********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 8 September 2016 Vol. XXIX No. 036 ______________________________________________________________________ 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 2 57633 0.23682 .00009 0.38804 .00009 -0.247388 0.000025 16 9 3 57634 0.23664 .00009 0.38701 .00009 -0.248197 0.000022 16 9 4 57635 0.23602 .00009 0.38569 .00009 -0.249111 0.000017 16 9 5 57636 0.23523 .00009 0.38400 .00009 -0.250080 0.000015 16 9 6 57637 0.23463 .00009 0.38211 .00009 -0.250986 0.000014 16 9 7 57638 0.23445 .00009 0.38010 .00009 -0.251951 0.000013 16 9 8 57639 0.23455 .00009 0.37800 .00009 -0.252785 0.000014 _______________________________________________________________________ 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 = 0.1039 + 0.1047 cos A + 0.0076 sin A + 0.0266 cos C - 0.0023 sin C y = 0.3706 + 0.0098 cos A - 0.1012 sin A - 0.0023 cos C - 0.0266 sin C UT1-UTC = -0.2836 - 0.00141 (MJD - 57647) - (UT2-UT1) where A = 2*pi*(MJD-57639)/365.25 and C = 2*pi*(MJD-57639)/435. TAI-UTC(MJD 57640) = 36.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57639)**0.80 S t = 0.00025 (MJD-57639)**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 9 57640 0.2347 0.3760 -0.25355 2016 9 10 57641 0.2349 0.3739 -0.25426 2016 9 11 57642 0.2350 0.3719 -0.25495 2016 9 12 57643 0.2350 0.3700 -0.25567 2016 9 13 57644 0.2350 0.3681 -0.25643 2016 9 14 57645 0.2349 0.3662 -0.25731 2016 9 15 57646 0.2349 0.3644 -0.25835 2016 9 16 57647 0.2348 0.3625 -0.25958 2016 9 17 57648 0.2346 0.3607 -0.26098 2016 9 18 57649 0.2345 0.3588 -0.26252 2016 9 19 57650 0.2343 0.3569 -0.26411 2016 9 20 57651 0.2342 0.3551 -0.26567 2016 9 21 57652 0.2340 0.3533 -0.26714 2016 9 22 57653 0.2336 0.3516 -0.26847 2016 9 23 57654 0.2332 0.3499 -0.26966 2016 9 24 57655 0.2328 0.3481 -0.27076 2016 9 25 57656 0.2323 0.3463 -0.27185 2016 9 26 57657 0.2318 0.3445 -0.27298 2016 9 27 57658 0.2313 0.3427 -0.27419 2016 9 28 57659 0.2308 0.3409 -0.27549 2016 9 29 57660 0.2303 0.3391 -0.27686 2016 9 30 57661 0.2297 0.3374 -0.27828 2016 10 1 57662 0.2291 0.3357 -0.27971 2016 10 2 57663 0.2285 0.3339 -0.28113 2016 10 3 57664 0.2278 0.3322 -0.28251 2016 10 4 57665 0.2271 0.3305 -0.28383 2016 10 5 57666 0.2264 0.3288 -0.28511 2016 10 6 57667 0.2256 0.3271 -0.28633 2016 10 7 57668 0.2248 0.3255 -0.28751 2016 10 8 57669 0.2240 0.3238 -0.28869 2016 10 9 57670 0.2232 0.3222 -0.28990 2016 10 10 57671 0.2223 0.3206 -0.29118 2016 10 11 57672 0.2214 0.3190 -0.29258 2016 10 12 57673 0.2205 0.3174 -0.29413 2016 10 13 57674 0.2195 0.3158 -0.29586 2016 10 14 57675 0.2185 0.3142 -0.29776 2016 10 15 57676 0.2175 0.3127 -0.29981 2016 10 16 57677 0.2164 0.3111 -0.30191 2016 10 17 57678 0.2153 0.3096 -0.30397 2016 10 18 57679 0.2142 0.3081 -0.30591 2016 10 19 57680 0.2131 0.3066 -0.30769 2016 10 20 57681 0.2119 0.3052 -0.30931 2016 10 21 57682 0.2107 0.3037 -0.31083 2016 10 22 57683 0.2095 0.3023 -0.31230 2016 10 23 57684 0.2083 0.3009 -0.31378 2016 10 24 57685 0.2070 0.2995 -0.31531 2016 10 25 57686 0.2057 0.2981 -0.31691 2016 10 26 57687 0.2044 0.2968 -0.31857 2016 10 27 57688 0.2031 0.2954 -0.32027 2016 10 28 57689 0.2017 0.2941 -0.32198 2016 10 29 57690 0.2004 0.2928 -0.32367 2016 10 30 57691 0.1989 0.2916 -0.32531 2016 10 31 57692 0.1975 0.2903 -0.32688 2016 11 1 57693 0.1961 0.2891 -0.32836 2016 11 2 57694 0.1946 0.2879 -0.32975 2016 11 3 57695 0.1931 0.2867 -0.33108 2016 11 4 57696 0.1916 0.2856 -0.33236 2016 11 5 57697 0.1901 0.2844 -0.33363 2016 11 6 57698 0.1885 0.2833 -0.33495 2016 11 7 57699 0.1869 0.2822 -0.33637 2016 11 8 57700 0.1853 0.2812 -0.33792 2016 11 9 57701 0.1837 0.2802 -0.33965 2016 11 10 57702 0.1821 0.2791 -0.34156 2016 11 11 57703 0.1804 0.2782 -0.34365 2016 11 12 57704 0.1788 0.2772 -0.34586 2016 11 13 57705 0.1771 0.2763 -0.34810 2016 11 14 57706 0.1754 0.2754 -0.35029 2016 11 15 57707 0.1737 0.2745 -0.35236 2016 11 16 57708 0.1720 0.2736 -0.35426 2016 11 17 57709 0.1702 0.2728 -0.35604 2016 11 18 57710 0.1685 0.2720 -0.35773 2016 11 19 57711 0.1667 0.2712 -0.35938 2016 11 20 57712 0.1649 0.2705 -0.36105 2016 11 21 57713 0.1631 0.2697 -0.36276 2016 11 22 57714 0.1613 0.2690 -0.36450 2016 11 23 57715 0.1595 0.2684 -0.36626 2016 11 24 57716 0.1577 0.2677 -0.36803 2016 11 25 57717 0.1558 0.2671 -0.36976 2016 11 26 57718 0.1540 0.2665 -0.37143 2016 11 27 57719 0.1521 0.2660 -0.37303 2016 11 28 57720 0.1502 0.2655 -0.37453 2016 11 29 57721 0.1484 0.2650 -0.37594 2016 11 30 57722 0.1465 0.2645 -0.37725 2016 12 1 57723 0.1446 0.2641 -0.37850 2016 12 2 57724 0.1427 0.2637 -0.37972 2016 12 3 57725 0.1408 0.2633 -0.38093 2016 12 4 57726 0.1389 0.2629 -0.38220 2016 12 5 57727 0.1370 0.2626 -0.38357 2016 12 6 57728 0.1351 0.2623 -0.38507 2016 12 7 57729 0.1331 0.2621 -0.38671 2016 12 8 57730 0.1312 0.2618 -0.38849 2016 12 9 57731 0.1293 0.2616 -0.39039 2016 12 10 57732 0.1273 0.2614 -0.39234 2016 12 11 57733 0.1254 0.2613 -0.39429 2016 12 12 57734 0.1235 0.2612 -0.39614 2016 12 13 57735 0.1215 0.2611 -0.39786 2016 12 14 57736 0.1196 0.2611 -0.39945 2016 12 15 57737 0.1177 0.2610 -0.40093 2016 12 16 57738 0.1157 0.2610 -0.40238 2016 12 17 57739 0.1138 0.2611 -0.40383 2016 12 18 57740 0.1119 0.2611 -0.40533 2016 12 19 57741 0.1099 0.2612 -0.40687 2016 12 20 57742 0.1080 0.2614 -0.40844 2016 12 21 57743 0.1061 0.2615 -0.41001 2016 12 22 57744 0.1042 0.2617 -0.41157 2016 12 23 57745 0.1023 0.2619 -0.41307 2016 12 24 57746 0.1004 0.2621 -0.41451 2016 12 25 57747 0.0985 0.2624 -0.41586 2016 12 26 57748 0.0966 0.2627 -0.41707 2016 12 27 57749 0.0947 0.2630 -0.41820 2016 12 28 57750 0.0928 0.2634 -0.41926 2016 12 29 57751 0.0909 0.2638 -0.42029 2016 12 30 57752 0.0891 0.2642 -0.42132 2016 12 31 57753 0.0872 0.2647 -0.42240 2017 1 1 57754 0.0854 0.2651 0.57643 2017 1 2 57755 0.0835 0.2656 0.57514 2017 1 3 57756 0.0817 0.2662 0.57371 2017 1 4 57757 0.0799 0.2667 0.57214 2017 1 5 57758 0.0781 0.2673 0.57046 2017 1 6 57759 0.0763 0.2679 0.56871 2017 1 7 57760 0.0745 0.2685 0.56697 2017 1 8 57761 0.0728 0.2692 0.56528 2017 1 9 57762 0.0710 0.2699 0.56369 2017 1 10 57763 0.0693 0.2706 0.56222 2017 1 11 57764 0.0676 0.2714 0.56084 2017 1 12 57765 0.0659 0.2722 0.55950 2017 1 13 57766 0.0642 0.2730 0.55815 2017 1 14 57767 0.0625 0.2738 0.55675 2017 1 15 57768 0.0608 0.2746 0.55528 2017 1 16 57769 0.0592 0.2755 0.55375 2017 1 17 57770 0.0576 0.2764 0.55219 2017 1 18 57771 0.0560 0.2773 0.55064 2017 1 19 57772 0.0544 0.2783 0.54913 2017 1 20 57773 0.0528 0.2793 0.54768 2017 1 21 57774 0.0513 0.2803 0.54631 2017 1 22 57775 0.0498 0.2813 0.54503 2017 1 23 57776 0.0482 0.2823 0.54383 2017 1 24 57777 0.0468 0.2834 0.54270 2017 1 25 57778 0.0453 0.2845 0.54160 2017 1 26 57779 0.0439 0.2856 0.54051 2017 1 27 57780 0.0424 0.2868 0.53937 2017 1 28 57781 0.0410 0.2879 0.53813 2017 1 29 57782 0.0397 0.2891 0.53677 2017 1 30 57783 0.0383 0.2903 0.53525 2017 1 31 57784 0.0370 0.2915 0.53357 2017 2 1 57785 0.0357 0.2928 0.53178 2017 2 2 57786 0.0344 0.2940 0.52991 2017 2 3 57787 0.0331 0.2953 0.52804 2017 2 4 57788 0.0319 0.2966 0.52621 2017 2 5 57789 0.0307 0.2979 0.52448 2017 2 6 57790 0.0295 0.2993 0.52286 2017 2 7 57791 0.0283 0.3006 0.52132 2017 2 8 57792 0.0272 0.3020 0.51984 2017 2 9 57793 0.0261 0.3034 0.51834 2017 2 10 57794 0.0250 0.3048 0.51679 2017 2 11 57795 0.0240 0.3062 0.51514 2017 2 12 57796 0.0229 0.3077 0.51341 2017 2 13 57797 0.0219 0.3091 0.51161 2017 2 14 57798 0.0210 0.3106 0.50979 2017 2 15 57799 0.0200 0.3121 0.50797 2017 2 16 57800 0.0191 0.3136 0.50621 2017 2 17 57801 0.0182 0.3151 0.50451 2017 2 18 57802 0.0174 0.3166 0.50290 2017 2 19 57803 0.0165 0.3182 0.50136 2017 2 20 57804 0.0157 0.3197 0.49990 2017 2 21 57805 0.0150 0.3213 0.49848 2017 2 22 57806 0.0142 0.3229 0.49707 2017 2 23 57807 0.0135 0.3245 0.49562 2017 2 24 57808 0.0128 0.3261 0.49409 2017 2 25 57809 0.0122 0.3277 0.49242 2017 2 26 57810 0.0116 0.3293 0.49059 2017 2 27 57811 0.0110 0.3310 0.48859 2017 2 28 57812 0.0104 0.3326 0.48643 2017 3 1 57813 0.0099 0.3342 0.48418 2017 3 2 57814 0.0094 0.3359 0.48191 2017 3 3 57815 0.0089 0.3376 0.47969 2017 3 4 57816 0.0085 0.3392 0.47758 2017 3 5 57817 0.0081 0.3409 0.47560 2017 3 6 57818 0.0077 0.3426 0.47374 2017 3 7 57819 0.0074 0.3443 0.47196 2017 3 8 57820 0.0071 0.3460 0.47021 2017 3 9 57821 0.0068 0.3477 0.46842 2017 3 10 57822 0.0065 0.3494 0.46657 2017 3 11 57823 0.0063 0.3511 0.46464 2017 3 12 57824 0.0062 0.3528 0.46264 2017 3 13 57825 0.0060 0.3545 0.46062 2017 3 14 57826 0.0059 0.3562 0.45861 2017 3 15 57827 0.0058 0.3580 0.45666 2017 3 16 57828 0.0057 0.3597 0.45480 2017 3 17 57829 0.0057 0.3614 0.45304 2017 3 18 57830 0.0057 0.3631 0.45139 2017 3 19 57831 0.0058 0.3648 0.44983 2017 3 20 57832 0.0058 0.3666 0.44833 2017 3 21 57833 0.0059 0.3683 0.44684 2017 3 22 57834 0.0061 0.3700 0.44531 2017 3 23 57835 0.0062 0.3717 0.44368 2017 3 24 57836 0.0064 0.3734 0.44191 2017 3 25 57837 0.0067 0.3751 0.43995 2017 3 26 57838 0.0069 0.3768 0.43779 2017 3 27 57839 0.0072 0.3786 0.43545 2017 3 28 57840 0.0075 0.3803 0.43296 2017 3 29 57841 0.0079 0.3819 0.43041 2017 3 30 57842 0.0083 0.3836 0.42789 2017 3 31 57843 0.0087 0.3853 0.42548 2017 4 1 57844 0.0091 0.3870 0.42323 2017 4 2 57845 0.0096 0.3887 0.42112 2017 4 3 57846 0.0101 0.3903 0.41913 2017 4 4 57847 0.0107 0.3920 0.41720 2017 4 5 57848 0.0112 0.3936 0.41529 2017 4 6 57849 0.0118 0.3953 0.41334 2017 4 7 57850 0.0124 0.3969 0.41134 2017 4 8 57851 0.0131 0.3985 0.40929 2017 4 9 57852 0.0138 0.4001 0.40721 2017 4 10 57853 0.0145 0.4017 0.40515 2017 4 11 57854 0.0152 0.4033 0.40315 2017 4 12 57855 0.0160 0.4049 0.40125 2017 4 13 57856 0.0168 0.4064 0.39950 2017 4 14 57857 0.0176 0.4080 0.39789 2017 4 15 57858 0.0185 0.4095 0.39641 2017 4 16 57859 0.0194 0.4110 0.39501 2017 4 17 57860 0.0203 0.4126 0.39367 2017 4 18 57861 0.0212 0.4141 0.39233 2017 4 19 57862 0.0222 0.4155 0.39093 2017 4 20 57863 0.0232 0.4170 0.38948 2017 4 21 57864 0.0242 0.4185 0.38782 2017 4 22 57865 0.0252 0.4199 0.38604 2017 4 23 57866 0.0263 0.4213 0.38400 2017 4 24 57867 0.0274 0.4227 0.38177 2017 4 25 57868 0.0285 0.4241 0.37947 2017 4 26 57869 0.0296 0.4255 0.37721 2017 4 27 57870 0.0308 0.4268 0.37490 2017 4 28 57871 0.0320 0.4282 0.37294 2017 4 29 57872 0.0332 0.4295 0.37115 2017 4 30 57873 0.0344 0.4308 0.36953 2017 5 1 57874 0.0357 0.4321 0.36803 2017 5 2 57875 0.0370 0.4333 0.36651 2017 5 3 57876 0.0383 0.4346 0.36503 2017 5 4 57877 0.0396 0.4358 0.36351 2017 5 5 57878 0.0409 0.4370 0.36180 2017 5 6 57879 0.0423 0.4382 0.36005 2017 5 7 57880 0.0437 0.4393 0.35823 2017 5 8 57881 0.0451 0.4405 0.35639 2017 5 9 57882 0.0465 0.4416 0.35455 2017 5 10 57883 0.0480 0.4427 0.35274 2017 5 11 57884 0.0494 0.4438 0.35102 2017 5 12 57885 0.0509 0.4448 0.34945 2017 5 13 57886 0.0524 0.4459 0.34796 2017 5 14 57887 0.0539 0.4469 0.34656 2017 5 15 57888 0.0554 0.4479 0.34518 2017 5 16 57889 0.0570 0.4488 0.34380 2017 5 17 57890 0.0586 0.4497 0.34247 2017 5 18 57891 0.0601 0.4507 0.34098 2017 5 19 57892 0.0617 0.4516 0.33939 2017 5 20 57893 0.0633 0.4524 0.33753 2017 5 21 57894 0.0650 0.4533 0.33556 2017 5 22 57895 0.0666 0.4541 0.33340 2017 5 23 57896 0.0682 0.4549 0.33112 2017 5 24 57897 0.0699 0.4556 0.32889 2017 5 25 57898 0.0716 0.4564 0.32670 2017 5 26 57899 0.0733 0.4571 0.32466 2017 5 27 57900 0.0749 0.4578 0.32270 2017 5 28 57901 0.0767 0.4584 0.32087 2017 5 29 57902 0.0784 0.4591 0.31911 2017 5 30 57903 0.0801 0.4597 0.31738 2017 5 31 57904 0.0818 0.4603 0.31565 2017 6 1 57905 0.0836 0.4608 0.31394 2017 6 2 57906 0.0853 0.4614 0.31221 2017 6 3 57907 0.0871 0.4619 0.31054 2017 6 4 57908 0.0888 0.4623 0.30898 2017 6 5 57909 0.0906 0.4628 0.30754 2017 6 6 57910 0.0924 0.4632 0.30625 2017 6 7 57911 0.0942 0.4636 0.30516 2017 6 8 57912 0.0960 0.4640 0.30429 2017 6 9 57913 0.0978 0.4643 0.30345 2017 6 10 57914 0.0996 0.4646 0.30282 2017 6 11 57915 0.1014 0.4649 0.30221 2017 6 12 57916 0.1032 0.4652 0.30155 2017 6 13 57917 0.1050 0.4654 0.30089 2017 6 14 57918 0.1068 0.4656 0.30017 2017 6 15 57919 0.1086 0.4658 0.29938 2017 6 16 57920 0.1104 0.4660 0.29855 2017 6 17 57921 0.1122 0.4661 0.29759 2017 6 18 57922 0.1140 0.4662 0.29650 2017 6 19 57923 0.1158 0.4663 0.29530 2017 6 20 57924 0.1176 0.4663 0.29408 2017 6 21 57925 0.1194 0.4663 0.29289 2017 6 22 57926 0.1212 0.4663 0.29173 2017 6 23 57927 0.1230 0.4663 0.29071 2017 6 24 57928 0.1248 0.4662 0.28980 2017 6 25 57929 0.1266 0.4661 0.28891 2017 6 26 57930 0.1284 0.4660 0.28802 2017 6 27 57931 0.1302 0.4658 0.28717 2017 6 28 57932 0.1320 0.4656 0.28628 2017 6 29 57933 0.1338 0.4654 0.28540 2017 6 30 57934 0.1355 0.4652 0.28448 2017 7 1 57935 0.1373 0.4650 0.28358 2017 7 2 57936 0.1390 0.4647 0.28272 2017 7 3 57937 0.1408 0.4644 0.28201 2017 7 4 57938 0.1425 0.4640 0.28142 2017 7 5 57939 0.1442 0.4637 0.28099 2017 7 6 57940 0.1460 0.4633 0.28077 2017 7 7 57941 0.1477 0.4629 0.28072 2017 7 8 57942 0.1494 0.4624 0.28076 2017 7 9 57943 0.1510 0.4620 0.28081 2017 7 10 57944 0.1527 0.4615 0.28092 2017 7 11 57945 0.1544 0.4609 0.28097 2017 7 12 57946 0.1560 0.4604 0.28100 2017 7 13 57947 0.1577 0.4598 0.28087 2017 7 14 57948 0.1593 0.4592 0.28061 2017 7 15 57949 0.1609 0.4586 0.28019 2017 7 16 57950 0.1625 0.4580 0.27960 2017 7 17 57951 0.1641 0.4573 0.27890 2017 7 18 57952 0.1657 0.4566 0.27817 2017 7 19 57953 0.1672 0.4559 0.27750 2017 7 20 57954 0.1687 0.4552 0.27689 2017 7 21 57955 0.1703 0.4544 0.27645 2017 7 22 57956 0.1718 0.4536 0.27608 2017 7 23 57957 0.1732 0.4528 0.27573 2017 7 24 57958 0.1747 0.4520 0.27533 2017 7 25 57959 0.1762 0.4512 0.27487 2017 7 26 57960 0.1776 0.4503 0.27430 2017 7 27 57961 0.1790 0.4494 0.27367 2017 7 28 57962 0.1804 0.4485 0.27304 2017 7 29 57963 0.1818 0.4476 0.27251 2017 7 30 57964 0.1831 0.4466 0.27208 2017 7 31 57965 0.1845 0.4456 0.27173 2017 8 1 57966 0.1858 0.4446 0.27142 2017 8 2 57967 0.1871 0.4436 0.27115 2017 8 3 57968 0.1884 0.4426 0.27098 2017 8 4 57969 0.1896 0.4415 0.27083 2017 8 5 57970 0.1908 0.4405 0.27069 2017 8 6 57971 0.1920 0.4394 0.27044 2017 8 7 57972 0.1932 0.4383 0.27014 2017 8 8 57973 0.1944 0.4371 0.26974 2017 8 9 57974 0.1955 0.4360 0.26922 2017 8 10 57975 0.1966 0.4348 0.26855 2017 8 11 57976 0.1977 0.4337 0.26775 2017 8 12 57977 0.1988 0.4325 0.26688 2017 8 13 57978 0.1998 0.4313 0.26596 2017 8 14 57979 0.2008 0.4300 0.26500 2017 8 15 57980 0.2018 0.4288 0.26401 2017 8 16 57981 0.2028 0.4276 0.26306 2017 8 17 57982 0.2037 0.4263 0.26227 2017 8 18 57983 0.2047 0.4250 0.26165 2017 8 19 57984 0.2055 0.4237 0.26109 2017 8 20 57985 0.2064 0.4224 0.26038 2017 8 21 57986 0.2072 0.4211 0.25950 2017 8 22 57987 0.2081 0.4198 0.25855 2017 8 23 57988 0.2088 0.4184 0.25752 2017 8 24 57989 0.2096 0.4171 0.25648 2017 8 25 57990 0.2103 0.4157 0.25541 2017 8 26 57991 0.2110 0.4143 0.25446 2017 8 27 57992 0.2117 0.4129 0.25356 2017 8 28 57993 0.2123 0.4115 0.25276 2017 8 29 57994 0.2130 0.4101 0.25208 2017 8 30 57995 0.2136 0.4087 0.25156 2017 8 31 57996 0.2141 0.4073 0.25112 2017 9 1 57997 0.2147 0.4059 0.25070 2017 9 2 57998 0.2152 0.4044 0.25020 2017 9 3 57999 0.2156 0.4030 0.24957 2017 9 4 58000 0.2161 0.4015 0.24880 2017 9 5 58001 0.2165 0.4001 0.24785 2017 9 6 58002 0.2169 0.3986 0.24668 2017 9 7 58003 0.2173 0.3972 0.24534 2017 9 8 58004 0.2176 0.3957 0.24391 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) 57610 -104.43 0.30 -13.42 0.05 57611 -104.41 0.30 -13.39 0.05 57612 -104.54 0.30 -13.23 0.05 57613 -104.86 0.30 -13.02 0.12 57614 -105.20 0.30 -12.89 0.12 57615 -105.34 0.15 -12.95 0.14 57616 -105.28 0.17 -13.18 0.16 57617 -105.17 0.17 -13.40 0.16 57618 -105.12 0.17 -13.42 0.16 57619 -105.18 0.17 -13.22 0.16 57620 -105.34 0.17 -12.97 0.16 57621 -105.54 0.25 -12.87 0.08 57622 -105.70 0.25 -12.94 0.08 57623 -105.76 0.25 -13.05 0.08 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57610 0.168 0.119 -0.064 0.050 57611 0.169 0.119 -0.078 0.050 57612 0.172 0.119 -0.096 0.050 57613 0.169 0.119 -0.131 0.120 57614 0.161 0.119 -0.164 0.120 57615 0.167 0.060 -0.184 0.140 57616 0.180 0.068 -0.193 0.160 57617 0.188 0.068 -0.188 0.160 57618 0.195 0.068 -0.176 0.160 57619 0.198 0.068 -0.172 0.160 57620 0.198 0.068 -0.182 0.160 57621 0.202 0.099 -0.203 0.080 57622 0.208 0.099 -0.201 0.080 57623 0.208 0.099 -0.167 0.080 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).