********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 29 August 2019 Vol. XXXII No. 035 ______________________________________________________________________ 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. 035, 29 Aug 2019, we have fully * * incorporated the new NASA Goddard VLBI solutions -- gsf2019a.eoxy * * gsf2019a.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 8 23 58718 0.21718 .00009 0.36722 .00009 -0.154536 0.000016 19 8 24 58719 0.21693 .00009 0.36551 .00009 -0.154361 0.000016 19 8 25 58720 0.21667 .00009 0.36361 .00009 -0.154082 0.000015 19 8 26 58721 0.21649 .00009 0.36167 .00009 -0.153708 0.000013 19 8 27 58722 0.21638 .00009 0.35981 .00009 -0.153335 0.000013 19 8 28 58723 0.21622 .00009 0.35799 .00009 -0.153001 0.000012 19 8 29 58724 0.21591 .00009 0.35619 .00009 -0.152827 0.000011 _______________________________________________________________________ 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 = 0.1222 + 0.1003 cos A + 0.0239 sin A - 0.0068 cos C - 0.0118 sin C y = 0.3448 + 0.0206 cos A - 0.0875 sin A - 0.0118 cos C + 0.0068 sin C UT1-UTC = -0.1748 - 0.00056 (MJD - 58732) - (UT2-UT1) where A = 2*pi*(MJD-58724)/365.25 and C = 2*pi*(MJD-58724)/435. TAI-UTC(MJD 58725) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58724)**0.80 S t = 0.00025 (MJD-58724)**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 30 58725 0.2157 0.3544 -0.15292 2019 8 31 58726 0.2154 0.3527 -0.15327 2019 9 1 58727 0.2152 0.3511 -0.15382 2019 9 2 58728 0.2150 0.3495 -0.15445 2019 9 3 58729 0.2148 0.3478 -0.15504 2019 9 4 58730 0.2147 0.3463 -0.15549 2019 9 5 58731 0.2145 0.3448 -0.15575 2019 9 6 58732 0.2144 0.3433 -0.15581 2019 9 7 58733 0.2141 0.3418 -0.15571 2019 9 8 58734 0.2139 0.3404 -0.15548 2019 9 9 58735 0.2136 0.3389 -0.15519 2019 9 10 58736 0.2133 0.3375 -0.15492 2019 9 11 58737 0.2129 0.3361 -0.15470 2019 9 12 58738 0.2126 0.3347 -0.15459 2019 9 13 58739 0.2122 0.3333 -0.15461 2019 9 14 58740 0.2118 0.3319 -0.15476 2019 9 15 58741 0.2113 0.3306 -0.15502 2019 9 16 58742 0.2108 0.3293 -0.15534 2019 9 17 58743 0.2103 0.3279 -0.15570 2019 9 18 58744 0.2098 0.3266 -0.15606 2019 9 19 58745 0.2092 0.3253 -0.15638 2019 9 20 58746 0.2086 0.3240 -0.15663 2019 9 21 58747 0.2080 0.3227 -0.15682 2019 9 22 58748 0.2074 0.3214 -0.15695 2019 9 23 58749 0.2067 0.3202 -0.15706 2019 9 24 58750 0.2060 0.3189 -0.15721 2019 9 25 58751 0.2053 0.3177 -0.15751 2019 9 26 58752 0.2045 0.3165 -0.15802 2019 9 27 58753 0.2037 0.3152 -0.15880 2019 9 28 58754 0.2029 0.3140 -0.15982 2019 9 29 58755 0.2021 0.3128 -0.16099 2019 9 30 58756 0.2012 0.3116 -0.16219 2019 10 1 58757 0.2004 0.3105 -0.16328 2019 10 2 58758 0.1995 0.3093 -0.16416 2019 10 3 58759 0.1985 0.3082 -0.16481 2019 10 4 58760 0.1976 0.3071 -0.16524 2019 10 5 58761 0.1966 0.3059 -0.16552 2019 10 6 58762 0.1956 0.3048 -0.16572 2019 10 7 58763 0.1946 0.3038 -0.16592 2019 10 8 58764 0.1935 0.3027 -0.16617 2019 10 9 58765 0.1925 0.3016 -0.16652 2019 10 10 58766 0.1914 0.3006 -0.16699 2019 10 11 58767 0.1903 0.2996 -0.16759 2019 10 12 58768 0.1891 0.2986 -0.16830 2019 10 13 58769 0.1880 0.2976 -0.16911 2019 10 14 58770 0.1868 0.2967 -0.16998 2019 10 15 58771 0.1856 0.2957 -0.17086 2019 10 16 58772 0.1844 0.2948 -0.17169 2019 10 17 58773 0.1831 0.2939 -0.17245 2019 10 18 58774 0.1819 0.2930 -0.17311 2019 10 19 58775 0.1806 0.2921 -0.17367 2019 10 20 58776 0.1793 0.2913 -0.17418 2019 10 21 58777 0.1780 0.2904 -0.17470 2019 10 22 58778 0.1767 0.2896 -0.17530 2019 10 23 58779 0.1753 0.2888 -0.17608 2019 10 24 58780 0.1740 0.2880 -0.17709 2019 10 25 58781 0.1726 0.2873 -0.17835 2019 10 26 58782 0.1712 0.2866 -0.17981 2019 10 27 58783 0.1698 0.2859 -0.18136 2019 10 28 58784 0.1683 0.2852 -0.18288 2019 10 29 58785 0.1669 0.2845 -0.18424 2019 10 30 58786 0.1654 0.2839 -0.18538 2019 10 31 58787 0.1640 0.2832 -0.18629 2019 11 1 58788 0.1625 0.2827 -0.18700 2019 11 2 58789 0.1610 0.2821 -0.18760 2019 11 3 58790 0.1595 0.2815 -0.18814 2019 11 4 58791 0.1579 0.2810 -0.18870 2019 11 5 58792 0.1564 0.2805 -0.18933 2019 11 6 58793 0.1548 0.2800 -0.19005 2019 11 7 58794 0.1533 0.2796 -0.19088 2019 11 8 58795 0.1517 0.2791 -0.19182 2019 11 9 58796 0.1501 0.2787 -0.19283 2019 11 10 58797 0.1485 0.2783 -0.19389 2019 11 11 58798 0.1470 0.2780 -0.19495 2019 11 12 58799 0.1453 0.2776 -0.19596 2019 11 13 58800 0.1437 0.2773 -0.19687 2019 11 14 58801 0.1421 0.2770 -0.19765 2019 11 15 58802 0.1405 0.2768 -0.19830 2019 11 16 58803 0.1388 0.2765 -0.19885 2019 11 17 58804 0.1372 0.2763 -0.19936 2019 11 18 58805 0.1356 0.2761 -0.19990 2019 11 19 58806 0.1339 0.2760 -0.20057 2019 11 20 58807 0.1322 0.2758 -0.20142 2019 11 21 58808 0.1306 0.2757 -0.20249 2019 11 22 58809 0.1289 0.2756 -0.20374 2019 11 23 58810 0.1272 0.2756 -0.20511 2019 11 24 58811 0.1256 0.2755 -0.20649 2019 11 25 58812 0.1239 0.2755 -0.20777 2019 11 26 58813 0.1222 0.2755 -0.20886 2019 11 27 58814 0.1206 0.2756 -0.20972 2019 11 28 58815 0.1189 0.2757 -0.21036 2019 11 29 58816 0.1172 0.2757 -0.21084 2019 11 30 58817 0.1155 0.2759 -0.21123 2019 12 1 58818 0.1139 0.2760 -0.21161 2019 12 2 58819 0.1122 0.2762 -0.21203 2019 12 3 58820 0.1105 0.2764 -0.21253 2019 12 4 58821 0.1089 0.2766 -0.21312 2019 12 5 58822 0.1072 0.2768 -0.21382 2019 12 6 58823 0.1055 0.2771 -0.21460 2019 12 7 58824 0.1039 0.2774 -0.21542 2019 12 8 58825 0.1022 0.2777 -0.21626 2019 12 9 58826 0.1006 0.2781 -0.21706 2019 12 10 58827 0.0989 0.2785 -0.21778 2019 12 11 58828 0.0973 0.2789 -0.21838 2019 12 12 58829 0.0957 0.2793 -0.21886 2019 12 13 58830 0.0941 0.2797 -0.21923 2019 12 14 58831 0.0925 0.2802 -0.21954 2019 12 15 58832 0.0909 0.2807 -0.21987 2019 12 16 58833 0.0893 0.2812 -0.22028 2019 12 17 58834 0.0877 0.2818 -0.22086 2019 12 18 58835 0.0861 0.2824 -0.22163 2019 12 19 58836 0.0845 0.2830 -0.22258 2019 12 20 58837 0.0830 0.2836 -0.22366 2019 12 21 58838 0.0815 0.2842 -0.22476 2019 12 22 58839 0.0799 0.2849 -0.22579 2019 12 23 58840 0.0784 0.2856 -0.22666 2019 12 24 58841 0.0769 0.2863 -0.22734 2019 12 25 58842 0.0754 0.2870 -0.22781 2019 12 26 58843 0.0739 0.2878 -0.22812 2019 12 27 58844 0.0725 0.2886 -0.22833 2019 12 28 58845 0.0710 0.2894 -0.22852 2019 12 29 58846 0.0696 0.2902 -0.22873 2019 12 30 58847 0.0682 0.2911 -0.22903 2019 12 31 58848 0.0668 0.2920 -0.22943 2020 1 1 58849 0.0654 0.2929 -0.22993 2020 1 2 58850 0.0640 0.2938 -0.23054 2020 1 3 58851 0.0627 0.2947 -0.23121 2020 1 4 58852 0.0613 0.2957 -0.23191 2020 1 5 58853 0.0600 0.2967 -0.23260 2020 1 6 58854 0.0587 0.2977 -0.23324 2020 1 7 58855 0.0574 0.2987 -0.23379 2020 1 8 58856 0.0562 0.2997 -0.23424 2020 1 9 58857 0.0549 0.3008 -0.23458 2020 1 10 58858 0.0537 0.3019 -0.23485 2020 1 11 58859 0.0525 0.3030 -0.23513 2020 1 12 58860 0.0514 0.3041 -0.23550 2020 1 13 58861 0.0502 0.3052 -0.23605 2020 1 14 58862 0.0491 0.3064 -0.23681 2020 1 15 58863 0.0480 0.3075 -0.23777 2020 1 16 58864 0.0469 0.3087 -0.23887 2020 1 17 58865 0.0458 0.3099 -0.24001 2020 1 18 58866 0.0448 0.3111 -0.24108 2020 1 19 58867 0.0437 0.3124 -0.24200 2020 1 20 58868 0.0428 0.3136 -0.24273 2020 1 21 58869 0.0418 0.3149 -0.24327 2020 1 22 58870 0.0408 0.3162 -0.24364 2020 1 23 58871 0.0399 0.3175 -0.24391 2020 1 24 58872 0.0390 0.3188 -0.24415 2020 1 25 58873 0.0381 0.3201 -0.24441 2020 1 26 58874 0.0373 0.3215 -0.24476 2020 1 27 58875 0.0365 0.3228 -0.24521 2020 1 28 58876 0.0357 0.3242 -0.24579 2020 1 29 58877 0.0349 0.3256 -0.24647 2020 1 30 58878 0.0342 0.3270 -0.24723 2020 1 31 58879 0.0335 0.3284 -0.24804 2020 2 1 58880 0.0328 0.3298 -0.24886 2020 2 2 58881 0.0321 0.3312 -0.24964 2020 2 3 58882 0.0315 0.3327 -0.25035 2020 2 4 58883 0.0309 0.3341 -0.25096 2020 2 5 58884 0.0303 0.3356 -0.25149 2020 2 6 58885 0.0298 0.3370 -0.25194 2020 2 7 58886 0.0293 0.3385 -0.25238 2020 2 8 58887 0.0288 0.3400 -0.25289 2020 2 9 58888 0.0283 0.3415 -0.25358 2020 2 10 58889 0.0279 0.3430 -0.25450 2020 2 11 58890 0.0275 0.3445 -0.25567 2020 2 12 58891 0.0271 0.3460 -0.25703 2020 2 13 58892 0.0268 0.3475 -0.25848 2020 2 14 58893 0.0265 0.3490 -0.25988 2020 2 15 58894 0.0262 0.3506 -0.26113 2020 2 16 58895 0.0260 0.3521 -0.26217 2020 2 17 58896 0.0257 0.3536 -0.26300 2020 2 18 58897 0.0256 0.3552 -0.26365 2020 2 19 58898 0.0254 0.3567 -0.26418 2020 2 20 58899 0.0253 0.3583 -0.26466 2020 2 21 58900 0.0252 0.3598 -0.26515 2020 2 22 58901 0.0251 0.3614 -0.26571 2020 2 23 58902 0.0251 0.3629 -0.26638 2020 2 24 58903 0.0251 0.3645 -0.26716 2020 2 25 58904 0.0251 0.3660 -0.26805 2020 2 26 58905 0.0251 0.3676 -0.26902 2020 2 27 58906 0.0252 0.3692 -0.27004 2020 2 28 58907 0.0253 0.3707 -0.27105 2020 2 29 58908 0.0255 0.3723 -0.27201 2020 3 1 58909 0.0257 0.3738 -0.27287 2020 3 2 58910 0.0259 0.3754 -0.27362 2020 3 3 58911 0.0261 0.3769 -0.27424 2020 3 4 58912 0.0264 0.3784 -0.27474 2020 3 5 58913 0.0267 0.3800 -0.27517 2020 3 6 58914 0.0270 0.3815 -0.27561 2020 3 7 58915 0.0274 0.3831 -0.27616 2020 3 8 58916 0.0278 0.3846 -0.27692 2020 3 9 58917 0.0282 0.3861 -0.27796 2020 3 10 58918 0.0287 0.3876 -0.27926 2020 3 11 58919 0.0291 0.3891 -0.28073 2020 3 12 58920 0.0297 0.3906 -0.28224 2020 3 13 58921 0.0302 0.3921 -0.28363 2020 3 14 58922 0.0308 0.3936 -0.28483 2020 3 15 58923 0.0314 0.3951 -0.28578 2020 3 16 58924 0.0320 0.3966 -0.28652 2020 3 17 58925 0.0327 0.3980 -0.28713 2020 3 18 58926 0.0334 0.3995 -0.28767 2020 3 19 58927 0.0341 0.4009 -0.28823 2020 3 20 58928 0.0348 0.4023 -0.28888 2020 3 21 58929 0.0356 0.4038 -0.28967 2020 3 22 58930 0.0364 0.4052 -0.29061 2020 3 23 58931 0.0372 0.4066 -0.29171 2020 3 24 58932 0.0381 0.4079 -0.29295 2020 3 25 58933 0.0390 0.4093 -0.29430 2020 3 26 58934 0.0399 0.4107 -0.29571 2020 3 27 58935 0.0409 0.4120 -0.29713 2020 3 28 58936 0.0418 0.4133 -0.29850 2020 3 29 58937 0.0428 0.4147 -0.29979 2020 3 30 58938 0.0439 0.4160 -0.30097 2020 3 31 58939 0.0449 0.4172 -0.30203 2020 4 1 58940 0.0460 0.4185 -0.30301 2020 4 2 58941 0.0471 0.4198 -0.30398 2020 4 3 58942 0.0482 0.4210 -0.30502 2020 4 4 58943 0.0494 0.4222 -0.30624 2020 4 5 58944 0.0506 0.4234 -0.30773 2020 4 6 58945 0.0518 0.4246 -0.30950 2020 4 7 58946 0.0530 0.4258 -0.31148 2020 4 8 58947 0.0542 0.4269 -0.31351 2020 4 9 58948 0.0555 0.4281 -0.31545 2020 4 10 58949 0.0568 0.4292 -0.31723 2020 4 11 58950 0.0581 0.4303 -0.31875 2020 4 12 58951 0.0595 0.4314 -0.32006 2020 4 13 58952 0.0608 0.4324 -0.32119 2020 4 14 58953 0.0622 0.4334 -0.32218 2020 4 15 58954 0.0636 0.4345 -0.32319 2020 4 16 58955 0.0650 0.4355 -0.32418 2020 4 17 58956 0.0665 0.4364 -0.32520 2020 4 18 58957 0.0680 0.4374 -0.32632 2020 4 19 58958 0.0694 0.4383 -0.32751 2020 4 20 58959 0.0709 0.4392 -0.32877 2020 4 21 58960 0.0725 0.4401 -0.33011 2020 4 22 58961 0.0740 0.4410 -0.33147 2020 4 23 58962 0.0756 0.4418 -0.33278 2020 4 24 58963 0.0772 0.4426 -0.33398 2020 4 25 58964 0.0787 0.4434 -0.33502 2020 4 26 58965 0.0804 0.4442 -0.33589 2020 4 27 58966 0.0820 0.4449 -0.33661 2020 4 28 58967 0.0836 0.4456 -0.33719 2020 4 29 58968 0.0853 0.4463 -0.33767 2020 4 30 58969 0.0870 0.4470 -0.33818 2020 5 1 58970 0.0886 0.4476 -0.33881 2020 5 2 58971 0.0903 0.4482 -0.33962 2020 5 3 58972 0.0921 0.4488 -0.34074 2020 5 4 58973 0.0938 0.4494 -0.34210 2020 5 5 58974 0.0955 0.4499 -0.34365 2020 5 6 58975 0.0973 0.4505 -0.34526 2020 5 7 58976 0.0990 0.4509 -0.34680 2020 5 8 58977 0.1008 0.4514 -0.34812 2020 5 9 58978 0.1026 0.4518 -0.34910 2020 5 10 58979 0.1044 0.4522 -0.34989 2020 5 11 58980 0.1062 0.4526 -0.35050 2020 5 12 58981 0.1080 0.4530 -0.35094 2020 5 13 58982 0.1098 0.4533 -0.35131 2020 5 14 58983 0.1116 0.4536 -0.35171 2020 5 15 58984 0.1134 0.4539 -0.35218 2020 5 16 58985 0.1153 0.4541 -0.35268 2020 5 17 58986 0.1171 0.4543 -0.35323 2020 5 18 58987 0.1190 0.4545 -0.35384 2020 5 19 58988 0.1208 0.4547 -0.35447 2020 5 20 58989 0.1227 0.4548 -0.35506 2020 5 21 58990 0.1245 0.4549 -0.35554 2020 5 22 58991 0.1264 0.4550 -0.35591 2020 5 23 58992 0.1283 0.4551 -0.35618 2020 5 24 58993 0.1301 0.4551 -0.35637 2020 5 25 58994 0.1320 0.4551 -0.35653 2020 5 26 58995 0.1339 0.4550 -0.35661 2020 5 27 58996 0.1358 0.4550 -0.35665 2020 5 28 58997 0.1376 0.4549 -0.35675 2020 5 29 58998 0.1395 0.4548 -0.35700 2020 5 30 58999 0.1414 0.4546 -0.35747 2020 5 31 59000 0.1432 0.4544 -0.35820 2020 6 1 59001 0.1451 0.4542 -0.35910 2020 6 2 59002 0.1470 0.4540 -0.36004 2020 6 3 59003 0.1488 0.4537 -0.36088 2020 6 4 59004 0.1507 0.4534 -0.36153 2020 6 5 59005 0.1525 0.4531 -0.36192 2020 6 6 59006 0.1544 0.4528 -0.36197 2020 6 7 59007 0.1562 0.4524 -0.36177 2020 6 8 59008 0.1580 0.4520 -0.36147 2020 6 9 59009 0.1599 0.4516 -0.36125 2020 6 10 59010 0.1617 0.4511 -0.36113 2020 6 11 59011 0.1635 0.4506 -0.36113 2020 6 12 59012 0.1653 0.4501 -0.36126 2020 6 13 59013 0.1671 0.4496 -0.36153 2020 6 14 59014 0.1689 0.4490 -0.36189 2020 6 15 59015 0.1706 0.4484 -0.36229 2020 6 16 59016 0.1724 0.4478 -0.36269 2020 6 17 59017 0.1741 0.4471 -0.36303 2020 6 18 59018 0.1759 0.4465 -0.36330 2020 6 19 59019 0.1776 0.4458 -0.36345 2020 6 20 59020 0.1793 0.4450 -0.36342 2020 6 21 59021 0.1810 0.4443 -0.36325 2020 6 22 59022 0.1827 0.4435 -0.36298 2020 6 23 59023 0.1844 0.4427 -0.36267 2020 6 24 59024 0.1860 0.4419 -0.36238 2020 6 25 59025 0.1877 0.4410 -0.36221 2020 6 26 59026 0.1893 0.4401 -0.36224 2020 6 27 59027 0.1909 0.4392 -0.36251 2020 6 28 59028 0.1925 0.4383 -0.36295 2020 6 29 59029 0.1941 0.4374 -0.36347 2020 6 30 59030 0.1956 0.4364 -0.36392 2020 7 1 59031 0.1972 0.4354 -0.36424 2020 7 2 59032 0.1987 0.4344 -0.36429 2020 7 3 59033 0.2002 0.4333 -0.36405 2020 7 4 59034 0.2017 0.4322 -0.36358 2020 7 5 59035 0.2032 0.4311 -0.36291 2020 7 6 59036 0.2046 0.4300 -0.36218 2020 7 7 59037 0.2060 0.4289 -0.36144 2020 7 8 59038 0.2074 0.4277 -0.36079 2020 7 9 59039 0.2088 0.4265 -0.36032 2020 7 10 59040 0.2102 0.4253 -0.36002 2020 7 11 59041 0.2115 0.4241 -0.35986 2020 7 12 59042 0.2128 0.4229 -0.35974 2020 7 13 59043 0.2141 0.4216 -0.35966 2020 7 14 59044 0.2153 0.4203 -0.35958 2020 7 15 59045 0.2166 0.4190 -0.35945 2020 7 16 59046 0.2178 0.4177 -0.35921 2020 7 17 59047 0.2190 0.4164 -0.35883 2020 7 18 59048 0.2201 0.4150 -0.35832 2020 7 19 59049 0.2213 0.4136 -0.35771 2020 7 20 59050 0.2224 0.4122 -0.35702 2020 7 21 59051 0.2235 0.4108 -0.35636 2020 7 22 59052 0.2245 0.4094 -0.35581 2020 7 23 59053 0.2256 0.4080 -0.35542 2020 7 24 59054 0.2266 0.4065 -0.35526 2020 7 25 59055 0.2275 0.4050 -0.35531 2020 7 26 59056 0.2285 0.4035 -0.35546 2020 7 27 59057 0.2294 0.4020 -0.35562 2020 7 28 59058 0.2303 0.4005 -0.35571 2020 7 29 59059 0.2311 0.3990 -0.35569 2020 7 30 59060 0.2320 0.3974 -0.35546 2020 7 31 59061 0.2328 0.3959 -0.35505 2020 8 1 59062 0.2335 0.3943 -0.35453 2020 8 2 59063 0.2343 0.3927 -0.35396 2020 8 3 59064 0.2350 0.3911 -0.35344 2020 8 4 59065 0.2357 0.3895 -0.35303 2020 8 5 59066 0.2363 0.3879 -0.35273 2020 8 6 59067 0.2369 0.3863 -0.35259 2020 8 7 59068 0.2375 0.3846 -0.35258 2020 8 8 59069 0.2381 0.3830 -0.35257 2020 8 9 59070 0.2386 0.3813 -0.35259 2020 8 10 59071 0.2391 0.3797 -0.35261 2020 8 11 59072 0.2395 0.3780 -0.35259 2020 8 12 59073 0.2400 0.3763 -0.35247 2020 8 13 59074 0.2404 0.3746 -0.35223 2020 8 14 59075 0.2407 0.3730 -0.35189 2020 8 15 59076 0.2410 0.3713 -0.35143 2020 8 16 59077 0.2413 0.3696 -0.35090 2020 8 17 59078 0.2416 0.3678 -0.35045 2020 8 18 59079 0.2418 0.3661 -0.35013 2020 8 19 59080 0.2420 0.3644 -0.35000 2020 8 20 59081 0.2422 0.3627 -0.35011 2020 8 21 59082 0.2423 0.3610 -0.35046 2020 8 22 59083 0.2424 0.3593 -0.35097 2020 8 23 59084 0.2425 0.3575 -0.35148 2020 8 24 59085 0.2425 0.3558 -0.35193 2020 8 25 59086 0.2425 0.3541 -0.35221 2020 8 26 59087 0.2425 0.3524 -0.35223 2020 8 27 59088 0.2424 0.3506 -0.35209 2020 8 28 59089 0.2423 0.3489 -0.35181 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) 58705 -116.25 0.07 -11.26 0.04 58706 -116.50 0.07 -11.29 0.06 58707 -116.65 0.07 -11.33 0.06 58708 -116.57 0.06 -11.41 0.08 58709 -116.35 0.08 -11.46 0.06 58710 -116.17 0.08 -11.35 0.06 58711 -116.15 0.08 -11.07 0.06 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58705 -0.035 0.028 -0.011 0.040 58706 -0.027 0.026 -0.002 0.061 58707 -0.019 0.026 0.006 0.061 58708 -0.013 0.024 0.011 0.077 58709 -0.009 0.033 0.014 0.058 58710 -0.006 0.033 0.014 0.058 58711 -0.004 0.033 0.012 0.058 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).