********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 18 August 2016 Vol. XXIX No. 033 ______________________________________________________________________ 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 = -0.3 seconds beginning 01 Sep 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 8 12 57612 0.22445 .00009 0.43206 .00009 -0.232075 0.000010 16 8 13 57613 0.22543 .00009 0.42980 .00009 -0.232434 0.000010 16 8 14 57614 0.22600 .00009 0.42745 .00009 -0.232726 0.000009 16 8 15 57615 0.22624 .00009 0.42497 .00009 -0.232967 0.000021 16 8 16 57616 0.22651 .00009 0.42248 .00009 -0.233357 0.000021 16 8 17 57617 0.22674 .00009 0.42023 .00009 -0.233795 0.000023 16 8 18 57618 0.22689 .00009 0.41817 .00009 -0.234489 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 = 0.1017 + 0.0951 cos A + 0.0547 sin A + 0.0311 cos C - 0.0028 sin C y = 0.3689 + 0.0536 cos A - 0.0909 sin A - 0.0028 cos C - 0.0311 sin C UT1-UTC = -0.2606 - 0.00142 (MJD - 57626) - (UT2-UT1) where A = 2*pi*(MJD-57618)/365.25 and C = 2*pi*(MJD-57618)/435. TAI-UTC(MJD 57619) = 36.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57618)**0.80 S t = 0.00025 (MJD-57618)**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 8 19 57619 0.2272 0.4162 -0.23537 2016 8 20 57620 0.2276 0.4141 -0.23637 2016 8 21 57621 0.2282 0.4121 -0.23747 2016 8 22 57622 0.2289 0.4101 -0.23862 2016 8 23 57623 0.2296 0.4082 -0.23977 2016 8 24 57624 0.2303 0.4062 -0.24083 2016 8 25 57625 0.2309 0.4043 -0.24174 2016 8 26 57626 0.2315 0.4024 -0.24251 2016 8 27 57627 0.2320 0.4005 -0.24319 2016 8 28 57628 0.2325 0.3987 -0.24386 2016 8 29 57629 0.2330 0.3968 -0.24453 2016 8 30 57630 0.2334 0.3949 -0.24526 2016 8 31 57631 0.2339 0.3931 -0.24608 2016 9 1 57632 0.2343 0.3912 -0.24698 2016 9 2 57633 0.2346 0.3893 -0.24794 2016 9 3 57634 0.2350 0.3874 -0.24897 2016 9 4 57635 0.2353 0.3855 -0.25004 2016 9 5 57636 0.2355 0.3836 -0.25110 2016 9 6 57637 0.2357 0.3817 -0.25212 2016 9 7 57638 0.2359 0.3798 -0.25309 2016 9 8 57639 0.2360 0.3779 -0.25399 2016 9 9 57640 0.2361 0.3760 -0.25484 2016 9 10 57641 0.2362 0.3741 -0.25564 2016 9 11 57642 0.2363 0.3722 -0.25643 2016 9 12 57643 0.2363 0.3703 -0.25724 2016 9 13 57644 0.2363 0.3685 -0.25813 2016 9 14 57645 0.2363 0.3666 -0.25916 2016 9 15 57646 0.2362 0.3647 -0.26038 2016 9 16 57647 0.2361 0.3629 -0.26179 2016 9 17 57648 0.2359 0.3610 -0.26336 2016 9 18 57649 0.2357 0.3591 -0.26504 2016 9 19 57650 0.2355 0.3573 -0.26674 2016 9 20 57651 0.2353 0.3554 -0.26836 2016 9 21 57652 0.2350 0.3536 -0.26986 2016 9 22 57653 0.2347 0.3518 -0.27123 2016 9 23 57654 0.2343 0.3499 -0.27250 2016 9 24 57655 0.2339 0.3481 -0.27371 2016 9 25 57656 0.2335 0.3463 -0.27491 2016 9 26 57657 0.2330 0.3445 -0.27615 2016 9 27 57658 0.2325 0.3426 -0.27746 2016 9 28 57659 0.2320 0.3408 -0.27884 2016 9 29 57660 0.2314 0.3391 -0.28028 2016 9 30 57661 0.2308 0.3373 -0.28177 2016 10 1 57662 0.2302 0.3355 -0.28326 2016 10 2 57663 0.2296 0.3337 -0.28474 2016 10 3 57664 0.2289 0.3320 -0.28618 2016 10 4 57665 0.2281 0.3303 -0.28756 2016 10 5 57666 0.2274 0.3285 -0.28887 2016 10 6 57667 0.2266 0.3268 -0.29014 2016 10 7 57668 0.2258 0.3251 -0.29137 2016 10 8 57669 0.2249 0.3234 -0.29259 2016 10 9 57670 0.2241 0.3217 -0.29386 2016 10 10 57671 0.2232 0.3201 -0.29521 2016 10 11 57672 0.2222 0.3184 -0.29670 2016 10 12 57673 0.2213 0.3168 -0.29837 2016 10 13 57674 0.2203 0.3151 -0.30026 2016 10 14 57675 0.2192 0.3135 -0.30235 2016 10 15 57676 0.2182 0.3119 -0.30460 2016 10 16 57677 0.2171 0.3104 -0.30692 2016 10 17 57678 0.2160 0.3088 -0.30921 2016 10 18 57679 0.2148 0.3073 -0.31139 2016 10 19 57680 0.2137 0.3057 -0.31340 2016 10 20 57681 0.2125 0.3042 -0.31525 2016 10 21 57682 0.2112 0.3027 -0.31698 2016 10 22 57683 0.2100 0.3013 -0.31866 2016 10 23 57684 0.2087 0.2998 -0.32034 2016 10 24 57685 0.2074 0.2984 -0.32205 2016 10 25 57686 0.2061 0.2970 -0.32381 2016 10 26 57687 0.2047 0.2956 -0.32561 2016 10 27 57688 0.2033 0.2942 -0.32745 2016 10 28 57689 0.2019 0.2929 -0.32929 2016 10 29 57690 0.2005 0.2915 -0.33110 2016 10 30 57691 0.1991 0.2902 -0.33287 2016 10 31 57692 0.1976 0.2890 -0.33455 2016 11 1 57693 0.1961 0.2877 -0.33615 2016 11 2 57694 0.1946 0.2865 -0.33766 2016 11 3 57695 0.1930 0.2852 -0.33910 2016 11 4 57696 0.1915 0.2840 -0.34049 2016 11 5 57697 0.1899 0.2829 -0.34186 2016 11 6 57698 0.1883 0.2817 -0.34327 2016 11 7 57699 0.1867 0.2806 -0.34475 2016 11 8 57700 0.1850 0.2795 -0.34637 2016 11 9 57701 0.1834 0.2785 -0.34814 2016 11 10 57702 0.1817 0.2774 -0.35010 2016 11 11 57703 0.1800 0.2764 -0.35222 2016 11 12 57704 0.1783 0.2754 -0.35445 2016 11 13 57705 0.1766 0.2744 -0.35671 2016 11 14 57706 0.1748 0.2735 -0.35890 2016 11 15 57707 0.1731 0.2726 -0.36095 2016 11 16 57708 0.1713 0.2717 -0.36284 2016 11 17 57709 0.1695 0.2708 -0.36459 2016 11 18 57710 0.1677 0.2700 -0.36625 2016 11 19 57711 0.1658 0.2692 -0.36789 2016 11 20 57712 0.1640 0.2684 -0.36953 2016 11 21 57713 0.1622 0.2677 -0.37122 2016 11 22 57714 0.1603 0.2670 -0.37295 2016 11 23 57715 0.1584 0.2663 -0.37471 2016 11 24 57716 0.1565 0.2656 -0.37646 2016 11 25 57717 0.1547 0.2650 -0.37820 2016 11 26 57718 0.1527 0.2644 -0.37988 2016 11 27 57719 0.1508 0.2638 -0.38148 2016 11 28 57720 0.1489 0.2633 -0.38299 2016 11 29 57721 0.1470 0.2627 -0.38441 2016 11 30 57722 0.1450 0.2623 -0.38574 2016 12 1 57723 0.1431 0.2618 -0.38701 2016 12 2 57724 0.1411 0.2614 -0.38824 2016 12 3 57725 0.1392 0.2610 -0.38947 2016 12 4 57726 0.1372 0.2606 -0.39077 2016 12 5 57727 0.1352 0.2603 -0.39213 2016 12 6 57728 0.1333 0.2600 -0.39363 2016 12 7 57729 0.1313 0.2597 -0.39528 2016 12 8 57730 0.1293 0.2595 -0.39708 2016 12 9 57731 0.1273 0.2592 -0.39899 2016 12 10 57732 0.1253 0.2591 -0.40095 2016 12 11 57733 0.1233 0.2589 -0.40290 2016 12 12 57734 0.1213 0.2588 -0.40476 2016 12 13 57735 0.1193 0.2587 -0.40648 2016 12 14 57736 0.1173 0.2586 -0.40807 2016 12 15 57737 0.1153 0.2586 -0.40955 2016 12 16 57738 0.1133 0.2586 -0.41099 2016 12 17 57739 0.1114 0.2586 -0.41243 2016 12 18 57740 0.1094 0.2587 -0.41392 2016 12 19 57741 0.1074 0.2588 -0.41546 2016 12 20 57742 0.1054 0.2589 -0.41702 2016 12 21 57743 0.1034 0.2591 -0.41859 2016 12 22 57744 0.1014 0.2592 -0.42014 2016 12 23 57745 0.0995 0.2595 -0.42163 2016 12 24 57746 0.0975 0.2597 -0.42306 2016 12 25 57747 0.0955 0.2600 -0.42440 2016 12 26 57748 0.0936 0.2603 -0.42565 2016 12 27 57749 0.0917 0.2606 -0.42681 2016 12 28 57750 0.0897 0.2610 -0.42791 2016 12 29 57751 0.0878 0.2614 -0.42898 2016 12 30 57752 0.0859 0.2618 -0.43005 2016 12 31 57753 0.0840 0.2622 -0.43116 2017 1 1 57754 0.0821 0.2627 0.56763 2017 1 2 57755 0.0802 0.2632 0.56629 2017 1 3 57756 0.0783 0.2638 0.56481 2017 1 4 57757 0.0764 0.2643 0.56319 2017 1 5 57758 0.0746 0.2649 0.56145 2017 1 6 57759 0.0727 0.2656 0.55965 2017 1 7 57760 0.0709 0.2662 0.55783 2017 1 8 57761 0.0691 0.2669 0.55607 2017 1 9 57762 0.0673 0.2676 0.55440 2017 1 10 57763 0.0655 0.2683 0.55285 2017 1 11 57764 0.0637 0.2691 0.55139 2017 1 12 57765 0.0619 0.2699 0.54998 2017 1 13 57766 0.0602 0.2707 0.54854 2017 1 14 57767 0.0585 0.2716 0.54706 2017 1 15 57768 0.0568 0.2724 0.54549 2017 1 16 57769 0.0551 0.2733 0.54387 2017 1 17 57770 0.0534 0.2743 0.54223 2017 1 18 57771 0.0517 0.2752 0.54058 2017 1 19 57772 0.0501 0.2762 0.53898 2017 1 20 57773 0.0485 0.2772 0.53744 2017 1 21 57774 0.0469 0.2782 0.53597 2017 1 22 57775 0.0453 0.2793 0.53460 2017 1 23 57776 0.0438 0.2804 0.53331 2017 1 24 57777 0.0422 0.2815 0.53208 2017 1 25 57778 0.0407 0.2826 0.53089 2017 1 26 57779 0.0392 0.2837 0.52970 2017 1 27 57780 0.0377 0.2849 0.52847 2017 1 28 57781 0.0363 0.2861 0.52715 2017 1 29 57782 0.0349 0.2873 0.52570 2017 1 30 57783 0.0335 0.2885 0.52409 2017 1 31 57784 0.0321 0.2898 0.52233 2017 2 1 57785 0.0307 0.2911 0.52045 2017 2 2 57786 0.0294 0.2924 0.51851 2017 2 3 57787 0.0281 0.2937 0.51656 2017 2 4 57788 0.0268 0.2950 0.51465 2017 2 5 57789 0.0256 0.2964 0.51285 2017 2 6 57790 0.0244 0.2978 0.51115 2017 2 7 57791 0.0232 0.2992 0.50955 2017 2 8 57792 0.0220 0.3006 0.50799 2017 2 9 57793 0.0208 0.3020 0.50644 2017 2 10 57794 0.0197 0.3035 0.50483 2017 2 11 57795 0.0186 0.3049 0.50313 2017 2 12 57796 0.0176 0.3064 0.50136 2017 2 13 57797 0.0165 0.3079 0.49953 2017 2 14 57798 0.0155 0.3095 0.49768 2017 2 15 57799 0.0146 0.3110 0.49587 2017 2 16 57800 0.0136 0.3125 0.49413 2017 2 17 57801 0.0127 0.3141 0.49248 2017 2 18 57802 0.0118 0.3157 0.49094 2017 2 19 57803 0.0110 0.3173 0.48952 2017 2 20 57804 0.0101 0.3189 0.48820 2017 2 21 57805 0.0093 0.3205 0.48696 2017 2 22 57806 0.0086 0.3221 0.48576 2017 2 23 57807 0.0078 0.3238 0.48456 2017 2 24 57808 0.0071 0.3254 0.48329 2017 2 25 57809 0.0064 0.3271 0.48189 2017 2 26 57810 0.0058 0.3288 0.48031 2017 2 27 57811 0.0052 0.3305 0.47852 2017 2 28 57812 0.0046 0.3321 0.47654 2017 3 1 57813 0.0041 0.3338 0.47441 2017 3 2 57814 0.0035 0.3356 0.47223 2017 3 3 57815 0.0031 0.3373 0.47008 2017 3 4 57816 0.0026 0.3390 0.46803 2017 3 5 57817 0.0022 0.3407 0.46610 2017 3 6 57818 0.0018 0.3425 0.46430 2017 3 7 57819 0.0014 0.3442 0.46258 2017 3 8 57820 0.0011 0.3460 0.46091 2017 3 9 57821 0.0008 0.3477 0.45921 2017 3 10 57822 0.0006 0.3495 0.45745 2017 3 11 57823 0.0003 0.3513 0.45561 2017 3 12 57824 0.0001 0.3531 0.45368 2017 3 13 57825 0.0000 0.3548 0.45169 2017 3 14 57826 -0.0002 0.3566 0.44968 2017 3 15 57827 -0.0002 0.3584 0.44768 2017 3 16 57828 -0.0003 0.3602 0.44575 2017 3 17 57829 -0.0003 0.3619 0.44392 2017 3 18 57830 -0.0003 0.3637 0.44220 2017 3 19 57831 -0.0003 0.3655 0.44061 2017 3 20 57832 -0.0002 0.3673 0.43911 2017 3 21 57833 -0.0001 0.3691 0.43765 2017 3 22 57834 0.0000 0.3709 0.43618 2017 3 23 57835 0.0002 0.3726 0.43464 2017 3 24 57836 0.0004 0.3744 0.43295 2017 3 25 57837 0.0006 0.3762 0.43105 2017 3 26 57838 0.0009 0.3779 0.42891 2017 3 27 57839 0.0012 0.3797 0.42655 2017 3 28 57840 0.0015 0.3815 0.42398 2017 3 29 57841 0.0018 0.3832 0.42130 2017 3 30 57842 0.0022 0.3850 0.41861 2017 3 31 57843 0.0027 0.3867 0.41606 2017 4 1 57844 0.0031 0.3885 0.41363 2017 4 2 57845 0.0036 0.3902 0.41135 2017 4 3 57846 0.0041 0.3919 0.40914 2017 4 4 57847 0.0047 0.3936 0.40699 2017 4 5 57848 0.0052 0.3953 0.40494 2017 4 6 57849 0.0059 0.3970 0.40275 2017 4 7 57850 0.0065 0.3987 0.40051 2017 4 8 57851 0.0072 0.4004 0.39807 2017 4 9 57852 0.0079 0.4021 0.39563 2017 4 10 57853 0.0086 0.4037 0.39311 2017 4 11 57854 0.0094 0.4054 0.39056 2017 4 12 57855 0.0101 0.4070 0.38810 2017 4 13 57856 0.0110 0.4087 0.38568 2017 4 14 57857 0.0118 0.4103 0.38335 2017 4 15 57858 0.0127 0.4119 0.38106 2017 4 16 57859 0.0136 0.4135 0.37886 2017 4 17 57860 0.0145 0.4150 0.37674 2017 4 18 57861 0.0155 0.4166 0.37467 2017 4 19 57862 0.0165 0.4181 0.37261 2017 4 20 57863 0.0175 0.4197 0.37054 2017 4 21 57864 0.0185 0.4212 0.36838 2017 4 22 57865 0.0196 0.4227 0.36610 2017 4 23 57866 0.0207 0.4242 0.36373 2017 4 24 57867 0.0218 0.4256 0.36127 2017 4 25 57868 0.0230 0.4271 0.35875 2017 4 26 57869 0.0242 0.4285 0.35630 2017 4 27 57870 0.0254 0.4299 0.35402 2017 4 28 57871 0.0266 0.4313 0.35180 2017 4 29 57872 0.0278 0.4327 0.34987 2017 4 30 57873 0.0291 0.4340 0.34805 2017 5 1 57874 0.0304 0.4354 0.34624 2017 5 2 57875 0.0317 0.4367 0.34450 2017 5 3 57876 0.0330 0.4380 0.34276 2017 5 4 57877 0.0344 0.4393 0.34099 2017 5 5 57878 0.0358 0.4405 0.33927 2017 5 6 57879 0.0372 0.4418 0.33752 2017 5 7 57880 0.0386 0.4430 0.33575 2017 5 8 57881 0.0401 0.4442 0.33399 2017 5 9 57882 0.0415 0.4454 0.33230 2017 5 10 57883 0.0430 0.4465 0.33070 2017 5 11 57884 0.0445 0.4476 0.32912 2017 5 12 57885 0.0461 0.4487 0.32766 2017 5 13 57886 0.0476 0.4498 0.32630 2017 5 14 57887 0.0492 0.4509 0.32496 2017 5 15 57888 0.0507 0.4519 0.32368 2017 5 16 57889 0.0523 0.4529 0.32249 2017 5 17 57890 0.0539 0.4539 0.32129 2017 5 18 57891 0.0556 0.4549 0.32006 2017 5 19 57892 0.0572 0.4558 0.31868 2017 5 20 57893 0.0589 0.4567 0.31716 2017 5 21 57894 0.0606 0.4576 0.31546 2017 5 22 57895 0.0622 0.4584 0.31371 2017 5 23 57896 0.0639 0.4593 0.31191 2017 5 24 57897 0.0657 0.4601 0.31017 2017 5 25 57898 0.0674 0.4609 0.30863 2017 5 26 57899 0.0691 0.4616 0.30733 2017 5 27 57900 0.0709 0.4623 0.30622 2017 5 28 57901 0.0726 0.4630 0.30522 2017 5 29 57902 0.0744 0.4637 0.30435 2017 5 30 57903 0.0762 0.4644 0.30350 2017 5 31 57904 0.0780 0.4650 0.30271 2017 6 1 57905 0.0798 0.4656 0.30183 2017 6 2 57906 0.0816 0.4662 0.30093 2017 6 3 57907 0.0834 0.4667 0.30000 2017 6 4 57908 0.0852 0.4672 0.29903 2017 6 5 57909 0.0871 0.4677 0.29806 2017 6 6 57910 0.0889 0.4681 0.29714 2017 6 7 57911 0.0908 0.4686 0.29632 2017 6 8 57912 0.0926 0.4690 0.29558 2017 6 9 57913 0.0945 0.4693 0.29502 2017 6 10 57914 0.0963 0.4697 0.29455 2017 6 11 57915 0.0982 0.4700 0.29416 2017 6 12 57916 0.1000 0.4703 0.29381 2017 6 13 57917 0.1019 0.4705 0.29346 2017 6 14 57918 0.1038 0.4708 0.29302 2017 6 15 57919 0.1057 0.4710 0.29249 2017 6 16 57920 0.1075 0.4711 0.29183 2017 6 17 57921 0.1094 0.4713 0.29111 2017 6 18 57922 0.1113 0.4714 0.29028 2017 6 19 57923 0.1132 0.4715 0.28935 2017 6 20 57924 0.1150 0.4715 0.28834 2017 6 21 57925 0.1169 0.4716 0.28732 2017 6 22 57926 0.1188 0.4716 0.28642 2017 6 23 57927 0.1206 0.4715 0.28562 2017 6 24 57928 0.1225 0.4715 0.28494 2017 6 25 57929 0.1244 0.4714 0.28425 2017 6 26 57930 0.1262 0.4713 0.28358 2017 6 27 57931 0.1281 0.4712 0.28288 2017 6 28 57932 0.1299 0.4710 0.28214 2017 6 29 57933 0.1317 0.4708 0.28136 2017 6 30 57934 0.1336 0.4706 0.28058 2017 7 1 57935 0.1354 0.4703 0.27985 2017 7 2 57936 0.1372 0.4700 0.27919 2017 7 3 57937 0.1390 0.4697 0.27857 2017 7 4 57938 0.1408 0.4694 0.27797 2017 7 5 57939 0.1426 0.4690 0.27744 2017 7 6 57940 0.1444 0.4686 0.27709 2017 7 7 57941 0.1462 0.4682 0.27693 2017 7 8 57942 0.1479 0.4678 0.27689 2017 7 9 57943 0.1497 0.4673 0.27678 2017 7 10 57944 0.1514 0.4668 0.27658 2017 7 11 57945 0.1531 0.4663 0.27637 2017 7 12 57946 0.1549 0.4657 0.27608 2017 7 13 57947 0.1566 0.4652 0.27569 2017 7 14 57948 0.1583 0.4646 0.27515 2017 7 15 57949 0.1599 0.4639 0.27455 2017 7 16 57950 0.1616 0.4633 0.27382 2017 7 17 57951 0.1632 0.4626 0.27306 2017 7 18 57952 0.1649 0.4619 0.27233 2017 7 19 57953 0.1665 0.4612 0.27175 2017 7 20 57954 0.1681 0.4604 0.27128 2017 7 21 57955 0.1697 0.4596 0.27092 2017 7 22 57956 0.1712 0.4588 0.27057 2017 7 23 57957 0.1728 0.4580 0.27015 2017 7 24 57958 0.1743 0.4572 0.26965 2017 7 25 57959 0.1758 0.4563 0.26902 2017 7 26 57960 0.1773 0.4554 0.26827 2017 7 27 57961 0.1788 0.4545 0.26744 2017 7 28 57962 0.1802 0.4535 0.26665 2017 7 29 57963 0.1817 0.4526 0.26591 2017 7 30 57964 0.1831 0.4516 0.26522 2017 7 31 57965 0.1845 0.4506 0.26457 2017 8 1 57966 0.1858 0.4496 0.26402 2017 8 2 57967 0.1872 0.4485 0.26356 2017 8 3 57968 0.1885 0.4475 0.26325 2017 8 4 57969 0.1898 0.4464 0.26301 2017 8 5 57970 0.1911 0.4453 0.26282 2017 8 6 57971 0.1924 0.4442 0.26260 2017 8 7 57972 0.1936 0.4430 0.26226 2017 8 8 57973 0.1948 0.4418 0.26180 2017 8 9 57974 0.1960 0.4407 0.26118 2017 8 10 57975 0.1972 0.4395 0.26037 2017 8 11 57976 0.1983 0.4383 0.25948 2017 8 12 57977 0.1994 0.4370 0.25854 2017 8 13 57978 0.2005 0.4358 0.25746 2017 8 14 57979 0.2016 0.4345 0.25633 2017 8 15 57980 0.2026 0.4332 0.25523 2017 8 16 57981 0.2036 0.4319 0.25417 2017 8 17 57982 0.2046 0.4306 0.25319 2017 8 18 57983 0.2056 0.4293 0.25224 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) 57596 -102.44 0.30 -12.83 0.01 57597 -102.75 0.30 -12.87 0.01 57598 -103.32 0.30 -13.04 0.01 57599 -103.89 0.30 -13.32 0.15 57600 -104.19 0.30 -13.56 0.17 57601 -104.11 0.30 -13.62 0.17 57602 -103.78 0.30 -13.48 0.17 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57596 0.154 0.119 -0.091 0.010 57597 0.145 0.119 -0.114 0.010 57598 0.139 0.119 -0.116 0.010 57599 0.135 0.119 -0.112 0.150 57600 0.130 0.119 -0.117 0.170 57601 0.126 0.119 -0.132 0.170 57602 0.117 0.119 -0.130 0.170 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).