********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 2 August 2018 Vol. XXXI No. 031 ______________________________________________________________________ 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 7 27 58326 0.19643 .00009 0.41050 .00009 0.069667 0.000008 18 7 28 58327 0.19699 .00009 0.40970 .00009 0.069783 0.000010 18 7 29 58328 0.19763 .00009 0.40873 .00009 0.069879 0.000009 18 7 30 58329 0.19822 .00009 0.40765 .00009 0.069926 0.000006 18 7 31 58330 0.19852 .00009 0.40647 .00009 0.069912 0.000006 18 8 1 58331 0.19873 .00009 0.40527 .00009 0.069812 0.000006 18 8 2 58332 0.19902 .00009 0.40425 .00009 0.069585 0.000006 IERS Final Values MJD x y UT1-UTC " " s 18 6 2 58271 0.1160 0.4468 0.07669 18 6 3 58272 0.1177 0.4468 0.07634 18 6 4 58273 0.1189 0.4469 0.07599 18 6 5 58274 0.1203 0.4470 0.07560 18 6 6 58275 0.1217 0.4472 0.07516 18 6 7 58276 0.1226 0.4473 0.07447 18 6 8 58277 0.1235 0.4472 0.07373 18 6 9 58278 0.1246 0.4468 0.07301 18 6 10 58279 0.1257 0.4463 0.07211 18 6 11 58280 0.1273 0.4457 0.07125 18 6 12 58281 0.1289 0.4454 0.07050 18 6 13 58282 0.1307 0.4453 0.07002 18 6 14 58283 0.1320 0.4452 0.06962 18 6 15 58284 0.1331 0.4445 0.06928 18 6 16 58285 0.1341 0.4434 0.06905 18 6 17 58286 0.1354 0.4420 0.06890 18 6 18 58287 0.1368 0.4408 0.06875 18 6 19 58288 0.1384 0.4397 0.06821 18 6 20 58289 0.1404 0.4386 0.06791 18 6 21 58290 0.1424 0.4381 0.06756 18 6 22 58291 0.1445 0.4374 0.06701 18 6 23 58292 0.1466 0.4366 0.06678 18 6 24 58293 0.1485 0.4359 0.06715 18 6 25 58294 0.1502 0.4350 0.06741 18 6 26 58295 0.1521 0.4339 0.06754 18 6 27 58296 0.1539 0.4327 0.06809 18 6 28 58297 0.1561 0.4316 0.06863 18 6 29 58298 0.1585 0.4309 0.06935 18 6 30 58299 0.1610 0.4304 0.07000 18 7 1 58300 0.1629 0.4298 0.07075 _______________________________________________________________________ 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 = 0.1133 + 0.1088 cos A + 0.0479 sin A - 0.0173 cos C + 0.0019 sin C y = 0.3552 + 0.0489 cos A - 0.1036 sin A + 0.0019 cos C + 0.0173 sin C UT1-UTC = 0.0492 - 0.00069 (MJD - 58340) - (UT2-UT1) where A = 2*pi*(MJD-58332)/365.25 and C = 2*pi*(MJD-58332)/435. TAI-UTC(MJD 58333) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58332)**0.80 S t = 0.00025 (MJD-58332)**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 8 3 58333 0.1994 0.4032 0.06927 2018 8 4 58334 0.1998 0.4021 0.06894 2018 8 5 58335 0.2002 0.4010 0.06864 2018 8 6 58336 0.2007 0.3999 0.06840 2018 8 7 58337 0.2012 0.3987 0.06824 2018 8 8 58338 0.2017 0.3975 0.06817 2018 8 9 58339 0.2021 0.3963 0.06813 2018 8 10 58340 0.2026 0.3951 0.06806 2018 8 11 58341 0.2031 0.3939 0.06787 2018 8 12 58342 0.2035 0.3926 0.06751 2018 8 13 58343 0.2040 0.3914 0.06698 2018 8 14 58344 0.2044 0.3902 0.06631 2018 8 15 58345 0.2048 0.3890 0.06561 2018 8 16 58346 0.2052 0.3878 0.06496 2018 8 17 58347 0.2055 0.3865 0.06439 2018 8 18 58348 0.2058 0.3853 0.06393 2018 8 19 58349 0.2060 0.3840 0.06360 2018 8 20 58350 0.2063 0.3827 0.06342 2018 8 21 58351 0.2065 0.3815 0.06333 2018 8 22 58352 0.2067 0.3802 0.06329 2018 8 23 58353 0.2068 0.3789 0.06326 2018 8 24 58354 0.2070 0.3777 0.06322 2018 8 25 58355 0.2071 0.3764 0.06310 2018 8 26 58356 0.2072 0.3751 0.06288 2018 8 27 58357 0.2072 0.3737 0.06254 2018 8 28 58358 0.2073 0.3724 0.06209 2018 8 29 58359 0.2073 0.3711 0.06157 2018 8 30 58360 0.2073 0.3698 0.06100 2018 8 31 58361 0.2073 0.3685 0.06042 2018 9 1 58362 0.2073 0.3672 0.05986 2018 9 2 58363 0.2072 0.3658 0.05939 2018 9 3 58364 0.2071 0.3645 0.05901 2018 9 4 58365 0.2070 0.3632 0.05871 2018 9 5 58366 0.2069 0.3619 0.05845 2018 9 6 58367 0.2067 0.3605 0.05817 2018 9 7 58368 0.2065 0.3592 0.05778 2018 9 8 58369 0.2063 0.3579 0.05722 2018 9 9 58370 0.2061 0.3566 0.05645 2018 9 10 58371 0.2058 0.3553 0.05550 2018 9 11 58372 0.2055 0.3540 0.05444 2018 9 12 58373 0.2052 0.3527 0.05337 2018 9 13 58374 0.2048 0.3514 0.05237 2018 9 14 58375 0.2045 0.3501 0.05150 2018 9 15 58376 0.2041 0.3488 0.05079 2018 9 16 58377 0.2036 0.3475 0.05022 2018 9 17 58378 0.2032 0.3462 0.04977 2018 9 18 58379 0.2027 0.3449 0.04939 2018 9 19 58380 0.2022 0.3437 0.04904 2018 9 20 58381 0.2017 0.3424 0.04866 2018 9 21 58382 0.2011 0.3411 0.04821 2018 9 22 58383 0.2006 0.3399 0.04767 2018 9 23 58384 0.2000 0.3386 0.04699 2018 9 24 58385 0.1993 0.3374 0.04618 2018 9 25 58386 0.1987 0.3362 0.04524 2018 9 26 58387 0.1980 0.3350 0.04421 2018 9 27 58388 0.1973 0.3338 0.04312 2018 9 28 58389 0.1966 0.3326 0.04204 2018 9 29 58390 0.1959 0.3314 0.04102 2018 9 30 58391 0.1951 0.3302 0.04009 2018 10 1 58392 0.1943 0.3290 0.03926 2018 10 2 58393 0.1935 0.3279 0.03848 2018 10 3 58394 0.1926 0.3268 0.03772 2018 10 4 58395 0.1918 0.3256 0.03690 2018 10 5 58396 0.1909 0.3245 0.03595 2018 10 6 58397 0.1900 0.3234 0.03483 2018 10 7 58398 0.1891 0.3223 0.03354 2018 10 8 58399 0.1881 0.3212 0.03212 2018 10 9 58400 0.1871 0.3202 0.03066 2018 10 10 58401 0.1861 0.3191 0.02926 2018 10 11 58402 0.1851 0.3181 0.02799 2018 10 12 58403 0.1841 0.3171 0.02688 2018 10 13 58404 0.1830 0.3161 0.02596 2018 10 14 58405 0.1820 0.3151 0.02520 2018 10 15 58406 0.1809 0.3141 0.02455 2018 10 16 58407 0.1797 0.3132 0.02397 2018 10 17 58408 0.1786 0.3122 0.02340 2018 10 18 58409 0.1775 0.3113 0.02278 2018 10 19 58410 0.1763 0.3104 0.02209 2018 10 20 58411 0.1751 0.3095 0.02128 2018 10 21 58412 0.1739 0.3086 0.02034 2018 10 22 58413 0.1727 0.3078 0.01928 2018 10 23 58414 0.1714 0.3070 0.01811 2018 10 24 58415 0.1702 0.3061 0.01688 2018 10 25 58416 0.1689 0.3053 0.01564 2018 10 26 58417 0.1676 0.3046 0.01446 2018 10 27 58418 0.1663 0.3038 0.01338 2018 10 28 58419 0.1650 0.3031 0.01243 2018 10 29 58420 0.1636 0.3023 0.01160 2018 10 30 58421 0.1623 0.3016 0.01082 2018 10 31 58422 0.1609 0.3010 0.01002 2018 11 1 58423 0.1595 0.3003 0.00914 2018 11 2 58424 0.1582 0.2997 0.00812 2018 11 3 58425 0.1568 0.2991 0.00694 2018 11 4 58426 0.1553 0.2985 0.00564 2018 11 5 58427 0.1539 0.2979 0.00425 2018 11 6 58428 0.1525 0.2973 0.00288 2018 11 7 58429 0.1510 0.2968 0.00159 2018 11 8 58430 0.1496 0.2963 0.00044 2018 11 9 58431 0.1481 0.2958 -0.00054 2018 11 10 58432 0.1466 0.2953 -0.00136 2018 11 11 58433 0.1451 0.2949 -0.00205 2018 11 12 58434 0.1436 0.2945 -0.00265 2018 11 13 58435 0.1421 0.2941 -0.00323 2018 11 14 58436 0.1406 0.2937 -0.00383 2018 11 15 58437 0.1391 0.2933 -0.00450 2018 11 16 58438 0.1376 0.2930 -0.00526 2018 11 17 58439 0.1360 0.2927 -0.00614 2018 11 18 58440 0.1345 0.2924 -0.00714 2018 11 19 58441 0.1329 0.2921 -0.00829 2018 11 20 58442 0.1314 0.2919 -0.00953 2018 11 21 58443 0.1298 0.2917 -0.01079 2018 11 22 58444 0.1283 0.2915 -0.01202 2018 11 23 58445 0.1267 0.2913 -0.01316 2018 11 24 58446 0.1251 0.2912 -0.01417 2018 11 25 58447 0.1236 0.2911 -0.01505 2018 11 26 58448 0.1220 0.2910 -0.01584 2018 11 27 58449 0.1204 0.2909 -0.01662 2018 11 28 58450 0.1189 0.2909 -0.01745 2018 11 29 58451 0.1173 0.2908 -0.01839 2018 11 30 58452 0.1157 0.2908 -0.01947 2018 12 1 58453 0.1141 0.2909 -0.02066 2018 12 2 58454 0.1126 0.2909 -0.02192 2018 12 3 58455 0.1110 0.2910 -0.02317 2018 12 4 58456 0.1094 0.2911 -0.02435 2018 12 5 58457 0.1079 0.2912 -0.02539 2018 12 6 58458 0.1063 0.2913 -0.02626 2018 12 7 58459 0.1047 0.2915 -0.02697 2018 12 8 58460 0.1032 0.2917 -0.02753 2018 12 9 58461 0.1016 0.2919 -0.02798 2018 12 10 58462 0.1001 0.2921 -0.02836 2018 12 11 58463 0.0985 0.2924 -0.02874 2018 12 12 58464 0.0970 0.2927 -0.02915 2018 12 13 58465 0.0955 0.2930 -0.02965 2018 12 14 58466 0.0939 0.2933 -0.03025 2018 12 15 58467 0.0924 0.2937 -0.03097 2018 12 16 58468 0.0909 0.2941 -0.03179 2018 12 17 58469 0.0894 0.2945 -0.03270 2018 12 18 58470 0.0879 0.2949 -0.03367 2018 12 19 58471 0.0864 0.2953 -0.03465 2018 12 20 58472 0.0849 0.2958 -0.03557 2018 12 21 58473 0.0835 0.2963 -0.03640 2018 12 22 58474 0.0820 0.2968 -0.03710 2018 12 23 58475 0.0806 0.2974 -0.03771 2018 12 24 58476 0.0791 0.2979 -0.03828 2018 12 25 58477 0.0777 0.2985 -0.03890 2018 12 26 58478 0.0763 0.2991 -0.03964 2018 12 27 58479 0.0749 0.2997 -0.04053 2018 12 28 58480 0.0735 0.3004 -0.04155 2018 12 29 58481 0.0721 0.3011 -0.04264 2018 12 30 58482 0.0708 0.3018 -0.04374 2018 12 31 58483 0.0694 0.3025 -0.04477 2019 1 1 58484 0.0681 0.3032 -0.04568 2019 1 2 58485 0.0668 0.3040 -0.04643 2019 1 3 58486 0.0655 0.3047 -0.04703 2019 1 4 58487 0.0642 0.3055 -0.04748 2019 1 5 58488 0.0629 0.3063 -0.04782 2019 1 6 58489 0.0617 0.3072 -0.04811 2019 1 7 58490 0.0604 0.3080 -0.04838 2019 1 8 58491 0.0592 0.3089 -0.04868 2019 1 9 58492 0.0580 0.3098 -0.04906 2019 1 10 58493 0.0568 0.3107 -0.04954 2019 1 11 58494 0.0557 0.3116 -0.05014 2019 1 12 58495 0.0545 0.3126 -0.05085 2019 1 13 58496 0.0534 0.3136 -0.05166 2019 1 14 58497 0.0523 0.3145 -0.05253 2019 1 15 58498 0.0512 0.3155 -0.05343 2019 1 16 58499 0.0502 0.3166 -0.05431 2019 1 17 58500 0.0491 0.3176 -0.05513 2019 1 18 58501 0.0481 0.3187 -0.05585 2019 1 19 58502 0.0471 0.3197 -0.05648 2019 1 20 58503 0.0461 0.3208 -0.05706 2019 1 21 58504 0.0451 0.3219 -0.05767 2019 1 22 58505 0.0442 0.3230 -0.05840 2019 1 23 58506 0.0433 0.3241 -0.05930 2019 1 24 58507 0.0424 0.3253 -0.06037 2019 1 25 58508 0.0415 0.3264 -0.06156 2019 1 26 58509 0.0407 0.3276 -0.06277 2019 1 27 58510 0.0399 0.3288 -0.06391 2019 1 28 58511 0.0391 0.3300 -0.06492 2019 1 29 58512 0.0383 0.3312 -0.06575 2019 1 30 58513 0.0375 0.3324 -0.06638 2019 1 31 58514 0.0368 0.3337 -0.06685 2019 2 1 58515 0.0361 0.3349 -0.06718 2019 2 2 58516 0.0354 0.3362 -0.06742 2019 2 3 58517 0.0348 0.3375 -0.06761 2019 2 4 58518 0.0342 0.3387 -0.06780 2019 2 5 58519 0.0336 0.3400 -0.06802 2019 2 6 58520 0.0330 0.3413 -0.06832 2019 2 7 58521 0.0325 0.3426 -0.06872 2019 2 8 58522 0.0319 0.3440 -0.06923 2019 2 9 58523 0.0314 0.3453 -0.06986 2019 2 10 58524 0.0310 0.3466 -0.07058 2019 2 11 58525 0.0305 0.3480 -0.07139 2019 2 12 58526 0.0301 0.3493 -0.07226 2019 2 13 58527 0.0297 0.3507 -0.07315 2019 2 14 58528 0.0294 0.3520 -0.07404 2019 2 15 58529 0.0291 0.3534 -0.07493 2019 2 16 58530 0.0288 0.3548 -0.07582 2019 2 17 58531 0.0285 0.3562 -0.07680 2019 2 18 58532 0.0282 0.3575 -0.07792 2019 2 19 58533 0.0280 0.3589 -0.07926 2019 2 20 58534 0.0278 0.3603 -0.08083 2019 2 21 58535 0.0277 0.3617 -0.08258 2019 2 22 58536 0.0275 0.3631 -0.08440 2019 2 23 58537 0.0274 0.3645 -0.08616 2019 2 24 58538 0.0273 0.3660 -0.08773 2019 2 25 58539 0.0273 0.3674 -0.08906 2019 2 26 58540 0.0273 0.3688 -0.09012 2019 2 27 58541 0.0273 0.3702 -0.09094 2019 2 28 58542 0.0273 0.3716 -0.09156 2019 3 1 58543 0.0274 0.3730 -0.09205 2019 3 2 58544 0.0274 0.3744 -0.09248 2019 3 3 58545 0.0276 0.3758 -0.09290 2019 3 4 58546 0.0277 0.3772 -0.09338 2019 3 5 58547 0.0279 0.3787 -0.09394 2019 3 6 58548 0.0281 0.3801 -0.09462 2019 3 7 58549 0.0283 0.3815 -0.09540 2019 3 8 58550 0.0286 0.3829 -0.09630 2019 3 9 58551 0.0289 0.3843 -0.09728 2019 3 10 58552 0.0292 0.3857 -0.09827 2019 3 11 58553 0.0295 0.3871 -0.09923 2019 3 12 58554 0.0299 0.3885 -0.10017 2019 3 13 58555 0.0303 0.3898 -0.10110 2019 3 14 58556 0.0307 0.3912 -0.10200 2019 3 15 58557 0.0312 0.3926 -0.10290 2019 3 16 58558 0.0316 0.3940 -0.10385 2019 3 17 58559 0.0322 0.3953 -0.10490 2019 3 18 58560 0.0327 0.3967 -0.10607 2019 3 19 58561 0.0333 0.3980 -0.10748 2019 3 20 58562 0.0338 0.3993 -0.10915 2019 3 21 58563 0.0345 0.4007 -0.11100 2019 3 22 58564 0.0351 0.4020 -0.11287 2019 3 23 58565 0.0358 0.4033 -0.11470 2019 3 24 58566 0.0365 0.4046 -0.11638 2019 3 25 58567 0.0372 0.4059 -0.11784 2019 3 26 58568 0.0379 0.4072 -0.11908 2019 3 27 58569 0.0387 0.4085 -0.12018 2019 3 28 58570 0.0395 0.4097 -0.12117 2019 3 29 58571 0.0403 0.4110 -0.12208 2019 3 30 58572 0.0412 0.4122 -0.12300 2019 3 31 58573 0.0420 0.4134 -0.12404 2019 4 1 58574 0.0429 0.4146 -0.12512 2019 4 2 58575 0.0438 0.4158 -0.12630 2019 4 3 58576 0.0448 0.4170 -0.12763 2019 4 4 58577 0.0457 0.4182 -0.12906 2019 4 5 58578 0.0467 0.4194 -0.13058 2019 4 6 58579 0.0477 0.4205 -0.13221 2019 4 7 58580 0.0488 0.4216 -0.13387 2019 4 8 58581 0.0498 0.4227 -0.13550 2019 4 9 58582 0.0509 0.4238 -0.13706 2019 4 10 58583 0.0520 0.4249 -0.13852 2019 4 11 58584 0.0531 0.4260 -0.13989 2019 4 12 58585 0.0543 0.4270 -0.14117 2019 4 13 58586 0.0554 0.4281 -0.14247 2019 4 14 58587 0.0566 0.4291 -0.14388 2019 4 15 58588 0.0578 0.4301 -0.14542 2019 4 16 58589 0.0591 0.4311 -0.14710 2019 4 17 58590 0.0603 0.4320 -0.14892 2019 4 18 58591 0.0616 0.4330 -0.15084 2019 4 19 58592 0.0628 0.4339 -0.15278 2019 4 20 58593 0.0641 0.4348 -0.15455 2019 4 21 58594 0.0655 0.4357 -0.15612 2019 4 22 58595 0.0668 0.4366 -0.15745 2019 4 23 58596 0.0681 0.4374 -0.15852 2019 4 24 58597 0.0695 0.4382 -0.15935 2019 4 25 58598 0.0709 0.4390 -0.16005 2019 4 26 58599 0.0723 0.4398 -0.16075 2019 4 27 58600 0.0737 0.4406 -0.16150 2019 4 28 58601 0.0751 0.4413 -0.16229 2019 4 29 58602 0.0766 0.4421 -0.16315 2019 4 30 58603 0.0780 0.4428 -0.16410 2019 5 1 58604 0.0795 0.4435 -0.16523 2019 5 2 58605 0.0810 0.4441 -0.16650 2019 5 3 58606 0.0825 0.4447 -0.16780 2019 5 4 58607 0.0840 0.4454 -0.16910 2019 5 5 58608 0.0855 0.4459 -0.17039 2019 5 6 58609 0.0871 0.4465 -0.17160 2019 5 7 58610 0.0886 0.4471 -0.17268 2019 5 8 58611 0.0902 0.4476 -0.17358 2019 5 9 58612 0.0917 0.4481 -0.17435 2019 5 10 58613 0.0933 0.4486 -0.17506 2019 5 11 58614 0.0949 0.4490 -0.17579 2019 5 12 58615 0.0965 0.4494 -0.17663 2019 5 13 58616 0.0981 0.4498 -0.17757 2019 5 14 58617 0.0997 0.4502 -0.17869 2019 5 15 58618 0.1013 0.4506 -0.17994 2019 5 16 58619 0.1029 0.4509 -0.18123 2019 5 17 58620 0.1046 0.4512 -0.18246 2019 5 18 58621 0.1062 0.4515 -0.18350 2019 5 19 58622 0.1079 0.4517 -0.18433 2019 5 20 58623 0.1095 0.4520 -0.18495 2019 5 21 58624 0.1111 0.4522 -0.18537 2019 5 22 58625 0.1128 0.4523 -0.18573 2019 5 23 58626 0.1145 0.4525 -0.18603 2019 5 24 58627 0.1161 0.4526 -0.18632 2019 5 25 58628 0.1178 0.4527 -0.18668 2019 5 26 58629 0.1194 0.4528 -0.18711 2019 5 27 58630 0.1211 0.4529 -0.18764 2019 5 28 58631 0.1228 0.4529 -0.18829 2019 5 29 58632 0.1244 0.4529 -0.18907 2019 5 30 58633 0.1261 0.4529 -0.18985 2019 5 31 58634 0.1278 0.4528 -0.19064 2019 6 1 58635 0.1294 0.4528 -0.19139 2019 6 2 58636 0.1311 0.4527 -0.19201 2019 6 3 58637 0.1327 0.4525 -0.19246 2019 6 4 58638 0.1344 0.4524 -0.19272 2019 6 5 58639 0.1361 0.4522 -0.19281 2019 6 6 58640 0.1377 0.4520 -0.19281 2019 6 7 58641 0.1393 0.4518 -0.19285 2019 6 8 58642 0.1410 0.4515 -0.19293 2019 6 9 58643 0.1426 0.4513 -0.19315 2019 6 10 58644 0.1442 0.4510 -0.19347 2019 6 11 58645 0.1459 0.4506 -0.19392 2019 6 12 58646 0.1475 0.4503 -0.19443 2019 6 13 58647 0.1491 0.4499 -0.19489 2019 6 14 58648 0.1507 0.4495 -0.19519 2019 6 15 58649 0.1523 0.4491 -0.19533 2019 6 16 58650 0.1539 0.4486 -0.19526 2019 6 17 58651 0.1554 0.4482 -0.19499 2019 6 18 58652 0.1570 0.4477 -0.19462 2019 6 19 58653 0.1585 0.4472 -0.19422 2019 6 20 58654 0.1601 0.4466 -0.19393 2019 6 21 58655 0.1616 0.4460 -0.19372 2019 6 22 58656 0.1631 0.4454 -0.19359 2019 6 23 58657 0.1646 0.4448 -0.19348 2019 6 24 58658 0.1661 0.4442 -0.19345 2019 6 25 58659 0.1676 0.4435 -0.19346 2019 6 26 58660 0.1691 0.4428 -0.19359 2019 6 27 58661 0.1705 0.4421 -0.19378 2019 6 28 58662 0.1720 0.4414 -0.19398 2019 6 29 58663 0.1734 0.4406 -0.19416 2019 6 30 58664 0.1748 0.4399 -0.19424 2019 7 1 58665 0.1762 0.4391 -0.19425 2019 7 2 58666 0.1776 0.4383 -0.19418 2019 7 3 58667 0.1789 0.4374 -0.19402 2019 7 4 58668 0.1803 0.4365 -0.19385 2019 7 5 58669 0.1816 0.4357 -0.19371 2019 7 6 58670 0.1829 0.4348 -0.19376 2019 7 7 58671 0.1842 0.4338 -0.19398 2019 7 8 58672 0.1855 0.4329 -0.19433 2019 7 9 58673 0.1867 0.4319 -0.19476 2019 7 10 58674 0.1879 0.4309 -0.19515 2019 7 11 58675 0.1892 0.4299 -0.19545 2019 7 12 58676 0.1903 0.4289 -0.19556 2019 7 13 58677 0.1915 0.4279 -0.19549 2019 7 14 58678 0.1927 0.4268 -0.19525 2019 7 15 58679 0.1938 0.4257 -0.19486 2019 7 16 58680 0.1949 0.4246 -0.19435 2019 7 17 58681 0.1960 0.4235 -0.19380 2019 7 18 58682 0.1970 0.4224 -0.19333 2019 7 19 58683 0.1981 0.4212 -0.19296 2019 7 20 58684 0.1991 0.4201 -0.19267 2019 7 21 58685 0.2001 0.4189 -0.19244 2019 7 22 58686 0.2010 0.4177 -0.19232 2019 7 23 58687 0.2020 0.4165 -0.19225 2019 7 24 58688 0.2029 0.4153 -0.19221 2019 7 25 58689 0.2038 0.4140 -0.19219 2019 7 26 58690 0.2047 0.4128 -0.19217 2019 7 27 58691 0.2055 0.4115 -0.19213 2019 7 28 58692 0.2063 0.4102 -0.19193 2019 7 29 58693 0.2071 0.4089 -0.19169 2019 7 30 58694 0.2079 0.4076 -0.19146 2019 7 31 58695 0.2086 0.4063 -0.19121 2019 8 1 58696 0.2093 0.4050 -0.19105 2019 8 2 58697 0.2100 0.4036 -0.19113 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) 58306 -109.60 0.15 -11.56 0.04 58307 -110.34 0.15 -11.62 0.04 58308 -110.71 0.15 -11.57 0.04 58309 -110.83 0.32 -11.47 0.16 58310 -111.00 0.32 -11.48 0.10 58311 -111.21 0.32 -11.62 0.10 58312 -111.21 0.32 -11.70 0.10 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 58271 -104.9 -12.2 58272 -104.9 -12.3 58273 -104.9 -12.3 58274 -104.8 -12.3 58275 -104.5 -12.3 58276 -104.4 -12.1 58277 -104.7 -12.0 58278 -105.5 -12.0 58279 -106.0 -11.9 58280 -106.3 -11.7 58281 -106.4 -11.6 58282 -106.7 -11.8 58283 -106.9 -12.1 58284 -107.0 -12.2 58285 -106.7 -12.1 58286 -106.4 -11.8 58287 -106.3 -11.7 58288 -106.5 -11.7 58289 -106.8 -11.7 58290 -106.9 -11.9 58291 -106.9 -12.0 58292 -106.9 -12.0 58293 -107.2 -11.9 58294 -107.6 -11.7 58295 -108.1 -11.7 58296 -108.2 -11.8 58297 -108.2 -12.0 58298 -108.1 -12.0 58299 -108.0 -12.0 58300 -108.2 -11.9 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58306 -0.069 0.058 -0.037 0.044 58307 -0.072 0.058 -0.030 0.044 58308 -0.078 0.058 -0.018 0.044 58309 -0.088 0.128 -0.001 0.160 58310 -0.100 0.128 0.020 0.095 58311 -0.114 0.128 0.042 0.095 58312 -0.129 0.128 0.066 0.095 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 58271 -0.29 -0.12 58272 -0.27 -0.12 58273 -0.25 -0.12 58274 -0.22 -0.12 58275 -0.20 -0.14 58276 -0.18 -0.12 58277 -0.16 -0.11 58278 -0.16 -0.12 58279 -0.12 -0.11 58280 -0.15 -0.05 58281 -0.17 -0.04 58282 -0.17 -0.08 58283 -0.17 -0.13 58284 -0.17 -0.18 58285 -0.16 -0.16 58286 -0.14 -0.12 58287 -0.12 -0.07 58288 -0.10 -0.03 58289 -0.11 -0.05 58290 -0.14 -0.08 58291 -0.16 -0.11 58292 -0.17 -0.11 58293 -0.17 -0.09 58294 -0.17 -0.07 58295 -0.18 -0.06 58296 -0.17 -0.05 58297 -0.15 -0.05 58298 -0.14 -0.04 58299 -0.12 -0.04 58300 -0.11 -0.04 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).