********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 21 July 2016 Vol. XXIX No. 029 ______________________________________________________________________ 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 15 57584 0.18286 .00009 0.46802 .00009 -0.220024 0.000012 16 7 16 57585 0.18493 .00009 0.46674 .00009 -0.220072 0.000013 16 7 17 57586 0.18721 .00009 0.46549 .00009 -0.220058 0.000014 16 7 18 57587 0.18966 .00009 0.46427 .00009 -0.220073 0.000021 16 7 19 57588 0.19214 .00009 0.46308 .00009 -0.220051 0.000021 16 7 20 57589 0.19434 .00009 0.46198 .00009 -0.220119 0.000024 16 7 21 57590 0.19628 .00009 0.46094 .00009 -0.220320 0.000026 _______________________________________________________________________ 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 = 0.1047 + 0.0591 cos A + 0.1060 sin A + 0.0352 cos C - 0.0018 sin C y = 0.3653 + 0.1000 cos A - 0.0564 sin A - 0.0018 cos C - 0.0352 sin C UT1-UTC = -0.2230 - 0.00145 (MJD - 57598) - (UT2-UT1) where A = 2*pi*(MJD-57590)/365.25 and C = 2*pi*(MJD-57590)/435. TAI-UTC(MJD 57591) = 36.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57590)**0.80 S t = 0.00025 (MJD-57590)**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 22 57591 0.1980 0.4599 -0.22069 2016 7 23 57592 0.1997 0.4587 -0.22117 2016 7 24 57593 0.2013 0.4575 -0.22173 2016 7 25 57594 0.2028 0.4561 -0.22232 2016 7 26 57595 0.2044 0.4548 -0.22292 2016 7 27 57596 0.2059 0.4534 -0.22350 2016 7 28 57597 0.2075 0.4520 -0.22401 2016 7 29 57598 0.2090 0.4505 -0.22442 2016 7 30 57599 0.2106 0.4490 -0.22470 2016 7 31 57600 0.2121 0.4476 -0.22487 2016 8 1 57601 0.2135 0.4461 -0.22499 2016 8 2 57602 0.2149 0.4445 -0.22517 2016 8 3 57603 0.2162 0.4430 -0.22543 2016 8 4 57604 0.2175 0.4414 -0.22577 2016 8 5 57605 0.2188 0.4397 -0.22618 2016 8 6 57606 0.2201 0.4381 -0.22664 2016 8 7 57607 0.2214 0.4364 -0.22714 2016 8 8 57608 0.2226 0.4348 -0.22765 2016 8 9 57609 0.2238 0.4331 -0.22816 2016 8 10 57610 0.2249 0.4315 -0.22863 2016 8 11 57611 0.2260 0.4298 -0.22907 2016 8 12 57612 0.2271 0.4281 -0.22948 2016 8 13 57613 0.2281 0.4263 -0.22987 2016 8 14 57614 0.2291 0.4246 -0.23025 2016 8 15 57615 0.2300 0.4228 -0.23064 2016 8 16 57616 0.2309 0.4210 -0.23109 2016 8 17 57617 0.2318 0.4192 -0.23165 2016 8 18 57618 0.2327 0.4174 -0.23235 2016 8 19 57619 0.2335 0.4155 -0.23323 2016 8 20 57620 0.2343 0.4137 -0.23427 2016 8 21 57621 0.2351 0.4118 -0.23543 2016 8 22 57622 0.2358 0.4100 -0.23664 2016 8 23 57623 0.2365 0.4081 -0.23782 2016 8 24 57624 0.2371 0.4062 -0.23892 2016 8 25 57625 0.2377 0.4043 -0.23991 2016 8 26 57626 0.2383 0.4024 -0.24079 2016 8 27 57627 0.2389 0.4004 -0.24161 2016 8 28 57628 0.2394 0.3985 -0.24240 2016 8 29 57629 0.2398 0.3966 -0.24323 2016 8 30 57630 0.2403 0.3946 -0.24413 2016 8 31 57631 0.2407 0.3927 -0.24513 2016 9 1 57632 0.2410 0.3907 -0.24625 2016 9 2 57633 0.2414 0.3887 -0.24744 2016 9 3 57634 0.2417 0.3868 -0.24869 2016 9 4 57635 0.2419 0.3848 -0.24995 2016 9 5 57636 0.2421 0.3828 -0.25119 2016 9 6 57637 0.2423 0.3808 -0.25239 2016 9 7 57638 0.2425 0.3789 -0.25353 2016 9 8 57639 0.2426 0.3769 -0.25459 2016 9 9 57640 0.2427 0.3749 -0.25560 2016 9 10 57641 0.2427 0.3729 -0.25658 2016 9 11 57642 0.2427 0.3709 -0.25756 2016 9 12 57643 0.2427 0.3689 -0.25858 2016 9 13 57644 0.2426 0.3669 -0.25970 2016 9 14 57645 0.2425 0.3649 -0.26097 2016 9 15 57646 0.2423 0.3629 -0.26241 2016 9 16 57647 0.2422 0.3609 -0.26404 2016 9 17 57648 0.2419 0.3590 -0.26584 2016 9 18 57649 0.2417 0.3570 -0.26773 2016 9 19 57650 0.2414 0.3550 -0.26962 2016 9 20 57651 0.2411 0.3530 -0.27142 2016 9 21 57652 0.2407 0.3511 -0.27308 2016 9 22 57653 0.2403 0.3491 -0.27459 2016 9 23 57654 0.2399 0.3471 -0.27598 2016 9 24 57655 0.2394 0.3452 -0.27728 2016 9 25 57656 0.2389 0.3432 -0.27857 2016 9 26 57657 0.2384 0.3413 -0.27989 2016 9 27 57658 0.2378 0.3394 -0.28128 2016 9 28 57659 0.2372 0.3375 -0.28274 2016 9 29 57660 0.2366 0.3355 -0.28429 2016 9 30 57661 0.2359 0.3336 -0.28588 2016 10 1 57662 0.2352 0.3318 -0.28749 2016 10 2 57663 0.2345 0.3299 -0.28909 2016 10 3 57664 0.2337 0.3280 -0.29065 2016 10 4 57665 0.2329 0.3261 -0.29215 2016 10 5 57666 0.2320 0.3243 -0.29359 2016 10 6 57667 0.2312 0.3225 -0.29495 2016 10 7 57668 0.2303 0.3206 -0.29627 2016 10 8 57669 0.2293 0.3188 -0.29758 2016 10 9 57670 0.2284 0.3171 -0.29891 2016 10 10 57671 0.2273 0.3153 -0.30032 2016 10 11 57672 0.2263 0.3135 -0.30185 2016 10 12 57673 0.2252 0.3118 -0.30355 2016 10 13 57674 0.2241 0.3100 -0.30544 2016 10 14 57675 0.2230 0.3083 -0.30753 2016 10 15 57676 0.2219 0.3066 -0.30976 2016 10 16 57677 0.2207 0.3050 -0.31206 2016 10 17 57678 0.2195 0.3033 -0.31432 2016 10 18 57679 0.2182 0.3017 -0.31645 2016 10 19 57680 0.2169 0.3000 -0.31842 2016 10 20 57681 0.2156 0.2984 -0.32023 2016 10 21 57682 0.2143 0.2969 -0.32193 2016 10 22 57683 0.2129 0.2953 -0.32356 2016 10 23 57684 0.2115 0.2937 -0.32520 2016 10 24 57685 0.2101 0.2922 -0.32688 2016 10 25 57686 0.2087 0.2907 -0.32861 2016 10 26 57687 0.2072 0.2893 -0.33039 2016 10 27 57688 0.2057 0.2878 -0.33221 2016 10 28 57689 0.2042 0.2864 -0.33403 2016 10 29 57690 0.2026 0.2850 -0.33583 2016 10 30 57691 0.2011 0.2836 -0.33759 2016 10 31 57692 0.1995 0.2822 -0.33929 2016 11 1 57693 0.1979 0.2809 -0.34091 2016 11 2 57694 0.1962 0.2796 -0.34245 2016 11 3 57695 0.1946 0.2783 -0.34392 2016 11 4 57696 0.1929 0.2770 -0.34535 2016 11 5 57697 0.1912 0.2758 -0.34678 2016 11 6 57698 0.1894 0.2746 -0.34826 2016 11 7 57699 0.1877 0.2734 -0.34978 2016 11 8 57700 0.1859 0.2722 -0.35144 2016 11 9 57701 0.1841 0.2711 -0.35326 2016 11 10 57702 0.1823 0.2700 -0.35526 2016 11 11 57703 0.1805 0.2689 -0.35743 2016 11 12 57704 0.1786 0.2679 -0.35971 2016 11 13 57705 0.1768 0.2669 -0.36201 2016 11 14 57706 0.1749 0.2659 -0.36425 2016 11 15 57707 0.1730 0.2649 -0.36636 2016 11 16 57708 0.1711 0.2640 -0.36830 2016 11 17 57709 0.1691 0.2631 -0.37011 2016 11 18 57710 0.1672 0.2622 -0.37182 2016 11 19 57711 0.1652 0.2614 -0.37351 2016 11 20 57712 0.1633 0.2605 -0.37522 2016 11 21 57713 0.1613 0.2598 -0.37697 2016 11 22 57714 0.1593 0.2590 -0.37875 2016 11 23 57715 0.1573 0.2583 -0.38056 2016 11 24 57716 0.1552 0.2576 -0.38237 2016 11 25 57717 0.1532 0.2569 -0.38416 2016 11 26 57718 0.1512 0.2563 -0.38590 2016 11 27 57719 0.1491 0.2557 -0.38756 2016 11 28 57720 0.1470 0.2551 -0.38913 2016 11 29 57721 0.1450 0.2546 -0.39062 2016 11 30 57722 0.1429 0.2541 -0.39201 2016 12 1 57723 0.1408 0.2536 -0.39335 2016 12 2 57724 0.1387 0.2532 -0.39465 2016 12 3 57725 0.1366 0.2528 -0.39596 2016 12 4 57726 0.1345 0.2524 -0.39733 2016 12 5 57727 0.1324 0.2521 -0.39879 2016 12 6 57728 0.1302 0.2517 -0.40039 2016 12 7 57729 0.1281 0.2515 -0.40213 2016 12 8 57730 0.1260 0.2512 -0.40402 2016 12 9 57731 0.1239 0.2510 -0.40603 2016 12 10 57732 0.1217 0.2508 -0.40810 2016 12 11 57733 0.1196 0.2507 -0.41014 2016 12 12 57734 0.1175 0.2506 -0.41210 2016 12 13 57735 0.1153 0.2505 -0.41393 2016 12 14 57736 0.1132 0.2504 -0.41561 2016 12 15 57737 0.1111 0.2504 -0.41719 2016 12 16 57738 0.1089 0.2504 -0.41874 2016 12 17 57739 0.1068 0.2505 -0.42029 2016 12 18 57740 0.1047 0.2506 -0.42188 2016 12 19 57741 0.1025 0.2507 -0.42352 2016 12 20 57742 0.1004 0.2508 -0.42518 2016 12 21 57743 0.0983 0.2510 -0.42685 2016 12 22 57744 0.0962 0.2512 -0.42849 2016 12 23 57745 0.0941 0.2515 -0.43008 2016 12 24 57746 0.0920 0.2517 -0.43160 2016 12 25 57747 0.0899 0.2520 -0.43303 2016 12 26 57748 0.0878 0.2524 -0.43436 2016 12 27 57749 0.0857 0.2528 -0.43561 2016 12 28 57750 0.0837 0.2532 -0.43679 2016 12 29 57751 0.0816 0.2536 -0.43793 2016 12 30 57752 0.0795 0.2541 -0.43907 2016 12 31 57753 0.0775 0.2546 -0.44025 2017 1 1 57754 0.0755 0.2551 0.55848 2017 1 2 57755 0.0734 0.2557 0.55709 2017 1 3 57756 0.0714 0.2563 0.55556 2017 1 4 57757 0.0694 0.2569 0.55389 2017 1 5 57758 0.0675 0.2575 0.55212 2017 1 6 57759 0.0655 0.2582 0.55029 2017 1 7 57760 0.0635 0.2589 0.54846 2017 1 8 57761 0.0616 0.2597 0.54668 2017 1 9 57762 0.0597 0.2605 0.54502 2017 1 10 57763 0.0578 0.2613 0.54347 2017 1 11 57764 0.0559 0.2621 0.54203 2017 1 12 57765 0.0540 0.2630 0.54064 2017 1 13 57766 0.0521 0.2639 0.53924 2017 1 14 57767 0.0503 0.2648 0.53779 2017 1 15 57768 0.0485 0.2657 0.53628 2017 1 16 57769 0.0466 0.2667 0.53472 2017 1 17 57770 0.0449 0.2677 0.53314 2017 1 18 57771 0.0431 0.2688 0.53158 2017 1 19 57772 0.0413 0.2698 0.53006 2017 1 20 57773 0.0396 0.2709 0.52861 2017 1 21 57774 0.0379 0.2720 0.52725 2017 1 22 57775 0.0362 0.2732 0.52598 2017 1 23 57776 0.0346 0.2743 0.52481 2017 1 24 57777 0.0329 0.2755 0.52371 2017 1 25 57778 0.0313 0.2767 0.52266 2017 1 26 57779 0.0297 0.2780 0.52162 2017 1 27 57780 0.0282 0.2792 0.52054 2017 1 28 57781 0.0266 0.2805 0.51939 2017 1 29 57782 0.0251 0.2818 0.51811 2017 1 30 57783 0.0236 0.2832 0.51670 2017 1 31 57784 0.0221 0.2845 0.51514 2017 2 1 57785 0.0207 0.2859 0.51346 2017 2 2 57786 0.0193 0.2873 0.51172 2017 2 3 57787 0.0179 0.2888 0.50996 2017 2 4 57788 0.0165 0.2902 0.50822 2017 2 5 57789 0.0152 0.2917 0.50653 2017 2 6 57790 0.0139 0.2932 0.50491 2017 2 7 57791 0.0126 0.2947 0.50333 2017 2 8 57792 0.0113 0.2962 0.50174 2017 2 9 57793 0.0101 0.2978 0.50008 2017 2 10 57794 0.0089 0.2993 0.49830 2017 2 11 57795 0.0078 0.3009 0.49638 2017 2 12 57796 0.0066 0.3025 0.49433 2017 2 13 57797 0.0055 0.3042 0.49218 2017 2 14 57798 0.0045 0.3058 0.48997 2017 2 15 57799 0.0034 0.3075 0.48773 2017 2 16 57800 0.0024 0.3091 0.48551 2017 2 17 57801 0.0014 0.3108 0.48332 2017 2 18 57802 0.0005 0.3125 0.48119 2017 2 19 57803 -0.0004 0.3143 0.47912 2017 2 20 57804 -0.0013 0.3160 0.47711 2017 2 21 57805 -0.0022 0.3177 0.47516 2017 2 22 57806 -0.0030 0.3195 0.47324 2017 2 23 57807 -0.0038 0.3213 0.47133 2017 2 24 57808 -0.0046 0.3231 0.46937 2017 2 25 57809 -0.0053 0.3249 0.46733 2017 2 26 57810 -0.0060 0.3267 0.46519 2017 2 27 57811 -0.0066 0.3285 0.46294 2017 2 28 57812 -0.0072 0.3303 0.46059 2017 3 1 57813 -0.0078 0.3322 0.45823 2017 3 2 57814 -0.0084 0.3340 0.45592 2017 3 3 57815 -0.0089 0.3359 0.45362 2017 3 4 57816 -0.0094 0.3377 0.45153 2017 3 5 57817 -0.0098 0.3396 0.44952 2017 3 6 57818 -0.0103 0.3415 0.44755 2017 3 7 57819 -0.0106 0.3434 0.44568 2017 3 8 57820 -0.0110 0.3453 0.44384 2017 3 9 57821 -0.0113 0.3472 0.44198 2017 3 10 57822 -0.0116 0.3491 0.44014 2017 3 11 57823 -0.0118 0.3510 0.43820 2017 3 12 57824 -0.0120 0.3529 0.43617 2017 3 13 57825 -0.0122 0.3548 0.43407 2017 3 14 57826 -0.0124 0.3567 0.43196 2017 3 15 57827 -0.0125 0.3586 0.42989 2017 3 16 57828 -0.0125 0.3606 0.42779 2017 3 17 57829 -0.0126 0.3625 0.42579 2017 3 18 57830 -0.0126 0.3644 0.42387 2017 3 19 57831 -0.0125 0.3663 0.42198 2017 3 20 57832 -0.0125 0.3683 0.42016 2017 3 21 57833 -0.0124 0.3702 0.41846 2017 3 22 57834 -0.0122 0.3721 0.41677 2017 3 23 57835 -0.0121 0.3740 0.41508 2017 3 24 57836 -0.0118 0.3759 0.41326 2017 3 25 57837 -0.0116 0.3779 0.41128 2017 3 26 57838 -0.0113 0.3798 0.40911 2017 3 27 57839 -0.0110 0.3817 0.40681 2017 3 28 57840 -0.0107 0.3836 0.40441 2017 3 29 57841 -0.0103 0.3855 0.40199 2017 3 30 57842 -0.0099 0.3874 0.39969 2017 3 31 57843 -0.0094 0.3893 0.39758 2017 4 1 57844 -0.0090 0.3911 0.39565 2017 4 2 57845 -0.0084 0.3930 0.39386 2017 4 3 57846 -0.0079 0.3949 0.39225 2017 4 4 57847 -0.0073 0.3967 0.39072 2017 4 5 57848 -0.0067 0.3986 0.38927 2017 4 6 57849 -0.0061 0.4004 0.38773 2017 4 7 57850 -0.0054 0.4023 0.38614 2017 4 8 57851 -0.0047 0.4041 0.38443 2017 4 9 57852 -0.0039 0.4059 0.38260 2017 4 10 57853 -0.0032 0.4077 0.38069 2017 4 11 57854 -0.0023 0.4095 0.37877 2017 4 12 57855 -0.0015 0.4112 0.37690 2017 4 13 57856 -0.0006 0.4130 0.37507 2017 4 14 57857 0.0003 0.4147 0.37342 2017 4 15 57858 0.0012 0.4165 0.37188 2017 4 16 57859 0.0022 0.4182 0.37045 2017 4 17 57860 0.0031 0.4199 0.36910 2017 4 18 57861 0.0042 0.4216 0.36779 2017 4 19 57862 0.0052 0.4233 0.36644 2017 4 20 57863 0.0063 0.4249 0.36502 2017 4 21 57864 0.0074 0.4266 0.36349 2017 4 22 57865 0.0085 0.4282 0.36188 2017 4 23 57866 0.0097 0.4298 0.36013 2017 4 24 57867 0.0109 0.4314 0.35819 2017 4 25 57868 0.0121 0.4330 0.35609 2017 4 26 57869 0.0134 0.4345 0.35392 2017 4 27 57870 0.0146 0.4360 0.35183 2017 4 28 57871 0.0159 0.4376 0.34984 2017 4 29 57872 0.0173 0.4391 0.34802 2017 4 30 57873 0.0186 0.4405 0.34627 2017 5 1 57874 0.0200 0.4420 0.34463 2017 5 2 57875 0.0214 0.4434 0.34304 2017 5 3 57876 0.0228 0.4448 0.34146 2017 5 4 57877 0.0243 0.4462 0.33984 2017 5 5 57878 0.0257 0.4476 0.33818 2017 5 6 57879 0.0272 0.4489 0.33652 2017 5 7 57880 0.0287 0.4503 0.33487 2017 5 8 57881 0.0303 0.4516 0.33320 2017 5 9 57882 0.0318 0.4528 0.33151 2017 5 10 57883 0.0334 0.4541 0.32987 2017 5 11 57884 0.0350 0.4553 0.32842 2017 5 12 57885 0.0366 0.4565 0.32719 2017 5 13 57886 0.0383 0.4577 0.32612 2017 5 14 57887 0.0400 0.4589 0.32505 2017 5 15 57888 0.0416 0.4600 0.32395 2017 5 16 57889 0.0433 0.4611 0.32292 2017 5 17 57890 0.0450 0.4622 0.32188 2017 5 18 57891 0.0468 0.4632 0.32079 2017 5 19 57892 0.0485 0.4643 0.31956 2017 5 20 57893 0.0503 0.4653 0.31825 2017 5 21 57894 0.0521 0.4662 0.31676 2017 5 22 57895 0.0539 0.4672 0.31515 2017 5 23 57896 0.0557 0.4681 0.31349 2017 5 24 57897 0.0575 0.4690 0.31193 2017 5 25 57898 0.0594 0.4698 0.31049 2017 5 26 57899 0.0612 0.4707 0.30920 2017 5 27 57900 0.0631 0.4715 0.30801 2017 5 28 57901 0.0650 0.4722 0.30688 2017 5 29 57902 0.0669 0.4730 0.30579 2017 5 30 57903 0.0688 0.4737 0.30466 2017 5 31 57904 0.0707 0.4744 0.30345 2017 6 1 57905 0.0726 0.4751 0.30220 2017 6 2 57906 0.0745 0.4757 0.30095 2017 6 3 57907 0.0765 0.4763 0.29973 2017 6 4 57908 0.0784 0.4769 0.29851 2017 6 5 57909 0.0804 0.4774 0.29731 2017 6 6 57910 0.0823 0.4779 0.29620 2017 6 7 57911 0.0843 0.4784 0.29519 2017 6 8 57912 0.0863 0.4788 0.29437 2017 6 9 57913 0.0883 0.4793 0.29367 2017 6 10 57914 0.0903 0.4797 0.29310 2017 6 11 57915 0.0923 0.4800 0.29259 2017 6 12 57916 0.0942 0.4804 0.29205 2017 6 13 57917 0.0962 0.4806 0.29149 2017 6 14 57918 0.0982 0.4809 0.29083 2017 6 15 57919 0.1002 0.4812 0.29005 2017 6 16 57920 0.1023 0.4814 0.28919 2017 6 17 57921 0.1043 0.4815 0.28826 2017 6 18 57922 0.1063 0.4817 0.28712 2017 6 19 57923 0.1083 0.4818 0.28584 2017 6 20 57924 0.1103 0.4819 0.28451 2017 6 21 57925 0.1123 0.4819 0.28318 2017 6 22 57926 0.1143 0.4820 0.28195 2017 6 23 57927 0.1163 0.4820 0.28083 2017 6 24 57928 0.1183 0.4819 0.27986 2017 6 25 57929 0.1203 0.4819 0.27890 2017 6 26 57930 0.1223 0.4818 0.27798 2017 6 27 57931 0.1242 0.4816 0.27705 2017 6 28 57932 0.1262 0.4815 0.27609 2017 6 29 57933 0.1282 0.4813 0.27517 2017 6 30 57934 0.1301 0.4811 0.27425 2017 7 1 57935 0.1321 0.4808 0.27335 2017 7 2 57936 0.1341 0.4805 0.27249 2017 7 3 57937 0.1360 0.4802 0.27168 2017 7 4 57938 0.1379 0.4799 0.27100 2017 7 5 57939 0.1399 0.4795 0.27048 2017 7 6 57940 0.1418 0.4791 0.27006 2017 7 7 57941 0.1437 0.4787 0.26972 2017 7 8 57942 0.1456 0.4782 0.26946 2017 7 9 57943 0.1475 0.4777 0.26927 2017 7 10 57944 0.1493 0.4772 0.26910 2017 7 11 57945 0.1512 0.4767 0.26881 2017 7 12 57946 0.1530 0.4761 0.26836 2017 7 13 57947 0.1549 0.4755 0.26776 2017 7 14 57948 0.1567 0.4749 0.26700 2017 7 15 57949 0.1585 0.4742 0.26608 2017 7 16 57950 0.1603 0.4736 0.26513 2017 7 17 57951 0.1621 0.4728 0.26410 2017 7 18 57952 0.1638 0.4721 0.26312 2017 7 19 57953 0.1656 0.4713 0.26220 2017 7 20 57954 0.1673 0.4705 0.26136 2017 7 21 57955 0.1690 0.4697 0.26064 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) 57568 -97.81 0.30 -12.50 0.15 57569 -98.44 0.30 -12.49 0.15 57570 -99.23 0.30 -12.75 0.15 57571 -99.87 0.30 -13.13 0.15 57572 -100.15 0.30 -13.40 0.01 57573 -100.06 0.30 -13.40 0.01 57574 -99.69 0.30 -13.21 0.01 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57568 0.068 0.119 -0.093 0.150 57569 0.057 0.119 -0.088 0.150 57570 0.044 0.119 -0.082 0.150 57571 0.040 0.119 -0.066 0.150 57572 0.056 0.119 -0.072 0.010 57573 0.074 0.119 -0.086 0.010 57574 0.094 0.119 -0.082 0.010 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).