********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 7 December 2017 Vol. XXX No. 049 ______________________________________________________________________ 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 = +0.2 seconds beginning 30 Nov 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 12 1 58088 0.12409 .00009 0.23675 .00009 0.248488 0.000009 17 12 2 58089 0.12169 .00009 0.23628 .00009 0.246963 0.000010 17 12 3 58090 0.11933 .00009 0.23563 .00009 0.245551 0.000010 17 12 4 58091 0.11701 .00009 0.23484 .00009 0.244263 0.000003 17 12 5 58092 0.11472 .00009 0.23403 .00009 0.243056 0.000003 17 12 6 58093 0.11235 .00009 0.23359 .00009 0.241865 0.000003 17 12 7 58094 0.10960 .00009 0.23356 .00009 0.240646 0.000003 IERS Final Values MJD x y UT1-UTC " " s 17 10 2 58028 0.2228 0.3006 0.31454 17 10 3 58029 0.2221 0.2984 0.31375 17 10 4 58030 0.2218 0.2967 0.31286 17 10 5 58031 0.2219 0.2948 0.31183 17 10 6 58032 0.2217 0.2938 0.31071 17 10 7 58033 0.2202 0.2930 0.30955 17 10 8 58034 0.2184 0.2921 0.30843 17 10 9 58035 0.2162 0.2909 0.30740 17 10 10 58036 0.2141 0.2891 0.30650 17 10 11 58037 0.2122 0.2874 0.30570 17 10 12 58038 0.2102 0.2854 0.30495 17 10 13 58039 0.2087 0.2834 0.30419 17 10 14 58040 0.2072 0.2815 0.30334 17 10 15 58041 0.2057 0.2797 0.30235 17 10 16 58042 0.2048 0.2781 0.30121 17 10 17 58043 0.2039 0.2769 0.29994 17 10 18 58044 0.2026 0.2754 0.29858 17 10 19 58045 0.2012 0.2737 0.29719 17 10 20 58046 0.1999 0.2721 0.29582 17 10 21 58047 0.1987 0.2706 0.29453 17 10 22 58048 0.1973 0.2696 0.29334 17 10 23 58049 0.1960 0.2684 0.29227 17 10 24 58050 0.1946 0.2669 0.29131 17 10 25 58051 0.1928 0.2656 0.29043 17 10 26 58052 0.1905 0.2640 0.28960 17 10 27 58053 0.1886 0.2625 0.28879 17 10 28 58054 0.1866 0.2612 0.28795 17 10 29 58055 0.1846 0.2599 0.28702 17 10 30 58056 0.1831 0.2588 0.28595 17 10 31 58057 0.1818 0.2578 0.28475 17 11 1 58058 0.1803 0.2569 0.28343 _______________________________________________________________________ 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 = 0.1105 + 0.0319 cos A - 0.1299 sin A - 0.0321 cos C - 0.0017 sin C y = 0.3472 - 0.1177 cos A - 0.0336 sin A - 0.0017 cos C + 0.0321 sin C UT1-UTC = 0.2360 - 0.00103 (MJD - 58102) - (UT2-UT1) where A = 2*pi*(MJD-58094)/365.25 and C = 2*pi*(MJD-58094)/435. TAI-UTC(MJD 58095) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58094)**0.80 S t = 0.00025 (MJD-58094)**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 12 8 58095 0.1068 0.2335 0.23938 2017 12 9 58096 0.1040 0.2336 0.23805 2017 12 10 58097 0.1015 0.2336 0.23669 2017 12 11 58098 0.0991 0.2336 0.23533 2017 12 12 58099 0.0967 0.2338 0.23401 2017 12 13 58100 0.0945 0.2340 0.23279 2017 12 14 58101 0.0923 0.2343 0.23169 2017 12 15 58102 0.0901 0.2346 0.23072 2017 12 16 58103 0.0878 0.2350 0.22987 2017 12 17 58104 0.0856 0.2355 0.22911 2017 12 18 58105 0.0834 0.2360 0.22840 2017 12 19 58106 0.0813 0.2365 0.22773 2017 12 20 58107 0.0791 0.2371 0.22706 2017 12 21 58108 0.0770 0.2377 0.22638 2017 12 22 58109 0.0748 0.2383 0.22567 2017 12 23 58110 0.0727 0.2389 0.22489 2017 12 24 58111 0.0706 0.2395 0.22401 2017 12 25 58112 0.0684 0.2402 0.22303 2017 12 26 58113 0.0663 0.2409 0.22196 2017 12 27 58114 0.0642 0.2417 0.22079 2017 12 28 58115 0.0621 0.2426 0.21957 2017 12 29 58116 0.0601 0.2434 0.21835 2017 12 30 58117 0.0580 0.2443 0.21718 2017 12 31 58118 0.0559 0.2452 0.21611 2018 1 1 58119 0.0539 0.2461 0.21514 2018 1 2 58120 0.0519 0.2471 0.21425 2018 1 3 58121 0.0500 0.2481 0.21338 2018 1 4 58122 0.0480 0.2492 0.21246 2018 1 5 58123 0.0461 0.2503 0.21146 2018 1 6 58124 0.0442 0.2514 0.21038 2018 1 7 58125 0.0423 0.2525 0.20924 2018 1 8 58126 0.0404 0.2537 0.20811 2018 1 9 58127 0.0386 0.2549 0.20703 2018 1 10 58128 0.0367 0.2561 0.20603 2018 1 11 58129 0.0349 0.2574 0.20515 2018 1 12 58130 0.0331 0.2587 0.20438 2018 1 13 58131 0.0314 0.2600 0.20374 2018 1 14 58132 0.0296 0.2613 0.20320 2018 1 15 58133 0.0279 0.2627 0.20273 2018 1 16 58134 0.0262 0.2641 0.20232 2018 1 17 58135 0.0245 0.2655 0.20191 2018 1 18 58136 0.0229 0.2669 0.20146 2018 1 19 58137 0.0212 0.2684 0.20093 2018 1 20 58138 0.0196 0.2699 0.20029 2018 1 21 58139 0.0181 0.2714 0.19952 2018 1 22 58140 0.0165 0.2730 0.19864 2018 1 23 58141 0.0150 0.2746 0.19765 2018 1 24 58142 0.0135 0.2762 0.19658 2018 1 25 58143 0.0121 0.2778 0.19550 2018 1 26 58144 0.0106 0.2794 0.19445 2018 1 27 58145 0.0092 0.2811 0.19346 2018 1 28 58146 0.0078 0.2828 0.19257 2018 1 29 58147 0.0065 0.2845 0.19173 2018 1 30 58148 0.0052 0.2862 0.19092 2018 1 31 58149 0.0039 0.2880 0.19004 2018 2 1 58150 0.0026 0.2898 0.18905 2018 2 2 58151 0.0014 0.2915 0.18793 2018 2 3 58152 0.0002 0.2934 0.18670 2018 2 4 58153 -0.0010 0.2952 0.18542 2018 2 5 58154 -0.0021 0.2970 0.18415 2018 2 6 58155 -0.0032 0.2989 0.18296 2018 2 7 58156 -0.0043 0.3008 0.18189 2018 2 8 58157 -0.0053 0.3027 0.18095 2018 2 9 58158 -0.0063 0.3046 0.18014 2018 2 10 58159 -0.0073 0.3065 0.17943 2018 2 11 58160 -0.0082 0.3085 0.17881 2018 2 12 58161 -0.0091 0.3105 0.17822 2018 2 13 58162 -0.0099 0.3124 0.17763 2018 2 14 58163 -0.0108 0.3144 0.17698 2018 2 15 58164 -0.0116 0.3164 0.17624 2018 2 16 58165 -0.0123 0.3184 0.17536 2018 2 17 58166 -0.0131 0.3205 0.17433 2018 2 18 58167 -0.0137 0.3225 0.17315 2018 2 19 58168 -0.0144 0.3246 0.17185 2018 2 20 58169 -0.0150 0.3266 0.17046 2018 2 21 58170 -0.0156 0.3287 0.16905 2018 2 22 58171 -0.0161 0.3308 0.16765 2018 2 23 58172 -0.0167 0.3329 0.16632 2018 2 24 58173 -0.0171 0.3350 0.16506 2018 2 25 58174 -0.0176 0.3371 0.16388 2018 2 26 58175 -0.0180 0.3392 0.16272 2018 2 27 58176 -0.0183 0.3414 0.16152 2018 2 28 58177 -0.0187 0.3435 0.16021 2018 3 1 58178 -0.0189 0.3456 0.15875 2018 3 2 58179 -0.0192 0.3478 0.15714 2018 3 3 58180 -0.0194 0.3499 0.15542 2018 3 4 58181 -0.0196 0.3521 0.15366 2018 3 5 58182 -0.0197 0.3542 0.15194 2018 3 6 58183 -0.0198 0.3564 0.15031 2018 3 7 58184 -0.0199 0.3586 0.14881 2018 3 8 58185 -0.0199 0.3607 0.14745 2018 3 9 58186 -0.0199 0.3629 0.14622 2018 3 10 58187 -0.0198 0.3650 0.14508 2018 3 11 58188 -0.0198 0.3672 0.14401 2018 3 12 58189 -0.0196 0.3694 0.14294 2018 3 13 58190 -0.0195 0.3715 0.14184 2018 3 14 58191 -0.0193 0.3737 0.14067 2018 3 15 58192 -0.0190 0.3759 0.13937 2018 3 16 58193 -0.0188 0.3780 0.13794 2018 3 17 58194 -0.0184 0.3802 0.13636 2018 3 18 58195 -0.0181 0.3823 0.13464 2018 3 19 58196 -0.0177 0.3845 0.13283 2018 3 20 58197 -0.0173 0.3866 0.13099 2018 3 21 58198 -0.0168 0.3888 0.12918 2018 3 22 58199 -0.0163 0.3909 0.12746 2018 3 23 58200 -0.0158 0.3930 0.12584 2018 3 24 58201 -0.0152 0.3951 0.12431 2018 3 25 58202 -0.0146 0.3972 0.12284 2018 3 26 58203 -0.0139 0.3993 0.12146 2018 3 27 58204 -0.0132 0.4014 0.12002 2018 3 28 58205 -0.0125 0.4035 0.11845 2018 3 29 58206 -0.0118 0.4056 0.11674 2018 3 30 58207 -0.0110 0.4076 0.11490 2018 3 31 58208 -0.0101 0.4097 0.11300 2018 4 1 58209 -0.0093 0.4117 0.11111 2018 4 2 58210 -0.0084 0.4138 0.10929 2018 4 3 58211 -0.0074 0.4158 0.10761 2018 4 4 58212 -0.0065 0.4178 0.10608 2018 4 5 58213 -0.0054 0.4198 0.10469 2018 4 6 58214 -0.0044 0.4217 0.10343 2018 4 7 58215 -0.0033 0.4237 0.10227 2018 4 8 58216 -0.0022 0.4256 0.10115 2018 4 9 58217 -0.0011 0.4276 0.10003 2018 4 10 58218 0.0001 0.4295 0.09886 2018 4 11 58219 0.0013 0.4314 0.09760 2018 4 12 58220 0.0025 0.4333 0.09621 2018 4 13 58221 0.0038 0.4351 0.09468 2018 4 14 58222 0.0051 0.4370 0.09301 2018 4 15 58223 0.0065 0.4388 0.09124 2018 4 16 58224 0.0078 0.4406 0.08941 2018 4 17 58225 0.0092 0.4424 0.08761 2018 4 18 58226 0.0107 0.4441 0.08590 2018 4 19 58227 0.0121 0.4459 0.08432 2018 4 20 58228 0.0136 0.4476 0.08288 2018 4 21 58229 0.0151 0.4493 0.08154 2018 4 22 58230 0.0167 0.4510 0.08024 2018 4 23 58231 0.0183 0.4526 0.07892 2018 4 24 58232 0.0199 0.4543 0.07751 2018 4 25 58233 0.0215 0.4559 0.07599 2018 4 26 58234 0.0232 0.4575 0.07437 2018 4 27 58235 0.0248 0.4590 0.07267 2018 4 28 58236 0.0266 0.4606 0.07096 2018 4 29 58237 0.0283 0.4621 0.06931 2018 4 30 58238 0.0301 0.4636 0.06777 2018 5 1 58239 0.0319 0.4650 0.06638 2018 5 2 58240 0.0337 0.4665 0.06515 2018 5 3 58241 0.0355 0.4679 0.06407 2018 5 4 58242 0.0374 0.4692 0.06311 2018 5 5 58243 0.0393 0.4706 0.06222 2018 5 6 58244 0.0412 0.4719 0.06136 2018 5 7 58245 0.0431 0.4732 0.06049 2018 5 8 58246 0.0451 0.4745 0.05954 2018 5 9 58247 0.0471 0.4757 0.05850 2018 5 10 58248 0.0491 0.4769 0.05734 2018 5 11 58249 0.0511 0.4781 0.05605 2018 5 12 58250 0.0531 0.4793 0.05464 2018 5 13 58251 0.0552 0.4804 0.05316 2018 5 14 58252 0.0572 0.4815 0.05167 2018 5 15 58253 0.0593 0.4825 0.05025 2018 5 16 58254 0.0614 0.4836 0.04894 2018 5 17 58255 0.0636 0.4846 0.04779 2018 5 18 58256 0.0657 0.4855 0.04678 2018 5 19 58257 0.0679 0.4865 0.04584 2018 5 20 58258 0.0701 0.4874 0.04492 2018 5 21 58259 0.0722 0.4883 0.04393 2018 5 22 58260 0.0745 0.4891 0.04286 2018 5 23 58261 0.0767 0.4899 0.04170 2018 5 24 58262 0.0789 0.4907 0.04048 2018 5 25 58263 0.0811 0.4914 0.03926 2018 5 26 58264 0.0834 0.4921 0.03808 2018 5 27 58265 0.0857 0.4928 0.03702 2018 5 28 58266 0.0879 0.4934 0.03609 2018 5 29 58267 0.0902 0.4941 0.03533 2018 5 30 58268 0.0925 0.4946 0.03472 2018 5 31 58269 0.0948 0.4952 0.03424 2018 6 1 58270 0.0972 0.4957 0.03387 2018 6 2 58271 0.0995 0.4961 0.03355 2018 6 3 58272 0.1018 0.4966 0.03324 2018 6 4 58273 0.1041 0.4970 0.03289 2018 6 5 58274 0.1065 0.4974 0.03246 2018 6 6 58275 0.1088 0.4977 0.03194 2018 6 7 58276 0.1112 0.4980 0.03130 2018 6 8 58277 0.1135 0.4983 0.03055 2018 6 9 58278 0.1159 0.4985 0.02973 2018 6 10 58279 0.1182 0.4987 0.02886 2018 6 11 58280 0.1206 0.4988 0.02800 2018 6 12 58281 0.1230 0.4990 0.02724 2018 6 13 58282 0.1253 0.4991 0.02659 2018 6 14 58283 0.1277 0.4991 0.02606 2018 6 15 58284 0.1301 0.4991 0.02561 2018 6 16 58285 0.1324 0.4991 0.02516 2018 6 17 58286 0.1348 0.4991 0.02464 2018 6 18 58287 0.1372 0.4990 0.02400 2018 6 19 58288 0.1395 0.4988 0.02325 2018 6 20 58289 0.1419 0.4987 0.02243 2018 6 21 58290 0.1442 0.4985 0.02160 2018 6 22 58291 0.1466 0.4983 0.02081 2018 6 23 58292 0.1489 0.4980 0.02012 2018 6 24 58293 0.1512 0.4977 0.01956 2018 6 25 58294 0.1536 0.4974 0.01913 2018 6 26 58295 0.1559 0.4970 0.01882 2018 6 27 58296 0.1582 0.4966 0.01860 2018 6 28 58297 0.1605 0.4962 0.01845 2018 6 29 58298 0.1628 0.4957 0.01831 2018 6 30 58299 0.1651 0.4952 0.01814 2018 7 1 58300 0.1673 0.4947 0.01790 2018 7 2 58301 0.1696 0.4941 0.01758 2018 7 3 58302 0.1719 0.4935 0.01715 2018 7 4 58303 0.1741 0.4929 0.01661 2018 7 5 58304 0.1763 0.4922 0.01599 2018 7 6 58305 0.1785 0.4915 0.01529 2018 7 7 58306 0.1807 0.4908 0.01455 2018 7 8 58307 0.1829 0.4900 0.01381 2018 7 9 58308 0.1851 0.4892 0.01310 2018 7 10 58309 0.1873 0.4884 0.01251 2018 7 11 58310 0.1894 0.4875 0.01206 2018 7 12 58311 0.1915 0.4866 0.01172 2018 7 13 58312 0.1936 0.4857 0.01142 2018 7 14 58313 0.1957 0.4847 0.01103 2018 7 15 58314 0.1978 0.4837 0.01048 2018 7 16 58315 0.1998 0.4827 0.00979 2018 7 17 58316 0.2019 0.4816 0.00902 2018 7 18 58317 0.2039 0.4806 0.00821 2018 7 19 58318 0.2059 0.4794 0.00742 2018 7 20 58319 0.2078 0.4783 0.00673 2018 7 21 58320 0.2098 0.4771 0.00619 2018 7 22 58321 0.2117 0.4759 0.00584 2018 7 23 58322 0.2136 0.4747 0.00569 2018 7 24 58323 0.2155 0.4735 0.00569 2018 7 25 58324 0.2174 0.4722 0.00570 2018 7 26 58325 0.2192 0.4709 0.00573 2018 7 27 58326 0.2210 0.4695 0.00582 2018 7 28 58327 0.2228 0.4682 0.00595 2018 7 29 58328 0.2245 0.4668 0.00603 2018 7 30 58329 0.2263 0.4653 0.00597 2018 7 31 58330 0.2280 0.4639 0.00577 2018 8 1 58331 0.2297 0.4624 0.00546 2018 8 2 58332 0.2313 0.4609 0.00506 2018 8 3 58333 0.2329 0.4594 0.00455 2018 8 4 58334 0.2345 0.4579 0.00396 2018 8 5 58335 0.2361 0.4563 0.00328 2018 8 6 58336 0.2377 0.4547 0.00266 2018 8 7 58337 0.2392 0.4531 0.00211 2018 8 8 58338 0.2407 0.4515 0.00163 2018 8 9 58339 0.2421 0.4498 0.00121 2018 8 10 58340 0.2435 0.4481 0.00077 2018 8 11 58341 0.2449 0.4464 0.00025 2018 8 12 58342 0.2463 0.4447 -0.00053 2018 8 13 58343 0.2476 0.4430 -0.00152 2018 8 14 58344 0.2489 0.4412 -0.00262 2018 8 15 58345 0.2502 0.4394 -0.00369 2018 8 16 58346 0.2514 0.4376 -0.00464 2018 8 17 58347 0.2526 0.4358 -0.00543 2018 8 18 58348 0.2538 0.4340 -0.00604 2018 8 19 58349 0.2549 0.4321 -0.00642 2018 8 20 58350 0.2560 0.4303 -0.00655 2018 8 21 58351 0.2571 0.4284 -0.00653 2018 8 22 58352 0.2581 0.4265 -0.00651 2018 8 23 58353 0.2591 0.4246 -0.00649 2018 8 24 58354 0.2601 0.4227 -0.00651 2018 8 25 58355 0.2610 0.4207 -0.00659 2018 8 26 58356 0.2619 0.4188 -0.00671 2018 8 27 58357 0.2628 0.4168 -0.00699 2018 8 28 58358 0.2636 0.4148 -0.00739 2018 8 29 58359 0.2644 0.4128 -0.00795 2018 8 30 58360 0.2652 0.4108 -0.00863 2018 8 31 58361 0.2659 0.4088 -0.00932 2018 9 1 58362 0.2666 0.4068 -0.01002 2018 9 2 58363 0.2672 0.4047 -0.01068 2018 9 3 58364 0.2678 0.4027 -0.01125 2018 9 4 58365 0.2684 0.4006 -0.01173 2018 9 5 58366 0.2690 0.3986 -0.01221 2018 9 6 58367 0.2695 0.3965 -0.01272 2018 9 7 58368 0.2699 0.3944 -0.01332 2018 9 8 58369 0.2704 0.3924 -0.01416 2018 9 9 58370 0.2708 0.3903 -0.01515 2018 9 10 58371 0.2711 0.3882 -0.01628 2018 9 11 58372 0.2714 0.3861 -0.01750 2018 9 12 58373 0.2717 0.3840 -0.01867 2018 9 13 58374 0.2720 0.3819 -0.01974 2018 9 14 58375 0.2722 0.3798 -0.02067 2018 9 15 58376 0.2723 0.3776 -0.02144 2018 9 16 58377 0.2725 0.3755 -0.02212 2018 9 17 58378 0.2726 0.3734 -0.02273 2018 9 18 58379 0.2726 0.3713 -0.02327 2018 9 19 58380 0.2726 0.3692 -0.02373 2018 9 20 58381 0.2726 0.3671 -0.02419 2018 9 21 58382 0.2726 0.3650 -0.02471 2018 9 22 58383 0.2725 0.3628 -0.02536 2018 9 23 58384 0.2724 0.3607 -0.02616 2018 9 24 58385 0.2722 0.3586 -0.02708 2018 9 25 58386 0.2720 0.3565 -0.02807 2018 9 26 58387 0.2718 0.3544 -0.02918 2018 9 27 58388 0.2715 0.3523 -0.03030 2018 9 28 58389 0.2712 0.3502 -0.03137 2018 9 29 58390 0.2708 0.3481 -0.03235 2018 9 30 58391 0.2704 0.3461 -0.03327 2018 10 1 58392 0.2700 0.3440 -0.03411 2018 10 2 58393 0.2696 0.3419 -0.03484 2018 10 3 58394 0.2691 0.3399 -0.03556 2018 10 4 58395 0.2685 0.3378 -0.03638 2018 10 5 58396 0.2680 0.3358 -0.03739 2018 10 6 58397 0.2674 0.3337 -0.03865 2018 10 7 58398 0.2668 0.3317 -0.04007 2018 10 8 58399 0.2661 0.3297 -0.04164 2018 10 9 58400 0.2654 0.3277 -0.04330 2018 10 10 58401 0.2646 0.3257 -0.04495 2018 10 11 58402 0.2639 0.3237 -0.04654 2018 10 12 58403 0.2631 0.3217 -0.04808 2018 10 13 58404 0.2622 0.3198 -0.04949 2018 10 14 58405 0.2614 0.3178 -0.05079 2018 10 15 58406 0.2605 0.3159 -0.05197 2018 10 16 58407 0.2595 0.3140 -0.05308 2018 10 17 58408 0.2585 0.3121 -0.05417 2018 10 18 58409 0.2575 0.3102 -0.05528 2018 10 19 58410 0.2565 0.3083 -0.05643 2018 10 20 58411 0.2554 0.3065 -0.05768 2018 10 21 58412 0.2543 0.3047 -0.05902 2018 10 22 58413 0.2532 0.3028 -0.06049 2018 10 23 58414 0.2521 0.3010 -0.06206 2018 10 24 58415 0.2509 0.2993 -0.06365 2018 10 25 58416 0.2496 0.2975 -0.06522 2018 10 26 58417 0.2484 0.2957 -0.06671 2018 10 27 58418 0.2471 0.2940 -0.06809 2018 10 28 58419 0.2458 0.2923 -0.06933 2018 10 29 58420 0.2445 0.2906 -0.07047 2018 10 30 58421 0.2431 0.2890 -0.07156 2018 10 31 58422 0.2417 0.2873 -0.07270 2018 11 1 58423 0.2403 0.2857 -0.07393 2018 11 2 58424 0.2389 0.2841 -0.07532 2018 11 3 58425 0.2374 0.2825 -0.07687 2018 11 4 58426 0.2359 0.2810 -0.07860 2018 11 5 58427 0.2344 0.2795 -0.08041 2018 11 6 58428 0.2328 0.2779 -0.08222 2018 11 7 58429 0.2312 0.2765 -0.08397 2018 11 8 58430 0.2296 0.2750 -0.08556 2018 11 9 58431 0.2280 0.2736 -0.08694 2018 11 10 58432 0.2264 0.2722 -0.08811 2018 11 11 58433 0.2247 0.2708 -0.08917 2018 11 12 58434 0.2230 0.2694 -0.09016 2018 11 13 58435 0.2213 0.2681 -0.09118 2018 11 14 58436 0.2196 0.2668 -0.09226 2018 11 15 58437 0.2178 0.2655 -0.09340 2018 11 16 58438 0.2160 0.2643 -0.09463 2018 11 17 58439 0.2143 0.2631 -0.09599 2018 11 18 58440 0.2124 0.2619 -0.09746 2018 11 19 58441 0.2106 0.2607 -0.09904 2018 11 20 58442 0.2088 0.2596 -0.10074 2018 11 21 58443 0.2069 0.2584 -0.10247 2018 11 22 58444 0.2050 0.2574 -0.10415 2018 11 23 58445 0.2031 0.2563 -0.10574 2018 11 24 58446 0.2012 0.2553 -0.10721 2018 11 25 58447 0.1993 0.2543 -0.10857 2018 11 26 58448 0.1973 0.2533 -0.10979 2018 11 27 58449 0.1953 0.2524 -0.11098 2018 11 28 58450 0.1934 0.2515 -0.11225 2018 11 29 58451 0.1914 0.2506 -0.11360 2018 11 30 58452 0.1894 0.2498 -0.11507 2018 12 1 58453 0.1874 0.2490 -0.11669 2018 12 2 58454 0.1853 0.2482 -0.11835 2018 12 3 58455 0.1833 0.2475 -0.12000 2018 12 4 58456 0.1813 0.2468 -0.12158 2018 12 5 58457 0.1792 0.2461 -0.12301 2018 12 6 58458 0.1771 0.2454 -0.12429 2018 12 7 58459 0.1751 0.2448 -0.12541 These predictions are based on all announced leap seconds. IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 58028 -109.6 -12.1 58029 -109.5 -12.0 58030 -109.4 -11.7 58031 -109.3 -11.3 58032 -109.2 -11.0 58033 -109.3 -11.0 58034 -109.4 -11.3 58035 -109.6 -11.5 58036 -109.8 -11.6 58037 -109.9 -11.4 58038 -110.0 -11.3 58039 -109.8 -11.2 58040 -109.6 -11.2 58041 -109.2 -11.2 58042 -108.9 -11.1 58043 -108.7 -11.1 58044 -108.6 -11.0 58045 -108.6 -10.8 58046 -108.6 -10.7 58047 -108.4 -10.7 58048 -108.3 -10.8 58049 -107.9 -10.9 58050 -107.5 -11.1 58051 -106.9 -11.1 58052 -106.7 -11.0 58053 -106.7 -10.9 58054 -106.8 -10.8 58055 -106.8 -10.7 58056 -106.6 -10.7 58057 -106.5 -10.6 58058 -106.5 -10.4 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 58028 0.30 0.02 58029 0.30 0.05 58030 0.29 0.06 58031 0.29 0.05 58032 0.31 0.07 58033 0.27 0.08 58034 0.27 0.02 58035 0.25 0.05 58036 0.22 -0.02 58037 0.22 0.05 58038 0.19 0.01 58039 0.23 0.05 58040 0.21 0.05 58041 0.21 0.04 58042 0.19 0.08 58043 0.18 0.01 58044 0.21 0.02 58045 0.22 0.12 58046 0.21 0.12 58047 0.26 0.08 58048 0.24 0.03 58049 0.29 0.04 58050 0.27 -0.05 58051 0.32 -0.02 58052 0.30 0.03 58053 0.32 0.06 58054 0.33 0.09 58055 0.32 0.14 58056 0.33 0.08 58057 0.32 0.07 58058 0.32 0.03 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).