********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 6 May 2021 Vol. XXXIV No. 018 ______________________________________________________________________ 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 30 59334 0.10540 .00009 0.43526 .00009 -0.183366 0.000018 21 5 1 59335 0.10680 .00009 0.43578 .00009 -0.183292 0.000021 21 5 2 59336 0.10822 .00009 0.43649 .00009 -0.183064 0.000022 21 5 3 59337 0.10981 .00009 0.43743 .00009 -0.182774 0.000020 21 5 4 59338 0.11156 .00009 0.43844 .00009 -0.182519 0.000022 21 5 5 59339 0.11336 .00009 0.43939 .00009 -0.182393 0.000021 21 5 6 59340 0.11524 .00009 0.44032 .00009 -0.182419 0.000020 IERS Final Values MJD x y UT1-UTC " " s 21 3 2 59275 0.0507 0.3738 -0.17039 21 3 3 59276 0.0506 0.3753 -0.17103 21 3 4 59277 0.0511 0.3765 -0.17155 21 3 5 59278 0.0522 0.3779 -0.17188 21 3 6 59279 0.0534 0.3794 -0.17199 21 3 7 59280 0.0546 0.3808 -0.17187 21 3 8 59281 0.0562 0.3824 -0.17161 21 3 9 59282 0.0577 0.3839 -0.17132 21 3 10 59283 0.0587 0.3853 -0.17110 21 3 11 59284 0.0596 0.3863 -0.17100 21 3 12 59285 0.0605 0.3877 -0.17106 21 3 13 59286 0.0617 0.3893 -0.17124 21 3 14 59287 0.0630 0.3910 -0.17156 21 3 15 59288 0.0643 0.3925 -0.17195 21 3 16 59289 0.0654 0.3942 -0.17223 21 3 17 59290 0.0657 0.3959 -0.17240 21 3 18 59291 0.0659 0.3975 -0.17242 21 3 19 59292 0.0662 0.3989 -0.17229 21 3 20 59293 0.0666 0.4004 -0.17203 21 3 21 59294 0.0675 0.4018 -0.17169 21 3 22 59295 0.0688 0.4035 -0.17131 21 3 23 59296 0.0700 0.4051 -0.17096 21 3 24 59297 0.0715 0.4065 -0.17068 21 3 25 59298 0.0728 0.4079 -0.17053 21 3 26 59299 0.0737 0.4091 -0.17059 21 3 27 59300 0.0749 0.4097 -0.17092 21 3 28 59301 0.0766 0.4098 -0.17149 21 3 29 59302 0.0782 0.4101 -0.17225 21 3 30 59303 0.0796 0.4105 -0.17304 21 3 31 59304 0.0807 0.4111 -0.17373 21 4 1 59305 0.0816 0.4117 -0.17422 _______________________________________________________________________ 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 = 0.1263 - 0.0223 cos A + 0.1093 sin A + 0.0123 cos C - 0.0302 sin C y = 0.3669 + 0.1009 cos A + 0.0227 sin A - 0.0302 cos C - 0.0123 sin C UT1-UTC = -0.1453 + 0.00026 (MJD - 59348) - (UT2-UT1) where A = 2*pi*(MJD-59340)/365.25 and C = 2*pi*(MJD-59340)/435. TAI-UTC(MJD 59341) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59340)**0.80 S t = 0.00025 (MJD-59340)**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 7 59341 0.1169 0.4412 -0.18258 2021 5 8 59342 0.1187 0.4420 -0.18283 2021 5 9 59343 0.1203 0.4426 -0.18307 2021 5 10 59344 0.1219 0.4430 -0.18324 2021 5 11 59345 0.1235 0.4433 -0.18332 2021 5 12 59346 0.1252 0.4436 -0.18330 2021 5 13 59347 0.1269 0.4437 -0.18315 2021 5 14 59348 0.1287 0.4439 -0.18286 2021 5 15 59349 0.1305 0.4440 -0.18244 2021 5 16 59350 0.1322 0.4441 -0.18189 2021 5 17 59351 0.1339 0.4443 -0.18128 2021 5 18 59352 0.1356 0.4444 -0.18071 2021 5 19 59353 0.1373 0.4445 -0.18024 2021 5 20 59354 0.1390 0.4446 -0.17994 2021 5 21 59355 0.1406 0.4446 -0.17989 2021 5 22 59356 0.1422 0.4445 -0.18009 2021 5 23 59357 0.1438 0.4444 -0.18047 2021 5 24 59358 0.1454 0.4443 -0.18089 2021 5 25 59359 0.1470 0.4442 -0.18119 2021 5 26 59360 0.1486 0.4440 -0.18127 2021 5 27 59361 0.1501 0.4438 -0.18107 2021 5 28 59362 0.1517 0.4435 -0.18062 2021 5 29 59363 0.1533 0.4433 -0.18001 2021 5 30 59364 0.1549 0.4430 -0.17934 2021 5 31 59365 0.1566 0.4428 -0.17873 2021 6 1 59366 0.1582 0.4425 -0.17822 2021 6 2 59367 0.1597 0.4422 -0.17783 2021 6 3 59368 0.1613 0.4419 -0.17752 2021 6 4 59369 0.1629 0.4415 -0.17725 2021 6 5 59370 0.1645 0.4411 -0.17696 2021 6 6 59371 0.1660 0.4407 -0.17658 2021 6 7 59372 0.1676 0.4403 -0.17607 2021 6 8 59373 0.1692 0.4398 -0.17539 2021 6 9 59374 0.1708 0.4394 -0.17453 2021 6 10 59375 0.1723 0.4388 -0.17350 2021 6 11 59376 0.1739 0.4383 -0.17230 2021 6 12 59377 0.1755 0.4378 -0.17100 2021 6 13 59378 0.1770 0.4372 -0.16965 2021 6 14 59379 0.1786 0.4366 -0.16835 2021 6 15 59380 0.1801 0.4359 -0.16715 2021 6 16 59381 0.1816 0.4353 -0.16613 2021 6 17 59382 0.1832 0.4346 -0.16532 2021 6 18 59383 0.1847 0.4339 -0.16471 2021 6 19 59384 0.1862 0.4332 -0.16428 2021 6 20 59385 0.1877 0.4324 -0.16392 2021 6 21 59386 0.1891 0.4317 -0.16351 2021 6 22 59387 0.1906 0.4308 -0.16292 2021 6 23 59388 0.1920 0.4300 -0.16207 2021 6 24 59389 0.1935 0.4292 -0.16096 2021 6 25 59390 0.1949 0.4283 -0.15965 2021 6 26 59391 0.1963 0.4274 -0.15828 2021 6 27 59392 0.1977 0.4265 -0.15696 2021 6 28 59393 0.1991 0.4255 -0.15578 2021 6 29 59394 0.2005 0.4246 -0.15477 2021 6 30 59395 0.2018 0.4236 -0.15389 2021 7 1 59396 0.2032 0.4226 -0.15309 2021 7 2 59397 0.2045 0.4215 -0.15232 2021 7 3 59398 0.2058 0.4205 -0.15151 2021 7 4 59399 0.2070 0.4194 -0.15061 2021 7 5 59400 0.2083 0.4183 -0.14958 2021 7 6 59401 0.2096 0.4172 -0.14839 2021 7 7 59402 0.2108 0.4161 -0.14704 2021 7 8 59403 0.2120 0.4149 -0.14555 2021 7 9 59404 0.2132 0.4137 -0.14396 2021 7 10 59405 0.2143 0.4125 -0.14233 2021 7 11 59406 0.2155 0.4113 -0.14074 2021 7 12 59407 0.2166 0.4101 -0.13925 2021 7 13 59408 0.2177 0.4088 -0.13795 2021 7 14 59409 0.2188 0.4076 -0.13686 2021 7 15 59410 0.2198 0.4063 -0.13598 2021 7 16 59411 0.2209 0.4050 -0.13527 2021 7 17 59412 0.2219 0.4037 -0.13465 2021 7 18 59413 0.2229 0.4023 -0.13402 2021 7 19 59414 0.2239 0.4010 -0.13327 2021 7 20 59415 0.2248 0.3996 -0.13231 2021 7 21 59416 0.2257 0.3982 -0.13113 2021 7 22 59417 0.2266 0.3968 -0.12976 2021 7 23 59418 0.2275 0.3954 -0.12830 2021 7 24 59419 0.2283 0.3939 -0.12686 2021 7 25 59420 0.2292 0.3925 -0.12555 2021 7 26 59421 0.2300 0.3910 -0.12441 2021 7 27 59422 0.2307 0.3896 -0.12344 2021 7 28 59423 0.2315 0.3881 -0.12259 2021 7 29 59424 0.2322 0.3866 -0.12179 2021 7 30 59425 0.2329 0.3851 -0.12098 2021 7 31 59426 0.2335 0.3835 -0.12009 2021 8 1 59427 0.2342 0.3820 -0.11909 2021 8 2 59428 0.2348 0.3804 -0.11795 2021 8 3 59429 0.2354 0.3789 -0.11666 2021 8 4 59430 0.2359 0.3773 -0.11524 2021 8 5 59431 0.2365 0.3757 -0.11374 2021 8 6 59432 0.2370 0.3742 -0.11220 2021 8 7 59433 0.2374 0.3726 -0.11069 2021 8 8 59434 0.2379 0.3710 -0.10931 2021 8 9 59435 0.2383 0.3693 -0.10811 2021 8 10 59436 0.2387 0.3677 -0.10714 2021 8 11 59437 0.2390 0.3661 -0.10642 2021 8 12 59438 0.2393 0.3645 -0.10589 2021 8 13 59439 0.2396 0.3628 -0.10548 2021 8 14 59440 0.2399 0.3612 -0.10508 2021 8 15 59441 0.2401 0.3595 -0.10457 2021 8 16 59442 0.2403 0.3579 -0.10389 2021 8 17 59443 0.2405 0.3562 -0.10299 2021 8 18 59444 0.2407 0.3545 -0.10192 2021 8 19 59445 0.2408 0.3529 -0.10074 2021 8 20 59446 0.2409 0.3512 -0.09956 2021 8 21 59447 0.2409 0.3495 -0.09850 2021 8 22 59448 0.2409 0.3478 -0.09761 2021 8 23 59449 0.2409 0.3462 -0.09691 2021 8 24 59450 0.2409 0.3445 -0.09638 2021 8 25 59451 0.2408 0.3428 -0.09595 2021 8 26 59452 0.2407 0.3411 -0.09555 2021 8 27 59453 0.2406 0.3394 -0.09509 2021 8 28 59454 0.2404 0.3378 -0.09453 2021 8 29 59455 0.2402 0.3361 -0.09384 2021 8 30 59456 0.2400 0.3344 -0.09300 2021 8 31 59457 0.2397 0.3327 -0.09202 2021 9 1 59458 0.2395 0.3310 -0.09095 2021 9 2 59459 0.2391 0.3294 -0.08983 2021 9 3 59460 0.2388 0.3277 -0.08872 2021 9 4 59461 0.2384 0.3261 -0.08772 2021 9 5 59462 0.2380 0.3244 -0.08689 2021 9 6 59463 0.2376 0.3227 -0.08630 2021 9 7 59464 0.2371 0.3211 -0.08598 2021 9 8 59465 0.2366 0.3195 -0.08590 2021 9 9 59466 0.2361 0.3178 -0.08598 2021 9 10 59467 0.2355 0.3162 -0.08610 2021 9 11 59468 0.2349 0.3146 -0.08612 2021 9 12 59469 0.2343 0.3130 -0.08596 2021 9 13 59470 0.2336 0.3114 -0.08557 2021 9 14 59471 0.2330 0.3098 -0.08498 2021 9 15 59472 0.2322 0.3082 -0.08425 2021 9 16 59473 0.2315 0.3066 -0.08350 2021 9 17 59474 0.2307 0.3051 -0.08282 2021 9 18 59475 0.2299 0.3035 -0.08230 2021 9 19 59476 0.2291 0.3020 -0.08198 2021 9 20 59477 0.2283 0.3004 -0.08185 2021 9 21 59478 0.2274 0.2989 -0.08184 2021 9 22 59479 0.2265 0.2974 -0.08189 2021 9 23 59480 0.2255 0.2959 -0.08193 2021 9 24 59481 0.2245 0.2944 -0.08188 2021 9 25 59482 0.2236 0.2930 -0.08169 2021 9 26 59483 0.2225 0.2915 -0.08135 2021 9 27 59484 0.2215 0.2901 -0.08086 2021 9 28 59485 0.2204 0.2887 -0.08025 2021 9 29 59486 0.2193 0.2873 -0.07957 2021 9 30 59487 0.2182 0.2859 -0.07887 2021 10 1 59488 0.2170 0.2845 -0.07825 2021 10 2 59489 0.2158 0.2831 -0.07776 2021 10 3 59490 0.2146 0.2818 -0.07749 2021 10 4 59491 0.2134 0.2805 -0.07749 2021 10 5 59492 0.2121 0.2792 -0.07776 2021 10 6 59493 0.2108 0.2779 -0.07825 2021 10 7 59494 0.2095 0.2766 -0.07884 2021 10 8 59495 0.2082 0.2754 -0.07938 2021 10 9 59496 0.2068 0.2742 -0.07976 2021 10 10 59497 0.2054 0.2730 -0.07988 2021 10 11 59498 0.2040 0.2718 -0.07975 2021 10 12 59499 0.2026 0.2706 -0.07944 2021 10 13 59500 0.2011 0.2695 -0.07906 2021 10 14 59501 0.1997 0.2683 -0.07872 2021 10 15 59502 0.1982 0.2672 -0.07850 2021 10 16 59503 0.1967 0.2662 -0.07847 2021 10 17 59504 0.1951 0.2651 -0.07861 2021 10 18 59505 0.1936 0.2641 -0.07888 2021 10 19 59506 0.1920 0.2631 -0.07923 2021 10 20 59507 0.1904 0.2621 -0.07958 2021 10 21 59508 0.1888 0.2611 -0.07986 2021 10 22 59509 0.1872 0.2602 -0.08001 2021 10 23 59510 0.1855 0.2593 -0.08001 2021 10 24 59511 0.1838 0.2584 -0.07983 2021 10 25 59512 0.1821 0.2575 -0.07951 2021 10 26 59513 0.1804 0.2567 -0.07908 2021 10 27 59514 0.1787 0.2559 -0.07862 2021 10 28 59515 0.1770 0.2551 -0.07818 2021 10 29 59516 0.1752 0.2543 -0.07784 2021 10 30 59517 0.1735 0.2536 -0.07767 2021 10 31 59518 0.1717 0.2529 -0.07774 2021 11 1 59519 0.1699 0.2522 -0.07807 2021 11 2 59520 0.1681 0.2515 -0.07865 2021 11 3 59521 0.1662 0.2509 -0.07940 2021 11 4 59522 0.1644 0.2503 -0.08019 2021 11 5 59523 0.1625 0.2497 -0.08086 2021 11 6 59524 0.1607 0.2492 -0.08132 2021 11 7 59525 0.1588 0.2487 -0.08150 2021 11 8 59526 0.1569 0.2482 -0.08145 2021 11 9 59527 0.1550 0.2477 -0.08128 2021 11 10 59528 0.1531 0.2473 -0.08112 2021 11 11 59529 0.1512 0.2469 -0.08106 2021 11 12 59530 0.1493 0.2465 -0.08116 2021 11 13 59531 0.1474 0.2462 -0.08144 2021 11 14 59532 0.1454 0.2459 -0.08185 2021 11 15 59533 0.1435 0.2456 -0.08233 2021 11 16 59534 0.1415 0.2453 -0.08282 2021 11 17 59535 0.1396 0.2451 -0.08324 2021 11 18 59536 0.1376 0.2449 -0.08354 2021 11 19 59537 0.1356 0.2447 -0.08366 2021 11 20 59538 0.1337 0.2446 -0.08359 2021 11 21 59539 0.1317 0.2445 -0.08335 2021 11 22 59540 0.1297 0.2444 -0.08296 2021 11 23 59541 0.1277 0.2444 -0.08249 2021 11 24 59542 0.1257 0.2443 -0.08202 2021 11 25 59543 0.1237 0.2444 -0.08161 2021 11 26 59544 0.1217 0.2444 -0.08133 2021 11 27 59545 0.1197 0.2445 -0.08125 2021 11 28 59546 0.1178 0.2446 -0.08140 2021 11 29 59547 0.1158 0.2447 -0.08179 2021 11 30 59548 0.1138 0.2449 -0.08237 2021 12 1 59549 0.1118 0.2451 -0.08307 2021 12 2 59550 0.1098 0.2453 -0.08375 2021 12 3 59551 0.1078 0.2455 -0.08427 2021 12 4 59552 0.1058 0.2458 -0.08455 2021 12 5 59553 0.1039 0.2461 -0.08456 2021 12 6 59554 0.1019 0.2465 -0.08436 2021 12 7 59555 0.0999 0.2469 -0.08404 2021 12 8 59556 0.0980 0.2473 -0.08375 2021 12 9 59557 0.0960 0.2477 -0.08356 2021 12 10 59558 0.0940 0.2482 -0.08350 2021 12 11 59559 0.0921 0.2487 -0.08351 2021 12 12 59560 0.0902 0.2492 -0.08356 2021 12 13 59561 0.0882 0.2498 -0.08359 2021 12 14 59562 0.0863 0.2503 -0.08353 2021 12 15 59563 0.0844 0.2510 -0.08333 2021 12 16 59564 0.0825 0.2516 -0.08300 2021 12 17 59565 0.0806 0.2523 -0.08248 2021 12 18 59566 0.0787 0.2530 -0.08174 2021 12 19 59567 0.0769 0.2537 -0.08091 2021 12 20 59568 0.0750 0.2545 -0.08002 2021 12 21 59569 0.0732 0.2553 -0.07910 2021 12 22 59570 0.0713 0.2561 -0.07822 2021 12 23 59571 0.0695 0.2569 -0.07741 2021 12 24 59572 0.0677 0.2578 -0.07669 2021 12 25 59573 0.0659 0.2587 -0.07614 2021 12 26 59574 0.0641 0.2596 -0.07585 2021 12 27 59575 0.0624 0.2606 -0.07575 2021 12 28 59576 0.0606 0.2615 -0.07581 2021 12 29 59577 0.0589 0.2625 -0.07590 2021 12 30 59578 0.0572 0.2636 -0.07603 2021 12 31 59579 0.0555 0.2646 -0.07610 2022 1 1 59580 0.0538 0.2657 -0.07591 2022 1 2 59581 0.0522 0.2668 -0.07552 2022 1 3 59582 0.0505 0.2680 -0.07499 2022 1 4 59583 0.0489 0.2691 -0.07447 2022 1 5 59584 0.0473 0.2703 -0.07406 2022 1 6 59585 0.0457 0.2715 -0.07383 2022 1 7 59586 0.0442 0.2728 -0.07379 2022 1 8 59587 0.0426 0.2740 -0.07384 2022 1 9 59588 0.0411 0.2753 -0.07397 2022 1 10 59589 0.0396 0.2766 -0.07407 2022 1 11 59590 0.0382 0.2780 -0.07409 2022 1 12 59591 0.0367 0.2793 -0.07393 2022 1 13 59592 0.0353 0.2807 -0.07356 2022 1 14 59593 0.0339 0.2821 -0.07301 2022 1 15 59594 0.0325 0.2835 -0.07229 2022 1 16 59595 0.0312 0.2849 -0.07138 2022 1 17 59596 0.0298 0.2864 -0.07044 2022 1 18 59597 0.0285 0.2879 -0.06952 2022 1 19 59598 0.0272 0.2894 -0.06870 2022 1 20 59599 0.0260 0.2909 -0.06798 2022 1 21 59600 0.0248 0.2925 -0.06749 2022 1 22 59601 0.0236 0.2940 -0.06720 2022 1 23 59602 0.0224 0.2956 -0.06705 2022 1 24 59603 0.0212 0.2972 -0.06700 2022 1 25 59604 0.0201 0.2988 -0.06701 2022 1 26 59605 0.0190 0.3004 -0.06691 2022 1 27 59606 0.0180 0.3021 -0.06665 2022 1 28 59607 0.0170 0.3037 -0.06626 2022 1 29 59608 0.0160 0.3054 -0.06576 2022 1 30 59609 0.0150 0.3071 -0.06518 2022 1 31 59610 0.0140 0.3088 -0.06468 2022 2 1 59611 0.0131 0.3106 -0.06438 2022 2 2 59612 0.0122 0.3123 -0.06428 2022 2 3 59613 0.0114 0.3141 -0.06439 2022 2 4 59614 0.0106 0.3158 -0.06466 2022 2 5 59615 0.0098 0.3176 -0.06496 2022 2 6 59616 0.0090 0.3194 -0.06519 2022 2 7 59617 0.0083 0.3212 -0.06540 2022 2 8 59618 0.0076 0.3230 -0.06549 2022 2 9 59619 0.0069 0.3248 -0.06540 2022 2 10 59620 0.0063 0.3267 -0.06517 2022 2 11 59621 0.0057 0.3285 -0.06491 2022 2 12 59622 0.0051 0.3304 -0.06459 2022 2 13 59623 0.0046 0.3323 -0.06423 2022 2 14 59624 0.0041 0.3341 -0.06396 2022 2 15 59625 0.0036 0.3360 -0.06383 2022 2 16 59626 0.0032 0.3379 -0.06392 2022 2 17 59627 0.0028 0.3398 -0.06430 2022 2 18 59628 0.0024 0.3417 -0.06487 2022 2 19 59629 0.0021 0.3436 -0.06565 2022 2 20 59630 0.0018 0.3455 -0.06655 2022 2 21 59631 0.0015 0.3474 -0.06746 2022 2 22 59632 0.0013 0.3494 -0.06832 2022 2 23 59633 0.0011 0.3513 -0.06899 2022 2 24 59634 0.0009 0.3532 -0.06938 2022 2 25 59635 0.0008 0.3551 -0.06954 2022 2 26 59636 0.0007 0.3571 -0.06946 2022 2 27 59637 0.0006 0.3590 -0.06927 2022 2 28 59638 0.0006 0.3610 -0.06913 2022 3 1 59639 0.0006 0.3629 -0.06910 2022 3 2 59640 0.0006 0.3648 -0.06931 2022 3 3 59641 0.0007 0.3668 -0.06978 2022 3 4 59642 0.0008 0.3687 -0.07039 2022 3 5 59643 0.0009 0.3706 -0.07104 2022 3 6 59644 0.0011 0.3726 -0.07165 2022 3 7 59645 0.0013 0.3745 -0.07213 2022 3 8 59646 0.0016 0.3764 -0.07238 2022 3 9 59647 0.0018 0.3784 -0.07240 2022 3 10 59648 0.0022 0.3803 -0.07227 2022 3 11 59649 0.0025 0.3822 -0.07200 2022 3 12 59650 0.0029 0.3841 -0.07162 2022 3 13 59651 0.0033 0.3860 -0.07118 2022 3 14 59652 0.0038 0.3879 -0.07077 2022 3 15 59653 0.0042 0.3898 -0.07051 2022 3 16 59654 0.0048 0.3917 -0.07045 2022 3 17 59655 0.0053 0.3936 -0.07067 2022 3 18 59656 0.0059 0.3955 -0.07121 2022 3 19 59657 0.0065 0.3973 -0.07191 2022 3 20 59658 0.0071 0.3992 -0.07273 2022 3 21 59659 0.0078 0.4010 -0.07352 2022 3 22 59660 0.0085 0.4028 -0.07417 2022 3 23 59661 0.0093 0.4047 -0.07456 2022 3 24 59662 0.0101 0.4065 -0.07472 2022 3 25 59663 0.0109 0.4083 -0.07474 2022 3 26 59664 0.0117 0.4101 -0.07470 2022 3 27 59665 0.0126 0.4118 -0.07471 2022 3 28 59666 0.0135 0.4136 -0.07488 2022 3 29 59667 0.0145 0.4153 -0.07533 2022 3 30 59668 0.0154 0.4171 -0.07600 2022 3 31 59669 0.0164 0.4188 -0.07678 2022 4 1 59670 0.0175 0.4205 -0.07764 2022 4 2 59671 0.0185 0.4222 -0.07844 2022 4 3 59672 0.0196 0.4239 -0.07909 2022 4 4 59673 0.0207 0.4255 -0.07955 2022 4 5 59674 0.0219 0.4272 -0.07982 2022 4 6 59675 0.0231 0.4288 -0.07990 2022 4 7 59676 0.0243 0.4304 -0.07985 2022 4 8 59677 0.0255 0.4320 -0.07968 2022 4 9 59678 0.0268 0.4335 -0.07958 2022 4 10 59679 0.0281 0.4351 -0.07950 2022 4 11 59680 0.0294 0.4366 -0.07952 2022 4 12 59681 0.0307 0.4381 -0.07975 2022 4 13 59682 0.0321 0.4396 -0.08012 2022 4 14 59683 0.0335 0.4411 -0.08066 2022 4 15 59684 0.0349 0.4425 -0.08136 2022 4 16 59685 0.0364 0.4439 -0.08226 2022 4 17 59686 0.0379 0.4453 -0.08330 2022 4 18 59687 0.0394 0.4467 -0.08422 2022 4 19 59688 0.0409 0.4481 -0.08504 2022 4 20 59689 0.0424 0.4494 -0.08560 2022 4 21 59690 0.0440 0.4507 -0.08595 2022 4 22 59691 0.0456 0.4520 -0.08618 2022 4 23 59692 0.0472 0.4533 -0.08636 2022 4 24 59693 0.0489 0.4545 -0.08667 2022 4 25 59694 0.0506 0.4557 -0.08720 2022 4 26 59695 0.0522 0.4569 -0.08793 2022 4 27 59696 0.0540 0.4580 -0.08882 2022 4 28 59697 0.0557 0.4592 -0.08978 2022 4 29 59698 0.0574 0.4603 -0.09074 2022 4 30 59699 0.0592 0.4614 -0.09164 2022 5 1 59700 0.0610 0.4624 -0.09240 2022 5 2 59701 0.0628 0.4635 -0.09302 2022 5 3 59702 0.0646 0.4645 -0.09340 2022 5 4 59703 0.0665 0.4654 -0.09355 2022 5 5 59704 0.0683 0.4664 -0.09359 2022 5 6 59705 0.0702 0.4673 -0.09358 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) 59321 -105.80 0.62 -9.47 0.04 59322 -105.99 0.59 -9.68 0.05 59323 -106.00 0.59 -9.86 0.05 59324 -105.71 0.30 -9.90 0.08 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 59275 -107.3 -7.3 59276 -107.9 -7.5 59277 -108.3 -7.6 59278 -108.5 -7.6 59279 -108.5 -7.5 59280 -108.3 -7.5 59281 -108.1 -7.5 59282 -107.7 -7.7 59283 -107.4 -7.8 59284 -107.2 -8.0 59285 -107.2 -8.1 59286 -107.3 -8.0 59287 -107.3 -7.9 59288 -107.3 -7.7 59289 -107.2 -7.8 59290 -107.2 -7.9 59291 -107.2 -8.0 59292 -107.1 -8.1 59293 -107.1 -8.2 59294 -107.1 -8.3 59295 -106.9 -8.5 59296 -106.6 -8.6 59297 -106.4 -8.8 59298 -106.3 -9.0 59299 -106.2 -9.2 59300 -105.9 -9.3 59301 -105.5 -9.0 59302 -105.4 -8.7 59303 -105.8 -8.6 59304 -106.3 -8.9 59305 -106.6 -9.1 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59321 0.220 0.247 -0.050 0.038 59322 0.195 0.233 -0.058 0.047 59323 0.168 0.233 -0.066 0.047 59324 0.139 0.118 -0.075 0.081 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 59275 0.23 0.02 59276 0.21 0.04 59277 0.19 0.06 59278 0.16 0.07 59279 0.16 0.05 59280 0.17 0.01 59281 0.18 -0.03 59282 0.19 -0.07 59283 0.20 -0.07 59284 0.20 -0.06 59285 0.20 -0.05 59286 0.21 -0.03 59287 0.23 0.00 59288 0.26 0.03 59289 0.28 0.06 59290 0.27 0.06 59291 0.25 0.05 59292 0.23 0.05 59293 0.23 0.05 59294 0.22 0.06 59295 0.22 0.07 59296 0.22 0.08 59297 0.21 0.09 59298 0.22 0.07 59299 0.24 0.03 59300 0.25 0.02 59301 0.27 0.02 59302 0.29 0.02 59303 0.30 0.02 59304 0.34 -0.01 59305 0.39 -0.04 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).