********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 20 September 2018 Vol. XXXI No. 038 ______________________________________________________________________ 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 = +0.1 seconds beginning 15 Mar 2018 at 0000 UTC = +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 14 58375 0.21351 .00009 0.35501 .00009 0.056865 0.000010 18 9 15 58376 0.21291 .00009 0.35398 .00009 0.056409 0.000011 18 9 16 58377 0.21238 .00009 0.35283 .00009 0.056125 0.000010 18 9 17 58378 0.21209 .00009 0.35159 .00009 0.055999 0.000007 18 9 18 58379 0.21208 .00009 0.35024 .00009 0.055941 0.000008 18 9 19 58380 0.21207 .00009 0.34872 .00009 0.055891 0.000008 18 9 20 58381 0.21197 .00009 0.34715 .00009 0.055836 0.000055 _______________________________________________________________________ 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 = 0.1194 + 0.0877 cos A - 0.0534 sin A + 0.0041 cos C + 0.0268 sin C y = 0.3580 - 0.0446 cos A - 0.0850 sin A + 0.0268 cos C - 0.0041 sin C UT1-UTC = 0.0175 - 0.00067 (MJD - 58389) - (UT2-UT1) where A = 2*pi*(MJD-58381)/365.25 and C = 2*pi*(MJD-58381)/435. TAI-UTC(MJD 58382) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58381)**0.80 S t = 0.00025 (MJD-58381)**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 21 58382 0.2118 0.3457 0.05566 2018 9 22 58383 0.2115 0.3444 0.05532 2018 9 23 58384 0.2110 0.3430 0.05484 2018 9 24 58385 0.2106 0.3417 0.05421 2018 9 25 58386 0.2101 0.3404 0.05345 2018 9 26 58387 0.2097 0.3390 0.05261 2018 9 27 58388 0.2093 0.3377 0.05176 2018 9 28 58389 0.2088 0.3364 0.05092 2018 9 29 58390 0.2084 0.3352 0.05014 2018 9 30 58391 0.2079 0.3339 0.04942 2018 10 1 58392 0.2073 0.3326 0.04877 2018 10 2 58393 0.2067 0.3314 0.04820 2018 10 3 58394 0.2061 0.3302 0.04766 2018 10 4 58395 0.2055 0.3290 0.04708 2018 10 5 58396 0.2048 0.3279 0.04637 2018 10 6 58397 0.2041 0.3267 0.04547 2018 10 7 58398 0.2033 0.3256 0.04437 2018 10 8 58399 0.2025 0.3244 0.04312 2018 10 9 58400 0.2017 0.3232 0.04182 2018 10 10 58401 0.2009 0.3220 0.04056 2018 10 11 58402 0.2000 0.3208 0.03944 2018 10 12 58403 0.1992 0.3196 0.03848 2018 10 13 58404 0.1982 0.3185 0.03768 2018 10 14 58405 0.1973 0.3174 0.03703 2018 10 15 58406 0.1964 0.3162 0.03647 2018 10 16 58407 0.1954 0.3151 0.03596 2018 10 17 58408 0.1944 0.3141 0.03544 2018 10 18 58409 0.1933 0.3130 0.03485 2018 10 19 58410 0.1923 0.3119 0.03416 2018 10 20 58411 0.1912 0.3109 0.03333 2018 10 21 58412 0.1901 0.3098 0.03236 2018 10 22 58413 0.1890 0.3088 0.03125 2018 10 23 58414 0.1879 0.3078 0.03000 2018 10 24 58415 0.1868 0.3069 0.02868 2018 10 25 58416 0.1856 0.3059 0.02734 2018 10 26 58417 0.1844 0.3050 0.02605 2018 10 27 58418 0.1832 0.3041 0.02486 2018 10 28 58419 0.1820 0.3032 0.02377 2018 10 29 58420 0.1808 0.3023 0.02278 2018 10 30 58421 0.1795 0.3014 0.02182 2018 10 31 58422 0.1782 0.3006 0.02082 2018 11 1 58423 0.1769 0.2998 0.01972 2018 11 2 58424 0.1756 0.2990 0.01848 2018 11 3 58425 0.1743 0.2982 0.01706 2018 11 4 58426 0.1729 0.2974 0.01551 2018 11 5 58427 0.1715 0.2967 0.01388 2018 11 6 58428 0.1702 0.2960 0.01226 2018 11 7 58429 0.1688 0.2953 0.01072 2018 11 8 58430 0.1674 0.2946 0.00934 2018 11 9 58431 0.1659 0.2939 0.00815 2018 11 10 58432 0.1645 0.2933 0.00713 2018 11 11 58433 0.1631 0.2927 0.00627 2018 11 12 58434 0.1616 0.2921 0.00552 2018 11 13 58435 0.1601 0.2915 0.00482 2018 11 14 58436 0.1586 0.2910 0.00412 2018 11 15 58437 0.1572 0.2905 0.00337 2018 11 16 58438 0.1557 0.2900 0.00253 2018 11 17 58439 0.1541 0.2895 0.00158 2018 11 18 58440 0.1526 0.2890 0.00050 2018 11 19 58441 0.1511 0.2886 -0.00069 2018 11 20 58442 0.1495 0.2882 -0.00196 2018 11 21 58443 0.1480 0.2878 -0.00327 2018 11 22 58444 0.1464 0.2875 -0.00456 2018 11 23 58445 0.1449 0.2872 -0.00576 2018 11 24 58446 0.1433 0.2868 -0.00685 2018 11 25 58447 0.1417 0.2866 -0.00781 2018 11 26 58448 0.1402 0.2863 -0.00870 2018 11 27 58449 0.1386 0.2861 -0.00957 2018 11 28 58450 0.1370 0.2859 -0.01051 2018 11 29 58451 0.1354 0.2857 -0.01157 2018 11 30 58452 0.1338 0.2855 -0.01277 2018 12 1 58453 0.1322 0.2854 -0.01409 2018 12 2 58454 0.1306 0.2853 -0.01548 2018 12 3 58455 0.1290 0.2852 -0.01686 2018 12 4 58456 0.1274 0.2851 -0.01816 2018 12 5 58457 0.1257 0.2851 -0.01932 2018 12 6 58458 0.1241 0.2851 -0.02032 2018 12 7 58459 0.1225 0.2851 -0.02114 2018 12 8 58460 0.1209 0.2851 -0.02182 2018 12 9 58461 0.1193 0.2852 -0.02238 2018 12 10 58462 0.1177 0.2853 -0.02288 2018 12 11 58463 0.1161 0.2854 -0.02338 2018 12 12 58464 0.1145 0.2856 -0.02392 2018 12 13 58465 0.1129 0.2857 -0.02454 2018 12 14 58466 0.1113 0.2859 -0.02526 2018 12 15 58467 0.1097 0.2861 -0.02610 2018 12 16 58468 0.1081 0.2864 -0.02705 2018 12 17 58469 0.1065 0.2866 -0.02809 2018 12 18 58470 0.1049 0.2869 -0.02918 2018 12 19 58471 0.1034 0.2872 -0.03027 2018 12 20 58472 0.1018 0.2876 -0.03130 2018 12 21 58473 0.1002 0.2879 -0.03223 2018 12 22 58474 0.0987 0.2883 -0.03302 2018 12 23 58475 0.0971 0.2887 -0.03371 2018 12 24 58476 0.0956 0.2892 -0.03436 2018 12 25 58477 0.0941 0.2896 -0.03505 2018 12 26 58478 0.0926 0.2901 -0.03585 2018 12 27 58479 0.0911 0.2906 -0.03679 2018 12 28 58480 0.0896 0.2911 -0.03785 2018 12 29 58481 0.0881 0.2917 -0.03899 2018 12 30 58482 0.0866 0.2923 -0.04011 2018 12 31 58483 0.0851 0.2928 -0.04116 2019 1 1 58484 0.0837 0.2935 -0.04208 2019 1 2 58485 0.0822 0.2941 -0.04284 2019 1 3 58486 0.0808 0.2948 -0.04342 2019 1 4 58487 0.0794 0.2955 -0.04386 2019 1 5 58488 0.0780 0.2962 -0.04419 2019 1 6 58489 0.0766 0.2969 -0.04445 2019 1 7 58490 0.0752 0.2977 -0.04472 2019 1 8 58491 0.0739 0.2984 -0.04503 2019 1 9 58492 0.0725 0.2992 -0.04541 2019 1 10 58493 0.0712 0.3000 -0.04590 2019 1 11 58494 0.0699 0.3009 -0.04650 2019 1 12 58495 0.0686 0.3017 -0.04721 2019 1 13 58496 0.0673 0.3026 -0.04802 2019 1 14 58497 0.0660 0.3035 -0.04889 2019 1 15 58498 0.0648 0.3044 -0.04979 2019 1 16 58499 0.0636 0.3054 -0.05067 2019 1 17 58500 0.0624 0.3063 -0.05149 2019 1 18 58501 0.0612 0.3073 -0.05222 2019 1 19 58502 0.0600 0.3083 -0.05286 2019 1 20 58503 0.0589 0.3093 -0.05345 2019 1 21 58504 0.0577 0.3103 -0.05408 2019 1 22 58505 0.0566 0.3114 -0.05482 2019 1 23 58506 0.0556 0.3124 -0.05574 2019 1 24 58507 0.0545 0.3135 -0.05683 2019 1 25 58508 0.0535 0.3146 -0.05805 2019 1 26 58509 0.0524 0.3157 -0.05930 2019 1 27 58510 0.0514 0.3168 -0.06049 2019 1 28 58511 0.0505 0.3180 -0.06155 2019 1 29 58512 0.0495 0.3191 -0.06245 2019 1 30 58513 0.0486 0.3203 -0.06318 2019 1 31 58514 0.0477 0.3215 -0.06376 2019 2 1 58515 0.0468 0.3227 -0.06422 2019 2 2 58516 0.0459 0.3239 -0.06462 2019 2 3 58517 0.0451 0.3252 -0.06501 2019 2 4 58518 0.0443 0.3264 -0.06543 2019 2 5 58519 0.0435 0.3277 -0.06592 2019 2 6 58520 0.0427 0.3289 -0.06652 2019 2 7 58521 0.0420 0.3302 -0.06724 2019 2 8 58522 0.0413 0.3315 -0.06808 2019 2 9 58523 0.0406 0.3328 -0.06903 2019 2 10 58524 0.0399 0.3341 -0.07005 2019 2 11 58525 0.0393 0.3354 -0.07111 2019 2 12 58526 0.0387 0.3368 -0.07216 2019 2 13 58527 0.0381 0.3381 -0.07316 2019 2 14 58528 0.0376 0.3395 -0.07410 2019 2 15 58529 0.0370 0.3408 -0.07495 2019 2 16 58530 0.0365 0.3422 -0.07574 2019 2 17 58531 0.0361 0.3436 -0.07656 2019 2 18 58532 0.0356 0.3449 -0.07747 2019 2 19 58533 0.0352 0.3463 -0.07857 2019 2 20 58534 0.0348 0.3477 -0.07988 2019 2 21 58535 0.0344 0.3491 -0.08137 2019 2 22 58536 0.0341 0.3505 -0.08297 2019 2 23 58537 0.0338 0.3520 -0.08456 2019 2 24 58538 0.0335 0.3534 -0.08603 2019 2 25 58539 0.0333 0.3548 -0.08733 2019 2 26 58540 0.0331 0.3562 -0.08844 2019 2 27 58541 0.0329 0.3577 -0.08936 2019 2 28 58542 0.0327 0.3591 -0.09015 2019 3 1 58543 0.0326 0.3605 -0.09085 2019 3 2 58544 0.0324 0.3620 -0.09151 2019 3 3 58545 0.0324 0.3634 -0.09219 2019 3 4 58546 0.0323 0.3649 -0.09294 2019 3 5 58547 0.0323 0.3663 -0.09378 2019 3 6 58548 0.0323 0.3677 -0.09473 2019 3 7 58549 0.0323 0.3692 -0.09581 2019 3 8 58550 0.0324 0.3706 -0.09700 2019 3 9 58551 0.0325 0.3721 -0.09826 2019 3 10 58552 0.0326 0.3735 -0.09955 2019 3 11 58553 0.0328 0.3750 -0.10083 2019 3 12 58554 0.0329 0.3764 -0.10205 2019 3 13 58555 0.0331 0.3778 -0.10318 2019 3 14 58556 0.0334 0.3793 -0.10422 2019 3 15 58557 0.0336 0.3807 -0.10520 2019 3 16 58558 0.0339 0.3821 -0.10615 2019 3 17 58559 0.0342 0.3835 -0.10717 2019 3 18 58560 0.0346 0.3850 -0.10834 2019 3 19 58561 0.0350 0.3864 -0.10973 2019 3 20 58562 0.0354 0.3878 -0.11134 2019 3 21 58563 0.0358 0.3892 -0.11312 2019 3 22 58564 0.0363 0.3906 -0.11497 2019 3 23 58565 0.0367 0.3920 -0.11677 2019 3 24 58566 0.0373 0.3933 -0.11843 2019 3 25 58567 0.0378 0.3947 -0.11989 2019 3 26 58568 0.0384 0.3961 -0.12114 2019 3 27 58569 0.0390 0.3974 -0.12222 2019 3 28 58570 0.0396 0.3988 -0.12316 2019 3 29 58571 0.0402 0.4001 -0.12402 2019 3 30 58572 0.0409 0.4014 -0.12485 2019 3 31 58573 0.0416 0.4027 -0.12568 2019 4 1 58574 0.0423 0.4041 -0.12655 2019 4 2 58575 0.0431 0.4053 -0.12749 2019 4 3 58576 0.0439 0.4066 -0.12850 2019 4 4 58577 0.0447 0.4079 -0.12960 2019 4 5 58578 0.0455 0.4092 -0.13075 2019 4 6 58579 0.0463 0.4104 -0.13192 2019 4 7 58580 0.0472 0.4116 -0.13306 2019 4 8 58581 0.0481 0.4129 -0.13412 2019 4 9 58582 0.0491 0.4141 -0.13509 2019 4 10 58583 0.0500 0.4153 -0.13594 2019 4 11 58584 0.0510 0.4164 -0.13669 2019 4 12 58585 0.0520 0.4176 -0.13739 2019 4 13 58586 0.0530 0.4187 -0.13812 2019 4 14 58587 0.0540 0.4199 -0.13895 2019 4 15 58588 0.0551 0.4210 -0.13997 2019 4 16 58589 0.0562 0.4221 -0.14121 2019 4 17 58590 0.0573 0.4232 -0.14265 2019 4 18 58591 0.0584 0.4242 -0.14422 2019 4 19 58592 0.0596 0.4253 -0.14579 2019 4 20 58593 0.0608 0.4263 -0.14723 2019 4 21 58594 0.0619 0.4273 -0.14845 2019 4 22 58595 0.0632 0.4283 -0.14942 2019 4 23 58596 0.0644 0.4293 -0.15014 2019 4 24 58597 0.0656 0.4303 -0.15068 2019 4 25 58598 0.0669 0.4312 -0.15112 2019 4 26 58599 0.0682 0.4321 -0.15153 2019 4 27 58600 0.0695 0.4330 -0.15194 2019 4 28 58601 0.0708 0.4339 -0.15240 2019 4 29 58602 0.0722 0.4347 -0.15295 2019 4 30 58603 0.0735 0.4356 -0.15365 2019 5 1 58604 0.0749 0.4364 -0.15448 2019 5 2 58605 0.0763 0.4372 -0.15538 2019 5 3 58606 0.0777 0.4380 -0.15635 2019 5 4 58607 0.0791 0.4387 -0.15734 2019 5 5 58608 0.0806 0.4395 -0.15827 2019 5 6 58609 0.0820 0.4402 -0.15911 2019 5 7 58610 0.0835 0.4409 -0.15986 2019 5 8 58611 0.0850 0.4415 -0.16051 2019 5 9 58612 0.0864 0.4422 -0.16111 2019 5 10 58613 0.0880 0.4428 -0.16173 2019 5 11 58614 0.0895 0.4434 -0.16246 2019 5 12 58615 0.0910 0.4440 -0.16338 2019 5 13 58616 0.0925 0.4445 -0.16450 2019 5 14 58617 0.0941 0.4450 -0.16583 2019 5 15 58618 0.0956 0.4455 -0.16727 2019 5 16 58619 0.0972 0.4460 -0.16873 2019 5 17 58620 0.0988 0.4465 -0.17016 2019 5 18 58621 0.1004 0.4469 -0.17153 2019 5 19 58622 0.1020 0.4473 -0.17273 2019 5 20 58623 0.1036 0.4477 -0.17373 2019 5 21 58624 0.1052 0.4480 -0.17459 2019 5 22 58625 0.1068 0.4484 -0.17534 2019 5 23 58626 0.1084 0.4487 -0.17599 2019 5 24 58627 0.1101 0.4490 -0.17658 2019 5 25 58628 0.1117 0.4492 -0.17711 2019 5 26 58629 0.1134 0.4494 -0.17768 2019 5 27 58630 0.1150 0.4496 -0.17832 2019 5 28 58631 0.1166 0.4498 -0.17895 2019 5 29 58632 0.1183 0.4500 -0.17962 2019 5 30 58633 0.1200 0.4501 -0.18027 2019 5 31 58634 0.1216 0.4502 -0.18091 2019 6 1 58635 0.1233 0.4503 -0.18148 2019 6 2 58636 0.1249 0.4504 -0.18188 2019 6 3 58637 0.1266 0.4504 -0.18214 2019 6 4 58638 0.1283 0.4504 -0.18221 2019 6 5 58639 0.1299 0.4504 -0.18214 2019 6 6 58640 0.1316 0.4503 -0.18199 2019 6 7 58641 0.1332 0.4502 -0.18183 2019 6 8 58642 0.1349 0.4501 -0.18174 2019 6 9 58643 0.1366 0.4500 -0.18186 2019 6 10 58644 0.1382 0.4499 -0.18214 2019 6 11 58645 0.1399 0.4497 -0.18247 2019 6 12 58646 0.1415 0.4495 -0.18285 2019 6 13 58647 0.1432 0.4493 -0.18315 2019 6 14 58648 0.1448 0.4490 -0.18336 2019 6 15 58649 0.1464 0.4487 -0.18341 2019 6 16 58650 0.1481 0.4484 -0.18320 2019 6 17 58651 0.1497 0.4481 -0.18279 2019 6 18 58652 0.1513 0.4477 -0.18227 2019 6 19 58653 0.1529 0.4474 -0.18175 2019 6 20 58654 0.1545 0.4470 -0.18125 2019 6 21 58655 0.1561 0.4465 -0.18085 2019 6 22 58656 0.1577 0.4461 -0.18058 2019 6 23 58657 0.1593 0.4456 -0.18044 2019 6 24 58658 0.1608 0.4451 -0.18038 2019 6 25 58659 0.1624 0.4446 -0.18044 2019 6 26 58660 0.1639 0.4440 -0.18060 2019 6 27 58661 0.1655 0.4435 -0.18081 2019 6 28 58662 0.1670 0.4429 -0.18096 2019 6 29 58663 0.1685 0.4423 -0.18108 2019 6 30 58664 0.1700 0.4416 -0.18111 2019 7 1 58665 0.1715 0.4410 -0.18099 2019 7 2 58666 0.1729 0.4403 -0.18077 2019 7 3 58667 0.1744 0.4396 -0.18052 2019 7 4 58668 0.1758 0.4388 -0.18029 2019 7 5 58669 0.1773 0.4381 -0.18015 2019 7 6 58670 0.1787 0.4373 -0.18021 2019 7 7 58671 0.1801 0.4365 -0.18052 2019 7 8 58672 0.1815 0.4357 -0.18093 2019 7 9 58673 0.1828 0.4348 -0.18139 2019 7 10 58674 0.1842 0.4340 -0.18184 2019 7 11 58675 0.1855 0.4331 -0.18218 2019 7 12 58676 0.1868 0.4322 -0.18235 2019 7 13 58677 0.1881 0.4313 -0.18242 2019 7 14 58678 0.1894 0.4303 -0.18234 2019 7 15 58679 0.1906 0.4293 -0.18217 2019 7 16 58680 0.1919 0.4284 -0.18194 2019 7 17 58681 0.1931 0.4274 -0.18171 2019 7 18 58682 0.1943 0.4263 -0.18150 2019 7 19 58683 0.1955 0.4253 -0.18134 2019 7 20 58684 0.1966 0.4242 -0.18127 2019 7 21 58685 0.1977 0.4232 -0.18133 2019 7 22 58686 0.1989 0.4221 -0.18146 2019 7 23 58687 0.1999 0.4210 -0.18162 2019 7 24 58688 0.2010 0.4198 -0.18178 2019 7 25 58689 0.2021 0.4187 -0.18195 2019 7 26 58690 0.2031 0.4175 -0.18210 2019 7 27 58691 0.2041 0.4164 -0.18213 2019 7 28 58692 0.2051 0.4152 -0.18206 2019 7 29 58693 0.2060 0.4140 -0.18189 2019 7 30 58694 0.2069 0.4127 -0.18159 2019 7 31 58695 0.2078 0.4115 -0.18124 2019 8 1 58696 0.2087 0.4103 -0.18096 2019 8 2 58697 0.2096 0.4090 -0.18091 2019 8 3 58698 0.2104 0.4077 -0.18112 2019 8 4 58699 0.2112 0.4064 -0.18151 2019 8 5 58700 0.2120 0.4051 -0.18199 2019 8 6 58701 0.2127 0.4038 -0.18247 2019 8 7 58702 0.2134 0.4025 -0.18292 2019 8 8 58703 0.2141 0.4012 -0.18327 2019 8 9 58704 0.2148 0.3998 -0.18341 2019 8 10 58705 0.2154 0.3985 -0.18337 2019 8 11 58706 0.2161 0.3971 -0.18324 2019 8 12 58707 0.2166 0.3957 -0.18306 2019 8 13 58708 0.2172 0.3943 -0.18285 2019 8 14 58709 0.2177 0.3929 -0.18264 2019 8 15 58710 0.2182 0.3915 -0.18245 2019 8 16 58711 0.2187 0.3901 -0.18233 2019 8 17 58712 0.2192 0.3887 -0.18230 2019 8 18 58713 0.2196 0.3873 -0.18238 2019 8 19 58714 0.2200 0.3858 -0.18250 2019 8 20 58715 0.2203 0.3844 -0.18269 2019 8 21 58716 0.2207 0.3830 -0.18293 2019 8 22 58717 0.2210 0.3815 -0.18316 2019 8 23 58718 0.2212 0.3801 -0.18335 2019 8 24 58719 0.2215 0.3786 -0.18344 2019 8 25 58720 0.2217 0.3772 -0.18344 2019 8 26 58721 0.2219 0.3757 -0.18340 2019 8 27 58722 0.2220 0.3742 -0.18335 2019 8 28 58723 0.2222 0.3728 -0.18343 2019 8 29 58724 0.2223 0.3713 -0.18371 2019 8 30 58725 0.2223 0.3698 -0.18423 2019 8 31 58726 0.2224 0.3683 -0.18504 2019 9 1 58727 0.2224 0.3669 -0.18605 2019 9 2 58728 0.2224 0.3654 -0.18713 2019 9 3 58729 0.2223 0.3639 -0.18821 2019 9 4 58730 0.2222 0.3624 -0.18916 2019 9 5 58731 0.2221 0.3610 -0.18985 2019 9 6 58732 0.2220 0.3595 -0.19032 2019 9 7 58733 0.2218 0.3580 -0.19063 2019 9 8 58734 0.2216 0.3566 -0.19080 2019 9 9 58735 0.2214 0.3551 -0.19089 2019 9 10 58736 0.2211 0.3536 -0.19097 2019 9 11 58737 0.2208 0.3522 -0.19103 2019 9 12 58738 0.2205 0.3507 -0.19117 2019 9 13 58739 0.2202 0.3493 -0.19144 2019 9 14 58740 0.2198 0.3479 -0.19177 2019 9 15 58741 0.2194 0.3464 -0.19220 2019 9 16 58742 0.2189 0.3450 -0.19267 2019 9 17 58743 0.2185 0.3436 -0.19319 2019 9 18 58744 0.2180 0.3422 -0.19371 2019 9 19 58745 0.2175 0.3408 -0.19417 2019 9 20 58746 0.2169 0.3394 -0.19453 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) 58355 -114.89 0.05 -11.63 0.24 58356 -114.86 0.04 -11.43 0.22 58357 -114.87 0.04 -11.27 0.22 58358 -114.92 0.03 -11.21 0.20 58359 -115.00 0.11 -11.23 0.15 58360 -115.06 0.11 -11.25 0.15 58361 -115.12 0.11 -11.26 0.15 58362 -115.26 0.12 -11.28 0.13 58363 -115.52 0.11 -11.32 0.15 58364 -115.81 0.11 -11.38 0.15 58365 -115.95 0.00 -11.46 0.22 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58355 -0.019 0.020 0.201 0.236 58356 -0.022 0.018 0.190 0.222 58357 -0.027 0.018 0.177 0.222 58358 -0.035 0.010 0.164 0.195 58359 -0.043 0.045 0.151 0.149 58360 -0.050 0.045 0.140 0.149 58361 -0.054 0.045 0.134 0.149 58362 -0.054 0.048 0.136 0.132 58363 -0.050 0.045 0.145 0.153 58364 -0.043 0.045 0.159 0.153 58365 -0.034 0.008 0.175 0.215 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).