********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 13 July 2017 Vol. XXX No. 028 ______________________________________________________________________ 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 7 7 57941 0.17494 .00009 0.44597 .00009 0.357574 0.000014 17 7 8 57942 0.17771 .00009 0.44529 .00009 0.357492 0.000014 17 7 9 57943 0.18008 .00009 0.44467 .00009 0.357417 0.000014 17 7 10 57944 0.18199 .00009 0.44387 .00009 0.357323 0.000011 17 7 11 57945 0.18364 .00009 0.44283 .00009 0.357129 0.000010 17 7 12 57946 0.18528 .00009 0.44174 .00009 0.356778 0.000009 17 7 13 57947 0.18710 .00009 0.44058 .00009 0.356306 0.000009 _______________________________________________________________________ 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 + 0.0907 cos A + 0.0974 sin A - 0.0321 cos C - 0.0144 sin C y = 0.3596 + 0.0926 cos A - 0.0764 sin A - 0.0144 cos C + 0.0321 sin C UT1-UTC = 0.3523 - 0.00113 (MJD - 57955) - (UT2-UT1) where A = 2*pi*(MJD-57947)/365.25 and C = 2*pi*(MJD-57947)/435. TAI-UTC(MJD 57948) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57947)**0.80 S t = 0.00025 (MJD-57947)**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 14 57948 0.1889 0.4395 0.35575 2017 7 15 57949 0.1908 0.4384 0.35513 2017 7 16 57950 0.1925 0.4374 0.35450 2017 7 17 57951 0.1940 0.4363 0.35387 2017 7 18 57952 0.1954 0.4353 0.35328 2017 7 19 57953 0.1967 0.4342 0.35276 2017 7 20 57954 0.1981 0.4330 0.35235 2017 7 21 57955 0.1994 0.4318 0.35204 2017 7 22 57956 0.2007 0.4306 0.35180 2017 7 23 57957 0.2020 0.4294 0.35156 2017 7 24 57958 0.2033 0.4281 0.35125 2017 7 25 57959 0.2046 0.4268 0.35079 2017 7 26 57960 0.2058 0.4255 0.35018 2017 7 27 57961 0.2070 0.4242 0.34950 2017 7 28 57962 0.2082 0.4229 0.34880 2017 7 29 57963 0.2092 0.4216 0.34815 2017 7 30 57964 0.2102 0.4202 0.34760 2017 7 31 57965 0.2111 0.4188 0.34715 2017 8 1 57966 0.2121 0.4174 0.34683 2017 8 2 57967 0.2130 0.4159 0.34662 2017 8 3 57968 0.2139 0.4144 0.34651 2017 8 4 57969 0.2147 0.4129 0.34647 2017 8 5 57970 0.2155 0.4114 0.34646 2017 8 6 57971 0.2163 0.4099 0.34644 2017 8 7 57972 0.2170 0.4084 0.34636 2017 8 8 57973 0.2177 0.4069 0.34618 2017 8 9 57974 0.2184 0.4053 0.34585 2017 8 10 57975 0.2190 0.4038 0.34536 2017 8 11 57976 0.2196 0.4022 0.34471 2017 8 12 57977 0.2202 0.4006 0.34395 2017 8 13 57978 0.2208 0.3990 0.34312 2017 8 14 57979 0.2213 0.3974 0.34227 2017 8 15 57980 0.2218 0.3958 0.34146 2017 8 16 57981 0.2222 0.3941 0.34072 2017 8 17 57982 0.2226 0.3925 0.34006 2017 8 18 57983 0.2230 0.3908 0.33946 2017 8 19 57984 0.2234 0.3892 0.33887 2017 8 20 57985 0.2237 0.3875 0.33821 2017 8 21 57986 0.2240 0.3858 0.33746 2017 8 22 57987 0.2242 0.3841 0.33658 2017 8 23 57988 0.2244 0.3825 0.33561 2017 8 24 57989 0.2246 0.3808 0.33457 2017 8 25 57990 0.2248 0.3791 0.33354 2017 8 26 57991 0.2249 0.3774 0.33256 2017 8 27 57992 0.2250 0.3756 0.33166 2017 8 28 57993 0.2250 0.3739 0.33087 2017 8 29 57994 0.2250 0.3722 0.33019 2017 8 30 57995 0.2250 0.3705 0.32960 2017 8 31 57996 0.2250 0.3688 0.32908 2017 9 1 57997 0.2249 0.3671 0.32859 2017 9 2 57998 0.2248 0.3653 0.32808 2017 9 3 57999 0.2246 0.3636 0.32750 2017 9 4 58000 0.2244 0.3619 0.32681 2017 9 5 58001 0.2242 0.3602 0.32597 2017 9 6 58002 0.2240 0.3584 0.32496 2017 9 7 58003 0.2237 0.3567 0.32378 2017 9 8 58004 0.2234 0.3550 0.32247 2017 9 9 58005 0.2230 0.3533 0.32109 2017 9 10 58006 0.2227 0.3516 0.31972 2017 9 11 58007 0.2223 0.3499 0.31842 2017 9 12 58008 0.2218 0.3482 0.31722 2017 9 13 58009 0.2213 0.3465 0.31614 2017 9 14 58010 0.2208 0.3448 0.31516 2017 9 15 58011 0.2203 0.3431 0.31420 2017 9 16 58012 0.2197 0.3414 0.31322 2017 9 17 58013 0.2191 0.3397 0.31216 2017 9 18 58014 0.2185 0.3381 0.31098 2017 9 19 58015 0.2178 0.3364 0.30969 2017 9 20 58016 0.2171 0.3347 0.30832 2017 9 21 58017 0.2164 0.3331 0.30692 2017 9 22 58018 0.2156 0.3315 0.30556 2017 9 23 58019 0.2148 0.3298 0.30427 2017 9 24 58020 0.2140 0.3282 0.30308 2017 9 25 58021 0.2131 0.3266 0.30201 2017 9 26 58022 0.2122 0.3250 0.30104 2017 9 27 58023 0.2113 0.3234 0.30016 2017 9 28 58024 0.2104 0.3219 0.29933 2017 9 29 58025 0.2094 0.3203 0.29851 2017 9 30 58026 0.2084 0.3188 0.29765 2017 10 1 58027 0.2074 0.3172 0.29670 2017 10 2 58028 0.2063 0.3157 0.29563 2017 10 3 58029 0.2052 0.3142 0.29441 2017 10 4 58030 0.2041 0.3127 0.29301 2017 10 5 58031 0.2029 0.3113 0.29146 2017 10 6 58032 0.2018 0.3098 0.28980 2017 10 7 58033 0.2005 0.3084 0.28811 2017 10 8 58034 0.1993 0.3069 0.28645 2017 10 9 58035 0.1981 0.3055 0.28491 2017 10 10 58036 0.1968 0.3041 0.28349 2017 10 11 58037 0.1955 0.3028 0.28219 2017 10 12 58038 0.1941 0.3014 0.28095 2017 10 13 58039 0.1928 0.3001 0.27971 2017 10 14 58040 0.1914 0.2988 0.27842 2017 10 15 58041 0.1899 0.2975 0.27704 2017 10 16 58042 0.1885 0.2962 0.27555 2017 10 17 58043 0.1870 0.2949 0.27398 2017 10 18 58044 0.1856 0.2937 0.27236 2017 10 19 58045 0.1840 0.2925 0.27075 2017 10 20 58046 0.1825 0.2913 0.26920 2017 10 21 58047 0.1810 0.2901 0.26774 2017 10 22 58048 0.1794 0.2890 0.26639 2017 10 23 58049 0.1778 0.2878 0.26516 2017 10 24 58050 0.1762 0.2867 0.26403 2017 10 25 58051 0.1745 0.2857 0.26298 2017 10 26 58052 0.1729 0.2846 0.26195 2017 10 27 58053 0.1712 0.2836 0.26091 2017 10 28 58054 0.1695 0.2826 0.25980 2017 10 29 58055 0.1677 0.2816 0.25859 2017 10 30 58056 0.1660 0.2806 0.25720 2017 10 31 58057 0.1642 0.2797 0.25565 2017 11 1 58058 0.1625 0.2788 0.25394 2017 11 2 58059 0.1607 0.2779 0.25210 2017 11 3 58060 0.1589 0.2771 0.25018 2017 11 4 58061 0.1570 0.2762 0.24827 2017 11 5 58062 0.1552 0.2754 0.24646 2017 11 6 58063 0.1534 0.2747 0.24478 2017 11 7 58064 0.1515 0.2739 0.24324 2017 11 8 58065 0.1496 0.2732 0.24182 2017 11 9 58066 0.1477 0.2725 0.24044 2017 11 10 58067 0.1458 0.2718 0.23904 2017 11 11 58068 0.1439 0.2712 0.23757 2017 11 12 58069 0.1419 0.2706 0.23602 2017 11 13 58070 0.1400 0.2700 0.23441 2017 11 14 58071 0.1380 0.2695 0.23276 2017 11 15 58072 0.1361 0.2690 0.23111 2017 11 16 58073 0.1341 0.2685 0.22952 2017 11 17 58074 0.1321 0.2680 0.22803 2017 11 18 58075 0.1301 0.2676 0.22665 2017 11 19 58076 0.1281 0.2672 0.22539 2017 11 20 58077 0.1261 0.2668 0.22425 2017 11 21 58078 0.1241 0.2664 0.22321 2017 11 22 58079 0.1220 0.2661 0.22222 2017 11 23 58080 0.1200 0.2659 0.22125 2017 11 24 58081 0.1180 0.2656 0.22026 2017 11 25 58082 0.1159 0.2654 0.21919 2017 11 26 58083 0.1139 0.2652 0.21801 2017 11 27 58084 0.1118 0.2650 0.21669 2017 11 28 58085 0.1098 0.2649 0.21522 2017 11 29 58086 0.1077 0.2648 0.21362 2017 11 30 58087 0.1057 0.2647 0.21192 2017 12 1 58088 0.1036 0.2647 0.21017 2017 12 2 58089 0.1016 0.2647 0.20847 2017 12 3 58090 0.0995 0.2647 0.20687 2017 12 4 58091 0.0974 0.2648 0.20541 2017 12 5 58092 0.0954 0.2649 0.20407 2017 12 6 58093 0.0933 0.2650 0.20281 2017 12 7 58094 0.0913 0.2651 0.20154 2017 12 8 58095 0.0892 0.2653 0.20022 2017 12 9 58096 0.0872 0.2655 0.19883 2017 12 10 58097 0.0852 0.2658 0.19737 2017 12 11 58098 0.0831 0.2661 0.19588 2017 12 12 58099 0.0811 0.2664 0.19441 2017 12 13 58100 0.0791 0.2667 0.19299 2017 12 14 58101 0.0770 0.2671 0.19167 2017 12 15 58102 0.0750 0.2675 0.19047 2017 12 16 58103 0.0730 0.2679 0.18939 2017 12 17 58104 0.0710 0.2684 0.18843 2017 12 18 58105 0.0690 0.2688 0.18757 2017 12 19 58106 0.0671 0.2694 0.18679 2017 12 20 58107 0.0651 0.2699 0.18604 2017 12 21 58108 0.0631 0.2705 0.18528 2017 12 22 58109 0.0612 0.2711 0.18446 2017 12 23 58110 0.0592 0.2718 0.18355 2017 12 24 58111 0.0573 0.2724 0.18251 2017 12 25 58112 0.0554 0.2731 0.18135 2017 12 26 58113 0.0535 0.2739 0.18005 2017 12 27 58114 0.0516 0.2746 0.17866 2017 12 28 58115 0.0497 0.2754 0.17720 2017 12 29 58116 0.0479 0.2763 0.17573 2017 12 30 58117 0.0460 0.2771 0.17433 2017 12 31 58118 0.0442 0.2780 0.17303 2018 1 1 58119 0.0424 0.2789 0.17185 2018 1 2 58120 0.0406 0.2798 0.17075 2018 1 3 58121 0.0388 0.2808 0.16966 2018 1 4 58122 0.0371 0.2818 0.16852 2018 1 5 58123 0.0354 0.2828 0.16729 2018 1 6 58124 0.0336 0.2838 0.16598 2018 1 7 58125 0.0319 0.2849 0.16462 2018 1 8 58126 0.0303 0.2860 0.16326 2018 1 9 58127 0.0286 0.2871 0.16197 2018 1 10 58128 0.0270 0.2883 0.16078 2018 1 11 58129 0.0253 0.2895 0.15972 2018 1 12 58130 0.0237 0.2907 0.15881 2018 1 13 58131 0.0222 0.2919 0.15804 2018 1 14 58132 0.0206 0.2932 0.15740 2018 1 15 58133 0.0191 0.2945 0.15686 2018 1 16 58134 0.0176 0.2958 0.15638 2018 1 17 58135 0.0161 0.2971 0.15592 2018 1 18 58136 0.0147 0.2984 0.15543 2018 1 19 58137 0.0132 0.2998 0.15486 2018 1 20 58138 0.0118 0.3012 0.15416 2018 1 21 58139 0.0104 0.3026 0.15331 2018 1 22 58140 0.0091 0.3041 0.15229 2018 1 23 58141 0.0078 0.3055 0.15113 2018 1 24 58142 0.0065 0.3070 0.14987 2018 1 25 58143 0.0052 0.3085 0.14854 2018 1 26 58144 0.0040 0.3101 0.14722 2018 1 27 58145 0.0027 0.3116 0.14596 2018 1 28 58146 0.0016 0.3132 0.14477 2018 1 29 58147 0.0004 0.3148 0.14363 2018 1 30 58148 -0.0007 0.3164 0.14249 2018 1 31 58149 -0.0018 0.3180 0.14127 2018 2 1 58150 -0.0029 0.3197 0.13992 2018 2 2 58151 -0.0039 0.3213 0.13841 2018 2 3 58152 -0.0049 0.3230 0.13679 2018 2 4 58153 -0.0059 0.3247 0.13512 2018 2 5 58154 -0.0069 0.3264 0.13346 2018 2 6 58155 -0.0078 0.3281 0.13188 2018 2 7 58156 -0.0087 0.3299 0.13043 2018 2 8 58157 -0.0095 0.3316 0.12912 2018 2 9 58158 -0.0103 0.3334 0.12795 2018 2 10 58159 -0.0111 0.3352 0.12690 2018 2 11 58160 -0.0119 0.3370 0.12593 2018 2 12 58161 -0.0126 0.3388 0.12502 2018 2 13 58162 -0.0133 0.3406 0.12411 2018 2 14 58163 -0.0139 0.3425 0.12315 2018 2 15 58164 -0.0145 0.3443 0.12210 2018 2 16 58165 -0.0151 0.3462 0.12092 2018 2 17 58166 -0.0157 0.3481 0.11961 2018 2 18 58167 -0.0162 0.3500 0.11817 2018 2 19 58168 -0.0167 0.3519 0.11663 2018 2 20 58169 -0.0171 0.3538 0.11501 2018 2 21 58170 -0.0175 0.3557 0.11337 2018 2 22 58171 -0.0179 0.3576 0.11172 2018 2 23 58172 -0.0182 0.3595 0.11010 2018 2 24 58173 -0.0185 0.3614 0.10858 2018 2 25 58174 -0.0188 0.3634 0.10720 2018 2 26 58175 -0.0190 0.3653 0.10586 2018 2 27 58176 -0.0192 0.3673 0.10443 2018 2 28 58177 -0.0194 0.3692 0.10287 2018 3 1 58178 -0.0195 0.3712 0.10115 2018 3 2 58179 -0.0196 0.3732 0.09928 2018 3 3 58180 -0.0197 0.3751 0.09732 2018 3 4 58181 -0.0197 0.3771 0.09533 2018 3 5 58182 -0.0197 0.3791 0.09337 2018 3 6 58183 -0.0196 0.3811 0.09147 2018 3 7 58184 -0.0196 0.3830 0.08966 2018 3 8 58185 -0.0194 0.3850 0.08798 2018 3 9 58186 -0.0193 0.3870 0.08639 2018 3 10 58187 -0.0191 0.3890 0.08488 2018 3 11 58188 -0.0189 0.3909 0.08345 2018 3 12 58189 -0.0186 0.3929 0.08208 2018 3 13 58190 -0.0183 0.3949 0.08070 2018 3 14 58191 -0.0180 0.3969 0.07926 2018 3 15 58192 -0.0176 0.3988 0.07770 2018 3 16 58193 -0.0172 0.4008 0.07601 2018 3 17 58194 -0.0167 0.4027 0.07419 2018 3 18 58195 -0.0162 0.4047 0.07228 2018 3 19 58196 -0.0157 0.4066 0.07033 2018 3 20 58197 -0.0152 0.4086 0.06837 2018 3 21 58198 -0.0146 0.4105 0.06651 2018 3 22 58199 -0.0140 0.4124 0.06478 2018 3 23 58200 -0.0133 0.4144 0.06319 2018 3 24 58201 -0.0126 0.4163 0.06172 2018 3 25 58202 -0.0119 0.4182 0.06030 2018 3 26 58203 -0.0112 0.4201 0.05882 2018 3 27 58204 -0.0104 0.4220 0.05719 2018 3 28 58205 -0.0095 0.4238 0.05540 2018 3 29 58206 -0.0087 0.4257 0.05341 2018 3 30 58207 -0.0078 0.4276 0.05128 2018 3 31 58208 -0.0069 0.4294 0.04907 2018 4 1 58209 -0.0059 0.4312 0.04687 2018 4 2 58210 -0.0049 0.4330 0.04473 2018 4 3 58211 -0.0039 0.4349 0.04269 2018 4 4 58212 -0.0028 0.4366 0.04081 2018 4 5 58213 -0.0017 0.4384 0.03914 2018 4 6 58214 -0.0006 0.4402 0.03764 2018 4 7 58215 0.0005 0.4419 0.03627 2018 4 8 58216 0.0017 0.4437 0.03495 2018 4 9 58217 0.0029 0.4454 0.03366 2018 4 10 58218 0.0042 0.4471 0.03234 2018 4 11 58219 0.0054 0.4487 0.03094 2018 4 12 58220 0.0067 0.4504 0.02944 2018 4 13 58221 0.0081 0.4520 0.02784 2018 4 14 58222 0.0094 0.4537 0.02616 2018 4 15 58223 0.0108 0.4553 0.02436 2018 4 16 58224 0.0122 0.4569 0.02248 2018 4 17 58225 0.0137 0.4584 0.02061 2018 4 18 58226 0.0152 0.4600 0.01879 2018 4 19 58227 0.0167 0.4615 0.01705 2018 4 20 58228 0.0182 0.4630 0.01547 2018 4 21 58229 0.0197 0.4645 0.01401 2018 4 22 58230 0.0213 0.4659 0.01255 2018 4 23 58231 0.0229 0.4674 0.01107 2018 4 24 58232 0.0246 0.4688 0.00951 2018 4 25 58233 0.0262 0.4702 0.00781 2018 4 26 58234 0.0279 0.4716 0.00601 2018 4 27 58235 0.0296 0.4729 0.00416 2018 4 28 58236 0.0313 0.4742 0.00234 2018 4 29 58237 0.0331 0.4755 0.00059 2018 4 30 58238 0.0348 0.4768 -0.00103 2018 5 1 58239 0.0366 0.4780 -0.00247 2018 5 2 58240 0.0385 0.4792 -0.00371 2018 5 3 58241 0.0403 0.4804 -0.00479 2018 5 4 58242 0.0421 0.4816 -0.00576 2018 5 5 58243 0.0440 0.4827 -0.00666 2018 5 6 58244 0.0459 0.4838 -0.00755 2018 5 7 58245 0.0478 0.4849 -0.00844 2018 5 8 58246 0.0498 0.4860 -0.00939 2018 5 9 58247 0.0517 0.4870 -0.01046 2018 5 10 58248 0.0537 0.4880 -0.01170 2018 5 11 58249 0.0557 0.4890 -0.01310 2018 5 12 58250 0.0577 0.4899 -0.01465 2018 5 13 58251 0.0597 0.4908 -0.01622 2018 5 14 58252 0.0617 0.4917 -0.01779 2018 5 15 58253 0.0638 0.4925 -0.01932 2018 5 16 58254 0.0658 0.4934 -0.02073 2018 5 17 58255 0.0679 0.4942 -0.02196 2018 5 18 58256 0.0700 0.4949 -0.02305 2018 5 19 58257 0.0721 0.4956 -0.02405 2018 5 20 58258 0.0742 0.4963 -0.02503 2018 5 21 58259 0.0763 0.4970 -0.02605 2018 5 22 58260 0.0785 0.4976 -0.02711 2018 5 23 58261 0.0806 0.4982 -0.02821 2018 5 24 58262 0.0827 0.4988 -0.02936 2018 5 25 58263 0.0849 0.4994 -0.03053 2018 5 26 58264 0.0871 0.4999 -0.03168 2018 5 27 58265 0.0893 0.5003 -0.03273 2018 5 28 58266 0.0914 0.5008 -0.03361 2018 5 29 58267 0.0936 0.5012 -0.03442 2018 5 30 58268 0.0958 0.5016 -0.03514 2018 5 31 58269 0.0980 0.5019 -0.03575 2018 6 1 58270 0.1002 0.5022 -0.03625 2018 6 2 58271 0.1024 0.5025 -0.03675 2018 6 3 58272 0.1046 0.5027 -0.03725 2018 6 4 58273 0.1069 0.5030 -0.03780 2018 6 5 58274 0.1091 0.5031 -0.03843 2018 6 6 58275 0.1113 0.5033 -0.03914 2018 6 7 58276 0.1135 0.5034 -0.03991 2018 6 8 58277 0.1157 0.5035 -0.04075 2018 6 9 58278 0.1180 0.5035 -0.04166 2018 6 10 58279 0.1202 0.5035 -0.04264 2018 6 11 58280 0.1224 0.5035 -0.04361 2018 6 12 58281 0.1246 0.5034 -0.04449 2018 6 13 58282 0.1268 0.5034 -0.04528 2018 6 14 58283 0.1290 0.5032 -0.04600 2018 6 15 58284 0.1312 0.5031 -0.04666 2018 6 16 58285 0.1334 0.5029 -0.04729 2018 6 17 58286 0.1356 0.5027 -0.04794 2018 6 18 58287 0.1378 0.5024 -0.04867 2018 6 19 58288 0.1400 0.5021 -0.04947 2018 6 20 58289 0.1422 0.5018 -0.05033 2018 6 21 58290 0.1443 0.5014 -0.05122 2018 6 22 58291 0.1465 0.5011 -0.05208 2018 6 23 58292 0.1487 0.5006 -0.05284 2018 6 24 58293 0.1508 0.5002 -0.05345 2018 6 25 58294 0.1529 0.4997 -0.05392 2018 6 26 58295 0.1551 0.4992 -0.05423 2018 6 27 58296 0.1572 0.4986 -0.05439 2018 6 28 58297 0.1593 0.4980 -0.05448 2018 6 29 58298 0.1613 0.4974 -0.05458 2018 6 30 58299 0.1634 0.4968 -0.05475 2018 7 1 58300 0.1655 0.4961 -0.05498 2018 7 2 58301 0.1675 0.4954 -0.05531 2018 7 3 58302 0.1696 0.4946 -0.05572 2018 7 4 58303 0.1716 0.4939 -0.05622 2018 7 5 58304 0.1736 0.4930 -0.05683 2018 7 6 58305 0.1755 0.4922 -0.05752 2018 7 7 58306 0.1775 0.4913 -0.05828 2018 7 8 58307 0.1795 0.4904 -0.05906 2018 7 9 58308 0.1814 0.4895 -0.05978 2018 7 10 58309 0.1833 0.4886 -0.06038 2018 7 11 58310 0.1852 0.4876 -0.06083 2018 7 12 58311 0.1871 0.4866 -0.06120 2018 7 13 58312 0.1889 0.4855 -0.06151 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) 57925 -103.13 0.30 -12.19 0.01 57926 -103.63 0.30 -12.36 0.01 57927 -104.06 0.30 -12.59 0.01 57928 -104.27 0.30 -12.67 0.01 57929 -104.11 0.30 -12.55 0.02 57930 -103.66 0.30 -12.41 0.02 57931 -103.25 0.11 -12.42 0.02 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57925 -0.019 0.119 0.132 0.010 57926 -0.021 0.119 0.126 0.010 57927 -0.019 0.119 0.124 0.010 57928 -0.034 0.119 0.126 0.010 57929 -0.047 0.119 0.124 0.020 57930 -0.041 0.119 0.126 0.020 57931 -0.025 0.044 0.139 0.020 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).