********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 6 June 2019 Vol. XXXII No. 023 ______________________________________________________________________ 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 5 31 58634 0.10698 .00009 0.42934 .00009 -0.169455 0.000012 19 6 1 58635 0.10922 .00009 0.42935 .00009 -0.170042 0.000012 19 6 2 58636 0.11175 .00009 0.42966 .00009 -0.170586 0.000011 19 6 3 58637 0.11438 .00009 0.43022 .00009 -0.170977 0.000008 19 6 4 58638 0.11696 .00009 0.43079 .00009 -0.171223 0.000008 19 6 5 58639 0.11919 .00009 0.43121 .00009 -0.171394 0.000008 19 6 6 58640 0.12101 .00009 0.43138 .00009 -0.171508 0.000055 IERS Final Values MJD x y UT1-UTC " " s 19 4 2 58575 0.0498 0.3853 -0.12016 19 4 3 58576 0.0505 0.3865 -0.12124 19 4 4 58577 0.0511 0.3879 -0.12248 19 4 5 58578 0.0513 0.3891 -0.12377 19 4 6 58579 0.0516 0.3901 -0.12503 19 4 7 58580 0.0518 0.3913 -0.12632 19 4 8 58581 0.0518 0.3923 -0.12760 19 4 9 58582 0.0521 0.3933 -0.12876 19 4 10 58583 0.0525 0.3943 -0.12978 19 4 11 58584 0.0531 0.3951 -0.13073 19 4 12 58585 0.0538 0.3962 -0.13145 19 4 13 58586 0.0547 0.3973 -0.13223 19 4 14 58587 0.0551 0.3983 -0.13307 19 4 15 58588 0.0552 0.3991 -0.13407 19 4 16 58589 0.0558 0.4000 -0.13525 19 4 17 58590 0.0567 0.4007 -0.13660 19 4 18 58591 0.0578 0.4010 -0.13808 19 4 19 58592 0.0586 0.4019 -0.13950 19 4 20 58593 0.0592 0.4028 -0.14081 19 4 21 58594 0.0602 0.4037 -0.14193 19 4 22 58595 0.0614 0.4048 -0.14277 19 4 23 58596 0.0622 0.4063 -0.14338 19 4 24 58597 0.0628 0.4074 -0.14401 19 4 25 58598 0.0634 0.4083 -0.14449 19 4 26 58599 0.0645 0.4088 -0.14500 19 4 27 58600 0.0657 0.4093 -0.14557 19 4 28 58601 0.0671 0.4095 -0.14618 19 4 29 58602 0.0685 0.4100 -0.14685 19 4 30 58603 0.0702 0.4106 -0.14764 19 5 1 58604 0.0722 0.4114 -0.14856 _______________________________________________________________________ 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 = 0.1275 + 0.0160 cos A + 0.0821 sin A - 0.0257 cos C - 0.0053 sin C y = 0.3664 + 0.0736 cos A - 0.0180 sin A - 0.0053 cos C + 0.0257 sin C UT1-UTC = -0.1388 - 0.00064 (MJD - 58648) - (UT2-UT1) where A = 2*pi*(MJD-58640)/365.25 and C = 2*pi*(MJD-58640)/435. TAI-UTC(MJD 58641) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58640)**0.80 S t = 0.00025 (MJD-58640)**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 6 7 58641 0.1227 0.4314 -0.17160 2019 6 8 58642 0.1244 0.4314 -0.17178 2019 6 9 58643 0.1261 0.4313 -0.17211 2019 6 10 58644 0.1279 0.4312 -0.17258 2019 6 11 58645 0.1297 0.4311 -0.17317 2019 6 12 58646 0.1315 0.4311 -0.17380 2019 6 13 58647 0.1332 0.4311 -0.17438 2019 6 14 58648 0.1349 0.4311 -0.17483 2019 6 15 58649 0.1364 0.4310 -0.17511 2019 6 16 58650 0.1380 0.4309 -0.17518 2019 6 17 58651 0.1395 0.4307 -0.17506 2019 6 18 58652 0.1411 0.4304 -0.17481 2019 6 19 58653 0.1427 0.4301 -0.17449 2019 6 20 58654 0.1442 0.4298 -0.17414 2019 6 21 58655 0.1458 0.4295 -0.17383 2019 6 22 58656 0.1473 0.4291 -0.17358 2019 6 23 58657 0.1489 0.4287 -0.17341 2019 6 24 58658 0.1504 0.4283 -0.17334 2019 6 25 58659 0.1519 0.4279 -0.17337 2019 6 26 58660 0.1533 0.4275 -0.17347 2019 6 27 58661 0.1548 0.4270 -0.17360 2019 6 28 58662 0.1563 0.4264 -0.17372 2019 6 29 58663 0.1577 0.4259 -0.17380 2019 6 30 58664 0.1592 0.4253 -0.17377 2019 7 1 58665 0.1606 0.4248 -0.17361 2019 7 2 58666 0.1620 0.4242 -0.17333 2019 7 3 58667 0.1634 0.4235 -0.17299 2019 7 4 58668 0.1648 0.4229 -0.17265 2019 7 5 58669 0.1662 0.4222 -0.17241 2019 7 6 58670 0.1675 0.4215 -0.17233 2019 7 7 58671 0.1689 0.4208 -0.17242 2019 7 8 58672 0.1702 0.4200 -0.17264 2019 7 9 58673 0.1715 0.4193 -0.17291 2019 7 10 58674 0.1728 0.4185 -0.17314 2019 7 11 58675 0.1741 0.4177 -0.17324 2019 7 12 58676 0.1754 0.4168 -0.17316 2019 7 13 58677 0.1766 0.4160 -0.17287 2019 7 14 58678 0.1778 0.4151 -0.17240 2019 7 15 58679 0.1790 0.4142 -0.17178 2019 7 16 58680 0.1802 0.4133 -0.17107 2019 7 17 58681 0.1814 0.4123 -0.17034 2019 7 18 58682 0.1826 0.4114 -0.16963 2019 7 19 58683 0.1837 0.4104 -0.16900 2019 7 20 58684 0.1848 0.4094 -0.16846 2019 7 21 58685 0.1859 0.4084 -0.16804 2019 7 22 58686 0.1870 0.4074 -0.16773 2019 7 23 58687 0.1881 0.4063 -0.16750 2019 7 24 58688 0.1891 0.4053 -0.16732 2019 7 25 58689 0.1901 0.4042 -0.16716 2019 7 26 58690 0.1911 0.4031 -0.16697 2019 7 27 58691 0.1921 0.4020 -0.16672 2019 7 28 58692 0.1930 0.4008 -0.16637 2019 7 29 58693 0.1940 0.3997 -0.16593 2019 7 30 58694 0.1949 0.3985 -0.16542 2019 7 31 58695 0.1957 0.3973 -0.16491 2019 8 1 58696 0.1966 0.3961 -0.16450 2019 8 2 58697 0.1974 0.3949 -0.16427 2019 8 3 58698 0.1982 0.3937 -0.16426 2019 8 4 58699 0.1990 0.3925 -0.16444 2019 8 5 58700 0.1998 0.3912 -0.16473 2019 8 6 58701 0.2005 0.3899 -0.16502 2019 8 7 58702 0.2012 0.3887 -0.16521 2019 8 8 58703 0.2019 0.3874 -0.16524 2019 8 9 58704 0.2026 0.3861 -0.16507 2019 8 10 58705 0.2032 0.3848 -0.16472 2019 8 11 58706 0.2038 0.3834 -0.16425 2019 8 12 58707 0.2044 0.3821 -0.16369 2019 8 13 58708 0.2049 0.3808 -0.16313 2019 8 14 58709 0.2055 0.3794 -0.16260 2019 8 15 58710 0.2060 0.3780 -0.16215 2019 8 16 58711 0.2064 0.3767 -0.16182 2019 8 17 58712 0.2069 0.3753 -0.16162 2019 8 18 58713 0.2073 0.3739 -0.16155 2019 8 19 58714 0.2077 0.3725 -0.16159 2019 8 20 58715 0.2081 0.3711 -0.16170 2019 8 21 58716 0.2084 0.3697 -0.16184 2019 8 22 58717 0.2087 0.3683 -0.16199 2019 8 23 58718 0.2090 0.3668 -0.16209 2019 8 24 58719 0.2093 0.3654 -0.16213 2019 8 25 58720 0.2095 0.3640 -0.16210 2019 8 26 58721 0.2097 0.3625 -0.16201 2019 8 27 58722 0.2099 0.3611 -0.16191 2019 8 28 58723 0.2100 0.3596 -0.16190 2019 8 29 58724 0.2101 0.3582 -0.16206 2019 8 30 58725 0.2102 0.3567 -0.16246 2019 8 31 58726 0.2102 0.3553 -0.16311 2019 9 1 58727 0.2103 0.3538 -0.16395 2019 9 2 58728 0.2103 0.3524 -0.16488 2019 9 3 58729 0.2102 0.3509 -0.16575 2019 9 4 58730 0.2102 0.3494 -0.16647 2019 9 5 58731 0.2101 0.3480 -0.16698 2019 9 6 58732 0.2100 0.3465 -0.16728 2019 9 7 58733 0.2098 0.3451 -0.16742 2019 9 8 58734 0.2097 0.3436 -0.16745 2019 9 9 58735 0.2095 0.3422 -0.16744 2019 9 10 58736 0.2092 0.3407 -0.16745 2019 9 11 58737 0.2090 0.3393 -0.16752 2019 9 12 58738 0.2087 0.3378 -0.16770 2019 9 13 58739 0.2084 0.3364 -0.16801 2019 9 14 58740 0.2080 0.3349 -0.16845 2019 9 15 58741 0.2077 0.3335 -0.16899 2019 9 16 58742 0.2073 0.3321 -0.16962 2019 9 17 58743 0.2068 0.3306 -0.17028 2019 9 18 58744 0.2064 0.3292 -0.17093 2019 9 19 58745 0.2059 0.3278 -0.17153 2019 9 20 58746 0.2054 0.3264 -0.17205 2019 9 21 58747 0.2049 0.3250 -0.17249 2019 9 22 58748 0.2043 0.3236 -0.17287 2019 9 23 58749 0.2037 0.3222 -0.17320 2019 9 24 58750 0.2031 0.3209 -0.17357 2019 9 25 58751 0.2024 0.3195 -0.17407 2019 9 26 58752 0.2018 0.3182 -0.17479 2019 9 27 58753 0.2011 0.3168 -0.17578 2019 9 28 58754 0.2004 0.3155 -0.17701 2019 9 29 58755 0.1996 0.3142 -0.17840 2019 9 30 58756 0.1988 0.3128 -0.17982 2019 10 1 58757 0.1980 0.3115 -0.18112 2019 10 2 58758 0.1972 0.3103 -0.18223 2019 10 3 58759 0.1964 0.3090 -0.18310 2019 10 4 58760 0.1955 0.3077 -0.18376 2019 10 5 58761 0.1946 0.3065 -0.18428 2019 10 6 58762 0.1937 0.3052 -0.18471 2019 10 7 58763 0.1927 0.3040 -0.18514 2019 10 8 58764 0.1917 0.3028 -0.18562 2019 10 9 58765 0.1907 0.3016 -0.18619 2019 10 10 58766 0.1897 0.3005 -0.18688 2019 10 11 58767 0.1887 0.2993 -0.18768 2019 10 12 58768 0.1876 0.2981 -0.18860 2019 10 13 58769 0.1865 0.2970 -0.18960 2019 10 14 58770 0.1854 0.2959 -0.19063 2019 10 15 58771 0.1843 0.2948 -0.19166 2019 10 16 58772 0.1831 0.2937 -0.19263 2019 10 17 58773 0.1820 0.2927 -0.19352 2019 10 18 58774 0.1808 0.2916 -0.19429 2019 10 19 58775 0.1796 0.2906 -0.19496 2019 10 20 58776 0.1783 0.2896 -0.19558 2019 10 21 58777 0.1771 0.2886 -0.19619 2019 10 22 58778 0.1758 0.2877 -0.19689 2019 10 23 58779 0.1745 0.2867 -0.19775 2019 10 24 58780 0.1732 0.2858 -0.19884 2019 10 25 58781 0.1719 0.2849 -0.20017 2019 10 26 58782 0.1705 0.2840 -0.20170 2019 10 27 58783 0.1692 0.2832 -0.20332 2019 10 28 58784 0.1678 0.2823 -0.20490 2019 10 29 58785 0.1664 0.2815 -0.20633 2019 10 30 58786 0.1650 0.2807 -0.20752 2019 10 31 58787 0.1636 0.2799 -0.20847 2019 11 1 58788 0.1621 0.2792 -0.20923 2019 11 2 58789 0.1607 0.2784 -0.20986 2019 11 3 58790 0.1592 0.2777 -0.21044 2019 11 4 58791 0.1577 0.2771 -0.21104 2019 11 5 58792 0.1562 0.2764 -0.21170 2019 11 6 58793 0.1547 0.2758 -0.21246 2019 11 7 58794 0.1532 0.2751 -0.21334 2019 11 8 58795 0.1516 0.2746 -0.21431 2019 11 9 58796 0.1501 0.2740 -0.21537 2019 11 10 58797 0.1485 0.2735 -0.21647 2019 11 11 58798 0.1470 0.2729 -0.21758 2019 11 12 58799 0.1454 0.2725 -0.21863 2019 11 13 58800 0.1438 0.2720 -0.21959 2019 11 14 58801 0.1422 0.2715 -0.22043 2019 11 15 58802 0.1406 0.2711 -0.22115 2019 11 16 58803 0.1390 0.2707 -0.22177 2019 11 17 58804 0.1374 0.2704 -0.22236 2019 11 18 58805 0.1358 0.2700 -0.22299 2019 11 19 58806 0.1341 0.2697 -0.22375 2019 11 20 58807 0.1325 0.2694 -0.22469 2019 11 21 58808 0.1308 0.2692 -0.22584 2019 11 22 58809 0.1292 0.2690 -0.22718 2019 11 23 58810 0.1275 0.2688 -0.22863 2019 11 24 58811 0.1259 0.2686 -0.23010 2019 11 25 58812 0.1242 0.2684 -0.23147 2019 11 26 58813 0.1225 0.2683 -0.23265 2019 11 27 58814 0.1209 0.2682 -0.23359 2019 11 28 58815 0.1192 0.2681 -0.23432 2019 11 29 58816 0.1175 0.2681 -0.23489 2019 11 30 58817 0.1158 0.2681 -0.23538 2019 12 1 58818 0.1142 0.2681 -0.23585 2019 12 2 58819 0.1125 0.2681 -0.23637 2019 12 3 58820 0.1108 0.2682 -0.23698 2019 12 4 58821 0.1091 0.2682 -0.23769 2019 12 5 58822 0.1075 0.2684 -0.23850 2019 12 6 58823 0.1058 0.2685 -0.23941 2019 12 7 58824 0.1041 0.2687 -0.24039 2019 12 8 58825 0.1025 0.2689 -0.24138 2019 12 9 58826 0.1008 0.2691 -0.24236 2019 12 10 58827 0.0992 0.2693 -0.24328 2019 12 11 58828 0.0975 0.2696 -0.24410 2019 12 12 58829 0.0959 0.2699 -0.24481 2019 12 13 58830 0.0942 0.2703 -0.24542 2019 12 14 58831 0.0926 0.2706 -0.24596 2019 12 15 58832 0.0910 0.2710 -0.24651 2019 12 16 58833 0.0893 0.2714 -0.24713 2019 12 17 58834 0.0877 0.2718 -0.24789 2019 12 18 58835 0.0861 0.2723 -0.24881 2019 12 19 58836 0.0845 0.2728 -0.24988 2019 12 20 58837 0.0829 0.2733 -0.25104 2019 12 21 58838 0.0814 0.2738 -0.25221 2019 12 22 58839 0.0798 0.2744 -0.25330 2019 12 23 58840 0.0782 0.2750 -0.25423 2019 12 24 58841 0.0767 0.2756 -0.25497 2019 12 25 58842 0.0751 0.2763 -0.25550 2019 12 26 58843 0.0736 0.2769 -0.25589 2019 12 27 58844 0.0721 0.2776 -0.25619 2019 12 28 58845 0.0706 0.2783 -0.25647 2019 12 29 58846 0.0691 0.2791 -0.25682 2019 12 30 58847 0.0677 0.2798 -0.25728 2019 12 31 58848 0.0662 0.2806 -0.25788 2020 1 1 58849 0.0648 0.2814 -0.25863 2020 1 2 58850 0.0633 0.2823 -0.25950 2020 1 3 58851 0.0619 0.2831 -0.26045 2020 1 4 58852 0.0605 0.2840 -0.26143 2020 1 5 58853 0.0592 0.2849 -0.26240 2020 1 6 58854 0.0578 0.2859 -0.26329 2020 1 7 58855 0.0565 0.2868 -0.26406 2020 1 8 58856 0.0551 0.2878 -0.26470 2020 1 9 58857 0.0538 0.2888 -0.26521 2020 1 10 58858 0.0526 0.2898 -0.26563 2020 1 11 58859 0.0513 0.2908 -0.26607 2020 1 12 58860 0.0500 0.2919 -0.26661 2020 1 13 58861 0.0488 0.2930 -0.26731 2020 1 14 58862 0.0476 0.2941 -0.26821 2020 1 15 58863 0.0464 0.2952 -0.26927 2020 1 16 58864 0.0453 0.2963 -0.27042 2020 1 17 58865 0.0441 0.2975 -0.27155 2020 1 18 58866 0.0430 0.2987 -0.27258 2020 1 19 58867 0.0419 0.2999 -0.27340 2020 1 20 58868 0.0408 0.3011 -0.27401 2020 1 21 58869 0.0398 0.3023 -0.27440 2020 1 22 58870 0.0387 0.3036 -0.27463 2020 1 23 58871 0.0377 0.3049 -0.27482 2020 1 24 58872 0.0367 0.3061 -0.27505 2020 1 25 58873 0.0358 0.3074 -0.27535 2020 1 26 58874 0.0348 0.3088 -0.27573 2020 1 27 58875 0.0339 0.3101 -0.27624 2020 1 28 58876 0.0331 0.3115 -0.27690 2020 1 29 58877 0.0322 0.3128 -0.27770 2020 1 30 58878 0.0314 0.3142 -0.27859 2020 1 31 58879 0.0306 0.3156 -0.27949 2020 2 1 58880 0.0298 0.3170 -0.28038 2020 2 2 58881 0.0290 0.3184 -0.28121 2020 2 3 58882 0.0283 0.3199 -0.28193 2020 2 4 58883 0.0276 0.3213 -0.28251 2020 2 5 58884 0.0269 0.3228 -0.28295 2020 2 6 58885 0.0263 0.3242 -0.28326 2020 2 7 58886 0.0257 0.3257 -0.28356 2020 2 8 58887 0.0251 0.3272 -0.28395 2020 2 9 58888 0.0245 0.3287 -0.28449 2020 2 10 58889 0.0240 0.3302 -0.28529 2020 2 11 58890 0.0235 0.3318 -0.28638 2020 2 12 58891 0.0230 0.3333 -0.28773 2020 2 13 58892 0.0226 0.3348 -0.28917 2020 2 14 58893 0.0222 0.3364 -0.29058 2020 2 15 58894 0.0218 0.3379 -0.29186 2020 2 16 58895 0.0214 0.3395 -0.29293 2020 2 17 58896 0.0211 0.3411 -0.29381 2020 2 18 58897 0.0208 0.3427 -0.29454 2020 2 19 58898 0.0205 0.3442 -0.29514 2020 2 20 58899 0.0203 0.3458 -0.29571 2020 2 21 58900 0.0201 0.3474 -0.29632 2020 2 22 58901 0.0199 0.3490 -0.29694 2020 2 23 58902 0.0198 0.3506 -0.29764 2020 2 24 58903 0.0197 0.3522 -0.29848 2020 2 25 58904 0.0196 0.3538 -0.29946 2020 2 26 58905 0.0195 0.3555 -0.30052 2020 2 27 58906 0.0195 0.3571 -0.30162 2020 2 28 58907 0.0195 0.3587 -0.30272 2020 2 29 58908 0.0196 0.3603 -0.30375 2020 3 1 58909 0.0196 0.3619 -0.30468 2020 3 2 58910 0.0197 0.3635 -0.30554 2020 3 3 58911 0.0198 0.3652 -0.30630 2020 3 4 58912 0.0200 0.3668 -0.30692 2020 3 5 58913 0.0202 0.3684 -0.30748 2020 3 6 58914 0.0204 0.3700 -0.30809 2020 3 7 58915 0.0207 0.3716 -0.30882 2020 3 8 58916 0.0210 0.3732 -0.30972 2020 3 9 58917 0.0213 0.3748 -0.31092 2020 3 10 58918 0.0216 0.3764 -0.31240 2020 3 11 58919 0.0220 0.3780 -0.31402 2020 3 12 58920 0.0224 0.3796 -0.31568 2020 3 13 58921 0.0228 0.3812 -0.31724 2020 3 14 58922 0.0233 0.3828 -0.31863 2020 3 15 58923 0.0238 0.3843 -0.31982 2020 3 16 58924 0.0243 0.3859 -0.32082 2020 3 17 58925 0.0249 0.3875 -0.32166 2020 3 18 58926 0.0254 0.3890 -0.32237 2020 3 19 58927 0.0261 0.3906 -0.32302 2020 3 20 58928 0.0267 0.3921 -0.32371 2020 3 21 58929 0.0274 0.3936 -0.32450 2020 3 22 58930 0.0281 0.3951 -0.32538 2020 3 23 58931 0.0288 0.3966 -0.32636 2020 3 24 58932 0.0296 0.3981 -0.32744 2020 3 25 58933 0.0303 0.3996 -0.32859 2020 3 26 58934 0.0312 0.4011 -0.32979 2020 3 27 58935 0.0320 0.4025 -0.33100 2020 3 28 58936 0.0329 0.4040 -0.33211 2020 3 29 58937 0.0338 0.4054 -0.33311 2020 3 30 58938 0.0347 0.4069 -0.33407 2020 3 31 58939 0.0356 0.4083 -0.33499 2020 4 1 58940 0.0366 0.4097 -0.33581 2020 4 2 58941 0.0376 0.4110 -0.33658 2020 4 3 58942 0.0386 0.4124 -0.33745 2020 4 4 58943 0.0397 0.4137 -0.33860 2020 4 5 58944 0.0408 0.4151 -0.34000 2020 4 6 58945 0.0419 0.4164 -0.34169 2020 4 7 58946 0.0430 0.4177 -0.34360 2020 4 8 58947 0.0442 0.4190 -0.34559 2020 4 9 58948 0.0454 0.4202 -0.34752 2020 4 10 58949 0.0466 0.4215 -0.34930 2020 4 11 58950 0.0478 0.4227 -0.35080 2020 4 12 58951 0.0491 0.4239 -0.35205 2020 4 13 58952 0.0503 0.4251 -0.35308 2020 4 14 58953 0.0516 0.4263 -0.35403 2020 4 15 58954 0.0529 0.4274 -0.35500 2020 4 16 58955 0.0543 0.4286 -0.35601 2020 4 17 58956 0.0557 0.4297 -0.35705 2020 4 18 58957 0.0570 0.4308 -0.35816 2020 4 19 58958 0.0584 0.4318 -0.35935 2020 4 20 58959 0.0599 0.4329 -0.36062 2020 4 21 58960 0.0613 0.4339 -0.36195 2020 4 22 58961 0.0628 0.4349 -0.36329 2020 4 23 58962 0.0643 0.4359 -0.36461 2020 4 24 58963 0.0658 0.4369 -0.36589 2020 4 25 58964 0.0673 0.4378 -0.36708 2020 4 26 58965 0.0688 0.4387 -0.36813 2020 4 27 58966 0.0704 0.4396 -0.36903 2020 4 28 58967 0.0720 0.4404 -0.36986 2020 4 29 58968 0.0736 0.4413 -0.37070 2020 4 30 58969 0.0752 0.4421 -0.37163 2020 5 1 58970 0.0768 0.4429 -0.37274 2020 5 2 58971 0.0784 0.4436 -0.37406 2020 5 3 58972 0.0801 0.4444 -0.37559 2020 5 4 58973 0.0817 0.4451 -0.37732 2020 5 5 58974 0.0834 0.4458 -0.37917 2020 5 6 58975 0.0851 0.4464 -0.38100 2020 5 7 58976 0.0868 0.4471 -0.38270 2020 5 8 58977 0.0885 0.4477 -0.38420 2020 5 9 58978 0.0903 0.4482 -0.38545 2020 5 10 58979 0.0920 0.4488 -0.38645 2020 5 11 58980 0.0938 0.4493 -0.38723 2020 5 12 58981 0.0955 0.4498 -0.38787 2020 5 13 58982 0.0973 0.4503 -0.38845 2020 5 14 58983 0.0991 0.4507 -0.38904 2020 5 15 58984 0.1009 0.4511 -0.38971 2020 5 16 58985 0.1027 0.4515 -0.39050 2020 5 17 58986 0.1045 0.4519 -0.39140 2020 5 18 58987 0.1063 0.4522 -0.39234 2020 5 19 58988 0.1081 0.4525 -0.39322 2020 5 20 58989 0.1099 0.4528 -0.39401 2020 5 21 58990 0.1118 0.4530 -0.39463 2020 5 22 58991 0.1136 0.4532 -0.39509 2020 5 23 58992 0.1154 0.4534 -0.39535 2020 5 24 58993 0.1173 0.4536 -0.39538 2020 5 25 58994 0.1191 0.4537 -0.39527 2020 5 26 58995 0.1210 0.4538 -0.39509 2020 5 27 58996 0.1228 0.4538 -0.39493 2020 5 28 58997 0.1247 0.4539 -0.39487 2020 5 29 58998 0.1265 0.4539 -0.39501 2020 5 30 58999 0.1284 0.4539 -0.39537 2020 5 31 59000 0.1302 0.4538 -0.39585 2020 6 1 59001 0.1321 0.4537 -0.39647 2020 6 2 59002 0.1339 0.4536 -0.39720 2020 6 3 59003 0.1358 0.4535 -0.39787 2020 6 4 59004 0.1376 0.4533 -0.39844 2020 6 5 59005 0.1395 0.4531 -0.39881 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) 58618 -103.60 0.12 -11.16 0.16 58619 -104.25 0.12 -11.12 0.16 58620 -104.92 0.12 -11.23 0.16 58621 -105.29 0.05 -11.36 0.13 58622 -105.33 0.08 -11.40 0.18 58623 -105.18 0.08 -11.37 0.18 58624 -105.06 0.20 -11.36 0.28 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 58575 -103.9 -10.5 58576 -103.9 -10.3 58577 -104.1 -10.1 58578 -104.2 -10.1 58579 -104.3 -10.3 58580 -104.4 -10.6 58581 -104.5 -10.8 58582 -104.5 -11.0 58583 -104.6 -11.1 58584 -104.7 -11.1 58585 -104.6 -11.1 58586 -104.4 -11.2 58587 -104.1 -11.4 58588 -103.7 -11.4 58589 -103.5 -11.3 58590 -103.6 -11.1 58591 -103.9 -11.1 58592 -104.3 -11.2 58593 -104.6 -11.3 58594 -104.7 -11.2 58595 -104.6 -11.1 58596 -104.5 -11.1 58597 -104.5 -11.3 58598 -104.7 -11.5 58599 -104.8 -11.6 58600 -104.5 -11.6 58601 -104.0 -11.5 58602 -103.5 -11.4 58603 -103.2 -11.4 58604 -103.4 -11.2 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58618 0.049 0.048 -0.172 0.163 58619 0.038 0.048 -0.171 0.163 58620 0.029 0.048 -0.174 0.163 58621 0.025 0.018 -0.182 0.127 58622 0.026 0.034 -0.197 0.175 58623 0.029 0.034 -0.216 0.175 58624 0.034 0.080 -0.237 0.281 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 58575 0.11 -0.23 58576 0.12 -0.23 58577 0.13 -0.24 58578 0.14 -0.24 58579 0.14 -0.24 58580 0.13 -0.24 58581 0.10 -0.24 58582 0.11 -0.24 58583 0.11 -0.23 58584 0.11 -0.20 58585 0.14 -0.17 58586 0.12 -0.19 58587 0.10 -0.22 58588 0.08 -0.25 58589 0.05 -0.31 58590 0.03 -0.28 58591 0.01 -0.23 58592 0.02 -0.20 58593 0.03 -0.17 58594 0.04 -0.15 58595 0.05 -0.12 58596 0.06 -0.10 58597 0.07 -0.08 58598 0.06 -0.12 58599 0.04 -0.17 58600 0.06 -0.20 58601 0.09 -0.21 58602 0.12 -0.23 58603 0.16 -0.24 58604 0.13 -0.24 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).