********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 20 October 2016 Vol. XXIX No. 042 ______________________________________________________________________ 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 = -0.4 seconds beginning 17 Nov 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 10 14 57675 0.21901 .00009 0.31032 .00009 -0.295042 0.000008 16 10 15 57676 0.21744 .00009 0.30924 .00009 -0.297050 0.000009 16 10 16 57677 0.21555 .00009 0.30784 .00009 -0.299144 0.000009 16 10 17 57678 0.21360 .00009 0.30607 .00009 -0.301203 0.000010 16 10 18 57679 0.21178 .00009 0.30406 .00009 -0.303119 0.000010 16 10 19 57680 0.21000 .00009 0.30207 .00009 -0.304870 0.000010 16 10 20 57681 0.20812 .00009 0.30010 .00009 -0.306426 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 = 0.1042 + 0.0809 cos A - 0.0636 sin A + 0.0229 cos C - 0.0156 sin C y = 0.3713 - 0.0593 cos A - 0.0798 sin A - 0.0156 cos C - 0.0229 sin C UT1-UTC = -0.3259 - 0.00138 (MJD - 57689) - (UT2-UT1) where A = 2*pi*(MJD-57681)/365.25 and C = 2*pi*(MJD-57681)/435. TAI-UTC(MJD 57682) = 36.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57681)**0.80 S t = 0.00025 (MJD-57681)**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 21 57682 0.2065 0.2982 -0.30788 2016 10 22 57683 0.2048 0.2964 -0.30928 2016 10 23 57684 0.2033 0.2947 -0.31068 2016 10 24 57685 0.2018 0.2932 -0.31210 2016 10 25 57686 0.2004 0.2918 -0.31353 2016 10 26 57687 0.1989 0.2904 -0.31496 2016 10 27 57688 0.1975 0.2891 -0.31636 2016 10 28 57689 0.1960 0.2877 -0.31774 2016 10 29 57690 0.1946 0.2863 -0.31912 2016 10 30 57691 0.1932 0.2850 -0.32051 2016 10 31 57692 0.1918 0.2837 -0.32189 2016 11 1 57693 0.1904 0.2825 -0.32323 2016 11 2 57694 0.1889 0.2813 -0.32449 2016 11 3 57695 0.1874 0.2802 -0.32570 2016 11 4 57696 0.1858 0.2791 -0.32688 2016 11 5 57697 0.1842 0.2780 -0.32805 2016 11 6 57698 0.1826 0.2769 -0.32925 2016 11 7 57699 0.1809 0.2759 -0.33052 2016 11 8 57700 0.1792 0.2748 -0.33189 2016 11 9 57701 0.1776 0.2738 -0.33342 2016 11 10 57702 0.1759 0.2728 -0.33513 2016 11 11 57703 0.1742 0.2718 -0.33699 2016 11 12 57704 0.1725 0.2709 -0.33897 2016 11 13 57705 0.1708 0.2700 -0.34098 2016 11 14 57706 0.1691 0.2692 -0.34292 2016 11 15 57707 0.1673 0.2684 -0.34473 2016 11 16 57708 0.1656 0.2676 -0.34637 2016 11 17 57709 0.1638 0.2668 -0.34786 2016 11 18 57710 0.1620 0.2661 -0.34924 2016 11 19 57711 0.1602 0.2654 -0.35059 2016 11 20 57712 0.1584 0.2647 -0.35195 2016 11 21 57713 0.1566 0.2640 -0.35335 2016 11 22 57714 0.1548 0.2634 -0.35479 2016 11 23 57715 0.1530 0.2628 -0.35627 2016 11 24 57716 0.1511 0.2623 -0.35776 2016 11 25 57717 0.1493 0.2618 -0.35922 2016 11 26 57718 0.1474 0.2613 -0.36063 2016 11 27 57719 0.1455 0.2608 -0.36197 2016 11 28 57720 0.1437 0.2604 -0.36322 2016 11 29 57721 0.1418 0.2599 -0.36439 2016 11 30 57722 0.1399 0.2596 -0.36548 2016 12 1 57723 0.1380 0.2592 -0.36651 2016 12 2 57724 0.1361 0.2589 -0.36751 2016 12 3 57725 0.1342 0.2586 -0.36853 2016 12 4 57726 0.1323 0.2584 -0.36960 2016 12 5 57727 0.1303 0.2581 -0.37077 2016 12 6 57728 0.1284 0.2579 -0.37208 2016 12 7 57729 0.1265 0.2578 -0.37355 2016 12 8 57730 0.1246 0.2576 -0.37518 2016 12 9 57731 0.1226 0.2575 -0.37692 2016 12 10 57732 0.1207 0.2574 -0.37874 2016 12 11 57733 0.1188 0.2574 -0.38054 2016 12 12 57734 0.1168 0.2574 -0.38225 2016 12 13 57735 0.1149 0.2574 -0.38383 2016 12 14 57736 0.1130 0.2574 -0.38526 2016 12 15 57737 0.1111 0.2575 -0.38659 2016 12 16 57738 0.1091 0.2576 -0.38786 2016 12 17 57739 0.1072 0.2577 -0.38914 2016 12 18 57740 0.1053 0.2579 -0.39045 2016 12 19 57741 0.1034 0.2581 -0.39181 2016 12 20 57742 0.1015 0.2583 -0.39319 2016 12 21 57743 0.0996 0.2586 -0.39457 2016 12 22 57744 0.0977 0.2589 -0.39594 2016 12 23 57745 0.0958 0.2592 -0.39725 2016 12 24 57746 0.0939 0.2595 -0.39850 2016 12 25 57747 0.0920 0.2599 -0.39967 2016 12 26 57748 0.0901 0.2603 -0.40076 2016 12 27 57749 0.0883 0.2607 -0.40177 2016 12 28 57750 0.0864 0.2612 -0.40273 2016 12 29 57751 0.0846 0.2617 -0.40365 2016 12 30 57752 0.0828 0.2622 -0.40457 2016 12 31 57753 0.0809 0.2628 -0.40553 2017 1 1 57754 0.0791 0.2633 0.59342 2017 1 2 57755 0.0773 0.2639 0.59224 2017 1 3 57756 0.0755 0.2646 0.59093 2017 1 4 57757 0.0738 0.2652 0.58947 2017 1 5 57758 0.0720 0.2659 0.58791 2017 1 6 57759 0.0702 0.2666 0.58628 2017 1 7 57760 0.0685 0.2674 0.58464 2017 1 8 57761 0.0668 0.2681 0.58306 2017 1 9 57762 0.0651 0.2689 0.58156 2017 1 10 57763 0.0634 0.2698 0.58018 2017 1 11 57764 0.0617 0.2706 0.57887 2017 1 12 57765 0.0601 0.2715 0.57761 2017 1 13 57766 0.0584 0.2724 0.57632 2017 1 14 57767 0.0568 0.2733 0.57497 2017 1 15 57768 0.0552 0.2743 0.57353 2017 1 16 57769 0.0536 0.2753 0.57203 2017 1 17 57770 0.0521 0.2763 0.57049 2017 1 18 57771 0.0505 0.2773 0.56895 2017 1 19 57772 0.0490 0.2784 0.56744 2017 1 20 57773 0.0475 0.2794 0.56599 2017 1 21 57774 0.0460 0.2805 0.56462 2017 1 22 57775 0.0445 0.2817 0.56334 2017 1 23 57776 0.0431 0.2828 0.56214 2017 1 24 57777 0.0417 0.2840 0.56101 2017 1 25 57778 0.0403 0.2852 0.55992 2017 1 26 57779 0.0389 0.2864 0.55882 2017 1 27 57780 0.0375 0.2876 0.55769 2017 1 28 57781 0.0362 0.2889 0.55647 2017 1 29 57782 0.0349 0.2901 0.55512 2017 1 30 57783 0.0336 0.2914 0.55361 2017 1 31 57784 0.0324 0.2928 0.55196 2017 2 1 57785 0.0311 0.2941 0.55019 2017 2 2 57786 0.0299 0.2955 0.54836 2017 2 3 57787 0.0287 0.2968 0.54652 2017 2 4 57788 0.0276 0.2982 0.54473 2017 2 5 57789 0.0265 0.2996 0.54304 2017 2 6 57790 0.0254 0.3011 0.54152 2017 2 7 57791 0.0243 0.3025 0.54010 2017 2 8 57792 0.0232 0.3040 0.53872 2017 2 9 57793 0.0222 0.3055 0.53733 2017 2 10 57794 0.0212 0.3070 0.53588 2017 2 11 57795 0.0203 0.3085 0.53435 2017 2 12 57796 0.0193 0.3100 0.53273 2017 2 13 57797 0.0184 0.3116 0.53105 2017 2 14 57798 0.0176 0.3131 0.52934 2017 2 15 57799 0.0167 0.3147 0.52765 2017 2 16 57800 0.0159 0.3163 0.52601 2017 2 17 57801 0.0151 0.3179 0.52444 2017 2 18 57802 0.0143 0.3195 0.52296 2017 2 19 57803 0.0136 0.3211 0.52156 2017 2 20 57804 0.0129 0.3227 0.52024 2017 2 21 57805 0.0123 0.3244 0.51896 2017 2 22 57806 0.0116 0.3260 0.51769 2017 2 23 57807 0.0110 0.3277 0.51638 2017 2 24 57808 0.0104 0.3294 0.51499 2017 2 25 57809 0.0099 0.3311 0.51346 2017 2 26 57810 0.0094 0.3328 0.51178 2017 2 27 57811 0.0089 0.3345 0.50991 2017 2 28 57812 0.0085 0.3362 0.50789 2017 3 1 57813 0.0080 0.3379 0.50578 2017 3 2 57814 0.0077 0.3396 0.50364 2017 3 3 57815 0.0073 0.3414 0.50155 2017 3 4 57816 0.0070 0.3431 0.49957 2017 3 5 57817 0.0067 0.3448 0.49771 2017 3 6 57818 0.0064 0.3466 0.49597 2017 3 7 57819 0.0062 0.3483 0.49430 2017 3 8 57820 0.0060 0.3501 0.49264 2017 3 9 57821 0.0059 0.3518 0.49094 2017 3 10 57822 0.0057 0.3536 0.48917 2017 3 11 57823 0.0056 0.3554 0.48730 2017 3 12 57824 0.0056 0.3571 0.48535 2017 3 13 57825 0.0055 0.3589 0.48336 2017 3 14 57826 0.0055 0.3607 0.48135 2017 3 15 57827 0.0056 0.3624 0.47939 2017 3 16 57828 0.0056 0.3642 0.47749 2017 3 17 57829 0.0057 0.3659 0.47567 2017 3 18 57830 0.0059 0.3677 0.47395 2017 3 19 57831 0.0060 0.3695 0.47232 2017 3 20 57832 0.0062 0.3712 0.47076 2017 3 21 57833 0.0065 0.3730 0.46923 2017 3 22 57834 0.0067 0.3747 0.46768 2017 3 23 57835 0.0070 0.3765 0.46608 2017 3 24 57836 0.0073 0.3782 0.46437 2017 3 25 57837 0.0077 0.3800 0.46252 2017 3 26 57838 0.0081 0.3817 0.46048 2017 3 27 57839 0.0085 0.3834 0.45827 2017 3 28 57840 0.0090 0.3852 0.45593 2017 3 29 57841 0.0094 0.3869 0.45353 2017 3 30 57842 0.0100 0.3886 0.45116 2017 3 31 57843 0.0105 0.3903 0.44890 2017 4 1 57844 0.0111 0.3920 0.44678 2017 4 2 57845 0.0117 0.3937 0.44482 2017 4 3 57846 0.0123 0.3953 0.44296 2017 4 4 57847 0.0130 0.3970 0.44117 2017 4 5 57848 0.0137 0.3987 0.43937 2017 4 6 57849 0.0144 0.4003 0.43752 2017 4 7 57850 0.0152 0.4019 0.43561 2017 4 8 57851 0.0160 0.4036 0.43362 2017 4 9 57852 0.0168 0.4052 0.43159 2017 4 10 57853 0.0176 0.4068 0.42954 2017 4 11 57854 0.0185 0.4083 0.42753 2017 4 12 57855 0.0194 0.4099 0.42559 2017 4 13 57856 0.0203 0.4115 0.42374 2017 4 14 57857 0.0213 0.4130 0.42200 2017 4 15 57858 0.0223 0.4145 0.42036 2017 4 16 57859 0.0233 0.4161 0.41882 2017 4 17 57860 0.0243 0.4175 0.41734 2017 4 18 57861 0.0254 0.4190 0.41588 2017 4 19 57862 0.0265 0.4205 0.41440 2017 4 20 57863 0.0276 0.4219 0.41285 2017 4 21 57864 0.0288 0.4234 0.41119 2017 4 22 57865 0.0299 0.4248 0.40937 2017 4 23 57866 0.0311 0.4262 0.40738 2017 4 24 57867 0.0324 0.4276 0.40522 2017 4 25 57868 0.0336 0.4289 0.40295 2017 4 26 57869 0.0349 0.4303 0.40064 2017 4 27 57870 0.0362 0.4316 0.39838 2017 4 28 57871 0.0375 0.4329 0.39624 2017 4 29 57872 0.0388 0.4342 0.39425 2017 4 30 57873 0.0402 0.4354 0.39238 2017 5 1 57874 0.0416 0.4367 0.39059 2017 5 2 57875 0.0430 0.4379 0.38883 2017 5 3 57876 0.0444 0.4391 0.38708 2017 5 4 57877 0.0459 0.4402 0.38530 2017 5 5 57878 0.0473 0.4414 0.38353 2017 5 6 57879 0.0488 0.4425 0.38177 2017 5 7 57880 0.0503 0.4436 0.38007 2017 5 8 57881 0.0519 0.4447 0.37844 2017 5 9 57882 0.0534 0.4458 0.37692 2017 5 10 57883 0.0550 0.4468 0.37551 2017 5 11 57884 0.0566 0.4478 0.37424 2017 5 12 57885 0.0582 0.4488 0.37309 2017 5 13 57886 0.0598 0.4498 0.37204 2017 5 14 57887 0.0614 0.4507 0.37109 2017 5 15 57888 0.0631 0.4516 0.37018 2017 5 16 57889 0.0647 0.4525 0.36928 2017 5 17 57890 0.0664 0.4533 0.36833 2017 5 18 57891 0.0681 0.4542 0.36728 2017 5 19 57892 0.0698 0.4550 0.36612 2017 5 20 57893 0.0715 0.4558 0.36481 2017 5 21 57894 0.0733 0.4565 0.36337 2017 5 22 57895 0.0750 0.4573 0.36182 2017 5 23 57896 0.0768 0.4580 0.36020 2017 5 24 57897 0.0785 0.4586 0.35857 2017 5 25 57898 0.0803 0.4593 0.35698 2017 5 26 57899 0.0821 0.4599 0.35549 2017 5 27 57900 0.0839 0.4605 0.35412 2017 5 28 57901 0.0857 0.4611 0.35284 2017 5 29 57902 0.0876 0.4616 0.35159 2017 5 30 57903 0.0894 0.4621 0.35034 2017 5 31 57904 0.0912 0.4626 0.34901 2017 6 1 57905 0.0931 0.4630 0.34762 2017 6 2 57906 0.0949 0.4635 0.34624 2017 6 3 57907 0.0968 0.4639 0.34497 2017 6 4 57908 0.0986 0.4642 0.34373 2017 6 5 57909 0.1005 0.4646 0.34243 2017 6 6 57910 0.1024 0.4649 0.34131 2017 6 7 57911 0.1042 0.4651 0.34018 2017 6 8 57912 0.1061 0.4654 0.33928 2017 6 9 57913 0.1080 0.4656 0.33852 2017 6 10 57914 0.1099 0.4658 0.33785 2017 6 11 57915 0.1118 0.4660 0.33724 2017 6 12 57916 0.1137 0.4661 0.33666 2017 6 13 57917 0.1156 0.4662 0.33601 2017 6 14 57918 0.1174 0.4663 0.33531 2017 6 15 57919 0.1193 0.4663 0.33456 2017 6 16 57920 0.1212 0.4664 0.33372 2017 6 17 57921 0.1231 0.4664 0.33267 2017 6 18 57922 0.1250 0.4663 0.33164 2017 6 19 57923 0.1269 0.4662 0.33045 2017 6 20 57924 0.1288 0.4662 0.32915 2017 6 21 57925 0.1306 0.4660 0.32782 2017 6 22 57926 0.1325 0.4659 0.32664 2017 6 23 57927 0.1344 0.4657 0.32562 2017 6 24 57928 0.1362 0.4655 0.32469 2017 6 25 57929 0.1381 0.4652 0.32385 2017 6 26 57930 0.1399 0.4650 0.32313 2017 6 27 57931 0.1418 0.4647 0.32243 2017 6 28 57932 0.1436 0.4643 0.32156 2017 6 29 57933 0.1454 0.4640 0.32066 2017 6 30 57934 0.1473 0.4636 0.31978 2017 7 1 57935 0.1491 0.4632 0.31891 2017 7 2 57936 0.1509 0.4628 0.31816 2017 7 3 57937 0.1527 0.4623 0.31751 2017 7 4 57938 0.1544 0.4618 0.31701 2017 7 5 57939 0.1562 0.4613 0.31660 2017 7 6 57940 0.1580 0.4607 0.31648 2017 7 7 57941 0.1597 0.4602 0.31641 2017 7 8 57942 0.1615 0.4596 0.31642 2017 7 9 57943 0.1632 0.4589 0.31644 2017 7 10 57944 0.1649 0.4583 0.31643 2017 7 11 57945 0.1666 0.4576 0.31634 2017 7 12 57946 0.1683 0.4569 0.31608 2017 7 13 57947 0.1699 0.4562 0.31575 2017 7 14 57948 0.1716 0.4554 0.31516 2017 7 15 57949 0.1732 0.4546 0.31450 2017 7 16 57950 0.1748 0.4538 0.31364 2017 7 17 57951 0.1764 0.4530 0.31271 2017 7 18 57952 0.1780 0.4521 0.31182 2017 7 19 57953 0.1796 0.4512 0.31108 2017 7 20 57954 0.1811 0.4503 0.31031 2017 7 21 57955 0.1827 0.4494 0.30984 2017 7 22 57956 0.1842 0.4484 0.30945 2017 7 23 57957 0.1857 0.4475 0.30908 2017 7 24 57958 0.1871 0.4465 0.30868 2017 7 25 57959 0.1886 0.4454 0.30813 2017 7 26 57960 0.1900 0.4444 0.30754 2017 7 27 57961 0.1914 0.4433 0.30690 2017 7 28 57962 0.1928 0.4423 0.30612 2017 7 29 57963 0.1942 0.4411 0.30536 2017 7 30 57964 0.1955 0.4400 0.30461 2017 7 31 57965 0.1969 0.4389 0.30389 2017 8 1 57966 0.1982 0.4377 0.30321 2017 8 2 57967 0.1994 0.4365 0.30259 2017 8 3 57968 0.2007 0.4353 0.30202 2017 8 4 57969 0.2019 0.4341 0.30154 2017 8 5 57970 0.2031 0.4328 0.30104 2017 8 6 57971 0.2043 0.4316 0.30052 2017 8 7 57972 0.2055 0.4303 0.29989 2017 8 8 57973 0.2066 0.4290 0.29915 2017 8 9 57974 0.2077 0.4277 0.29837 2017 8 10 57975 0.2088 0.4263 0.29733 2017 8 11 57976 0.2098 0.4250 0.29618 2017 8 12 57977 0.2109 0.4236 0.29480 2017 8 13 57978 0.2119 0.4222 0.29341 2017 8 14 57979 0.2128 0.4208 0.29196 2017 8 15 57980 0.2138 0.4194 0.29050 2017 8 16 57981 0.2147 0.4180 0.28916 2017 8 17 57982 0.2156 0.4166 0.28785 2017 8 18 57983 0.2164 0.4151 0.28659 2017 8 19 57984 0.2173 0.4136 0.28526 2017 8 20 57985 0.2181 0.4122 0.28388 2017 8 21 57986 0.2189 0.4107 0.28242 2017 8 22 57987 0.2196 0.4092 0.28084 2017 8 23 57988 0.2203 0.4077 0.27921 2017 8 24 57989 0.2210 0.4061 0.27759 2017 8 25 57990 0.2217 0.4046 0.27598 2017 8 26 57991 0.2223 0.4031 0.27446 2017 8 27 57992 0.2229 0.4015 0.27311 2017 8 28 57993 0.2235 0.3999 0.27190 2017 8 29 57994 0.2240 0.3984 0.27085 2017 8 30 57995 0.2245 0.3968 0.26998 2017 8 31 57996 0.2250 0.3952 0.26926 2017 9 1 57997 0.2255 0.3936 0.26849 2017 9 2 57998 0.2259 0.3920 0.26781 2017 9 3 57999 0.2263 0.3904 0.26702 2017 9 4 58000 0.2267 0.3888 0.26604 2017 9 5 58001 0.2270 0.3872 0.26494 2017 9 6 58002 0.2273 0.3856 0.26368 2017 9 7 58003 0.2276 0.3840 0.26228 2017 9 8 58004 0.2278 0.3823 0.26085 2017 9 9 58005 0.2280 0.3807 0.25932 2017 9 10 58006 0.2282 0.3791 0.25780 2017 9 11 58007 0.2283 0.3774 0.25631 2017 9 12 58008 0.2284 0.3758 0.25491 2017 9 13 58009 0.2285 0.3742 0.25360 2017 9 14 58010 0.2286 0.3725 0.25229 2017 9 15 58011 0.2286 0.3709 0.25100 2017 9 16 58012 0.2286 0.3692 0.24967 2017 9 17 58013 0.2285 0.3676 0.24819 2017 9 18 58014 0.2285 0.3660 0.24658 2017 9 19 58015 0.2284 0.3643 0.24494 2017 9 20 58016 0.2282 0.3627 0.24323 2017 9 21 58017 0.2281 0.3611 0.24156 2017 9 22 58018 0.2279 0.3595 0.23987 2017 9 23 58019 0.2276 0.3578 0.23825 2017 9 24 58020 0.2274 0.3562 0.23670 2017 9 25 58021 0.2271 0.3546 0.23532 2017 9 26 58022 0.2268 0.3530 0.23405 2017 9 27 58023 0.2264 0.3514 0.23292 2017 9 28 58024 0.2261 0.3498 0.23193 2017 9 29 58025 0.2256 0.3482 0.23101 2017 9 30 58026 0.2252 0.3466 0.23008 2017 10 1 58027 0.2247 0.3451 0.22905 2017 10 2 58028 0.2242 0.3435 0.22795 2017 10 3 58029 0.2237 0.3419 0.22671 2017 10 4 58030 0.2232 0.3404 0.22538 2017 10 5 58031 0.2226 0.3388 0.22385 2017 10 6 58032 0.2220 0.3373 0.22222 2017 10 7 58033 0.2213 0.3358 0.22053 2017 10 8 58034 0.2207 0.3343 0.21880 2017 10 9 58035 0.2200 0.3328 0.21711 2017 10 10 58036 0.2192 0.3313 0.21550 2017 10 11 58037 0.2185 0.3298 0.21400 2017 10 12 58038 0.2177 0.3284 0.21251 2017 10 13 58039 0.2169 0.3269 0.21110 2017 10 14 58040 0.2161 0.3255 0.20963 2017 10 15 58041 0.2152 0.3240 0.20808 2017 10 16 58042 0.2143 0.3226 0.20644 2017 10 17 58043 0.2134 0.3212 0.20473 2017 10 18 58044 0.2125 0.3199 0.20296 2017 10 19 58045 0.2115 0.3185 0.20119 2017 10 20 58046 0.2105 0.3172 0.19949 These predictions are based on all announced leap seconds. 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).