********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 5 October 2017 Vol. XXX No. 040 ______________________________________________________________________ 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 9 29 58025 0.22551 .00009 0.30777 .00009 0.316397 0.000012 17 9 30 58026 0.22484 .00009 0.30556 .00009 0.315777 0.000013 17 10 1 58027 0.22394 .00009 0.30310 .00009 0.315121 0.000015 17 10 2 58028 0.22291 .00009 0.30068 .00009 0.314487 0.000018 17 10 3 58029 0.22217 .00009 0.29857 .00009 0.313768 0.000017 17 10 4 58030 0.22185 .00009 0.29670 .00009 0.312875 0.000018 17 10 5 58031 0.22181 .00009 0.29486 .00009 0.311823 0.000021 IERS Final Values MJD x y UT1-UTC " " s 17 8 2 57967 0.2114 0.4082 0.34642 17 8 3 57968 0.2133 0.4066 0.34628 17 8 4 57969 0.2147 0.4054 0.34620 17 8 5 57970 0.2154 0.4042 0.34614 17 8 6 57971 0.2162 0.4030 0.34605 17 8 7 57972 0.2171 0.4015 0.34590 17 8 8 57973 0.2185 0.3998 0.34563 17 8 9 57974 0.2201 0.3982 0.34526 17 8 10 57975 0.2219 0.3966 0.34477 17 8 11 57976 0.2235 0.3948 0.34417 17 8 12 57977 0.2243 0.3930 0.34350 17 8 13 57978 0.2249 0.3913 0.34282 17 8 14 57979 0.2254 0.3896 0.34219 17 8 15 57980 0.2255 0.3879 0.34165 17 8 16 57981 0.2251 0.3860 0.34122 17 8 17 57982 0.2253 0.3838 0.34091 17 8 18 57983 0.2263 0.3814 0.34071 17 8 19 57984 0.2275 0.3797 0.34055 17 8 20 57985 0.2286 0.3785 0.34029 17 8 21 57986 0.2296 0.3774 0.33993 17 8 22 57987 0.2302 0.3757 0.33948 17 8 23 57988 0.2307 0.3739 0.33897 17 8 24 57989 0.2311 0.3718 0.33842 17 8 25 57990 0.2318 0.3696 0.33789 17 8 26 57991 0.2330 0.3678 0.33743 17 8 27 57992 0.2338 0.3662 0.33706 17 8 28 57993 0.2342 0.3644 0.33678 17 8 29 57994 0.2348 0.3629 0.33657 17 8 30 57995 0.2352 0.3615 0.33644 17 8 31 57996 0.2354 0.3595 0.33637 17 9 1 57997 0.2356 0.3571 0.33631 _______________________________________________________________________ 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 = 0.1198 + 0.1313 cos A - 0.0586 sin A - 0.0295 cos C - 0.0037 sin C y = 0.3498 - 0.0471 cos A - 0.1186 sin A - 0.0037 cos C + 0.0295 sin C UT1-UTC = 0.2858 - 0.00108 (MJD - 58039) - (UT2-UT1) where A = 2*pi*(MJD-58031)/365.25 and C = 2*pi*(MJD-58031)/435. TAI-UTC(MJD 58032) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58031)**0.80 S t = 0.00025 (MJD-58031)**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 10 6 58032 0.2216 0.2933 0.31067 2017 10 7 58033 0.2213 0.2917 0.30947 2017 10 8 58034 0.2206 0.2903 0.30830 2017 10 9 58035 0.2196 0.2889 0.30725 2017 10 10 58036 0.2184 0.2875 0.30635 2017 10 11 58037 0.2172 0.2861 0.30558 2017 10 12 58038 0.2160 0.2846 0.30487 2017 10 13 58039 0.2147 0.2831 0.30416 2017 10 14 58040 0.2133 0.2817 0.30340 2017 10 15 58041 0.2119 0.2803 0.30253 2017 10 16 58042 0.2105 0.2790 0.30155 2017 10 17 58043 0.2091 0.2776 0.30048 2017 10 18 58044 0.2077 0.2763 0.29936 2017 10 19 58045 0.2062 0.2750 0.29825 2017 10 20 58046 0.2046 0.2736 0.29714 2017 10 21 58047 0.2029 0.2724 0.29608 2017 10 22 58048 0.2013 0.2711 0.29511 2017 10 23 58049 0.1997 0.2699 0.29425 2017 10 24 58050 0.1981 0.2686 0.29347 2017 10 25 58051 0.1966 0.2675 0.29274 2017 10 26 58052 0.1949 0.2663 0.29203 2017 10 27 58053 0.1933 0.2652 0.29128 2017 10 28 58054 0.1916 0.2641 0.29048 2017 10 29 58055 0.1898 0.2631 0.28956 2017 10 30 58056 0.1880 0.2621 0.28850 2017 10 31 58057 0.1862 0.2611 0.28728 2017 11 1 58058 0.1844 0.2601 0.28590 2017 11 2 58059 0.1825 0.2592 0.28439 2017 11 3 58060 0.1806 0.2583 0.28279 2017 11 4 58061 0.1787 0.2574 0.28121 2017 11 5 58062 0.1768 0.2566 0.27971 2017 11 6 58063 0.1749 0.2557 0.27836 2017 11 7 58064 0.1729 0.2549 0.27715 2017 11 8 58065 0.1710 0.2542 0.27605 2017 11 9 58066 0.1690 0.2534 0.27498 2017 11 10 58067 0.1669 0.2527 0.27389 2017 11 11 58068 0.1649 0.2520 0.27273 2017 11 12 58069 0.1629 0.2514 0.27149 2017 11 13 58070 0.1608 0.2507 0.27016 2017 11 14 58071 0.1588 0.2501 0.26877 2017 11 15 58072 0.1567 0.2496 0.26738 2017 11 16 58073 0.1546 0.2490 0.26602 2017 11 17 58074 0.1525 0.2485 0.26474 2017 11 18 58075 0.1504 0.2481 0.26355 2017 11 19 58076 0.1483 0.2476 0.26247 2017 11 20 58077 0.1462 0.2472 0.26148 2017 11 21 58078 0.1440 0.2469 0.26058 2017 11 22 58079 0.1419 0.2465 0.25972 2017 11 23 58080 0.1397 0.2462 0.25887 2017 11 24 58081 0.1376 0.2459 0.25798 2017 11 25 58082 0.1354 0.2457 0.25701 2017 11 26 58083 0.1332 0.2454 0.25593 2017 11 27 58084 0.1310 0.2453 0.25471 2017 11 28 58085 0.1288 0.2451 0.25333 2017 11 29 58086 0.1267 0.2450 0.25180 2017 11 30 58087 0.1245 0.2449 0.25016 2017 12 1 58088 0.1223 0.2448 0.24847 2017 12 2 58089 0.1201 0.2448 0.24682 2017 12 3 58090 0.1179 0.2448 0.24526 2017 12 4 58091 0.1157 0.2449 0.24385 2017 12 5 58092 0.1135 0.2449 0.24255 2017 12 6 58093 0.1112 0.2450 0.24133 2017 12 7 58094 0.1090 0.2452 0.24010 2017 12 8 58095 0.1068 0.2454 0.23882 2017 12 9 58096 0.1046 0.2456 0.23746 2017 12 10 58097 0.1024 0.2458 0.23604 2017 12 11 58098 0.1002 0.2461 0.23459 2017 12 12 58099 0.0981 0.2464 0.23315 2017 12 13 58100 0.0959 0.2467 0.23177 2017 12 14 58101 0.0937 0.2471 0.23047 2017 12 15 58102 0.0915 0.2475 0.22928 2017 12 16 58103 0.0893 0.2479 0.22821 2017 12 17 58104 0.0872 0.2484 0.22725 2017 12 18 58105 0.0850 0.2489 0.22638 2017 12 19 58106 0.0829 0.2494 0.22557 2017 12 20 58107 0.0807 0.2499 0.22478 2017 12 21 58108 0.0786 0.2505 0.22397 2017 12 22 58109 0.0765 0.2512 0.22310 2017 12 23 58110 0.0744 0.2518 0.22214 2017 12 24 58111 0.0722 0.2525 0.22104 2017 12 25 58112 0.0702 0.2532 0.21981 2017 12 26 58113 0.0681 0.2540 0.21846 2017 12 27 58114 0.0660 0.2547 0.21699 2017 12 28 58115 0.0640 0.2556 0.21545 2017 12 29 58116 0.0619 0.2564 0.21391 2017 12 30 58117 0.0599 0.2573 0.21242 2017 12 31 58118 0.0579 0.2582 0.21103 2018 1 1 58119 0.0559 0.2591 0.20976 2018 1 2 58120 0.0539 0.2601 0.20857 2018 1 3 58121 0.0519 0.2611 0.20739 2018 1 4 58122 0.0500 0.2621 0.20615 2018 1 5 58123 0.0481 0.2631 0.20481 2018 1 6 58124 0.0462 0.2642 0.20339 2018 1 7 58125 0.0443 0.2653 0.20190 2018 1 8 58126 0.0424 0.2665 0.20041 2018 1 9 58127 0.0405 0.2676 0.19897 2018 1 10 58128 0.0387 0.2688 0.19761 2018 1 11 58129 0.0369 0.2700 0.19637 2018 1 12 58130 0.0351 0.2713 0.19526 2018 1 13 58131 0.0333 0.2725 0.19426 2018 1 14 58132 0.0316 0.2738 0.19337 2018 1 15 58133 0.0298 0.2752 0.19255 2018 1 16 58134 0.0281 0.2765 0.19178 2018 1 17 58135 0.0265 0.2779 0.19100 2018 1 18 58136 0.0248 0.2793 0.19017 2018 1 19 58137 0.0232 0.2807 0.18926 2018 1 20 58138 0.0216 0.2822 0.18823 2018 1 21 58139 0.0200 0.2837 0.18706 2018 1 22 58140 0.0184 0.2852 0.18586 2018 1 23 58141 0.0169 0.2867 0.18455 2018 1 24 58142 0.0154 0.2882 0.18317 2018 1 25 58143 0.0139 0.2898 0.18176 2018 1 26 58144 0.0125 0.2914 0.18039 2018 1 27 58145 0.0111 0.2930 0.17908 2018 1 28 58146 0.0097 0.2947 0.17787 2018 1 29 58147 0.0083 0.2963 0.17672 2018 1 30 58148 0.0070 0.2980 0.17559 2018 1 31 58149 0.0057 0.2997 0.17441 2018 2 1 58150 0.0044 0.3014 0.17310 2018 2 2 58151 0.0031 0.3032 0.17167 2018 2 3 58152 0.0019 0.3049 0.17012 2018 2 4 58153 0.0007 0.3067 0.16853 2018 2 5 58154 -0.0004 0.3085 0.16695 2018 2 6 58155 -0.0015 0.3103 0.16546 2018 2 7 58156 -0.0026 0.3121 0.16407 2018 2 8 58157 -0.0037 0.3140 0.16282 2018 2 9 58158 -0.0047 0.3158 0.16170 2018 2 10 58159 -0.0057 0.3177 0.16068 2018 2 11 58160 -0.0066 0.3196 0.15974 2018 2 12 58161 -0.0076 0.3215 0.15884 2018 2 13 58162 -0.0085 0.3234 0.15794 2018 2 14 58163 -0.0093 0.3254 0.15699 2018 2 15 58164 -0.0101 0.3273 0.15595 2018 2 16 58165 -0.0109 0.3293 0.15478 2018 2 17 58166 -0.0117 0.3313 0.15347 2018 2 18 58167 -0.0124 0.3332 0.15203 2018 2 19 58168 -0.0131 0.3352 0.15047 2018 2 20 58169 -0.0137 0.3372 0.14884 2018 2 21 58170 -0.0143 0.3393 0.14719 2018 2 22 58171 -0.0149 0.3413 0.14557 2018 2 23 58172 -0.0155 0.3433 0.14403 2018 2 24 58173 -0.0160 0.3454 0.14257 2018 2 25 58174 -0.0164 0.3474 0.14119 2018 2 26 58175 -0.0169 0.3495 0.13984 2018 2 27 58176 -0.0173 0.3516 0.13846 2018 2 28 58177 -0.0176 0.3536 0.13698 2018 3 1 58178 -0.0179 0.3557 0.13534 2018 3 2 58179 -0.0182 0.3578 0.13356 2018 3 3 58180 -0.0185 0.3599 0.13168 2018 3 4 58181 -0.0187 0.3620 0.12976 2018 3 5 58182 -0.0188 0.3641 0.12790 2018 3 6 58183 -0.0190 0.3662 0.12613 2018 3 7 58184 -0.0191 0.3683 0.12449 2018 3 8 58185 -0.0191 0.3704 0.12300 2018 3 9 58186 -0.0192 0.3725 0.12163 2018 3 10 58187 -0.0192 0.3746 0.12036 2018 3 11 58188 -0.0191 0.3767 0.11916 2018 3 12 58189 -0.0190 0.3788 0.11797 2018 3 13 58190 -0.0189 0.3810 0.11674 2018 3 14 58191 -0.0187 0.3831 0.11544 2018 3 15 58192 -0.0185 0.3852 0.11402 2018 3 16 58193 -0.0183 0.3873 0.11246 2018 3 17 58194 -0.0180 0.3894 0.11075 2018 3 18 58195 -0.0177 0.3915 0.10891 2018 3 19 58196 -0.0174 0.3936 0.10698 2018 3 20 58197 -0.0170 0.3957 0.10503 2018 3 21 58198 -0.0166 0.3978 0.10312 2018 3 22 58199 -0.0161 0.3998 0.10129 2018 3 23 58200 -0.0156 0.4019 0.09957 2018 3 24 58201 -0.0151 0.4040 0.09796 2018 3 25 58202 -0.0145 0.4060 0.09641 2018 3 26 58203 -0.0139 0.4081 0.09485 2018 3 27 58204 -0.0133 0.4101 0.09323 2018 3 28 58205 -0.0126 0.4122 0.09148 2018 3 29 58206 -0.0119 0.4142 0.08959 2018 3 30 58207 -0.0111 0.4162 0.08757 2018 3 31 58208 -0.0103 0.4182 0.08548 2018 4 1 58209 -0.0095 0.4202 0.08339 2018 4 2 58210 -0.0087 0.4222 0.08136 2018 4 3 58211 -0.0078 0.4242 0.07946 2018 4 4 58212 -0.0068 0.4261 0.07768 2018 4 5 58213 -0.0059 0.4281 0.07604 2018 4 6 58214 -0.0049 0.4300 0.07450 2018 4 7 58215 -0.0039 0.4319 0.07303 2018 4 8 58216 -0.0028 0.4338 0.07158 2018 4 9 58217 -0.0017 0.4357 0.07009 2018 4 10 58218 -0.0006 0.4376 0.06851 2018 4 11 58219 0.0006 0.4395 0.06681 2018 4 12 58220 0.0018 0.4413 0.06494 2018 4 13 58221 0.0030 0.4431 0.06292 2018 4 14 58222 0.0043 0.4449 0.06075 2018 4 15 58223 0.0056 0.4467 0.05849 2018 4 16 58224 0.0069 0.4485 0.05620 2018 4 17 58225 0.0082 0.4502 0.05397 2018 4 18 58226 0.0096 0.4520 0.05188 2018 4 19 58227 0.0110 0.4537 0.04997 2018 4 20 58228 0.0125 0.4554 0.04824 2018 4 21 58229 0.0139 0.4570 0.04666 2018 4 22 58230 0.0154 0.4587 0.04516 2018 4 23 58231 0.0170 0.4603 0.04369 2018 4 24 58232 0.0185 0.4619 0.04218 2018 4 25 58233 0.0201 0.4635 0.04061 2018 4 26 58234 0.0217 0.4651 0.03898 2018 4 27 58235 0.0234 0.4666 0.03732 2018 4 28 58236 0.0250 0.4681 0.03569 2018 4 29 58237 0.0267 0.4696 0.03413 2018 4 30 58238 0.0284 0.4711 0.03269 2018 5 1 58239 0.0302 0.4725 0.03140 2018 5 2 58240 0.0320 0.4740 0.03026 2018 5 3 58241 0.0337 0.4753 0.02927 2018 5 4 58242 0.0356 0.4767 0.02839 2018 5 5 58243 0.0374 0.4781 0.02758 2018 5 6 58244 0.0393 0.4794 0.02680 2018 5 7 58245 0.0412 0.4807 0.02601 2018 5 8 58246 0.0431 0.4819 0.02518 2018 5 9 58247 0.0450 0.4831 0.02426 2018 5 10 58248 0.0469 0.4843 0.02325 2018 5 11 58249 0.0489 0.4855 0.02212 2018 5 12 58250 0.0509 0.4867 0.02086 2018 5 13 58251 0.0529 0.4878 0.01949 2018 5 14 58252 0.0549 0.4889 0.01807 2018 5 15 58253 0.0570 0.4899 0.01669 2018 5 16 58254 0.0591 0.4910 0.01549 2018 5 17 58255 0.0611 0.4920 0.01447 2018 5 18 58256 0.0632 0.4929 0.01360 2018 5 19 58257 0.0654 0.4939 0.01278 2018 5 20 58258 0.0675 0.4948 0.01196 2018 5 21 58259 0.0696 0.4957 0.01111 2018 5 22 58260 0.0718 0.4965 0.01023 2018 5 23 58261 0.0740 0.4973 0.00924 2018 5 24 58262 0.0762 0.4981 0.00823 2018 5 25 58263 0.0784 0.4988 0.00726 2018 5 26 58264 0.0806 0.4996 0.00637 2018 5 27 58265 0.0828 0.5003 0.00555 2018 5 28 58266 0.0850 0.5009 0.00487 2018 5 29 58267 0.0873 0.5015 0.00437 2018 5 30 58268 0.0895 0.5021 0.00404 2018 5 31 58269 0.0918 0.5027 0.00380 2018 6 1 58270 0.0941 0.5032 0.00361 2018 6 2 58271 0.0963 0.5037 0.00340 2018 6 3 58272 0.0986 0.5042 0.00320 2018 6 4 58273 0.1009 0.5046 0.00296 2018 6 5 58274 0.1032 0.5050 0.00261 2018 6 6 58275 0.1055 0.5053 0.00210 2018 6 7 58276 0.1078 0.5057 0.00142 2018 6 8 58277 0.1102 0.5059 0.00051 2018 6 9 58278 0.1125 0.5062 -0.00053 2018 6 10 58279 0.1148 0.5064 -0.00165 2018 6 11 58280 0.1171 0.5066 -0.00273 2018 6 12 58281 0.1195 0.5068 -0.00373 2018 6 13 58282 0.1218 0.5069 -0.00458 2018 6 14 58283 0.1241 0.5070 -0.00526 2018 6 15 58284 0.1264 0.5070 -0.00580 2018 6 16 58285 0.1288 0.5071 -0.00629 2018 6 17 58286 0.1311 0.5070 -0.00680 2018 6 18 58287 0.1334 0.5070 -0.00738 2018 6 19 58288 0.1358 0.5069 -0.00806 2018 6 20 58289 0.1381 0.5068 -0.00876 2018 6 21 58290 0.1404 0.5067 -0.00945 2018 6 22 58291 0.1427 0.5065 -0.01006 2018 6 23 58292 0.1450 0.5063 -0.01057 2018 6 24 58293 0.1473 0.5060 -0.01092 2018 6 25 58294 0.1496 0.5057 -0.01112 2018 6 26 58295 0.1519 0.5054 -0.01118 2018 6 27 58296 0.1542 0.5051 -0.01114 2018 6 28 58297 0.1564 0.5047 -0.01100 2018 6 29 58298 0.1587 0.5043 -0.01083 2018 6 30 58299 0.1610 0.5038 -0.01065 2018 7 1 58300 0.1632 0.5033 -0.01054 2018 7 2 58301 0.1655 0.5028 -0.01051 2018 7 3 58302 0.1677 0.5023 -0.01061 2018 7 4 58303 0.1699 0.5017 -0.01084 2018 7 5 58304 0.1721 0.5011 -0.01119 2018 7 6 58305 0.1743 0.5004 -0.01159 2018 7 7 58306 0.1765 0.4998 -0.01202 2018 7 8 58307 0.1786 0.4990 -0.01249 2018 7 9 58308 0.1808 0.4983 -0.01295 2018 7 10 58309 0.1829 0.4975 -0.01339 2018 7 11 58310 0.1850 0.4967 -0.01376 2018 7 12 58311 0.1871 0.4959 -0.01404 2018 7 13 58312 0.1892 0.4950 -0.01428 2018 7 14 58313 0.1913 0.4941 -0.01457 2018 7 15 58314 0.1933 0.4932 -0.01497 2018 7 16 58315 0.1954 0.4923 -0.01550 2018 7 17 58316 0.1974 0.4913 -0.01617 2018 7 18 58317 0.1994 0.4903 -0.01690 2018 7 19 58318 0.2013 0.4892 -0.01759 2018 7 20 58319 0.2033 0.4882 -0.01817 2018 7 21 58320 0.2052 0.4871 -0.01864 2018 7 22 58321 0.2071 0.4860 -0.01897 2018 7 23 58322 0.2090 0.4848 -0.01911 2018 7 24 58323 0.2109 0.4836 -0.01911 2018 7 25 58324 0.2127 0.4824 -0.01902 2018 7 26 58325 0.2146 0.4812 -0.01886 2018 7 27 58326 0.2164 0.4799 -0.01867 2018 7 28 58327 0.2181 0.4786 -0.01855 2018 7 29 58328 0.2199 0.4773 -0.01849 2018 7 30 58329 0.2216 0.4760 -0.01853 2018 7 31 58330 0.2233 0.4746 -0.01870 2018 8 1 58331 0.2250 0.4732 -0.01898 2018 8 2 58332 0.2266 0.4718 -0.01937 2018 8 3 58333 0.2283 0.4704 -0.01985 2018 8 4 58334 0.2298 0.4689 -0.02035 2018 8 5 58335 0.2314 0.4674 -0.02083 2018 8 6 58336 0.2329 0.4659 -0.02123 2018 8 7 58337 0.2345 0.4644 -0.02156 2018 8 8 58338 0.2359 0.4629 -0.02182 2018 8 9 58339 0.2374 0.4613 -0.02210 2018 8 10 58340 0.2388 0.4597 -0.02245 2018 8 11 58341 0.2402 0.4581 -0.02291 2018 8 12 58342 0.2416 0.4565 -0.02347 2018 8 13 58343 0.2429 0.4548 -0.02420 2018 8 14 58344 0.2442 0.4532 -0.02509 2018 8 15 58345 0.2455 0.4515 -0.02604 2018 8 16 58346 0.2467 0.4498 -0.02695 2018 8 17 58347 0.2479 0.4480 -0.02775 2018 8 18 58348 0.2491 0.4463 -0.02839 2018 8 19 58349 0.2502 0.4445 -0.02886 2018 8 20 58350 0.2513 0.4428 -0.02923 2018 8 21 58351 0.2524 0.4410 -0.02956 2018 8 22 58352 0.2535 0.4392 -0.02987 2018 8 23 58353 0.2545 0.4374 -0.03017 2018 8 24 58354 0.2554 0.4355 -0.03056 2018 8 25 58355 0.2564 0.4337 -0.03106 2018 8 26 58356 0.2573 0.4318 -0.03165 2018 8 27 58357 0.2582 0.4299 -0.03234 2018 8 28 58358 0.2590 0.4281 -0.03315 2018 8 29 58359 0.2598 0.4262 -0.03405 2018 8 30 58360 0.2606 0.4243 -0.03505 2018 8 31 58361 0.2613 0.4223 -0.03609 2018 9 1 58362 0.2620 0.4204 -0.03709 2018 9 2 58363 0.2627 0.4185 -0.03801 2018 9 3 58364 0.2633 0.4165 -0.03881 2018 9 4 58365 0.2639 0.4146 -0.03951 2018 9 5 58366 0.2644 0.4126 -0.04011 2018 9 6 58367 0.2650 0.4106 -0.04071 2018 9 7 58368 0.2654 0.4086 -0.04137 2018 9 8 58369 0.2659 0.4067 -0.04218 2018 9 9 58370 0.2663 0.4047 -0.04319 2018 9 10 58371 0.2667 0.4027 -0.04444 2018 9 11 58372 0.2670 0.4007 -0.04587 2018 9 12 58373 0.2673 0.3987 -0.04735 2018 9 13 58374 0.2676 0.3966 -0.04878 2018 9 14 58375 0.2678 0.3946 -0.05010 2018 9 15 58376 0.2680 0.3926 -0.05126 2018 9 16 58377 0.2681 0.3906 -0.05228 2018 9 17 58378 0.2683 0.3886 -0.05319 2018 9 18 58379 0.2683 0.3866 -0.05405 2018 9 19 58380 0.2684 0.3845 -0.05490 2018 9 20 58381 0.2684 0.3825 -0.05570 2018 9 21 58382 0.2684 0.3805 -0.05653 2018 9 22 58383 0.2683 0.3785 -0.05745 2018 9 23 58384 0.2682 0.3765 -0.05849 2018 9 24 58385 0.2681 0.3744 -0.05965 2018 9 25 58386 0.2679 0.3724 -0.06092 2018 9 26 58387 0.2677 0.3704 -0.06228 2018 9 27 58388 0.2674 0.3684 -0.06368 2018 9 28 58389 0.2672 0.3664 -0.06501 2018 9 29 58390 0.2668 0.3644 -0.06624 2018 9 30 58391 0.2665 0.3624 -0.06739 2018 10 1 58392 0.2661 0.3604 -0.06848 2018 10 2 58393 0.2657 0.3585 -0.06952 2018 10 3 58394 0.2652 0.3565 -0.07059 2018 10 4 58395 0.2647 0.3545 -0.07178 2018 10 5 58396 0.2642 0.3526 -0.07307 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) 58009 -111.61 0.30 -12.20 0.03 58010 -111.72 0.30 -12.24 0.03 58011 -111.64 0.30 -12.28 0.03 58012 -111.35 0.30 -12.25 0.05 58013 -110.95 0.30 -12.10 0.03 58014 -110.60 0.30 -11.87 0.03 58015 -110.40 0.30 -11.69 0.15 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 57967 -109.0 -12.5 57968 -109.2 -12.4 57969 -109.3 -12.3 57970 -109.5 -12.3 57971 -109.6 -12.4 57972 -109.6 -12.5 57973 -109.6 -12.5 57974 -109.6 -12.4 57975 -109.6 -12.3 57976 -109.7 -12.2 57977 -109.8 -12.2 57978 -109.8 -12.2 57979 -109.9 -12.1 57980 -110.2 -12.1 57981 -110.7 -12.2 57982 -111.1 -12.5 57983 -111.2 -12.7 57984 -111.0 -12.7 57985 -110.7 -12.5 57986 -110.3 -12.3 57987 -109.9 -12.1 57988 -109.9 -12.2 57989 -110.1 -12.3 57990 -110.6 -12.3 57991 -111.1 -12.2 57992 -111.3 -12.1 57993 -111.3 -12.2 57994 -111.1 -12.3 57995 -110.9 -12.3 57996 -110.8 -12.2 57997 -110.8 -12.1 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58009 0.174 0.119 -0.013 0.030 58010 0.208 0.119 -0.004 0.030 58011 0.238 0.119 0.046 0.030 58012 0.248 0.119 0.092 0.050 58013 0.244 0.119 0.117 0.030 58014 0.233 0.119 0.145 0.030 58015 0.223 0.119 0.169 0.150 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 57967 0.09 0.09 57968 0.09 0.10 57969 0.11 0.14 57970 0.08 0.17 57971 0.07 0.15 57972 0.08 0.08 57973 0.07 0.05 57974 0.09 0.06 57975 0.16 0.08 57976 0.20 0.15 57977 0.18 0.15 57978 0.16 0.12 57979 0.14 0.17 57980 0.13 0.15 57981 0.12 0.16 57982 0.11 0.11 57983 0.12 0.14 57984 0.14 0.18 57985 0.14 0.18 57986 0.17 0.12 57987 0.22 0.20 57988 0.17 0.15 57989 0.15 0.13 57990 0.10 0.10 57991 0.07 0.09 57992 0.08 0.16 57993 0.07 0.14 57994 0.08 0.14 57995 0.09 0.16 57996 0.10 0.19 57997 0.13 0.22 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).