********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 7 July 2016 Vol. XXIX No. 027 ______________________________________________________________________ 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. * * * * A positive leap second WILL be introduced in UTC on 31 Dec 2016. * * * * 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 7 1 57570 0.15228 .00009 0.48395 .00009 -0.212450 0.000010 16 7 2 57571 0.15444 .00009 0.48265 .00009 -0.213311 0.000011 16 7 3 57572 0.15659 .00009 0.48157 .00009 -0.214129 0.000013 16 7 4 57573 0.15863 .00009 0.48058 .00009 -0.214771 0.000023 16 7 5 57574 0.16060 .00009 0.47956 .00009 -0.215332 0.000024 16 7 6 57575 0.16251 .00009 0.47847 .00009 -0.215886 0.000025 16 7 7 57576 0.16441 .00009 0.47736 .00009 -0.216463 0.000028 IERS Final Values MJD x y UT1-UTC " " s 16 5 2 57510 0.0367 0.4740 -0.13658 16 5 3 57511 0.0386 0.4756 -0.13853 16 5 4 57512 0.0407 0.4769 -0.14066 16 5 5 57513 0.0423 0.4780 -0.14286 16 5 6 57514 0.0434 0.4791 -0.14501 16 5 7 57515 0.0449 0.4802 -0.14701 16 5 8 57516 0.0466 0.4815 -0.14889 16 5 9 57517 0.0484 0.4829 -0.15055 16 5 10 57518 0.0502 0.4841 -0.15207 16 5 11 57519 0.0523 0.4853 -0.15348 16 5 12 57520 0.0543 0.4864 -0.15486 16 5 13 57521 0.0564 0.4873 -0.15627 16 5 14 57522 0.0584 0.4882 -0.15781 16 5 15 57523 0.0605 0.4888 -0.15944 16 5 16 57524 0.0625 0.4891 -0.16117 16 5 17 57525 0.0646 0.4896 -0.16294 16 5 18 57526 0.0664 0.4904 -0.16465 16 5 19 57527 0.0681 0.4912 -0.16628 16 5 20 57528 0.0695 0.4922 -0.16785 16 5 21 57529 0.0705 0.4931 -0.16938 16 5 22 57530 0.0712 0.4937 -0.17086 16 5 23 57531 0.0724 0.4938 -0.17229 16 5 24 57532 0.0743 0.4942 -0.17374 16 5 25 57533 0.0764 0.4948 -0.17520 16 5 26 57534 0.0788 0.4954 -0.17656 16 5 27 57535 0.0809 0.4961 -0.17792 16 5 28 57536 0.0827 0.4966 -0.17940 16 5 29 57537 0.0850 0.4967 -0.18096 16 5 30 57538 0.0879 0.4965 -0.18273 16 5 31 57539 0.0904 0.4965 -0.18457 16 6 1 57540 0.0928 0.4966 -0.18636 _______________________________________________________________________ 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 = 0.0980 + 0.0316 cos A + 0.1236 sin A + 0.0386 cos C + 0.0004 sin C y = 0.3628 + 0.1160 cos A - 0.0299 sin A + 0.0004 cos C - 0.0386 sin C UT1-UTC = -0.2104 - 0.00146 (MJD - 57584) - (UT2-UT1) where A = 2*pi*(MJD-57576)/365.25 and C = 2*pi*(MJD-57576)/435. TAI-UTC(MJD 57577) = 36.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57576)**0.80 S t = 0.00025 (MJD-57576)**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 7 8 57577 0.1663 0.4762 -0.21711 2016 7 9 57578 0.1683 0.4752 -0.21779 2016 7 10 57579 0.1702 0.4741 -0.21846 2016 7 11 57580 0.1722 0.4731 -0.21906 2016 7 12 57581 0.1741 0.4721 -0.21955 2016 7 13 57582 0.1760 0.4711 -0.21991 2016 7 14 57583 0.1779 0.4701 -0.22015 2016 7 15 57584 0.1797 0.4690 -0.22030 2016 7 16 57585 0.1815 0.4679 -0.22038 2016 7 17 57586 0.1832 0.4668 -0.22046 2016 7 18 57587 0.1849 0.4657 -0.22059 2016 7 19 57588 0.1866 0.4645 -0.22081 2016 7 20 57589 0.1883 0.4633 -0.22112 2016 7 21 57590 0.1900 0.4621 -0.22156 2016 7 22 57591 0.1917 0.4608 -0.22219 2016 7 23 57592 0.1933 0.4596 -0.22297 2016 7 24 57593 0.1949 0.4583 -0.22388 2016 7 25 57594 0.1965 0.4570 -0.22486 2016 7 26 57595 0.1980 0.4556 -0.22581 2016 7 27 57596 0.1996 0.4543 -0.22670 2016 7 28 57597 0.2011 0.4529 -0.22745 2016 7 29 57598 0.2026 0.4515 -0.22806 2016 7 30 57599 0.2040 0.4501 -0.22854 2016 7 31 57600 0.2054 0.4487 -0.22893 2016 8 1 57601 0.2068 0.4472 -0.22930 2016 8 2 57602 0.2082 0.4458 -0.22969 2016 8 3 57603 0.2095 0.4443 -0.23015 2016 8 4 57604 0.2108 0.4428 -0.23071 2016 8 5 57605 0.2121 0.4412 -0.23136 2016 8 6 57606 0.2134 0.4397 -0.23207 2016 8 7 57607 0.2146 0.4381 -0.23282 2016 8 8 57608 0.2158 0.4365 -0.23357 2016 8 9 57609 0.2169 0.4349 -0.23431 2016 8 10 57610 0.2181 0.4333 -0.23502 2016 8 11 57611 0.2192 0.4317 -0.23570 2016 8 12 57612 0.2202 0.4300 -0.23632 2016 8 13 57613 0.2213 0.4283 -0.23691 2016 8 14 57614 0.2223 0.4267 -0.23749 2016 8 15 57615 0.2232 0.4249 -0.23810 2016 8 16 57616 0.2242 0.4232 -0.23876 2016 8 17 57617 0.2251 0.4215 -0.23953 2016 8 18 57618 0.2260 0.4198 -0.24046 2016 8 19 57619 0.2268 0.4180 -0.24156 2016 8 20 57620 0.2276 0.4162 -0.24282 2016 8 21 57621 0.2284 0.4144 -0.24420 2016 8 22 57622 0.2291 0.4126 -0.24561 2016 8 23 57623 0.2299 0.4108 -0.24698 2016 8 24 57624 0.2305 0.4090 -0.24824 2016 8 25 57625 0.2312 0.4072 -0.24936 2016 8 26 57626 0.2318 0.4053 -0.25035 2016 8 27 57627 0.2324 0.4035 -0.25124 2016 8 28 57628 0.2329 0.4016 -0.25208 2016 8 29 57629 0.2334 0.3998 -0.25292 2016 8 30 57630 0.2339 0.3979 -0.25381 2016 8 31 57631 0.2343 0.3960 -0.25477 2016 9 1 57632 0.2347 0.3941 -0.25581 2016 9 2 57633 0.2351 0.3922 -0.25692 2016 9 3 57634 0.2354 0.3903 -0.25806 2016 9 4 57635 0.2357 0.3884 -0.25920 2016 9 5 57636 0.2360 0.3865 -0.26031 2016 9 6 57637 0.2362 0.3846 -0.26138 2016 9 7 57638 0.2364 0.3827 -0.26239 2016 9 8 57639 0.2366 0.3808 -0.26335 2016 9 9 57640 0.2367 0.3788 -0.26426 2016 9 10 57641 0.2368 0.3769 -0.26515 2016 9 11 57642 0.2368 0.3750 -0.26605 2016 9 12 57643 0.2368 0.3730 -0.26700 2016 9 13 57644 0.2368 0.3711 -0.26807 2016 9 14 57645 0.2368 0.3692 -0.26928 2016 9 15 57646 0.2367 0.3673 -0.27070 2016 9 16 57647 0.2366 0.3653 -0.27231 2016 9 17 57648 0.2364 0.3634 -0.27409 2016 9 18 57649 0.2362 0.3615 -0.27598 2016 9 19 57650 0.2360 0.3596 -0.27787 2016 9 20 57651 0.2357 0.3576 -0.27969 2016 9 21 57652 0.2354 0.3557 -0.28138 2016 9 22 57653 0.2351 0.3538 -0.28292 2016 9 23 57654 0.2347 0.3519 -0.28434 2016 9 24 57655 0.2343 0.3500 -0.28569 2016 9 25 57656 0.2339 0.3481 -0.28702 2016 9 26 57657 0.2334 0.3462 -0.28838 2016 9 27 57658 0.2329 0.3444 -0.28981 2016 9 28 57659 0.2324 0.3425 -0.29131 2016 9 29 57660 0.2318 0.3406 -0.29288 2016 9 30 57661 0.2312 0.3388 -0.29449 2016 10 1 57662 0.2305 0.3369 -0.29611 2016 10 2 57663 0.2299 0.3351 -0.29772 2016 10 3 57664 0.2292 0.3333 -0.29928 2016 10 4 57665 0.2284 0.3315 -0.30078 2016 10 5 57666 0.2277 0.3296 -0.30221 2016 10 6 57667 0.2269 0.3279 -0.30357 2016 10 7 57668 0.2260 0.3261 -0.30488 2016 10 8 57669 0.2251 0.3243 -0.30617 2016 10 9 57670 0.2242 0.3226 -0.30748 2016 10 10 57671 0.2233 0.3208 -0.30888 2016 10 11 57672 0.2224 0.3191 -0.31040 2016 10 12 57673 0.2214 0.3174 -0.31210 2016 10 13 57674 0.2203 0.3157 -0.31399 2016 10 14 57675 0.2193 0.3140 -0.31609 2016 10 15 57676 0.2182 0.3123 -0.31833 2016 10 16 57677 0.2171 0.3107 -0.32065 2016 10 17 57678 0.2159 0.3091 -0.32295 2016 10 18 57679 0.2148 0.3074 -0.32513 2016 10 19 57680 0.2136 0.3058 -0.32717 2016 10 20 57681 0.2123 0.3043 -0.32906 2016 10 21 57682 0.2111 0.3027 -0.33085 2016 10 22 57683 0.2098 0.3012 -0.33258 2016 10 23 57684 0.2085 0.2996 -0.33432 2016 10 24 57685 0.2072 0.2981 -0.33606 2016 10 25 57686 0.2058 0.2967 -0.33785 2016 10 26 57687 0.2044 0.2952 -0.33970 2016 10 27 57688 0.2030 0.2938 -0.34159 2016 10 28 57689 0.2016 0.2923 -0.34348 2016 10 29 57690 0.2001 0.2909 -0.34536 2016 10 30 57691 0.1986 0.2896 -0.34719 2016 10 31 57692 0.1971 0.2882 -0.34896 2016 11 1 57693 0.1955 0.2869 -0.35064 2016 11 2 57694 0.1940 0.2856 -0.35223 2016 11 3 57695 0.1924 0.2843 -0.35376 2016 11 4 57696 0.1908 0.2831 -0.35523 2016 11 5 57697 0.1892 0.2818 -0.35670 2016 11 6 57698 0.1875 0.2806 -0.35820 2016 11 7 57699 0.1859 0.2794 -0.35979 2016 11 8 57700 0.1842 0.2783 -0.36150 2016 11 9 57701 0.1825 0.2772 -0.36337 2016 11 10 57702 0.1807 0.2761 -0.36542 2016 11 11 57703 0.1790 0.2750 -0.36763 2016 11 12 57704 0.1772 0.2739 -0.36995 2016 11 13 57705 0.1754 0.2729 -0.37230 2016 11 14 57706 0.1736 0.2719 -0.37457 2016 11 15 57707 0.1718 0.2709 -0.37671 2016 11 16 57708 0.1700 0.2700 -0.37868 2016 11 17 57709 0.1681 0.2691 -0.38051 2016 11 18 57710 0.1663 0.2682 -0.38226 2016 11 19 57711 0.1644 0.2674 -0.38397 2016 11 20 57712 0.1625 0.2665 -0.38570 2016 11 21 57713 0.1606 0.2657 -0.38747 2016 11 22 57714 0.1587 0.2650 -0.38928 2016 11 23 57715 0.1568 0.2642 -0.39111 2016 11 24 57716 0.1548 0.2635 -0.39294 2016 11 25 57717 0.1529 0.2628 -0.39474 2016 11 26 57718 0.1509 0.2622 -0.39649 2016 11 27 57719 0.1489 0.2616 -0.39817 2016 11 28 57720 0.1469 0.2610 -0.39975 2016 11 29 57721 0.1449 0.2604 -0.40124 2016 11 30 57722 0.1429 0.2599 -0.40265 2016 12 1 57723 0.1409 0.2594 -0.40398 2016 12 2 57724 0.1389 0.2589 -0.40529 2016 12 3 57725 0.1369 0.2585 -0.40660 2016 12 4 57726 0.1349 0.2581 -0.40796 2016 12 5 57727 0.1328 0.2577 -0.40942 2016 12 6 57728 0.1308 0.2574 -0.41101 2016 12 7 57729 0.1287 0.2571 -0.41275 2016 12 8 57730 0.1267 0.2568 -0.41463 2016 12 9 57731 0.1246 0.2565 -0.41663 2016 12 10 57732 0.1226 0.2563 -0.41868 2016 12 11 57733 0.1205 0.2561 -0.42071 2016 12 12 57734 0.1185 0.2560 -0.42264 2016 12 13 57735 0.1164 0.2559 -0.42444 2016 12 14 57736 0.1143 0.2558 -0.42609 2016 12 15 57737 0.1123 0.2557 -0.42764 2016 12 16 57738 0.1102 0.2557 -0.42914 2016 12 17 57739 0.1082 0.2557 -0.43065 2016 12 18 57740 0.1061 0.2557 -0.43219 2016 12 19 57741 0.1040 0.2558 -0.43377 2016 12 20 57742 0.1020 0.2559 -0.43538 2016 12 21 57743 0.0999 0.2560 -0.43699 2016 12 22 57744 0.0979 0.2562 -0.43857 2016 12 23 57745 0.0959 0.2564 -0.44010 2016 12 24 57746 0.0938 0.2566 -0.44156 2016 12 25 57747 0.0918 0.2569 -0.44293 2016 12 26 57748 0.0898 0.2572 -0.44421 2016 12 27 57749 0.0878 0.2575 -0.44540 2016 12 28 57750 0.0857 0.2578 -0.44652 2016 12 29 57751 0.0837 0.2582 -0.44761 2016 12 30 57752 0.0818 0.2586 -0.44869 2016 12 31 57753 0.0798 0.2591 -0.44983 2017 1 1 57754 0.0778 0.2595 0.54895 2017 1 2 57755 0.0758 0.2600 0.54760 2017 1 3 57756 0.0739 0.2606 0.54611 2017 1 4 57757 0.0720 0.2612 0.54448 2017 1 5 57758 0.0700 0.2617 0.54274 2017 1 6 57759 0.0681 0.2624 0.54092 2017 1 7 57760 0.0662 0.2630 0.53910 2017 1 8 57761 0.0643 0.2637 0.53733 2017 1 9 57762 0.0625 0.2644 0.53565 2017 1 10 57763 0.0606 0.2652 0.53408 2017 1 11 57764 0.0588 0.2659 0.53259 2017 1 12 57765 0.0569 0.2667 0.53115 2017 1 13 57766 0.0551 0.2676 0.52968 2017 1 14 57767 0.0533 0.2684 0.52816 2017 1 15 57768 0.0515 0.2693 0.52656 2017 1 16 57769 0.0498 0.2702 0.52491 2017 1 17 57770 0.0480 0.2711 0.52321 2017 1 18 57771 0.0463 0.2721 0.52151 2017 1 19 57772 0.0446 0.2731 0.51980 2017 1 20 57773 0.0429 0.2741 0.51811 2017 1 21 57774 0.0413 0.2752 0.51645 2017 1 22 57775 0.0396 0.2762 0.51482 2017 1 23 57776 0.0380 0.2773 0.51321 2017 1 24 57777 0.0364 0.2784 0.51162 2017 1 25 57778 0.0348 0.2796 0.51004 2017 1 26 57779 0.0333 0.2808 0.50843 2017 1 27 57780 0.0317 0.2820 0.50677 2017 1 28 57781 0.0302 0.2832 0.50502 2017 1 29 57782 0.0287 0.2844 0.50317 2017 1 30 57783 0.0273 0.2857 0.50120 2017 1 31 57784 0.0258 0.2870 0.49914 2017 2 1 57785 0.0244 0.2883 0.49702 2017 2 2 57786 0.0230 0.2896 0.49490 2017 2 3 57787 0.0217 0.2910 0.49283 2017 2 4 57788 0.0203 0.2923 0.49086 2017 2 5 57789 0.0190 0.2937 0.48901 2017 2 6 57790 0.0177 0.2951 0.48727 2017 2 7 57791 0.0165 0.2966 0.48562 2017 2 8 57792 0.0152 0.2980 0.48403 2017 2 9 57793 0.0140 0.2995 0.48245 2017 2 10 57794 0.0129 0.3010 0.48085 2017 2 11 57795 0.0117 0.3025 0.47919 2017 2 12 57796 0.0106 0.3040 0.47744 2017 2 13 57797 0.0095 0.3056 0.47562 2017 2 14 57798 0.0085 0.3071 0.47376 2017 2 15 57799 0.0074 0.3087 0.47190 2017 2 16 57800 0.0064 0.3103 0.47003 2017 2 17 57801 0.0055 0.3119 0.46821 2017 2 18 57802 0.0045 0.3135 0.46648 2017 2 19 57803 0.0036 0.3152 0.46478 2017 2 20 57804 0.0027 0.3168 0.46314 2017 2 21 57805 0.0019 0.3185 0.46164 2017 2 22 57806 0.0011 0.3202 0.46017 2017 2 23 57807 0.0003 0.3219 0.45873 2017 2 24 57808 -0.0005 0.3236 0.45717 2017 2 25 57809 -0.0012 0.3253 0.45548 2017 2 26 57810 -0.0019 0.3270 0.45360 2017 2 27 57811 -0.0025 0.3288 0.45160 2017 2 28 57812 -0.0032 0.3305 0.44947 2017 3 1 57813 -0.0038 0.3323 0.44729 2017 3 2 57814 -0.0043 0.3341 0.44519 2017 3 3 57815 -0.0049 0.3358 0.44322 2017 3 4 57816 -0.0053 0.3376 0.44139 2017 3 5 57817 -0.0058 0.3394 0.43967 2017 3 6 57818 -0.0062 0.3412 0.43814 2017 3 7 57819 -0.0066 0.3430 0.43669 2017 3 8 57820 -0.0070 0.3449 0.43535 2017 3 9 57821 -0.0073 0.3467 0.43393 2017 3 10 57822 -0.0076 0.3485 0.43244 2017 3 11 57823 -0.0079 0.3503 0.43083 2017 3 12 57824 -0.0081 0.3522 0.42905 2017 3 13 57825 -0.0083 0.3540 0.42716 2017 3 14 57826 -0.0085 0.3559 0.42521 2017 3 15 57827 -0.0086 0.3577 0.42329 2017 3 16 57828 -0.0087 0.3595 0.42140 2017 3 17 57829 -0.0087 0.3614 0.41966 2017 3 18 57830 -0.0088 0.3632 0.41802 2017 3 19 57831 -0.0088 0.3651 0.41649 2017 3 20 57832 -0.0087 0.3669 0.41504 2017 3 21 57833 -0.0086 0.3688 0.41365 2017 3 22 57834 -0.0085 0.3706 0.41222 2017 3 23 57835 -0.0084 0.3725 0.41074 2017 3 24 57836 -0.0082 0.3743 0.40916 2017 3 25 57837 -0.0080 0.3762 0.40749 2017 3 26 57838 -0.0078 0.3780 0.40568 2017 3 27 57839 -0.0075 0.3799 0.40366 2017 3 28 57840 -0.0072 0.3817 0.40145 2017 3 29 57841 -0.0068 0.3835 0.39913 2017 3 30 57842 -0.0065 0.3854 0.39684 2017 3 31 57843 -0.0061 0.3872 0.39461 2017 4 1 57844 -0.0056 0.3890 0.39254 2017 4 2 57845 -0.0051 0.3908 0.39053 2017 4 3 57846 -0.0046 0.3926 0.38865 2017 4 4 57847 -0.0041 0.3944 0.38684 2017 4 5 57848 -0.0035 0.3962 0.38505 2017 4 6 57849 -0.0029 0.3979 0.38323 2017 4 7 57850 -0.0023 0.3997 0.38134 2017 4 8 57851 -0.0016 0.4015 0.37941 2017 4 9 57852 -0.0009 0.4032 0.37744 2017 4 10 57853 -0.0002 0.4049 0.37541 2017 4 11 57854 0.0005 0.4067 0.37332 2017 4 12 57855 0.0013 0.4084 0.37126 2017 4 13 57856 0.0021 0.4101 0.36936 2017 4 14 57857 0.0030 0.4118 0.36767 2017 4 15 57858 0.0039 0.4134 0.36614 2017 4 16 57859 0.0048 0.4151 0.36462 2017 4 17 57860 0.0057 0.4168 0.36308 2017 4 18 57861 0.0067 0.4184 0.36163 2017 4 19 57862 0.0077 0.4200 0.36017 2017 4 20 57863 0.0087 0.4216 0.35869 2017 4 21 57864 0.0097 0.4232 0.35707 2017 4 22 57865 0.0108 0.4248 0.35536 2017 4 23 57866 0.0119 0.4263 0.35345 2017 4 24 57867 0.0130 0.4279 0.35138 2017 4 25 57868 0.0142 0.4294 0.34923 2017 4 26 57869 0.0154 0.4309 0.34714 2017 4 27 57870 0.0166 0.4324 0.34514 2017 4 28 57871 0.0178 0.4339 0.34328 2017 4 29 57872 0.0191 0.4353 0.34153 2017 4 30 57873 0.0204 0.4367 0.33986 2017 5 1 57874 0.0217 0.4382 0.33826 2017 5 2 57875 0.0230 0.4396 0.33667 2017 5 3 57876 0.0244 0.4409 0.33502 2017 5 4 57877 0.0258 0.4423 0.33331 2017 5 5 57878 0.0272 0.4436 0.33160 2017 5 6 57879 0.0286 0.4449 0.32987 2017 5 7 57880 0.0300 0.4462 0.32811 2017 5 8 57881 0.0315 0.4475 0.32632 2017 5 9 57882 0.0330 0.4487 0.32461 2017 5 10 57883 0.0345 0.4499 0.32297 2017 5 11 57884 0.0360 0.4511 0.32152 2017 5 12 57885 0.0376 0.4523 0.32019 2017 5 13 57886 0.0391 0.4534 0.31901 2017 5 14 57887 0.0407 0.4546 0.31790 2017 5 15 57888 0.0423 0.4557 0.31680 2017 5 16 57889 0.0440 0.4567 0.31571 2017 5 17 57890 0.0456 0.4578 0.31455 2017 5 18 57891 0.0473 0.4588 0.31328 2017 5 19 57892 0.0489 0.4598 0.31195 2017 5 20 57893 0.0506 0.4608 0.31053 2017 5 21 57894 0.0523 0.4617 0.30887 2017 5 22 57895 0.0541 0.4627 0.30704 2017 5 23 57896 0.0558 0.4636 0.30512 2017 5 24 57897 0.0575 0.4644 0.30317 2017 5 25 57898 0.0593 0.4653 0.30131 2017 5 26 57899 0.0611 0.4661 0.29957 2017 5 27 57900 0.0629 0.4669 0.29802 2017 5 28 57901 0.0647 0.4676 0.29654 2017 5 29 57902 0.0665 0.4684 0.29515 2017 5 30 57903 0.0683 0.4691 0.29379 2017 5 31 57904 0.0701 0.4697 0.29244 2017 6 1 57905 0.0720 0.4704 0.29113 2017 6 2 57906 0.0738 0.4710 0.28981 2017 6 3 57907 0.0757 0.4716 0.28848 2017 6 4 57908 0.0776 0.4722 0.28717 2017 6 5 57909 0.0794 0.4727 0.28589 2017 6 6 57910 0.0813 0.4732 0.28473 2017 6 7 57911 0.0832 0.4737 0.28373 2017 6 8 57912 0.0851 0.4741 0.28284 2017 6 9 57913 0.0870 0.4746 0.28205 2017 6 10 57914 0.0889 0.4750 0.28138 2017 6 11 57915 0.0908 0.4753 0.28082 2017 6 12 57916 0.0927 0.4756 0.28032 2017 6 13 57917 0.0946 0.4759 0.27974 2017 6 14 57918 0.0966 0.4762 0.27905 2017 6 15 57919 0.0985 0.4765 0.27823 2017 6 16 57920 0.1004 0.4767 0.27726 2017 6 17 57921 0.1023 0.4769 0.27611 2017 6 18 57922 0.1043 0.4770 0.27491 2017 6 19 57923 0.1062 0.4771 0.27359 2017 6 20 57924 0.1081 0.4772 0.27227 2017 6 21 57925 0.1100 0.4773 0.27100 2017 6 22 57926 0.1120 0.4773 0.26981 2017 6 23 57927 0.1139 0.4773 0.26877 2017 6 24 57928 0.1158 0.4773 0.26788 2017 6 25 57929 0.1177 0.4773 0.26701 2017 6 26 57930 0.1196 0.4772 0.26621 2017 6 27 57931 0.1215 0.4771 0.26538 2017 6 28 57932 0.1234 0.4769 0.26450 2017 6 29 57933 0.1253 0.4768 0.26359 2017 6 30 57934 0.1272 0.4766 0.26267 2017 7 1 57935 0.1291 0.4763 0.26182 2017 7 2 57936 0.1309 0.4761 0.26105 2017 7 3 57937 0.1328 0.4758 0.26043 2017 7 4 57938 0.1347 0.4755 0.25986 2017 7 5 57939 0.1365 0.4752 0.25942 2017 7 6 57940 0.1384 0.4748 0.25913 2017 7 7 57941 0.1402 0.4744 0.25888 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) 57554 -96.20 0.30 -13.27 0.02 57555 -96.52 0.30 -13.14 0.02 57556 -96.83 0.30 -13.03 0.02 57557 -97.02 0.30 -12.97 0.15 57558 -97.12 0.17 -12.96 0.15 57559 -97.12 0.17 -13.00 0.15 57560 -97.02 0.17 -13.07 0.15 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 57510 -91.4 -13.3 57511 -91.7 -13.3 57512 -91.9 -13.2 57513 -91.8 -13.1 57514 -91.8 -13.3 57515 -92.2 -13.4 57516 -92.8 -13.5 57517 -92.9 -13.5 57518 -92.6 -13.6 57519 -92.4 -13.7 57520 -92.6 -13.9 57521 -93.0 -14.0 57522 -93.4 -13.9 57523 -93.6 -13.8 57524 -93.4 -13.7 57525 -93.0 -13.6 57526 -93.0 -13.5 57527 -93.0 -13.3 57528 -93.0 -13.1 57529 -93.2 -13.2 57530 -93.3 -13.3 57531 -93.5 -13.4 57532 -93.6 -13.5 57533 -94.0 -13.6 57534 -94.4 -13.7 57535 -94.6 -13.7 57536 -94.4 -13.6 57537 -93.9 -13.4 57538 -93.6 -13.2 57539 -93.5 -12.9 57540 -93.8 -12.7 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57554 0.085 0.119 0.052 0.020 57555 0.074 0.119 0.060 0.020 57556 0.084 0.119 0.041 0.020 57557 0.112 0.119 0.019 0.150 57558 0.138 0.068 0.019 0.150 57559 0.168 0.068 0.026 0.150 57560 0.204 0.068 0.024 0.150 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 57510 0.06 0.06 57511 0.04 0.04 57512 0.04 0.04 57513 0.15 0.05 57514 0.29 -0.09 57515 0.32 0.01 57516 0.23 0.04 57517 0.21 0.06 57518 0.17 0.01 57519 0.05 0.07 57520 -0.09 0.06 57521 -0.10 0.01 57522 -0.04 0.04 57523 -0.04 0.03 57524 -0.04 0.03 57525 0.01 0.00 57526 0.01 -0.06 57527 0.10 0.00 57528 0.21 0.17 57529 0.20 0.15 57530 0.20 0.15 57531 0.15 0.12 57532 0.15 0.08 57533 0.05 0.09 57534 -0.05 0.10 57535 -0.14 0.13 57536 -0.16 0.13 57537 -0.11 0.12 57538 -0.07 0.05 57539 0.00 0.07 57540 0.03 0.04 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).