********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 10 June 2021 Vol. XXXIV No. 023 ______________________________________________________________________ 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 02 May 2019 at 0000 UTC Beginning 1 January 2017: TAI-UTC = 37.000 000 seconds *********************************************************************** * * * There will NOT be a leap second introduced * * in UTC at the end of June 2021 * * * * The US Naval Observatory's Rapid Service/Prediction Center website * * (maia.usno.navy.mil) must undergo modernization and has been * * offline since 24 October 2019. The expected completion of work and * * return of service will be no earlier than Summer of 2021. * * * * Although the Bulletin A makes several references to maia, the * * paragraph above supersedes any information contained in the * * Bulletin A text. * * * * Updated EOPs are available at NASA's Archive of Space Geodesy Data: * * https://cddis.nasa.gov/archive/products/iers * * ftps://gdc.cddis.eosdis.nasa.gov/products/iers * * Daily EOP data may be available here by 18:00 UTC, and Bulletin A * * EOP data may be available by 20:00 UTC. * * For additional information on accessing CDDIS, please refer to: * * https://cddis.nasa.gov/About/CDDIS_File_Download_FAQ.html * * * * Updated EOPs may also be available at IERS: * * https://datacenter.iers.org/eop.php * * EOP data files are uploaded directly from USNO to this site each * * day. For further information, contact the IERS directly. * * * * Users should verify results obtained from these sites; we cannot * * guarantee the integrity or timeliness of files provided at * * third-party sites. * * * * Questions and enquiries about EOPs can be emailed to the * * following address: * * usn.ncr.navobsydc.mbx.eopcp@mail.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 21 6 4 59369 0.16533 .00009 0.44103 .00009 -0.183698 0.000013 21 6 5 59370 0.16644 .00009 0.43995 .00009 -0.183739 0.000015 21 6 6 59371 0.16745 .00009 0.43879 .00009 -0.183667 0.000015 21 6 7 59372 0.16856 .00009 0.43781 .00009 -0.183471 0.000015 21 6 8 59373 0.17001 .00009 0.43707 .00009 -0.183122 0.000015 21 6 9 59374 0.17160 .00009 0.43652 .00009 -0.182576 0.000014 21 6 10 59375 0.17305 .00009 0.43611 .00009 -0.181897 0.000014 IERS Final Values MJD x y UT1-UTC " " s 21 4 2 59306 0.0823 0.4125 -0.17449 21 4 3 59307 0.0829 0.4134 -0.17456 21 4 4 59308 0.0837 0.4140 -0.17447 21 4 5 59309 0.0849 0.4145 -0.17440 21 4 6 59310 0.0859 0.4156 -0.17443 21 4 7 59311 0.0866 0.4168 -0.17460 21 4 8 59312 0.0874 0.4178 -0.17489 21 4 9 59313 0.0876 0.4188 -0.17529 21 4 10 59314 0.0875 0.4199 -0.17577 21 4 11 59315 0.0871 0.4208 -0.17629 21 4 12 59316 0.0868 0.4214 -0.17680 21 4 13 59317 0.0868 0.4219 -0.17725 21 4 14 59318 0.0877 0.4224 -0.17761 21 4 15 59319 0.0888 0.4233 -0.17786 21 4 16 59320 0.0900 0.4238 -0.17799 21 4 17 59321 0.0922 0.4243 -0.17802 21 4 18 59322 0.0942 0.4253 -0.17799 21 4 19 59323 0.0959 0.4262 -0.17791 21 4 20 59324 0.0973 0.4276 -0.17786 21 4 21 59325 0.0982 0.4289 -0.17792 21 4 22 59326 0.0990 0.4301 -0.17813 21 4 23 59327 0.0996 0.4311 -0.17854 21 4 24 59328 0.0998 0.4320 -0.17914 21 4 25 59329 0.1000 0.4328 -0.17994 21 4 26 59330 0.1004 0.4334 -0.18091 21 4 27 59331 0.1013 0.4339 -0.18190 21 4 28 59332 0.1027 0.4344 -0.18270 21 4 29 59333 0.1040 0.4349 -0.18320 21 4 30 59334 0.1054 0.4352 -0.18338 21 5 1 59335 0.1068 0.4358 -0.18331 _______________________________________________________________________ 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 = 0.1318 + 0.0383 cos A + 0.1131 sin A + 0.0082 cos C - 0.0374 sin C y = 0.3644 + 0.1074 cos A - 0.0307 sin A - 0.0374 cos C - 0.0082 sin C UT1-UTC = -0.1577 + 0.00025 (MJD - 59383) - (UT2-UT1) where A = 2*pi*(MJD-59375)/365.25 and C = 2*pi*(MJD-59375)/435. TAI-UTC(MJD 59376) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59375)**0.80 S t = 0.00025 (MJD-59375)**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) 2021 6 11 59376 0.1744 0.4357 -0.18106 2021 6 12 59377 0.1757 0.4353 -0.18013 2021 6 13 59378 0.1770 0.4348 -0.17918 2021 6 14 59379 0.1783 0.4342 -0.17827 2021 6 15 59380 0.1796 0.4336 -0.17747 2021 6 16 59381 0.1810 0.4330 -0.17685 2021 6 17 59382 0.1825 0.4324 -0.17645 2021 6 18 59383 0.1839 0.4318 -0.17627 2021 6 19 59384 0.1853 0.4312 -0.17625 2021 6 20 59385 0.1867 0.4306 -0.17630 2021 6 21 59386 0.1880 0.4299 -0.17631 2021 6 22 59387 0.1894 0.4292 -0.17614 2021 6 23 59388 0.1907 0.4284 -0.17572 2021 6 24 59389 0.1921 0.4277 -0.17504 2021 6 25 59390 0.1935 0.4269 -0.17418 2021 6 26 59391 0.1948 0.4261 -0.17326 2021 6 27 59392 0.1962 0.4253 -0.17238 2021 6 28 59393 0.1975 0.4244 -0.17161 2021 6 29 59394 0.1988 0.4236 -0.17100 2021 6 30 59395 0.2001 0.4227 -0.17053 2021 7 1 59396 0.2014 0.4218 -0.17013 2021 7 2 59397 0.2027 0.4208 -0.16975 2021 7 3 59398 0.2040 0.4199 -0.16933 2021 7 4 59399 0.2052 0.4189 -0.16883 2021 7 5 59400 0.2064 0.4179 -0.16820 2021 7 6 59401 0.2077 0.4169 -0.16741 2021 7 7 59402 0.2089 0.4158 -0.16645 2021 7 8 59403 0.2100 0.4148 -0.16532 2021 7 9 59404 0.2112 0.4137 -0.16408 2021 7 10 59405 0.2123 0.4126 -0.16277 2021 7 11 59406 0.2135 0.4114 -0.16148 2021 7 12 59407 0.2146 0.4103 -0.16028 2021 7 13 59408 0.2157 0.4091 -0.15924 2021 7 14 59409 0.2167 0.4079 -0.15842 2021 7 15 59410 0.2178 0.4067 -0.15780 2021 7 16 59411 0.2188 0.4055 -0.15734 2021 7 17 59412 0.2198 0.4042 -0.15697 2021 7 18 59413 0.2208 0.4030 -0.15659 2021 7 19 59414 0.2217 0.4017 -0.15609 2021 7 20 59415 0.2226 0.4004 -0.15538 2021 7 21 59416 0.2236 0.3991 -0.15444 2021 7 22 59417 0.2244 0.3978 -0.15330 2021 7 23 59418 0.2253 0.3964 -0.15205 2021 7 24 59419 0.2261 0.3950 -0.15082 2021 7 25 59420 0.2269 0.3937 -0.14971 2021 7 26 59421 0.2277 0.3923 -0.14876 2021 7 27 59422 0.2285 0.3909 -0.14796 2021 7 28 59423 0.2292 0.3895 -0.14726 2021 7 29 59424 0.2299 0.3880 -0.14660 2021 7 30 59425 0.2306 0.3866 -0.14591 2021 7 31 59426 0.2313 0.3851 -0.14513 2021 8 1 59427 0.2319 0.3836 -0.14421 2021 8 2 59428 0.2325 0.3822 -0.14314 2021 8 3 59429 0.2331 0.3807 -0.14191 2021 8 4 59430 0.2336 0.3791 -0.14053 2021 8 5 59431 0.2342 0.3776 -0.13905 2021 8 6 59432 0.2347 0.3761 -0.13752 2021 8 7 59433 0.2351 0.3746 -0.13603 2021 8 8 59434 0.2356 0.3730 -0.13464 2021 8 9 59435 0.2360 0.3715 -0.13343 2021 8 10 59436 0.2363 0.3699 -0.13246 2021 8 11 59437 0.2367 0.3683 -0.13173 2021 8 12 59438 0.2370 0.3667 -0.13118 2021 8 13 59439 0.2373 0.3652 -0.13075 2021 8 14 59440 0.2376 0.3636 -0.13031 2021 8 15 59441 0.2378 0.3620 -0.12976 2021 8 16 59442 0.2380 0.3604 -0.12902 2021 8 17 59443 0.2382 0.3587 -0.12807 2021 8 18 59444 0.2384 0.3571 -0.12695 2021 8 19 59445 0.2385 0.3555 -0.12573 2021 8 20 59446 0.2386 0.3539 -0.12452 2021 8 21 59447 0.2386 0.3523 -0.12343 2021 8 22 59448 0.2386 0.3506 -0.12253 2021 8 23 59449 0.2386 0.3490 -0.12183 2021 8 24 59450 0.2386 0.3474 -0.12131 2021 8 25 59451 0.2385 0.3457 -0.12089 2021 8 26 59452 0.2385 0.3441 -0.12049 2021 8 27 59453 0.2383 0.3424 -0.12005 2021 8 28 59454 0.2382 0.3408 -0.11950 2021 8 29 59455 0.2380 0.3392 -0.11882 2021 8 30 59456 0.2378 0.3375 -0.11798 2021 8 31 59457 0.2375 0.3359 -0.11701 2021 9 1 59458 0.2373 0.3343 -0.11593 2021 9 2 59459 0.2370 0.3326 -0.11480 2021 9 3 59460 0.2366 0.3310 -0.11368 2021 9 4 59461 0.2363 0.3294 -0.11266 2021 9 5 59462 0.2359 0.3277 -0.11182 2021 9 6 59463 0.2354 0.3261 -0.11122 2021 9 7 59464 0.2350 0.3245 -0.11089 2021 9 8 59465 0.2345 0.3229 -0.11080 2021 9 9 59466 0.2340 0.3213 -0.11086 2021 9 10 59467 0.2334 0.3197 -0.11097 2021 9 11 59468 0.2329 0.3181 -0.11099 2021 9 12 59469 0.2323 0.3165 -0.11082 2021 9 13 59470 0.2316 0.3150 -0.11042 2021 9 14 59471 0.2310 0.3134 -0.10982 2021 9 15 59472 0.2303 0.3118 -0.10910 2021 9 16 59473 0.2295 0.3103 -0.10835 2021 9 17 59474 0.2288 0.3088 -0.10768 2021 9 18 59475 0.2280 0.3072 -0.10718 2021 9 19 59476 0.2272 0.3057 -0.10687 2021 9 20 59477 0.2264 0.3042 -0.10675 2021 9 21 59478 0.2255 0.3027 -0.10676 2021 9 22 59479 0.2246 0.3012 -0.10683 2021 9 23 59480 0.2237 0.2997 -0.10689 2021 9 24 59481 0.2228 0.2983 -0.10686 2021 9 25 59482 0.2218 0.2968 -0.10671 2021 9 26 59483 0.2208 0.2954 -0.10640 2021 9 27 59484 0.2198 0.2940 -0.10599 2021 9 28 59485 0.2187 0.2926 -0.10547 2021 9 29 59486 0.2176 0.2912 -0.10486 2021 9 30 59487 0.2165 0.2898 -0.10425 2021 10 1 59488 0.2154 0.2884 -0.10371 2021 10 2 59489 0.2142 0.2871 -0.10330 2021 10 3 59490 0.2130 0.2858 -0.10311 2021 10 4 59491 0.2118 0.2845 -0.10319 2021 10 5 59492 0.2106 0.2832 -0.10353 2021 10 6 59493 0.2093 0.2819 -0.10409 2021 10 7 59494 0.2081 0.2806 -0.10475 2021 10 8 59495 0.2068 0.2794 -0.10536 2021 10 9 59496 0.2054 0.2782 -0.10580 2021 10 10 59497 0.2041 0.2770 -0.10598 2021 10 11 59498 0.2027 0.2758 -0.10591 2021 10 12 59499 0.2013 0.2746 -0.10566 2021 10 13 59500 0.1999 0.2735 -0.10534 2021 10 14 59501 0.1985 0.2724 -0.10505 2021 10 15 59502 0.1970 0.2713 -0.10490 2021 10 16 59503 0.1955 0.2702 -0.10491 2021 10 17 59504 0.1940 0.2692 -0.10511 2021 10 18 59505 0.1925 0.2681 -0.10544 2021 10 19 59506 0.1909 0.2671 -0.10584 2021 10 20 59507 0.1894 0.2661 -0.10623 2021 10 21 59508 0.1878 0.2652 -0.10655 2021 10 22 59509 0.1862 0.2642 -0.10675 2021 10 23 59510 0.1846 0.2633 -0.10678 2021 10 24 59511 0.1830 0.2624 -0.10664 2021 10 25 59512 0.1813 0.2615 -0.10635 2021 10 26 59513 0.1796 0.2607 -0.10596 2021 10 27 59514 0.1779 0.2599 -0.10551 2021 10 28 59515 0.1762 0.2591 -0.10509 2021 10 29 59516 0.1745 0.2583 -0.10477 2021 10 30 59517 0.1728 0.2576 -0.10461 2021 10 31 59518 0.1711 0.2569 -0.10468 2021 11 1 59519 0.1693 0.2562 -0.10501 2021 11 2 59520 0.1675 0.2555 -0.10559 2021 11 3 59521 0.1657 0.2549 -0.10632 2021 11 4 59522 0.1639 0.2543 -0.10709 2021 11 5 59523 0.1621 0.2537 -0.10774 2021 11 6 59524 0.1603 0.2531 -0.10815 2021 11 7 59525 0.1585 0.2526 -0.10828 2021 11 8 59526 0.1566 0.2521 -0.10817 2021 11 9 59527 0.1548 0.2516 -0.10793 2021 11 10 59528 0.1529 0.2512 -0.10768 2021 11 11 59529 0.1511 0.2508 -0.10752 2021 11 12 59530 0.1492 0.2504 -0.10752 2021 11 13 59531 0.1473 0.2500 -0.10768 2021 11 14 59532 0.1454 0.2497 -0.10796 2021 11 15 59533 0.1435 0.2494 -0.10832 2021 11 16 59534 0.1416 0.2491 -0.10867 2021 11 17 59535 0.1397 0.2489 -0.10895 2021 11 18 59536 0.1378 0.2487 -0.10911 2021 11 19 59537 0.1358 0.2485 -0.10911 2021 11 20 59538 0.1339 0.2483 -0.10894 2021 11 21 59539 0.1320 0.2482 -0.10859 2021 11 22 59540 0.1300 0.2481 -0.10811 2021 11 23 59541 0.1281 0.2480 -0.10755 2021 11 24 59542 0.1262 0.2480 -0.10698 2021 11 25 59543 0.1242 0.2480 -0.10648 2021 11 26 59544 0.1223 0.2480 -0.10609 2021 11 27 59545 0.1203 0.2481 -0.10590 2021 11 28 59546 0.1184 0.2482 -0.10592 2021 11 29 59547 0.1164 0.2483 -0.10618 2021 11 30 59548 0.1145 0.2484 -0.10662 2021 12 1 59549 0.1126 0.2486 -0.10715 2021 12 2 59550 0.1106 0.2488 -0.10764 2021 12 3 59551 0.1087 0.2490 -0.10796 2021 12 4 59552 0.1068 0.2493 -0.10801 2021 12 5 59553 0.1048 0.2496 -0.10780 2021 12 6 59554 0.1029 0.2499 -0.10740 2021 12 7 59555 0.1010 0.2503 -0.10695 2021 12 8 59556 0.0991 0.2506 -0.10655 2021 12 9 59557 0.0972 0.2510 -0.10630 2021 12 10 59558 0.0953 0.2515 -0.10622 2021 12 11 59559 0.0934 0.2520 -0.10627 2021 12 12 59560 0.0915 0.2525 -0.10639 2021 12 13 59561 0.0896 0.2530 -0.10651 2021 12 14 59562 0.0877 0.2535 -0.10657 2021 12 15 59563 0.0859 0.2541 -0.10651 2021 12 16 59564 0.0840 0.2548 -0.10630 2021 12 17 59565 0.0822 0.2554 -0.10591 2021 12 18 59566 0.0804 0.2561 -0.10535 2021 12 19 59567 0.0785 0.2568 -0.10465 2021 12 20 59568 0.0767 0.2575 -0.10385 2021 12 21 59569 0.0749 0.2583 -0.10302 2021 12 22 59570 0.0732 0.2591 -0.10224 2021 12 23 59571 0.0714 0.2599 -0.10158 2021 12 24 59572 0.0696 0.2607 -0.10111 2021 12 25 59573 0.0679 0.2616 -0.10087 2021 12 26 59574 0.0662 0.2625 -0.10086 2021 12 27 59575 0.0645 0.2634 -0.10106 2021 12 28 59576 0.0628 0.2644 -0.10139 2021 12 29 59577 0.0611 0.2653 -0.10175 2021 12 30 59578 0.0594 0.2663 -0.10201 2021 12 31 59579 0.0578 0.2674 -0.10208 2022 1 1 59580 0.0562 0.2684 -0.10193 2022 1 2 59581 0.0546 0.2695 -0.10158 2022 1 3 59582 0.0530 0.2706 -0.10114 2022 1 4 59583 0.0514 0.2718 -0.10074 2022 1 5 59584 0.0499 0.2729 -0.10048 2022 1 6 59585 0.0483 0.2741 -0.10039 2022 1 7 59586 0.0468 0.2753 -0.10047 2022 1 8 59587 0.0453 0.2765 -0.10064 2022 1 9 59588 0.0439 0.2778 -0.10084 2022 1 10 59589 0.0424 0.2791 -0.10098 2022 1 11 59590 0.0410 0.2804 -0.10101 2022 1 12 59591 0.0396 0.2817 -0.10085 2022 1 13 59592 0.0382 0.2830 -0.10050 2022 1 14 59593 0.0369 0.2844 -0.09993 2022 1 15 59594 0.0355 0.2858 -0.09923 2022 1 16 59595 0.0342 0.2872 -0.09845 2022 1 17 59596 0.0329 0.2886 -0.09767 2022 1 18 59597 0.0317 0.2901 -0.09694 2022 1 19 59598 0.0305 0.2915 -0.09631 2022 1 20 59599 0.0293 0.2930 -0.09588 2022 1 21 59600 0.0281 0.2945 -0.09564 2022 1 22 59601 0.0269 0.2961 -0.09565 2022 1 23 59602 0.0258 0.2976 -0.09583 2022 1 24 59603 0.0247 0.2992 -0.09617 2022 1 25 59604 0.0236 0.3008 -0.09659 2022 1 26 59605 0.0226 0.3024 -0.09688 2022 1 27 59606 0.0216 0.3040 -0.09693 2022 1 28 59607 0.0206 0.3056 -0.09677 2022 1 29 59608 0.0196 0.3073 -0.09645 2022 1 30 59609 0.0187 0.3089 -0.09608 2022 1 31 59610 0.0178 0.3106 -0.09573 2022 2 1 59611 0.0169 0.3123 -0.09549 2022 2 2 59612 0.0161 0.3140 -0.09544 2022 2 3 59613 0.0153 0.3157 -0.09558 2022 2 4 59614 0.0145 0.3175 -0.09584 2022 2 5 59615 0.0138 0.3192 -0.09617 2022 2 6 59616 0.0130 0.3210 -0.09653 2022 2 7 59617 0.0124 0.3228 -0.09685 2022 2 8 59618 0.0117 0.3245 -0.09704 2022 2 9 59619 0.0111 0.3263 -0.09709 2022 2 10 59620 0.0105 0.3282 -0.09703 2022 2 11 59621 0.0099 0.3300 -0.09687 2022 2 12 59622 0.0094 0.3318 -0.09658 2022 2 13 59623 0.0089 0.3336 -0.09616 2022 2 14 59624 0.0084 0.3355 -0.09569 2022 2 15 59625 0.0080 0.3373 -0.09527 2022 2 16 59626 0.0076 0.3392 -0.09500 2022 2 17 59627 0.0072 0.3411 -0.09495 2022 2 18 59628 0.0069 0.3429 -0.09504 2022 2 19 59629 0.0066 0.3448 -0.09529 2022 2 20 59630 0.0063 0.3467 -0.09561 2022 2 21 59631 0.0061 0.3486 -0.09600 2022 2 22 59632 0.0059 0.3505 -0.09628 2022 2 23 59633 0.0057 0.3524 -0.09637 2022 2 24 59634 0.0056 0.3543 -0.09630 2022 2 25 59635 0.0055 0.3562 -0.09600 2022 2 26 59636 0.0054 0.3581 -0.09551 2022 2 27 59637 0.0054 0.3600 -0.09504 2022 2 28 59638 0.0054 0.3619 -0.09469 2022 3 1 59639 0.0054 0.3638 -0.09453 2022 3 2 59640 0.0055 0.3657 -0.09460 2022 3 3 59641 0.0056 0.3676 -0.09483 2022 3 4 59642 0.0057 0.3695 -0.09513 2022 3 5 59643 0.0059 0.3714 -0.09542 2022 3 6 59644 0.0061 0.3734 -0.09569 2022 3 7 59645 0.0064 0.3753 -0.09583 2022 3 8 59646 0.0066 0.3772 -0.09583 2022 3 9 59647 0.0069 0.3791 -0.09566 2022 3 10 59648 0.0073 0.3810 -0.09546 2022 3 11 59649 0.0076 0.3828 -0.09528 2022 3 12 59650 0.0080 0.3847 -0.09501 2022 3 13 59651 0.0085 0.3866 -0.09473 2022 3 14 59652 0.0089 0.3885 -0.09449 2022 3 15 59653 0.0094 0.3904 -0.09437 2022 3 16 59654 0.0100 0.3922 -0.09442 2022 3 17 59655 0.0105 0.3941 -0.09470 2022 3 18 59656 0.0111 0.3959 -0.09521 2022 3 19 59657 0.0118 0.3978 -0.09589 2022 3 20 59658 0.0124 0.3996 -0.09669 2022 3 21 59659 0.0131 0.4014 -0.09746 2022 3 22 59660 0.0139 0.4032 -0.09811 2022 3 23 59661 0.0146 0.4050 -0.09850 2022 3 24 59662 0.0154 0.4068 -0.09860 2022 3 25 59663 0.0163 0.4086 -0.09853 2022 3 26 59664 0.0171 0.4103 -0.09836 2022 3 27 59665 0.0180 0.4121 -0.09814 2022 3 28 59666 0.0189 0.4138 -0.09806 2022 3 29 59667 0.0199 0.4155 -0.09817 2022 3 30 59668 0.0208 0.4173 -0.09849 2022 3 31 59669 0.0218 0.4190 -0.09891 2022 4 1 59670 0.0229 0.4206 -0.09942 2022 4 2 59671 0.0239 0.4223 -0.09988 2022 4 3 59672 0.0250 0.4240 -0.10019 2022 4 4 59673 0.0262 0.4256 -0.10031 2022 4 5 59674 0.0273 0.4272 -0.10025 2022 4 6 59675 0.0285 0.4288 -0.09994 2022 4 7 59676 0.0297 0.4304 -0.09948 2022 4 8 59677 0.0310 0.4320 -0.09898 2022 4 9 59678 0.0322 0.4335 -0.09854 2022 4 10 59679 0.0335 0.4350 -0.09818 2022 4 11 59680 0.0348 0.4365 -0.09800 2022 4 12 59681 0.0362 0.4380 -0.09805 2022 4 13 59682 0.0375 0.4395 -0.09831 2022 4 14 59683 0.0389 0.4409 -0.09881 2022 4 15 59684 0.0404 0.4424 -0.09949 2022 4 16 59685 0.0418 0.4438 -0.10025 2022 4 17 59686 0.0433 0.4452 -0.10095 2022 4 18 59687 0.0448 0.4465 -0.10160 2022 4 19 59688 0.0463 0.4479 -0.10205 2022 4 20 59689 0.0478 0.4492 -0.10221 2022 4 21 59690 0.0494 0.4505 -0.10219 2022 4 22 59691 0.0510 0.4517 -0.10215 2022 4 23 59692 0.0526 0.4530 -0.10216 2022 4 24 59693 0.0542 0.4542 -0.10228 2022 4 25 59694 0.0559 0.4554 -0.10263 2022 4 26 59695 0.0576 0.4566 -0.10322 2022 4 27 59696 0.0593 0.4577 -0.10403 2022 4 28 59697 0.0610 0.4588 -0.10497 2022 4 29 59698 0.0627 0.4599 -0.10588 2022 4 30 59699 0.0645 0.4610 -0.10669 2022 5 1 59700 0.0662 0.4620 -0.10733 2022 5 2 59701 0.0680 0.4630 -0.10772 2022 5 3 59702 0.0698 0.4640 -0.10792 2022 5 4 59703 0.0716 0.4650 -0.10789 2022 5 5 59704 0.0735 0.4659 -0.10766 2022 5 6 59705 0.0753 0.4668 -0.10731 2022 5 7 59706 0.0772 0.4677 -0.10686 2022 5 8 59707 0.0791 0.4686 -0.10641 2022 5 9 59708 0.0810 0.4694 -0.10603 2022 5 10 59709 0.0829 0.4702 -0.10577 2022 5 11 59710 0.0848 0.4709 -0.10573 2022 5 12 59711 0.0868 0.4716 -0.10593 2022 5 13 59712 0.0887 0.4723 -0.10630 2022 5 14 59713 0.0907 0.4730 -0.10674 2022 5 15 59714 0.0926 0.4737 -0.10712 2022 5 16 59715 0.0946 0.4743 -0.10731 2022 5 17 59716 0.0966 0.4749 -0.10719 2022 5 18 59717 0.0986 0.4754 -0.10675 2022 5 19 59718 0.1006 0.4759 -0.10616 2022 5 20 59719 0.1027 0.4764 -0.10550 2022 5 21 59720 0.1047 0.4769 -0.10487 2022 5 22 59721 0.1067 0.4773 -0.10435 2022 5 23 59722 0.1088 0.4777 -0.10397 2022 5 24 59723 0.1108 0.4780 -0.10373 2022 5 25 59724 0.1129 0.4784 -0.10356 2022 5 26 59725 0.1149 0.4787 -0.10344 2022 5 27 59726 0.1170 0.4790 -0.10331 2022 5 28 59727 0.1191 0.4792 -0.10303 2022 5 29 59728 0.1211 0.4794 -0.10259 2022 5 30 59729 0.1232 0.4796 -0.10197 2022 5 31 59730 0.1253 0.4797 -0.10115 2022 6 1 59731 0.1274 0.4798 -0.10015 2022 6 2 59732 0.1295 0.4799 -0.09905 2022 6 3 59733 0.1315 0.4799 -0.09796 2022 6 4 59734 0.1336 0.4800 -0.09693 2022 6 5 59735 0.1357 0.4799 -0.09600 2022 6 6 59736 0.1378 0.4799 -0.09525 2022 6 7 59737 0.1399 0.4798 -0.09476 2022 6 8 59738 0.1419 0.4797 -0.09446 2022 6 9 59739 0.1440 0.4795 -0.09429 2022 6 10 59740 0.1461 0.4794 -0.09422 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) 59354 -105.59 0.64 -10.25 0.17 59355 -105.61 0.64 -10.38 0.17 59356 -105.79 0.64 -10.49 0.17 59357 -106.06 0.72 -10.34 0.23 59358 -106.59 0.71 -9.96 0.22 59359 -107.42 0.37 -9.66 0.14 59360 -108.19 0.37 -9.63 0.14 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 59306 -106.5 -9.1 59307 -106.4 -9.1 59308 -106.3 -9.0 59309 -106.3 -9.0 59310 -106.3 -9.0 59311 -106.2 -9.1 59312 -105.9 -9.2 59313 -105.6 -9.2 59314 -105.6 -9.0 59315 -105.8 -8.7 59316 -105.8 -8.6 59317 -105.8 -8.6 59318 -105.8 -8.9 59319 -105.7 -9.1 59320 -105.7 -9.3 59321 -105.8 -9.5 59322 -106.0 -9.7 59323 -106.0 -9.9 59324 -105.8 -9.9 59325 -105.3 -9.9 59326 -105.0 -10.0 59327 -105.0 -10.2 59328 -105.0 -10.4 59329 -104.9 -10.3 59330 -105.1 -9.9 59331 -105.7 -9.7 59332 -106.4 -9.7 59333 -106.5 -9.7 59334 -106.1 -9.7 59335 -105.6 -9.8 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59354 0.240 0.255 -0.156 0.170 59355 0.254 0.255 -0.187 0.170 59356 0.258 0.255 -0.207 0.170 59357 0.251 0.287 -0.216 0.233 59358 0.235 0.282 -0.215 0.225 59359 0.214 0.149 -0.207 0.136 59360 0.189 0.149 -0.196 0.136 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 59306 0.37 -0.02 59307 0.33 0.02 59308 0.29 0.05 59309 0.25 0.09 59310 0.20 0.12 59311 0.16 0.15 59312 0.19 0.10 59313 0.24 0.02 59314 0.26 0.01 59315 0.28 0.01 59316 0.30 0.02 59317 0.32 0.03 59318 0.30 0.02 59319 0.27 0.01 59320 0.25 -0.01 59321 0.21 -0.02 59322 0.18 -0.03 59323 0.14 -0.04 59324 0.11 -0.05 59325 0.14 -0.06 59326 0.18 -0.07 59327 0.22 -0.09 59328 0.23 -0.12 59329 0.22 -0.17 59330 0.22 -0.22 59331 0.21 -0.27 59332 0.25 -0.17 59333 0.29 -0.05 59334 0.34 0.07 59335 0.32 0.08 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).