********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 29 March 2018 Vol. XXXI No. 013 ______________________________________________________________________ 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. 013, on 29 March 2018, we will * * transition the IERS RS/PC solution to be consistent with the 14 C04 * * EOP series for polar motion, UT1-UTC, and celestial pole offsets. * * This change will result in a jump of less than 0.1 mas in polar * * motion and 10 us in UT1-UTC. Small adjustments will be made to * * celestial pole offsets from approximately March 2017 to present * * in order to be more consistent with the 14 C04 solution. The only * * users who need to be concerned with this change are those who need * * EOP accuracy to better than 0.1 mas (~0.3 cm at the Earth's * * surface, ~1.2 cm at GPS orbit). * * * * 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 3 23 58200 0.02086 .00009 0.38104 .00009 0.144083 0.000007 18 3 24 58201 0.02225 .00009 0.38260 .00009 0.143105 0.000007 18 3 25 58202 0.02341 .00009 0.38414 .00009 0.142222 0.000006 18 3 26 58203 0.02451 .00009 0.38540 .00009 0.141367 0.000006 18 3 27 58204 0.02573 .00009 0.38640 .00009 0.140425 0.000006 18 3 28 58205 0.02701 .00009 0.38751 .00009 0.139354 0.000006 18 3 29 58206 0.02822 .00009 0.38896 .00009 0.138141 0.000005 _______________________________________________________________________ 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 = 0.1289 - 0.1303 cos A + 0.0537 sin A + 0.0258 cos C + 0.0004 sin C y = 0.3385 + 0.0494 cos A + 0.1257 sin A + 0.0004 cos C - 0.0258 sin C UT1-UTC = 0.1690 - 0.00086 (MJD - 58214) - (UT2-UT1) where A = 2*pi*(MJD-58206)/365.25 and C = 2*pi*(MJD-58206)/435. TAI-UTC(MJD 58207) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58206)**0.80 S t = 0.00025 (MJD-58206)**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 3 30 58207 0.0293 0.3904 0.13680 2018 3 31 58208 0.0303 0.3920 0.13539 2018 4 1 58209 0.0312 0.3934 0.13398 2018 4 2 58210 0.0321 0.3948 0.13266 2018 4 3 58211 0.0330 0.3960 0.13147 2018 4 4 58212 0.0339 0.3973 0.13043 2018 4 5 58213 0.0348 0.3985 0.12954 2018 4 6 58214 0.0358 0.3997 0.12879 2018 4 7 58215 0.0368 0.4010 0.12812 2018 4 8 58216 0.0377 0.4022 0.12751 2018 4 9 58217 0.0387 0.4034 0.12689 2018 4 10 58218 0.0397 0.4045 0.12622 2018 4 11 58219 0.0408 0.4055 0.12547 2018 4 12 58220 0.0418 0.4066 0.12460 2018 4 13 58221 0.0429 0.4077 0.12359 2018 4 14 58222 0.0441 0.4087 0.12244 2018 4 15 58223 0.0452 0.4097 0.12119 2018 4 16 58224 0.0463 0.4107 0.11991 2018 4 17 58225 0.0475 0.4116 0.11864 2018 4 18 58226 0.0486 0.4126 0.11745 2018 4 19 58227 0.0498 0.4136 0.11637 2018 4 20 58228 0.0510 0.4145 0.11541 2018 4 21 58229 0.0522 0.4154 0.11456 2018 4 22 58230 0.0535 0.4164 0.11376 2018 4 23 58231 0.0547 0.4173 0.11294 2018 4 24 58232 0.0559 0.4181 0.11204 2018 4 25 58233 0.0572 0.4190 0.11104 2018 4 26 58234 0.0584 0.4198 0.10994 2018 4 27 58235 0.0597 0.4206 0.10876 2018 4 28 58236 0.0610 0.4214 0.10757 2018 4 29 58237 0.0623 0.4222 0.10643 2018 4 30 58238 0.0636 0.4230 0.10539 2018 5 1 58239 0.0649 0.4237 0.10448 2018 5 2 58240 0.0663 0.4244 0.10371 2018 5 3 58241 0.0676 0.4251 0.10307 2018 5 4 58242 0.0690 0.4258 0.10252 2018 5 5 58243 0.0704 0.4264 0.10202 2018 5 6 58244 0.0718 0.4270 0.10153 2018 5 7 58245 0.0732 0.4276 0.10098 2018 5 8 58246 0.0746 0.4282 0.10035 2018 5 9 58247 0.0760 0.4288 0.09960 2018 5 10 58248 0.0775 0.4293 0.09873 2018 5 11 58249 0.0789 0.4298 0.09773 2018 5 12 58250 0.0804 0.4303 0.09662 2018 5 13 58251 0.0818 0.4308 0.09545 2018 5 14 58252 0.0833 0.4312 0.09427 2018 5 15 58253 0.0848 0.4317 0.09318 2018 5 16 58254 0.0863 0.4321 0.09222 2018 5 17 58255 0.0878 0.4324 0.09142 2018 5 18 58256 0.0893 0.4328 0.09078 2018 5 19 58257 0.0908 0.4331 0.09022 2018 5 20 58258 0.0923 0.4334 0.08968 2018 5 21 58259 0.0938 0.4337 0.08910 2018 5 22 58260 0.0954 0.4340 0.08842 2018 5 23 58261 0.0969 0.4342 0.08765 2018 5 24 58262 0.0984 0.4345 0.08682 2018 5 25 58263 0.1000 0.4346 0.08598 2018 5 26 58264 0.1015 0.4348 0.08519 2018 5 27 58265 0.1031 0.4350 0.08449 2018 5 28 58266 0.1046 0.4351 0.08394 2018 5 29 58267 0.1062 0.4352 0.08353 2018 5 30 58268 0.1078 0.4352 0.08328 2018 5 31 58269 0.1093 0.4353 0.08316 2018 6 1 58270 0.1109 0.4353 0.08312 2018 6 2 58271 0.1125 0.4353 0.08313 2018 6 3 58272 0.1140 0.4353 0.08314 2018 6 4 58273 0.1156 0.4353 0.08309 2018 6 5 58274 0.1171 0.4352 0.08294 2018 6 6 58275 0.1187 0.4351 0.08269 2018 6 7 58276 0.1203 0.4350 0.08231 2018 6 8 58277 0.1218 0.4348 0.08181 2018 6 9 58278 0.1234 0.4347 0.08122 2018 6 10 58279 0.1249 0.4345 0.08058 2018 6 11 58280 0.1265 0.4342 0.07996 2018 6 12 58281 0.1280 0.4340 0.07943 2018 6 13 58282 0.1296 0.4337 0.07903 2018 6 14 58283 0.1311 0.4335 0.07876 2018 6 15 58284 0.1327 0.4331 0.07859 2018 6 16 58285 0.1342 0.4328 0.07844 2018 6 17 58286 0.1357 0.4325 0.07823 2018 6 18 58287 0.1372 0.4321 0.07793 2018 6 19 58288 0.1387 0.4317 0.07753 2018 6 20 58289 0.1402 0.4312 0.07706 2018 6 21 58290 0.1417 0.4308 0.07658 2018 6 22 58291 0.1432 0.4303 0.07615 2018 6 23 58292 0.1447 0.4298 0.07582 2018 6 24 58293 0.1461 0.4293 0.07562 2018 6 25 58294 0.1476 0.4288 0.07558 2018 6 26 58295 0.1490 0.4282 0.07569 2018 6 27 58296 0.1505 0.4276 0.07593 2018 6 28 58297 0.1519 0.4270 0.07626 2018 6 29 58298 0.1533 0.4264 0.07664 2018 6 30 58299 0.1547 0.4257 0.07704 2018 7 1 58300 0.1561 0.4250 0.07740 2018 7 2 58301 0.1575 0.4243 0.07769 2018 7 3 58302 0.1588 0.4236 0.07787 2018 7 4 58303 0.1602 0.4229 0.07795 2018 7 5 58304 0.1615 0.4221 0.07792 2018 7 6 58305 0.1628 0.4214 0.07779 2018 7 7 58306 0.1641 0.4206 0.07761 2018 7 8 58307 0.1654 0.4197 0.07741 2018 7 9 58308 0.1667 0.4189 0.07726 2018 7 10 58309 0.1679 0.4180 0.07719 2018 7 11 58310 0.1692 0.4172 0.07723 2018 7 12 58311 0.1704 0.4163 0.07737 2018 7 13 58312 0.1716 0.4154 0.07754 2018 7 14 58313 0.1728 0.4144 0.07766 2018 7 15 58314 0.1740 0.4135 0.07766 2018 7 16 58315 0.1751 0.4125 0.07757 2018 7 17 58316 0.1762 0.4115 0.07737 2018 7 18 58317 0.1774 0.4105 0.07712 2018 7 19 58318 0.1785 0.4095 0.07689 2018 7 20 58319 0.1795 0.4084 0.07675 2018 7 21 58320 0.1806 0.4074 0.07674 2018 7 22 58321 0.1816 0.4063 0.07687 2018 7 23 58322 0.1826 0.4052 0.07716 2018 7 24 58323 0.1836 0.4041 0.07756 2018 7 25 58324 0.1846 0.4030 0.07806 2018 7 26 58325 0.1856 0.4019 0.07860 2018 7 27 58326 0.1865 0.4007 0.07915 2018 7 28 58327 0.1874 0.3996 0.07966 2018 7 29 58328 0.1883 0.3984 0.08009 2018 7 30 58329 0.1891 0.3972 0.08041 2018 7 31 58330 0.1900 0.3960 0.08059 2018 8 1 58331 0.1908 0.3948 0.08065 2018 8 2 58332 0.1916 0.3936 0.08061 2018 8 3 58333 0.1923 0.3923 0.08048 2018 8 4 58334 0.1931 0.3911 0.08032 2018 8 5 58335 0.1938 0.3898 0.08018 2018 8 6 58336 0.1945 0.3885 0.08008 2018 8 7 58337 0.1952 0.3872 0.08006 2018 8 8 58338 0.1958 0.3859 0.08012 2018 8 9 58339 0.1964 0.3846 0.08022 2018 8 10 58340 0.1970 0.3833 0.08027 2018 8 11 58341 0.1976 0.3820 0.08021 2018 8 12 58342 0.1981 0.3807 0.07997 2018 8 13 58343 0.1987 0.3793 0.07957 2018 8 14 58344 0.1991 0.3780 0.07905 2018 8 15 58345 0.1996 0.3766 0.07850 2018 8 16 58346 0.2001 0.3753 0.07801 2018 8 17 58347 0.2005 0.3739 0.07763 2018 8 18 58348 0.2008 0.3725 0.07740 2018 8 19 58349 0.2012 0.3712 0.07732 2018 8 20 58350 0.2015 0.3698 0.07737 2018 8 21 58351 0.2018 0.3684 0.07751 2018 8 22 58352 0.2021 0.3670 0.07771 2018 8 23 58353 0.2024 0.3656 0.07790 2018 8 24 58354 0.2026 0.3642 0.07806 2018 8 25 58355 0.2028 0.3628 0.07812 2018 8 26 58356 0.2030 0.3614 0.07807 2018 8 27 58357 0.2031 0.3600 0.07788 2018 8 28 58358 0.2032 0.3586 0.07754 2018 8 29 58359 0.2033 0.3572 0.07708 2018 8 30 58360 0.2034 0.3557 0.07653 2018 8 31 58361 0.2034 0.3543 0.07594 2018 9 1 58362 0.2034 0.3529 0.07536 2018 9 2 58363 0.2034 0.3515 0.07482 2018 9 3 58364 0.2033 0.3501 0.07435 2018 9 4 58365 0.2032 0.3487 0.07395 2018 9 5 58366 0.2031 0.3473 0.07359 2018 9 6 58367 0.2030 0.3459 0.07321 2018 9 7 58368 0.2028 0.3444 0.07273 2018 9 8 58369 0.2026 0.3430 0.07208 2018 9 9 58370 0.2024 0.3416 0.07124 2018 9 10 58371 0.2022 0.3402 0.07023 2018 9 11 58372 0.2019 0.3389 0.06912 2018 9 12 58373 0.2016 0.3375 0.06801 2018 9 13 58374 0.2013 0.3361 0.06699 2018 9 14 58375 0.2009 0.3347 0.06611 2018 9 15 58376 0.2005 0.3333 0.06540 2018 9 16 58377 0.2001 0.3320 0.06485 2018 9 17 58378 0.1997 0.3306 0.06442 2018 9 18 58379 0.1992 0.3293 0.06406 2018 9 19 58380 0.1987 0.3279 0.06372 2018 9 20 58381 0.1982 0.3266 0.06336 2018 9 21 58382 0.1977 0.3252 0.06293 2018 9 22 58383 0.1971 0.3239 0.06239 2018 9 23 58384 0.1965 0.3226 0.06171 2018 9 24 58385 0.1959 0.3213 0.06090 2018 9 25 58386 0.1953 0.3200 0.05996 2018 9 26 58387 0.1946 0.3187 0.05892 2018 9 27 58388 0.1939 0.3175 0.05784 2018 9 28 58389 0.1932 0.3162 0.05678 2018 9 29 58390 0.1924 0.3150 0.05579 2018 9 30 58391 0.1916 0.3137 0.05490 2018 10 1 58392 0.1909 0.3125 0.05413 2018 10 2 58393 0.1900 0.3113 0.05343 2018 10 3 58394 0.1892 0.3101 0.05276 2018 10 4 58395 0.1883 0.3089 0.05205 2018 10 5 58396 0.1874 0.3077 0.05120 2018 10 6 58397 0.1865 0.3066 0.05019 2018 10 7 58398 0.1856 0.3054 0.04899 2018 10 8 58399 0.1846 0.3043 0.04765 2018 10 9 58400 0.1836 0.3032 0.04626 2018 10 10 58401 0.1826 0.3021 0.04492 2018 10 11 58402 0.1816 0.3010 0.04370 2018 10 12 58403 0.1806 0.3000 0.04265 2018 10 13 58404 0.1795 0.2989 0.04179 2018 10 14 58405 0.1784 0.2979 0.04110 2018 10 15 58406 0.1773 0.2969 0.04051 2018 10 16 58407 0.1762 0.2959 0.03999 2018 10 17 58408 0.1750 0.2949 0.03946 2018 10 18 58409 0.1738 0.2939 0.03885 2018 10 19 58410 0.1726 0.2930 0.03813 2018 10 20 58411 0.1714 0.2921 0.03725 2018 10 21 58412 0.1702 0.2912 0.03620 2018 10 22 58413 0.1690 0.2903 0.03500 2018 10 23 58414 0.1677 0.2894 0.03368 2018 10 24 58415 0.1664 0.2886 0.03227 2018 10 25 58416 0.1651 0.2877 0.03085 2018 10 26 58417 0.1638 0.2869 0.02948 2018 10 27 58418 0.1625 0.2861 0.02823 2018 10 28 58419 0.1611 0.2854 0.02712 2018 10 29 58420 0.1598 0.2846 0.02612 2018 10 30 58421 0.1584 0.2839 0.02517 2018 10 31 58422 0.1570 0.2832 0.02420 2018 11 1 58423 0.1556 0.2825 0.02313 2018 11 2 58424 0.1542 0.2819 0.02192 2018 11 3 58425 0.1527 0.2813 0.02056 2018 11 4 58426 0.1513 0.2806 0.01905 2018 11 5 58427 0.1498 0.2801 0.01749 2018 11 6 58428 0.1484 0.2795 0.01596 2018 11 7 58429 0.1469 0.2789 0.01452 2018 11 8 58430 0.1454 0.2784 0.01319 2018 11 9 58431 0.1439 0.2779 0.01201 2018 11 10 58432 0.1424 0.2775 0.01100 2018 11 11 58433 0.1408 0.2770 0.01019 2018 11 12 58434 0.1393 0.2766 0.00947 2018 11 13 58435 0.1378 0.2762 0.00881 2018 11 14 58436 0.1362 0.2758 0.00818 2018 11 15 58437 0.1347 0.2755 0.00747 2018 11 16 58438 0.1331 0.2751 0.00663 2018 11 17 58439 0.1315 0.2748 0.00564 2018 11 18 58440 0.1299 0.2745 0.00459 2018 11 19 58441 0.1284 0.2743 0.00339 2018 11 20 58442 0.1268 0.2741 0.00202 2018 11 21 58443 0.1252 0.2739 0.00064 2018 11 22 58444 0.1236 0.2737 -0.00069 2018 11 23 58445 0.1220 0.2735 -0.00199 2018 11 24 58446 0.1204 0.2734 -0.00314 2018 11 25 58447 0.1187 0.2733 -0.00419 2018 11 26 58448 0.1171 0.2732 -0.00520 2018 11 27 58449 0.1155 0.2732 -0.00620 2018 11 28 58450 0.1139 0.2731 -0.00731 2018 11 29 58451 0.1123 0.2731 -0.00858 2018 11 30 58452 0.1107 0.2731 -0.01005 2018 12 1 58453 0.1090 0.2732 -0.01168 2018 12 2 58454 0.1074 0.2733 -0.01336 2018 12 3 58455 0.1058 0.2734 -0.01506 2018 12 4 58456 0.1042 0.2735 -0.01671 2018 12 5 58457 0.1026 0.2736 -0.01825 2018 12 6 58458 0.1009 0.2738 -0.01971 2018 12 7 58459 0.0993 0.2740 -0.02095 2018 12 8 58460 0.0977 0.2742 -0.02203 2018 12 9 58461 0.0961 0.2745 -0.02301 2018 12 10 58462 0.0945 0.2748 -0.02394 2018 12 11 58463 0.0929 0.2751 -0.02489 2018 12 12 58464 0.0913 0.2754 -0.02591 2018 12 13 58465 0.0898 0.2757 -0.02704 2018 12 14 58466 0.0882 0.2761 -0.02825 2018 12 15 58467 0.0866 0.2765 -0.02958 2018 12 16 58468 0.0850 0.2769 -0.03098 2018 12 17 58469 0.0835 0.2774 -0.03240 2018 12 18 58470 0.0819 0.2778 -0.03383 2018 12 19 58471 0.0804 0.2783 -0.03526 2018 12 20 58472 0.0789 0.2789 -0.03666 2018 12 21 58473 0.0773 0.2794 -0.03798 2018 12 22 58474 0.0758 0.2800 -0.03919 2018 12 23 58475 0.0743 0.2806 -0.04021 2018 12 24 58476 0.0728 0.2812 -0.04121 2018 12 25 58477 0.0714 0.2818 -0.04222 2018 12 26 58478 0.0699 0.2825 -0.04336 2018 12 27 58479 0.0684 0.2832 -0.04473 2018 12 28 58480 0.0670 0.2839 -0.04633 2018 12 29 58481 0.0656 0.2846 -0.04806 2018 12 30 58482 0.0642 0.2853 -0.04981 2018 12 31 58483 0.0627 0.2861 -0.05152 2019 1 1 58484 0.0614 0.2869 -0.05304 2019 1 2 58485 0.0600 0.2877 -0.05437 2019 1 3 58486 0.0586 0.2886 -0.05555 2019 1 4 58487 0.0573 0.2894 -0.05656 2019 1 5 58488 0.0560 0.2903 -0.05741 2019 1 6 58489 0.0547 0.2912 -0.05819 2019 1 7 58490 0.0534 0.2921 -0.05891 2019 1 8 58491 0.0521 0.2931 -0.05965 2019 1 9 58492 0.0508 0.2940 -0.06052 2019 1 10 58493 0.0496 0.2950 -0.06148 2019 1 11 58494 0.0484 0.2960 -0.06247 2019 1 12 58495 0.0472 0.2970 -0.06357 2019 1 13 58496 0.0460 0.2981 -0.06479 2019 1 14 58497 0.0449 0.2991 -0.06609 2019 1 15 58498 0.0437 0.3002 -0.06741 2019 1 16 58499 0.0426 0.3013 -0.06869 2019 1 17 58500 0.0415 0.3024 -0.06988 2019 1 18 58501 0.0404 0.3035 -0.07093 2019 1 19 58502 0.0394 0.3047 -0.07191 2019 1 20 58503 0.0383 0.3058 -0.07285 2019 1 21 58504 0.0373 0.3070 -0.07385 2019 1 22 58505 0.0363 0.3082 -0.07487 2019 1 23 58506 0.0354 0.3094 -0.07611 2019 1 24 58507 0.0344 0.3106 -0.07758 2019 1 25 58508 0.0335 0.3118 -0.07917 2019 1 26 58509 0.0326 0.3131 -0.08087 2019 1 27 58510 0.0317 0.3143 -0.08252 2019 1 28 58511 0.0309 0.3156 -0.08404 2019 1 29 58512 0.0301 0.3169 -0.08544 2019 1 30 58513 0.0293 0.3182 -0.08672 2019 1 31 58514 0.0285 0.3195 -0.08784 2019 2 1 58515 0.0277 0.3209 -0.08885 2019 2 2 58516 0.0270 0.3222 -0.08986 2019 2 3 58517 0.0263 0.3235 -0.09088 2019 2 4 58518 0.0256 0.3249 -0.09200 2019 2 5 58519 0.0250 0.3263 -0.09322 2019 2 6 58520 0.0244 0.3277 -0.09453 2019 2 7 58521 0.0238 0.3290 -0.09599 2019 2 8 58522 0.0232 0.3304 -0.09760 2019 2 9 58523 0.0227 0.3318 -0.09931 2019 2 10 58524 0.0222 0.3333 -0.10106 2019 2 11 58525 0.0217 0.3347 -0.10280 2019 2 12 58526 0.0212 0.3361 -0.10447 2019 2 13 58527 0.0208 0.3376 -0.10601 2019 2 14 58528 0.0204 0.3390 -0.10746 2019 2 15 58529 0.0200 0.3405 -0.10890 2019 2 16 58530 0.0197 0.3419 -0.11031 2019 2 17 58531 0.0194 0.3434 -0.11172 2019 2 18 58532 0.0191 0.3448 -0.11321 2019 2 19 58533 0.0188 0.3463 -0.11482 2019 2 20 58534 0.0186 0.3478 -0.11661 2019 2 21 58535 0.0184 0.3493 -0.11858 2019 2 22 58536 0.0182 0.3507 -0.12065 2019 2 23 58537 0.0181 0.3522 -0.12278 2019 2 24 58538 0.0180 0.3537 -0.12484 2019 2 25 58539 0.0179 0.3552 -0.12676 2019 2 26 58540 0.0179 0.3567 -0.12840 2019 2 27 58541 0.0178 0.3582 -0.12987 2019 2 28 58542 0.0178 0.3597 -0.13123 2019 3 1 58543 0.0179 0.3612 -0.13247 2019 3 2 58544 0.0179 0.3626 -0.13366 2019 3 3 58545 0.0180 0.3641 -0.13483 2019 3 4 58546 0.0181 0.3656 -0.13602 2019 3 5 58547 0.0183 0.3671 -0.13727 2019 3 6 58548 0.0185 0.3686 -0.13874 2019 3 7 58549 0.0187 0.3701 -0.14036 2019 3 8 58550 0.0189 0.3715 -0.14203 2019 3 9 58551 0.0192 0.3730 -0.14370 2019 3 10 58552 0.0195 0.3745 -0.14536 2019 3 11 58553 0.0198 0.3759 -0.14706 2019 3 12 58554 0.0201 0.3774 -0.14871 2019 3 13 58555 0.0205 0.3788 -0.15025 2019 3 14 58556 0.0209 0.3803 -0.15168 2019 3 15 58557 0.0214 0.3817 -0.15308 2019 3 16 58558 0.0218 0.3832 -0.15452 2019 3 17 58559 0.0223 0.3846 -0.15611 2019 3 18 58560 0.0228 0.3860 -0.15785 2019 3 19 58561 0.0234 0.3874 -0.15981 2019 3 20 58562 0.0240 0.3888 -0.16198 2019 3 21 58563 0.0246 0.3902 -0.16430 2019 3 22 58564 0.0252 0.3916 -0.16666 2019 3 23 58565 0.0259 0.3930 -0.16894 2019 3 24 58566 0.0266 0.3943 -0.17115 2019 3 25 58567 0.0273 0.3957 -0.17318 2019 3 26 58568 0.0280 0.3970 -0.17502 2019 3 27 58569 0.0288 0.3983 -0.17663 2019 3 28 58570 0.0296 0.3996 -0.17802 2019 3 29 58571 0.0304 0.4009 -0.17932 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) 58184 -103.50 0.32 -10.05 0.20 58185 -103.88 0.32 -10.19 0.20 58186 -104.22 0.32 -10.45 0.20 58187 -104.33 0.11 -10.67 0.24 58188 -104.09 0.13 -10.78 0.23 58189 -103.62 0.13 -10.81 0.23 58190 -103.19 0.18 -10.83 0.20 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58184 0.144 0.128 -0.151 0.198 58185 0.113 0.128 -0.181 0.198 58186 0.075 0.128 -0.213 0.198 58187 0.038 0.043 -0.233 0.238 58188 0.002 0.053 -0.243 0.228 58189 -0.033 0.053 -0.244 0.228 58190 -0.067 0.071 -0.240 0.203 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).