********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 19 May 2016 Vol. XXIX No. 020 ______________________________________________________________________ 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 = -0.2 seconds beginning 19 May 2016 at 0000 UTC Beginning 1 July 2015: TAI-UTC = 36.000 000 seconds *********************************************************************** * * * Please note that daily and Bulletin A EOP data can be obtained from * * the primary Earth Orientation (EO) servers at: * * http://maia.usno.navy.mil ftp://maia.usno.navy.mil * * and from the backup EO server at: * * http://toshi.nofs.navy.mil ftp://toshi.nofs.navy.mil * * * * An additional backup mirror of the daily and Bulletin A EOP data * * is now hosted by NASA's Archive of Space Geodesy Data server at: * * ftp://cddis.gsfc.nasa.gov/pub/products/iers * * Daily EOP data will be uploaded here at 18:00 UTC, and * * Bulletin A EOP data should by available by 20:00 UTC. * * * * Distribution statement A. Approved for public release: * * distribution unlimited. * * * *********************************************************************** ________________________________________________________________________ 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 16 5 13 57521 0.05641 .00009 0.48732 .00009 -0.156279 0.000011 16 5 14 57522 0.05847 .00009 0.48816 .00009 -0.157818 0.000011 16 5 15 57523 0.06052 .00009 0.48875 .00009 -0.159464 0.000013 16 5 16 57524 0.06258 .00009 0.48915 .00009 -0.161193 0.000020 16 5 17 57525 0.06457 .00009 0.48965 .00009 -0.162958 0.000020 16 5 18 57526 0.06640 .00009 0.49034 .00009 -0.164680 0.000022 16 5 19 57527 0.06807 .00009 0.49116 .00009 -0.166396 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 = 0.1062 - 0.0741 cos A + 0.1201 sin A + 0.0389 cos C + 0.0158 sin C y = 0.3630 + 0.1108 cos A + 0.0706 sin A + 0.0158 cos C - 0.0389 sin C UT1-UTC = -0.1424 - 0.00146 (MJD - 57535) - (UT2-UT1) where A = 2*pi*(MJD-57527)/365.25 and C = 2*pi*(MJD-57527)/435. TAI-UTC(MJD 57528) = 36.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57527)**0.80 S t = 0.00025 (MJD-57527)**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) 2016 5 20 57528 0.0699 0.4918 -0.16799 2016 5 21 57529 0.0717 0.4926 -0.16949 2016 5 22 57530 0.0737 0.4932 -0.17094 2016 5 23 57531 0.0758 0.4937 -0.17235 2016 5 24 57532 0.0780 0.4941 -0.17370 2016 5 25 57533 0.0803 0.4945 -0.17500 2016 5 26 57534 0.0825 0.4949 -0.17628 2016 5 27 57535 0.0848 0.4952 -0.17761 2016 5 28 57536 0.0870 0.4955 -0.17906 2016 5 29 57537 0.0892 0.4958 -0.18068 2016 5 30 57538 0.0915 0.4961 -0.18246 2016 5 31 57539 0.0937 0.4963 -0.18433 2016 6 1 57540 0.0960 0.4965 -0.18626 2016 6 2 57541 0.0982 0.4967 -0.18815 2016 6 3 57542 0.1006 0.4968 -0.18992 2016 6 4 57543 0.1029 0.4969 -0.19147 2016 6 5 57544 0.1052 0.4970 -0.19281 2016 6 6 57545 0.1075 0.4970 -0.19397 2016 6 7 57546 0.1098 0.4970 -0.19502 2016 6 8 57547 0.1121 0.4970 -0.19601 2016 6 9 57548 0.1144 0.4969 -0.19698 2016 6 10 57549 0.1167 0.4968 -0.19794 2016 6 11 57550 0.1190 0.4966 -0.19891 2016 6 12 57551 0.1213 0.4965 -0.19986 2016 6 13 57552 0.1236 0.4962 -0.20079 2016 6 14 57553 0.1258 0.4960 -0.20168 2016 6 15 57554 0.1281 0.4957 -0.20251 2016 6 16 57555 0.1304 0.4954 -0.20325 2016 6 17 57556 0.1327 0.4950 -0.20389 2016 6 18 57557 0.1349 0.4946 -0.20443 2016 6 19 57558 0.1372 0.4942 -0.20489 2016 6 20 57559 0.1394 0.4937 -0.20528 2016 6 21 57560 0.1416 0.4932 -0.20564 2016 6 22 57561 0.1439 0.4927 -0.20601 2016 6 23 57562 0.1461 0.4922 -0.20643 2016 6 24 57563 0.1483 0.4916 -0.20696 2016 6 25 57564 0.1505 0.4909 -0.20763 2016 6 26 57565 0.1527 0.4903 -0.20845 2016 6 27 57566 0.1548 0.4896 -0.20939 2016 6 28 57567 0.1570 0.4888 -0.21040 2016 6 29 57568 0.1591 0.4881 -0.21143 2016 6 30 57569 0.1613 0.4873 -0.21241 2016 7 1 57570 0.1634 0.4864 -0.21328 2016 7 2 57571 0.1655 0.4856 -0.21402 2016 7 3 57572 0.1676 0.4847 -0.21463 2016 7 4 57573 0.1696 0.4837 -0.21516 2016 7 5 57574 0.1717 0.4828 -0.21565 2016 7 6 57575 0.1737 0.4818 -0.21616 2016 7 7 57576 0.1757 0.4808 -0.21671 2016 7 8 57577 0.1777 0.4797 -0.21732 2016 7 9 57578 0.1797 0.4786 -0.21796 2016 7 10 57579 0.1816 0.4775 -0.21863 2016 7 11 57580 0.1836 0.4764 -0.21928 2016 7 12 57581 0.1855 0.4752 -0.21990 2016 7 13 57582 0.1874 0.4740 -0.22046 2016 7 14 57583 0.1893 0.4728 -0.22095 2016 7 15 57584 0.1911 0.4715 -0.22135 2016 7 16 57585 0.1929 0.4702 -0.22167 2016 7 17 57586 0.1947 0.4689 -0.22192 2016 7 18 57587 0.1965 0.4676 -0.22215 2016 7 19 57588 0.1983 0.4662 -0.22240 2016 7 20 57589 0.2000 0.4648 -0.22271 2016 7 21 57590 0.2017 0.4634 -0.22313 2016 7 22 57591 0.2034 0.4619 -0.22370 2016 7 23 57592 0.2050 0.4605 -0.22443 2016 7 24 57593 0.2067 0.4589 -0.22528 2016 7 25 57594 0.2083 0.4574 -0.22620 2016 7 26 57595 0.2098 0.4559 -0.22714 2016 7 27 57596 0.2114 0.4543 -0.22804 2016 7 28 57597 0.2129 0.4527 -0.22885 2016 7 29 57598 0.2144 0.4511 -0.22954 2016 7 30 57599 0.2158 0.4494 -0.23012 2016 7 31 57600 0.2172 0.4478 -0.23063 2016 8 1 57601 0.2186 0.4461 -0.23112 2016 8 2 57602 0.2200 0.4443 -0.23163 2016 8 3 57603 0.2213 0.4426 -0.23221 2016 8 4 57604 0.2226 0.4409 -0.23288 2016 8 5 57605 0.2239 0.4391 -0.23362 2016 8 6 57606 0.2252 0.4373 -0.23442 2016 8 7 57607 0.2264 0.4355 -0.23525 2016 8 8 57608 0.2275 0.4336 -0.23608 2016 8 9 57609 0.2287 0.4318 -0.23689 2016 8 10 57610 0.2298 0.4299 -0.23764 2016 8 11 57611 0.2309 0.4280 -0.23833 2016 8 12 57612 0.2319 0.4261 -0.23896 2016 8 13 57613 0.2329 0.4242 -0.23954 2016 8 14 57614 0.2339 0.4223 -0.24010 2016 8 15 57615 0.2348 0.4203 -0.24067 2016 8 16 57616 0.2357 0.4184 -0.24132 2016 8 17 57617 0.2366 0.4164 -0.24207 2016 8 18 57618 0.2374 0.4144 -0.24299 2016 8 19 57619 0.2382 0.4124 -0.24409 2016 8 20 57620 0.2390 0.4104 -0.24536 2016 8 21 57621 0.2397 0.4084 -0.24675 2016 8 22 57622 0.2404 0.4063 -0.24819 2016 8 23 57623 0.2410 0.4043 -0.24960 2016 8 24 57624 0.2416 0.4022 -0.25091 2016 8 25 57625 0.2422 0.4001 -0.25209 2016 8 26 57626 0.2428 0.3981 -0.25315 2016 8 27 57627 0.2433 0.3960 -0.25410 2016 8 28 57628 0.2437 0.3939 -0.25501 2016 8 29 57629 0.2442 0.3918 -0.25592 2016 8 30 57630 0.2445 0.3897 -0.25688 2016 8 31 57631 0.2449 0.3875 -0.25791 2016 9 1 57632 0.2452 0.3854 -0.25903 2016 9 2 57633 0.2455 0.3833 -0.26021 2016 9 3 57634 0.2457 0.3811 -0.26142 2016 9 4 57635 0.2459 0.3790 -0.26263 2016 9 5 57636 0.2461 0.3769 -0.26382 2016 9 6 57637 0.2462 0.3747 -0.26496 2016 9 7 57638 0.2463 0.3726 -0.26604 2016 9 8 57639 0.2464 0.3704 -0.26705 2016 9 9 57640 0.2464 0.3683 -0.26801 2016 9 10 57641 0.2463 0.3661 -0.26894 2016 9 11 57642 0.2463 0.3640 -0.26987 2016 9 12 57643 0.2462 0.3618 -0.27086 2016 9 13 57644 0.2460 0.3597 -0.27195 2016 9 14 57645 0.2459 0.3575 -0.27318 2016 9 15 57646 0.2456 0.3554 -0.27461 2016 9 16 57647 0.2454 0.3533 -0.27624 2016 9 17 57648 0.2451 0.3511 -0.27803 2016 9 18 57649 0.2448 0.3490 -0.27993 2016 9 19 57650 0.2444 0.3469 -0.28183 2016 9 20 57651 0.2440 0.3448 -0.28365 2016 9 21 57652 0.2435 0.3426 -0.28533 2016 9 22 57653 0.2430 0.3405 -0.28687 2016 9 23 57654 0.2425 0.3384 -0.28828 2016 9 24 57655 0.2420 0.3363 -0.28962 2016 9 25 57656 0.2414 0.3343 -0.29095 2016 9 26 57657 0.2407 0.3322 -0.29231 2016 9 27 57658 0.2401 0.3301 -0.29375 2016 9 28 57659 0.2394 0.3281 -0.29526 2016 9 29 57660 0.2386 0.3260 -0.29684 2016 9 30 57661 0.2379 0.3240 -0.29846 2016 10 1 57662 0.2370 0.3219 -0.30011 2016 10 2 57663 0.2362 0.3199 -0.30173 2016 10 3 57664 0.2353 0.3179 -0.30331 2016 10 4 57665 0.2344 0.3159 -0.30484 2016 10 5 57666 0.2334 0.3140 -0.30629 2016 10 6 57667 0.2324 0.3120 -0.30767 2016 10 7 57668 0.2314 0.3101 -0.30901 2016 10 8 57669 0.2304 0.3082 -0.31033 2016 10 9 57670 0.2293 0.3062 -0.31167 2016 10 10 57671 0.2282 0.3043 -0.31309 2016 10 11 57672 0.2270 0.3025 -0.31463 2016 10 12 57673 0.2258 0.3006 -0.31633 2016 10 13 57674 0.2246 0.2988 -0.31823 2016 10 14 57675 0.2233 0.2969 -0.32032 2016 10 15 57676 0.2220 0.2951 -0.32255 2016 10 16 57677 0.2207 0.2934 -0.32486 2016 10 17 57678 0.2194 0.2916 -0.32712 2016 10 18 57679 0.2180 0.2898 -0.32928 2016 10 19 57680 0.2166 0.2881 -0.33127 2016 10 20 57681 0.2151 0.2864 -0.33310 2016 10 21 57682 0.2137 0.2847 -0.33482 2016 10 22 57683 0.2122 0.2831 -0.33649 2016 10 23 57684 0.2106 0.2814 -0.33816 2016 10 24 57685 0.2091 0.2798 -0.33987 2016 10 25 57686 0.2075 0.2782 -0.34163 2016 10 26 57687 0.2059 0.2767 -0.34345 2016 10 27 57688 0.2042 0.2751 -0.34531 2016 10 28 57689 0.2026 0.2736 -0.34718 2016 10 29 57690 0.2009 0.2721 -0.34903 2016 10 30 57691 0.1992 0.2707 -0.35083 2016 10 31 57692 0.1974 0.2692 -0.35256 2016 11 1 57693 0.1957 0.2678 -0.35422 2016 11 2 57694 0.1939 0.2664 -0.35579 2016 11 3 57695 0.1921 0.2651 -0.35728 2016 11 4 57696 0.1902 0.2638 -0.35874 2016 11 5 57697 0.1883 0.2625 -0.36018 2016 11 6 57698 0.1865 0.2612 -0.36166 2016 11 7 57699 0.1846 0.2599 -0.36323 2016 11 8 57700 0.1826 0.2587 -0.36493 2016 11 9 57701 0.1807 0.2575 -0.36679 2016 11 10 57702 0.1787 0.2564 -0.36884 2016 11 11 57703 0.1767 0.2553 -0.37105 2016 11 12 57704 0.1747 0.2542 -0.37337 2016 11 13 57705 0.1727 0.2531 -0.37572 2016 11 14 57706 0.1707 0.2521 -0.37801 2016 11 15 57707 0.1686 0.2511 -0.38018 2016 11 16 57708 0.1665 0.2501 -0.38220 2016 11 17 57709 0.1644 0.2492 -0.38409 2016 11 18 57710 0.1623 0.2483 -0.38591 2016 11 19 57711 0.1602 0.2474 -0.38773 2016 11 20 57712 0.1580 0.2465 -0.38959 2016 11 21 57713 0.1559 0.2457 -0.39152 2016 11 22 57714 0.1537 0.2450 -0.39353 2016 11 23 57715 0.1516 0.2442 -0.39560 2016 11 24 57716 0.1494 0.2435 -0.39771 2016 11 25 57717 0.1472 0.2428 -0.39982 2016 11 26 57718 0.1449 0.2422 -0.40190 2016 11 27 57719 0.1427 0.2416 -0.40389 2016 11 28 57720 0.1405 0.2410 -0.40575 2016 11 29 57721 0.1382 0.2405 -0.40747 2016 11 30 57722 0.1360 0.2400 -0.40903 2016 12 1 57723 0.1337 0.2395 -0.41045 2016 12 2 57724 0.1315 0.2391 -0.41177 2016 12 3 57725 0.1292 0.2387 -0.41303 2016 12 4 57726 0.1269 0.2383 -0.41430 2016 12 5 57727 0.1246 0.2380 -0.41561 2016 12 6 57728 0.1223 0.2377 -0.41701 2016 12 7 57729 0.1201 0.2374 -0.41852 2016 12 8 57730 0.1178 0.2372 -0.42015 2016 12 9 57731 0.1155 0.2370 -0.42189 2016 12 10 57732 0.1132 0.2368 -0.42368 2016 12 11 57733 0.1109 0.2367 -0.42547 2016 12 12 57734 0.1086 0.2366 -0.42719 2016 12 13 57735 0.1062 0.2366 -0.42878 2016 12 14 57736 0.1039 0.2366 -0.43023 2016 12 15 57737 0.1016 0.2366 -0.43157 2016 12 16 57738 0.0993 0.2366 -0.43285 2016 12 17 57739 0.0970 0.2367 -0.43413 2016 12 18 57740 0.0947 0.2368 -0.43545 2016 12 19 57741 0.0925 0.2370 -0.43680 2016 12 20 57742 0.0902 0.2372 -0.43820 2016 12 21 57743 0.0879 0.2374 -0.43964 2016 12 22 57744 0.0856 0.2377 -0.44108 2016 12 23 57745 0.0833 0.2380 -0.44250 2016 12 24 57746 0.0811 0.2383 -0.44387 2016 12 25 57747 0.0788 0.2387 -0.44520 2016 12 26 57748 0.0766 0.2391 -0.44644 2016 12 27 57749 0.0743 0.2396 -0.44759 2016 12 28 57750 0.0721 0.2400 -0.44865 2016 12 29 57751 0.0699 0.2405 -0.44967 2016 12 30 57752 0.0676 0.2411 -0.45068 2016 12 31 57753 0.0654 0.2417 -0.45170 2017 1 1 57754 0.0633 0.2423 -0.45281 2017 1 2 57755 0.0611 0.2429 -0.45409 2017 1 3 57756 0.0589 0.2436 -0.45560 2017 1 4 57757 0.0568 0.2443 -0.45730 2017 1 5 57758 0.0546 0.2451 -0.45903 2017 1 6 57759 0.0525 0.2458 -0.46072 2017 1 7 57760 0.0504 0.2466 -0.46236 2017 1 8 57761 0.0483 0.2475 -0.46403 2017 1 9 57762 0.0462 0.2484 -0.46568 2017 1 10 57763 0.0441 0.2493 -0.46715 2017 1 11 57764 0.0421 0.2502 -0.46851 2017 1 12 57765 0.0401 0.2512 -0.46978 2017 1 13 57766 0.0381 0.2522 -0.47109 2017 1 14 57767 0.0361 0.2532 -0.47239 2017 1 15 57768 0.0341 0.2543 -0.47379 2017 1 16 57769 0.0322 0.2554 -0.47525 2017 1 17 57770 0.0302 0.2565 -0.47672 2017 1 18 57771 0.0283 0.2576 -0.47810 2017 1 19 57772 0.0264 0.2588 -0.47944 2017 1 20 57773 0.0246 0.2600 -0.48070 2017 1 21 57774 0.0227 0.2613 -0.48195 2017 1 22 57775 0.0209 0.2625 -0.48318 2017 1 23 57776 0.0191 0.2638 -0.48435 2017 1 24 57777 0.0174 0.2652 -0.48549 2017 1 25 57778 0.0156 0.2665 -0.48663 2017 1 26 57779 0.0139 0.2679 -0.48779 2017 1 27 57780 0.0122 0.2693 -0.48895 2017 1 28 57781 0.0105 0.2707 -0.49018 2017 1 29 57782 0.0089 0.2722 -0.49158 2017 1 30 57783 0.0073 0.2737 -0.49319 2017 1 31 57784 0.0057 0.2752 -0.49495 2017 2 1 57785 0.0041 0.2767 -0.49684 2017 2 2 57786 0.0026 0.2783 -0.49874 2017 2 3 57787 0.0011 0.2798 -0.50064 2017 2 4 57788 -0.0004 0.2814 -0.50244 2017 2 5 57789 -0.0018 0.2831 -0.50417 2017 2 6 57790 -0.0033 0.2847 -0.50583 2017 2 7 57791 -0.0046 0.2864 -0.50740 2017 2 8 57792 -0.0060 0.2881 -0.50894 2017 2 9 57793 -0.0073 0.2898 -0.51053 2017 2 10 57794 -0.0086 0.2915 -0.51211 2017 2 11 57795 -0.0099 0.2933 -0.51373 2017 2 12 57796 -0.0111 0.2950 -0.51553 2017 2 13 57797 -0.0123 0.2968 -0.51744 2017 2 14 57798 -0.0135 0.2986 -0.51940 2017 2 15 57799 -0.0146 0.3004 -0.52139 2017 2 16 57800 -0.0157 0.3023 -0.52335 2017 2 17 57801 -0.0168 0.3042 -0.52525 2017 2 18 57802 -0.0178 0.3060 -0.52706 2017 2 19 57803 -0.0188 0.3079 -0.52883 2017 2 20 57804 -0.0198 0.3098 -0.53049 2017 2 21 57805 -0.0207 0.3118 -0.53207 2017 2 22 57806 -0.0216 0.3137 -0.53362 2017 2 23 57807 -0.0225 0.3156 -0.53510 2017 2 24 57808 -0.0233 0.3176 -0.53666 2017 2 25 57809 -0.0241 0.3196 -0.53836 2017 2 26 57810 -0.0248 0.3216 -0.54024 2017 2 27 57811 -0.0255 0.3236 -0.54233 2017 2 28 57812 -0.0262 0.3256 -0.54454 2017 3 1 57813 -0.0269 0.3276 -0.54682 2017 3 2 57814 -0.0275 0.3296 -0.54911 2017 3 3 57815 -0.0281 0.3317 -0.55138 2017 3 4 57816 -0.0286 0.3337 -0.55351 2017 3 5 57817 -0.0291 0.3358 -0.55547 2017 3 6 57818 -0.0296 0.3379 -0.55728 2017 3 7 57819 -0.0300 0.3399 -0.55907 2017 3 8 57820 -0.0304 0.3420 -0.56089 2017 3 9 57821 -0.0307 0.3441 -0.56277 2017 3 10 57822 -0.0311 0.3462 -0.56476 2017 3 11 57823 -0.0313 0.3483 -0.56688 2017 3 12 57824 -0.0316 0.3504 -0.56902 2017 3 13 57825 -0.0318 0.3525 -0.57124 2017 3 14 57826 -0.0320 0.3546 -0.57344 2017 3 15 57827 -0.0321 0.3567 -0.57560 2017 3 16 57828 -0.0322 0.3588 -0.57773 2017 3 17 57829 -0.0322 0.3609 -0.57975 2017 3 18 57830 -0.0322 0.3631 -0.58165 2017 3 19 57831 -0.0322 0.3652 -0.58352 2017 3 20 57832 -0.0322 0.3673 -0.58524 2017 3 21 57833 -0.0321 0.3694 -0.58693 2017 3 22 57834 -0.0319 0.3715 -0.58861 2017 3 23 57835 -0.0318 0.3736 -0.59033 2017 3 24 57836 -0.0316 0.3757 -0.59215 2017 3 25 57837 -0.0313 0.3779 -0.59407 2017 3 26 57838 -0.0310 0.3800 -0.59616 2017 3 27 57839 -0.0307 0.3821 -0.59836 2017 3 28 57840 -0.0304 0.3841 -0.60075 2017 3 29 57841 -0.0300 0.3862 -0.60319 2017 3 30 57842 -0.0296 0.3883 -0.60555 2017 3 31 57843 -0.0291 0.3904 -0.60786 2017 4 1 57844 -0.0286 0.3925 -0.60993 2017 4 2 57845 -0.0281 0.3945 -0.61190 2017 4 3 57846 -0.0275 0.3966 -0.61378 2017 4 4 57847 -0.0269 0.3986 -0.61561 2017 4 5 57848 -0.0262 0.4006 -0.61740 2017 4 6 57849 -0.0256 0.4027 -0.61929 2017 4 7 57850 -0.0249 0.4047 -0.62129 2017 4 8 57851 -0.0241 0.4067 -0.62341 2017 4 9 57852 -0.0233 0.4087 -0.62556 2017 4 10 57853 -0.0225 0.4107 -0.62776 2017 4 11 57854 -0.0217 0.4126 -0.62996 2017 4 12 57855 -0.0208 0.4146 -0.63220 2017 4 13 57856 -0.0198 0.4165 -0.63442 2017 4 14 57857 -0.0189 0.4184 -0.63657 2017 4 15 57858 -0.0179 0.4204 -0.63860 2017 4 16 57859 -0.0169 0.4223 -0.64048 2017 4 17 57860 -0.0158 0.4241 -0.64235 2017 4 18 57861 -0.0148 0.4260 -0.64408 2017 4 19 57862 -0.0136 0.4278 -0.64590 2017 4 20 57863 -0.0125 0.4297 -0.64770 2017 4 21 57864 -0.0113 0.4315 -0.64957 2017 4 22 57865 -0.0101 0.4333 -0.65154 2017 4 23 57866 -0.0089 0.4351 -0.65368 2017 4 24 57867 -0.0076 0.4368 -0.65597 2017 4 25 57868 -0.0063 0.4386 -0.65839 2017 4 26 57869 -0.0050 0.4403 -0.66085 2017 4 27 57870 -0.0036 0.4420 -0.66326 2017 4 28 57871 -0.0022 0.4436 -0.66549 2017 4 29 57872 -0.0008 0.4453 -0.66748 2017 4 30 57873 0.0006 0.4469 -0.66928 2017 5 1 57874 0.0021 0.4485 -0.67092 2017 5 2 57875 0.0036 0.4501 -0.67242 2017 5 3 57876 0.0051 0.4517 -0.67395 2017 5 4 57877 0.0067 0.4532 -0.67548 2017 5 5 57878 0.0083 0.4548 -0.67695 2017 5 6 57879 0.0099 0.4562 -0.67839 2017 5 7 57880 0.0115 0.4577 -0.67973 2017 5 8 57881 0.0131 0.4592 -0.68097 2017 5 9 57882 0.0148 0.4606 -0.68226 2017 5 10 57883 0.0165 0.4620 -0.68332 2017 5 11 57884 0.0182 0.4633 -0.68430 2017 5 12 57885 0.0200 0.4647 -0.68523 2017 5 13 57886 0.0217 0.4660 -0.68606 2017 5 14 57887 0.0235 0.4673 -0.68681 2017 5 15 57888 0.0253 0.4685 -0.68755 2017 5 16 57889 0.0272 0.4698 -0.68839 2017 5 17 57890 0.0290 0.4710 -0.68931 2017 5 18 57891 0.0309 0.4721 -0.69027 2017 5 19 57892 0.0328 0.4733 -0.69133 These predictions are based on all announced leap seconds. 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 (2010).