********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 2 June 2016 Vol. XXIX No. 022 ______________________________________________________________________ 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 27 57535 0.08087 .00009 0.49607 .00009 -0.177946 0.000019 16 5 28 57536 0.08284 .00009 0.49652 .00009 -0.179410 0.000020 16 5 29 57537 0.08511 .00009 0.49667 .00009 -0.181010 0.000021 16 5 30 57538 0.08780 .00009 0.49657 .00009 -0.182758 0.000020 16 5 31 57539 0.09042 .00009 0.49654 .00009 -0.184567 0.000019 16 6 1 57540 0.09283 .00009 0.49667 .00009 -0.186369 0.000018 16 6 2 57541 0.09514 .00010 0.49693 .00009 -0.188232 0.000014 IERS Final Values MJD x y UT1-UTC " " s 16 4 2 57480 -0.0081 0.4227 -0.08425 16 4 3 57481 -0.0076 0.4241 -0.08616 16 4 4 57482 -0.0065 0.4258 -0.08815 16 4 5 57483 -0.0048 0.4279 -0.09029 16 4 6 57484 -0.0025 0.4299 -0.09257 16 4 7 57485 -0.0007 0.4322 -0.09494 16 4 8 57486 0.0007 0.4347 -0.09728 16 4 9 57487 0.0021 0.4371 -0.09959 16 4 10 57488 0.0034 0.4390 -0.10174 16 4 11 57489 0.0046 0.4410 -0.10366 16 4 12 57490 0.0061 0.4427 -0.10547 16 4 13 57491 0.0078 0.4442 -0.10717 16 4 14 57492 0.0091 0.4456 -0.10877 16 4 15 57493 0.0105 0.4474 -0.11031 16 4 16 57494 0.0120 0.4496 -0.11190 16 4 17 57495 0.0136 0.4519 -0.11355 16 4 18 57496 0.0155 0.4541 -0.11519 16 4 19 57497 0.0171 0.4559 -0.11689 16 4 20 57498 0.0185 0.4568 -0.11865 16 4 21 57499 0.0203 0.4576 -0.12034 16 4 22 57500 0.0221 0.4587 -0.12197 16 4 23 57501 0.0241 0.4602 -0.12359 16 4 24 57502 0.0258 0.4619 -0.12513 16 4 25 57503 0.0271 0.4635 -0.12653 16 4 26 57504 0.0281 0.4654 -0.12781 16 4 27 57505 0.0289 0.4670 -0.12903 16 4 28 57506 0.0297 0.4686 -0.13031 16 4 29 57507 0.0306 0.4699 -0.13171 16 4 30 57508 0.0321 0.4709 -0.13318 16 5 1 57509 0.0346 0.4723 -0.13482 _______________________________________________________________________ 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 = 0.1023 - 0.0454 cos A + 0.1327 sin A + 0.0419 cos C + 0.0099 sin C y = 0.3630 + 0.1231 cos A + 0.0440 sin A + 0.0099 cos C - 0.0419 sin C UT1-UTC = -0.1655 - 0.00147 (MJD - 57549) - (UT2-UT1) where A = 2*pi*(MJD-57541)/365.25 and C = 2*pi*(MJD-57541)/435. TAI-UTC(MJD 57542) = 36.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57541)**0.80 S t = 0.00025 (MJD-57541)**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 6 3 57542 0.0974 0.4972 -0.18996 2016 6 4 57543 0.0996 0.4975 -0.19149 2016 6 5 57544 0.1018 0.4977 -0.19282 2016 6 6 57545 0.1041 0.4978 -0.19397 2016 6 7 57546 0.1065 0.4980 -0.19500 2016 6 8 57547 0.1088 0.4981 -0.19594 2016 6 9 57548 0.1112 0.4981 -0.19682 2016 6 10 57549 0.1135 0.4982 -0.19769 2016 6 11 57550 0.1158 0.4981 -0.19860 2016 6 12 57551 0.1181 0.4980 -0.19958 2016 6 13 57552 0.1204 0.4979 -0.20062 2016 6 14 57553 0.1227 0.4977 -0.20168 2016 6 15 57554 0.1249 0.4975 -0.20272 2016 6 16 57555 0.1272 0.4972 -0.20373 2016 6 17 57556 0.1294 0.4970 -0.20467 2016 6 18 57557 0.1317 0.4966 -0.20556 2016 6 19 57558 0.1339 0.4963 -0.20640 2016 6 20 57559 0.1362 0.4959 -0.20720 2016 6 21 57560 0.1384 0.4954 -0.20797 2016 6 22 57561 0.1407 0.4950 -0.20875 2016 6 23 57562 0.1429 0.4945 -0.20958 2016 6 24 57563 0.1451 0.4940 -0.21050 2016 6 25 57564 0.1474 0.4934 -0.21151 2016 6 26 57565 0.1496 0.4928 -0.21262 2016 6 27 57566 0.1518 0.4921 -0.21381 2016 6 28 57567 0.1539 0.4915 -0.21506 2016 6 29 57568 0.1561 0.4908 -0.21628 2016 6 30 57569 0.1583 0.4901 -0.21742 2016 7 1 57570 0.1604 0.4893 -0.21842 2016 7 2 57571 0.1625 0.4885 -0.21926 2016 7 3 57572 0.1646 0.4877 -0.21995 2016 7 4 57573 0.1667 0.4868 -0.22052 2016 7 5 57574 0.1688 0.4859 -0.22105 2016 7 6 57575 0.1709 0.4850 -0.22158 2016 7 7 57576 0.1729 0.4840 -0.22213 2016 7 8 57577 0.1750 0.4830 -0.22271 2016 7 9 57578 0.1770 0.4820 -0.22332 2016 7 10 57579 0.1790 0.4810 -0.22393 2016 7 11 57580 0.1809 0.4799 -0.22452 2016 7 12 57581 0.1829 0.4788 -0.22508 2016 7 13 57582 0.1848 0.4776 -0.22557 2016 7 14 57583 0.1867 0.4765 -0.22598 2016 7 15 57584 0.1886 0.4753 -0.22631 2016 7 16 57585 0.1905 0.4740 -0.22658 2016 7 17 57586 0.1923 0.4728 -0.22680 2016 7 18 57587 0.1941 0.4715 -0.22701 2016 7 19 57588 0.1959 0.4702 -0.22724 2016 7 20 57589 0.1977 0.4688 -0.22753 2016 7 21 57590 0.1994 0.4675 -0.22795 2016 7 22 57591 0.2012 0.4661 -0.22852 2016 7 23 57592 0.2028 0.4646 -0.22925 2016 7 24 57593 0.2045 0.4632 -0.23012 2016 7 25 57594 0.2062 0.4617 -0.23107 2016 7 26 57595 0.2078 0.4602 -0.23203 2016 7 27 57596 0.2094 0.4587 -0.23295 2016 7 28 57597 0.2109 0.4571 -0.23378 2016 7 29 57598 0.2125 0.4556 -0.23449 2016 7 30 57599 0.2140 0.4540 -0.23509 2016 7 31 57600 0.2154 0.4523 -0.23561 2016 8 1 57601 0.2169 0.4507 -0.23609 2016 8 2 57602 0.2183 0.4490 -0.23660 2016 8 3 57603 0.2197 0.4473 -0.23716 2016 8 4 57604 0.2210 0.4456 -0.23780 2016 8 5 57605 0.2224 0.4439 -0.23849 2016 8 6 57606 0.2237 0.4421 -0.23921 2016 8 7 57607 0.2249 0.4404 -0.23995 2016 8 8 57608 0.2261 0.4386 -0.24067 2016 8 9 57609 0.2273 0.4368 -0.24135 2016 8 10 57610 0.2285 0.4349 -0.24197 2016 8 11 57611 0.2296 0.4331 -0.24253 2016 8 12 57612 0.2307 0.4312 -0.24303 2016 8 13 57613 0.2318 0.4293 -0.24347 2016 8 14 57614 0.2328 0.4275 -0.24390 2016 8 15 57615 0.2338 0.4255 -0.24433 2016 8 16 57616 0.2348 0.4236 -0.24484 2016 8 17 57617 0.2357 0.4217 -0.24546 2016 8 18 57618 0.2366 0.4197 -0.24625 2016 8 19 57619 0.2374 0.4177 -0.24723 2016 8 20 57620 0.2383 0.4157 -0.24839 2016 8 21 57621 0.2390 0.4137 -0.24968 2016 8 22 57622 0.2398 0.4117 -0.25103 2016 8 23 57623 0.2405 0.4097 -0.25234 2016 8 24 57624 0.2412 0.4077 -0.25358 2016 8 25 57625 0.2418 0.4056 -0.25470 2016 8 26 57626 0.2424 0.4036 -0.25570 2016 8 27 57627 0.2430 0.4015 -0.25664 2016 8 28 57628 0.2435 0.3994 -0.25754 2016 8 29 57629 0.2440 0.3973 -0.25847 2016 8 30 57630 0.2445 0.3952 -0.25946 2016 8 31 57631 0.2449 0.3931 -0.26054 2016 9 1 57632 0.2453 0.3910 -0.26171 2016 9 2 57633 0.2456 0.3889 -0.26294 2016 9 3 57634 0.2459 0.3868 -0.26421 2016 9 4 57635 0.2462 0.3847 -0.26549 2016 9 5 57636 0.2464 0.3826 -0.26675 2016 9 6 57637 0.2466 0.3804 -0.26796 2016 9 7 57638 0.2467 0.3783 -0.26911 2016 9 8 57639 0.2469 0.3762 -0.27019 2016 9 9 57640 0.2469 0.3740 -0.27122 2016 9 10 57641 0.2470 0.3719 -0.27223 2016 9 11 57642 0.2470 0.3697 -0.27325 2016 9 12 57643 0.2469 0.3676 -0.27432 2016 9 13 57644 0.2469 0.3655 -0.27549 2016 9 14 57645 0.2467 0.3633 -0.27682 2016 9 15 57646 0.2466 0.3612 -0.27833 2016 9 16 57647 0.2464 0.3590 -0.28004 2016 9 17 57648 0.2462 0.3569 -0.28191 2016 9 18 57649 0.2459 0.3548 -0.28388 2016 9 19 57650 0.2456 0.3527 -0.28583 2016 9 20 57651 0.2453 0.3505 -0.28771 2016 9 21 57652 0.2449 0.3484 -0.28944 2016 9 22 57653 0.2445 0.3463 -0.29103 2016 9 23 57654 0.2440 0.3442 -0.29249 2016 9 24 57655 0.2435 0.3421 -0.29388 2016 9 25 57656 0.2430 0.3400 -0.29526 2016 9 26 57657 0.2424 0.3379 -0.29666 2016 9 27 57658 0.2418 0.3358 -0.29814 2016 9 28 57659 0.2412 0.3338 -0.29969 2016 9 29 57660 0.2405 0.3317 -0.30131 2016 9 30 57661 0.2398 0.3297 -0.30297 2016 10 1 57662 0.2390 0.3276 -0.30465 2016 10 2 57663 0.2383 0.3256 -0.30631 2016 10 3 57664 0.2374 0.3236 -0.30792 2016 10 4 57665 0.2366 0.3216 -0.30947 2016 10 5 57666 0.2357 0.3196 -0.31094 2016 10 6 57667 0.2348 0.3176 -0.31235 2016 10 7 57668 0.2338 0.3156 -0.31370 2016 10 8 57669 0.2328 0.3137 -0.31503 2016 10 9 57670 0.2318 0.3118 -0.31638 2016 10 10 57671 0.2307 0.3098 -0.31781 2016 10 11 57672 0.2296 0.3079 -0.31935 2016 10 12 57673 0.2285 0.3060 -0.32106 2016 10 13 57674 0.2273 0.3042 -0.32296 2016 10 14 57675 0.2262 0.3023 -0.32505 2016 10 15 57676 0.2249 0.3005 -0.32728 2016 10 16 57677 0.2237 0.2987 -0.32958 2016 10 17 57678 0.2224 0.2969 -0.33184 2016 10 18 57679 0.2211 0.2951 -0.33399 2016 10 19 57680 0.2197 0.2933 -0.33597 2016 10 20 57681 0.2183 0.2916 -0.33780 2016 10 21 57682 0.2169 0.2899 -0.33951 2016 10 22 57683 0.2155 0.2882 -0.34117 2016 10 23 57684 0.2140 0.2865 -0.34282 2016 10 24 57685 0.2125 0.2849 -0.34452 2016 10 25 57686 0.2110 0.2832 -0.34627 2016 10 26 57687 0.2094 0.2816 -0.34807 2016 10 27 57688 0.2078 0.2801 -0.34991 2016 10 28 57689 0.2062 0.2785 -0.35177 2016 10 29 57690 0.2046 0.2770 -0.35360 2016 10 30 57691 0.2029 0.2755 -0.35538 2016 10 31 57692 0.2012 0.2740 -0.35710 2016 11 1 57693 0.1995 0.2725 -0.35873 2016 11 2 57694 0.1978 0.2711 -0.36028 2016 11 3 57695 0.1960 0.2697 -0.36176 2016 11 4 57696 0.1942 0.2683 -0.36319 2016 11 5 57697 0.1924 0.2670 -0.36462 2016 11 6 57698 0.1906 0.2656 -0.36608 2016 11 7 57699 0.1887 0.2644 -0.36762 2016 11 8 57700 0.1868 0.2631 -0.36929 2016 11 9 57701 0.1849 0.2619 -0.37112 2016 11 10 57702 0.1830 0.2606 -0.37312 2016 11 11 57703 0.1811 0.2595 -0.37529 2016 11 12 57704 0.1791 0.2583 -0.37756 2016 11 13 57705 0.1771 0.2572 -0.37986 2016 11 14 57706 0.1751 0.2561 -0.38209 2016 11 15 57707 0.1731 0.2551 -0.38418 2016 11 16 57708 0.1711 0.2540 -0.38611 2016 11 17 57709 0.1690 0.2530 -0.38790 2016 11 18 57710 0.1669 0.2521 -0.38961 2016 11 19 57711 0.1649 0.2511 -0.39128 2016 11 20 57712 0.1628 0.2502 -0.39297 2016 11 21 57713 0.1606 0.2494 -0.39470 2016 11 22 57714 0.1585 0.2485 -0.39647 2016 11 23 57715 0.1564 0.2477 -0.39827 2016 11 24 57716 0.1542 0.2469 -0.40007 2016 11 25 57717 0.1520 0.2462 -0.40186 2016 11 26 57718 0.1499 0.2455 -0.40360 2016 11 27 57719 0.1477 0.2448 -0.40527 2016 11 28 57720 0.1455 0.2442 -0.40686 2016 11 29 57721 0.1433 0.2436 -0.40837 2016 11 30 57722 0.1410 0.2430 -0.40982 2016 12 1 57723 0.1388 0.2425 -0.41121 2016 12 2 57724 0.1366 0.2420 -0.41259 2016 12 3 57725 0.1343 0.2415 -0.41401 2016 12 4 57726 0.1321 0.2411 -0.41552 2016 12 5 57727 0.1298 0.2407 -0.41716 2016 12 6 57728 0.1275 0.2403 -0.41897 2016 12 7 57729 0.1253 0.2400 -0.42098 2016 12 8 57730 0.1230 0.2397 -0.42319 2016 12 9 57731 0.1207 0.2394 -0.42556 2016 12 10 57732 0.1184 0.2392 -0.42802 2016 12 11 57733 0.1162 0.2390 -0.43050 2016 12 12 57734 0.1139 0.2388 -0.43289 2016 12 13 57735 0.1116 0.2387 -0.43514 2016 12 14 57736 0.1093 0.2386 -0.43721 2016 12 15 57737 0.1070 0.2386 -0.43913 2016 12 16 57738 0.1047 0.2386 -0.44094 2016 12 17 57739 0.1024 0.2386 -0.44269 2016 12 18 57740 0.1002 0.2386 -0.44441 2016 12 19 57741 0.0979 0.2387 -0.44613 2016 12 20 57742 0.0956 0.2389 -0.44783 2016 12 21 57743 0.0933 0.2390 -0.44951 2016 12 22 57744 0.0911 0.2392 -0.45112 2016 12 23 57745 0.0888 0.2394 -0.45265 2016 12 24 57746 0.0865 0.2397 -0.45406 2016 12 25 57747 0.0843 0.2400 -0.45533 2016 12 26 57748 0.0820 0.2403 -0.45645 2016 12 27 57749 0.0798 0.2407 -0.45744 2016 12 28 57750 0.0776 0.2411 -0.45831 2016 12 29 57751 0.0754 0.2415 -0.45910 2016 12 30 57752 0.0731 0.2420 -0.45988 2016 12 31 57753 0.0709 0.2425 -0.46071 2017 1 1 57754 0.0687 0.2431 -0.46165 2017 1 2 57755 0.0666 0.2436 -0.46276 2017 1 3 57756 0.0644 0.2442 -0.46407 2017 1 4 57757 0.0622 0.2449 -0.46555 2017 1 5 57758 0.0601 0.2455 -0.46717 2017 1 6 57759 0.0580 0.2463 -0.46884 2017 1 7 57760 0.0558 0.2470 -0.47049 2017 1 8 57761 0.0537 0.2478 -0.47207 2017 1 9 57762 0.0517 0.2486 -0.47354 2017 1 10 57763 0.0496 0.2494 -0.47487 2017 1 11 57764 0.0475 0.2503 -0.47612 2017 1 12 57765 0.0455 0.2512 -0.47732 2017 1 13 57766 0.0435 0.2521 -0.47854 2017 1 14 57767 0.0415 0.2531 -0.47974 2017 1 15 57768 0.0395 0.2540 -0.48099 2017 1 16 57769 0.0375 0.2551 -0.48232 2017 1 17 57770 0.0356 0.2561 -0.48374 2017 1 18 57771 0.0336 0.2572 -0.48520 2017 1 19 57772 0.0317 0.2583 -0.48662 2017 1 20 57773 0.0299 0.2595 -0.48802 2017 1 21 57774 0.0280 0.2606 -0.48934 2017 1 22 57775 0.0262 0.2618 -0.49065 2017 1 23 57776 0.0243 0.2631 -0.49186 2017 1 24 57777 0.0225 0.2643 -0.49300 2017 1 25 57778 0.0208 0.2656 -0.49407 2017 1 26 57779 0.0190 0.2669 -0.49514 2017 1 27 57780 0.0173 0.2683 -0.49624 2017 1 28 57781 0.0156 0.2696 -0.49740 2017 1 29 57782 0.0139 0.2710 -0.49870 2017 1 30 57783 0.0123 0.2724 -0.50019 2017 1 31 57784 0.0107 0.2739 -0.50192 2017 2 1 57785 0.0091 0.2753 -0.50382 2017 2 2 57786 0.0075 0.2768 -0.50572 2017 2 3 57787 0.0060 0.2783 -0.50752 2017 2 4 57788 0.0045 0.2799 -0.50921 2017 2 5 57789 0.0030 0.2814 -0.51090 2017 2 6 57790 0.0015 0.2830 -0.51255 2017 2 7 57791 0.0001 0.2846 -0.51406 2017 2 8 57792 -0.0013 0.2863 -0.51549 2017 2 9 57793 -0.0027 0.2879 -0.51690 2017 2 10 57794 -0.0040 0.2896 -0.51838 2017 2 11 57795 -0.0053 0.2913 -0.51989 2017 2 12 57796 -0.0066 0.2930 -0.52152 2017 2 13 57797 -0.0078 0.2947 -0.52321 2017 2 14 57798 -0.0090 0.2965 -0.52490 2017 2 15 57799 -0.0102 0.2983 -0.52651 2017 2 16 57800 -0.0113 0.3001 -0.52804 2017 2 17 57801 -0.0125 0.3019 -0.52951 2017 2 18 57802 -0.0135 0.3037 -0.53094 2017 2 19 57803 -0.0146 0.3055 -0.53236 2017 2 20 57804 -0.0156 0.3074 -0.53373 2017 2 21 57805 -0.0166 0.3093 -0.53509 2017 2 22 57806 -0.0175 0.3112 -0.53647 2017 2 23 57807 -0.0184 0.3131 -0.53791 2017 2 24 57808 -0.0193 0.3150 -0.53939 2017 2 25 57809 -0.0201 0.3169 -0.54098 2017 2 26 57810 -0.0210 0.3189 -0.54277 2017 2 27 57811 -0.0217 0.3208 -0.54479 2017 2 28 57812 -0.0225 0.3228 -0.54695 2017 3 1 57813 -0.0232 0.3248 -0.54924 2017 3 2 57814 -0.0238 0.3268 -0.55147 2017 3 3 57815 -0.0245 0.3288 -0.55364 2017 3 4 57816 -0.0251 0.3308 -0.55566 2017 3 5 57817 -0.0256 0.3328 -0.55758 2017 3 6 57818 -0.0261 0.3348 -0.55942 2017 3 7 57819 -0.0266 0.3369 -0.56120 2017 3 8 57820 -0.0271 0.3389 -0.56298 2017 3 9 57821 -0.0275 0.3410 -0.56482 2017 3 10 57822 -0.0279 0.3430 -0.56670 2017 3 11 57823 -0.0282 0.3451 -0.56861 2017 3 12 57824 -0.0285 0.3472 -0.57069 2017 3 13 57825 -0.0288 0.3492 -0.57287 2017 3 14 57826 -0.0290 0.3513 -0.57508 2017 3 15 57827 -0.0292 0.3534 -0.57730 2017 3 16 57828 -0.0293 0.3555 -0.57946 2017 3 17 57829 -0.0295 0.3576 -0.58156 2017 3 18 57830 -0.0295 0.3597 -0.58355 2017 3 19 57831 -0.0296 0.3617 -0.58550 2017 3 20 57832 -0.0296 0.3638 -0.58735 2017 3 21 57833 -0.0296 0.3659 -0.58914 2017 3 22 57834 -0.0295 0.3680 -0.59090 2017 3 23 57835 -0.0294 0.3701 -0.59262 2017 3 24 57836 -0.0293 0.3722 -0.59445 2017 3 25 57837 -0.0291 0.3743 -0.59643 2017 3 26 57838 -0.0289 0.3764 -0.59860 2017 3 27 57839 -0.0286 0.3785 -0.60099 2017 3 28 57840 -0.0283 0.3805 -0.60348 2017 3 29 57841 -0.0280 0.3826 -0.60600 2017 3 30 57842 -0.0277 0.3847 -0.60849 2017 3 31 57843 -0.0273 0.3868 -0.61089 2017 4 1 57844 -0.0268 0.3888 -0.61312 2017 4 2 57845 -0.0264 0.3909 -0.61515 2017 4 3 57846 -0.0259 0.3929 -0.61704 2017 4 4 57847 -0.0253 0.3950 -0.61892 2017 4 5 57848 -0.0247 0.3970 -0.62084 2017 4 6 57849 -0.0241 0.3990 -0.62285 2017 4 7 57850 -0.0235 0.4010 -0.62494 2017 4 8 57851 -0.0228 0.4030 -0.62715 2017 4 9 57852 -0.0221 0.4050 -0.62935 2017 4 10 57853 -0.0214 0.4070 -0.63158 2017 4 11 57854 -0.0206 0.4090 -0.63376 2017 4 12 57855 -0.0198 0.4109 -0.63588 2017 4 13 57856 -0.0189 0.4129 -0.63793 2017 4 14 57857 -0.0180 0.4148 -0.63986 2017 4 15 57858 -0.0171 0.4167 -0.64167 2017 4 16 57859 -0.0162 0.4186 -0.64343 2017 4 17 57860 -0.0152 0.4205 -0.64506 2017 4 18 57861 -0.0142 0.4224 -0.64666 2017 4 19 57862 -0.0131 0.4242 -0.64827 2017 4 20 57863 -0.0120 0.4261 -0.64992 2017 4 21 57864 -0.0109 0.4279 -0.65168 2017 4 22 57865 -0.0098 0.4297 -0.65356 2017 4 23 57866 -0.0086 0.4315 -0.65559 2017 4 24 57867 -0.0074 0.4333 -0.65771 2017 4 25 57868 -0.0062 0.4350 -0.65998 2017 4 26 57869 -0.0049 0.4368 -0.66227 2017 4 27 57870 -0.0036 0.4385 -0.66443 2017 4 28 57871 -0.0023 0.4402 -0.66651 2017 4 29 57872 -0.0010 0.4419 -0.66832 2017 4 30 57873 0.0004 0.4435 -0.67004 2017 5 1 57874 0.0018 0.4452 -0.67167 2017 5 2 57875 0.0032 0.4468 -0.67328 2017 5 3 57876 0.0047 0.4484 -0.67487 2017 5 4 57877 0.0062 0.4499 -0.67655 2017 5 5 57878 0.0077 0.4515 -0.67833 2017 5 6 57879 0.0092 0.4530 -0.68018 2017 5 7 57880 0.0108 0.4545 -0.68200 2017 5 8 57881 0.0124 0.4560 -0.68385 2017 5 9 57882 0.0140 0.4574 -0.68565 2017 5 10 57883 0.0156 0.4589 -0.68746 2017 5 11 57884 0.0173 0.4603 -0.68924 2017 5 12 57885 0.0189 0.4616 -0.69094 2017 5 13 57886 0.0206 0.4630 -0.69251 2017 5 14 57887 0.0224 0.4643 -0.69392 2017 5 15 57888 0.0241 0.4656 -0.69535 2017 5 16 57889 0.0259 0.4669 -0.69666 2017 5 17 57890 0.0276 0.4681 -0.69807 2017 5 18 57891 0.0295 0.4694 -0.69948 2017 5 19 57892 0.0313 0.4705 -0.70096 2017 5 20 57893 0.0331 0.4717 -0.70252 2017 5 21 57894 0.0350 0.4728 -0.70424 2017 5 22 57895 0.0369 0.4739 -0.70608 2017 5 23 57896 0.0388 0.4750 -0.70799 2017 5 24 57897 0.0407 0.4761 -0.70993 2017 5 25 57898 0.0426 0.4771 -0.71178 2017 5 26 57899 0.0445 0.4781 -0.71344 2017 5 27 57900 0.0465 0.4790 -0.71487 2017 5 28 57901 0.0485 0.4800 -0.71613 2017 5 29 57902 0.0505 0.4809 -0.71728 2017 5 30 57903 0.0525 0.4817 -0.71833 2017 5 31 57904 0.0545 0.4826 -0.71938 2017 6 1 57905 0.0565 0.4834 -0.72046 2017 6 2 57906 0.0585 0.4841 -0.72148 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) 57519 -92.15 0.20 -13.68 0.06 57520 -91.90 0.20 -13.87 0.06 57521 -92.24 0.20 -13.93 0.06 57522 -92.79 0.30 -13.87 0.15 57523 -93.03 0.30 -13.78 0.15 57524 -92.88 0.30 -13.70 0.15 57525 -92.71 0.30 -13.57 0.15 57526 -92.82 0.30 -13.40 0.15 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 57480 -92.0 -12.6 57481 -91.9 -12.6 57482 -92.2 -12.9 57483 -92.4 -13.2 57484 -92.1 -13.1 57485 -91.8 -12.8 57486 -92.2 -12.8 57487 -92.7 -12.9 57488 -93.1 -13.0 57489 -93.2 -13.1 57490 -92.8 -13.2 57491 -92.3 -13.5 57492 -92.1 -13.6 57493 -92.3 -13.7 57494 -92.5 -13.6 57495 -92.4 -13.6 57496 -92.1 -13.5 57497 -91.9 -13.4 57498 -91.8 -13.1 57499 -92.0 -13.0 57500 -92.2 -13.1 57501 -92.3 -13.3 57502 -92.4 -13.4 57503 -92.5 -13.5 57504 -92.6 -13.6 57505 -92.8 -13.7 57506 -92.7 -13.8 57507 -92.1 -13.7 57508 -91.5 -13.5 57509 -91.2 -13.4 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57519 0.146 0.080 0.093 0.060 57520 0.185 0.080 0.085 0.060 57521 0.201 0.080 0.081 0.060 57522 0.199 0.119 0.066 0.150 57523 0.185 0.119 0.045 0.150 57524 0.162 0.119 0.025 0.150 57525 0.126 0.119 0.033 0.150 57526 0.081 0.119 0.039 0.150 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 57480 -0.04 -0.09 57481 -0.04 -0.06 57482 -0.04 -0.10 57483 -0.06 -0.19 57484 -0.01 -0.13 57485 0.02 0.00 57486 -0.10 -0.04 57487 -0.11 -0.03 57488 -0.08 0.01 57489 -0.06 0.02 57490 -0.02 0.09 57491 0.00 0.01 57492 0.00 0.07 57493 -0.01 -0.02 57494 0.01 0.02 57495 0.03 -0.04 57496 0.04 0.00 57497 0.02 -0.04 57498 0.05 0.07 57499 0.02 0.04 57500 0.01 -0.02 57501 0.02 -0.07 57502 0.03 -0.03 57503 0.04 -0.03 57504 0.08 -0.01 57505 0.07 0.05 57506 0.09 0.05 57507 0.15 0.09 57508 0.14 0.09 57509 0.12 0.01 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).