********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 6 July 2017 Vol. XXX No. 027 ______________________________________________________________________ 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 = +0.3 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 30 57934 0.15248 .00009 0.44999 .00009 0.360043 0.000022 17 7 1 57935 0.15568 .00009 0.44932 .00009 0.359485 0.000022 17 7 2 57936 0.15900 .00009 0.44882 .00009 0.358910 0.000025 17 7 3 57937 0.16230 .00009 0.44830 .00009 0.358416 0.000023 17 7 4 57938 0.16565 .00009 0.44771 .00009 0.358058 0.000024 17 7 5 57939 0.16891 .00009 0.44717 .00009 0.357810 0.000022 17 7 6 57940 0.17200 .00009 0.44670 .00009 0.357652 0.000021 IERS Final Values MJD x y UT1-UTC " " s 17 5 2 57875 0.0394 0.4329 0.42038 17 5 3 57876 0.0406 0.4342 0.41898 17 5 4 57877 0.0416 0.4352 0.41757 17 5 5 57878 0.0432 0.4365 0.41610 17 5 6 57879 0.0451 0.4379 0.41457 17 5 7 57880 0.0477 0.4390 0.41300 17 5 8 57881 0.0501 0.4405 0.41144 17 5 9 57882 0.0520 0.4418 0.40994 17 5 10 57883 0.0540 0.4431 0.40854 17 5 11 57884 0.0562 0.4444 0.40726 17 5 12 57885 0.0586 0.4459 0.40610 17 5 13 57886 0.0607 0.4473 0.40501 17 5 14 57887 0.0629 0.4484 0.40399 17 5 15 57888 0.0648 0.4494 0.40300 17 5 16 57889 0.0668 0.4498 0.40200 17 5 17 57890 0.0687 0.4503 0.40093 17 5 18 57891 0.0705 0.4507 0.39979 17 5 19 57892 0.0725 0.4518 0.39857 17 5 20 57893 0.0744 0.4529 0.39726 17 5 21 57894 0.0763 0.4537 0.39583 17 5 22 57895 0.0783 0.4545 0.39428 17 5 23 57896 0.0798 0.4551 0.39264 17 5 24 57897 0.0811 0.4555 0.39095 17 5 25 57898 0.0823 0.4557 0.38931 17 5 26 57899 0.0840 0.4559 0.38781 17 5 27 57900 0.0855 0.4563 0.38653 17 5 28 57901 0.0874 0.4564 0.38541 17 5 29 57902 0.0899 0.4565 0.38433 17 5 30 57903 0.0921 0.4571 0.38322 17 5 31 57904 0.0940 0.4574 0.38204 17 6 1 57905 0.0960 0.4575 0.38075 _______________________________________________________________________ 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 = 0.1232 + 0.0784 cos A + 0.1018 sin A - 0.0336 cos C - 0.0131 sin C y = 0.3595 + 0.0963 cos A - 0.0654 sin A - 0.0131 cos C + 0.0336 sin C UT1-UTC = 0.3615 - 0.00114 (MJD - 57948) - (UT2-UT1) where A = 2*pi*(MJD-57940)/365.25 and C = 2*pi*(MJD-57940)/435. TAI-UTC(MJD 57941) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57940)**0.80 S t = 0.00025 (MJD-57940)**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 7 7 57941 0.1746 0.4463 0.35755 2017 7 8 57942 0.1769 0.4459 0.35748 2017 7 9 57943 0.1790 0.4453 0.35742 2017 7 10 57944 0.1807 0.4447 0.35735 2017 7 11 57945 0.1824 0.4440 0.35720 2017 7 12 57946 0.1840 0.4431 0.35695 2017 7 13 57947 0.1855 0.4422 0.35658 2017 7 14 57948 0.1871 0.4413 0.35608 2017 7 15 57949 0.1885 0.4404 0.35546 2017 7 16 57950 0.1898 0.4394 0.35474 2017 7 17 57951 0.1911 0.4384 0.35398 2017 7 18 57952 0.1924 0.4373 0.35324 2017 7 19 57953 0.1936 0.4362 0.35260 2017 7 20 57954 0.1949 0.4350 0.35208 2017 7 21 57955 0.1962 0.4339 0.35167 2017 7 22 57956 0.1975 0.4327 0.35136 2017 7 23 57957 0.1987 0.4314 0.35105 2017 7 24 57958 0.2000 0.4302 0.35070 2017 7 25 57959 0.2012 0.4289 0.35028 2017 7 26 57960 0.2024 0.4276 0.34979 2017 7 27 57961 0.2036 0.4263 0.34925 2017 7 28 57962 0.2047 0.4250 0.34872 2017 7 29 57963 0.2057 0.4237 0.34822 2017 7 30 57964 0.2067 0.4223 0.34778 2017 7 31 57965 0.2077 0.4209 0.34743 2017 8 1 57966 0.2086 0.4195 0.34717 2017 8 2 57967 0.2095 0.4181 0.34699 2017 8 3 57968 0.2104 0.4166 0.34687 2017 8 4 57969 0.2113 0.4152 0.34678 2017 8 5 57970 0.2121 0.4137 0.34669 2017 8 6 57971 0.2128 0.4122 0.34655 2017 8 7 57972 0.2136 0.4107 0.34635 2017 8 8 57973 0.2143 0.4092 0.34603 2017 8 9 57974 0.2149 0.4077 0.34556 2017 8 10 57975 0.2156 0.4061 0.34494 2017 8 11 57976 0.2162 0.4046 0.34418 2017 8 12 57977 0.2168 0.4030 0.34331 2017 8 13 57978 0.2174 0.4014 0.34240 2017 8 14 57979 0.2179 0.3998 0.34149 2017 8 15 57980 0.2184 0.3982 0.34064 2017 8 16 57981 0.2189 0.3966 0.33987 2017 8 17 57982 0.2194 0.3949 0.33921 2017 8 18 57983 0.2198 0.3933 0.33861 2017 8 19 57984 0.2202 0.3917 0.33802 2017 8 20 57985 0.2205 0.3900 0.33739 2017 8 21 57986 0.2208 0.3883 0.33665 2017 8 22 57987 0.2211 0.3867 0.33581 2017 8 23 57988 0.2214 0.3850 0.33486 2017 8 24 57989 0.2216 0.3833 0.33385 2017 8 25 57990 0.2218 0.3816 0.33285 2017 8 26 57991 0.2219 0.3799 0.33189 2017 8 27 57992 0.2220 0.3782 0.33102 2017 8 28 57993 0.2221 0.3765 0.33024 2017 8 29 57994 0.2222 0.3748 0.32957 2017 8 30 57995 0.2222 0.3731 0.32899 2017 8 31 57996 0.2222 0.3714 0.32849 2017 9 1 57997 0.2221 0.3697 0.32802 2017 9 2 57998 0.2221 0.3680 0.32754 2017 9 3 57999 0.2220 0.3663 0.32701 2017 9 4 58000 0.2218 0.3646 0.32638 2017 9 5 58001 0.2216 0.3628 0.32561 2017 9 6 58002 0.2214 0.3611 0.32468 2017 9 7 58003 0.2212 0.3594 0.32359 2017 9 8 58004 0.2209 0.3577 0.32238 2017 9 9 58005 0.2206 0.3560 0.32111 2017 9 10 58006 0.2203 0.3543 0.31983 2017 9 11 58007 0.2199 0.3526 0.31863 2017 9 12 58008 0.2195 0.3509 0.31753 2017 9 13 58009 0.2191 0.3492 0.31653 2017 9 14 58010 0.2186 0.3475 0.31562 2017 9 15 58011 0.2181 0.3458 0.31474 2017 9 16 58012 0.2176 0.3441 0.31384 2017 9 17 58013 0.2170 0.3425 0.31284 2017 9 18 58014 0.2164 0.3408 0.31174 2017 9 19 58015 0.2158 0.3391 0.31052 2017 9 20 58016 0.2152 0.3375 0.30922 2017 9 21 58017 0.2145 0.3358 0.30790 2017 9 22 58018 0.2138 0.3342 0.30661 2017 9 23 58019 0.2130 0.3326 0.30539 2017 9 24 58020 0.2122 0.3310 0.30428 2017 9 25 58021 0.2114 0.3294 0.30327 2017 9 26 58022 0.2106 0.3278 0.30236 2017 9 27 58023 0.2097 0.3262 0.30153 2017 9 28 58024 0.2088 0.3246 0.30074 2017 9 29 58025 0.2079 0.3231 0.29994 2017 9 30 58026 0.2069 0.3215 0.29910 2017 10 1 58027 0.2059 0.3200 0.29816 2017 10 2 58028 0.2049 0.3184 0.29709 2017 10 3 58029 0.2039 0.3169 0.29587 2017 10 4 58030 0.2028 0.3154 0.29447 2017 10 5 58031 0.2017 0.3140 0.29292 2017 10 6 58032 0.2006 0.3125 0.29126 2017 10 7 58033 0.1994 0.3111 0.28957 2017 10 8 58034 0.1982 0.3096 0.28792 2017 10 9 58035 0.1970 0.3082 0.28639 2017 10 10 58036 0.1958 0.3068 0.28499 2017 10 11 58037 0.1945 0.3054 0.28370 2017 10 12 58038 0.1932 0.3041 0.28247 2017 10 13 58039 0.1919 0.3027 0.28125 2017 10 14 58040 0.1905 0.3014 0.27996 2017 10 15 58041 0.1892 0.3001 0.27858 2017 10 16 58042 0.1878 0.2988 0.27708 2017 10 17 58043 0.1864 0.2975 0.27550 2017 10 18 58044 0.1849 0.2963 0.27387 2017 10 19 58045 0.1835 0.2951 0.27225 2017 10 20 58046 0.1820 0.2938 0.27068 2017 10 21 58047 0.1805 0.2927 0.26920 2017 10 22 58048 0.1789 0.2915 0.26784 2017 10 23 58049 0.1774 0.2904 0.26656 2017 10 24 58050 0.1758 0.2892 0.26538 2017 10 25 58051 0.1742 0.2881 0.26427 2017 10 26 58052 0.1726 0.2871 0.26320 2017 10 27 58053 0.1710 0.2860 0.26212 2017 10 28 58054 0.1693 0.2850 0.26097 2017 10 29 58055 0.1676 0.2840 0.25973 2017 10 30 58056 0.1659 0.2830 0.25835 2017 10 31 58057 0.1642 0.2821 0.25681 2017 11 1 58058 0.1625 0.2811 0.25511 2017 11 2 58059 0.1607 0.2802 0.25328 2017 11 3 58060 0.1590 0.2794 0.25137 2017 11 4 58061 0.1572 0.2785 0.24947 2017 11 5 58062 0.1554 0.2777 0.24767 2017 11 6 58063 0.1536 0.2769 0.24600 2017 11 7 58064 0.1518 0.2761 0.24447 2017 11 8 58065 0.1499 0.2754 0.24305 2017 11 9 58066 0.1481 0.2747 0.24168 2017 11 10 58067 0.1462 0.2740 0.24028 2017 11 11 58068 0.1443 0.2733 0.23881 2017 11 12 58069 0.1424 0.2727 0.23727 2017 11 13 58070 0.1405 0.2721 0.23565 2017 11 14 58071 0.1386 0.2715 0.23400 2017 11 15 58072 0.1367 0.2710 0.23235 2017 11 16 58073 0.1348 0.2704 0.23075 2017 11 17 58074 0.1328 0.2699 0.22925 2017 11 18 58075 0.1309 0.2695 0.22786 2017 11 19 58076 0.1289 0.2691 0.22659 2017 11 20 58077 0.1269 0.2687 0.22544 2017 11 21 58078 0.1250 0.2683 0.22438 2017 11 22 58079 0.1230 0.2679 0.22339 2017 11 23 58080 0.1210 0.2676 0.22241 2017 11 24 58081 0.1190 0.2673 0.22140 2017 11 25 58082 0.1170 0.2671 0.22031 2017 11 26 58083 0.1150 0.2669 0.21912 2017 11 27 58084 0.1130 0.2667 0.21780 2017 11 28 58085 0.1110 0.2665 0.21633 2017 11 29 58086 0.1090 0.2664 0.21473 2017 11 30 58087 0.1069 0.2663 0.21302 2017 12 1 58088 0.1049 0.2662 0.21129 2017 12 2 58089 0.1029 0.2662 0.20959 2017 12 3 58090 0.1009 0.2662 0.20800 2017 12 4 58091 0.0989 0.2662 0.20655 2017 12 5 58092 0.0968 0.2662 0.20523 2017 12 6 58093 0.0948 0.2663 0.20399 2017 12 7 58094 0.0928 0.2664 0.20274 2017 12 8 58095 0.0908 0.2666 0.20144 2017 12 9 58096 0.0888 0.2668 0.20006 2017 12 10 58097 0.0868 0.2670 0.19862 2017 12 11 58098 0.0848 0.2672 0.19715 2017 12 12 58099 0.0828 0.2675 0.19569 2017 12 13 58100 0.0808 0.2678 0.19429 2017 12 14 58101 0.0788 0.2681 0.19298 2017 12 15 58102 0.0768 0.2685 0.19178 2017 12 16 58103 0.0748 0.2689 0.19072 2017 12 17 58104 0.0729 0.2693 0.18977 2017 12 18 58105 0.0709 0.2697 0.18892 2017 12 19 58106 0.0690 0.2702 0.18815 2017 12 20 58107 0.0670 0.2707 0.18741 2017 12 21 58108 0.0651 0.2713 0.18666 2017 12 22 58109 0.0632 0.2719 0.18585 2017 12 23 58110 0.0613 0.2725 0.18495 2017 12 24 58111 0.0594 0.2731 0.18394 2017 12 25 58112 0.0575 0.2738 0.18279 2017 12 26 58113 0.0556 0.2744 0.18152 2017 12 27 58114 0.0538 0.2752 0.18015 2017 12 28 58115 0.0519 0.2759 0.17872 2017 12 29 58116 0.0501 0.2767 0.17729 2017 12 30 58117 0.0483 0.2775 0.17592 2017 12 31 58118 0.0465 0.2783 0.17467 2018 1 1 58119 0.0447 0.2792 0.17354 2018 1 2 58120 0.0429 0.2801 0.17249 2018 1 3 58121 0.0412 0.2810 0.17147 2018 1 4 58122 0.0394 0.2820 0.17041 2018 1 5 58123 0.0377 0.2829 0.16928 2018 1 6 58124 0.0360 0.2839 0.16807 2018 1 7 58125 0.0343 0.2850 0.16683 2018 1 8 58126 0.0327 0.2860 0.16561 2018 1 9 58127 0.0310 0.2871 0.16448 2018 1 10 58128 0.0294 0.2882 0.16346 2018 1 11 58129 0.0278 0.2894 0.16257 2018 1 12 58130 0.0263 0.2905 0.16181 2018 1 13 58131 0.0247 0.2917 0.16115 2018 1 14 58132 0.0232 0.2929 0.16058 2018 1 15 58133 0.0217 0.2941 0.16004 2018 1 16 58134 0.0202 0.2954 0.15949 2018 1 17 58135 0.0187 0.2967 0.15890 2018 1 18 58136 0.0173 0.2980 0.15822 2018 1 19 58137 0.0158 0.2993 0.15742 2018 1 20 58138 0.0145 0.3007 0.15648 2018 1 21 58139 0.0131 0.3021 0.15538 2018 1 22 58140 0.0117 0.3035 0.15413 2018 1 23 58141 0.0104 0.3049 0.15275 2018 1 24 58142 0.0091 0.3063 0.15129 2018 1 25 58143 0.0079 0.3078 0.14980 2018 1 26 58144 0.0066 0.3093 0.14834 2018 1 27 58145 0.0054 0.3108 0.14696 2018 1 28 58146 0.0043 0.3123 0.14568 2018 1 29 58147 0.0031 0.3138 0.14448 2018 1 30 58148 0.0020 0.3154 0.14331 2018 1 31 58149 0.0009 0.3170 0.14209 2018 2 1 58150 -0.0002 0.3186 0.14077 2018 2 2 58151 -0.0012 0.3202 0.13932 2018 2 3 58152 -0.0022 0.3218 0.13777 2018 2 4 58153 -0.0032 0.3235 0.13617 2018 2 5 58154 -0.0041 0.3251 0.13459 2018 2 6 58155 -0.0050 0.3268 0.13310 2018 2 7 58156 -0.0059 0.3285 0.13171 2018 2 8 58157 -0.0068 0.3302 0.13043 2018 2 9 58158 -0.0076 0.3320 0.12925 2018 2 10 58159 -0.0084 0.3337 0.12819 2018 2 11 58160 -0.0091 0.3354 0.12723 2018 2 12 58161 -0.0098 0.3372 0.12632 2018 2 13 58162 -0.0105 0.3390 0.12537 2018 2 14 58163 -0.0112 0.3408 0.12435 2018 2 15 58164 -0.0118 0.3426 0.12322 2018 2 16 58165 -0.0124 0.3444 0.12195 2018 2 17 58166 -0.0130 0.3462 0.12055 2018 2 18 58167 -0.0135 0.3481 0.11902 2018 2 19 58168 -0.0140 0.3499 0.11735 2018 2 20 58169 -0.0144 0.3518 0.11556 2018 2 21 58170 -0.0148 0.3537 0.11371 2018 2 22 58171 -0.0152 0.3555 0.11189 2018 2 23 58172 -0.0156 0.3574 0.11010 2018 2 24 58173 -0.0159 0.3593 0.10838 2018 2 25 58174 -0.0162 0.3612 0.10676 2018 2 26 58175 -0.0164 0.3631 0.10520 2018 2 27 58176 -0.0166 0.3650 0.10364 2018 2 28 58177 -0.0168 0.3669 0.10199 2018 3 1 58178 -0.0170 0.3688 0.10020 2018 3 2 58179 -0.0171 0.3707 0.09826 2018 3 3 58180 -0.0172 0.3727 0.09624 2018 3 4 58181 -0.0172 0.3746 0.09424 2018 3 5 58182 -0.0172 0.3765 0.09232 2018 3 6 58183 -0.0172 0.3785 0.09053 2018 3 7 58184 -0.0171 0.3804 0.08893 2018 3 8 58185 -0.0170 0.3823 0.08751 2018 3 9 58186 -0.0169 0.3843 0.08625 2018 3 10 58187 -0.0167 0.3862 0.08510 2018 3 11 58188 -0.0165 0.3881 0.08401 2018 3 12 58189 -0.0162 0.3901 0.08287 2018 3 13 58190 -0.0160 0.3920 0.08161 2018 3 14 58191 -0.0156 0.3939 0.08023 2018 3 15 58192 -0.0153 0.3958 0.07869 2018 3 16 58193 -0.0149 0.3978 0.07698 2018 3 17 58194 -0.0145 0.3997 0.07511 2018 3 18 58195 -0.0141 0.4016 0.07311 2018 3 19 58196 -0.0136 0.4035 0.07100 2018 3 20 58197 -0.0130 0.4054 0.06885 2018 3 21 58198 -0.0125 0.4073 0.06674 2018 3 22 58199 -0.0119 0.4092 0.06478 2018 3 23 58200 -0.0113 0.4111 0.06297 2018 3 24 58201 -0.0106 0.4129 0.06130 2018 3 25 58202 -0.0099 0.4148 0.05970 2018 3 26 58203 -0.0092 0.4167 0.05813 2018 3 27 58204 -0.0084 0.4185 0.05652 2018 3 28 58205 -0.0077 0.4203 0.05479 2018 3 29 58206 -0.0068 0.4222 0.05294 2018 3 30 58207 -0.0060 0.4240 0.05102 2018 3 31 58208 -0.0051 0.4258 0.04908 2018 4 1 58209 -0.0042 0.4276 0.04714 2018 4 2 58210 -0.0032 0.4294 0.04525 2018 4 3 58211 -0.0022 0.4311 0.04347 2018 4 4 58212 -0.0012 0.4329 0.04179 2018 4 5 58213 -0.0002 0.4346 0.04022 2018 4 6 58214 0.0009 0.4363 0.03880 2018 4 7 58215 0.0020 0.4381 0.03749 2018 4 8 58216 0.0032 0.4397 0.03619 2018 4 9 58217 0.0043 0.4414 0.03488 2018 4 10 58218 0.0055 0.4431 0.03353 2018 4 11 58219 0.0068 0.4447 0.03206 2018 4 12 58220 0.0080 0.4464 0.03048 2018 4 13 58221 0.0093 0.4480 0.02877 2018 4 14 58222 0.0106 0.4496 0.02696 2018 4 15 58223 0.0120 0.4511 0.02507 2018 4 16 58224 0.0134 0.4527 0.02314 2018 4 17 58225 0.0148 0.4542 0.02127 2018 4 18 58226 0.0162 0.4558 0.01952 2018 4 19 58227 0.0176 0.4572 0.01792 2018 4 20 58228 0.0191 0.4587 0.01645 2018 4 21 58229 0.0206 0.4602 0.01507 2018 4 22 58230 0.0222 0.4616 0.01372 2018 4 23 58231 0.0237 0.4630 0.01234 2018 4 24 58232 0.0253 0.4644 0.01091 2018 4 25 58233 0.0269 0.4658 0.00933 2018 4 26 58234 0.0285 0.4671 0.00759 2018 4 27 58235 0.0302 0.4684 0.00575 2018 4 28 58236 0.0319 0.4697 0.00388 2018 4 29 58237 0.0336 0.4710 0.00210 2018 4 30 58238 0.0353 0.4722 0.00046 2018 5 1 58239 0.0370 0.4735 -0.00106 2018 5 2 58240 0.0388 0.4747 -0.00242 2018 5 3 58241 0.0406 0.4758 -0.00360 2018 5 4 58242 0.0424 0.4770 -0.00466 2018 5 5 58243 0.0442 0.4781 -0.00563 2018 5 6 58244 0.0460 0.4792 -0.00654 2018 5 7 58245 0.0479 0.4802 -0.00746 2018 5 8 58246 0.0498 0.4813 -0.00840 2018 5 9 58247 0.0517 0.4823 -0.00938 2018 5 10 58248 0.0536 0.4832 -0.01047 2018 5 11 58249 0.0555 0.4842 -0.01171 2018 5 12 58250 0.0574 0.4851 -0.01308 2018 5 13 58251 0.0594 0.4860 -0.01454 2018 5 14 58252 0.0614 0.4869 -0.01597 2018 5 15 58253 0.0634 0.4877 -0.01744 2018 5 16 58254 0.0654 0.4885 -0.01885 2018 5 17 58255 0.0674 0.4893 -0.02012 2018 5 18 58256 0.0694 0.4900 -0.02124 2018 5 19 58257 0.0714 0.4907 -0.02235 2018 5 20 58258 0.0735 0.4914 -0.02346 2018 5 21 58259 0.0756 0.4921 -0.02462 2018 5 22 58260 0.0776 0.4927 -0.02587 2018 5 23 58261 0.0797 0.4933 -0.02719 2018 5 24 58262 0.0818 0.4939 -0.02852 2018 5 25 58263 0.0839 0.4944 -0.02980 2018 5 26 58264 0.0860 0.4949 -0.03102 2018 5 27 58265 0.0881 0.4954 -0.03215 2018 5 28 58266 0.0902 0.4958 -0.03316 2018 5 29 58267 0.0924 0.4962 -0.03400 2018 5 30 58268 0.0945 0.4966 -0.03473 2018 5 31 58269 0.0966 0.4969 -0.03539 2018 6 1 58270 0.0988 0.4972 -0.03598 2018 6 2 58271 0.1009 0.4975 -0.03652 2018 6 3 58272 0.1031 0.4977 -0.03703 2018 6 4 58273 0.1052 0.4979 -0.03756 2018 6 5 58274 0.1074 0.4981 -0.03814 2018 6 6 58275 0.1096 0.4982 -0.03882 2018 6 7 58276 0.1117 0.4984 -0.03964 2018 6 8 58277 0.1139 0.4984 -0.04059 2018 6 9 58278 0.1160 0.4985 -0.04162 2018 6 10 58279 0.1182 0.4985 -0.04268 2018 6 11 58280 0.1203 0.4985 -0.04374 2018 6 12 58281 0.1225 0.4984 -0.04470 2018 6 13 58282 0.1246 0.4983 -0.04551 2018 6 14 58283 0.1268 0.4982 -0.04622 2018 6 15 58284 0.1289 0.4980 -0.04690 2018 6 16 58285 0.1311 0.4979 -0.04762 2018 6 17 58286 0.1332 0.4976 -0.04843 2018 6 18 58287 0.1353 0.4974 -0.04935 2018 6 19 58288 0.1374 0.4971 -0.05035 2018 6 20 58289 0.1396 0.4968 -0.05139 2018 6 21 58290 0.1417 0.4964 -0.05244 2018 6 22 58291 0.1438 0.4961 -0.05342 2018 6 23 58292 0.1459 0.4956 -0.05432 2018 6 24 58293 0.1479 0.4952 -0.05507 2018 6 25 58294 0.1500 0.4947 -0.05566 2018 6 26 58295 0.1521 0.4942 -0.05605 2018 6 27 58296 0.1541 0.4937 -0.05629 2018 6 28 58297 0.1562 0.4931 -0.05643 2018 6 29 58298 0.1582 0.4925 -0.05649 2018 6 30 58299 0.1602 0.4919 -0.05649 2018 7 1 58300 0.1622 0.4912 -0.05645 2018 7 2 58301 0.1642 0.4905 -0.05643 2018 7 3 58302 0.1661 0.4898 -0.05647 2018 7 4 58303 0.1681 0.4890 -0.05659 2018 7 5 58304 0.1700 0.4882 -0.05683 2018 7 6 58305 0.1720 0.4874 -0.05723 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) 57918 -101.79 0.30 -12.87 0.03 57919 -101.69 0.30 -12.82 0.03 57920 -101.43 0.30 -12.60 0.03 57921 -101.35 0.30 -12.36 0.05 57922 -101.65 0.30 -12.23 0.03 57923 -102.17 0.30 -12.17 0.03 57924 -102.68 0.30 -12.14 0.03 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 57875 -98.3 -12.9 57876 -98.6 -13.0 57877 -98.7 -13.0 57878 -98.4 -13.1 57879 -98.2 -13.1 57880 -98.0 -13.1 57881 -98.0 -12.9 57882 -98.2 -12.7 57883 -98.4 -12.5 57884 -98.6 -12.5 57885 -98.7 -12.6 57886 -98.8 -12.7 57887 -98.9 -12.8 57888 -99.2 -13.0 57889 -99.5 -13.1 57890 -99.3 -13.2 57891 -98.9 -13.1 57892 -98.4 -12.9 57893 -98.3 -12.8 57894 -98.7 -12.8 57895 -99.1 -12.8 57896 -99.3 -12.7 57897 -99.5 -12.6 57898 -100.0 -12.7 57899 -100.5 -12.9 57900 -100.8 -13.1 57901 -100.6 -13.1 57902 -100.1 -13.0 57903 -99.8 -13.0 57904 -99.8 -13.0 57905 -100.3 -12.9 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57918 -0.042 0.119 0.215 0.030 57919 -0.053 0.119 0.204 0.030 57920 -0.059 0.119 0.202 0.030 57921 -0.060 0.119 0.185 0.050 57922 -0.055 0.119 0.157 0.030 57923 -0.041 0.119 0.156 0.030 57924 -0.030 0.119 0.154 0.030 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 57875 -0.04 0.28 57876 -0.17 0.13 57877 -0.19 0.11 57878 -0.09 0.03 57879 -0.09 0.08 57880 -0.08 0.07 57881 -0.08 0.14 57882 -0.08 0.12 57883 -0.05 0.16 57884 -0.05 0.17 57885 -0.04 0.21 57886 -0.07 0.26 57887 -0.08 0.29 57888 -0.15 0.24 57889 -0.21 0.30 57890 -0.17 0.26 57891 -0.19 0.23 57892 -0.17 0.20 57893 -0.16 0.13 57894 -0.16 0.11 57895 -0.14 0.10 57896 -0.12 0.08 57897 -0.12 0.08 57898 -0.14 0.07 57899 -0.11 0.12 57900 -0.12 0.09 57901 -0.10 0.06 57902 -0.08 0.05 57903 -0.08 0.01 57904 -0.05 0.01 57905 -0.08 0.07 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).