2011 5 24 55705 0.0198 0.3893 -0.28768 2011 5 25 55706 0.0208 0.3906 -0.28850 2011 5 26 55707 0.0218 0.3918 -0.28929 2011 5 27 55708 0.0228 0.3931 -0.29002 2011 5 28 55709 0.0239 0.3943 -0.29062 2011 5 29 55710 0.0250 0.3955 -0.29106 2011 5 30 55711 0.0261 0.3967 -0.29137 2011 5 31 55712 0.0272 0.3979 -0.29160 2011 6 1 55713 0.0283 0.3990 -0.29171 2011 6 2 55714 0.0294 0.4001 -0.29168 2011 6 3 55715 0.0306 0.4013 -0.29160 2011 6 4 55716 0.0318 0.4024 -0.29154 2011 6 5 55717 0.0330 0.4035 -0.29160 2011 6 6 55718 0.0342 0.4045 -0.29188 2011 6 7 55719 0.0354 0.4056 -0.29232 2011 6 8 55720 0.0366 0.4066 -0.29294 2011 6 9 55721 0.0379 0.4076 -0.29367 2011 6 10 55722 0.0391 0.4086 -0.29447 2011 6 11 55723 0.0404 0.4096 -0.29517 2011 6 12 55724 0.0417 0.4105 -0.29568 2011 6 13 55725 0.0430 0.4115 -0.29595 2011 6 14 55726 0.0443 0.4124 -0.29597 2011 6 15 55727 0.0456 0.4133 -0.29576 2011 6 16 55728 0.0470 0.4141 -0.29548 2011 6 17 55729 0.0483 0.4150 -0.29517 2011 6 18 55730 0.0497 0.4158 -0.29494 2011 6 19 55731 0.0510 0.4166 -0.29482 2011 6 20 55732 0.0524 0.4174 -0.29484 2011 6 21 55733 0.0538 0.4182 -0.29503 2011 6 22 55734 0.0552 0.4189 -0.29529 2011 6 23 55735 0.0566 0.4197 -0.29557 2011 6 24 55736 0.0580 0.4204 -0.29580 2011 6 25 55737 0.0594 0.4211 -0.29598 2011 6 26 55738 0.0608 0.4217 -0.29614 2011 6 27 55739 0.0623 0.4224 -0.29620 2011 6 28 55740 0.0637 0.4230 -0.29615 2011 6 29 55741 0.0651 0.4236 -0.29599 2011 6 30 55742 0.0666 0.4242 -0.29577 2011 7 1 55743 0.0680 0.4247 -0.29557 2011 7 2 55744 0.0695 0.4253 -0.29549 2011 7 3 55745 0.0709 0.4258 -0.29556 2011 7 4 55746 0.0724 0.4263 -0.29577 2011 7 5 55747 0.0739 0.4267 -0.29609 2011 7 6 55748 0.0753 0.4272 -0.29647 2011 7 7 55749 0.0768 0.4276 -0.29679 2011 7 8 55750 0.0783 0.4280 -0.29702 2011 7 9 55751 0.0797 0.4284 -0.29710 2011 7 10 55752 0.0812 0.4288 -0.29700 2011 7 11 55753 0.0827 0.4291 -0.29669 2011 7 12 55754 0.0842 0.4294 -0.29615 2011 7 13 55755 0.0856 0.4297 -0.29556 2011 7 14 55756 0.0871 0.4300 -0.29499 2011 7 15 55757 0.0886 0.4302 -0.29455 2011 7 16 55758 0.0901 0.4305 -0.29421 2011 7 17 55759 0.0915 0.4307 -0.29398 2011 7 18 55760 0.0930 0.4309 -0.29383 2011 7 19 55761 0.0945 0.4310 -0.29375 2011 7 20 55762 0.0959 0.4312 -0.29372 2011 7 21 55763 0.0974 0.4313 -0.29368 2011 7 22 55764 0.0989 0.4314 -0.29358 2011 7 23 55765 0.1003 0.4315 -0.29335 2011 7 24 55766 0.1018 0.4315 -0.29297 2011 7 25 55767 0.1032 0.4315 -0.29247 2011 7 26 55768 0.1046 0.4316 -0.29190 2011 7 27 55769 0.1061 0.4315 -0.29127 2011 7 28 55770 0.1075 0.4315 -0.29057 2011 7 29 55771 0.1089 0.4315 -0.28990 2011 7 30 55772 0.1103 0.4314 -0.28936 2011 7 31 55773 0.1117 0.4313 -0.28908 2011 8 1 55774 0.1131 0.4312 -0.28902 2011 8 2 55775 0.1145 0.4310 -0.28909 2011 8 3 55776 0.1159 0.4309 -0.28922 2011 8 4 55777 0.1173 0.4307 -0.28927 2011 8 5 55778 0.1186 0.4305 -0.28919 2011 8 6 55779 0.1200 0.4303 -0.28894 2011 8 7 55780 0.1213 0.4301 -0.28845 2011 8 8 55781 0.1227 0.4298 -0.28778 2011 8 9 55782 0.1240 0.4295 -0.28700 2011 8 10 55783 0.1253 0.4293 -0.28628 2011 8 11 55784 0.1266 0.4289 -0.28571 2011 8 12 55785 0.1279 0.4286 -0.28531 2011 8 13 55786 0.1292 0.4283 -0.28508 2011 8 14 55787 0.1305 0.4279 -0.28495 2011 8 15 55788 0.1317 0.4275 -0.28488 2011 8 16 55789 0.1330 0.4271 -0.28484 2011 8 17 55790 0.1342 0.4267 -0.28477 2011 8 18 55791 0.1354 0.4262 -0.28468 2011 8 19 55792 0.1366 0.4258 -0.28450 2011 8 20 55793 0.1378 0.4253 -0.28423 2011 8 21 55794 0.1390 0.4248 -0.28390 2011 8 22 55795 0.1402 0.4243 -0.28351 2011 8 23 55796 0.1413 0.4238 -0.28308 2011 8 24 55797 0.1425 0.4232 -0.28264 2011 8 25 55798 0.1436 0.4227 -0.28226 2011 8 26 55799 0.1447 0.4221 -0.28208 2011 8 27 55800 0.1458 0.4215 -0.28220 2011 8 28 55801 0.1468 0.4209 -0.28255 2011 8 29 55802 0.1479 0.4203 -0.28311 2011 8 30 55803 0.1490 0.4196 -0.28381 2011 8 31 55804 0.1500 0.4190 -0.28454 2011 9 1 55805 0.1510 0.4183 -0.28516 2011 9 2 55806 0.1520 0.4176 -0.28560 2011 9 3 55807 0.1530 0.4169 -0.28577 2011 9 4 55808 0.1539 0.4162 -0.28571 2011 9 5 55809 0.1549 0.4155 -0.28554 2011 9 6 55810 0.1558 0.4148 -0.28534 2011 9 7 55811 0.1567 0.4140 -0.28520 2011 9 8 55812 0.1576 0.4133 -0.28526 2011 9 9 55813 0.1585 0.4125 -0.28550 2011 9 10 55814 0.1593 0.4117 -0.28589 2011 9 11 55815 0.1602 0.4109 -0.28639 2011 9 12 55816 0.1610 0.4101 -0.28697 2011 9 13 55817 0.1618 0.4093 -0.28756 2011 9 14 55818 0.1626 0.4084 -0.28818 2011 9 15 55819 0.1633 0.4076 -0.28874 2011 9 16 55820 0.1641 0.4067 -0.28918 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) 55436 -75.00 0.13 -9.38 0.17 55437 -74.97 0.74 -9.56 0.34 55438 -74.85 0.74 -9.65 0.34 55439 -74.90 0.74 -9.77 0.34 55440 -75.24 0.14 -9.91 0.34 55441 -75.64 0.14 -9.98 0.34 55442 -75.77 0.14 -9.95 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55436 0.063 0.052 -0.032 0.170 55437 0.065 0.294 -0.072 0.340 55438 0.072 0.294 -0.094 0.340 55439 0.087 0.294 -0.109 0.340 55440 0.098 0.056 -0.109 0.340 55441 0.105 0.056 -0.106 0.340 55442 0.116 0.056 -0.096 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.