********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 21 June 2018 Vol. XXXI No. 025 ______________________________________________________________________ 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 6 15 58284 0.13316 .00009 0.44442 .00009 0.069295 0.000033 18 6 16 58285 0.13425 .00009 0.44333 .00009 0.069102 0.000032 18 6 17 58286 0.13548 .00009 0.44203 .00009 0.068880 0.000030 18 6 18 58287 0.13688 .00009 0.44077 .00009 0.068603 0.000026 18 6 19 58288 0.13853 .00009 0.43964 .00009 0.068227 0.000023 18 6 20 58289 0.14047 .00009 0.43869 .00009 0.067739 0.000022 18 6 21 58290 0.14253 .00009 0.43801 .00009 0.067260 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 = 0.1074 + 0.0492 cos A + 0.1237 sin A - 0.0086 cos C - 0.0219 sin C y = 0.3446 + 0.1181 cos A - 0.0462 sin A - 0.0219 cos C + 0.0086 sin C UT1-UTC = 0.0951 - 0.00074 (MJD - 58298) - (UT2-UT1) where A = 2*pi*(MJD-58290)/365.25 and C = 2*pi*(MJD-58290)/435. TAI-UTC(MJD 58291) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58290)**0.80 S t = 0.00025 (MJD-58290)**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 22 58291 0.1444 0.4375 0.06688 2018 6 23 58292 0.1462 0.4371 0.06666 2018 6 24 58293 0.1477 0.4367 0.06664 2018 6 25 58294 0.1492 0.4363 0.06681 2018 6 26 58295 0.1506 0.4357 0.06715 2018 6 27 58296 0.1520 0.4352 0.06762 2018 6 28 58297 0.1533 0.4346 0.06820 2018 6 29 58298 0.1547 0.4339 0.06885 2018 6 30 58299 0.1561 0.4333 0.06951 2018 7 1 58300 0.1574 0.4326 0.07012 2018 7 2 58301 0.1587 0.4319 0.07064 2018 7 3 58302 0.1600 0.4313 0.07100 2018 7 4 58303 0.1613 0.4305 0.07119 2018 7 5 58304 0.1625 0.4298 0.07123 2018 7 6 58305 0.1637 0.4290 0.07115 2018 7 7 58306 0.1649 0.4281 0.07097 2018 7 8 58307 0.1661 0.4272 0.07074 2018 7 9 58308 0.1673 0.4263 0.07051 2018 7 10 58309 0.1685 0.4254 0.07034 2018 7 11 58310 0.1697 0.4245 0.07026 2018 7 12 58311 0.1709 0.4235 0.07026 2018 7 13 58312 0.1721 0.4226 0.07027 2018 7 14 58313 0.1732 0.4217 0.07022 2018 7 15 58314 0.1743 0.4208 0.07006 2018 7 16 58315 0.1754 0.4199 0.06976 2018 7 17 58316 0.1765 0.4189 0.06936 2018 7 18 58317 0.1775 0.4179 0.06891 2018 7 19 58318 0.1785 0.4170 0.06850 2018 7 20 58319 0.1795 0.4160 0.06821 2018 7 21 58320 0.1805 0.4149 0.06806 2018 7 22 58321 0.1815 0.4139 0.06809 2018 7 23 58322 0.1824 0.4129 0.06827 2018 7 24 58323 0.1833 0.4118 0.06859 2018 7 25 58324 0.1842 0.4107 0.06901 2018 7 26 58325 0.1851 0.4096 0.06949 2018 7 27 58326 0.1859 0.4085 0.06996 2018 7 28 58327 0.1867 0.4074 0.07040 2018 7 29 58328 0.1875 0.4063 0.07076 2018 7 30 58329 0.1883 0.4051 0.07100 2018 7 31 58330 0.1890 0.4040 0.07112 2018 8 1 58331 0.1898 0.4028 0.07111 2018 8 2 58332 0.1905 0.4016 0.07100 2018 8 3 58333 0.1912 0.4004 0.07083 2018 8 4 58334 0.1918 0.3992 0.07063 2018 8 5 58335 0.1925 0.3980 0.07045 2018 8 6 58336 0.1931 0.3968 0.07035 2018 8 7 58337 0.1937 0.3956 0.07034 2018 8 8 58338 0.1942 0.3943 0.07043 2018 8 9 58339 0.1948 0.3931 0.07057 2018 8 10 58340 0.1953 0.3918 0.07067 2018 8 11 58341 0.1958 0.3906 0.07067 2018 8 12 58342 0.1962 0.3893 0.07051 2018 8 13 58343 0.1967 0.3880 0.07019 2018 8 14 58344 0.1971 0.3867 0.06977 2018 8 15 58345 0.1975 0.3854 0.06932 2018 8 16 58346 0.1978 0.3841 0.06894 2018 8 17 58347 0.1981 0.3828 0.06869 2018 8 18 58348 0.1984 0.3815 0.06859 2018 8 19 58349 0.1987 0.3802 0.06866 2018 8 20 58350 0.1990 0.3789 0.06886 2018 8 21 58351 0.1992 0.3775 0.06917 2018 8 22 58352 0.1994 0.3762 0.06953 2018 8 23 58353 0.1996 0.3749 0.06989 2018 8 24 58354 0.1997 0.3735 0.07022 2018 8 25 58355 0.1999 0.3722 0.07046 2018 8 26 58356 0.2000 0.3708 0.07060 2018 8 27 58357 0.2000 0.3695 0.07060 2018 8 28 58358 0.2001 0.3681 0.07047 2018 8 29 58359 0.2001 0.3668 0.07022 2018 8 30 58360 0.2001 0.3654 0.06989 2018 8 31 58361 0.2000 0.3641 0.06952 2018 9 1 58362 0.2000 0.3627 0.06917 2018 9 2 58363 0.1999 0.3614 0.06886 2018 9 3 58364 0.1998 0.3600 0.06862 2018 9 4 58365 0.1996 0.3587 0.06845 2018 9 5 58366 0.1995 0.3573 0.06831 2018 9 6 58367 0.1993 0.3560 0.06814 2018 9 7 58368 0.1990 0.3546 0.06787 2018 9 8 58369 0.1988 0.3533 0.06742 2018 9 9 58370 0.1985 0.3519 0.06676 2018 9 10 58371 0.1982 0.3506 0.06591 2018 9 11 58372 0.1979 0.3493 0.06496 2018 9 12 58373 0.1975 0.3479 0.06400 2018 9 13 58374 0.1971 0.3466 0.06312 2018 9 14 58375 0.1967 0.3453 0.06239 2018 9 15 58376 0.1963 0.3440 0.06181 2018 9 16 58377 0.1959 0.3427 0.06140 2018 9 17 58378 0.1954 0.3414 0.06110 2018 9 18 58379 0.1949 0.3401 0.06089 2018 9 19 58380 0.1943 0.3388 0.06071 2018 9 20 58381 0.1938 0.3375 0.06050 2018 9 21 58382 0.1932 0.3362 0.06023 2018 9 22 58383 0.1926 0.3350 0.05985 2018 9 23 58384 0.1919 0.3337 0.05934 2018 9 24 58385 0.1913 0.3325 0.05869 2018 9 25 58386 0.1906 0.3312 0.05791 2018 9 26 58387 0.1899 0.3300 0.05703 2018 9 27 58388 0.1892 0.3288 0.05610 2018 9 28 58389 0.1884 0.3276 0.05517 2018 9 29 58390 0.1876 0.3264 0.05429 2018 9 30 58391 0.1869 0.3252 0.05351 2018 10 1 58392 0.1860 0.3240 0.05282 2018 10 2 58393 0.1852 0.3229 0.05219 2018 10 3 58394 0.1843 0.3217 0.05156 2018 10 4 58395 0.1834 0.3206 0.05088 2018 10 5 58396 0.1825 0.3195 0.05005 2018 10 6 58397 0.1816 0.3184 0.04905 2018 10 7 58398 0.1806 0.3173 0.04785 2018 10 8 58399 0.1796 0.3162 0.04650 2018 10 9 58400 0.1787 0.3151 0.04510 2018 10 10 58401 0.1776 0.3141 0.04374 2018 10 11 58402 0.1766 0.3130 0.04250 2018 10 12 58403 0.1755 0.3120 0.04142 2018 10 13 58404 0.1745 0.3110 0.04051 2018 10 14 58405 0.1734 0.3100 0.03975 2018 10 15 58406 0.1722 0.3090 0.03910 2018 10 16 58407 0.1711 0.3081 0.03850 2018 10 17 58408 0.1700 0.3072 0.03791 2018 10 18 58409 0.1688 0.3062 0.03727 2018 10 19 58410 0.1676 0.3053 0.03654 2018 10 20 58411 0.1664 0.3044 0.03569 2018 10 21 58412 0.1652 0.3036 0.03470 2018 10 22 58413 0.1639 0.3027 0.03359 2018 10 23 58414 0.1627 0.3019 0.03236 2018 10 24 58415 0.1614 0.3011 0.03107 2018 10 25 58416 0.1601 0.3003 0.02977 2018 10 26 58417 0.1588 0.2995 0.02853 2018 10 27 58418 0.1575 0.2988 0.02739 2018 10 28 58419 0.1562 0.2980 0.02638 2018 10 29 58420 0.1548 0.2973 0.02548 2018 10 30 58421 0.1535 0.2966 0.02462 2018 10 31 58422 0.1521 0.2960 0.02375 2018 11 1 58423 0.1507 0.2953 0.02279 2018 11 2 58424 0.1493 0.2947 0.02168 2018 11 3 58425 0.1479 0.2941 0.02043 2018 11 4 58426 0.1465 0.2935 0.01903 2018 11 5 58427 0.1451 0.2929 0.01757 2018 11 6 58428 0.1436 0.2924 0.01611 2018 11 7 58429 0.1422 0.2919 0.01475 2018 11 8 58430 0.1407 0.2914 0.01354 2018 11 9 58431 0.1393 0.2909 0.01250 2018 11 10 58432 0.1378 0.2904 0.01163 2018 11 11 58433 0.1363 0.2900 0.01090 2018 11 12 58434 0.1348 0.2896 0.01027 2018 11 13 58435 0.1333 0.2892 0.00967 2018 11 14 58436 0.1318 0.2889 0.00907 2018 11 15 58437 0.1303 0.2885 0.00840 2018 11 16 58438 0.1288 0.2882 0.00763 2018 11 17 58439 0.1272 0.2879 0.00674 2018 11 18 58440 0.1257 0.2877 0.00573 2018 11 19 58441 0.1242 0.2874 0.00461 2018 11 20 58442 0.1226 0.2872 0.00341 2018 11 21 58443 0.1211 0.2870 0.00217 2018 11 22 58444 0.1195 0.2868 0.00096 2018 11 23 58445 0.1180 0.2867 -0.00016 2018 11 24 58446 0.1164 0.2866 -0.00115 2018 11 25 58447 0.1149 0.2865 -0.00202 2018 11 26 58448 0.1133 0.2864 -0.00280 2018 11 27 58449 0.1118 0.2863 -0.00357 2018 11 28 58450 0.1102 0.2863 -0.00440 2018 11 29 58451 0.1086 0.2863 -0.00534 2018 11 30 58452 0.1071 0.2863 -0.00642 2018 12 1 58453 0.1055 0.2864 -0.00762 2018 12 2 58454 0.1040 0.2865 -0.00888 2018 12 3 58455 0.1024 0.2866 -0.01014 2018 12 4 58456 0.1009 0.2867 -0.01132 2018 12 5 58457 0.0993 0.2868 -0.01237 2018 12 6 58458 0.0978 0.2870 -0.01326 2018 12 7 58459 0.0962 0.2872 -0.01397 2018 12 8 58460 0.0947 0.2874 -0.01453 2018 12 9 58461 0.0932 0.2877 -0.01498 2018 12 10 58462 0.0916 0.2879 -0.01537 2018 12 11 58463 0.0901 0.2882 -0.01574 2018 12 12 58464 0.0886 0.2885 -0.01615 2018 12 13 58465 0.0871 0.2889 -0.01664 2018 12 14 58466 0.0856 0.2892 -0.01722 2018 12 15 58467 0.0841 0.2896 -0.01792 2018 12 16 58468 0.0826 0.2900 -0.01872 2018 12 17 58469 0.0811 0.2905 -0.01960 2018 12 18 58470 0.0797 0.2909 -0.02052 2018 12 19 58471 0.0782 0.2914 -0.02145 2018 12 20 58472 0.0768 0.2919 -0.02232 2018 12 21 58473 0.0753 0.2924 -0.02307 2018 12 22 58474 0.0739 0.2930 -0.02370 2018 12 23 58475 0.0725 0.2936 -0.02421 2018 12 24 58476 0.0711 0.2942 -0.02468 2018 12 25 58477 0.0697 0.2948 -0.02518 2018 12 26 58478 0.0683 0.2954 -0.02579 2018 12 27 58479 0.0669 0.2961 -0.02654 2018 12 28 58480 0.0656 0.2968 -0.02743 2018 12 29 58481 0.0642 0.2975 -0.02839 2018 12 30 58482 0.0629 0.2982 -0.02936 2018 12 31 58483 0.0616 0.2990 -0.03026 2019 1 1 58484 0.0603 0.2997 -0.03103 2019 1 2 58485 0.0590 0.3005 -0.03163 2019 1 3 58486 0.0577 0.3013 -0.03207 2019 1 4 58487 0.0565 0.3022 -0.03236 2019 1 5 58488 0.0552 0.3030 -0.03256 2019 1 6 58489 0.0540 0.3039 -0.03274 2019 1 7 58490 0.0528 0.3048 -0.03296 2019 1 8 58491 0.0516 0.3057 -0.03326 2019 1 9 58492 0.0505 0.3066 -0.03368 2019 1 10 58493 0.0493 0.3076 -0.03425 2019 1 11 58494 0.0482 0.3085 -0.03497 2019 1 12 58495 0.0471 0.3095 -0.03583 2019 1 13 58496 0.0460 0.3105 -0.03682 2019 1 14 58497 0.0449 0.3115 -0.03791 2019 1 15 58498 0.0439 0.3126 -0.03906 2019 1 16 58499 0.0428 0.3136 -0.04022 2019 1 17 58500 0.0418 0.3147 -0.04135 2019 1 18 58501 0.0409 0.3158 -0.04241 2019 1 19 58502 0.0399 0.3169 -0.04339 2019 1 20 58503 0.0389 0.3180 -0.04432 2019 1 21 58504 0.0380 0.3192 -0.04527 2019 1 22 58505 0.0371 0.3203 -0.04630 2019 1 23 58506 0.0362 0.3215 -0.04748 2019 1 24 58507 0.0354 0.3227 -0.04880 2019 1 25 58508 0.0346 0.3239 -0.05022 2019 1 26 58509 0.0337 0.3251 -0.05166 2019 1 27 58510 0.0330 0.3263 -0.05302 2019 1 28 58511 0.0322 0.3276 -0.05422 2019 1 29 58512 0.0315 0.3288 -0.05521 2019 1 30 58513 0.0308 0.3301 -0.05597 2019 1 31 58514 0.0301 0.3313 -0.05654 2019 2 1 58515 0.0294 0.3326 -0.05704 2019 2 2 58516 0.0288 0.3339 -0.05752 2019 2 3 58517 0.0282 0.3352 -0.05796 2019 2 4 58518 0.0276 0.3366 -0.05841 2019 2 5 58519 0.0270 0.3379 -0.05893 2019 2 6 58520 0.0265 0.3392 -0.05963 2019 2 7 58521 0.0260 0.3406 -0.06051 2019 2 8 58522 0.0255 0.3419 -0.06150 2019 2 9 58523 0.0250 0.3433 -0.06259 2019 2 10 58524 0.0246 0.3447 -0.06381 2019 2 11 58525 0.0242 0.3461 -0.06508 2019 2 12 58526 0.0238 0.3474 -0.06635 2019 2 13 58527 0.0235 0.3488 -0.06754 2019 2 14 58528 0.0231 0.3502 -0.06860 2019 2 15 58529 0.0228 0.3517 -0.06955 2019 2 16 58530 0.0226 0.3531 -0.07041 2019 2 17 58531 0.0223 0.3545 -0.07127 2019 2 18 58532 0.0221 0.3559 -0.07217 2019 2 19 58533 0.0219 0.3573 -0.07326 2019 2 20 58534 0.0218 0.3588 -0.07457 2019 2 21 58535 0.0216 0.3602 -0.07609 2019 2 22 58536 0.0215 0.3616 -0.07771 2019 2 23 58537 0.0215 0.3631 -0.07928 2019 2 24 58538 0.0214 0.3645 -0.08074 2019 2 25 58539 0.0214 0.3660 -0.08205 2019 2 26 58540 0.0214 0.3674 -0.08314 2019 2 27 58541 0.0214 0.3689 -0.08413 2019 2 28 58542 0.0215 0.3703 -0.08501 2019 3 1 58543 0.0216 0.3718 -0.08580 2019 3 2 58544 0.0217 0.3732 -0.08659 2019 3 3 58545 0.0219 0.3747 -0.08741 2019 3 4 58546 0.0220 0.3761 -0.08828 2019 3 5 58547 0.0223 0.3775 -0.08930 2019 3 6 58548 0.0225 0.3790 -0.09047 2019 3 7 58549 0.0227 0.3804 -0.09172 2019 3 8 58550 0.0230 0.3819 -0.09307 2019 3 9 58551 0.0233 0.3833 -0.09449 2019 3 10 58552 0.0237 0.3847 -0.09591 2019 3 11 58553 0.0241 0.3861 -0.09728 2019 3 12 58554 0.0245 0.3876 -0.09853 2019 3 13 58555 0.0249 0.3890 -0.09965 2019 3 14 58556 0.0253 0.3904 -0.10064 2019 3 15 58557 0.0258 0.3918 -0.10155 2019 3 16 58558 0.0263 0.3932 -0.10240 2019 3 17 58559 0.0269 0.3946 -0.10328 2019 3 18 58560 0.0274 0.3959 -0.10426 2019 3 19 58561 0.0280 0.3973 -0.10547 2019 3 20 58562 0.0286 0.3987 -0.10691 2019 3 21 58563 0.0292 0.4000 -0.10852 2019 3 22 58564 0.0299 0.4014 -0.11015 2019 3 23 58565 0.0306 0.4027 -0.11175 2019 3 24 58566 0.0313 0.4041 -0.11318 2019 3 25 58567 0.0321 0.4054 -0.11441 2019 3 26 58568 0.0328 0.4067 -0.11547 2019 3 27 58569 0.0336 0.4080 -0.11640 2019 3 28 58570 0.0344 0.4093 -0.11736 2019 3 29 58571 0.0353 0.4105 -0.11830 2019 3 30 58572 0.0361 0.4118 -0.11926 2019 3 31 58573 0.0370 0.4130 -0.12018 2019 4 1 58574 0.0379 0.4143 -0.12115 2019 4 2 58575 0.0389 0.4155 -0.12220 2019 4 3 58576 0.0398 0.4167 -0.12340 2019 4 4 58577 0.0408 0.4179 -0.12475 2019 4 5 58578 0.0418 0.4190 -0.12619 2019 4 6 58579 0.0429 0.4202 -0.12771 2019 4 7 58580 0.0439 0.4214 -0.12920 2019 4 8 58581 0.0450 0.4225 -0.13068 2019 4 9 58582 0.0461 0.4236 -0.13209 2019 4 10 58583 0.0472 0.4247 -0.13336 2019 4 11 58584 0.0483 0.4258 -0.13450 2019 4 12 58585 0.0495 0.4268 -0.13550 2019 4 13 58586 0.0506 0.4279 -0.13654 2019 4 14 58587 0.0518 0.4289 -0.13766 2019 4 15 58588 0.0531 0.4299 -0.13895 2019 4 16 58589 0.0543 0.4309 -0.14046 2019 4 17 58590 0.0555 0.4319 -0.14216 2019 4 18 58591 0.0568 0.4328 -0.14397 2019 4 19 58592 0.0581 0.4338 -0.14578 2019 4 20 58593 0.0594 0.4347 -0.14749 2019 4 21 58594 0.0607 0.4356 -0.14901 2019 4 22 58595 0.0621 0.4365 -0.15030 2019 4 23 58596 0.0634 0.4373 -0.15134 2019 4 24 58597 0.0648 0.4381 -0.15222 2019 4 25 58598 0.0662 0.4390 -0.15304 2019 4 26 58599 0.0676 0.4397 -0.15383 2019 4 27 58600 0.0690 0.4405 -0.15464 2019 4 28 58601 0.0705 0.4413 -0.15543 2019 4 29 58602 0.0719 0.4420 -0.15633 2019 4 30 58603 0.0734 0.4427 -0.15729 2019 5 1 58604 0.0748 0.4434 -0.15833 2019 5 2 58605 0.0763 0.4440 -0.15945 2019 5 3 58606 0.0778 0.4447 -0.16065 2019 5 4 58607 0.0793 0.4453 -0.16189 2019 5 5 58608 0.0809 0.4459 -0.16299 2019 5 6 58609 0.0824 0.4464 -0.16403 2019 5 7 58610 0.0840 0.4470 -0.16502 2019 5 8 58611 0.0855 0.4475 -0.16585 2019 5 9 58612 0.0871 0.4480 -0.16657 2019 5 10 58613 0.0886 0.4484 -0.16733 2019 5 11 58614 0.0902 0.4489 -0.16812 2019 5 12 58615 0.0918 0.4493 -0.16906 2019 5 13 58616 0.0934 0.4497 -0.17021 2019 5 14 58617 0.0950 0.4501 -0.17153 2019 5 15 58618 0.0966 0.4504 -0.17303 2019 5 16 58619 0.0982 0.4507 -0.17459 2019 5 17 58620 0.0999 0.4510 -0.17617 2019 5 18 58621 0.1015 0.4513 -0.17762 2019 5 19 58622 0.1031 0.4515 -0.17886 2019 5 20 58623 0.1048 0.4517 -0.17990 2019 5 21 58624 0.1064 0.4519 -0.18076 2019 5 22 58625 0.1081 0.4521 -0.18152 2019 5 23 58626 0.1097 0.4522 -0.18227 2019 5 24 58627 0.1114 0.4523 -0.18297 2019 5 25 58628 0.1130 0.4524 -0.18368 2019 5 26 58629 0.1147 0.4525 -0.18447 2019 5 27 58630 0.1163 0.4525 -0.18538 2019 5 28 58631 0.1180 0.4525 -0.18639 2019 5 29 58632 0.1196 0.4525 -0.18753 2019 5 30 58633 0.1213 0.4525 -0.18875 2019 5 31 58634 0.1229 0.4524 -0.18995 2019 6 1 58635 0.1246 0.4523 -0.19112 2019 6 2 58636 0.1262 0.4522 -0.19216 2019 6 3 58637 0.1279 0.4520 -0.19301 2019 6 4 58638 0.1295 0.4519 -0.19366 2019 6 5 58639 0.1311 0.4517 -0.19420 2019 6 6 58640 0.1328 0.4514 -0.19470 2019 6 7 58641 0.1344 0.4512 -0.19527 2019 6 8 58642 0.1360 0.4509 -0.19594 2019 6 9 58643 0.1376 0.4506 -0.19667 2019 6 10 58644 0.1393 0.4503 -0.19758 2019 6 11 58645 0.1409 0.4499 -0.19856 2019 6 12 58646 0.1425 0.4495 -0.19959 2019 6 13 58647 0.1440 0.4491 -0.20067 2019 6 14 58648 0.1456 0.4487 -0.20173 2019 6 15 58649 0.1472 0.4482 -0.20265 2019 6 16 58650 0.1488 0.4478 -0.20339 2019 6 17 58651 0.1503 0.4472 -0.20398 2019 6 18 58652 0.1519 0.4467 -0.20434 2019 6 19 58653 0.1534 0.4461 -0.20459 2019 6 20 58654 0.1549 0.4456 -0.20483 2019 6 21 58655 0.1564 0.4450 -0.20506 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) 58269 -104.43 0.29 -12.02 0.11 58270 -104.47 0.29 -12.13 0.11 58271 -104.53 0.29 -12.19 0.11 58272 -104.64 0.32 -12.23 0.10 58273 -104.73 0.32 -12.27 0.10 58274 -104.66 0.48 -12.26 0.11 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58269 -0.130 0.116 -0.124 0.106 58270 -0.132 0.116 -0.116 0.106 58271 -0.138 0.116 -0.111 0.106 58272 -0.146 0.127 -0.107 0.099 58273 -0.156 0.127 -0.104 0.099 58274 -0.166 0.193 -0.102 0.110 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).