********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 23 September 2010 Vol. XXIII No. 038 ______________________________________________________________________ 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 17 55456 0.22803 .00009 0.39285 .00009 -0.056181 0.000020 10 9 18 55457 0.22934 .00009 0.39109 .00009 -0.056168 0.000016 10 9 19 55458 0.23063 .00009 0.38944 .00009 -0.056294 0.000014 10 9 20 55459 0.23153 .00009 0.38786 .00009 -0.056549 0.000013 10 9 21 55460 0.23201 .00009 0.38606 .00009 -0.056894 0.000011 10 9 22 55461 0.23237 .00009 0.38402 .00009 -0.057309 0.000010 10 9 23 55462 0.23311 .00009 0.38188 .00009 -0.057791 0.000010 _______________________________________________________________________ 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 + 0.1316 cos A - 0.0135 sin A - 0.0020 cos C + 0.0598 sin C y = 0.3439 - 0.0169 cos A - 0.1165 sin A + 0.0598 cos C + 0.0020 sin C UT1-UTC = -0.0791 - 0.00079 (MJD - 55470) - (UT2-UT1) where A = 2*pi*(MJD-55462)/365.25 and C = 2*pi*(MJD-55462)/435. TAI-UTC(MJD 55463) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55462)**0.80 S t = 0.00025 (MJD-55462)**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 24 55463 0.2335 0.3799 -0.05830 2010 9 25 55464 0.2342 0.3779 -0.05879 2010 9 26 55465 0.2347 0.3759 -0.05921 2010 9 27 55466 0.2352 0.3739 -0.05954 2010 9 28 55467 0.2355 0.3719 -0.05976 2010 9 29 55468 0.2358 0.3699 -0.05990 2010 9 30 55469 0.2361 0.3679 -0.06004 2010 10 1 55470 0.2362 0.3659 -0.06024 2010 10 2 55471 0.2364 0.3639 -0.06058 2010 10 3 55472 0.2365 0.3618 -0.06116 2010 10 4 55473 0.2365 0.3598 -0.06201 2010 10 5 55474 0.2366 0.3577 -0.06310 2010 10 6 55475 0.2365 0.3557 -0.06434 2010 10 7 55476 0.2365 0.3537 -0.06560 2010 10 8 55477 0.2364 0.3516 -0.06675 2010 10 9 55478 0.2363 0.3496 -0.06768 2010 10 10 55479 0.2361 0.3475 -0.06837 2010 10 11 55480 0.2359 0.3455 -0.06884 2010 10 12 55481 0.2357 0.3435 -0.06918 2010 10 13 55482 0.2354 0.3415 -0.06949 2010 10 14 55483 0.2351 0.3394 -0.06985 2010 10 15 55484 0.2348 0.3374 -0.07030 2010 10 16 55485 0.2344 0.3354 -0.07089 2010 10 17 55486 0.2340 0.3334 -0.07163 2010 10 18 55487 0.2336 0.3314 -0.07250 2010 10 19 55488 0.2331 0.3294 -0.07348 2010 10 20 55489 0.2326 0.3275 -0.07452 2010 10 21 55490 0.2321 0.3255 -0.07557 2010 10 22 55491 0.2315 0.3235 -0.07657 2010 10 23 55492 0.2309 0.3216 -0.07749 2010 10 24 55493 0.2302 0.3196 -0.07830 2010 10 25 55494 0.2296 0.3177 -0.07900 2010 10 26 55495 0.2289 0.3158 -0.07962 2010 10 27 55496 0.2281 0.3139 -0.08020 2010 10 28 55497 0.2274 0.3120 -0.08081 2010 10 29 55498 0.2266 0.3101 -0.08153 2010 10 30 55499 0.2257 0.3083 -0.08244 2010 10 31 55500 0.2249 0.3064 -0.08358 2010 11 1 55501 0.2240 0.3046 -0.08494 2010 11 2 55502 0.2231 0.3027 -0.08647 2010 11 3 55503 0.2221 0.3009 -0.08808 2010 11 4 55504 0.2211 0.2991 -0.08963 2010 11 5 55505 0.2201 0.2973 -0.09101 2010 11 6 55506 0.2191 0.2956 -0.09215 2010 11 7 55507 0.2180 0.2938 -0.09305 2010 11 8 55508 0.2169 0.2921 -0.09376 2010 11 9 55509 0.2158 0.2904 -0.09436 2010 11 10 55510 0.2146 0.2887 -0.09495 2010 11 11 55511 0.2135 0.2870 -0.09558 2010 11 12 55512 0.2123 0.2854 -0.09632 2010 11 13 55513 0.2110 0.2837 -0.09716 2010 11 14 55514 0.2098 0.2821 -0.09810 2010 11 15 55515 0.2085 0.2805 -0.09912 2010 11 16 55516 0.2072 0.2789 -0.10018 2010 11 17 55517 0.2058 0.2774 -0.10125 2010 11 18 55518 0.2045 0.2758 -0.10227 2010 11 19 55519 0.2031 0.2743 -0.10319 2010 11 20 55520 0.2017 0.2728 -0.10399 2010 11 21 55521 0.2003 0.2714 -0.10466 2010 11 22 55522 0.1988 0.2699 -0.10521 2010 11 23 55523 0.1973 0.2685 -0.10569 2010 11 24 55524 0.1958 0.2671 -0.10617 2010 11 25 55525 0.1943 0.2657 -0.10674 2010 11 26 55526 0.1928 0.2644 -0.10747 2010 11 27 55527 0.1912 0.2630 -0.10842 2010 11 28 55528 0.1896 0.2617 -0.10957 2010 11 29 55529 0.1880 0.2604 -0.11089 2010 11 30 55530 0.1864 0.2592 -0.11230 2010 12 1 55531 0.1848 0.2580 -0.11368 2010 12 2 55532 0.1831 0.2568 -0.11493 2010 12 3 55533 0.1815 0.2556 -0.11599 2010 12 4 55534 0.1798 0.2544 -0.11684 2010 12 5 55535 0.1781 0.2533 -0.11749 2010 12 6 55536 0.1764 0.2522 -0.11803 2010 12 7 55537 0.1746 0.2511 -0.11855 2010 12 8 55538 0.1729 0.2501 -0.11910 2010 12 9 55539 0.1711 0.2491 -0.11975 2010 12 10 55540 0.1693 0.2481 -0.12052 2010 12 11 55541 0.1675 0.2471 -0.12139 2010 12 12 55542 0.1657 0.2462 -0.12236 2010 12 13 55543 0.1639 0.2453 -0.12337 2010 12 14 55544 0.1621 0.2444 -0.12438 2010 12 15 55545 0.1602 0.2435 -0.12535 2010 12 16 55546 0.1584 0.2427 -0.12623 2010 12 17 55547 0.1565 0.2419 -0.12700 2010 12 18 55548 0.1547 0.2411 -0.12766 2010 12 19 55549 0.1528 0.2404 -0.12820 2010 12 20 55550 0.1509 0.2397 -0.12866 2010 12 21 55551 0.1490 0.2390 -0.12911 2010 12 22 55552 0.1471 0.2384 -0.12962 2010 12 23 55553 0.1452 0.2378 -0.13029 2010 12 24 55554 0.1433 0.2372 -0.13116 2010 12 25 55555 0.1413 0.2366 -0.13226 2010 12 26 55556 0.1394 0.2361 -0.13353 2010 12 27 55557 0.1375 0.2356 -0.13489 2010 12 28 55558 0.1355 0.2351 -0.13621 2010 12 29 55559 0.1336 0.2347 -0.13741 2010 12 30 55560 0.1316 0.2342 -0.13840 2010 12 31 55561 0.1297 0.2339 -0.13917 2011 1 1 55562 0.1277 0.2335 -0.13974 2011 1 2 55563 0.1258 0.2332 -0.14017 2011 1 3 55564 0.1238 0.2329 -0.14054 2011 1 4 55565 0.1219 0.2326 -0.14093 2011 1 5 55566 0.1199 0.2324 -0.14139 2011 1 6 55567 0.1179 0.2322 -0.14197 2011 1 7 55568 0.1160 0.2320 -0.14265 2011 1 8 55569 0.1140 0.2319 -0.14344 2011 1 9 55570 0.1121 0.2318 -0.14429 2011 1 10 55571 0.1101 0.2317 -0.14510 2011 1 11 55572 0.1082 0.2316 -0.14589 2011 1 12 55573 0.1062 0.2316 -0.14663 2011 1 13 55574 0.1043 0.2316 -0.14726 2011 1 14 55575 0.1023 0.2317 -0.14779 2011 1 15 55576 0.1004 0.2317 -0.14821 2011 1 16 55577 0.0985 0.2318 -0.14855 2011 1 17 55578 0.0966 0.2320 -0.14886 2011 1 18 55579 0.0947 0.2321 -0.14921 2011 1 19 55580 0.0927 0.2323 -0.14971 2011 1 20 55581 0.0908 0.2325 -0.15042 2011 1 21 55582 0.0890 0.2328 -0.15139 2011 1 22 55583 0.0871 0.2330 -0.15259 2011 1 23 55584 0.0852 0.2333 -0.15393 2011 1 24 55585 0.0833 0.2337 -0.15528 2011 1 25 55586 0.0815 0.2340 -0.15653 2011 1 26 55587 0.0797 0.2344 -0.15757 2011 1 27 55588 0.0778 0.2348 -0.15838 2011 1 28 55589 0.0760 0.2352 -0.15897 2011 1 29 55590 0.0742 0.2357 -0.15942 2011 1 30 55591 0.0724 0.2362 -0.15981 2011 1 31 55592 0.0706 0.2367 -0.16020 2011 2 1 55593 0.0689 0.2373 -0.16067 2011 2 2 55594 0.0671 0.2379 -0.16127 2011 2 3 55595 0.0654 0.2385 -0.16199 2011 2 4 55596 0.0636 0.2391 -0.16284 2011 2 5 55597 0.0619 0.2397 -0.16379 2011 2 6 55598 0.0602 0.2404 -0.16478 2011 2 7 55599 0.0586 0.2411 -0.16577 2011 2 8 55600 0.0569 0.2419 -0.16672 2011 2 9 55601 0.0552 0.2426 -0.16759 2011 2 10 55602 0.0536 0.2434 -0.16836 2011 2 11 55603 0.0520 0.2442 -0.16903 2011 2 12 55604 0.0504 0.2450 -0.16961 2011 2 13 55605 0.0488 0.2459 -0.17014 2011 2 14 55606 0.0473 0.2468 -0.17069 2011 2 15 55607 0.0458 0.2477 -0.17135 2011 2 16 55608 0.0442 0.2486 -0.17221 2011 2 17 55609 0.0427 0.2495 -0.17333 2011 2 18 55610 0.0413 0.2505 -0.17474 2011 2 19 55611 0.0398 0.2515 -0.17636 2011 2 20 55612 0.0384 0.2525 -0.17808 2011 2 21 55613 0.0370 0.2535 -0.17974 2011 2 22 55614 0.0356 0.2546 -0.18123 2011 2 23 55615 0.0342 0.2557 -0.18247 2011 2 24 55616 0.0329 0.2568 -0.18346 2011 2 25 55617 0.0315 0.2579 -0.18427 2011 2 26 55618 0.0302 0.2590 -0.18497 2011 2 27 55619 0.0290 0.2602 -0.18566 2011 2 28 55620 0.0277 0.2614 -0.18641 2011 3 1 55621 0.0265 0.2625 -0.18726 2011 3 2 55622 0.0253 0.2638 -0.18824 2011 3 3 55623 0.0241 0.2650 -0.18933 2011 3 4 55624 0.0229 0.2662 -0.19053 2011 3 5 55625 0.0218 0.2675 -0.19179 2011 3 6 55626 0.0207 0.2688 -0.19307 2011 3 7 55627 0.0196 0.2701 -0.19431 2011 3 8 55628 0.0186 0.2714 -0.19548 2011 3 9 55629 0.0175 0.2727 -0.19655 2011 3 10 55630 0.0165 0.2741 -0.19751 2011 3 11 55631 0.0155 0.2754 -0.19838 2011 3 12 55632 0.0146 0.2768 -0.19918 2011 3 13 55633 0.0137 0.2782 -0.19997 2011 3 14 55634 0.0128 0.2796 -0.20082 2011 3 15 55635 0.0119 0.2810 -0.20181 2011 3 16 55636 0.0110 0.2824 -0.20304 2011 3 17 55637 0.0102 0.2839 -0.20454 2011 3 18 55638 0.0094 0.2853 -0.20630 2011 3 19 55639 0.0087 0.2868 -0.20823 2011 3 20 55640 0.0079 0.2883 -0.21019 2011 3 21 55641 0.0072 0.2897 -0.21205 2011 3 22 55642 0.0065 0.2912 -0.21367 2011 3 23 55643 0.0059 0.2927 -0.21503 2011 3 24 55644 0.0053 0.2943 -0.21616 2011 3 25 55645 0.0047 0.2958 -0.21713 2011 3 26 55646 0.0041 0.2973 -0.21805 2011 3 27 55647 0.0036 0.2989 -0.21901 2011 3 28 55648 0.0031 0.3004 -0.22004 2011 3 29 55649 0.0026 0.3020 -0.22118 2011 3 30 55650 0.0021 0.3035 -0.22244 2011 3 31 55651 0.0017 0.3051 -0.22379 2011 4 1 55652 0.0013 0.3067 -0.22521 2011 4 2 55653 0.0009 0.3082 -0.22664 2011 4 3 55654 0.0006 0.3098 -0.22803 2011 4 4 55655 0.0003 0.3114 -0.22933 2011 4 5 55656 0.0000 0.3130 -0.23052 2011 4 6 55657 -0.0003 0.3146 -0.23156 2011 4 7 55658 -0.0005 0.3162 -0.23249 2011 4 8 55659 -0.0007 0.3178 -0.23330 2011 4 9 55660 -0.0008 0.3194 -0.23406 2011 4 10 55661 -0.0010 0.3210 -0.23481 2011 4 11 55662 -0.0011 0.3226 -0.23563 2011 4 12 55663 -0.0012 0.3242 -0.23658 2011 4 13 55664 -0.0012 0.3259 -0.23772 2011 4 14 55665 -0.0013 0.3275 -0.23907 2011 4 15 55666 -0.0013 0.3291 -0.24059 2011 4 16 55667 -0.0012 0.3307 -0.24219 2011 4 17 55668 -0.0012 0.3323 -0.24374 2011 4 18 55669 -0.0011 0.3339 -0.24513 2011 4 19 55670 -0.0010 0.3355 -0.24628 2011 4 20 55671 -0.0008 0.3371 -0.24720 2011 4 21 55672 -0.0007 0.3387 -0.24794 2011 4 22 55673 -0.0005 0.3403 -0.24861 2011 4 23 55674 -0.0002 0.3419 -0.24932 2011 4 24 55675 0.0000 0.3435 -0.25014 2011 4 25 55676 0.0003 0.3451 -0.25110 2011 4 26 55677 0.0006 0.3467 -0.25218 2011 4 27 55678 0.0009 0.3483 -0.25335 2011 4 28 55679 0.0013 0.3498 -0.25457 2011 4 29 55680 0.0017 0.3514 -0.25582 2011 4 30 55681 0.0021 0.3529 -0.25707 2011 5 1 55682 0.0025 0.3545 -0.25825 2011 5 2 55683 0.0030 0.3560 -0.25933 2011 5 3 55684 0.0035 0.3576 -0.26031 2011 5 4 55685 0.0040 0.3591 -0.26119 2011 5 5 55686 0.0045 0.3606 -0.26195 2011 5 6 55687 0.0051 0.3621 -0.26263 2011 5 7 55688 0.0057 0.3637 -0.26335 2011 5 8 55689 0.0063 0.3651 -0.26413 2011 5 9 55690 0.0069 0.3666 -0.26505 2011 5 10 55691 0.0076 0.3681 -0.26621 2011 5 11 55692 0.0083 0.3696 -0.26763 2011 5 12 55693 0.0090 0.3710 -0.26923 2011 5 13 55694 0.0097 0.3725 -0.27094 2011 5 14 55695 0.0105 0.3739 -0.27265 2011 5 15 55696 0.0112 0.3753 -0.27421 2011 5 16 55697 0.0120 0.3767 -0.27549 2011 5 17 55698 0.0129 0.3781 -0.27648 2011 5 18 55699 0.0137 0.3795 -0.27720 2011 5 19 55700 0.0146 0.3809 -0.27774 2011 5 20 55701 0.0154 0.3822 -0.27820 2011 5 21 55702 0.0164 0.3836 -0.27866 2011 5 22 55703 0.0173 0.3849 -0.27921 2011 5 23 55704 0.0182 0.3862 -0.27987 2011 5 24 55705 0.0192 0.3875 -0.28068 2011 5 25 55706 0.0202 0.3888 -0.28163 2011 5 26 55707 0.0212 0.3901 -0.28262 2011 5 27 55708 0.0222 0.3913 -0.28360 2011 5 28 55709 0.0233 0.3925 -0.28452 2011 5 29 55710 0.0243 0.3938 -0.28535 2011 5 30 55711 0.0254 0.3950 -0.28601 2011 5 31 55712 0.0265 0.3962 -0.28649 2011 6 1 55713 0.0276 0.3973 -0.28679 2011 6 2 55714 0.0287 0.3985 -0.28690 2011 6 3 55715 0.0299 0.3996 -0.28697 2011 6 4 55716 0.0310 0.4007 -0.28708 2011 6 5 55717 0.0322 0.4018 -0.28726 2011 6 6 55718 0.0334 0.4029 -0.28762 2011 6 7 55719 0.0346 0.4040 -0.28819 2011 6 8 55720 0.0358 0.4050 -0.28897 2011 6 9 55721 0.0371 0.4061 -0.28982 2011 6 10 55722 0.0383 0.4071 -0.29066 2011 6 11 55723 0.0396 0.4081 -0.29136 2011 6 12 55724 0.0409 0.4090 -0.29184 2011 6 13 55725 0.0422 0.4100 -0.29212 2011 6 14 55726 0.0435 0.4109 -0.29222 2011 6 15 55727 0.0448 0.4118 -0.29216 2011 6 16 55728 0.0461 0.4127 -0.29196 2011 6 17 55729 0.0474 0.4136 -0.29175 2011 6 18 55730 0.0488 0.4144 -0.29159 2011 6 19 55731 0.0501 0.4153 -0.29153 2011 6 20 55732 0.0515 0.4161 -0.29162 2011 6 21 55733 0.0529 0.4169 -0.29176 2011 6 22 55734 0.0543 0.4176 -0.29192 2011 6 23 55735 0.0556 0.4184 -0.29207 2011 6 24 55736 0.0570 0.4191 -0.29222 2011 6 25 55737 0.0585 0.4198 -0.29224 2011 6 26 55738 0.0599 0.4205 -0.29213 2011 6 27 55739 0.0613 0.4212 -0.29187 2011 6 28 55740 0.0627 0.4218 -0.29145 2011 6 29 55741 0.0642 0.4224 -0.29088 2011 6 30 55742 0.0656 0.4230 -0.29028 2011 7 1 55743 0.0670 0.4236 -0.28968 2011 7 2 55744 0.0685 0.4242 -0.28920 2011 7 3 55745 0.0699 0.4247 -0.28890 2011 7 4 55746 0.0714 0.4252 -0.28886 2011 7 5 55747 0.0729 0.4257 -0.28909 2011 7 6 55748 0.0743 0.4262 -0.28952 2011 7 7 55749 0.0758 0.4266 -0.29001 2011 7 8 55750 0.0773 0.4270 -0.29044 2011 7 9 55751 0.0787 0.4274 -0.29076 2011 7 10 55752 0.0802 0.4278 -0.29099 2011 7 11 55753 0.0817 0.4282 -0.29105 2011 7 12 55754 0.0832 0.4285 -0.29095 2011 7 13 55755 0.0846 0.4288 -0.29074 2011 7 14 55756 0.0861 0.4291 -0.29050 2011 7 15 55757 0.0876 0.4294 -0.29032 2011 7 16 55758 0.0891 0.4296 -0.29026 2011 7 17 55759 0.0905 0.4299 -0.29029 2011 7 18 55760 0.0920 0.4301 -0.29036 2011 7 19 55761 0.0935 0.4302 -0.29042 2011 7 20 55762 0.0949 0.4304 -0.29041 2011 7 21 55763 0.0964 0.4305 -0.29028 2011 7 22 55764 0.0979 0.4307 -0.29005 2011 7 23 55765 0.0993 0.4308 -0.28973 2011 7 24 55766 0.1008 0.4308 -0.28930 2011 7 25 55767 0.1022 0.4309 -0.28877 2011 7 26 55768 0.1037 0.4309 -0.28809 2011 7 27 55769 0.1051 0.4309 -0.28739 2011 7 28 55770 0.1065 0.4309 -0.28676 2011 7 29 55771 0.1079 0.4309 -0.28628 2011 7 30 55772 0.1094 0.4308 -0.28597 2011 7 31 55773 0.1108 0.4308 -0.28588 2011 8 1 55774 0.1122 0.4307 -0.28599 2011 8 2 55775 0.1136 0.4305 -0.28631 2011 8 3 55776 0.1150 0.4304 -0.28676 2011 8 4 55777 0.1163 0.4303 -0.28720 2011 8 5 55778 0.1177 0.4301 -0.28750 2011 8 6 55779 0.1191 0.4299 -0.28759 2011 8 7 55780 0.1204 0.4297 -0.28743 2011 8 8 55781 0.1218 0.4294 -0.28709 2011 8 9 55782 0.1231 0.4292 -0.28667 2011 8 10 55783 0.1244 0.4289 -0.28622 2011 8 11 55784 0.1258 0.4286 -0.28574 2011 8 12 55785 0.1271 0.4283 -0.28529 2011 8 13 55786 0.1284 0.4280 -0.28494 2011 8 14 55787 0.1296 0.4276 -0.28474 2011 8 15 55788 0.1309 0.4273 -0.28462 2011 8 16 55789 0.1322 0.4269 -0.28449 2011 8 17 55790 0.1334 0.4265 -0.28432 2011 8 18 55791 0.1346 0.4260 -0.28407 2011 8 19 55792 0.1359 0.4256 -0.28374 2011 8 20 55793 0.1371 0.4251 -0.28334 2011 8 21 55794 0.1383 0.4247 -0.28282 2011 8 22 55795 0.1394 0.4242 -0.28220 2011 8 23 55796 0.1406 0.4237 -0.28152 2011 8 24 55797 0.1418 0.4231 -0.28092 2011 8 25 55798 0.1429 0.4226 -0.28049 2011 8 26 55799 0.1440 0.4220 -0.28028 2011 8 27 55800 0.1451 0.4215 -0.28034 2011 8 28 55801 0.1462 0.4209 -0.28062 2011 8 29 55802 0.1473 0.4203 -0.28112 2011 8 30 55803 0.1484 0.4196 -0.28177 2011 8 31 55804 0.1494 0.4190 -0.28243 2011 9 1 55805 0.1504 0.4184 -0.28303 2011 9 2 55806 0.1514 0.4177 -0.28343 2011 9 3 55807 0.1524 0.4170 -0.28362 2011 9 4 55808 0.1534 0.4163 -0.28365 2011 9 5 55809 0.1544 0.4156 -0.28357 2011 9 6 55810 0.1553 0.4149 -0.28346 2011 9 7 55811 0.1563 0.4142 -0.28339 2011 9 8 55812 0.1572 0.4134 -0.28339 2011 9 9 55813 0.1581 0.4127 -0.28357 2011 9 10 55814 0.1589 0.4119 -0.28394 2011 9 11 55815 0.1598 0.4111 -0.28439 2011 9 12 55816 0.1606 0.4103 -0.28487 2011 9 13 55817 0.1614 0.4095 -0.28534 2011 9 14 55818 0.1623 0.4087 -0.28576 2011 9 15 55819 0.1630 0.4079 -0.28611 2011 9 16 55820 0.1638 0.4070 -0.28637 2011 9 17 55821 0.1645 0.4062 -0.28649 2011 9 18 55822 0.1653 0.4053 -0.28650 2011 9 19 55823 0.1660 0.4044 -0.28645 2011 9 20 55824 0.1667 0.4036 -0.28640 2011 9 21 55825 0.1673 0.4027 -0.28642 2011 9 22 55826 0.1680 0.4018 -0.28666 2011 9 23 55827 0.1686 0.4009 -0.28714 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) 55443 -75.52 0.25 -9.94 0.14 55444 -75.06 0.25 -10.00 0.14 55445 -74.72 0.30 -9.99 0.34 55446 -74.74 0.32 -9.78 0.34 55447 -75.06 0.32 -9.51 0.11 55448 -75.35 0.32 -9.39 0.11 55449 -75.42 0.32 -9.43 0.11 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55443 0.133 0.099 -0.092 0.140 55444 0.145 0.099 -0.087 0.140 55445 0.136 0.119 -0.079 0.340 55446 0.115 0.127 -0.066 0.340 55447 0.104 0.127 -0.059 0.110 55448 0.106 0.127 -0.038 0.110 55449 0.100 0.127 -0.036 0.110 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.