********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 13 May 2021 Vol. XXXIV No. 019 ______________________________________________________________________ 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 5 7 59341 0.11710 .00009 0.44149 .00009 -0.182562 0.000018 21 5 8 59342 0.11875 .00009 0.44258 .00009 -0.182818 0.000020 21 5 9 59343 0.12041 .00009 0.44346 .00009 -0.183059 0.000017 21 5 10 59344 0.12194 .00009 0.44425 .00009 -0.183233 0.000011 21 5 11 59345 0.12326 .00009 0.44487 .00009 -0.183362 0.000011 21 5 12 59346 0.12467 .00009 0.44507 .00009 -0.183439 0.000011 21 5 13 59347 0.12635 .00009 0.44496 .00009 -0.183371 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 = 0.1281 - 0.0102 cos A + 0.1126 sin A + 0.0111 cos C - 0.0318 sin C y = 0.3697 + 0.1044 cos A + 0.0118 sin A - 0.0318 cos C - 0.0111 sin C UT1-UTC = -0.1501 + 0.00026 (MJD - 59355) - (UT2-UT1) where A = 2*pi*(MJD-59347)/365.25 and C = 2*pi*(MJD-59347)/435. TAI-UTC(MJD 59348) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59347)**0.80 S t = 0.00025 (MJD-59347)**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 5 14 59348 0.1282 0.4448 -0.18318 2021 5 15 59349 0.1301 0.4448 -0.18289 2021 5 16 59350 0.1320 0.4448 -0.18257 2021 5 17 59351 0.1339 0.4450 -0.18228 2021 5 18 59352 0.1356 0.4451 -0.18208 2021 5 19 59353 0.1373 0.4452 -0.18206 2021 5 20 59354 0.1389 0.4453 -0.18225 2021 5 21 59355 0.1406 0.4453 -0.18268 2021 5 22 59356 0.1422 0.4452 -0.18334 2021 5 23 59357 0.1438 0.4451 -0.18414 2021 5 24 59358 0.1454 0.4450 -0.18494 2021 5 25 59359 0.1470 0.4449 -0.18556 2021 5 26 59360 0.1486 0.4447 -0.18590 2021 5 27 59361 0.1501 0.4445 -0.18588 2021 5 28 59362 0.1517 0.4442 -0.18554 2021 5 29 59363 0.1533 0.4439 -0.18499 2021 5 30 59364 0.1549 0.4436 -0.18436 2021 5 31 59365 0.1565 0.4433 -0.18375 2021 6 1 59366 0.1581 0.4430 -0.18325 2021 6 2 59367 0.1598 0.4427 -0.18288 2021 6 3 59368 0.1614 0.4425 -0.18260 2021 6 4 59369 0.1629 0.4421 -0.18237 2021 6 5 59370 0.1645 0.4418 -0.18214 2021 6 6 59371 0.1661 0.4414 -0.18186 2021 6 7 59372 0.1676 0.4410 -0.18147 2021 6 8 59373 0.1692 0.4405 -0.18095 2021 6 9 59374 0.1708 0.4400 -0.18024 2021 6 10 59375 0.1723 0.4395 -0.17937 2021 6 11 59376 0.1739 0.4390 -0.17834 2021 6 12 59377 0.1755 0.4385 -0.17721 2021 6 13 59378 0.1770 0.4379 -0.17604 2021 6 14 59379 0.1786 0.4373 -0.17491 2021 6 15 59380 0.1801 0.4367 -0.17389 2021 6 16 59381 0.1816 0.4360 -0.17302 2021 6 17 59382 0.1832 0.4354 -0.17234 2021 6 18 59383 0.1847 0.4347 -0.17185 2021 6 19 59384 0.1862 0.4340 -0.17151 2021 6 20 59385 0.1877 0.4332 -0.17124 2021 6 21 59386 0.1892 0.4325 -0.17091 2021 6 22 59387 0.1906 0.4317 -0.17039 2021 6 23 59388 0.1921 0.4308 -0.16961 2021 6 24 59389 0.1935 0.4300 -0.16856 2021 6 25 59390 0.1949 0.4291 -0.16731 2021 6 26 59391 0.1964 0.4282 -0.16599 2021 6 27 59392 0.1978 0.4273 -0.16470 2021 6 28 59393 0.1991 0.4264 -0.16352 2021 6 29 59394 0.2005 0.4254 -0.16250 2021 6 30 59395 0.2019 0.4244 -0.16159 2021 7 1 59396 0.2032 0.4234 -0.16075 2021 7 2 59397 0.2045 0.4224 -0.15992 2021 7 3 59398 0.2058 0.4213 -0.15903 2021 7 4 59399 0.2071 0.4203 -0.15804 2021 7 5 59400 0.2083 0.4192 -0.15691 2021 7 6 59401 0.2096 0.4180 -0.15563 2021 7 7 59402 0.2108 0.4169 -0.15420 2021 7 8 59403 0.2120 0.4158 -0.15264 2021 7 9 59404 0.2132 0.4146 -0.15101 2021 7 10 59405 0.2144 0.4134 -0.14935 2021 7 11 59406 0.2155 0.4122 -0.14775 2021 7 12 59407 0.2166 0.4109 -0.14627 2021 7 13 59408 0.2177 0.4097 -0.14498 2021 7 14 59409 0.2188 0.4084 -0.14391 2021 7 15 59410 0.2199 0.4071 -0.14306 2021 7 16 59411 0.2209 0.4058 -0.14238 2021 7 17 59412 0.2219 0.4045 -0.14179 2021 7 18 59413 0.2229 0.4032 -0.14119 2021 7 19 59414 0.2239 0.4018 -0.14046 2021 7 20 59415 0.2248 0.4005 -0.13953 2021 7 21 59416 0.2258 0.3991 -0.13837 2021 7 22 59417 0.2267 0.3977 -0.13701 2021 7 23 59418 0.2275 0.3962 -0.13556 2021 7 24 59419 0.2284 0.3948 -0.13412 2021 7 25 59420 0.2292 0.3934 -0.13281 2021 7 26 59421 0.2300 0.3919 -0.13167 2021 7 27 59422 0.2308 0.3904 -0.13069 2021 7 28 59423 0.2315 0.3889 -0.12983 2021 7 29 59424 0.2322 0.3874 -0.12902 2021 7 30 59425 0.2329 0.3859 -0.12819 2021 7 31 59426 0.2336 0.3844 -0.12729 2021 8 1 59427 0.2342 0.3829 -0.12627 2021 8 2 59428 0.2348 0.3813 -0.12511 2021 8 3 59429 0.2354 0.3798 -0.12380 2021 8 4 59430 0.2360 0.3782 -0.12236 2021 8 5 59431 0.2365 0.3766 -0.12083 2021 8 6 59432 0.2370 0.3750 -0.11927 2021 8 7 59433 0.2374 0.3734 -0.11774 2021 8 8 59434 0.2379 0.3718 -0.11633 2021 8 9 59435 0.2383 0.3702 -0.11510 2021 8 10 59436 0.2387 0.3686 -0.11411 2021 8 11 59437 0.2390 0.3669 -0.11337 2021 8 12 59438 0.2394 0.3653 -0.11283 2021 8 13 59439 0.2397 0.3637 -0.11241 2021 8 14 59440 0.2399 0.3620 -0.11199 2021 8 15 59441 0.2402 0.3604 -0.11148 2021 8 16 59442 0.2404 0.3587 -0.11079 2021 8 17 59443 0.2405 0.3570 -0.10988 2021 8 18 59444 0.2407 0.3554 -0.10880 2021 8 19 59445 0.2408 0.3537 -0.10761 2021 8 20 59446 0.2409 0.3520 -0.10642 2021 8 21 59447 0.2409 0.3503 -0.10534 2021 8 22 59448 0.2410 0.3487 -0.10445 2021 8 23 59449 0.2409 0.3470 -0.10374 2021 8 24 59450 0.2409 0.3453 -0.10321 2021 8 25 59451 0.2408 0.3436 -0.10278 2021 8 26 59452 0.2407 0.3419 -0.10237 2021 8 27 59453 0.2406 0.3402 -0.10192 2021 8 28 59454 0.2405 0.3386 -0.10136 2021 8 29 59455 0.2403 0.3369 -0.10067 2021 8 30 59456 0.2400 0.3352 -0.09984 2021 8 31 59457 0.2398 0.3335 -0.09888 2021 9 1 59458 0.2395 0.3319 -0.09781 2021 9 2 59459 0.2392 0.3302 -0.09669 2021 9 3 59460 0.2388 0.3285 -0.09560 2021 9 4 59461 0.2385 0.3268 -0.09459 2021 9 5 59462 0.2381 0.3252 -0.09377 2021 9 6 59463 0.2376 0.3235 -0.09318 2021 9 7 59464 0.2371 0.3219 -0.09287 2021 9 8 59465 0.2367 0.3202 -0.09279 2021 9 9 59466 0.2361 0.3186 -0.09288 2021 9 10 59467 0.2356 0.3170 -0.09301 2021 9 11 59468 0.2350 0.3154 -0.09305 2021 9 12 59469 0.2344 0.3137 -0.09291 2021 9 13 59470 0.2337 0.3121 -0.09253 2021 9 14 59471 0.2330 0.3105 -0.09195 2021 9 15 59472 0.2323 0.3090 -0.09124 2021 9 16 59473 0.2316 0.3074 -0.09051 2021 9 17 59474 0.2308 0.3058 -0.08986 2021 9 18 59475 0.2300 0.3043 -0.08937 2021 9 19 59476 0.2292 0.3027 -0.08907 2021 9 20 59477 0.2283 0.3012 -0.08896 2021 9 21 59478 0.2275 0.2997 -0.08898 2021 9 22 59479 0.2265 0.2981 -0.08906 2021 9 23 59480 0.2256 0.2966 -0.08911 2021 9 24 59481 0.2246 0.2952 -0.08908 2021 9 25 59482 0.2236 0.2937 -0.08892 2021 9 26 59483 0.2226 0.2922 -0.08859 2021 9 27 59484 0.2216 0.2908 -0.08812 2021 9 28 59485 0.2205 0.2894 -0.08752 2021 9 29 59486 0.2194 0.2880 -0.08685 2021 9 30 59487 0.2183 0.2866 -0.08617 2021 10 1 59488 0.2171 0.2852 -0.08555 2021 10 2 59489 0.2159 0.2838 -0.08508 2021 10 3 59490 0.2147 0.2825 -0.08481 2021 10 4 59491 0.2135 0.2812 -0.08481 2021 10 5 59492 0.2122 0.2799 -0.08508 2021 10 6 59493 0.2109 0.2786 -0.08557 2021 10 7 59494 0.2096 0.2773 -0.08615 2021 10 8 59495 0.2083 0.2761 -0.08670 2021 10 9 59496 0.2069 0.2748 -0.08707 2021 10 10 59497 0.2056 0.2736 -0.08719 2021 10 11 59498 0.2042 0.2724 -0.08706 2021 10 12 59499 0.2027 0.2713 -0.08674 2021 10 13 59500 0.2013 0.2701 -0.08635 2021 10 14 59501 0.1998 0.2690 -0.08601 2021 10 15 59502 0.1983 0.2679 -0.08579 2021 10 16 59503 0.1968 0.2668 -0.08575 2021 10 17 59504 0.1953 0.2657 -0.08589 2021 10 18 59505 0.1937 0.2647 -0.08616 2021 10 19 59506 0.1922 0.2637 -0.08651 2021 10 20 59507 0.1906 0.2627 -0.08685 2021 10 21 59508 0.1890 0.2617 -0.08713 2021 10 22 59509 0.1873 0.2608 -0.08728 2021 10 23 59510 0.1857 0.2599 -0.08727 2021 10 24 59511 0.1840 0.2590 -0.08709 2021 10 25 59512 0.1823 0.2581 -0.08676 2021 10 26 59513 0.1806 0.2573 -0.08632 2021 10 27 59514 0.1789 0.2564 -0.08584 2021 10 28 59515 0.1772 0.2556 -0.08539 2021 10 29 59516 0.1754 0.2549 -0.08503 2021 10 30 59517 0.1737 0.2541 -0.08485 2021 10 31 59518 0.1719 0.2534 -0.08489 2021 11 1 59519 0.1701 0.2527 -0.08519 2021 11 2 59520 0.1683 0.2521 -0.08574 2021 11 3 59521 0.1665 0.2514 -0.08645 2021 11 4 59522 0.1646 0.2508 -0.08720 2021 11 5 59523 0.1628 0.2503 -0.08783 2021 11 6 59524 0.1609 0.2497 -0.08822 2021 11 7 59525 0.1591 0.2492 -0.08834 2021 11 8 59526 0.1572 0.2487 -0.08822 2021 11 9 59527 0.1553 0.2482 -0.08798 2021 11 10 59528 0.1534 0.2478 -0.08773 2021 11 11 59529 0.1515 0.2474 -0.08758 2021 11 12 59530 0.1496 0.2470 -0.08760 2021 11 13 59531 0.1476 0.2467 -0.08778 2021 11 14 59532 0.1457 0.2464 -0.08810 2021 11 15 59533 0.1438 0.2461 -0.08850 2021 11 16 59534 0.1418 0.2458 -0.08891 2021 11 17 59535 0.1399 0.2456 -0.08927 2021 11 18 59536 0.1379 0.2454 -0.08951 2021 11 19 59537 0.1359 0.2452 -0.08960 2021 11 20 59538 0.1340 0.2451 -0.08951 2021 11 21 59539 0.1320 0.2450 -0.08927 2021 11 22 59540 0.1300 0.2449 -0.08889 2021 11 23 59541 0.1280 0.2448 -0.08844 2021 11 24 59542 0.1261 0.2448 -0.08798 2021 11 25 59543 0.1241 0.2448 -0.08758 2021 11 26 59544 0.1221 0.2448 -0.08731 2021 11 27 59545 0.1201 0.2449 -0.08721 2021 11 28 59546 0.1181 0.2450 -0.08733 2021 11 29 59547 0.1161 0.2451 -0.08767 2021 11 30 59548 0.1142 0.2453 -0.08819 2021 12 1 59549 0.1122 0.2455 -0.08880 2021 12 2 59550 0.1102 0.2457 -0.08937 2021 12 3 59551 0.1082 0.2460 -0.08977 2021 12 4 59552 0.1062 0.2463 -0.08992 2021 12 5 59553 0.1043 0.2466 -0.08981 2021 12 6 59554 0.1023 0.2469 -0.08953 2021 12 7 59555 0.1003 0.2473 -0.08919 2021 12 8 59556 0.0984 0.2477 -0.08892 2021 12 9 59557 0.0964 0.2481 -0.08880 2021 12 10 59558 0.0945 0.2486 -0.08884 2021 12 11 59559 0.0926 0.2491 -0.08902 2021 12 12 59560 0.0906 0.2496 -0.08927 2021 12 13 59561 0.0887 0.2501 -0.08954 2021 12 14 59562 0.0868 0.2507 -0.08978 2021 12 15 59563 0.0849 0.2513 -0.08995 2021 12 16 59564 0.0830 0.2520 -0.09001 2021 12 17 59565 0.0811 0.2527 -0.08993 2021 12 18 59566 0.0792 0.2533 -0.08967 2021 12 19 59567 0.0774 0.2541 -0.08922 2021 12 20 59568 0.0755 0.2548 -0.08860 2021 12 21 59569 0.0737 0.2556 -0.08790 2021 12 22 59570 0.0719 0.2564 -0.08723 2021 12 23 59571 0.0701 0.2573 -0.08666 2021 12 24 59572 0.0683 0.2581 -0.08618 2021 12 25 59573 0.0665 0.2590 -0.08586 2021 12 26 59574 0.0647 0.2600 -0.08568 2021 12 27 59575 0.0630 0.2609 -0.08572 2021 12 28 59576 0.0612 0.2619 -0.08582 2021 12 29 59577 0.0595 0.2629 -0.08592 2021 12 30 59578 0.0578 0.2639 -0.08595 2021 12 31 59579 0.0561 0.2650 -0.08574 2022 1 1 59580 0.0544 0.2661 -0.08525 2022 1 2 59581 0.0528 0.2672 -0.08460 2022 1 3 59582 0.0512 0.2683 -0.08388 2022 1 4 59583 0.0495 0.2695 -0.08321 2022 1 5 59584 0.0480 0.2707 -0.08267 2022 1 6 59585 0.0464 0.2719 -0.08228 2022 1 7 59586 0.0448 0.2731 -0.08200 2022 1 8 59587 0.0433 0.2744 -0.08178 2022 1 9 59588 0.0418 0.2756 -0.08163 2022 1 10 59589 0.0403 0.2769 -0.08144 2022 1 11 59590 0.0388 0.2783 -0.08118 2022 1 12 59591 0.0374 0.2796 -0.08079 2022 1 13 59592 0.0360 0.2810 -0.08036 2022 1 14 59593 0.0346 0.2824 -0.07992 2022 1 15 59594 0.0332 0.2838 -0.07932 2022 1 16 59595 0.0319 0.2852 -0.07862 2022 1 17 59596 0.0305 0.2867 -0.07785 2022 1 18 59597 0.0293 0.2882 -0.07708 2022 1 19 59598 0.0280 0.2897 -0.07640 2022 1 20 59599 0.0267 0.2912 -0.07587 2022 1 21 59600 0.0255 0.2927 -0.07555 2022 1 22 59601 0.0243 0.2943 -0.07544 2022 1 23 59602 0.0232 0.2959 -0.07556 2022 1 24 59603 0.0220 0.2975 -0.07583 2022 1 25 59604 0.0209 0.2991 -0.07616 2022 1 26 59605 0.0198 0.3007 -0.07639 2022 1 27 59606 0.0188 0.3024 -0.07641 2022 1 28 59607 0.0178 0.3040 -0.07621 2022 1 29 59608 0.0168 0.3057 -0.07579 2022 1 30 59609 0.0158 0.3074 -0.07516 2022 1 31 59610 0.0149 0.3091 -0.07453 2022 2 1 59611 0.0140 0.3108 -0.07401 2022 2 2 59612 0.0131 0.3126 -0.07369 2022 2 3 59613 0.0122 0.3143 -0.07353 2022 2 4 59614 0.0114 0.3161 -0.07355 2022 2 5 59615 0.0106 0.3179 -0.07364 2022 2 6 59616 0.0099 0.3197 -0.07367 2022 2 7 59617 0.0092 0.3215 -0.07358 2022 2 8 59618 0.0085 0.3233 -0.07337 2022 2 9 59619 0.0078 0.3251 -0.07294 2022 2 10 59620 0.0072 0.3269 -0.07234 2022 2 11 59621 0.0066 0.3288 -0.07168 2022 2 12 59622 0.0060 0.3306 -0.07099 2022 2 13 59623 0.0055 0.3325 -0.07031 2022 2 14 59624 0.0050 0.3344 -0.06973 2022 2 15 59625 0.0045 0.3363 -0.06930 2022 2 16 59626 0.0041 0.3381 -0.06904 2022 2 17 59627 0.0037 0.3400 -0.06899 2022 2 18 59628 0.0033 0.3419 -0.06916 2022 2 19 59629 0.0030 0.3438 -0.06949 2022 2 20 59630 0.0027 0.3458 -0.06990 2022 2 21 59631 0.0025 0.3477 -0.07043 2022 2 22 59632 0.0022 0.3496 -0.07093 2022 2 23 59633 0.0020 0.3515 -0.07126 2022 2 24 59634 0.0019 0.3535 -0.07142 2022 2 25 59635 0.0017 0.3554 -0.07149 2022 2 26 59636 0.0016 0.3573 -0.07148 2022 2 27 59637 0.0016 0.3593 -0.07144 2022 2 28 59638 0.0016 0.3612 -0.07154 2022 3 1 59639 0.0016 0.3631 -0.07189 2022 3 2 59640 0.0016 0.3651 -0.07253 2022 3 3 59641 0.0017 0.3670 -0.07344 2022 3 4 59642 0.0018 0.3689 -0.07445 2022 3 5 59643 0.0019 0.3709 -0.07550 2022 3 6 59644 0.0021 0.3728 -0.07647 2022 3 7 59645 0.0023 0.3747 -0.07725 2022 3 8 59646 0.0026 0.3767 -0.07789 2022 3 9 59647 0.0029 0.3786 -0.07829 2022 3 10 59648 0.0032 0.3805 -0.07846 2022 3 11 59649 0.0035 0.3824 -0.07846 2022 3 12 59650 0.0039 0.3843 -0.07830 2022 3 13 59651 0.0043 0.3862 -0.07806 2022 3 14 59652 0.0048 0.3881 -0.07783 2022 3 15 59653 0.0053 0.3900 -0.07769 2022 3 16 59654 0.0058 0.3919 -0.07775 2022 3 17 59655 0.0064 0.3938 -0.07810 2022 3 18 59656 0.0069 0.3957 -0.07868 2022 3 19 59657 0.0076 0.3975 -0.07945 2022 3 20 59658 0.0082 0.3994 -0.08031 2022 3 21 59659 0.0089 0.4012 -0.08113 2022 3 22 59660 0.0096 0.4031 -0.08174 2022 3 23 59661 0.0104 0.4049 -0.08209 2022 3 24 59662 0.0111 0.4067 -0.08222 2022 3 25 59663 0.0120 0.4085 -0.08217 2022 3 26 59664 0.0128 0.4103 -0.08200 2022 3 27 59665 0.0137 0.4120 -0.08182 2022 3 28 59666 0.0146 0.4138 -0.08174 2022 3 29 59667 0.0155 0.4156 -0.08188 2022 3 30 59668 0.0165 0.4173 -0.08222 2022 3 31 59669 0.0175 0.4190 -0.08277 2022 4 1 59670 0.0185 0.4207 -0.08348 2022 4 2 59671 0.0196 0.4224 -0.08416 2022 4 3 59672 0.0207 0.4241 -0.08475 2022 4 4 59673 0.0218 0.4257 -0.08520 2022 4 5 59674 0.0230 0.4274 -0.08545 2022 4 6 59675 0.0241 0.4290 -0.08548 2022 4 7 59676 0.0253 0.4306 -0.08535 2022 4 8 59677 0.0266 0.4322 -0.08515 2022 4 9 59678 0.0278 0.4337 -0.08492 2022 4 10 59679 0.0291 0.4353 -0.08473 2022 4 11 59680 0.0305 0.4368 -0.08466 2022 4 12 59681 0.0318 0.4383 -0.08483 2022 4 13 59682 0.0332 0.4398 -0.08523 2022 4 14 59683 0.0346 0.4413 -0.08582 2022 4 15 59684 0.0360 0.4427 -0.08660 2022 4 16 59685 0.0375 0.4441 -0.08749 2022 4 17 59686 0.0389 0.4455 -0.08833 2022 4 18 59687 0.0404 0.4469 -0.08902 2022 4 19 59688 0.0420 0.4483 -0.08950 2022 4 20 59689 0.0435 0.4496 -0.08972 2022 4 21 59690 0.0451 0.4509 -0.08973 2022 4 22 59691 0.0467 0.4522 -0.08962 2022 4 23 59692 0.0483 0.4534 -0.08961 2022 4 24 59693 0.0499 0.4547 -0.08968 2022 4 25 59694 0.0516 0.4559 -0.08993 2022 4 26 59695 0.0533 0.4571 -0.09040 2022 4 27 59696 0.0550 0.4582 -0.09095 2022 4 28 59697 0.0567 0.4594 -0.09152 2022 4 29 59698 0.0585 0.4605 -0.09204 2022 4 30 59699 0.0602 0.4616 -0.09254 2022 5 1 59700 0.0620 0.4626 -0.09301 2022 5 2 59701 0.0638 0.4636 -0.09331 2022 5 3 59702 0.0657 0.4646 -0.09352 2022 5 4 59703 0.0675 0.4656 -0.09355 2022 5 5 59704 0.0694 0.4666 -0.09346 2022 5 6 59705 0.0712 0.4675 -0.09329 2022 5 7 59706 0.0731 0.4684 -0.09308 2022 5 8 59707 0.0750 0.4692 -0.09296 2022 5 9 59708 0.0769 0.4700 -0.09302 2022 5 10 59709 0.0789 0.4708 -0.09327 2022 5 11 59710 0.0808 0.4716 -0.09373 2022 5 12 59711 0.0828 0.4724 -0.09440 2022 5 13 59712 0.0848 0.4731 -0.09522 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) 59325 -105.27 0.56 -9.86 0.08 59326 -105.05 0.56 -9.93 0.08 59327 -105.05 0.56 -10.16 0.08 59328 -104.96 0.61 -10.31 0.09 59329 -104.77 0.61 -10.12 0.09 59330 -104.88 0.61 -9.68 0.09 59331 -105.48 0.32 -9.40 0.16 59332 -106.16 0.89 -9.43 0.11 59333 -106.37 0.89 -9.59 0.11 59334 -106.03 0.89 -9.66 0.11 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59325 0.142 0.223 -0.083 0.081 59326 0.172 0.223 -0.081 0.081 59327 0.210 0.223 -0.075 0.081 59328 0.245 0.245 -0.064 0.092 59329 0.274 0.245 -0.047 0.092 59330 0.299 0.245 -0.027 0.092 59331 0.320 0.128 -0.004 0.160 59332 0.338 0.353 0.022 0.107 59333 0.353 0.353 0.049 0.107 59334 0.368 0.353 0.078 0.107 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).