********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 22 June 2017 Vol. XXX No. 025 ______________________________________________________________________ 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 16 57920 0.12052 .00009 0.45711 .00009 0.368734 0.000017 17 6 17 57921 0.12249 .00009 0.45673 .00009 0.368061 0.000018 17 6 18 57922 0.12414 .00009 0.45626 .00009 0.367277 0.000012 17 6 19 57923 0.12581 .00009 0.45578 .00009 0.366452 0.000007 17 6 20 57924 0.12789 .00009 0.45537 .00009 0.365621 0.000007 17 6 21 57925 0.13043 .00009 0.45504 .00009 0.364791 0.000006 17 6 22 57926 0.13318 .00009 0.45478 .00009 0.364047 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 = 0.1137 + 0.0521 cos A + 0.1090 sin A - 0.0347 cos C - 0.0128 sin C y = 0.3591 + 0.1024 cos A - 0.0412 sin A - 0.0128 cos C + 0.0347 sin C UT1-UTC = 0.3810 - 0.00114 (MJD - 57934) - (UT2-UT1) where A = 2*pi*(MJD-57926)/365.25 and C = 2*pi*(MJD-57926)/435. TAI-UTC(MJD 57927) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57926)**0.80 S t = 0.00025 (MJD-57926)**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 23 57927 0.1357 0.4546 0.36346 2017 6 24 57928 0.1379 0.4545 0.36301 2017 6 25 57929 0.1398 0.4543 0.36262 2017 6 26 57930 0.1416 0.4541 0.36222 2017 6 27 57931 0.1432 0.4538 0.36176 2017 6 28 57932 0.1447 0.4533 0.36125 2017 6 29 57933 0.1463 0.4528 0.36069 2017 6 30 57934 0.1478 0.4523 0.36012 2017 7 1 57935 0.1493 0.4518 0.35957 2017 7 2 57936 0.1508 0.4513 0.35908 2017 7 3 57937 0.1523 0.4508 0.35869 2017 7 4 57938 0.1538 0.4502 0.35842 2017 7 5 57939 0.1553 0.4496 0.35827 2017 7 6 57940 0.1568 0.4489 0.35823 2017 7 7 57941 0.1582 0.4482 0.35829 2017 7 8 57942 0.1595 0.4475 0.35839 2017 7 9 57943 0.1609 0.4468 0.35849 2017 7 10 57944 0.1624 0.4460 0.35855 2017 7 11 57945 0.1638 0.4452 0.35851 2017 7 12 57946 0.1653 0.4444 0.35834 2017 7 13 57947 0.1667 0.4436 0.35801 2017 7 14 57948 0.1681 0.4428 0.35751 2017 7 15 57949 0.1695 0.4420 0.35685 2017 7 16 57950 0.1708 0.4411 0.35609 2017 7 17 57951 0.1720 0.4402 0.35530 2017 7 18 57952 0.1733 0.4393 0.35452 2017 7 19 57953 0.1745 0.4383 0.35380 2017 7 20 57954 0.1757 0.4374 0.35319 2017 7 21 57955 0.1769 0.4364 0.35270 2017 7 22 57956 0.1781 0.4354 0.35227 2017 7 23 57957 0.1793 0.4344 0.35185 2017 7 24 57958 0.1804 0.4334 0.35137 2017 7 25 57959 0.1815 0.4323 0.35081 2017 7 26 57960 0.1826 0.4312 0.35016 2017 7 27 57961 0.1837 0.4301 0.34946 2017 7 28 57962 0.1847 0.4290 0.34876 2017 7 29 57963 0.1857 0.4279 0.34811 2017 7 30 57964 0.1867 0.4267 0.34754 2017 7 31 57965 0.1877 0.4256 0.34708 2017 8 1 57966 0.1887 0.4244 0.34673 2017 8 2 57967 0.1896 0.4232 0.34649 2017 8 3 57968 0.1905 0.4220 0.34632 2017 8 4 57969 0.1914 0.4207 0.34621 2017 8 5 57970 0.1923 0.4195 0.34612 2017 8 6 57971 0.1931 0.4182 0.34600 2017 8 7 57972 0.1939 0.4170 0.34581 2017 8 8 57973 0.1947 0.4157 0.34550 2017 8 9 57974 0.1954 0.4144 0.34507 2017 8 10 57975 0.1962 0.4131 0.34450 2017 8 11 57976 0.1969 0.4117 0.34379 2017 8 12 57977 0.1976 0.4104 0.34300 2017 8 13 57978 0.1982 0.4090 0.34217 2017 8 14 57979 0.1988 0.4077 0.34137 2017 8 15 57980 0.1994 0.4063 0.34062 2017 8 16 57981 0.2000 0.4049 0.33998 2017 8 17 57982 0.2006 0.4035 0.33944 2017 8 18 57983 0.2011 0.4021 0.33896 2017 8 19 57984 0.2016 0.4007 0.33850 2017 8 20 57985 0.2020 0.3993 0.33799 2017 8 21 57986 0.2025 0.3979 0.33739 2017 8 22 57987 0.2029 0.3964 0.33667 2017 8 23 57988 0.2033 0.3950 0.33586 2017 8 24 57989 0.2036 0.3935 0.33500 2017 8 25 57990 0.2039 0.3920 0.33415 2017 8 26 57991 0.2042 0.3906 0.33335 2017 8 27 57992 0.2045 0.3891 0.33264 2017 8 28 57993 0.2047 0.3876 0.33204 2017 8 29 57994 0.2049 0.3861 0.33155 2017 8 30 57995 0.2051 0.3846 0.33116 2017 8 31 57996 0.2053 0.3831 0.33084 2017 9 1 57997 0.2054 0.3816 0.33055 2017 9 2 57998 0.2055 0.3801 0.33024 2017 9 3 57999 0.2055 0.3786 0.32987 2017 9 4 58000 0.2056 0.3771 0.32939 2017 9 5 58001 0.2056 0.3756 0.32876 2017 9 6 58002 0.2056 0.3741 0.32795 2017 9 7 58003 0.2055 0.3726 0.32697 2017 9 8 58004 0.2054 0.3711 0.32586 2017 9 9 58005 0.2053 0.3696 0.32467 2017 9 10 58006 0.2052 0.3681 0.32348 2017 9 11 58007 0.2050 0.3665 0.32235 2017 9 12 58008 0.2048 0.3650 0.32132 2017 9 13 58009 0.2046 0.3635 0.32040 2017 9 14 58010 0.2043 0.3620 0.31955 2017 9 15 58011 0.2040 0.3605 0.31873 2017 9 16 58012 0.2037 0.3590 0.31788 2017 9 17 58013 0.2034 0.3575 0.31694 2017 9 18 58014 0.2030 0.3560 0.31587 2017 9 19 58015 0.2026 0.3545 0.31469 2017 9 20 58016 0.2022 0.3530 0.31342 2017 9 21 58017 0.2017 0.3515 0.31211 2017 9 22 58018 0.2013 0.3501 0.31083 2017 9 23 58019 0.2008 0.3486 0.30961 2017 9 24 58020 0.2002 0.3471 0.30848 2017 9 25 58021 0.1996 0.3457 0.30747 2017 9 26 58022 0.1991 0.3442 0.30655 2017 9 27 58023 0.1984 0.3428 0.30570 2017 9 28 58024 0.1978 0.3413 0.30490 2017 9 29 58025 0.1971 0.3399 0.30410 2017 9 30 58026 0.1964 0.3385 0.30325 2017 10 1 58027 0.1957 0.3371 0.30231 2017 10 2 58028 0.1949 0.3357 0.30124 2017 10 3 58029 0.1941 0.3343 0.30000 2017 10 4 58030 0.1933 0.3329 0.29859 2017 10 5 58031 0.1925 0.3316 0.29702 2017 10 6 58032 0.1916 0.3302 0.29535 2017 10 7 58033 0.1907 0.3289 0.29364 2017 10 8 58034 0.1898 0.3276 0.29197 2017 10 9 58035 0.1889 0.3262 0.29039 2017 10 10 58036 0.1879 0.3249 0.28893 2017 10 11 58037 0.1870 0.3236 0.28759 2017 10 12 58038 0.1859 0.3224 0.28631 2017 10 13 58039 0.1849 0.3211 0.28503 2017 10 14 58040 0.1839 0.3199 0.28370 2017 10 15 58041 0.1828 0.3186 0.28227 2017 10 16 58042 0.1817 0.3174 0.28073 2017 10 17 58043 0.1806 0.3162 0.27910 2017 10 18 58044 0.1794 0.3150 0.27743 2017 10 19 58045 0.1782 0.3139 0.27576 2017 10 20 58046 0.1771 0.3127 0.27415 2017 10 21 58047 0.1758 0.3116 0.27264 2017 10 22 58048 0.1746 0.3105 0.27123 2017 10 23 58049 0.1734 0.3094 0.26994 2017 10 24 58050 0.1721 0.3083 0.26876 2017 10 25 58051 0.1708 0.3072 0.26764 2017 10 26 58052 0.1695 0.3062 0.26656 2017 10 27 58053 0.1682 0.3052 0.26547 2017 10 28 58054 0.1668 0.3042 0.26432 2017 10 29 58055 0.1654 0.3032 0.26307 2017 10 30 58056 0.1641 0.3022 0.26168 2017 10 31 58057 0.1627 0.3013 0.26013 2017 11 1 58058 0.1612 0.3004 0.25842 2017 11 2 58059 0.1598 0.2995 0.25658 2017 11 3 58060 0.1584 0.2986 0.25468 2017 11 4 58061 0.1569 0.2978 0.25278 2017 11 5 58062 0.1554 0.2969 0.25097 2017 11 6 58063 0.1539 0.2961 0.24930 2017 11 7 58064 0.1524 0.2953 0.24778 2017 11 8 58065 0.1509 0.2946 0.24637 2017 11 9 58066 0.1493 0.2938 0.24500 2017 11 10 58067 0.1478 0.2931 0.24360 2017 11 11 58068 0.1462 0.2924 0.24215 2017 11 12 58069 0.1446 0.2917 0.24061 2017 11 13 58070 0.1431 0.2911 0.23900 2017 11 14 58071 0.1415 0.2905 0.23735 2017 11 15 58072 0.1398 0.2898 0.23572 2017 11 16 58073 0.1382 0.2893 0.23413 2017 11 17 58074 0.1366 0.2887 0.23264 2017 11 18 58075 0.1350 0.2882 0.23127 2017 11 19 58076 0.1333 0.2877 0.23002 2017 11 20 58077 0.1316 0.2872 0.22889 2017 11 21 58078 0.1300 0.2868 0.22785 2017 11 22 58079 0.1283 0.2863 0.22688 2017 11 23 58080 0.1266 0.2859 0.22593 2017 11 24 58081 0.1249 0.2856 0.22494 2017 11 25 58082 0.1233 0.2852 0.22389 2017 11 26 58083 0.1216 0.2849 0.22272 2017 11 27 58084 0.1199 0.2846 0.22143 2017 11 28 58085 0.1181 0.2843 0.21998 2017 11 29 58086 0.1164 0.2841 0.21841 2017 11 30 58087 0.1147 0.2839 0.21673 2017 12 1 58088 0.1130 0.2837 0.21501 2017 12 2 58089 0.1113 0.2835 0.21334 2017 12 3 58090 0.1096 0.2834 0.21177 2017 12 4 58091 0.1078 0.2833 0.21034 2017 12 5 58092 0.1061 0.2832 0.20904 2017 12 6 58093 0.1044 0.2831 0.20781 2017 12 7 58094 0.1027 0.2831 0.20658 2017 12 8 58095 0.1009 0.2831 0.20530 2017 12 9 58096 0.0992 0.2831 0.20394 2017 12 10 58097 0.0975 0.2831 0.20253 2017 12 11 58098 0.0958 0.2832 0.20108 2017 12 12 58099 0.0941 0.2833 0.19965 2017 12 13 58100 0.0924 0.2834 0.19828 2017 12 14 58101 0.0906 0.2836 0.19701 2017 12 15 58102 0.0889 0.2838 0.19586 2017 12 16 58103 0.0872 0.2840 0.19484 2017 12 17 58104 0.0855 0.2842 0.19395 2017 12 18 58105 0.0838 0.2845 0.19317 2017 12 19 58106 0.0822 0.2848 0.19246 2017 12 20 58107 0.0805 0.2851 0.19181 2017 12 21 58108 0.0788 0.2854 0.19115 2017 12 22 58109 0.0772 0.2858 0.19045 2017 12 23 58110 0.0755 0.2862 0.18968 2017 12 24 58111 0.0739 0.2866 0.18880 2017 12 25 58112 0.0722 0.2870 0.18781 2017 12 26 58113 0.0706 0.2875 0.18670 2017 12 27 58114 0.0690 0.2880 0.18550 2017 12 28 58115 0.0674 0.2885 0.18424 2017 12 29 58116 0.0658 0.2891 0.18297 2017 12 30 58117 0.0642 0.2897 0.18174 2017 12 31 58118 0.0626 0.2903 0.18059 2018 1 1 58119 0.0611 0.2909 0.17952 2018 1 2 58120 0.0595 0.2915 0.17850 2018 1 3 58121 0.0580 0.2922 0.17746 2018 1 4 58122 0.0565 0.2929 0.17634 2018 1 5 58123 0.0550 0.2936 0.17511 2018 1 6 58124 0.0535 0.2944 0.17377 2018 1 7 58125 0.0520 0.2951 0.17236 2018 1 8 58126 0.0505 0.2959 0.17094 2018 1 9 58127 0.0491 0.2967 0.16958 2018 1 10 58128 0.0477 0.2976 0.16831 2018 1 11 58129 0.0463 0.2984 0.16716 2018 1 12 58130 0.0449 0.2993 0.16613 2018 1 13 58131 0.0435 0.3002 0.16522 2018 1 14 58132 0.0421 0.3012 0.16441 2018 1 15 58133 0.0408 0.3021 0.16365 2018 1 16 58134 0.0395 0.3031 0.16292 2018 1 17 58135 0.0382 0.3041 0.16217 2018 1 18 58136 0.0369 0.3051 0.16136 2018 1 19 58137 0.0356 0.3061 0.16043 2018 1 20 58138 0.0344 0.3072 0.15937 2018 1 21 58139 0.0332 0.3083 0.15816 2018 1 22 58140 0.0320 0.3094 0.15681 2018 1 23 58141 0.0308 0.3105 0.15533 2018 1 24 58142 0.0297 0.3116 0.15375 2018 1 25 58143 0.0285 0.3128 0.15212 2018 1 26 58144 0.0274 0.3139 0.15049 2018 1 27 58145 0.0263 0.3151 0.14892 2018 1 28 58146 0.0253 0.3163 0.14745 2018 1 29 58147 0.0242 0.3176 0.14607 2018 1 30 58148 0.0232 0.3188 0.14474 2018 1 31 58149 0.0222 0.3201 0.14338 2018 2 1 58150 0.0213 0.3213 0.14190 2018 2 2 58151 0.0203 0.3226 0.14028 2018 2 3 58152 0.0194 0.3239 0.13859 2018 2 4 58153 0.0185 0.3253 0.13689 2018 2 5 58154 0.0176 0.3266 0.13524 2018 2 6 58155 0.0168 0.3280 0.13370 2018 2 7 58156 0.0160 0.3293 0.13233 2018 2 8 58157 0.0152 0.3307 0.13113 2018 2 9 58158 0.0144 0.3321 0.13009 2018 2 10 58159 0.0137 0.3335 0.12916 2018 2 11 58160 0.0130 0.3349 0.12832 2018 2 12 58161 0.0123 0.3364 0.12744 2018 2 13 58162 0.0117 0.3378 0.12648 2018 2 14 58163 0.0110 0.3393 0.12542 2018 2 15 58164 0.0105 0.3407 0.12422 2018 2 16 58165 0.0099 0.3422 0.12287 2018 2 17 58166 0.0093 0.3437 0.12137 2018 2 18 58167 0.0088 0.3452 0.11973 2018 2 19 58168 0.0083 0.3467 0.11795 2018 2 20 58169 0.0079 0.3482 0.11608 2018 2 21 58170 0.0075 0.3497 0.11419 2018 2 22 58171 0.0071 0.3513 0.11239 2018 2 23 58172 0.0067 0.3528 0.11072 2018 2 24 58173 0.0064 0.3544 0.10916 2018 2 25 58174 0.0061 0.3559 0.10769 2018 2 26 58175 0.0058 0.3575 0.10628 2018 2 27 58176 0.0055 0.3590 0.10485 2018 2 28 58177 0.0053 0.3606 0.10333 2018 3 1 58178 0.0051 0.3622 0.10168 2018 3 2 58179 0.0050 0.3638 0.09994 2018 3 3 58180 0.0048 0.3653 0.09815 2018 3 4 58181 0.0047 0.3669 0.09631 2018 3 5 58182 0.0047 0.3685 0.09449 2018 3 6 58183 0.0046 0.3701 0.09276 2018 3 7 58184 0.0046 0.3717 0.09111 2018 3 8 58185 0.0046 0.3733 0.08956 2018 3 9 58186 0.0047 0.3749 0.08816 2018 3 10 58187 0.0048 0.3765 0.08688 2018 3 11 58188 0.0049 0.3781 0.08562 2018 3 12 58189 0.0050 0.3797 0.08437 2018 3 13 58190 0.0052 0.3813 0.08309 2018 3 14 58191 0.0054 0.3829 0.08172 2018 3 15 58192 0.0056 0.3845 0.08023 2018 3 16 58193 0.0059 0.3861 0.07862 2018 3 17 58194 0.0062 0.3876 0.07690 2018 3 18 58195 0.0065 0.3892 0.07507 2018 3 19 58196 0.0068 0.3908 0.07316 2018 3 20 58197 0.0072 0.3924 0.07125 2018 3 21 58198 0.0076 0.3940 0.06943 2018 3 22 58199 0.0080 0.3955 0.06771 2018 3 23 58200 0.0085 0.3971 0.06608 2018 3 24 58201 0.0090 0.3986 0.06455 2018 3 25 58202 0.0095 0.4002 0.06307 2018 3 26 58203 0.0101 0.4017 0.06160 2018 3 27 58204 0.0106 0.4033 0.06007 2018 3 28 58205 0.0112 0.4048 0.05840 2018 3 29 58206 0.0119 0.4063 0.05653 2018 3 30 58207 0.0125 0.4078 0.05451 2018 3 31 58208 0.0132 0.4093 0.05240 2018 4 1 58209 0.0140 0.4108 0.05033 2018 4 2 58210 0.0147 0.4123 0.04837 2018 4 3 58211 0.0155 0.4138 0.04651 2018 4 4 58212 0.0163 0.4152 0.04479 2018 4 5 58213 0.0171 0.4167 0.04326 2018 4 6 58214 0.0180 0.4181 0.04185 2018 4 7 58215 0.0188 0.4196 0.04056 2018 4 8 58216 0.0197 0.4210 0.03933 2018 4 9 58217 0.0207 0.4224 0.03811 2018 4 10 58218 0.0216 0.4238 0.03689 2018 4 11 58219 0.0226 0.4251 0.03563 2018 4 12 58220 0.0236 0.4265 0.03426 2018 4 13 58221 0.0246 0.4278 0.03273 2018 4 14 58222 0.0257 0.4292 0.03104 2018 4 15 58223 0.0268 0.4305 0.02924 2018 4 16 58224 0.0279 0.4318 0.02742 2018 4 17 58225 0.0290 0.4331 0.02553 2018 4 18 58226 0.0301 0.4343 0.02367 2018 4 19 58227 0.0313 0.4356 0.02193 2018 4 20 58228 0.0325 0.4368 0.02033 2018 4 21 58229 0.0337 0.4380 0.01878 2018 4 22 58230 0.0350 0.4392 0.01726 2018 4 23 58231 0.0362 0.4404 0.01573 2018 4 24 58232 0.0375 0.4416 0.01411 2018 4 25 58233 0.0388 0.4427 0.01240 2018 4 26 58234 0.0401 0.4438 0.01064 2018 4 27 58235 0.0415 0.4449 0.00885 2018 4 28 58236 0.0428 0.4460 0.00707 2018 4 29 58237 0.0442 0.4471 0.00533 2018 4 30 58238 0.0456 0.4481 0.00369 2018 5 1 58239 0.0470 0.4491 0.00221 2018 5 2 58240 0.0484 0.4501 0.00085 2018 5 3 58241 0.0499 0.4511 -0.00043 2018 5 4 58242 0.0514 0.4521 -0.00161 2018 5 5 58243 0.0528 0.4530 -0.00272 2018 5 6 58244 0.0543 0.4539 -0.00377 2018 5 7 58245 0.0559 0.4548 -0.00482 2018 5 8 58246 0.0574 0.4557 -0.00590 2018 5 9 58247 0.0589 0.4565 -0.00707 2018 5 10 58248 0.0605 0.4573 -0.00838 2018 5 11 58249 0.0621 0.4581 -0.00984 2018 5 12 58250 0.0636 0.4589 -0.01141 2018 5 13 58251 0.0652 0.4597 -0.01303 2018 5 14 58252 0.0669 0.4604 -0.01468 2018 5 15 58253 0.0685 0.4611 -0.01626 2018 5 16 58254 0.0701 0.4618 -0.01769 2018 5 17 58255 0.0718 0.4624 -0.01900 2018 5 18 58256 0.0734 0.4630 -0.02024 2018 5 19 58257 0.0751 0.4636 -0.02148 2018 5 20 58258 0.0768 0.4642 -0.02275 2018 5 21 58259 0.0784 0.4647 -0.02409 2018 5 22 58260 0.0801 0.4653 -0.02549 2018 5 23 58261 0.0818 0.4658 -0.02697 2018 5 24 58262 0.0835 0.4662 -0.02849 2018 5 25 58263 0.0853 0.4667 -0.03001 2018 5 26 58264 0.0870 0.4671 -0.03148 2018 5 27 58265 0.0887 0.4675 -0.03284 2018 5 28 58266 0.0904 0.4679 -0.03405 2018 5 29 58267 0.0922 0.4682 -0.03506 2018 5 30 58268 0.0939 0.4685 -0.03589 2018 5 31 58269 0.0957 0.4688 -0.03658 2018 6 1 58270 0.0974 0.4690 -0.03715 2018 6 2 58271 0.0992 0.4693 -0.03762 2018 6 3 58272 0.1009 0.4695 -0.03801 2018 6 4 58273 0.1027 0.4696 -0.03839 2018 6 5 58274 0.1044 0.4698 -0.03880 2018 6 6 58275 0.1062 0.4699 -0.03928 2018 6 7 58276 0.1080 0.4700 -0.03988 2018 6 8 58277 0.1097 0.4701 -0.04067 2018 6 9 58278 0.1115 0.4701 -0.04158 2018 6 10 58279 0.1132 0.4701 -0.04257 2018 6 11 58280 0.1150 0.4701 -0.04354 2018 6 12 58281 0.1167 0.4701 -0.04440 2018 6 13 58282 0.1185 0.4700 -0.04514 2018 6 14 58283 0.1202 0.4699 -0.04573 2018 6 15 58284 0.1220 0.4698 -0.04622 2018 6 16 58285 0.1237 0.4696 -0.04673 2018 6 17 58286 0.1255 0.4694 -0.04736 2018 6 18 58287 0.1272 0.4692 -0.04810 2018 6 19 58288 0.1289 0.4690 -0.04894 2018 6 20 58289 0.1306 0.4687 -0.04990 2018 6 21 58290 0.1323 0.4684 -0.05096 2018 6 22 58291 0.1340 0.4681 -0.05195 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) 57907 -100.69 0.30 -12.79 0.02 57908 -100.42 0.30 -12.80 0.03 57909 -100.29 0.30 -12.73 0.02 57910 -100.49 0.30 -12.55 0.15 57911 -100.84 0.30 -12.42 0.15 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57907 -0.100 0.119 0.149 0.020 57908 -0.094 0.119 0.163 0.030 57909 -0.084 0.119 0.168 0.020 57910 -0.068 0.119 0.179 0.150 57911 -0.040 0.119 0.160 0.150 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).