********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 2 May 2019 Vol. XXXII No. 018 ______________________________________________________________________ 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 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 26 58599 0.06452 .00009 0.40877 .00009 -0.145011 0.000011 19 4 27 58600 0.06574 .00009 0.40919 .00009 -0.145558 0.000011 19 4 28 58601 0.06712 .00009 0.40955 .00009 -0.146167 0.000010 19 4 29 58602 0.06861 .00009 0.41003 .00009 -0.146836 0.000007 19 4 30 58603 0.07028 .00009 0.41066 .00009 -0.147626 0.000007 19 5 1 58604 0.07219 .00009 0.41137 .00009 -0.148548 0.000005 19 5 2 58605 0.07417 .00009 0.41214 .00009 -0.149561 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 = 0.1188 - 0.0348 cos A + 0.0831 sin A - 0.0150 cos C - 0.0214 sin C y = 0.3533 + 0.0754 cos A + 0.0291 sin A - 0.0214 cos C + 0.0150 sin C UT1-UTC = -0.1138 - 0.00065 (MJD - 58613) - (UT2-UT1) where A = 2*pi*(MJD-58605)/365.25 and C = 2*pi*(MJD-58605)/435. TAI-UTC(MJD 58606) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58605)**0.80 S t = 0.00025 (MJD-58605)**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 5 3 58606 0.0760 0.4130 -0.15058 2019 5 4 58607 0.0777 0.4138 -0.15156 2019 5 5 58608 0.0792 0.4145 -0.15243 2019 5 6 58609 0.0808 0.4153 -0.15320 2019 5 7 58610 0.0823 0.4160 -0.15387 2019 5 8 58611 0.0837 0.4167 -0.15443 2019 5 9 58612 0.0852 0.4173 -0.15489 2019 5 10 58613 0.0867 0.4180 -0.15532 2019 5 11 58614 0.0883 0.4187 -0.15580 2019 5 12 58615 0.0898 0.4193 -0.15641 2019 5 13 58616 0.0912 0.4199 -0.15717 2019 5 14 58617 0.0927 0.4204 -0.15809 2019 5 15 58618 0.0942 0.4209 -0.15916 2019 5 16 58619 0.0957 0.4214 -0.16027 2019 5 17 58620 0.0971 0.4219 -0.16132 2019 5 18 58621 0.0986 0.4223 -0.16221 2019 5 19 58622 0.1001 0.4228 -0.16287 2019 5 20 58623 0.1015 0.4232 -0.16328 2019 5 21 58624 0.1029 0.4235 -0.16348 2019 5 22 58625 0.1043 0.4238 -0.16354 2019 5 23 58626 0.1058 0.4241 -0.16352 2019 5 24 58627 0.1072 0.4243 -0.16349 2019 5 25 58628 0.1087 0.4245 -0.16350 2019 5 26 58629 0.1102 0.4247 -0.16360 2019 5 27 58630 0.1117 0.4249 -0.16381 2019 5 28 58631 0.1132 0.4251 -0.16412 2019 5 29 58632 0.1147 0.4253 -0.16452 2019 5 30 58633 0.1162 0.4255 -0.16498 2019 5 31 58634 0.1177 0.4256 -0.16546 2019 6 1 58635 0.1192 0.4257 -0.16591 2019 6 2 58636 0.1206 0.4257 -0.16627 2019 6 3 58637 0.1221 0.4258 -0.16650 2019 6 4 58638 0.1236 0.4258 -0.16659 2019 6 5 58639 0.1251 0.4258 -0.16656 2019 6 6 58640 0.1266 0.4258 -0.16648 2019 6 7 58641 0.1281 0.4257 -0.16643 2019 6 8 58642 0.1296 0.4256 -0.16649 2019 6 9 58643 0.1311 0.4255 -0.16669 2019 6 10 58644 0.1326 0.4254 -0.16704 2019 6 11 58645 0.1341 0.4252 -0.16750 2019 6 12 58646 0.1356 0.4251 -0.16799 2019 6 13 58647 0.1371 0.4249 -0.16844 2019 6 14 58648 0.1386 0.4246 -0.16876 2019 6 15 58649 0.1401 0.4244 -0.16889 2019 6 16 58650 0.1416 0.4241 -0.16883 2019 6 17 58651 0.1430 0.4238 -0.16857 2019 6 18 58652 0.1445 0.4235 -0.16818 2019 6 19 58653 0.1460 0.4231 -0.16771 2019 6 20 58654 0.1474 0.4227 -0.16722 2019 6 21 58655 0.1489 0.4223 -0.16676 2019 6 22 58656 0.1503 0.4219 -0.16639 2019 6 23 58657 0.1518 0.4215 -0.16612 2019 6 24 58658 0.1532 0.4210 -0.16597 2019 6 25 58659 0.1546 0.4205 -0.16592 2019 6 26 58660 0.1560 0.4200 -0.16594 2019 6 27 58661 0.1574 0.4195 -0.16601 2019 6 28 58662 0.1588 0.4189 -0.16607 2019 6 29 58663 0.1602 0.4183 -0.16609 2019 6 30 58664 0.1616 0.4177 -0.16602 2019 7 1 58665 0.1629 0.4171 -0.16583 2019 7 2 58666 0.1643 0.4164 -0.16555 2019 7 3 58667 0.1656 0.4157 -0.16520 2019 7 4 58668 0.1669 0.4150 -0.16488 2019 7 5 58669 0.1682 0.4143 -0.16467 2019 7 6 58670 0.1695 0.4136 -0.16464 2019 7 7 58671 0.1708 0.4128 -0.16478 2019 7 8 58672 0.1721 0.4121 -0.16505 2019 7 9 58673 0.1733 0.4113 -0.16538 2019 7 10 58674 0.1745 0.4104 -0.16568 2019 7 11 58675 0.1758 0.4096 -0.16586 2019 7 12 58676 0.1770 0.4087 -0.16588 2019 7 13 58677 0.1781 0.4079 -0.16571 2019 7 14 58678 0.1793 0.4070 -0.16537 2019 7 15 58679 0.1805 0.4060 -0.16489 2019 7 16 58680 0.1816 0.4051 -0.16432 2019 7 17 58681 0.1827 0.4042 -0.16371 2019 7 18 58682 0.1838 0.4032 -0.16312 2019 7 19 58683 0.1849 0.4022 -0.16260 2019 7 20 58684 0.1859 0.4012 -0.16218 2019 7 21 58685 0.1870 0.4002 -0.16186 2019 7 22 58686 0.1880 0.3991 -0.16166 2019 7 23 58687 0.1890 0.3981 -0.16153 2019 7 24 58688 0.1899 0.3970 -0.16146 2019 7 25 58689 0.1909 0.3959 -0.16140 2019 7 26 58690 0.1918 0.3948 -0.16132 2019 7 27 58691 0.1927 0.3937 -0.16117 2019 7 28 58692 0.1936 0.3925 -0.16092 2019 7 29 58693 0.1945 0.3914 -0.16058 2019 7 30 58694 0.1954 0.3902 -0.16019 2019 7 31 58695 0.1962 0.3891 -0.15980 2019 8 1 58696 0.1970 0.3879 -0.15951 2019 8 2 58697 0.1978 0.3867 -0.15942 2019 8 3 58698 0.1985 0.3854 -0.15955 2019 8 4 58699 0.1992 0.3842 -0.15988 2019 8 5 58700 0.1999 0.3830 -0.16033 2019 8 6 58701 0.2006 0.3817 -0.16078 2019 8 7 58702 0.2013 0.3804 -0.16113 2019 8 8 58703 0.2019 0.3792 -0.16132 2019 8 9 58704 0.2025 0.3779 -0.16131 2019 8 10 58705 0.2031 0.3766 -0.16112 2019 8 11 58706 0.2037 0.3753 -0.16078 2019 8 12 58707 0.2042 0.3740 -0.16036 2019 8 13 58708 0.2047 0.3726 -0.15991 2019 8 14 58709 0.2052 0.3713 -0.15948 2019 8 15 58710 0.2056 0.3700 -0.15913 2019 8 16 58711 0.2061 0.3686 -0.15889 2019 8 17 58712 0.2065 0.3673 -0.15876 2019 8 18 58713 0.2068 0.3659 -0.15876 2019 8 19 58714 0.2072 0.3645 -0.15883 2019 8 20 58715 0.2075 0.3632 -0.15896 2019 8 21 58716 0.2078 0.3618 -0.15912 2019 8 22 58717 0.2081 0.3604 -0.15927 2019 8 23 58718 0.2083 0.3590 -0.15938 2019 8 24 58719 0.2085 0.3576 -0.15941 2019 8 25 58720 0.2087 0.3562 -0.15937 2019 8 26 58721 0.2089 0.3548 -0.15926 2019 8 27 58722 0.2090 0.3534 -0.15915 2019 8 28 58723 0.2091 0.3520 -0.15912 2019 8 29 58724 0.2092 0.3506 -0.15925 2019 8 30 58725 0.2092 0.3492 -0.15964 2019 8 31 58726 0.2092 0.3478 -0.16027 2019 9 1 58727 0.2092 0.3464 -0.16110 2019 9 2 58728 0.2092 0.3450 -0.16200 2019 9 3 58729 0.2091 0.3436 -0.16285 2019 9 4 58730 0.2090 0.3422 -0.16355 2019 9 5 58731 0.2089 0.3407 -0.16404 2019 9 6 58732 0.2088 0.3393 -0.16433 2019 9 7 58733 0.2086 0.3379 -0.16445 2019 9 8 58734 0.2084 0.3365 -0.16447 2019 9 9 58735 0.2082 0.3351 -0.16445 2019 9 10 58736 0.2079 0.3337 -0.16445 2019 9 11 58737 0.2076 0.3323 -0.16453 2019 9 12 58738 0.2073 0.3309 -0.16471 2019 9 13 58739 0.2070 0.3296 -0.16502 2019 9 14 58740 0.2066 0.3282 -0.16546 2019 9 15 58741 0.2062 0.3268 -0.16600 2019 9 16 58742 0.2058 0.3254 -0.16663 2019 9 17 58743 0.2054 0.3241 -0.16729 2019 9 18 58744 0.2049 0.3227 -0.16795 2019 9 19 58745 0.2044 0.3214 -0.16856 2019 9 20 58746 0.2039 0.3200 -0.16908 2019 9 21 58747 0.2033 0.3187 -0.16953 2019 9 22 58748 0.2027 0.3174 -0.16990 2019 9 23 58749 0.2021 0.3161 -0.17024 2019 9 24 58750 0.2015 0.3148 -0.17063 2019 9 25 58751 0.2008 0.3135 -0.17114 2019 9 26 58752 0.2001 0.3122 -0.17188 2019 9 27 58753 0.1994 0.3109 -0.17287 2019 9 28 58754 0.1987 0.3097 -0.17411 2019 9 29 58755 0.1979 0.3084 -0.17551 2019 9 30 58756 0.1971 0.3072 -0.17694 2019 10 1 58757 0.1963 0.3059 -0.17825 2019 10 2 58758 0.1955 0.3047 -0.17936 2019 10 3 58759 0.1946 0.3035 -0.18024 2019 10 4 58760 0.1938 0.3023 -0.18091 2019 10 5 58761 0.1929 0.3012 -0.18143 2019 10 6 58762 0.1919 0.3000 -0.18188 2019 10 7 58763 0.1910 0.2989 -0.18231 2019 10 8 58764 0.1900 0.2977 -0.18280 2019 10 9 58765 0.1890 0.2966 -0.18338 2019 10 10 58766 0.1880 0.2955 -0.18408 2019 10 11 58767 0.1869 0.2944 -0.18489 2019 10 12 58768 0.1859 0.2934 -0.18582 2019 10 13 58769 0.1848 0.2923 -0.18683 2019 10 14 58770 0.1837 0.2913 -0.18789 2019 10 15 58771 0.1826 0.2903 -0.18894 2019 10 16 58772 0.1814 0.2893 -0.18993 2019 10 17 58773 0.1802 0.2883 -0.19084 2019 10 18 58774 0.1791 0.2873 -0.19164 2019 10 19 58775 0.1778 0.2864 -0.19235 2019 10 20 58776 0.1766 0.2855 -0.19299 2019 10 21 58777 0.1754 0.2846 -0.19364 2019 10 22 58778 0.1741 0.2837 -0.19438 2019 10 23 58779 0.1728 0.2828 -0.19529 2019 10 24 58780 0.1715 0.2820 -0.19642 2019 10 25 58781 0.1702 0.2812 -0.19781 2019 10 26 58782 0.1689 0.2804 -0.19939 2019 10 27 58783 0.1675 0.2796 -0.20108 2019 10 28 58784 0.1662 0.2788 -0.20273 2019 10 29 58785 0.1648 0.2781 -0.20422 2019 10 30 58786 0.1634 0.2774 -0.20550 2019 10 31 58787 0.1620 0.2767 -0.20655 2019 11 1 58788 0.1606 0.2760 -0.20740 2019 11 2 58789 0.1591 0.2753 -0.20814 2019 11 3 58790 0.1577 0.2747 -0.20884 2019 11 4 58791 0.1562 0.2741 -0.20955 2019 11 5 58792 0.1547 0.2735 -0.21034 2019 11 6 58793 0.1532 0.2730 -0.21123 2019 11 7 58794 0.1517 0.2725 -0.21223 2019 11 8 58795 0.1502 0.2719 -0.21333 2019 11 9 58796 0.1487 0.2715 -0.21451 2019 11 10 58797 0.1472 0.2710 -0.21573 2019 11 11 58798 0.1456 0.2706 -0.21694 2019 11 12 58799 0.1441 0.2702 -0.21811 2019 11 13 58800 0.1425 0.2698 -0.21918 2019 11 14 58801 0.1410 0.2694 -0.22012 2019 11 15 58802 0.1394 0.2691 -0.22093 2019 11 16 58803 0.1378 0.2688 -0.22164 2019 11 17 58804 0.1362 0.2685 -0.22229 2019 11 18 58805 0.1346 0.2682 -0.22295 2019 11 19 58806 0.1330 0.2680 -0.22372 2019 11 20 58807 0.1314 0.2678 -0.22464 2019 11 21 58808 0.1298 0.2676 -0.22576 2019 11 22 58809 0.1281 0.2674 -0.22707 2019 11 23 58810 0.1265 0.2673 -0.22851 2019 11 24 58811 0.1249 0.2672 -0.22996 2019 11 25 58812 0.1233 0.2671 -0.23131 2019 11 26 58813 0.1216 0.2671 -0.23247 2019 11 27 58814 0.1200 0.2671 -0.23337 2019 11 28 58815 0.1184 0.2671 -0.23402 2019 11 29 58816 0.1167 0.2671 -0.23448 2019 11 30 58817 0.1151 0.2671 -0.23484 2019 12 1 58818 0.1134 0.2672 -0.23516 2019 12 2 58819 0.1118 0.2673 -0.23554 2019 12 3 58820 0.1102 0.2674 -0.23602 2019 12 4 58821 0.1085 0.2676 -0.23664 2019 12 5 58822 0.1069 0.2678 -0.23739 2019 12 6 58823 0.1053 0.2680 -0.23824 2019 12 7 58824 0.1036 0.2682 -0.23917 2019 12 8 58825 0.1020 0.2685 -0.24012 2019 12 9 58826 0.1004 0.2688 -0.24105 2019 12 10 58827 0.0988 0.2691 -0.24193 2019 12 11 58828 0.0972 0.2694 -0.24269 2019 12 12 58829 0.0956 0.2698 -0.24333 2019 12 13 58830 0.0940 0.2702 -0.24389 2019 12 14 58831 0.0924 0.2706 -0.24433 2019 12 15 58832 0.0908 0.2711 -0.24476 2019 12 16 58833 0.0892 0.2715 -0.24530 2019 12 17 58834 0.0876 0.2720 -0.24603 2019 12 18 58835 0.0861 0.2725 -0.24695 2019 12 19 58836 0.0845 0.2731 -0.24802 2019 12 20 58837 0.0830 0.2737 -0.24920 2019 12 21 58838 0.0814 0.2743 -0.25037 2019 12 22 58839 0.0799 0.2749 -0.25143 2019 12 23 58840 0.0784 0.2755 -0.25237 2019 12 24 58841 0.0769 0.2762 -0.25309 2019 12 25 58842 0.0754 0.2769 -0.25355 2019 12 26 58843 0.0739 0.2776 -0.25382 2019 12 27 58844 0.0725 0.2783 -0.25401 2019 12 28 58845 0.0710 0.2791 -0.25414 2019 12 29 58846 0.0696 0.2799 -0.25426 2019 12 30 58847 0.0681 0.2807 -0.25448 2019 12 31 58848 0.0667 0.2816 -0.25482 2020 1 1 58849 0.0653 0.2824 -0.25524 2020 1 2 58850 0.0640 0.2833 -0.25579 2020 1 3 58851 0.0626 0.2842 -0.25642 2020 1 4 58852 0.0613 0.2851 -0.25712 2020 1 5 58853 0.0599 0.2861 -0.25785 2020 1 6 58854 0.0586 0.2870 -0.25857 2020 1 7 58855 0.0573 0.2880 -0.25920 2020 1 8 58856 0.0560 0.2890 -0.25967 2020 1 9 58857 0.0548 0.2901 -0.25999 2020 1 10 58858 0.0536 0.2911 -0.26021 2020 1 11 58859 0.0523 0.2922 -0.26045 2020 1 12 58860 0.0511 0.2933 -0.26076 2020 1 13 58861 0.0500 0.2944 -0.26122 2020 1 14 58862 0.0488 0.2955 -0.26190 2020 1 15 58863 0.0477 0.2967 -0.26279 2020 1 16 58864 0.0465 0.2979 -0.26386 2020 1 17 58865 0.0454 0.2990 -0.26500 2020 1 18 58866 0.0444 0.3002 -0.26605 2020 1 19 58867 0.0433 0.3015 -0.26695 2020 1 20 58868 0.0423 0.3027 -0.26773 2020 1 21 58869 0.0413 0.3040 -0.26839 2020 1 22 58870 0.0403 0.3052 -0.26885 2020 1 23 58871 0.0393 0.3065 -0.26915 2020 1 24 58872 0.0384 0.3078 -0.26945 2020 1 25 58873 0.0375 0.3092 -0.26987 2020 1 26 58874 0.0366 0.3105 -0.27038 2020 1 27 58875 0.0358 0.3118 -0.27100 2020 1 28 58876 0.0349 0.3132 -0.27175 2020 1 29 58877 0.0341 0.3146 -0.27258 2020 1 30 58878 0.0333 0.3160 -0.27347 2020 1 31 58879 0.0326 0.3174 -0.27444 2020 2 1 58880 0.0318 0.3188 -0.27541 2020 2 2 58881 0.0311 0.3202 -0.27636 2020 2 3 58882 0.0304 0.3217 -0.27722 2020 2 4 58883 0.0298 0.3231 -0.27805 2020 2 5 58884 0.0292 0.3246 -0.27885 2020 2 6 58885 0.0286 0.3261 -0.27959 2020 2 7 58886 0.0280 0.3276 -0.28029 2020 2 8 58887 0.0275 0.3290 -0.28103 2020 2 9 58888 0.0270 0.3306 -0.28192 2020 2 10 58889 0.0265 0.3321 -0.28303 2020 2 11 58890 0.0260 0.3336 -0.28441 2020 2 12 58891 0.0256 0.3351 -0.28597 2020 2 13 58892 0.0252 0.3367 -0.28762 2020 2 14 58893 0.0248 0.3382 -0.28927 2020 2 15 58894 0.0245 0.3397 -0.29080 2020 2 16 58895 0.0242 0.3413 -0.29211 2020 2 17 58896 0.0239 0.3429 -0.29320 2020 2 18 58897 0.0236 0.3444 -0.29413 2020 2 19 58898 0.0234 0.3460 -0.29499 2020 2 20 58899 0.0232 0.3476 -0.29587 2020 2 21 58900 0.0230 0.3492 -0.29684 2020 2 22 58901 0.0229 0.3507 -0.29789 2020 2 23 58902 0.0228 0.3523 -0.29900 2020 2 24 58903 0.0227 0.3539 -0.30022 2020 2 25 58904 0.0227 0.3555 -0.30150 2020 2 26 58905 0.0227 0.3571 -0.30284 2020 2 27 58906 0.0227 0.3587 -0.30423 2020 2 28 58907 0.0227 0.3603 -0.30565 2020 2 29 58908 0.0228 0.3619 -0.30707 2020 3 1 58909 0.0229 0.3635 -0.30842 2020 3 2 58910 0.0231 0.3651 -0.30964 2020 3 3 58911 0.0232 0.3666 -0.31072 2020 3 4 58912 0.0234 0.3682 -0.31167 2020 3 5 58913 0.0237 0.3698 -0.31255 2020 3 6 58914 0.0239 0.3714 -0.31346 2020 3 7 58915 0.0242 0.3730 -0.31453 2020 3 8 58916 0.0245 0.3745 -0.31586 2020 3 9 58917 0.0249 0.3761 -0.31746 2020 3 10 58918 0.0253 0.3777 -0.31922 2020 3 11 58919 0.0257 0.3792 -0.32108 2020 3 12 58920 0.0261 0.3808 -0.32288 2020 3 13 58921 0.0266 0.3823 -0.32451 2020 3 14 58922 0.0271 0.3839 -0.32586 2020 3 15 58923 0.0276 0.3854 -0.32688 2020 3 16 58924 0.0282 0.3869 -0.32767 2020 3 17 58925 0.0287 0.3884 -0.32828 2020 3 18 58926 0.0294 0.3900 -0.32884 2020 3 19 58927 0.0300 0.3915 -0.32941 2020 3 20 58928 0.0307 0.3929 -0.33007 2020 3 21 58929 0.0314 0.3944 -0.33085 2020 3 22 58930 0.0321 0.3959 -0.33164 2020 3 23 58931 0.0329 0.3973 -0.33253 2020 3 24 58932 0.0337 0.3988 -0.33354 2020 3 25 58933 0.0345 0.4002 -0.33461 2020 3 26 58934 0.0353 0.4017 -0.33576 2020 3 27 58935 0.0362 0.4031 -0.33694 2020 3 28 58936 0.0371 0.4045 -0.33810 2020 3 29 58937 0.0380 0.4058 -0.33922 2020 3 30 58938 0.0390 0.4072 -0.34026 2020 3 31 58939 0.0399 0.4086 -0.34120 2020 4 1 58940 0.0410 0.4099 -0.34206 2020 4 2 58941 0.0420 0.4112 -0.34295 2020 4 3 58942 0.0430 0.4125 -0.34395 2020 4 4 58943 0.0441 0.4138 -0.34517 2020 4 5 58944 0.0452 0.4151 -0.34667 2020 4 6 58945 0.0464 0.4163 -0.34846 2020 4 7 58946 0.0475 0.4176 -0.35050 2020 4 8 58947 0.0487 0.4188 -0.35268 2020 4 9 58948 0.0499 0.4200 -0.35485 2020 4 10 58949 0.0511 0.4212 -0.35678 2020 4 11 58950 0.0524 0.4224 -0.35845 2020 4 12 58951 0.0537 0.4235 -0.35987 2020 4 13 58952 0.0549 0.4246 -0.36107 2020 4 14 58953 0.0563 0.4257 -0.36219 2020 4 15 58954 0.0576 0.4268 -0.36325 2020 4 16 58955 0.0590 0.4279 -0.36434 2020 4 17 58956 0.0604 0.4289 -0.36547 2020 4 18 58957 0.0618 0.4300 -0.36668 2020 4 19 58958 0.0632 0.4310 -0.36794 2020 4 20 58959 0.0646 0.4319 -0.36925 2020 4 21 58960 0.0661 0.4329 -0.37066 2020 4 22 58961 0.0676 0.4338 -0.37212 2020 4 23 58962 0.0691 0.4347 -0.37349 2020 4 24 58963 0.0706 0.4356 -0.37472 2020 4 25 58964 0.0721 0.4365 -0.37583 2020 4 26 58965 0.0737 0.4373 -0.37681 2020 4 27 58966 0.0753 0.4381 -0.37760 2020 4 28 58967 0.0768 0.4389 -0.37822 2020 4 29 58968 0.0784 0.4397 -0.37876 2020 4 30 58969 0.0801 0.4404 -0.37934 2020 5 1 58970 0.0817 0.4411 -0.37998 These predictions are based on all announced leap seconds. 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).