********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 10 May 2018 Vol. XXXI No. 019 ______________________________________________________________________ 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 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 * * * * As of Bulletin A Vol. XXXI, No. 019, on 10 May 2018, we have * * updated the IAA VLBI solution systematic corrections. * * The effect appears to be less than 0.1 mas in polar motion * * and 10 us in UT1-UTC. * * * * If you wish to be a contributor to the IERS Conventions future * * editions, please go to the following web sites for more details: * * http://maia.usno.navy.mil/conventions/announcements/ * * call-for-contributors.php * * http://iers-conventions.obspm.fr/announcements/ * * call-for-contributors.php * * * * 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 5 4 58242 0.07145 .00009 0.43983 .00009 0.098984 0.000012 18 5 5 58243 0.07235 .00009 0.44037 .00009 0.098284 0.000011 18 5 6 58244 0.07329 .00009 0.44110 .00009 0.097606 0.000010 18 5 7 58245 0.07429 .00009 0.44194 .00009 0.096961 0.000010 18 5 8 58246 0.07540 .00009 0.44282 .00009 0.096295 0.000011 18 5 9 58247 0.07661 .00009 0.44375 .00009 0.095512 0.000010 18 5 10 58248 0.07785 .00009 0.44464 .00009 0.094621 0.000010 _______________________________________________________________________ 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 = 0.1103 - 0.0535 cos A + 0.1366 sin A + 0.0198 cos C - 0.0272 sin C y = 0.3424 + 0.1279 cos A + 0.0545 sin A - 0.0272 cos C - 0.0198 sin C UT1-UTC = 0.1380 - 0.00079 (MJD - 58256) - (UT2-UT1) where A = 2*pi*(MJD-58248)/365.25 and C = 2*pi*(MJD-58248)/435. TAI-UTC(MJD 58249) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58248)**0.80 S t = 0.00025 (MJD-58248)**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 5 11 58249 0.0792 0.4454 0.09365 2018 5 12 58250 0.0805 0.4461 0.09258 2018 5 13 58251 0.0820 0.4467 0.09147 2018 5 14 58252 0.0835 0.4472 0.09037 2018 5 15 58253 0.0850 0.4478 0.08936 2018 5 16 58254 0.0866 0.4483 0.08851 2018 5 17 58255 0.0881 0.4487 0.08784 2018 5 18 58256 0.0897 0.4491 0.08730 2018 5 19 58257 0.0913 0.4495 0.08685 2018 5 20 58258 0.0928 0.4499 0.08638 2018 5 21 58259 0.0944 0.4502 0.08581 2018 5 22 58260 0.0960 0.4505 0.08512 2018 5 23 58261 0.0976 0.4508 0.08430 2018 5 24 58262 0.0992 0.4510 0.08340 2018 5 25 58263 0.1007 0.4512 0.08246 2018 5 26 58264 0.1023 0.4514 0.08156 2018 5 27 58265 0.1039 0.4516 0.08075 2018 5 28 58266 0.1055 0.4517 0.08008 2018 5 29 58267 0.1071 0.4518 0.07956 2018 5 30 58268 0.1087 0.4519 0.07919 2018 5 31 58269 0.1104 0.4520 0.07896 2018 6 1 58270 0.1120 0.4521 0.07884 2018 6 2 58271 0.1137 0.4521 0.07881 2018 6 3 58272 0.1153 0.4520 0.07880 2018 6 4 58273 0.1170 0.4520 0.07878 2018 6 5 58274 0.1186 0.4519 0.07871 2018 6 6 58275 0.1203 0.4517 0.07856 2018 6 7 58276 0.1220 0.4516 0.07832 2018 6 8 58277 0.1236 0.4514 0.07797 2018 6 9 58278 0.1253 0.4512 0.07754 2018 6 10 58279 0.1269 0.4510 0.07708 2018 6 11 58280 0.1286 0.4507 0.07665 2018 6 12 58281 0.1302 0.4504 0.07631 2018 6 13 58282 0.1319 0.4501 0.07611 2018 6 14 58283 0.1335 0.4498 0.07606 2018 6 15 58284 0.1351 0.4494 0.07611 2018 6 16 58285 0.1367 0.4490 0.07619 2018 6 17 58286 0.1384 0.4486 0.07622 2018 6 18 58287 0.1400 0.4482 0.07617 2018 6 19 58288 0.1416 0.4477 0.07603 2018 6 20 58289 0.1432 0.4472 0.07581 2018 6 21 58290 0.1447 0.4467 0.07557 2018 6 22 58291 0.1463 0.4461 0.07538 2018 6 23 58292 0.1479 0.4456 0.07529 2018 6 24 58293 0.1494 0.4450 0.07534 2018 6 25 58294 0.1510 0.4443 0.07554 2018 6 26 58295 0.1525 0.4437 0.07590 2018 6 27 58296 0.1540 0.4430 0.07639 2018 6 28 58297 0.1556 0.4423 0.07699 2018 6 29 58298 0.1571 0.4416 0.07764 2018 6 30 58299 0.1585 0.4408 0.07830 2018 7 1 58300 0.1600 0.4401 0.07893 2018 7 2 58301 0.1615 0.4393 0.07947 2018 7 3 58302 0.1629 0.4384 0.07989 2018 7 4 58303 0.1643 0.4376 0.08019 2018 7 5 58304 0.1657 0.4367 0.08036 2018 7 6 58305 0.1671 0.4358 0.08042 2018 7 7 58306 0.1685 0.4349 0.08040 2018 7 8 58307 0.1699 0.4340 0.08034 2018 7 9 58308 0.1712 0.4330 0.08029 2018 7 10 58309 0.1725 0.4321 0.08032 2018 7 11 58310 0.1738 0.4311 0.08044 2018 7 12 58311 0.1751 0.4301 0.08065 2018 7 13 58312 0.1764 0.4290 0.08089 2018 7 14 58313 0.1776 0.4280 0.08109 2018 7 15 58314 0.1789 0.4269 0.08117 2018 7 16 58315 0.1801 0.4258 0.08113 2018 7 17 58316 0.1813 0.4247 0.08098 2018 7 18 58317 0.1824 0.4235 0.08078 2018 7 19 58318 0.1836 0.4224 0.08062 2018 7 20 58319 0.1847 0.4212 0.08056 2018 7 21 58320 0.1858 0.4200 0.08063 2018 7 22 58321 0.1869 0.4188 0.08086 2018 7 23 58322 0.1879 0.4176 0.08124 2018 7 24 58323 0.1890 0.4163 0.08175 2018 7 25 58324 0.1900 0.4150 0.08235 2018 7 26 58325 0.1910 0.4138 0.08299 2018 7 27 58326 0.1919 0.4125 0.08364 2018 7 28 58327 0.1929 0.4112 0.08425 2018 7 29 58328 0.1938 0.4098 0.08477 2018 7 30 58329 0.1947 0.4085 0.08517 2018 7 31 58330 0.1955 0.4071 0.08545 2018 8 1 58331 0.1964 0.4058 0.08560 2018 8 2 58332 0.1972 0.4044 0.08563 2018 8 3 58333 0.1980 0.4030 0.08558 2018 8 4 58334 0.1987 0.4016 0.08550 2018 8 5 58335 0.1995 0.4002 0.08542 2018 8 6 58336 0.2002 0.3988 0.08538 2018 8 7 58337 0.2009 0.3973 0.08541 2018 8 8 58338 0.2015 0.3959 0.08551 2018 8 9 58339 0.2021 0.3944 0.08564 2018 8 10 58340 0.2027 0.3929 0.08573 2018 8 11 58341 0.2033 0.3914 0.08569 2018 8 12 58342 0.2039 0.3899 0.08549 2018 8 13 58343 0.2044 0.3884 0.08511 2018 8 14 58344 0.2049 0.3869 0.08462 2018 8 15 58345 0.2053 0.3854 0.08410 2018 8 16 58346 0.2058 0.3839 0.08364 2018 8 17 58347 0.2062 0.3824 0.08329 2018 8 18 58348 0.2065 0.3808 0.08309 2018 8 19 58349 0.2069 0.3793 0.08304 2018 8 20 58350 0.2072 0.3777 0.08312 2018 8 21 58351 0.2075 0.3762 0.08329 2018 8 22 58352 0.2077 0.3746 0.08351 2018 8 23 58353 0.2080 0.3730 0.08375 2018 8 24 58354 0.2082 0.3715 0.08394 2018 8 25 58355 0.2083 0.3699 0.08404 2018 8 26 58356 0.2085 0.3683 0.08404 2018 8 27 58357 0.2086 0.3667 0.08394 2018 8 28 58358 0.2087 0.3652 0.08370 2018 8 29 58359 0.2087 0.3636 0.08334 2018 8 30 58360 0.2087 0.3620 0.08290 2018 8 31 58361 0.2087 0.3604 0.08241 2018 9 1 58362 0.2087 0.3588 0.08193 2018 9 2 58363 0.2086 0.3573 0.08150 2018 9 3 58364 0.2085 0.3557 0.08114 2018 9 4 58365 0.2084 0.3541 0.08085 2018 9 5 58366 0.2083 0.3525 0.08060 2018 9 6 58367 0.2081 0.3510 0.08034 2018 9 7 58368 0.2079 0.3494 0.07997 2018 9 8 58369 0.2076 0.3478 0.07944 2018 9 9 58370 0.2073 0.3462 0.07871 2018 9 10 58371 0.2070 0.3447 0.07782 2018 9 11 58372 0.2067 0.3431 0.07683 2018 9 12 58373 0.2063 0.3416 0.07584 2018 9 13 58374 0.2060 0.3400 0.07494 2018 9 14 58375 0.2055 0.3385 0.07418 2018 9 15 58376 0.2051 0.3370 0.07359 2018 9 16 58377 0.2046 0.3354 0.07316 2018 9 17 58378 0.2041 0.3339 0.07284 2018 9 18 58379 0.2036 0.3324 0.07261 2018 9 19 58380 0.2030 0.3309 0.07239 2018 9 20 58381 0.2024 0.3294 0.07215 2018 9 21 58382 0.2018 0.3279 0.07184 2018 9 22 58383 0.2012 0.3265 0.07142 2018 9 23 58384 0.2005 0.3250 0.07086 2018 9 24 58385 0.1998 0.3235 0.07016 2018 9 25 58386 0.1991 0.3221 0.06933 2018 9 26 58387 0.1983 0.3207 0.06840 2018 9 27 58388 0.1975 0.3192 0.06741 2018 9 28 58389 0.1967 0.3178 0.06643 2018 9 29 58390 0.1959 0.3164 0.06551 2018 9 30 58391 0.1950 0.3151 0.06468 2018 10 1 58392 0.1941 0.3137 0.06394 2018 10 2 58393 0.1932 0.3123 0.06327 2018 10 3 58394 0.1923 0.3110 0.06260 2018 10 4 58395 0.1913 0.3097 0.06187 2018 10 5 58396 0.1904 0.3084 0.06101 2018 10 6 58397 0.1893 0.3071 0.05997 2018 10 7 58398 0.1883 0.3058 0.05874 2018 10 8 58399 0.1873 0.3045 0.05738 2018 10 9 58400 0.1862 0.3033 0.05596 2018 10 10 58401 0.1851 0.3021 0.05458 2018 10 11 58402 0.1839 0.3008 0.05332 2018 10 12 58403 0.1828 0.2997 0.05223 2018 10 13 58404 0.1816 0.2985 0.05130 2018 10 14 58405 0.1804 0.2973 0.05053 2018 10 15 58406 0.1792 0.2962 0.04986 2018 10 16 58407 0.1780 0.2951 0.04925 2018 10 17 58408 0.1767 0.2940 0.04864 2018 10 18 58409 0.1754 0.2929 0.04799 2018 10 19 58410 0.1741 0.2918 0.04724 2018 10 20 58411 0.1728 0.2908 0.04637 2018 10 21 58412 0.1715 0.2898 0.04536 2018 10 22 58413 0.1701 0.2888 0.04422 2018 10 23 58414 0.1687 0.2878 0.04297 2018 10 24 58415 0.1673 0.2869 0.04165 2018 10 25 58416 0.1659 0.2859 0.04032 2018 10 26 58417 0.1645 0.2850 0.03905 2018 10 27 58418 0.1631 0.2841 0.03788 2018 10 28 58419 0.1616 0.2833 0.03683 2018 10 29 58420 0.1601 0.2825 0.03588 2018 10 30 58421 0.1586 0.2816 0.03498 2018 10 31 58422 0.1571 0.2808 0.03407 2018 11 1 58423 0.1556 0.2801 0.03306 2018 11 2 58424 0.1541 0.2793 0.03192 2018 11 3 58425 0.1525 0.2786 0.03061 2018 11 4 58426 0.1509 0.2779 0.02917 2018 11 5 58427 0.1494 0.2773 0.02765 2018 11 6 58428 0.1478 0.2766 0.02615 2018 11 7 58429 0.1462 0.2760 0.02473 2018 11 8 58430 0.1446 0.2754 0.02345 2018 11 9 58431 0.1429 0.2748 0.02236 2018 11 10 58432 0.1413 0.2743 0.02142 2018 11 11 58433 0.1396 0.2738 0.02062 2018 11 12 58434 0.1380 0.2733 0.01991 2018 11 13 58435 0.1363 0.2728 0.01923 2018 11 14 58436 0.1347 0.2724 0.01853 2018 11 15 58437 0.1330 0.2720 0.01776 2018 11 16 58438 0.1313 0.2716 0.01687 2018 11 17 58439 0.1296 0.2712 0.01584 2018 11 18 58440 0.1279 0.2709 0.01465 2018 11 19 58441 0.1262 0.2706 0.01333 2018 11 20 58442 0.1245 0.2703 0.01189 2018 11 21 58443 0.1227 0.2701 0.01041 2018 11 22 58444 0.1210 0.2699 0.00895 2018 11 23 58445 0.1193 0.2697 0.00760 2018 11 24 58446 0.1176 0.2695 0.00639 2018 11 25 58447 0.1158 0.2694 0.00535 2018 11 26 58448 0.1141 0.2693 0.00441 2018 11 27 58449 0.1124 0.2692 0.00351 2018 11 28 58450 0.1106 0.2691 0.00256 2018 11 29 58451 0.1089 0.2691 0.00150 2018 11 30 58452 0.1071 0.2691 0.00032 2018 12 1 58453 0.1054 0.2691 -0.00096 2018 12 2 58454 0.1036 0.2692 -0.00229 2018 12 3 58455 0.1019 0.2693 -0.00361 2018 12 4 58456 0.1002 0.2694 -0.00485 2018 12 5 58457 0.0984 0.2695 -0.00597 2018 12 6 58458 0.0967 0.2697 -0.00693 2018 12 7 58459 0.0950 0.2699 -0.00775 2018 12 8 58460 0.0932 0.2701 -0.00844 2018 12 9 58461 0.0915 0.2704 -0.00904 2018 12 10 58462 0.0898 0.2707 -0.00960 2018 12 11 58463 0.0881 0.2710 -0.01017 2018 12 12 58464 0.0864 0.2713 -0.01079 2018 12 13 58465 0.0847 0.2717 -0.01150 2018 12 14 58466 0.0830 0.2720 -0.01230 2018 12 15 58467 0.0813 0.2725 -0.01320 2018 12 16 58468 0.0796 0.2729 -0.01418 2018 12 17 58469 0.0779 0.2734 -0.01521 2018 12 18 58470 0.0763 0.2739 -0.01624 2018 12 19 58471 0.0746 0.2744 -0.01723 2018 12 20 58472 0.0730 0.2749 -0.01813 2018 12 21 58473 0.0714 0.2755 -0.01893 2018 12 22 58474 0.0697 0.2761 -0.01955 2018 12 23 58475 0.0681 0.2767 -0.02005 2018 12 24 58476 0.0665 0.2774 -0.02047 2018 12 25 58477 0.0649 0.2781 -0.02095 2018 12 26 58478 0.0634 0.2788 -0.02156 2018 12 27 58479 0.0618 0.2795 -0.02231 2018 12 28 58480 0.0603 0.2802 -0.02316 2018 12 29 58481 0.0587 0.2810 -0.02411 2018 12 30 58482 0.0572 0.2818 -0.02504 2018 12 31 58483 0.0557 0.2827 -0.02591 2019 1 1 58484 0.0542 0.2835 -0.02668 2019 1 2 58485 0.0527 0.2844 -0.02736 2019 1 3 58486 0.0513 0.2853 -0.02802 2019 1 4 58487 0.0498 0.2862 -0.02859 2019 1 5 58488 0.0484 0.2871 -0.02907 2019 1 6 58489 0.0470 0.2881 -0.02941 2019 1 7 58490 0.0456 0.2891 -0.02970 2019 1 8 58491 0.0443 0.2901 -0.03000 2019 1 9 58492 0.0429 0.2911 -0.03041 2019 1 10 58493 0.0416 0.2922 -0.03096 2019 1 11 58494 0.0403 0.2933 -0.03163 2019 1 12 58495 0.0390 0.2944 -0.03246 2019 1 13 58496 0.0377 0.2955 -0.03338 2019 1 14 58497 0.0365 0.2966 -0.03442 2019 1 15 58498 0.0352 0.2978 -0.03552 2019 1 16 58499 0.0340 0.2990 -0.03658 2019 1 17 58500 0.0328 0.3002 -0.03754 2019 1 18 58501 0.0317 0.3014 -0.03833 2019 1 19 58502 0.0305 0.3026 -0.03906 2019 1 20 58503 0.0294 0.3039 -0.03973 2019 1 21 58504 0.0283 0.3051 -0.04044 2019 1 22 58505 0.0273 0.3064 -0.04128 2019 1 23 58506 0.0262 0.3077 -0.04230 2019 1 24 58507 0.0252 0.3091 -0.04350 2019 1 25 58508 0.0242 0.3104 -0.04482 2019 1 26 58509 0.0232 0.3117 -0.04618 2019 1 27 58510 0.0223 0.3131 -0.04748 2019 1 28 58511 0.0214 0.3145 -0.04864 2019 1 29 58512 0.0205 0.3159 -0.04961 2019 1 30 58513 0.0196 0.3173 -0.05040 2019 1 31 58514 0.0188 0.3187 -0.05109 2019 2 1 58515 0.0180 0.3202 -0.05169 2019 2 2 58516 0.0172 0.3216 -0.05222 2019 2 3 58517 0.0164 0.3231 -0.05267 2019 2 4 58518 0.0157 0.3246 -0.05316 2019 2 5 58519 0.0150 0.3261 -0.05369 2019 2 6 58520 0.0143 0.3276 -0.05429 2019 2 7 58521 0.0137 0.3291 -0.05503 2019 2 8 58522 0.0130 0.3306 -0.05591 2019 2 9 58523 0.0125 0.3322 -0.05694 2019 2 10 58524 0.0119 0.3337 -0.05797 2019 2 11 58525 0.0114 0.3353 -0.05908 2019 2 12 58526 0.0108 0.3368 -0.06026 2019 2 13 58527 0.0104 0.3384 -0.06137 2019 2 14 58528 0.0099 0.3400 -0.06239 2019 2 15 58529 0.0095 0.3416 -0.06339 2019 2 16 58530 0.0091 0.3431 -0.06430 2019 2 17 58531 0.0088 0.3447 -0.06527 2019 2 18 58532 0.0084 0.3463 -0.06637 2019 2 19 58533 0.0081 0.3480 -0.06767 2019 2 20 58534 0.0079 0.3496 -0.06923 2019 2 21 58535 0.0076 0.3512 -0.07102 2019 2 22 58536 0.0074 0.3528 -0.07298 2019 2 23 58537 0.0072 0.3544 -0.07497 2019 2 24 58538 0.0071 0.3561 -0.07684 2019 2 25 58539 0.0070 0.3577 -0.07855 2019 2 26 58540 0.0069 0.3593 -0.08010 2019 2 27 58541 0.0068 0.3610 -0.08149 2019 2 28 58542 0.0068 0.3626 -0.08281 2019 3 1 58543 0.0068 0.3642 -0.08402 2019 3 2 58544 0.0069 0.3659 -0.08516 2019 3 3 58545 0.0069 0.3675 -0.08634 2019 3 4 58546 0.0070 0.3691 -0.08759 2019 3 5 58547 0.0072 0.3708 -0.08897 2019 3 6 58548 0.0073 0.3724 -0.09050 2019 3 7 58549 0.0075 0.3740 -0.09219 2019 3 8 58550 0.0077 0.3756 -0.09395 2019 3 9 58551 0.0080 0.3773 -0.09579 2019 3 10 58552 0.0083 0.3789 -0.09763 2019 3 11 58553 0.0086 0.3805 -0.09939 2019 3 12 58554 0.0089 0.3821 -0.10104 2019 3 13 58555 0.0093 0.3837 -0.10260 2019 3 14 58556 0.0097 0.3853 -0.10409 2019 3 15 58557 0.0101 0.3869 -0.10554 2019 3 16 58558 0.0106 0.3885 -0.10697 2019 3 17 58559 0.0111 0.3901 -0.10837 2019 3 18 58560 0.0116 0.3916 -0.10993 2019 3 19 58561 0.0121 0.3932 -0.11167 2019 3 20 58562 0.0127 0.3947 -0.11364 2019 3 21 58563 0.0133 0.3963 -0.11586 2019 3 22 58564 0.0139 0.3978 -0.11826 2019 3 23 58565 0.0146 0.3993 -0.12064 2019 3 24 58566 0.0153 0.4008 -0.12289 2019 3 25 58567 0.0160 0.4024 -0.12496 2019 3 26 58568 0.0168 0.4038 -0.12675 2019 3 27 58569 0.0176 0.4053 -0.12835 2019 3 28 58570 0.0184 0.4068 -0.12982 2019 3 29 58571 0.0192 0.4082 -0.13121 2019 3 30 58572 0.0200 0.4097 -0.13253 2019 3 31 58573 0.0209 0.4111 -0.13389 2019 4 1 58574 0.0218 0.4125 -0.13529 2019 4 2 58575 0.0228 0.4139 -0.13678 2019 4 3 58576 0.0238 0.4153 -0.13845 2019 4 4 58577 0.0247 0.4167 -0.14021 2019 4 5 58578 0.0258 0.4180 -0.14196 2019 4 6 58579 0.0268 0.4193 -0.14374 2019 4 7 58580 0.0279 0.4207 -0.14554 2019 4 8 58581 0.0290 0.4220 -0.14729 2019 4 9 58582 0.0301 0.4232 -0.14891 2019 4 10 58583 0.0312 0.4245 -0.15040 2019 4 11 58584 0.0324 0.4257 -0.15176 2019 4 12 58585 0.0336 0.4270 -0.15303 2019 4 13 58586 0.0348 0.4282 -0.15432 2019 4 14 58587 0.0360 0.4294 -0.15572 2019 4 15 58588 0.0373 0.4305 -0.15730 2019 4 16 58589 0.0385 0.4317 -0.15899 2019 4 17 58590 0.0398 0.4328 -0.16090 2019 4 18 58591 0.0412 0.4339 -0.16298 2019 4 19 58592 0.0425 0.4350 -0.16506 2019 4 20 58593 0.0439 0.4361 -0.16711 2019 4 21 58594 0.0452 0.4371 -0.16898 2019 4 22 58595 0.0466 0.4381 -0.17063 2019 4 23 58596 0.0481 0.4391 -0.17211 2019 4 24 58597 0.0495 0.4401 -0.17347 2019 4 25 58598 0.0510 0.4411 -0.17472 2019 4 26 58599 0.0524 0.4420 -0.17593 2019 4 27 58600 0.0539 0.4429 -0.17721 2019 4 28 58601 0.0554 0.4438 -0.17858 2019 4 29 58602 0.0570 0.4446 -0.18011 2019 4 30 58603 0.0585 0.4455 -0.18175 2019 5 1 58604 0.0601 0.4463 -0.18350 2019 5 2 58605 0.0616 0.4471 -0.18534 2019 5 3 58606 0.0632 0.4478 -0.18727 2019 5 4 58607 0.0648 0.4485 -0.18919 2019 5 5 58608 0.0664 0.4493 -0.19102 2019 5 6 58609 0.0681 0.4499 -0.19268 2019 5 7 58610 0.0697 0.4506 -0.19416 2019 5 8 58611 0.0714 0.4512 -0.19542 2019 5 9 58612 0.0730 0.4518 -0.19657 2019 5 10 58613 0.0747 0.4524 -0.19778 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) 58219 -101.58 0.09 -11.89 0.18 58220 -101.56 0.09 -11.83 0.18 58221 -101.73 0.09 -11.69 0.18 58222 -101.94 0.06 -11.48 0.16 58223 -102.04 0.06 -11.33 0.16 58224 -102.07 0.06 -11.35 0.16 58225 -102.15 0.32 -11.58 0.16 58226 -102.36 0.24 -11.90 0.03 58227 -102.68 0.24 -12.13 0.03 58228 -102.97 0.24 -12.16 0.03 58229 -103.09 0.24 -12.06 0.03 58230 -102.97 0.18 -11.96 0.10 58231 -102.57 0.18 -11.95 0.10 58232 -101.98 0.04 -11.99 0.14 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58219 -0.029 0.034 -0.167 0.177 58220 -0.035 0.034 -0.153 0.177 58221 -0.044 0.034 -0.136 0.177 58222 -0.054 0.026 -0.114 0.156 58223 -0.064 0.026 -0.091 0.156 58224 -0.074 0.026 -0.069 0.156 58225 -0.082 0.128 -0.049 0.160 58226 -0.086 0.095 -0.034 0.027 58227 -0.086 0.095 -0.026 0.027 58228 -0.080 0.095 -0.028 0.027 58229 -0.068 0.095 -0.041 0.027 58230 -0.049 0.073 -0.064 0.101 58231 -0.027 0.073 -0.094 0.101 58232 -0.002 0.018 -0.128 0.136 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).