********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 27 September 2018 Vol. XXXI 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 = +0.0 seconds beginning 21 Sep 2018 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 18 9 21 58382 0.21190 .00009 0.34566 .00009 0.055748 0.000017 18 9 22 58383 0.21180 .00009 0.34420 .00009 0.055477 0.000018 18 9 23 58384 0.21173 .00009 0.34259 .00009 0.055032 0.000024 18 9 24 58385 0.21185 .00009 0.34090 .00009 0.054407 0.000004 18 9 25 58386 0.21183 .00009 0.33927 .00009 0.053631 0.000004 18 9 26 58387 0.21134 .00009 0.33765 .00009 0.052773 0.000004 18 9 27 58388 0.21063 .00009 0.33603 .00009 0.051887 0.000004 _______________________________________________________________________ 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 = 0.1216 + 0.0783 cos A - 0.0644 sin A + 0.0088 cos C + 0.0282 sin C y = 0.3550 - 0.0549 cos A - 0.0763 sin A + 0.0282 cos C - 0.0088 sin C UT1-UTC = 0.0139 - 0.00066 (MJD - 58396) - (UT2-UT1) where A = 2*pi*(MJD-58388)/365.25 and C = 2*pi*(MJD-58388)/435. TAI-UTC(MJD 58389) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58388)**0.80 S t = 0.00025 (MJD-58388)**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) 2018 9 28 58389 0.2100 0.3345 0.05097 2018 9 29 58390 0.2094 0.3329 0.05010 2018 9 30 58391 0.2089 0.3314 0.04932 2018 10 1 58392 0.2083 0.3299 0.04865 2018 10 2 58393 0.2078 0.3285 0.04807 2018 10 3 58394 0.2072 0.3272 0.04752 2018 10 4 58395 0.2066 0.3260 0.04691 2018 10 5 58396 0.2058 0.3248 0.04617 2018 10 6 58397 0.2050 0.3236 0.04524 2018 10 7 58398 0.2042 0.3224 0.04414 2018 10 8 58399 0.2034 0.3211 0.04288 2018 10 9 58400 0.2026 0.3199 0.04154 2018 10 10 58401 0.2018 0.3187 0.04026 2018 10 11 58402 0.2009 0.3175 0.03910 2018 10 12 58403 0.2000 0.3163 0.03811 2018 10 13 58404 0.1991 0.3151 0.03733 2018 10 14 58405 0.1982 0.3139 0.03671 2018 10 15 58406 0.1972 0.3127 0.03620 2018 10 16 58407 0.1962 0.3116 0.03575 2018 10 17 58408 0.1952 0.3104 0.03530 2018 10 18 58409 0.1941 0.3093 0.03478 2018 10 19 58410 0.1930 0.3082 0.03417 2018 10 20 58411 0.1919 0.3072 0.03344 2018 10 21 58412 0.1908 0.3061 0.03258 2018 10 22 58413 0.1896 0.3050 0.03159 2018 10 23 58414 0.1885 0.3040 0.03049 2018 10 24 58415 0.1873 0.3030 0.02932 2018 10 25 58416 0.1861 0.3021 0.02813 2018 10 26 58417 0.1848 0.3011 0.02698 2018 10 27 58418 0.1836 0.3002 0.02593 2018 10 28 58419 0.1823 0.2993 0.02498 2018 10 29 58420 0.1811 0.2984 0.02413 2018 10 30 58421 0.1798 0.2975 0.02331 2018 10 31 58422 0.1784 0.2967 0.02247 2018 11 1 58423 0.1771 0.2959 0.02152 2018 11 2 58424 0.1758 0.2951 0.02041 2018 11 3 58425 0.1744 0.2943 0.01913 2018 11 4 58426 0.1730 0.2935 0.01772 2018 11 5 58427 0.1716 0.2928 0.01622 2018 11 6 58428 0.1702 0.2921 0.01471 2018 11 7 58429 0.1688 0.2914 0.01329 2018 11 8 58430 0.1673 0.2907 0.01201 2018 11 9 58431 0.1658 0.2900 0.01089 2018 11 10 58432 0.1644 0.2894 0.00992 2018 11 11 58433 0.1629 0.2888 0.00907 2018 11 12 58434 0.1614 0.2882 0.00830 2018 11 13 58435 0.1599 0.2877 0.00757 2018 11 14 58436 0.1584 0.2871 0.00681 2018 11 15 58437 0.1568 0.2866 0.00599 2018 11 16 58438 0.1553 0.2862 0.00506 2018 11 17 58439 0.1537 0.2857 0.00402 2018 11 18 58440 0.1522 0.2853 0.00285 2018 11 19 58441 0.1506 0.2849 0.00158 2018 11 20 58442 0.1490 0.2845 0.00023 2018 11 21 58443 0.1475 0.2841 -0.00113 2018 11 22 58444 0.1459 0.2838 -0.00246 2018 11 23 58445 0.1443 0.2835 -0.00368 2018 11 24 58446 0.1427 0.2832 -0.00476 2018 11 25 58447 0.1411 0.2829 -0.00571 2018 11 26 58448 0.1395 0.2827 -0.00655 2018 11 27 58449 0.1378 0.2825 -0.00738 2018 11 28 58450 0.1362 0.2823 -0.00826 2018 11 29 58451 0.1346 0.2821 -0.00926 2018 11 30 58452 0.1330 0.2820 -0.01040 2018 12 1 58453 0.1313 0.2819 -0.01165 2018 12 2 58454 0.1297 0.2818 -0.01299 2018 12 3 58455 0.1280 0.2817 -0.01432 2018 12 4 58456 0.1264 0.2817 -0.01559 2018 12 5 58457 0.1248 0.2817 -0.01673 2018 12 6 58458 0.1231 0.2817 -0.01772 2018 12 7 58459 0.1215 0.2818 -0.01855 2018 12 8 58460 0.1199 0.2818 -0.01923 2018 12 9 58461 0.1182 0.2819 -0.01981 2018 12 10 58462 0.1166 0.2821 -0.02034 2018 12 11 58463 0.1150 0.2822 -0.02085 2018 12 12 58464 0.1133 0.2824 -0.02141 2018 12 13 58465 0.1117 0.2826 -0.02204 2018 12 14 58466 0.1101 0.2828 -0.02278 2018 12 15 58467 0.1085 0.2830 -0.02363 2018 12 16 58468 0.1068 0.2833 -0.02459 2018 12 17 58469 0.1052 0.2836 -0.02562 2018 12 18 58470 0.1036 0.2839 -0.02672 2018 12 19 58471 0.1020 0.2843 -0.02781 2018 12 20 58472 0.1004 0.2847 -0.02886 2018 12 21 58473 0.0989 0.2851 -0.02981 2018 12 22 58474 0.0973 0.2855 -0.03063 2018 12 23 58475 0.0957 0.2859 -0.03137 2018 12 24 58476 0.0942 0.2864 -0.03206 2018 12 25 58477 0.0926 0.2869 -0.03280 2018 12 26 58478 0.0911 0.2874 -0.03366 2018 12 27 58479 0.0895 0.2880 -0.03466 2018 12 28 58480 0.0880 0.2885 -0.03579 2018 12 29 58481 0.0865 0.2891 -0.03699 2018 12 30 58482 0.0850 0.2897 -0.03819 2018 12 31 58483 0.0835 0.2904 -0.03930 2019 1 1 58484 0.0821 0.2910 -0.04028 2019 1 2 58485 0.0806 0.2917 -0.04110 2019 1 3 58486 0.0792 0.2924 -0.04174 2019 1 4 58487 0.0777 0.2932 -0.04224 2019 1 5 58488 0.0763 0.2939 -0.04262 2019 1 6 58489 0.0749 0.2947 -0.04293 2019 1 7 58490 0.0735 0.2955 -0.04323 2019 1 8 58491 0.0722 0.2963 -0.04354 2019 1 9 58492 0.0708 0.2971 -0.04393 2019 1 10 58493 0.0695 0.2980 -0.04442 2019 1 11 58494 0.0682 0.2989 -0.04501 2019 1 12 58495 0.0669 0.2998 -0.04572 2019 1 13 58496 0.0656 0.3007 -0.04652 2019 1 14 58497 0.0643 0.3017 -0.04739 2019 1 15 58498 0.0631 0.3026 -0.04830 2019 1 16 58499 0.0618 0.3036 -0.04918 2019 1 17 58500 0.0606 0.3046 -0.05001 2019 1 18 58501 0.0594 0.3056 -0.05074 2019 1 19 58502 0.0582 0.3067 -0.05138 2019 1 20 58503 0.0571 0.3077 -0.05198 2019 1 21 58504 0.0560 0.3088 -0.05261 2019 1 22 58505 0.0549 0.3099 -0.05336 2019 1 23 58506 0.0538 0.3110 -0.05429 2019 1 24 58507 0.0527 0.3121 -0.05539 2019 1 25 58508 0.0517 0.3133 -0.05661 2019 1 26 58509 0.0506 0.3144 -0.05787 2019 1 27 58510 0.0496 0.3156 -0.05906 2019 1 28 58511 0.0487 0.3168 -0.06013 2019 1 29 58512 0.0477 0.3180 -0.06103 2019 1 30 58513 0.0468 0.3192 -0.06176 2019 1 31 58514 0.0459 0.3204 -0.06234 2019 2 1 58515 0.0450 0.3217 -0.06280 2019 2 2 58516 0.0441 0.3230 -0.06320 2019 2 3 58517 0.0433 0.3242 -0.06358 2019 2 4 58518 0.0425 0.3255 -0.06399 2019 2 5 58519 0.0417 0.3268 -0.06447 2019 2 6 58520 0.0409 0.3281 -0.06506 2019 2 7 58521 0.0402 0.3295 -0.06577 2019 2 8 58522 0.0395 0.3308 -0.06660 2019 2 9 58523 0.0388 0.3322 -0.06753 2019 2 10 58524 0.0382 0.3335 -0.06853 2019 2 11 58525 0.0376 0.3349 -0.06956 2019 2 12 58526 0.0370 0.3363 -0.07059 2019 2 13 58527 0.0364 0.3377 -0.07157 2019 2 14 58528 0.0358 0.3390 -0.07247 2019 2 15 58529 0.0353 0.3405 -0.07330 2019 2 16 58530 0.0348 0.3419 -0.07408 2019 2 17 58531 0.0344 0.3433 -0.07487 2019 2 18 58532 0.0339 0.3447 -0.07576 2019 2 19 58533 0.0335 0.3462 -0.07684 2019 2 20 58534 0.0332 0.3476 -0.07813 2019 2 21 58535 0.0328 0.3490 -0.07961 2019 2 22 58536 0.0325 0.3505 -0.08120 2019 2 23 58537 0.0322 0.3520 -0.08278 2019 2 24 58538 0.0319 0.3534 -0.08425 2019 2 25 58539 0.0317 0.3549 -0.08555 2019 2 26 58540 0.0315 0.3564 -0.08666 2019 2 27 58541 0.0313 0.3578 -0.08760 2019 2 28 58542 0.0312 0.3593 -0.08840 2019 3 1 58543 0.0310 0.3608 -0.08911 2019 3 2 58544 0.0310 0.3623 -0.08979 2019 3 3 58545 0.0309 0.3638 -0.09049 2019 3 4 58546 0.0309 0.3653 -0.09125 2019 3 5 58547 0.0309 0.3667 -0.09212 2019 3 6 58548 0.0309 0.3682 -0.09310 2019 3 7 58549 0.0309 0.3697 -0.09421 2019 3 8 58550 0.0310 0.3712 -0.09542 2019 3 9 58551 0.0311 0.3727 -0.09671 2019 3 10 58552 0.0313 0.3742 -0.09803 2019 3 11 58553 0.0315 0.3756 -0.09934 2019 3 12 58554 0.0317 0.3771 -0.10058 2019 3 13 58555 0.0319 0.3786 -0.10175 2019 3 14 58556 0.0321 0.3801 -0.10282 2019 3 15 58557 0.0324 0.3815 -0.10381 2019 3 16 58558 0.0327 0.3830 -0.10479 2019 3 17 58559 0.0331 0.3844 -0.10583 2019 3 18 58560 0.0335 0.3859 -0.10701 2019 3 19 58561 0.0339 0.3873 -0.10841 2019 3 20 58562 0.0343 0.3888 -0.11002 2019 3 21 58563 0.0348 0.3902 -0.11180 2019 3 22 58564 0.0352 0.3916 -0.11364 2019 3 23 58565 0.0358 0.3931 -0.11542 2019 3 24 58566 0.0363 0.3945 -0.11705 2019 3 25 58567 0.0369 0.3959 -0.11848 2019 3 26 58568 0.0375 0.3973 -0.11970 2019 3 27 58569 0.0381 0.3987 -0.12075 2019 3 28 58570 0.0387 0.4000 -0.12169 2019 3 29 58571 0.0394 0.4014 -0.12256 2019 3 30 58572 0.0401 0.4028 -0.12344 2019 3 31 58573 0.0409 0.4041 -0.12437 2019 4 1 58574 0.0416 0.4054 -0.12540 2019 4 2 58575 0.0424 0.4068 -0.12655 2019 4 3 58576 0.0432 0.4081 -0.12782 2019 4 4 58577 0.0441 0.4094 -0.12921 2019 4 5 58578 0.0449 0.4107 -0.13068 2019 4 6 58579 0.0458 0.4119 -0.13218 2019 4 7 58580 0.0467 0.4132 -0.13363 2019 4 8 58581 0.0477 0.4144 -0.13499 2019 4 9 58582 0.0486 0.4157 -0.13621 2019 4 10 58583 0.0496 0.4169 -0.13727 2019 4 11 58584 0.0506 0.4181 -0.13819 2019 4 12 58585 0.0516 0.4193 -0.13902 2019 4 13 58586 0.0527 0.4204 -0.13982 2019 4 14 58587 0.0538 0.4216 -0.14068 2019 4 15 58588 0.0549 0.4227 -0.14167 2019 4 16 58589 0.0560 0.4238 -0.14285 2019 4 17 58590 0.0571 0.4249 -0.14420 2019 4 18 58591 0.0583 0.4260 -0.14566 2019 4 19 58592 0.0595 0.4271 -0.14712 2019 4 20 58593 0.0607 0.4281 -0.14847 2019 4 21 58594 0.0619 0.4292 -0.14963 2019 4 22 58595 0.0632 0.4302 -0.15057 2019 4 23 58596 0.0645 0.4312 -0.15130 2019 4 24 58597 0.0658 0.4321 -0.15187 2019 4 25 58598 0.0671 0.4331 -0.15233 2019 4 26 58599 0.0684 0.4340 -0.15276 2019 4 27 58600 0.0697 0.4349 -0.15323 2019 4 28 58601 0.0711 0.4358 -0.15379 2019 4 29 58602 0.0725 0.4367 -0.15448 2019 4 30 58603 0.0739 0.4375 -0.15530 2019 5 1 58604 0.0753 0.4384 -0.15622 2019 5 2 58605 0.0767 0.4392 -0.15720 2019 5 3 58606 0.0782 0.4400 -0.15820 2019 5 4 58607 0.0796 0.4407 -0.15917 2019 5 5 58608 0.0811 0.4415 -0.16005 2019 5 6 58609 0.0826 0.4422 -0.16075 2019 5 7 58610 0.0841 0.4429 -0.16130 2019 5 8 58611 0.0856 0.4435 -0.16173 2019 5 9 58612 0.0871 0.4442 -0.16206 2019 5 10 58613 0.0887 0.4448 -0.16241 2019 5 11 58614 0.0902 0.4454 -0.16281 2019 5 12 58615 0.0918 0.4460 -0.16327 2019 5 13 58616 0.0934 0.4465 -0.16394 2019 5 14 58617 0.0950 0.4470 -0.16483 2019 5 15 58618 0.0966 0.4475 -0.16585 2019 5 16 58619 0.0982 0.4480 -0.16690 2019 5 17 58620 0.0998 0.4485 -0.16791 2019 5 18 58621 0.1014 0.4489 -0.16879 2019 5 19 58622 0.1031 0.4493 -0.16947 2019 5 20 58623 0.1047 0.4497 -0.16994 2019 5 21 58624 0.1064 0.4500 -0.17026 2019 5 22 58625 0.1080 0.4504 -0.17049 2019 5 23 58626 0.1097 0.4507 -0.17068 2019 5 24 58627 0.1114 0.4509 -0.17090 2019 5 25 58628 0.1130 0.4512 -0.17121 2019 5 26 58629 0.1147 0.4514 -0.17165 2019 5 27 58630 0.1164 0.4516 -0.17223 2019 5 28 58631 0.1181 0.4518 -0.17293 2019 5 29 58632 0.1198 0.4519 -0.17372 2019 5 30 58633 0.1215 0.4520 -0.17455 2019 5 31 58634 0.1232 0.4521 -0.17542 2019 6 1 58635 0.1249 0.4522 -0.17634 2019 6 2 58636 0.1266 0.4522 -0.17722 2019 6 3 58637 0.1283 0.4522 -0.17799 2019 6 4 58638 0.1300 0.4522 -0.17867 2019 6 5 58639 0.1317 0.4522 -0.17926 2019 6 6 58640 0.1334 0.4521 -0.17978 2019 6 7 58641 0.1351 0.4520 -0.18029 2019 6 8 58642 0.1368 0.4519 -0.18080 2019 6 9 58643 0.1385 0.4518 -0.18143 2019 6 10 58644 0.1402 0.4516 -0.18220 2019 6 11 58645 0.1419 0.4514 -0.18298 2019 6 12 58646 0.1435 0.4512 -0.18376 2019 6 13 58647 0.1452 0.4509 -0.18441 2019 6 14 58648 0.1469 0.4507 -0.18492 2019 6 15 58649 0.1486 0.4504 -0.18522 2019 6 16 58650 0.1502 0.4500 -0.18523 2019 6 17 58651 0.1519 0.4497 -0.18504 2019 6 18 58652 0.1535 0.4493 -0.18465 2019 6 19 58653 0.1552 0.4489 -0.18415 2019 6 20 58654 0.1568 0.4485 -0.18359 2019 6 21 58655 0.1584 0.4480 -0.18301 2019 6 22 58656 0.1601 0.4476 -0.18246 2019 6 23 58657 0.1617 0.4471 -0.18205 2019 6 24 58658 0.1633 0.4465 -0.18176 2019 6 25 58659 0.1648 0.4460 -0.18149 2019 6 26 58660 0.1664 0.4454 -0.18130 2019 6 27 58661 0.1680 0.4448 -0.18110 2019 6 28 58662 0.1695 0.4442 -0.18093 2019 6 29 58663 0.1711 0.4435 -0.18073 2019 6 30 58664 0.1726 0.4429 -0.18037 2019 7 1 58665 0.1741 0.4422 -0.17988 2019 7 2 58666 0.1756 0.4414 -0.17932 2019 7 3 58667 0.1771 0.4407 -0.17878 2019 7 4 58668 0.1786 0.4399 -0.17831 2019 7 5 58669 0.1800 0.4391 -0.17802 2019 7 6 58670 0.1815 0.4383 -0.17797 2019 7 7 58671 0.1829 0.4375 -0.17813 2019 7 8 58672 0.1843 0.4366 -0.17841 2019 7 9 58673 0.1857 0.4358 -0.17878 2019 7 10 58674 0.1871 0.4349 -0.17915 2019 7 11 58675 0.1884 0.4339 -0.17941 2019 7 12 58676 0.1898 0.4330 -0.17946 2019 7 13 58677 0.1911 0.4320 -0.17935 2019 7 14 58678 0.1924 0.4311 -0.17906 2019 7 15 58679 0.1937 0.4301 -0.17862 2019 7 16 58680 0.1949 0.4290 -0.17809 2019 7 17 58681 0.1962 0.4280 -0.17756 2019 7 18 58682 0.1974 0.4269 -0.17707 2019 7 19 58683 0.1986 0.4258 -0.17662 2019 7 20 58684 0.1998 0.4248 -0.17631 2019 7 21 58685 0.2009 0.4236 -0.17617 2019 7 22 58686 0.2021 0.4225 -0.17611 2019 7 23 58687 0.2032 0.4214 -0.17613 2019 7 24 58688 0.2043 0.4202 -0.17622 2019 7 25 58689 0.2053 0.4190 -0.17633 2019 7 26 58690 0.2064 0.4178 -0.17642 2019 7 27 58691 0.2074 0.4166 -0.17652 2019 7 28 58692 0.2084 0.4153 -0.17657 2019 7 29 58693 0.2093 0.4141 -0.17657 2019 7 30 58694 0.2103 0.4128 -0.17654 2019 7 31 58695 0.2112 0.4116 -0.17653 2019 8 1 58696 0.2121 0.4103 -0.17664 2019 8 2 58697 0.2130 0.4090 -0.17689 2019 8 3 58698 0.2138 0.4076 -0.17738 2019 8 4 58699 0.2146 0.4063 -0.17806 2019 8 5 58700 0.2154 0.4050 -0.17883 2019 8 6 58701 0.2162 0.4036 -0.17954 2019 8 7 58702 0.2169 0.4022 -0.18011 2019 8 8 58703 0.2176 0.4008 -0.18050 2019 8 9 58704 0.2183 0.3995 -0.18070 2019 8 10 58705 0.2190 0.3981 -0.18067 2019 8 11 58706 0.2196 0.3966 -0.18049 2019 8 12 58707 0.2202 0.3952 -0.18021 2019 8 13 58708 0.2208 0.3938 -0.17985 2019 8 14 58709 0.2213 0.3923 -0.17945 2019 8 15 58710 0.2218 0.3909 -0.17910 2019 8 16 58711 0.2223 0.3894 -0.17890 2019 8 17 58712 0.2228 0.3880 -0.17886 2019 8 18 58713 0.2232 0.3865 -0.17893 2019 8 19 58714 0.2236 0.3850 -0.17907 2019 8 20 58715 0.2239 0.3835 -0.17928 2019 8 21 58716 0.2243 0.3821 -0.17959 2019 8 22 58717 0.2246 0.3806 -0.17995 2019 8 23 58718 0.2249 0.3791 -0.18026 2019 8 24 58719 0.2251 0.3776 -0.18050 2019 8 25 58720 0.2253 0.3761 -0.18070 2019 8 26 58721 0.2255 0.3745 -0.18087 2019 8 27 58722 0.2257 0.3730 -0.18105 2019 8 28 58723 0.2258 0.3715 -0.18126 2019 8 29 58724 0.2259 0.3700 -0.18160 2019 8 30 58725 0.2260 0.3685 -0.18214 2019 8 31 58726 0.2260 0.3670 -0.18290 2019 9 1 58727 0.2260 0.3654 -0.18384 2019 9 2 58728 0.2260 0.3639 -0.18479 2019 9 3 58729 0.2260 0.3624 -0.18570 2019 9 4 58730 0.2259 0.3609 -0.18647 2019 9 5 58731 0.2258 0.3594 -0.18703 2019 9 6 58732 0.2256 0.3578 -0.18740 2019 9 7 58733 0.2254 0.3563 -0.18756 2019 9 8 58734 0.2252 0.3548 -0.18761 2019 9 9 58735 0.2250 0.3533 -0.18765 2019 9 10 58736 0.2247 0.3518 -0.18770 2019 9 11 58737 0.2244 0.3503 -0.18788 2019 9 12 58738 0.2241 0.3488 -0.18818 2019 9 13 58739 0.2238 0.3473 -0.18861 2019 9 14 58740 0.2234 0.3458 -0.18921 2019 9 15 58741 0.2230 0.3444 -0.18992 2019 9 16 58742 0.2225 0.3429 -0.19071 2019 9 17 58743 0.2220 0.3414 -0.19159 2019 9 18 58744 0.2215 0.3400 -0.19249 2019 9 19 58745 0.2210 0.3385 -0.19328 2019 9 20 58746 0.2204 0.3371 -0.19398 2019 9 21 58747 0.2199 0.3356 -0.19461 2019 9 22 58748 0.2192 0.3342 -0.19513 2019 9 23 58749 0.2186 0.3328 -0.19558 2019 9 24 58750 0.2179 0.3314 -0.19603 2019 9 25 58751 0.2172 0.3300 -0.19654 2019 9 26 58752 0.2165 0.3286 -0.19724 2019 9 27 58753 0.2157 0.3273 -0.19819 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) 58366 -115.94 0.08 -11.56 0.21 58367 -115.72 0.08 -11.57 0.21 58368 -115.46 0.08 -11.39 0.21 58369 -115.28 0.13 -11.05 0.20 58370 -115.21 0.15 -10.75 0.27 58371 -115.21 0.15 -10.69 0.27 58372 -115.28 0.19 -10.78 0.37 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58366 -0.046 0.033 0.184 0.207 58367 -0.046 0.033 0.203 0.207 58368 -0.047 0.033 0.224 0.207 58369 -0.050 0.050 0.250 0.197 58370 -0.054 0.060 0.278 0.266 58371 -0.058 0.060 0.309 0.266 58372 -0.063 0.077 0.341 0.369 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).