********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 29 June 2017 Vol. XXX No. 026 ______________________________________________________________________ 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 23 57927 0.13596 .00009 0.45449 .00009 0.363545 0.000017 17 6 24 57928 0.13864 .00009 0.45420 .00009 0.363099 0.000014 17 6 25 57929 0.14095 .00009 0.45394 .00009 0.362694 0.000013 17 6 26 57930 0.14303 .00009 0.45345 .00009 0.362275 0.000011 17 6 27 57931 0.14509 .00009 0.45267 .00009 0.361786 0.000012 17 6 28 57932 0.14726 .00009 0.45175 .00009 0.361216 0.000011 17 6 29 57933 0.14967 .00009 0.45082 .00009 0.360616 0.000011 _______________________________________________________________________ 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 = 0.1158 + 0.0654 cos A + 0.1057 sin A - 0.0344 cos C - 0.0125 sin C y = 0.3586 + 0.0996 cos A - 0.0535 sin A - 0.0125 cos C + 0.0344 sin C UT1-UTC = 0.3729 - 0.00114 (MJD - 57941) - (UT2-UT1) where A = 2*pi*(MJD-57933)/365.25 and C = 2*pi*(MJD-57933)/435. TAI-UTC(MJD 57934) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57933)**0.80 S t = 0.00025 (MJD-57933)**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 30 57934 0.1519 0.4502 0.36005 2017 7 1 57935 0.1542 0.4496 0.35952 2017 7 2 57936 0.1562 0.4491 0.35903 2017 7 3 57937 0.1580 0.4486 0.35861 2017 7 4 57938 0.1596 0.4481 0.35831 2017 7 5 57939 0.1611 0.4475 0.35814 2017 7 6 57940 0.1626 0.4468 0.35809 2017 7 7 57941 0.1640 0.4461 0.35813 2017 7 8 57942 0.1654 0.4453 0.35823 2017 7 9 57943 0.1668 0.4446 0.35834 2017 7 10 57944 0.1682 0.4438 0.35843 2017 7 11 57945 0.1697 0.4429 0.35845 2017 7 12 57946 0.1711 0.4421 0.35836 2017 7 13 57947 0.1725 0.4412 0.35814 2017 7 14 57948 0.1739 0.4404 0.35779 2017 7 15 57949 0.1752 0.4395 0.35733 2017 7 16 57950 0.1765 0.4385 0.35679 2017 7 17 57951 0.1778 0.4375 0.35622 2017 7 18 57952 0.1790 0.4365 0.35566 2017 7 19 57953 0.1803 0.4354 0.35515 2017 7 20 57954 0.1816 0.4344 0.35474 2017 7 21 57955 0.1828 0.4333 0.35441 2017 7 22 57956 0.1840 0.4322 0.35412 2017 7 23 57957 0.1851 0.4312 0.35380 2017 7 24 57958 0.1862 0.4301 0.35340 2017 7 25 57959 0.1873 0.4289 0.35288 2017 7 26 57960 0.1883 0.4278 0.35225 2017 7 27 57961 0.1894 0.4266 0.35156 2017 7 28 57962 0.1904 0.4254 0.35085 2017 7 29 57963 0.1913 0.4242 0.35019 2017 7 30 57964 0.1923 0.4230 0.34959 2017 7 31 57965 0.1932 0.4218 0.34909 2017 8 1 57966 0.1941 0.4205 0.34871 2017 8 2 57967 0.1950 0.4193 0.34842 2017 8 3 57968 0.1959 0.4180 0.34822 2017 8 4 57969 0.1967 0.4167 0.34807 2017 8 5 57970 0.1975 0.4154 0.34795 2017 8 6 57971 0.1982 0.4141 0.34781 2017 8 7 57972 0.1990 0.4127 0.34760 2017 8 8 57973 0.1997 0.4114 0.34728 2017 8 9 57974 0.2004 0.4100 0.34683 2017 8 10 57975 0.2011 0.4086 0.34624 2017 8 11 57976 0.2017 0.4072 0.34551 2017 8 12 57977 0.2023 0.4058 0.34468 2017 8 13 57978 0.2029 0.4044 0.34380 2017 8 14 57979 0.2035 0.4030 0.34292 2017 8 15 57980 0.2040 0.4016 0.34210 2017 8 16 57981 0.2045 0.4001 0.34136 2017 8 17 57982 0.2049 0.3987 0.34071 2017 8 18 57983 0.2054 0.3972 0.34013 2017 8 19 57984 0.2058 0.3957 0.33955 2017 8 20 57985 0.2062 0.3942 0.33893 2017 8 21 57986 0.2065 0.3928 0.33823 2017 8 22 57987 0.2068 0.3913 0.33741 2017 8 23 57988 0.2071 0.3898 0.33650 2017 8 24 57989 0.2074 0.3883 0.33555 2017 8 25 57990 0.2076 0.3868 0.33462 2017 8 26 57991 0.2078 0.3852 0.33374 2017 8 27 57992 0.2080 0.3837 0.33296 2017 8 28 57993 0.2082 0.3822 0.33229 2017 8 29 57994 0.2083 0.3807 0.33173 2017 8 30 57995 0.2084 0.3791 0.33126 2017 8 31 57996 0.2084 0.3776 0.33085 2017 9 1 57997 0.2085 0.3761 0.33048 2017 9 2 57998 0.2085 0.3745 0.33010 2017 9 3 57999 0.2084 0.3730 0.32966 2017 9 4 58000 0.2084 0.3715 0.32910 2017 9 5 58001 0.2083 0.3699 0.32841 2017 9 6 58002 0.2081 0.3684 0.32756 2017 9 7 58003 0.2080 0.3668 0.32654 2017 9 8 58004 0.2078 0.3653 0.32540 2017 9 9 58005 0.2076 0.3637 0.32420 2017 9 10 58006 0.2074 0.3622 0.32300 2017 9 11 58007 0.2071 0.3607 0.32188 2017 9 12 58008 0.2068 0.3591 0.32085 2017 9 13 58009 0.2065 0.3576 0.31993 2017 9 14 58010 0.2061 0.3561 0.31909 2017 9 15 58011 0.2057 0.3546 0.31828 2017 9 16 58012 0.2053 0.3530 0.31743 2017 9 17 58013 0.2048 0.3515 0.31648 2017 9 18 58014 0.2044 0.3500 0.31540 2017 9 19 58015 0.2039 0.3485 0.31421 2017 9 20 58016 0.2033 0.3470 0.31292 2017 9 21 58017 0.2028 0.3455 0.31160 2017 9 22 58018 0.2022 0.3441 0.31031 2017 9 23 58019 0.2016 0.3426 0.30909 2017 9 24 58020 0.2009 0.3411 0.30797 2017 9 25 58021 0.2002 0.3397 0.30696 2017 9 26 58022 0.1995 0.3382 0.30605 2017 9 27 58023 0.1988 0.3368 0.30523 2017 9 28 58024 0.1980 0.3354 0.30444 2017 9 29 58025 0.1972 0.3339 0.30366 2017 9 30 58026 0.1964 0.3325 0.30283 2017 10 1 58027 0.1956 0.3311 0.30191 2017 10 2 58028 0.1947 0.3298 0.30085 2017 10 3 58029 0.1938 0.3284 0.29963 2017 10 4 58030 0.1929 0.3270 0.29823 2017 10 5 58031 0.1920 0.3257 0.29668 2017 10 6 58032 0.1910 0.3243 0.29501 2017 10 7 58033 0.1900 0.3230 0.29331 2017 10 8 58034 0.1890 0.3217 0.29165 2017 10 9 58035 0.1879 0.3204 0.29010 2017 10 10 58036 0.1869 0.3191 0.28868 2017 10 11 58037 0.1858 0.3179 0.28737 2017 10 12 58038 0.1847 0.3166 0.28613 2017 10 13 58039 0.1835 0.3154 0.28489 2017 10 14 58040 0.1823 0.3142 0.28359 2017 10 15 58041 0.1812 0.3130 0.28220 2017 10 16 58042 0.1799 0.3118 0.28066 2017 10 17 58043 0.1787 0.3107 0.27904 2017 10 18 58044 0.1775 0.3095 0.27738 2017 10 19 58045 0.1762 0.3084 0.27572 2017 10 20 58046 0.1749 0.3073 0.27412 2017 10 21 58047 0.1736 0.3062 0.27261 2017 10 22 58048 0.1722 0.3052 0.27122 2017 10 23 58049 0.1709 0.3041 0.26994 2017 10 24 58050 0.1695 0.3031 0.26877 2017 10 25 58051 0.1681 0.3021 0.26767 2017 10 26 58052 0.1667 0.3011 0.26660 2017 10 27 58053 0.1652 0.3001 0.26552 2017 10 28 58054 0.1638 0.2992 0.26438 2017 10 29 58055 0.1623 0.2983 0.26313 2017 10 30 58056 0.1608 0.2974 0.26175 2017 10 31 58057 0.1593 0.2965 0.26021 2017 11 1 58058 0.1578 0.2956 0.25850 2017 11 2 58059 0.1563 0.2948 0.25666 2017 11 3 58060 0.1547 0.2940 0.25475 2017 11 4 58061 0.1531 0.2932 0.25284 2017 11 5 58062 0.1516 0.2924 0.25102 2017 11 6 58063 0.1500 0.2917 0.24934 2017 11 7 58064 0.1484 0.2910 0.24781 2017 11 8 58065 0.1467 0.2903 0.24638 2017 11 9 58066 0.1451 0.2896 0.24499 2017 11 10 58067 0.1435 0.2890 0.24358 2017 11 11 58068 0.1418 0.2883 0.24210 2017 11 12 58069 0.1401 0.2878 0.24055 2017 11 13 58070 0.1385 0.2872 0.23892 2017 11 14 58071 0.1368 0.2866 0.23726 2017 11 15 58072 0.1351 0.2861 0.23561 2017 11 16 58073 0.1334 0.2856 0.23402 2017 11 17 58074 0.1316 0.2852 0.23252 2017 11 18 58075 0.1299 0.2847 0.23114 2017 11 19 58076 0.1282 0.2843 0.22988 2017 11 20 58077 0.1265 0.2839 0.22874 2017 11 21 58078 0.1247 0.2836 0.22770 2017 11 22 58079 0.1230 0.2832 0.22672 2017 11 23 58080 0.1212 0.2829 0.22576 2017 11 24 58081 0.1194 0.2827 0.22477 2017 11 25 58082 0.1177 0.2824 0.22370 2017 11 26 58083 0.1159 0.2822 0.22253 2017 11 27 58084 0.1141 0.2820 0.22122 2017 11 28 58085 0.1123 0.2818 0.21976 2017 11 29 58086 0.1106 0.2817 0.21817 2017 11 30 58087 0.1088 0.2815 0.21648 2017 12 1 58088 0.1070 0.2815 0.21476 2017 12 2 58089 0.1052 0.2814 0.21307 2017 12 3 58090 0.1034 0.2814 0.21149 2017 12 4 58091 0.1016 0.2814 0.21005 2017 12 5 58092 0.0999 0.2814 0.20873 2017 12 6 58093 0.0981 0.2814 0.20749 2017 12 7 58094 0.0963 0.2815 0.20626 2017 12 8 58095 0.0945 0.2816 0.20496 2017 12 9 58096 0.0927 0.2817 0.20360 2017 12 10 58097 0.0910 0.2819 0.20217 2017 12 11 58098 0.0892 0.2821 0.20071 2017 12 12 58099 0.0874 0.2823 0.19927 2017 12 13 58100 0.0857 0.2825 0.19788 2017 12 14 58101 0.0839 0.2828 0.19659 2017 12 15 58102 0.0822 0.2831 0.19541 2017 12 16 58103 0.0804 0.2834 0.19436 2017 12 17 58104 0.0787 0.2838 0.19343 2017 12 18 58105 0.0770 0.2842 0.19260 2017 12 19 58106 0.0752 0.2846 0.19185 2017 12 20 58107 0.0735 0.2850 0.19113 2017 12 21 58108 0.0718 0.2855 0.19040 2017 12 22 58109 0.0701 0.2859 0.18963 2017 12 23 58110 0.0684 0.2865 0.18876 2017 12 24 58111 0.0668 0.2870 0.18778 2017 12 25 58112 0.0651 0.2876 0.18668 2017 12 26 58113 0.0635 0.2882 0.18546 2017 12 27 58114 0.0618 0.2888 0.18415 2017 12 28 58115 0.0602 0.2894 0.18279 2017 12 29 58116 0.0586 0.2901 0.18145 2017 12 30 58117 0.0570 0.2908 0.18018 2017 12 31 58118 0.0554 0.2915 0.17904 2018 1 1 58119 0.0538 0.2922 0.17804 2018 1 2 58120 0.0523 0.2930 0.17714 2018 1 3 58121 0.0507 0.2938 0.17626 2018 1 4 58122 0.0492 0.2946 0.17534 2018 1 5 58123 0.0477 0.2955 0.17432 2018 1 6 58124 0.0462 0.2964 0.17319 2018 1 7 58125 0.0447 0.2972 0.17197 2018 1 8 58126 0.0433 0.2982 0.17072 2018 1 9 58127 0.0418 0.2991 0.16949 2018 1 10 58128 0.0404 0.3001 0.16831 2018 1 11 58129 0.0390 0.3010 0.16722 2018 1 12 58130 0.0376 0.3021 0.16624 2018 1 13 58131 0.0363 0.3031 0.16534 2018 1 14 58132 0.0349 0.3041 0.16453 2018 1 15 58133 0.0336 0.3052 0.16378 2018 1 16 58134 0.0323 0.3063 0.16305 2018 1 17 58135 0.0310 0.3074 0.16231 2018 1 18 58136 0.0298 0.3086 0.16152 2018 1 19 58137 0.0286 0.3097 0.16064 2018 1 20 58138 0.0273 0.3109 0.15965 2018 1 21 58139 0.0262 0.3121 0.15853 2018 1 22 58140 0.0250 0.3133 0.15729 2018 1 23 58141 0.0238 0.3146 0.15595 2018 1 24 58142 0.0227 0.3158 0.15453 2018 1 25 58143 0.0216 0.3171 0.15309 2018 1 26 58144 0.0206 0.3184 0.15168 2018 1 27 58145 0.0195 0.3197 0.15033 2018 1 28 58146 0.0185 0.3210 0.14906 2018 1 29 58147 0.0175 0.3224 0.14787 2018 1 30 58148 0.0165 0.3237 0.14668 2018 1 31 58149 0.0156 0.3251 0.14542 2018 2 1 58150 0.0147 0.3265 0.14403 2018 2 2 58151 0.0138 0.3279 0.14250 2018 2 3 58152 0.0129 0.3293 0.14085 2018 2 4 58153 0.0121 0.3308 0.13916 2018 2 5 58154 0.0113 0.3322 0.13747 2018 2 6 58155 0.0105 0.3337 0.13581 2018 2 7 58156 0.0098 0.3352 0.13424 2018 2 8 58157 0.0090 0.3367 0.13278 2018 2 9 58158 0.0083 0.3382 0.13141 2018 2 10 58159 0.0077 0.3397 0.13013 2018 2 11 58160 0.0070 0.3412 0.12894 2018 2 12 58161 0.0064 0.3428 0.12783 2018 2 13 58162 0.0059 0.3443 0.12675 2018 2 14 58163 0.0053 0.3459 0.12563 2018 2 15 58164 0.0048 0.3474 0.12442 2018 2 16 58165 0.0043 0.3490 0.12309 2018 2 17 58166 0.0039 0.3506 0.12163 2018 2 18 58167 0.0034 0.3522 0.12008 2018 2 19 58168 0.0030 0.3538 0.11846 2018 2 20 58169 0.0027 0.3554 0.11678 2018 2 21 58170 0.0023 0.3571 0.11515 2018 2 22 58171 0.0020 0.3587 0.11358 2018 2 23 58172 0.0017 0.3603 0.11212 2018 2 24 58173 0.0015 0.3620 0.11076 2018 2 25 58174 0.0013 0.3636 0.10948 2018 2 26 58175 0.0011 0.3652 0.10815 2018 2 27 58176 0.0010 0.3669 0.10671 2018 2 28 58177 0.0008 0.3686 0.10512 2018 3 1 58178 0.0008 0.3702 0.10334 2018 3 2 58179 0.0007 0.3719 0.10138 2018 3 3 58180 0.0007 0.3736 0.09932 2018 3 4 58181 0.0007 0.3752 0.09723 2018 3 5 58182 0.0007 0.3769 0.09516 2018 3 6 58183 0.0008 0.3786 0.09317 2018 3 7 58184 0.0009 0.3802 0.09131 2018 3 8 58185 0.0010 0.3819 0.08966 2018 3 9 58186 0.0012 0.3836 0.08819 2018 3 10 58187 0.0014 0.3852 0.08684 2018 3 11 58188 0.0016 0.3869 0.08557 2018 3 12 58189 0.0019 0.3886 0.08434 2018 3 13 58190 0.0022 0.3902 0.08310 2018 3 14 58191 0.0025 0.3919 0.08178 2018 3 15 58192 0.0028 0.3936 0.08038 2018 3 16 58193 0.0032 0.3952 0.07888 2018 3 17 58194 0.0036 0.3969 0.07728 2018 3 18 58195 0.0041 0.3985 0.07554 2018 3 19 58196 0.0045 0.4002 0.07368 2018 3 20 58197 0.0050 0.4018 0.07179 2018 3 21 58198 0.0056 0.4034 0.06988 2018 3 22 58199 0.0061 0.4050 0.06802 2018 3 23 58200 0.0067 0.4066 0.06629 2018 3 24 58201 0.0074 0.4082 0.06468 2018 3 25 58202 0.0080 0.4098 0.06310 2018 3 26 58203 0.0087 0.4114 0.06151 2018 3 27 58204 0.0094 0.4130 0.05986 2018 3 28 58205 0.0102 0.4146 0.05807 2018 3 29 58206 0.0109 0.4161 0.05614 2018 3 30 58207 0.0117 0.4177 0.05411 2018 3 31 58208 0.0126 0.4192 0.05204 2018 4 1 58209 0.0134 0.4208 0.05001 2018 4 2 58210 0.0143 0.4223 0.04807 2018 4 3 58211 0.0152 0.4238 0.04628 2018 4 4 58212 0.0162 0.4253 0.04469 2018 4 5 58213 0.0171 0.4267 0.04326 2018 4 6 58214 0.0181 0.4282 0.04194 2018 4 7 58215 0.0191 0.4296 0.04071 2018 4 8 58216 0.0202 0.4311 0.03951 2018 4 9 58217 0.0213 0.4325 0.03831 2018 4 10 58218 0.0224 0.4339 0.03709 2018 4 11 58219 0.0235 0.4353 0.03573 2018 4 12 58220 0.0246 0.4367 0.03421 2018 4 13 58221 0.0258 0.4380 0.03252 2018 4 14 58222 0.0270 0.4393 0.03066 2018 4 15 58223 0.0283 0.4407 0.02874 2018 4 16 58224 0.0295 0.4420 0.02679 2018 4 17 58225 0.0308 0.4433 0.02484 2018 4 18 58226 0.0321 0.4445 0.02297 2018 4 19 58227 0.0334 0.4458 0.02127 2018 4 20 58228 0.0347 0.4470 0.01970 2018 4 21 58229 0.0361 0.4482 0.01826 2018 4 22 58230 0.0375 0.4494 0.01688 2018 4 23 58231 0.0389 0.4506 0.01549 2018 4 24 58232 0.0403 0.4517 0.01406 2018 4 25 58233 0.0418 0.4528 0.01256 2018 4 26 58234 0.0432 0.4539 0.01098 2018 4 27 58235 0.0447 0.4550 0.00931 2018 4 28 58236 0.0462 0.4561 0.00760 2018 4 29 58237 0.0478 0.4571 0.00595 2018 4 30 58238 0.0493 0.4581 0.00443 2018 5 1 58239 0.0509 0.4591 0.00298 2018 5 2 58240 0.0524 0.4601 0.00162 2018 5 3 58241 0.0540 0.4610 0.00040 2018 5 4 58242 0.0557 0.4619 -0.00070 2018 5 5 58243 0.0573 0.4628 -0.00176 2018 5 6 58244 0.0589 0.4637 -0.00281 2018 5 7 58245 0.0606 0.4646 -0.00388 2018 5 8 58246 0.0623 0.4654 -0.00500 2018 5 9 58247 0.0640 0.4662 -0.00620 2018 5 10 58248 0.0657 0.4670 -0.00747 2018 5 11 58249 0.0674 0.4677 -0.00882 2018 5 12 58250 0.0691 0.4684 -0.01027 2018 5 13 58251 0.0708 0.4691 -0.01180 2018 5 14 58252 0.0726 0.4698 -0.01337 2018 5 15 58253 0.0744 0.4704 -0.01487 2018 5 16 58254 0.0761 0.4710 -0.01627 2018 5 17 58255 0.0779 0.4716 -0.01760 2018 5 18 58256 0.0797 0.4722 -0.01882 2018 5 19 58257 0.0815 0.4727 -0.01996 2018 5 20 58258 0.0833 0.4732 -0.02107 2018 5 21 58259 0.0851 0.4737 -0.02222 2018 5 22 58260 0.0870 0.4742 -0.02343 2018 5 23 58261 0.0888 0.4746 -0.02472 2018 5 24 58262 0.0906 0.4750 -0.02608 2018 5 25 58263 0.0925 0.4753 -0.02748 2018 5 26 58264 0.0943 0.4757 -0.02882 2018 5 27 58265 0.0962 0.4760 -0.03004 2018 5 28 58266 0.0981 0.4763 -0.03113 2018 5 29 58267 0.0999 0.4765 -0.03205 2018 5 30 58268 0.1018 0.4767 -0.03280 2018 5 31 58269 0.1037 0.4769 -0.03344 2018 6 1 58270 0.1055 0.4771 -0.03406 2018 6 2 58271 0.1074 0.4772 -0.03469 2018 6 3 58272 0.1093 0.4773 -0.03536 2018 6 4 58273 0.1112 0.4774 -0.03608 2018 6 5 58274 0.1130 0.4775 -0.03686 2018 6 6 58275 0.1149 0.4775 -0.03773 2018 6 7 58276 0.1168 0.4775 -0.03870 2018 6 8 58277 0.1187 0.4774 -0.03977 2018 6 9 58278 0.1205 0.4774 -0.04094 2018 6 10 58279 0.1224 0.4773 -0.04214 2018 6 11 58280 0.1243 0.4772 -0.04332 2018 6 12 58281 0.1261 0.4770 -0.04437 2018 6 13 58282 0.1280 0.4768 -0.04526 2018 6 14 58283 0.1298 0.4766 -0.04601 2018 6 15 58284 0.1317 0.4764 -0.04665 2018 6 16 58285 0.1335 0.4761 -0.04721 2018 6 17 58286 0.1353 0.4758 -0.04774 2018 6 18 58287 0.1372 0.4755 -0.04831 2018 6 19 58288 0.1390 0.4751 -0.04894 2018 6 20 58289 0.1408 0.4747 -0.04960 2018 6 21 58290 0.1426 0.4743 -0.05028 2018 6 22 58291 0.1444 0.4739 -0.05098 2018 6 23 58292 0.1462 0.4734 -0.05162 2018 6 24 58293 0.1479 0.4729 -0.05215 2018 6 25 58294 0.1497 0.4724 -0.05253 2018 6 26 58295 0.1514 0.4719 -0.05275 2018 6 27 58296 0.1532 0.4713 -0.05283 2018 6 28 58297 0.1549 0.4707 -0.05280 2018 6 29 58298 0.1566 0.4700 -0.05272 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) 57912 -101.09 0.30 -12.48 0.03 57913 -101.18 0.30 -12.61 0.03 57914 -101.17 0.30 -12.71 0.03 57915 -101.19 0.30 -12.72 0.01 57916 -101.35 0.30 -12.72 0.01 57917 -101.65 0.30 -12.79 0.01 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57912 -0.007 0.119 0.097 0.030 57913 0.006 0.119 0.088 0.030 57914 0.005 0.119 0.106 0.030 57915 0.001 0.119 0.147 0.010 57916 -0.008 0.119 0.192 0.010 57917 -0.038 0.119 0.216 0.010 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).