********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 22 September 2016 Vol. XXIX No. 038 ______________________________________________________________________ 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. * * * * 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 9 16 57647 0.23691 .00009 0.36247 .00009 -0.259566 0.000014 16 9 17 57648 0.23733 .00009 0.36056 .00010 -0.260929 0.000015 16 9 18 57649 0.23755 .00009 0.35874 .00009 -0.262435 0.000014 16 9 19 57650 0.23753 .00009 0.35697 .00009 -0.263873 0.000010 16 9 20 57651 0.23733 .00009 0.35512 .00009 -0.265329 0.000010 16 9 21 57652 0.23701 .00009 0.35310 .00009 -0.266678 0.000010 16 9 22 57653 0.23662 .00009 0.35097 .00009 -0.267879 0.000055 _______________________________________________________________________ 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 = 0.1092 + 0.1024 cos A - 0.0198 sin A + 0.0256 cos C - 0.0053 sin C y = 0.3710 - 0.0162 cos A - 0.0996 sin A - 0.0053 cos C - 0.0256 sin C UT1-UTC = -0.2966 - 0.00140 (MJD - 57661) - (UT2-UT1) where A = 2*pi*(MJD-57653)/365.25 and C = 2*pi*(MJD-57653)/435. TAI-UTC(MJD 57654) = 36.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57653)**0.80 S t = 0.00025 (MJD-57653)**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 9 23 57654 0.2362 0.3489 -0.26905 2016 9 24 57655 0.2358 0.3469 -0.27017 2016 9 25 57656 0.2354 0.3450 -0.27126 2016 9 26 57657 0.2350 0.3431 -0.27236 2016 9 27 57658 0.2346 0.3412 -0.27348 2016 9 28 57659 0.2341 0.3394 -0.27464 2016 9 29 57660 0.2336 0.3376 -0.27583 2016 9 30 57661 0.2330 0.3358 -0.27705 2016 10 1 57662 0.2325 0.3340 -0.27828 2016 10 2 57663 0.2319 0.3322 -0.27955 2016 10 3 57664 0.2313 0.3304 -0.28082 2016 10 4 57665 0.2306 0.3287 -0.28207 2016 10 5 57666 0.2300 0.3269 -0.28323 2016 10 6 57667 0.2293 0.3252 -0.28429 2016 10 7 57668 0.2285 0.3235 -0.28528 2016 10 8 57669 0.2277 0.3219 -0.28625 2016 10 9 57670 0.2269 0.3202 -0.28724 2016 10 10 57671 0.2260 0.3185 -0.28832 2016 10 11 57672 0.2251 0.3169 -0.28954 2016 10 12 57673 0.2241 0.3152 -0.29095 2016 10 13 57674 0.2232 0.3136 -0.29257 2016 10 14 57675 0.2222 0.3119 -0.29438 2016 10 15 57676 0.2212 0.3103 -0.29634 2016 10 16 57677 0.2201 0.3088 -0.29837 2016 10 17 57678 0.2190 0.3072 -0.30036 2016 10 18 57679 0.2179 0.3056 -0.30226 2016 10 19 57680 0.2168 0.3041 -0.30400 2016 10 20 57681 0.2156 0.3026 -0.30558 2016 10 21 57682 0.2144 0.3011 -0.30706 2016 10 22 57683 0.2132 0.2996 -0.30849 2016 10 23 57684 0.2120 0.2982 -0.30991 2016 10 24 57685 0.2107 0.2967 -0.31138 2016 10 25 57686 0.2094 0.2953 -0.31292 2016 10 26 57687 0.2081 0.2939 -0.31452 2016 10 27 57688 0.2067 0.2925 -0.31617 2016 10 28 57689 0.2053 0.2912 -0.31785 2016 10 29 57690 0.2039 0.2898 -0.31951 2016 10 30 57691 0.2025 0.2885 -0.32113 2016 10 31 57692 0.2011 0.2872 -0.32268 2016 11 1 57693 0.1996 0.2860 -0.32415 2016 11 2 57694 0.1981 0.2847 -0.32553 2016 11 3 57695 0.1966 0.2835 -0.32683 2016 11 4 57696 0.1950 0.2823 -0.32806 2016 11 5 57697 0.1935 0.2811 -0.32929 2016 11 6 57698 0.1919 0.2799 -0.33054 2016 11 7 57699 0.1903 0.2788 -0.33187 2016 11 8 57700 0.1887 0.2777 -0.33332 2016 11 9 57701 0.1871 0.2766 -0.33494 2016 11 10 57702 0.1854 0.2756 -0.33673 2016 11 11 57703 0.1837 0.2746 -0.33869 2016 11 12 57704 0.1820 0.2736 -0.34076 2016 11 13 57705 0.1803 0.2726 -0.34287 2016 11 14 57706 0.1786 0.2716 -0.34491 2016 11 15 57707 0.1769 0.2707 -0.34683 2016 11 16 57708 0.1751 0.2698 -0.34860 2016 11 17 57709 0.1733 0.2689 -0.35022 2016 11 18 57710 0.1715 0.2681 -0.35176 2016 11 19 57711 0.1697 0.2673 -0.35326 2016 11 20 57712 0.1679 0.2665 -0.35478 2016 11 21 57713 0.1661 0.2657 -0.35633 2016 11 22 57714 0.1643 0.2650 -0.35791 2016 11 23 57715 0.1624 0.2643 -0.35951 2016 11 24 57716 0.1605 0.2636 -0.36112 2016 11 25 57717 0.1587 0.2630 -0.36271 2016 11 26 57718 0.1568 0.2624 -0.36424 2016 11 27 57719 0.1549 0.2618 -0.36572 2016 11 28 57720 0.1530 0.2612 -0.36711 2016 11 29 57721 0.1511 0.2607 -0.36842 2016 11 30 57722 0.1491 0.2602 -0.36966 2016 12 1 57723 0.1472 0.2598 -0.37085 2016 12 2 57724 0.1453 0.2593 -0.37201 2016 12 3 57725 0.1433 0.2589 -0.37320 2016 12 4 57726 0.1414 0.2585 -0.37446 2016 12 5 57727 0.1394 0.2582 -0.37583 2016 12 6 57728 0.1375 0.2579 -0.37734 2016 12 7 57729 0.1355 0.2576 -0.37900 2016 12 8 57730 0.1335 0.2573 -0.38083 2016 12 9 57731 0.1315 0.2571 -0.38277 2016 12 10 57732 0.1296 0.2569 -0.38477 2016 12 11 57733 0.1276 0.2568 -0.38675 2016 12 12 57734 0.1256 0.2566 -0.38863 2016 12 13 57735 0.1236 0.2565 -0.39038 2016 12 14 57736 0.1217 0.2564 -0.39199 2016 12 15 57737 0.1197 0.2564 -0.39350 2016 12 16 57738 0.1177 0.2564 -0.39496 2016 12 17 57739 0.1157 0.2564 -0.39642 2016 12 18 57740 0.1137 0.2565 -0.39792 2016 12 19 57741 0.1118 0.2565 -0.39946 2016 12 20 57742 0.1098 0.2567 -0.40102 2016 12 21 57743 0.1078 0.2568 -0.40258 2016 12 22 57744 0.1059 0.2570 -0.40412 2016 12 23 57745 0.1039 0.2572 -0.40560 2016 12 24 57746 0.1019 0.2574 -0.40700 2016 12 25 57747 0.1000 0.2577 -0.40831 2016 12 26 57748 0.0981 0.2580 -0.40953 2016 12 27 57749 0.0961 0.2583 -0.41067 2016 12 28 57750 0.0942 0.2586 -0.41173 2016 12 29 57751 0.0923 0.2590 -0.41275 2016 12 30 57752 0.0904 0.2594 -0.41378 2016 12 31 57753 0.0885 0.2599 -0.41485 2017 1 1 57754 0.0866 0.2603 0.58399 2017 1 2 57755 0.0847 0.2608 0.58269 2017 1 3 57756 0.0828 0.2614 0.58126 2017 1 4 57757 0.0809 0.2619 0.57968 2017 1 5 57758 0.0791 0.2625 0.57799 2017 1 6 57759 0.0773 0.2631 0.57624 2017 1 7 57760 0.0754 0.2638 0.57448 2017 1 8 57761 0.0736 0.2644 0.57277 2017 1 9 57762 0.0718 0.2651 0.57122 2017 1 10 57763 0.0700 0.2659 0.56979 2017 1 11 57764 0.0683 0.2666 0.56844 2017 1 12 57765 0.0665 0.2674 0.56714 2017 1 13 57766 0.0648 0.2682 0.56583 2017 1 14 57767 0.0631 0.2691 0.56446 2017 1 15 57768 0.0613 0.2699 0.56302 2017 1 16 57769 0.0597 0.2708 0.56153 2017 1 17 57770 0.0580 0.2717 0.56000 2017 1 18 57771 0.0563 0.2727 0.55848 2017 1 19 57772 0.0547 0.2736 0.55699 2017 1 20 57773 0.0531 0.2746 0.55557 2017 1 21 57774 0.0515 0.2756 0.55422 2017 1 22 57775 0.0499 0.2767 0.55297 2017 1 23 57776 0.0484 0.2777 0.55179 2017 1 24 57777 0.0468 0.2788 0.55067 2017 1 25 57778 0.0453 0.2799 0.54960 2017 1 26 57779 0.0438 0.2811 0.54852 2017 1 27 57780 0.0423 0.2822 0.54739 2017 1 28 57781 0.0409 0.2834 0.54617 2017 1 29 57782 0.0395 0.2846 0.54482 2017 1 30 57783 0.0381 0.2859 0.54332 2017 1 31 57784 0.0367 0.2871 0.54166 2017 2 1 57785 0.0353 0.2884 0.53989 2017 2 2 57786 0.0340 0.2897 0.53804 2017 2 3 57787 0.0327 0.2910 0.53619 2017 2 4 57788 0.0314 0.2923 0.53440 2017 2 5 57789 0.0302 0.2937 0.53269 2017 2 6 57790 0.0289 0.2950 0.53109 2017 2 7 57791 0.0277 0.2964 0.52959 2017 2 8 57792 0.0265 0.2978 0.52813 2017 2 9 57793 0.0254 0.2992 0.52667 2017 2 10 57794 0.0243 0.3007 0.52514 2017 2 11 57795 0.0232 0.3021 0.52353 2017 2 12 57796 0.0221 0.3036 0.52183 2017 2 13 57797 0.0211 0.3051 0.52007 2017 2 14 57798 0.0201 0.3066 0.51828 2017 2 15 57799 0.0191 0.3082 0.51652 2017 2 16 57800 0.0181 0.3097 0.51480 2017 2 17 57801 0.0172 0.3112 0.51315 2017 2 18 57802 0.0163 0.3128 0.51160 2017 2 19 57803 0.0154 0.3144 0.51013 2017 2 20 57804 0.0146 0.3160 0.50873 2017 2 21 57805 0.0138 0.3176 0.50738 2017 2 22 57806 0.0130 0.3192 0.50604 2017 2 23 57807 0.0123 0.3209 0.50466 2017 2 24 57808 0.0115 0.3225 0.50320 2017 2 25 57809 0.0109 0.3242 0.50161 2017 2 26 57810 0.0102 0.3258 0.49986 2017 2 27 57811 0.0096 0.3275 0.49793 2017 2 28 57812 0.0090 0.3292 0.49584 2017 3 1 57813 0.0084 0.3309 0.49366 2017 3 2 57814 0.0079 0.3326 0.49146 2017 3 3 57815 0.0074 0.3343 0.48931 2017 3 4 57816 0.0069 0.3360 0.48727 2017 3 5 57817 0.0065 0.3377 0.48535 2017 3 6 57818 0.0061 0.3395 0.48354 2017 3 7 57819 0.0057 0.3412 0.48180 2017 3 8 57820 0.0054 0.3430 0.48008 2017 3 9 57821 0.0051 0.3447 0.47832 2017 3 10 57822 0.0048 0.3465 0.47648 2017 3 11 57823 0.0046 0.3482 0.47455 2017 3 12 57824 0.0044 0.3500 0.47253 2017 3 13 57825 0.0042 0.3517 0.47046 2017 3 14 57826 0.0040 0.3535 0.46839 2017 3 15 57827 0.0039 0.3553 0.46635 2017 3 16 57828 0.0038 0.3571 0.46437 2017 3 17 57829 0.0038 0.3588 0.46248 2017 3 18 57830 0.0038 0.3606 0.46069 2017 3 19 57831 0.0038 0.3624 0.45898 2017 3 20 57832 0.0039 0.3641 0.45733 2017 3 21 57833 0.0039 0.3659 0.45572 2017 3 22 57834 0.0041 0.3677 0.45410 2017 3 23 57835 0.0042 0.3695 0.45242 2017 3 24 57836 0.0044 0.3712 0.45064 2017 3 25 57837 0.0046 0.3730 0.44871 2017 3 26 57838 0.0048 0.3748 0.44662 2017 3 27 57839 0.0051 0.3765 0.44435 2017 3 28 57840 0.0054 0.3783 0.44196 2017 3 29 57841 0.0058 0.3800 0.43951 2017 3 30 57842 0.0061 0.3818 0.43710 2017 3 31 57843 0.0065 0.3835 0.43481 2017 4 1 57844 0.0070 0.3852 0.43269 2017 4 2 57845 0.0074 0.3870 0.43073 2017 4 3 57846 0.0079 0.3887 0.42891 2017 4 4 57847 0.0085 0.3904 0.42718 2017 4 5 57848 0.0090 0.3921 0.42547 2017 4 6 57849 0.0096 0.3938 0.42372 2017 4 7 57850 0.0102 0.3955 0.42189 2017 4 8 57851 0.0109 0.3971 0.41998 2017 4 9 57852 0.0116 0.3988 0.41800 2017 4 10 57853 0.0123 0.4004 0.41597 2017 4 11 57854 0.0130 0.4021 0.41393 2017 4 12 57855 0.0138 0.4037 0.41193 2017 4 13 57856 0.0146 0.4053 0.41000 2017 4 14 57857 0.0154 0.4069 0.40814 2017 4 15 57858 0.0163 0.4085 0.40638 2017 4 16 57859 0.0172 0.4101 0.40471 2017 4 17 57860 0.0181 0.4117 0.40310 2017 4 18 57861 0.0190 0.4132 0.40153 2017 4 19 57862 0.0200 0.4148 0.39994 2017 4 20 57863 0.0210 0.4163 0.39828 2017 4 21 57864 0.0220 0.4178 0.39652 2017 4 22 57865 0.0230 0.4193 0.39462 2017 4 23 57866 0.0241 0.4208 0.39255 2017 4 24 57867 0.0252 0.4222 0.39033 2017 4 25 57868 0.0263 0.4237 0.38798 2017 4 26 57869 0.0275 0.4251 0.38556 2017 4 27 57870 0.0287 0.4265 0.38320 2017 4 28 57871 0.0299 0.4279 0.38097 2017 4 29 57872 0.0311 0.4293 0.37892 2017 4 30 57873 0.0323 0.4306 0.37704 2017 5 1 57874 0.0336 0.4320 0.37533 2017 5 2 57875 0.0349 0.4333 0.37371 2017 5 3 57876 0.0362 0.4346 0.37202 2017 5 4 57877 0.0376 0.4359 0.37028 2017 5 5 57878 0.0389 0.4371 0.36853 2017 5 6 57879 0.0403 0.4383 0.36673 2017 5 7 57880 0.0417 0.4396 0.36498 2017 5 8 57881 0.0432 0.4407 0.36328 2017 5 9 57882 0.0446 0.4419 0.36169 2017 5 10 57883 0.0461 0.4431 0.36017 2017 5 11 57884 0.0475 0.4442 0.35895 2017 5 12 57885 0.0491 0.4453 0.35780 2017 5 13 57886 0.0506 0.4464 0.35679 2017 5 14 57887 0.0521 0.4474 0.35584 2017 5 15 57888 0.0537 0.4484 0.35494 2017 5 16 57889 0.0552 0.4495 0.35403 2017 5 17 57890 0.0568 0.4504 0.35302 2017 5 18 57891 0.0584 0.4514 0.35199 2017 5 19 57892 0.0601 0.4523 0.35071 2017 5 20 57893 0.0617 0.4532 0.34934 2017 5 21 57894 0.0634 0.4541 0.34772 2017 5 22 57895 0.0650 0.4550 0.34594 2017 5 23 57896 0.0667 0.4558 0.34413 2017 5 24 57897 0.0684 0.4566 0.34241 2017 5 25 57898 0.0701 0.4574 0.34065 2017 5 26 57899 0.0718 0.4582 0.33926 2017 5 27 57900 0.0736 0.4589 0.33804 2017 5 28 57901 0.0753 0.4596 0.33695 2017 5 29 57902 0.0771 0.4603 0.33595 2017 5 30 57903 0.0788 0.4609 0.33490 2017 5 31 57904 0.0806 0.4615 0.33386 2017 6 1 57905 0.0824 0.4621 0.33279 2017 6 2 57906 0.0842 0.4627 0.33155 2017 6 3 57907 0.0860 0.4632 0.33031 2017 6 4 57908 0.0878 0.4637 0.32903 2017 6 5 57909 0.0896 0.4642 0.32777 2017 6 6 57910 0.0914 0.4647 0.32654 2017 6 7 57911 0.0932 0.4651 0.32537 2017 6 8 57912 0.0951 0.4655 0.32427 2017 6 9 57913 0.0969 0.4659 0.32334 2017 6 10 57914 0.0988 0.4662 0.32246 2017 6 11 57915 0.1006 0.4665 0.32165 2017 6 12 57916 0.1025 0.4668 0.32082 2017 6 13 57917 0.1043 0.4671 0.31998 2017 6 14 57918 0.1062 0.4673 0.31916 2017 6 15 57919 0.1080 0.4675 0.31815 2017 6 16 57920 0.1099 0.4677 0.31703 2017 6 17 57921 0.1117 0.4679 0.31566 2017 6 18 57922 0.1136 0.4680 0.31421 2017 6 19 57923 0.1155 0.4681 0.31260 2017 6 20 57924 0.1173 0.4681 0.31092 2017 6 21 57925 0.1192 0.4682 0.30930 2017 6 22 57926 0.1210 0.4682 0.30775 2017 6 23 57927 0.1229 0.4681 0.30632 2017 6 24 57928 0.1247 0.4681 0.30493 2017 6 25 57929 0.1266 0.4680 0.30363 2017 6 26 57930 0.1284 0.4679 0.30234 2017 6 27 57931 0.1303 0.4678 0.30103 2017 6 28 57932 0.1321 0.4676 0.29970 2017 6 29 57933 0.1339 0.4674 0.29838 2017 6 30 57934 0.1357 0.4672 0.29706 2017 7 1 57935 0.1375 0.4670 0.29581 2017 7 2 57936 0.1394 0.4667 0.29470 2017 7 3 57937 0.1412 0.4664 0.29373 2017 7 4 57938 0.1429 0.4660 0.29292 2017 7 5 57939 0.1447 0.4657 0.29232 2017 7 6 57940 0.1465 0.4653 0.29191 2017 7 7 57941 0.1483 0.4649 0.29152 2017 7 8 57942 0.1500 0.4645 0.29130 2017 7 9 57943 0.1518 0.4640 0.29107 2017 7 10 57944 0.1535 0.4635 0.29073 2017 7 11 57945 0.1552 0.4630 0.29036 2017 7 12 57946 0.1569 0.4624 0.28989 2017 7 13 57947 0.1586 0.4619 0.28932 2017 7 14 57948 0.1603 0.4613 0.28870 2017 7 15 57949 0.1620 0.4607 0.28796 2017 7 16 57950 0.1636 0.4600 0.28712 2017 7 17 57951 0.1653 0.4594 0.28622 2017 7 18 57952 0.1669 0.4587 0.28532 2017 7 19 57953 0.1685 0.4579 0.28449 2017 7 20 57954 0.1701 0.4572 0.28368 2017 7 21 57955 0.1717 0.4564 0.28297 2017 7 22 57956 0.1732 0.4556 0.28232 2017 7 23 57957 0.1748 0.4548 0.28161 2017 7 24 57958 0.1763 0.4540 0.28085 2017 7 25 57959 0.1778 0.4531 0.28008 2017 7 26 57960 0.1793 0.4522 0.27924 2017 7 27 57961 0.1808 0.4513 0.27841 2017 7 28 57962 0.1822 0.4504 0.27754 2017 7 29 57963 0.1837 0.4495 0.27670 2017 7 30 57964 0.1851 0.4485 0.27592 2017 7 31 57965 0.1865 0.4475 0.27528 2017 8 1 57966 0.1879 0.4465 0.27478 2017 8 2 57967 0.1892 0.4455 0.27442 2017 8 3 57968 0.1905 0.4444 0.27424 2017 8 4 57969 0.1918 0.4433 0.27419 2017 8 5 57970 0.1931 0.4422 0.27420 2017 8 6 57971 0.1944 0.4411 0.27417 2017 8 7 57972 0.1956 0.4400 0.27415 2017 8 8 57973 0.1969 0.4388 0.27402 2017 8 9 57974 0.1981 0.4377 0.27384 2017 8 10 57975 0.1992 0.4365 0.27346 2017 8 11 57976 0.2004 0.4353 0.27295 2017 8 12 57977 0.2015 0.4341 0.27231 2017 8 13 57978 0.2026 0.4328 0.27153 2017 8 14 57979 0.2037 0.4316 0.27069 2017 8 15 57980 0.2047 0.4303 0.26985 2017 8 16 57981 0.2057 0.4290 0.26910 2017 8 17 57982 0.2067 0.4277 0.26838 2017 8 18 57983 0.2077 0.4264 0.26780 2017 8 19 57984 0.2086 0.4251 0.26723 2017 8 20 57985 0.2096 0.4237 0.26662 2017 8 21 57986 0.2104 0.4224 0.26592 2017 8 22 57987 0.2113 0.4210 0.26511 2017 8 23 57988 0.2121 0.4196 0.26419 2017 8 24 57989 0.2130 0.4182 0.26321 2017 8 25 57990 0.2137 0.4168 0.26224 2017 8 26 57991 0.2145 0.4154 0.26139 2017 8 27 57992 0.2152 0.4140 0.26064 2017 8 28 57993 0.2159 0.4126 0.25997 2017 8 29 57994 0.2166 0.4111 0.25934 2017 8 30 57995 0.2172 0.4097 0.25874 2017 8 31 57996 0.2178 0.4082 0.25821 2017 9 1 57997 0.2184 0.4067 0.25767 2017 9 2 57998 0.2190 0.4052 0.25710 2017 9 3 57999 0.2195 0.4037 0.25638 2017 9 4 58000 0.2200 0.4022 0.25557 2017 9 5 58001 0.2205 0.4007 0.25462 2017 9 6 58002 0.2209 0.3992 0.25352 2017 9 7 58003 0.2213 0.3977 0.25227 2017 9 8 58004 0.2217 0.3962 0.25089 2017 9 9 58005 0.2220 0.3947 0.24948 2017 9 10 58006 0.2223 0.3931 0.24806 2017 9 11 58007 0.2226 0.3916 0.24665 2017 9 12 58008 0.2229 0.3901 0.24525 2017 9 13 58009 0.2231 0.3885 0.24392 2017 9 14 58010 0.2233 0.3870 0.24273 2017 9 15 58011 0.2235 0.3854 0.24167 2017 9 16 58012 0.2236 0.3839 0.24063 2017 9 17 58013 0.2237 0.3823 0.23941 2017 9 18 58014 0.2238 0.3808 0.23799 2017 9 19 58015 0.2239 0.3792 0.23651 2017 9 20 58016 0.2239 0.3777 0.23496 2017 9 21 58017 0.2239 0.3761 0.23342 2017 9 22 58018 0.2239 0.3746 0.23188 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) 57631 -105.42 0.30 -13.28 0.03 57632 -105.22 0.30 -13.08 0.03 57633 -105.22 0.30 -12.88 0.03 57634 -105.38 0.30 -12.71 0.15 57635 -105.66 0.30 -12.65 0.15 57636 -105.97 0.30 -12.71 0.07 57637 -106.09 0.30 -12.86 0.07 57638 -105.89 0.30 -12.97 0.07 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57631 0.180 0.119 -0.125 0.030 57632 0.173 0.119 -0.102 0.030 57633 0.160 0.119 -0.067 0.030 57634 0.148 0.119 -0.006 0.150 57635 0.138 0.119 0.041 0.150 57636 0.112 0.119 0.071 0.070 57637 0.078 0.119 0.070 0.070 57638 0.060 0.119 0.086 0.070 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).