********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 8 April 2021 Vol. XXXIV No. 014 ______________________________________________________________________ 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 4 2 59306 0.08226 .00009 0.41255 .00009 -0.174489 0.000004 21 4 3 59307 0.08290 .00009 0.41333 .00009 -0.174556 0.000004 21 4 4 59308 0.08375 .00009 0.41395 .00009 -0.174473 0.000004 21 4 5 59309 0.08483 .00009 0.41460 .00009 -0.174394 0.000007 21 4 6 59310 0.08582 .00009 0.41562 .00009 -0.174435 0.000009 21 4 7 59311 0.08663 .00009 0.41677 .00009 -0.174612 0.000010 21 4 8 59312 0.08730 .00009 0.41782 .00009 -0.174899 0.000014 IERS Final Values MJD x y UT1-UTC " " s 21 2 2 59247 0.0495 0.3417 -0.16756 21 2 3 59248 0.0493 0.3432 -0.16819 21 2 4 59249 0.0492 0.3444 -0.16880 21 2 5 59250 0.0493 0.3456 -0.16928 21 2 6 59251 0.0492 0.3470 -0.16961 21 2 7 59252 0.0491 0.3484 -0.16969 21 2 8 59253 0.0493 0.3499 -0.16949 21 2 9 59254 0.0499 0.3513 -0.16934 21 2 10 59255 0.0506 0.3526 -0.16924 21 2 11 59256 0.0512 0.3538 -0.16927 21 2 12 59257 0.0514 0.3549 -0.16941 21 2 13 59258 0.0515 0.3557 -0.16970 21 2 14 59259 0.0519 0.3568 -0.17013 21 2 15 59260 0.0517 0.3581 -0.17065 21 2 16 59261 0.0509 0.3593 -0.17120 21 2 17 59262 0.0503 0.3603 -0.17167 21 2 18 59263 0.0504 0.3612 -0.17195 21 2 19 59264 0.0509 0.3620 -0.17202 21 2 20 59265 0.0515 0.3631 -0.17190 21 2 21 59266 0.0515 0.3639 -0.17158 21 2 22 59267 0.0507 0.3646 -0.17108 21 2 23 59268 0.0498 0.3653 -0.17047 21 2 24 59269 0.0494 0.3656 -0.16985 21 2 25 59270 0.0498 0.3661 -0.16935 21 2 26 59271 0.0503 0.3671 -0.16905 21 2 27 59272 0.0504 0.3685 -0.16904 21 2 28 59273 0.0505 0.3702 -0.16931 21 3 1 59274 0.0506 0.3720 -0.16979 _______________________________________________________________________ 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 = 0.1282 - 0.0681 cos A + 0.0893 sin A + 0.0222 cos C - 0.0263 sin C y = 0.3598 + 0.0810 cos A + 0.0641 sin A - 0.0263 cos C - 0.0222 sin C UT1-UTC = -0.1450 + 0.00025 (MJD - 59320) - (UT2-UT1) where A = 2*pi*(MJD-59312)/365.25 and C = 2*pi*(MJD-59312)/435. TAI-UTC(MJD 59313) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59312)**0.80 S t = 0.00025 (MJD-59312)**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 4 9 59313 0.0880 0.4188 -0.17527 2021 4 10 59314 0.0886 0.4196 -0.17570 2021 4 11 59315 0.0894 0.4203 -0.17617 2021 4 12 59316 0.0902 0.4209 -0.17663 2021 4 13 59317 0.0912 0.4216 -0.17705 2021 4 14 59318 0.0922 0.4223 -0.17738 2021 4 15 59319 0.0933 0.4231 -0.17760 2021 4 16 59320 0.0944 0.4240 -0.17766 2021 4 17 59321 0.0954 0.4248 -0.17758 2021 4 18 59322 0.0965 0.4256 -0.17737 2021 4 19 59323 0.0975 0.4264 -0.17707 2021 4 20 59324 0.0987 0.4271 -0.17678 2021 4 21 59325 0.0999 0.4278 -0.17663 2021 4 22 59326 0.1011 0.4284 -0.17667 2021 4 23 59327 0.1023 0.4291 -0.17693 2021 4 24 59328 0.1036 0.4297 -0.17744 2021 4 25 59329 0.1049 0.4303 -0.17812 2021 4 26 59330 0.1062 0.4309 -0.17889 2021 4 27 59331 0.1075 0.4314 -0.17958 2021 4 28 59332 0.1089 0.4319 -0.18007 2021 4 29 59333 0.1103 0.4323 -0.18027 2021 4 30 59334 0.1117 0.4328 -0.18016 2021 5 1 59335 0.1131 0.4333 -0.17982 2021 5 2 59336 0.1145 0.4337 -0.17936 2021 5 3 59337 0.1160 0.4341 -0.17890 2021 5 4 59338 0.1174 0.4345 -0.17852 2021 5 5 59339 0.1188 0.4349 -0.17826 2021 5 6 59340 0.1203 0.4352 -0.17812 2021 5 7 59341 0.1218 0.4355 -0.17808 2021 5 8 59342 0.1232 0.4358 -0.17810 2021 5 9 59343 0.1247 0.4360 -0.17810 2021 5 10 59344 0.1262 0.4363 -0.17804 2021 5 11 59345 0.1277 0.4365 -0.17785 2021 5 12 59346 0.1292 0.4367 -0.17751 2021 5 13 59347 0.1307 0.4368 -0.17699 2021 5 14 59348 0.1323 0.4370 -0.17631 2021 5 15 59349 0.1338 0.4371 -0.17551 2021 5 16 59350 0.1353 0.4372 -0.17467 2021 5 17 59351 0.1368 0.4373 -0.17383 2021 5 18 59352 0.1384 0.4374 -0.17309 2021 5 19 59353 0.1399 0.4374 -0.17250 2021 5 20 59354 0.1415 0.4374 -0.17213 2021 5 21 59355 0.1430 0.4374 -0.17202 2021 5 22 59356 0.1446 0.4374 -0.17214 2021 5 23 59357 0.1461 0.4373 -0.17243 2021 5 24 59358 0.1477 0.4372 -0.17276 2021 5 25 59359 0.1492 0.4371 -0.17298 2021 5 26 59360 0.1508 0.4370 -0.17294 2021 5 27 59361 0.1523 0.4368 -0.17261 2021 5 28 59362 0.1539 0.4367 -0.17202 2021 5 29 59363 0.1555 0.4364 -0.17125 2021 5 30 59364 0.1570 0.4362 -0.17044 2021 5 31 59365 0.1586 0.4360 -0.16968 2021 6 1 59366 0.1601 0.4357 -0.16903 2021 6 2 59367 0.1617 0.4354 -0.16851 2021 6 3 59368 0.1632 0.4351 -0.16808 2021 6 4 59369 0.1648 0.4347 -0.16769 2021 6 5 59370 0.1663 0.4343 -0.16729 2021 6 6 59371 0.1678 0.4339 -0.16684 2021 6 7 59372 0.1694 0.4335 -0.16627 2021 6 8 59373 0.1709 0.4331 -0.16555 2021 6 9 59374 0.1724 0.4326 -0.16467 2021 6 10 59375 0.1739 0.4321 -0.16362 2021 6 11 59376 0.1755 0.4316 -0.16244 2021 6 12 59377 0.1770 0.4310 -0.16116 2021 6 13 59378 0.1785 0.4304 -0.15986 2021 6 14 59379 0.1799 0.4298 -0.15861 2021 6 15 59380 0.1814 0.4292 -0.15747 2021 6 16 59381 0.1829 0.4286 -0.15651 2021 6 17 59382 0.1844 0.4279 -0.15576 2021 6 18 59383 0.1858 0.4272 -0.15523 2021 6 19 59384 0.1873 0.4265 -0.15486 2021 6 20 59385 0.1887 0.4258 -0.15458 2021 6 21 59386 0.1901 0.4250 -0.15426 2021 6 22 59387 0.1915 0.4242 -0.15377 2021 6 23 59388 0.1929 0.4234 -0.15304 2021 6 24 59389 0.1943 0.4226 -0.15204 2021 6 25 59390 0.1957 0.4218 -0.15086 2021 6 26 59391 0.1970 0.4209 -0.14961 2021 6 27 59392 0.1983 0.4200 -0.14840 2021 6 28 59393 0.1997 0.4191 -0.14731 2021 6 29 59394 0.2010 0.4181 -0.14636 2021 6 30 59395 0.2023 0.4172 -0.14554 2021 7 1 59396 0.2036 0.4162 -0.14479 2021 7 2 59397 0.2048 0.4152 -0.14405 2021 7 3 59398 0.2061 0.4142 -0.14327 2021 7 4 59399 0.2073 0.4131 -0.14239 2021 7 5 59400 0.2085 0.4121 -0.14138 2021 7 6 59401 0.2097 0.4110 -0.14022 2021 7 7 59402 0.2109 0.4099 -0.13889 2021 7 8 59403 0.2120 0.4088 -0.13744 2021 7 9 59404 0.2132 0.4077 -0.13588 2021 7 10 59405 0.2143 0.4065 -0.13430 2021 7 11 59406 0.2154 0.4053 -0.13275 2021 7 12 59407 0.2165 0.4041 -0.13133 2021 7 13 59408 0.2175 0.4029 -0.13008 2021 7 14 59409 0.2186 0.4017 -0.12906 2021 7 15 59410 0.2196 0.4004 -0.12825 2021 7 16 59411 0.2206 0.3992 -0.12761 2021 7 17 59412 0.2215 0.3979 -0.12706 2021 7 18 59413 0.2225 0.3966 -0.12650 2021 7 19 59414 0.2234 0.3953 -0.12581 2021 7 20 59415 0.2243 0.3940 -0.12492 2021 7 21 59416 0.2252 0.3926 -0.12379 2021 7 22 59417 0.2260 0.3913 -0.12247 2021 7 23 59418 0.2269 0.3899 -0.12105 2021 7 24 59419 0.2277 0.3885 -0.11964 2021 7 25 59420 0.2284 0.3871 -0.11836 2021 7 26 59421 0.2292 0.3857 -0.11722 2021 7 27 59422 0.2299 0.3843 -0.11625 2021 7 28 59423 0.2306 0.3829 -0.11540 2021 7 29 59424 0.2313 0.3814 -0.11461 2021 7 30 59425 0.2320 0.3800 -0.11379 2021 7 31 59426 0.2326 0.3785 -0.11290 2021 8 1 59427 0.2332 0.3770 -0.11190 2021 8 2 59428 0.2338 0.3755 -0.11075 2021 8 3 59429 0.2343 0.3740 -0.10944 2021 8 4 59430 0.2348 0.3725 -0.10801 2021 8 5 59431 0.2353 0.3710 -0.10648 2021 8 6 59432 0.2358 0.3694 -0.10492 2021 8 7 59433 0.2362 0.3679 -0.10339 2021 8 8 59434 0.2366 0.3663 -0.10198 2021 8 9 59435 0.2370 0.3648 -0.10075 2021 8 10 59436 0.2373 0.3632 -0.09976 2021 8 11 59437 0.2376 0.3617 -0.09901 2021 8 12 59438 0.2379 0.3601 -0.09847 2021 8 13 59439 0.2382 0.3585 -0.09803 2021 8 14 59440 0.2384 0.3569 -0.09760 2021 8 15 59441 0.2386 0.3553 -0.09707 2021 8 16 59442 0.2388 0.3537 -0.09636 2021 8 17 59443 0.2389 0.3521 -0.09544 2021 8 18 59444 0.2391 0.3505 -0.09433 2021 8 19 59445 0.2391 0.3489 -0.09312 2021 8 20 59446 0.2392 0.3473 -0.09191 2021 8 21 59447 0.2392 0.3457 -0.09081 2021 8 22 59448 0.2392 0.3441 -0.08989 2021 8 23 59449 0.2392 0.3425 -0.08916 2021 8 24 59450 0.2391 0.3408 -0.08860 2021 8 25 59451 0.2390 0.3392 -0.08814 2021 8 26 59452 0.2389 0.3376 -0.08771 2021 8 27 59453 0.2387 0.3360 -0.08723 2021 8 28 59454 0.2385 0.3344 -0.08664 2021 8 29 59455 0.2383 0.3328 -0.08592 2021 8 30 59456 0.2381 0.3311 -0.08506 2021 8 31 59457 0.2378 0.3295 -0.08406 2021 9 1 59458 0.2375 0.3279 -0.08296 2021 9 2 59459 0.2371 0.3263 -0.08181 2021 9 3 59460 0.2368 0.3247 -0.08069 2021 9 4 59461 0.2364 0.3231 -0.07966 2021 9 5 59462 0.2359 0.3215 -0.07881 2021 9 6 59463 0.2355 0.3199 -0.07821 2021 9 7 59464 0.2350 0.3184 -0.07787 2021 9 8 59465 0.2344 0.3168 -0.07778 2021 9 9 59466 0.2339 0.3152 -0.07786 2021 9 10 59467 0.2333 0.3137 -0.07797 2021 9 11 59468 0.2327 0.3121 -0.07800 2021 9 12 59469 0.2320 0.3106 -0.07784 2021 9 13 59470 0.2314 0.3090 -0.07747 2021 9 14 59471 0.2307 0.3075 -0.07688 2021 9 15 59472 0.2299 0.3060 -0.07618 2021 9 16 59473 0.2292 0.3045 -0.07545 2021 9 17 59474 0.2284 0.3030 -0.07481 2021 9 18 59475 0.2276 0.3015 -0.07433 2021 9 19 59476 0.2267 0.3000 -0.07405 2021 9 20 59477 0.2258 0.2985 -0.07396 2021 9 21 59478 0.2249 0.2971 -0.07401 2021 9 22 59479 0.2240 0.2957 -0.07411 2021 9 23 59480 0.2231 0.2942 -0.07419 2021 9 24 59481 0.2221 0.2928 -0.07419 2021 9 25 59482 0.2210 0.2914 -0.07405 2021 9 26 59483 0.2200 0.2900 -0.07376 2021 9 27 59484 0.2189 0.2887 -0.07331 2021 9 28 59485 0.2178 0.2873 -0.07275 2021 9 29 59486 0.2167 0.2860 -0.07211 2021 9 30 59487 0.2156 0.2846 -0.07146 2021 10 1 59488 0.2144 0.2833 -0.07087 2021 10 2 59489 0.2132 0.2820 -0.07043 2021 10 3 59490 0.2120 0.2808 -0.07021 2021 10 4 59491 0.2107 0.2795 -0.07025 2021 10 5 59492 0.2094 0.2783 -0.07056 2021 10 6 59493 0.2081 0.2770 -0.07109 2021 10 7 59494 0.2068 0.2758 -0.07173 2021 10 8 59495 0.2055 0.2747 -0.07232 2021 10 9 59496 0.2041 0.2735 -0.07275 2021 10 10 59497 0.2027 0.2723 -0.07293 2021 10 11 59498 0.2013 0.2712 -0.07287 2021 10 12 59499 0.1998 0.2701 -0.07264 2021 10 13 59500 0.1984 0.2690 -0.07235 2021 10 14 59501 0.1969 0.2680 -0.07213 2021 10 15 59502 0.1954 0.2669 -0.07205 2021 10 16 59503 0.1939 0.2659 -0.07216 2021 10 17 59504 0.1923 0.2649 -0.07246 2021 10 18 59505 0.1907 0.2639 -0.07290 2021 10 19 59506 0.1892 0.2630 -0.07342 2021 10 20 59507 0.1875 0.2621 -0.07392 2021 10 21 59508 0.1859 0.2612 -0.07433 2021 10 22 59509 0.1843 0.2603 -0.07459 2021 10 23 59510 0.1826 0.2594 -0.07466 2021 10 24 59511 0.1809 0.2586 -0.07453 2021 10 25 59512 0.1792 0.2578 -0.07420 2021 10 26 59513 0.1775 0.2570 -0.07373 2021 10 27 59514 0.1758 0.2562 -0.07317 2021 10 28 59515 0.1741 0.2555 -0.07259 2021 10 29 59516 0.1723 0.2548 -0.07208 2021 10 30 59517 0.1705 0.2541 -0.07172 2021 10 31 59518 0.1687 0.2535 -0.07158 2021 11 1 59519 0.1669 0.2528 -0.07170 2021 11 2 59520 0.1651 0.2522 -0.07206 2021 11 3 59521 0.1633 0.2517 -0.07262 2021 11 4 59522 0.1614 0.2511 -0.07323 2021 11 5 59523 0.1596 0.2506 -0.07378 2021 11 6 59524 0.1577 0.2501 -0.07414 2021 11 7 59525 0.1558 0.2496 -0.07427 2021 11 8 59526 0.1539 0.2492 -0.07417 2021 11 9 59527 0.1520 0.2488 -0.07393 2021 11 10 59528 0.1501 0.2484 -0.07366 2021 11 11 59529 0.1482 0.2480 -0.07347 2021 11 12 59530 0.1463 0.2477 -0.07342 2021 11 13 59531 0.1443 0.2474 -0.07354 2021 11 14 59532 0.1424 0.2472 -0.07382 2021 11 15 59533 0.1404 0.2469 -0.07419 2021 11 16 59534 0.1385 0.2467 -0.07459 2021 11 17 59535 0.1365 0.2465 -0.07490 2021 11 18 59536 0.1346 0.2464 -0.07506 2021 11 19 59537 0.1326 0.2463 -0.07504 2021 11 20 59538 0.1306 0.2462 -0.07482 2021 11 21 59539 0.1286 0.2461 -0.07434 2021 11 22 59540 0.1267 0.2461 -0.07373 2021 11 23 59541 0.1247 0.2461 -0.07302 2021 11 24 59542 0.1227 0.2461 -0.07229 2021 11 25 59543 0.1207 0.2461 -0.07157 2021 11 26 59544 0.1187 0.2462 -0.07099 2021 11 27 59545 0.1167 0.2463 -0.07059 2021 11 28 59546 0.1147 0.2465 -0.07037 2021 11 29 59547 0.1127 0.2467 -0.07038 2021 11 30 59548 0.1107 0.2469 -0.07059 2021 12 1 59549 0.1088 0.2471 -0.07085 2021 12 2 59550 0.1068 0.2474 -0.07108 2021 12 3 59551 0.1048 0.2477 -0.07121 2021 12 4 59552 0.1028 0.2480 -0.07118 2021 12 5 59553 0.1008 0.2483 -0.07092 2021 12 6 59554 0.0989 0.2487 -0.07055 2021 12 7 59555 0.0969 0.2491 -0.07019 2021 12 8 59556 0.0950 0.2496 -0.06989 2021 12 9 59557 0.0930 0.2500 -0.06973 2021 12 10 59558 0.0911 0.2505 -0.06972 2021 12 11 59559 0.0891 0.2511 -0.06981 2021 12 12 59560 0.0872 0.2516 -0.06991 2021 12 13 59561 0.0853 0.2522 -0.07010 2021 12 14 59562 0.0834 0.2528 -0.07026 2021 12 15 59563 0.0814 0.2535 -0.07029 2021 12 16 59564 0.0796 0.2542 -0.07020 2021 12 17 59565 0.0777 0.2549 -0.07005 2021 12 18 59566 0.0758 0.2556 -0.06979 2021 12 19 59567 0.0739 0.2564 -0.06938 2021 12 20 59568 0.0721 0.2571 -0.06895 2021 12 21 59569 0.0703 0.2580 -0.06854 2021 12 22 59570 0.0684 0.2588 -0.06823 2021 12 23 59571 0.0666 0.2597 -0.06809 2021 12 24 59572 0.0648 0.2606 -0.06809 2021 12 25 59573 0.0630 0.2615 -0.06829 2021 12 26 59574 0.0613 0.2625 -0.06870 2021 12 27 59575 0.0595 0.2634 -0.06925 2021 12 28 59576 0.0578 0.2644 -0.06994 2021 12 29 59577 0.0561 0.2655 -0.07060 2021 12 30 59578 0.0544 0.2665 -0.07110 2021 12 31 59579 0.0527 0.2676 -0.07136 2022 1 1 59580 0.0510 0.2687 -0.07127 2022 1 2 59581 0.0494 0.2699 -0.07091 2022 1 3 59582 0.0478 0.2710 -0.07040 2022 1 4 59583 0.0462 0.2722 -0.06985 2022 1 5 59584 0.0446 0.2734 -0.06946 2022 1 6 59585 0.0430 0.2746 -0.06931 2022 1 7 59586 0.0415 0.2759 -0.06933 2022 1 8 59587 0.0400 0.2772 -0.06947 2022 1 9 59588 0.0385 0.2785 -0.06967 2022 1 10 59589 0.0370 0.2798 -0.06981 2022 1 11 59590 0.0355 0.2812 -0.06980 2022 1 12 59591 0.0341 0.2825 -0.06960 2022 1 13 59592 0.0327 0.2839 -0.06924 2022 1 14 59593 0.0313 0.2853 -0.06872 2022 1 15 59594 0.0299 0.2868 -0.06800 2022 1 16 59595 0.0286 0.2882 -0.06714 2022 1 17 59596 0.0273 0.2897 -0.06620 2022 1 18 59597 0.0260 0.2912 -0.06530 2022 1 19 59598 0.0248 0.2927 -0.06450 2022 1 20 59599 0.0235 0.2943 -0.06391 2022 1 21 59600 0.0223 0.2958 -0.06362 2022 1 22 59601 0.0211 0.2974 -0.06354 2022 1 23 59602 0.0200 0.2990 -0.06368 2022 1 24 59603 0.0189 0.3006 -0.06396 2022 1 25 59604 0.0178 0.3022 -0.06429 2022 1 26 59605 0.0167 0.3038 -0.06452 2022 1 27 59606 0.0157 0.3055 -0.06459 2022 1 28 59607 0.0147 0.3072 -0.06449 2022 1 29 59608 0.0137 0.3089 -0.06421 2022 1 30 59609 0.0127 0.3106 -0.06380 2022 1 31 59610 0.0118 0.3123 -0.06342 2022 2 1 59611 0.0109 0.3140 -0.06324 2022 2 2 59612 0.0101 0.3158 -0.06327 2022 2 3 59613 0.0093 0.3175 -0.06347 2022 2 4 59614 0.0085 0.3193 -0.06385 2022 2 5 59615 0.0077 0.3211 -0.06427 2022 2 6 59616 0.0070 0.3229 -0.06464 2022 2 7 59617 0.0063 0.3247 -0.06489 2022 2 8 59618 0.0056 0.3265 -0.06502 2022 2 9 59619 0.0050 0.3284 -0.06498 2022 2 10 59620 0.0044 0.3302 -0.06479 2022 2 11 59621 0.0038 0.3321 -0.06444 2022 2 12 59622 0.0033 0.3339 -0.06411 2022 2 13 59623 0.0027 0.3358 -0.06370 2022 2 14 59624 0.0023 0.3377 -0.06333 2022 2 15 59625 0.0018 0.3396 -0.06307 2022 2 16 59626 0.0014 0.3414 -0.06292 2022 2 17 59627 0.0011 0.3433 -0.06292 2022 2 18 59628 0.0007 0.3453 -0.06310 2022 2 19 59629 0.0004 0.3472 -0.06357 2022 2 20 59630 0.0002 0.3491 -0.06431 2022 2 21 59631 -0.0001 0.3510 -0.06512 2022 2 22 59632 -0.0003 0.3529 -0.06599 2022 2 23 59633 -0.0004 0.3548 -0.06672 2022 2 24 59634 -0.0006 0.3568 -0.06726 2022 2 25 59635 -0.0007 0.3587 -0.06759 2022 2 26 59636 -0.0007 0.3606 -0.06776 2022 2 27 59637 -0.0008 0.3626 -0.06790 2022 2 28 59638 -0.0008 0.3645 -0.06818 2022 3 1 59639 -0.0007 0.3665 -0.06867 2022 3 2 59640 -0.0006 0.3684 -0.06939 2022 3 3 59641 -0.0005 0.3703 -0.07032 2022 3 4 59642 -0.0004 0.3723 -0.07138 2022 3 5 59643 -0.0002 0.3742 -0.07252 2022 3 6 59644 0.0000 0.3761 -0.07362 2022 3 7 59645 0.0003 0.3781 -0.07463 2022 3 8 59646 0.0006 0.3800 -0.07544 2022 3 9 59647 0.0009 0.3819 -0.07603 2022 3 10 59648 0.0012 0.3838 -0.07647 2022 3 11 59649 0.0016 0.3857 -0.07681 2022 3 12 59650 0.0020 0.3876 -0.07710 2022 3 13 59651 0.0025 0.3895 -0.07740 2022 3 14 59652 0.0030 0.3914 -0.07776 2022 3 15 59653 0.0035 0.3933 -0.07831 2022 3 16 59654 0.0041 0.3952 -0.07899 2022 3 17 59655 0.0047 0.3971 -0.07986 2022 3 18 59656 0.0053 0.3990 -0.08095 2022 3 19 59657 0.0060 0.4008 -0.08220 2022 3 20 59658 0.0066 0.4027 -0.08359 2022 3 21 59659 0.0074 0.4045 -0.08495 2022 3 22 59660 0.0081 0.4063 -0.08612 2022 3 23 59661 0.0089 0.4081 -0.08706 2022 3 24 59662 0.0098 0.4099 -0.08778 2022 3 25 59663 0.0106 0.4117 -0.08822 2022 3 26 59664 0.0115 0.4135 -0.08856 2022 3 27 59665 0.0124 0.4153 -0.08892 2022 3 28 59666 0.0134 0.4170 -0.08936 2022 3 29 59667 0.0144 0.4188 -0.09001 2022 3 30 59668 0.0154 0.4205 -0.09090 2022 3 31 59669 0.0164 0.4222 -0.09196 2022 4 1 59670 0.0175 0.4239 -0.09307 2022 4 2 59671 0.0186 0.4256 -0.09412 2022 4 3 59672 0.0198 0.4272 -0.09503 2022 4 4 59673 0.0209 0.4289 -0.09577 2022 4 5 59674 0.0221 0.4305 -0.09628 2022 4 6 59675 0.0234 0.4321 -0.09652 2022 4 7 59676 0.0246 0.4337 -0.09654 2022 4 8 59677 0.0259 0.4353 -0.09643 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) 59290 -107.20 0.68 -7.88 0.04 59291 -107.16 0.68 -7.98 0.04 59292 -107.10 0.68 -8.04 0.04 59293 -107.09 0.58 -8.14 0.04 59294 -107.09 0.58 -8.30 0.04 59295 -106.96 0.57 -8.47 0.08 59296 -106.64 0.57 -8.60 0.09 59297 -106.37 0.57 -8.71 0.09 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 59247 -108.3 -6.2 59248 -108.6 -6.2 59249 -109.0 -6.1 59250 -109.3 -6.0 59251 -109.5 -5.9 59252 -109.5 -5.9 59253 -109.2 -5.9 59254 -108.9 -6.0 59255 -108.5 -6.2 59256 -108.3 -6.4 59257 -108.1 -6.7 59258 -108.1 -6.8 59259 -108.1 -6.7 59260 -108.2 -6.7 59261 -108.4 -6.6 59262 -108.5 -6.6 59263 -108.7 -6.6 59264 -108.7 -6.5 59265 -108.6 -6.5 59266 -108.5 -6.7 59267 -108.4 -6.9 59268 -108.3 -7.2 59269 -108.3 -7.6 59270 -108.3 -7.8 59271 -108.1 -7.9 59272 -107.7 -7.8 59273 -107.2 -7.5 59274 -107.0 -7.3 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59290 0.283 0.269 0.007 0.043 59291 0.264 0.269 0.019 0.043 59292 0.244 0.269 0.029 0.043 59293 0.230 0.230 0.040 0.036 59294 0.222 0.230 0.051 0.036 59295 0.219 0.227 0.064 0.077 59296 0.220 0.226 0.076 0.093 59297 0.223 0.226 0.089 0.093 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 59247 0.12 0.03 59248 0.11 0.06 59249 0.12 0.10 59250 0.13 0.13 59251 0.14 0.16 59252 0.16 0.18 59253 0.17 0.20 59254 0.19 0.22 59255 0.22 0.17 59256 0.26 0.10 59257 0.30 0.02 59258 0.31 0.02 59259 0.30 0.06 59260 0.30 0.10 59261 0.29 0.13 59262 0.28 0.17 59263 0.25 0.20 59264 0.20 0.23 59265 0.20 0.19 59266 0.21 0.12 59267 0.22 0.05 59268 0.23 -0.02 59269 0.21 -0.05 59270 0.17 -0.06 59271 0.14 -0.07 59272 0.15 -0.05 59273 0.18 -0.03 59274 0.20 -0.00 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).