********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 28 February 2019 Vol. XXXII No. 009 ______________________________________________________________________ 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 22 58536 0.03670 .00009 0.33590 .00009 -0.082482 0.000015 19 2 23 58537 0.03583 .00009 0.33738 .00009 -0.083984 0.000012 19 2 24 58538 0.03534 .00009 0.33842 .00009 -0.085374 0.000012 19 2 25 58539 0.03542 .00009 0.33927 .00009 -0.086540 0.000010 19 2 26 58540 0.03580 .00009 0.34025 .00009 -0.087454 0.000010 19 2 27 58541 0.03643 .00010 0.34134 .00009 -0.088146 0.000008 19 2 28 58542 0.03733 .00009 0.34246 .00009 -0.088721 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 = 0.1244 - 0.0992 cos A + 0.0180 sin A + 0.0199 cos C - 0.0285 sin C y = 0.3528 + 0.0167 cos A + 0.0896 sin A - 0.0285 cos C - 0.0199 sin C UT1-UTC = -0.0917 - 0.00066 (MJD - 58550) - (UT2-UT1) where A = 2*pi*(MJD-58542)/365.25 and C = 2*pi*(MJD-58542)/435. TAI-UTC(MJD 58543) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58542)**0.80 S t = 0.00025 (MJD-58542)**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 3 1 58543 0.0381 0.3439 -0.08924 2019 3 2 58544 0.0387 0.3453 -0.08972 2019 3 3 58545 0.0390 0.3467 -0.09017 2019 3 4 58546 0.0391 0.3481 -0.09065 2019 3 5 58547 0.0391 0.3495 -0.09121 2019 3 6 58548 0.0391 0.3508 -0.09188 2019 3 7 58549 0.0393 0.3521 -0.09268 2019 3 8 58550 0.0396 0.3534 -0.09361 2019 3 9 58551 0.0400 0.3546 -0.09460 2019 3 10 58552 0.0403 0.3559 -0.09562 2019 3 11 58553 0.0406 0.3573 -0.09664 2019 3 12 58554 0.0409 0.3587 -0.09764 2019 3 13 58555 0.0411 0.3601 -0.09857 2019 3 14 58556 0.0413 0.3615 -0.09942 2019 3 15 58557 0.0415 0.3629 -0.10023 2019 3 16 58558 0.0417 0.3642 -0.10106 2019 3 17 58559 0.0420 0.3654 -0.10198 2019 3 18 58560 0.0424 0.3667 -0.10310 2019 3 19 58561 0.0428 0.3679 -0.10448 2019 3 20 58562 0.0433 0.3691 -0.10611 2019 3 21 58563 0.0438 0.3704 -0.10793 2019 3 22 58564 0.0442 0.3716 -0.10982 2019 3 23 58565 0.0447 0.3729 -0.11167 2019 3 24 58566 0.0452 0.3742 -0.11338 2019 3 25 58567 0.0458 0.3754 -0.11489 2019 3 26 58568 0.0463 0.3766 -0.11618 2019 3 27 58569 0.0469 0.3778 -0.11731 2019 3 28 58570 0.0476 0.3790 -0.11832 2019 3 29 58571 0.0482 0.3802 -0.11928 2019 3 30 58572 0.0489 0.3814 -0.12023 2019 3 31 58573 0.0496 0.3826 -0.12123 2019 4 1 58574 0.0503 0.3838 -0.12231 2019 4 2 58575 0.0511 0.3850 -0.12349 2019 4 3 58576 0.0518 0.3861 -0.12479 2019 4 4 58577 0.0526 0.3873 -0.12618 2019 4 5 58578 0.0534 0.3884 -0.12764 2019 4 6 58579 0.0543 0.3895 -0.12913 2019 4 7 58580 0.0551 0.3906 -0.13059 2019 4 8 58581 0.0560 0.3917 -0.13199 2019 4 9 58582 0.0569 0.3928 -0.13328 2019 4 10 58583 0.0578 0.3939 -0.13446 2019 4 11 58584 0.0588 0.3950 -0.13553 2019 4 12 58585 0.0597 0.3960 -0.13654 2019 4 13 58586 0.0607 0.3970 -0.13756 2019 4 14 58587 0.0617 0.3980 -0.13866 2019 4 15 58588 0.0627 0.3990 -0.13991 2019 4 16 58589 0.0638 0.4000 -0.14136 2019 4 17 58590 0.0649 0.4010 -0.14299 2019 4 18 58591 0.0660 0.4019 -0.14473 2019 4 19 58592 0.0671 0.4029 -0.14646 2019 4 20 58593 0.0682 0.4038 -0.14809 2019 4 21 58594 0.0693 0.4047 -0.14952 2019 4 22 58595 0.0705 0.4056 -0.15073 2019 4 23 58596 0.0717 0.4064 -0.15173 2019 4 24 58597 0.0729 0.4073 -0.15254 2019 4 25 58598 0.0741 0.4081 -0.15325 2019 4 26 58599 0.0754 0.4089 -0.15392 2019 4 27 58600 0.0766 0.4097 -0.15460 2019 4 28 58601 0.0779 0.4105 -0.15534 2019 4 29 58602 0.0792 0.4113 -0.15617 2019 4 30 58603 0.0805 0.4120 -0.15712 2019 5 1 58604 0.0818 0.4127 -0.15817 2019 5 2 58605 0.0831 0.4134 -0.15931 2019 5 3 58606 0.0845 0.4141 -0.16049 2019 5 4 58607 0.0859 0.4147 -0.16167 2019 5 5 58608 0.0872 0.4154 -0.16279 2019 5 6 58609 0.0886 0.4160 -0.16380 2019 5 7 58610 0.0900 0.4166 -0.16466 2019 5 8 58611 0.0914 0.4171 -0.16539 2019 5 9 58612 0.0929 0.4177 -0.16603 2019 5 10 58613 0.0943 0.4182 -0.16663 2019 5 11 58614 0.0958 0.4187 -0.16728 2019 5 12 58615 0.0972 0.4192 -0.16806 2019 5 13 58616 0.0987 0.4197 -0.16900 2019 5 14 58617 0.1002 0.4201 -0.17011 2019 5 15 58618 0.1017 0.4205 -0.17134 2019 5 16 58619 0.1032 0.4209 -0.17260 2019 5 17 58620 0.1047 0.4213 -0.17379 2019 5 18 58621 0.1062 0.4217 -0.17482 2019 5 19 58622 0.1077 0.4220 -0.17564 2019 5 20 58623 0.1093 0.4223 -0.17624 2019 5 21 58624 0.1108 0.4226 -0.17664 2019 5 22 58625 0.1123 0.4228 -0.17691 2019 5 23 58626 0.1139 0.4230 -0.17711 2019 5 24 58627 0.1154 0.4233 -0.17728 2019 5 25 58628 0.1170 0.4234 -0.17750 2019 5 26 58629 0.1186 0.4236 -0.17778 2019 5 27 58630 0.1201 0.4237 -0.17816 2019 5 28 58631 0.1217 0.4239 -0.17863 2019 5 29 58632 0.1233 0.4239 -0.17918 2019 5 30 58633 0.1249 0.4240 -0.17978 2019 5 31 58634 0.1264 0.4240 -0.18040 2019 6 1 58635 0.1280 0.4241 -0.18097 2019 6 2 58636 0.1296 0.4241 -0.18145 2019 6 3 58637 0.1312 0.4240 -0.18179 2019 6 4 58638 0.1328 0.4240 -0.18200 2019 6 5 58639 0.1343 0.4239 -0.18209 2019 6 6 58640 0.1359 0.4238 -0.18213 2019 6 7 58641 0.1375 0.4237 -0.18219 2019 6 8 58642 0.1391 0.4235 -0.18237 2019 6 9 58643 0.1406 0.4233 -0.18269 2019 6 10 58644 0.1422 0.4231 -0.18316 2019 6 11 58645 0.1438 0.4229 -0.18375 2019 6 12 58646 0.1453 0.4227 -0.18437 2019 6 13 58647 0.1469 0.4224 -0.18496 2019 6 14 58648 0.1484 0.4221 -0.18542 2019 6 15 58649 0.1500 0.4218 -0.18570 2019 6 16 58650 0.1515 0.4214 -0.18577 2019 6 17 58651 0.1531 0.4211 -0.18568 2019 6 18 58652 0.1546 0.4207 -0.18544 2019 6 19 58653 0.1561 0.4203 -0.18512 2019 6 20 58654 0.1576 0.4198 -0.18477 2019 6 21 58655 0.1591 0.4194 -0.18444 2019 6 22 58656 0.1606 0.4189 -0.18418 2019 6 23 58657 0.1621 0.4184 -0.18401 2019 6 24 58658 0.1636 0.4178 -0.18395 2019 6 25 58659 0.1650 0.4173 -0.18398 2019 6 26 58660 0.1665 0.4167 -0.18408 2019 6 27 58661 0.1679 0.4161 -0.18421 2019 6 28 58662 0.1694 0.4155 -0.18433 2019 6 29 58663 0.1708 0.4149 -0.18440 2019 6 30 58664 0.1722 0.4142 -0.18438 2019 7 1 58665 0.1736 0.4135 -0.18423 2019 7 2 58666 0.1749 0.4128 -0.18397 2019 7 3 58667 0.1763 0.4121 -0.18365 2019 7 4 58668 0.1777 0.4113 -0.18335 2019 7 5 58669 0.1790 0.4106 -0.18316 2019 7 6 58670 0.1803 0.4098 -0.18313 2019 7 7 58671 0.1816 0.4090 -0.18329 2019 7 8 58672 0.1829 0.4081 -0.18358 2019 7 9 58673 0.1842 0.4073 -0.18393 2019 7 10 58674 0.1854 0.4064 -0.18424 2019 7 11 58675 0.1867 0.4055 -0.18445 2019 7 12 58676 0.1879 0.4046 -0.18448 2019 7 13 58677 0.1891 0.4037 -0.18433 2019 7 14 58678 0.1903 0.4028 -0.18400 2019 7 15 58679 0.1915 0.4018 -0.18353 2019 7 16 58680 0.1926 0.4008 -0.18298 2019 7 17 58681 0.1937 0.3998 -0.18240 2019 7 18 58682 0.1948 0.3988 -0.18184 2019 7 19 58683 0.1959 0.3978 -0.18135 2019 7 20 58684 0.1970 0.3967 -0.18096 2019 7 21 58685 0.1981 0.3956 -0.18068 2019 7 22 58686 0.1991 0.3946 -0.18051 2019 7 23 58687 0.2001 0.3934 -0.18042 2019 7 24 58688 0.2011 0.3923 -0.18039 2019 7 25 58689 0.2020 0.3912 -0.18037 2019 7 26 58690 0.2030 0.3901 -0.18033 2019 7 27 58691 0.2039 0.3889 -0.18022 2019 7 28 58692 0.2048 0.3877 -0.18002 2019 7 29 58693 0.2056 0.3865 -0.17973 2019 7 30 58694 0.2065 0.3853 -0.17937 2019 7 31 58695 0.2073 0.3841 -0.17902 2019 8 1 58696 0.2081 0.3829 -0.17876 2019 8 2 58697 0.2089 0.3816 -0.17869 2019 8 3 58698 0.2096 0.3804 -0.17884 2019 8 4 58699 0.2103 0.3791 -0.17918 2019 8 5 58700 0.2110 0.3779 -0.17964 2019 8 6 58701 0.2117 0.3766 -0.18009 2019 8 7 58702 0.2123 0.3753 -0.18045 2019 8 8 58703 0.2130 0.3740 -0.18063 2019 8 9 58704 0.2136 0.3726 -0.18062 2019 8 10 58705 0.2141 0.3713 -0.18043 2019 8 11 58706 0.2147 0.3700 -0.18010 2019 8 12 58707 0.2152 0.3686 -0.17968 2019 8 13 58708 0.2157 0.3673 -0.17924 2019 8 14 58709 0.2161 0.3659 -0.17882 2019 8 15 58710 0.2165 0.3646 -0.17848 2019 8 16 58711 0.2170 0.3632 -0.17824 2019 8 17 58712 0.2173 0.3618 -0.17812 2019 8 18 58713 0.2177 0.3604 -0.17812 2019 8 19 58714 0.2180 0.3590 -0.17823 2019 8 20 58715 0.2183 0.3576 -0.17840 2019 8 21 58716 0.2186 0.3562 -0.17860 2019 8 22 58717 0.2188 0.3548 -0.17878 2019 8 23 58718 0.2190 0.3534 -0.17892 2019 8 24 58719 0.2192 0.3520 -0.17898 2019 8 25 58720 0.2193 0.3506 -0.17896 2019 8 26 58721 0.2195 0.3492 -0.17888 2019 8 27 58722 0.2195 0.3477 -0.17878 2019 8 28 58723 0.2196 0.3463 -0.17875 2019 8 29 58724 0.2196 0.3449 -0.17889 2019 8 30 58725 0.2197 0.3435 -0.17926 2019 8 31 58726 0.2196 0.3420 -0.17986 2019 9 1 58727 0.2196 0.3406 -0.18064 2019 9 2 58728 0.2195 0.3392 -0.18147 2019 9 3 58729 0.2194 0.3378 -0.18222 2019 9 4 58730 0.2193 0.3363 -0.18279 2019 9 5 58731 0.2191 0.3349 -0.18311 2019 9 6 58732 0.2189 0.3335 -0.18321 2019 9 7 58733 0.2187 0.3321 -0.18311 2019 9 8 58734 0.2184 0.3307 -0.18290 2019 9 9 58735 0.2182 0.3293 -0.18264 2019 9 10 58736 0.2179 0.3279 -0.18240 2019 9 11 58737 0.2175 0.3265 -0.18225 2019 9 12 58738 0.2172 0.3251 -0.18222 2019 9 13 58739 0.2168 0.3237 -0.18232 2019 9 14 58740 0.2163 0.3223 -0.18257 2019 9 15 58741 0.2159 0.3209 -0.18296 2019 9 16 58742 0.2154 0.3195 -0.18344 2019 9 17 58743 0.2149 0.3182 -0.18398 2019 9 18 58744 0.2144 0.3168 -0.18454 2019 9 19 58745 0.2138 0.3155 -0.18507 2019 9 20 58746 0.2132 0.3141 -0.18556 2019 9 21 58747 0.2126 0.3128 -0.18599 2019 9 22 58748 0.2120 0.3115 -0.18637 2019 9 23 58749 0.2113 0.3101 -0.18676 2019 9 24 58750 0.2106 0.3088 -0.18721 2019 9 25 58751 0.2099 0.3076 -0.18782 2019 9 26 58752 0.2091 0.3063 -0.18866 2019 9 27 58753 0.2084 0.3050 -0.18978 2019 9 28 58754 0.2076 0.3037 -0.19115 2019 9 29 58755 0.2067 0.3025 -0.19268 2019 9 30 58756 0.2059 0.3013 -0.19426 2019 10 1 58757 0.2050 0.3000 -0.19575 2019 10 2 58758 0.2041 0.2988 -0.19706 2019 10 3 58759 0.2032 0.2976 -0.19817 2019 10 4 58760 0.2022 0.2964 -0.19908 2019 10 5 58761 0.2013 0.2953 -0.19980 2019 10 6 58762 0.2003 0.2941 -0.20043 2019 10 7 58763 0.1992 0.2930 -0.20104 2019 10 8 58764 0.1982 0.2919 -0.20171 2019 10 9 58765 0.1971 0.2908 -0.20246 2019 10 10 58766 0.1960 0.2897 -0.20334 2019 10 11 58767 0.1949 0.2886 -0.20438 2019 10 12 58768 0.1938 0.2875 -0.20556 2019 10 13 58769 0.1926 0.2865 -0.20681 2019 10 14 58770 0.1914 0.2855 -0.20809 2019 10 15 58771 0.1902 0.2845 -0.20939 2019 10 16 58772 0.1890 0.2835 -0.21069 2019 10 17 58773 0.1878 0.2825 -0.21196 2019 10 18 58774 0.1865 0.2816 -0.21318 2019 10 19 58775 0.1852 0.2807 -0.21432 2019 10 20 58776 0.1839 0.2798 -0.21536 2019 10 21 58777 0.1826 0.2789 -0.21637 2019 10 22 58778 0.1813 0.2780 -0.21742 2019 10 23 58779 0.1799 0.2771 -0.21860 2019 10 24 58780 0.1785 0.2763 -0.21999 2019 10 25 58781 0.1772 0.2755 -0.22165 2019 10 26 58782 0.1757 0.2747 -0.22354 2019 10 27 58783 0.1743 0.2740 -0.22553 2019 10 28 58784 0.1729 0.2732 -0.22744 2019 10 29 58785 0.1714 0.2725 -0.22914 2019 10 30 58786 0.1700 0.2718 -0.23056 2019 10 31 58787 0.1685 0.2711 -0.23171 2019 11 1 58788 0.1670 0.2705 -0.23266 2019 11 2 58789 0.1655 0.2699 -0.23351 2019 11 3 58790 0.1639 0.2692 -0.23435 2019 11 4 58791 0.1624 0.2687 -0.23519 2019 11 5 58792 0.1608 0.2681 -0.23601 2019 11 6 58793 0.1593 0.2676 -0.23686 2019 11 7 58794 0.1577 0.2671 -0.23775 2019 11 8 58795 0.1561 0.2666 -0.23868 2019 11 9 58796 0.1545 0.2661 -0.23964 2019 11 10 58797 0.1529 0.2657 -0.24056 2019 11 11 58798 0.1513 0.2653 -0.24147 2019 11 12 58799 0.1496 0.2649 -0.24232 2019 11 13 58800 0.1480 0.2645 -0.24309 2019 11 14 58801 0.1464 0.2642 -0.24377 2019 11 15 58802 0.1447 0.2639 -0.24435 2019 11 16 58803 0.1431 0.2636 -0.24487 2019 11 17 58804 0.1414 0.2633 -0.24525 2019 11 18 58805 0.1397 0.2631 -0.24565 2019 11 19 58806 0.1380 0.2629 -0.24621 2019 11 20 58807 0.1364 0.2627 -0.24694 2019 11 21 58808 0.1347 0.2625 -0.24796 2019 11 22 58809 0.1330 0.2624 -0.24922 2019 11 23 58810 0.1313 0.2623 -0.25066 2019 11 24 58811 0.1296 0.2622 -0.25217 2019 11 25 58812 0.1279 0.2622 -0.25362 2019 11 26 58813 0.1262 0.2621 -0.25487 2019 11 27 58814 0.1245 0.2621 -0.25589 2019 11 28 58815 0.1228 0.2622 -0.25673 2019 11 29 58816 0.1211 0.2622 -0.25743 2019 11 30 58817 0.1194 0.2623 -0.25810 2019 12 1 58818 0.1177 0.2624 -0.25879 2019 12 2 58819 0.1159 0.2625 -0.25953 2019 12 3 58820 0.1142 0.2627 -0.26037 2019 12 4 58821 0.1125 0.2629 -0.26136 2019 12 5 58822 0.1108 0.2631 -0.26248 2019 12 6 58823 0.1092 0.2633 -0.26364 2019 12 7 58824 0.1075 0.2636 -0.26485 2019 12 8 58825 0.1058 0.2639 -0.26610 2019 12 9 58826 0.1041 0.2642 -0.26730 2019 12 10 58827 0.1024 0.2645 -0.26848 2019 12 11 58828 0.1007 0.2649 -0.26953 2019 12 12 58829 0.0991 0.2653 -0.27046 2019 12 13 58830 0.0974 0.2657 -0.27125 2019 12 14 58831 0.0958 0.2662 -0.27197 2019 12 15 58832 0.0941 0.2666 -0.27265 2019 12 16 58833 0.0925 0.2671 -0.27339 2019 12 17 58834 0.0909 0.2676 -0.27435 2019 12 18 58835 0.0892 0.2682 -0.27553 2019 12 19 58836 0.0876 0.2688 -0.27683 2019 12 20 58837 0.0860 0.2694 -0.27819 2019 12 21 58838 0.0845 0.2700 -0.27958 2019 12 22 58839 0.0829 0.2706 -0.28089 2019 12 23 58840 0.0813 0.2713 -0.28200 2019 12 24 58841 0.0798 0.2720 -0.28283 2019 12 25 58842 0.0782 0.2727 -0.28342 2019 12 26 58843 0.0767 0.2735 -0.28384 2019 12 27 58844 0.0752 0.2742 -0.28412 2019 12 28 58845 0.0737 0.2750 -0.28437 2019 12 29 58846 0.0722 0.2758 -0.28460 2019 12 30 58847 0.0708 0.2767 -0.28491 2019 12 31 58848 0.0693 0.2775 -0.28535 2020 1 1 58849 0.0679 0.2784 -0.28591 2020 1 2 58850 0.0665 0.2793 -0.28660 2020 1 3 58851 0.0651 0.2803 -0.28734 2020 1 4 58852 0.0637 0.2812 -0.28813 2020 1 5 58853 0.0623 0.2822 -0.28897 2020 1 6 58854 0.0610 0.2832 -0.28977 2020 1 7 58855 0.0596 0.2842 -0.29048 2020 1 8 58856 0.0583 0.2852 -0.29111 2020 1 9 58857 0.0570 0.2863 -0.29168 2020 1 10 58858 0.0558 0.2874 -0.29217 2020 1 11 58859 0.0545 0.2885 -0.29264 2020 1 12 58860 0.0533 0.2896 -0.29322 2020 1 13 58861 0.0521 0.2907 -0.29396 2020 1 14 58862 0.0509 0.2919 -0.29488 2020 1 15 58863 0.0497 0.2931 -0.29601 2020 1 16 58864 0.0486 0.2943 -0.29732 2020 1 17 58865 0.0475 0.2955 -0.29866 2020 1 18 58866 0.0464 0.2967 -0.29992 2020 1 19 58867 0.0453 0.2979 -0.30102 2020 1 20 58868 0.0443 0.2992 -0.30192 2020 1 21 58869 0.0433 0.3005 -0.30256 2020 1 22 58870 0.0423 0.3018 -0.30299 2020 1 23 58871 0.0413 0.3031 -0.30329 2020 1 24 58872 0.0403 0.3044 -0.30351 2020 1 25 58873 0.0394 0.3058 -0.30372 2020 1 26 58874 0.0385 0.3071 -0.30396 2020 1 27 58875 0.0376 0.3085 -0.30431 2020 1 28 58876 0.0368 0.3099 -0.30480 2020 1 29 58877 0.0360 0.3113 -0.30534 2020 1 30 58878 0.0352 0.3127 -0.30585 2020 1 31 58879 0.0344 0.3141 -0.30637 2020 2 1 58880 0.0337 0.3156 -0.30692 2020 2 2 58881 0.0330 0.3170 -0.30744 2020 2 3 58882 0.0323 0.3185 -0.30791 2020 2 4 58883 0.0317 0.3199 -0.30837 2020 2 5 58884 0.0310 0.3214 -0.30876 2020 2 6 58885 0.0305 0.3229 -0.30907 2020 2 7 58886 0.0299 0.3244 -0.30935 2020 2 8 58887 0.0294 0.3259 -0.30967 2020 2 9 58888 0.0289 0.3275 -0.31016 2020 2 10 58889 0.0284 0.3290 -0.31091 2020 2 11 58890 0.0279 0.3305 -0.31192 2020 2 12 58891 0.0275 0.3321 -0.31311 2020 2 13 58892 0.0271 0.3336 -0.31436 2020 2 14 58893 0.0268 0.3352 -0.31556 2020 2 15 58894 0.0265 0.3368 -0.31656 2020 2 16 58895 0.0262 0.3383 -0.31739 2020 2 17 58896 0.0259 0.3399 -0.31803 2020 2 18 58897 0.0257 0.3415 -0.31850 2020 2 19 58898 0.0255 0.3431 -0.31880 2020 2 20 58899 0.0253 0.3447 -0.31907 2020 2 21 58900 0.0251 0.3463 -0.31939 2020 2 22 58901 0.0250 0.3479 -0.31980 2020 2 23 58902 0.0250 0.3495 -0.32031 2020 2 24 58903 0.0249 0.3511 -0.32090 2020 2 25 58904 0.0249 0.3527 -0.32157 2020 2 26 58905 0.0249 0.3543 -0.32232 2020 2 27 58906 0.0250 0.3559 -0.32315 2020 2 28 58907 0.0251 0.3575 -0.32405 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) 58516 -106.68 0.55 -7.94 0.14 58517 -106.23 0.68 -8.05 0.18 58518 -105.83 0.68 -8.07 0.18 58519 -105.62 0.85 -7.95 0.22 58520 -105.63 0.82 -7.82 0.22 58521 -105.78 0.82 -7.82 0.22 58522 -105.93 0.82 -7.94 0.22 58523 -105.99 0.56 -8.07 0.24 58524 -105.97 0.67 -8.17 0.19 58525 -105.98 0.67 -8.27 0.19 58526 -106.04 0.77 -8.40 0.12 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58516 0.230 0.219 -0.149 0.137 58517 0.255 0.271 -0.166 0.179 58518 0.287 0.271 -0.185 0.179 58519 0.314 0.337 -0.203 0.218 58520 0.327 0.327 -0.215 0.224 58521 0.328 0.327 -0.220 0.224 58522 0.322 0.327 -0.218 0.224 58523 0.315 0.221 -0.209 0.243 58524 0.310 0.266 -0.196 0.192 58525 0.305 0.266 -0.179 0.192 58526 0.300 0.305 -0.161 0.124 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).