********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 28 September 2017 Vol. XXX No. 039 ______________________________________________________________________ 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 22 58018 0.23140 .00009 0.32268 .00009 0.321142 0.000011 17 9 23 58019 0.23028 .00009 0.32076 .00009 0.320142 0.000010 17 9 24 58020 0.22922 .00009 0.31858 .00009 0.319271 0.000010 17 9 25 58021 0.22831 .00009 0.31633 .00009 0.318561 0.000010 17 9 26 58022 0.22742 .00009 0.31404 .00009 0.317982 0.000012 17 9 27 58023 0.22669 .00009 0.31182 .00009 0.317463 0.000012 17 9 28 58024 0.22611 .00009 0.30972 .00009 0.316965 0.000013 _______________________________________________________________________ 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 = 0.1176 + 0.1373 cos A - 0.0446 sin A - 0.0302 cos C - 0.0049 sin C y = 0.3542 - 0.0342 cos A - 0.1237 sin A - 0.0049 cos C + 0.0302 sin C UT1-UTC = 0.2880 - 0.00108 (MJD - 58032) - (UT2-UT1) where A = 2*pi*(MJD-58024)/365.25 and C = 2*pi*(MJD-58024)/435. TAI-UTC(MJD 58025) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58024)**0.80 S t = 0.00025 (MJD-58024)**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 9 29 58025 0.2256 0.3079 0.31643 2017 9 30 58026 0.2249 0.3060 0.31587 2017 10 1 58027 0.2240 0.3043 0.31529 2017 10 2 58028 0.2230 0.3027 0.31467 2017 10 3 58029 0.2219 0.3012 0.31395 2017 10 4 58030 0.2208 0.2997 0.31309 2017 10 5 58031 0.2196 0.2982 0.31211 2017 10 6 58032 0.2184 0.2967 0.31104 2017 10 7 58033 0.2173 0.2952 0.30993 2017 10 8 58034 0.2161 0.2937 0.30883 2017 10 9 58035 0.2148 0.2923 0.30777 2017 10 10 58036 0.2135 0.2909 0.30677 2017 10 11 58037 0.2122 0.2896 0.30583 2017 10 12 58038 0.2108 0.2882 0.30495 2017 10 13 58039 0.2094 0.2868 0.30405 2017 10 14 58040 0.2080 0.2855 0.30307 2017 10 15 58041 0.2065 0.2841 0.30197 2017 10 16 58042 0.2051 0.2828 0.30075 2017 10 17 58043 0.2036 0.2815 0.29943 2017 10 18 58044 0.2022 0.2802 0.29807 2017 10 19 58045 0.2007 0.2789 0.29671 2017 10 20 58046 0.1991 0.2777 0.29541 2017 10 21 58047 0.1976 0.2766 0.29420 2017 10 22 58048 0.1960 0.2754 0.29311 2017 10 23 58049 0.1944 0.2743 0.29213 2017 10 24 58050 0.1927 0.2732 0.29125 2017 10 25 58051 0.1911 0.2721 0.29045 2017 10 26 58052 0.1894 0.2711 0.28969 2017 10 27 58053 0.1877 0.2701 0.28892 2017 10 28 58054 0.1860 0.2691 0.28808 2017 10 29 58055 0.1842 0.2681 0.28715 2017 10 30 58056 0.1825 0.2672 0.28607 2017 10 31 58057 0.1807 0.2663 0.28483 2017 11 1 58058 0.1789 0.2654 0.28342 2017 11 2 58059 0.1771 0.2645 0.28187 2017 11 3 58060 0.1752 0.2637 0.28023 2017 11 4 58061 0.1734 0.2629 0.27858 2017 11 5 58062 0.1715 0.2621 0.27700 2017 11 6 58063 0.1696 0.2613 0.27554 2017 11 7 58064 0.1677 0.2606 0.27420 2017 11 8 58065 0.1658 0.2599 0.27295 2017 11 9 58066 0.1639 0.2592 0.27173 2017 11 10 58067 0.1619 0.2586 0.27046 2017 11 11 58068 0.1600 0.2580 0.26911 2017 11 12 58069 0.1580 0.2574 0.26766 2017 11 13 58070 0.1560 0.2568 0.26614 2017 11 14 58071 0.1541 0.2563 0.26458 2017 11 15 58072 0.1520 0.2558 0.26302 2017 11 16 58073 0.1500 0.2553 0.26151 2017 11 17 58074 0.1480 0.2549 0.26008 2017 11 18 58075 0.1460 0.2545 0.25876 2017 11 19 58076 0.1439 0.2541 0.25755 2017 11 20 58077 0.1419 0.2538 0.25644 2017 11 21 58078 0.1398 0.2534 0.25542 2017 11 22 58079 0.1378 0.2532 0.25446 2017 11 23 58080 0.1357 0.2529 0.25351 2017 11 24 58081 0.1336 0.2527 0.25253 2017 11 25 58082 0.1315 0.2525 0.25147 2017 11 26 58083 0.1294 0.2523 0.25030 2017 11 27 58084 0.1273 0.2522 0.24900 2017 11 28 58085 0.1252 0.2521 0.24755 2017 11 29 58086 0.1231 0.2520 0.24596 2017 11 30 58087 0.1210 0.2519 0.24428 2017 12 1 58088 0.1189 0.2519 0.24256 2017 12 2 58089 0.1168 0.2519 0.24088 2017 12 3 58090 0.1147 0.2520 0.23930 2017 12 4 58091 0.1126 0.2521 0.23786 2017 12 5 58092 0.1105 0.2522 0.23653 2017 12 6 58093 0.1084 0.2523 0.23527 2017 12 7 58094 0.1063 0.2525 0.23400 2017 12 8 58095 0.1041 0.2527 0.23266 2017 12 9 58096 0.1020 0.2529 0.23124 2017 12 10 58097 0.0999 0.2532 0.22974 2017 12 11 58098 0.0978 0.2535 0.22821 2017 12 12 58099 0.0957 0.2538 0.22668 2017 12 13 58100 0.0937 0.2542 0.22521 2017 12 14 58101 0.0916 0.2545 0.22383 2017 12 15 58102 0.0895 0.2550 0.22256 2017 12 16 58103 0.0874 0.2554 0.22141 2017 12 17 58104 0.0854 0.2559 0.22038 2017 12 18 58105 0.0833 0.2564 0.21944 2017 12 19 58106 0.0813 0.2569 0.21857 2017 12 20 58107 0.0792 0.2575 0.21774 2017 12 21 58108 0.0772 0.2581 0.21689 2017 12 22 58109 0.0752 0.2587 0.21598 2017 12 23 58110 0.0731 0.2594 0.21499 2017 12 24 58111 0.0711 0.2601 0.21387 2017 12 25 58112 0.0692 0.2608 0.21262 2017 12 26 58113 0.0672 0.2616 0.21124 2017 12 27 58114 0.0652 0.2623 0.20975 2017 12 28 58115 0.0633 0.2631 0.20820 2017 12 29 58116 0.0613 0.2640 0.20664 2017 12 30 58117 0.0594 0.2648 0.20514 2017 12 31 58118 0.0575 0.2657 0.20374 2018 1 1 58119 0.0556 0.2667 0.20245 2018 1 2 58120 0.0537 0.2676 0.20124 2018 1 3 58121 0.0519 0.2686 0.20004 2018 1 4 58122 0.0500 0.2696 0.19879 2018 1 5 58123 0.0482 0.2706 0.19745 2018 1 6 58124 0.0464 0.2717 0.19602 2018 1 7 58125 0.0446 0.2728 0.19453 2018 1 8 58126 0.0428 0.2739 0.19306 2018 1 9 58127 0.0411 0.2750 0.19164 2018 1 10 58128 0.0393 0.2762 0.19031 2018 1 11 58129 0.0376 0.2774 0.18911 2018 1 12 58130 0.0359 0.2786 0.18803 2018 1 13 58131 0.0342 0.2798 0.18708 2018 1 14 58132 0.0326 0.2811 0.18623 2018 1 15 58133 0.0310 0.2824 0.18552 2018 1 16 58134 0.0294 0.2837 0.18484 2018 1 17 58135 0.0278 0.2851 0.18415 2018 1 18 58136 0.0262 0.2864 0.18340 2018 1 19 58137 0.0247 0.2878 0.18256 2018 1 20 58138 0.0232 0.2892 0.18160 2018 1 21 58139 0.0217 0.2907 0.18050 2018 1 22 58140 0.0202 0.2921 0.17927 2018 1 23 58141 0.0188 0.2936 0.17793 2018 1 24 58142 0.0174 0.2951 0.17653 2018 1 25 58143 0.0160 0.2966 0.17510 2018 1 26 58144 0.0146 0.2982 0.17371 2018 1 27 58145 0.0133 0.2997 0.17239 2018 1 28 58146 0.0120 0.3013 0.17115 2018 1 29 58147 0.0107 0.3029 0.17000 2018 1 30 58148 0.0095 0.3045 0.16885 2018 1 31 58149 0.0083 0.3062 0.16765 2018 2 1 58150 0.0071 0.3078 0.16634 2018 2 2 58151 0.0059 0.3095 0.16490 2018 2 3 58152 0.0048 0.3112 0.16335 2018 2 4 58153 0.0037 0.3129 0.16175 2018 2 5 58154 0.0027 0.3147 0.16017 2018 2 6 58155 0.0016 0.3164 0.15868 2018 2 7 58156 0.0006 0.3182 0.15729 2018 2 8 58157 -0.0004 0.3199 0.15604 2018 2 9 58158 -0.0013 0.3217 0.15491 2018 2 10 58159 -0.0022 0.3235 0.15389 2018 2 11 58160 -0.0031 0.3254 0.15295 2018 2 12 58161 -0.0039 0.3272 0.15205 2018 2 13 58162 -0.0048 0.3290 0.15115 2018 2 14 58163 -0.0055 0.3309 0.15019 2018 2 15 58164 -0.0063 0.3328 0.14915 2018 2 16 58165 -0.0070 0.3346 0.14797 2018 2 17 58166 -0.0077 0.3365 0.14665 2018 2 18 58167 -0.0083 0.3384 0.14519 2018 2 19 58168 -0.0089 0.3404 0.14361 2018 2 20 58169 -0.0095 0.3423 0.14196 2018 2 21 58170 -0.0101 0.3442 0.14029 2018 2 22 58171 -0.0106 0.3462 0.13865 2018 2 23 58172 -0.0110 0.3481 0.13709 2018 2 24 58173 -0.0115 0.3501 0.13561 2018 2 25 58174 -0.0119 0.3520 0.13420 2018 2 26 58175 -0.0123 0.3540 0.13283 2018 2 27 58176 -0.0126 0.3560 0.13142 2018 2 28 58177 -0.0129 0.3580 0.12991 2018 3 1 58178 -0.0132 0.3600 0.12826 2018 3 2 58179 -0.0134 0.3619 0.12645 2018 3 3 58180 -0.0136 0.3639 0.12455 2018 3 4 58181 -0.0137 0.3659 0.12262 2018 3 5 58182 -0.0139 0.3679 0.12073 2018 3 6 58183 -0.0140 0.3700 0.11895 2018 3 7 58184 -0.0140 0.3720 0.11730 2018 3 8 58185 -0.0140 0.3740 0.11579 2018 3 9 58186 -0.0140 0.3760 0.11441 2018 3 10 58187 -0.0139 0.3780 0.11313 2018 3 11 58188 -0.0139 0.3800 0.11191 2018 3 12 58189 -0.0137 0.3820 0.11071 2018 3 13 58190 -0.0136 0.3840 0.10948 2018 3 14 58191 -0.0134 0.3860 0.10816 2018 3 15 58192 -0.0131 0.3880 0.10673 2018 3 16 58193 -0.0129 0.3900 0.10516 2018 3 17 58194 -0.0125 0.3920 0.10344 2018 3 18 58195 -0.0122 0.3940 0.10160 2018 3 19 58196 -0.0118 0.3960 0.09966 2018 3 20 58197 -0.0114 0.3980 0.09769 2018 3 21 58198 -0.0110 0.4000 0.09576 2018 3 22 58199 -0.0105 0.4020 0.09392 2018 3 23 58200 -0.0100 0.4039 0.09218 2018 3 24 58201 -0.0094 0.4059 0.09054 2018 3 25 58202 -0.0088 0.4078 0.08895 2018 3 26 58203 -0.0082 0.4098 0.08736 2018 3 27 58204 -0.0075 0.4117 0.08568 2018 3 28 58205 -0.0068 0.4137 0.08388 2018 3 29 58206 -0.0061 0.4156 0.08191 2018 3 30 58207 -0.0054 0.4175 0.07980 2018 3 31 58208 -0.0046 0.4194 0.07759 2018 4 1 58209 -0.0037 0.4213 0.07537 2018 4 2 58210 -0.0029 0.4232 0.07319 2018 4 3 58211 -0.0020 0.4250 0.07111 2018 4 4 58212 -0.0010 0.4269 0.06915 2018 4 5 58213 -0.0001 0.4287 0.06732 2018 4 6 58214 0.0009 0.4305 0.06559 2018 4 7 58215 0.0019 0.4323 0.06397 2018 4 8 58216 0.0030 0.4341 0.06240 2018 4 9 58217 0.0041 0.4359 0.06087 2018 4 10 58218 0.0052 0.4377 0.05933 2018 4 11 58219 0.0064 0.4394 0.05775 2018 4 12 58220 0.0075 0.4412 0.05609 2018 4 13 58221 0.0088 0.4429 0.05434 2018 4 14 58222 0.0100 0.4446 0.05251 2018 4 15 58223 0.0113 0.4463 0.05062 2018 4 16 58224 0.0126 0.4479 0.04873 2018 4 17 58225 0.0139 0.4496 0.04692 2018 4 18 58226 0.0153 0.4512 0.04523 2018 4 19 58227 0.0167 0.4528 0.04371 2018 4 20 58228 0.0181 0.4544 0.04233 2018 4 21 58229 0.0195 0.4560 0.04107 2018 4 22 58230 0.0210 0.4575 0.03984 2018 4 23 58231 0.0225 0.4591 0.03859 2018 4 24 58232 0.0240 0.4606 0.03726 2018 4 25 58233 0.0256 0.4620 0.03582 2018 4 26 58234 0.0272 0.4635 0.03427 2018 4 27 58235 0.0288 0.4649 0.03267 2018 4 28 58236 0.0304 0.4664 0.03106 2018 4 29 58237 0.0321 0.4677 0.02950 2018 4 30 58238 0.0337 0.4691 0.02804 2018 5 1 58239 0.0354 0.4705 0.02672 2018 5 2 58240 0.0372 0.4718 0.02556 2018 5 3 58241 0.0389 0.4731 0.02457 2018 5 4 58242 0.0407 0.4743 0.02371 2018 5 5 58243 0.0425 0.4756 0.02294 2018 5 6 58244 0.0443 0.4768 0.02219 2018 5 7 58245 0.0461 0.4780 0.02145 2018 5 8 58246 0.0480 0.4792 0.02067 2018 5 9 58247 0.0499 0.4803 0.01981 2018 5 10 58248 0.0518 0.4814 0.01885 2018 5 11 58249 0.0537 0.4825 0.01782 2018 5 12 58250 0.0556 0.4836 0.01670 2018 5 13 58251 0.0576 0.4846 0.01547 2018 5 14 58252 0.0595 0.4856 0.01424 2018 5 15 58253 0.0615 0.4866 0.01309 2018 5 16 58254 0.0635 0.4875 0.01207 2018 5 17 58255 0.0655 0.4884 0.01117 2018 5 18 58256 0.0676 0.4893 0.01034 2018 5 19 58257 0.0696 0.4902 0.00953 2018 5 20 58258 0.0717 0.4910 0.00873 2018 5 21 58259 0.0738 0.4918 0.00788 2018 5 22 58260 0.0759 0.4926 0.00690 2018 5 23 58261 0.0780 0.4933 0.00579 2018 5 24 58262 0.0801 0.4940 0.00455 2018 5 25 58263 0.0822 0.4947 0.00320 2018 5 26 58264 0.0843 0.4953 0.00185 2018 5 27 58265 0.0865 0.4959 0.00057 2018 5 28 58266 0.0886 0.4965 -0.00055 2018 5 29 58267 0.0908 0.4971 -0.00151 2018 5 30 58268 0.0930 0.4976 -0.00229 2018 5 31 58269 0.0952 0.4981 -0.00291 2018 6 1 58270 0.0974 0.4986 -0.00339 2018 6 2 58271 0.0995 0.4990 -0.00378 2018 6 3 58272 0.1018 0.4994 -0.00414 2018 6 4 58273 0.1040 0.4997 -0.00453 2018 6 5 58274 0.1062 0.5001 -0.00499 2018 6 6 58275 0.1084 0.5004 -0.00552 2018 6 7 58276 0.1106 0.5006 -0.00613 2018 6 8 58277 0.1128 0.5009 -0.00683 2018 6 9 58278 0.1151 0.5011 -0.00761 2018 6 10 58279 0.1173 0.5012 -0.00842 2018 6 11 58280 0.1195 0.5014 -0.00921 2018 6 12 58281 0.1218 0.5015 -0.00992 2018 6 13 58282 0.1240 0.5016 -0.01053 2018 6 14 58283 0.1262 0.5016 -0.01101 2018 6 15 58284 0.1285 0.5016 -0.01141 2018 6 16 58285 0.1307 0.5016 -0.01179 2018 6 17 58286 0.1329 0.5015 -0.01225 2018 6 18 58287 0.1351 0.5014 -0.01282 2018 6 19 58288 0.1374 0.5013 -0.01350 2018 6 20 58289 0.1396 0.5012 -0.01428 2018 6 21 58290 0.1418 0.5010 -0.01506 2018 6 22 58291 0.1440 0.5008 -0.01576 2018 6 23 58292 0.1462 0.5005 -0.01632 2018 6 24 58293 0.1484 0.5002 -0.01677 2018 6 25 58294 0.1506 0.4999 -0.01709 2018 6 26 58295 0.1528 0.4996 -0.01733 2018 6 27 58296 0.1550 0.4992 -0.01748 2018 6 28 58297 0.1571 0.4988 -0.01754 2018 6 29 58298 0.1593 0.4984 -0.01753 2018 6 30 58299 0.1614 0.4979 -0.01751 2018 7 1 58300 0.1636 0.4974 -0.01753 2018 7 2 58301 0.1657 0.4969 -0.01761 2018 7 3 58302 0.1678 0.4963 -0.01784 2018 7 4 58303 0.1699 0.4957 -0.01818 2018 7 5 58304 0.1720 0.4951 -0.01862 2018 7 6 58305 0.1741 0.4944 -0.01914 2018 7 7 58306 0.1762 0.4937 -0.01974 2018 7 8 58307 0.1782 0.4930 -0.02038 2018 7 9 58308 0.1803 0.4923 -0.02092 2018 7 10 58309 0.1823 0.4915 -0.02137 2018 7 11 58310 0.1843 0.4907 -0.02172 2018 7 12 58311 0.1863 0.4899 -0.02194 2018 7 13 58312 0.1883 0.4890 -0.02212 2018 7 14 58313 0.1902 0.4881 -0.02237 2018 7 15 58314 0.1921 0.4872 -0.02271 2018 7 16 58315 0.1941 0.4863 -0.02317 2018 7 17 58316 0.1960 0.4853 -0.02375 2018 7 18 58317 0.1979 0.4843 -0.02436 2018 7 19 58318 0.1997 0.4833 -0.02496 2018 7 20 58319 0.2016 0.4822 -0.02548 2018 7 21 58320 0.2034 0.4811 -0.02586 2018 7 22 58321 0.2052 0.4800 -0.02607 2018 7 23 58322 0.2070 0.4789 -0.02612 2018 7 24 58323 0.2087 0.4777 -0.02606 2018 7 25 58324 0.2104 0.4765 -0.02590 2018 7 26 58325 0.2122 0.4753 -0.02575 2018 7 27 58326 0.2138 0.4741 -0.02563 2018 7 28 58327 0.2155 0.4728 -0.02553 2018 7 29 58328 0.2171 0.4715 -0.02545 2018 7 30 58329 0.2188 0.4702 -0.02548 2018 7 31 58330 0.2204 0.4689 -0.02568 2018 8 1 58331 0.2219 0.4676 -0.02603 2018 8 2 58332 0.2235 0.4662 -0.02652 2018 8 3 58333 0.2250 0.4648 -0.02709 2018 8 4 58334 0.2265 0.4634 -0.02767 2018 8 5 58335 0.2279 0.4619 -0.02824 2018 8 6 58336 0.2293 0.4605 -0.02877 2018 8 7 58337 0.2307 0.4590 -0.02928 2018 8 8 58338 0.2321 0.4575 -0.02975 2018 8 9 58339 0.2335 0.4560 -0.03019 2018 8 10 58340 0.2348 0.4544 -0.03071 2018 8 11 58341 0.2361 0.4529 -0.03137 2018 8 12 58342 0.2373 0.4513 -0.03218 2018 8 13 58343 0.2385 0.4497 -0.03312 2018 8 14 58344 0.2397 0.4481 -0.03414 2018 8 15 58345 0.2409 0.4464 -0.03518 2018 8 16 58346 0.2420 0.4448 -0.03617 2018 8 17 58347 0.2432 0.4431 -0.03704 2018 8 18 58348 0.2442 0.4415 -0.03773 2018 8 19 58349 0.2453 0.4398 -0.03822 2018 8 20 58350 0.2463 0.4380 -0.03855 2018 8 21 58351 0.2473 0.4363 -0.03875 2018 8 22 58352 0.2482 0.4346 -0.03885 2018 8 23 58353 0.2491 0.4328 -0.03890 2018 8 24 58354 0.2500 0.4311 -0.03897 2018 8 25 58355 0.2508 0.4293 -0.03910 2018 8 26 58356 0.2517 0.4275 -0.03935 2018 8 27 58357 0.2524 0.4257 -0.03982 2018 8 28 58358 0.2532 0.4239 -0.04050 2018 8 29 58359 0.2539 0.4221 -0.04135 2018 8 30 58360 0.2546 0.4203 -0.04233 2018 8 31 58361 0.2552 0.4184 -0.04339 2018 9 1 58362 0.2558 0.4166 -0.04443 2018 9 2 58363 0.2564 0.4147 -0.04544 2018 9 3 58364 0.2569 0.4128 -0.04639 2018 9 4 58365 0.2574 0.4110 -0.04729 2018 9 5 58366 0.2579 0.4091 -0.04816 2018 9 6 58367 0.2584 0.4072 -0.04898 2018 9 7 58368 0.2588 0.4053 -0.04985 2018 9 8 58369 0.2591 0.4034 -0.05086 2018 9 9 58370 0.2595 0.4015 -0.05205 2018 9 10 58371 0.2598 0.3996 -0.05339 2018 9 11 58372 0.2600 0.3977 -0.05481 2018 9 12 58373 0.2602 0.3958 -0.05622 2018 9 13 58374 0.2604 0.3939 -0.05752 2018 9 14 58375 0.2606 0.3920 -0.05862 2018 9 15 58376 0.2607 0.3900 -0.05951 2018 9 16 58377 0.2608 0.3881 -0.06027 2018 9 17 58378 0.2609 0.3862 -0.06094 2018 9 18 58379 0.2609 0.3843 -0.06154 2018 9 19 58380 0.2608 0.3824 -0.06218 2018 9 20 58381 0.2608 0.3804 -0.06288 2018 9 21 58382 0.2607 0.3785 -0.06364 2018 9 22 58383 0.2606 0.3766 -0.06449 2018 9 23 58384 0.2604 0.3747 -0.06552 2018 9 24 58385 0.2602 0.3728 -0.06670 2018 9 25 58386 0.2600 0.3709 -0.06800 2018 9 26 58387 0.2597 0.3690 -0.06943 2018 9 27 58388 0.2594 0.3671 -0.07090 2018 9 28 58389 0.2591 0.3652 -0.07235 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) 57998 -111.04 0.30 -12.16 0.01 57999 -111.24 0.30 -12.34 0.01 58000 -111.27 0.30 -12.50 0.04 58001 -111.14 0.30 -12.48 0.05 58002 -111.01 0.30 -12.25 0.05 58003 -111.03 0.30 -11.96 0.05 58004 -111.15 0.30 -11.82 0.05 58005 -111.26 0.30 -11.89 0.05 58006 -111.30 0.30 -12.06 0.03 58007 -111.32 0.30 -12.17 0.03 58008 -111.43 0.30 -12.23 0.01 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57998 0.120 0.119 0.204 0.010 57999 0.118 0.119 0.181 0.010 58000 0.130 0.119 0.150 0.040 58001 0.150 0.119 0.126 0.050 58002 0.164 0.119 0.124 0.050 58003 0.162 0.119 0.137 0.050 58004 0.157 0.119 0.130 0.050 58005 0.151 0.119 0.102 0.050 58006 0.145 0.119 0.066 0.030 58007 0.147 0.119 0.042 0.030 58008 0.153 0.119 -0.024 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).