********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 21 February 2019 Vol. XXXII No. 008 ______________________________________________________________________ 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 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 2 15 58529 0.03535 .00009 0.32460 .00009 -0.073958 0.000016 19 2 16 58530 0.03505 .00009 0.32556 .00009 -0.074945 0.000019 19 2 17 58531 0.03550 .00009 0.32702 .00009 -0.075913 0.000018 19 2 18 58532 0.03634 .00009 0.32878 .00009 -0.076934 0.000016 19 2 19 58533 0.03708 .00009 0.33065 .00009 -0.078100 0.000018 19 2 20 58534 0.03739 .00010 0.33246 .00009 -0.079442 0.000018 19 2 21 58535 0.03733 .00009 0.33420 .00009 -0.080946 0.000017 _______________________________________________________________________ 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 = 0.1236 - 0.1001 cos A + 0.0065 sin A + 0.0224 cos C - 0.0271 sin C y = 0.3557 + 0.0063 cos A + 0.0903 sin A - 0.0271 cos C - 0.0224 sin C UT1-UTC = -0.0920 - 0.00066 (MJD - 58543) - (UT2-UT1) where A = 2*pi*(MJD-58535)/365.25 and C = 2*pi*(MJD-58535)/435. TAI-UTC(MJD 58536) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58535)**0.80 S t = 0.00025 (MJD-58535)**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 2 22 58536 0.0371 0.3358 -0.08256 2019 2 23 58537 0.0370 0.3374 -0.08415 2019 2 24 58538 0.0369 0.3388 -0.08559 2019 2 25 58539 0.0368 0.3402 -0.08682 2019 2 26 58540 0.0369 0.3417 -0.08784 2019 2 27 58541 0.0369 0.3433 -0.08867 2019 2 28 58542 0.0369 0.3450 -0.08934 2019 3 1 58543 0.0370 0.3465 -0.08991 2019 3 2 58544 0.0369 0.3480 -0.09045 2019 3 3 58545 0.0368 0.3495 -0.09103 2019 3 4 58546 0.0367 0.3508 -0.09170 2019 3 5 58547 0.0366 0.3522 -0.09251 2019 3 6 58548 0.0366 0.3536 -0.09346 2019 3 7 58549 0.0366 0.3550 -0.09457 2019 3 8 58550 0.0367 0.3564 -0.09583 2019 3 9 58551 0.0368 0.3578 -0.09719 2019 3 10 58552 0.0370 0.3591 -0.09861 2019 3 11 58553 0.0373 0.3605 -0.10003 2019 3 12 58554 0.0375 0.3618 -0.10139 2019 3 13 58555 0.0378 0.3632 -0.10267 2019 3 14 58556 0.0381 0.3645 -0.10387 2019 3 15 58557 0.0385 0.3658 -0.10499 2019 3 16 58558 0.0388 0.3672 -0.10609 2019 3 17 58559 0.0392 0.3685 -0.10726 2019 3 18 58560 0.0397 0.3699 -0.10858 2019 3 19 58561 0.0401 0.3712 -0.11012 2019 3 20 58562 0.0406 0.3725 -0.11188 2019 3 21 58563 0.0412 0.3739 -0.11380 2019 3 22 58564 0.0417 0.3752 -0.11579 2019 3 23 58565 0.0422 0.3765 -0.11771 2019 3 24 58566 0.0428 0.3778 -0.11947 2019 3 25 58567 0.0434 0.3791 -0.12100 2019 3 26 58568 0.0440 0.3804 -0.12231 2019 3 27 58569 0.0447 0.3817 -0.12343 2019 3 28 58570 0.0453 0.3830 -0.12442 2019 3 29 58571 0.0460 0.3842 -0.12535 2019 3 30 58572 0.0468 0.3855 -0.12626 2019 3 31 58573 0.0475 0.3867 -0.12722 2019 4 1 58574 0.0483 0.3880 -0.12825 2019 4 2 58575 0.0491 0.3892 -0.12938 2019 4 3 58576 0.0499 0.3904 -0.13061 2019 4 4 58577 0.0507 0.3916 -0.13194 2019 4 5 58578 0.0516 0.3927 -0.13334 2019 4 6 58579 0.0525 0.3939 -0.13477 2019 4 7 58580 0.0534 0.3950 -0.13618 2019 4 8 58581 0.0544 0.3962 -0.13752 2019 4 9 58582 0.0553 0.3973 -0.13876 2019 4 10 58583 0.0563 0.3984 -0.13987 2019 4 11 58584 0.0573 0.3995 -0.14088 2019 4 12 58585 0.0584 0.4006 -0.14184 2019 4 13 58586 0.0594 0.4016 -0.14279 2019 4 14 58587 0.0605 0.4027 -0.14384 2019 4 15 58588 0.0616 0.4037 -0.14505 2019 4 16 58589 0.0627 0.4047 -0.14647 2019 4 17 58590 0.0639 0.4057 -0.14807 2019 4 18 58591 0.0650 0.4067 -0.14980 2019 4 19 58592 0.0662 0.4077 -0.15154 2019 4 20 58593 0.0674 0.4086 -0.15317 2019 4 21 58594 0.0687 0.4095 -0.15462 2019 4 22 58595 0.0699 0.4105 -0.15585 2019 4 23 58596 0.0712 0.4113 -0.15686 2019 4 24 58597 0.0724 0.4122 -0.15772 2019 4 25 58598 0.0737 0.4131 -0.15846 2019 4 26 58599 0.0750 0.4139 -0.15916 2019 4 27 58600 0.0764 0.4147 -0.15986 2019 4 28 58601 0.0777 0.4155 -0.16062 2019 4 29 58602 0.0791 0.4163 -0.16145 2019 4 30 58603 0.0805 0.4170 -0.16238 2019 5 1 58604 0.0819 0.4178 -0.16341 2019 5 2 58605 0.0833 0.4185 -0.16453 2019 5 3 58606 0.0847 0.4192 -0.16568 2019 5 4 58607 0.0861 0.4198 -0.16684 2019 5 5 58608 0.0876 0.4205 -0.16793 2019 5 6 58609 0.0890 0.4211 -0.16891 2019 5 7 58610 0.0905 0.4217 -0.16974 2019 5 8 58611 0.0920 0.4223 -0.17044 2019 5 9 58612 0.0935 0.4228 -0.17104 2019 5 10 58613 0.0950 0.4234 -0.17162 2019 5 11 58614 0.0966 0.4239 -0.17225 2019 5 12 58615 0.0981 0.4244 -0.17301 2019 5 13 58616 0.0996 0.4248 -0.17393 2019 5 14 58617 0.1012 0.4253 -0.17502 2019 5 15 58618 0.1028 0.4257 -0.17623 2019 5 16 58619 0.1043 0.4261 -0.17747 2019 5 17 58620 0.1059 0.4265 -0.17865 2019 5 18 58621 0.1075 0.4268 -0.17967 2019 5 19 58622 0.1091 0.4271 -0.18048 2019 5 20 58623 0.1107 0.4274 -0.18107 2019 5 21 58624 0.1123 0.4277 -0.18147 2019 5 22 58625 0.1140 0.4280 -0.18173 2019 5 23 58626 0.1156 0.4282 -0.18190 2019 5 24 58627 0.1172 0.4284 -0.18206 2019 5 25 58628 0.1188 0.4286 -0.18224 2019 5 26 58629 0.1205 0.4287 -0.18250 2019 5 27 58630 0.1221 0.4288 -0.18286 2019 5 28 58631 0.1238 0.4289 -0.18330 2019 5 29 58632 0.1254 0.4290 -0.18383 2019 5 30 58633 0.1271 0.4291 -0.18440 2019 5 31 58634 0.1287 0.4291 -0.18499 2019 6 1 58635 0.1304 0.4291 -0.18553 2019 6 2 58636 0.1320 0.4291 -0.18599 2019 6 3 58637 0.1337 0.4290 -0.18633 2019 6 4 58638 0.1353 0.4289 -0.18652 2019 6 5 58639 0.1369 0.4288 -0.18660 2019 6 6 58640 0.1386 0.4287 -0.18663 2019 6 7 58641 0.1402 0.4286 -0.18670 2019 6 8 58642 0.1419 0.4284 -0.18688 2019 6 9 58643 0.1435 0.4282 -0.18721 2019 6 10 58644 0.1452 0.4279 -0.18773 2019 6 11 58645 0.1468 0.4277 -0.18835 2019 6 12 58646 0.1484 0.4274 -0.18903 2019 6 13 58647 0.1500 0.4271 -0.18966 2019 6 14 58648 0.1516 0.4268 -0.19016 2019 6 15 58649 0.1533 0.4264 -0.19049 2019 6 16 58650 0.1549 0.4261 -0.19061 2019 6 17 58651 0.1564 0.4257 -0.19054 2019 6 18 58652 0.1580 0.4252 -0.19033 2019 6 19 58653 0.1596 0.4248 -0.19003 2019 6 20 58654 0.1612 0.4243 -0.18970 2019 6 21 58655 0.1627 0.4238 -0.18939 2019 6 22 58656 0.1643 0.4233 -0.18915 2019 6 23 58657 0.1658 0.4227 -0.18900 2019 6 24 58658 0.1674 0.4222 -0.18895 2019 6 25 58659 0.1689 0.4216 -0.18899 2019 6 26 58660 0.1704 0.4210 -0.18910 2019 6 27 58661 0.1719 0.4203 -0.18925 2019 6 28 58662 0.1734 0.4197 -0.18938 2019 6 29 58663 0.1749 0.4190 -0.18946 2019 6 30 58664 0.1763 0.4183 -0.18945 2019 7 1 58665 0.1778 0.4175 -0.18931 2019 7 2 58666 0.1792 0.4168 -0.18907 2019 7 3 58667 0.1806 0.4160 -0.18875 2019 7 4 58668 0.1820 0.4152 -0.18846 2019 7 5 58669 0.1834 0.4144 -0.18828 2019 7 6 58670 0.1848 0.4136 -0.18827 2019 7 7 58671 0.1861 0.4127 -0.18843 2019 7 8 58672 0.1874 0.4118 -0.18873 2019 7 9 58673 0.1888 0.4109 -0.18909 2019 7 10 58674 0.1901 0.4100 -0.18941 2019 7 11 58675 0.1913 0.4090 -0.18962 2019 7 12 58676 0.1926 0.4081 -0.18967 2019 7 13 58677 0.1939 0.4071 -0.18952 2019 7 14 58678 0.1951 0.4061 -0.18920 2019 7 15 58679 0.1963 0.4051 -0.18873 2019 7 16 58680 0.1975 0.4040 -0.18818 2019 7 17 58681 0.1986 0.4030 -0.18760 2019 7 18 58682 0.1998 0.4019 -0.18704 2019 7 19 58683 0.2009 0.4008 -0.18654 2019 7 20 58684 0.2020 0.3997 -0.18614 2019 7 21 58685 0.2031 0.3986 -0.18586 2019 7 22 58686 0.2041 0.3974 -0.18567 2019 7 23 58687 0.2052 0.3963 -0.18557 2019 7 24 58688 0.2062 0.3951 -0.18552 2019 7 25 58689 0.2072 0.3939 -0.18549 2019 7 26 58690 0.2081 0.3927 -0.18543 2019 7 27 58691 0.2091 0.3915 -0.18530 2019 7 28 58692 0.2100 0.3902 -0.18508 2019 7 29 58693 0.2109 0.3890 -0.18477 2019 7 30 58694 0.2118 0.3877 -0.18440 2019 7 31 58695 0.2126 0.3864 -0.18403 2019 8 1 58696 0.2134 0.3851 -0.18376 2019 8 2 58697 0.2142 0.3838 -0.18367 2019 8 3 58698 0.2150 0.3825 -0.18381 2019 8 4 58699 0.2157 0.3812 -0.18414 2019 8 5 58700 0.2164 0.3798 -0.18458 2019 8 6 58701 0.2171 0.3785 -0.18503 2019 8 7 58702 0.2178 0.3771 -0.18538 2019 8 8 58703 0.2184 0.3757 -0.18556 2019 8 9 58704 0.2190 0.3743 -0.18554 2019 8 10 58705 0.2196 0.3729 -0.18535 2019 8 11 58706 0.2201 0.3715 -0.18501 2019 8 12 58707 0.2207 0.3701 -0.18459 2019 8 13 58708 0.2211 0.3687 -0.18414 2019 8 14 58709 0.2216 0.3673 -0.18373 2019 8 15 58710 0.2220 0.3658 -0.18338 2019 8 16 58711 0.2225 0.3644 -0.18314 2019 8 17 58712 0.2228 0.3629 -0.18302 2019 8 18 58713 0.2232 0.3615 -0.18302 2019 8 19 58714 0.2235 0.3600 -0.18312 2019 8 20 58715 0.2238 0.3586 -0.18328 2019 8 21 58716 0.2241 0.3571 -0.18346 2019 8 22 58717 0.2243 0.3556 -0.18361 2019 8 23 58718 0.2245 0.3541 -0.18371 2019 8 24 58719 0.2247 0.3526 -0.18371 2019 8 25 58720 0.2248 0.3512 -0.18362 2019 8 26 58721 0.2249 0.3497 -0.18344 2019 8 27 58722 0.2250 0.3482 -0.18322 2019 8 28 58723 0.2251 0.3467 -0.18305 2019 8 29 58724 0.2251 0.3452 -0.18302 2019 8 30 58725 0.2251 0.3437 -0.18321 2019 8 31 58726 0.2251 0.3422 -0.18363 2019 9 1 58727 0.2250 0.3407 -0.18423 2019 9 2 58728 0.2249 0.3392 -0.18490 2019 9 3 58729 0.2248 0.3377 -0.18552 2019 9 4 58730 0.2247 0.3362 -0.18600 2019 9 5 58731 0.2245 0.3347 -0.18628 2019 9 6 58732 0.2243 0.3332 -0.18638 2019 9 7 58733 0.2240 0.3318 -0.18634 2019 9 8 58734 0.2237 0.3303 -0.18622 2019 9 9 58735 0.2234 0.3288 -0.18611 2019 9 10 58736 0.2231 0.3273 -0.18605 2019 9 11 58737 0.2228 0.3258 -0.18610 2019 9 12 58738 0.2224 0.3244 -0.18629 2019 9 13 58739 0.2219 0.3229 -0.18665 2019 9 14 58740 0.2215 0.3215 -0.18716 2019 9 15 58741 0.2210 0.3200 -0.18781 2019 9 16 58742 0.2205 0.3186 -0.18857 2019 9 17 58743 0.2200 0.3172 -0.18938 2019 9 18 58744 0.2194 0.3157 -0.19019 2019 9 19 58745 0.2188 0.3143 -0.19098 2019 9 20 58746 0.2182 0.3129 -0.19170 2019 9 21 58747 0.2176 0.3115 -0.19235 2019 9 22 58748 0.2169 0.3101 -0.19293 2019 9 23 58749 0.2162 0.3087 -0.19346 2019 9 24 58750 0.2154 0.3074 -0.19403 2019 9 25 58751 0.2147 0.3060 -0.19473 2019 9 26 58752 0.2139 0.3047 -0.19566 2019 9 27 58753 0.2131 0.3033 -0.19687 2019 9 28 58754 0.2122 0.3020 -0.19835 2019 9 29 58755 0.2114 0.3007 -0.19999 2019 9 30 58756 0.2105 0.2994 -0.20166 2019 10 1 58757 0.2096 0.2981 -0.20323 2019 10 2 58758 0.2086 0.2969 -0.20465 2019 10 3 58759 0.2076 0.2956 -0.20590 2019 10 4 58760 0.2066 0.2944 -0.20701 2019 10 5 58761 0.2056 0.2931 -0.20798 2019 10 6 58762 0.2046 0.2919 -0.20883 2019 10 7 58763 0.2035 0.2907 -0.20966 2019 10 8 58764 0.2024 0.2896 -0.21048 2019 10 9 58765 0.2013 0.2884 -0.21136 2019 10 10 58766 0.2002 0.2873 -0.21235 2019 10 11 58767 0.1990 0.2861 -0.21348 2019 10 12 58768 0.1978 0.2850 -0.21475 2019 10 13 58769 0.1966 0.2839 -0.21610 2019 10 14 58770 0.1954 0.2829 -0.21747 2019 10 15 58771 0.1941 0.2818 -0.21877 2019 10 16 58772 0.1928 0.2808 -0.21997 2019 10 17 58773 0.1915 0.2798 -0.22105 2019 10 18 58774 0.1902 0.2788 -0.22202 2019 10 19 58775 0.1889 0.2778 -0.22290 2019 10 20 58776 0.1875 0.2768 -0.22377 2019 10 21 58777 0.1861 0.2759 -0.22462 2019 10 22 58778 0.1847 0.2750 -0.22548 2019 10 23 58779 0.1833 0.2741 -0.22643 2019 10 24 58780 0.1819 0.2732 -0.22753 2019 10 25 58781 0.1804 0.2724 -0.22882 2019 10 26 58782 0.1790 0.2715 -0.23025 2019 10 27 58783 0.1775 0.2707 -0.23169 2019 10 28 58784 0.1760 0.2699 -0.23308 2019 10 29 58785 0.1745 0.2692 -0.23430 2019 10 30 58786 0.1729 0.2685 -0.23531 2019 10 31 58787 0.1714 0.2677 -0.23610 2019 11 1 58788 0.1698 0.2671 -0.23674 2019 11 2 58789 0.1682 0.2664 -0.23727 2019 11 3 58790 0.1666 0.2657 -0.23766 2019 11 4 58791 0.1650 0.2651 -0.23804 2019 11 5 58792 0.1634 0.2645 -0.23852 2019 11 6 58793 0.1618 0.2640 -0.23909 2019 11 7 58794 0.1601 0.2634 -0.23984 2019 11 8 58795 0.1585 0.2629 -0.24075 2019 11 9 58796 0.1568 0.2624 -0.24181 2019 11 10 58797 0.1551 0.2620 -0.24297 2019 11 11 58798 0.1535 0.2615 -0.24418 2019 11 12 58799 0.1518 0.2611 -0.24532 2019 11 13 58800 0.1500 0.2607 -0.24637 2019 11 14 58801 0.1483 0.2604 -0.24733 2019 11 15 58802 0.1466 0.2600 -0.24819 2019 11 16 58803 0.1449 0.2597 -0.24901 2019 11 17 58804 0.1432 0.2594 -0.24982 2019 11 18 58805 0.1414 0.2592 -0.25069 2019 11 19 58806 0.1397 0.2589 -0.25170 2019 11 20 58807 0.1379 0.2587 -0.25294 2019 11 21 58808 0.1362 0.2586 -0.25442 2019 11 22 58809 0.1344 0.2584 -0.25604 2019 11 23 58810 0.1326 0.2583 -0.25778 2019 11 24 58811 0.1309 0.2582 -0.25956 2019 11 25 58812 0.1291 0.2581 -0.26122 2019 11 26 58813 0.1273 0.2581 -0.26274 2019 11 27 58814 0.1255 0.2581 -0.26402 2019 11 28 58815 0.1238 0.2581 -0.26509 2019 11 29 58816 0.1220 0.2582 -0.26597 2019 11 30 58817 0.1202 0.2582 -0.26676 2019 12 1 58818 0.1184 0.2583 -0.26747 2019 12 2 58819 0.1167 0.2584 -0.26819 2019 12 3 58820 0.1149 0.2586 -0.26904 2019 12 4 58821 0.1131 0.2588 -0.27001 2019 12 5 58822 0.1113 0.2590 -0.27104 2019 12 6 58823 0.1096 0.2592 -0.27209 2019 12 7 58824 0.1078 0.2595 -0.27319 2019 12 8 58825 0.1061 0.2598 -0.27430 2019 12 9 58826 0.1043 0.2601 -0.27533 2019 12 10 58827 0.1026 0.2604 -0.27621 2019 12 11 58828 0.1008 0.2608 -0.27694 2019 12 12 58829 0.0991 0.2612 -0.27755 2019 12 13 58830 0.0973 0.2616 -0.27799 2019 12 14 58831 0.0956 0.2621 -0.27838 2019 12 15 58832 0.0939 0.2626 -0.27873 2019 12 16 58833 0.0922 0.2631 -0.27919 2019 12 17 58834 0.0905 0.2636 -0.27984 2019 12 18 58835 0.0888 0.2642 -0.28070 2019 12 19 58836 0.0872 0.2648 -0.28178 2019 12 20 58837 0.0855 0.2654 -0.28295 2019 12 21 58838 0.0838 0.2660 -0.28418 2019 12 22 58839 0.0822 0.2667 -0.28539 2019 12 23 58840 0.0806 0.2674 -0.28646 2019 12 24 58841 0.0790 0.2681 -0.28733 2019 12 25 58842 0.0774 0.2688 -0.28802 2019 12 26 58843 0.0758 0.2696 -0.28859 2019 12 27 58844 0.0742 0.2704 -0.28905 2019 12 28 58845 0.0726 0.2712 -0.28946 2019 12 29 58846 0.0711 0.2720 -0.28991 2019 12 30 58847 0.0696 0.2729 -0.29044 2019 12 31 58848 0.0680 0.2738 -0.29103 2020 1 1 58849 0.0665 0.2747 -0.29173 2020 1 2 58850 0.0651 0.2756 -0.29258 2020 1 3 58851 0.0636 0.2766 -0.29348 2020 1 4 58852 0.0622 0.2776 -0.29440 2020 1 5 58853 0.0607 0.2786 -0.29529 2020 1 6 58854 0.0593 0.2796 -0.29612 2020 1 7 58855 0.0579 0.2806 -0.29680 2020 1 8 58856 0.0566 0.2817 -0.29732 2020 1 9 58857 0.0552 0.2828 -0.29770 2020 1 10 58858 0.0539 0.2839 -0.29798 2020 1 11 58859 0.0526 0.2850 -0.29822 2020 1 12 58860 0.0513 0.2862 -0.29850 2020 1 13 58861 0.0501 0.2874 -0.29896 2020 1 14 58862 0.0488 0.2886 -0.29965 2020 1 15 58863 0.0476 0.2898 -0.30049 2020 1 16 58864 0.0464 0.2910 -0.30135 2020 1 17 58865 0.0452 0.2923 -0.30221 2020 1 18 58866 0.0441 0.2935 -0.30303 2020 1 19 58867 0.0430 0.2948 -0.30371 2020 1 20 58868 0.0419 0.2961 -0.30423 2020 1 21 58869 0.0408 0.2975 -0.30462 2020 1 22 58870 0.0398 0.2988 -0.30488 2020 1 23 58871 0.0387 0.3002 -0.30503 2020 1 24 58872 0.0378 0.3015 -0.30512 2020 1 25 58873 0.0368 0.3029 -0.30522 2020 1 26 58874 0.0358 0.3043 -0.30538 2020 1 27 58875 0.0349 0.3058 -0.30569 2020 1 28 58876 0.0340 0.3072 -0.30612 2020 1 29 58877 0.0332 0.3087 -0.30664 2020 1 30 58878 0.0324 0.3101 -0.30722 2020 1 31 58879 0.0316 0.3116 -0.30784 2020 2 1 58880 0.0308 0.3131 -0.30842 2020 2 2 58881 0.0300 0.3146 -0.30898 2020 2 3 58882 0.0293 0.3161 -0.30951 2020 2 4 58883 0.0286 0.3177 -0.30995 2020 2 5 58884 0.0280 0.3192 -0.31025 2020 2 6 58885 0.0273 0.3207 -0.31049 2020 2 7 58886 0.0267 0.3223 -0.31075 2020 2 8 58887 0.0262 0.3239 -0.31111 2020 2 9 58888 0.0256 0.3255 -0.31162 2020 2 10 58889 0.0251 0.3271 -0.31233 2020 2 11 58890 0.0247 0.3287 -0.31325 2020 2 12 58891 0.0242 0.3303 -0.31435 2020 2 13 58892 0.0238 0.3319 -0.31555 2020 2 14 58893 0.0234 0.3335 -0.31677 2020 2 15 58894 0.0231 0.3351 -0.31792 2020 2 16 58895 0.0227 0.3368 -0.31890 2020 2 17 58896 0.0225 0.3384 -0.31970 2020 2 18 58897 0.0222 0.3401 -0.32034 2020 2 19 58898 0.0220 0.3417 -0.32082 2020 2 20 58899 0.0218 0.3434 -0.32123 2020 2 21 58900 0.0216 0.3450 -0.32163 These predictions are based on all announced leap seconds. 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).