********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 12 August 2010 Vol. XXIII No. 032 ______________________________________________________________________ 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 8 6 55414 0.14966 .00009 0.46132 .00009 -0.047669 0.000013 10 8 7 55415 0.15172 .00010 0.46003 .00009 -0.047280 0.000011 10 8 8 55416 0.15390 .00010 0.45888 .00009 -0.047044 0.000006 10 8 9 55417 0.15618 .00009 0.45780 .00009 -0.047059 0.000006 10 8 10 55418 0.15850 .00009 0.45663 .00009 -0.047377 0.000007 10 8 11 55419 0.16116 .00010 0.45535 .00009 -0.047966 0.000007 10 8 12 55420 0.16404 .00010 0.45427 .00009 -0.048698 0.000007 _______________________________________________________________________ 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 = 0.0934 + 0.1078 cos A + 0.0484 sin A - 0.0479 cos C + 0.0721 sin C y = 0.3409 + 0.0412 cos A - 0.0975 sin A + 0.0721 cos C + 0.0479 sin C UT1-UTC = -0.0623 - 0.00081 (MJD - 55428) - (UT2-UT1) where A = 2*pi*(MJD-55420)/365.25 and C = 2*pi*(MJD-55420)/435. TAI-UTC(MJD 55421) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55420)**0.80 S t = 0.00025 (MJD-55420)**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 8 13 55421 0.1664 0.4533 -0.04940 2010 8 14 55422 0.1687 0.4524 -0.04995 2010 8 15 55423 0.1707 0.4515 -0.05027 2010 8 16 55424 0.1726 0.4505 -0.05033 2010 8 17 55425 0.1743 0.4494 -0.05014 2010 8 18 55426 0.1760 0.4482 -0.04978 2010 8 19 55427 0.1776 0.4470 -0.04935 2010 8 20 55428 0.1791 0.4458 -0.04892 2010 8 21 55429 0.1806 0.4445 -0.04857 2010 8 22 55430 0.1821 0.4432 -0.04835 2010 8 23 55431 0.1835 0.4419 -0.04830 2010 8 24 55432 0.1849 0.4405 -0.04840 2010 8 25 55433 0.1863 0.4391 -0.04865 2010 8 26 55434 0.1876 0.4377 -0.04899 2010 8 27 55435 0.1890 0.4363 -0.04937 2010 8 28 55436 0.1902 0.4348 -0.04973 2010 8 29 55437 0.1915 0.4334 -0.05001 2010 8 30 55438 0.1927 0.4319 -0.05016 2010 8 31 55439 0.1939 0.4304 -0.05019 2010 9 1 55440 0.1951 0.4289 -0.05012 2010 9 2 55441 0.1962 0.4273 -0.04998 2010 9 3 55442 0.1973 0.4258 -0.04984 2010 9 4 55443 0.1984 0.4242 -0.04980 2010 9 5 55444 0.1995 0.4226 -0.04997 2010 9 6 55445 0.2005 0.4210 -0.05044 2010 9 7 55446 0.2015 0.4194 -0.05120 2010 9 8 55447 0.2024 0.4177 -0.05219 2010 9 9 55448 0.2034 0.4161 -0.05329 2010 9 10 55449 0.2043 0.4144 -0.05434 2010 9 11 55450 0.2051 0.4128 -0.05519 2010 9 12 55451 0.2060 0.4111 -0.05578 2010 9 13 55452 0.2068 0.4094 -0.05612 2010 9 14 55453 0.2075 0.4077 -0.05627 2010 9 15 55454 0.2083 0.4059 -0.05631 2010 9 16 55455 0.2090 0.4042 -0.05635 2010 9 17 55456 0.2096 0.4024 -0.05644 2010 9 18 55457 0.2103 0.4007 -0.05664 2010 9 19 55458 0.2109 0.3989 -0.05697 2010 9 20 55459 0.2115 0.3972 -0.05743 2010 9 21 55460 0.2120 0.3954 -0.05803 2010 9 22 55461 0.2125 0.3936 -0.05872 2010 9 23 55462 0.2130 0.3918 -0.05947 2010 9 24 55463 0.2135 0.3900 -0.06023 2010 9 25 55464 0.2139 0.3882 -0.06095 2010 9 26 55465 0.2143 0.3863 -0.06158 2010 9 27 55466 0.2146 0.3845 -0.06212 2010 9 28 55467 0.2149 0.3827 -0.06257 2010 9 29 55468 0.2152 0.3809 -0.06296 2010 9 30 55469 0.2155 0.3790 -0.06334 2010 10 1 55470 0.2157 0.3772 -0.06381 2010 10 2 55471 0.2159 0.3754 -0.06445 2010 10 3 55472 0.2160 0.3735 -0.06534 2010 10 4 55473 0.2161 0.3717 -0.06653 2010 10 5 55474 0.2162 0.3698 -0.06799 2010 10 6 55475 0.2163 0.3680 -0.06964 2010 10 7 55476 0.2163 0.3661 -0.07134 2010 10 8 55477 0.2163 0.3643 -0.07293 2010 10 9 55478 0.2162 0.3624 -0.07431 2010 10 10 55479 0.2162 0.3606 -0.07543 2010 10 11 55480 0.2160 0.3587 -0.07632 2010 10 12 55481 0.2159 0.3569 -0.07704 2010 10 13 55482 0.2157 0.3551 -0.07769 2010 10 14 55483 0.2155 0.3532 -0.07837 2010 10 15 55484 0.2153 0.3514 -0.07912 2010 10 16 55485 0.2150 0.3496 -0.08000 2010 10 17 55486 0.2147 0.3477 -0.08101 2010 10 18 55487 0.2144 0.3459 -0.08214 2010 10 19 55488 0.2140 0.3441 -0.08336 2010 10 20 55489 0.2137 0.3423 -0.08463 2010 10 21 55490 0.2132 0.3405 -0.08590 2010 10 22 55491 0.2128 0.3387 -0.08712 2010 10 23 55492 0.2123 0.3369 -0.08826 2010 10 24 55493 0.2118 0.3351 -0.08928 2010 10 25 55494 0.2112 0.3334 -0.09018 2010 10 26 55495 0.2107 0.3316 -0.09098 2010 10 27 55496 0.2101 0.3299 -0.09173 2010 10 28 55497 0.2094 0.3281 -0.09250 2010 10 29 55498 0.2088 0.3264 -0.09338 2010 10 30 55499 0.2081 0.3247 -0.09444 2010 10 31 55500 0.2074 0.3230 -0.09572 2010 11 1 55501 0.2066 0.3213 -0.09723 2010 11 2 55502 0.2059 0.3196 -0.09891 2010 11 3 55503 0.2051 0.3179 -0.10066 2010 11 4 55504 0.2042 0.3162 -0.10235 2010 11 5 55505 0.2034 0.3146 -0.10386 2010 11 6 55506 0.2025 0.3130 -0.10513 2010 11 7 55507 0.2016 0.3113 -0.10615 2010 11 8 55508 0.2007 0.3097 -0.10697 2010 11 9 55509 0.1997 0.3081 -0.10768 2010 11 10 55510 0.1987 0.3066 -0.10838 2010 11 11 55511 0.1977 0.3050 -0.10914 2010 11 12 55512 0.1967 0.3035 -0.11000 2010 11 13 55513 0.1956 0.3019 -0.11097 2010 11 14 55514 0.1946 0.3004 -0.11205 2010 11 15 55515 0.1935 0.2989 -0.11322 2010 11 16 55516 0.1923 0.2975 -0.11443 2010 11 17 55517 0.1912 0.2960 -0.11564 2010 11 18 55518 0.1900 0.2946 -0.11681 2010 11 19 55519 0.1888 0.2932 -0.11790 2010 11 20 55520 0.1876 0.2918 -0.11888 2010 11 21 55521 0.1864 0.2904 -0.11974 2010 11 22 55522 0.1851 0.2890 -0.12048 2010 11 23 55523 0.1838 0.2877 -0.12115 2010 11 24 55524 0.1825 0.2863 -0.12182 2010 11 25 55525 0.1812 0.2850 -0.12257 2010 11 26 55526 0.1799 0.2838 -0.12349 2010 11 27 55527 0.1785 0.2825 -0.12461 2010 11 28 55528 0.1771 0.2813 -0.12594 2010 11 29 55529 0.1757 0.2800 -0.12738 2010 11 30 55530 0.1743 0.2788 -0.12889 2010 12 1 55531 0.1729 0.2777 -0.13037 2010 12 2 55532 0.1714 0.2765 -0.13171 2010 12 3 55533 0.1700 0.2754 -0.13285 2010 12 4 55534 0.1685 0.2743 -0.13376 2010 12 5 55535 0.1670 0.2732 -0.13447 2010 12 6 55536 0.1655 0.2721 -0.13505 2010 12 7 55537 0.1640 0.2711 -0.13559 2010 12 8 55538 0.1625 0.2701 -0.13616 2010 12 9 55539 0.1609 0.2691 -0.13683 2010 12 10 55540 0.1593 0.2682 -0.13760 2010 12 11 55541 0.1578 0.2672 -0.13847 2010 12 12 55542 0.1562 0.2663 -0.13943 2010 12 13 55543 0.1546 0.2654 -0.14044 2010 12 14 55544 0.1530 0.2646 -0.14145 2010 12 15 55545 0.1514 0.2637 -0.14242 2010 12 16 55546 0.1497 0.2629 -0.14332 2010 12 17 55547 0.1481 0.2621 -0.14411 2010 12 18 55548 0.1465 0.2613 -0.14477 2010 12 19 55549 0.1448 0.2606 -0.14532 2010 12 20 55550 0.1431 0.2599 -0.14579 2010 12 21 55551 0.1415 0.2592 -0.14623 2010 12 22 55552 0.1398 0.2586 -0.14675 2010 12 23 55553 0.1381 0.2579 -0.14741 2010 12 24 55554 0.1364 0.2573 -0.14827 2010 12 25 55555 0.1347 0.2567 -0.14936 2010 12 26 55556 0.1330 0.2562 -0.15062 2010 12 27 55557 0.1313 0.2557 -0.15197 2010 12 28 55558 0.1296 0.2552 -0.15328 2010 12 29 55559 0.1279 0.2547 -0.15446 2010 12 30 55560 0.1262 0.2542 -0.15545 2010 12 31 55561 0.1245 0.2538 -0.15621 2011 1 1 55562 0.1227 0.2534 -0.15677 2011 1 2 55563 0.1210 0.2531 -0.15720 2011 1 3 55564 0.1193 0.2527 -0.15757 2011 1 4 55565 0.1176 0.2524 -0.15796 2011 1 5 55566 0.1158 0.2521 -0.15844 2011 1 6 55567 0.1141 0.2519 -0.15903 2011 1 7 55568 0.1124 0.2516 -0.15975 2011 1 8 55569 0.1107 0.2514 -0.16058 2011 1 9 55570 0.1089 0.2513 -0.16147 2011 1 10 55571 0.1072 0.2511 -0.16239 2011 1 11 55572 0.1055 0.2510 -0.16330 2011 1 12 55573 0.1038 0.2509 -0.16414 2011 1 13 55574 0.1021 0.2508 -0.16489 2011 1 14 55575 0.1004 0.2508 -0.16553 2011 1 15 55576 0.0987 0.2508 -0.16606 2011 1 16 55577 0.0970 0.2508 -0.16650 2011 1 17 55578 0.0953 0.2508 -0.16692 2011 1 18 55579 0.0936 0.2509 -0.16738 2011 1 19 55580 0.0919 0.2509 -0.16798 2011 1 20 55581 0.0903 0.2511 -0.16879 2011 1 21 55582 0.0886 0.2512 -0.16986 2011 1 22 55583 0.0870 0.2514 -0.17116 2011 1 23 55584 0.0853 0.2516 -0.17260 2011 1 24 55585 0.0837 0.2518 -0.17404 2011 1 25 55586 0.0820 0.2520 -0.17538 2011 1 26 55587 0.0804 0.2523 -0.17651 2011 1 27 55588 0.0788 0.2526 -0.17740 2011 1 28 55589 0.0772 0.2529 -0.17809 2011 1 29 55590 0.0756 0.2532 -0.17862 2011 1 30 55591 0.0740 0.2536 -0.17909 2011 1 31 55592 0.0725 0.2540 -0.17956 2011 2 1 55593 0.0709 0.2544 -0.18011 2011 2 2 55594 0.0694 0.2549 -0.18078 2011 2 3 55595 0.0678 0.2553 -0.18157 2011 2 4 55596 0.0663 0.2558 -0.18249 2011 2 5 55597 0.0648 0.2563 -0.18350 2011 2 6 55598 0.0633 0.2569 -0.18455 2011 2 7 55599 0.0619 0.2574 -0.18560 2011 2 8 55600 0.0604 0.2580 -0.18660 2011 2 9 55601 0.0590 0.2586 -0.18751 2011 2 10 55602 0.0575 0.2592 -0.18832 2011 2 11 55603 0.0561 0.2599 -0.18901 2011 2 12 55604 0.0547 0.2605 -0.18960 2011 2 13 55605 0.0533 0.2612 -0.19014 2011 2 14 55606 0.0520 0.2619 -0.19068 2011 2 15 55607 0.0506 0.2627 -0.19131 2011 2 16 55608 0.0493 0.2634 -0.19212 2011 2 17 55609 0.0480 0.2642 -0.19317 2011 2 18 55610 0.0467 0.2650 -0.19449 2011 2 19 55611 0.0454 0.2658 -0.19601 2011 2 20 55612 0.0442 0.2667 -0.19763 2011 2 21 55613 0.0429 0.2675 -0.19921 2011 2 22 55614 0.0417 0.2684 -0.20063 2011 2 23 55615 0.0405 0.2693 -0.20184 2011 2 24 55616 0.0393 0.2702 -0.20286 2011 2 25 55617 0.0382 0.2711 -0.20374 2011 2 26 55618 0.0371 0.2721 -0.20456 2011 2 27 55619 0.0359 0.2730 -0.20542 2011 2 28 55620 0.0348 0.2740 -0.20636 2011 3 1 55621 0.0338 0.2750 -0.20740 2011 3 2 55622 0.0327 0.2760 -0.20858 2011 3 3 55623 0.0317 0.2771 -0.20987 2011 3 4 55624 0.0307 0.2781 -0.21125 2011 3 5 55625 0.0297 0.2792 -0.21270 2011 3 6 55626 0.0287 0.2803 -0.21416 2011 3 7 55627 0.0278 0.2813 -0.21560 2011 3 8 55628 0.0269 0.2825 -0.21699 2011 3 9 55629 0.0260 0.2836 -0.21826 2011 3 10 55630 0.0251 0.2847 -0.21941 2011 3 11 55631 0.0242 0.2859 -0.22042 2011 3 12 55632 0.0234 0.2870 -0.22133 2011 3 13 55633 0.0226 0.2882 -0.22218 2011 3 14 55634 0.0218 0.2894 -0.22308 2011 3 15 55635 0.0211 0.2906 -0.22413 2011 3 16 55636 0.0203 0.2918 -0.22542 2011 3 17 55637 0.0196 0.2930 -0.22698 2011 3 18 55638 0.0189 0.2943 -0.22878 2011 3 19 55639 0.0183 0.2955 -0.23071 2011 3 20 55640 0.0177 0.2967 -0.23263 2011 3 21 55641 0.0170 0.2980 -0.23444 2011 3 22 55642 0.0165 0.2993 -0.23604 2011 3 23 55643 0.0159 0.3006 -0.23739 2011 3 24 55644 0.0154 0.3019 -0.23845 2011 3 25 55645 0.0149 0.3032 -0.23933 2011 3 26 55646 0.0144 0.3045 -0.24014 2011 3 27 55647 0.0139 0.3058 -0.24098 2011 3 28 55648 0.0135 0.3071 -0.24194 2011 3 29 55649 0.0131 0.3084 -0.24300 2011 3 30 55650 0.0127 0.3098 -0.24417 2011 3 31 55651 0.0123 0.3111 -0.24544 2011 4 1 55652 0.0120 0.3124 -0.24682 2011 4 2 55653 0.0117 0.3138 -0.24820 2011 4 3 55654 0.0114 0.3151 -0.24952 2011 4 4 55655 0.0111 0.3165 -0.25076 2011 4 5 55656 0.0109 0.3179 -0.25186 2011 4 6 55657 0.0107 0.3192 -0.25277 2011 4 7 55658 0.0105 0.3206 -0.25357 2011 4 8 55659 0.0103 0.3220 -0.25426 2011 4 9 55660 0.0102 0.3233 -0.25490 2011 4 10 55661 0.0101 0.3247 -0.25559 2011 4 11 55662 0.0100 0.3261 -0.25642 2011 4 12 55663 0.0099 0.3275 -0.25751 2011 4 13 55664 0.0099 0.3289 -0.25889 2011 4 14 55665 0.0099 0.3302 -0.26054 2011 4 15 55666 0.0099 0.3316 -0.26242 2011 4 16 55667 0.0099 0.3330 -0.26444 2011 4 17 55668 0.0100 0.3344 -0.26651 2011 4 18 55669 0.0101 0.3357 -0.26846 2011 4 19 55670 0.0102 0.3371 -0.27016 2011 4 20 55671 0.0103 0.3385 -0.27157 2011 4 21 55672 0.0105 0.3399 -0.27276 2011 4 22 55673 0.0107 0.3412 -0.27384 2011 4 23 55674 0.0109 0.3426 -0.27490 2011 4 24 55675 0.0111 0.3440 -0.27599 2011 4 25 55676 0.0114 0.3453 -0.27710 2011 4 26 55677 0.0117 0.3467 -0.27823 2011 4 27 55678 0.0120 0.3480 -0.27937 2011 4 28 55679 0.0123 0.3494 -0.28046 2011 4 29 55680 0.0126 0.3507 -0.28154 2011 4 30 55681 0.0130 0.3520 -0.28259 2011 5 1 55682 0.0134 0.3534 -0.28359 2011 5 2 55683 0.0138 0.3547 -0.28446 2011 5 3 55684 0.0142 0.3560 -0.28515 2011 5 4 55685 0.0147 0.3573 -0.28573 2011 5 5 55686 0.0152 0.3586 -0.28624 2011 5 6 55687 0.0157 0.3599 -0.28674 2011 5 7 55688 0.0162 0.3612 -0.28722 2011 5 8 55689 0.0167 0.3625 -0.28775 2011 5 9 55690 0.0173 0.3637 -0.28839 2011 5 10 55691 0.0179 0.3650 -0.28922 2011 5 11 55692 0.0185 0.3662 -0.29030 2011 5 12 55693 0.0191 0.3675 -0.29158 2011 5 13 55694 0.0197 0.3687 -0.29299 2011 5 14 55695 0.0204 0.3699 -0.29438 2011 5 15 55696 0.0211 0.3711 -0.29562 2011 5 16 55697 0.0218 0.3723 -0.29664 2011 5 17 55698 0.0225 0.3735 -0.29744 2011 5 18 55699 0.0232 0.3747 -0.29798 2011 5 19 55700 0.0240 0.3759 -0.29828 2011 5 20 55701 0.0248 0.3770 -0.29845 2011 5 21 55702 0.0255 0.3782 -0.29860 2011 5 22 55703 0.0264 0.3793 -0.29887 2011 5 23 55704 0.0272 0.3804 -0.29921 2011 5 24 55705 0.0280 0.3815 -0.29956 2011 5 25 55706 0.0289 0.3826 -0.29993 2011 5 26 55707 0.0297 0.3837 -0.30027 2011 5 27 55708 0.0306 0.3848 -0.30057 2011 5 28 55709 0.0315 0.3858 -0.30084 2011 5 29 55710 0.0325 0.3868 -0.30097 2011 5 30 55711 0.0334 0.3879 -0.30095 2011 5 31 55712 0.0343 0.3889 -0.30077 2011 6 1 55713 0.0353 0.3899 -0.30054 2011 6 2 55714 0.0363 0.3908 -0.30033 2011 6 3 55715 0.0373 0.3918 -0.30014 2011 6 4 55716 0.0383 0.3927 -0.30004 2011 6 5 55717 0.0393 0.3937 -0.30002 2011 6 6 55718 0.0403 0.3946 -0.30014 2011 6 7 55719 0.0413 0.3955 -0.30042 2011 6 8 55720 0.0424 0.3964 -0.30085 2011 6 9 55721 0.0434 0.3972 -0.30141 2011 6 10 55722 0.0445 0.3981 -0.30197 2011 6 11 55723 0.0456 0.3989 -0.30247 2011 6 12 55724 0.0467 0.3997 -0.30284 2011 6 13 55725 0.0478 0.4005 -0.30300 2011 6 14 55726 0.0489 0.4013 -0.30295 2011 6 15 55727 0.0500 0.4021 -0.30271 2011 6 16 55728 0.0511 0.4028 -0.30238 2011 6 17 55729 0.0523 0.4035 -0.30209 2011 6 18 55730 0.0534 0.4042 -0.30195 2011 6 19 55731 0.0546 0.4049 -0.30188 2011 6 20 55732 0.0557 0.4056 -0.30187 2011 6 21 55733 0.0569 0.4063 -0.30190 2011 6 22 55734 0.0581 0.4069 -0.30193 2011 6 23 55735 0.0592 0.4075 -0.30194 2011 6 24 55736 0.0604 0.4081 -0.30189 2011 6 25 55737 0.0616 0.4087 -0.30170 2011 6 26 55738 0.0628 0.4093 -0.30136 2011 6 27 55739 0.0640 0.4098 -0.30088 2011 6 28 55740 0.0652 0.4104 -0.30030 2011 6 29 55741 0.0664 0.4109 -0.29964 2011 6 30 55742 0.0676 0.4114 -0.29905 2011 7 1 55743 0.0688 0.4118 -0.29854 2011 7 2 55744 0.0701 0.4123 -0.29817 2011 7 3 55745 0.0713 0.4127 -0.29797 2011 7 4 55746 0.0725 0.4131 -0.29799 2011 7 5 55747 0.0737 0.4135 -0.29820 2011 7 6 55748 0.0749 0.4139 -0.29858 2011 7 7 55749 0.0762 0.4143 -0.29901 2011 7 8 55750 0.0774 0.4146 -0.29935 2011 7 9 55751 0.0786 0.4149 -0.29958 2011 7 10 55752 0.0798 0.4152 -0.29961 2011 7 11 55753 0.0811 0.4155 -0.29938 2011 7 12 55754 0.0823 0.4158 -0.29889 2011 7 13 55755 0.0835 0.4160 -0.29826 2011 7 14 55756 0.0847 0.4162 -0.29765 2011 7 15 55757 0.0859 0.4164 -0.29717 2011 7 16 55758 0.0872 0.4166 -0.29680 2011 7 17 55759 0.0884 0.4168 -0.29655 2011 7 18 55760 0.0896 0.4169 -0.29636 2011 7 19 55761 0.0908 0.4171 -0.29627 2011 7 20 55762 0.0920 0.4172 -0.29624 2011 7 21 55763 0.0932 0.4173 -0.29615 2011 7 22 55764 0.0944 0.4174 -0.29596 2011 7 23 55765 0.0956 0.4174 -0.29570 2011 7 24 55766 0.0968 0.4174 -0.29531 2011 7 25 55767 0.0979 0.4175 -0.29481 2011 7 26 55768 0.0991 0.4175 -0.29426 2011 7 27 55769 0.1003 0.4175 -0.29371 2011 7 28 55770 0.1014 0.4174 -0.29319 2011 7 29 55771 0.1026 0.4174 -0.29276 2011 7 30 55772 0.1037 0.4173 -0.29251 2011 7 31 55773 0.1049 0.4172 -0.29251 2011 8 1 55774 0.1060 0.4171 -0.29278 2011 8 2 55775 0.1071 0.4170 -0.29326 2011 8 3 55776 0.1082 0.4168 -0.29383 2011 8 4 55777 0.1094 0.4167 -0.29438 2011 8 5 55778 0.1105 0.4165 -0.29479 2011 8 6 55779 0.1115 0.4163 -0.29498 2011 8 7 55780 0.1126 0.4161 -0.29496 2011 8 8 55781 0.1137 0.4159 -0.29479 2011 8 9 55782 0.1147 0.4156 -0.29454 2011 8 10 55783 0.1158 0.4154 -0.29431 2011 8 11 55784 0.1168 0.4151 -0.29418 2011 8 12 55785 0.1179 0.4148 -0.29419 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) 55401 -71.76 0.74 -9.89 0.34 55402 -71.69 0.74 -9.85 0.34 55403 -71.58 0.74 -9.66 0.34 55404 -71.52 0.74 -9.38 0.34 55405 -71.56 0.17 -9.19 0.34 55406 -71.77 0.17 -9.21 0.34 55407 -72.07 0.17 -9.38 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55401 -0.049 0.294 -0.031 0.340 55402 -0.021 0.294 -0.029 0.340 55403 -0.001 0.294 -0.021 0.340 55404 0.008 0.294 -0.001 0.340 55405 0.024 0.068 0.020 0.340 55406 0.039 0.068 0.028 0.340 55407 0.041 0.068 0.008 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.