********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 25 April 2019 Vol. XXXII No. 017 ______________________________________________________________________ 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 19 58592 0.05857 .00009 0.40193 .00009 -0.139469 0.000011 19 4 20 58593 0.05930 .00009 0.40282 .00009 -0.140792 0.000013 19 4 21 58594 0.06026 .00009 0.40373 .00009 -0.141926 0.000013 19 4 22 58595 0.06129 .00009 0.40488 .00009 -0.142800 0.000008 19 4 23 58596 0.06215 .00009 0.40621 .00009 -0.143460 0.000010 19 4 24 58597 0.06285 .00009 0.40737 .00009 -0.144005 0.000010 19 4 25 58598 0.06352 .00009 0.40827 .00009 -0.144494 0.000009 _______________________________________________________________________ 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 = 0.1150 - 0.0460 cos A + 0.0802 sin A - 0.0100 cos C - 0.0235 sin C y = 0.3523 + 0.0731 cos A + 0.0402 sin A - 0.0235 cos C + 0.0100 sin C UT1-UTC = -0.1116 - 0.00065 (MJD - 58606) - (UT2-UT1) where A = 2*pi*(MJD-58598)/365.25 and C = 2*pi*(MJD-58598)/435. TAI-UTC(MJD 58599) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58598)**0.80 S t = 0.00025 (MJD-58598)**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 26 58599 0.0643 0.4091 -0.14499 2019 4 27 58600 0.0652 0.4098 -0.14554 2019 4 28 58601 0.0663 0.4105 -0.14615 2019 4 29 58602 0.0674 0.4113 -0.14686 2019 4 30 58603 0.0687 0.4120 -0.14768 2019 5 1 58604 0.0699 0.4129 -0.14862 2019 5 2 58605 0.0711 0.4138 -0.14966 2019 5 3 58606 0.0724 0.4146 -0.15075 2019 5 4 58607 0.0736 0.4154 -0.15183 2019 5 5 58608 0.0748 0.4161 -0.15284 2019 5 6 58609 0.0761 0.4168 -0.15372 2019 5 7 58610 0.0775 0.4175 -0.15444 2019 5 8 58611 0.0788 0.4182 -0.15499 2019 5 9 58612 0.0802 0.4189 -0.15541 2019 5 10 58613 0.0816 0.4196 -0.15577 2019 5 11 58614 0.0831 0.4203 -0.15618 2019 5 12 58615 0.0845 0.4209 -0.15671 2019 5 13 58616 0.0859 0.4216 -0.15741 2019 5 14 58617 0.0873 0.4221 -0.15828 2019 5 15 58618 0.0887 0.4227 -0.15929 2019 5 16 58619 0.0902 0.4232 -0.16036 2019 5 17 58620 0.0917 0.4237 -0.16138 2019 5 18 58621 0.0932 0.4242 -0.16225 2019 5 19 58622 0.0947 0.4247 -0.16292 2019 5 20 58623 0.0962 0.4252 -0.16339 2019 5 21 58624 0.0977 0.4256 -0.16366 2019 5 22 58625 0.0992 0.4260 -0.16381 2019 5 23 58626 0.1007 0.4264 -0.16387 2019 5 24 58627 0.1023 0.4268 -0.16392 2019 5 25 58628 0.1038 0.4271 -0.16400 2019 5 26 58629 0.1053 0.4274 -0.16415 2019 5 27 58630 0.1069 0.4277 -0.16438 2019 5 28 58631 0.1084 0.4279 -0.16472 2019 5 29 58632 0.1100 0.4282 -0.16512 2019 5 30 58633 0.1116 0.4284 -0.16558 2019 5 31 58634 0.1131 0.4286 -0.16604 2019 6 1 58635 0.1147 0.4287 -0.16646 2019 6 2 58636 0.1163 0.4288 -0.16679 2019 6 3 58637 0.1178 0.4289 -0.16698 2019 6 4 58638 0.1194 0.4290 -0.16704 2019 6 5 58639 0.1210 0.4291 -0.16698 2019 6 6 58640 0.1226 0.4291 -0.16687 2019 6 7 58641 0.1242 0.4291 -0.16679 2019 6 8 58642 0.1257 0.4291 -0.16684 2019 6 9 58643 0.1273 0.4290 -0.16704 2019 6 10 58644 0.1289 0.4290 -0.16742 2019 6 11 58645 0.1305 0.4289 -0.16792 2019 6 12 58646 0.1320 0.4287 -0.16848 2019 6 13 58647 0.1336 0.4286 -0.16902 2019 6 14 58648 0.1352 0.4284 -0.16943 2019 6 15 58649 0.1368 0.4282 -0.16968 2019 6 16 58650 0.1383 0.4280 -0.16974 2019 6 17 58651 0.1399 0.4277 -0.16961 2019 6 18 58652 0.1414 0.4275 -0.16934 2019 6 19 58653 0.1430 0.4272 -0.16899 2019 6 20 58654 0.1445 0.4268 -0.16863 2019 6 21 58655 0.1461 0.4265 -0.16829 2019 6 22 58656 0.1476 0.4261 -0.16803 2019 6 23 58657 0.1491 0.4257 -0.16787 2019 6 24 58658 0.1506 0.4253 -0.16781 2019 6 25 58659 0.1521 0.4248 -0.16785 2019 6 26 58660 0.1536 0.4244 -0.16795 2019 6 27 58661 0.1551 0.4239 -0.16809 2019 6 28 58662 0.1566 0.4233 -0.16821 2019 6 29 58663 0.1581 0.4228 -0.16828 2019 6 30 58664 0.1595 0.4222 -0.16825 2019 7 1 58665 0.1610 0.4216 -0.16810 2019 7 2 58666 0.1624 0.4210 -0.16784 2019 7 3 58667 0.1638 0.4204 -0.16752 2019 7 4 58668 0.1652 0.4197 -0.16722 2019 7 5 58669 0.1666 0.4190 -0.16702 2019 7 6 58670 0.1680 0.4183 -0.16699 2019 7 7 58671 0.1694 0.4176 -0.16713 2019 7 8 58672 0.1707 0.4169 -0.16741 2019 7 9 58673 0.1721 0.4161 -0.16773 2019 7 10 58674 0.1734 0.4153 -0.16803 2019 7 11 58675 0.1747 0.4145 -0.16820 2019 7 12 58676 0.1760 0.4136 -0.16822 2019 7 13 58677 0.1773 0.4128 -0.16804 2019 7 14 58678 0.1785 0.4119 -0.16768 2019 7 15 58679 0.1798 0.4110 -0.16718 2019 7 16 58680 0.1810 0.4101 -0.16659 2019 7 17 58681 0.1822 0.4091 -0.16597 2019 7 18 58682 0.1834 0.4082 -0.16537 2019 7 19 58683 0.1846 0.4072 -0.16484 2019 7 20 58684 0.1857 0.4062 -0.16442 2019 7 21 58685 0.1869 0.4052 -0.16411 2019 7 22 58686 0.1880 0.4042 -0.16391 2019 7 23 58687 0.1891 0.4031 -0.16380 2019 7 24 58688 0.1902 0.4020 -0.16374 2019 7 25 58689 0.1912 0.4009 -0.16371 2019 7 26 58690 0.1922 0.3998 -0.16364 2019 7 27 58691 0.1932 0.3987 -0.16352 2019 7 28 58692 0.1942 0.3976 -0.16331 2019 7 29 58693 0.1952 0.3964 -0.16301 2019 7 30 58694 0.1961 0.3953 -0.16264 2019 7 31 58695 0.1971 0.3941 -0.16227 2019 8 1 58696 0.1980 0.3929 -0.16200 2019 8 2 58697 0.1988 0.3917 -0.16191 2019 8 3 58698 0.1997 0.3904 -0.16204 2019 8 4 58699 0.2005 0.3892 -0.16236 2019 8 5 58700 0.2013 0.3879 -0.16280 2019 8 6 58701 0.2021 0.3867 -0.16325 2019 8 7 58702 0.2028 0.3854 -0.16359 2019 8 8 58703 0.2036 0.3841 -0.16376 2019 8 9 58704 0.2043 0.3828 -0.16374 2019 8 10 58705 0.2049 0.3815 -0.16353 2019 8 11 58706 0.2056 0.3802 -0.16318 2019 8 12 58707 0.2062 0.3788 -0.16272 2019 8 13 58708 0.2068 0.3775 -0.16223 2019 8 14 58709 0.2074 0.3761 -0.16177 2019 8 15 58710 0.2079 0.3747 -0.16138 2019 8 16 58711 0.2084 0.3734 -0.16110 2019 8 17 58712 0.2089 0.3720 -0.16095 2019 8 18 58713 0.2094 0.3706 -0.16091 2019 8 19 58714 0.2098 0.3692 -0.16098 2019 8 20 58715 0.2103 0.3678 -0.16112 2019 8 21 58716 0.2106 0.3664 -0.16129 2019 8 22 58717 0.2110 0.3650 -0.16145 2019 8 23 58718 0.2113 0.3635 -0.16156 2019 8 24 58719 0.2116 0.3621 -0.16160 2019 8 25 58720 0.2119 0.3607 -0.16157 2019 8 26 58721 0.2121 0.3592 -0.16148 2019 8 27 58722 0.2123 0.3578 -0.16138 2019 8 28 58723 0.2125 0.3563 -0.16136 2019 8 29 58724 0.2127 0.3549 -0.16152 2019 8 30 58725 0.2128 0.3534 -0.16191 2019 8 31 58726 0.2129 0.3520 -0.16256 2019 9 1 58727 0.2130 0.3505 -0.16341 2019 9 2 58728 0.2130 0.3490 -0.16432 2019 9 3 58729 0.2131 0.3476 -0.16519 2019 9 4 58730 0.2130 0.3461 -0.16590 2019 9 5 58731 0.2130 0.3447 -0.16640 2019 9 6 58732 0.2129 0.3432 -0.16670 2019 9 7 58733 0.2128 0.3417 -0.16682 2019 9 8 58734 0.2127 0.3403 -0.16685 2019 9 9 58735 0.2125 0.3388 -0.16683 2019 9 10 58736 0.2124 0.3374 -0.16684 2019 9 11 58737 0.2121 0.3359 -0.16691 2019 9 12 58738 0.2119 0.3345 -0.16709 2019 9 13 58739 0.2116 0.3330 -0.16740 2019 9 14 58740 0.2113 0.3316 -0.16783 2019 9 15 58741 0.2110 0.3302 -0.16837 2019 9 16 58742 0.2106 0.3287 -0.16900 2019 9 17 58743 0.2103 0.3273 -0.16966 2019 9 18 58744 0.2098 0.3259 -0.17031 2019 9 19 58745 0.2094 0.3245 -0.17091 2019 9 20 58746 0.2089 0.3231 -0.17144 2019 9 21 58747 0.2084 0.3217 -0.17189 2019 9 22 58748 0.2079 0.3203 -0.17226 2019 9 23 58749 0.2074 0.3189 -0.17260 2019 9 24 58750 0.2068 0.3175 -0.17298 2019 9 25 58751 0.2062 0.3162 -0.17350 2019 9 26 58752 0.2056 0.3148 -0.17424 2019 9 27 58753 0.2049 0.3135 -0.17524 2019 9 28 58754 0.2042 0.3121 -0.17648 2019 9 29 58755 0.2035 0.3108 -0.17788 2019 9 30 58756 0.2028 0.3095 -0.17931 2019 10 1 58757 0.2020 0.3082 -0.18063 2019 10 2 58758 0.2012 0.3069 -0.18175 2019 10 3 58759 0.2004 0.3056 -0.18264 2019 10 4 58760 0.1996 0.3044 -0.18332 2019 10 5 58761 0.1987 0.3031 -0.18385 2019 10 6 58762 0.1978 0.3019 -0.18431 2019 10 7 58763 0.1969 0.3006 -0.18476 2019 10 8 58764 0.1959 0.2994 -0.18527 2019 10 9 58765 0.1950 0.2982 -0.18587 2019 10 10 58766 0.1940 0.2971 -0.18658 2019 10 11 58767 0.1930 0.2959 -0.18742 2019 10 12 58768 0.1920 0.2948 -0.18838 2019 10 13 58769 0.1909 0.2936 -0.18941 2019 10 14 58770 0.1898 0.2925 -0.19050 2019 10 15 58771 0.1887 0.2914 -0.19158 2019 10 16 58772 0.1876 0.2903 -0.19260 2019 10 17 58773 0.1865 0.2893 -0.19354 2019 10 18 58774 0.1853 0.2882 -0.19438 2019 10 19 58775 0.1841 0.2872 -0.19512 2019 10 20 58776 0.1829 0.2862 -0.19580 2019 10 21 58777 0.1817 0.2852 -0.19648 2019 10 22 58778 0.1804 0.2843 -0.19725 2019 10 23 58779 0.1792 0.2833 -0.19819 2019 10 24 58780 0.1779 0.2824 -0.19936 2019 10 25 58781 0.1766 0.2815 -0.20078 2019 10 26 58782 0.1752 0.2806 -0.20240 2019 10 27 58783 0.1739 0.2797 -0.20411 2019 10 28 58784 0.1725 0.2789 -0.20579 2019 10 29 58785 0.1712 0.2781 -0.20731 2019 10 30 58786 0.1698 0.2773 -0.20860 2019 10 31 58787 0.1684 0.2765 -0.20966 2019 11 1 58788 0.1670 0.2757 -0.21053 2019 11 2 58789 0.1655 0.2750 -0.21127 2019 11 3 58790 0.1641 0.2743 -0.21196 2019 11 4 58791 0.1626 0.2736 -0.21266 2019 11 5 58792 0.1611 0.2729 -0.21343 2019 11 6 58793 0.1596 0.2723 -0.21430 2019 11 7 58794 0.1581 0.2717 -0.21526 2019 11 8 58795 0.1566 0.2711 -0.21631 2019 11 9 58796 0.1551 0.2705 -0.21741 2019 11 10 58797 0.1535 0.2700 -0.21853 2019 11 11 58798 0.1520 0.2695 -0.21963 2019 11 12 58799 0.1504 0.2690 -0.22067 2019 11 13 58800 0.1488 0.2685 -0.22160 2019 11 14 58801 0.1472 0.2681 -0.22240 2019 11 15 58802 0.1456 0.2676 -0.22308 2019 11 16 58803 0.1440 0.2672 -0.22365 2019 11 17 58804 0.1424 0.2669 -0.22417 2019 11 18 58805 0.1408 0.2665 -0.22472 2019 11 19 58806 0.1392 0.2662 -0.22538 2019 11 20 58807 0.1375 0.2659 -0.22622 2019 11 21 58808 0.1359 0.2657 -0.22730 2019 11 22 58809 0.1342 0.2654 -0.22858 2019 11 23 58810 0.1326 0.2652 -0.23002 2019 11 24 58811 0.1309 0.2650 -0.23148 2019 11 25 58812 0.1293 0.2649 -0.23287 2019 11 26 58813 0.1276 0.2648 -0.23407 2019 11 27 58814 0.1259 0.2647 -0.23506 2019 11 28 58815 0.1242 0.2646 -0.23584 2019 11 29 58816 0.1226 0.2645 -0.23646 2019 11 30 58817 0.1209 0.2645 -0.23698 2019 12 1 58818 0.1192 0.2645 -0.23746 2019 12 2 58819 0.1175 0.2645 -0.23798 2019 12 3 58820 0.1159 0.2646 -0.23859 2019 12 4 58821 0.1142 0.2647 -0.23930 2019 12 5 58822 0.1125 0.2648 -0.24010 2019 12 6 58823 0.1108 0.2649 -0.24097 2019 12 7 58824 0.1091 0.2651 -0.24186 2019 12 8 58825 0.1075 0.2653 -0.24272 2019 12 9 58826 0.1058 0.2655 -0.24358 2019 12 10 58827 0.1041 0.2658 -0.24435 2019 12 11 58828 0.1025 0.2660 -0.24495 2019 12 12 58829 0.1008 0.2663 -0.24540 2019 12 13 58830 0.0992 0.2667 -0.24575 2019 12 14 58831 0.0975 0.2670 -0.24603 2019 12 15 58832 0.0959 0.2674 -0.24626 2019 12 16 58833 0.0942 0.2678 -0.24663 2019 12 17 58834 0.0926 0.2682 -0.24719 2019 12 18 58835 0.0910 0.2687 -0.24791 2019 12 19 58836 0.0894 0.2692 -0.24884 2019 12 20 58837 0.0878 0.2697 -0.24990 2019 12 21 58838 0.0862 0.2702 -0.25103 2019 12 22 58839 0.0846 0.2708 -0.25214 2019 12 23 58840 0.0830 0.2714 -0.25314 2019 12 24 58841 0.0814 0.2720 -0.25392 2019 12 25 58842 0.0799 0.2726 -0.25445 2019 12 26 58843 0.0783 0.2733 -0.25477 2019 12 27 58844 0.0768 0.2740 -0.25497 2019 12 28 58845 0.0753 0.2747 -0.25514 2019 12 29 58846 0.0738 0.2754 -0.25533 2019 12 30 58847 0.0723 0.2762 -0.25557 2019 12 31 58848 0.0708 0.2770 -0.25592 2020 1 1 58849 0.0693 0.2778 -0.25639 2020 1 2 58850 0.0679 0.2786 -0.25699 2020 1 3 58851 0.0664 0.2795 -0.25769 2020 1 4 58852 0.0650 0.2804 -0.25840 2020 1 5 58853 0.0636 0.2813 -0.25909 2020 1 6 58854 0.0622 0.2822 -0.25981 2020 1 7 58855 0.0609 0.2831 -0.26051 2020 1 8 58856 0.0595 0.2841 -0.26106 2020 1 9 58857 0.0582 0.2851 -0.26145 2020 1 10 58858 0.0569 0.2861 -0.26179 2020 1 11 58859 0.0556 0.2872 -0.26224 2020 1 12 58860 0.0543 0.2882 -0.26279 2020 1 13 58861 0.0530 0.2893 -0.26352 2020 1 14 58862 0.0518 0.2904 -0.26447 2020 1 15 58863 0.0506 0.2915 -0.26560 2020 1 16 58864 0.0494 0.2926 -0.26684 2020 1 17 58865 0.0482 0.2938 -0.26815 2020 1 18 58866 0.0470 0.2950 -0.26940 2020 1 19 58867 0.0459 0.2962 -0.27050 2020 1 20 58868 0.0448 0.2974 -0.27141 2020 1 21 58869 0.0437 0.2986 -0.27217 2020 1 22 58870 0.0426 0.2999 -0.27284 2020 1 23 58871 0.0416 0.3011 -0.27343 2020 1 24 58872 0.0406 0.3024 -0.27394 2020 1 25 58873 0.0396 0.3037 -0.27445 2020 1 26 58874 0.0386 0.3050 -0.27501 2020 1 27 58875 0.0377 0.3064 -0.27568 2020 1 28 58876 0.0367 0.3077 -0.27647 2020 1 29 58877 0.0359 0.3091 -0.27737 2020 1 30 58878 0.0350 0.3105 -0.27835 2020 1 31 58879 0.0341 0.3119 -0.27943 2020 2 1 58880 0.0333 0.3133 -0.28053 2020 2 2 58881 0.0325 0.3147 -0.28158 2020 2 3 58882 0.0318 0.3161 -0.28255 2020 2 4 58883 0.0310 0.3176 -0.28345 2020 2 5 58884 0.0303 0.3190 -0.28432 2020 2 6 58885 0.0296 0.3205 -0.28517 2020 2 7 58886 0.0290 0.3220 -0.28608 2020 2 8 58887 0.0284 0.3235 -0.28707 2020 2 9 58888 0.0278 0.3250 -0.28819 2020 2 10 58889 0.0272 0.3265 -0.28952 2020 2 11 58890 0.0267 0.3280 -0.29106 2020 2 12 58891 0.0261 0.3295 -0.29274 2020 2 13 58892 0.0257 0.3311 -0.29450 2020 2 14 58893 0.0252 0.3326 -0.29624 2020 2 15 58894 0.0248 0.3342 -0.29786 2020 2 16 58895 0.0244 0.3357 -0.29928 2020 2 17 58896 0.0240 0.3373 -0.30045 2020 2 18 58897 0.0237 0.3389 -0.30138 2020 2 19 58898 0.0234 0.3405 -0.30215 2020 2 20 58899 0.0231 0.3421 -0.30284 2020 2 21 58900 0.0229 0.3437 -0.30355 2020 2 22 58901 0.0226 0.3453 -0.30434 2020 2 23 58902 0.0225 0.3469 -0.30529 2020 2 24 58903 0.0223 0.3485 -0.30634 2020 2 25 58904 0.0222 0.3501 -0.30743 2020 2 26 58905 0.0221 0.3517 -0.30855 2020 2 27 58906 0.0220 0.3533 -0.30964 2020 2 28 58907 0.0220 0.3549 -0.31069 2020 2 29 58908 0.0220 0.3565 -0.31165 2020 3 1 58909 0.0220 0.3581 -0.31245 2020 3 2 58910 0.0221 0.3598 -0.31316 2020 3 3 58911 0.0222 0.3614 -0.31376 2020 3 4 58912 0.0223 0.3630 -0.31429 2020 3 5 58913 0.0224 0.3646 -0.31482 2020 3 6 58914 0.0226 0.3662 -0.31541 2020 3 7 58915 0.0228 0.3678 -0.31617 2020 3 8 58916 0.0231 0.3694 -0.31705 2020 3 9 58917 0.0234 0.3710 -0.31818 2020 3 10 58918 0.0237 0.3726 -0.31961 2020 3 11 58919 0.0240 0.3742 -0.32119 2020 3 12 58920 0.0244 0.3758 -0.32286 2020 3 13 58921 0.0248 0.3774 -0.32446 2020 3 14 58922 0.0252 0.3790 -0.32591 2020 3 15 58923 0.0257 0.3805 -0.32717 2020 3 16 58924 0.0262 0.3821 -0.32825 2020 3 17 58925 0.0267 0.3837 -0.32916 2020 3 18 58926 0.0272 0.3852 -0.32999 2020 3 19 58927 0.0278 0.3868 -0.33085 2020 3 20 58928 0.0284 0.3883 -0.33178 2020 3 21 58929 0.0291 0.3898 -0.33286 2020 3 22 58930 0.0297 0.3913 -0.33409 2020 3 23 58931 0.0304 0.3928 -0.33544 2020 3 24 58932 0.0312 0.3943 -0.33691 2020 3 25 58933 0.0319 0.3958 -0.33848 2020 3 26 58934 0.0327 0.3973 -0.34010 2020 3 27 58935 0.0335 0.3987 -0.34163 2020 3 28 58936 0.0344 0.4002 -0.34310 2020 3 29 58937 0.0352 0.4016 -0.34448 2020 3 30 58938 0.0361 0.4030 -0.34574 2020 3 31 58939 0.0370 0.4044 -0.34694 2020 4 1 58940 0.0380 0.4058 -0.34806 2020 4 2 58941 0.0390 0.4072 -0.34918 2020 4 3 58942 0.0400 0.4086 -0.35036 2020 4 4 58943 0.0410 0.4099 -0.35170 2020 4 5 58944 0.0421 0.4113 -0.35323 2020 4 6 58945 0.0432 0.4126 -0.35500 2020 4 7 58946 0.0443 0.4139 -0.35703 2020 4 8 58947 0.0454 0.4151 -0.35921 2020 4 9 58948 0.0466 0.4164 -0.36128 2020 4 10 58949 0.0478 0.4177 -0.36310 2020 4 11 58950 0.0490 0.4189 -0.36466 2020 4 12 58951 0.0502 0.4201 -0.36595 2020 4 13 58952 0.0515 0.4213 -0.36698 2020 4 14 58953 0.0527 0.4225 -0.36780 2020 4 15 58954 0.0540 0.4236 -0.36853 2020 4 16 58955 0.0554 0.4247 -0.36930 2020 4 17 58956 0.0567 0.4258 -0.37008 2020 4 18 58957 0.0581 0.4269 -0.37096 2020 4 19 58958 0.0595 0.4280 -0.37189 2020 4 20 58959 0.0609 0.4290 -0.37292 2020 4 21 58960 0.0623 0.4301 -0.37403 2020 4 22 58961 0.0638 0.4311 -0.37516 2020 4 23 58962 0.0653 0.4320 -0.37631 2020 4 24 58963 0.0667 0.4330 -0.37735 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) 58576 -103.88 0.46 -10.23 0.21 58577 -104.03 0.46 -10.08 0.21 58578 -104.18 0.46 -10.09 0.21 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58576 0.150 0.184 -0.229 0.214 58577 0.156 0.184 -0.226 0.214 58578 0.162 0.184 -0.222 0.214 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).