********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 17 May 2018 Vol. XXXI No. 020 ______________________________________________________________________ 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. 020, on 17 May 2018, the contri- * * bution of the US Navy Fleet Numerical Meteorology and Oceanography * * Center (FNMOC) to the Atmospheric Angular Momentum (AAM) * * inputs has been upgraded to version 1.4.3eop of the Navy Global * * Environmental Model (NAVGEM). It is anticipated that this * * upgrade may somewhat improve the short term UT1-UTC predictions. * * * * 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 11 58249 0.07912 .00009 0.44521 .00009 0.093694 0.000008 18 5 12 58250 0.08084 .00009 0.44530 .00009 0.092653 0.000009 18 5 13 58251 0.08304 .00009 0.44518 .00009 0.091517 0.000010 18 5 14 58252 0.08529 .00009 0.44512 .00009 0.090419 0.000012 18 5 15 58253 0.08754 .00009 0.44522 .00009 0.089413 0.000014 18 5 16 58254 0.08973 .00009 0.44547 .00009 0.088545 0.000015 18 5 17 58255 0.09180 .00009 0.44572 .00009 0.087841 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 = 0.1125 - 0.0358 cos A + 0.1403 sin A + 0.0148 cos C - 0.0283 sin C y = 0.3412 + 0.1319 cos A + 0.0371 sin A - 0.0283 cos C - 0.0148 sin C UT1-UTC = 0.1311 - 0.00078 (MJD - 58263) - (UT2-UT1) where A = 2*pi*(MJD-58255)/365.25 and C = 2*pi*(MJD-58255)/435. TAI-UTC(MJD 58256) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58255)**0.80 S t = 0.00025 (MJD-58255)**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 18 58256 0.0937 0.4461 0.08719 2018 5 19 58257 0.0956 0.4464 0.08658 2018 5 20 58258 0.0973 0.4467 0.08596 2018 5 21 58259 0.0990 0.4469 0.08528 2018 5 22 58260 0.1007 0.4471 0.08448 2018 5 23 58261 0.1023 0.4473 0.08355 2018 5 24 58262 0.1039 0.4474 0.08253 2018 5 25 58263 0.1055 0.4476 0.08151 2018 5 26 58264 0.1070 0.4477 0.08053 2018 5 27 58265 0.1086 0.4478 0.07969 2018 5 28 58266 0.1101 0.4479 0.07903 2018 5 29 58267 0.1116 0.4479 0.07855 2018 5 30 58268 0.1130 0.4480 0.07828 2018 5 31 58269 0.1145 0.4479 0.07816 2018 6 1 58270 0.1161 0.4479 0.07813 2018 6 2 58271 0.1176 0.4478 0.07816 2018 6 3 58272 0.1192 0.4476 0.07817 2018 6 4 58273 0.1208 0.4475 0.07813 2018 6 5 58274 0.1225 0.4472 0.07798 2018 6 6 58275 0.1241 0.4470 0.07771 2018 6 7 58276 0.1258 0.4467 0.07732 2018 6 8 58277 0.1275 0.4464 0.07681 2018 6 9 58278 0.1292 0.4460 0.07620 2018 6 10 58279 0.1309 0.4457 0.07555 2018 6 11 58280 0.1326 0.4454 0.07493 2018 6 12 58281 0.1342 0.4450 0.07440 2018 6 13 58282 0.1358 0.4446 0.07403 2018 6 14 58283 0.1374 0.4442 0.07381 2018 6 15 58284 0.1390 0.4438 0.07372 2018 6 16 58285 0.1405 0.4434 0.07368 2018 6 17 58286 0.1421 0.4429 0.07361 2018 6 18 58287 0.1436 0.4424 0.07346 2018 6 19 58288 0.1451 0.4419 0.07322 2018 6 20 58289 0.1465 0.4413 0.07292 2018 6 21 58290 0.1480 0.4408 0.07262 2018 6 22 58291 0.1494 0.4402 0.07237 2018 6 23 58292 0.1509 0.4395 0.07224 2018 6 24 58293 0.1523 0.4389 0.07225 2018 6 25 58294 0.1537 0.4382 0.07242 2018 6 26 58295 0.1551 0.4375 0.07274 2018 6 27 58296 0.1565 0.4368 0.07320 2018 6 28 58297 0.1579 0.4360 0.07377 2018 6 29 58298 0.1593 0.4353 0.07440 2018 6 30 58299 0.1607 0.4345 0.07504 2018 7 1 58300 0.1621 0.4336 0.07564 2018 7 2 58301 0.1634 0.4328 0.07617 2018 7 3 58302 0.1647 0.4319 0.07658 2018 7 4 58303 0.1661 0.4311 0.07689 2018 7 5 58304 0.1674 0.4302 0.07708 2018 7 6 58305 0.1686 0.4292 0.07719 2018 7 7 58306 0.1699 0.4283 0.07723 2018 7 8 58307 0.1711 0.4274 0.07726 2018 7 9 58308 0.1724 0.4264 0.07733 2018 7 10 58309 0.1736 0.4254 0.07749 2018 7 11 58310 0.1747 0.4244 0.07775 2018 7 12 58311 0.1759 0.4234 0.07811 2018 7 13 58312 0.1770 0.4223 0.07849 2018 7 14 58313 0.1781 0.4212 0.07882 2018 7 15 58314 0.1792 0.4202 0.07901 2018 7 16 58315 0.1803 0.4191 0.07906 2018 7 17 58316 0.1814 0.4179 0.07898 2018 7 18 58317 0.1824 0.4168 0.07884 2018 7 19 58318 0.1834 0.4156 0.07870 2018 7 20 58319 0.1844 0.4145 0.07863 2018 7 21 58320 0.1853 0.4133 0.07868 2018 7 22 58321 0.1863 0.4121 0.07887 2018 7 23 58322 0.1872 0.4109 0.07919 2018 7 24 58323 0.1881 0.4096 0.07965 2018 7 25 58324 0.1890 0.4084 0.08020 2018 7 26 58325 0.1898 0.4071 0.08080 2018 7 27 58326 0.1906 0.4059 0.08142 2018 7 28 58327 0.1914 0.4046 0.08200 2018 7 29 58328 0.1922 0.4033 0.08251 2018 7 30 58329 0.1930 0.4020 0.08292 2018 7 31 58330 0.1937 0.4006 0.08321 2018 8 1 58331 0.1944 0.3993 0.08337 2018 8 2 58332 0.1951 0.3980 0.08344 2018 8 3 58333 0.1957 0.3966 0.08344 2018 8 4 58334 0.1964 0.3952 0.08340 2018 8 5 58335 0.1970 0.3939 0.08337 2018 8 6 58336 0.1975 0.3925 0.08339 2018 8 7 58337 0.1981 0.3911 0.08348 2018 8 8 58338 0.1986 0.3897 0.08365 2018 8 9 58339 0.1991 0.3883 0.08385 2018 8 10 58340 0.1996 0.3868 0.08401 2018 8 11 58341 0.2000 0.3854 0.08405 2018 8 12 58342 0.2004 0.3840 0.08391 2018 8 13 58343 0.2008 0.3825 0.08361 2018 8 14 58344 0.2012 0.3811 0.08318 2018 8 15 58345 0.2015 0.3796 0.08271 2018 8 16 58346 0.2018 0.3782 0.08229 2018 8 17 58347 0.2021 0.3767 0.08199 2018 8 18 58348 0.2023 0.3752 0.08182 2018 8 19 58349 0.2025 0.3738 0.08180 2018 8 20 58350 0.2027 0.3723 0.08191 2018 8 21 58351 0.2029 0.3708 0.08210 2018 8 22 58352 0.2030 0.3693 0.08235 2018 8 23 58353 0.2031 0.3679 0.08261 2018 8 24 58354 0.2032 0.3664 0.08282 2018 8 25 58355 0.2033 0.3649 0.08295 2018 8 26 58356 0.2033 0.3634 0.08296 2018 8 27 58357 0.2033 0.3619 0.08283 2018 8 28 58358 0.2033 0.3604 0.08256 2018 8 29 58359 0.2032 0.3589 0.08217 2018 8 30 58360 0.2031 0.3574 0.08168 2018 8 31 58361 0.2030 0.3560 0.08115 2018 9 1 58362 0.2029 0.3545 0.08063 2018 9 2 58363 0.2027 0.3530 0.08016 2018 9 3 58364 0.2025 0.3515 0.07981 2018 9 4 58365 0.2023 0.3500 0.07953 2018 9 5 58366 0.2020 0.3486 0.07929 2018 9 6 58367 0.2017 0.3471 0.07903 2018 9 7 58368 0.2014 0.3456 0.07868 2018 9 8 58369 0.2011 0.3442 0.07816 2018 9 9 58370 0.2007 0.3427 0.07744 2018 9 10 58371 0.2003 0.3413 0.07655 2018 9 11 58372 0.1999 0.3398 0.07557 2018 9 12 58373 0.1994 0.3384 0.07458 2018 9 13 58374 0.1990 0.3370 0.07368 2018 9 14 58375 0.1985 0.3356 0.07293 2018 9 15 58376 0.1979 0.3341 0.07234 2018 9 16 58377 0.1974 0.3327 0.07190 2018 9 17 58378 0.1968 0.3313 0.07158 2018 9 18 58379 0.1962 0.3300 0.07133 2018 9 19 58380 0.1956 0.3286 0.07110 2018 9 20 58381 0.1949 0.3272 0.07085 2018 9 21 58382 0.1942 0.3259 0.07052 2018 9 22 58383 0.1935 0.3245 0.07009 2018 9 23 58384 0.1928 0.3232 0.06951 2018 9 24 58385 0.1920 0.3219 0.06880 2018 9 25 58386 0.1912 0.3205 0.06795 2018 9 26 58387 0.1904 0.3192 0.06701 2018 9 27 58388 0.1896 0.3180 0.06602 2018 9 28 58389 0.1887 0.3167 0.06503 2018 9 29 58390 0.1878 0.3154 0.06411 2018 9 30 58391 0.1869 0.3142 0.06327 2018 10 1 58392 0.1860 0.3130 0.06254 2018 10 2 58393 0.1850 0.3117 0.06187 2018 10 3 58394 0.1840 0.3105 0.06121 2018 10 4 58395 0.1830 0.3094 0.06050 2018 10 5 58396 0.1820 0.3082 0.05965 2018 10 6 58397 0.1810 0.3070 0.05863 2018 10 7 58398 0.1799 0.3059 0.05742 2018 10 8 58399 0.1788 0.3048 0.05608 2018 10 9 58400 0.1777 0.3037 0.05468 2018 10 10 58401 0.1766 0.3026 0.05333 2018 10 11 58402 0.1754 0.3015 0.05209 2018 10 12 58403 0.1743 0.3005 0.05102 2018 10 13 58404 0.1731 0.2994 0.05013 2018 10 14 58405 0.1719 0.2984 0.04938 2018 10 15 58406 0.1706 0.2974 0.04873 2018 10 16 58407 0.1694 0.2965 0.04815 2018 10 17 58408 0.1681 0.2955 0.04756 2018 10 18 58409 0.1669 0.2946 0.04693 2018 10 19 58410 0.1656 0.2937 0.04621 2018 10 20 58411 0.1642 0.2928 0.04536 2018 10 21 58412 0.1629 0.2919 0.04438 2018 10 22 58413 0.1616 0.2911 0.04326 2018 10 23 58414 0.1602 0.2902 0.04203 2018 10 24 58415 0.1588 0.2894 0.04074 2018 10 25 58416 0.1574 0.2886 0.03943 2018 10 26 58417 0.1560 0.2879 0.03818 2018 10 27 58418 0.1546 0.2871 0.03703 2018 10 28 58419 0.1531 0.2864 0.03601 2018 10 29 58420 0.1517 0.2857 0.03509 2018 10 30 58421 0.1502 0.2850 0.03421 2018 10 31 58422 0.1487 0.2844 0.03332 2018 11 1 58423 0.1472 0.2838 0.03233 2018 11 2 58424 0.1457 0.2832 0.03121 2018 11 3 58425 0.1442 0.2826 0.02992 2018 11 4 58426 0.1427 0.2820 0.02850 2018 11 5 58427 0.1412 0.2815 0.02700 2018 11 6 58428 0.1396 0.2810 0.02552 2018 11 7 58429 0.1381 0.2805 0.02412 2018 11 8 58430 0.1365 0.2801 0.02287 2018 11 9 58431 0.1349 0.2796 0.02179 2018 11 10 58432 0.1333 0.2792 0.02089 2018 11 11 58433 0.1318 0.2788 0.02012 2018 11 12 58434 0.1302 0.2785 0.01944 2018 11 13 58435 0.1286 0.2782 0.01880 2018 11 14 58436 0.1270 0.2779 0.01815 2018 11 15 58437 0.1253 0.2776 0.01743 2018 11 16 58438 0.1237 0.2773 0.01661 2018 11 17 58439 0.1221 0.2771 0.01568 2018 11 18 58440 0.1205 0.2769 0.01462 2018 11 19 58441 0.1188 0.2767 0.01345 2018 11 20 58442 0.1172 0.2766 0.01219 2018 11 21 58443 0.1156 0.2764 0.01089 2018 11 22 58444 0.1139 0.2763 0.00961 2018 11 23 58445 0.1123 0.2763 0.00841 2018 11 24 58446 0.1106 0.2762 0.00731 2018 11 25 58447 0.1090 0.2762 0.00632 2018 11 26 58448 0.1074 0.2762 0.00539 2018 11 27 58449 0.1057 0.2762 0.00444 2018 11 28 58450 0.1041 0.2763 0.00340 2018 11 29 58451 0.1024 0.2764 0.00223 2018 11 30 58452 0.1008 0.2765 0.00092 2018 12 1 58453 0.0991 0.2766 -0.00051 2018 12 2 58454 0.0975 0.2768 -0.00198 2018 12 3 58455 0.0959 0.2770 -0.00342 2018 12 4 58456 0.0942 0.2772 -0.00477 2018 12 5 58457 0.0926 0.2774 -0.00597 2018 12 6 58458 0.0910 0.2777 -0.00700 2018 12 7 58459 0.0894 0.2780 -0.00786 2018 12 8 58460 0.0878 0.2783 -0.00858 2018 12 9 58461 0.0862 0.2787 -0.00919 2018 12 10 58462 0.0846 0.2790 -0.00972 2018 12 11 58463 0.0830 0.2794 -0.01022 2018 12 12 58464 0.0814 0.2799 -0.01074 2018 12 13 58465 0.0798 0.2803 -0.01132 2018 12 14 58466 0.0783 0.2808 -0.01199 2018 12 15 58467 0.0767 0.2813 -0.01277 2018 12 16 58468 0.0751 0.2818 -0.01366 2018 12 17 58469 0.0736 0.2823 -0.01463 2018 12 18 58470 0.0721 0.2829 -0.01567 2018 12 19 58471 0.0706 0.2835 -0.01674 2018 12 20 58472 0.0691 0.2841 -0.01778 2018 12 21 58473 0.0676 0.2848 -0.01875 2018 12 22 58474 0.0661 0.2854 -0.01962 2018 12 23 58475 0.0646 0.2861 -0.02041 2018 12 24 58476 0.0631 0.2868 -0.02116 2018 12 25 58477 0.0617 0.2876 -0.02199 2018 12 26 58478 0.0603 0.2883 -0.02296 2018 12 27 58479 0.0589 0.2891 -0.02405 2018 12 28 58480 0.0575 0.2899 -0.02525 2018 12 29 58481 0.0561 0.2908 -0.02654 2018 12 30 58482 0.0547 0.2916 -0.02778 2018 12 31 58483 0.0533 0.2925 -0.02891 2019 1 1 58484 0.0520 0.2934 -0.02986 2019 1 2 58485 0.0507 0.2943 -0.03059 2019 1 3 58486 0.0494 0.2952 -0.03113 2019 1 4 58487 0.0481 0.2962 -0.03153 2019 1 5 58488 0.0468 0.2972 -0.03175 2019 1 6 58489 0.0456 0.2982 -0.03190 2019 1 7 58490 0.0444 0.2992 -0.03198 2019 1 8 58491 0.0431 0.3002 -0.03211 2019 1 9 58492 0.0420 0.3013 -0.03232 2019 1 10 58493 0.0408 0.3024 -0.03265 2019 1 11 58494 0.0396 0.3035 -0.03305 2019 1 12 58495 0.0385 0.3046 -0.03358 2019 1 13 58496 0.0374 0.3057 -0.03420 2019 1 14 58497 0.0363 0.3068 -0.03489 2019 1 15 58498 0.0352 0.3080 -0.03564 2019 1 16 58499 0.0342 0.3092 -0.03644 2019 1 17 58500 0.0332 0.3104 -0.03731 2019 1 18 58501 0.0322 0.3116 -0.03815 2019 1 19 58502 0.0312 0.3129 -0.03892 2019 1 20 58503 0.0302 0.3141 -0.03957 2019 1 21 58504 0.0293 0.3154 -0.04022 2019 1 22 58505 0.0284 0.3166 -0.04096 2019 1 23 58506 0.0275 0.3179 -0.04191 2019 1 24 58507 0.0267 0.3193 -0.04308 2019 1 25 58508 0.0258 0.3206 -0.04438 2019 1 26 58509 0.0250 0.3219 -0.04574 2019 1 27 58510 0.0242 0.3233 -0.04705 2019 1 28 58511 0.0235 0.3246 -0.04829 2019 1 29 58512 0.0227 0.3260 -0.04939 2019 1 30 58513 0.0220 0.3274 -0.05030 2019 1 31 58514 0.0214 0.3288 -0.05102 2019 2 1 58515 0.0207 0.3302 -0.05155 2019 2 2 58516 0.0201 0.3316 -0.05203 2019 2 3 58517 0.0195 0.3330 -0.05249 2019 2 4 58518 0.0189 0.3345 -0.05298 2019 2 5 58519 0.0183 0.3359 -0.05356 2019 2 6 58520 0.0178 0.3374 -0.05425 2019 2 7 58521 0.0173 0.3388 -0.05507 2019 2 8 58522 0.0169 0.3403 -0.05600 2019 2 9 58523 0.0164 0.3418 -0.05703 2019 2 10 58524 0.0160 0.3433 -0.05815 2019 2 11 58525 0.0156 0.3448 -0.05928 2019 2 12 58526 0.0153 0.3463 -0.06038 2019 2 13 58527 0.0150 0.3478 -0.06142 2019 2 14 58528 0.0147 0.3493 -0.06244 2019 2 15 58529 0.0144 0.3508 -0.06340 2019 2 16 58530 0.0142 0.3523 -0.06430 2019 2 17 58531 0.0140 0.3539 -0.06516 2019 2 18 58532 0.0138 0.3554 -0.06612 2019 2 19 58533 0.0136 0.3569 -0.06724 2019 2 20 58534 0.0135 0.3585 -0.06854 2019 2 21 58535 0.0134 0.3600 -0.07004 2019 2 22 58536 0.0133 0.3615 -0.07166 2019 2 23 58537 0.0133 0.3631 -0.07332 2019 2 24 58538 0.0133 0.3646 -0.07480 2019 2 25 58539 0.0133 0.3661 -0.07615 2019 2 26 58540 0.0134 0.3677 -0.07739 2019 2 27 58541 0.0134 0.3692 -0.07843 2019 2 28 58542 0.0135 0.3708 -0.07932 2019 3 1 58543 0.0137 0.3723 -0.08018 2019 3 2 58544 0.0139 0.3738 -0.08097 2019 3 3 58545 0.0140 0.3754 -0.08183 2019 3 4 58546 0.0143 0.3769 -0.08278 2019 3 5 58547 0.0145 0.3784 -0.08385 2019 3 6 58548 0.0148 0.3799 -0.08508 2019 3 7 58549 0.0151 0.3815 -0.08648 2019 3 8 58550 0.0155 0.3830 -0.08805 2019 3 9 58551 0.0158 0.3845 -0.08974 2019 3 10 58552 0.0162 0.3860 -0.09146 2019 3 11 58553 0.0166 0.3875 -0.09317 2019 3 12 58554 0.0171 0.3890 -0.09485 2019 3 13 58555 0.0176 0.3904 -0.09648 2019 3 14 58556 0.0181 0.3919 -0.09808 2019 3 15 58557 0.0186 0.3934 -0.09958 2019 3 16 58558 0.0192 0.3948 -0.10104 2019 3 17 58559 0.0198 0.3963 -0.10256 2019 3 18 58560 0.0204 0.3977 -0.10425 2019 3 19 58561 0.0210 0.3992 -0.10617 2019 3 20 58562 0.0217 0.4006 -0.10835 2019 3 21 58563 0.0224 0.4020 -0.11072 2019 3 22 58564 0.0231 0.4034 -0.11312 2019 3 23 58565 0.0239 0.4048 -0.11548 2019 3 24 58566 0.0247 0.4061 -0.11764 2019 3 25 58567 0.0255 0.4075 -0.11952 2019 3 26 58568 0.0263 0.4088 -0.12115 2019 3 27 58569 0.0272 0.4102 -0.12259 2019 3 28 58570 0.0280 0.4115 -0.12393 2019 3 29 58571 0.0289 0.4128 -0.12522 2019 3 30 58572 0.0299 0.4141 -0.12651 2019 3 31 58573 0.0308 0.4154 -0.12776 2019 4 1 58574 0.0318 0.4166 -0.12910 2019 4 2 58575 0.0328 0.4179 -0.13051 2019 4 3 58576 0.0338 0.4191 -0.13205 2019 4 4 58577 0.0349 0.4203 -0.13378 2019 4 5 58578 0.0360 0.4215 -0.13570 2019 4 6 58579 0.0371 0.4227 -0.13771 2019 4 7 58580 0.0382 0.4239 -0.13973 2019 4 8 58581 0.0393 0.4250 -0.14170 2019 4 9 58582 0.0405 0.4262 -0.14350 2019 4 10 58583 0.0417 0.4273 -0.14516 2019 4 11 58584 0.0429 0.4284 -0.14673 2019 4 12 58585 0.0441 0.4294 -0.14822 2019 4 13 58586 0.0453 0.4305 -0.14967 2019 4 14 58587 0.0466 0.4315 -0.15121 2019 4 15 58588 0.0479 0.4325 -0.15287 2019 4 16 58589 0.0492 0.4335 -0.15472 2019 4 17 58590 0.0505 0.4345 -0.15681 2019 4 18 58591 0.0518 0.4354 -0.15901 2019 4 19 58592 0.0532 0.4363 -0.16111 2019 4 20 58593 0.0546 0.4373 -0.16310 2019 4 21 58594 0.0560 0.4381 -0.16492 2019 4 22 58595 0.0574 0.4390 -0.16655 2019 4 23 58596 0.0588 0.4398 -0.16795 2019 4 24 58597 0.0603 0.4406 -0.16916 2019 4 25 58598 0.0617 0.4414 -0.17023 2019 4 26 58599 0.0632 0.4422 -0.17122 2019 4 27 58600 0.0647 0.4430 -0.17223 2019 4 28 58601 0.0662 0.4437 -0.17331 2019 4 29 58602 0.0677 0.4444 -0.17451 2019 4 30 58603 0.0692 0.4450 -0.17570 2019 5 1 58604 0.0708 0.4457 -0.17703 2019 5 2 58605 0.0723 0.4463 -0.17850 2019 5 3 58606 0.0739 0.4469 -0.18002 2019 5 4 58607 0.0755 0.4475 -0.18160 2019 5 5 58608 0.0771 0.4480 -0.18314 2019 5 6 58609 0.0787 0.4486 -0.18457 2019 5 7 58610 0.0803 0.4490 -0.18590 2019 5 8 58611 0.0819 0.4495 -0.18715 2019 5 9 58612 0.0835 0.4500 -0.18830 2019 5 10 58613 0.0852 0.4504 -0.18944 2019 5 11 58614 0.0868 0.4508 -0.19069 2019 5 12 58615 0.0885 0.4511 -0.19210 2019 5 13 58616 0.0901 0.4515 -0.19374 2019 5 14 58617 0.0918 0.4518 -0.19556 2019 5 15 58618 0.0935 0.4521 -0.19750 2019 5 16 58619 0.0951 0.4523 -0.19950 2019 5 17 58620 0.0968 0.4526 -0.20146 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) 58233 -101.58 0.15 -11.96 0.12 58234 -101.37 0.15 -11.94 0.12 58235 -101.52 0.15 -11.94 0.12 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58233 -0.036 0.058 -0.103 0.122 58234 -0.040 0.058 -0.098 0.122 58235 -0.047 0.058 -0.086 0.122 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).