********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 7 June 2018 Vol. XXXI No. 023 ______________________________________________________________________ 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 * * * * There is a planned power outage at USNO DC June 12 and 13, 2018. * * The exact time and length of the outage is unclear at this time. * * This issue could possibly cause intermittent problems for those * * trying to access EOP data from the primary EO servers. Please be * * prepared to use the backup publication servers listed above for * * those days, if needed. * * * * 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 6 1 58270 0.11442 .00009 0.44694 .00009 0.077014 0.000013 18 6 2 58271 0.11600 .00009 0.44681 .00009 0.076710 0.000011 18 6 3 58272 0.11761 .00009 0.44680 .00009 0.076388 0.000013 18 6 4 58273 0.11898 .00009 0.44688 .00009 0.076043 0.000012 18 6 5 58274 0.12037 .00009 0.44699 .00009 0.075642 0.000012 18 6 6 58275 0.12168 .00009 0.44716 .00009 0.075131 0.000012 18 6 7 58276 0.12267 .00009 0.44738 .00009 0.074470 0.000011 IERS Final Values MJD x y UT1-UTC " " s 18 4 2 58210 0.0331 0.3963 0.13274 18 4 3 58211 0.0337 0.3982 0.13154 18 4 4 58212 0.0341 0.4002 0.13049 18 4 5 58213 0.0343 0.4021 0.12962 18 4 6 58214 0.0344 0.4039 0.12886 18 4 7 58215 0.0343 0.4055 0.12818 18 4 8 58216 0.0348 0.4071 0.12760 18 4 9 58217 0.0356 0.4086 0.12691 18 4 10 58218 0.0368 0.4101 0.12615 18 4 11 58219 0.0379 0.4119 0.12538 18 4 12 58220 0.0387 0.4138 0.12467 18 4 13 58221 0.0389 0.4158 0.12373 18 4 14 58222 0.0399 0.4172 0.12273 18 4 15 58223 0.0418 0.4188 0.12155 18 4 16 58224 0.0440 0.4203 0.12020 18 4 17 58225 0.0459 0.4216 0.11882 18 4 18 58226 0.0474 0.4223 0.11763 18 4 19 58227 0.0494 0.4232 0.11658 18 4 20 58228 0.0517 0.4245 0.11545 18 4 21 58229 0.0539 0.4260 0.11445 18 4 22 58230 0.0561 0.4275 0.11356 18 4 23 58231 0.0580 0.4292 0.11255 18 4 24 58232 0.0599 0.4307 0.11136 18 4 25 58233 0.0614 0.4322 0.11005 18 4 26 58234 0.0626 0.4330 0.10861 18 4 27 58235 0.0636 0.4340 0.10710 18 4 28 58236 0.0649 0.4348 0.10551 18 4 29 58237 0.0663 0.4357 0.10407 18 4 30 58238 0.0676 0.4367 0.10278 18 5 1 58239 0.0688 0.4377 0.10163 _______________________________________________________________________ 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 = 0.1080 + 0.0178 cos A + 0.1379 sin A - 0.0001 cos C - 0.0276 sin C y = 0.3456 + 0.1308 cos A - 0.0152 sin A - 0.0276 cos C + 0.0001 sin C UT1-UTC = 0.1043 - 0.00075 (MJD - 58284) - (UT2-UT1) where A = 2*pi*(MJD-58276)/365.25 and C = 2*pi*(MJD-58276)/435. TAI-UTC(MJD 58277) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58276)**0.80 S t = 0.00025 (MJD-58276)**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 6 8 58277 0.1237 0.4474 0.07369 2018 6 9 58278 0.1246 0.4474 0.07282 2018 6 10 58279 0.1257 0.4472 0.07191 2018 6 11 58280 0.1270 0.4469 0.07104 2018 6 12 58281 0.1284 0.4466 0.07031 2018 6 13 58282 0.1298 0.4464 0.06975 2018 6 14 58283 0.1313 0.4461 0.06936 2018 6 15 58284 0.1328 0.4458 0.06908 2018 6 16 58285 0.1342 0.4455 0.06882 2018 6 17 58286 0.1356 0.4451 0.06848 2018 6 18 58287 0.1370 0.4448 0.06799 2018 6 19 58288 0.1385 0.4443 0.06736 2018 6 20 58289 0.1399 0.4439 0.06666 2018 6 21 58290 0.1413 0.4435 0.06595 2018 6 22 58291 0.1428 0.4430 0.06529 2018 6 23 58292 0.1442 0.4425 0.06473 2018 6 24 58293 0.1457 0.4420 0.06432 2018 6 25 58294 0.1471 0.4416 0.06408 2018 6 26 58295 0.1485 0.4411 0.06400 2018 6 27 58296 0.1498 0.4406 0.06407 2018 6 28 58297 0.1512 0.4400 0.06427 2018 6 29 58298 0.1525 0.4395 0.06456 2018 6 30 58299 0.1538 0.4389 0.06489 2018 7 1 58300 0.1552 0.4383 0.06521 2018 7 2 58301 0.1565 0.4376 0.06548 2018 7 3 58302 0.1578 0.4369 0.06565 2018 7 4 58303 0.1591 0.4362 0.06572 2018 7 5 58304 0.1604 0.4355 0.06567 2018 7 6 58305 0.1617 0.4348 0.06552 2018 7 7 58306 0.1630 0.4340 0.06530 2018 7 8 58307 0.1643 0.4332 0.06507 2018 7 9 58308 0.1655 0.4324 0.06487 2018 7 10 58309 0.1668 0.4316 0.06475 2018 7 11 58310 0.1680 0.4307 0.06475 2018 7 12 58311 0.1692 0.4299 0.06484 2018 7 13 58312 0.1704 0.4290 0.06498 2018 7 14 58313 0.1716 0.4281 0.06508 2018 7 15 58314 0.1727 0.4272 0.06508 2018 7 16 58315 0.1739 0.4262 0.06497 2018 7 17 58316 0.1750 0.4253 0.06476 2018 7 18 58317 0.1761 0.4243 0.06453 2018 7 19 58318 0.1772 0.4233 0.06433 2018 7 20 58319 0.1783 0.4223 0.06423 2018 7 21 58320 0.1793 0.4213 0.06428 2018 7 22 58321 0.1803 0.4202 0.06448 2018 7 23 58322 0.1814 0.4192 0.06484 2018 7 24 58323 0.1823 0.4181 0.06534 2018 7 25 58324 0.1833 0.4170 0.06593 2018 7 26 58325 0.1843 0.4159 0.06659 2018 7 27 58326 0.1852 0.4148 0.06726 2018 7 28 58327 0.1861 0.4136 0.06790 2018 7 29 58328 0.1870 0.4125 0.06847 2018 7 30 58329 0.1878 0.4113 0.06893 2018 7 31 58330 0.1887 0.4101 0.06927 2018 8 1 58331 0.1895 0.4089 0.06948 2018 8 2 58332 0.1903 0.4077 0.06959 2018 8 3 58333 0.1910 0.4065 0.06962 2018 8 4 58334 0.1918 0.4052 0.06962 2018 8 5 58335 0.1925 0.4040 0.06964 2018 8 6 58336 0.1932 0.4027 0.06972 2018 8 7 58337 0.1939 0.4014 0.06988 2018 8 8 58338 0.1945 0.4001 0.07012 2018 8 9 58339 0.1951 0.3988 0.07041 2018 8 10 58340 0.1957 0.3975 0.07065 2018 8 11 58341 0.1963 0.3962 0.07078 2018 8 12 58342 0.1969 0.3949 0.07074 2018 8 13 58343 0.1974 0.3935 0.07053 2018 8 14 58344 0.1979 0.3922 0.07019 2018 8 15 58345 0.1983 0.3908 0.06982 2018 8 16 58346 0.1988 0.3895 0.06950 2018 8 17 58347 0.1992 0.3881 0.06928 2018 8 18 58348 0.1996 0.3867 0.06920 2018 8 19 58349 0.1999 0.3853 0.06926 2018 8 20 58350 0.2003 0.3840 0.06943 2018 8 21 58351 0.2006 0.3826 0.06969 2018 8 22 58352 0.2009 0.3812 0.06999 2018 8 23 58353 0.2011 0.3797 0.07029 2018 8 24 58354 0.2014 0.3783 0.07055 2018 8 25 58355 0.2016 0.3769 0.07072 2018 8 26 58356 0.2017 0.3755 0.07078 2018 8 27 58357 0.2019 0.3741 0.07071 2018 8 28 58358 0.2020 0.3726 0.07051 2018 8 29 58359 0.2021 0.3712 0.07019 2018 8 30 58360 0.2021 0.3698 0.06979 2018 8 31 58361 0.2022 0.3683 0.06935 2018 9 1 58362 0.2022 0.3669 0.06893 2018 9 2 58363 0.2022 0.3655 0.06857 2018 9 3 58364 0.2021 0.3640 0.06828 2018 9 4 58365 0.2020 0.3626 0.06807 2018 9 5 58366 0.2019 0.3612 0.06789 2018 9 6 58367 0.2018 0.3597 0.06769 2018 9 7 58368 0.2017 0.3583 0.06739 2018 9 8 58369 0.2015 0.3569 0.06693 2018 9 9 58370 0.2013 0.3554 0.06626 2018 9 10 58371 0.2010 0.3540 0.06542 2018 9 11 58372 0.2008 0.3526 0.06448 2018 9 12 58373 0.2005 0.3512 0.06354 2018 9 13 58374 0.2002 0.3498 0.06268 2018 9 14 58375 0.1998 0.3483 0.06196 2018 9 15 58376 0.1994 0.3469 0.06140 2018 9 16 58377 0.1990 0.3455 0.06099 2018 9 17 58378 0.1986 0.3441 0.06068 2018 9 18 58379 0.1982 0.3427 0.06045 2018 9 19 58380 0.1977 0.3414 0.06022 2018 9 20 58381 0.1972 0.3400 0.05997 2018 9 21 58382 0.1966 0.3386 0.05964 2018 9 22 58383 0.1961 0.3372 0.05919 2018 9 23 58384 0.1955 0.3359 0.05861 2018 9 24 58385 0.1949 0.3345 0.05788 2018 9 25 58386 0.1942 0.3332 0.05703 2018 9 26 58387 0.1936 0.3319 0.05607 2018 9 27 58388 0.1929 0.3306 0.05507 2018 9 28 58389 0.1922 0.3293 0.05408 2018 9 29 58390 0.1915 0.3280 0.05314 2018 9 30 58391 0.1907 0.3267 0.05230 2018 10 1 58392 0.1899 0.3254 0.05155 2018 10 2 58393 0.1891 0.3241 0.05088 2018 10 3 58394 0.1883 0.3229 0.05021 2018 10 4 58395 0.1874 0.3216 0.04948 2018 10 5 58396 0.1865 0.3204 0.04862 2018 10 6 58397 0.1856 0.3192 0.04758 2018 10 7 58398 0.1847 0.3180 0.04636 2018 10 8 58399 0.1838 0.3168 0.04501 2018 10 9 58400 0.1828 0.3157 0.04360 2018 10 10 58401 0.1818 0.3145 0.04224 2018 10 11 58402 0.1808 0.3134 0.04100 2018 10 12 58403 0.1798 0.3122 0.03992 2018 10 13 58404 0.1787 0.3111 0.03902 2018 10 14 58405 0.1776 0.3100 0.03827 2018 10 15 58406 0.1766 0.3090 0.03763 2018 10 16 58407 0.1754 0.3079 0.03705 2018 10 17 58408 0.1743 0.3069 0.03647 2018 10 18 58409 0.1731 0.3058 0.03585 2018 10 19 58410 0.1720 0.3048 0.03513 2018 10 20 58411 0.1708 0.3038 0.03430 2018 10 21 58412 0.1696 0.3029 0.03333 2018 10 22 58413 0.1683 0.3019 0.03223 2018 10 23 58414 0.1671 0.3010 0.03102 2018 10 24 58415 0.1658 0.3001 0.02974 2018 10 25 58416 0.1646 0.2992 0.02845 2018 10 26 58417 0.1633 0.2983 0.02722 2018 10 27 58418 0.1619 0.2975 0.02609 2018 10 28 58419 0.1606 0.2966 0.02508 2018 10 29 58420 0.1593 0.2958 0.02418 2018 10 30 58421 0.1579 0.2950 0.02332 2018 10 31 58422 0.1565 0.2942 0.02245 2018 11 1 58423 0.1552 0.2935 0.02149 2018 11 2 58424 0.1538 0.2928 0.02038 2018 11 3 58425 0.1523 0.2921 0.01912 2018 11 4 58426 0.1509 0.2914 0.01773 2018 11 5 58427 0.1495 0.2907 0.01626 2018 11 6 58428 0.1480 0.2901 0.01480 2018 11 7 58429 0.1466 0.2895 0.01344 2018 11 8 58430 0.1451 0.2889 0.01222 2018 11 9 58431 0.1436 0.2883 0.01119 2018 11 10 58432 0.1421 0.2878 0.01032 2018 11 11 58433 0.1406 0.2872 0.00959 2018 11 12 58434 0.1391 0.2867 0.00896 2018 11 13 58435 0.1376 0.2863 0.00837 2018 11 14 58436 0.1360 0.2858 0.00777 2018 11 15 58437 0.1345 0.2854 0.00710 2018 11 16 58438 0.1330 0.2850 0.00634 2018 11 17 58439 0.1314 0.2846 0.00546 2018 11 18 58440 0.1299 0.2843 0.00446 2018 11 19 58441 0.1283 0.2839 0.00335 2018 11 20 58442 0.1267 0.2836 0.00216 2018 11 21 58443 0.1251 0.2833 0.00093 2018 11 22 58444 0.1236 0.2831 -0.00027 2018 11 23 58445 0.1220 0.2829 -0.00138 2018 11 24 58446 0.1204 0.2826 -0.00236 2018 11 25 58447 0.1188 0.2825 -0.00321 2018 11 26 58448 0.1172 0.2823 -0.00398 2018 11 27 58449 0.1156 0.2822 -0.00474 2018 11 28 58450 0.1140 0.2821 -0.00555 2018 11 29 58451 0.1124 0.2820 -0.00648 2018 11 30 58452 0.1108 0.2819 -0.00754 2018 12 1 58453 0.1092 0.2819 -0.00873 2018 12 2 58454 0.1076 0.2819 -0.00997 2018 12 3 58455 0.1060 0.2819 -0.01122 2018 12 4 58456 0.1044 0.2820 -0.01238 2018 12 5 58457 0.1028 0.2821 -0.01341 2018 12 6 58458 0.1012 0.2822 -0.01428 2018 12 7 58459 0.0996 0.2823 -0.01497 2018 12 8 58460 0.0980 0.2824 -0.01550 2018 12 9 58461 0.0965 0.2826 -0.01593 2018 12 10 58462 0.0949 0.2828 -0.01629 2018 12 11 58463 0.0933 0.2830 -0.01663 2018 12 12 58464 0.0917 0.2833 -0.01701 2018 12 13 58465 0.0902 0.2836 -0.01747 2018 12 14 58466 0.0886 0.2839 -0.01804 2018 12 15 58467 0.0871 0.2842 -0.01872 2018 12 16 58468 0.0855 0.2845 -0.01951 2018 12 17 58469 0.0840 0.2849 -0.02039 2018 12 18 58470 0.0824 0.2853 -0.02133 2018 12 19 58471 0.0809 0.2857 -0.02231 2018 12 20 58472 0.0794 0.2862 -0.02327 2018 12 21 58473 0.0779 0.2867 -0.02418 2018 12 22 58474 0.0764 0.2872 -0.02503 2018 12 23 58475 0.0749 0.2877 -0.02583 2018 12 24 58476 0.0734 0.2882 -0.02663 2018 12 25 58477 0.0720 0.2888 -0.02751 2018 12 26 58478 0.0705 0.2894 -0.02854 2018 12 27 58479 0.0691 0.2900 -0.02972 2018 12 28 58480 0.0677 0.2906 -0.03103 2018 12 29 58481 0.0662 0.2913 -0.03241 2018 12 30 58482 0.0648 0.2920 -0.03376 2018 12 31 58483 0.0635 0.2927 -0.03501 2019 1 1 58484 0.0621 0.2934 -0.03610 2019 1 2 58485 0.0607 0.2942 -0.03699 2019 1 3 58486 0.0594 0.2949 -0.03768 2019 1 4 58487 0.0581 0.2957 -0.03821 2019 1 5 58488 0.0567 0.2966 -0.03862 2019 1 6 58489 0.0554 0.2974 -0.03896 2019 1 7 58490 0.0542 0.2983 -0.03929 2019 1 8 58491 0.0529 0.2991 -0.03966 2019 1 9 58492 0.0517 0.3000 -0.04013 2019 1 10 58493 0.0504 0.3010 -0.04074 2019 1 11 58494 0.0492 0.3019 -0.04150 2019 1 12 58495 0.0480 0.3029 -0.04238 2019 1 13 58496 0.0469 0.3038 -0.04339 2019 1 14 58497 0.0457 0.3048 -0.04449 2019 1 15 58498 0.0446 0.3059 -0.04562 2019 1 16 58499 0.0435 0.3069 -0.04671 2019 1 17 58500 0.0424 0.3080 -0.04769 2019 1 18 58501 0.0413 0.3090 -0.04854 2019 1 19 58502 0.0402 0.3101 -0.04927 2019 1 20 58503 0.0392 0.3112 -0.04993 2019 1 21 58504 0.0382 0.3123 -0.05057 2019 1 22 58505 0.0372 0.3135 -0.05134 2019 1 23 58506 0.0363 0.3146 -0.05229 2019 1 24 58507 0.0353 0.3158 -0.05343 2019 1 25 58508 0.0344 0.3170 -0.05469 2019 1 26 58509 0.0335 0.3182 -0.05596 2019 1 27 58510 0.0326 0.3194 -0.05716 2019 1 28 58511 0.0318 0.3207 -0.05825 2019 1 29 58512 0.0310 0.3219 -0.05915 2019 1 30 58513 0.0301 0.3232 -0.05996 2019 1 31 58514 0.0294 0.3244 -0.06064 2019 2 1 58515 0.0286 0.3257 -0.06121 2019 2 2 58516 0.0279 0.3270 -0.06175 2019 2 3 58517 0.0272 0.3283 -0.06227 2019 2 4 58518 0.0265 0.3297 -0.06282 2019 2 5 58519 0.0259 0.3310 -0.06348 2019 2 6 58520 0.0252 0.3324 -0.06429 2019 2 7 58521 0.0246 0.3337 -0.06517 2019 2 8 58522 0.0241 0.3351 -0.06616 2019 2 9 58523 0.0235 0.3365 -0.06726 2019 2 10 58524 0.0230 0.3378 -0.06838 2019 2 11 58525 0.0225 0.3392 -0.06950 2019 2 12 58526 0.0220 0.3406 -0.07056 2019 2 13 58527 0.0216 0.3421 -0.07151 2019 2 14 58528 0.0212 0.3435 -0.07235 2019 2 15 58529 0.0208 0.3449 -0.07311 2019 2 16 58530 0.0204 0.3463 -0.07376 2019 2 17 58531 0.0201 0.3478 -0.07441 2019 2 18 58532 0.0198 0.3492 -0.07511 2019 2 19 58533 0.0195 0.3507 -0.07600 2019 2 20 58534 0.0193 0.3521 -0.07713 2019 2 21 58535 0.0191 0.3536 -0.07844 2019 2 22 58536 0.0189 0.3551 -0.07982 2019 2 23 58537 0.0187 0.3565 -0.08120 2019 2 24 58538 0.0186 0.3580 -0.08248 2019 2 25 58539 0.0185 0.3595 -0.08357 2019 2 26 58540 0.0184 0.3609 -0.08452 2019 2 27 58541 0.0183 0.3624 -0.08534 2019 2 28 58542 0.0183 0.3639 -0.08617 2019 3 1 58543 0.0183 0.3654 -0.08697 2019 3 2 58544 0.0184 0.3669 -0.08775 2019 3 3 58545 0.0184 0.3684 -0.08848 2019 3 4 58546 0.0185 0.3698 -0.08924 2019 3 5 58547 0.0186 0.3713 -0.09007 2019 3 6 58548 0.0188 0.3728 -0.09106 2019 3 7 58549 0.0190 0.3743 -0.09221 2019 3 8 58550 0.0192 0.3758 -0.09348 2019 3 9 58551 0.0194 0.3772 -0.09486 2019 3 10 58552 0.0197 0.3787 -0.09627 2019 3 11 58553 0.0199 0.3802 -0.09772 2019 3 12 58554 0.0203 0.3816 -0.09915 2019 3 13 58555 0.0206 0.3831 -0.10047 2019 3 14 58556 0.0210 0.3845 -0.10167 2019 3 15 58557 0.0214 0.3860 -0.10272 2019 3 16 58558 0.0218 0.3874 -0.10377 2019 3 17 58559 0.0223 0.3889 -0.10487 2019 3 18 58560 0.0227 0.3903 -0.10612 2019 3 19 58561 0.0232 0.3917 -0.10760 2019 3 20 58562 0.0238 0.3931 -0.10930 2019 3 21 58563 0.0243 0.3946 -0.11117 2019 3 22 58564 0.0249 0.3960 -0.11310 2019 3 23 58565 0.0256 0.3973 -0.11497 2019 3 24 58566 0.0262 0.3987 -0.11670 2019 3 25 58567 0.0269 0.4001 -0.11821 2019 3 26 58568 0.0276 0.4015 -0.11947 2019 3 27 58569 0.0283 0.4028 -0.12056 2019 3 28 58570 0.0290 0.4042 -0.12157 2019 3 29 58571 0.0298 0.4055 -0.12254 2019 3 30 58572 0.0306 0.4068 -0.12350 2019 3 31 58573 0.0314 0.4081 -0.12443 2019 4 1 58574 0.0322 0.4094 -0.12546 2019 4 2 58575 0.0331 0.4107 -0.12656 2019 4 3 58576 0.0340 0.4119 -0.12775 2019 4 4 58577 0.0349 0.4132 -0.12905 2019 4 5 58578 0.0359 0.4144 -0.13046 2019 4 6 58579 0.0368 0.4157 -0.13195 2019 4 7 58580 0.0378 0.4169 -0.13336 2019 4 8 58581 0.0388 0.4181 -0.13475 2019 4 9 58582 0.0399 0.4193 -0.13611 2019 4 10 58583 0.0409 0.4204 -0.13733 2019 4 11 58584 0.0420 0.4216 -0.13844 2019 4 12 58585 0.0431 0.4227 -0.13954 2019 4 13 58586 0.0442 0.4238 -0.14063 2019 4 14 58587 0.0454 0.4249 -0.14186 2019 4 15 58588 0.0465 0.4260 -0.14329 2019 4 16 58589 0.0477 0.4270 -0.14493 2019 4 17 58590 0.0489 0.4281 -0.14681 2019 4 18 58591 0.0501 0.4291 -0.14883 2019 4 19 58592 0.0514 0.4301 -0.15093 2019 4 20 58593 0.0526 0.4311 -0.15296 2019 4 21 58594 0.0539 0.4321 -0.15479 2019 4 22 58595 0.0552 0.4330 -0.15641 2019 4 23 58596 0.0565 0.4339 -0.15784 2019 4 24 58597 0.0578 0.4348 -0.15913 2019 4 25 58598 0.0592 0.4357 -0.16040 2019 4 26 58599 0.0605 0.4366 -0.16157 2019 4 27 58600 0.0619 0.4374 -0.16274 2019 4 28 58601 0.0633 0.4382 -0.16397 2019 4 29 58602 0.0647 0.4390 -0.16530 2019 4 30 58603 0.0661 0.4398 -0.16676 2019 5 1 58604 0.0676 0.4406 -0.16836 2019 5 2 58605 0.0690 0.4413 -0.17006 2019 5 3 58606 0.0705 0.4420 -0.17178 2019 5 4 58607 0.0720 0.4427 -0.17350 2019 5 5 58608 0.0734 0.4433 -0.17512 2019 5 6 58609 0.0750 0.4440 -0.17656 2019 5 7 58610 0.0765 0.4446 -0.17782 2019 5 8 58611 0.0780 0.4452 -0.17894 2019 5 9 58612 0.0795 0.4457 -0.17999 2019 5 10 58613 0.0811 0.4463 -0.18104 2019 5 11 58614 0.0826 0.4468 -0.18215 2019 5 12 58615 0.0842 0.4473 -0.18329 2019 5 13 58616 0.0858 0.4477 -0.18462 2019 5 14 58617 0.0873 0.4482 -0.18607 2019 5 15 58618 0.0889 0.4486 -0.18765 2019 5 16 58619 0.0905 0.4490 -0.18936 2019 5 17 58620 0.0921 0.4493 -0.19111 2019 5 18 58621 0.0937 0.4497 -0.19274 2019 5 19 58622 0.0954 0.4500 -0.19420 2019 5 20 58623 0.0970 0.4503 -0.19547 2019 5 21 58624 0.0986 0.4505 -0.19647 2019 5 22 58625 0.1002 0.4508 -0.19731 2019 5 23 58626 0.1019 0.4510 -0.19809 2019 5 24 58627 0.1035 0.4512 -0.19883 2019 5 25 58628 0.1052 0.4513 -0.19955 2019 5 26 58629 0.1068 0.4515 -0.20033 2019 5 27 58630 0.1084 0.4516 -0.20117 2019 5 28 58631 0.1101 0.4516 -0.20208 2019 5 29 58632 0.1117 0.4517 -0.20313 2019 5 30 58633 0.1134 0.4517 -0.20423 2019 5 31 58634 0.1150 0.4517 -0.20525 2019 6 1 58635 0.1167 0.4517 -0.20622 2019 6 2 58636 0.1183 0.4516 -0.20714 2019 6 3 58637 0.1200 0.4515 -0.20795 2019 6 4 58638 0.1216 0.4514 -0.20859 2019 6 5 58639 0.1233 0.4513 -0.20911 2019 6 6 58640 0.1249 0.4511 -0.20954 2019 6 7 58641 0.1265 0.4510 -0.20997 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) 58257 -103.95 0.27 -12.40 0.15 58258 -103.83 0.27 -12.14 0.15 58259 -103.71 0.28 -12.00 0.15 58260 -103.59 0.43 -12.00 0.12 58261 -103.43 0.43 -12.07 0.12 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 58210 -102.2 -11.7 58211 -102.3 -11.5 58212 -102.6 -11.4 58213 -102.9 -11.4 58214 -103.1 -11.6 58215 -103.1 -11.8 58216 -102.7 -11.9 58217 -102.2 -11.9 58218 -101.7 -12.0 58219 -101.4 -11.9 58220 -101.4 -11.9 58221 -101.6 -11.7 58222 -101.7 -11.5 58223 -101.7 -11.3 58224 -101.7 -11.3 58225 -101.7 -11.6 58226 -102.0 -11.9 58227 -102.5 -12.1 58228 -102.9 -12.2 58229 -103.0 -12.1 58230 -102.9 -12.0 58231 -102.5 -12.0 58232 -101.9 -12.0 58233 -101.5 -12.0 58234 -101.3 -11.9 58235 -101.6 -11.8 58236 -102.0 -11.8 58237 -102.3 -11.9 58238 -102.4 -11.9 58239 -102.4 -11.8 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58257 -0.130 0.106 -0.150 0.154 58258 -0.143 0.106 -0.149 0.154 58259 -0.156 0.110 -0.146 0.151 58260 -0.167 0.173 -0.141 0.123 58261 -0.179 0.173 -0.135 0.123 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 58210 0.01 -0.16 58211 0.00 -0.16 58212 -0.01 -0.15 58213 -0.01 -0.15 58214 -0.02 -0.15 58215 0.01 -0.18 58216 0.02 -0.19 58217 0.04 -0.19 58218 0.06 -0.20 58219 0.05 -0.18 58220 0.04 -0.16 58221 0.02 -0.13 58222 0.03 -0.10 58223 0.05 -0.06 58224 0.07 -0.02 58225 0.09 0.01 58226 0.05 0.02 58227 -0.00 0.01 58228 -0.06 0.01 58229 -0.05 -0.02 58230 -0.02 -0.06 58231 0.01 -0.09 58232 0.04 -0.13 58233 0.01 -0.07 58234 -0.04 0.01 58235 -0.08 0.09 58236 -0.09 0.09 58237 -0.08 0.06 58238 -0.07 0.02 58239 -0.07 -0.01 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).