********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 22 February 2018 Vol. XXXI No. 008 ______________________________________________________________________ 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 = +0.2 seconds beginning 30 Nov 2017 at 0000 UTC = +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 * * * * It is anticipated that the IERS RS/PC will transition its EOP * * solution to be consistent with the 14 C04 EOP system on * * 15-March-2018. If the transition cannot be done by that date, * * alternative dates to implement the change could be 22-March-2018, * * 29-March-2018, or 05-April-2018. * * * * 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 2 16 58165 0.00143 .00009 0.31500 .00009 0.179149 0.000006 18 2 17 58166 0.00108 .00009 0.31650 .00009 0.178164 0.000005 18 2 18 58167 0.00083 .00009 0.31799 .00009 0.177092 0.000005 18 2 19 58168 0.00087 .00009 0.31969 .00009 0.175955 0.000014 18 2 20 58169 0.00125 .00009 0.32181 .00009 0.174796 0.000017 18 2 21 58170 0.00188 .00009 0.32436 .00009 0.173651 0.000018 18 2 22 58171 0.00247 .00009 0.32703 .00009 0.172548 0.000020 _______________________________________________________________________ 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 = 0.1219 - 0.1266 cos A - 0.0448 sin A + 0.0036 cos C + 0.0188 sin C y = 0.3523 - 0.0425 cos A + 0.1173 sin A + 0.0188 cos C - 0.0036 sin C UT1-UTC = 0.1827 - 0.00093 (MJD - 58179) - (UT2-UT1) where A = 2*pi*(MJD-58171)/365.25 and C = 2*pi*(MJD-58171)/435. TAI-UTC(MJD 58172) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58171)**0.80 S t = 0.00025 (MJD-58171)**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 2 23 58172 0.0027 0.3296 0.17152 2018 2 24 58173 0.0027 0.3319 0.17060 2018 2 25 58174 0.0024 0.3340 0.16979 2018 2 26 58175 0.0022 0.3359 0.16904 2018 2 27 58176 0.0019 0.3378 0.16829 2018 2 28 58177 0.0017 0.3396 0.16749 2018 3 1 58178 0.0015 0.3414 0.16660 2018 3 2 58179 0.0013 0.3432 0.16558 2018 3 3 58180 0.0012 0.3450 0.16445 2018 3 4 58181 0.0010 0.3467 0.16325 2018 3 5 58182 0.0009 0.3485 0.16203 2018 3 6 58183 0.0009 0.3503 0.16088 2018 3 7 58184 0.0008 0.3520 0.15983 2018 3 8 58185 0.0008 0.3538 0.15889 2018 3 9 58186 0.0008 0.3555 0.15804 2018 3 10 58187 0.0008 0.3572 0.15724 2018 3 11 58188 0.0009 0.3589 0.15645 2018 3 12 58189 0.0011 0.3607 0.15563 2018 3 13 58190 0.0013 0.3624 0.15474 2018 3 14 58191 0.0015 0.3641 0.15372 2018 3 15 58192 0.0017 0.3659 0.15254 2018 3 16 58193 0.0019 0.3676 0.15118 2018 3 17 58194 0.0022 0.3693 0.14965 2018 3 18 58195 0.0025 0.3710 0.14800 2018 3 19 58196 0.0029 0.3727 0.14627 2018 3 20 58197 0.0033 0.3744 0.14454 2018 3 21 58198 0.0037 0.3761 0.14288 2018 3 22 58199 0.0042 0.3778 0.14134 2018 3 23 58200 0.0047 0.3795 0.13994 2018 3 24 58201 0.0052 0.3811 0.13868 2018 3 25 58202 0.0057 0.3828 0.13751 2018 3 26 58203 0.0063 0.3845 0.13637 2018 3 27 58204 0.0069 0.3861 0.13519 2018 3 28 58205 0.0076 0.3877 0.13391 2018 3 29 58206 0.0083 0.3894 0.13251 2018 3 30 58207 0.0090 0.3910 0.13099 2018 3 31 58208 0.0097 0.3926 0.12941 2018 4 1 58209 0.0105 0.3942 0.12783 2018 4 2 58210 0.0113 0.3958 0.12632 2018 4 3 58211 0.0121 0.3974 0.12494 2018 4 4 58212 0.0130 0.3989 0.12370 2018 4 5 58213 0.0139 0.4005 0.12260 2018 4 6 58214 0.0148 0.4020 0.12163 2018 4 7 58215 0.0158 0.4035 0.12075 2018 4 8 58216 0.0168 0.4050 0.11991 2018 4 9 58217 0.0178 0.4065 0.11906 2018 4 10 58218 0.0188 0.4080 0.11815 2018 4 11 58219 0.0199 0.4095 0.11714 2018 4 12 58220 0.0210 0.4109 0.11599 2018 4 13 58221 0.0221 0.4124 0.11468 2018 4 14 58222 0.0232 0.4138 0.11323 2018 4 15 58223 0.0244 0.4152 0.11166 2018 4 16 58224 0.0256 0.4166 0.11003 2018 4 17 58225 0.0269 0.4179 0.10843 2018 4 18 58226 0.0281 0.4193 0.10691 2018 4 19 58227 0.0294 0.4206 0.10553 2018 4 20 58228 0.0307 0.4219 0.10429 2018 4 21 58229 0.0320 0.4232 0.10315 2018 4 22 58230 0.0334 0.4245 0.10206 2018 4 23 58231 0.0348 0.4257 0.10095 2018 4 24 58232 0.0362 0.4269 0.09975 2018 4 25 58233 0.0376 0.4282 0.09843 2018 4 26 58234 0.0390 0.4293 0.09701 2018 4 27 58235 0.0405 0.4305 0.09551 2018 4 28 58236 0.0420 0.4316 0.09400 2018 4 29 58237 0.0435 0.4328 0.09256 2018 4 30 58238 0.0451 0.4339 0.09123 2018 5 1 58239 0.0466 0.4349 0.09006 2018 5 2 58240 0.0482 0.4360 0.08905 2018 5 3 58241 0.0498 0.4370 0.08819 2018 5 4 58242 0.0514 0.4380 0.08745 2018 5 5 58243 0.0531 0.4390 0.08679 2018 5 6 58244 0.0547 0.4400 0.08616 2018 5 7 58245 0.0564 0.4409 0.08551 2018 5 8 58246 0.0581 0.4418 0.08480 2018 5 9 58247 0.0598 0.4427 0.08399 2018 5 10 58248 0.0615 0.4435 0.08306 2018 5 11 58249 0.0632 0.4444 0.08201 2018 5 12 58250 0.0650 0.4452 0.08085 2018 5 13 58251 0.0668 0.4459 0.07963 2018 5 14 58252 0.0686 0.4467 0.07840 2018 5 15 58253 0.0704 0.4474 0.07724 2018 5 16 58254 0.0722 0.4481 0.07621 2018 5 17 58255 0.0740 0.4488 0.07534 2018 5 18 58256 0.0758 0.4494 0.07460 2018 5 19 58257 0.0777 0.4500 0.07395 2018 5 20 58258 0.0795 0.4506 0.07330 2018 5 21 58259 0.0814 0.4512 0.07259 2018 5 22 58260 0.0833 0.4517 0.07179 2018 5 23 58261 0.0852 0.4522 0.07091 2018 5 24 58262 0.0871 0.4527 0.06996 2018 5 25 58263 0.0890 0.4531 0.06900 2018 5 26 58264 0.0909 0.4535 0.06810 2018 5 27 58265 0.0928 0.4539 0.06729 2018 5 28 58266 0.0948 0.4543 0.06663 2018 5 29 58267 0.0967 0.4546 0.06613 2018 5 30 58268 0.0987 0.4549 0.06578 2018 5 31 58269 0.1006 0.4552 0.06557 2018 6 1 58270 0.1026 0.4554 0.06545 2018 6 2 58271 0.1045 0.4556 0.06538 2018 6 3 58272 0.1065 0.4558 0.06532 2018 6 4 58273 0.1085 0.4560 0.06522 2018 6 5 58274 0.1104 0.4561 0.06504 2018 6 6 58275 0.1124 0.4562 0.06475 2018 6 7 58276 0.1144 0.4563 0.06435 2018 6 8 58277 0.1164 0.4563 0.06383 2018 6 9 58278 0.1183 0.4563 0.06322 2018 6 10 58279 0.1203 0.4563 0.06257 2018 6 11 58280 0.1223 0.4562 0.06194 2018 6 12 58281 0.1242 0.4561 0.06140 2018 6 13 58282 0.1262 0.4560 0.06098 2018 6 14 58283 0.1282 0.4559 0.06070 2018 6 15 58284 0.1301 0.4557 0.06051 2018 6 16 58285 0.1321 0.4555 0.06035 2018 6 17 58286 0.1341 0.4553 0.06013 2018 6 18 58287 0.1360 0.4550 0.05981 2018 6 19 58288 0.1380 0.4547 0.05939 2018 6 20 58289 0.1399 0.4544 0.05890 2018 6 21 58290 0.1418 0.4540 0.05840 2018 6 22 58291 0.1438 0.4537 0.05794 2018 6 23 58292 0.1457 0.4533 0.05757 2018 6 24 58293 0.1476 0.4528 0.05734 2018 6 25 58294 0.1495 0.4524 0.05726 2018 6 26 58295 0.1514 0.4519 0.05733 2018 6 27 58296 0.1533 0.4513 0.05752 2018 6 28 58297 0.1551 0.4508 0.05782 2018 6 29 58298 0.1570 0.4502 0.05816 2018 6 30 58299 0.1588 0.4496 0.05852 2018 7 1 58300 0.1607 0.4490 0.05884 2018 7 2 58301 0.1625 0.4483 0.05909 2018 7 3 58302 0.1643 0.4476 0.05923 2018 7 4 58303 0.1661 0.4469 0.05925 2018 7 5 58304 0.1679 0.4461 0.05916 2018 7 6 58305 0.1697 0.4454 0.05897 2018 7 7 58306 0.1714 0.4446 0.05872 2018 7 8 58307 0.1732 0.4437 0.05846 2018 7 9 58308 0.1749 0.4429 0.05823 2018 7 10 58309 0.1766 0.4420 0.05809 2018 7 11 58310 0.1783 0.4411 0.05805 2018 7 12 58311 0.1799 0.4402 0.05811 2018 7 13 58312 0.1816 0.4392 0.05820 2018 7 14 58313 0.1832 0.4382 0.05824 2018 7 15 58314 0.1849 0.4372 0.05817 2018 7 16 58315 0.1865 0.4362 0.05795 2018 7 17 58316 0.1880 0.4351 0.05763 2018 7 18 58317 0.1896 0.4341 0.05724 2018 7 19 58318 0.1911 0.4329 0.05688 2018 7 20 58319 0.1926 0.4318 0.05661 2018 7 21 58320 0.1941 0.4307 0.05647 2018 7 22 58321 0.1956 0.4295 0.05647 2018 7 23 58322 0.1970 0.4283 0.05661 2018 7 24 58323 0.1985 0.4271 0.05688 2018 7 25 58324 0.1999 0.4259 0.05723 2018 7 26 58325 0.2012 0.4246 0.05764 2018 7 27 58326 0.2026 0.4233 0.05805 2018 7 28 58327 0.2039 0.4220 0.05841 2018 7 29 58328 0.2052 0.4207 0.05869 2018 7 30 58329 0.2065 0.4193 0.05886 2018 7 31 58330 0.2078 0.4180 0.05890 2018 8 1 58331 0.2090 0.4166 0.05881 2018 8 2 58332 0.2102 0.4152 0.05861 2018 8 3 58333 0.2114 0.4138 0.05833 2018 8 4 58334 0.2125 0.4124 0.05802 2018 8 5 58335 0.2136 0.4109 0.05772 2018 8 6 58336 0.2147 0.4094 0.05747 2018 8 7 58337 0.2158 0.4080 0.05730 2018 8 8 58338 0.2168 0.4065 0.05721 2018 8 9 58339 0.2178 0.4049 0.05715 2018 8 10 58340 0.2188 0.4034 0.05705 2018 8 11 58341 0.2197 0.4019 0.05684 2018 8 12 58342 0.2206 0.4003 0.05646 2018 8 13 58343 0.2215 0.3987 0.05591 2018 8 14 58344 0.2224 0.3971 0.05525 2018 8 15 58345 0.2232 0.3955 0.05457 2018 8 16 58346 0.2240 0.3939 0.05395 2018 8 17 58347 0.2248 0.3923 0.05345 2018 8 18 58348 0.2255 0.3906 0.05311 2018 8 19 58349 0.2262 0.3890 0.05294 2018 8 20 58350 0.2269 0.3873 0.05291 2018 8 21 58351 0.2275 0.3857 0.05300 2018 8 22 58352 0.2281 0.3840 0.05316 2018 8 23 58353 0.2287 0.3823 0.05336 2018 8 24 58354 0.2292 0.3806 0.05356 2018 8 25 58355 0.2298 0.3789 0.05372 2018 8 26 58356 0.2302 0.3772 0.05381 2018 8 27 58357 0.2307 0.3755 0.05383 2018 8 28 58358 0.2311 0.3737 0.05376 2018 8 29 58359 0.2315 0.3720 0.05364 2018 8 30 58360 0.2318 0.3702 0.05349 2018 8 31 58361 0.2321 0.3685 0.05333 2018 9 1 58362 0.2324 0.3667 0.05319 2018 9 2 58363 0.2327 0.3650 0.05309 2018 9 3 58364 0.2329 0.3632 0.05303 2018 9 4 58365 0.2330 0.3615 0.05300 2018 9 5 58366 0.2332 0.3597 0.05296 2018 9 6 58367 0.2333 0.3579 0.05284 2018 9 7 58368 0.2334 0.3562 0.05257 2018 9 8 58369 0.2334 0.3544 0.05210 2018 9 9 58370 0.2334 0.3526 0.05140 2018 9 10 58371 0.2334 0.3508 0.05050 2018 9 11 58372 0.2334 0.3491 0.04949 2018 9 12 58373 0.2333 0.3473 0.04846 2018 9 13 58374 0.2332 0.3455 0.04750 2018 9 14 58375 0.2330 0.3438 0.04666 2018 9 15 58376 0.2328 0.3420 0.04597 2018 9 16 58377 0.2326 0.3402 0.04540 2018 9 17 58378 0.2323 0.3385 0.04492 2018 9 18 58379 0.2321 0.3367 0.04447 2018 9 19 58380 0.2317 0.3350 0.04401 2018 9 20 58381 0.2314 0.3332 0.04349 2018 9 21 58382 0.2310 0.3315 0.04285 2018 9 22 58383 0.2306 0.3297 0.04205 2018 9 23 58384 0.2301 0.3280 0.04108 2018 9 24 58385 0.2296 0.3263 0.03994 2018 9 25 58386 0.2291 0.3246 0.03863 2018 9 26 58387 0.2286 0.3229 0.03720 2018 9 27 58388 0.2280 0.3212 0.03570 2018 9 28 58389 0.2274 0.3195 0.03419 2018 9 29 58390 0.2267 0.3178 0.03275 2018 9 30 58391 0.2260 0.3161 0.03140 2018 10 1 58392 0.2253 0.3145 0.03014 2018 10 2 58393 0.2246 0.3128 0.02891 2018 10 3 58394 0.2238 0.3112 0.02767 2018 10 4 58395 0.2230 0.3095 0.02633 2018 10 5 58396 0.2222 0.3079 0.02490 2018 10 6 58397 0.2213 0.3063 0.02327 2018 10 7 58398 0.2204 0.3047 0.02151 2018 10 8 58399 0.2195 0.3032 0.01967 2018 10 9 58400 0.2185 0.3016 0.01784 2018 10 10 58401 0.2176 0.3000 0.01605 2018 10 11 58402 0.2166 0.2985 0.01436 2018 10 12 58403 0.2155 0.2970 0.01281 2018 10 13 58404 0.2144 0.2955 0.01144 2018 10 14 58405 0.2133 0.2940 0.01030 2018 10 15 58406 0.2122 0.2925 0.00925 2018 10 16 58407 0.2111 0.2911 0.00830 2018 10 17 58408 0.2099 0.2896 0.00734 2018 10 18 58409 0.2087 0.2882 0.00625 2018 10 19 58410 0.2075 0.2868 0.00495 2018 10 20 58411 0.2062 0.2855 0.00350 2018 10 21 58412 0.2049 0.2841 0.00189 2018 10 22 58413 0.2036 0.2827 0.00012 2018 10 23 58414 0.2023 0.2814 -0.00170 2018 10 24 58415 0.2009 0.2801 -0.00356 2018 10 25 58416 0.1995 0.2788 -0.00543 2018 10 26 58417 0.1981 0.2776 -0.00723 2018 10 27 58418 0.1967 0.2763 -0.00886 2018 10 28 58419 0.1953 0.2751 -0.01037 2018 10 29 58420 0.1938 0.2739 -0.01173 2018 10 30 58421 0.1923 0.2728 -0.01302 2018 10 31 58422 0.1908 0.2716 -0.01439 2018 11 1 58423 0.1892 0.2705 -0.01584 2018 11 2 58424 0.1877 0.2694 -0.01735 2018 11 3 58425 0.1861 0.2683 -0.01899 2018 11 4 58426 0.1845 0.2672 -0.02080 2018 11 5 58427 0.1829 0.2662 -0.02271 2018 11 6 58428 0.1813 0.2652 -0.02459 2018 11 7 58429 0.1796 0.2642 -0.02635 2018 11 8 58430 0.1779 0.2633 -0.02795 2018 11 9 58431 0.1762 0.2623 -0.02932 2018 11 10 58432 0.1745 0.2614 -0.03054 2018 11 11 58433 0.1728 0.2606 -0.03163 2018 11 12 58434 0.1711 0.2597 -0.03265 2018 11 13 58435 0.1693 0.2589 -0.03353 2018 11 14 58436 0.1675 0.2581 -0.03446 2018 11 15 58437 0.1658 0.2573 -0.03552 2018 11 16 58438 0.1640 0.2566 -0.03667 2018 11 17 58439 0.1622 0.2558 -0.03801 2018 11 18 58440 0.1603 0.2551 -0.03950 2018 11 19 58441 0.1585 0.2545 -0.04109 2018 11 20 58442 0.1567 0.2538 -0.04280 2018 11 21 58443 0.1548 0.2532 -0.04460 2018 11 22 58444 0.1529 0.2527 -0.04636 2018 11 23 58445 0.1510 0.2521 -0.04804 2018 11 24 58446 0.1492 0.2516 -0.04965 2018 11 25 58447 0.1473 0.2511 -0.05117 2018 11 26 58448 0.1454 0.2506 -0.05267 2018 11 27 58449 0.1434 0.2502 -0.05417 2018 11 28 58450 0.1415 0.2498 -0.05572 2018 11 29 58451 0.1396 0.2494 -0.05742 2018 11 30 58452 0.1377 0.2491 -0.05929 2018 12 1 58453 0.1357 0.2488 -0.06127 2018 12 2 58454 0.1338 0.2485 -0.06329 2018 12 3 58455 0.1318 0.2482 -0.06525 2018 12 4 58456 0.1299 0.2480 -0.06709 2018 12 5 58457 0.1279 0.2478 -0.06871 2018 12 6 58458 0.1260 0.2476 -0.07015 2018 12 7 58459 0.1240 0.2475 -0.07150 2018 12 8 58460 0.1221 0.2474 -0.07272 2018 12 9 58461 0.1201 0.2473 -0.07382 2018 12 10 58462 0.1181 0.2472 -0.07484 2018 12 11 58463 0.1162 0.2472 -0.07579 2018 12 12 58464 0.1142 0.2472 -0.07674 2018 12 13 58465 0.1122 0.2473 -0.07776 2018 12 14 58466 0.1103 0.2473 -0.07890 2018 12 15 58467 0.1083 0.2474 -0.08021 2018 12 16 58468 0.1064 0.2476 -0.08168 2018 12 17 58469 0.1044 0.2477 -0.08326 2018 12 18 58470 0.1025 0.2479 -0.08482 2018 12 19 58471 0.1005 0.2481 -0.08639 2018 12 20 58472 0.0986 0.2484 -0.08793 2018 12 21 58473 0.0967 0.2487 -0.08935 2018 12 22 58474 0.0948 0.2490 -0.09062 2018 12 23 58475 0.0928 0.2493 -0.09177 2018 12 24 58476 0.0909 0.2497 -0.09283 2018 12 25 58477 0.0890 0.2501 -0.09390 2018 12 26 58478 0.0871 0.2505 -0.09518 2018 12 27 58479 0.0853 0.2510 -0.09663 2018 12 28 58480 0.0834 0.2514 -0.09815 2018 12 29 58481 0.0815 0.2520 -0.09968 2018 12 30 58482 0.0797 0.2525 -0.10117 2018 12 31 58483 0.0778 0.2531 -0.10263 2019 1 1 58484 0.0760 0.2537 -0.10397 2019 1 2 58485 0.0742 0.2543 -0.10513 2019 1 3 58486 0.0724 0.2549 -0.10611 2019 1 4 58487 0.0706 0.2556 -0.10700 2019 1 5 58488 0.0688 0.2563 -0.10781 2019 1 6 58489 0.0671 0.2571 -0.10867 2019 1 7 58490 0.0653 0.2578 -0.10951 2019 1 8 58491 0.0636 0.2586 -0.11038 2019 1 9 58492 0.0619 0.2594 -0.11133 2019 1 10 58493 0.0602 0.2603 -0.11237 2019 1 11 58494 0.0585 0.2611 -0.11350 2019 1 12 58495 0.0569 0.2620 -0.11472 2019 1 13 58496 0.0552 0.2630 -0.11611 2019 1 14 58497 0.0536 0.2639 -0.11761 2019 1 15 58498 0.0520 0.2649 -0.11914 2019 1 16 58499 0.0504 0.2659 -0.12060 2019 1 17 58500 0.0488 0.2669 -0.12191 2019 1 18 58501 0.0473 0.2679 -0.12312 2019 1 19 58502 0.0458 0.2690 -0.12419 2019 1 20 58503 0.0443 0.2701 -0.12514 2019 1 21 58504 0.0428 0.2712 -0.12601 2019 1 22 58505 0.0413 0.2723 -0.12694 2019 1 23 58506 0.0399 0.2735 -0.12809 2019 1 24 58507 0.0385 0.2747 -0.12945 2019 1 25 58508 0.0371 0.2759 -0.13091 2019 1 26 58509 0.0357 0.2771 -0.13239 2019 1 27 58510 0.0344 0.2783 -0.13374 2019 1 28 58511 0.0330 0.2796 -0.13497 2019 1 29 58512 0.0318 0.2809 -0.13602 2019 1 30 58513 0.0305 0.2822 -0.13694 2019 1 31 58514 0.0292 0.2835 -0.13774 2019 2 1 58515 0.0280 0.2849 -0.13841 2019 2 2 58516 0.0268 0.2862 -0.13901 2019 2 3 58517 0.0257 0.2876 -0.13962 2019 2 4 58518 0.0245 0.2890 -0.14024 2019 2 5 58519 0.0234 0.2904 -0.14090 2019 2 6 58520 0.0224 0.2919 -0.14172 2019 2 7 58521 0.0213 0.2933 -0.14268 2019 2 8 58522 0.0203 0.2948 -0.14374 2019 2 9 58523 0.0193 0.2963 -0.14498 2019 2 10 58524 0.0183 0.2978 -0.14625 2019 2 11 58525 0.0174 0.2993 -0.14752 2019 2 12 58526 0.0165 0.3008 -0.14877 2019 2 13 58527 0.0156 0.3023 -0.14992 2019 2 14 58528 0.0148 0.3039 -0.15099 2019 2 15 58529 0.0140 0.3055 -0.15198 2019 2 16 58530 0.0132 0.3070 -0.15293 2019 2 17 58531 0.0124 0.3086 -0.15395 2019 2 18 58532 0.0117 0.3102 -0.15512 2019 2 19 58533 0.0110 0.3119 -0.15648 2019 2 20 58534 0.0103 0.3135 -0.15800 2019 2 21 58535 0.0097 0.3151 -0.15967 2019 2 22 58536 0.0091 0.3168 -0.16143 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) 58145 -103.91 0.10 -8.42 0.04 58146 -104.50 0.30 -8.46 0.05 58147 -105.11 0.30 -8.63 0.05 58148 -105.36 0.30 -8.76 0.05 58149 -105.10 0.30 -8.77 0.04 58150 -104.47 0.30 -8.76 0.04 58151 -103.78 0.30 -8.88 0.04 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58145 0.165 0.040 -0.244 0.040 58146 0.159 0.119 -0.282 0.050 58147 0.178 0.119 -0.279 0.050 58148 0.195 0.119 -0.241 0.050 58149 0.181 0.119 -0.232 0.040 58150 0.146 0.119 -0.261 0.040 58151 0.113 0.119 -0.312 0.040 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).