********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 25 March 2021 Vol. XXXIV No. 012 ______________________________________________________________________ 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 3 19 59292 0.06621 .00009 0.39894 .00009 -0.172262 0.000007 21 3 20 59293 0.06668 .00009 0.40039 .00009 -0.172008 0.000008 21 3 21 59294 0.06755 .00009 0.40187 .00009 -0.171668 0.000008 21 3 22 59295 0.06875 .00009 0.40349 .00009 -0.171309 0.000008 21 3 23 59296 0.07007 .00009 0.40507 .00009 -0.170965 0.000009 21 3 24 59297 0.07147 .00009 0.40651 .00009 -0.170679 0.000010 21 3 25 59298 0.07276 .00009 0.40792 .00009 -0.170541 0.000015 _______________________________________________________________________ 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 = 0.1279 - 0.0869 cos A + 0.0695 sin A + 0.0257 cos C - 0.0210 sin C y = 0.3637 + 0.0625 cos A + 0.0806 sin A - 0.0210 cos C - 0.0257 sin C UT1-UTC = -0.1466 + 0.00023 (MJD - 59306) - (UT2-UT1) where A = 2*pi*(MJD-59298)/365.25 and C = 2*pi*(MJD-59298)/435. TAI-UTC(MJD 59299) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59298)**0.80 S t = 0.00025 (MJD-59298)**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 3 26 59299 0.0739 0.4093 -0.17062 2021 3 27 59300 0.0748 0.4106 -0.17094 2021 3 28 59301 0.0756 0.4118 -0.17151 2021 3 29 59302 0.0764 0.4129 -0.17225 2021 3 30 59303 0.0773 0.4140 -0.17303 2021 3 31 59304 0.0782 0.4151 -0.17370 2021 4 1 59305 0.0791 0.4160 -0.17415 2021 4 2 59306 0.0800 0.4170 -0.17434 2021 4 3 59307 0.0809 0.4180 -0.17428 2021 4 4 59308 0.0818 0.4189 -0.17404 2021 4 5 59309 0.0828 0.4198 -0.17373 2021 4 6 59310 0.0838 0.4206 -0.17347 2021 4 7 59311 0.0849 0.4214 -0.17334 2021 4 8 59312 0.0859 0.4222 -0.17336 2021 4 9 59313 0.0870 0.4230 -0.17350 2021 4 10 59314 0.0880 0.4238 -0.17373 2021 4 11 59315 0.0891 0.4246 -0.17400 2021 4 12 59316 0.0901 0.4253 -0.17427 2021 4 13 59317 0.0912 0.4260 -0.17449 2021 4 14 59318 0.0923 0.4267 -0.17460 2021 4 15 59319 0.0934 0.4274 -0.17457 2021 4 16 59320 0.0945 0.4281 -0.17439 2021 4 17 59321 0.0958 0.4287 -0.17409 2021 4 18 59322 0.0970 0.4293 -0.17368 2021 4 19 59323 0.0982 0.4300 -0.17321 2021 4 20 59324 0.0995 0.4306 -0.17276 2021 4 21 59325 0.1008 0.4312 -0.17241 2021 4 22 59326 0.1021 0.4318 -0.17223 2021 4 23 59327 0.1034 0.4323 -0.17231 2021 4 24 59328 0.1047 0.4329 -0.17268 2021 4 25 59329 0.1061 0.4334 -0.17331 2021 4 26 59330 0.1074 0.4339 -0.17407 2021 4 27 59331 0.1088 0.4344 -0.17483 2021 4 28 59332 0.1102 0.4349 -0.17541 2021 4 29 59333 0.1116 0.4353 -0.17573 2021 4 30 59334 0.1130 0.4357 -0.17577 2021 5 1 59335 0.1145 0.4361 -0.17561 2021 5 2 59336 0.1159 0.4365 -0.17535 2021 5 3 59337 0.1174 0.4369 -0.17509 2021 5 4 59338 0.1189 0.4372 -0.17491 2021 5 5 59339 0.1204 0.4376 -0.17484 2021 5 6 59340 0.1219 0.4379 -0.17488 2021 5 7 59341 0.1234 0.4382 -0.17501 2021 5 8 59342 0.1249 0.4384 -0.17518 2021 5 9 59343 0.1264 0.4387 -0.17532 2021 5 10 59344 0.1279 0.4389 -0.17540 2021 5 11 59345 0.1295 0.4391 -0.17535 2021 5 12 59346 0.1310 0.4392 -0.17515 2021 5 13 59347 0.1326 0.4394 -0.17479 2021 5 14 59348 0.1341 0.4395 -0.17425 2021 5 15 59349 0.1357 0.4396 -0.17358 2021 5 16 59350 0.1373 0.4397 -0.17283 2021 5 17 59351 0.1388 0.4397 -0.17207 2021 5 18 59352 0.1404 0.4398 -0.17137 2021 5 19 59353 0.1420 0.4398 -0.17080 2021 5 20 59354 0.1436 0.4397 -0.17044 2021 5 21 59355 0.1451 0.4397 -0.17033 2021 5 22 59356 0.1467 0.4396 -0.17044 2021 5 23 59357 0.1483 0.4395 -0.17072 2021 5 24 59358 0.1499 0.4394 -0.17103 2021 5 25 59359 0.1515 0.4393 -0.17123 2021 5 26 59360 0.1531 0.4391 -0.17118 2021 5 27 59361 0.1547 0.4389 -0.17085 2021 5 28 59362 0.1563 0.4387 -0.17025 2021 5 29 59363 0.1579 0.4385 -0.16949 2021 5 30 59364 0.1594 0.4382 -0.16870 2021 5 31 59365 0.1610 0.4379 -0.16797 2021 6 1 59366 0.1626 0.4376 -0.16737 2021 6 2 59367 0.1642 0.4373 -0.16688 2021 6 3 59368 0.1658 0.4369 -0.16650 2021 6 4 59369 0.1673 0.4365 -0.16616 2021 6 5 59370 0.1689 0.4361 -0.16582 2021 6 6 59371 0.1705 0.4357 -0.16542 2021 6 7 59372 0.1720 0.4352 -0.16491 2021 6 8 59373 0.1736 0.4347 -0.16426 2021 6 9 59374 0.1751 0.4342 -0.16343 2021 6 10 59375 0.1767 0.4337 -0.16244 2021 6 11 59376 0.1782 0.4331 -0.16131 2021 6 12 59377 0.1797 0.4325 -0.16008 2021 6 13 59378 0.1813 0.4319 -0.15883 2021 6 14 59379 0.1828 0.4313 -0.15762 2021 6 15 59380 0.1843 0.4306 -0.15653 2021 6 16 59381 0.1858 0.4300 -0.15562 2021 6 17 59382 0.1872 0.4293 -0.15492 2021 6 18 59383 0.1887 0.4286 -0.15444 2021 6 19 59384 0.1902 0.4278 -0.15412 2021 6 20 59385 0.1916 0.4270 -0.15389 2021 6 21 59386 0.1930 0.4262 -0.15361 2021 6 22 59387 0.1945 0.4254 -0.15316 2021 6 23 59388 0.1959 0.4246 -0.15247 2021 6 24 59389 0.1973 0.4237 -0.15152 2021 6 25 59390 0.1987 0.4229 -0.15038 2021 6 26 59391 0.2000 0.4220 -0.14916 2021 6 27 59392 0.2014 0.4210 -0.14797 2021 6 28 59393 0.2027 0.4201 -0.14690 2021 6 29 59394 0.2040 0.4191 -0.14597 2021 6 30 59395 0.2053 0.4181 -0.14516 2021 7 1 59396 0.2066 0.4171 -0.14442 2021 7 2 59397 0.2079 0.4161 -0.14368 2021 7 3 59398 0.2092 0.4151 -0.14290 2021 7 4 59399 0.2104 0.4140 -0.14201 2021 7 5 59400 0.2116 0.4129 -0.14098 2021 7 6 59401 0.2128 0.4118 -0.13980 2021 7 7 59402 0.2140 0.4107 -0.13846 2021 7 8 59403 0.2152 0.4095 -0.13698 2021 7 9 59404 0.2163 0.4084 -0.13540 2021 7 10 59405 0.2174 0.4072 -0.13379 2021 7 11 59406 0.2185 0.4060 -0.13222 2021 7 12 59407 0.2196 0.4048 -0.13074 2021 7 13 59408 0.2207 0.4035 -0.12945 2021 7 14 59409 0.2217 0.4023 -0.12837 2021 7 15 59410 0.2227 0.4010 -0.12750 2021 7 16 59411 0.2237 0.3997 -0.12681 2021 7 17 59412 0.2247 0.3984 -0.12621 2021 7 18 59413 0.2256 0.3971 -0.12560 2021 7 19 59414 0.2265 0.3957 -0.12486 2021 7 20 59415 0.2274 0.3944 -0.12393 2021 7 21 59416 0.2283 0.3930 -0.12277 2021 7 22 59417 0.2292 0.3916 -0.12142 2021 7 23 59418 0.2300 0.3903 -0.11997 2021 7 24 59419 0.2308 0.3888 -0.11854 2021 7 25 59420 0.2316 0.3874 -0.11724 2021 7 26 59421 0.2323 0.3860 -0.11611 2021 7 27 59422 0.2330 0.3845 -0.11514 2021 7 28 59423 0.2337 0.3831 -0.11430 2021 7 29 59424 0.2344 0.3816 -0.11350 2021 7 30 59425 0.2351 0.3801 -0.11269 2021 7 31 59426 0.2357 0.3786 -0.11181 2021 8 1 59427 0.2363 0.3771 -0.11081 2021 8 2 59428 0.2368 0.3756 -0.10966 2021 8 3 59429 0.2374 0.3741 -0.10837 2021 8 4 59430 0.2379 0.3726 -0.10694 2021 8 5 59431 0.2383 0.3710 -0.10543 2021 8 6 59432 0.2388 0.3695 -0.10387 2021 8 7 59433 0.2392 0.3679 -0.10236 2021 8 8 59434 0.2396 0.3663 -0.10095 2021 8 9 59435 0.2400 0.3648 -0.09974 2021 8 10 59436 0.2403 0.3632 -0.09876 2021 8 11 59437 0.2406 0.3616 -0.09802 2021 8 12 59438 0.2409 0.3600 -0.09749 2021 8 13 59439 0.2411 0.3584 -0.09707 2021 8 14 59440 0.2414 0.3568 -0.09666 2021 8 15 59441 0.2415 0.3552 -0.09615 2021 8 16 59442 0.2417 0.3536 -0.09546 2021 8 17 59443 0.2418 0.3519 -0.09456 2021 8 18 59444 0.2419 0.3503 -0.09348 2021 8 19 59445 0.2420 0.3487 -0.09231 2021 8 20 59446 0.2420 0.3471 -0.09113 2021 8 21 59447 0.2420 0.3454 -0.09007 2021 8 22 59448 0.2420 0.3438 -0.08919 2021 8 23 59449 0.2420 0.3422 -0.08851 2021 8 24 59450 0.2419 0.3405 -0.08800 2021 8 25 59451 0.2418 0.3389 -0.08759 2021 8 26 59452 0.2416 0.3373 -0.08720 2021 8 27 59453 0.2414 0.3356 -0.08676 2021 8 28 59454 0.2412 0.3340 -0.08622 2021 8 29 59455 0.2410 0.3324 -0.08554 2021 8 30 59456 0.2407 0.3308 -0.08471 2021 8 31 59457 0.2404 0.3291 -0.08375 2021 9 1 59458 0.2401 0.3275 -0.08268 2021 9 2 59459 0.2397 0.3259 -0.08157 2021 9 3 59460 0.2393 0.3243 -0.08047 2021 9 4 59461 0.2389 0.3227 -0.07948 2021 9 5 59462 0.2384 0.3211 -0.07866 2021 9 6 59463 0.2380 0.3195 -0.07808 2021 9 7 59464 0.2374 0.3179 -0.07776 2021 9 8 59465 0.2369 0.3163 -0.07770 2021 9 9 59466 0.2363 0.3147 -0.07779 2021 9 10 59467 0.2357 0.3131 -0.07792 2021 9 11 59468 0.2351 0.3116 -0.07796 2021 9 12 59469 0.2344 0.3100 -0.07781 2021 9 13 59470 0.2337 0.3085 -0.07744 2021 9 14 59471 0.2330 0.3069 -0.07686 2021 9 15 59472 0.2322 0.3054 -0.07615 2021 9 16 59473 0.2314 0.3039 -0.07542 2021 9 17 59474 0.2306 0.3024 -0.07477 2021 9 18 59475 0.2298 0.3009 -0.07428 2021 9 19 59476 0.2289 0.2994 -0.07399 2021 9 20 59477 0.2280 0.2979 -0.07389 2021 9 21 59478 0.2271 0.2965 -0.07393 2021 9 22 59479 0.2261 0.2950 -0.07402 2021 9 23 59480 0.2251 0.2936 -0.07410 2021 9 24 59481 0.2241 0.2921 -0.07409 2021 9 25 59482 0.2231 0.2907 -0.07396 2021 9 26 59483 0.2220 0.2893 -0.07367 2021 9 27 59484 0.2209 0.2880 -0.07324 2021 9 28 59485 0.2198 0.2866 -0.07268 2021 9 29 59486 0.2186 0.2853 -0.07206 2021 9 30 59487 0.2175 0.2839 -0.07143 2021 10 1 59488 0.2163 0.2826 -0.07086 2021 10 2 59489 0.2150 0.2813 -0.07043 2021 10 3 59490 0.2138 0.2800 -0.07021 2021 10 4 59491 0.2125 0.2788 -0.07025 2021 10 5 59492 0.2112 0.2775 -0.07055 2021 10 6 59493 0.2099 0.2763 -0.07105 2021 10 7 59494 0.2085 0.2751 -0.07164 2021 10 8 59495 0.2071 0.2739 -0.07215 2021 10 9 59496 0.2057 0.2727 -0.07247 2021 10 10 59497 0.2043 0.2716 -0.07251 2021 10 11 59498 0.2029 0.2704 -0.07229 2021 10 12 59499 0.2014 0.2693 -0.07189 2021 10 13 59500 0.1999 0.2682 -0.07142 2021 10 14 59501 0.1984 0.2672 -0.07101 2021 10 15 59502 0.1969 0.2661 -0.07076 2021 10 16 59503 0.1953 0.2651 -0.07072 2021 10 17 59504 0.1937 0.2641 -0.07086 2021 10 18 59505 0.1921 0.2631 -0.07115 2021 10 19 59506 0.1905 0.2622 -0.07152 2021 10 20 59507 0.1889 0.2612 -0.07188 2021 10 21 59508 0.1872 0.2603 -0.07216 2021 10 22 59509 0.1855 0.2594 -0.07230 2021 10 23 59510 0.1839 0.2586 -0.07227 2021 10 24 59511 0.1821 0.2577 -0.07203 2021 10 25 59512 0.1804 0.2569 -0.07160 2021 10 26 59513 0.1787 0.2561 -0.07104 2021 10 27 59514 0.1769 0.2554 -0.07040 2021 10 28 59515 0.1751 0.2547 -0.06976 2021 10 29 59516 0.1734 0.2539 -0.06921 2021 10 30 59517 0.1716 0.2533 -0.06881 2021 10 31 59518 0.1697 0.2526 -0.06861 2021 11 1 59519 0.1679 0.2520 -0.06866 2021 11 2 59520 0.1661 0.2514 -0.06896 2021 11 3 59521 0.1642 0.2508 -0.06939 2021 11 4 59522 0.1623 0.2502 -0.06986 2021 11 5 59523 0.1604 0.2497 -0.07028 2021 11 6 59524 0.1585 0.2492 -0.07055 2021 11 7 59525 0.1566 0.2488 -0.07059 2021 11 8 59526 0.1547 0.2483 -0.07046 2021 11 9 59527 0.1528 0.2479 -0.07026 2021 11 10 59528 0.1509 0.2475 -0.07005 2021 11 11 59529 0.1489 0.2472 -0.06993 2021 11 12 59530 0.1470 0.2469 -0.06995 2021 11 13 59531 0.1450 0.2466 -0.07009 2021 11 14 59532 0.1430 0.2463 -0.07030 2021 11 15 59533 0.1411 0.2461 -0.07066 2021 11 16 59534 0.1391 0.2458 -0.07106 2021 11 17 59535 0.1371 0.2457 -0.07138 2021 11 18 59536 0.1351 0.2455 -0.07162 2021 11 19 59537 0.1331 0.2454 -0.07181 2021 11 20 59538 0.1311 0.2453 -0.07187 2021 11 21 59539 0.1291 0.2452 -0.07178 2021 11 22 59540 0.1271 0.2452 -0.07161 2021 11 23 59541 0.1251 0.2452 -0.07141 2021 11 24 59542 0.1231 0.2452 -0.07126 2021 11 25 59543 0.1210 0.2453 -0.07123 2021 11 26 59544 0.1190 0.2454 -0.07131 2021 11 27 59545 0.1170 0.2455 -0.07157 2021 11 28 59546 0.1150 0.2456 -0.07204 2021 11 29 59547 0.1130 0.2458 -0.07271 2021 11 30 59548 0.1110 0.2460 -0.07360 2021 12 1 59549 0.1090 0.2463 -0.07453 2021 12 2 59550 0.1070 0.2465 -0.07536 2021 12 3 59551 0.1050 0.2468 -0.07598 2021 12 4 59552 0.1030 0.2471 -0.07625 2021 12 5 59553 0.1010 0.2475 -0.07617 2021 12 6 59554 0.0990 0.2479 -0.07586 2021 12 7 59555 0.0970 0.2483 -0.07542 2021 12 8 59556 0.0950 0.2488 -0.07505 2021 12 9 59557 0.0930 0.2492 -0.07487 2021 12 10 59558 0.0911 0.2497 -0.07487 2021 12 11 59559 0.0891 0.2503 -0.07501 2021 12 12 59560 0.0872 0.2508 -0.07525 2021 12 13 59561 0.0852 0.2514 -0.07550 2021 12 14 59562 0.0833 0.2520 -0.07563 2021 12 15 59563 0.0814 0.2527 -0.07561 2021 12 16 59564 0.0795 0.2534 -0.07546 2021 12 17 59565 0.0776 0.2541 -0.07513 2021 12 18 59566 0.0757 0.2548 -0.07458 2021 12 19 59567 0.0738 0.2556 -0.07384 2021 12 20 59568 0.0719 0.2564 -0.07297 2021 12 21 59569 0.0701 0.2572 -0.07207 2021 12 22 59570 0.0682 0.2580 -0.07120 2021 12 23 59571 0.0664 0.2589 -0.07050 2021 12 24 59572 0.0646 0.2598 -0.07005 2021 12 25 59573 0.0628 0.2607 -0.06980 2021 12 26 59574 0.0610 0.2617 -0.06980 2021 12 27 59575 0.0592 0.2627 -0.07001 2021 12 28 59576 0.0575 0.2637 -0.07035 2021 12 29 59577 0.0558 0.2647 -0.07068 2021 12 30 59578 0.0541 0.2658 -0.07090 2021 12 31 59579 0.0524 0.2669 -0.07096 2022 1 1 59580 0.0507 0.2680 -0.07079 2022 1 2 59581 0.0490 0.2691 -0.07042 2022 1 3 59582 0.0474 0.2703 -0.06997 2022 1 4 59583 0.0458 0.2715 -0.06962 2022 1 5 59584 0.0442 0.2727 -0.06943 2022 1 6 59585 0.0426 0.2740 -0.06938 2022 1 7 59586 0.0411 0.2752 -0.06951 2022 1 8 59587 0.0395 0.2765 -0.06972 2022 1 9 59588 0.0380 0.2778 -0.06992 2022 1 10 59589 0.0365 0.2791 -0.07005 2022 1 11 59590 0.0351 0.2805 -0.07009 2022 1 12 59591 0.0336 0.2819 -0.06999 2022 1 13 59592 0.0322 0.2833 -0.06973 2022 1 14 59593 0.0308 0.2847 -0.06931 2022 1 15 59594 0.0294 0.2861 -0.06886 2022 1 16 59595 0.0281 0.2876 -0.06829 2022 1 17 59596 0.0268 0.2891 -0.06769 2022 1 18 59597 0.0255 0.2906 -0.06715 2022 1 19 59598 0.0242 0.2921 -0.06666 2022 1 20 59599 0.0230 0.2937 -0.06626 2022 1 21 59600 0.0218 0.2952 -0.06603 2022 1 22 59601 0.0206 0.2968 -0.06609 2022 1 23 59602 0.0194 0.2984 -0.06647 2022 1 24 59603 0.0183 0.3000 -0.06701 2022 1 25 59604 0.0172 0.3016 -0.06769 2022 1 26 59605 0.0162 0.3033 -0.06832 2022 1 27 59606 0.0151 0.3050 -0.06881 2022 1 28 59607 0.0141 0.3066 -0.06908 2022 1 29 59608 0.0131 0.3083 -0.06912 2022 1 30 59609 0.0122 0.3101 -0.06906 2022 1 31 59610 0.0113 0.3118 -0.06905 2022 2 1 59611 0.0104 0.3135 -0.06918 2022 2 2 59612 0.0095 0.3153 -0.06952 2022 2 3 59613 0.0087 0.3171 -0.07007 2022 2 4 59614 0.0079 0.3188 -0.07080 2022 2 5 59615 0.0071 0.3206 -0.07164 2022 2 6 59616 0.0064 0.3225 -0.07249 2022 2 7 59617 0.0057 0.3243 -0.07329 2022 2 8 59618 0.0050 0.3261 -0.07393 2022 2 9 59619 0.0044 0.3279 -0.07435 2022 2 10 59620 0.0038 0.3298 -0.07463 2022 2 11 59621 0.0032 0.3317 -0.07479 2022 2 12 59622 0.0027 0.3335 -0.07486 2022 2 13 59623 0.0022 0.3354 -0.07491 2022 2 14 59624 0.0017 0.3373 -0.07496 2022 2 15 59625 0.0013 0.3392 -0.07515 2022 2 16 59626 0.0009 0.3411 -0.07544 2022 2 17 59627 0.0005 0.3430 -0.07590 2022 2 18 59628 0.0002 0.3449 -0.07657 2022 2 19 59629 -0.0001 0.3468 -0.07744 2022 2 20 59630 -0.0004 0.3488 -0.07851 2022 2 21 59631 -0.0006 0.3507 -0.07964 2022 2 22 59632 -0.0008 0.3526 -0.08068 2022 2 23 59633 -0.0009 0.3546 -0.08156 2022 2 24 59634 -0.0011 0.3565 -0.08225 2022 2 25 59635 -0.0011 0.3584 -0.08262 2022 2 26 59636 -0.0012 0.3604 -0.08283 2022 2 27 59637 -0.0012 0.3623 -0.08300 2022 2 28 59638 -0.0012 0.3643 -0.08318 2022 3 1 59639 -0.0011 0.3662 -0.08355 2022 3 2 59640 -0.0011 0.3682 -0.08419 2022 3 3 59641 -0.0009 0.3701 -0.08504 2022 3 4 59642 -0.0008 0.3721 -0.08600 2022 3 5 59643 -0.0006 0.3740 -0.08696 2022 3 6 59644 -0.0004 0.3759 -0.08785 2022 3 7 59645 -0.0001 0.3779 -0.08859 2022 3 8 59646 0.0002 0.3798 -0.08913 2022 3 9 59647 0.0005 0.3818 -0.08940 2022 3 10 59648 0.0009 0.3837 -0.08945 2022 3 11 59649 0.0013 0.3856 -0.08935 2022 3 12 59650 0.0017 0.3875 -0.08917 2022 3 13 59651 0.0022 0.3894 -0.08897 2022 3 14 59652 0.0027 0.3913 -0.08882 2022 3 15 59653 0.0033 0.3932 -0.08882 2022 3 16 59654 0.0038 0.3951 -0.08911 2022 3 17 59655 0.0045 0.3970 -0.08966 2022 3 18 59656 0.0051 0.3989 -0.09044 2022 3 19 59657 0.0058 0.4008 -0.09137 2022 3 20 59658 0.0065 0.4026 -0.09238 2022 3 21 59659 0.0072 0.4045 -0.09344 2022 3 22 59660 0.0080 0.4063 -0.09444 2022 3 23 59661 0.0088 0.4081 -0.09530 2022 3 24 59662 0.0097 0.4099 -0.09596 2022 3 25 59663 0.0105 0.4117 -0.09646 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) 59276 -107.93 0.58 -7.49 0.05 59277 -108.33 0.58 -7.62 0.05 59278 -108.46 0.58 -7.61 0.05 59279 -108.40 0.51 -7.53 0.04 59280 -108.25 0.54 -7.47 0.05 59281 -108.01 0.54 -7.48 0.05 59282 -107.69 0.55 -7.58 0.05 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59276 0.192 0.230 0.012 0.053 59277 0.196 0.230 0.015 0.053 59278 0.200 0.230 0.014 0.053 59279 0.204 0.204 0.009 0.041 59280 0.207 0.216 0.000 0.046 59281 0.209 0.216 -0.012 0.046 59282 0.212 0.217 -0.025 0.046 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).