********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 30 August 2018 Vol. XXXI No. 035 ______________________________________________________________________ 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 8 24 58354 0.20921 .00009 0.37719 .00009 0.065105 0.000031 18 8 25 58355 0.20977 .00009 0.37602 .00009 0.065259 0.000037 18 8 26 58356 0.21043 .00009 0.37494 .00009 0.065274 0.000042 18 8 27 58357 0.21094 .00009 0.37385 .00009 0.065119 0.000017 18 8 28 58358 0.21120 .00009 0.37278 .00009 0.064822 0.000016 18 8 29 58359 0.21132 .00009 0.37166 .00009 0.064466 0.000016 18 8 30 58360 0.21151 .00009 0.37051 .00009 0.064093 0.000015 _______________________________________________________________________ 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 = 0.1149 + 0.1075 cos A - 0.0130 sin A - 0.0079 cos C + 0.0184 sin C y = 0.3561 - 0.0074 cos A - 0.1033 sin A + 0.0184 cos C + 0.0079 sin C UT1-UTC = 0.0275 - 0.00068 (MJD - 58368) - (UT2-UT1) where A = 2*pi*(MJD-58360)/365.25 and C = 2*pi*(MJD-58360)/435. TAI-UTC(MJD 58361) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58360)**0.80 S t = 0.00025 (MJD-58360)**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 8 31 58361 0.2116 0.3693 0.06364 2018 9 1 58362 0.2118 0.3681 0.06320 2018 9 2 58363 0.2119 0.3668 0.06283 2018 9 3 58364 0.2119 0.3656 0.06257 2018 9 4 58365 0.2119 0.3643 0.06239 2018 9 5 58366 0.2118 0.3630 0.06227 2018 9 6 58367 0.2117 0.3618 0.06216 2018 9 7 58368 0.2115 0.3605 0.06197 2018 9 8 58369 0.2114 0.3591 0.06161 2018 9 9 58370 0.2113 0.3578 0.06102 2018 9 10 58371 0.2112 0.3565 0.06024 2018 9 11 58372 0.2110 0.3552 0.05933 2018 9 12 58373 0.2108 0.3538 0.05841 2018 9 13 58374 0.2106 0.3525 0.05754 2018 9 14 58375 0.2104 0.3512 0.05681 2018 9 15 58376 0.2101 0.3499 0.05622 2018 9 16 58377 0.2098 0.3486 0.05577 2018 9 17 58378 0.2095 0.3472 0.05542 2018 9 18 58379 0.2091 0.3459 0.05514 2018 9 19 58380 0.2087 0.3447 0.05486 2018 9 20 58381 0.2083 0.3434 0.05455 2018 9 21 58382 0.2079 0.3421 0.05413 2018 9 22 58383 0.2074 0.3408 0.05360 2018 9 23 58384 0.2069 0.3395 0.05292 2018 9 24 58385 0.2063 0.3382 0.05209 2018 9 25 58386 0.2058 0.3370 0.05112 2018 9 26 58387 0.2052 0.3357 0.05004 2018 9 27 58388 0.2045 0.3345 0.04890 2018 9 28 58389 0.2039 0.3332 0.04775 2018 9 29 58390 0.2032 0.3320 0.04664 2018 9 30 58391 0.2025 0.3308 0.04560 2018 10 1 58392 0.2018 0.3296 0.04465 2018 10 2 58393 0.2010 0.3284 0.04375 2018 10 3 58394 0.2002 0.3272 0.04286 2018 10 4 58395 0.1994 0.3260 0.04191 2018 10 5 58396 0.1986 0.3248 0.04083 2018 10 6 58397 0.1977 0.3236 0.03958 2018 10 7 58398 0.1969 0.3225 0.03814 2018 10 8 58399 0.1960 0.3214 0.03658 2018 10 9 58400 0.1950 0.3202 0.03498 2018 10 10 58401 0.1941 0.3191 0.03345 2018 10 11 58402 0.1931 0.3180 0.03206 2018 10 12 58403 0.1921 0.3169 0.03086 2018 10 13 58404 0.1911 0.3159 0.02985 2018 10 14 58405 0.1901 0.3148 0.02900 2018 10 15 58406 0.1890 0.3138 0.02828 2018 10 16 58407 0.1880 0.3128 0.02763 2018 10 17 58408 0.1869 0.3118 0.02698 2018 10 18 58409 0.1857 0.3108 0.02628 2018 10 19 58410 0.1846 0.3098 0.02550 2018 10 20 58411 0.1834 0.3088 0.02458 2018 10 21 58412 0.1823 0.3079 0.02353 2018 10 22 58413 0.1811 0.3070 0.02234 2018 10 23 58414 0.1798 0.3061 0.02103 2018 10 24 58415 0.1786 0.3052 0.01965 2018 10 25 58416 0.1773 0.3043 0.01825 2018 10 26 58417 0.1761 0.3035 0.01689 2018 10 27 58418 0.1748 0.3027 0.01564 2018 10 28 58419 0.1735 0.3019 0.01450 2018 10 29 58420 0.1721 0.3011 0.01347 2018 10 30 58421 0.1708 0.3003 0.01248 2018 10 31 58422 0.1694 0.2996 0.01148 2018 11 1 58423 0.1681 0.2988 0.01039 2018 11 2 58424 0.1667 0.2981 0.00916 2018 11 3 58425 0.1653 0.2974 0.00778 2018 11 4 58426 0.1639 0.2968 0.00628 2018 11 5 58427 0.1624 0.2961 0.00471 2018 11 6 58428 0.1610 0.2955 0.00315 2018 11 7 58429 0.1595 0.2949 0.00168 2018 11 8 58430 0.1581 0.2943 0.00037 2018 11 9 58431 0.1566 0.2938 -0.00078 2018 11 10 58432 0.1551 0.2933 -0.00175 2018 11 11 58433 0.1536 0.2927 -0.00258 2018 11 12 58434 0.1521 0.2923 -0.00332 2018 11 13 58435 0.1506 0.2918 -0.00403 2018 11 14 58436 0.1490 0.2914 -0.00475 2018 11 15 58437 0.1475 0.2909 -0.00553 2018 11 16 58438 0.1460 0.2905 -0.00640 2018 11 17 58439 0.1444 0.2902 -0.00738 2018 11 18 58440 0.1428 0.2898 -0.00848 2018 11 19 58441 0.1413 0.2895 -0.00969 2018 11 20 58442 0.1397 0.2892 -0.01096 2018 11 21 58443 0.1381 0.2889 -0.01226 2018 11 22 58444 0.1365 0.2887 -0.01352 2018 11 23 58445 0.1349 0.2885 -0.01468 2018 11 24 58446 0.1333 0.2883 -0.01572 2018 11 25 58447 0.1317 0.2881 -0.01661 2018 11 26 58448 0.1301 0.2879 -0.01742 2018 11 27 58449 0.1285 0.2878 -0.01820 2018 11 28 58450 0.1269 0.2877 -0.01904 2018 11 29 58451 0.1253 0.2876 -0.01998 2018 11 30 58452 0.1236 0.2876 -0.02106 2018 12 1 58453 0.1220 0.2875 -0.02225 2018 12 2 58454 0.1204 0.2875 -0.02350 2018 12 3 58455 0.1188 0.2875 -0.02474 2018 12 4 58456 0.1172 0.2876 -0.02591 2018 12 5 58457 0.1155 0.2877 -0.02694 2018 12 6 58458 0.1139 0.2877 -0.02780 2018 12 7 58459 0.1123 0.2879 -0.02850 2018 12 8 58460 0.1107 0.2880 -0.02904 2018 12 9 58461 0.1091 0.2882 -0.02948 2018 12 10 58462 0.1075 0.2884 -0.02984 2018 12 11 58463 0.1059 0.2886 -0.03020 2018 12 12 58464 0.1043 0.2888 -0.03059 2018 12 13 58465 0.1027 0.2891 -0.03105 2018 12 14 58466 0.1011 0.2894 -0.03162 2018 12 15 58467 0.0995 0.2897 -0.03231 2018 12 16 58468 0.0979 0.2900 -0.03310 2018 12 17 58469 0.0963 0.2904 -0.03405 2018 12 18 58470 0.0948 0.2908 -0.03505 2018 12 19 58471 0.0932 0.2912 -0.03606 2018 12 20 58472 0.0917 0.2916 -0.03702 2018 12 21 58473 0.0901 0.2921 -0.03789 2018 12 22 58474 0.0886 0.2926 -0.03863 2018 12 23 58475 0.0871 0.2931 -0.03928 2018 12 24 58476 0.0856 0.2936 -0.03989 2018 12 25 58477 0.0841 0.2941 -0.04055 2018 12 26 58478 0.0826 0.2947 -0.04133 2018 12 27 58479 0.0811 0.2953 -0.04225 2018 12 28 58480 0.0796 0.2959 -0.04331 2018 12 29 58481 0.0782 0.2966 -0.04445 2018 12 30 58482 0.0767 0.2972 -0.04559 2018 12 31 58483 0.0753 0.2979 -0.04665 2019 1 1 58484 0.0739 0.2986 -0.04760 2019 1 2 58485 0.0725 0.2994 -0.04838 2019 1 3 58486 0.0711 0.3001 -0.04901 2019 1 4 58487 0.0697 0.3009 -0.04949 2019 1 5 58488 0.0684 0.3017 -0.04987 2019 1 6 58489 0.0670 0.3025 -0.05018 2019 1 7 58490 0.0657 0.3034 -0.05047 2019 1 8 58491 0.0644 0.3042 -0.05080 2019 1 9 58492 0.0631 0.3051 -0.05120 2019 1 10 58493 0.0618 0.3060 -0.05171 2019 1 11 58494 0.0606 0.3069 -0.05233 2019 1 12 58495 0.0593 0.3078 -0.05306 2019 1 13 58496 0.0581 0.3088 -0.05389 2019 1 14 58497 0.0569 0.3098 -0.05478 2019 1 15 58498 0.0557 0.3108 -0.05569 2019 1 16 58499 0.0546 0.3118 -0.05659 2019 1 17 58500 0.0534 0.3128 -0.05742 2019 1 18 58501 0.0523 0.3138 -0.05815 2019 1 19 58502 0.0512 0.3149 -0.05880 2019 1 20 58503 0.0501 0.3160 -0.05940 2019 1 21 58504 0.0491 0.3171 -0.06003 2019 1 22 58505 0.0480 0.3182 -0.06077 2019 1 23 58506 0.0470 0.3193 -0.06169 2019 1 24 58507 0.0460 0.3205 -0.06279 2019 1 25 58508 0.0451 0.3216 -0.06400 2019 1 26 58509 0.0441 0.3228 -0.06524 2019 1 27 58510 0.0432 0.3240 -0.06642 2019 1 28 58511 0.0423 0.3252 -0.06747 2019 1 29 58512 0.0414 0.3264 -0.06835 2019 1 30 58513 0.0406 0.3277 -0.06906 2019 1 31 58514 0.0398 0.3289 -0.06962 2019 2 1 58515 0.0390 0.3302 -0.07006 2019 2 2 58516 0.0382 0.3314 -0.07043 2019 2 3 58517 0.0374 0.3327 -0.07078 2019 2 4 58518 0.0367 0.3340 -0.07116 2019 2 5 58519 0.0360 0.3353 -0.07162 2019 2 6 58520 0.0354 0.3366 -0.07218 2019 2 7 58521 0.0347 0.3380 -0.07286 2019 2 8 58522 0.0341 0.3393 -0.07366 2019 2 9 58523 0.0335 0.3407 -0.07456 2019 2 10 58524 0.0329 0.3420 -0.07553 2019 2 11 58525 0.0324 0.3434 -0.07653 2019 2 12 58526 0.0319 0.3448 -0.07753 2019 2 13 58527 0.0314 0.3461 -0.07848 2019 2 14 58528 0.0310 0.3475 -0.07935 2019 2 15 58529 0.0305 0.3489 -0.08014 2019 2 16 58530 0.0301 0.3503 -0.08088 2019 2 17 58531 0.0298 0.3518 -0.08164 2019 2 18 58532 0.0294 0.3532 -0.08250 2019 2 19 58533 0.0291 0.3546 -0.08354 2019 2 20 58534 0.0288 0.3560 -0.08480 2019 2 21 58535 0.0285 0.3575 -0.08624 2019 2 22 58536 0.0283 0.3589 -0.08780 2019 2 23 58537 0.0281 0.3603 -0.08935 2019 2 24 58538 0.0279 0.3618 -0.09079 2019 2 25 58539 0.0278 0.3632 -0.09205 2019 2 26 58540 0.0277 0.3647 -0.09313 2019 2 27 58541 0.0276 0.3661 -0.09403 2019 2 28 58542 0.0275 0.3676 -0.09478 2019 3 1 58543 0.0275 0.3690 -0.09545 2019 3 2 58544 0.0275 0.3705 -0.09607 2019 3 3 58545 0.0275 0.3720 -0.09670 2019 3 4 58546 0.0276 0.3734 -0.09737 2019 3 5 58547 0.0277 0.3749 -0.09812 2019 3 6 58548 0.0278 0.3763 -0.09895 2019 3 7 58549 0.0280 0.3778 -0.09987 2019 3 8 58550 0.0281 0.3792 -0.10085 2019 3 9 58551 0.0283 0.3807 -0.10186 2019 3 10 58552 0.0286 0.3821 -0.10286 2019 3 11 58553 0.0288 0.3836 -0.10381 2019 3 12 58554 0.0291 0.3850 -0.10467 2019 3 13 58555 0.0294 0.3865 -0.10544 2019 3 14 58556 0.0298 0.3879 -0.10611 2019 3 15 58557 0.0302 0.3893 -0.10672 2019 3 16 58558 0.0306 0.3907 -0.10733 2019 3 17 58559 0.0310 0.3922 -0.10802 2019 3 18 58560 0.0315 0.3936 -0.10887 2019 3 19 58561 0.0319 0.3950 -0.10996 2019 3 20 58562 0.0325 0.3964 -0.11129 2019 3 21 58563 0.0330 0.3978 -0.11279 2019 3 22 58564 0.0336 0.3991 -0.11438 2019 3 23 58565 0.0342 0.4005 -0.11592 2019 3 24 58566 0.0348 0.4019 -0.11734 2019 3 25 58567 0.0355 0.4032 -0.11858 2019 3 26 58568 0.0361 0.4046 -0.11964 2019 3 27 58569 0.0369 0.4059 -0.12057 2019 3 28 58570 0.0376 0.4073 -0.12142 2019 3 29 58571 0.0383 0.4086 -0.12225 2019 3 30 58572 0.0391 0.4099 -0.12311 2019 3 31 58573 0.0399 0.4112 -0.12408 2019 4 1 58574 0.0408 0.4124 -0.12518 2019 4 2 58575 0.0416 0.4137 -0.12642 2019 4 3 58576 0.0425 0.4150 -0.12781 2019 4 4 58577 0.0435 0.4162 -0.12932 2019 4 5 58578 0.0444 0.4174 -0.13094 2019 4 6 58579 0.0454 0.4187 -0.13265 2019 4 7 58580 0.0463 0.4199 -0.13440 2019 4 8 58581 0.0474 0.4210 -0.13612 2019 4 9 58582 0.0484 0.4222 -0.13777 2019 4 10 58583 0.0494 0.4234 -0.13932 2019 4 11 58584 0.0505 0.4245 -0.14077 2019 4 12 58585 0.0516 0.4256 -0.14211 2019 4 13 58586 0.0528 0.4267 -0.14337 2019 4 14 58587 0.0539 0.4278 -0.14469 2019 4 15 58588 0.0551 0.4289 -0.14616 2019 4 16 58589 0.0563 0.4299 -0.14773 2019 4 17 58590 0.0575 0.4310 -0.14944 2019 4 18 58591 0.0587 0.4320 -0.15118 2019 4 19 58592 0.0600 0.4330 -0.15290 2019 4 20 58593 0.0612 0.4340 -0.15449 2019 4 21 58594 0.0625 0.4350 -0.15581 2019 4 22 58595 0.0638 0.4359 -0.15688 2019 4 23 58596 0.0652 0.4368 -0.15770 2019 4 24 58597 0.0665 0.4377 -0.15833 2019 4 25 58598 0.0679 0.4386 -0.15882 2019 4 26 58599 0.0693 0.4395 -0.15922 2019 4 27 58600 0.0707 0.4403 -0.15960 2019 4 28 58601 0.0721 0.4411 -0.16008 2019 4 29 58602 0.0735 0.4419 -0.16067 2019 4 30 58603 0.0750 0.4427 -0.16129 2019 5 1 58604 0.0764 0.4435 -0.16203 2019 5 2 58605 0.0779 0.4442 -0.16281 2019 5 3 58606 0.0794 0.4449 -0.16366 2019 5 4 58607 0.0809 0.4456 -0.16454 2019 5 5 58608 0.0824 0.4463 -0.16529 2019 5 6 58609 0.0840 0.4469 -0.16594 2019 5 7 58610 0.0855 0.4475 -0.16648 2019 5 8 58611 0.0871 0.4481 -0.16698 2019 5 9 58612 0.0887 0.4487 -0.16743 2019 5 10 58613 0.0902 0.4493 -0.16794 2019 5 11 58614 0.0918 0.4498 -0.16857 2019 5 12 58615 0.0934 0.4503 -0.16936 2019 5 13 58616 0.0951 0.4508 -0.17029 2019 5 14 58617 0.0967 0.4512 -0.17142 2019 5 15 58618 0.0983 0.4517 -0.17271 2019 5 16 58619 0.1000 0.4521 -0.17404 2019 5 17 58620 0.1016 0.4524 -0.17526 2019 5 18 58621 0.1033 0.4528 -0.17635 2019 5 19 58622 0.1049 0.4531 -0.17723 2019 5 20 58623 0.1066 0.4534 -0.17788 2019 5 21 58624 0.1083 0.4537 -0.17834 2019 5 22 58625 0.1100 0.4540 -0.17870 2019 5 23 58626 0.1116 0.4542 -0.17898 2019 5 24 58627 0.1133 0.4544 -0.17923 2019 5 25 58628 0.1150 0.4546 -0.17955 2019 5 26 58629 0.1167 0.4547 -0.18001 2019 5 27 58630 0.1184 0.4548 -0.18053 2019 5 28 58631 0.1201 0.4549 -0.18114 2019 5 29 58632 0.1218 0.4550 -0.18185 2019 5 30 58633 0.1235 0.4551 -0.18262 2019 5 31 58634 0.1252 0.4551 -0.18340 2019 6 1 58635 0.1270 0.4551 -0.18423 2019 6 2 58636 0.1287 0.4551 -0.18500 2019 6 3 58637 0.1304 0.4550 -0.18570 2019 6 4 58638 0.1321 0.4549 -0.18627 2019 6 5 58639 0.1338 0.4548 -0.18676 2019 6 6 58640 0.1355 0.4547 -0.18721 2019 6 7 58641 0.1372 0.4545 -0.18765 2019 6 8 58642 0.1389 0.4543 -0.18821 2019 6 9 58643 0.1406 0.4541 -0.18893 2019 6 10 58644 0.1423 0.4539 -0.18976 2019 6 11 58645 0.1439 0.4536 -0.19066 2019 6 12 58646 0.1456 0.4533 -0.19155 2019 6 13 58647 0.1473 0.4530 -0.19238 2019 6 14 58648 0.1489 0.4527 -0.19310 2019 6 15 58649 0.1506 0.4523 -0.19358 2019 6 16 58650 0.1523 0.4519 -0.19385 2019 6 17 58651 0.1539 0.4515 -0.19391 2019 6 18 58652 0.1555 0.4511 -0.19377 2019 6 19 58653 0.1572 0.4506 -0.19348 2019 6 20 58654 0.1588 0.4501 -0.19313 2019 6 21 58655 0.1604 0.4496 -0.19285 2019 6 22 58656 0.1620 0.4490 -0.19267 2019 6 23 58657 0.1636 0.4485 -0.19257 2019 6 24 58658 0.1651 0.4479 -0.19254 2019 6 25 58659 0.1667 0.4473 -0.19261 2019 6 26 58660 0.1682 0.4466 -0.19280 2019 6 27 58661 0.1698 0.4460 -0.19310 2019 6 28 58662 0.1713 0.4453 -0.19337 2019 6 29 58663 0.1728 0.4446 -0.19360 2019 6 30 58664 0.1743 0.4439 -0.19377 2019 7 1 58665 0.1758 0.4431 -0.19385 2019 7 2 58666 0.1772 0.4423 -0.19382 2019 7 3 58667 0.1787 0.4415 -0.19369 2019 7 4 58668 0.1801 0.4407 -0.19354 2019 7 5 58669 0.1815 0.4399 -0.19345 2019 7 6 58670 0.1829 0.4390 -0.19350 2019 7 7 58671 0.1843 0.4381 -0.19371 2019 7 8 58672 0.1857 0.4372 -0.19400 2019 7 9 58673 0.1870 0.4363 -0.19435 2019 7 10 58674 0.1884 0.4353 -0.19468 2019 7 11 58675 0.1897 0.4344 -0.19491 2019 7 12 58676 0.1910 0.4334 -0.19497 2019 7 13 58677 0.1922 0.4324 -0.19481 2019 7 14 58678 0.1935 0.4313 -0.19446 2019 7 15 58679 0.1947 0.4303 -0.19400 2019 7 16 58680 0.1959 0.4292 -0.19344 2019 7 17 58681 0.1971 0.4281 -0.19291 2019 7 18 58682 0.1983 0.4270 -0.19243 2019 7 19 58683 0.1994 0.4259 -0.19201 2019 7 20 58684 0.2005 0.4248 -0.19174 2019 7 21 58685 0.2016 0.4236 -0.19158 2019 7 22 58686 0.2027 0.4225 -0.19152 2019 7 23 58687 0.2037 0.4213 -0.19160 2019 7 24 58688 0.2048 0.4201 -0.19176 2019 7 25 58689 0.2058 0.4188 -0.19187 2019 7 26 58690 0.2067 0.4176 -0.19195 2019 7 27 58691 0.2077 0.4163 -0.19198 2019 7 28 58692 0.2086 0.4151 -0.19187 2019 7 29 58693 0.2095 0.4138 -0.19164 2019 7 30 58694 0.2104 0.4125 -0.19130 2019 7 31 58695 0.2112 0.4112 -0.19090 2019 8 1 58696 0.2120 0.4099 -0.19056 2019 8 2 58697 0.2128 0.4085 -0.19039 2019 8 3 58698 0.2136 0.4072 -0.19040 2019 8 4 58699 0.2143 0.4058 -0.19059 2019 8 5 58700 0.2151 0.4044 -0.19085 2019 8 6 58701 0.2157 0.4031 -0.19113 2019 8 7 58702 0.2164 0.4017 -0.19131 2019 8 8 58703 0.2170 0.4003 -0.19132 2019 8 9 58704 0.2176 0.3989 -0.19110 2019 8 10 58705 0.2182 0.3974 -0.19073 2019 8 11 58706 0.2187 0.3960 -0.19021 2019 8 12 58707 0.2193 0.3946 -0.18960 2019 8 13 58708 0.2198 0.3931 -0.18901 2019 8 14 58709 0.2202 0.3916 -0.18851 2019 8 15 58710 0.2206 0.3902 -0.18821 2019 8 16 58711 0.2210 0.3887 -0.18808 2019 8 17 58712 0.2214 0.3872 -0.18809 2019 8 18 58713 0.2217 0.3857 -0.18815 2019 8 19 58714 0.2220 0.3843 -0.18828 2019 8 20 58715 0.2223 0.3828 -0.18845 2019 8 21 58716 0.2226 0.3813 -0.18869 2019 8 22 58717 0.2228 0.3798 -0.18895 2019 8 23 58718 0.2230 0.3783 -0.18917 2019 8 24 58719 0.2231 0.3767 -0.18936 2019 8 25 58720 0.2233 0.3752 -0.18947 2019 8 26 58721 0.2234 0.3737 -0.18958 2019 8 27 58722 0.2234 0.3722 -0.18972 2019 8 28 58723 0.2235 0.3707 -0.18990 2019 8 29 58724 0.2235 0.3692 -0.19022 2019 8 30 58725 0.2234 0.3676 -0.19070 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) 58338 -114.68 0.24 -11.74 0.09 58339 -114.71 0.24 -11.82 0.09 58340 -114.66 0.24 -11.80 0.09 58341 -114.50 0.17 -11.65 0.09 58342 -114.35 0.57 -11.51 0.07 58343 -114.35 0.57 -11.54 0.07 58344 -114.62 0.76 -11.62 0.03 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58338 -0.122 0.095 0.038 0.093 58339 -0.136 0.095 0.054 0.093 58340 -0.154 0.095 0.064 0.093 58341 -0.177 0.067 0.068 0.086 58342 -0.203 0.228 0.067 0.069 58343 -0.232 0.228 0.062 0.069 58344 -0.261 0.302 0.056 0.026 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).