********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 4 April 2019 Vol. XXXII No. 014 ______________________________________________________________________ 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 3 29 58571 0.04655 .00009 0.38021 .00009 -0.116822 0.000028 19 3 30 58572 0.04716 .00009 0.38130 .00009 -0.117547 0.000025 19 3 31 58573 0.04798 .00009 0.38263 .00009 -0.118297 0.000021 19 4 1 58574 0.04886 .00009 0.38401 .00009 -0.119175 0.000016 19 4 2 58575 0.04975 .00009 0.38527 .00009 -0.120157 0.000013 19 4 3 58576 0.05051 .00009 0.38654 .00009 -0.121248 0.000013 19 4 4 58577 0.05104 .00009 0.38792 .00009 -0.122494 0.000055 IERS Final Values MJD x y UT1-UTC " " s 19 2 2 58516 0.0491 0.3085 -0.06168 19 2 3 58517 0.0476 0.3105 -0.06213 19 2 4 58518 0.0459 0.3117 -0.06268 19 2 5 58519 0.0447 0.3128 -0.06336 19 2 6 58520 0.0438 0.3139 -0.06415 19 2 7 58521 0.0430 0.3149 -0.06504 19 2 8 58522 0.0422 0.3163 -0.06603 19 2 9 58523 0.0418 0.3182 -0.06711 19 2 10 58524 0.0412 0.3204 -0.06826 19 2 11 58525 0.0401 0.3221 -0.06945 19 2 12 58526 0.0387 0.3233 -0.07066 19 2 13 58527 0.0376 0.3238 -0.07184 19 2 14 58528 0.0364 0.3242 -0.07297 19 2 15 58529 0.0352 0.3244 -0.07403 19 2 16 58530 0.0349 0.3256 -0.07499 19 2 17 58531 0.0354 0.3270 -0.07596 19 2 18 58532 0.0364 0.3288 -0.07696 19 2 19 58533 0.0372 0.3307 -0.07814 19 2 20 58534 0.0375 0.3326 -0.07951 19 2 21 58535 0.0374 0.3342 -0.08100 19 2 22 58536 0.0368 0.3360 -0.08254 19 2 23 58537 0.0357 0.3375 -0.08406 19 2 24 58538 0.0352 0.3385 -0.08543 19 2 25 58539 0.0355 0.3392 -0.08660 19 2 26 58540 0.0358 0.3402 -0.08754 19 2 27 58541 0.0363 0.3413 -0.08824 19 2 28 58542 0.0373 0.3424 -0.08880 19 3 1 58543 0.0386 0.3441 -0.08932 _______________________________________________________________________ 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 = 0.1201 - 0.0734 cos A + 0.0659 sin A + 0.0032 cos C - 0.0297 sin C y = 0.3492 + 0.0605 cos A + 0.0665 sin A - 0.0297 cos C - 0.0032 sin C UT1-UTC = -0.1058 - 0.00065 (MJD - 58585) - (UT2-UT1) where A = 2*pi*(MJD-58577)/365.25 and C = 2*pi*(MJD-58577)/435. TAI-UTC(MJD 58578) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58577)**0.80 S t = 0.00025 (MJD-58577)**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 5 58578 0.0515 0.3892 -0.12379 2019 4 6 58579 0.0520 0.3904 -0.12510 2019 4 7 58580 0.0526 0.3915 -0.12640 2019 4 8 58581 0.0533 0.3926 -0.12767 2019 4 9 58582 0.0541 0.3937 -0.12884 2019 4 10 58583 0.0550 0.3948 -0.12989 2019 4 11 58584 0.0559 0.3958 -0.13081 2019 4 12 58585 0.0568 0.3969 -0.13166 2019 4 13 58586 0.0577 0.3980 -0.13253 2019 4 14 58587 0.0587 0.3991 -0.13352 2019 4 15 58588 0.0596 0.4001 -0.13467 2019 4 16 58589 0.0605 0.4011 -0.13602 2019 4 17 58590 0.0616 0.4020 -0.13756 2019 4 18 58591 0.0626 0.4030 -0.13920 2019 4 19 58592 0.0637 0.4039 -0.14084 2019 4 20 58593 0.0649 0.4048 -0.14236 2019 4 21 58594 0.0660 0.4058 -0.14368 2019 4 22 58595 0.0671 0.4067 -0.14477 2019 4 23 58596 0.0683 0.4076 -0.14564 2019 4 24 58597 0.0694 0.4085 -0.14633 2019 4 25 58598 0.0706 0.4093 -0.14691 2019 4 26 58599 0.0718 0.4101 -0.14744 2019 4 27 58600 0.0731 0.4109 -0.14796 2019 4 28 58601 0.0743 0.4117 -0.14854 2019 4 29 58602 0.0756 0.4125 -0.14919 2019 4 30 58603 0.0769 0.4132 -0.14994 2019 5 1 58604 0.0782 0.4140 -0.15078 2019 5 2 58605 0.0795 0.4147 -0.15170 2019 5 3 58606 0.0808 0.4154 -0.15266 2019 5 4 58607 0.0821 0.4161 -0.15361 2019 5 5 58608 0.0835 0.4167 -0.15450 2019 5 6 58609 0.0848 0.4173 -0.15529 2019 5 7 58610 0.0862 0.4179 -0.15596 2019 5 8 58611 0.0876 0.4185 -0.15650 2019 5 9 58612 0.0890 0.4191 -0.15698 2019 5 10 58613 0.0904 0.4196 -0.15745 2019 5 11 58614 0.0919 0.4202 -0.15800 2019 5 12 58615 0.0933 0.4207 -0.15869 2019 5 13 58616 0.0948 0.4211 -0.15956 2019 5 14 58617 0.0962 0.4216 -0.16061 2019 5 15 58618 0.0977 0.4220 -0.16179 2019 5 16 58619 0.0992 0.4224 -0.16302 2019 5 17 58620 0.1007 0.4228 -0.16419 2019 5 18 58621 0.1021 0.4232 -0.16522 2019 5 19 58622 0.1037 0.4235 -0.16604 2019 5 20 58623 0.1052 0.4238 -0.16666 2019 5 21 58624 0.1067 0.4241 -0.16710 2019 5 22 58625 0.1082 0.4244 -0.16741 2019 5 23 58626 0.1097 0.4246 -0.16764 2019 5 24 58627 0.1113 0.4248 -0.16787 2019 5 25 58628 0.1128 0.4250 -0.16813 2019 5 26 58629 0.1144 0.4252 -0.16847 2019 5 27 58630 0.1159 0.4253 -0.16889 2019 5 28 58631 0.1175 0.4255 -0.16940 2019 5 29 58632 0.1190 0.4256 -0.16999 2019 5 30 58633 0.1206 0.4256 -0.17064 2019 5 31 58634 0.1221 0.4257 -0.17130 2019 6 1 58635 0.1237 0.4257 -0.17192 2019 6 2 58636 0.1253 0.4257 -0.17246 2019 6 3 58637 0.1268 0.4257 -0.17286 2019 6 4 58638 0.1284 0.4256 -0.17313 2019 6 5 58639 0.1299 0.4255 -0.17327 2019 6 6 58640 0.1315 0.4254 -0.17336 2019 6 7 58641 0.1331 0.4253 -0.17347 2019 6 8 58642 0.1346 0.4252 -0.17369 2019 6 9 58643 0.1362 0.4250 -0.17405 2019 6 10 58644 0.1377 0.4248 -0.17457 2019 6 11 58645 0.1393 0.4246 -0.17520 2019 6 12 58646 0.1408 0.4243 -0.17587 2019 6 13 58647 0.1424 0.4241 -0.17650 2019 6 14 58648 0.1439 0.4238 -0.17700 2019 6 15 58649 0.1454 0.4234 -0.17731 2019 6 16 58650 0.1470 0.4231 -0.17742 2019 6 17 58651 0.1485 0.4227 -0.17733 2019 6 18 58652 0.1500 0.4223 -0.17710 2019 6 19 58653 0.1515 0.4219 -0.17678 2019 6 20 58654 0.1530 0.4215 -0.17644 2019 6 21 58655 0.1545 0.4210 -0.17613 2019 6 22 58656 0.1560 0.4205 -0.17589 2019 6 23 58657 0.1575 0.4200 -0.17575 2019 6 24 58658 0.1589 0.4195 -0.17571 2019 6 25 58659 0.1604 0.4189 -0.17575 2019 6 26 58660 0.1618 0.4183 -0.17587 2019 6 27 58661 0.1633 0.4177 -0.17602 2019 6 28 58662 0.1647 0.4171 -0.17616 2019 6 29 58663 0.1661 0.4165 -0.17624 2019 6 30 58664 0.1675 0.4158 -0.17622 2019 7 1 58665 0.1689 0.4151 -0.17607 2019 7 2 58666 0.1703 0.4144 -0.17581 2019 7 3 58667 0.1716 0.4137 -0.17548 2019 7 4 58668 0.1730 0.4129 -0.17517 2019 7 5 58669 0.1743 0.4121 -0.17497 2019 7 6 58670 0.1756 0.4113 -0.17494 2019 7 7 58671 0.1769 0.4105 -0.17508 2019 7 8 58672 0.1782 0.4097 -0.17536 2019 7 9 58673 0.1795 0.4088 -0.17569 2019 7 10 58674 0.1807 0.4079 -0.17598 2019 7 11 58675 0.1820 0.4070 -0.17616 2019 7 12 58676 0.1832 0.4061 -0.17617 2019 7 13 58677 0.1844 0.4052 -0.17598 2019 7 14 58678 0.1856 0.4042 -0.17563 2019 7 15 58679 0.1867 0.4032 -0.17513 2019 7 16 58680 0.1879 0.4022 -0.17454 2019 7 17 58681 0.1890 0.4012 -0.17393 2019 7 18 58682 0.1901 0.4002 -0.17334 2019 7 19 58683 0.1912 0.3992 -0.17282 2019 7 20 58684 0.1923 0.3981 -0.17239 2019 7 21 58685 0.1933 0.3970 -0.17208 2019 7 22 58686 0.1943 0.3959 -0.17186 2019 7 23 58687 0.1953 0.3948 -0.17173 2019 7 24 58688 0.1963 0.3937 -0.17165 2019 7 25 58689 0.1973 0.3925 -0.17158 2019 7 26 58690 0.1982 0.3914 -0.17148 2019 7 27 58691 0.1992 0.3902 -0.17132 2019 7 28 58692 0.2000 0.3890 -0.17108 2019 7 29 58693 0.2009 0.3878 -0.17073 2019 7 30 58694 0.2018 0.3866 -0.17032 2019 7 31 58695 0.2026 0.3853 -0.16992 2019 8 1 58696 0.2034 0.3841 -0.16962 2019 8 2 58697 0.2042 0.3828 -0.16951 2019 8 3 58698 0.2049 0.3816 -0.16961 2019 8 4 58699 0.2056 0.3803 -0.16991 2019 8 5 58700 0.2063 0.3790 -0.17033 2019 8 6 58701 0.2070 0.3777 -0.17075 2019 8 7 58702 0.2077 0.3764 -0.17106 2019 8 8 58703 0.2083 0.3750 -0.17121 2019 8 9 58704 0.2089 0.3737 -0.17117 2019 8 10 58705 0.2095 0.3724 -0.17095 2019 8 11 58706 0.2100 0.3710 -0.17058 2019 8 12 58707 0.2105 0.3697 -0.17014 2019 8 13 58708 0.2110 0.3683 -0.16966 2019 8 14 58709 0.2115 0.3669 -0.16922 2019 8 15 58710 0.2119 0.3655 -0.16884 2019 8 16 58711 0.2124 0.3641 -0.16858 2019 8 17 58712 0.2127 0.3627 -0.16844 2019 8 18 58713 0.2131 0.3613 -0.16842 2019 8 19 58714 0.2134 0.3599 -0.16850 2019 8 20 58715 0.2137 0.3585 -0.16866 2019 8 21 58716 0.2140 0.3571 -0.16884 2019 8 22 58717 0.2142 0.3557 -0.16901 2019 8 23 58718 0.2145 0.3542 -0.16914 2019 8 24 58719 0.2147 0.3528 -0.16920 2019 8 25 58720 0.2148 0.3514 -0.16919 2019 8 26 58721 0.2150 0.3499 -0.16911 2019 8 27 58722 0.2151 0.3485 -0.16903 2019 8 28 58723 0.2151 0.3471 -0.16903 2019 8 29 58724 0.2152 0.3456 -0.16920 2019 8 30 58725 0.2152 0.3442 -0.16962 2019 8 31 58726 0.2152 0.3427 -0.17029 2019 9 1 58727 0.2152 0.3413 -0.17115 2019 9 2 58728 0.2151 0.3398 -0.17210 2019 9 3 58729 0.2150 0.3384 -0.17299 2019 9 4 58730 0.2149 0.3370 -0.17373 2019 9 5 58731 0.2147 0.3355 -0.17426 2019 9 6 58732 0.2146 0.3341 -0.17458 2019 9 7 58733 0.2143 0.3327 -0.17475 2019 9 8 58734 0.2141 0.3312 -0.17481 2019 9 9 58735 0.2138 0.3298 -0.17483 2019 9 10 58736 0.2136 0.3284 -0.17487 2019 9 11 58737 0.2132 0.3270 -0.17499 2019 9 12 58738 0.2129 0.3256 -0.17521 2019 9 13 58739 0.2125 0.3242 -0.17555 2019 9 14 58740 0.2121 0.3228 -0.17603 2019 9 15 58741 0.2117 0.3214 -0.17661 2019 9 16 58742 0.2112 0.3200 -0.17728 2019 9 17 58743 0.2107 0.3186 -0.17798 2019 9 18 58744 0.2102 0.3172 -0.17868 2019 9 19 58745 0.2097 0.3159 -0.17933 2019 9 20 58746 0.2091 0.3145 -0.17990 2019 9 21 58747 0.2085 0.3132 -0.18039 2019 9 22 58748 0.2079 0.3118 -0.18081 2019 9 23 58749 0.2072 0.3105 -0.18120 2019 9 24 58750 0.2065 0.3092 -0.18163 2019 9 25 58751 0.2058 0.3079 -0.18219 2019 9 26 58752 0.2051 0.3066 -0.18297 2019 9 27 58753 0.2043 0.3053 -0.18402 2019 9 28 58754 0.2036 0.3040 -0.18530 2019 9 29 58755 0.2027 0.3028 -0.18674 2019 9 30 58756 0.2019 0.3015 -0.18820 2019 10 1 58757 0.2011 0.3003 -0.18955 2019 10 2 58758 0.2002 0.2991 -0.19070 2019 10 3 58759 0.1993 0.2978 -0.19160 2019 10 4 58760 0.1983 0.2967 -0.19229 2019 10 5 58761 0.1974 0.2955 -0.19282 2019 10 6 58762 0.1964 0.2943 -0.19327 2019 10 7 58763 0.1954 0.2932 -0.19369 2019 10 8 58764 0.1944 0.2920 -0.19417 2019 10 9 58765 0.1933 0.2909 -0.19472 2019 10 10 58766 0.1922 0.2898 -0.19539 2019 10 11 58767 0.1911 0.2887 -0.19619 2019 10 12 58768 0.1900 0.2877 -0.19710 2019 10 13 58769 0.1889 0.2866 -0.19810 2019 10 14 58770 0.1877 0.2856 -0.19916 2019 10 15 58771 0.1865 0.2846 -0.20020 2019 10 16 58772 0.1853 0.2836 -0.20119 2019 10 17 58773 0.1841 0.2826 -0.20208 2019 10 18 58774 0.1829 0.2817 -0.20286 2019 10 19 58775 0.1816 0.2807 -0.20354 2019 10 20 58776 0.1803 0.2798 -0.20415 2019 10 21 58777 0.1790 0.2789 -0.20477 2019 10 22 58778 0.1777 0.2781 -0.20547 2019 10 23 58779 0.1763 0.2772 -0.20635 2019 10 24 58780 0.1750 0.2764 -0.20746 2019 10 25 58781 0.1736 0.2756 -0.20882 2019 10 26 58782 0.1722 0.2748 -0.21037 2019 10 27 58783 0.1708 0.2740 -0.21199 2019 10 28 58784 0.1694 0.2733 -0.21357 2019 10 29 58785 0.1680 0.2725 -0.21496 2019 10 30 58786 0.1665 0.2719 -0.21610 2019 10 31 58787 0.1650 0.2712 -0.21698 2019 11 1 58788 0.1636 0.2705 -0.21764 2019 11 2 58789 0.1621 0.2699 -0.21816 2019 11 3 58790 0.1605 0.2693 -0.21862 2019 11 4 58791 0.1590 0.2687 -0.21907 2019 11 5 58792 0.1575 0.2681 -0.21960 2019 11 6 58793 0.1559 0.2676 -0.22022 2019 11 7 58794 0.1544 0.2671 -0.22097 2019 11 8 58795 0.1528 0.2666 -0.22184 2019 11 9 58796 0.1512 0.2661 -0.22283 2019 11 10 58797 0.1496 0.2657 -0.22391 2019 11 11 58798 0.1480 0.2653 -0.22503 2019 11 12 58799 0.1464 0.2649 -0.22609 2019 11 13 58800 0.1448 0.2646 -0.22702 2019 11 14 58801 0.1432 0.2642 -0.22778 2019 11 15 58802 0.1415 0.2639 -0.22840 2019 11 16 58803 0.1399 0.2636 -0.22893 2019 11 17 58804 0.1382 0.2634 -0.22940 2019 11 18 58805 0.1366 0.2631 -0.22989 2019 11 19 58806 0.1349 0.2629 -0.23051 2019 11 20 58807 0.1332 0.2628 -0.23133 2019 11 21 58808 0.1316 0.2626 -0.23239 2019 11 22 58809 0.1299 0.2625 -0.23368 2019 11 23 58810 0.1282 0.2624 -0.23507 2019 11 24 58811 0.1265 0.2623 -0.23647 2019 11 25 58812 0.1248 0.2623 -0.23783 2019 11 26 58813 0.1232 0.2622 -0.23908 2019 11 27 58814 0.1215 0.2622 -0.24006 2019 11 28 58815 0.1198 0.2623 -0.24076 2019 11 29 58816 0.1181 0.2623 -0.24134 2019 11 30 58817 0.1164 0.2624 -0.24194 2019 12 1 58818 0.1147 0.2625 -0.24252 2019 12 2 58819 0.1130 0.2627 -0.24316 2019 12 3 58820 0.1113 0.2628 -0.24388 2019 12 4 58821 0.1096 0.2630 -0.24468 2019 12 5 58822 0.1079 0.2632 -0.24556 2019 12 6 58823 0.1063 0.2635 -0.24656 2019 12 7 58824 0.1046 0.2638 -0.24761 2019 12 8 58825 0.1029 0.2641 -0.24868 2019 12 9 58826 0.1012 0.2644 -0.24972 2019 12 10 58827 0.0996 0.2647 -0.25072 2019 12 11 58828 0.0979 0.2651 -0.25168 2019 12 12 58829 0.0962 0.2655 -0.25254 2019 12 13 58830 0.0946 0.2660 -0.25324 2019 12 14 58831 0.0929 0.2664 -0.25386 2019 12 15 58832 0.0913 0.2669 -0.25446 2019 12 16 58833 0.0897 0.2674 -0.25517 2019 12 17 58834 0.0881 0.2679 -0.25604 2019 12 18 58835 0.0865 0.2685 -0.25711 2019 12 19 58836 0.0849 0.2691 -0.25836 2019 12 20 58837 0.0833 0.2697 -0.25977 2019 12 21 58838 0.0817 0.2703 -0.26124 2019 12 22 58839 0.0801 0.2710 -0.26262 2019 12 23 58840 0.0786 0.2717 -0.26384 2019 12 24 58841 0.0770 0.2724 -0.26487 2019 12 25 58842 0.0755 0.2731 -0.26576 2019 12 26 58843 0.0740 0.2739 -0.26654 2019 12 27 58844 0.0725 0.2747 -0.26728 2019 12 28 58845 0.0710 0.2755 -0.26801 2019 12 29 58846 0.0695 0.2763 -0.26873 2019 12 30 58847 0.0680 0.2772 -0.26950 2019 12 31 58848 0.0666 0.2780 -0.27033 2020 1 1 58849 0.0652 0.2789 -0.27122 2020 1 2 58850 0.0637 0.2799 -0.27219 2020 1 3 58851 0.0624 0.2808 -0.27326 2020 1 4 58852 0.0610 0.2818 -0.27438 2020 1 5 58853 0.0596 0.2828 -0.27550 2020 1 6 58854 0.0583 0.2838 -0.27652 2020 1 7 58855 0.0569 0.2848 -0.27741 2020 1 8 58856 0.0556 0.2858 -0.27814 2020 1 9 58857 0.0543 0.2869 -0.27872 2020 1 10 58858 0.0531 0.2880 -0.27924 2020 1 11 58859 0.0518 0.2891 -0.27978 2020 1 12 58860 0.0506 0.2903 -0.28044 2020 1 13 58861 0.0494 0.2914 -0.28127 2020 1 14 58862 0.0482 0.2926 -0.28224 2020 1 15 58863 0.0470 0.2938 -0.28333 2020 1 16 58864 0.0459 0.2950 -0.28447 2020 1 17 58865 0.0448 0.2962 -0.28560 2020 1 18 58866 0.0437 0.2975 -0.28661 2020 1 19 58867 0.0426 0.2987 -0.28739 2020 1 20 58868 0.0416 0.3000 -0.28796 2020 1 21 58869 0.0405 0.3013 -0.28833 2020 1 22 58870 0.0395 0.3026 -0.28855 2020 1 23 58871 0.0386 0.3040 -0.28870 2020 1 24 58872 0.0376 0.3053 -0.28884 2020 1 25 58873 0.0367 0.3067 -0.28904 2020 1 26 58874 0.0358 0.3080 -0.28922 2020 1 27 58875 0.0349 0.3094 -0.28948 2020 1 28 58876 0.0340 0.3108 -0.28989 2020 1 29 58877 0.0332 0.3122 -0.29041 2020 1 30 58878 0.0324 0.3137 -0.29108 2020 1 31 58879 0.0317 0.3151 -0.29184 2020 2 1 58880 0.0309 0.3166 -0.29267 2020 2 2 58881 0.0302 0.3180 -0.29353 2020 2 3 58882 0.0295 0.3195 -0.29436 2020 2 4 58883 0.0289 0.3210 -0.29508 2020 2 5 58884 0.0282 0.3225 -0.29571 2020 2 6 58885 0.0276 0.3240 -0.29630 2020 2 7 58886 0.0270 0.3256 -0.29691 2020 2 8 58887 0.0265 0.3271 -0.29763 2020 2 9 58888 0.0260 0.3286 -0.29856 2020 2 10 58889 0.0255 0.3302 -0.29974 2020 2 11 58890 0.0250 0.3317 -0.30120 2020 2 12 58891 0.0246 0.3333 -0.30288 2020 2 13 58892 0.0242 0.3349 -0.30468 2020 2 14 58893 0.0239 0.3364 -0.30639 2020 2 15 58894 0.0235 0.3380 -0.30795 2020 2 16 58895 0.0232 0.3396 -0.30932 2020 2 17 58896 0.0229 0.3412 -0.31048 2020 2 18 58897 0.0227 0.3428 -0.31150 2020 2 19 58898 0.0225 0.3444 -0.31239 2020 2 20 58899 0.0223 0.3460 -0.31324 2020 2 21 58900 0.0221 0.3476 -0.31408 2020 2 22 58901 0.0220 0.3492 -0.31499 2020 2 23 58902 0.0219 0.3509 -0.31593 2020 2 24 58903 0.0218 0.3525 -0.31698 2020 2 25 58904 0.0218 0.3541 -0.31818 2020 2 26 58905 0.0218 0.3557 -0.31951 2020 2 27 58906 0.0218 0.3573 -0.32084 2020 2 28 58907 0.0219 0.3589 -0.32212 2020 2 29 58908 0.0220 0.3606 -0.32337 2020 3 1 58909 0.0221 0.3622 -0.32454 2020 3 2 58910 0.0223 0.3638 -0.32558 2020 3 3 58911 0.0225 0.3654 -0.32645 2020 3 4 58912 0.0227 0.3670 -0.32719 2020 3 5 58913 0.0229 0.3686 -0.32791 2020 3 6 58914 0.0232 0.3702 -0.32861 2020 3 7 58915 0.0235 0.3718 -0.32945 2020 3 8 58916 0.0239 0.3734 -0.33046 2020 3 9 58917 0.0243 0.3750 -0.33176 2020 3 10 58918 0.0247 0.3766 -0.33334 2020 3 11 58919 0.0251 0.3782 -0.33509 2020 3 12 58920 0.0256 0.3798 -0.33690 2020 3 13 58921 0.0261 0.3813 -0.33857 2020 3 14 58922 0.0266 0.3829 -0.34005 2020 3 15 58923 0.0271 0.3845 -0.34135 2020 3 16 58924 0.0277 0.3860 -0.34243 2020 3 17 58925 0.0283 0.3875 -0.34334 2020 3 18 58926 0.0290 0.3891 -0.34422 2020 3 19 58927 0.0297 0.3906 -0.34512 2020 3 20 58928 0.0304 0.3921 -0.34607 2020 3 21 58929 0.0311 0.3936 -0.34710 2020 3 22 58930 0.0319 0.3951 -0.34825 2020 3 23 58931 0.0327 0.3965 -0.34951 2020 3 24 58932 0.0335 0.3980 -0.35083 2020 3 25 58933 0.0344 0.3994 -0.35221 2020 3 26 58934 0.0352 0.4009 -0.35366 2020 3 27 58935 0.0362 0.4023 -0.35507 2020 3 28 58936 0.0371 0.4037 -0.35638 2020 3 29 58937 0.0381 0.4051 -0.35758 2020 3 30 58938 0.0390 0.4065 -0.35866 2020 3 31 58939 0.0401 0.4078 -0.35957 2020 4 1 58940 0.0411 0.4092 -0.36036 2020 4 2 58941 0.0422 0.4105 -0.36112 2020 4 3 58942 0.0433 0.4118 -0.36192 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) 58555 -105.32 0.62 -9.79 0.24 58556 -105.25 0.62 -9.81 0.24 58557 -105.25 0.62 -9.77 0.24 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 58516 -106.6 -8.0 58517 -106.1 -8.1 58518 -105.7 -8.1 58519 -105.5 -8.0 58520 -105.6 -7.9 58521 -105.8 -7.9 58522 -106.1 -8.0 58523 -106.1 -8.1 58524 -106.0 -8.2 58525 -105.9 -8.3 58526 -105.9 -8.4 58527 -106.0 -8.5 58528 -106.0 -8.4 58529 -106.3 -8.2 58530 -106.9 -8.3 58531 -107.6 -8.7 58532 -107.6 -9.1 58533 -106.8 -9.3 58534 -105.7 -9.2 58535 -105.2 -9.0 58536 -105.2 -8.8 58537 -105.5 -8.7 58538 -105.9 -8.5 58539 -106.0 -8.5 58540 -106.0 -8.8 58541 -106.1 -9.1 58542 -106.4 -9.4 58543 -106.5 -9.5 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58555 0.245 0.247 -0.238 0.237 58556 0.246 0.247 -0.236 0.237 58557 0.246 0.247 -0.233 0.237 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 58516 0.27 -0.17 58517 0.30 -0.19 58518 0.33 -0.21 58519 0.36 -0.23 58520 0.34 -0.23 58521 0.30 -0.22 58522 0.27 -0.21 58523 0.27 -0.19 58524 0.29 -0.16 58525 0.31 -0.14 58526 0.33 -0.12 58527 0.31 -0.15 58528 0.29 -0.21 58529 0.25 -0.26 58530 0.25 -0.28 58531 0.26 -0.28 58532 0.27 -0.28 58533 0.28 -0.29 58534 0.28 -0.29 58535 0.27 -0.24 58536 0.26 -0.18 58537 0.26 -0.18 58538 0.27 -0.19 58539 0.28 -0.20 58540 0.29 -0.22 58541 0.28 -0.22 58542 0.27 -0.21 58543 0.26 -0.21 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).