********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 13 October 2016 Vol. XXIX No. 041 ______________________________________________________________________ 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 = -0.3 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. * * * * As of Bulletin A Vol. XXIX, No. 041, on 13 Oct 2016, we have * * incorporated the new GSFC VLBI solutions gsf2016a.eops and * * gsf2016a.eopi. The effect appears to be less than 0.1 mas in * * polar motion and 10 us in UT1-UTC. In addition, the contribution * * of the US Navy Fleet Numerical Meteorology and Oceanography Center * * (FNMOC) to the Atmospheric Angular Momentum (AAM) inputs has been * * upgraded to version 1.4 of the Navy Global Environmental Model * * (NAVGEM). It is anticipated that this upgrade may somewhat * * improve the short term UT1-UTC predictions. * * * * 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 10 7 57668 0.22345 .00009 0.32133 .00009 -0.285950 0.000009 16 10 8 57669 0.22193 .00009 0.31956 .00009 -0.286917 0.000009 16 10 9 57670 0.22107 .00009 0.31773 .00009 -0.287886 0.000010 16 10 10 57671 0.22083 .00009 0.31590 .00009 -0.288959 0.000012 16 10 11 57672 0.22073 .00009 0.31410 .00009 -0.290175 0.000011 16 10 12 57673 0.22048 .00009 0.31252 .00009 -0.291591 0.000011 16 10 13 57674 0.22009 .00009 0.31123 .00009 -0.293222 0.000011 _______________________________________________________________________ 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 = 0.1078 + 0.0889 cos A - 0.0538 sin A + 0.0233 cos C - 0.0134 sin C y = 0.3711 - 0.0496 cos A - 0.0874 sin A - 0.0134 cos C - 0.0233 sin C UT1-UTC = -0.3182 - 0.00138 (MJD - 57682) - (UT2-UT1) where A = 2*pi*(MJD-57674)/365.25 and C = 2*pi*(MJD-57674)/435. TAI-UTC(MJD 57675) = 36.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57674)**0.80 S t = 0.00025 (MJD-57674)**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 10 14 57675 0.2193 0.3100 -0.29506 2016 10 15 57676 0.2184 0.3087 -0.29704 2016 10 16 57677 0.2173 0.3073 -0.29908 2016 10 17 57678 0.2163 0.3058 -0.30105 2016 10 18 57679 0.2152 0.3043 -0.30288 2016 10 19 57680 0.2140 0.3028 -0.30451 2016 10 20 57681 0.2129 0.3013 -0.30596 2016 10 21 57682 0.2118 0.2999 -0.30726 2016 10 22 57683 0.2106 0.2984 -0.30852 2016 10 23 57684 0.2093 0.2971 -0.30982 2016 10 24 57685 0.2080 0.2957 -0.31120 2016 10 25 57686 0.2066 0.2943 -0.31266 2016 10 26 57687 0.2051 0.2930 -0.31418 2016 10 27 57688 0.2037 0.2917 -0.31573 2016 10 28 57689 0.2023 0.2903 -0.31727 2016 10 29 57690 0.2009 0.2890 -0.31879 2016 10 30 57691 0.1996 0.2876 -0.32025 2016 10 31 57692 0.1982 0.2864 -0.32165 2016 11 1 57693 0.1968 0.2851 -0.32298 2016 11 2 57694 0.1954 0.2839 -0.32423 2016 11 3 57695 0.1939 0.2828 -0.32542 2016 11 4 57696 0.1924 0.2816 -0.32657 2016 11 5 57697 0.1908 0.2805 -0.32771 2016 11 6 57698 0.1893 0.2793 -0.32888 2016 11 7 57699 0.1877 0.2782 -0.33012 2016 11 8 57700 0.1861 0.2772 -0.33147 2016 11 9 57701 0.1845 0.2761 -0.33298 2016 11 10 57702 0.1828 0.2751 -0.33466 2016 11 11 57703 0.1812 0.2741 -0.33652 2016 11 12 57704 0.1795 0.2731 -0.33849 2016 11 13 57705 0.1778 0.2722 -0.34049 2016 11 14 57706 0.1761 0.2712 -0.34244 2016 11 15 57707 0.1744 0.2703 -0.34424 2016 11 16 57708 0.1727 0.2695 -0.34587 2016 11 17 57709 0.1709 0.2686 -0.34737 2016 11 18 57710 0.1692 0.2678 -0.34879 2016 11 19 57711 0.1674 0.2670 -0.35018 2016 11 20 57712 0.1656 0.2662 -0.35160 2016 11 21 57713 0.1638 0.2655 -0.35305 2016 11 22 57714 0.1620 0.2648 -0.35454 2016 11 23 57715 0.1602 0.2641 -0.35606 2016 11 24 57716 0.1584 0.2635 -0.35759 2016 11 25 57717 0.1565 0.2628 -0.35909 2016 11 26 57718 0.1546 0.2622 -0.36055 2016 11 27 57719 0.1528 0.2617 -0.36195 2016 11 28 57720 0.1509 0.2611 -0.36327 2016 11 29 57721 0.1490 0.2606 -0.36451 2016 11 30 57722 0.1471 0.2602 -0.36566 2016 12 1 57723 0.1452 0.2597 -0.36676 2016 12 2 57724 0.1433 0.2593 -0.36783 2016 12 3 57725 0.1414 0.2589 -0.36891 2016 12 4 57726 0.1395 0.2585 -0.37003 2016 12 5 57727 0.1376 0.2582 -0.37125 2016 12 6 57728 0.1357 0.2579 -0.37258 2016 12 7 57729 0.1337 0.2576 -0.37407 2016 12 8 57730 0.1318 0.2574 -0.37570 2016 12 9 57731 0.1299 0.2572 -0.37744 2016 12 10 57732 0.1279 0.2570 -0.37923 2016 12 11 57733 0.1260 0.2569 -0.38101 2016 12 12 57734 0.1240 0.2568 -0.38270 2016 12 13 57735 0.1221 0.2567 -0.38426 2016 12 14 57736 0.1201 0.2566 -0.38569 2016 12 15 57737 0.1182 0.2566 -0.38702 2016 12 16 57738 0.1162 0.2566 -0.38832 2016 12 17 57739 0.1143 0.2566 -0.38964 2016 12 18 57740 0.1124 0.2567 -0.39101 2016 12 19 57741 0.1104 0.2568 -0.39241 2016 12 20 57742 0.1085 0.2569 -0.39385 2016 12 21 57743 0.1066 0.2571 -0.39529 2016 12 22 57744 0.1046 0.2572 -0.39670 2016 12 23 57745 0.1027 0.2575 -0.39806 2016 12 24 57746 0.1008 0.2577 -0.39934 2016 12 25 57747 0.0989 0.2580 -0.40054 2016 12 26 57748 0.0970 0.2583 -0.40165 2016 12 27 57749 0.0951 0.2586 -0.40268 2016 12 28 57750 0.0932 0.2590 -0.40364 2016 12 29 57751 0.0913 0.2594 -0.40458 2016 12 30 57752 0.0894 0.2598 -0.40553 2016 12 31 57753 0.0876 0.2603 -0.40653 2017 1 1 57754 0.0857 0.2607 0.59237 2017 1 2 57755 0.0839 0.2612 0.59113 2017 1 3 57756 0.0820 0.2618 0.58974 2017 1 4 57757 0.0802 0.2623 0.58820 2017 1 5 57758 0.0784 0.2629 0.58654 2017 1 6 57759 0.0766 0.2636 0.58480 2017 1 7 57760 0.0748 0.2642 0.58306 2017 1 8 57761 0.0731 0.2649 0.58136 2017 1 9 57762 0.0713 0.2656 0.57975 2017 1 10 57763 0.0696 0.2663 0.57826 2017 1 11 57764 0.0678 0.2671 0.57687 2017 1 12 57765 0.0661 0.2679 0.57552 2017 1 13 57766 0.0644 0.2687 0.57416 2017 1 14 57767 0.0627 0.2696 0.57275 2017 1 15 57768 0.0611 0.2704 0.57127 2017 1 16 57769 0.0594 0.2713 0.56973 2017 1 17 57770 0.0578 0.2722 0.56817 2017 1 18 57771 0.0562 0.2732 0.56662 2017 1 19 57772 0.0546 0.2742 0.56511 2017 1 20 57773 0.0530 0.2752 0.56366 2017 1 21 57774 0.0514 0.2762 0.56231 2017 1 22 57775 0.0499 0.2772 0.56104 2017 1 23 57776 0.0484 0.2783 0.55986 2017 1 24 57777 0.0469 0.2794 0.55874 2017 1 25 57778 0.0454 0.2805 0.55767 2017 1 26 57779 0.0440 0.2816 0.55660 2017 1 27 57780 0.0425 0.2828 0.55549 2017 1 28 57781 0.0411 0.2840 0.55428 2017 1 29 57782 0.0397 0.2852 0.55295 2017 1 30 57783 0.0384 0.2864 0.55152 2017 1 31 57784 0.0370 0.2877 0.54994 2017 2 1 57785 0.0357 0.2889 0.54824 2017 2 2 57786 0.0344 0.2902 0.54646 2017 2 3 57787 0.0332 0.2915 0.54468 2017 2 4 57788 0.0319 0.2929 0.54295 2017 2 5 57789 0.0307 0.2942 0.54130 2017 2 6 57790 0.0295 0.2956 0.53977 2017 2 7 57791 0.0283 0.2970 0.53832 2017 2 8 57792 0.0272 0.2984 0.53693 2017 2 9 57793 0.0261 0.2998 0.53553 2017 2 10 57794 0.0250 0.3012 0.53406 2017 2 11 57795 0.0239 0.3027 0.53251 2017 2 12 57796 0.0229 0.3041 0.53087 2017 2 13 57797 0.0219 0.3056 0.52916 2017 2 14 57798 0.0209 0.3071 0.52743 2017 2 15 57799 0.0200 0.3087 0.52571 2017 2 16 57800 0.0191 0.3102 0.52405 2017 2 17 57801 0.0182 0.3117 0.52245 2017 2 18 57802 0.0173 0.3133 0.52094 2017 2 19 57803 0.0165 0.3149 0.51952 2017 2 20 57804 0.0157 0.3165 0.51817 2017 2 21 57805 0.0149 0.3181 0.51686 2017 2 22 57806 0.0142 0.3197 0.51556 2017 2 23 57807 0.0135 0.3213 0.51423 2017 2 24 57808 0.0128 0.3229 0.51281 2017 2 25 57809 0.0121 0.3246 0.51127 2017 2 26 57810 0.0115 0.3263 0.50955 2017 2 27 57811 0.0109 0.3279 0.50767 2017 2 28 57812 0.0104 0.3296 0.50563 2017 3 1 57813 0.0099 0.3313 0.50349 2017 3 2 57814 0.0094 0.3330 0.50133 2017 3 3 57815 0.0089 0.3347 0.49922 2017 3 4 57816 0.0085 0.3364 0.49721 2017 3 5 57817 0.0081 0.3381 0.49533 2017 3 6 57818 0.0077 0.3398 0.49356 2017 3 7 57819 0.0074 0.3415 0.49186 2017 3 8 57820 0.0071 0.3433 0.49017 2017 3 9 57821 0.0068 0.3450 0.48845 2017 3 10 57822 0.0066 0.3468 0.48665 2017 3 11 57823 0.0063 0.3485 0.48475 2017 3 12 57824 0.0062 0.3502 0.48278 2017 3 13 57825 0.0060 0.3520 0.48075 2017 3 14 57826 0.0059 0.3537 0.47873 2017 3 15 57827 0.0058 0.3555 0.47674 2017 3 16 57828 0.0058 0.3573 0.47483 2017 3 17 57829 0.0058 0.3590 0.47300 2017 3 18 57830 0.0058 0.3608 0.47127 2017 3 19 57831 0.0058 0.3625 0.46962 2017 3 20 57832 0.0059 0.3643 0.46805 2017 3 21 57833 0.0060 0.3660 0.46651 2017 3 22 57834 0.0062 0.3678 0.46496 2017 3 23 57835 0.0064 0.3695 0.46335 2017 3 24 57836 0.0066 0.3713 0.46163 2017 3 25 57837 0.0068 0.3730 0.45977 2017 3 26 57838 0.0071 0.3748 0.45773 2017 3 27 57839 0.0074 0.3765 0.45551 2017 3 28 57840 0.0077 0.3783 0.45316 2017 3 29 57841 0.0081 0.3800 0.45075 2017 3 30 57842 0.0085 0.3817 0.44837 2017 3 31 57843 0.0089 0.3834 0.44610 2017 4 1 57844 0.0094 0.3851 0.44398 2017 4 2 57845 0.0099 0.3868 0.44200 2017 4 3 57846 0.0104 0.3885 0.44014 2017 4 4 57847 0.0110 0.3902 0.43833 2017 4 5 57848 0.0116 0.3919 0.43653 2017 4 6 57849 0.0122 0.3936 0.43467 2017 4 7 57850 0.0128 0.3952 0.43275 2017 4 8 57851 0.0135 0.3969 0.43076 2017 4 9 57852 0.0142 0.3985 0.42871 2017 4 10 57853 0.0150 0.4001 0.42666 2017 4 11 57854 0.0157 0.4018 0.42463 2017 4 12 57855 0.0165 0.4034 0.42267 2017 4 13 57856 0.0173 0.4050 0.42080 2017 4 14 57857 0.0182 0.4065 0.41903 2017 4 15 57858 0.0191 0.4081 0.41737 2017 4 16 57859 0.0200 0.4097 0.41579 2017 4 17 57860 0.0209 0.4112 0.41426 2017 4 18 57861 0.0219 0.4127 0.41275 2017 4 19 57862 0.0229 0.4142 0.41119 2017 4 20 57863 0.0239 0.4157 0.40956 2017 4 21 57864 0.0249 0.4172 0.40779 2017 4 22 57865 0.0260 0.4187 0.40586 2017 4 23 57866 0.0271 0.4201 0.40375 2017 4 24 57867 0.0282 0.4216 0.40150 2017 4 25 57868 0.0293 0.4230 0.39917 2017 4 26 57869 0.0305 0.4244 0.39686 2017 4 27 57870 0.0317 0.4257 0.39466 2017 4 28 57871 0.0329 0.4271 0.39266 2017 4 29 57872 0.0342 0.4284 0.39088 2017 4 30 57873 0.0354 0.4298 0.38929 2017 5 1 57874 0.0367 0.4311 0.38781 2017 5 2 57875 0.0380 0.4323 0.38639 2017 5 3 57876 0.0394 0.4336 0.38495 2017 5 4 57877 0.0407 0.4349 0.38346 2017 5 5 57878 0.0421 0.4361 0.38192 2017 5 6 57879 0.0435 0.4373 0.38033 2017 5 7 57880 0.0449 0.4384 0.37873 2017 5 8 57881 0.0464 0.4396 0.37715 2017 5 9 57882 0.0478 0.4407 0.37563 2017 5 10 57883 0.0493 0.4418 0.37419 2017 5 11 57884 0.0508 0.4429 0.37285 2017 5 12 57885 0.0523 0.4440 0.37158 2017 5 13 57886 0.0538 0.4450 0.37039 2017 5 14 57887 0.0554 0.4461 0.36923 2017 5 15 57888 0.0570 0.4471 0.36808 2017 5 16 57889 0.0585 0.4480 0.36691 2017 5 17 57890 0.0601 0.4490 0.36569 2017 5 18 57891 0.0618 0.4499 0.36437 2017 5 19 57892 0.0634 0.4508 0.36295 2017 5 20 57893 0.0650 0.4517 0.36144 2017 5 21 57894 0.0667 0.4525 0.35978 2017 5 22 57895 0.0684 0.4533 0.35796 2017 5 23 57896 0.0701 0.4541 0.35607 2017 5 24 57897 0.0718 0.4549 0.35414 2017 5 25 57898 0.0735 0.4556 0.35239 2017 5 26 57899 0.0752 0.4563 0.35082 2017 5 27 57900 0.0769 0.4570 0.34941 2017 5 28 57901 0.0787 0.4577 0.34813 2017 5 29 57902 0.0804 0.4583 0.34690 2017 5 30 57903 0.0822 0.4589 0.34564 2017 5 31 57904 0.0840 0.4595 0.34435 2017 6 1 57905 0.0858 0.4601 0.34308 2017 6 2 57906 0.0876 0.4606 0.34181 2017 6 3 57907 0.0894 0.4611 0.34047 2017 6 4 57908 0.0912 0.4616 0.33932 2017 6 5 57909 0.0930 0.4620 0.33815 2017 6 6 57910 0.0948 0.4624 0.33699 2017 6 7 57911 0.0966 0.4628 0.33587 2017 6 8 57912 0.0985 0.4632 0.33491 2017 6 9 57913 0.1003 0.4635 0.33407 2017 6 10 57914 0.1021 0.4638 0.33330 2017 6 11 57915 0.1040 0.4641 0.33262 2017 6 12 57916 0.1058 0.4643 0.33207 2017 6 13 57917 0.1077 0.4646 0.33156 2017 6 14 57918 0.1095 0.4647 0.33088 2017 6 15 57919 0.1114 0.4649 0.33011 2017 6 16 57920 0.1132 0.4650 0.32926 2017 6 17 57921 0.1151 0.4651 0.32825 2017 6 18 57922 0.1169 0.4652 0.32718 2017 6 19 57923 0.1188 0.4653 0.32604 2017 6 20 57924 0.1206 0.4653 0.32491 2017 6 21 57925 0.1225 0.4653 0.32381 2017 6 22 57926 0.1243 0.4652 0.32300 2017 6 23 57927 0.1262 0.4652 0.32230 2017 6 24 57928 0.1280 0.4651 0.32174 2017 6 25 57929 0.1299 0.4650 0.32123 2017 6 26 57930 0.1317 0.4648 0.32072 2017 6 27 57931 0.1335 0.4646 0.32015 2017 6 28 57932 0.1353 0.4644 0.31946 2017 6 29 57933 0.1372 0.4642 0.31878 2017 6 30 57934 0.1390 0.4639 0.31795 2017 7 1 57935 0.1408 0.4636 0.31721 2017 7 2 57936 0.1426 0.4633 0.31641 2017 7 3 57937 0.1443 0.4630 0.31568 2017 7 4 57938 0.1461 0.4626 0.31508 2017 7 5 57939 0.1479 0.4622 0.31467 2017 7 6 57940 0.1496 0.4618 0.31424 2017 7 7 57941 0.1514 0.4613 0.31410 2017 7 8 57942 0.1531 0.4608 0.31403 2017 7 9 57943 0.1548 0.4603 0.31399 2017 7 10 57944 0.1566 0.4598 0.31396 2017 7 11 57945 0.1583 0.4592 0.31381 2017 7 12 57946 0.1600 0.4587 0.31361 2017 7 13 57947 0.1616 0.4581 0.31328 2017 7 14 57948 0.1633 0.4574 0.31268 2017 7 15 57949 0.1649 0.4568 0.31194 2017 7 16 57950 0.1666 0.4561 0.31105 2017 7 17 57951 0.1682 0.4554 0.31006 2017 7 18 57952 0.1698 0.4546 0.30901 2017 7 19 57953 0.1714 0.4539 0.30799 2017 7 20 57954 0.1730 0.4531 0.30703 2017 7 21 57955 0.1745 0.4523 0.30622 2017 7 22 57956 0.1761 0.4514 0.30543 2017 7 23 57957 0.1776 0.4506 0.30466 2017 7 24 57958 0.1791 0.4497 0.30379 2017 7 25 57959 0.1806 0.4488 0.30283 2017 7 26 57960 0.1820 0.4479 0.30188 2017 7 27 57961 0.1835 0.4469 0.30078 2017 7 28 57962 0.1849 0.4460 0.29969 2017 7 29 57963 0.1863 0.4450 0.29852 2017 7 30 57964 0.1877 0.4440 0.29746 2017 7 31 57965 0.1891 0.4429 0.29642 2017 8 1 57966 0.1904 0.4419 0.29543 2017 8 2 57967 0.1917 0.4408 0.29458 2017 8 3 57968 0.1930 0.4397 0.29375 2017 8 4 57969 0.1943 0.4386 0.29297 2017 8 5 57970 0.1956 0.4375 0.29213 2017 8 6 57971 0.1968 0.4363 0.29127 2017 8 7 57972 0.1980 0.4351 0.29035 2017 8 8 57973 0.1992 0.4339 0.28933 2017 8 9 57974 0.2004 0.4327 0.28822 2017 8 10 57975 0.2015 0.4315 0.28702 2017 8 11 57976 0.2026 0.4303 0.28568 2017 8 12 57977 0.2037 0.4290 0.28428 2017 8 13 57978 0.2048 0.4277 0.28292 2017 8 14 57979 0.2058 0.4265 0.28161 2017 8 15 57980 0.2068 0.4252 0.28041 2017 8 16 57981 0.2078 0.4238 0.27938 2017 8 17 57982 0.2088 0.4225 0.27854 2017 8 18 57983 0.2097 0.4211 0.27768 2017 8 19 57984 0.2106 0.4198 0.27695 2017 8 20 57985 0.2115 0.4184 0.27611 2017 8 21 57986 0.2123 0.4170 0.27509 2017 8 22 57987 0.2132 0.4156 0.27399 2017 8 23 57988 0.2140 0.4142 0.27278 2017 8 24 57989 0.2147 0.4128 0.27155 2017 8 25 57990 0.2155 0.4113 0.27042 2017 8 26 57991 0.2162 0.4099 0.26932 2017 8 27 57992 0.2169 0.4084 0.26830 2017 8 28 57993 0.2175 0.4070 0.26736 2017 8 29 57994 0.2182 0.4055 0.26652 2017 8 30 57995 0.2188 0.4040 0.26575 2017 8 31 57996 0.2193 0.4025 0.26497 2017 9 1 57997 0.2199 0.4010 0.26420 2017 9 2 57998 0.2204 0.3995 0.26340 2017 9 3 57999 0.2209 0.3980 0.26248 2017 9 4 58000 0.2213 0.3964 0.26145 2017 9 5 58001 0.2218 0.3949 0.26035 2017 9 6 58002 0.2222 0.3934 0.25910 2017 9 7 58003 0.2225 0.3918 0.25776 2017 9 8 58004 0.2229 0.3903 0.25624 2017 9 9 58005 0.2232 0.3887 0.25465 2017 9 10 58006 0.2235 0.3872 0.25304 2017 9 11 58007 0.2237 0.3856 0.25154 2017 9 12 58008 0.2239 0.3841 0.25015 2017 9 13 58009 0.2241 0.3825 0.24892 2017 9 14 58010 0.2243 0.3809 0.24786 2017 9 15 58011 0.2244 0.3794 0.24690 2017 9 16 58012 0.2245 0.3778 0.24594 2017 9 17 58013 0.2246 0.3762 0.24488 2017 9 18 58014 0.2246 0.3746 0.24377 2017 9 19 58015 0.2246 0.3731 0.24255 2017 9 20 58016 0.2246 0.3715 0.24134 2017 9 21 58017 0.2245 0.3699 0.24005 2017 9 22 58018 0.2244 0.3684 0.23879 2017 9 23 58019 0.2243 0.3668 0.23757 2017 9 24 58020 0.2242 0.3652 0.23636 2017 9 25 58021 0.2240 0.3637 0.23519 2017 9 26 58022 0.2238 0.3621 0.23407 2017 9 27 58023 0.2236 0.3606 0.23302 2017 9 28 58024 0.2233 0.3590 0.23198 2017 9 29 58025 0.2230 0.3575 0.23100 2017 9 30 58026 0.2227 0.3559 0.22997 2017 10 1 58027 0.2224 0.3544 0.22887 2017 10 2 58028 0.2220 0.3529 0.22766 2017 10 3 58029 0.2216 0.3513 0.22629 2017 10 4 58030 0.2212 0.3498 0.22474 2017 10 5 58031 0.2207 0.3483 0.22303 2017 10 6 58032 0.2202 0.3468 0.22121 2017 10 7 58033 0.2197 0.3453 0.21943 2017 10 8 58034 0.2192 0.3439 0.21772 2017 10 9 58035 0.2186 0.3424 0.21610 2017 10 10 58036 0.2180 0.3409 0.21454 2017 10 11 58037 0.2174 0.3395 0.21305 2017 10 12 58038 0.2167 0.3380 0.21162 2017 10 13 58039 0.2160 0.3366 0.21016 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) 57652 -106.97 0.13 -12.52 0.04 57653 -107.03 0.13 -12.53 0.04 57654 -106.88 0.13 -12.57 0.04 57655 -106.59 0.30 -12.68 0.15 57656 -106.29 0.30 -12.80 0.03 57657 -105.96 0.30 -12.87 0.03 57658 -105.58 0.30 -12.87 0.03 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57652 -0.062 0.052 -0.022 0.040 57653 -0.054 0.052 -0.020 0.040 57654 -0.028 0.052 -0.014 0.040 57655 0.028 0.119 -0.017 0.150 57656 0.092 0.119 -0.033 0.030 57657 0.154 0.119 -0.063 0.030 57658 0.199 0.119 -0.091 0.030 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).