********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 12 April 2018 Vol. XXXI No. 015 ______________________________________________________________________ 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 6 58214 0.03443 .00009 0.40381 .00009 0.128873 0.000006 18 4 7 58215 0.03452 .00009 0.40545 .00009 0.128182 0.000007 18 4 8 58216 0.03494 .00009 0.40703 .00009 0.127516 0.000006 18 4 9 58217 0.03572 .00009 0.40858 .00009 0.126852 0.000005 18 4 10 58218 0.03681 .00009 0.41015 .00009 0.126189 0.000005 18 4 11 58219 0.03798 .00009 0.41188 .00009 0.125487 0.000005 18 4 12 58220 0.03891 .00009 0.41375 .00009 0.124689 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 = 0.1196 - 0.1120 cos A + 0.0898 sin A + 0.0277 cos C - 0.0109 sin C y = 0.3401 + 0.0831 cos A + 0.1096 sin A - 0.0109 cos C - 0.0277 sin C UT1-UTC = 0.1639 - 0.00083 (MJD - 58228) - (UT2-UT1) where A = 2*pi*(MJD-58220)/365.25 and C = 2*pi*(MJD-58220)/435. TAI-UTC(MJD 58221) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58220)**0.80 S t = 0.00025 (MJD-58220)**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 13 58221 0.0397 0.4154 0.12379 2018 4 14 58222 0.0403 0.4170 0.12275 2018 4 15 58223 0.0410 0.4183 0.12157 2018 4 16 58224 0.0419 0.4195 0.12030 2018 4 17 58225 0.0429 0.4206 0.11901 2018 4 18 58226 0.0441 0.4217 0.11781 2018 4 19 58227 0.0453 0.4228 0.11674 2018 4 20 58228 0.0466 0.4239 0.11581 2018 4 21 58229 0.0478 0.4250 0.11499 2018 4 22 58230 0.0491 0.4261 0.11421 2018 4 23 58231 0.0503 0.4272 0.11343 2018 4 24 58232 0.0515 0.4283 0.11261 2018 4 25 58233 0.0528 0.4293 0.11169 2018 4 26 58234 0.0541 0.4303 0.11064 2018 4 27 58235 0.0554 0.4313 0.10950 2018 4 28 58236 0.0567 0.4322 0.10835 2018 4 29 58237 0.0581 0.4331 0.10725 2018 4 30 58238 0.0595 0.4340 0.10626 2018 5 1 58239 0.0610 0.4349 0.10542 2018 5 2 58240 0.0624 0.4357 0.10475 2018 5 3 58241 0.0639 0.4366 0.10423 2018 5 4 58242 0.0653 0.4374 0.10383 2018 5 5 58243 0.0668 0.4382 0.10351 2018 5 6 58244 0.0683 0.4389 0.10323 2018 5 7 58245 0.0698 0.4396 0.10293 2018 5 8 58246 0.0713 0.4402 0.10256 2018 5 9 58247 0.0729 0.4408 0.10209 2018 5 10 58248 0.0744 0.4414 0.10148 2018 5 11 58249 0.0760 0.4420 0.10073 2018 5 12 58250 0.0776 0.4426 0.09987 2018 5 13 58251 0.0792 0.4431 0.09894 2018 5 14 58252 0.0808 0.4436 0.09800 2018 5 15 58253 0.0824 0.4441 0.09713 2018 5 16 58254 0.0841 0.4446 0.09639 2018 5 17 58255 0.0857 0.4450 0.09580 2018 5 18 58256 0.0874 0.4454 0.09534 2018 5 19 58257 0.0890 0.4458 0.09495 2018 5 20 58258 0.0907 0.4461 0.09457 2018 5 21 58259 0.0924 0.4464 0.09412 2018 5 22 58260 0.0941 0.4467 0.09356 2018 5 23 58261 0.0957 0.4470 0.09290 2018 5 24 58262 0.0974 0.4472 0.09216 2018 5 25 58263 0.0991 0.4475 0.09139 2018 5 26 58264 0.1008 0.4476 0.09064 2018 5 27 58265 0.1025 0.4478 0.08997 2018 5 28 58266 0.1043 0.4479 0.08942 2018 5 29 58267 0.1060 0.4480 0.08900 2018 5 30 58268 0.1077 0.4481 0.08873 2018 5 31 58269 0.1094 0.4481 0.08858 2018 6 1 58270 0.1111 0.4481 0.08852 2018 6 2 58271 0.1128 0.4481 0.08852 2018 6 3 58272 0.1146 0.4481 0.08853 2018 6 4 58273 0.1163 0.4480 0.08851 2018 6 5 58274 0.1180 0.4479 0.08841 2018 6 6 58275 0.1197 0.4478 0.08822 2018 6 7 58276 0.1214 0.4477 0.08793 2018 6 8 58277 0.1231 0.4475 0.08753 2018 6 9 58278 0.1249 0.4473 0.08706 2018 6 10 58279 0.1266 0.4471 0.08655 2018 6 11 58280 0.1283 0.4468 0.08606 2018 6 12 58281 0.1300 0.4466 0.08566 2018 6 13 58282 0.1317 0.4462 0.08538 2018 6 14 58283 0.1333 0.4459 0.08524 2018 6 15 58284 0.1350 0.4456 0.08519 2018 6 16 58285 0.1367 0.4452 0.08517 2018 6 17 58286 0.1384 0.4448 0.08509 2018 6 18 58287 0.1400 0.4443 0.08491 2018 6 19 58288 0.1417 0.4438 0.08462 2018 6 20 58289 0.1433 0.4434 0.08426 2018 6 21 58290 0.1450 0.4428 0.08389 2018 6 22 58291 0.1466 0.4423 0.08356 2018 6 23 58292 0.1482 0.4417 0.08332 2018 6 24 58293 0.1498 0.4411 0.08320 2018 6 25 58294 0.1514 0.4405 0.08323 2018 6 26 58295 0.1530 0.4399 0.08339 2018 6 27 58296 0.1546 0.4392 0.08367 2018 6 28 58297 0.1561 0.4385 0.08405 2018 6 29 58298 0.1577 0.4378 0.08448 2018 6 30 58299 0.1592 0.4370 0.08491 2018 7 1 58300 0.1607 0.4363 0.08531 2018 7 2 58301 0.1622 0.4355 0.08563 2018 7 3 58302 0.1637 0.4347 0.08585 2018 7 4 58303 0.1652 0.4338 0.08595 2018 7 5 58304 0.1666 0.4330 0.08594 2018 7 6 58305 0.1681 0.4321 0.08583 2018 7 7 58306 0.1695 0.4312 0.08565 2018 7 8 58307 0.1709 0.4303 0.08545 2018 7 9 58308 0.1723 0.4293 0.08528 2018 7 10 58309 0.1737 0.4283 0.08520 2018 7 11 58310 0.1751 0.4274 0.08523 2018 7 12 58311 0.1764 0.4263 0.08535 2018 7 13 58312 0.1777 0.4253 0.08551 2018 7 14 58313 0.1790 0.4242 0.08562 2018 7 15 58314 0.1803 0.4232 0.08562 2018 7 16 58315 0.1815 0.4221 0.08548 2018 7 17 58316 0.1828 0.4210 0.08523 2018 7 18 58317 0.1840 0.4198 0.08493 2018 7 19 58318 0.1852 0.4187 0.08465 2018 7 20 58319 0.1864 0.4175 0.08446 2018 7 21 58320 0.1875 0.4163 0.08440 2018 7 22 58321 0.1887 0.4151 0.08448 2018 7 23 58322 0.1898 0.4139 0.08472 2018 7 24 58323 0.1908 0.4126 0.08508 2018 7 25 58324 0.1919 0.4114 0.08554 2018 7 26 58325 0.1929 0.4101 0.08606 2018 7 27 58326 0.1940 0.4088 0.08658 2018 7 28 58327 0.1949 0.4075 0.08708 2018 7 29 58328 0.1959 0.4062 0.08749 2018 7 30 58329 0.1969 0.4048 0.08786 2018 7 31 58330 0.1978 0.4035 0.08809 2018 8 1 58331 0.1987 0.4021 0.08820 2018 8 2 58332 0.1995 0.4007 0.08820 2018 8 3 58333 0.2004 0.3993 0.08813 2018 8 4 58334 0.2012 0.3979 0.08802 2018 8 5 58335 0.2020 0.3965 0.08792 2018 8 6 58336 0.2027 0.3951 0.08787 2018 8 7 58337 0.2034 0.3936 0.08790 2018 8 8 58338 0.2041 0.3921 0.08801 2018 8 9 58339 0.2048 0.3907 0.08815 2018 8 10 58340 0.2055 0.3892 0.08825 2018 8 11 58341 0.2061 0.3877 0.08823 2018 8 12 58342 0.2067 0.3862 0.08803 2018 8 13 58343 0.2072 0.3847 0.08767 2018 8 14 58344 0.2078 0.3832 0.08720 2018 8 15 58345 0.2083 0.3817 0.08669 2018 8 16 58346 0.2088 0.3801 0.08624 2018 8 17 58347 0.2092 0.3786 0.08590 2018 8 18 58348 0.2096 0.3771 0.08572 2018 8 19 58349 0.2100 0.3755 0.08568 2018 8 20 58350 0.2104 0.3739 0.08578 2018 8 21 58351 0.2107 0.3724 0.08597 2018 8 22 58352 0.2110 0.3708 0.08621 2018 8 23 58353 0.2113 0.3692 0.08646 2018 8 24 58354 0.2115 0.3677 0.08666 2018 8 25 58355 0.2117 0.3661 0.08678 2018 8 26 58356 0.2119 0.3645 0.08678 2018 8 27 58357 0.2121 0.3629 0.08665 2018 8 28 58358 0.2122 0.3613 0.08637 2018 8 29 58359 0.2123 0.3597 0.08597 2018 8 30 58360 0.2123 0.3582 0.08548 2018 8 31 58361 0.2124 0.3566 0.08495 2018 9 1 58362 0.2124 0.3550 0.08443 2018 9 2 58363 0.2123 0.3534 0.08395 2018 9 3 58364 0.2123 0.3518 0.08355 2018 9 4 58365 0.2122 0.3502 0.08322 2018 9 5 58366 0.2121 0.3486 0.08293 2018 9 6 58367 0.2119 0.3470 0.08261 2018 9 7 58368 0.2117 0.3454 0.08220 2018 9 8 58369 0.2115 0.3439 0.08163 2018 9 9 58370 0.2113 0.3423 0.08085 2018 9 10 58371 0.2110 0.3407 0.07991 2018 9 11 58372 0.2107 0.3391 0.07886 2018 9 12 58373 0.2104 0.3376 0.07782 2018 9 13 58374 0.2100 0.3360 0.07686 2018 9 14 58375 0.2096 0.3345 0.07604 2018 9 15 58376 0.2092 0.3329 0.07539 2018 9 16 58377 0.2088 0.3314 0.07489 2018 9 17 58378 0.2083 0.3299 0.07450 2018 9 18 58379 0.2078 0.3283 0.07418 2018 9 19 58380 0.2072 0.3268 0.07389 2018 9 20 58381 0.2067 0.3253 0.07356 2018 9 21 58382 0.2061 0.3238 0.07316 2018 9 22 58383 0.2055 0.3223 0.07264 2018 9 23 58384 0.2048 0.3208 0.07198 2018 9 24 58385 0.2041 0.3194 0.07118 2018 9 25 58386 0.2034 0.3179 0.07025 2018 9 26 58387 0.2027 0.3165 0.06921 2018 9 27 58388 0.2019 0.3150 0.06811 2018 9 28 58389 0.2011 0.3136 0.06703 2018 9 29 58390 0.2003 0.3122 0.06599 2018 9 30 58391 0.1995 0.3108 0.06505 2018 10 1 58392 0.1986 0.3094 0.06420 2018 10 2 58393 0.1977 0.3081 0.06342 2018 10 3 58394 0.1968 0.3067 0.06265 2018 10 4 58395 0.1958 0.3054 0.06181 2018 10 5 58396 0.1948 0.3040 0.06085 2018 10 6 58397 0.1938 0.3027 0.05970 2018 10 7 58398 0.1928 0.3014 0.05838 2018 10 8 58399 0.1918 0.3002 0.05693 2018 10 9 58400 0.1907 0.2989 0.05543 2018 10 10 58401 0.1896 0.2977 0.05397 2018 10 11 58402 0.1885 0.2964 0.05264 2018 10 12 58403 0.1873 0.2952 0.05149 2018 10 13 58404 0.1861 0.2940 0.05051 2018 10 14 58405 0.1849 0.2929 0.04969 2018 10 15 58406 0.1837 0.2917 0.04899 2018 10 16 58407 0.1825 0.2906 0.04833 2018 10 17 58408 0.1812 0.2895 0.04768 2018 10 18 58409 0.1800 0.2884 0.04697 2018 10 19 58410 0.1787 0.2873 0.04616 2018 10 20 58411 0.1773 0.2863 0.04520 2018 10 21 58412 0.1760 0.2852 0.04410 2018 10 22 58413 0.1746 0.2842 0.04286 2018 10 23 58414 0.1732 0.2832 0.04152 2018 10 24 58415 0.1718 0.2823 0.04012 2018 10 25 58416 0.1704 0.2813 0.03873 2018 10 26 58417 0.1690 0.2804 0.03741 2018 10 27 58418 0.1675 0.2795 0.03620 2018 10 28 58419 0.1660 0.2786 0.03514 2018 10 29 58420 0.1646 0.2778 0.03420 2018 10 30 58421 0.1630 0.2770 0.03333 2018 10 31 58422 0.1615 0.2762 0.03247 2018 11 1 58423 0.1600 0.2754 0.03154 2018 11 2 58424 0.1584 0.2746 0.03051 2018 11 3 58425 0.1569 0.2739 0.02936 2018 11 4 58426 0.1553 0.2732 0.02808 2018 11 5 58427 0.1537 0.2725 0.02675 2018 11 6 58428 0.1521 0.2718 0.02541 2018 11 7 58429 0.1504 0.2712 0.02414 2018 11 8 58430 0.1488 0.2706 0.02299 2018 11 9 58431 0.1472 0.2700 0.02197 2018 11 10 58432 0.1455 0.2695 0.02107 2018 11 11 58433 0.1438 0.2690 0.02029 2018 11 12 58434 0.1421 0.2685 0.01959 2018 11 13 58435 0.1405 0.2680 0.01894 2018 11 14 58436 0.1388 0.2675 0.01828 2018 11 15 58437 0.1370 0.2671 0.01754 2018 11 16 58438 0.1353 0.2667 0.01668 2018 11 17 58439 0.1336 0.2664 0.01568 2018 11 18 58440 0.1319 0.2660 0.01453 2018 11 19 58441 0.1301 0.2657 0.01324 2018 11 20 58442 0.1284 0.2654 0.01184 2018 11 21 58443 0.1266 0.2652 0.01041 2018 11 22 58444 0.1249 0.2649 0.00905 2018 11 23 58445 0.1231 0.2647 0.00785 2018 11 24 58446 0.1213 0.2646 0.00675 2018 11 25 58447 0.1196 0.2644 0.00580 2018 11 26 58448 0.1178 0.2643 0.00494 2018 11 27 58449 0.1160 0.2642 0.00406 2018 11 28 58450 0.1143 0.2642 0.00313 2018 11 29 58451 0.1125 0.2641 0.00208 2018 11 30 58452 0.1107 0.2641 0.00089 2018 12 1 58453 0.1089 0.2641 -0.00041 2018 12 2 58454 0.1071 0.2642 -0.00179 2018 12 3 58455 0.1053 0.2643 -0.00315 2018 12 4 58456 0.1036 0.2644 -0.00442 2018 12 5 58457 0.1018 0.2645 -0.00554 2018 12 6 58458 0.1000 0.2647 -0.00655 2018 12 7 58459 0.0982 0.2649 -0.00742 2018 12 8 58460 0.0965 0.2651 -0.00814 2018 12 9 58461 0.0947 0.2653 -0.00868 2018 12 10 58462 0.0929 0.2656 -0.00917 2018 12 11 58463 0.0912 0.2659 -0.00963 2018 12 12 58464 0.0894 0.2662 -0.01009 2018 12 13 58465 0.0877 0.2666 -0.01064 2018 12 14 58466 0.0859 0.2670 -0.01133 2018 12 15 58467 0.0842 0.2674 -0.01217 2018 12 16 58468 0.0825 0.2678 -0.01306 2018 12 17 58469 0.0808 0.2683 -0.01407 2018 12 18 58470 0.0791 0.2688 -0.01523 2018 12 19 58471 0.0774 0.2693 -0.01637 2018 12 20 58472 0.0757 0.2699 -0.01745 2018 12 21 58473 0.0740 0.2705 -0.01848 2018 12 22 58474 0.0723 0.2711 -0.01936 2018 12 23 58475 0.0707 0.2717 -0.02019 2018 12 24 58476 0.0690 0.2723 -0.02101 2018 12 25 58477 0.0674 0.2730 -0.02189 2018 12 26 58478 0.0658 0.2737 -0.02294 2018 12 27 58479 0.0641 0.2745 -0.02417 2018 12 28 58480 0.0625 0.2752 -0.02560 2018 12 29 58481 0.0610 0.2760 -0.02715 2018 12 30 58482 0.0594 0.2768 -0.02868 2018 12 31 58483 0.0578 0.2776 -0.03016 2019 1 1 58484 0.0563 0.2785 -0.03154 2019 1 2 58485 0.0548 0.2794 -0.03278 2019 1 3 58486 0.0533 0.2803 -0.03394 2019 1 4 58487 0.0518 0.2812 -0.03491 2019 1 5 58488 0.0503 0.2822 -0.03575 2019 1 6 58489 0.0489 0.2831 -0.03654 2019 1 7 58490 0.0474 0.2841 -0.03733 2019 1 8 58491 0.0460 0.2852 -0.03817 2019 1 9 58492 0.0446 0.2862 -0.03913 2019 1 10 58493 0.0432 0.2873 -0.04021 2019 1 11 58494 0.0419 0.2883 -0.04138 2019 1 12 58495 0.0405 0.2895 -0.04267 2019 1 13 58496 0.0392 0.2906 -0.04402 2019 1 14 58497 0.0379 0.2917 -0.04536 2019 1 15 58498 0.0366 0.2929 -0.04668 2019 1 16 58499 0.0354 0.2941 -0.04798 2019 1 17 58500 0.0341 0.2953 -0.04924 2019 1 18 58501 0.0329 0.2965 -0.05043 2019 1 19 58502 0.0317 0.2978 -0.05153 2019 1 20 58503 0.0306 0.2990 -0.05251 2019 1 21 58504 0.0294 0.3003 -0.05353 2019 1 22 58505 0.0283 0.3016 -0.05463 2019 1 23 58506 0.0272 0.3029 -0.05592 2019 1 24 58507 0.0262 0.3043 -0.05747 2019 1 25 58508 0.0251 0.3056 -0.05925 2019 1 26 58509 0.0241 0.3070 -0.06111 2019 1 27 58510 0.0231 0.3084 -0.06294 2019 1 28 58511 0.0222 0.3098 -0.06466 2019 1 29 58512 0.0212 0.3112 -0.06616 2019 1 30 58513 0.0203 0.3126 -0.06746 2019 1 31 58514 0.0194 0.3141 -0.06861 2019 2 1 58515 0.0186 0.3155 -0.06963 2019 2 2 58516 0.0177 0.3170 -0.07053 2019 2 3 58517 0.0169 0.3185 -0.07140 2019 2 4 58518 0.0162 0.3200 -0.07227 2019 2 5 58519 0.0154 0.3215 -0.07318 2019 2 6 58520 0.0147 0.3230 -0.07427 2019 2 7 58521 0.0140 0.3246 -0.07546 2019 2 8 58522 0.0133 0.3261 -0.07669 2019 2 9 58523 0.0127 0.3277 -0.07800 2019 2 10 58524 0.0121 0.3292 -0.07942 2019 2 11 58525 0.0115 0.3308 -0.08090 2019 2 12 58526 0.0110 0.3324 -0.08234 2019 2 13 58527 0.0105 0.3340 -0.08372 2019 2 14 58528 0.0100 0.3356 -0.08499 2019 2 15 58529 0.0096 0.3372 -0.08615 2019 2 16 58530 0.0091 0.3388 -0.08726 2019 2 17 58531 0.0087 0.3404 -0.08840 2019 2 18 58532 0.0084 0.3420 -0.08966 2019 2 19 58533 0.0081 0.3437 -0.09100 2019 2 20 58534 0.0078 0.3453 -0.09260 2019 2 21 58535 0.0075 0.3470 -0.09444 2019 2 22 58536 0.0072 0.3486 -0.09639 2019 2 23 58537 0.0070 0.3502 -0.09840 2019 2 24 58538 0.0069 0.3519 -0.10031 2019 2 25 58539 0.0067 0.3535 -0.10205 2019 2 26 58540 0.0066 0.3552 -0.10363 2019 2 27 58541 0.0065 0.3569 -0.10510 2019 2 28 58542 0.0065 0.3585 -0.10641 2019 3 1 58543 0.0065 0.3602 -0.10765 2019 3 2 58544 0.0065 0.3618 -0.10890 2019 3 3 58545 0.0065 0.3635 -0.11022 2019 3 4 58546 0.0066 0.3652 -0.11167 2019 3 5 58547 0.0067 0.3668 -0.11324 2019 3 6 58548 0.0069 0.3685 -0.11492 2019 3 7 58549 0.0070 0.3701 -0.11674 2019 3 8 58550 0.0072 0.3718 -0.11871 2019 3 9 58551 0.0075 0.3734 -0.12075 2019 3 10 58552 0.0077 0.3751 -0.12280 2019 3 11 58553 0.0080 0.3767 -0.12478 2019 3 12 58554 0.0084 0.3783 -0.12665 2019 3 13 58555 0.0087 0.3800 -0.12836 2019 3 14 58556 0.0091 0.3816 -0.12995 2019 3 15 58557 0.0095 0.3832 -0.13155 2019 3 16 58558 0.0100 0.3848 -0.13315 2019 3 17 58559 0.0105 0.3864 -0.13480 2019 3 18 58560 0.0110 0.3880 -0.13657 2019 3 19 58561 0.0115 0.3896 -0.13849 2019 3 20 58562 0.0121 0.3912 -0.14060 2019 3 21 58563 0.0127 0.3927 -0.14286 2019 3 22 58564 0.0133 0.3943 -0.14520 2019 3 23 58565 0.0140 0.3958 -0.14753 2019 3 24 58566 0.0147 0.3974 -0.14976 2019 3 25 58567 0.0154 0.3989 -0.15180 2019 3 26 58568 0.0162 0.4004 -0.15356 2019 3 27 58569 0.0169 0.4019 -0.15514 2019 3 28 58570 0.0178 0.4034 -0.15662 2019 3 29 58571 0.0186 0.4049 -0.15801 2019 3 30 58572 0.0195 0.4064 -0.15937 2019 3 31 58573 0.0204 0.4078 -0.16074 2019 4 1 58574 0.0213 0.4093 -0.16214 2019 4 2 58575 0.0222 0.4107 -0.16361 2019 4 3 58576 0.0232 0.4121 -0.16529 2019 4 4 58577 0.0242 0.4135 -0.16711 2019 4 5 58578 0.0252 0.4148 -0.16895 2019 4 6 58579 0.0263 0.4162 -0.17075 2019 4 7 58580 0.0274 0.4175 -0.17250 2019 4 8 58581 0.0285 0.4189 -0.17422 2019 4 9 58582 0.0296 0.4202 -0.17585 2019 4 10 58583 0.0308 0.4215 -0.17734 2019 4 11 58584 0.0320 0.4227 -0.17872 2019 4 12 58585 0.0332 0.4240 -0.18007 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) 58191 -102.86 0.17 -10.86 0.25 58192 -102.77 0.17 -10.80 0.25 58193 -102.73 0.17 -10.66 0.25 58194 -102.71 0.08 -10.49 0.35 58195 -102.73 0.08 -10.42 0.29 58196 -102.79 0.08 -10.53 0.29 58197 -102.85 0.08 -10.76 0.19 58198 -102.91 0.06 -10.98 0.20 58199 -103.04 0.06 -11.10 0.20 58200 -103.24 0.06 -11.11 0.20 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58191 -0.054 0.066 -0.260 0.251 58192 -0.057 0.066 -0.263 0.251 58193 -0.055 0.066 -0.264 0.251 58194 -0.049 0.033 -0.260 0.348 58195 -0.041 0.033 -0.251 0.290 58196 -0.031 0.033 -0.239 0.290 58197 -0.021 0.032 -0.226 0.193 58198 -0.013 0.025 -0.215 0.200 58199 -0.006 0.025 -0.205 0.200 58200 -0.000 0.025 -0.196 0.200 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).