********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 15 June 2017 Vol. XXX No. 024 ______________________________________________________________________ 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 = +0.4 seconds beginning 30 Mar 2017 at 0000 UTC = +0.3 seconds beginning 29 Jun 2017 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. * * * * We are currently not able to receive email at * * ser7@maia.usno.navy.mil. Questions and enquiries can now be * * directed to the following email account: navobsy_eop.fct@navy.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 17 6 9 57913 0.10840 .00009 0.45782 .00009 0.371959 0.000014 17 6 10 57914 0.10992 .00009 0.45754 .00009 0.371456 0.000013 17 6 11 57915 0.11147 .00009 0.45727 .00009 0.371027 0.000018 17 6 12 57916 0.11299 .00009 0.45713 .00009 0.370624 0.000015 17 6 13 57917 0.11456 .00009 0.45725 .00009 0.370237 0.000014 17 6 14 57918 0.11631 .00009 0.45738 .00009 0.369819 0.000013 17 6 15 57919 0.11829 .00009 0.45729 .00009 0.369314 0.000013 _______________________________________________________________________ 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 = 0.1133 + 0.0383 cos A + 0.1107 sin A - 0.0347 cos C - 0.0130 sin C y = 0.3598 + 0.1038 cos A - 0.0284 sin A - 0.0130 cos C + 0.0347 sin C UT1-UTC = 0.3888 - 0.00114 (MJD - 57927) - (UT2-UT1) where A = 2*pi*(MJD-57919)/365.25 and C = 2*pi*(MJD-57919)/435. TAI-UTC(MJD 57920) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57919)**0.80 S t = 0.00025 (MJD-57919)**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) 2017 6 16 57920 0.1203 0.4572 0.36870 2017 6 17 57921 0.1223 0.4570 0.36800 2017 6 18 57922 0.1241 0.4568 0.36723 2017 6 19 57923 0.1259 0.4566 0.36642 2017 6 20 57924 0.1276 0.4564 0.36559 2017 6 21 57925 0.1293 0.4562 0.36480 2017 6 22 57926 0.1309 0.4559 0.36411 2017 6 23 57927 0.1325 0.4557 0.36356 2017 6 24 57928 0.1341 0.4554 0.36314 2017 6 25 57929 0.1357 0.4551 0.36279 2017 6 26 57930 0.1373 0.4547 0.36245 2017 6 27 57931 0.1388 0.4543 0.36203 2017 6 28 57932 0.1403 0.4538 0.36150 2017 6 29 57933 0.1419 0.4533 0.36090 2017 6 30 57934 0.1433 0.4528 0.36025 2017 7 1 57935 0.1448 0.4523 0.35959 2017 7 2 57936 0.1463 0.4518 0.35895 2017 7 3 57937 0.1478 0.4513 0.35837 2017 7 4 57938 0.1493 0.4507 0.35786 2017 7 5 57939 0.1508 0.4501 0.35744 2017 7 6 57940 0.1523 0.4495 0.35713 2017 7 7 57941 0.1537 0.4489 0.35692 2017 7 8 57942 0.1552 0.4482 0.35677 2017 7 9 57943 0.1566 0.4475 0.35665 2017 7 10 57944 0.1580 0.4468 0.35652 2017 7 11 57945 0.1594 0.4461 0.35633 2017 7 12 57946 0.1608 0.4453 0.35604 2017 7 13 57947 0.1621 0.4446 0.35562 2017 7 14 57948 0.1635 0.4438 0.35507 2017 7 15 57949 0.1648 0.4430 0.35440 2017 7 16 57950 0.1661 0.4421 0.35366 2017 7 17 57951 0.1674 0.4413 0.35288 2017 7 18 57952 0.1686 0.4404 0.35212 2017 7 19 57953 0.1699 0.4395 0.35145 2017 7 20 57954 0.1711 0.4386 0.35090 2017 7 21 57955 0.1723 0.4376 0.35045 2017 7 22 57956 0.1735 0.4367 0.35008 2017 7 23 57957 0.1747 0.4357 0.34971 2017 7 24 57958 0.1758 0.4347 0.34928 2017 7 25 57959 0.1769 0.4337 0.34876 2017 7 26 57960 0.1781 0.4326 0.34815 2017 7 27 57961 0.1792 0.4316 0.34748 2017 7 28 57962 0.1802 0.4305 0.34680 2017 7 29 57963 0.1813 0.4294 0.34617 2017 7 30 57964 0.1823 0.4283 0.34562 2017 7 31 57965 0.1833 0.4272 0.34519 2017 8 1 57966 0.1843 0.4260 0.34488 2017 8 2 57967 0.1852 0.4249 0.34469 2017 8 3 57968 0.1862 0.4237 0.34459 2017 8 4 57969 0.1871 0.4225 0.34457 2017 8 5 57970 0.1880 0.4213 0.34457 2017 8 6 57971 0.1888 0.4201 0.34456 2017 8 7 57972 0.1896 0.4188 0.34449 2017 8 8 57973 0.1905 0.4176 0.34431 2017 8 9 57974 0.1912 0.4163 0.34400 2017 8 10 57975 0.1920 0.4150 0.34354 2017 8 11 57976 0.1927 0.4137 0.34294 2017 8 12 57977 0.1935 0.4124 0.34226 2017 8 13 57978 0.1941 0.4111 0.34153 2017 8 14 57979 0.1948 0.4098 0.34081 2017 8 15 57980 0.1954 0.4084 0.34015 2017 8 16 57981 0.1960 0.4071 0.33958 2017 8 17 57982 0.1966 0.4057 0.33912 2017 8 18 57983 0.1972 0.4044 0.33872 2017 8 19 57984 0.1977 0.4030 0.33834 2017 8 20 57985 0.1982 0.4016 0.33791 2017 8 21 57986 0.1987 0.4002 0.33739 2017 8 22 57987 0.1991 0.3988 0.33676 2017 8 23 57988 0.1995 0.3974 0.33602 2017 8 24 57989 0.1999 0.3959 0.33524 2017 8 25 57990 0.2003 0.3945 0.33445 2017 8 26 57991 0.2006 0.3931 0.33371 2017 8 27 57992 0.2009 0.3916 0.33305 2017 8 28 57993 0.2012 0.3902 0.33248 2017 8 29 57994 0.2015 0.3887 0.33201 2017 8 30 57995 0.2017 0.3872 0.33163 2017 8 31 57996 0.2019 0.3858 0.33131 2017 9 1 57997 0.2021 0.3843 0.33101 2017 9 2 57998 0.2022 0.3828 0.33069 2017 9 3 57999 0.2023 0.3813 0.33031 2017 9 4 58000 0.2024 0.3798 0.32983 2017 9 5 58001 0.2024 0.3784 0.32919 2017 9 6 58002 0.2025 0.3769 0.32839 2017 9 7 58003 0.2025 0.3754 0.32742 2017 9 8 58004 0.2024 0.3739 0.32632 2017 9 9 58005 0.2024 0.3724 0.32514 2017 9 10 58006 0.2023 0.3709 0.32397 2017 9 11 58007 0.2022 0.3694 0.32284 2017 9 12 58008 0.2020 0.3679 0.32182 2017 9 13 58009 0.2018 0.3664 0.32089 2017 9 14 58010 0.2016 0.3649 0.32004 2017 9 15 58011 0.2014 0.3634 0.31921 2017 9 16 58012 0.2011 0.3619 0.31834 2017 9 17 58013 0.2009 0.3605 0.31738 2017 9 18 58014 0.2005 0.3590 0.31630 2017 9 19 58015 0.2002 0.3575 0.31509 2017 9 20 58016 0.1998 0.3560 0.31380 2017 9 21 58017 0.1994 0.3545 0.31247 2017 9 22 58018 0.1990 0.3531 0.31117 2017 9 23 58019 0.1985 0.3516 0.30994 2017 9 24 58020 0.1980 0.3502 0.30880 2017 9 25 58021 0.1975 0.3487 0.30777 2017 9 26 58022 0.1970 0.3473 0.30684 2017 9 27 58023 0.1964 0.3459 0.30599 2017 9 28 58024 0.1958 0.3444 0.30519 2017 9 29 58025 0.1952 0.3430 0.30438 2017 9 30 58026 0.1946 0.3416 0.30352 2017 10 1 58027 0.1939 0.3402 0.30257 2017 10 2 58028 0.1932 0.3388 0.30146 2017 10 3 58029 0.1925 0.3374 0.30018 2017 10 4 58030 0.1917 0.3361 0.29872 2017 10 5 58031 0.1909 0.3347 0.29711 2017 10 6 58032 0.1901 0.3333 0.29539 2017 10 7 58033 0.1893 0.3320 0.29364 2017 10 8 58034 0.1885 0.3307 0.29193 2017 10 9 58035 0.1876 0.3294 0.29033 2017 10 10 58036 0.1867 0.3281 0.28886 2017 10 11 58037 0.1858 0.3268 0.28751 2017 10 12 58038 0.1848 0.3255 0.28621 2017 10 13 58039 0.1838 0.3242 0.28493 2017 10 14 58040 0.1828 0.3230 0.28358 2017 10 15 58041 0.1818 0.3218 0.28214 2017 10 16 58042 0.1808 0.3205 0.28060 2017 10 17 58043 0.1797 0.3193 0.27897 2017 10 18 58044 0.1786 0.3181 0.27729 2017 10 19 58045 0.1775 0.3170 0.27563 2017 10 20 58046 0.1764 0.3158 0.27402 2017 10 21 58047 0.1752 0.3147 0.27251 2017 10 22 58048 0.1741 0.3136 0.27112 2017 10 23 58049 0.1729 0.3125 0.26984 2017 10 24 58050 0.1717 0.3114 0.26867 2017 10 25 58051 0.1704 0.3103 0.26758 2017 10 26 58052 0.1692 0.3092 0.26652 2017 10 27 58053 0.1679 0.3082 0.26544 2017 10 28 58054 0.1666 0.3072 0.26431 2017 10 29 58055 0.1653 0.3062 0.26307 2017 10 30 58056 0.1640 0.3052 0.26169 2017 10 31 58057 0.1627 0.3043 0.26016 2017 11 1 58058 0.1613 0.3033 0.25847 2017 11 2 58059 0.1599 0.3024 0.25664 2017 11 3 58060 0.1585 0.3015 0.25474 2017 11 4 58061 0.1571 0.3007 0.25285 2017 11 5 58062 0.1557 0.2998 0.25105 2017 11 6 58063 0.1543 0.2990 0.24939 2017 11 7 58064 0.1528 0.2982 0.24788 2017 11 8 58065 0.1513 0.2974 0.24647 2017 11 9 58066 0.1499 0.2966 0.24510 2017 11 10 58067 0.1484 0.2959 0.24372 2017 11 11 58068 0.1469 0.2952 0.24227 2017 11 12 58069 0.1453 0.2945 0.24074 2017 11 13 58070 0.1438 0.2938 0.23914 2017 11 14 58071 0.1423 0.2931 0.23751 2017 11 15 58072 0.1407 0.2925 0.23588 2017 11 16 58073 0.1391 0.2919 0.23431 2017 11 17 58074 0.1376 0.2913 0.23284 2017 11 18 58075 0.1360 0.2908 0.23147 2017 11 19 58076 0.1344 0.2903 0.23023 2017 11 20 58077 0.1328 0.2897 0.22911 2017 11 21 58078 0.1312 0.2893 0.22809 2017 11 22 58079 0.1296 0.2888 0.22712 2017 11 23 58080 0.1279 0.2884 0.22617 2017 11 24 58081 0.1263 0.2880 0.22519 2017 11 25 58082 0.1247 0.2876 0.22414 2017 11 26 58083 0.1230 0.2872 0.22299 2017 11 27 58084 0.1214 0.2869 0.22169 2017 11 28 58085 0.1197 0.2866 0.22026 2017 11 29 58086 0.1180 0.2863 0.21868 2017 11 30 58087 0.1164 0.2861 0.21701 2017 12 1 58088 0.1147 0.2858 0.21531 2017 12 2 58089 0.1130 0.2856 0.21365 2017 12 3 58090 0.1114 0.2855 0.21209 2017 12 4 58091 0.1097 0.2853 0.21068 2017 12 5 58092 0.1080 0.2852 0.20940 2017 12 6 58093 0.1063 0.2851 0.20819 2017 12 7 58094 0.1047 0.2850 0.20699 2017 12 8 58095 0.1030 0.2850 0.20574 2017 12 9 58096 0.1013 0.2850 0.20442 2017 12 10 58097 0.0996 0.2850 0.20304 2017 12 11 58098 0.0980 0.2850 0.20163 2017 12 12 58099 0.0963 0.2851 0.20025 2017 12 13 58100 0.0946 0.2851 0.19893 2017 12 14 58101 0.0930 0.2853 0.19771 2017 12 15 58102 0.0913 0.2854 0.19662 2017 12 16 58103 0.0896 0.2856 0.19567 2017 12 17 58104 0.0880 0.2858 0.19485 2017 12 18 58105 0.0863 0.2860 0.19414 2017 12 19 58106 0.0847 0.2862 0.19352 2017 12 20 58107 0.0830 0.2865 0.19293 2017 12 21 58108 0.0814 0.2868 0.19233 2017 12 22 58109 0.0798 0.2871 0.19166 2017 12 23 58110 0.0782 0.2874 0.19089 2017 12 24 58111 0.0766 0.2878 0.18997 2017 12 25 58112 0.0750 0.2882 0.18889 2017 12 26 58113 0.0734 0.2886 0.18766 2017 12 27 58114 0.0718 0.2891 0.18630 2017 12 28 58115 0.0702 0.2896 0.18486 2017 12 29 58116 0.0686 0.2901 0.18340 2017 12 30 58117 0.0671 0.2906 0.18199 2017 12 31 58118 0.0656 0.2911 0.18068 2018 1 1 58119 0.0640 0.2917 0.17948 2018 1 2 58120 0.0625 0.2923 0.17836 2018 1 3 58121 0.0610 0.2929 0.17724 2018 1 4 58122 0.0595 0.2936 0.17606 2018 1 5 58123 0.0580 0.2942 0.17477 2018 1 6 58124 0.0566 0.2949 0.17337 2018 1 7 58125 0.0551 0.2956 0.17189 2018 1 8 58126 0.0537 0.2964 0.17039 2018 1 9 58127 0.0523 0.2971 0.16892 2018 1 10 58128 0.0509 0.2979 0.16752 2018 1 11 58129 0.0495 0.2987 0.16621 2018 1 12 58130 0.0481 0.2996 0.16501 2018 1 13 58131 0.0467 0.3004 0.16390 2018 1 14 58132 0.0454 0.3013 0.16288 2018 1 15 58133 0.0441 0.3022 0.16193 2018 1 16 58134 0.0428 0.3031 0.16103 2018 1 17 58135 0.0415 0.3040 0.16015 2018 1 18 58136 0.0402 0.3050 0.15922 2018 1 19 58137 0.0390 0.3060 0.15821 2018 1 20 58138 0.0378 0.3070 0.15710 2018 1 21 58139 0.0366 0.3080 0.15589 2018 1 22 58140 0.0354 0.3090 0.15458 2018 1 23 58141 0.0342 0.3101 0.15321 2018 1 24 58142 0.0331 0.3112 0.15181 2018 1 25 58143 0.0319 0.3123 0.15043 2018 1 26 58144 0.0308 0.3134 0.14912 2018 1 27 58145 0.0298 0.3145 0.14789 2018 1 28 58146 0.0287 0.3157 0.14675 2018 1 29 58147 0.0277 0.3168 0.14561 2018 1 30 58148 0.0267 0.3180 0.14441 2018 1 31 58149 0.0257 0.3192 0.14310 2018 2 1 58150 0.0247 0.3205 0.14164 2018 2 2 58151 0.0238 0.3217 0.14001 2018 2 3 58152 0.0229 0.3229 0.13827 2018 2 4 58153 0.0220 0.3242 0.13647 2018 2 5 58154 0.0211 0.3255 0.13468 2018 2 6 58155 0.0203 0.3268 0.13294 2018 2 7 58156 0.0195 0.3281 0.13131 2018 2 8 58157 0.0187 0.3294 0.12988 2018 2 9 58158 0.0179 0.3308 0.12863 2018 2 10 58159 0.0172 0.3321 0.12750 2018 2 11 58160 0.0164 0.3335 0.12647 2018 2 12 58161 0.0158 0.3348 0.12551 2018 2 13 58162 0.0151 0.3362 0.12456 2018 2 14 58163 0.0145 0.3376 0.12357 2018 2 15 58164 0.0139 0.3390 0.12251 2018 2 16 58165 0.0133 0.3405 0.12137 2018 2 17 58166 0.0127 0.3419 0.12014 2018 2 18 58167 0.0122 0.3433 0.11876 2018 2 19 58168 0.0117 0.3448 0.11722 2018 2 20 58169 0.0112 0.3462 0.11561 2018 2 21 58170 0.0108 0.3477 0.11393 2018 2 22 58171 0.0104 0.3492 0.11224 2018 2 23 58172 0.0100 0.3507 0.11063 2018 2 24 58173 0.0096 0.3522 0.10914 2018 2 25 58174 0.0093 0.3537 0.10768 2018 2 26 58175 0.0090 0.3552 0.10625 2018 2 27 58176 0.0087 0.3567 0.10479 2018 2 28 58177 0.0085 0.3582 0.10321 2018 3 1 58178 0.0083 0.3597 0.10148 2018 3 2 58179 0.0081 0.3612 0.09963 2018 3 3 58180 0.0079 0.3628 0.09771 2018 3 4 58181 0.0078 0.3643 0.09578 2018 3 5 58182 0.0077 0.3658 0.09391 2018 3 6 58183 0.0077 0.3674 0.09217 2018 3 7 58184 0.0076 0.3689 0.09060 2018 3 8 58185 0.0076 0.3704 0.08920 2018 3 9 58186 0.0076 0.3720 0.08790 2018 3 10 58187 0.0077 0.3735 0.08670 2018 3 11 58188 0.0077 0.3751 0.08554 2018 3 12 58189 0.0079 0.3766 0.08440 2018 3 13 58190 0.0080 0.3782 0.08325 2018 3 14 58191 0.0082 0.3797 0.08199 2018 3 15 58192 0.0083 0.3812 0.08056 2018 3 16 58193 0.0086 0.3828 0.07897 2018 3 17 58194 0.0088 0.3843 0.07719 2018 3 18 58195 0.0091 0.3859 0.07533 2018 3 19 58196 0.0094 0.3874 0.07340 2018 3 20 58197 0.0097 0.3889 0.07142 2018 3 21 58198 0.0101 0.3904 0.06948 2018 3 22 58199 0.0105 0.3920 0.06765 2018 3 23 58200 0.0109 0.3935 0.06594 2018 3 24 58201 0.0114 0.3950 0.06434 2018 3 25 58202 0.0118 0.3965 0.06284 2018 3 26 58203 0.0124 0.3980 0.06134 2018 3 27 58204 0.0129 0.3995 0.05982 2018 3 28 58205 0.0134 0.4010 0.05823 2018 3 29 58206 0.0140 0.4024 0.05652 2018 3 30 58207 0.0146 0.4039 0.05467 2018 3 31 58208 0.0153 0.4054 0.05272 2018 4 1 58209 0.0160 0.4068 0.05078 2018 4 2 58210 0.0167 0.4083 0.04894 2018 4 3 58211 0.0174 0.4097 0.04715 2018 4 4 58212 0.0181 0.4111 0.04543 2018 4 5 58213 0.0189 0.4125 0.04386 2018 4 6 58214 0.0197 0.4139 0.04242 2018 4 7 58215 0.0205 0.4153 0.04102 2018 4 8 58216 0.0214 0.4167 0.03966 2018 4 9 58217 0.0223 0.4180 0.03829 2018 4 10 58218 0.0232 0.4194 0.03688 2018 4 11 58219 0.0241 0.4207 0.03541 2018 4 12 58220 0.0250 0.4220 0.03385 2018 4 13 58221 0.0260 0.4234 0.03221 2018 4 14 58222 0.0270 0.4246 0.03045 2018 4 15 58223 0.0280 0.4259 0.02857 2018 4 16 58224 0.0291 0.4272 0.02662 2018 4 17 58225 0.0301 0.4284 0.02470 2018 4 18 58226 0.0312 0.4297 0.02284 2018 4 19 58227 0.0323 0.4309 0.02105 2018 4 20 58228 0.0335 0.4321 0.01935 2018 4 21 58229 0.0346 0.4333 0.01776 2018 4 22 58230 0.0358 0.4344 0.01625 2018 4 23 58231 0.0370 0.4356 0.01473 2018 4 24 58232 0.0382 0.4367 0.01315 2018 4 25 58233 0.0394 0.4378 0.01147 2018 4 26 58234 0.0407 0.4389 0.00967 2018 4 27 58235 0.0420 0.4400 0.00777 2018 4 28 58236 0.0433 0.4411 0.00587 2018 4 29 58237 0.0446 0.4421 0.00405 2018 4 30 58238 0.0459 0.4431 0.00232 2018 5 1 58239 0.0473 0.4441 0.00076 2018 5 2 58240 0.0486 0.4451 -0.00062 2018 5 3 58241 0.0500 0.4461 -0.00188 2018 5 4 58242 0.0514 0.4470 -0.00310 2018 5 5 58243 0.0528 0.4479 -0.00430 2018 5 6 58244 0.0542 0.4488 -0.00550 2018 5 7 58245 0.0557 0.4497 -0.00674 2018 5 8 58246 0.0572 0.4505 -0.00802 2018 5 9 58247 0.0586 0.4513 -0.00938 2018 5 10 58248 0.0601 0.4521 -0.01084 2018 5 11 58249 0.0616 0.4529 -0.01243 2018 5 12 58250 0.0631 0.4537 -0.01412 2018 5 13 58251 0.0647 0.4544 -0.01589 2018 5 14 58252 0.0662 0.4551 -0.01766 2018 5 15 58253 0.0678 0.4558 -0.01932 2018 5 16 58254 0.0693 0.4565 -0.02083 2018 5 17 58255 0.0709 0.4571 -0.02219 2018 5 18 58256 0.0725 0.4577 -0.02340 2018 5 19 58257 0.0741 0.4583 -0.02447 2018 5 20 58258 0.0757 0.4589 -0.02546 2018 5 21 58259 0.0773 0.4594 -0.02645 2018 5 22 58260 0.0789 0.4599 -0.02749 2018 5 23 58261 0.0806 0.4604 -0.02857 2018 5 24 58262 0.0822 0.4609 -0.02973 2018 5 25 58263 0.0838 0.4613 -0.03096 2018 5 26 58264 0.0855 0.4617 -0.03218 2018 5 27 58265 0.0871 0.4621 -0.03333 2018 5 28 58266 0.0888 0.4625 -0.03433 2018 5 29 58267 0.0905 0.4628 -0.03516 2018 5 30 58268 0.0921 0.4631 -0.03583 2018 5 31 58269 0.0938 0.4634 -0.03635 2018 6 1 58270 0.0955 0.4637 -0.03678 2018 6 2 58271 0.0972 0.4639 -0.03720 2018 6 3 58272 0.0989 0.4641 -0.03769 2018 6 4 58273 0.1005 0.4643 -0.03823 2018 6 5 58274 0.1022 0.4644 -0.03885 2018 6 6 58275 0.1039 0.4646 -0.03964 2018 6 7 58276 0.1056 0.4647 -0.04062 2018 6 8 58277 0.1073 0.4647 -0.04170 2018 6 9 58278 0.1090 0.4648 -0.04284 2018 6 10 58279 0.1107 0.4648 -0.04404 2018 6 11 58280 0.1123 0.4648 -0.04526 2018 6 12 58281 0.1140 0.4648 -0.04646 2018 6 13 58282 0.1157 0.4647 -0.04757 2018 6 14 58283 0.1174 0.4646 -0.04860 2018 6 15 58284 0.1191 0.4645 -0.04949 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) 57897 -99.55 0.30 -12.55 0.02 57898 -99.99 0.30 -12.63 0.02 57899 -100.56 0.30 -12.87 0.02 57900 -100.88 0.30 -13.05 0.03 57901 -100.74 0.30 -13.03 0.03 57902 -100.28 0.30 -12.94 0.03 57903 -99.90 0.30 -12.90 0.03 57904 -99.94 0.30 -12.90 0.03 57905 -100.35 0.30 -12.85 0.03 57906 -100.72 0.30 -12.78 0.03 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57897 -0.137 0.119 0.127 0.020 57898 -0.131 0.119 0.140 0.020 57899 -0.138 0.119 0.154 0.020 57900 -0.153 0.119 0.145 0.030 57901 -0.160 0.119 0.130 0.030 57902 -0.147 0.119 0.110 0.030 57903 -0.121 0.119 0.108 0.030 57904 -0.104 0.119 0.109 0.030 57905 -0.100 0.119 0.125 0.030 57906 -0.105 0.119 0.150 0.030 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).