********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 21 October 2010 Vol. XXIII No. 042 ______________________________________________________________________ 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 10 15 55484 0.23436 .00010 0.33390 .00010 -0.075200 0.000010 10 10 16 55485 0.23412 .00010 0.33241 .00010 -0.076102 0.000010 10 10 17 55486 0.23360 .00009 0.33076 .00009 -0.077090 0.000009 10 10 18 55487 0.23325 .00009 0.32889 .00009 -0.078186 0.000009 10 10 19 55488 0.23293 .00009 0.32694 .00010 -0.079370 0.000008 10 10 20 55489 0.23246 .00009 0.32498 .00009 -0.080608 0.000008 10 10 21 55490 0.23187 .00009 0.32298 .00009 -0.081846 0.000008 _______________________________________________________________________ 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 = 0.0920 + 0.1158 cos A - 0.0592 sin A + 0.0246 cos C + 0.0424 sin C y = 0.3419 - 0.0575 cos A - 0.0995 sin A + 0.0424 cos C - 0.0246 sin C UT1-UTC = -0.0995 - 0.00078 (MJD - 55498) - (UT2-UT1) where A = 2*pi*(MJD-55490)/365.25 and C = 2*pi*(MJD-55490)/435. TAI-UTC(MJD 55491) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55490)**0.80 S t = 0.00025 (MJD-55490)**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 22 55491 0.2313 0.3210 -0.08301 2010 10 23 55492 0.2307 0.3190 -0.08402 2010 10 24 55493 0.2301 0.3170 -0.08487 2010 10 25 55494 0.2294 0.3150 -0.08557 2010 10 26 55495 0.2287 0.3130 -0.08617 2010 10 27 55496 0.2280 0.3111 -0.08672 2010 10 28 55497 0.2273 0.3092 -0.08728 2010 10 29 55498 0.2265 0.3073 -0.08795 2010 10 30 55499 0.2257 0.3054 -0.08879 2010 10 31 55500 0.2249 0.3035 -0.08987 2010 11 1 55501 0.2241 0.3017 -0.09120 2010 11 2 55502 0.2232 0.2998 -0.09273 2010 11 3 55503 0.2223 0.2980 -0.09439 2010 11 4 55504 0.2213 0.2962 -0.09601 2010 11 5 55505 0.2203 0.2944 -0.09749 2010 11 6 55506 0.2193 0.2926 -0.09876 2010 11 7 55507 0.2183 0.2908 -0.09981 2010 11 8 55508 0.2173 0.2891 -0.10069 2010 11 9 55509 0.2162 0.2873 -0.10148 2010 11 10 55510 0.2151 0.2856 -0.10225 2010 11 11 55511 0.2139 0.2839 -0.10306 2010 11 12 55512 0.2127 0.2823 -0.10392 2010 11 13 55513 0.2115 0.2806 -0.10486 2010 11 14 55514 0.2103 0.2790 -0.10586 2010 11 15 55515 0.2091 0.2773 -0.10691 2010 11 16 55516 0.2078 0.2757 -0.10798 2010 11 17 55517 0.2065 0.2742 -0.10901 2010 11 18 55518 0.2052 0.2726 -0.10997 2010 11 19 55519 0.2038 0.2711 -0.11083 2010 11 20 55520 0.2024 0.2696 -0.11155 2010 11 21 55521 0.2011 0.2681 -0.11214 2010 11 22 55522 0.1996 0.2666 -0.11261 2010 11 23 55523 0.1982 0.2651 -0.11301 2010 11 24 55524 0.1967 0.2637 -0.11341 2010 11 25 55525 0.1952 0.2623 -0.11389 2010 11 26 55526 0.1937 0.2609 -0.11454 2010 11 27 55527 0.1922 0.2596 -0.11539 2010 11 28 55528 0.1907 0.2583 -0.11646 2010 11 29 55529 0.1891 0.2570 -0.11770 2010 11 30 55530 0.1875 0.2557 -0.11901 2010 12 1 55531 0.1859 0.2544 -0.12031 2010 12 2 55532 0.1843 0.2532 -0.12147 2010 12 3 55533 0.1826 0.2520 -0.12243 2010 12 4 55534 0.1810 0.2508 -0.12317 2010 12 5 55535 0.1793 0.2497 -0.12371 2010 12 6 55536 0.1776 0.2486 -0.12413 2010 12 7 55537 0.1759 0.2475 -0.12452 2010 12 8 55538 0.1742 0.2464 -0.12495 2010 12 9 55539 0.1725 0.2453 -0.12547 2010 12 10 55540 0.1707 0.2443 -0.12610 2010 12 11 55541 0.1689 0.2433 -0.12685 2010 12 12 55542 0.1672 0.2424 -0.12767 2010 12 13 55543 0.1654 0.2414 -0.12855 2010 12 14 55544 0.1636 0.2405 -0.12942 2010 12 15 55545 0.1618 0.2397 -0.13025 2010 12 16 55546 0.1599 0.2388 -0.13101 2010 12 17 55547 0.1581 0.2380 -0.13165 2010 12 18 55548 0.1562 0.2372 -0.13216 2010 12 19 55549 0.1544 0.2365 -0.13257 2010 12 20 55550 0.1525 0.2357 -0.13289 2010 12 21 55551 0.1506 0.2350 -0.13319 2010 12 22 55552 0.1488 0.2343 -0.13355 2010 12 23 55553 0.1469 0.2337 -0.13405 2010 12 24 55554 0.1450 0.2331 -0.13476 2010 12 25 55555 0.1431 0.2325 -0.13569 2010 12 26 55556 0.1412 0.2319 -0.13679 2010 12 27 55557 0.1392 0.2314 -0.13797 2010 12 28 55558 0.1373 0.2309 -0.13912 2010 12 29 55559 0.1354 0.2305 -0.14014 2010 12 30 55560 0.1335 0.2300 -0.14096 2010 12 31 55561 0.1315 0.2296 -0.14156 2011 1 1 55562 0.1296 0.2292 -0.14196 2011 1 2 55563 0.1277 0.2289 -0.14221 2011 1 3 55564 0.1257 0.2286 -0.14241 2011 1 4 55565 0.1238 0.2283 -0.14263 2011 1 5 55566 0.1219 0.2280 -0.14294 2011 1 6 55567 0.1199 0.2278 -0.14336 2011 1 7 55568 0.1180 0.2276 -0.14392 2011 1 8 55569 0.1160 0.2275 -0.14458 2011 1 9 55570 0.1141 0.2273 -0.14532 2011 1 10 55571 0.1122 0.2272 -0.14609 2011 1 11 55572 0.1102 0.2271 -0.14684 2011 1 12 55573 0.1083 0.2271 -0.14754 2011 1 13 55574 0.1064 0.2271 -0.14816 2011 1 14 55575 0.1045 0.2271 -0.14867 2011 1 15 55576 0.1026 0.2271 -0.14908 2011 1 16 55577 0.1006 0.2272 -0.14943 2011 1 17 55578 0.0987 0.2273 -0.14975 2011 1 18 55579 0.0968 0.2274 -0.15012 2011 1 19 55580 0.0950 0.2276 -0.15065 2011 1 20 55581 0.0931 0.2278 -0.15139 2011 1 21 55582 0.0912 0.2280 -0.15240 2011 1 22 55583 0.0893 0.2283 -0.15364 2011 1 23 55584 0.0875 0.2285 -0.15502 2011 1 24 55585 0.0856 0.2288 -0.15641 2011 1 25 55586 0.0838 0.2292 -0.15768 2011 1 26 55587 0.0819 0.2295 -0.15875 2011 1 27 55588 0.0801 0.2299 -0.15957 2011 1 28 55589 0.0783 0.2303 -0.16018 2011 1 29 55590 0.0765 0.2308 -0.16065 2011 1 30 55591 0.0747 0.2313 -0.16105 2011 1 31 55592 0.0729 0.2318 -0.16147 2011 2 1 55593 0.0712 0.2323 -0.16196 2011 2 2 55594 0.0694 0.2328 -0.16257 2011 2 3 55595 0.0677 0.2334 -0.16332 2011 2 4 55596 0.0660 0.2340 -0.16419 2011 2 5 55597 0.0643 0.2346 -0.16516 2011 2 6 55598 0.0626 0.2353 -0.16618 2011 2 7 55599 0.0609 0.2360 -0.16713 2011 2 8 55600 0.0593 0.2367 -0.16804 2011 2 9 55601 0.0576 0.2374 -0.16887 2011 2 10 55602 0.0560 0.2382 -0.16960 2011 2 11 55603 0.0544 0.2390 -0.17022 2011 2 12 55604 0.0528 0.2398 -0.17076 2011 2 13 55605 0.0512 0.2406 -0.17125 2011 2 14 55606 0.0497 0.2415 -0.17176 2011 2 15 55607 0.0481 0.2424 -0.17237 2011 2 16 55608 0.0466 0.2433 -0.17318 2011 2 17 55609 0.0451 0.2442 -0.17426 2011 2 18 55610 0.0437 0.2451 -0.17561 2011 2 19 55611 0.0422 0.2461 -0.17717 2011 2 20 55612 0.0408 0.2471 -0.17883 2011 2 21 55613 0.0393 0.2481 -0.18044 2011 2 22 55614 0.0380 0.2491 -0.18187 2011 2 23 55615 0.0366 0.2502 -0.18304 2011 2 24 55616 0.0352 0.2513 -0.18396 2011 2 25 55617 0.0339 0.2524 -0.18470 2011 2 26 55618 0.0326 0.2535 -0.18533 2011 2 27 55619 0.0313 0.2546 -0.18595 2011 2 28 55620 0.0301 0.2558 -0.18662 2011 3 1 55621 0.0288 0.2570 -0.18739 2011 3 2 55622 0.0276 0.2581 -0.18829 2011 3 3 55623 0.0264 0.2594 -0.18930 2011 3 4 55624 0.0252 0.2606 -0.19042 2011 3 5 55625 0.0241 0.2618 -0.19159 2011 3 6 55626 0.0230 0.2631 -0.19279 2011 3 7 55627 0.0219 0.2644 -0.19395 2011 3 8 55628 0.0208 0.2657 -0.19503 2011 3 9 55629 0.0198 0.2670 -0.19602 2011 3 10 55630 0.0188 0.2683 -0.19691 2011 3 11 55631 0.0178 0.2696 -0.19769 2011 3 12 55632 0.0168 0.2710 -0.19842 2011 3 13 55633 0.0159 0.2724 -0.19913 2011 3 14 55634 0.0150 0.2738 -0.19991 2011 3 15 55635 0.0141 0.2751 -0.20084 2011 3 16 55636 0.0132 0.2766 -0.20199 2011 3 17 55637 0.0124 0.2780 -0.20343 2011 3 18 55638 0.0116 0.2794 -0.20512 2011 3 19 55639 0.0108 0.2809 -0.20699 2011 3 20 55640 0.0101 0.2823 -0.20890 2011 3 21 55641 0.0093 0.2838 -0.21070 2011 3 22 55642 0.0086 0.2853 -0.21227 2011 3 23 55643 0.0080 0.2867 -0.21358 2011 3 24 55644 0.0073 0.2882 -0.21466 2011 3 25 55645 0.0067 0.2898 -0.21558 2011 3 26 55646 0.0061 0.2913 -0.21646 2011 3 27 55647 0.0056 0.2928 -0.21736 2011 3 28 55648 0.0050 0.2943 -0.21834 2011 3 29 55649 0.0045 0.2959 -0.21943 2011 3 30 55650 0.0041 0.2974 -0.22063 2011 3 31 55651 0.0036 0.2990 -0.22191 2011 4 1 55652 0.0032 0.3005 -0.22326 2011 4 2 55653 0.0028 0.3021 -0.22463 2011 4 3 55654 0.0024 0.3037 -0.22597 2011 4 4 55655 0.0021 0.3052 -0.22724 2011 4 5 55656 0.0018 0.3068 -0.22840 2011 4 6 55657 0.0015 0.3084 -0.22945 2011 4 7 55658 0.0013 0.3100 -0.23038 2011 4 8 55659 0.0011 0.3116 -0.23123 2011 4 9 55660 0.0009 0.3131 -0.23204 2011 4 10 55661 0.0007 0.3147 -0.23286 2011 4 11 55662 0.0006 0.3163 -0.23378 2011 4 12 55663 0.0005 0.3179 -0.23487 2011 4 13 55664 0.0004 0.3195 -0.23619 2011 4 14 55665 0.0003 0.3211 -0.23774 2011 4 15 55666 0.0003 0.3227 -0.23950 2011 4 16 55667 0.0003 0.3243 -0.24135 2011 4 17 55668 0.0003 0.3259 -0.24316 2011 4 18 55669 0.0004 0.3275 -0.24480 2011 4 19 55670 0.0005 0.3291 -0.24619 2011 4 20 55671 0.0006 0.3307 -0.24732 2011 4 21 55672 0.0008 0.3323 -0.24824 2011 4 22 55673 0.0009 0.3339 -0.24905 2011 4 23 55674 0.0011 0.3354 -0.24984 2011 4 24 55675 0.0013 0.3370 -0.25067 2011 4 25 55676 0.0016 0.3386 -0.25160 2011 4 26 55677 0.0019 0.3402 -0.25262 2011 4 27 55678 0.0022 0.3417 -0.25374 2011 4 28 55679 0.0025 0.3433 -0.25492 2011 4 29 55680 0.0029 0.3448 -0.25617 2011 4 30 55681 0.0032 0.3464 -0.25742 2011 5 1 55682 0.0037 0.3479 -0.25866 2011 5 2 55683 0.0041 0.3495 -0.25983 2011 5 3 55684 0.0045 0.3510 -0.26091 2011 5 4 55685 0.0050 0.3525 -0.26187 2011 5 5 55686 0.0055 0.3540 -0.26271 2011 5 6 55687 0.0061 0.3555 -0.26345 2011 5 7 55688 0.0066 0.3570 -0.26414 2011 5 8 55689 0.0072 0.3585 -0.26486 2011 5 9 55690 0.0078 0.3600 -0.26568 2011 5 10 55691 0.0084 0.3614 -0.26666 2011 5 11 55692 0.0091 0.3629 -0.26786 2011 5 12 55693 0.0098 0.3643 -0.26924 2011 5 13 55694 0.0105 0.3658 -0.27076 2011 5 14 55695 0.0112 0.3672 -0.27229 2011 5 15 55696 0.0119 0.3686 -0.27371 2011 5 16 55697 0.0127 0.3700 -0.27491 2011 5 17 55698 0.0135 0.3714 -0.27586 2011 5 18 55699 0.0143 0.3727 -0.27656 2011 5 19 55700 0.0151 0.3741 -0.27708 2011 5 20 55701 0.0160 0.3754 -0.27753 2011 5 21 55702 0.0169 0.3768 -0.27798 2011 5 22 55703 0.0178 0.3781 -0.27848 2011 5 23 55704 0.0187 0.3794 -0.27906 2011 5 24 55705 0.0196 0.3807 -0.27968 2011 5 25 55706 0.0206 0.3819 -0.28032 2011 5 26 55707 0.0215 0.3832 -0.28093 2011 5 27 55708 0.0225 0.3844 -0.28149 2011 5 28 55709 0.0235 0.3857 -0.28199 2011 5 29 55710 0.0246 0.3869 -0.28243 2011 5 30 55711 0.0256 0.3881 -0.28279 2011 5 31 55712 0.0267 0.3893 -0.28300 2011 6 1 55713 0.0278 0.3904 -0.28300 2011 6 2 55714 0.0289 0.3916 -0.28282 2011 6 3 55715 0.0300 0.3927 -0.28258 2011 6 4 55716 0.0311 0.3938 -0.28233 2011 6 5 55717 0.0322 0.3949 -0.28209 2011 6 6 55718 0.0334 0.3960 -0.28200 2011 6 7 55719 0.0346 0.3970 -0.28211 2011 6 8 55720 0.0358 0.3981 -0.28244 2011 6 9 55721 0.0370 0.3991 -0.28294 2011 6 10 55722 0.0382 0.4001 -0.28347 2011 6 11 55723 0.0394 0.4011 -0.28396 2011 6 12 55724 0.0407 0.4020 -0.28429 2011 6 13 55725 0.0419 0.4030 -0.28435 2011 6 14 55726 0.0432 0.4039 -0.28415 2011 6 15 55727 0.0445 0.4048 -0.28376 2011 6 16 55728 0.0458 0.4057 -0.28336 2011 6 17 55729 0.0471 0.4065 -0.28313 2011 6 18 55730 0.0484 0.4074 -0.28302 2011 6 19 55731 0.0497 0.4082 -0.28307 2011 6 20 55732 0.0510 0.4090 -0.28330 2011 6 21 55733 0.0524 0.4098 -0.28354 2011 6 22 55734 0.0537 0.4106 -0.28375 2011 6 23 55735 0.0551 0.4113 -0.28399 2011 6 24 55736 0.0565 0.4120 -0.28419 2011 6 25 55737 0.0579 0.4127 -0.28433 2011 6 26 55738 0.0592 0.4134 -0.28436 2011 6 27 55739 0.0606 0.4141 -0.28424 2011 6 28 55740 0.0620 0.4147 -0.28406 2011 6 29 55741 0.0634 0.4153 -0.28381 2011 6 30 55742 0.0648 0.4159 -0.28351 2011 7 1 55743 0.0663 0.4165 -0.28324 2011 7 2 55744 0.0677 0.4170 -0.28312 2011 7 3 55745 0.0691 0.4175 -0.28317 2011 7 4 55746 0.0705 0.4180 -0.28343 2011 7 5 55747 0.0720 0.4185 -0.28396 2011 7 6 55748 0.0734 0.4190 -0.28466 2011 7 7 55749 0.0748 0.4194 -0.28539 2011 7 8 55750 0.0763 0.4199 -0.28605 2011 7 9 55751 0.0777 0.4203 -0.28654 2011 7 10 55752 0.0792 0.4206 -0.28680 2011 7 11 55753 0.0806 0.4210 -0.28678 2011 7 12 55754 0.0821 0.4213 -0.28656 2011 7 13 55755 0.0835 0.4216 -0.28621 2011 7 14 55756 0.0850 0.4219 -0.28582 2011 7 15 55757 0.0864 0.4222 -0.28547 2011 7 16 55758 0.0879 0.4224 -0.28521 2011 7 17 55759 0.0893 0.4226 -0.28508 2011 7 18 55760 0.0907 0.4228 -0.28507 2011 7 19 55761 0.0922 0.4230 -0.28520 2011 7 20 55762 0.0936 0.4232 -0.28542 2011 7 21 55763 0.0951 0.4233 -0.28566 2011 7 22 55764 0.0965 0.4234 -0.28584 2011 7 23 55765 0.0979 0.4235 -0.28592 2011 7 24 55766 0.0994 0.4236 -0.28592 2011 7 25 55767 0.1008 0.4236 -0.28577 2011 7 26 55768 0.1022 0.4237 -0.28550 2011 7 27 55769 0.1036 0.4237 -0.28512 2011 7 28 55770 0.1050 0.4237 -0.28467 2011 7 29 55771 0.1064 0.4236 -0.28429 2011 7 30 55772 0.1078 0.4236 -0.28409 2011 7 31 55773 0.1092 0.4235 -0.28408 2011 8 1 55774 0.1106 0.4234 -0.28431 2011 8 2 55775 0.1120 0.4233 -0.28476 2011 8 3 55776 0.1133 0.4231 -0.28533 2011 8 4 55777 0.1147 0.4230 -0.28584 2011 8 5 55778 0.1161 0.4228 -0.28618 2011 8 6 55779 0.1174 0.4226 -0.28627 2011 8 7 55780 0.1187 0.4224 -0.28609 2011 8 8 55781 0.1201 0.4222 -0.28576 2011 8 9 55782 0.1214 0.4219 -0.28538 2011 8 10 55783 0.1227 0.4216 -0.28499 2011 8 11 55784 0.1240 0.4213 -0.28461 2011 8 12 55785 0.1253 0.4210 -0.28432 2011 8 13 55786 0.1265 0.4207 -0.28413 2011 8 14 55787 0.1278 0.4203 -0.28408 2011 8 15 55788 0.1291 0.4200 -0.28417 2011 8 16 55789 0.1303 0.4196 -0.28429 2011 8 17 55790 0.1315 0.4192 -0.28441 2011 8 18 55791 0.1328 0.4188 -0.28449 2011 8 19 55792 0.1340 0.4183 -0.28454 2011 8 20 55793 0.1351 0.4179 -0.28448 2011 8 21 55794 0.1363 0.4174 -0.28429 2011 8 22 55795 0.1375 0.4169 -0.28401 2011 8 23 55796 0.1386 0.4164 -0.28365 2011 8 24 55797 0.1398 0.4159 -0.28324 2011 8 25 55798 0.1409 0.4153 -0.28290 2011 8 26 55799 0.1420 0.4148 -0.28270 2011 8 27 55800 0.1431 0.4142 -0.28273 2011 8 28 55801 0.1442 0.4136 -0.28304 2011 8 29 55802 0.1453 0.4130 -0.28364 2011 8 30 55803 0.1463 0.4124 -0.28449 2011 8 31 55804 0.1473 0.4117 -0.28544 2011 9 1 55805 0.1484 0.4111 -0.28633 2011 9 2 55806 0.1494 0.4104 -0.28705 2011 9 3 55807 0.1504 0.4097 -0.28759 2011 9 4 55808 0.1513 0.4091 -0.28804 2011 9 5 55809 0.1523 0.4083 -0.28840 2011 9 6 55810 0.1532 0.4076 -0.28874 2011 9 7 55811 0.1541 0.4069 -0.28910 2011 9 8 55812 0.1550 0.4062 -0.28953 2011 9 9 55813 0.1559 0.4054 -0.29008 2011 9 10 55814 0.1568 0.4046 -0.29076 2011 9 11 55815 0.1577 0.4039 -0.29153 2011 9 12 55816 0.1585 0.4031 -0.29230 2011 9 13 55817 0.1593 0.4023 -0.29301 2011 9 14 55818 0.1601 0.4014 -0.29361 2011 9 15 55819 0.1609 0.4006 -0.29407 2011 9 16 55820 0.1616 0.3998 -0.29440 2011 9 17 55821 0.1624 0.3989 -0.29465 2011 9 18 55822 0.1631 0.3981 -0.29483 2011 9 19 55823 0.1638 0.3972 -0.29495 2011 9 20 55824 0.1645 0.3963 -0.29500 2011 9 21 55825 0.1652 0.3955 -0.29513 2011 9 22 55826 0.1658 0.3946 -0.29542 2011 9 23 55827 0.1665 0.3937 -0.29595 2011 9 24 55828 0.1671 0.3928 -0.29671 2011 9 25 55829 0.1677 0.3918 -0.29773 2011 9 26 55830 0.1682 0.3909 -0.29893 2011 9 27 55831 0.1688 0.3900 -0.30028 2011 9 28 55832 0.1693 0.3891 -0.30165 2011 9 29 55833 0.1699 0.3881 -0.30290 2011 9 30 55834 0.1704 0.3872 -0.30394 2011 10 1 55835 0.1708 0.3862 -0.30474 2011 10 2 55836 0.1713 0.3852 -0.30533 2011 10 3 55837 0.1717 0.3843 -0.30583 2011 10 4 55838 0.1721 0.3833 -0.30636 2011 10 5 55839 0.1726 0.3823 -0.30695 2011 10 6 55840 0.1729 0.3813 -0.30755 2011 10 7 55841 0.1733 0.3804 -0.30819 2011 10 8 55842 0.1736 0.3794 -0.30887 2011 10 9 55843 0.1740 0.3784 -0.30965 2011 10 10 55844 0.1743 0.3774 -0.31044 2011 10 11 55845 0.1746 0.3764 -0.31114 2011 10 12 55846 0.1748 0.3754 -0.31174 2011 10 13 55847 0.1751 0.3744 -0.31222 2011 10 14 55848 0.1753 0.3734 -0.31259 2011 10 15 55849 0.1755 0.3724 -0.31290 2011 10 16 55850 0.1757 0.3714 -0.31311 2011 10 17 55851 0.1759 0.3703 -0.31327 2011 10 18 55852 0.1760 0.3693 -0.31343 2011 10 19 55853 0.1761 0.3683 -0.31375 2011 10 20 55854 0.1763 0.3673 -0.31429 2011 10 21 55855 0.1763 0.3663 -0.31508 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) 55471 -74.21 0.42 -9.66 0.34 55472 -73.81 0.20 -9.73 0.14 55473 -73.52 0.20 -9.65 0.14 55474 -73.56 0.11 -9.37 0.15 55475 -73.87 0.12 -9.07 0.13 55476 -74.07 0.12 -8.96 0.13 55477 -73.90 0.12 -9.08 0.13 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55471 0.250 0.167 -0.136 0.340 55472 0.249 0.080 -0.134 0.140 55473 0.245 0.080 -0.124 0.140 55474 0.238 0.044 -0.107 0.150 55475 0.227 0.048 -0.109 0.130 55476 0.216 0.048 -0.097 0.130 55477 0.206 0.048 -0.094 0.130 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.