********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 1 August 2019 Vol. XXXII No. 031 ______________________________________________________________________ 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 * * https://maia.usno.navy.mil * * and from the backup EO server at: * * http://toshi.nofs.navy.mil ftp://toshi.nofs.navy.mil * * https://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. * * * * As of Bulletin A Vol. XXXII, No. 031, 01 Aug 2019, we have * * incorporated the new USNO VLBI solutions -- usno2019c.eoxy and * * usno2019c.eopi. The effect appears to be less than 0.1 mas in * * polar motion and 10 us in UT1-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 7 26 58690 0.19181 .00009 0.39679 .00009 -0.163196 0.000020 19 7 27 58691 0.19418 .00009 0.39565 .00009 -0.162787 0.000031 19 7 28 58692 0.19651 .00009 0.39499 .00009 -0.162368 0.000027 19 7 29 58693 0.19859 .00009 0.39460 .00009 -0.161844 0.000019 19 7 30 58694 0.20055 .00009 0.39408 .00009 -0.161209 0.000017 19 7 31 58695 0.20261 .00009 0.39327 .00009 -0.160651 0.000017 19 8 1 58696 0.20469 .00009 0.39230 .00009 -0.160208 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 = 0.1395 + 0.0757 cos A + 0.0498 sin A - 0.0077 cos C + 0.0024 sin C y = 0.3481 + 0.0446 cos A - 0.0656 sin A + 0.0024 cos C + 0.0077 sin C UT1-UTC = -0.1677 - 0.00059 (MJD - 58704) - (UT2-UT1) where A = 2*pi*(MJD-58696)/365.25 and C = 2*pi*(MJD-58696)/435. TAI-UTC(MJD 58697) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58696)**0.80 S t = 0.00025 (MJD-58696)**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 8 2 58697 0.2065 0.3914 -0.15994 2019 8 3 58698 0.2081 0.3904 -0.15992 2019 8 4 58699 0.2095 0.3895 -0.16013 2019 8 5 58700 0.2107 0.3885 -0.16047 2019 8 6 58701 0.2118 0.3876 -0.16084 2019 8 7 58702 0.2127 0.3865 -0.16111 2019 8 8 58703 0.2135 0.3854 -0.16120 2019 8 9 58704 0.2143 0.3842 -0.16108 2019 8 10 58705 0.2151 0.3830 -0.16079 2019 8 11 58706 0.2159 0.3817 -0.16037 2019 8 12 58707 0.2165 0.3804 -0.15986 2019 8 13 58708 0.2171 0.3791 -0.15929 2019 8 14 58709 0.2177 0.3778 -0.15873 2019 8 15 58710 0.2182 0.3765 -0.15822 2019 8 16 58711 0.2186 0.3752 -0.15780 2019 8 17 58712 0.2190 0.3738 -0.15748 2019 8 18 58713 0.2193 0.3723 -0.15726 2019 8 19 58714 0.2196 0.3708 -0.15714 2019 8 20 58715 0.2199 0.3694 -0.15708 2019 8 21 58716 0.2201 0.3679 -0.15704 2019 8 22 58717 0.2204 0.3664 -0.15698 2019 8 23 58718 0.2205 0.3649 -0.15686 2019 8 24 58719 0.2207 0.3635 -0.15667 2019 8 25 58720 0.2208 0.3620 -0.15640 2019 8 26 58721 0.2209 0.3604 -0.15608 2019 8 27 58722 0.2210 0.3589 -0.15575 2019 8 28 58723 0.2210 0.3574 -0.15550 2019 8 29 58724 0.2210 0.3558 -0.15543 2019 8 30 58725 0.2210 0.3543 -0.15563 2019 8 31 58726 0.2210 0.3528 -0.15609 2019 9 1 58727 0.2209 0.3512 -0.15675 2019 9 2 58728 0.2208 0.3497 -0.15752 2019 9 3 58729 0.2207 0.3482 -0.15825 2019 9 4 58730 0.2205 0.3467 -0.15885 2019 9 5 58731 0.2203 0.3451 -0.15926 2019 9 6 58732 0.2201 0.3436 -0.15946 2019 9 7 58733 0.2198 0.3421 -0.15951 2019 9 8 58734 0.2195 0.3406 -0.15946 2019 9 9 58735 0.2192 0.3390 -0.15938 2019 9 10 58736 0.2189 0.3375 -0.15932 2019 9 11 58737 0.2185 0.3360 -0.15935 2019 9 12 58738 0.2181 0.3345 -0.15948 2019 9 13 58739 0.2177 0.3330 -0.15974 2019 9 14 58740 0.2172 0.3316 -0.16014 2019 9 15 58741 0.2168 0.3301 -0.16064 2019 9 16 58742 0.2162 0.3286 -0.16123 2019 9 17 58743 0.2157 0.3271 -0.16186 2019 9 18 58744 0.2151 0.3257 -0.16249 2019 9 19 58745 0.2145 0.3242 -0.16307 2019 9 20 58746 0.2139 0.3228 -0.16358 2019 9 21 58747 0.2132 0.3214 -0.16400 2019 9 22 58748 0.2125 0.3200 -0.16436 2019 9 23 58749 0.2118 0.3186 -0.16469 2019 9 24 58750 0.2111 0.3172 -0.16505 2019 9 25 58751 0.2103 0.3158 -0.16555 2019 9 26 58752 0.2095 0.3144 -0.16627 2019 9 27 58753 0.2086 0.3130 -0.16724 2019 9 28 58754 0.2078 0.3117 -0.16845 2019 9 29 58755 0.2069 0.3103 -0.16982 2019 9 30 58756 0.2060 0.3090 -0.17121 2019 10 1 58757 0.2050 0.3077 -0.17249 2019 10 2 58758 0.2041 0.3064 -0.17357 2019 10 3 58759 0.2031 0.3051 -0.17440 2019 10 4 58760 0.2020 0.3039 -0.17501 2019 10 5 58761 0.2010 0.3026 -0.17547 2019 10 6 58762 0.1999 0.3014 -0.17584 2019 10 7 58763 0.1988 0.3002 -0.17621 2019 10 8 58764 0.1977 0.2990 -0.17662 2019 10 9 58765 0.1966 0.2978 -0.17712 2019 10 10 58766 0.1954 0.2966 -0.17774 2019 10 11 58767 0.1942 0.2954 -0.17848 2019 10 12 58768 0.1930 0.2943 -0.17933 2019 10 13 58769 0.1917 0.2932 -0.18027 2019 10 14 58770 0.1905 0.2921 -0.18125 2019 10 15 58771 0.1892 0.2910 -0.18222 2019 10 16 58772 0.1879 0.2900 -0.18313 2019 10 17 58773 0.1865 0.2889 -0.18395 2019 10 18 58774 0.1852 0.2879 -0.18466 2019 10 19 58775 0.1838 0.2869 -0.18527 2019 10 20 58776 0.1824 0.2859 -0.18582 2019 10 21 58777 0.1810 0.2850 -0.18637 2019 10 22 58778 0.1796 0.2840 -0.18700 2019 10 23 58779 0.1781 0.2831 -0.18779 2019 10 24 58780 0.1767 0.2822 -0.18880 2019 10 25 58781 0.1752 0.2814 -0.19005 2019 10 26 58782 0.1737 0.2805 -0.19150 2019 10 27 58783 0.1722 0.2797 -0.19304 2019 10 28 58784 0.1706 0.2789 -0.19453 2019 10 29 58785 0.1691 0.2781 -0.19587 2019 10 30 58786 0.1675 0.2774 -0.19697 2019 10 31 58787 0.1659 0.2767 -0.19783 2019 11 1 58788 0.1643 0.2759 -0.19850 2019 11 2 58789 0.1627 0.2753 -0.19905 2019 11 3 58790 0.1611 0.2746 -0.19955 2019 11 4 58791 0.1595 0.2740 -0.20008 2019 11 5 58792 0.1578 0.2734 -0.20067 2019 11 6 58793 0.1561 0.2728 -0.20137 2019 11 7 58794 0.1545 0.2722 -0.20219 2019 11 8 58795 0.1528 0.2717 -0.20311 2019 11 9 58796 0.1511 0.2712 -0.20413 2019 11 10 58797 0.1494 0.2707 -0.20519 2019 11 11 58798 0.1476 0.2703 -0.20626 2019 11 12 58799 0.1459 0.2699 -0.20728 2019 11 13 58800 0.1442 0.2695 -0.20821 2019 11 14 58801 0.1424 0.2691 -0.20902 2019 11 15 58802 0.1407 0.2688 -0.20972 2019 11 16 58803 0.1389 0.2685 -0.21032 2019 11 17 58804 0.1371 0.2682 -0.21089 2019 11 18 58805 0.1354 0.2679 -0.21148 2019 11 19 58806 0.1336 0.2677 -0.21218 2019 11 20 58807 0.1318 0.2675 -0.21307 2019 11 21 58808 0.1300 0.2673 -0.21417 2019 11 22 58809 0.1282 0.2671 -0.21545 2019 11 23 58810 0.1264 0.2670 -0.21686 2019 11 24 58811 0.1246 0.2669 -0.21828 2019 11 25 58812 0.1228 0.2669 -0.21960 2019 11 26 58813 0.1210 0.2668 -0.22072 2019 11 27 58814 0.1192 0.2668 -0.22161 2019 11 28 58815 0.1174 0.2668 -0.22229 2019 11 29 58816 0.1156 0.2669 -0.22281 2019 11 30 58817 0.1138 0.2670 -0.22325 2019 12 1 58818 0.1120 0.2671 -0.22367 2019 12 2 58819 0.1102 0.2672 -0.22414 2019 12 3 58820 0.1084 0.2673 -0.22468 2019 12 4 58821 0.1066 0.2675 -0.22534 2019 12 5 58822 0.1048 0.2677 -0.22609 2019 12 6 58823 0.1030 0.2680 -0.22693 2019 12 7 58824 0.1012 0.2683 -0.22782 2019 12 8 58825 0.0994 0.2686 -0.22873 2019 12 9 58826 0.0977 0.2689 -0.22961 2019 12 10 58827 0.0959 0.2692 -0.23041 2019 12 11 58828 0.0941 0.2696 -0.23109 2019 12 12 58829 0.0924 0.2700 -0.23165 2019 12 13 58830 0.0906 0.2705 -0.23210 2019 12 14 58831 0.0889 0.2709 -0.23249 2019 12 15 58832 0.0872 0.2714 -0.23290 2019 12 16 58833 0.0854 0.2719 -0.23341 2019 12 17 58834 0.0837 0.2725 -0.23408 2019 12 18 58835 0.0820 0.2731 -0.23495 2019 12 19 58836 0.0803 0.2737 -0.23600 2019 12 20 58837 0.0786 0.2743 -0.23717 2019 12 21 58838 0.0770 0.2749 -0.23836 2019 12 22 58839 0.0753 0.2756 -0.23948 2019 12 23 58840 0.0737 0.2763 -0.24044 2019 12 24 58841 0.0720 0.2770 -0.24121 2019 12 25 58842 0.0704 0.2778 -0.24177 2019 12 26 58843 0.0688 0.2786 -0.24216 2019 12 27 58844 0.0672 0.2794 -0.24245 2019 12 28 58845 0.0657 0.2802 -0.24272 2019 12 29 58846 0.0641 0.2811 -0.24301 2019 12 30 58847 0.0626 0.2820 -0.24338 2019 12 31 58848 0.0610 0.2829 -0.24386 2020 1 1 58849 0.0595 0.2838 -0.24443 2020 1 2 58850 0.0581 0.2847 -0.24511 2020 1 3 58851 0.0566 0.2857 -0.24584 2020 1 4 58852 0.0551 0.2867 -0.24660 2020 1 5 58853 0.0537 0.2877 -0.24735 2020 1 6 58854 0.0523 0.2888 -0.24804 2020 1 7 58855 0.0509 0.2899 -0.24865 2020 1 8 58856 0.0495 0.2910 -0.24914 2020 1 9 58857 0.0482 0.2921 -0.24953 2020 1 10 58858 0.0469 0.2932 -0.24984 2020 1 11 58859 0.0456 0.2944 -0.25016 2020 1 12 58860 0.0443 0.2955 -0.25058 2020 1 13 58861 0.0430 0.2967 -0.25116 2020 1 14 58862 0.0418 0.2979 -0.25196 2020 1 15 58863 0.0406 0.2992 -0.25296 2020 1 16 58864 0.0394 0.3004 -0.25410 2020 1 17 58865 0.0382 0.3017 -0.25526 2020 1 18 58866 0.0371 0.3030 -0.25637 2020 1 19 58867 0.0359 0.3043 -0.25732 2020 1 20 58868 0.0349 0.3057 -0.25808 2020 1 21 58869 0.0338 0.3070 -0.25865 2020 1 22 58870 0.0327 0.3084 -0.25904 2020 1 23 58871 0.0317 0.3098 -0.25933 2020 1 24 58872 0.0308 0.3112 -0.25958 2020 1 25 58873 0.0298 0.3126 -0.25985 2020 1 26 58874 0.0289 0.3140 -0.26020 2020 1 27 58875 0.0280 0.3154 -0.26064 2020 1 28 58876 0.0271 0.3169 -0.26119 2020 1 29 58877 0.0262 0.3184 -0.26184 2020 1 30 58878 0.0254 0.3199 -0.26256 2020 1 31 58879 0.0246 0.3214 -0.26330 2020 2 1 58880 0.0239 0.3229 -0.26403 2020 2 2 58881 0.0231 0.3244 -0.26470 2020 2 3 58882 0.0224 0.3260 -0.26528 2020 2 4 58883 0.0218 0.3275 -0.26575 2020 2 5 58884 0.0211 0.3291 -0.26610 2020 2 6 58885 0.0205 0.3307 -0.26638 2020 2 7 58886 0.0199 0.3322 -0.26664 2020 2 8 58887 0.0194 0.3338 -0.26699 2020 2 9 58888 0.0189 0.3354 -0.26753 2020 2 10 58889 0.0184 0.3371 -0.26834 2020 2 11 58890 0.0179 0.3387 -0.26944 2020 2 12 58891 0.0175 0.3403 -0.27078 2020 2 13 58892 0.0171 0.3420 -0.27225 2020 2 14 58893 0.0167 0.3436 -0.27372 2020 2 15 58894 0.0164 0.3453 -0.27510 2020 2 16 58895 0.0161 0.3469 -0.27631 2020 2 17 58896 0.0158 0.3486 -0.27734 2020 2 18 58897 0.0156 0.3502 -0.27820 2020 2 19 58898 0.0154 0.3519 -0.27896 2020 2 20 58899 0.0152 0.3536 -0.27967 2020 2 21 58900 0.0151 0.3553 -0.28041 2020 2 22 58901 0.0150 0.3570 -0.28121 2020 2 23 58902 0.0149 0.3586 -0.28212 2020 2 24 58903 0.0149 0.3603 -0.28315 2020 2 25 58904 0.0149 0.3620 -0.28428 2020 2 26 58905 0.0149 0.3637 -0.28551 2020 2 27 58906 0.0150 0.3654 -0.28677 2020 2 28 58907 0.0151 0.3671 -0.28802 2020 2 29 58908 0.0152 0.3688 -0.28922 2020 3 1 58909 0.0153 0.3705 -0.29032 2020 3 2 58910 0.0155 0.3722 -0.29129 2020 3 3 58911 0.0158 0.3739 -0.29213 2020 3 4 58912 0.0160 0.3756 -0.29285 2020 3 5 58913 0.0163 0.3772 -0.29351 2020 3 6 58914 0.0166 0.3789 -0.29421 2020 3 7 58915 0.0170 0.3806 -0.29504 2020 3 8 58916 0.0174 0.3823 -0.29612 2020 3 9 58917 0.0178 0.3839 -0.29750 2020 3 10 58918 0.0182 0.3856 -0.29916 2020 3 11 58919 0.0187 0.3872 -0.30102 2020 3 12 58920 0.0192 0.3889 -0.30295 2020 3 13 58921 0.0198 0.3905 -0.30476 2020 3 14 58922 0.0204 0.3922 -0.30631 2020 3 15 58923 0.0210 0.3938 -0.30767 2020 3 16 58924 0.0216 0.3954 -0.30880 2020 3 17 58925 0.0223 0.3970 -0.30970 2020 3 18 58926 0.0230 0.3986 -0.31046 2020 3 19 58927 0.0238 0.4002 -0.31119 2020 3 20 58928 0.0245 0.4018 -0.31196 2020 3 21 58929 0.0253 0.4033 -0.31277 2020 3 22 58930 0.0261 0.4049 -0.31367 2020 3 23 58931 0.0270 0.4064 -0.31467 2020 3 24 58932 0.0279 0.4080 -0.31578 2020 3 25 58933 0.0288 0.4095 -0.31694 2020 3 26 58934 0.0298 0.4110 -0.31807 2020 3 27 58935 0.0308 0.4125 -0.31919 2020 3 28 58936 0.0318 0.4140 -0.32027 2020 3 29 58937 0.0328 0.4154 -0.32131 2020 3 30 58938 0.0339 0.4169 -0.32232 2020 3 31 58939 0.0350 0.4183 -0.32321 2020 4 1 58940 0.0361 0.4197 -0.32401 2020 4 2 58941 0.0372 0.4211 -0.32477 2020 4 3 58942 0.0384 0.4225 -0.32560 2020 4 4 58943 0.0396 0.4239 -0.32663 2020 4 5 58944 0.0408 0.4252 -0.32795 2020 4 6 58945 0.0421 0.4266 -0.32956 2020 4 7 58946 0.0434 0.4279 -0.33135 2020 4 8 58947 0.0447 0.4292 -0.33320 2020 4 9 58948 0.0460 0.4304 -0.33499 2020 4 10 58949 0.0474 0.4317 -0.33657 2020 4 11 58950 0.0488 0.4329 -0.33781 2020 4 12 58951 0.0502 0.4341 -0.33874 2020 4 13 58952 0.0516 0.4353 -0.33948 2020 4 14 58953 0.0530 0.4365 -0.34020 2020 4 15 58954 0.0545 0.4377 -0.34094 2020 4 16 58955 0.0560 0.4388 -0.34175 2020 4 17 58956 0.0575 0.4399 -0.34267 2020 4 18 58957 0.0591 0.4410 -0.34373 2020 4 19 58958 0.0607 0.4420 -0.34493 2020 4 20 58959 0.0622 0.4431 -0.34621 2020 4 21 58960 0.0638 0.4441 -0.34757 2020 4 22 58961 0.0655 0.4451 -0.34895 2020 4 23 58962 0.0671 0.4460 -0.35033 2020 4 24 58963 0.0688 0.4470 -0.35163 2020 4 25 58964 0.0705 0.4479 -0.35278 2020 4 26 58965 0.0721 0.4488 -0.35377 2020 4 27 58966 0.0739 0.4496 -0.35462 2020 4 28 58967 0.0756 0.4505 -0.35534 2020 4 29 58968 0.0773 0.4513 -0.35597 2020 4 30 58969 0.0791 0.4521 -0.35660 2020 5 1 58970 0.0809 0.4528 -0.35735 2020 5 2 58971 0.0827 0.4536 -0.35833 2020 5 3 58972 0.0845 0.4543 -0.35956 2020 5 4 58973 0.0863 0.4549 -0.36102 2020 5 5 58974 0.0882 0.4556 -0.36259 2020 5 6 58975 0.0900 0.4562 -0.36418 2020 5 7 58976 0.0919 0.4568 -0.36559 2020 5 8 58977 0.0937 0.4574 -0.36671 2020 5 9 58978 0.0956 0.4579 -0.36753 2020 5 10 58979 0.0975 0.4584 -0.36802 2020 5 11 58980 0.0994 0.4589 -0.36832 2020 5 12 58981 0.1014 0.4593 -0.36850 2020 5 13 58982 0.1033 0.4597 -0.36867 2020 5 14 58983 0.1052 0.4601 -0.36895 2020 5 15 58984 0.1072 0.4605 -0.36940 2020 5 16 58985 0.1091 0.4608 -0.36997 2020 5 17 58986 0.1111 0.4611 -0.37062 2020 5 18 58987 0.1130 0.4614 -0.37136 2020 5 19 58988 0.1150 0.4616 -0.37215 2020 5 20 58989 0.1170 0.4619 -0.37293 2020 5 21 58990 0.1189 0.4620 -0.37364 2020 5 22 58991 0.1209 0.4622 -0.37421 2020 5 23 58992 0.1229 0.4623 -0.37463 2020 5 24 58993 0.1249 0.4624 -0.37487 2020 5 25 58994 0.1269 0.4625 -0.37495 2020 5 26 58995 0.1289 0.4625 -0.37491 2020 5 27 58996 0.1308 0.4625 -0.37484 2020 5 28 58997 0.1328 0.4625 -0.37479 2020 5 29 58998 0.1348 0.4624 -0.37490 2020 5 30 58999 0.1368 0.4623 -0.37522 2020 5 31 59000 0.1388 0.4622 -0.37575 2020 6 1 59001 0.1408 0.4620 -0.37646 2020 6 2 59002 0.1428 0.4619 -0.37727 2020 6 3 59003 0.1447 0.4616 -0.37811 2020 6 4 59004 0.1467 0.4614 -0.37878 2020 6 5 59005 0.1487 0.4611 -0.37922 2020 6 6 59006 0.1507 0.4608 -0.37943 2020 6 7 59007 0.1526 0.4605 -0.37942 2020 6 8 59008 0.1546 0.4601 -0.37931 2020 6 9 59009 0.1565 0.4597 -0.37919 2020 6 10 59010 0.1585 0.4593 -0.37909 2020 6 11 59011 0.1604 0.4588 -0.37908 2020 6 12 59012 0.1623 0.4583 -0.37920 2020 6 13 59013 0.1642 0.4578 -0.37934 2020 6 14 59014 0.1661 0.4573 -0.37952 2020 6 15 59015 0.1680 0.4567 -0.37974 2020 6 16 59016 0.1699 0.4561 -0.37996 2020 6 17 59017 0.1718 0.4555 -0.38011 2020 6 18 59018 0.1737 0.4548 -0.38015 2020 6 19 59019 0.1755 0.4541 -0.38004 2020 6 20 59020 0.1773 0.4534 -0.37977 2020 6 21 59021 0.1792 0.4526 -0.37932 2020 6 22 59022 0.1810 0.4519 -0.37883 2020 6 23 59023 0.1828 0.4511 -0.37831 2020 6 24 59024 0.1845 0.4502 -0.37781 2020 6 25 59025 0.1863 0.4494 -0.37743 2020 6 26 59026 0.1880 0.4485 -0.37725 2020 6 27 59027 0.1898 0.4476 -0.37726 2020 6 28 59028 0.1915 0.4466 -0.37740 2020 6 29 59029 0.1932 0.4456 -0.37765 2020 6 30 59030 0.1949 0.4446 -0.37789 2020 7 1 59031 0.1965 0.4436 -0.37798 2020 7 2 59032 0.1982 0.4426 -0.37790 2020 7 3 59033 0.1998 0.4415 -0.37761 2020 7 4 59034 0.2014 0.4404 -0.37715 2020 7 5 59035 0.2029 0.4393 -0.37660 2020 7 6 59036 0.2045 0.4381 -0.37605 2020 7 7 59037 0.2060 0.4369 -0.37551 2020 7 8 59038 0.2075 0.4357 -0.37501 2020 7 9 59039 0.2090 0.4345 -0.37457 2020 7 10 59040 0.2105 0.4333 -0.37422 2020 7 11 59041 0.2119 0.4320 -0.37396 2020 7 12 59042 0.2133 0.4307 -0.37373 2020 7 13 59043 0.2147 0.4294 -0.37350 2020 7 14 59044 0.2161 0.4281 -0.37323 2020 7 15 59045 0.2174 0.4267 -0.37289 2020 7 16 59046 0.2188 0.4253 -0.37249 2020 7 17 59047 0.2200 0.4239 -0.37201 2020 7 18 59048 0.2213 0.4225 -0.37138 2020 7 19 59049 0.2225 0.4211 -0.37067 2020 7 20 59050 0.2238 0.4196 -0.37002 2020 7 21 59051 0.2249 0.4181 -0.36950 2020 7 22 59052 0.2261 0.4166 -0.36910 2020 7 23 59053 0.2272 0.4151 -0.36886 2020 7 24 59054 0.2283 0.4136 -0.36888 2020 7 25 59055 0.2294 0.4120 -0.36919 2020 7 26 59056 0.2304 0.4104 -0.36963 2020 7 27 59057 0.2314 0.4088 -0.37006 2020 7 28 59058 0.2324 0.4072 -0.37039 2020 7 29 59059 0.2333 0.4056 -0.37051 2020 7 30 59060 0.2342 0.4040 -0.37041 2020 7 31 59061 0.2351 0.4023 -0.37015 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) 58674 -111.58 0.18 -11.08 0.15 58675 -111.77 0.18 -11.06 0.15 58676 -112.14 0.18 -11.02 0.15 58677 -112.58 0.24 -10.97 0.03 58678 -112.87 0.20 -10.96 0.07 58679 -112.90 0.20 -11.04 0.07 58680 -112.75 0.11 -11.19 0.10 58681 -112.58 0.20 -11.29 0.08 58682 -112.52 0.20 -11.26 0.08 58683 -112.62 0.20 -11.11 0.08 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58674 -0.055 0.073 -0.145 0.151 58675 -0.058 0.073 -0.126 0.151 58676 -0.059 0.073 -0.110 0.151 58677 -0.056 0.097 -0.097 0.028 58678 -0.050 0.080 -0.088 0.068 58679 -0.041 0.080 -0.081 0.068 58680 -0.029 0.043 -0.076 0.100 58681 -0.014 0.081 -0.072 0.082 58682 0.003 0.081 -0.067 0.082 58683 0.021 0.081 -0.063 0.082 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).