********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 3 June 2021 Vol. XXXIV No. 022 ______________________________________________________________________ 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 28 59362 0.15615 .00009 0.44407 .00009 -0.185410 0.000007 21 5 29 59363 0.15781 .00009 0.44345 .00009 -0.185050 0.000007 21 5 30 59364 0.15941 .00009 0.44318 .00009 -0.184588 0.000007 21 5 31 59365 0.16083 .00009 0.44298 .00009 -0.184173 0.000007 21 6 1 59366 0.16220 .00009 0.44258 .00009 -0.183871 0.000006 21 6 2 59367 0.16342 .00010 0.44220 .00009 -0.183704 0.000007 21 6 3 59368 0.16445 .00011 0.44193 .00010 -0.183655 0.000007 _______________________________________________________________________ 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 = 0.1341 + 0.0264 cos A + 0.1152 sin A + 0.0090 cos C - 0.0362 sin C y = 0.3672 + 0.1087 cos A - 0.0202 sin A - 0.0362 cos C - 0.0090 sin C UT1-UTC = -0.1556 + 0.00025 (MJD - 59376) - (UT2-UT1) where A = 2*pi*(MJD-59368)/365.25 and C = 2*pi*(MJD-59368)/435. TAI-UTC(MJD 59369) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59368)**0.80 S t = 0.00025 (MJD-59368)**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 4 59369 0.1655 0.4416 -0.18367 2021 6 5 59370 0.1667 0.4412 -0.18366 2021 6 6 59371 0.1680 0.4407 -0.18354 2021 6 7 59372 0.1694 0.4403 -0.18329 2021 6 8 59373 0.1709 0.4399 -0.18289 2021 6 9 59374 0.1724 0.4395 -0.18234 2021 6 10 59375 0.1739 0.4390 -0.18160 2021 6 11 59376 0.1753 0.4385 -0.18072 2021 6 12 59377 0.1768 0.4381 -0.17975 2021 6 13 59378 0.1782 0.4376 -0.17875 2021 6 14 59379 0.1797 0.4370 -0.17781 2021 6 15 59380 0.1812 0.4364 -0.17700 2021 6 16 59381 0.1827 0.4358 -0.17638 2021 6 17 59382 0.1841 0.4352 -0.17598 2021 6 18 59383 0.1856 0.4346 -0.17579 2021 6 19 59384 0.1870 0.4339 -0.17579 2021 6 20 59385 0.1885 0.4333 -0.17589 2021 6 21 59386 0.1899 0.4326 -0.17594 2021 6 22 59387 0.1913 0.4318 -0.17583 2021 6 23 59388 0.1928 0.4311 -0.17549 2021 6 24 59389 0.1942 0.4303 -0.17489 2021 6 25 59390 0.1956 0.4295 -0.17411 2021 6 26 59391 0.1970 0.4286 -0.17323 2021 6 27 59392 0.1983 0.4278 -0.17238 2021 6 28 59393 0.1997 0.4269 -0.17162 2021 6 29 59394 0.2010 0.4260 -0.17097 2021 6 30 59395 0.2024 0.4250 -0.17041 2021 7 1 59396 0.2037 0.4241 -0.16990 2021 7 2 59397 0.2050 0.4231 -0.16938 2021 7 3 59398 0.2063 0.4221 -0.16880 2021 7 4 59399 0.2076 0.4211 -0.16813 2021 7 5 59400 0.2088 0.4200 -0.16731 2021 7 6 59401 0.2100 0.4190 -0.16633 2021 7 7 59402 0.2113 0.4179 -0.16518 2021 7 8 59403 0.2125 0.4168 -0.16391 2021 7 9 59404 0.2136 0.4156 -0.16253 2021 7 10 59405 0.2148 0.4145 -0.16111 2021 7 11 59406 0.2159 0.4133 -0.15973 2021 7 12 59407 0.2170 0.4121 -0.15845 2021 7 13 59408 0.2181 0.4109 -0.15734 2021 7 14 59409 0.2192 0.4097 -0.15644 2021 7 15 59410 0.2203 0.4085 -0.15575 2021 7 16 59411 0.2213 0.4072 -0.15522 2021 7 17 59412 0.2223 0.4059 -0.15476 2021 7 18 59413 0.2233 0.4046 -0.15427 2021 7 19 59414 0.2243 0.4033 -0.15365 2021 7 20 59415 0.2252 0.4020 -0.15281 2021 7 21 59416 0.2261 0.4006 -0.15172 2021 7 22 59417 0.2270 0.3992 -0.15044 2021 7 23 59418 0.2279 0.3978 -0.14905 2021 7 24 59419 0.2287 0.3965 -0.14766 2021 7 25 59420 0.2296 0.3950 -0.14639 2021 7 26 59421 0.2303 0.3936 -0.14528 2021 7 27 59422 0.2311 0.3922 -0.14433 2021 7 28 59423 0.2319 0.3907 -0.14349 2021 7 29 59424 0.2326 0.3892 -0.14270 2021 7 30 59425 0.2333 0.3878 -0.14189 2021 7 31 59426 0.2339 0.3863 -0.14100 2021 8 1 59427 0.2346 0.3847 -0.13999 2021 8 2 59428 0.2352 0.3832 -0.13882 2021 8 3 59429 0.2358 0.3817 -0.13750 2021 8 4 59430 0.2363 0.3802 -0.13604 2021 8 5 59431 0.2368 0.3786 -0.13448 2021 8 6 59432 0.2373 0.3770 -0.13288 2021 8 7 59433 0.2378 0.3755 -0.13132 2021 8 8 59434 0.2382 0.3739 -0.12989 2021 8 9 59435 0.2387 0.3723 -0.12865 2021 8 10 59436 0.2390 0.3707 -0.12766 2021 8 11 59437 0.2394 0.3691 -0.12692 2021 8 12 59438 0.2397 0.3675 -0.12638 2021 8 13 59439 0.2400 0.3659 -0.12597 2021 8 14 59440 0.2403 0.3642 -0.12557 2021 8 15 59441 0.2405 0.3626 -0.12507 2021 8 16 59442 0.2407 0.3609 -0.12439 2021 8 17 59443 0.2409 0.3593 -0.12350 2021 8 18 59444 0.2411 0.3577 -0.12242 2021 8 19 59445 0.2412 0.3560 -0.12124 2021 8 20 59446 0.2413 0.3543 -0.12005 2021 8 21 59447 0.2413 0.3527 -0.11897 2021 8 22 59448 0.2414 0.3510 -0.11807 2021 8 23 59449 0.2414 0.3494 -0.11735 2021 8 24 59450 0.2413 0.3477 -0.11680 2021 8 25 59451 0.2413 0.3460 -0.11635 2021 8 26 59452 0.2412 0.3444 -0.11593 2021 8 27 59453 0.2411 0.3427 -0.11545 2021 8 28 59454 0.2409 0.3410 -0.11487 2021 8 29 59455 0.2407 0.3393 -0.11414 2021 8 30 59456 0.2405 0.3377 -0.11327 2021 8 31 59457 0.2403 0.3360 -0.11227 2021 9 1 59458 0.2400 0.3343 -0.11116 2021 9 2 59459 0.2397 0.3327 -0.11001 2021 9 3 59460 0.2393 0.3310 -0.10889 2021 9 4 59461 0.2390 0.3294 -0.10786 2021 9 5 59462 0.2386 0.3277 -0.10701 2021 9 6 59463 0.2381 0.3261 -0.10640 2021 9 7 59464 0.2377 0.3244 -0.10607 2021 9 8 59465 0.2372 0.3228 -0.10597 2021 9 9 59466 0.2367 0.3212 -0.10604 2021 9 10 59467 0.2361 0.3195 -0.10615 2021 9 11 59468 0.2355 0.3179 -0.10618 2021 9 12 59469 0.2349 0.3163 -0.10601 2021 9 13 59470 0.2343 0.3147 -0.10563 2021 9 14 59471 0.2336 0.3131 -0.10504 2021 9 15 59472 0.2329 0.3115 -0.10433 2021 9 16 59473 0.2322 0.3100 -0.10359 2021 9 17 59474 0.2314 0.3084 -0.10294 2021 9 18 59475 0.2307 0.3068 -0.10245 2021 9 19 59476 0.2299 0.3053 -0.10216 2021 9 20 59477 0.2290 0.3038 -0.10209 2021 9 21 59478 0.2281 0.3022 -0.10216 2021 9 22 59479 0.2272 0.3007 -0.10229 2021 9 23 59480 0.2263 0.2992 -0.10239 2021 9 24 59481 0.2254 0.2977 -0.10240 2021 9 25 59482 0.2244 0.2963 -0.10229 2021 9 26 59483 0.2234 0.2948 -0.10201 2021 9 27 59484 0.2223 0.2934 -0.10159 2021 9 28 59485 0.2213 0.2919 -0.10104 2021 9 29 59486 0.2202 0.2905 -0.10041 2021 9 30 59487 0.2191 0.2891 -0.09978 2021 10 1 59488 0.2179 0.2877 -0.09922 2021 10 2 59489 0.2168 0.2864 -0.09879 2021 10 3 59490 0.2156 0.2850 -0.09858 2021 10 4 59491 0.2143 0.2837 -0.09863 2021 10 5 59492 0.2131 0.2824 -0.09895 2021 10 6 59493 0.2118 0.2811 -0.09949 2021 10 7 59494 0.2105 0.2798 -0.10013 2021 10 8 59495 0.2092 0.2785 -0.10072 2021 10 9 59496 0.2079 0.2773 -0.10114 2021 10 10 59497 0.2065 0.2761 -0.10130 2021 10 11 59498 0.2051 0.2749 -0.10121 2021 10 12 59499 0.2037 0.2737 -0.10094 2021 10 13 59500 0.2023 0.2725 -0.10059 2021 10 14 59501 0.2009 0.2714 -0.10028 2021 10 15 59502 0.1994 0.2703 -0.10011 2021 10 16 59503 0.1979 0.2692 -0.10010 2021 10 17 59504 0.1964 0.2681 -0.10027 2021 10 18 59505 0.1948 0.2670 -0.10057 2021 10 19 59506 0.1933 0.2660 -0.10095 2021 10 20 59507 0.1917 0.2650 -0.10133 2021 10 21 59508 0.1901 0.2640 -0.10163 2021 10 22 59509 0.1885 0.2631 -0.10181 2021 10 23 59510 0.1869 0.2621 -0.10183 2021 10 24 59511 0.1852 0.2612 -0.10168 2021 10 25 59512 0.1836 0.2603 -0.10137 2021 10 26 59513 0.1819 0.2595 -0.10097 2021 10 27 59514 0.1802 0.2586 -0.10052 2021 10 28 59515 0.1785 0.2578 -0.10009 2021 10 29 59516 0.1767 0.2571 -0.09976 2021 10 30 59517 0.1750 0.2563 -0.09960 2021 10 31 59518 0.1732 0.2556 -0.09967 2021 11 1 59519 0.1714 0.2549 -0.09999 2021 11 2 59520 0.1697 0.2542 -0.10056 2021 11 3 59521 0.1679 0.2535 -0.10129 2021 11 4 59522 0.1660 0.2529 -0.10205 2021 11 5 59523 0.1642 0.2523 -0.10269 2021 11 6 59524 0.1624 0.2517 -0.10308 2021 11 7 59525 0.1605 0.2512 -0.10320 2021 11 8 59526 0.1587 0.2507 -0.10308 2021 11 9 59527 0.1568 0.2502 -0.10282 2021 11 10 59528 0.1549 0.2497 -0.10255 2021 11 11 59529 0.1530 0.2493 -0.10237 2021 11 12 59530 0.1511 0.2489 -0.10234 2021 11 13 59531 0.1492 0.2485 -0.10248 2021 11 14 59532 0.1473 0.2482 -0.10274 2021 11 15 59533 0.1454 0.2479 -0.10306 2021 11 16 59534 0.1435 0.2476 -0.10338 2021 11 17 59535 0.1415 0.2473 -0.10364 2021 11 18 59536 0.1396 0.2471 -0.10378 2021 11 19 59537 0.1377 0.2469 -0.10376 2021 11 20 59538 0.1357 0.2468 -0.10356 2021 11 21 59539 0.1338 0.2466 -0.10320 2021 11 22 59540 0.1318 0.2465 -0.10270 2021 11 23 59541 0.1299 0.2464 -0.10212 2021 11 24 59542 0.1279 0.2464 -0.10154 2021 11 25 59543 0.1259 0.2464 -0.10102 2021 11 26 59544 0.1240 0.2464 -0.10062 2021 11 27 59545 0.1220 0.2464 -0.10042 2021 11 28 59546 0.1200 0.2465 -0.10044 2021 11 29 59547 0.1181 0.2466 -0.10069 2021 11 30 59548 0.1161 0.2468 -0.10113 2021 12 1 59549 0.1142 0.2469 -0.10167 2021 12 2 59550 0.1122 0.2471 -0.10216 2021 12 3 59551 0.1102 0.2473 -0.10248 2021 12 4 59552 0.1083 0.2476 -0.10255 2021 12 5 59553 0.1063 0.2479 -0.10235 2021 12 6 59554 0.1044 0.2482 -0.10196 2021 12 7 59555 0.1025 0.2485 -0.10153 2021 12 8 59556 0.1005 0.2489 -0.10115 2021 12 9 59557 0.0986 0.2493 -0.10093 2021 12 10 59558 0.0967 0.2498 -0.10087 2021 12 11 59559 0.0948 0.2502 -0.10095 2021 12 12 59560 0.0928 0.2507 -0.10108 2021 12 13 59561 0.0909 0.2512 -0.10122 2021 12 14 59562 0.0891 0.2518 -0.10129 2021 12 15 59563 0.0872 0.2524 -0.10125 2021 12 16 59564 0.0853 0.2530 -0.10108 2021 12 17 59565 0.0834 0.2536 -0.10075 2021 12 18 59566 0.0816 0.2543 -0.10028 2021 12 19 59567 0.0797 0.2550 -0.09969 2021 12 20 59568 0.0779 0.2557 -0.09902 2021 12 21 59569 0.0761 0.2565 -0.09834 2021 12 22 59570 0.0743 0.2573 -0.09772 2021 12 23 59571 0.0725 0.2581 -0.09721 2021 12 24 59572 0.0707 0.2589 -0.09688 2021 12 25 59573 0.0690 0.2598 -0.09675 2021 12 26 59574 0.0672 0.2607 -0.09682 2021 12 27 59575 0.0655 0.2616 -0.09706 2021 12 28 59576 0.0638 0.2626 -0.09740 2021 12 29 59577 0.0621 0.2635 -0.09775 2021 12 30 59578 0.0604 0.2645 -0.09797 2021 12 31 59579 0.0587 0.2656 -0.09797 2022 1 1 59580 0.0571 0.2666 -0.09772 2022 1 2 59581 0.0554 0.2677 -0.09725 2022 1 3 59582 0.0538 0.2688 -0.09669 2022 1 4 59583 0.0522 0.2699 -0.09619 2022 1 5 59584 0.0507 0.2711 -0.09585 2022 1 6 59585 0.0491 0.2723 -0.09571 2022 1 7 59586 0.0476 0.2735 -0.09576 2022 1 8 59587 0.0461 0.2747 -0.09592 2022 1 9 59588 0.0446 0.2760 -0.09612 2022 1 10 59589 0.0431 0.2772 -0.09629 2022 1 11 59590 0.0417 0.2785 -0.09638 2022 1 12 59591 0.0402 0.2799 -0.09628 2022 1 13 59592 0.0388 0.2812 -0.09594 2022 1 14 59593 0.0375 0.2826 -0.09543 2022 1 15 59594 0.0361 0.2840 -0.09482 2022 1 16 59595 0.0348 0.2854 -0.09417 2022 1 17 59596 0.0335 0.2868 -0.09352 2022 1 18 59597 0.0322 0.2883 -0.09287 2022 1 19 59598 0.0309 0.2897 -0.09232 2022 1 20 59599 0.0297 0.2912 -0.09190 2022 1 21 59600 0.0285 0.2927 -0.09165 2022 1 22 59601 0.0273 0.2943 -0.09159 2022 1 23 59602 0.0262 0.2958 -0.09178 2022 1 24 59603 0.0251 0.2974 -0.09214 2022 1 25 59604 0.0240 0.2990 -0.09255 2022 1 26 59605 0.0229 0.3006 -0.09292 2022 1 27 59606 0.0219 0.3022 -0.09320 2022 1 28 59607 0.0209 0.3038 -0.09331 2022 1 29 59608 0.0199 0.3055 -0.09321 2022 1 30 59609 0.0189 0.3072 -0.09290 2022 1 31 59610 0.0180 0.3088 -0.09252 2022 2 1 59611 0.0171 0.3105 -0.09221 2022 2 2 59612 0.0163 0.3123 -0.09210 2022 2 3 59613 0.0154 0.3140 -0.09221 2022 2 4 59614 0.0146 0.3157 -0.09241 2022 2 5 59615 0.0138 0.3175 -0.09263 2022 2 6 59616 0.0131 0.3192 -0.09277 2022 2 7 59617 0.0124 0.3210 -0.09284 2022 2 8 59618 0.0117 0.3228 -0.09271 2022 2 9 59619 0.0111 0.3246 -0.09238 2022 2 10 59620 0.0105 0.3264 -0.09192 2022 2 11 59621 0.0099 0.3283 -0.09128 2022 2 12 59622 0.0093 0.3301 -0.09049 2022 2 13 59623 0.0088 0.3319 -0.08970 2022 2 14 59624 0.0083 0.3338 -0.08896 2022 2 15 59625 0.0079 0.3356 -0.08833 2022 2 16 59626 0.0074 0.3375 -0.08786 2022 2 17 59627 0.0070 0.3394 -0.08756 2022 2 18 59628 0.0067 0.3412 -0.08742 2022 2 19 59629 0.0064 0.3431 -0.08744 2022 2 20 59630 0.0061 0.3450 -0.08764 2022 2 21 59631 0.0058 0.3469 -0.08790 2022 2 22 59632 0.0056 0.3488 -0.08813 2022 2 23 59633 0.0054 0.3507 -0.08823 2022 2 24 59634 0.0053 0.3526 -0.08825 2022 2 25 59635 0.0051 0.3545 -0.08822 2022 2 26 59636 0.0050 0.3565 -0.08804 2022 2 27 59637 0.0050 0.3584 -0.08782 2022 2 28 59638 0.0050 0.3603 -0.08766 2022 3 1 59639 0.0050 0.3622 -0.08765 2022 3 2 59640 0.0050 0.3641 -0.08785 2022 3 3 59641 0.0051 0.3660 -0.08825 2022 3 4 59642 0.0052 0.3680 -0.08879 2022 3 5 59643 0.0054 0.3699 -0.08935 2022 3 6 59644 0.0055 0.3718 -0.08990 2022 3 7 59645 0.0058 0.3737 -0.09033 2022 3 8 59646 0.0060 0.3756 -0.09061 2022 3 9 59647 0.0063 0.3775 -0.09068 2022 3 10 59648 0.0066 0.3794 -0.09052 2022 3 11 59649 0.0070 0.3813 -0.09023 2022 3 12 59650 0.0073 0.3832 -0.08985 2022 3 13 59651 0.0078 0.3851 -0.08937 2022 3 14 59652 0.0082 0.3870 -0.08895 2022 3 15 59653 0.0087 0.3889 -0.08867 2022 3 16 59654 0.0092 0.3907 -0.08859 2022 3 17 59655 0.0098 0.3926 -0.08868 2022 3 18 59656 0.0103 0.3945 -0.08901 2022 3 19 59657 0.0110 0.3963 -0.08951 2022 3 20 59658 0.0116 0.3981 -0.09004 2022 3 21 59659 0.0123 0.4000 -0.09051 2022 3 22 59660 0.0130 0.4018 -0.09083 2022 3 23 59661 0.0137 0.4036 -0.09088 2022 3 24 59662 0.0145 0.4054 -0.09071 2022 3 25 59663 0.0153 0.4072 -0.09045 2022 3 26 59664 0.0162 0.4089 -0.09019 2022 3 27 59665 0.0170 0.4107 -0.09002 2022 3 28 59666 0.0179 0.4125 -0.09008 2022 3 29 59667 0.0189 0.4142 -0.09041 2022 3 30 59668 0.0198 0.4159 -0.09095 2022 3 31 59669 0.0208 0.4176 -0.09164 2022 4 1 59670 0.0218 0.4193 -0.09239 2022 4 2 59671 0.0229 0.4210 -0.09307 2022 4 3 59672 0.0240 0.4226 -0.09358 2022 4 4 59673 0.0251 0.4243 -0.09399 2022 4 5 59674 0.0262 0.4259 -0.09423 2022 4 6 59675 0.0274 0.4275 -0.09427 2022 4 7 59676 0.0286 0.4291 -0.09417 2022 4 8 59677 0.0298 0.4307 -0.09408 2022 4 9 59678 0.0310 0.4322 -0.09400 2022 4 10 59679 0.0323 0.4338 -0.09397 2022 4 11 59680 0.0336 0.4353 -0.09409 2022 4 12 59681 0.0350 0.4368 -0.09444 2022 4 13 59682 0.0363 0.4383 -0.09507 2022 4 14 59683 0.0377 0.4397 -0.09598 2022 4 15 59684 0.0391 0.4412 -0.09707 2022 4 16 59685 0.0405 0.4426 -0.09828 2022 4 17 59686 0.0420 0.4440 -0.09948 2022 4 18 59687 0.0435 0.4454 -0.10050 2022 4 19 59688 0.0450 0.4467 -0.10131 2022 4 20 59689 0.0465 0.4480 -0.10181 2022 4 21 59690 0.0481 0.4493 -0.10202 2022 4 22 59691 0.0497 0.4506 -0.10206 2022 4 23 59692 0.0513 0.4519 -0.10201 2022 4 24 59693 0.0529 0.4531 -0.10199 2022 4 25 59694 0.0545 0.4543 -0.10208 2022 4 26 59695 0.0562 0.4555 -0.10230 2022 4 27 59696 0.0579 0.4566 -0.10268 2022 4 28 59697 0.0596 0.4578 -0.10319 2022 4 29 59698 0.0613 0.4589 -0.10369 2022 4 30 59699 0.0630 0.4600 -0.10410 2022 5 1 59700 0.0648 0.4610 -0.10438 2022 5 2 59701 0.0666 0.4620 -0.10446 2022 5 3 59702 0.0684 0.4630 -0.10428 2022 5 4 59703 0.0702 0.4640 -0.10387 2022 5 5 59704 0.0720 0.4649 -0.10333 2022 5 6 59705 0.0738 0.4659 -0.10272 2022 5 7 59706 0.0757 0.4667 -0.10205 2022 5 8 59707 0.0776 0.4676 -0.10140 2022 5 9 59708 0.0795 0.4684 -0.10084 2022 5 10 59709 0.0814 0.4692 -0.10046 2022 5 11 59710 0.0833 0.4700 -0.10029 2022 5 12 59711 0.0852 0.4707 -0.10037 2022 5 13 59712 0.0872 0.4714 -0.10069 2022 5 14 59713 0.0891 0.4721 -0.10107 2022 5 15 59714 0.0911 0.4728 -0.10141 2022 5 16 59715 0.0931 0.4734 -0.10158 2022 5 17 59716 0.0951 0.4740 -0.10148 2022 5 18 59717 0.0971 0.4745 -0.10109 2022 5 19 59718 0.0991 0.4751 -0.10052 2022 5 20 59719 0.1011 0.4756 -0.09994 2022 5 21 59720 0.1031 0.4760 -0.09945 2022 5 22 59721 0.1051 0.4765 -0.09911 2022 5 23 59722 0.1072 0.4769 -0.09897 2022 5 24 59723 0.1092 0.4773 -0.09905 2022 5 25 59724 0.1113 0.4776 -0.09921 2022 5 26 59725 0.1133 0.4779 -0.09932 2022 5 27 59726 0.1154 0.4782 -0.09934 2022 5 28 59727 0.1175 0.4784 -0.09919 2022 5 29 59728 0.1195 0.4786 -0.09880 2022 5 30 59729 0.1216 0.4788 -0.09818 2022 5 31 59730 0.1237 0.4790 -0.09739 2022 6 1 59731 0.1258 0.4791 -0.09644 2022 6 2 59732 0.1279 0.4792 -0.09541 2022 6 3 59733 0.1299 0.4792 -0.09436 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) 59342 -105.44 0.47 -9.59 0.10 59343 -105.70 0.47 -9.31 0.11 59344 -106.03 0.47 -9.14 0.11 59345 -106.21 0.47 -9.25 0.11 59346 -106.18 0.47 -9.59 0.11 59347 -106.04 0.47 -9.94 0.11 59348 -105.97 0.47 -10.14 0.11 59349 -106.05 0.32 -10.23 0.16 59350 -106.24 0.32 -10.31 0.16 59351 -106.36 0.57 -10.39 0.10 59352 -106.20 0.57 -10.37 0.10 59353 -105.85 0.57 -10.26 0.10 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59342 0.205 0.187 -0.100 0.105 59343 0.202 0.187 -0.111 0.108 59344 0.197 0.187 -0.118 0.108 59345 0.192 0.188 -0.123 0.115 59346 0.190 0.188 -0.125 0.115 59347 0.189 0.188 -0.125 0.115 59348 0.191 0.188 -0.124 0.115 59349 0.195 0.128 -0.121 0.160 59350 0.200 0.128 -0.118 0.160 59351 0.206 0.225 -0.114 0.098 59352 0.213 0.225 -0.109 0.098 59353 0.220 0.225 -0.103 0.098 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).