********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 19 April 2018 Vol. XXXI No. 016 ______________________________________________________________________ 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 * * * * 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 4 13 58221 0.03921 .00009 0.41560 .00009 0.123771 0.000014 18 4 14 58222 0.04015 .00009 0.41721 .00009 0.122727 0.000014 18 4 15 58223 0.04191 .00009 0.41877 .00009 0.121542 0.000013 18 4 16 58224 0.04399 .00009 0.42024 .00009 0.120208 0.000010 18 4 17 58225 0.04589 .00009 0.42144 .00009 0.118847 0.000010 18 4 18 58226 0.04760 .00009 0.42233 .00009 0.117598 0.000009 18 4 19 58227 0.04943 .00009 0.42314 .00009 0.116473 0.000055 _______________________________________________________________________ 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 = 0.1191 - 0.0998 cos A + 0.1048 sin A + 0.0269 cos C - 0.0157 sin C y = 0.3400 + 0.0973 cos A + 0.0982 sin A - 0.0157 cos C - 0.0269 sin C UT1-UTC = 0.1570 - 0.00082 (MJD - 58235) - (UT2-UT1) where A = 2*pi*(MJD-58227)/365.25 and C = 2*pi*(MJD-58227)/435. TAI-UTC(MJD 58228) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58227)**0.80 S t = 0.00025 (MJD-58227)**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 4 20 58228 0.0512 0.4241 0.11542 2018 4 21 58229 0.0528 0.4251 0.11444 2018 4 22 58230 0.0544 0.4262 0.11349 2018 4 23 58231 0.0560 0.4272 0.11250 2018 4 24 58232 0.0574 0.4282 0.11140 2018 4 25 58233 0.0588 0.4293 0.11014 2018 4 26 58234 0.0602 0.4303 0.10874 2018 4 27 58235 0.0615 0.4312 0.10726 2018 4 28 58236 0.0629 0.4321 0.10578 2018 4 29 58237 0.0644 0.4329 0.10439 2018 4 30 58238 0.0658 0.4337 0.10316 2018 5 1 58239 0.0673 0.4346 0.10211 2018 5 2 58240 0.0687 0.4354 0.10126 2018 5 3 58241 0.0702 0.4362 0.10060 2018 5 4 58242 0.0718 0.4369 0.10010 2018 5 5 58243 0.0733 0.4376 0.09973 2018 5 6 58244 0.0749 0.4383 0.09941 2018 5 7 58245 0.0765 0.4388 0.09907 2018 5 8 58246 0.0781 0.4394 0.09866 2018 5 9 58247 0.0797 0.4399 0.09817 2018 5 10 58248 0.0814 0.4404 0.09755 2018 5 11 58249 0.0830 0.4408 0.09681 2018 5 12 58250 0.0846 0.4413 0.09596 2018 5 13 58251 0.0862 0.4417 0.09505 2018 5 14 58252 0.0879 0.4421 0.09413 2018 5 15 58253 0.0895 0.4425 0.09327 2018 5 16 58254 0.0911 0.4428 0.09253 2018 5 17 58255 0.0928 0.4432 0.09195 2018 5 18 58256 0.0944 0.4435 0.09152 2018 5 19 58257 0.0960 0.4437 0.09115 2018 5 20 58258 0.0977 0.4440 0.09077 2018 5 21 58259 0.0993 0.4442 0.09034 2018 5 22 58260 0.1009 0.4444 0.08980 2018 5 23 58261 0.1026 0.4446 0.08918 2018 5 24 58262 0.1043 0.4447 0.08850 2018 5 25 58263 0.1059 0.4448 0.08782 2018 5 26 58264 0.1076 0.4449 0.08720 2018 5 27 58265 0.1093 0.4449 0.08668 2018 5 28 58266 0.1109 0.4450 0.08630 2018 5 29 58267 0.1126 0.4450 0.08608 2018 5 30 58268 0.1143 0.4449 0.08601 2018 5 31 58269 0.1159 0.4449 0.08607 2018 6 1 58270 0.1176 0.4448 0.08621 2018 6 2 58271 0.1192 0.4446 0.08639 2018 6 3 58272 0.1209 0.4445 0.08656 2018 6 4 58273 0.1226 0.4443 0.08666 2018 6 5 58274 0.1242 0.4441 0.08667 2018 6 6 58275 0.1259 0.4439 0.08654 2018 6 7 58276 0.1275 0.4437 0.08627 2018 6 8 58277 0.1291 0.4434 0.08587 2018 6 9 58278 0.1308 0.4431 0.08536 2018 6 10 58279 0.1324 0.4428 0.08479 2018 6 11 58280 0.1340 0.4424 0.08424 2018 6 12 58281 0.1356 0.4421 0.08377 2018 6 13 58282 0.1372 0.4417 0.08343 2018 6 14 58283 0.1388 0.4412 0.08324 2018 6 15 58284 0.1404 0.4408 0.08315 2018 6 16 58285 0.1420 0.4403 0.08310 2018 6 17 58286 0.1436 0.4398 0.08301 2018 6 18 58287 0.1452 0.4393 0.08283 2018 6 19 58288 0.1467 0.4387 0.08256 2018 6 20 58289 0.1483 0.4381 0.08223 2018 6 21 58290 0.1498 0.4375 0.08190 2018 6 22 58291 0.1513 0.4369 0.08162 2018 6 23 58292 0.1528 0.4363 0.08144 2018 6 24 58293 0.1543 0.4356 0.08139 2018 6 25 58294 0.1558 0.4349 0.08148 2018 6 26 58295 0.1573 0.4342 0.08172 2018 6 27 58296 0.1588 0.4334 0.08209 2018 6 28 58297 0.1602 0.4327 0.08255 2018 6 29 58298 0.1617 0.4319 0.08307 2018 6 30 58299 0.1631 0.4310 0.08359 2018 7 1 58300 0.1645 0.4302 0.08407 2018 7 2 58301 0.1659 0.4294 0.08447 2018 7 3 58302 0.1672 0.4285 0.08476 2018 7 4 58303 0.1686 0.4276 0.08493 2018 7 5 58304 0.1699 0.4266 0.08496 2018 7 6 58305 0.1713 0.4257 0.08490 2018 7 7 58306 0.1726 0.4247 0.08476 2018 7 8 58307 0.1739 0.4237 0.08459 2018 7 9 58308 0.1751 0.4227 0.08445 2018 7 10 58309 0.1764 0.4217 0.08440 2018 7 11 58310 0.1776 0.4207 0.08446 2018 7 12 58311 0.1788 0.4196 0.08460 2018 7 13 58312 0.1800 0.4185 0.08478 2018 7 14 58313 0.1812 0.4174 0.08492 2018 7 15 58314 0.1823 0.4163 0.08494 2018 7 16 58315 0.1835 0.4152 0.08482 2018 7 17 58316 0.1846 0.4140 0.08459 2018 7 18 58317 0.1857 0.4128 0.08430 2018 7 19 58318 0.1867 0.4116 0.08403 2018 7 20 58319 0.1878 0.4104 0.08385 2018 7 21 58320 0.1888 0.4092 0.08381 2018 7 22 58321 0.1898 0.4080 0.08391 2018 7 23 58322 0.1908 0.4067 0.08415 2018 7 24 58323 0.1917 0.4054 0.08453 2018 7 25 58324 0.1926 0.4041 0.08499 2018 7 26 58325 0.1936 0.4028 0.08551 2018 7 27 58326 0.1944 0.4015 0.08604 2018 7 28 58327 0.1953 0.4002 0.08652 2018 7 29 58328 0.1961 0.3988 0.08693 2018 7 30 58329 0.1969 0.3975 0.08721 2018 7 31 58330 0.1977 0.3961 0.08737 2018 8 1 58331 0.1984 0.3947 0.08740 2018 8 2 58332 0.1992 0.3933 0.08733 2018 8 3 58333 0.1999 0.3919 0.08718 2018 8 4 58334 0.2005 0.3905 0.08701 2018 8 5 58335 0.2012 0.3891 0.08685 2018 8 6 58336 0.2018 0.3877 0.08681 2018 8 7 58337 0.2024 0.3862 0.08684 2018 8 8 58338 0.2030 0.3848 0.08696 2018 8 9 58339 0.2035 0.3833 0.08711 2018 8 10 58340 0.2040 0.3818 0.08723 2018 8 11 58341 0.2045 0.3803 0.08722 2018 8 12 58342 0.2049 0.3789 0.08705 2018 8 13 58343 0.2054 0.3774 0.08672 2018 8 14 58344 0.2058 0.3759 0.08626 2018 8 15 58345 0.2061 0.3744 0.08578 2018 8 16 58346 0.2065 0.3728 0.08535 2018 8 17 58347 0.2068 0.3713 0.08504 2018 8 18 58348 0.2071 0.3698 0.08488 2018 8 19 58349 0.2073 0.3683 0.08487 2018 8 20 58350 0.2075 0.3667 0.08499 2018 8 21 58351 0.2077 0.3652 0.08520 2018 8 22 58352 0.2079 0.3637 0.08547 2018 8 23 58353 0.2080 0.3621 0.08574 2018 8 24 58354 0.2081 0.3606 0.08597 2018 8 25 58355 0.2082 0.3590 0.08612 2018 8 26 58356 0.2083 0.3575 0.08614 2018 8 27 58357 0.2083 0.3560 0.08603 2018 8 28 58358 0.2083 0.3544 0.08577 2018 8 29 58359 0.2082 0.3529 0.08540 2018 8 30 58360 0.2082 0.3513 0.08493 2018 8 31 58361 0.2081 0.3498 0.08443 2018 9 1 58362 0.2079 0.3482 0.08393 2018 9 2 58363 0.2078 0.3467 0.08348 2018 9 3 58364 0.2076 0.3452 0.08310 2018 9 4 58365 0.2074 0.3436 0.08279 2018 9 5 58366 0.2071 0.3421 0.08252 2018 9 6 58367 0.2069 0.3406 0.08223 2018 9 7 58368 0.2066 0.3391 0.08184 2018 9 8 58369 0.2062 0.3375 0.08128 2018 9 9 58370 0.2059 0.3360 0.08053 2018 9 10 58371 0.2055 0.3345 0.07960 2018 9 11 58372 0.2051 0.3330 0.07858 2018 9 12 58373 0.2046 0.3315 0.07755 2018 9 13 58374 0.2041 0.3300 0.07661 2018 9 14 58375 0.2036 0.3286 0.07581 2018 9 15 58376 0.2031 0.3271 0.07518 2018 9 16 58377 0.2025 0.3256 0.07469 2018 9 17 58378 0.2019 0.3242 0.07433 2018 9 18 58379 0.2013 0.3227 0.07403 2018 9 19 58380 0.2007 0.3213 0.07377 2018 9 20 58381 0.2000 0.3199 0.07347 2018 9 21 58382 0.1993 0.3185 0.07310 2018 9 22 58383 0.1986 0.3171 0.07261 2018 9 23 58384 0.1978 0.3157 0.07199 2018 9 24 58385 0.1971 0.3143 0.07123 2018 9 25 58386 0.1962 0.3129 0.07033 2018 9 26 58387 0.1954 0.3116 0.06933 2018 9 27 58388 0.1946 0.3102 0.06828 2018 9 28 58389 0.1937 0.3089 0.06723 2018 9 29 58390 0.1928 0.3076 0.06624 2018 9 30 58391 0.1918 0.3063 0.06534 2018 10 1 58392 0.1909 0.3050 0.06453 2018 10 2 58393 0.1899 0.3038 0.06378 2018 10 3 58394 0.1889 0.3025 0.06305 2018 10 4 58395 0.1878 0.3013 0.06224 2018 10 5 58396 0.1868 0.3001 0.06130 2018 10 6 58397 0.1857 0.2989 0.06019 2018 10 7 58398 0.1846 0.2977 0.05888 2018 10 8 58399 0.1834 0.2965 0.05744 2018 10 9 58400 0.1823 0.2954 0.05594 2018 10 10 58401 0.1811 0.2942 0.05448 2018 10 11 58402 0.1799 0.2931 0.05314 2018 10 12 58403 0.1787 0.2920 0.05197 2018 10 13 58404 0.1775 0.2910 0.05096 2018 10 14 58405 0.1762 0.2899 0.05011 2018 10 15 58406 0.1749 0.2889 0.04937 2018 10 16 58407 0.1736 0.2879 0.04868 2018 10 17 58408 0.1723 0.2869 0.04801 2018 10 18 58409 0.1710 0.2859 0.04729 2018 10 19 58410 0.1696 0.2850 0.04648 2018 10 20 58411 0.1682 0.2840 0.04555 2018 10 21 58412 0.1668 0.2831 0.04450 2018 10 22 58413 0.1654 0.2822 0.04331 2018 10 23 58414 0.1640 0.2814 0.04202 2018 10 24 58415 0.1626 0.2805 0.04065 2018 10 25 58416 0.1611 0.2797 0.03925 2018 10 26 58417 0.1596 0.2789 0.03789 2018 10 27 58418 0.1581 0.2782 0.03661 2018 10 28 58419 0.1566 0.2774 0.03543 2018 10 29 58420 0.1551 0.2767 0.03434 2018 10 30 58421 0.1535 0.2760 0.03331 2018 10 31 58422 0.1520 0.2753 0.03226 2018 11 1 58423 0.1504 0.2747 0.03114 2018 11 2 58424 0.1488 0.2741 0.02989 2018 11 3 58425 0.1472 0.2735 0.02850 2018 11 4 58426 0.1456 0.2729 0.02699 2018 11 5 58427 0.1440 0.2723 0.02541 2018 11 6 58428 0.1424 0.2718 0.02385 2018 11 7 58429 0.1407 0.2713 0.02239 2018 11 8 58430 0.1391 0.2709 0.02109 2018 11 9 58431 0.1374 0.2704 0.01998 2018 11 10 58432 0.1358 0.2700 0.01908 2018 11 11 58433 0.1341 0.2696 0.01835 2018 11 12 58434 0.1324 0.2692 0.01776 2018 11 13 58435 0.1307 0.2689 0.01725 2018 11 14 58436 0.1290 0.2686 0.01676 2018 11 15 58437 0.1273 0.2683 0.01623 2018 11 16 58438 0.1256 0.2681 0.01561 2018 11 17 58439 0.1239 0.2678 0.01488 2018 11 18 58440 0.1221 0.2676 0.01402 2018 11 19 58441 0.1204 0.2675 0.01304 2018 11 20 58442 0.1187 0.2673 0.01195 2018 11 21 58443 0.1169 0.2672 0.01078 2018 11 22 58444 0.1152 0.2671 0.00956 2018 11 23 58445 0.1135 0.2670 0.00836 2018 11 24 58446 0.1117 0.2670 0.00726 2018 11 25 58447 0.1100 0.2670 0.00632 2018 11 26 58448 0.1082 0.2670 0.00550 2018 11 27 58449 0.1065 0.2671 0.00472 2018 11 28 58450 0.1047 0.2671 0.00385 2018 11 29 58451 0.1030 0.2672 0.00284 2018 11 30 58452 0.1012 0.2674 0.00167 2018 12 1 58453 0.0995 0.2675 0.00036 2018 12 2 58454 0.0978 0.2677 -0.00103 2018 12 3 58455 0.0960 0.2679 -0.00246 2018 12 4 58456 0.0943 0.2682 -0.00386 2018 12 5 58457 0.0925 0.2684 -0.00510 2018 12 6 58458 0.0908 0.2687 -0.00614 2018 12 7 58459 0.0891 0.2690 -0.00694 2018 12 8 58460 0.0874 0.2694 -0.00761 2018 12 9 58461 0.0857 0.2698 -0.00817 2018 12 10 58462 0.0840 0.2702 -0.00866 2018 12 11 58463 0.0823 0.2706 -0.00917 2018 12 12 58464 0.0806 0.2711 -0.00971 2018 12 13 58465 0.0789 0.2716 -0.01034 2018 12 14 58466 0.0772 0.2721 -0.01108 2018 12 15 58467 0.0755 0.2726 -0.01193 2018 12 16 58468 0.0739 0.2732 -0.01290 2018 12 17 58469 0.0722 0.2738 -0.01394 2018 12 18 58470 0.0706 0.2744 -0.01501 2018 12 19 58471 0.0690 0.2750 -0.01608 2018 12 20 58472 0.0674 0.2757 -0.01715 2018 12 21 58473 0.0658 0.2764 -0.01815 2018 12 22 58474 0.0642 0.2771 -0.01903 2018 12 23 58475 0.0626 0.2779 -0.01973 2018 12 24 58476 0.0610 0.2786 -0.02042 2018 12 25 58477 0.0595 0.2794 -0.02112 2018 12 26 58478 0.0579 0.2802 -0.02190 2018 12 27 58479 0.0564 0.2811 -0.02285 2018 12 28 58480 0.0549 0.2820 -0.02394 2018 12 29 58481 0.0534 0.2828 -0.02516 2018 12 30 58482 0.0519 0.2838 -0.02630 2018 12 31 58483 0.0505 0.2847 -0.02742 2019 1 1 58484 0.0490 0.2857 -0.02850 2019 1 2 58485 0.0476 0.2866 -0.02939 2019 1 3 58486 0.0462 0.2877 -0.03011 2019 1 4 58487 0.0448 0.2887 -0.03074 2019 1 5 58488 0.0435 0.2897 -0.03123 2019 1 6 58489 0.0421 0.2908 -0.03170 2019 1 7 58490 0.0408 0.2919 -0.03218 2019 1 8 58491 0.0395 0.2930 -0.03271 2019 1 9 58492 0.0382 0.2942 -0.03337 2019 1 10 58493 0.0369 0.2953 -0.03416 2019 1 11 58494 0.0357 0.2965 -0.03515 2019 1 12 58495 0.0344 0.2977 -0.03628 2019 1 13 58496 0.0332 0.2989 -0.03750 2019 1 14 58497 0.0321 0.3001 -0.03881 2019 1 15 58498 0.0309 0.3014 -0.04016 2019 1 16 58499 0.0298 0.3027 -0.04152 2019 1 17 58500 0.0287 0.3040 -0.04289 2019 1 18 58501 0.0276 0.3053 -0.04414 2019 1 19 58502 0.0265 0.3066 -0.04527 2019 1 20 58503 0.0255 0.3079 -0.04636 2019 1 21 58504 0.0244 0.3093 -0.04751 2019 1 22 58505 0.0235 0.3107 -0.04879 2019 1 23 58506 0.0225 0.3121 -0.05029 2019 1 24 58507 0.0216 0.3135 -0.05199 2019 1 25 58508 0.0206 0.3149 -0.05378 2019 1 26 58509 0.0198 0.3163 -0.05562 2019 1 27 58510 0.0189 0.3178 -0.05735 2019 1 28 58511 0.0181 0.3192 -0.05889 2019 1 29 58512 0.0173 0.3207 -0.06022 2019 1 30 58513 0.0165 0.3222 -0.06136 2019 1 31 58514 0.0157 0.3237 -0.06238 2019 2 1 58515 0.0150 0.3252 -0.06331 2019 2 2 58516 0.0143 0.3267 -0.06417 2019 2 3 58517 0.0137 0.3283 -0.06493 2019 2 4 58518 0.0130 0.3298 -0.06574 2019 2 5 58519 0.0124 0.3314 -0.06658 2019 2 6 58520 0.0118 0.3329 -0.06753 2019 2 7 58521 0.0113 0.3345 -0.06870 2019 2 8 58522 0.0108 0.3361 -0.07009 2019 2 9 58523 0.0103 0.3377 -0.07163 2019 2 10 58524 0.0098 0.3393 -0.07327 2019 2 11 58525 0.0094 0.3409 -0.07496 2019 2 12 58526 0.0090 0.3425 -0.07659 2019 2 13 58527 0.0086 0.3441 -0.07814 2019 2 14 58528 0.0083 0.3458 -0.07962 2019 2 15 58529 0.0080 0.3474 -0.08101 2019 2 16 58530 0.0077 0.3490 -0.08228 2019 2 17 58531 0.0074 0.3507 -0.08356 2019 2 18 58532 0.0072 0.3523 -0.08490 2019 2 19 58533 0.0070 0.3540 -0.08640 2019 2 20 58534 0.0069 0.3556 -0.08818 2019 2 21 58535 0.0068 0.3573 -0.09013 2019 2 22 58536 0.0067 0.3589 -0.09210 2019 2 23 58537 0.0066 0.3606 -0.09404 2019 2 24 58538 0.0066 0.3622 -0.09591 2019 2 25 58539 0.0066 0.3639 -0.09763 2019 2 26 58540 0.0066 0.3656 -0.09914 2019 2 27 58541 0.0067 0.3672 -0.10044 2019 2 28 58542 0.0068 0.3689 -0.10159 2019 3 1 58543 0.0069 0.3705 -0.10260 2019 3 2 58544 0.0071 0.3722 -0.10360 2019 3 3 58545 0.0072 0.3738 -0.10462 2019 3 4 58546 0.0075 0.3755 -0.10573 2019 3 5 58547 0.0077 0.3771 -0.10684 2019 3 6 58548 0.0080 0.3788 -0.10811 2019 3 7 58549 0.0083 0.3804 -0.10956 2019 3 8 58550 0.0087 0.3820 -0.11112 2019 3 9 58551 0.0090 0.3836 -0.11283 2019 3 10 58552 0.0094 0.3853 -0.11459 2019 3 11 58553 0.0099 0.3869 -0.11633 2019 3 12 58554 0.0103 0.3885 -0.11805 2019 3 13 58555 0.0108 0.3901 -0.11975 2019 3 14 58556 0.0114 0.3917 -0.12134 2019 3 15 58557 0.0119 0.3932 -0.12288 2019 3 16 58558 0.0125 0.3948 -0.12444 2019 3 17 58559 0.0131 0.3964 -0.12611 2019 3 18 58560 0.0138 0.3979 -0.12799 2019 3 19 58561 0.0145 0.3995 -0.13010 2019 3 20 58562 0.0152 0.4010 -0.13243 2019 3 21 58563 0.0159 0.4025 -0.13494 2019 3 22 58564 0.0167 0.4040 -0.13755 2019 3 23 58565 0.0175 0.4055 -0.14010 2019 3 24 58566 0.0183 0.4070 -0.14247 2019 3 25 58567 0.0191 0.4085 -0.14458 2019 3 26 58568 0.0200 0.4099 -0.14642 2019 3 27 58569 0.0209 0.4114 -0.14800 2019 3 28 58570 0.0219 0.4128 -0.14944 2019 3 29 58571 0.0228 0.4142 -0.15089 2019 3 30 58572 0.0238 0.4156 -0.15235 2019 3 31 58573 0.0248 0.4170 -0.15385 2019 4 1 58574 0.0259 0.4184 -0.15539 2019 4 2 58575 0.0270 0.4197 -0.15699 2019 4 3 58576 0.0280 0.4211 -0.15867 2019 4 4 58577 0.0292 0.4224 -0.16044 2019 4 5 58578 0.0303 0.4237 -0.16231 2019 4 6 58579 0.0315 0.4250 -0.16426 2019 4 7 58580 0.0327 0.4262 -0.16626 2019 4 8 58581 0.0339 0.4275 -0.16820 2019 4 9 58582 0.0352 0.4287 -0.16997 2019 4 10 58583 0.0364 0.4299 -0.17162 2019 4 11 58584 0.0377 0.4311 -0.17320 2019 4 12 58585 0.0390 0.4322 -0.17469 2019 4 13 58586 0.0404 0.4334 -0.17617 2019 4 14 58587 0.0417 0.4345 -0.17772 2019 4 15 58588 0.0431 0.4356 -0.17938 2019 4 16 58589 0.0445 0.4367 -0.18121 2019 4 17 58590 0.0459 0.4377 -0.18332 2019 4 18 58591 0.0474 0.4387 -0.18557 2019 4 19 58592 0.0489 0.4398 -0.18776 These predictions are based on all announced leap seconds. 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).