********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 28 July 2016 Vol. XXIX No. 030 ______________________________________________________________________ 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 = -0.2 seconds beginning 19 May 2016 at 0000 UTC = -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 7 22 57591 0.19816 .00009 0.45975 .00009 -0.220579 0.000015 16 7 23 57592 0.20020 .00009 0.45863 .00009 -0.220990 0.000015 16 7 24 57593 0.20225 .00009 0.45760 .00009 -0.221470 0.000014 16 7 25 57594 0.20426 .00009 0.45669 .00009 -0.222022 0.000007 16 7 26 57595 0.20606 .00009 0.45593 .00009 -0.222616 0.000007 16 7 27 57596 0.20755 .00009 0.45510 .00009 -0.223213 0.000006 16 7 28 57597 0.20889 .00009 0.45420 .00009 -0.223790 0.000004 _______________________________________________________________________ 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 = 0.1060 + 0.0710 cos A + 0.0956 sin A + 0.0340 cos C - 0.0030 sin C y = 0.3692 + 0.0905 cos A - 0.0676 sin A - 0.0030 cos C - 0.0340 sin C UT1-UTC = -0.2316 - 0.00144 (MJD - 57605) - (UT2-UT1) where A = 2*pi*(MJD-57597)/365.25 and C = 2*pi*(MJD-57597)/435. TAI-UTC(MJD 57598) = 36.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57597)**0.80 S t = 0.00025 (MJD-57597)**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 7 29 57598 0.2102 0.4531 -0.22429 2016 7 30 57599 0.2115 0.4519 -0.22470 2016 7 31 57600 0.2129 0.4507 -0.22503 2016 8 1 57601 0.2142 0.4493 -0.22534 2016 8 2 57602 0.2156 0.4479 -0.22570 2016 8 3 57603 0.2169 0.4464 -0.22612 2016 8 4 57604 0.2182 0.4448 -0.22662 2016 8 5 57605 0.2195 0.4432 -0.22716 2016 8 6 57606 0.2208 0.4416 -0.22775 2016 8 7 57607 0.2221 0.4400 -0.22836 2016 8 8 57608 0.2233 0.4384 -0.22895 2016 8 9 57609 0.2245 0.4367 -0.22948 2016 8 10 57610 0.2257 0.4350 -0.22992 2016 8 11 57611 0.2268 0.4333 -0.23024 2016 8 12 57612 0.2280 0.4316 -0.23046 2016 8 13 57613 0.2291 0.4299 -0.23063 2016 8 14 57614 0.2302 0.4281 -0.23079 2016 8 15 57615 0.2312 0.4264 -0.23097 2016 8 16 57616 0.2322 0.4247 -0.23122 2016 8 17 57617 0.2331 0.4229 -0.23160 2016 8 18 57618 0.2340 0.4211 -0.23216 2016 8 19 57619 0.2348 0.4193 -0.23292 2016 8 20 57620 0.2357 0.4175 -0.23388 2016 8 21 57621 0.2365 0.4156 -0.23499 2016 8 22 57622 0.2372 0.4137 -0.23618 2016 8 23 57623 0.2380 0.4119 -0.23736 2016 8 24 57624 0.2387 0.4100 -0.23846 2016 8 25 57625 0.2393 0.4080 -0.23944 2016 8 26 57626 0.2400 0.4061 -0.24029 2016 8 27 57627 0.2406 0.4042 -0.24105 2016 8 28 57628 0.2411 0.4022 -0.24176 2016 8 29 57629 0.2417 0.4003 -0.24247 2016 8 30 57630 0.2421 0.3983 -0.24323 2016 8 31 57631 0.2426 0.3964 -0.24406 2016 9 1 57632 0.2430 0.3944 -0.24499 2016 9 2 57633 0.2434 0.3924 -0.24598 2016 9 3 57634 0.2438 0.3904 -0.24703 2016 9 4 57635 0.2441 0.3884 -0.24809 2016 9 5 57636 0.2444 0.3864 -0.24915 2016 9 6 57637 0.2446 0.3844 -0.25018 2016 9 7 57638 0.2448 0.3824 -0.25117 2016 9 8 57639 0.2450 0.3804 -0.25212 2016 9 9 57640 0.2451 0.3784 -0.25303 2016 9 10 57641 0.2452 0.3764 -0.25393 2016 9 11 57642 0.2453 0.3744 -0.25487 2016 9 12 57643 0.2453 0.3724 -0.25588 2016 9 13 57644 0.2453 0.3703 -0.25701 2016 9 14 57645 0.2452 0.3683 -0.25829 2016 9 15 57646 0.2451 0.3663 -0.25978 2016 9 16 57647 0.2450 0.3643 -0.26147 2016 9 17 57648 0.2449 0.3623 -0.26333 2016 9 18 57649 0.2447 0.3603 -0.26528 2016 9 19 57650 0.2444 0.3582 -0.26724 2016 9 20 57651 0.2442 0.3562 -0.26911 2016 9 21 57652 0.2439 0.3542 -0.27084 2016 9 22 57653 0.2435 0.3522 -0.27242 2016 9 23 57654 0.2431 0.3503 -0.27387 2016 9 24 57655 0.2427 0.3483 -0.27524 2016 9 25 57656 0.2423 0.3463 -0.27658 2016 9 26 57657 0.2418 0.3443 -0.27795 2016 9 27 57658 0.2413 0.3423 -0.27939 2016 9 28 57659 0.2407 0.3404 -0.28089 2016 9 29 57660 0.2401 0.3384 -0.28246 2016 9 30 57661 0.2395 0.3365 -0.28407 2016 10 1 57662 0.2388 0.3346 -0.28569 2016 10 2 57663 0.2382 0.3326 -0.28728 2016 10 3 57664 0.2374 0.3307 -0.28883 2016 10 4 57665 0.2367 0.3288 -0.29031 2016 10 5 57666 0.2359 0.3269 -0.29172 2016 10 6 57667 0.2350 0.3251 -0.29305 2016 10 7 57668 0.2342 0.3232 -0.29434 2016 10 8 57669 0.2333 0.3214 -0.29561 2016 10 9 57670 0.2323 0.3195 -0.29691 2016 10 10 57671 0.2314 0.3177 -0.29829 2016 10 11 57672 0.2304 0.3159 -0.29979 2016 10 12 57673 0.2294 0.3141 -0.30146 2016 10 13 57674 0.2283 0.3123 -0.30333 2016 10 14 57675 0.2272 0.3106 -0.30539 2016 10 15 57676 0.2261 0.3088 -0.30760 2016 10 16 57677 0.2249 0.3071 -0.30988 2016 10 17 57678 0.2238 0.3054 -0.31213 2016 10 18 57679 0.2226 0.3037 -0.31425 2016 10 19 57680 0.2213 0.3020 -0.31622 2016 10 20 57681 0.2200 0.3004 -0.31804 2016 10 21 57682 0.2187 0.2987 -0.31974 2016 10 22 57683 0.2174 0.2971 -0.32139 2016 10 23 57684 0.2161 0.2955 -0.32304 2016 10 24 57685 0.2147 0.2939 -0.32474 2016 10 25 57686 0.2133 0.2924 -0.32648 2016 10 26 57687 0.2118 0.2909 -0.32829 2016 10 27 57688 0.2103 0.2894 -0.33012 2016 10 28 57689 0.2089 0.2879 -0.33197 2016 10 29 57690 0.2073 0.2864 -0.33378 2016 10 30 57691 0.2058 0.2850 -0.33555 2016 10 31 57692 0.2042 0.2835 -0.33724 2016 11 1 57693 0.2026 0.2822 -0.33885 2016 11 2 57694 0.2010 0.2808 -0.34038 2016 11 3 57695 0.1994 0.2794 -0.34184 2016 11 4 57696 0.1977 0.2781 -0.34325 2016 11 5 57697 0.1960 0.2768 -0.34464 2016 11 6 57698 0.1943 0.2756 -0.34607 2016 11 7 57699 0.1926 0.2743 -0.34758 2016 11 8 57700 0.1908 0.2731 -0.34922 2016 11 9 57701 0.1891 0.2719 -0.35102 2016 11 10 57702 0.1873 0.2707 -0.35300 2016 11 11 57703 0.1855 0.2696 -0.35514 2016 11 12 57704 0.1836 0.2685 -0.35739 2016 11 13 57705 0.1818 0.2674 -0.35968 2016 11 14 57706 0.1799 0.2664 -0.36187 2016 11 15 57707 0.1780 0.2653 -0.36392 2016 11 16 57708 0.1761 0.2644 -0.36581 2016 11 17 57709 0.1742 0.2634 -0.36756 2016 11 18 57710 0.1723 0.2624 -0.36922 2016 11 19 57711 0.1703 0.2615 -0.37086 2016 11 20 57712 0.1683 0.2607 -0.37251 2016 11 21 57713 0.1664 0.2598 -0.37421 2016 11 22 57714 0.1644 0.2590 -0.37594 2016 11 23 57715 0.1624 0.2582 -0.37770 2016 11 24 57716 0.1603 0.2575 -0.37947 2016 11 25 57717 0.1583 0.2567 -0.38121 2016 11 26 57718 0.1563 0.2560 -0.38291 2016 11 27 57719 0.1542 0.2554 -0.38454 2016 11 28 57720 0.1521 0.2548 -0.38609 2016 11 29 57721 0.1501 0.2542 -0.38754 2016 11 30 57722 0.1480 0.2536 -0.38892 2016 12 1 57723 0.1459 0.2531 -0.39024 2016 12 2 57724 0.1438 0.2525 -0.39152 2016 12 3 57725 0.1417 0.2521 -0.39282 2016 12 4 57726 0.1396 0.2516 -0.39418 2016 12 5 57727 0.1374 0.2512 -0.39563 2016 12 6 57728 0.1353 0.2509 -0.39722 2016 12 7 57729 0.1332 0.2505 -0.39896 2016 12 8 57730 0.1310 0.2502 -0.40085 2016 12 9 57731 0.1289 0.2499 -0.40285 2016 12 10 57732 0.1268 0.2497 -0.40491 2016 12 11 57733 0.1246 0.2495 -0.40695 2016 12 12 57734 0.1225 0.2493 -0.40891 2016 12 13 57735 0.1203 0.2492 -0.41072 2016 12 14 57736 0.1182 0.2490 -0.41240 2016 12 15 57737 0.1160 0.2490 -0.41398 2016 12 16 57738 0.1139 0.2489 -0.41551 2016 12 17 57739 0.1117 0.2489 -0.41705 2016 12 18 57740 0.1096 0.2489 -0.41863 2016 12 19 57741 0.1074 0.2490 -0.42025 2016 12 20 57742 0.1053 0.2491 -0.42190 2016 12 21 57743 0.1032 0.2492 -0.42355 2016 12 22 57744 0.1010 0.2493 -0.42518 2016 12 23 57745 0.0989 0.2495 -0.42676 2016 12 24 57746 0.0968 0.2497 -0.42827 2016 12 25 57747 0.0946 0.2500 -0.42969 2016 12 26 57748 0.0925 0.2503 -0.43102 2016 12 27 57749 0.0904 0.2506 -0.43227 2016 12 28 57750 0.0883 0.2509 -0.43345 2016 12 29 57751 0.0862 0.2513 -0.43460 2016 12 30 57752 0.0841 0.2517 -0.43575 2016 12 31 57753 0.0821 0.2522 -0.43694 2017 1 1 57754 0.0800 0.2526 0.56177 2017 1 2 57755 0.0780 0.2531 0.56036 2017 1 3 57756 0.0759 0.2537 0.55881 2017 1 4 57757 0.0739 0.2543 0.55712 2017 1 5 57758 0.0719 0.2549 0.55532 2017 1 6 57759 0.0699 0.2555 0.55346 2017 1 7 57760 0.0679 0.2561 0.55160 2017 1 8 57761 0.0659 0.2568 0.54979 2017 1 9 57762 0.0639 0.2576 0.54809 2017 1 10 57763 0.0620 0.2583 0.54651 2017 1 11 57764 0.0600 0.2591 0.54503 2017 1 12 57765 0.0581 0.2599 0.54360 2017 1 13 57766 0.0562 0.2608 0.54215 2017 1 14 57767 0.0543 0.2616 0.54066 2017 1 15 57768 0.0525 0.2625 0.53910 2017 1 16 57769 0.0506 0.2635 0.53749 2017 1 17 57770 0.0488 0.2644 0.53585 2017 1 18 57771 0.0470 0.2654 0.53423 2017 1 19 57772 0.0452 0.2664 0.53265 2017 1 20 57773 0.0434 0.2675 0.53114 2017 1 21 57774 0.0417 0.2685 0.52971 2017 1 22 57775 0.0399 0.2696 0.52839 2017 1 23 57776 0.0382 0.2707 0.52716 2017 1 24 57777 0.0365 0.2719 0.52600 2017 1 25 57778 0.0349 0.2731 0.52489 2017 1 26 57779 0.0332 0.2743 0.52380 2017 1 27 57780 0.0316 0.2755 0.52268 2017 1 28 57781 0.0300 0.2767 0.52148 2017 1 29 57782 0.0284 0.2780 0.52017 2017 1 30 57783 0.0269 0.2793 0.51872 2017 1 31 57784 0.0254 0.2806 0.51714 2017 2 1 57785 0.0239 0.2820 0.51546 2017 2 2 57786 0.0224 0.2834 0.51372 2017 2 3 57787 0.0210 0.2847 0.51198 2017 2 4 57788 0.0195 0.2862 0.51031 2017 2 5 57789 0.0181 0.2876 0.50874 2017 2 6 57790 0.0168 0.2891 0.50728 2017 2 7 57791 0.0154 0.2905 0.50593 2017 2 8 57792 0.0141 0.2920 0.50463 2017 2 9 57793 0.0129 0.2936 0.50333 2017 2 10 57794 0.0116 0.2951 0.50196 2017 2 11 57795 0.0104 0.2967 0.50051 2017 2 12 57796 0.0092 0.2982 0.49894 2017 2 13 57797 0.0080 0.2998 0.49729 2017 2 14 57798 0.0069 0.3014 0.49558 2017 2 15 57799 0.0058 0.3031 0.49384 2017 2 16 57800 0.0047 0.3047 0.49210 2017 2 17 57801 0.0037 0.3064 0.49039 2017 2 18 57802 0.0027 0.3081 0.48871 2017 2 19 57803 0.0017 0.3098 0.48707 2017 2 20 57804 0.0007 0.3115 0.48544 2017 2 21 57805 -0.0002 0.3132 0.48381 2017 2 22 57806 -0.0011 0.3149 0.48216 2017 2 23 57807 -0.0019 0.3167 0.48046 2017 2 24 57808 -0.0027 0.3185 0.47865 2017 2 25 57809 -0.0035 0.3202 0.47670 2017 2 26 57810 -0.0043 0.3220 0.47454 2017 2 27 57811 -0.0050 0.3238 0.47217 2017 2 28 57812 -0.0057 0.3257 0.46961 2017 3 1 57813 -0.0063 0.3275 0.46692 2017 3 2 57814 -0.0069 0.3293 0.46418 2017 3 3 57815 -0.0075 0.3312 0.46146 2017 3 4 57816 -0.0081 0.3330 0.45881 2017 3 5 57817 -0.0086 0.3349 0.45627 2017 3 6 57818 -0.0091 0.3368 0.45385 2017 3 7 57819 -0.0095 0.3386 0.45152 2017 3 8 57820 -0.0099 0.3405 0.44925 2017 3 9 57821 -0.0103 0.3424 0.44699 2017 3 10 57822 -0.0107 0.3443 0.44468 2017 3 11 57823 -0.0110 0.3462 0.44231 2017 3 12 57824 -0.0113 0.3481 0.43994 2017 3 13 57825 -0.0115 0.3500 0.43758 2017 3 14 57826 -0.0117 0.3520 0.43527 2017 3 15 57827 -0.0119 0.3539 0.43308 2017 3 16 57828 -0.0120 0.3558 0.43105 2017 3 17 57829 -0.0121 0.3577 0.42904 2017 3 18 57830 -0.0122 0.3597 0.42724 2017 3 19 57831 -0.0122 0.3616 0.42548 2017 3 20 57832 -0.0122 0.3635 0.42372 2017 3 21 57833 -0.0122 0.3654 0.42202 2017 3 22 57834 -0.0121 0.3674 0.42031 2017 3 23 57835 -0.0120 0.3693 0.41858 2017 3 24 57836 -0.0119 0.3712 0.41682 2017 3 25 57837 -0.0117 0.3731 0.41492 2017 3 26 57838 -0.0115 0.3751 0.41284 2017 3 27 57839 -0.0112 0.3770 0.41055 2017 3 28 57840 -0.0109 0.3789 0.40813 2017 3 29 57841 -0.0106 0.3808 0.40564 2017 3 30 57842 -0.0103 0.3827 0.40309 2017 3 31 57843 -0.0099 0.3846 0.40065 2017 4 1 57844 -0.0095 0.3865 0.39834 2017 4 2 57845 -0.0090 0.3884 0.39613 2017 4 3 57846 -0.0086 0.3903 0.39403 2017 4 4 57847 -0.0080 0.3922 0.39207 2017 4 5 57848 -0.0075 0.3940 0.39014 2017 4 6 57849 -0.0069 0.3959 0.38821 2017 4 7 57850 -0.0063 0.3977 0.38618 2017 4 8 57851 -0.0056 0.3996 0.38408 2017 4 9 57852 -0.0050 0.4014 0.38191 2017 4 10 57853 -0.0042 0.4032 0.37979 2017 4 11 57854 -0.0035 0.4050 0.37772 2017 4 12 57855 -0.0027 0.4068 0.37576 2017 4 13 57856 -0.0019 0.4086 0.37399 2017 4 14 57857 -0.0011 0.4104 0.37240 2017 4 15 57858 -0.0002 0.4122 0.37096 2017 4 16 57859 0.0007 0.4139 0.36959 2017 4 17 57860 0.0016 0.4157 0.36837 2017 4 18 57861 0.0026 0.4174 0.36717 2017 4 19 57862 0.0036 0.4191 0.36605 2017 4 20 57863 0.0046 0.4208 0.36481 2017 4 21 57864 0.0057 0.4224 0.36347 2017 4 22 57865 0.0067 0.4241 0.36195 2017 4 23 57866 0.0078 0.4258 0.36017 2017 4 24 57867 0.0090 0.4274 0.35817 2017 4 25 57868 0.0101 0.4290 0.35602 2017 4 26 57869 0.0113 0.4306 0.35384 2017 4 27 57870 0.0126 0.4322 0.35169 2017 4 28 57871 0.0138 0.4337 0.34975 2017 4 29 57872 0.0151 0.4352 0.34798 2017 4 30 57873 0.0164 0.4368 0.34638 2017 5 1 57874 0.0177 0.4383 0.34489 2017 5 2 57875 0.0191 0.4397 0.34346 2017 5 3 57876 0.0204 0.4412 0.34199 2017 5 4 57877 0.0218 0.4426 0.34048 2017 5 5 57878 0.0233 0.4440 0.33893 2017 5 6 57879 0.0247 0.4454 0.33741 2017 5 7 57880 0.0262 0.4468 0.33591 2017 5 8 57881 0.0277 0.4481 0.33442 2017 5 9 57882 0.0292 0.4495 0.33295 2017 5 10 57883 0.0307 0.4508 0.33151 2017 5 11 57884 0.0323 0.4521 0.33019 2017 5 12 57885 0.0339 0.4533 0.32895 2017 5 13 57886 0.0355 0.4545 0.32782 2017 5 14 57887 0.0371 0.4557 0.32669 2017 5 15 57888 0.0387 0.4569 0.32563 2017 5 16 57889 0.0404 0.4581 0.32459 2017 5 17 57890 0.0421 0.4592 0.32353 2017 5 18 57891 0.0438 0.4603 0.32240 2017 5 19 57892 0.0455 0.4614 0.32116 2017 5 20 57893 0.0472 0.4624 0.31981 2017 5 21 57894 0.0490 0.4635 0.31832 2017 5 22 57895 0.0507 0.4645 0.31665 2017 5 23 57896 0.0525 0.4654 0.31484 2017 5 24 57897 0.0543 0.4664 0.31300 2017 5 25 57898 0.0561 0.4673 0.31133 2017 5 26 57899 0.0579 0.4682 0.30992 2017 5 27 57900 0.0598 0.4691 0.30873 2017 5 28 57901 0.0616 0.4699 0.30757 2017 5 29 57902 0.0635 0.4707 0.30640 2017 5 30 57903 0.0653 0.4715 0.30529 2017 5 31 57904 0.0672 0.4722 0.30416 2017 6 1 57905 0.0691 0.4730 0.30303 2017 6 2 57906 0.0710 0.4736 0.30185 2017 6 3 57907 0.0730 0.4743 0.30075 2017 6 4 57908 0.0749 0.4749 0.29964 2017 6 5 57909 0.0768 0.4755 0.29860 2017 6 6 57910 0.0788 0.4761 0.29768 2017 6 7 57911 0.0807 0.4767 0.29695 2017 6 8 57912 0.0827 0.4772 0.29636 2017 6 9 57913 0.0846 0.4777 0.29587 2017 6 10 57914 0.0866 0.4781 0.29542 2017 6 11 57915 0.0886 0.4785 0.29497 2017 6 12 57916 0.0906 0.4789 0.29451 2017 6 13 57917 0.0925 0.4793 0.29400 2017 6 14 57918 0.0945 0.4796 0.29338 2017 6 15 57919 0.0965 0.4799 0.29264 2017 6 16 57920 0.0985 0.4802 0.29183 2017 6 17 57921 0.1005 0.4805 0.29089 2017 6 18 57922 0.1025 0.4807 0.28980 2017 6 19 57923 0.1045 0.4809 0.28858 2017 6 20 57924 0.1065 0.4810 0.28733 2017 6 21 57925 0.1085 0.4811 0.28611 2017 6 22 57926 0.1105 0.4812 0.28507 2017 6 23 57927 0.1125 0.4813 0.28418 2017 6 24 57928 0.1145 0.4813 0.28346 2017 6 25 57929 0.1165 0.4813 0.28279 2017 6 26 57930 0.1184 0.4813 0.28208 2017 6 27 57931 0.1204 0.4812 0.28133 2017 6 28 57932 0.1224 0.4811 0.28049 2017 6 29 57933 0.1244 0.4810 0.27957 2017 6 30 57934 0.1263 0.4808 0.27869 2017 7 1 57935 0.1283 0.4807 0.27789 2017 7 2 57936 0.1303 0.4804 0.27707 2017 7 3 57937 0.1322 0.4802 0.27628 2017 7 4 57938 0.1342 0.4799 0.27558 2017 7 5 57939 0.1361 0.4796 0.27494 2017 7 6 57940 0.1380 0.4793 0.27439 2017 7 7 57941 0.1399 0.4789 0.27391 2017 7 8 57942 0.1418 0.4786 0.27351 2017 7 9 57943 0.1437 0.4781 0.27308 2017 7 10 57944 0.1456 0.4777 0.27265 2017 7 11 57945 0.1475 0.4772 0.27220 2017 7 12 57946 0.1493 0.4767 0.27168 2017 7 13 57947 0.1512 0.4762 0.27112 2017 7 14 57948 0.1530 0.4756 0.27043 2017 7 15 57949 0.1548 0.4750 0.26961 2017 7 16 57950 0.1567 0.4744 0.26868 2017 7 17 57951 0.1584 0.4738 0.26768 2017 7 18 57952 0.1602 0.4731 0.26671 2017 7 19 57953 0.1620 0.4724 0.26586 2017 7 20 57954 0.1637 0.4717 0.26510 2017 7 21 57955 0.1655 0.4709 0.26443 2017 7 22 57956 0.1672 0.4701 0.26385 2017 7 23 57957 0.1689 0.4693 0.26333 2017 7 24 57958 0.1706 0.4685 0.26278 2017 7 25 57959 0.1722 0.4676 0.26209 2017 7 26 57960 0.1739 0.4668 0.26126 2017 7 27 57961 0.1755 0.4659 0.26035 2017 7 28 57962 0.1771 0.4649 0.25941 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) 57575 -99.30 0.30 -13.06 0.15 57576 -99.13 0.30 -13.08 0.15 57577 -99.35 0.30 -13.18 0.15 57578 -99.84 0.30 -13.26 0.15 57579 -100.32 0.30 -13.28 0.15 57580 -100.61 0.30 -13.30 0.15 57581 -100.76 0.30 -13.34 0.15 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57575 0.100 0.119 -0.067 0.150 57576 0.107 0.119 -0.055 0.150 57577 0.109 0.119 -0.021 0.150 57578 0.110 0.119 0.004 0.150 57579 0.116 0.119 0.015 0.150 57580 0.121 0.119 -0.002 0.150 57581 0.120 0.119 -0.028 0.150 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).