********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 11 March 2021 Vol. XXXIV No. 010 ______________________________________________________________________ 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 5 59278 0.05218 .00009 0.37789 .00009 -0.171917 0.000008 21 3 6 59279 0.05336 .00009 0.37935 .00009 -0.171964 0.000007 21 3 7 59280 0.05465 .00009 0.38084 .00009 -0.171827 0.000007 21 3 8 59281 0.05616 .00009 0.38234 .00009 -0.171592 0.000009 21 3 9 59282 0.05760 .00009 0.38386 .00009 -0.171323 0.000010 21 3 10 59283 0.05870 .00009 0.38520 .00009 -0.171113 0.000010 21 3 11 59284 0.05960 .00009 0.38638 .00009 -0.171030 0.000012 IERS Final Values MJD x y UT1-UTC " " s 21 1 2 59216 0.0678 0.3055 -0.17484 21 1 3 59217 0.0661 0.3067 -0.17448 21 1 4 59218 0.0639 0.3078 -0.17432 21 1 5 59219 0.0617 0.3086 -0.17438 21 1 6 59220 0.0604 0.3095 -0.17460 21 1 7 59221 0.0595 0.3103 -0.17488 21 1 8 59222 0.0590 0.3111 -0.17508 21 1 9 59223 0.0583 0.3120 -0.17508 21 1 10 59224 0.0581 0.3130 -0.17487 21 1 11 59225 0.0576 0.3142 -0.17448 21 1 12 59226 0.0570 0.3144 -0.17397 21 1 13 59227 0.0560 0.3155 -0.17343 21 1 14 59228 0.0549 0.3161 -0.17291 21 1 15 59229 0.0543 0.3169 -0.17246 21 1 16 59230 0.0538 0.3178 -0.17210 21 1 17 59231 0.0530 0.3187 -0.17181 21 1 18 59232 0.0525 0.3195 -0.17158 21 1 19 59233 0.0525 0.3200 -0.17141 21 1 20 59234 0.0528 0.3209 -0.17124 21 1 21 59235 0.0525 0.3219 -0.17105 21 1 22 59236 0.0524 0.3231 -0.17080 21 1 23 59237 0.0524 0.3242 -0.17048 21 1 24 59238 0.0519 0.3256 -0.17003 21 1 25 59239 0.0509 0.3272 -0.16942 21 1 26 59240 0.0503 0.3287 -0.16872 21 1 27 59241 0.0500 0.3305 -0.16800 21 1 28 59242 0.0499 0.3324 -0.16737 21 1 29 59243 0.0499 0.3344 -0.16691 21 1 30 59244 0.0496 0.3361 -0.16666 21 1 31 59245 0.0493 0.3379 -0.16669 21 2 1 59246 0.0494 0.3399 -0.16702 _______________________________________________________________________ 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 = 0.1271 - 0.0999 cos A + 0.0430 sin A + 0.0265 cos C - 0.0129 sin C y = 0.3597 + 0.0383 cos A + 0.0917 sin A - 0.0129 cos C - 0.0265 sin C UT1-UTC = -0.1543 + 0.00021 (MJD - 59292) - (UT2-UT1) where A = 2*pi*(MJD-59284)/365.25 and C = 2*pi*(MJD-59284)/435. TAI-UTC(MJD 59285) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59284)**0.80 S t = 0.00025 (MJD-59284)**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 12 59285 0.0604 0.3876 -0.17109 2021 3 13 59286 0.0612 0.3888 -0.17129 2021 3 14 59287 0.0620 0.3900 -0.17158 2021 3 15 59288 0.0629 0.3912 -0.17190 2021 3 16 59289 0.0637 0.3924 -0.17218 2021 3 17 59290 0.0644 0.3937 -0.17235 2021 3 18 59291 0.0651 0.3949 -0.17236 2021 3 19 59292 0.0658 0.3960 -0.17222 2021 3 20 59293 0.0665 0.3971 -0.17195 2021 3 21 59294 0.0671 0.3981 -0.17159 2021 3 22 59295 0.0679 0.3991 -0.17120 2021 3 23 59296 0.0686 0.4002 -0.17083 2021 3 24 59297 0.0693 0.4012 -0.17054 2021 3 25 59298 0.0700 0.4023 -0.17042 2021 3 26 59299 0.0706 0.4033 -0.17055 2021 3 27 59300 0.0712 0.4043 -0.17098 2021 3 28 59301 0.0719 0.4054 -0.17167 2021 3 29 59302 0.0725 0.4064 -0.17252 2021 3 30 59303 0.0732 0.4074 -0.17339 2021 3 31 59304 0.0739 0.4083 -0.17411 2021 4 1 59305 0.0747 0.4093 -0.17460 2021 4 2 59306 0.0755 0.4103 -0.17482 2021 4 3 59307 0.0763 0.4112 -0.17482 2021 4 4 59308 0.0771 0.4122 -0.17471 2021 4 5 59309 0.0780 0.4131 -0.17458 2021 4 6 59310 0.0789 0.4140 -0.17454 2021 4 7 59311 0.0798 0.4150 -0.17463 2021 4 8 59312 0.0808 0.4159 -0.17489 2021 4 9 59313 0.0818 0.4167 -0.17529 2021 4 10 59314 0.0828 0.4176 -0.17581 2021 4 11 59315 0.0838 0.4185 -0.17639 2021 4 12 59316 0.0849 0.4193 -0.17695 2021 4 13 59317 0.0860 0.4202 -0.17744 2021 4 14 59318 0.0871 0.4210 -0.17781 2021 4 15 59319 0.0882 0.4218 -0.17801 2021 4 16 59320 0.0894 0.4225 -0.17805 2021 4 17 59321 0.0906 0.4233 -0.17793 2021 4 18 59322 0.0918 0.4240 -0.17769 2021 4 19 59323 0.0930 0.4248 -0.17739 2021 4 20 59324 0.0943 0.4255 -0.17711 2021 4 21 59325 0.0955 0.4262 -0.17693 2021 4 22 59326 0.0968 0.4268 -0.17693 2021 4 23 59327 0.0981 0.4275 -0.17717 2021 4 24 59328 0.0994 0.4281 -0.17769 2021 4 25 59329 0.1008 0.4287 -0.17842 2021 4 26 59330 0.1021 0.4293 -0.17925 2021 4 27 59331 0.1035 0.4299 -0.18004 2021 4 28 59332 0.1049 0.4304 -0.18064 2021 4 29 59333 0.1063 0.4310 -0.18095 2021 4 30 59334 0.1077 0.4315 -0.18098 2021 5 1 59335 0.1091 0.4320 -0.18079 2021 5 2 59336 0.1105 0.4324 -0.18049 2021 5 3 59337 0.1119 0.4329 -0.18020 2021 5 4 59338 0.1134 0.4333 -0.17999 2021 5 5 59339 0.1148 0.4337 -0.17989 2021 5 6 59340 0.1163 0.4341 -0.17992 2021 5 7 59341 0.1178 0.4345 -0.18003 2021 5 8 59342 0.1193 0.4348 -0.18020 2021 5 9 59343 0.1208 0.4351 -0.18036 2021 5 10 59344 0.1223 0.4354 -0.18046 2021 5 11 59345 0.1238 0.4357 -0.18046 2021 5 12 59346 0.1253 0.4360 -0.18030 2021 5 13 59347 0.1268 0.4362 -0.17998 2021 5 14 59348 0.1284 0.4364 -0.17949 2021 5 15 59349 0.1299 0.4366 -0.17888 2021 5 16 59350 0.1315 0.4367 -0.17819 2021 5 17 59351 0.1330 0.4369 -0.17749 2021 5 18 59352 0.1346 0.4370 -0.17685 2021 5 19 59353 0.1361 0.4371 -0.17635 2021 5 20 59354 0.1377 0.4371 -0.17604 2021 5 21 59355 0.1393 0.4372 -0.17598 2021 5 22 59356 0.1408 0.4372 -0.17614 2021 5 23 59357 0.1424 0.4372 -0.17647 2021 5 24 59358 0.1440 0.4371 -0.17683 2021 5 25 59359 0.1456 0.4371 -0.17707 2021 5 26 59360 0.1472 0.4370 -0.17708 2021 5 27 59361 0.1488 0.4369 -0.17679 2021 5 28 59362 0.1503 0.4368 -0.17624 2021 5 29 59363 0.1519 0.4366 -0.17554 2021 5 30 59364 0.1535 0.4364 -0.17479 2021 5 31 59365 0.1551 0.4362 -0.17410 2021 6 1 59366 0.1567 0.4360 -0.17354 2021 6 2 59367 0.1583 0.4358 -0.17310 2021 6 3 59368 0.1599 0.4355 -0.17275 2021 6 4 59369 0.1614 0.4352 -0.17245 2021 6 5 59370 0.1630 0.4349 -0.17215 2021 6 6 59371 0.1646 0.4345 -0.17177 2021 6 7 59372 0.1661 0.4341 -0.17128 2021 6 8 59373 0.1677 0.4337 -0.17064 2021 6 9 59374 0.1693 0.4333 -0.16983 2021 6 10 59375 0.1708 0.4329 -0.16884 2021 6 11 59376 0.1723 0.4324 -0.16771 2021 6 12 59377 0.1739 0.4319 -0.16647 2021 6 13 59378 0.1754 0.4314 -0.16520 2021 6 14 59379 0.1769 0.4308 -0.16397 2021 6 15 59380 0.1784 0.4303 -0.16286 2021 6 16 59381 0.1800 0.4297 -0.16192 2021 6 17 59382 0.1814 0.4291 -0.16120 2021 6 18 59383 0.1829 0.4284 -0.16069 2021 6 19 59384 0.1844 0.4278 -0.16034 2021 6 20 59385 0.1859 0.4271 -0.16008 2021 6 21 59386 0.1873 0.4264 -0.15976 2021 6 22 59387 0.1888 0.4257 -0.15928 2021 6 23 59388 0.1902 0.4249 -0.15854 2021 6 24 59389 0.1916 0.4241 -0.15754 2021 6 25 59390 0.1930 0.4233 -0.15634 2021 6 26 59391 0.1944 0.4225 -0.15507 2021 6 27 59392 0.1958 0.4217 -0.15383 2021 6 28 59393 0.1971 0.4208 -0.15271 2021 6 29 59394 0.1985 0.4199 -0.15173 2021 6 30 59395 0.1998 0.4190 -0.15088 2021 7 1 59396 0.2011 0.4181 -0.15011 2021 7 2 59397 0.2024 0.4171 -0.14934 2021 7 3 59398 0.2037 0.4162 -0.14853 2021 7 4 59399 0.2050 0.4152 -0.14762 2021 7 5 59400 0.2062 0.4142 -0.14659 2021 7 6 59401 0.2075 0.4132 -0.14539 2021 7 7 59402 0.2087 0.4121 -0.14404 2021 7 8 59403 0.2099 0.4110 -0.14255 2021 7 9 59404 0.2110 0.4099 -0.14096 2021 7 10 59405 0.2122 0.4088 -0.13934 2021 7 11 59406 0.2133 0.4077 -0.13776 2021 7 12 59407 0.2144 0.4066 -0.13630 2021 7 13 59408 0.2155 0.4054 -0.13502 2021 7 14 59409 0.2166 0.4042 -0.13395 2021 7 15 59410 0.2176 0.4030 -0.13309 2021 7 16 59411 0.2187 0.4018 -0.13242 2021 7 17 59412 0.2197 0.4006 -0.13183 2021 7 18 59413 0.2207 0.3993 -0.13124 2021 7 19 59414 0.2216 0.3981 -0.13053 2021 7 20 59415 0.2226 0.3968 -0.12962 2021 7 21 59416 0.2235 0.3955 -0.12849 2021 7 22 59417 0.2244 0.3942 -0.12717 2021 7 23 59418 0.2252 0.3929 -0.12576 2021 7 24 59419 0.2261 0.3915 -0.12438 2021 7 25 59420 0.2269 0.3902 -0.12312 2021 7 26 59421 0.2277 0.3888 -0.12203 2021 7 27 59422 0.2285 0.3874 -0.12111 2021 7 28 59423 0.2292 0.3860 -0.12031 2021 7 29 59424 0.2299 0.3846 -0.11956 2021 7 30 59425 0.2306 0.3832 -0.11880 2021 7 31 59426 0.2313 0.3818 -0.11796 2021 8 1 59427 0.2319 0.3803 -0.11699 2021 8 2 59428 0.2325 0.3789 -0.11589 2021 8 3 59429 0.2331 0.3774 -0.11463 2021 8 4 59430 0.2336 0.3759 -0.11324 2021 8 5 59431 0.2342 0.3744 -0.11175 2021 8 6 59432 0.2347 0.3729 -0.11023 2021 8 7 59433 0.2351 0.3714 -0.10874 2021 8 8 59434 0.2356 0.3699 -0.10736 2021 8 9 59435 0.2360 0.3684 -0.10617 2021 8 10 59436 0.2364 0.3669 -0.10522 2021 8 11 59437 0.2367 0.3653 -0.10451 2021 8 12 59438 0.2370 0.3638 -0.10399 2021 8 13 59439 0.2373 0.3622 -0.10359 2021 8 14 59440 0.2376 0.3607 -0.10319 2021 8 15 59441 0.2379 0.3591 -0.10268 2021 8 16 59442 0.2381 0.3576 -0.10200 2021 8 17 59443 0.2382 0.3560 -0.10110 2021 8 18 59444 0.2384 0.3544 -0.10002 2021 8 19 59445 0.2385 0.3528 -0.09883 2021 8 20 59446 0.2386 0.3513 -0.09765 2021 8 21 59447 0.2387 0.3497 -0.09658 2021 8 22 59448 0.2387 0.3481 -0.09569 2021 8 23 59449 0.2387 0.3465 -0.09500 2021 8 24 59450 0.2387 0.3449 -0.09447 2021 8 25 59451 0.2386 0.3433 -0.09404 2021 8 26 59452 0.2385 0.3417 -0.09364 2021 8 27 59453 0.2384 0.3401 -0.09319 2021 8 28 59454 0.2382 0.3385 -0.09264 2021 8 29 59455 0.2380 0.3369 -0.09196 2021 8 30 59456 0.2378 0.3353 -0.09113 2021 8 31 59457 0.2376 0.3338 -0.09017 2021 9 1 59458 0.2373 0.3322 -0.08910 2021 9 2 59459 0.2370 0.3306 -0.08799 2021 9 3 59460 0.2367 0.3290 -0.08690 2021 9 4 59461 0.2363 0.3274 -0.08591 2021 9 5 59462 0.2359 0.3259 -0.08510 2021 9 6 59463 0.2355 0.3243 -0.08453 2021 9 7 59464 0.2350 0.3227 -0.08422 2021 9 8 59465 0.2345 0.3212 -0.08416 2021 9 9 59466 0.2340 0.3196 -0.08426 2021 9 10 59467 0.2334 0.3181 -0.08439 2021 9 11 59468 0.2329 0.3165 -0.08443 2021 9 12 59469 0.2323 0.3150 -0.08428 2021 9 13 59470 0.2316 0.3135 -0.08389 2021 9 14 59471 0.2309 0.3119 -0.08328 2021 9 15 59472 0.2302 0.3104 -0.08253 2021 9 16 59473 0.2295 0.3089 -0.08174 2021 9 17 59474 0.2288 0.3074 -0.08101 2021 9 18 59475 0.2280 0.3060 -0.08042 2021 9 19 59476 0.2272 0.3045 -0.08000 2021 9 20 59477 0.2263 0.3030 -0.07975 2021 9 21 59478 0.2254 0.3016 -0.07962 2021 9 22 59479 0.2245 0.3002 -0.07953 2021 9 23 59480 0.2236 0.2987 -0.07941 2021 9 24 59481 0.2227 0.2973 -0.07922 2021 9 25 59482 0.2217 0.2959 -0.07891 2021 9 26 59483 0.2207 0.2945 -0.07846 2021 9 27 59484 0.2196 0.2932 -0.07789 2021 9 28 59485 0.2186 0.2918 -0.07721 2021 9 29 59486 0.2175 0.2905 -0.07646 2021 9 30 59487 0.2164 0.2891 -0.07570 2021 10 1 59488 0.2152 0.2878 -0.07498 2021 10 2 59489 0.2140 0.2865 -0.07438 2021 10 3 59490 0.2128 0.2853 -0.07396 2021 10 4 59491 0.2116 0.2840 -0.07378 2021 10 5 59492 0.2104 0.2827 -0.07386 2021 10 6 59493 0.2091 0.2815 -0.07413 2021 10 7 59494 0.2078 0.2803 -0.07452 2021 10 8 59495 0.2065 0.2791 -0.07487 2021 10 9 59496 0.2051 0.2779 -0.07509 2021 10 10 59497 0.2038 0.2768 -0.07511 2021 10 11 59498 0.2024 0.2757 -0.07493 2021 10 12 59499 0.2010 0.2745 -0.07463 2021 10 13 59500 0.1995 0.2735 -0.07429 2021 10 14 59501 0.1981 0.2724 -0.07400 2021 10 15 59502 0.1966 0.2713 -0.07383 2021 10 16 59503 0.1951 0.2703 -0.07381 2021 10 17 59504 0.1936 0.2693 -0.07394 2021 10 18 59505 0.1920 0.2683 -0.07423 2021 10 19 59506 0.1905 0.2673 -0.07464 2021 10 20 59507 0.1889 0.2664 -0.07505 2021 10 21 59508 0.1873 0.2655 -0.07542 2021 10 22 59509 0.1857 0.2646 -0.07577 2021 10 23 59510 0.1840 0.2637 -0.07602 2021 10 24 59511 0.1824 0.2628 -0.07610 2021 10 25 59512 0.1807 0.2620 -0.07609 2021 10 26 59513 0.1790 0.2612 -0.07602 2021 10 27 59514 0.1773 0.2604 -0.07597 2021 10 28 59515 0.1756 0.2597 -0.07600 2021 10 29 59516 0.1739 0.2589 -0.07610 2021 10 30 59517 0.1721 0.2582 -0.07637 2021 10 31 59518 0.1703 0.2576 -0.07685 2021 11 1 59519 0.1686 0.2569 -0.07756 2021 11 2 59520 0.1668 0.2563 -0.07854 2021 11 3 59521 0.1650 0.2557 -0.07964 2021 11 4 59522 0.1631 0.2551 -0.08070 2021 11 5 59523 0.1613 0.2546 -0.08161 2021 11 6 59524 0.1595 0.2540 -0.08219 2021 11 7 59525 0.1576 0.2536 -0.08241 2021 11 8 59526 0.1557 0.2531 -0.08234 2021 11 9 59527 0.1539 0.2527 -0.08206 2021 11 10 59528 0.1520 0.2522 -0.08179 2021 11 11 59529 0.1501 0.2519 -0.08165 2021 11 12 59530 0.1482 0.2515 -0.08167 2021 11 13 59531 0.1463 0.2512 -0.08186 2021 11 14 59532 0.1443 0.2509 -0.08221 2021 11 15 59533 0.1424 0.2506 -0.08263 2021 11 16 59534 0.1405 0.2504 -0.08301 2021 11 17 59535 0.1385 0.2502 -0.08328 2021 11 18 59536 0.1366 0.2500 -0.08345 2021 11 19 59537 0.1346 0.2498 -0.08346 2021 11 20 59538 0.1327 0.2497 -0.08324 2021 11 21 59539 0.1307 0.2496 -0.08281 2021 11 22 59540 0.1288 0.2495 -0.08219 2021 11 23 59541 0.1268 0.2495 -0.08151 2021 11 24 59542 0.1248 0.2495 -0.08080 2021 11 25 59543 0.1229 0.2495 -0.08021 2021 11 26 59544 0.1209 0.2495 -0.07983 2021 11 27 59545 0.1189 0.2496 -0.07964 2021 11 28 59546 0.1169 0.2497 -0.07971 2021 11 29 59547 0.1150 0.2499 -0.08004 2021 11 30 59548 0.1130 0.2500 -0.08058 2021 12 1 59549 0.1110 0.2502 -0.08117 2021 12 2 59550 0.1091 0.2504 -0.08173 2021 12 3 59551 0.1071 0.2507 -0.08216 2021 12 4 59552 0.1052 0.2510 -0.08233 2021 12 5 59553 0.1032 0.2513 -0.08225 2021 12 6 59554 0.1012 0.2516 -0.08200 2021 12 7 59555 0.0993 0.2520 -0.08175 2021 12 8 59556 0.0974 0.2524 -0.08158 2021 12 9 59557 0.0954 0.2528 -0.08152 2021 12 10 59558 0.0935 0.2533 -0.08161 2021 12 11 59559 0.0916 0.2538 -0.08182 2021 12 12 59560 0.0897 0.2543 -0.08207 2021 12 13 59561 0.0877 0.2548 -0.08230 2021 12 14 59562 0.0858 0.2554 -0.08249 2021 12 15 59563 0.0840 0.2560 -0.08257 2021 12 16 59564 0.0821 0.2566 -0.08252 2021 12 17 59565 0.0802 0.2573 -0.08229 2021 12 18 59566 0.0784 0.2580 -0.08201 2021 12 19 59567 0.0765 0.2587 -0.08156 2021 12 20 59568 0.0747 0.2595 -0.08103 2021 12 21 59569 0.0729 0.2602 -0.08049 2021 12 22 59570 0.0711 0.2610 -0.07993 2021 12 23 59571 0.0693 0.2618 -0.07941 2021 12 24 59572 0.0675 0.2627 -0.07903 2021 12 25 59573 0.0657 0.2636 -0.07892 2021 12 26 59574 0.0640 0.2645 -0.07916 2021 12 27 59575 0.0622 0.2654 -0.07962 2021 12 28 59576 0.0605 0.2664 -0.08032 2021 12 29 59577 0.0588 0.2674 -0.08105 2021 12 30 59578 0.0571 0.2684 -0.08168 2021 12 31 59579 0.0555 0.2694 -0.08212 2022 1 1 59580 0.0538 0.2705 -0.08227 2022 1 2 59581 0.0522 0.2716 -0.08224 2022 1 3 59582 0.0506 0.2727 -0.08216 2022 1 4 59583 0.0490 0.2738 -0.08213 2022 1 5 59584 0.0474 0.2750 -0.08225 2022 1 6 59585 0.0458 0.2762 -0.08255 2022 1 7 59586 0.0443 0.2774 -0.08303 2022 1 8 59587 0.0428 0.2786 -0.08366 2022 1 9 59588 0.0413 0.2799 -0.08434 2022 1 10 59589 0.0399 0.2811 -0.08502 2022 1 11 59590 0.0384 0.2824 -0.08557 2022 1 12 59591 0.0370 0.2838 -0.08593 2022 1 13 59592 0.0356 0.2851 -0.08615 2022 1 14 59593 0.0342 0.2865 -0.08622 2022 1 15 59594 0.0329 0.2879 -0.08619 2022 1 16 59595 0.0316 0.2893 -0.08607 2022 1 17 59596 0.0303 0.2907 -0.08590 2022 1 18 59597 0.0290 0.2922 -0.08580 2022 1 19 59598 0.0277 0.2936 -0.08575 2022 1 20 59599 0.0265 0.2951 -0.08581 2022 1 21 59600 0.0253 0.2966 -0.08607 2022 1 22 59601 0.0242 0.2982 -0.08653 2022 1 23 59602 0.0230 0.2997 -0.08724 2022 1 24 59603 0.0219 0.3013 -0.08809 2022 1 25 59604 0.0208 0.3028 -0.08895 2022 1 26 59605 0.0198 0.3044 -0.08973 2022 1 27 59606 0.0188 0.3061 -0.09036 2022 1 28 59607 0.0178 0.3077 -0.09067 2022 1 29 59608 0.0168 0.3093 -0.09077 2022 1 30 59609 0.0159 0.3110 -0.09072 2022 1 31 59610 0.0149 0.3127 -0.09061 2022 2 1 59611 0.0141 0.3144 -0.09062 2022 2 2 59612 0.0132 0.3161 -0.09088 2022 2 3 59613 0.0124 0.3178 -0.09136 2022 2 4 59614 0.0116 0.3195 -0.09198 2022 2 5 59615 0.0109 0.3212 -0.09265 2022 2 6 59616 0.0101 0.3230 -0.09329 2022 2 7 59617 0.0095 0.3248 -0.09382 2022 2 8 59618 0.0088 0.3266 -0.09419 2022 2 9 59619 0.0082 0.3283 -0.09430 2022 2 10 59620 0.0076 0.3301 -0.09419 2022 2 11 59621 0.0070 0.3320 -0.09391 2022 2 12 59622 0.0065 0.3338 -0.09351 2022 2 13 59623 0.0060 0.3356 -0.09305 2022 2 14 59624 0.0055 0.3374 -0.09259 2022 2 15 59625 0.0051 0.3393 -0.09224 2022 2 16 59626 0.0047 0.3411 -0.09213 2022 2 17 59627 0.0044 0.3430 -0.09227 2022 2 18 59628 0.0040 0.3449 -0.09263 2022 2 19 59629 0.0037 0.3467 -0.09318 2022 2 20 59630 0.0035 0.3486 -0.09387 2022 2 21 59631 0.0033 0.3505 -0.09470 2022 2 22 59632 0.0031 0.3524 -0.09557 2022 2 23 59633 0.0029 0.3543 -0.09637 2022 2 24 59634 0.0028 0.3561 -0.09700 2022 2 25 59635 0.0027 0.3580 -0.09744 2022 2 26 59636 0.0026 0.3599 -0.09776 2022 2 27 59637 0.0026 0.3618 -0.09803 2022 2 28 59638 0.0026 0.3637 -0.09836 2022 3 1 59639 0.0027 0.3656 -0.09884 2022 3 2 59640 0.0028 0.3675 -0.09953 2022 3 3 59641 0.0029 0.3694 -0.10039 2022 3 4 59642 0.0031 0.3713 -0.10135 2022 3 5 59643 0.0032 0.3732 -0.10228 2022 3 6 59644 0.0035 0.3751 -0.10311 2022 3 7 59645 0.0037 0.3770 -0.10375 2022 3 8 59646 0.0040 0.3789 -0.10415 2022 3 9 59647 0.0044 0.3808 -0.10430 2022 3 10 59648 0.0047 0.3827 -0.10429 2022 3 11 59649 0.0051 0.3846 -0.10410 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) 59265 -108.42 0.59 -6.54 0.23 59266 -108.35 0.62 -6.63 0.15 59267 -108.29 0.62 -6.85 0.15 59268 -108.23 0.64 -7.17 0.04 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 59216 -109.2 -5.8 59217 -108.9 -5.8 59218 -108.7 -5.8 59219 -108.5 -5.8 59220 -108.5 -5.7 59221 -108.6 -5.5 59222 -108.9 -5.3 59223 -109.4 -5.3 59224 -109.8 -5.4 59225 -109.9 -5.5 59226 -109.8 -5.5 59227 -109.4 -5.6 59228 -109.0 -5.8 59229 -108.5 -6.1 59230 -108.4 -6.2 59231 -108.4 -6.1 59232 -108.7 -5.9 59233 -109.1 -5.7 59234 -109.3 -5.7 59235 -109.3 -5.7 59236 -109.3 -5.7 59237 -109.2 -5.5 59238 -109.1 -5.4 59239 -109.2 -5.6 59240 -109.2 -5.9 59241 -109.1 -6.2 59242 -108.8 -6.4 59243 -108.3 -6.4 59244 -108.0 -6.3 59245 -107.8 -6.1 59246 -108.0 -6.1 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59265 0.276 0.234 0.145 0.234 59266 0.272 0.245 0.107 0.145 59267 0.265 0.245 0.060 0.145 59268 0.256 0.255 0.007 0.041 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 59216 0.07 0.11 59217 0.10 0.09 59218 0.13 0.08 59219 0.16 0.07 59220 0.22 0.12 59221 0.28 0.18 59222 0.34 0.25 59223 0.32 0.25 59224 0.27 0.22 59225 0.22 0.20 59226 0.17 0.17 59227 0.22 0.09 59228 0.29 0.00 59229 0.36 -0.09 59230 0.34 -0.06 59231 0.30 0.02 59232 0.26 0.10 59233 0.22 0.18 59234 0.23 0.15 59235 0.26 0.11 59236 0.29 0.06 59237 0.28 0.06 59238 0.27 0.07 59239 0.26 0.08 59240 0.24 0.10 59241 0.28 0.08 59242 0.32 0.05 59243 0.37 0.02 59244 0.33 0.02 59245 0.26 0.03 59246 0.18 0.03 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).