********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 1 April 2021 Vol. XXXIV No. 013 ______________________________________________________________________ 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 26 59299 0.07380 .00009 0.40896 .00009 -0.170591 0.000014 21 3 27 59300 0.07504 .00009 0.40959 .00009 -0.170922 0.000013 21 3 28 59301 0.07659 .00009 0.40987 .00009 -0.171479 0.000011 21 3 29 59302 0.07819 .00009 0.41014 .00009 -0.172243 0.000010 21 3 30 59303 0.07955 .00009 0.41052 .00009 -0.173054 0.000009 21 3 31 59304 0.08066 .00009 0.41108 .00009 -0.173732 0.000010 21 4 1 59305 0.08157 .00009 0.41181 .00009 -0.174206 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 = 0.1298 - 0.0781 cos A + 0.0800 sin A + 0.0242 cos C - 0.0238 sin C y = 0.3601 + 0.0724 cos A + 0.0730 sin A - 0.0238 cos C - 0.0242 sin C UT1-UTC = -0.1445 + 0.00024 (MJD - 59313) - (UT2-UT1) where A = 2*pi*(MJD-59305)/365.25 and C = 2*pi*(MJD-59305)/435. TAI-UTC(MJD 59306) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59305)**0.80 S t = 0.00025 (MJD-59305)**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 2 59306 0.0824 0.4126 -0.17442 2021 4 3 59307 0.0831 0.4134 -0.17441 2021 4 4 59308 0.0839 0.4141 -0.17425 2021 4 5 59309 0.0849 0.4147 -0.17407 2021 4 6 59310 0.0859 0.4153 -0.17396 2021 4 7 59311 0.0869 0.4159 -0.17398 2021 4 8 59312 0.0880 0.4166 -0.17415 2021 4 9 59313 0.0890 0.4174 -0.17446 2021 4 10 59314 0.0900 0.4181 -0.17487 2021 4 11 59315 0.0910 0.4188 -0.17531 2021 4 12 59316 0.0920 0.4195 -0.17572 2021 4 13 59317 0.0930 0.4202 -0.17602 2021 4 14 59318 0.0940 0.4208 -0.17618 2021 4 15 59319 0.0951 0.4215 -0.17616 2021 4 16 59320 0.0962 0.4222 -0.17597 2021 4 17 59321 0.0973 0.4230 -0.17563 2021 4 18 59322 0.0984 0.4237 -0.17519 2021 4 19 59323 0.0996 0.4244 -0.17470 2021 4 20 59324 0.1007 0.4251 -0.17422 2021 4 21 59325 0.1019 0.4258 -0.17383 2021 4 22 59326 0.1031 0.4264 -0.17363 2021 4 23 59327 0.1044 0.4270 -0.17368 2021 4 24 59328 0.1057 0.4275 -0.17401 2021 4 25 59329 0.1070 0.4281 -0.17457 2021 4 26 59330 0.1083 0.4287 -0.17525 2021 4 27 59331 0.1096 0.4292 -0.17589 2021 4 28 59332 0.1109 0.4297 -0.17635 2021 4 29 59333 0.1122 0.4302 -0.17652 2021 4 30 59334 0.1136 0.4307 -0.17639 2021 5 1 59335 0.1149 0.4311 -0.17604 2021 5 2 59336 0.1163 0.4315 -0.17556 2021 5 3 59337 0.1177 0.4319 -0.17509 2021 5 4 59338 0.1191 0.4323 -0.17472 2021 5 5 59339 0.1206 0.4326 -0.17448 2021 5 6 59340 0.1220 0.4329 -0.17439 2021 5 7 59341 0.1234 0.4332 -0.17442 2021 5 8 59342 0.1249 0.4335 -0.17452 2021 5 9 59343 0.1263 0.4337 -0.17464 2021 5 10 59344 0.1278 0.4340 -0.17471 2021 5 11 59345 0.1293 0.4342 -0.17468 2021 5 12 59346 0.1308 0.4343 -0.17450 2021 5 13 59347 0.1322 0.4345 -0.17416 2021 5 14 59348 0.1337 0.4346 -0.17366 2021 5 15 59349 0.1352 0.4347 -0.17303 2021 5 16 59350 0.1367 0.4348 -0.17232 2021 5 17 59351 0.1382 0.4349 -0.17158 2021 5 18 59352 0.1397 0.4349 -0.17091 2021 5 19 59353 0.1413 0.4349 -0.17036 2021 5 20 59354 0.1428 0.4349 -0.17001 2021 5 21 59355 0.1443 0.4349 -0.16989 2021 5 22 59356 0.1458 0.4348 -0.17000 2021 5 23 59357 0.1474 0.4348 -0.17027 2021 5 24 59358 0.1489 0.4347 -0.17056 2021 5 25 59359 0.1504 0.4345 -0.17074 2021 5 26 59360 0.1519 0.4344 -0.17067 2021 5 27 59361 0.1535 0.4342 -0.17031 2021 5 28 59362 0.1550 0.4340 -0.16969 2021 5 29 59363 0.1565 0.4338 -0.16891 2021 5 30 59364 0.1581 0.4336 -0.16808 2021 5 31 59365 0.1596 0.4333 -0.16732 2021 6 1 59366 0.1611 0.4330 -0.16667 2021 6 2 59367 0.1627 0.4327 -0.16616 2021 6 3 59368 0.1642 0.4323 -0.16573 2021 6 4 59369 0.1657 0.4320 -0.16536 2021 6 5 59370 0.1672 0.4316 -0.16499 2021 6 6 59371 0.1687 0.4312 -0.16455 2021 6 7 59372 0.1702 0.4307 -0.16400 2021 6 8 59373 0.1717 0.4303 -0.16331 2021 6 9 59374 0.1732 0.4298 -0.16246 2021 6 10 59375 0.1747 0.4293 -0.16144 2021 6 11 59376 0.1762 0.4288 -0.16029 2021 6 12 59377 0.1777 0.4282 -0.15905 2021 6 13 59378 0.1792 0.4276 -0.15778 2021 6 14 59379 0.1806 0.4270 -0.15656 2021 6 15 59380 0.1821 0.4264 -0.15546 2021 6 16 59381 0.1835 0.4258 -0.15453 2021 6 17 59382 0.1849 0.4251 -0.15382 2021 6 18 59383 0.1864 0.4244 -0.15332 2021 6 19 59384 0.1878 0.4237 -0.15299 2021 6 20 59385 0.1892 0.4229 -0.15273 2021 6 21 59386 0.1906 0.4222 -0.15243 2021 6 22 59387 0.1919 0.4214 -0.15196 2021 6 23 59388 0.1933 0.4206 -0.15123 2021 6 24 59389 0.1947 0.4198 -0.15026 2021 6 25 59390 0.1960 0.4189 -0.14909 2021 6 26 59391 0.1973 0.4180 -0.14785 2021 6 27 59392 0.1986 0.4172 -0.14665 2021 6 28 59393 0.1999 0.4162 -0.14557 2021 6 29 59394 0.2012 0.4153 -0.14464 2021 6 30 59395 0.2025 0.4144 -0.14383 2021 7 1 59396 0.2037 0.4134 -0.14310 2021 7 2 59397 0.2050 0.4124 -0.14239 2021 7 3 59398 0.2062 0.4114 -0.14163 2021 7 4 59399 0.2074 0.4103 -0.14078 2021 7 5 59400 0.2086 0.4093 -0.13980 2021 7 6 59401 0.2097 0.4082 -0.13866 2021 7 7 59402 0.2109 0.4071 -0.13735 2021 7 8 59403 0.2120 0.4060 -0.13591 2021 7 9 59404 0.2131 0.4049 -0.13436 2021 7 10 59405 0.2142 0.4037 -0.13277 2021 7 11 59406 0.2153 0.4026 -0.13122 2021 7 12 59407 0.2163 0.4014 -0.12978 2021 7 13 59408 0.2173 0.4002 -0.12851 2021 7 14 59409 0.2183 0.3990 -0.12745 2021 7 15 59410 0.2193 0.3977 -0.12660 2021 7 16 59411 0.2203 0.3965 -0.12592 2021 7 17 59412 0.2212 0.3952 -0.12533 2021 7 18 59413 0.2221 0.3939 -0.12474 2021 7 19 59414 0.2230 0.3926 -0.12400 2021 7 20 59415 0.2239 0.3913 -0.12306 2021 7 21 59416 0.2247 0.3900 -0.12189 2021 7 22 59417 0.2256 0.3886 -0.12053 2021 7 23 59418 0.2264 0.3873 -0.11908 2021 7 24 59419 0.2271 0.3859 -0.11765 2021 7 25 59420 0.2279 0.3845 -0.11634 2021 7 26 59421 0.2286 0.3831 -0.11520 2021 7 27 59422 0.2293 0.3817 -0.11424 2021 7 28 59423 0.2300 0.3803 -0.11339 2021 7 29 59424 0.2306 0.3789 -0.11259 2021 7 30 59425 0.2313 0.3774 -0.11178 2021 7 31 59426 0.2319 0.3760 -0.11090 2021 8 1 59427 0.2324 0.3745 -0.10989 2021 8 2 59428 0.2330 0.3730 -0.10875 2021 8 3 59429 0.2335 0.3715 -0.10745 2021 8 4 59430 0.2340 0.3700 -0.10602 2021 8 5 59431 0.2344 0.3685 -0.10450 2021 8 6 59432 0.2349 0.3670 -0.10294 2021 8 7 59433 0.2353 0.3655 -0.10141 2021 8 8 59434 0.2356 0.3640 -0.10000 2021 8 9 59435 0.2360 0.3624 -0.09878 2021 8 10 59436 0.2363 0.3609 -0.09779 2021 8 11 59437 0.2366 0.3594 -0.09704 2021 8 12 59438 0.2369 0.3578 -0.09650 2021 8 13 59439 0.2371 0.3562 -0.09606 2021 8 14 59440 0.2373 0.3547 -0.09564 2021 8 15 59441 0.2375 0.3531 -0.09511 2021 8 16 59442 0.2376 0.3515 -0.09440 2021 8 17 59443 0.2377 0.3500 -0.09348 2021 8 18 59444 0.2378 0.3484 -0.09238 2021 8 19 59445 0.2379 0.3468 -0.09117 2021 8 20 59446 0.2379 0.3452 -0.08997 2021 8 21 59447 0.2379 0.3436 -0.08887 2021 8 22 59448 0.2379 0.3420 -0.08796 2021 8 23 59449 0.2378 0.3404 -0.08724 2021 8 24 59450 0.2377 0.3388 -0.08669 2021 8 25 59451 0.2376 0.3372 -0.08625 2021 8 26 59452 0.2374 0.3357 -0.08582 2021 8 27 59453 0.2372 0.3341 -0.08536 2021 8 28 59454 0.2370 0.3325 -0.08479 2021 8 29 59455 0.2368 0.3309 -0.08408 2021 8 30 59456 0.2365 0.3293 -0.08324 2021 8 31 59457 0.2362 0.3277 -0.08226 2021 9 1 59458 0.2359 0.3261 -0.08119 2021 9 2 59459 0.2355 0.3246 -0.08007 2021 9 3 59460 0.2351 0.3230 -0.07898 2021 9 4 59461 0.2347 0.3214 -0.07798 2021 9 5 59462 0.2342 0.3199 -0.07717 2021 9 6 59463 0.2337 0.3183 -0.07660 2021 9 7 59464 0.2332 0.3167 -0.07630 2021 9 8 59465 0.2327 0.3152 -0.07625 2021 9 9 59466 0.2321 0.3137 -0.07636 2021 9 10 59467 0.2315 0.3121 -0.07650 2021 9 11 59468 0.2309 0.3106 -0.07656 2021 9 12 59469 0.2302 0.3091 -0.07642 2021 9 13 59470 0.2295 0.3076 -0.07606 2021 9 14 59471 0.2288 0.3061 -0.07549 2021 9 15 59472 0.2280 0.3046 -0.07479 2021 9 16 59473 0.2273 0.3031 -0.07407 2021 9 17 59474 0.2264 0.3017 -0.07343 2021 9 18 59475 0.2256 0.3002 -0.07295 2021 9 19 59476 0.2247 0.2987 -0.07266 2021 9 20 59477 0.2238 0.2973 -0.07256 2021 9 21 59478 0.2229 0.2959 -0.07259 2021 9 22 59479 0.2220 0.2945 -0.07268 2021 9 23 59480 0.2210 0.2931 -0.07275 2021 9 24 59481 0.2200 0.2917 -0.07273 2021 9 25 59482 0.2190 0.2903 -0.07258 2021 9 26 59483 0.2179 0.2890 -0.07228 2021 9 27 59484 0.2168 0.2876 -0.07182 2021 9 28 59485 0.2157 0.2863 -0.07125 2021 9 29 59486 0.2146 0.2850 -0.07060 2021 9 30 59487 0.2134 0.2837 -0.06996 2021 10 1 59488 0.2122 0.2824 -0.06938 2021 10 2 59489 0.2110 0.2812 -0.06895 2021 10 3 59490 0.2097 0.2799 -0.06874 2021 10 4 59491 0.2085 0.2787 -0.06880 2021 10 5 59492 0.2072 0.2775 -0.06915 2021 10 6 59493 0.2059 0.2763 -0.06972 2021 10 7 59494 0.2045 0.2751 -0.07040 2021 10 8 59495 0.2032 0.2740 -0.07105 2021 10 9 59496 0.2018 0.2728 -0.07153 2021 10 10 59497 0.2004 0.2717 -0.07176 2021 10 11 59498 0.1989 0.2706 -0.07174 2021 10 12 59499 0.1975 0.2696 -0.07153 2021 10 13 59500 0.1960 0.2685 -0.07124 2021 10 14 59501 0.1945 0.2675 -0.07097 2021 10 15 59502 0.1930 0.2665 -0.07080 2021 10 16 59503 0.1915 0.2655 -0.07076 2021 10 17 59504 0.1899 0.2645 -0.07086 2021 10 18 59505 0.1883 0.2636 -0.07106 2021 10 19 59506 0.1867 0.2627 -0.07130 2021 10 20 59507 0.1851 0.2618 -0.07151 2021 10 21 59508 0.1835 0.2609 -0.07164 2021 10 22 59509 0.1818 0.2600 -0.07165 2021 10 23 59510 0.1802 0.2592 -0.07151 2021 10 24 59511 0.1785 0.2584 -0.07124 2021 10 25 59512 0.1768 0.2576 -0.07085 2021 10 26 59513 0.1751 0.2569 -0.07039 2021 10 27 59514 0.1733 0.2562 -0.06991 2021 10 28 59515 0.1716 0.2555 -0.06947 2021 10 29 59516 0.1698 0.2548 -0.06912 2021 10 30 59517 0.1680 0.2541 -0.06894 2021 10 31 59518 0.1662 0.2535 -0.06899 2021 11 1 59519 0.1644 0.2529 -0.06932 2021 11 2 59520 0.1626 0.2524 -0.06990 2021 11 3 59521 0.1608 0.2518 -0.07065 2021 11 4 59522 0.1589 0.2513 -0.07141 2021 11 5 59523 0.1570 0.2508 -0.07202 2021 11 6 59524 0.1552 0.2503 -0.07237 2021 11 7 59525 0.1533 0.2499 -0.07238 2021 11 8 59526 0.1514 0.2495 -0.07212 2021 11 9 59527 0.1495 0.2491 -0.07171 2021 11 10 59528 0.1476 0.2488 -0.07127 2021 11 11 59529 0.1457 0.2484 -0.07089 2021 11 12 59530 0.1437 0.2481 -0.07066 2021 11 13 59531 0.1418 0.2479 -0.07058 2021 11 14 59532 0.1399 0.2476 -0.07060 2021 11 15 59533 0.1379 0.2474 -0.07067 2021 11 16 59534 0.1360 0.2473 -0.07076 2021 11 17 59535 0.1340 0.2471 -0.07073 2021 11 18 59536 0.1320 0.2470 -0.07060 2021 11 19 59537 0.1301 0.2469 -0.07039 2021 11 20 59538 0.1281 0.2468 -0.07009 2021 11 21 59539 0.1261 0.2468 -0.06967 2021 11 22 59540 0.1241 0.2468 -0.06919 2021 11 23 59541 0.1222 0.2468 -0.06870 2021 11 24 59542 0.1202 0.2469 -0.06819 2021 11 25 59543 0.1182 0.2470 -0.06774 2021 11 26 59544 0.1162 0.2471 -0.06741 2021 11 27 59545 0.1142 0.2472 -0.06722 2021 11 28 59546 0.1122 0.2474 -0.06720 2021 11 29 59547 0.1103 0.2476 -0.06750 2021 11 30 59548 0.1083 0.2478 -0.06802 2021 12 1 59549 0.1063 0.2481 -0.06862 2021 12 2 59550 0.1043 0.2484 -0.06921 2021 12 3 59551 0.1023 0.2487 -0.06975 2021 12 4 59552 0.1004 0.2490 -0.07008 2021 12 5 59553 0.0984 0.2494 -0.07015 2021 12 6 59554 0.0964 0.2498 -0.07009 2021 12 7 59555 0.0945 0.2503 -0.07002 2021 12 8 59556 0.0925 0.2507 -0.07008 2021 12 9 59557 0.0906 0.2512 -0.07034 2021 12 10 59558 0.0887 0.2518 -0.07074 2021 12 11 59559 0.0867 0.2523 -0.07128 2021 12 12 59560 0.0848 0.2529 -0.07188 2021 12 13 59561 0.0829 0.2535 -0.07243 2021 12 14 59562 0.0810 0.2541 -0.07296 2021 12 15 59563 0.0791 0.2548 -0.07332 2021 12 16 59564 0.0772 0.2555 -0.07346 2021 12 17 59565 0.0754 0.2562 -0.07340 2021 12 18 59566 0.0735 0.2570 -0.07308 2021 12 19 59567 0.0716 0.2578 -0.07253 2021 12 20 59568 0.0698 0.2586 -0.07184 2021 12 21 59569 0.0680 0.2594 -0.07106 2021 12 22 59570 0.0662 0.2603 -0.07032 2021 12 23 59571 0.0644 0.2612 -0.06974 2021 12 24 59572 0.0626 0.2621 -0.06934 2021 12 25 59573 0.0608 0.2631 -0.06914 2021 12 26 59574 0.0591 0.2640 -0.06919 2021 12 27 59575 0.0574 0.2650 -0.06943 2021 12 28 59576 0.0556 0.2661 -0.06974 2021 12 29 59577 0.0539 0.2671 -0.07002 2021 12 30 59578 0.0523 0.2682 -0.07022 2021 12 31 59579 0.0506 0.2693 -0.07020 2022 1 1 59580 0.0490 0.2704 -0.06990 2022 1 2 59581 0.0473 0.2716 -0.06934 2022 1 3 59582 0.0457 0.2728 -0.06864 2022 1 4 59583 0.0441 0.2740 -0.06799 2022 1 5 59584 0.0426 0.2752 -0.06747 2022 1 6 59585 0.0410 0.2764 -0.06718 2022 1 7 59586 0.0395 0.2777 -0.06716 2022 1 8 59587 0.0380 0.2790 -0.06725 2022 1 9 59588 0.0365 0.2803 -0.06739 2022 1 10 59589 0.0351 0.2817 -0.06752 2022 1 11 59590 0.0336 0.2830 -0.06754 2022 1 12 59591 0.0322 0.2844 -0.06737 2022 1 13 59592 0.0308 0.2858 -0.06705 2022 1 14 59593 0.0295 0.2873 -0.06659 2022 1 15 59594 0.0281 0.2887 -0.06601 2022 1 16 59595 0.0268 0.2902 -0.06534 2022 1 17 59596 0.0255 0.2917 -0.06464 2022 1 18 59597 0.0243 0.2932 -0.06405 2022 1 19 59598 0.0230 0.2947 -0.06358 2022 1 20 59599 0.0218 0.2963 -0.06323 2022 1 21 59600 0.0206 0.2979 -0.06309 2022 1 22 59601 0.0195 0.2994 -0.06313 2022 1 23 59602 0.0184 0.3010 -0.06332 2022 1 24 59603 0.0173 0.3027 -0.06362 2022 1 25 59604 0.0162 0.3043 -0.06397 2022 1 26 59605 0.0151 0.3060 -0.06425 2022 1 27 59606 0.0141 0.3076 -0.06440 2022 1 28 59607 0.0132 0.3093 -0.06433 2022 1 29 59608 0.0122 0.3110 -0.06418 2022 1 30 59609 0.0113 0.3127 -0.06388 2022 1 31 59610 0.0104 0.3145 -0.06359 2022 2 1 59611 0.0095 0.3162 -0.06346 2022 2 2 59612 0.0087 0.3180 -0.06347 2022 2 3 59613 0.0079 0.3198 -0.06362 2022 2 4 59614 0.0071 0.3215 -0.06391 2022 2 5 59615 0.0064 0.3233 -0.06435 2022 2 6 59616 0.0057 0.3251 -0.06491 2022 2 7 59617 0.0050 0.3270 -0.06540 2022 2 8 59618 0.0044 0.3288 -0.06586 2022 2 9 59619 0.0038 0.3306 -0.06617 2022 2 10 59620 0.0032 0.3325 -0.06632 2022 2 11 59621 0.0026 0.3344 -0.06631 2022 2 12 59622 0.0021 0.3362 -0.06617 2022 2 13 59623 0.0017 0.3381 -0.06600 2022 2 14 59624 0.0012 0.3400 -0.06590 2022 2 15 59625 0.0008 0.3419 -0.06592 2022 2 16 59626 0.0004 0.3438 -0.06610 2022 2 17 59627 0.0001 0.3457 -0.06649 2022 2 18 59628 -0.0002 0.3476 -0.06711 2022 2 19 59629 -0.0005 0.3495 -0.06798 2022 2 20 59630 -0.0007 0.3514 -0.06901 2022 2 21 59631 -0.0009 0.3534 -0.07014 2022 2 22 59632 -0.0011 0.3553 -0.07118 2022 2 23 59633 -0.0012 0.3572 -0.07203 2022 2 24 59634 -0.0013 0.3592 -0.07270 2022 2 25 59635 -0.0014 0.3611 -0.07319 2022 2 26 59636 -0.0014 0.3630 -0.07357 2022 2 27 59637 -0.0014 0.3650 -0.07393 2022 2 28 59638 -0.0014 0.3669 -0.07436 2022 3 1 59639 -0.0013 0.3689 -0.07503 2022 3 2 59640 -0.0012 0.3708 -0.07586 2022 3 3 59641 -0.0011 0.3727 -0.07685 2022 3 4 59642 -0.0009 0.3747 -0.07797 2022 3 5 59643 -0.0007 0.3766 -0.07910 2022 3 6 59644 -0.0004 0.3785 -0.08024 2022 3 7 59645 -0.0001 0.3805 -0.08125 2022 3 8 59646 0.0002 0.3824 -0.08206 2022 3 9 59647 0.0005 0.3843 -0.08268 2022 3 10 59648 0.0009 0.3862 -0.08314 2022 3 11 59649 0.0013 0.3882 -0.08336 2022 3 12 59650 0.0018 0.3901 -0.08349 2022 3 13 59651 0.0023 0.3920 -0.08359 2022 3 14 59652 0.0028 0.3939 -0.08370 2022 3 15 59653 0.0034 0.3957 -0.08395 2022 3 16 59654 0.0039 0.3976 -0.08444 2022 3 17 59655 0.0046 0.3995 -0.08517 2022 3 18 59656 0.0052 0.4014 -0.08610 2022 3 19 59657 0.0059 0.4032 -0.08718 2022 3 20 59658 0.0067 0.4051 -0.08832 2022 3 21 59659 0.0074 0.4069 -0.08940 2022 3 22 59660 0.0082 0.4087 -0.09031 2022 3 23 59661 0.0090 0.4105 -0.09090 2022 3 24 59662 0.0099 0.4123 -0.09122 2022 3 25 59663 0.0108 0.4141 -0.09133 2022 3 26 59664 0.0117 0.4159 -0.09136 2022 3 27 59665 0.0127 0.4177 -0.09142 2022 3 28 59666 0.0137 0.4194 -0.09160 2022 3 29 59667 0.0147 0.4211 -0.09200 2022 3 30 59668 0.0157 0.4229 -0.09270 2022 3 31 59669 0.0168 0.4246 -0.09358 2022 4 1 59670 0.0179 0.4263 -0.09453 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) 59283 -107.37 0.53 -7.78 0.09 59284 -107.15 0.53 -7.97 0.09 59285 -107.13 0.53 -8.07 0.09 59286 -107.20 0.55 -8.02 0.12 59287 -107.23 0.70 -7.87 0.09 59288 -107.19 0.70 -7.75 0.09 59289 -107.14 0.77 -7.76 0.05 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59283 0.210 0.212 -0.055 0.093 59284 0.220 0.212 -0.064 0.093 59285 0.232 0.212 -0.065 0.093 59286 0.248 0.219 -0.057 0.120 59287 0.268 0.277 -0.041 0.087 59288 0.289 0.277 -0.019 0.087 59289 0.312 0.305 0.006 0.049 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).