********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 14 July 2016 Vol. XXIX No. 028 ______________________________________________________________________ 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 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 8 57577 0.16648 .00009 0.47630 .00009 -0.216920 0.000013 16 7 9 57578 0.16876 .00009 0.47509 .00009 -0.217519 0.000013 16 7 10 57579 0.17139 .00009 0.47369 .00009 -0.218152 0.000017 16 7 11 57580 0.17414 .00009 0.47233 .00009 -0.218697 0.000016 16 7 12 57581 0.17682 .00009 0.47117 .00009 -0.219152 0.000015 16 7 13 57582 0.17918 .00009 0.47020 .00009 -0.219626 0.000015 16 7 14 57583 0.18113 .00009 0.46926 .00009 -0.219986 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 = 0.1017 + 0.0459 cos A + 0.1158 sin A + 0.0369 cos C - 0.0009 sin C y = 0.3636 + 0.1088 cos A - 0.0437 sin A - 0.0009 cos C - 0.0369 sin C UT1-UTC = -0.2162 - 0.00146 (MJD - 57591) - (UT2-UT1) where A = 2*pi*(MJD-57583)/365.25 and C = 2*pi*(MJD-57583)/435. TAI-UTC(MJD 57584) = 36.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57583)**0.80 S t = 0.00025 (MJD-57583)**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 15 57584 0.1829 0.4682 -0.22012 2016 7 16 57585 0.1846 0.4672 -0.22015 2016 7 17 57586 0.1863 0.4662 -0.22011 2016 7 18 57587 0.1880 0.4650 -0.22004 2016 7 19 57588 0.1897 0.4638 -0.21997 2016 7 20 57589 0.1914 0.4625 -0.21997 2016 7 21 57590 0.1932 0.4613 -0.22010 2016 7 22 57591 0.1949 0.4600 -0.22038 2016 7 23 57592 0.1965 0.4588 -0.22081 2016 7 24 57593 0.1981 0.4574 -0.22136 2016 7 25 57594 0.1996 0.4561 -0.22199 2016 7 26 57595 0.2011 0.4547 -0.22265 2016 7 27 57596 0.2026 0.4533 -0.22333 2016 7 28 57597 0.2041 0.4519 -0.22394 2016 7 29 57598 0.2056 0.4504 -0.22448 2016 7 30 57599 0.2071 0.4489 -0.22492 2016 7 31 57600 0.2086 0.4474 -0.22532 2016 8 1 57601 0.2101 0.4459 -0.22572 2016 8 2 57602 0.2115 0.4444 -0.22617 2016 8 3 57603 0.2128 0.4429 -0.22669 2016 8 4 57604 0.2141 0.4414 -0.22728 2016 8 5 57605 0.2153 0.4398 -0.22793 2016 8 6 57606 0.2166 0.4382 -0.22860 2016 8 7 57607 0.2178 0.4366 -0.22926 2016 8 8 57608 0.2189 0.4350 -0.22990 2016 8 9 57609 0.2201 0.4334 -0.23048 2016 8 10 57610 0.2212 0.4317 -0.23100 2016 8 11 57611 0.2223 0.4300 -0.23146 2016 8 12 57612 0.2233 0.4284 -0.23186 2016 8 13 57613 0.2244 0.4266 -0.23222 2016 8 14 57614 0.2253 0.4249 -0.23258 2016 8 15 57615 0.2263 0.4232 -0.23298 2016 8 16 57616 0.2272 0.4214 -0.23346 2016 8 17 57617 0.2281 0.4196 -0.23409 2016 8 18 57618 0.2290 0.4179 -0.23489 2016 8 19 57619 0.2298 0.4161 -0.23590 2016 8 20 57620 0.2306 0.4143 -0.23710 2016 8 21 57621 0.2313 0.4124 -0.23845 2016 8 22 57622 0.2321 0.4106 -0.23986 2016 8 23 57623 0.2327 0.4088 -0.24126 2016 8 24 57624 0.2334 0.4069 -0.24257 2016 8 25 57625 0.2340 0.4051 -0.24376 2016 8 26 57626 0.2346 0.4032 -0.24483 2016 8 27 57627 0.2351 0.4013 -0.24581 2016 8 28 57628 0.2357 0.3994 -0.24673 2016 8 29 57629 0.2361 0.3975 -0.24766 2016 8 30 57630 0.2366 0.3956 -0.24865 2016 8 31 57631 0.2370 0.3937 -0.24971 2016 9 1 57632 0.2374 0.3918 -0.25084 2016 9 2 57633 0.2377 0.3899 -0.25203 2016 9 3 57634 0.2380 0.3879 -0.25325 2016 9 4 57635 0.2383 0.3860 -0.25446 2016 9 5 57636 0.2385 0.3841 -0.25564 2016 9 6 57637 0.2387 0.3821 -0.25677 2016 9 7 57638 0.2389 0.3802 -0.25783 2016 9 8 57639 0.2390 0.3782 -0.25882 2016 9 9 57640 0.2391 0.3763 -0.25975 2016 9 10 57641 0.2391 0.3743 -0.26065 2016 9 11 57642 0.2392 0.3724 -0.26155 2016 9 12 57643 0.2391 0.3704 -0.26249 2016 9 13 57644 0.2391 0.3685 -0.26354 2016 9 14 57645 0.2390 0.3665 -0.26474 2016 9 15 57646 0.2389 0.3646 -0.26612 2016 9 16 57647 0.2387 0.3626 -0.26769 2016 9 17 57648 0.2385 0.3607 -0.26944 2016 9 18 57649 0.2383 0.3587 -0.27130 2016 9 19 57650 0.2380 0.3568 -0.27316 2016 9 20 57651 0.2377 0.3548 -0.27496 2016 9 21 57652 0.2374 0.3529 -0.27661 2016 9 22 57653 0.2370 0.3510 -0.27813 2016 9 23 57654 0.2366 0.3491 -0.27952 2016 9 24 57655 0.2362 0.3472 -0.28085 2016 9 25 57656 0.2357 0.3452 -0.28217 2016 9 26 57657 0.2352 0.3433 -0.28352 2016 9 27 57658 0.2347 0.3414 -0.28494 2016 9 28 57659 0.2341 0.3396 -0.28644 2016 9 29 57660 0.2335 0.3377 -0.28801 2016 9 30 57661 0.2328 0.3358 -0.28964 2016 10 1 57662 0.2321 0.3340 -0.29128 2016 10 2 57663 0.2314 0.3321 -0.29291 2016 10 3 57664 0.2307 0.3303 -0.29449 2016 10 4 57665 0.2299 0.3284 -0.29601 2016 10 5 57666 0.2291 0.3266 -0.29747 2016 10 6 57667 0.2283 0.3248 -0.29885 2016 10 7 57668 0.2274 0.3230 -0.30018 2016 10 8 57669 0.2265 0.3213 -0.30149 2016 10 9 57670 0.2255 0.3195 -0.30281 2016 10 10 57671 0.2246 0.3178 -0.30421 2016 10 11 57672 0.2236 0.3160 -0.30573 2016 10 12 57673 0.2225 0.3143 -0.30741 2016 10 13 57674 0.2215 0.3126 -0.30929 2016 10 14 57675 0.2204 0.3109 -0.31136 2016 10 15 57676 0.2192 0.3092 -0.31357 2016 10 16 57677 0.2181 0.3076 -0.31584 2016 10 17 57678 0.2169 0.3060 -0.31808 2016 10 18 57679 0.2157 0.3043 -0.32020 2016 10 19 57680 0.2144 0.3027 -0.32215 2016 10 20 57681 0.2132 0.3012 -0.32396 2016 10 21 57682 0.2119 0.2996 -0.32566 2016 10 22 57683 0.2106 0.2981 -0.32730 2016 10 23 57684 0.2092 0.2965 -0.32896 2016 10 24 57685 0.2078 0.2950 -0.33066 2016 10 25 57686 0.2064 0.2936 -0.33241 2016 10 26 57687 0.2050 0.2921 -0.33423 2016 10 27 57688 0.2035 0.2907 -0.33610 2016 10 28 57689 0.2021 0.2893 -0.33799 2016 10 29 57690 0.2006 0.2879 -0.33986 2016 10 30 57691 0.1990 0.2865 -0.34170 2016 10 31 57692 0.1975 0.2852 -0.34343 2016 11 1 57693 0.1959 0.2838 -0.34509 2016 11 2 57694 0.1943 0.2825 -0.34666 2016 11 3 57695 0.1927 0.2813 -0.34816 2016 11 4 57696 0.1910 0.2800 -0.34963 2016 11 5 57697 0.1894 0.2788 -0.35108 2016 11 6 57698 0.1877 0.2776 -0.35257 2016 11 7 57699 0.1860 0.2764 -0.35415 2016 11 8 57700 0.1842 0.2753 -0.35586 2016 11 9 57701 0.1825 0.2742 -0.35773 2016 11 10 57702 0.1807 0.2731 -0.35977 2016 11 11 57703 0.1789 0.2720 -0.36198 2016 11 12 57704 0.1771 0.2710 -0.36429 2016 11 13 57705 0.1753 0.2700 -0.36663 2016 11 14 57706 0.1735 0.2690 -0.36890 2016 11 15 57707 0.1716 0.2680 -0.37103 2016 11 16 57708 0.1697 0.2671 -0.37299 2016 11 17 57709 0.1679 0.2662 -0.37482 2016 11 18 57710 0.1660 0.2653 -0.37655 2016 11 19 57711 0.1640 0.2645 -0.37826 2016 11 20 57712 0.1621 0.2637 -0.37997 2016 11 21 57713 0.1602 0.2629 -0.38173 2016 11 22 57714 0.1582 0.2621 -0.38352 2016 11 23 57715 0.1562 0.2614 -0.38533 2016 11 24 57716 0.1543 0.2607 -0.38715 2016 11 25 57717 0.1523 0.2601 -0.38894 2016 11 26 57718 0.1503 0.2594 -0.39068 2016 11 27 57719 0.1483 0.2588 -0.39235 2016 11 28 57720 0.1462 0.2583 -0.39393 2016 11 29 57721 0.1442 0.2577 -0.39542 2016 11 30 57722 0.1422 0.2572 -0.39682 2016 12 1 57723 0.1401 0.2568 -0.39817 2016 12 2 57724 0.1381 0.2563 -0.39948 2016 12 3 57725 0.1360 0.2559 -0.40080 2016 12 4 57726 0.1340 0.2555 -0.40218 2016 12 5 57727 0.1319 0.2552 -0.40366 2016 12 6 57728 0.1298 0.2549 -0.40527 2016 12 7 57729 0.1277 0.2546 -0.40703 2016 12 8 57730 0.1257 0.2543 -0.40894 2016 12 9 57731 0.1236 0.2541 -0.41095 2016 12 10 57732 0.1215 0.2539 -0.41303 2016 12 11 57733 0.1194 0.2538 -0.41508 2016 12 12 57734 0.1173 0.2536 -0.41705 2016 12 13 57735 0.1152 0.2535 -0.41887 2016 12 14 57736 0.1131 0.2535 -0.42055 2016 12 15 57737 0.1110 0.2534 -0.42213 2016 12 16 57738 0.1089 0.2534 -0.42366 2016 12 17 57739 0.1069 0.2535 -0.42520 2016 12 18 57740 0.1048 0.2536 -0.42678 2016 12 19 57741 0.1027 0.2536 -0.42840 2016 12 20 57742 0.1006 0.2538 -0.43004 2016 12 21 57743 0.0985 0.2539 -0.43169 2016 12 22 57744 0.0965 0.2541 -0.43331 2016 12 23 57745 0.0944 0.2544 -0.43487 2016 12 24 57746 0.0923 0.2546 -0.43636 2016 12 25 57747 0.0903 0.2549 -0.43777 2016 12 26 57748 0.0882 0.2552 -0.43907 2016 12 27 57749 0.0862 0.2556 -0.44029 2016 12 28 57750 0.0842 0.2560 -0.44144 2016 12 29 57751 0.0821 0.2564 -0.44255 2016 12 30 57752 0.0801 0.2568 -0.44365 2016 12 31 57753 0.0781 0.2573 -0.44480 2017 1 1 57754 0.0761 0.2578 0.55397 2017 1 2 57755 0.0742 0.2584 0.55262 2017 1 3 57756 0.0722 0.2589 0.55113 2017 1 4 57757 0.0702 0.2595 0.54950 2017 1 5 57758 0.0683 0.2602 0.54777 2017 1 6 57759 0.0663 0.2608 0.54598 2017 1 7 57760 0.0644 0.2615 0.54419 2017 1 8 57761 0.0625 0.2622 0.54245 2017 1 9 57762 0.0606 0.2630 0.54082 2017 1 10 57763 0.0588 0.2638 0.53931 2017 1 11 57764 0.0569 0.2646 0.53789 2017 1 12 57765 0.0551 0.2654 0.53652 2017 1 13 57766 0.0532 0.2663 0.53514 2017 1 14 57767 0.0514 0.2672 0.53371 2017 1 15 57768 0.0496 0.2681 0.53221 2017 1 16 57769 0.0479 0.2691 0.53065 2017 1 17 57770 0.0461 0.2700 0.52907 2017 1 18 57771 0.0444 0.2710 0.52749 2017 1 19 57772 0.0427 0.2721 0.52595 2017 1 20 57773 0.0410 0.2731 0.52448 2017 1 21 57774 0.0393 0.2742 0.52309 2017 1 22 57775 0.0376 0.2753 0.52181 2017 1 23 57776 0.0360 0.2764 0.52061 2017 1 24 57777 0.0344 0.2776 0.51949 2017 1 25 57778 0.0328 0.2788 0.51839 2017 1 26 57779 0.0312 0.2800 0.51728 2017 1 27 57780 0.0297 0.2812 0.51609 2017 1 28 57781 0.0282 0.2825 0.51476 2017 1 29 57782 0.0267 0.2838 0.51325 2017 1 30 57783 0.0252 0.2851 0.51152 2017 1 31 57784 0.0238 0.2864 0.50957 2017 2 1 57785 0.0224 0.2877 0.50744 2017 2 2 57786 0.0210 0.2891 0.50519 2017 2 3 57787 0.0196 0.2905 0.50289 2017 2 4 57788 0.0183 0.2919 0.50060 2017 2 5 57789 0.0170 0.2934 0.49837 2017 2 6 57790 0.0157 0.2948 0.49622 2017 2 7 57791 0.0144 0.2963 0.49415 2017 2 8 57792 0.0132 0.2978 0.49212 2017 2 9 57793 0.0120 0.2993 0.49010 2017 2 10 57794 0.0108 0.3008 0.48805 2017 2 11 57795 0.0097 0.3024 0.48596 2017 2 12 57796 0.0086 0.3039 0.48384 2017 2 13 57797 0.0075 0.3055 0.48172 2017 2 14 57798 0.0064 0.3071 0.47964 2017 2 15 57799 0.0054 0.3087 0.47765 2017 2 16 57800 0.0044 0.3104 0.47576 2017 2 17 57801 0.0034 0.3120 0.47398 2017 2 18 57802 0.0025 0.3137 0.47232 2017 2 19 57803 0.0016 0.3154 0.47074 2017 2 20 57804 0.0007 0.3171 0.46919 2017 2 21 57805 -0.0001 0.3188 0.46768 2017 2 22 57806 -0.0009 0.3205 0.46620 2017 2 23 57807 -0.0017 0.3222 0.46471 2017 2 24 57808 -0.0024 0.3240 0.46321 2017 2 25 57809 -0.0032 0.3257 0.46160 2017 2 26 57810 -0.0038 0.3275 0.45980 2017 2 27 57811 -0.0045 0.3293 0.45781 2017 2 28 57812 -0.0051 0.3311 0.45567 2017 3 1 57813 -0.0057 0.3328 0.45342 2017 3 2 57814 -0.0062 0.3347 0.45107 2017 3 3 57815 -0.0067 0.3365 0.44876 2017 3 4 57816 -0.0072 0.3383 0.44656 2017 3 5 57817 -0.0077 0.3401 0.44441 2017 3 6 57818 -0.0081 0.3420 0.44239 2017 3 7 57819 -0.0084 0.3438 0.44052 2017 3 8 57820 -0.0088 0.3457 0.43869 2017 3 9 57821 -0.0091 0.3475 0.43689 2017 3 10 57822 -0.0094 0.3494 0.43497 2017 3 11 57823 -0.0096 0.3512 0.43296 2017 3 12 57824 -0.0098 0.3531 0.43084 2017 3 13 57825 -0.0100 0.3550 0.42873 2017 3 14 57826 -0.0101 0.3569 0.42664 2017 3 15 57827 -0.0102 0.3587 0.42464 2017 3 16 57828 -0.0103 0.3606 0.42280 2017 3 17 57829 -0.0104 0.3625 0.42112 2017 3 18 57830 -0.0104 0.3644 0.41958 2017 3 19 57831 -0.0103 0.3663 0.41811 2017 3 20 57832 -0.0103 0.3681 0.41678 2017 3 21 57833 -0.0102 0.3700 0.41550 2017 3 22 57834 -0.0100 0.3719 0.41430 2017 3 23 57835 -0.0099 0.3738 0.41300 2017 3 24 57836 -0.0097 0.3757 0.41161 2017 3 25 57837 -0.0094 0.3775 0.41003 2017 3 26 57838 -0.0092 0.3794 0.40819 2017 3 27 57839 -0.0089 0.3813 0.40612 2017 3 28 57840 -0.0085 0.3831 0.40385 2017 3 29 57841 -0.0082 0.3850 0.40152 2017 3 30 57842 -0.0078 0.3868 0.39917 2017 3 31 57843 -0.0073 0.3887 0.39700 2017 4 1 57844 -0.0069 0.3905 0.39498 2017 4 2 57845 -0.0064 0.3924 0.39312 2017 4 3 57846 -0.0058 0.3942 0.39139 2017 4 4 57847 -0.0053 0.3960 0.38974 2017 4 5 57848 -0.0047 0.3978 0.38806 2017 4 6 57849 -0.0040 0.3996 0.38635 2017 4 7 57850 -0.0034 0.4014 0.38456 2017 4 8 57851 -0.0027 0.4032 0.38277 2017 4 9 57852 -0.0019 0.4049 0.38096 2017 4 10 57853 -0.0012 0.4067 0.37911 2017 4 11 57854 -0.0004 0.4084 0.37724 2017 4 12 57855 0.0004 0.4102 0.37538 2017 4 13 57856 0.0013 0.4119 0.37361 2017 4 14 57857 0.0022 0.4136 0.37192 2017 4 15 57858 0.0031 0.4153 0.37032 2017 4 16 57859 0.0040 0.4170 0.36874 2017 4 17 57860 0.0050 0.4187 0.36724 2017 4 18 57861 0.0060 0.4203 0.36577 2017 4 19 57862 0.0070 0.4219 0.36431 2017 4 20 57863 0.0081 0.4236 0.36278 2017 4 21 57864 0.0091 0.4252 0.36115 2017 4 22 57865 0.0103 0.4268 0.35940 2017 4 23 57866 0.0114 0.4283 0.35748 2017 4 24 57867 0.0126 0.4299 0.35536 2017 4 25 57868 0.0137 0.4314 0.35305 2017 4 26 57869 0.0150 0.4329 0.35068 2017 4 27 57870 0.0162 0.4345 0.34846 2017 4 28 57871 0.0175 0.4359 0.34647 2017 4 29 57872 0.0188 0.4374 0.34472 2017 4 30 57873 0.0201 0.4388 0.34303 2017 5 1 57874 0.0215 0.4403 0.34135 2017 5 2 57875 0.0228 0.4417 0.33978 2017 5 3 57876 0.0242 0.4430 0.33820 2017 5 4 57877 0.0256 0.4444 0.33663 2017 5 5 57878 0.0271 0.4457 0.33498 2017 5 6 57879 0.0285 0.4471 0.33337 2017 5 7 57880 0.0300 0.4484 0.33171 2017 5 8 57881 0.0315 0.4496 0.33010 2017 5 9 57882 0.0331 0.4509 0.32857 2017 5 10 57883 0.0346 0.4521 0.32721 2017 5 11 57884 0.0362 0.4533 0.32598 2017 5 12 57885 0.0378 0.4545 0.32487 2017 5 13 57886 0.0394 0.4556 0.32380 2017 5 14 57887 0.0410 0.4568 0.32276 2017 5 15 57888 0.0427 0.4579 0.32174 2017 5 16 57889 0.0443 0.4589 0.32070 2017 5 17 57890 0.0460 0.4600 0.31957 2017 5 18 57891 0.0477 0.4610 0.31835 2017 5 19 57892 0.0494 0.4620 0.31706 2017 5 20 57893 0.0511 0.4630 0.31563 2017 5 21 57894 0.0529 0.4639 0.31403 2017 5 22 57895 0.0546 0.4649 0.31225 2017 5 23 57896 0.0564 0.4658 0.31041 2017 5 24 57897 0.0582 0.4666 0.30857 2017 5 25 57898 0.0600 0.4675 0.30691 2017 5 26 57899 0.0618 0.4683 0.30540 2017 5 27 57900 0.0637 0.4691 0.30410 2017 5 28 57901 0.0655 0.4698 0.30290 2017 5 29 57902 0.0673 0.4705 0.30172 2017 5 30 57903 0.0692 0.4712 0.30055 2017 5 31 57904 0.0711 0.4719 0.29931 2017 6 1 57905 0.0730 0.4726 0.29800 2017 6 2 57906 0.0749 0.4732 0.29672 2017 6 3 57907 0.0768 0.4738 0.29550 2017 6 4 57908 0.0787 0.4743 0.29423 2017 6 5 57909 0.0806 0.4748 0.29297 2017 6 6 57910 0.0825 0.4753 0.29178 2017 6 7 57911 0.0844 0.4758 0.29066 2017 6 8 57912 0.0864 0.4762 0.28965 2017 6 9 57913 0.0883 0.4767 0.28872 2017 6 10 57914 0.0902 0.4770 0.28790 2017 6 11 57915 0.0922 0.4774 0.28710 2017 6 12 57916 0.0941 0.4777 0.28635 2017 6 13 57917 0.0961 0.4780 0.28561 2017 6 14 57918 0.0981 0.4782 0.28484 2017 6 15 57919 0.1000 0.4785 0.28406 2017 6 16 57920 0.1020 0.4787 0.28316 2017 6 17 57921 0.1039 0.4788 0.28212 2017 6 18 57922 0.1059 0.4790 0.28094 2017 6 19 57923 0.1079 0.4791 0.27964 2017 6 20 57924 0.1098 0.4792 0.27834 2017 6 21 57925 0.1118 0.4792 0.27713 2017 6 22 57926 0.1137 0.4792 0.27603 2017 6 23 57927 0.1157 0.4792 0.27505 2017 6 24 57928 0.1176 0.4792 0.27421 2017 6 25 57929 0.1196 0.4791 0.27350 2017 6 26 57930 0.1215 0.4790 0.27282 2017 6 27 57931 0.1235 0.4789 0.27205 2017 6 28 57932 0.1254 0.4787 0.27117 2017 6 29 57933 0.1273 0.4785 0.27022 2017 6 30 57934 0.1292 0.4783 0.26923 2017 7 1 57935 0.1312 0.4781 0.26822 2017 7 2 57936 0.1331 0.4778 0.26733 2017 7 3 57937 0.1350 0.4775 0.26651 2017 7 4 57938 0.1369 0.4771 0.26582 2017 7 5 57939 0.1387 0.4768 0.26523 2017 7 6 57940 0.1406 0.4764 0.26472 2017 7 7 57941 0.1425 0.4760 0.26433 2017 7 8 57942 0.1443 0.4755 0.26401 2017 7 9 57943 0.1462 0.4750 0.26366 2017 7 10 57944 0.1480 0.4745 0.26337 2017 7 11 57945 0.1498 0.4740 0.26301 2017 7 12 57946 0.1516 0.4734 0.26256 2017 7 13 57947 0.1534 0.4728 0.26201 2017 7 14 57948 0.1552 0.4722 0.26133 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) 57561 -97.00 0.18 -13.15 0.02 57562 -97.19 0.18 -13.18 0.02 57563 -97.54 0.18 -13.18 0.02 57564 -97.80 0.30 -13.18 0.15 57565 -97.79 0.15 -13.12 0.15 57566 -97.60 0.15 -12.98 0.15 57567 -97.53 0.15 -12.76 0.15 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57561 0.214 0.072 0.001 0.020 57562 0.196 0.072 -0.003 0.020 57563 0.167 0.072 -0.011 0.020 57564 0.144 0.119 -0.051 0.150 57565 0.129 0.060 -0.084 0.150 57566 0.111 0.060 -0.120 0.150 57567 0.088 0.060 -0.145 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).