********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 30 September 2010 Vol. XXIII No. 039 ______________________________________________________________________ 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 24 55463 0.23418 .00010 0.38011 .00009 -0.058250 0.000015 10 9 25 55464 0.23480 .00010 0.37850 .00009 -0.058720 0.000015 10 9 26 55465 0.23517 .00009 0.37671 .00009 -0.059151 0.000015 10 9 27 55466 0.23537 .00009 0.37483 .00009 -0.059476 0.000014 10 9 28 55467 0.23536 .00009 0.37270 .00009 -0.059680 0.000014 10 9 29 55468 0.23517 .00009 0.37034 .00009 -0.059806 0.000012 10 9 30 55469 0.23475 .00009 0.36809 .00009 -0.059911 0.000011 _______________________________________________________________________ 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 = 0.0938 + 0.1300 cos A - 0.0245 sin A + 0.0056 cos C + 0.0556 sin C y = 0.3443 - 0.0268 cos A - 0.1144 sin A + 0.0556 cos C - 0.0056 sin C UT1-UTC = -0.0823 - 0.00079 (MJD - 55477) - (UT2-UT1) where A = 2*pi*(MJD-55469)/365.25 and C = 2*pi*(MJD-55469)/435. TAI-UTC(MJD 55470) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55469)**0.80 S t = 0.00025 (MJD-55469)**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 10 1 55470 0.2347 0.3657 -0.06010 2010 10 2 55471 0.2344 0.3634 -0.06047 2010 10 3 55472 0.2342 0.3612 -0.06112 2010 10 4 55473 0.2341 0.3591 -0.06211 2010 10 5 55474 0.2340 0.3569 -0.06341 2010 10 6 55475 0.2339 0.3549 -0.06491 2010 10 7 55476 0.2338 0.3528 -0.06646 2010 10 8 55477 0.2337 0.3508 -0.06790 2010 10 9 55478 0.2336 0.3488 -0.06912 2010 10 10 55479 0.2334 0.3468 -0.07005 2010 10 11 55480 0.2332 0.3448 -0.07071 2010 10 12 55481 0.2329 0.3428 -0.07116 2010 10 13 55482 0.2327 0.3408 -0.07151 2010 10 14 55483 0.2324 0.3388 -0.07186 2010 10 15 55484 0.2320 0.3368 -0.07228 2010 10 16 55485 0.2317 0.3349 -0.07280 2010 10 17 55486 0.2313 0.3329 -0.07341 2010 10 18 55487 0.2308 0.3310 -0.07413 2010 10 19 55488 0.2304 0.3290 -0.07493 2010 10 20 55489 0.2299 0.3271 -0.07579 2010 10 21 55490 0.2293 0.3252 -0.07665 2010 10 22 55491 0.2288 0.3233 -0.07748 2010 10 23 55492 0.2282 0.3213 -0.07823 2010 10 24 55493 0.2275 0.3195 -0.07889 2010 10 25 55494 0.2269 0.3176 -0.07943 2010 10 26 55495 0.2262 0.3157 -0.07989 2010 10 27 55496 0.2255 0.3138 -0.08033 2010 10 28 55497 0.2247 0.3120 -0.08081 2010 10 29 55498 0.2239 0.3101 -0.08141 2010 10 30 55499 0.2231 0.3083 -0.08222 2010 10 31 55500 0.2223 0.3065 -0.08326 2010 11 1 55501 0.2214 0.3047 -0.08455 2010 11 2 55502 0.2205 0.3029 -0.08601 2010 11 3 55503 0.2195 0.3012 -0.08757 2010 11 4 55504 0.2186 0.2994 -0.08908 2010 11 5 55505 0.2176 0.2977 -0.09044 2010 11 6 55506 0.2166 0.2959 -0.09157 2010 11 7 55507 0.2155 0.2942 -0.09246 2010 11 8 55508 0.2144 0.2926 -0.09318 2010 11 9 55509 0.2133 0.2909 -0.09379 2010 11 10 55510 0.2122 0.2892 -0.09439 2010 11 11 55511 0.2110 0.2876 -0.09504 2010 11 12 55512 0.2098 0.2860 -0.09579 2010 11 13 55513 0.2086 0.2844 -0.09664 2010 11 14 55514 0.2074 0.2828 -0.09760 2010 11 15 55515 0.2061 0.2812 -0.09863 2010 11 16 55516 0.2048 0.2797 -0.09970 2010 11 17 55517 0.2035 0.2782 -0.10077 2010 11 18 55518 0.2022 0.2767 -0.10179 2010 11 19 55519 0.2008 0.2752 -0.10273 2010 11 20 55520 0.1994 0.2738 -0.10355 2010 11 21 55521 0.1980 0.2723 -0.10423 2010 11 22 55522 0.1966 0.2709 -0.10480 2010 11 23 55523 0.1952 0.2695 -0.10529 2010 11 24 55524 0.1937 0.2682 -0.10578 2010 11 25 55525 0.1922 0.2668 -0.10635 2010 11 26 55526 0.1907 0.2655 -0.10707 2010 11 27 55527 0.1892 0.2642 -0.10799 2010 11 28 55528 0.1876 0.2629 -0.10912 2010 11 29 55529 0.1860 0.2617 -0.11041 2010 11 30 55530 0.1845 0.2605 -0.11177 2010 12 1 55531 0.1828 0.2593 -0.11309 2010 12 2 55532 0.1812 0.2581 -0.11427 2010 12 3 55533 0.1796 0.2570 -0.11525 2010 12 4 55534 0.1779 0.2558 -0.11599 2010 12 5 55535 0.1762 0.2547 -0.11654 2010 12 6 55536 0.1746 0.2537 -0.11697 2010 12 7 55537 0.1729 0.2526 -0.11736 2010 12 8 55538 0.1711 0.2516 -0.11780 2010 12 9 55539 0.1694 0.2506 -0.11833 2010 12 10 55540 0.1677 0.2497 -0.11898 2010 12 11 55541 0.1659 0.2487 -0.11974 2010 12 12 55542 0.1641 0.2478 -0.12059 2010 12 13 55543 0.1623 0.2469 -0.12151 2010 12 14 55544 0.1605 0.2461 -0.12244 2010 12 15 55545 0.1587 0.2453 -0.12335 2010 12 16 55546 0.1569 0.2445 -0.12419 2010 12 17 55547 0.1551 0.2437 -0.12493 2010 12 18 55548 0.1532 0.2430 -0.12556 2010 12 19 55549 0.1514 0.2423 -0.12609 2010 12 20 55550 0.1495 0.2416 -0.12654 2010 12 21 55551 0.1477 0.2409 -0.12697 2010 12 22 55552 0.1458 0.2403 -0.12747 2010 12 23 55553 0.1439 0.2397 -0.12812 2010 12 24 55554 0.1421 0.2391 -0.12898 2010 12 25 55555 0.1402 0.2386 -0.13004 2010 12 26 55556 0.1383 0.2381 -0.13128 2010 12 27 55557 0.1364 0.2376 -0.13260 2010 12 28 55558 0.1345 0.2372 -0.13389 2010 12 29 55559 0.1326 0.2367 -0.13505 2010 12 30 55560 0.1306 0.2363 -0.13602 2010 12 31 55561 0.1287 0.2360 -0.13677 2011 1 1 55562 0.1268 0.2356 -0.13732 2011 1 2 55563 0.1249 0.2353 -0.13774 2011 1 3 55564 0.1230 0.2351 -0.13811 2011 1 4 55565 0.1211 0.2348 -0.13850 2011 1 5 55566 0.1192 0.2346 -0.13898 2011 1 6 55567 0.1172 0.2344 -0.13958 2011 1 7 55568 0.1153 0.2343 -0.14029 2011 1 8 55569 0.1134 0.2341 -0.14112 2011 1 9 55570 0.1115 0.2340 -0.14200 2011 1 10 55571 0.1096 0.2340 -0.14291 2011 1 11 55572 0.1077 0.2339 -0.14380 2011 1 12 55573 0.1058 0.2339 -0.14462 2011 1 13 55574 0.1039 0.2339 -0.14534 2011 1 14 55575 0.1020 0.2340 -0.14595 2011 1 15 55576 0.1001 0.2341 -0.14645 2011 1 16 55577 0.0982 0.2342 -0.14685 2011 1 17 55578 0.0964 0.2343 -0.14715 2011 1 18 55579 0.0945 0.2345 -0.14749 2011 1 19 55580 0.0926 0.2347 -0.14797 2011 1 20 55581 0.0908 0.2349 -0.14867 2011 1 21 55582 0.0889 0.2351 -0.14962 2011 1 22 55583 0.0871 0.2354 -0.15079 2011 1 23 55584 0.0853 0.2357 -0.15211 2011 1 24 55585 0.0835 0.2360 -0.15343 2011 1 25 55586 0.0817 0.2364 -0.15465 2011 1 26 55587 0.0799 0.2368 -0.15565 2011 1 27 55588 0.0781 0.2372 -0.15643 2011 1 28 55589 0.0763 0.2376 -0.15699 2011 1 29 55590 0.0745 0.2381 -0.15741 2011 1 30 55591 0.0728 0.2386 -0.15775 2011 1 31 55592 0.0711 0.2391 -0.15811 2011 2 1 55593 0.0693 0.2397 -0.15855 2011 2 2 55594 0.0676 0.2402 -0.15910 2011 2 3 55595 0.0659 0.2408 -0.15979 2011 2 4 55596 0.0643 0.2415 -0.16061 2011 2 5 55597 0.0626 0.2421 -0.16152 2011 2 6 55598 0.0609 0.2428 -0.16248 2011 2 7 55599 0.0593 0.2435 -0.16344 2011 2 8 55600 0.0577 0.2442 -0.16436 2011 2 9 55601 0.0561 0.2450 -0.16520 2011 2 10 55602 0.0545 0.2457 -0.16594 2011 2 11 55603 0.0530 0.2465 -0.16658 2011 2 12 55604 0.0514 0.2474 -0.16713 2011 2 13 55605 0.0499 0.2482 -0.16764 2011 2 14 55606 0.0484 0.2491 -0.16818 2011 2 15 55607 0.0469 0.2500 -0.16882 2011 2 16 55608 0.0454 0.2509 -0.16966 2011 2 17 55609 0.0440 0.2518 -0.17076 2011 2 18 55610 0.0425 0.2528 -0.17215 2011 2 19 55611 0.0411 0.2537 -0.17375 2011 2 20 55612 0.0397 0.2547 -0.17545 2011 2 21 55613 0.0384 0.2558 -0.17710 2011 2 22 55614 0.0370 0.2568 -0.17857 2011 2 23 55615 0.0357 0.2579 -0.17979 2011 2 24 55616 0.0344 0.2589 -0.18076 2011 2 25 55617 0.0331 0.2600 -0.18155 2011 2 26 55618 0.0318 0.2612 -0.18224 2011 2 27 55619 0.0306 0.2623 -0.18291 2011 2 28 55620 0.0294 0.2635 -0.18364 2011 3 1 55621 0.0282 0.2646 -0.18448 2011 3 2 55622 0.0270 0.2658 -0.18544 2011 3 3 55623 0.0259 0.2670 -0.18653 2011 3 4 55624 0.0248 0.2683 -0.18772 2011 3 5 55625 0.0237 0.2695 -0.18897 2011 3 6 55626 0.0226 0.2708 -0.19024 2011 3 7 55627 0.0216 0.2721 -0.19148 2011 3 8 55628 0.0205 0.2733 -0.19265 2011 3 9 55629 0.0196 0.2746 -0.19372 2011 3 10 55630 0.0186 0.2760 -0.19468 2011 3 11 55631 0.0176 0.2773 -0.19554 2011 3 12 55632 0.0167 0.2787 -0.19634 2011 3 13 55633 0.0158 0.2800 -0.19713 2011 3 14 55634 0.0150 0.2814 -0.19798 2011 3 15 55635 0.0141 0.2828 -0.19897 2011 3 16 55636 0.0133 0.2842 -0.20020 2011 3 17 55637 0.0125 0.2856 -0.20169 2011 3 18 55638 0.0118 0.2870 -0.20345 2011 3 19 55639 0.0111 0.2885 -0.20537 2011 3 20 55640 0.0104 0.2899 -0.20733 2011 3 21 55641 0.0097 0.2914 -0.20918 2011 3 22 55642 0.0090 0.2928 -0.21080 2011 3 23 55643 0.0084 0.2943 -0.21215 2011 3 24 55644 0.0078 0.2958 -0.21327 2011 3 25 55645 0.0073 0.2973 -0.21424 2011 3 26 55646 0.0067 0.2988 -0.21514 2011 3 27 55647 0.0062 0.3003 -0.21608 2011 3 28 55648 0.0057 0.3018 -0.21709 2011 3 29 55649 0.0053 0.3033 -0.21820 2011 3 30 55650 0.0049 0.3048 -0.21942 2011 3 31 55651 0.0045 0.3064 -0.22073 2011 4 1 55652 0.0041 0.3079 -0.22209 2011 4 2 55653 0.0037 0.3095 -0.22348 2011 4 3 55654 0.0034 0.3110 -0.22484 2011 4 4 55655 0.0032 0.3126 -0.22614 2011 4 5 55656 0.0029 0.3141 -0.22734 2011 4 6 55657 0.0027 0.3157 -0.22844 2011 4 7 55658 0.0025 0.3172 -0.22945 2011 4 8 55659 0.0023 0.3188 -0.23038 2011 4 9 55660 0.0022 0.3204 -0.23129 2011 4 10 55661 0.0020 0.3219 -0.23224 2011 4 11 55662 0.0019 0.3235 -0.23328 2011 4 12 55663 0.0019 0.3251 -0.23449 2011 4 13 55664 0.0019 0.3267 -0.23591 2011 4 14 55665 0.0019 0.3282 -0.23756 2011 4 15 55666 0.0019 0.3298 -0.23941 2011 4 16 55667 0.0019 0.3314 -0.24135 2011 4 17 55668 0.0020 0.3329 -0.24323 2011 4 18 55669 0.0021 0.3345 -0.24493 2011 4 19 55670 0.0022 0.3361 -0.24635 2011 4 20 55671 0.0024 0.3376 -0.24747 2011 4 21 55672 0.0026 0.3392 -0.24836 2011 4 22 55673 0.0028 0.3408 -0.24910 2011 4 23 55674 0.0030 0.3423 -0.24978 2011 4 24 55675 0.0033 0.3439 -0.25049 2011 4 25 55676 0.0036 0.3454 -0.25124 2011 4 26 55677 0.0039 0.3469 -0.25203 2011 4 27 55678 0.0043 0.3485 -0.25287 2011 4 28 55679 0.0046 0.3500 -0.25375 2011 4 29 55680 0.0050 0.3515 -0.25463 2011 4 30 55681 0.0055 0.3530 -0.25550 2011 5 1 55682 0.0059 0.3545 -0.25631 2011 5 2 55683 0.0064 0.3560 -0.25702 2011 5 3 55684 0.0069 0.3575 -0.25760 2011 5 4 55685 0.0074 0.3590 -0.25804 2011 5 5 55686 0.0080 0.3605 -0.25841 2011 5 6 55687 0.0085 0.3620 -0.25880 2011 5 7 55688 0.0091 0.3634 -0.25926 2011 5 8 55689 0.0097 0.3649 -0.25986 2011 5 9 55690 0.0104 0.3663 -0.26063 2011 5 10 55691 0.0111 0.3677 -0.26157 2011 5 11 55692 0.0117 0.3691 -0.26268 2011 5 12 55693 0.0125 0.3706 -0.26400 2011 5 13 55694 0.0132 0.3719 -0.26545 2011 5 14 55695 0.0139 0.3733 -0.26695 2011 5 15 55696 0.0147 0.3747 -0.26834 2011 5 16 55697 0.0155 0.3761 -0.26952 2011 5 17 55698 0.0164 0.3774 -0.27051 2011 5 18 55699 0.0172 0.3787 -0.27128 2011 5 19 55700 0.0181 0.3801 -0.27190 2011 5 20 55701 0.0189 0.3814 -0.27244 2011 5 21 55702 0.0199 0.3827 -0.27306 2011 5 22 55703 0.0208 0.3839 -0.27376 2011 5 23 55704 0.0217 0.3852 -0.27455 2011 5 24 55705 0.0227 0.3865 -0.27549 2011 5 25 55706 0.0237 0.3877 -0.27652 2011 5 26 55707 0.0247 0.3889 -0.27756 2011 5 27 55708 0.0257 0.3901 -0.27857 2011 5 28 55709 0.0267 0.3913 -0.27948 2011 5 29 55710 0.0278 0.3925 -0.28026 2011 5 30 55711 0.0289 0.3936 -0.28082 2011 5 31 55712 0.0299 0.3948 -0.28121 2011 6 1 55713 0.0311 0.3959 -0.28143 2011 6 2 55714 0.0322 0.3970 -0.28154 2011 6 3 55715 0.0333 0.3981 -0.28159 2011 6 4 55716 0.0345 0.3992 -0.28168 2011 6 5 55717 0.0356 0.4002 -0.28187 2011 6 6 55718 0.0368 0.4012 -0.28226 2011 6 7 55719 0.0380 0.4023 -0.28291 2011 6 8 55720 0.0392 0.4033 -0.28382 2011 6 9 55721 0.0404 0.4042 -0.28487 2011 6 10 55722 0.0417 0.4052 -0.28596 2011 6 11 55723 0.0429 0.4061 -0.28698 2011 6 12 55724 0.0442 0.4071 -0.28786 2011 6 13 55725 0.0455 0.4080 -0.28847 2011 6 14 55726 0.0468 0.4089 -0.28883 2011 6 15 55727 0.0481 0.4097 -0.28897 2011 6 16 55728 0.0494 0.4106 -0.28891 2011 6 17 55729 0.0507 0.4114 -0.28884 2011 6 18 55730 0.0520 0.4122 -0.28885 2011 6 19 55731 0.0534 0.4130 -0.28891 2011 6 20 55732 0.0547 0.4137 -0.28908 2011 6 21 55733 0.0561 0.4145 -0.28934 2011 6 22 55734 0.0574 0.4152 -0.28967 2011 6 23 55735 0.0588 0.4159 -0.28994 2011 6 24 55736 0.0602 0.4166 -0.29012 2011 6 25 55737 0.0616 0.4173 -0.29016 2011 6 26 55738 0.0630 0.4179 -0.29002 2011 6 27 55739 0.0644 0.4185 -0.28976 2011 6 28 55740 0.0658 0.4191 -0.28942 2011 6 29 55741 0.0672 0.4197 -0.28900 2011 6 30 55742 0.0686 0.4202 -0.28848 2011 7 1 55743 0.0700 0.4208 -0.28798 2011 7 2 55744 0.0714 0.4213 -0.28757 2011 7 3 55745 0.0729 0.4218 -0.28734 2011 7 4 55746 0.0743 0.4222 -0.28736 2011 7 5 55747 0.0757 0.4227 -0.28755 2011 7 6 55748 0.0772 0.4231 -0.28787 2011 7 7 55749 0.0786 0.4235 -0.28823 2011 7 8 55750 0.0800 0.4239 -0.28858 2011 7 9 55751 0.0815 0.4243 -0.28875 2011 7 10 55752 0.0829 0.4246 -0.28870 2011 7 11 55753 0.0844 0.4249 -0.28844 2011 7 12 55754 0.0858 0.4252 -0.28797 2011 7 13 55755 0.0873 0.4255 -0.28735 2011 7 14 55756 0.0887 0.4258 -0.28673 2011 7 15 55757 0.0902 0.4260 -0.28615 2011 7 16 55758 0.0916 0.4262 -0.28569 2011 7 17 55759 0.0930 0.4264 -0.28536 2011 7 18 55760 0.0945 0.4266 -0.28518 2011 7 19 55761 0.0959 0.4267 -0.28514 2011 7 20 55762 0.0973 0.4268 -0.28518 2011 7 21 55763 0.0988 0.4269 -0.28522 2011 7 22 55764 0.1002 0.4270 -0.28519 2011 7 23 55765 0.1016 0.4271 -0.28511 2011 7 24 55766 0.1030 0.4271 -0.28502 2011 7 25 55767 0.1044 0.4271 -0.28485 2011 7 26 55768 0.1059 0.4271 -0.28461 2011 7 27 55769 0.1073 0.4271 -0.28430 2011 7 28 55770 0.1086 0.4271 -0.28399 2011 7 29 55771 0.1100 0.4270 -0.28377 2011 7 30 55772 0.1114 0.4269 -0.28374 2011 7 31 55773 0.1128 0.4268 -0.28391 2011 8 1 55774 0.1142 0.4267 -0.28425 2011 8 2 55775 0.1155 0.4265 -0.28470 2011 8 3 55776 0.1169 0.4264 -0.28517 2011 8 4 55777 0.1182 0.4262 -0.28552 2011 8 5 55778 0.1195 0.4260 -0.28570 2011 8 6 55779 0.1209 0.4258 -0.28569 2011 8 7 55780 0.1222 0.4255 -0.28548 2011 8 8 55781 0.1235 0.4253 -0.28511 2011 8 9 55782 0.1248 0.4250 -0.28458 2011 8 10 55783 0.1261 0.4247 -0.28407 2011 8 11 55784 0.1273 0.4244 -0.28365 2011 8 12 55785 0.1286 0.4240 -0.28340 2011 8 13 55786 0.1299 0.4237 -0.28327 2011 8 14 55787 0.1311 0.4233 -0.28326 2011 8 15 55788 0.1323 0.4229 -0.28331 2011 8 16 55789 0.1335 0.4225 -0.28343 2011 8 17 55790 0.1347 0.4221 -0.28359 2011 8 18 55791 0.1359 0.4216 -0.28372 2011 8 19 55792 0.1371 0.4212 -0.28378 2011 8 20 55793 0.1383 0.4207 -0.28372 2011 8 21 55794 0.1394 0.4202 -0.28352 2011 8 22 55795 0.1406 0.4197 -0.28323 2011 8 23 55796 0.1417 0.4191 -0.28291 2011 8 24 55797 0.1428 0.4186 -0.28258 2011 8 25 55798 0.1439 0.4180 -0.28225 2011 8 26 55799 0.1450 0.4175 -0.28198 2011 8 27 55800 0.1460 0.4169 -0.28191 2011 8 28 55801 0.1471 0.4163 -0.28214 2011 8 29 55802 0.1481 0.4156 -0.28258 2011 8 30 55803 0.1491 0.4150 -0.28314 2011 8 31 55804 0.1501 0.4144 -0.28370 2011 9 1 55805 0.1511 0.4137 -0.28414 2011 9 2 55806 0.1521 0.4130 -0.28439 2011 9 3 55807 0.1530 0.4123 -0.28445 2011 9 4 55808 0.1540 0.4116 -0.28429 2011 9 5 55809 0.1549 0.4109 -0.28398 2011 9 6 55810 0.1558 0.4102 -0.28363 2011 9 7 55811 0.1567 0.4094 -0.28340 2011 9 8 55812 0.1575 0.4087 -0.28335 2011 9 9 55813 0.1584 0.4079 -0.28349 2011 9 10 55814 0.1592 0.4071 -0.28380 2011 9 11 55815 0.1600 0.4063 -0.28418 2011 9 12 55816 0.1608 0.4055 -0.28460 2011 9 13 55817 0.1616 0.4047 -0.28501 2011 9 14 55818 0.1623 0.4039 -0.28538 2011 9 15 55819 0.1631 0.4031 -0.28570 2011 9 16 55820 0.1638 0.4022 -0.28592 2011 9 17 55821 0.1645 0.4014 -0.28606 2011 9 18 55822 0.1652 0.4005 -0.28615 2011 9 19 55823 0.1659 0.3997 -0.28620 2011 9 20 55824 0.1665 0.3988 -0.28625 2011 9 21 55825 0.1671 0.3979 -0.28633 2011 9 22 55826 0.1677 0.3970 -0.28651 2011 9 23 55827 0.1683 0.3961 -0.28692 2011 9 24 55828 0.1689 0.3952 -0.28765 2011 9 25 55829 0.1694 0.3943 -0.28861 2011 9 26 55830 0.1700 0.3933 -0.28976 2011 9 27 55831 0.1705 0.3924 -0.29100 2011 9 28 55832 0.1710 0.3915 -0.29220 2011 9 29 55833 0.1714 0.3905 -0.29326 2011 9 30 55834 0.1719 0.3896 -0.29410 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) 55450 -75.58 0.16 -9.38 0.34 55451 -75.83 0.22 -9.19 0.34 55452 -76.16 0.22 -9.04 0.34 55453 -76.15 0.21 -9.15 0.34 55454 -75.67 0.24 -9.43 0.34 55455 -75.09 0.24 -9.57 0.34 55456 -74.84 0.24 -9.44 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55450 0.040 0.064 -0.046 0.340 55451 0.045 0.088 -0.072 0.340 55452 0.053 0.088 -0.047 0.340 55453 0.049 0.084 -0.007 0.340 55454 0.053 0.095 -0.013 0.340 55455 0.086 0.095 -0.044 0.340 55456 0.121 0.095 -0.045 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.