********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 15 September 2016 Vol. XXIX No. 037 ______________________________________________________________________ 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 9 57640 0.23466 .00009 0.37573 .00009 -0.253513 0.000012 16 9 10 57641 0.23466 .00009 0.37372 .00009 -0.254194 0.000012 16 9 11 57642 0.23475 .00009 0.37176 .00009 -0.254871 0.000012 16 9 12 57643 0.23518 .00009 0.36980 .00009 -0.255608 0.000012 16 9 13 57644 0.23573 .00009 0.36787 .00009 -0.256408 0.000013 16 9 14 57645 0.23612 .00009 0.36608 .00009 -0.257263 0.000015 16 9 15 57646 0.23642 .00009 0.36442 .00009 -0.258331 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 = 0.1070 + 0.1043 cos A - 0.0068 sin A + 0.0259 cos C - 0.0033 sin C y = 0.3709 - 0.0038 cos A - 0.1012 sin A - 0.0033 cos C - 0.0259 sin C UT1-UTC = -0.2893 - 0.00140 (MJD - 57654) - (UT2-UT1) where A = 2*pi*(MJD-57646)/365.25 and C = 2*pi*(MJD-57646)/435. TAI-UTC(MJD 57647) = 36.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57646)**0.80 S t = 0.00025 (MJD-57646)**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 16 57647 0.2365 0.3628 -0.25957 2016 9 17 57648 0.2366 0.3611 -0.26095 2016 9 18 57649 0.2365 0.3592 -0.26241 2016 9 19 57650 0.2364 0.3574 -0.26388 2016 9 20 57651 0.2363 0.3556 -0.26531 2016 9 21 57652 0.2361 0.3539 -0.26662 2016 9 22 57653 0.2358 0.3522 -0.26779 2016 9 23 57654 0.2354 0.3504 -0.26883 2016 9 24 57655 0.2350 0.3487 -0.26980 2016 9 25 57656 0.2345 0.3470 -0.27075 2016 9 26 57657 0.2341 0.3452 -0.27171 2016 9 27 57658 0.2336 0.3434 -0.27274 2016 9 28 57659 0.2331 0.3416 -0.27386 2016 9 29 57660 0.2325 0.3398 -0.27508 2016 9 30 57661 0.2320 0.3380 -0.27638 2016 10 1 57662 0.2314 0.3362 -0.27772 2016 10 2 57663 0.2308 0.3345 -0.27908 2016 10 3 57664 0.2302 0.3327 -0.28040 2016 10 4 57665 0.2296 0.3310 -0.28166 2016 10 5 57666 0.2289 0.3293 -0.28284 2016 10 6 57667 0.2282 0.3276 -0.28396 2016 10 7 57668 0.2274 0.3259 -0.28505 2016 10 8 57669 0.2266 0.3242 -0.28613 2016 10 9 57670 0.2258 0.3225 -0.28724 2016 10 10 57671 0.2250 0.3209 -0.28843 2016 10 11 57672 0.2241 0.3192 -0.28974 2016 10 12 57673 0.2232 0.3176 -0.29122 2016 10 13 57674 0.2222 0.3160 -0.29289 2016 10 14 57675 0.2212 0.3144 -0.29477 2016 10 15 57676 0.2202 0.3128 -0.29680 2016 10 16 57677 0.2192 0.3113 -0.29891 2016 10 17 57678 0.2181 0.3097 -0.30101 2016 10 18 57679 0.2170 0.3082 -0.30299 2016 10 19 57680 0.2159 0.3066 -0.30482 2016 10 20 57681 0.2148 0.3051 -0.30650 2016 10 21 57682 0.2136 0.3036 -0.30806 2016 10 22 57683 0.2124 0.3022 -0.30956 2016 10 23 57684 0.2112 0.3007 -0.31106 2016 10 24 57685 0.2099 0.2993 -0.31257 2016 10 25 57686 0.2086 0.2979 -0.31413 2016 10 26 57687 0.2073 0.2965 -0.31574 2016 10 27 57688 0.2060 0.2951 -0.31738 2016 10 28 57689 0.2047 0.2937 -0.31902 2016 10 29 57690 0.2033 0.2924 -0.32064 2016 10 30 57691 0.2019 0.2911 -0.32222 2016 10 31 57692 0.2005 0.2898 -0.32373 2016 11 1 57693 0.1990 0.2885 -0.32517 2016 11 2 57694 0.1976 0.2873 -0.32653 2016 11 3 57695 0.1961 0.2861 -0.32783 2016 11 4 57696 0.1946 0.2849 -0.32910 2016 11 5 57697 0.1930 0.2837 -0.33036 2016 11 6 57698 0.1915 0.2825 -0.33167 2016 11 7 57699 0.1899 0.2814 -0.33307 2016 11 8 57700 0.1883 0.2803 -0.33459 2016 11 9 57701 0.1867 0.2792 -0.33627 2016 11 10 57702 0.1851 0.2782 -0.33812 2016 11 11 57703 0.1835 0.2771 -0.34012 2016 11 12 57704 0.1818 0.2761 -0.34223 2016 11 13 57705 0.1801 0.2752 -0.34436 2016 11 14 57706 0.1784 0.2742 -0.34643 2016 11 15 57707 0.1767 0.2733 -0.34836 2016 11 16 57708 0.1750 0.2724 -0.35014 2016 11 17 57709 0.1732 0.2715 -0.35178 2016 11 18 57710 0.1715 0.2707 -0.35334 2016 11 19 57711 0.1697 0.2698 -0.35489 2016 11 20 57712 0.1679 0.2690 -0.35646 2016 11 21 57713 0.1661 0.2683 -0.35807 2016 11 22 57714 0.1643 0.2675 -0.35974 2016 11 23 57715 0.1625 0.2668 -0.36145 2016 11 24 57716 0.1606 0.2662 -0.36317 2016 11 25 57717 0.1588 0.2655 -0.36488 2016 11 26 57718 0.1569 0.2649 -0.36655 2016 11 27 57719 0.1550 0.2643 -0.36814 2016 11 28 57720 0.1532 0.2637 -0.36966 2016 11 29 57721 0.1513 0.2632 -0.37109 2016 11 30 57722 0.1494 0.2627 -0.37243 2016 12 1 57723 0.1475 0.2622 -0.37371 2016 12 2 57724 0.1456 0.2617 -0.37496 2016 12 3 57725 0.1436 0.2613 -0.37621 2016 12 4 57726 0.1417 0.2609 -0.37751 2016 12 5 57727 0.1398 0.2606 -0.37891 2016 12 6 57728 0.1378 0.2602 -0.38044 2016 12 7 57729 0.1359 0.2599 -0.38212 2016 12 8 57730 0.1340 0.2597 -0.38393 2016 12 9 57731 0.1320 0.2594 -0.38586 2016 12 10 57732 0.1301 0.2592 -0.38783 2016 12 11 57733 0.1281 0.2590 -0.38979 2016 12 12 57734 0.1261 0.2589 -0.39165 2016 12 13 57735 0.1242 0.2587 -0.39337 2016 12 14 57736 0.1222 0.2587 -0.39495 2016 12 15 57737 0.1203 0.2586 -0.39642 2016 12 16 57738 0.1183 0.2586 -0.39785 2016 12 17 57739 0.1164 0.2586 -0.39929 2016 12 18 57740 0.1144 0.2586 -0.40076 2016 12 19 57741 0.1124 0.2587 -0.40227 2016 12 20 57742 0.1105 0.2587 -0.40381 2016 12 21 57743 0.1085 0.2589 -0.40535 2016 12 22 57744 0.1066 0.2590 -0.40688 2016 12 23 57745 0.1047 0.2592 -0.40835 2016 12 24 57746 0.1027 0.2594 -0.40976 2016 12 25 57747 0.1008 0.2596 -0.41109 2016 12 26 57748 0.0989 0.2599 -0.41232 2016 12 27 57749 0.0970 0.2602 -0.41347 2016 12 28 57750 0.0950 0.2605 -0.41456 2016 12 29 57751 0.0931 0.2609 -0.41561 2016 12 30 57752 0.0912 0.2613 -0.41667 2016 12 31 57753 0.0894 0.2617 -0.41777 2017 1 1 57754 0.0875 0.2621 0.58104 2017 1 2 57755 0.0856 0.2626 0.57977 2017 1 3 57756 0.0837 0.2631 0.57836 2017 1 4 57757 0.0819 0.2636 0.57681 2017 1 5 57758 0.0801 0.2642 0.57515 2017 1 6 57759 0.0782 0.2648 0.57342 2017 1 7 57760 0.0764 0.2654 0.57169 2017 1 8 57761 0.0746 0.2660 0.57001 2017 1 9 57762 0.0728 0.2667 0.56843 2017 1 10 57763 0.0711 0.2674 0.56697 2017 1 11 57764 0.0693 0.2681 0.56560 2017 1 12 57765 0.0676 0.2689 0.56427 2017 1 13 57766 0.0658 0.2697 0.56293 2017 1 14 57767 0.0641 0.2705 0.56154 2017 1 15 57768 0.0624 0.2713 0.56007 2017 1 16 57769 0.0607 0.2722 0.55855 2017 1 17 57770 0.0591 0.2731 0.55700 2017 1 18 57771 0.0574 0.2740 0.55546 2017 1 19 57772 0.0558 0.2749 0.55395 2017 1 20 57773 0.0542 0.2759 0.55251 2017 1 21 57774 0.0526 0.2768 0.55115 2017 1 22 57775 0.0510 0.2779 0.54988 2017 1 23 57776 0.0495 0.2789 0.54870 2017 1 24 57777 0.0480 0.2799 0.54757 2017 1 25 57778 0.0465 0.2810 0.54649 2017 1 26 57779 0.0450 0.2821 0.54540 2017 1 27 57780 0.0435 0.2833 0.54427 2017 1 28 57781 0.0421 0.2844 0.54304 2017 1 29 57782 0.0406 0.2856 0.54169 2017 1 30 57783 0.0392 0.2868 0.54017 2017 1 31 57784 0.0379 0.2880 0.53851 2017 2 1 57785 0.0365 0.2892 0.53673 2017 2 2 57786 0.0352 0.2905 0.53487 2017 2 3 57787 0.0339 0.2917 0.53301 2017 2 4 57788 0.0326 0.2930 0.53120 2017 2 5 57789 0.0313 0.2944 0.52949 2017 2 6 57790 0.0301 0.2957 0.52788 2017 2 7 57791 0.0289 0.2971 0.52637 2017 2 8 57792 0.0277 0.2984 0.52490 2017 2 9 57793 0.0266 0.2998 0.52343 2017 2 10 57794 0.0254 0.3012 0.52190 2017 2 11 57795 0.0243 0.3027 0.52028 2017 2 12 57796 0.0233 0.3041 0.51857 2017 2 13 57797 0.0222 0.3056 0.51680 2017 2 14 57798 0.0212 0.3070 0.51500 2017 2 15 57799 0.0202 0.3085 0.51322 2017 2 16 57800 0.0193 0.3100 0.51149 2017 2 17 57801 0.0183 0.3116 0.50983 2017 2 18 57802 0.0174 0.3131 0.50826 2017 2 19 57803 0.0165 0.3146 0.50677 2017 2 20 57804 0.0157 0.3162 0.50536 2017 2 21 57805 0.0149 0.3178 0.50399 2017 2 22 57806 0.0141 0.3194 0.50263 2017 2 23 57807 0.0133 0.3210 0.50123 2017 2 24 57808 0.0126 0.3226 0.49975 2017 2 25 57809 0.0119 0.3242 0.49813 2017 2 26 57810 0.0112 0.3258 0.49635 2017 2 27 57811 0.0106 0.3275 0.49439 2017 2 28 57812 0.0100 0.3291 0.49228 2017 3 1 57813 0.0094 0.3308 0.49007 2017 3 2 57814 0.0089 0.3325 0.48784 2017 3 3 57815 0.0084 0.3341 0.48565 2017 3 4 57816 0.0079 0.3358 0.48356 2017 3 5 57817 0.0075 0.3375 0.48160 2017 3 6 57818 0.0070 0.3392 0.47974 2017 3 7 57819 0.0067 0.3409 0.47796 2017 3 8 57820 0.0063 0.3427 0.47619 2017 3 9 57821 0.0060 0.3444 0.47438 2017 3 10 57822 0.0057 0.3461 0.47249 2017 3 11 57823 0.0054 0.3478 0.47051 2017 3 12 57824 0.0052 0.3496 0.46845 2017 3 13 57825 0.0050 0.3513 0.46635 2017 3 14 57826 0.0048 0.3530 0.46425 2017 3 15 57827 0.0047 0.3548 0.46219 2017 3 16 57828 0.0046 0.3565 0.46020 2017 3 17 57829 0.0046 0.3583 0.45831 2017 3 18 57830 0.0045 0.3600 0.45652 2017 3 19 57831 0.0045 0.3618 0.45484 2017 3 20 57832 0.0045 0.3635 0.45323 2017 3 21 57833 0.0046 0.3653 0.45167 2017 3 22 57834 0.0047 0.3670 0.45012 2017 3 23 57835 0.0048 0.3687 0.44852 2017 3 24 57836 0.0050 0.3705 0.44684 2017 3 25 57837 0.0052 0.3722 0.44502 2017 3 26 57838 0.0054 0.3740 0.44303 2017 3 27 57839 0.0057 0.3757 0.44089 2017 3 28 57840 0.0059 0.3774 0.43861 2017 3 29 57841 0.0063 0.3792 0.43626 2017 3 30 57842 0.0066 0.3809 0.43393 2017 3 31 57843 0.0070 0.3826 0.43167 2017 4 1 57844 0.0074 0.3843 0.42954 2017 4 2 57845 0.0078 0.3860 0.42752 2017 4 3 57846 0.0083 0.3877 0.42559 2017 4 4 57847 0.0088 0.3894 0.42369 2017 4 5 57848 0.0093 0.3911 0.42177 2017 4 6 57849 0.0099 0.3927 0.41980 2017 4 7 57850 0.0105 0.3944 0.41776 2017 4 8 57851 0.0111 0.3961 0.41565 2017 4 9 57852 0.0118 0.3977 0.41350 2017 4 10 57853 0.0125 0.3993 0.41134 2017 4 11 57854 0.0132 0.4010 0.40922 2017 4 12 57855 0.0139 0.4026 0.40715 2017 4 13 57856 0.0147 0.4042 0.40517 2017 4 14 57857 0.0155 0.4058 0.40327 2017 4 15 57858 0.0163 0.4074 0.40148 2017 4 16 57859 0.0172 0.4089 0.39978 2017 4 17 57860 0.0180 0.4105 0.39817 2017 4 18 57861 0.0190 0.4120 0.39662 2017 4 19 57862 0.0199 0.4135 0.39506 2017 4 20 57863 0.0209 0.4150 0.39342 2017 4 21 57864 0.0218 0.4165 0.39168 2017 4 22 57865 0.0229 0.4180 0.38981 2017 4 23 57866 0.0239 0.4195 0.38779 2017 4 24 57867 0.0250 0.4209 0.38565 2017 4 25 57868 0.0261 0.4224 0.38342 2017 4 26 57869 0.0272 0.4238 0.38120 2017 4 27 57870 0.0283 0.4252 0.37917 2017 4 28 57871 0.0295 0.4266 0.37728 2017 4 29 57872 0.0307 0.4279 0.37558 2017 4 30 57873 0.0319 0.4293 0.37401 2017 5 1 57874 0.0332 0.4306 0.37253 2017 5 2 57875 0.0344 0.4319 0.37107 2017 5 3 57876 0.0357 0.4332 0.36954 2017 5 4 57877 0.0370 0.4345 0.36802 2017 5 5 57878 0.0383 0.4357 0.36631 2017 5 6 57879 0.0397 0.4370 0.36464 2017 5 7 57880 0.0411 0.4382 0.36285 2017 5 8 57881 0.0424 0.4394 0.36107 2017 5 9 57882 0.0439 0.4405 0.35939 2017 5 10 57883 0.0453 0.4417 0.35787 2017 5 11 57884 0.0467 0.4428 0.35633 2017 5 12 57885 0.0482 0.4439 0.35512 2017 5 13 57886 0.0497 0.4450 0.35401 2017 5 14 57887 0.0512 0.4460 0.35301 2017 5 15 57888 0.0527 0.4471 0.35209 2017 5 16 57889 0.0543 0.4481 0.35113 2017 5 17 57890 0.0558 0.4490 0.35017 2017 5 18 57891 0.0574 0.4500 0.34914 2017 5 19 57892 0.0590 0.4509 0.34785 2017 5 20 57893 0.0606 0.4519 0.34640 2017 5 21 57894 0.0622 0.4527 0.34474 2017 5 22 57895 0.0639 0.4536 0.34291 2017 5 23 57896 0.0655 0.4545 0.34094 2017 5 24 57897 0.0672 0.4553 0.33894 2017 5 25 57898 0.0688 0.4561 0.33700 2017 5 26 57899 0.0705 0.4568 0.33525 2017 5 27 57900 0.0722 0.4576 0.33364 2017 5 28 57901 0.0739 0.4583 0.33215 2017 5 29 57902 0.0757 0.4590 0.33069 2017 5 30 57903 0.0774 0.4596 0.32922 2017 5 31 57904 0.0791 0.4602 0.32782 2017 6 1 57905 0.0809 0.4609 0.32629 2017 6 2 57906 0.0826 0.4614 0.32475 2017 6 3 57907 0.0844 0.4620 0.32309 2017 6 4 57908 0.0862 0.4625 0.32151 2017 6 5 57909 0.0880 0.4630 0.31992 2017 6 6 57910 0.0898 0.4635 0.31838 2017 6 7 57911 0.0915 0.4639 0.31697 2017 6 8 57912 0.0933 0.4643 0.31563 2017 6 9 57913 0.0952 0.4647 0.31439 2017 6 10 57914 0.0970 0.4651 0.31317 2017 6 11 57915 0.0988 0.4654 0.31202 2017 6 12 57916 0.1006 0.4657 0.31090 2017 6 13 57917 0.1024 0.4660 0.30978 2017 6 14 57918 0.1042 0.4663 0.30864 2017 6 15 57919 0.1061 0.4665 0.30746 2017 6 16 57920 0.1079 0.4667 0.30615 2017 6 17 57921 0.1097 0.4669 0.30476 2017 6 18 57922 0.1116 0.4670 0.30334 2017 6 19 57923 0.1134 0.4671 0.30188 2017 6 20 57924 0.1152 0.4672 0.30044 2017 6 21 57925 0.1170 0.4672 0.29915 2017 6 22 57926 0.1189 0.4673 0.29806 2017 6 23 57927 0.1207 0.4673 0.29703 2017 6 24 57928 0.1225 0.4673 0.29624 2017 6 25 57929 0.1243 0.4672 0.29548 2017 6 26 57930 0.1262 0.4671 0.29464 2017 6 27 57931 0.1280 0.4670 0.29379 2017 6 28 57932 0.1298 0.4669 0.29289 2017 6 29 57933 0.1316 0.4667 0.29196 2017 6 30 57934 0.1334 0.4665 0.29111 2017 7 1 57935 0.1352 0.4663 0.29029 2017 7 2 57936 0.1369 0.4661 0.28952 2017 7 3 57937 0.1387 0.4658 0.28881 2017 7 4 57938 0.1405 0.4655 0.28821 2017 7 5 57939 0.1422 0.4652 0.28771 2017 7 6 57940 0.1440 0.4648 0.28724 2017 7 7 57941 0.1457 0.4644 0.28685 2017 7 8 57942 0.1475 0.4640 0.28652 2017 7 9 57943 0.1492 0.4636 0.28615 2017 7 10 57944 0.1509 0.4631 0.28576 2017 7 11 57945 0.1526 0.4626 0.28539 2017 7 12 57946 0.1543 0.4621 0.28493 2017 7 13 57947 0.1560 0.4616 0.28441 2017 7 14 57948 0.1576 0.4610 0.28372 2017 7 15 57949 0.1593 0.4605 0.28291 2017 7 16 57950 0.1609 0.4598 0.28198 2017 7 17 57951 0.1625 0.4592 0.28107 2017 7 18 57952 0.1641 0.4585 0.28019 2017 7 19 57953 0.1657 0.4579 0.27943 2017 7 20 57954 0.1673 0.4572 0.27887 2017 7 21 57955 0.1689 0.4564 0.27850 2017 7 22 57956 0.1704 0.4557 0.27822 2017 7 23 57957 0.1719 0.4549 0.27793 2017 7 24 57958 0.1735 0.4541 0.27766 2017 7 25 57959 0.1749 0.4533 0.27731 2017 7 26 57960 0.1764 0.4524 0.27697 2017 7 27 57961 0.1779 0.4516 0.27652 2017 7 28 57962 0.1793 0.4507 0.27608 2017 7 29 57963 0.1807 0.4497 0.27564 2017 7 30 57964 0.1821 0.4488 0.27519 2017 7 31 57965 0.1835 0.4479 0.27477 2017 8 1 57966 0.1849 0.4469 0.27441 2017 8 2 57967 0.1862 0.4459 0.27414 2017 8 3 57968 0.1875 0.4449 0.27391 2017 8 4 57969 0.1888 0.4438 0.27380 2017 8 5 57970 0.1901 0.4428 0.27371 2017 8 6 57971 0.1914 0.4417 0.27362 2017 8 7 57972 0.1926 0.4406 0.27347 2017 8 8 57973 0.1938 0.4395 0.27323 2017 8 9 57974 0.1950 0.4384 0.27282 2017 8 10 57975 0.1962 0.4372 0.27226 2017 8 11 57976 0.1973 0.4361 0.27156 2017 8 12 57977 0.1984 0.4349 0.27083 2017 8 13 57978 0.1995 0.4337 0.27007 2017 8 14 57979 0.2006 0.4325 0.26929 2017 8 15 57980 0.2016 0.4313 0.26851 2017 8 16 57981 0.2026 0.4300 0.26776 2017 8 17 57982 0.2036 0.4288 0.26711 2017 8 18 57983 0.2046 0.4275 0.26648 2017 8 19 57984 0.2056 0.4262 0.26586 2017 8 20 57985 0.2065 0.4249 0.26509 2017 8 21 57986 0.2074 0.4236 0.26424 2017 8 22 57987 0.2082 0.4222 0.26328 2017 8 23 57988 0.2091 0.4209 0.26224 2017 8 24 57989 0.2099 0.4196 0.26116 2017 8 25 57990 0.2106 0.4182 0.26008 2017 8 26 57991 0.2114 0.4168 0.25909 2017 8 27 57992 0.2121 0.4154 0.25818 2017 8 28 57993 0.2128 0.4140 0.25733 2017 8 29 57994 0.2135 0.4126 0.25649 2017 8 30 57995 0.2141 0.4112 0.25569 2017 8 31 57996 0.2148 0.4098 0.25503 2017 9 1 57997 0.2153 0.4084 0.25449 2017 9 2 57998 0.2159 0.4069 0.25398 2017 9 3 57999 0.2164 0.4055 0.25332 2017 9 4 58000 0.2169 0.4040 0.25247 2017 9 5 58001 0.2174 0.4025 0.25154 2017 9 6 58002 0.2179 0.4011 0.25045 2017 9 7 58003 0.2183 0.3996 0.24924 2017 9 8 58004 0.2187 0.3981 0.24788 2017 9 9 58005 0.2190 0.3966 0.24651 2017 9 10 58006 0.2194 0.3951 0.24509 2017 9 11 58007 0.2197 0.3936 0.24374 2017 9 12 58008 0.2199 0.3921 0.24250 2017 9 13 58009 0.2202 0.3906 0.24144 2017 9 14 58010 0.2204 0.3891 0.24048 2017 9 15 58011 0.2206 0.3876 0.23954 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) 57624 -105.92 0.30 -13.08 0.05 57625 -105.94 0.30 -13.10 0.05 57626 -106.05 0.30 -13.16 0.05 57627 -106.22 0.30 -13.28 0.15 57628 -106.29 0.30 -13.41 0.03 57629 -106.13 0.30 -13.49 0.03 57630 -105.78 0.30 -13.44 0.03 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57624 0.131 0.119 -0.111 0.050 57625 0.123 0.119 -0.109 0.050 57626 0.135 0.119 -0.123 0.050 57627 0.160 0.119 -0.128 0.150 57628 0.180 0.119 -0.125 0.030 57629 0.187 0.119 -0.143 0.030 57630 0.184 0.119 -0.145 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).