********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 5 September 2019 Vol. XXXII No. 036 ______________________________________________________________________ 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 30 58725 0.21532 .00009 0.35436 .00009 -0.152848 0.000013 19 8 31 58726 0.21470 .00009 0.35261 .00009 -0.153119 0.000018 19 9 1 58727 0.21433 .00009 0.35107 .00009 -0.153629 0.000024 19 9 2 58728 0.21412 .00009 0.34974 .00009 -0.154260 0.000023 19 9 3 58729 0.21382 .00009 0.34834 .00009 -0.154820 0.000024 19 9 4 58730 0.21351 .00009 0.34675 .00009 -0.155276 0.000022 19 9 5 58731 0.21332 .00009 0.34512 .00009 -0.155534 0.000021 IERS Final Values MJD x y UT1-UTC " " s 19 7 2 58666 0.1589 0.4196 -0.17382 19 7 3 58667 0.1593 0.4182 -0.17333 19 7 4 58668 0.1598 0.4172 -0.17277 19 7 5 58669 0.1608 0.4161 -0.17230 19 7 6 58670 0.1627 0.4153 -0.17200 19 7 7 58671 0.1651 0.4150 -0.17192 19 7 8 58672 0.1671 0.4148 -0.17192 19 7 9 58673 0.1688 0.4142 -0.17201 19 7 10 58674 0.1707 0.4134 -0.17204 19 7 11 58675 0.1722 0.4124 -0.17201 19 7 12 58676 0.1733 0.4112 -0.17180 19 7 13 58677 0.1745 0.4099 -0.17133 19 7 14 58678 0.1761 0.4086 -0.17068 19 7 15 58679 0.1777 0.4074 -0.16981 19 7 16 58680 0.1793 0.4064 -0.16886 19 7 17 58681 0.1806 0.4060 -0.16794 19 7 18 58682 0.1816 0.4053 -0.16704 19 7 19 58683 0.1825 0.4046 -0.16629 19 7 20 58684 0.1830 0.4036 -0.16563 19 7 21 58685 0.1837 0.4024 -0.16514 19 7 22 58686 0.1845 0.4013 -0.16465 19 7 23 58687 0.1858 0.4003 -0.16422 19 7 24 58688 0.1877 0.3995 -0.16387 19 7 25 58689 0.1896 0.3983 -0.16351 19 7 26 58690 0.1918 0.3968 -0.16318 19 7 27 58691 0.1942 0.3955 -0.16276 19 7 28 58692 0.1966 0.3949 -0.16237 19 7 29 58693 0.1986 0.3947 -0.16184 19 7 30 58694 0.2005 0.3942 -0.16124 19 7 31 58695 0.2026 0.3934 -0.16067 19 8 1 58696 0.2047 0.3923 -0.16023 _______________________________________________________________________ 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 = 0.1172 + 0.1043 cos A + 0.0134 sin A - 0.0093 cos C - 0.0136 sin C y = 0.3446 + 0.0109 cos A - 0.0918 sin A - 0.0136 cos C + 0.0093 sin C UT1-UTC = -0.1747 - 0.00055 (MJD - 58739) - (UT2-UT1) where A = 2*pi*(MJD-58731)/365.25 and C = 2*pi*(MJD-58731)/435. TAI-UTC(MJD 58732) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58731)**0.80 S t = 0.00025 (MJD-58731)**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 9 6 58732 0.2131 0.3436 -0.15558 2019 9 7 58733 0.2130 0.3420 -0.15543 2019 9 8 58734 0.2128 0.3405 -0.15515 2019 9 9 58735 0.2125 0.3390 -0.15479 2019 9 10 58736 0.2123 0.3376 -0.15438 2019 9 11 58737 0.2120 0.3363 -0.15399 2019 9 12 58738 0.2116 0.3349 -0.15366 2019 9 13 58739 0.2112 0.3335 -0.15344 2019 9 14 58740 0.2108 0.3322 -0.15335 2019 9 15 58741 0.2104 0.3308 -0.15341 2019 9 16 58742 0.2100 0.3295 -0.15363 2019 9 17 58743 0.2095 0.3282 -0.15395 2019 9 18 58744 0.2090 0.3269 -0.15429 2019 9 19 58745 0.2085 0.3257 -0.15459 2019 9 20 58746 0.2080 0.3244 -0.15481 2019 9 21 58747 0.2074 0.3232 -0.15493 2019 9 22 58748 0.2068 0.3219 -0.15498 2019 9 23 58749 0.2062 0.3207 -0.15501 2019 9 24 58750 0.2055 0.3194 -0.15510 2019 9 25 58751 0.2048 0.3182 -0.15532 2019 9 26 58752 0.2041 0.3170 -0.15574 2019 9 27 58753 0.2034 0.3158 -0.15643 2019 9 28 58754 0.2026 0.3146 -0.15737 2019 9 29 58755 0.2018 0.3135 -0.15847 2019 9 30 58756 0.2010 0.3123 -0.15960 2019 10 1 58757 0.2001 0.3112 -0.16064 2019 10 2 58758 0.1992 0.3100 -0.16148 2019 10 3 58759 0.1983 0.3089 -0.16211 2019 10 4 58760 0.1974 0.3078 -0.16254 2019 10 5 58761 0.1964 0.3067 -0.16282 2019 10 6 58762 0.1955 0.3056 -0.16303 2019 10 7 58763 0.1945 0.3046 -0.16324 2019 10 8 58764 0.1934 0.3035 -0.16349 2019 10 9 58765 0.1924 0.3025 -0.16384 2019 10 10 58766 0.1913 0.3015 -0.16430 2019 10 11 58767 0.1902 0.3005 -0.16488 2019 10 12 58768 0.1891 0.2995 -0.16557 2019 10 13 58769 0.1880 0.2985 -0.16634 2019 10 14 58770 0.1869 0.2975 -0.16714 2019 10 15 58771 0.1857 0.2966 -0.16794 2019 10 16 58772 0.1845 0.2957 -0.16868 2019 10 17 58773 0.1833 0.2948 -0.16934 2019 10 18 58774 0.1820 0.2939 -0.16988 2019 10 19 58775 0.1808 0.2931 -0.17033 2019 10 20 58776 0.1795 0.2922 -0.17073 2019 10 21 58777 0.1782 0.2914 -0.17113 2019 10 22 58778 0.1769 0.2906 -0.17162 2019 10 23 58779 0.1756 0.2898 -0.17229 2019 10 24 58780 0.1743 0.2890 -0.17319 2019 10 25 58781 0.1729 0.2883 -0.17436 2019 10 26 58782 0.1716 0.2876 -0.17574 2019 10 27 58783 0.1702 0.2869 -0.17722 2019 10 28 58784 0.1688 0.2862 -0.17867 2019 10 29 58785 0.1673 0.2855 -0.17997 2019 10 30 58786 0.1659 0.2849 -0.18104 2019 10 31 58787 0.1645 0.2843 -0.18189 2019 11 1 58788 0.1630 0.2837 -0.18254 2019 11 2 58789 0.1615 0.2831 -0.18308 2019 11 3 58790 0.1600 0.2826 -0.18357 2019 11 4 58791 0.1585 0.2820 -0.18408 2019 11 5 58792 0.1570 0.2815 -0.18467 2019 11 6 58793 0.1555 0.2811 -0.18535 2019 11 7 58794 0.1540 0.2806 -0.18615 2019 11 8 58795 0.1524 0.2802 -0.18706 2019 11 9 58796 0.1509 0.2798 -0.18805 2019 11 10 58797 0.1493 0.2794 -0.18909 2019 11 11 58798 0.1478 0.2790 -0.19013 2019 11 12 58799 0.1462 0.2787 -0.19113 2019 11 13 58800 0.1446 0.2784 -0.19204 2019 11 14 58801 0.1430 0.2781 -0.19283 2019 11 15 58802 0.1414 0.2778 -0.19349 2019 11 16 58803 0.1398 0.2776 -0.19406 2019 11 17 58804 0.1382 0.2774 -0.19459 2019 11 18 58805 0.1365 0.2772 -0.19517 2019 11 19 58806 0.1349 0.2770 -0.19586 2019 11 20 58807 0.1333 0.2769 -0.19673 2019 11 21 58808 0.1316 0.2768 -0.19782 2019 11 22 58809 0.1300 0.2767 -0.19909 2019 11 23 58810 0.1284 0.2766 -0.20048 2019 11 24 58811 0.1267 0.2766 -0.20187 2019 11 25 58812 0.1251 0.2766 -0.20316 2019 11 26 58813 0.1234 0.2766 -0.20425 2019 11 27 58814 0.1218 0.2766 -0.20510 2019 11 28 58815 0.1201 0.2767 -0.20574 2019 11 29 58816 0.1185 0.2768 -0.20621 2019 11 30 58817 0.1168 0.2769 -0.20660 2019 12 1 58818 0.1152 0.2771 -0.20698 2019 12 2 58819 0.1135 0.2772 -0.20739 2019 12 3 58820 0.1119 0.2774 -0.20789 2019 12 4 58821 0.1102 0.2776 -0.20849 2019 12 5 58822 0.1086 0.2779 -0.20920 2019 12 6 58823 0.1070 0.2781 -0.20998 2019 12 7 58824 0.1053 0.2784 -0.21082 2019 12 8 58825 0.1037 0.2788 -0.21167 2019 12 9 58826 0.1021 0.2791 -0.21249 2019 12 10 58827 0.1005 0.2795 -0.21323 2019 12 11 58828 0.0988 0.2799 -0.21385 2019 12 12 58829 0.0972 0.2803 -0.21435 2019 12 13 58830 0.0956 0.2807 -0.21473 2019 12 14 58831 0.0940 0.2812 -0.21505 2019 12 15 58832 0.0925 0.2817 -0.21538 2019 12 16 58833 0.0909 0.2822 -0.21582 2019 12 17 58834 0.0893 0.2827 -0.21641 2019 12 18 58835 0.0878 0.2833 -0.21720 2019 12 19 58836 0.0862 0.2839 -0.21816 2019 12 20 58837 0.0847 0.2845 -0.21924 2019 12 21 58838 0.0832 0.2851 -0.22034 2019 12 22 58839 0.0817 0.2858 -0.22137 2019 12 23 58840 0.0802 0.2865 -0.22221 2019 12 24 58841 0.0787 0.2872 -0.22285 2019 12 25 58842 0.0772 0.2879 -0.22329 2019 12 26 58843 0.0757 0.2887 -0.22357 2019 12 27 58844 0.0743 0.2894 -0.22374 2019 12 28 58845 0.0728 0.2902 -0.22389 2019 12 29 58846 0.0714 0.2910 -0.22408 2019 12 30 58847 0.0700 0.2919 -0.22434 2019 12 31 58848 0.0686 0.2927 -0.22470 2020 1 1 58849 0.0673 0.2936 -0.22517 2020 1 2 58850 0.0659 0.2945 -0.22574 2020 1 3 58851 0.0646 0.2955 -0.22638 2020 1 4 58852 0.0633 0.2964 -0.22704 2020 1 5 58853 0.0619 0.2974 -0.22770 2020 1 6 58854 0.0607 0.2984 -0.22830 2020 1 7 58855 0.0594 0.2994 -0.22882 2020 1 8 58856 0.0582 0.3004 -0.22924 2020 1 9 58857 0.0569 0.3014 -0.22954 2020 1 10 58858 0.0557 0.3025 -0.22978 2020 1 11 58859 0.0545 0.3036 -0.23003 2020 1 12 58860 0.0534 0.3047 -0.23037 2020 1 13 58861 0.0522 0.3058 -0.23088 2020 1 14 58862 0.0511 0.3069 -0.23161 2020 1 15 58863 0.0500 0.3081 -0.23254 2020 1 16 58864 0.0489 0.3093 -0.23361 2020 1 17 58865 0.0478 0.3105 -0.23472 2020 1 18 58866 0.0468 0.3117 -0.23576 2020 1 19 58867 0.0458 0.3129 -0.23666 2020 1 20 58868 0.0448 0.3141 -0.23737 2020 1 21 58869 0.0438 0.3154 -0.23788 2020 1 22 58870 0.0429 0.3166 -0.23824 2020 1 23 58871 0.0420 0.3179 -0.23849 2020 1 24 58872 0.0411 0.3192 -0.23871 2020 1 25 58873 0.0402 0.3205 -0.23896 2020 1 26 58874 0.0394 0.3218 -0.23929 2020 1 27 58875 0.0386 0.3232 -0.23973 2020 1 28 58876 0.0378 0.3245 -0.24029 2020 1 29 58877 0.0370 0.3259 -0.24096 2020 1 30 58878 0.0363 0.3273 -0.24171 2020 1 31 58879 0.0356 0.3287 -0.24250 2020 2 1 58880 0.0349 0.3300 -0.24330 2020 2 2 58881 0.0342 0.3315 -0.24406 2020 2 3 58882 0.0336 0.3329 -0.24475 2020 2 4 58883 0.0330 0.3343 -0.24535 2020 2 5 58884 0.0324 0.3357 -0.24585 2020 2 6 58885 0.0319 0.3372 -0.24628 2020 2 7 58886 0.0314 0.3386 -0.24670 2020 2 8 58887 0.0309 0.3401 -0.24720 2020 2 9 58888 0.0304 0.3416 -0.24786 2020 2 10 58889 0.0300 0.3431 -0.24877 2020 2 11 58890 0.0296 0.3445 -0.24992 2020 2 12 58891 0.0292 0.3460 -0.25127 2020 2 13 58892 0.0289 0.3475 -0.25270 2020 2 14 58893 0.0286 0.3490 -0.25409 2020 2 15 58894 0.0283 0.3505 -0.25533 2020 2 16 58895 0.0280 0.3520 -0.25637 2020 2 17 58896 0.0278 0.3536 -0.25719 2020 2 18 58897 0.0276 0.3551 -0.25783 2020 2 19 58898 0.0274 0.3566 -0.25836 2020 2 20 58899 0.0273 0.3581 -0.25884 2020 2 21 58900 0.0272 0.3597 -0.25933 2020 2 22 58901 0.0271 0.3612 -0.25990 2020 2 23 58902 0.0271 0.3627 -0.26058 2020 2 24 58903 0.0271 0.3643 -0.26138 2020 2 25 58904 0.0271 0.3658 -0.26229 2020 2 26 58905 0.0271 0.3673 -0.26330 2020 2 27 58906 0.0272 0.3689 -0.26436 2020 2 28 58907 0.0273 0.3704 -0.26543 2020 2 29 58908 0.0275 0.3719 -0.26647 2020 3 1 58909 0.0276 0.3735 -0.26743 2020 3 2 58910 0.0278 0.3750 -0.26830 2020 3 3 58911 0.0280 0.3765 -0.26907 2020 3 4 58912 0.0283 0.3780 -0.26974 2020 3 5 58913 0.0286 0.3796 -0.27037 2020 3 6 58914 0.0289 0.3811 -0.27101 2020 3 7 58915 0.0293 0.3826 -0.27178 2020 3 8 58916 0.0296 0.3841 -0.27275 2020 3 9 58917 0.0301 0.3856 -0.27398 2020 3 10 58918 0.0305 0.3871 -0.27543 2020 3 11 58919 0.0310 0.3886 -0.27700 2020 3 12 58920 0.0315 0.3900 -0.27857 2020 3 13 58921 0.0320 0.3915 -0.27998 2020 3 14 58922 0.0325 0.3930 -0.28115 2020 3 15 58923 0.0331 0.3944 -0.28206 2020 3 16 58924 0.0338 0.3959 -0.28274 2020 3 17 58925 0.0344 0.3973 -0.28327 2020 3 18 58926 0.0351 0.3988 -0.28373 2020 3 19 58927 0.0358 0.4002 -0.28421 2020 3 20 58928 0.0365 0.4016 -0.28475 2020 3 21 58929 0.0373 0.4030 -0.28540 2020 3 22 58930 0.0381 0.4044 -0.28618 2020 3 23 58931 0.0389 0.4058 -0.28706 2020 3 24 58932 0.0397 0.4071 -0.28805 2020 3 25 58933 0.0406 0.4085 -0.28909 2020 3 26 58934 0.0415 0.4098 -0.29016 2020 3 27 58935 0.0424 0.4111 -0.29120 2020 3 28 58936 0.0434 0.4125 -0.29217 2020 3 29 58937 0.0443 0.4138 -0.29306 2020 3 30 58938 0.0453 0.4150 -0.29384 2020 3 31 58939 0.0464 0.4163 -0.29455 2020 4 1 58940 0.0474 0.4176 -0.29521 2020 4 2 58941 0.0485 0.4188 -0.29589 2020 4 3 58942 0.0496 0.4200 -0.29669 2020 4 4 58943 0.0508 0.4212 -0.29770 2020 4 5 58944 0.0519 0.4224 -0.29901 2020 4 6 58945 0.0531 0.4236 -0.30063 2020 4 7 58946 0.0543 0.4247 -0.30252 2020 4 8 58947 0.0555 0.4259 -0.30455 2020 4 9 58948 0.0568 0.4270 -0.30656 2020 4 10 58949 0.0581 0.4281 -0.30843 2020 4 11 58950 0.0593 0.4292 -0.31005 2020 4 12 58951 0.0607 0.4302 -0.31141 2020 4 13 58952 0.0620 0.4313 -0.31253 2020 4 14 58953 0.0634 0.4323 -0.31350 2020 4 15 58954 0.0648 0.4333 -0.31441 2020 4 16 58955 0.0662 0.4343 -0.31533 2020 4 17 58956 0.0676 0.4352 -0.31633 2020 4 18 58957 0.0690 0.4362 -0.31742 2020 4 19 58958 0.0705 0.4371 -0.31864 2020 4 20 58959 0.0720 0.4380 -0.31995 2020 4 21 58960 0.0735 0.4388 -0.32132 2020 4 22 58961 0.0750 0.4397 -0.32263 2020 4 23 58962 0.0765 0.4405 -0.32387 2020 4 24 58963 0.0781 0.4413 -0.32505 2020 4 25 58964 0.0796 0.4421 -0.32613 2020 4 26 58965 0.0812 0.4429 -0.32712 2020 4 27 58966 0.0828 0.4436 -0.32801 2020 4 28 58967 0.0845 0.4443 -0.32881 2020 4 29 58968 0.0861 0.4450 -0.32962 2020 4 30 58969 0.0877 0.4456 -0.33042 2020 5 1 58970 0.0894 0.4463 -0.33131 2020 5 2 58971 0.0911 0.4469 -0.33238 2020 5 3 58972 0.0928 0.4475 -0.33368 2020 5 4 58973 0.0945 0.4480 -0.33519 2020 5 5 58974 0.0962 0.4485 -0.33688 2020 5 6 58975 0.0979 0.4491 -0.33861 2020 5 7 58976 0.0996 0.4495 -0.34019 2020 5 8 58977 0.1014 0.4500 -0.34152 2020 5 9 58978 0.1031 0.4504 -0.34253 2020 5 10 58979 0.1049 0.4508 -0.34325 2020 5 11 58980 0.1067 0.4512 -0.34377 2020 5 12 58981 0.1085 0.4515 -0.34415 2020 5 13 58982 0.1102 0.4519 -0.34447 2020 5 14 58983 0.1120 0.4522 -0.34483 2020 5 15 58984 0.1139 0.4524 -0.34528 2020 5 16 58985 0.1157 0.4527 -0.34580 2020 5 17 58986 0.1175 0.4529 -0.34647 2020 5 18 58987 0.1193 0.4531 -0.34720 2020 5 19 58988 0.1211 0.4532 -0.34798 2020 5 20 58989 0.1230 0.4534 -0.34877 2020 5 21 58990 0.1248 0.4535 -0.34953 2020 5 22 58991 0.1266 0.4535 -0.35017 2020 5 23 58992 0.1285 0.4536 -0.35062 2020 5 24 58993 0.1303 0.4536 -0.35098 2020 5 25 58994 0.1322 0.4536 -0.35123 2020 5 26 58995 0.1340 0.4536 -0.35133 2020 5 27 58996 0.1359 0.4535 -0.35137 2020 5 28 58997 0.1377 0.4534 -0.35148 2020 5 29 58998 0.1396 0.4533 -0.35173 2020 5 30 58999 0.1414 0.4531 -0.35212 2020 5 31 59000 0.1433 0.4530 -0.35270 2020 6 1 59001 0.1451 0.4528 -0.35344 2020 6 2 59002 0.1469 0.4525 -0.35427 2020 6 3 59003 0.1488 0.4523 -0.35502 2020 6 4 59004 0.1506 0.4520 -0.35557 2020 6 5 59005 0.1524 0.4517 -0.35589 2020 6 6 59006 0.1542 0.4513 -0.35598 2020 6 7 59007 0.1561 0.4509 -0.35593 2020 6 8 59008 0.1579 0.4505 -0.35585 2020 6 9 59009 0.1597 0.4501 -0.35572 2020 6 10 59010 0.1615 0.4497 -0.35559 2020 6 11 59011 0.1633 0.4492 -0.35550 2020 6 12 59012 0.1650 0.4487 -0.35551 2020 6 13 59013 0.1668 0.4482 -0.35562 2020 6 14 59014 0.1686 0.4476 -0.35584 2020 6 15 59015 0.1703 0.4470 -0.35609 2020 6 16 59016 0.1721 0.4464 -0.35629 2020 6 17 59017 0.1738 0.4457 -0.35639 2020 6 18 59018 0.1755 0.4451 -0.35638 2020 6 19 59019 0.1772 0.4444 -0.35621 2020 6 20 59020 0.1789 0.4437 -0.35582 2020 6 21 59021 0.1806 0.4429 -0.35527 2020 6 22 59022 0.1823 0.4422 -0.35466 2020 6 23 59023 0.1839 0.4414 -0.35415 2020 6 24 59024 0.1856 0.4405 -0.35378 2020 6 25 59025 0.1872 0.4397 -0.35360 2020 6 26 59026 0.1888 0.4388 -0.35367 2020 6 27 59027 0.1904 0.4379 -0.35398 2020 6 28 59028 0.1920 0.4370 -0.35449 2020 6 29 59029 0.1936 0.4361 -0.35508 2020 6 30 59030 0.1951 0.4351 -0.35568 2020 7 1 59031 0.1966 0.4341 -0.35615 2020 7 2 59032 0.1981 0.4331 -0.35644 2020 7 3 59033 0.1996 0.4321 -0.35651 2020 7 4 59034 0.2011 0.4310 -0.35634 2020 7 5 59035 0.2025 0.4299 -0.35602 2020 7 6 59036 0.2040 0.4288 -0.35563 2020 7 7 59037 0.2054 0.4277 -0.35525 2020 7 8 59038 0.2068 0.4266 -0.35490 2020 7 9 59039 0.2081 0.4254 -0.35461 2020 7 10 59040 0.2095 0.4242 -0.35445 2020 7 11 59041 0.2108 0.4230 -0.35440 2020 7 12 59042 0.2121 0.4218 -0.35441 2020 7 13 59043 0.2134 0.4205 -0.35443 2020 7 14 59044 0.2146 0.4193 -0.35436 2020 7 15 59045 0.2159 0.4180 -0.35421 2020 7 16 59046 0.2171 0.4167 -0.35388 2020 7 17 59047 0.2182 0.4153 -0.35338 2020 7 18 59048 0.2194 0.4140 -0.35274 2020 7 19 59049 0.2205 0.4126 -0.35194 2020 7 20 59050 0.2216 0.4113 -0.35112 2020 7 21 59051 0.2227 0.4099 -0.35033 2020 7 22 59052 0.2237 0.4085 -0.34970 2020 7 23 59053 0.2248 0.4070 -0.34935 2020 7 24 59054 0.2258 0.4056 -0.34931 2020 7 25 59055 0.2267 0.4041 -0.34950 2020 7 26 59056 0.2277 0.4027 -0.34980 2020 7 27 59057 0.2286 0.4012 -0.35012 2020 7 28 59058 0.2295 0.3997 -0.35037 2020 7 29 59059 0.2303 0.3982 -0.35047 2020 7 30 59060 0.2312 0.3966 -0.35035 2020 7 31 59061 0.2320 0.3951 -0.35002 2020 8 1 59062 0.2327 0.3936 -0.34954 2020 8 2 59063 0.2335 0.3920 -0.34898 2020 8 3 59064 0.2342 0.3904 -0.34841 2020 8 4 59065 0.2348 0.3888 -0.34787 2020 8 5 59066 0.2355 0.3872 -0.34742 2020 8 6 59067 0.2361 0.3856 -0.34705 2020 8 7 59068 0.2367 0.3840 -0.34678 2020 8 8 59069 0.2372 0.3824 -0.34661 2020 8 9 59070 0.2378 0.3808 -0.34647 2020 8 10 59071 0.2383 0.3791 -0.34632 2020 8 11 59072 0.2387 0.3775 -0.34616 2020 8 12 59073 0.2392 0.3758 -0.34599 2020 8 13 59074 0.2395 0.3742 -0.34571 2020 8 14 59075 0.2399 0.3725 -0.34536 2020 8 15 59076 0.2402 0.3708 -0.34493 2020 8 16 59077 0.2405 0.3691 -0.34449 2020 8 17 59078 0.2408 0.3674 -0.34412 2020 8 18 59079 0.2410 0.3658 -0.34392 2020 8 19 59080 0.2412 0.3641 -0.34393 2020 8 20 59081 0.2414 0.3624 -0.34424 2020 8 21 59082 0.2415 0.3607 -0.34482 2020 8 22 59083 0.2416 0.3590 -0.34549 2020 8 23 59084 0.2417 0.3573 -0.34619 2020 8 24 59085 0.2418 0.3556 -0.34681 2020 8 25 59086 0.2418 0.3539 -0.34726 2020 8 26 59087 0.2417 0.3522 -0.34748 2020 8 27 59088 0.2417 0.3505 -0.34747 2020 8 28 59089 0.2416 0.3488 -0.34731 2020 8 29 59090 0.2414 0.3471 -0.34706 2020 8 30 59091 0.2413 0.3454 -0.34678 2020 8 31 59092 0.2411 0.3437 -0.34662 2020 9 1 59093 0.2408 0.3420 -0.34658 2020 9 2 59094 0.2406 0.3403 -0.34664 2020 9 3 59095 0.2403 0.3386 -0.34679 2020 9 4 59096 0.2399 0.3369 -0.34704 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) 58712 -116.25 0.10 -10.83 0.03 58713 -116.41 0.12 -10.73 0.03 58714 -116.43 0.12 -10.77 0.03 58715 -116.24 0.16 -10.80 0.05 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 58666 -111.2 -11.2 58667 -111.3 -11.4 58668 -111.2 -11.4 58669 -111.1 -11.2 58670 -111.1 -11.0 58671 -111.1 -11.0 58672 -111.3 -11.0 58673 -111.5 -11.1 58674 -111.7 -11.1 58675 -111.9 -11.1 58676 -112.3 -11.0 58677 -112.8 -11.0 58678 -113.1 -11.0 58679 -113.1 -11.1 58680 -112.9 -11.3 58681 -112.7 -11.3 58682 -112.6 -11.3 58683 -112.7 -11.2 58684 -113.0 -11.1 58685 -113.4 -11.1 58686 -113.6 -11.2 58687 -113.6 -11.3 58688 -113.7 -11.1 58689 -114.1 -11.0 58690 -114.9 -10.9 58691 -115.5 -10.9 58692 -115.7 -10.8 58693 -115.6 -10.9 58694 -115.4 -11.1 58695 -115.4 -11.3 58696 -115.3 -11.4 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58712 0.016 0.041 -0.006 0.028 58713 0.025 0.048 -0.014 0.034 58714 0.035 0.048 -0.023 0.034 58715 0.044 0.063 -0.032 0.047 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 58666 -0.05 -0.32 58667 -0.06 -0.28 58668 -0.08 -0.24 58669 -0.09 -0.19 58670 -0.09 -0.17 58671 -0.08 -0.17 58672 -0.08 -0.17 58673 -0.07 -0.16 58674 -0.09 -0.14 58675 -0.12 -0.12 58676 -0.15 -0.10 58677 -0.14 -0.10 58678 -0.13 -0.10 58679 -0.11 -0.10 58680 -0.09 -0.10 58681 -0.06 -0.08 58682 -0.03 -0.06 58683 0.00 -0.07 58684 -0.01 -0.10 58685 -0.02 -0.16 58686 -0.05 -0.22 58687 -0.07 -0.28 58688 -0.07 -0.24 58689 -0.07 -0.18 58690 -0.06 -0.11 58691 -0.05 -0.10 58692 -0.03 -0.10 58693 -0.01 -0.10 58694 0.01 -0.10 58695 -0.01 -0.08 58696 -0.04 -0.05 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).