********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 18 April 2019 Vol. XXXII No. 016 ______________________________________________________________________ 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 = -0.1 seconds beginning 17 Jan 2019 at 0000 UTC = -0.2 seconds beginning 02 May 2019 at 0000 UTC Beginning 1 January 2017: TAI-UTC = 37.000 000 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 be available by 20:00 UTC. * * * * Questions and enquiries can be emailed to the following address: * * usn.ncr.navobsydc.mbx.eopcp@mail.mil * * * * 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 19 4 12 58585 0.05385 .00009 0.39618 .00009 -0.131444 0.000013 19 4 13 58586 0.05459 .00009 0.39728 .00009 -0.132215 0.000013 19 4 14 58587 0.05503 .00009 0.39823 .00009 -0.133051 0.000013 19 4 15 58588 0.05530 .00009 0.39908 .00009 -0.134035 0.000015 19 4 16 58589 0.05586 .00009 0.39992 .00009 -0.135226 0.000018 19 4 17 58590 0.05674 .00009 0.40060 .00009 -0.136583 0.000018 19 4 18 58591 0.05778 .00009 0.40113 .00009 -0.138049 0.000017 _______________________________________________________________________ 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 = 0.1156 - 0.0561 cos A + 0.0765 sin A - 0.0054 cos C - 0.0257 sin C y = 0.3496 + 0.0700 cos A + 0.0500 sin A - 0.0257 cos C + 0.0054 sin C UT1-UTC = -0.1083 - 0.00065 (MJD - 58599) - (UT2-UT1) where A = 2*pi*(MJD-58591)/365.25 and C = 2*pi*(MJD-58591)/435. TAI-UTC(MJD 58592) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58591)**0.80 S t = 0.00025 (MJD-58591)**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) 2019 4 19 58592 0.0589 0.4018 -0.13952 2019 4 20 58593 0.0601 0.4025 -0.14085 2019 4 21 58594 0.0612 0.4034 -0.14196 2019 4 22 58595 0.0623 0.4043 -0.14283 2019 4 23 58596 0.0634 0.4052 -0.14353 2019 4 24 58597 0.0645 0.4061 -0.14411 2019 4 25 58598 0.0657 0.4070 -0.14465 2019 4 26 58599 0.0668 0.4078 -0.14517 2019 4 27 58600 0.0680 0.4086 -0.14569 2019 4 28 58601 0.0693 0.4095 -0.14621 2019 4 29 58602 0.0705 0.4103 -0.14676 2019 4 30 58603 0.0718 0.4111 -0.14741 2019 5 1 58604 0.0731 0.4119 -0.14817 2019 5 2 58605 0.0743 0.4127 -0.14902 2019 5 3 58606 0.0756 0.4135 -0.14993 2019 5 4 58607 0.0769 0.4143 -0.15085 2019 5 5 58608 0.0782 0.4150 -0.15175 2019 5 6 58609 0.0795 0.4157 -0.15255 2019 5 7 58610 0.0809 0.4164 -0.15324 2019 5 8 58611 0.0823 0.4171 -0.15380 2019 5 9 58612 0.0836 0.4177 -0.15428 2019 5 10 58613 0.0850 0.4184 -0.15475 2019 5 11 58614 0.0864 0.4190 -0.15526 2019 5 12 58615 0.0878 0.4196 -0.15590 2019 5 13 58616 0.0892 0.4202 -0.15671 2019 5 14 58617 0.0906 0.4207 -0.15768 2019 5 15 58618 0.0921 0.4212 -0.15876 2019 5 16 58619 0.0935 0.4217 -0.15987 2019 5 17 58620 0.0950 0.4222 -0.16092 2019 5 18 58621 0.0964 0.4227 -0.16180 2019 5 19 58622 0.0979 0.4231 -0.16247 2019 5 20 58623 0.0994 0.4235 -0.16292 2019 5 21 58624 0.1009 0.4239 -0.16316 2019 5 22 58625 0.1023 0.4242 -0.16327 2019 5 23 58626 0.1038 0.4246 -0.16329 2019 5 24 58627 0.1054 0.4249 -0.16330 2019 5 25 58628 0.1069 0.4252 -0.16334 2019 5 26 58629 0.1084 0.4254 -0.16345 2019 5 27 58630 0.1099 0.4257 -0.16366 2019 5 28 58631 0.1114 0.4259 -0.16397 2019 5 29 58632 0.1130 0.4261 -0.16437 2019 5 30 58633 0.1145 0.4262 -0.16484 2019 5 31 58634 0.1161 0.4264 -0.16535 2019 6 1 58635 0.1176 0.4265 -0.16583 2019 6 2 58636 0.1191 0.4266 -0.16624 2019 6 3 58637 0.1207 0.4266 -0.16654 2019 6 4 58638 0.1223 0.4267 -0.16670 2019 6 5 58639 0.1238 0.4267 -0.16677 2019 6 6 58640 0.1254 0.4267 -0.16679 2019 6 7 58641 0.1269 0.4266 -0.16686 2019 6 8 58642 0.1285 0.4266 -0.16704 2019 6 9 58643 0.1300 0.4265 -0.16737 2019 6 10 58644 0.1316 0.4264 -0.16788 2019 6 11 58645 0.1331 0.4262 -0.16850 2019 6 12 58646 0.1347 0.4261 -0.16918 2019 6 13 58647 0.1362 0.4259 -0.16981 2019 6 14 58648 0.1377 0.4257 -0.17033 2019 6 15 58649 0.1393 0.4254 -0.17067 2019 6 16 58650 0.1408 0.4252 -0.17080 2019 6 17 58651 0.1423 0.4249 -0.17074 2019 6 18 58652 0.1438 0.4246 -0.17053 2019 6 19 58653 0.1454 0.4242 -0.17023 2019 6 20 58654 0.1469 0.4239 -0.16989 2019 6 21 58655 0.1484 0.4235 -0.16959 2019 6 22 58656 0.1499 0.4231 -0.16935 2019 6 23 58657 0.1514 0.4227 -0.16921 2019 6 24 58658 0.1528 0.4222 -0.16916 2019 6 25 58659 0.1543 0.4217 -0.16921 2019 6 26 58660 0.1558 0.4212 -0.16931 2019 6 27 58661 0.1572 0.4207 -0.16945 2019 6 28 58662 0.1587 0.4202 -0.16957 2019 6 29 58663 0.1601 0.4196 -0.16963 2019 6 30 58664 0.1615 0.4190 -0.16959 2019 7 1 58665 0.1629 0.4184 -0.16943 2019 7 2 58666 0.1643 0.4177 -0.16916 2019 7 3 58667 0.1657 0.4171 -0.16882 2019 7 4 58668 0.1671 0.4164 -0.16851 2019 7 5 58669 0.1684 0.4157 -0.16829 2019 7 6 58670 0.1698 0.4150 -0.16824 2019 7 7 58671 0.1711 0.4142 -0.16837 2019 7 8 58672 0.1724 0.4134 -0.16863 2019 7 9 58673 0.1737 0.4127 -0.16895 2019 7 10 58674 0.1750 0.4118 -0.16924 2019 7 11 58675 0.1763 0.4110 -0.16943 2019 7 12 58676 0.1775 0.4102 -0.16945 2019 7 13 58677 0.1788 0.4093 -0.16928 2019 7 14 58678 0.1800 0.4084 -0.16895 2019 7 15 58679 0.1812 0.4075 -0.16847 2019 7 16 58680 0.1824 0.4066 -0.16791 2019 7 17 58681 0.1835 0.4056 -0.16732 2019 7 18 58682 0.1847 0.4046 -0.16675 2019 7 19 58683 0.1858 0.4036 -0.16626 2019 7 20 58684 0.1869 0.4026 -0.16586 2019 7 21 58685 0.1880 0.4016 -0.16556 2019 7 22 58686 0.1891 0.4006 -0.16537 2019 7 23 58687 0.1901 0.3995 -0.16526 2019 7 24 58688 0.1912 0.3984 -0.16520 2019 7 25 58689 0.1922 0.3974 -0.16515 2019 7 26 58690 0.1932 0.3962 -0.16508 2019 7 27 58691 0.1941 0.3951 -0.16495 2019 7 28 58692 0.1951 0.3940 -0.16473 2019 7 29 58693 0.1960 0.3928 -0.16441 2019 7 30 58694 0.1969 0.3917 -0.16402 2019 7 31 58695 0.1978 0.3905 -0.16364 2019 8 1 58696 0.1986 0.3893 -0.16335 2019 8 2 58697 0.1995 0.3881 -0.16325 2019 8 3 58698 0.2003 0.3868 -0.16337 2019 8 4 58699 0.2010 0.3856 -0.16369 2019 8 5 58700 0.2018 0.3844 -0.16409 2019 8 6 58701 0.2025 0.3831 -0.16450 2019 8 7 58702 0.2032 0.3818 -0.16481 2019 8 8 58703 0.2039 0.3805 -0.16495 2019 8 9 58704 0.2046 0.3792 -0.16490 2019 8 10 58705 0.2052 0.3779 -0.16467 2019 8 11 58706 0.2058 0.3766 -0.16431 2019 8 12 58707 0.2064 0.3753 -0.16385 2019 8 13 58708 0.2070 0.3739 -0.16338 2019 8 14 58709 0.2075 0.3726 -0.16293 2019 8 15 58710 0.2080 0.3712 -0.16256 2019 8 16 58711 0.2085 0.3699 -0.16230 2019 8 17 58712 0.2089 0.3685 -0.16216 2019 8 18 58713 0.2094 0.3671 -0.16214 2019 8 19 58714 0.2097 0.3658 -0.16222 2019 8 20 58715 0.2101 0.3644 -0.16237 2019 8 21 58716 0.2105 0.3630 -0.16255 2019 8 22 58717 0.2108 0.3616 -0.16272 2019 8 23 58718 0.2111 0.3602 -0.16284 2019 8 24 58719 0.2113 0.3587 -0.16289 2019 8 25 58720 0.2116 0.3573 -0.16287 2019 8 26 58721 0.2118 0.3559 -0.16278 2019 8 27 58722 0.2119 0.3545 -0.16268 2019 8 28 58723 0.2121 0.3531 -0.16266 2019 8 29 58724 0.2122 0.3516 -0.16281 2019 8 30 58725 0.2123 0.3502 -0.16321 2019 8 31 58726 0.2123 0.3488 -0.16385 2019 9 1 58727 0.2124 0.3473 -0.16469 2019 9 2 58728 0.2124 0.3459 -0.16561 2019 9 3 58729 0.2124 0.3445 -0.16647 2019 9 4 58730 0.2123 0.3430 -0.16718 2019 9 5 58731 0.2122 0.3416 -0.16768 2019 9 6 58732 0.2121 0.3402 -0.16797 2019 9 7 58733 0.2120 0.3387 -0.16810 2019 9 8 58734 0.2118 0.3373 -0.16812 2019 9 9 58735 0.2116 0.3359 -0.16810 2019 9 10 58736 0.2114 0.3344 -0.16811 2019 9 11 58737 0.2112 0.3330 -0.16818 2019 9 12 58738 0.2109 0.3316 -0.16837 2019 9 13 58739 0.2106 0.3302 -0.16867 2019 9 14 58740 0.2103 0.3288 -0.16911 2019 9 15 58741 0.2099 0.3274 -0.16966 2019 9 16 58742 0.2095 0.3260 -0.17029 2019 9 17 58743 0.2091 0.3246 -0.17095 2019 9 18 58744 0.2087 0.3232 -0.17161 2019 9 19 58745 0.2082 0.3218 -0.17222 2019 9 20 58746 0.2077 0.3205 -0.17276 2019 9 21 58747 0.2072 0.3191 -0.17321 2019 9 22 58748 0.2066 0.3178 -0.17360 2019 9 23 58749 0.2060 0.3164 -0.17396 2019 9 24 58750 0.2054 0.3151 -0.17436 2019 9 25 58751 0.2048 0.3137 -0.17489 2019 9 26 58752 0.2041 0.3124 -0.17565 2019 9 27 58753 0.2034 0.3111 -0.17667 2019 9 28 58754 0.2027 0.3098 -0.17793 2019 9 29 58755 0.2020 0.3085 -0.17936 2019 9 30 58756 0.2012 0.3073 -0.18081 2019 10 1 58757 0.2004 0.3060 -0.18215 2019 10 2 58758 0.1996 0.3048 -0.18330 2019 10 3 58759 0.1988 0.3035 -0.18421 2019 10 4 58760 0.1979 0.3023 -0.18492 2019 10 5 58761 0.1970 0.3011 -0.18548 2019 10 6 58762 0.1961 0.2999 -0.18597 2019 10 7 58763 0.1952 0.2987 -0.18644 2019 10 8 58764 0.1942 0.2976 -0.18697 2019 10 9 58765 0.1932 0.2964 -0.18760 2019 10 10 58766 0.1922 0.2953 -0.18834 2019 10 11 58767 0.1912 0.2942 -0.18920 2019 10 12 58768 0.1902 0.2931 -0.19018 2019 10 13 58769 0.1891 0.2920 -0.19123 2019 10 14 58770 0.1880 0.2909 -0.19233 2019 10 15 58771 0.1869 0.2899 -0.19343 2019 10 16 58772 0.1857 0.2888 -0.19447 2019 10 17 58773 0.1846 0.2878 -0.19542 2019 10 18 58774 0.1834 0.2868 -0.19626 2019 10 19 58775 0.1822 0.2858 -0.19701 2019 10 20 58776 0.1810 0.2849 -0.19769 2019 10 21 58777 0.1797 0.2839 -0.19838 2019 10 22 58778 0.1785 0.2830 -0.19914 2019 10 23 58779 0.1772 0.2821 -0.20007 2019 10 24 58780 0.1759 0.2812 -0.20123 2019 10 25 58781 0.1746 0.2804 -0.20264 2019 10 26 58782 0.1733 0.2795 -0.20425 2019 10 27 58783 0.1719 0.2787 -0.20596 2019 10 28 58784 0.1705 0.2779 -0.20763 2019 10 29 58785 0.1692 0.2771 -0.20914 2019 10 30 58786 0.1678 0.2764 -0.21041 2019 10 31 58787 0.1664 0.2757 -0.21143 2019 11 1 58788 0.1649 0.2750 -0.21223 2019 11 2 58789 0.1635 0.2743 -0.21288 2019 11 3 58790 0.1620 0.2736 -0.21345 2019 11 4 58791 0.1606 0.2730 -0.21403 2019 11 5 58792 0.1591 0.2724 -0.21466 2019 11 6 58793 0.1576 0.2718 -0.21538 2019 11 7 58794 0.1561 0.2712 -0.21621 2019 11 8 58795 0.1545 0.2707 -0.21714 2019 11 9 58796 0.1530 0.2701 -0.21815 2019 11 10 58797 0.1515 0.2696 -0.21922 2019 11 11 58798 0.1499 0.2692 -0.22030 2019 11 12 58799 0.1483 0.2687 -0.22136 2019 11 13 58800 0.1468 0.2683 -0.22234 2019 11 14 58801 0.1452 0.2679 -0.22322 2019 11 15 58802 0.1436 0.2675 -0.22398 2019 11 16 58803 0.1420 0.2672 -0.22465 2019 11 17 58804 0.1404 0.2669 -0.22527 2019 11 18 58805 0.1388 0.2666 -0.22593 2019 11 19 58806 0.1371 0.2663 -0.22671 2019 11 20 58807 0.1355 0.2661 -0.22766 2019 11 21 58808 0.1339 0.2658 -0.22882 2019 11 22 58809 0.1322 0.2657 -0.23014 2019 11 23 58810 0.1306 0.2655 -0.23157 2019 11 24 58811 0.1289 0.2654 -0.23298 2019 11 25 58812 0.1273 0.2652 -0.23428 2019 11 26 58813 0.1256 0.2652 -0.23539 2019 11 27 58814 0.1240 0.2651 -0.23623 2019 11 28 58815 0.1223 0.2651 -0.23682 2019 11 29 58816 0.1206 0.2651 -0.23726 2019 11 30 58817 0.1190 0.2651 -0.23760 2019 12 1 58818 0.1173 0.2651 -0.23787 2019 12 2 58819 0.1157 0.2652 -0.23822 2019 12 3 58820 0.1140 0.2653 -0.23866 2019 12 4 58821 0.1123 0.2654 -0.23918 2019 12 5 58822 0.1107 0.2656 -0.23983 2019 12 6 58823 0.1090 0.2658 -0.24059 2019 12 7 58824 0.1073 0.2660 -0.24144 2019 12 8 58825 0.1057 0.2662 -0.24235 2019 12 9 58826 0.1040 0.2665 -0.24326 2019 12 10 58827 0.1024 0.2667 -0.24409 2019 12 11 58828 0.1007 0.2671 -0.24477 2019 12 12 58829 0.0991 0.2674 -0.24526 2019 12 13 58830 0.0975 0.2678 -0.24563 2019 12 14 58831 0.0958 0.2682 -0.24594 2019 12 15 58832 0.0942 0.2686 -0.24625 2019 12 16 58833 0.0926 0.2690 -0.24664 2019 12 17 58834 0.0910 0.2695 -0.24720 2019 12 18 58835 0.0894 0.2700 -0.24797 2019 12 19 58836 0.0878 0.2705 -0.24895 2019 12 20 58837 0.0862 0.2710 -0.25009 2019 12 21 58838 0.0847 0.2716 -0.25124 2019 12 22 58839 0.0831 0.2722 -0.25230 2019 12 23 58840 0.0815 0.2728 -0.25329 2019 12 24 58841 0.0800 0.2735 -0.25414 2019 12 25 58842 0.0785 0.2741 -0.25476 2019 12 26 58843 0.0770 0.2748 -0.25514 2019 12 27 58844 0.0755 0.2756 -0.25546 2019 12 28 58845 0.0740 0.2763 -0.25585 2019 12 29 58846 0.0725 0.2771 -0.25628 2019 12 30 58847 0.0710 0.2779 -0.25679 2019 12 31 58848 0.0696 0.2787 -0.25741 2020 1 1 58849 0.0681 0.2795 -0.25811 2020 1 2 58850 0.0667 0.2804 -0.25889 2020 1 3 58851 0.0653 0.2813 -0.25976 2020 1 4 58852 0.0639 0.2822 -0.26066 2020 1 5 58853 0.0626 0.2831 -0.26156 2020 1 6 58854 0.0612 0.2841 -0.26240 2020 1 7 58855 0.0599 0.2850 -0.26320 2020 1 8 58856 0.0585 0.2860 -0.26396 2020 1 9 58857 0.0572 0.2870 -0.26463 2020 1 10 58858 0.0560 0.2881 -0.26520 2020 1 11 58859 0.0547 0.2891 -0.26574 2020 1 12 58860 0.0534 0.2902 -0.26635 2020 1 13 58861 0.0522 0.2913 -0.26712 2020 1 14 58862 0.0510 0.2924 -0.26812 2020 1 15 58863 0.0498 0.2936 -0.26930 2020 1 16 58864 0.0487 0.2947 -0.27064 2020 1 17 58865 0.0475 0.2959 -0.27205 2020 1 18 58866 0.0464 0.2971 -0.27342 2020 1 19 58867 0.0453 0.2983 -0.27464 2020 1 20 58868 0.0442 0.2995 -0.27566 2020 1 21 58869 0.0432 0.3008 -0.27649 2020 1 22 58870 0.0422 0.3020 -0.27723 2020 1 23 58871 0.0412 0.3033 -0.27792 2020 1 24 58872 0.0402 0.3046 -0.27864 2020 1 25 58873 0.0392 0.3059 -0.27940 2020 1 26 58874 0.0383 0.3073 -0.28020 2020 1 27 58875 0.0374 0.3086 -0.28108 2020 1 28 58876 0.0365 0.3100 -0.28204 2020 1 29 58877 0.0357 0.3113 -0.28305 2020 1 30 58878 0.0348 0.3127 -0.28415 2020 1 31 58879 0.0340 0.3141 -0.28531 2020 2 1 58880 0.0332 0.3155 -0.28650 2020 2 2 58881 0.0325 0.3170 -0.28766 2020 2 3 58882 0.0318 0.3184 -0.28871 2020 2 4 58883 0.0311 0.3199 -0.28963 2020 2 5 58884 0.0304 0.3213 -0.29039 2020 2 6 58885 0.0298 0.3228 -0.29105 2020 2 7 58886 0.0291 0.3243 -0.29170 2020 2 8 58887 0.0286 0.3258 -0.29244 2020 2 9 58888 0.0280 0.3273 -0.29339 2020 2 10 58889 0.0275 0.3288 -0.29456 2020 2 11 58890 0.0270 0.3303 -0.29590 2020 2 12 58891 0.0265 0.3318 -0.29736 2020 2 13 58892 0.0261 0.3334 -0.29883 2020 2 14 58893 0.0256 0.3349 -0.30019 2020 2 15 58894 0.0253 0.3365 -0.30136 2020 2 16 58895 0.0249 0.3380 -0.30223 2020 2 17 58896 0.0246 0.3396 -0.30288 2020 2 18 58897 0.0243 0.3412 -0.30333 2020 2 19 58898 0.0240 0.3428 -0.30369 2020 2 20 58899 0.0238 0.3443 -0.30402 2020 2 21 58900 0.0236 0.3459 -0.30441 2020 2 22 58901 0.0234 0.3475 -0.30490 2020 2 23 58902 0.0233 0.3491 -0.30539 2020 2 24 58903 0.0232 0.3507 -0.30598 2020 2 25 58904 0.0231 0.3523 -0.30673 2020 2 26 58905 0.0230 0.3539 -0.30757 2020 2 27 58906 0.0230 0.3555 -0.30853 2020 2 28 58907 0.0230 0.3571 -0.30955 2020 2 29 58908 0.0230 0.3587 -0.31061 2020 3 1 58909 0.0231 0.3603 -0.31166 2020 3 2 58910 0.0232 0.3619 -0.31266 2020 3 3 58911 0.0233 0.3635 -0.31355 2020 3 4 58912 0.0235 0.3651 -0.31436 2020 3 5 58913 0.0237 0.3667 -0.31517 2020 3 6 58914 0.0239 0.3683 -0.31604 2020 3 7 58915 0.0242 0.3699 -0.31709 2020 3 8 58916 0.0245 0.3715 -0.31841 2020 3 9 58917 0.0248 0.3730 -0.32001 2020 3 10 58918 0.0251 0.3746 -0.32189 2020 3 11 58919 0.0255 0.3762 -0.32397 2020 3 12 58920 0.0259 0.3778 -0.32611 2020 3 13 58921 0.0263 0.3793 -0.32807 2020 3 14 58922 0.0268 0.3809 -0.32982 2020 3 15 58923 0.0273 0.3824 -0.33135 2020 3 16 58924 0.0278 0.3840 -0.33264 2020 3 17 58925 0.0284 0.3855 -0.33382 2020 3 18 58926 0.0290 0.3870 -0.33491 2020 3 19 58927 0.0296 0.3886 -0.33600 2020 3 20 58928 0.0302 0.3901 -0.33711 2020 3 21 58929 0.0309 0.3916 -0.33831 2020 3 22 58930 0.0316 0.3930 -0.33956 2020 3 23 58931 0.0324 0.3945 -0.34089 2020 3 24 58932 0.0331 0.3960 -0.34236 2020 3 25 58933 0.0339 0.3974 -0.34392 2020 3 26 58934 0.0347 0.3989 -0.34545 2020 3 27 58935 0.0356 0.4003 -0.34688 2020 3 28 58936 0.0365 0.4017 -0.34823 2020 3 29 58937 0.0374 0.4031 -0.34948 2020 3 30 58938 0.0383 0.4045 -0.35056 2020 3 31 58939 0.0392 0.4059 -0.35146 2020 4 1 58940 0.0402 0.4073 -0.35226 2020 4 2 58941 0.0412 0.4086 -0.35306 2020 4 3 58942 0.0423 0.4099 -0.35389 2020 4 4 58943 0.0433 0.4112 -0.35490 2020 4 5 58944 0.0444 0.4125 -0.35610 2020 4 6 58945 0.0455 0.4138 -0.35758 2020 4 7 58946 0.0467 0.4151 -0.35932 2020 4 8 58947 0.0478 0.4163 -0.36117 2020 4 9 58948 0.0490 0.4176 -0.36301 2020 4 10 58949 0.0503 0.4188 -0.36465 2020 4 11 58950 0.0515 0.4200 -0.36605 2020 4 12 58951 0.0527 0.4211 -0.36724 2020 4 13 58952 0.0540 0.4223 -0.36823 2020 4 14 58953 0.0553 0.4234 -0.36909 2020 4 15 58954 0.0567 0.4245 -0.36993 2020 4 16 58955 0.0580 0.4256 -0.37083 2020 4 17 58956 0.0594 0.4267 -0.37180 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) 58569 -105.17 0.40 -10.63 0.19 58570 -105.38 0.40 -10.92 0.19 58571 -105.52 0.40 -11.00 0.19 58572 -105.28 0.36 -10.93 0.23 58573 -104.72 0.36 -10.80 0.23 58574 -104.17 0.36 -10.65 0.23 58575 -103.92 0.36 -10.46 0.22 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58569 0.188 0.160 -0.191 0.185 58570 0.169 0.160 -0.200 0.185 58571 0.151 0.160 -0.213 0.185 58572 0.137 0.143 -0.224 0.228 58573 0.128 0.143 -0.232 0.227 58574 0.121 0.143 -0.237 0.227 58575 0.117 0.142 -0.240 0.218 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).