********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 5 August 2021 Vol. XXXIV No. 031 ______________________________________________________________________ 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 = -0.1 seconds beginning 17 July 2021 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 Dec 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 7 30 59425 0.24509 .00009 0.38258 .00009 -0.144356 0.000027 21 7 31 59426 0.24598 .00009 0.38116 .00009 -0.143919 0.000026 21 8 1 59427 0.24683 .00009 0.38010 .00009 -0.143346 0.000024 21 8 2 59428 0.24774 .00009 0.37897 .00009 -0.142650 0.000018 21 8 3 59429 0.24860 .00009 0.37765 .00009 -0.141842 0.000015 21 8 4 59430 0.24938 .00009 0.37622 .00009 -0.140890 0.000012 21 8 5 59431 0.25026 .00009 0.37477 .00009 -0.139843 0.000010 IERS Final Values MJD x y UT1-UTC " " s 21 6 2 59367 0.1635 0.4422 -0.18371 21 6 3 59368 0.1643 0.4418 -0.18367 21 6 4 59369 0.1653 0.4411 -0.18372 21 6 5 59370 0.1665 0.4400 -0.18374 21 6 6 59371 0.1674 0.4388 -0.18372 21 6 7 59372 0.1685 0.4378 -0.18351 21 6 8 59373 0.1700 0.4370 -0.18313 21 6 9 59374 0.1717 0.4365 -0.18260 21 6 10 59375 0.1731 0.4361 -0.18191 21 6 11 59376 0.1742 0.4357 -0.18109 21 6 12 59377 0.1755 0.4354 -0.18020 21 6 13 59378 0.1765 0.4351 -0.17928 21 6 14 59379 0.1776 0.4348 -0.17839 21 6 15 59380 0.1784 0.4345 -0.17760 21 6 16 59381 0.1792 0.4340 -0.17696 21 6 17 59382 0.1800 0.4331 -0.17652 21 6 18 59383 0.1815 0.4320 -0.17629 21 6 19 59384 0.1835 0.4312 -0.17625 21 6 20 59385 0.1853 0.4307 -0.17628 21 6 21 59386 0.1870 0.4304 -0.17623 21 6 22 59387 0.1886 0.4297 -0.17597 21 6 23 59388 0.1902 0.4287 -0.17546 21 6 24 59389 0.1920 0.4276 -0.17466 21 6 25 59390 0.1939 0.4263 -0.17360 21 6 26 59391 0.1955 0.4250 -0.17239 21 6 27 59392 0.1972 0.4239 -0.17115 21 6 28 59393 0.1990 0.4232 -0.17000 21 6 29 59394 0.2010 0.4220 -0.16900 21 6 30 59395 0.2032 0.4207 -0.16816 21 7 1 59396 0.2050 0.4194 -0.16743 _______________________________________________________________________ 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 = 0.1380 + 0.1076 cos A + 0.0541 sin A + 0.0008 cos C - 0.0445 sin C y = 0.3594 + 0.0588 cos A - 0.0929 sin A - 0.0445 cos C - 0.0008 sin C UT1-UTC = -0.1654 + 0.00024 (MJD - 59439) - (UT2-UT1) where A = 2*pi*(MJD-59431)/365.25 and C = 2*pi*(MJD-59431)/435. TAI-UTC(MJD 59432) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59431)**0.80 S t = 0.00025 (MJD-59431)**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 8 6 59432 0.2510 0.3733 -0.13879 2021 8 7 59433 0.2517 0.3719 -0.13774 2021 8 8 59434 0.2523 0.3705 -0.13673 2021 8 9 59435 0.2527 0.3691 -0.13583 2021 8 10 59436 0.2530 0.3676 -0.13510 2021 8 11 59437 0.2533 0.3659 -0.13458 2021 8 12 59438 0.2535 0.3642 -0.13425 2021 8 13 59439 0.2538 0.3625 -0.13404 2021 8 14 59440 0.2541 0.3608 -0.13382 2021 8 15 59441 0.2545 0.3591 -0.13352 2021 8 16 59442 0.2548 0.3574 -0.13310 2021 8 17 59443 0.2550 0.3558 -0.13254 2021 8 18 59444 0.2551 0.3542 -0.13184 2021 8 19 59445 0.2552 0.3525 -0.13105 2021 8 20 59446 0.2552 0.3508 -0.13028 2021 8 21 59447 0.2551 0.3491 -0.12961 2021 8 22 59448 0.2550 0.3474 -0.12911 2021 8 23 59449 0.2548 0.3456 -0.12883 2021 8 24 59450 0.2546 0.3439 -0.12873 2021 8 25 59451 0.2544 0.3422 -0.12874 2021 8 26 59452 0.2542 0.3404 -0.12878 2021 8 27 59453 0.2539 0.3387 -0.12875 2021 8 28 59454 0.2536 0.3370 -0.12860 2021 8 29 59455 0.2532 0.3352 -0.12829 2021 8 30 59456 0.2529 0.3335 -0.12781 2021 8 31 59457 0.2525 0.3318 -0.12717 2021 9 1 59458 0.2521 0.3301 -0.12641 2021 9 2 59459 0.2517 0.3284 -0.12558 2021 9 3 59460 0.2512 0.3267 -0.12475 2021 9 4 59461 0.2506 0.3250 -0.12399 2021 9 5 59462 0.2501 0.3233 -0.12339 2021 9 6 59463 0.2495 0.3217 -0.12300 2021 9 7 59464 0.2489 0.3200 -0.12287 2021 9 8 59465 0.2483 0.3183 -0.12299 2021 9 9 59466 0.2476 0.3166 -0.12327 2021 9 10 59467 0.2469 0.3150 -0.12360 2021 9 11 59468 0.2462 0.3133 -0.12384 2021 9 12 59469 0.2455 0.3117 -0.12390 2021 9 13 59470 0.2447 0.3101 -0.12374 2021 9 14 59471 0.2439 0.3085 -0.12338 2021 9 15 59472 0.2431 0.3069 -0.12290 2021 9 16 59473 0.2422 0.3053 -0.12240 2021 9 17 59474 0.2413 0.3037 -0.12199 2021 9 18 59475 0.2404 0.3021 -0.12175 2021 9 19 59476 0.2395 0.3005 -0.12170 2021 9 20 59477 0.2385 0.2990 -0.12185 2021 9 21 59478 0.2375 0.2974 -0.12214 2021 9 22 59479 0.2365 0.2959 -0.12249 2021 9 23 59480 0.2354 0.2944 -0.12283 2021 9 24 59481 0.2343 0.2929 -0.12308 2021 9 25 59482 0.2332 0.2914 -0.12322 2021 9 26 59483 0.2321 0.2899 -0.12320 2021 9 27 59484 0.2309 0.2885 -0.12304 2021 9 28 59485 0.2297 0.2870 -0.12276 2021 9 29 59486 0.2285 0.2856 -0.12241 2021 9 30 59487 0.2273 0.2842 -0.12204 2021 10 1 59488 0.2260 0.2828 -0.12173 2021 10 2 59489 0.2247 0.2814 -0.12155 2021 10 3 59490 0.2234 0.2801 -0.12158 2021 10 4 59491 0.2220 0.2787 -0.12186 2021 10 5 59492 0.2206 0.2774 -0.12240 2021 10 6 59493 0.2192 0.2761 -0.12316 2021 10 7 59494 0.2178 0.2748 -0.12402 2021 10 8 59495 0.2163 0.2736 -0.12483 2021 10 9 59496 0.2149 0.2723 -0.12546 2021 10 10 59497 0.2134 0.2711 -0.12583 2021 10 11 59498 0.2119 0.2699 -0.12596 2021 10 12 59499 0.2103 0.2687 -0.12590 2021 10 13 59500 0.2088 0.2676 -0.12576 2021 10 14 59501 0.2072 0.2664 -0.12566 2021 10 15 59502 0.2056 0.2653 -0.12569 2021 10 16 59503 0.2039 0.2642 -0.12588 2021 10 17 59504 0.2023 0.2632 -0.12625 2021 10 18 59505 0.2006 0.2621 -0.12675 2021 10 19 59506 0.1989 0.2611 -0.12731 2021 10 20 59507 0.1972 0.2601 -0.12785 2021 10 21 59508 0.1955 0.2591 -0.12832 2021 10 22 59509 0.1938 0.2582 -0.12864 2021 10 23 59510 0.1920 0.2573 -0.12880 2021 10 24 59511 0.1902 0.2564 -0.12878 2021 10 25 59512 0.1884 0.2555 -0.12859 2021 10 26 59513 0.1866 0.2546 -0.12830 2021 10 27 59514 0.1848 0.2538 -0.12794 2021 10 28 59515 0.1830 0.2530 -0.12761 2021 10 29 59516 0.1811 0.2522 -0.12736 2021 10 30 59517 0.1792 0.2515 -0.12728 2021 10 31 59518 0.1774 0.2508 -0.12742 2021 11 1 59519 0.1755 0.2501 -0.12782 2021 11 2 59520 0.1735 0.2494 -0.12846 2021 11 3 59521 0.1716 0.2488 -0.12925 2021 11 4 59522 0.1697 0.2482 -0.13007 2021 11 5 59523 0.1677 0.2476 -0.13077 2021 11 6 59524 0.1658 0.2471 -0.13122 2021 11 7 59525 0.1638 0.2465 -0.13138 2021 11 8 59526 0.1618 0.2460 -0.13130 2021 11 9 59527 0.1599 0.2456 -0.13108 2021 11 10 59528 0.1579 0.2451 -0.13086 2021 11 11 59529 0.1559 0.2447 -0.13074 2021 11 12 59530 0.1539 0.2443 -0.13077 2021 11 13 59531 0.1518 0.2440 -0.13098 2021 11 14 59532 0.1498 0.2437 -0.13131 2021 11 15 59533 0.1478 0.2434 -0.13172 2021 11 16 59534 0.1457 0.2431 -0.13213 2021 11 17 59535 0.1437 0.2429 -0.13248 2021 11 18 59536 0.1417 0.2427 -0.13271 2021 11 19 59537 0.1396 0.2425 -0.13278 2021 11 20 59538 0.1375 0.2424 -0.13268 2021 11 21 59539 0.1355 0.2423 -0.13240 2021 11 22 59540 0.1334 0.2422 -0.13206 2021 11 23 59541 0.1314 0.2421 -0.13165 2021 11 24 59542 0.1293 0.2421 -0.13123 2021 11 25 59543 0.1272 0.2421 -0.13087 2021 11 26 59544 0.1252 0.2422 -0.13064 2021 11 27 59545 0.1231 0.2422 -0.13059 2021 11 28 59546 0.1211 0.2423 -0.13077 2021 11 29 59547 0.1190 0.2424 -0.13117 2021 11 30 59548 0.1169 0.2426 -0.13176 2021 12 1 59549 0.1149 0.2428 -0.13245 2021 12 2 59550 0.1128 0.2430 -0.13308 2021 12 3 59551 0.1108 0.2433 -0.13354 2021 12 4 59552 0.1087 0.2436 -0.13374 2021 12 5 59553 0.1067 0.2439 -0.13367 2021 12 6 59554 0.1047 0.2442 -0.13342 2021 12 7 59555 0.1026 0.2446 -0.13310 2021 12 8 59556 0.1006 0.2450 -0.13285 2021 12 9 59557 0.0986 0.2454 -0.13275 2021 12 10 59558 0.0966 0.2459 -0.13281 2021 12 11 59559 0.0946 0.2464 -0.13300 2021 12 12 59560 0.0926 0.2469 -0.13326 2021 12 13 59561 0.0906 0.2475 -0.13352 2021 12 14 59562 0.0887 0.2480 -0.13371 2021 12 15 59563 0.0867 0.2486 -0.13379 2021 12 16 59564 0.0848 0.2493 -0.13370 2021 12 17 59565 0.0828 0.2500 -0.13344 2021 12 18 59566 0.0809 0.2507 -0.13301 2021 12 19 59567 0.0790 0.2514 -0.13244 2021 12 20 59568 0.0771 0.2521 -0.13178 2021 12 21 59569 0.0752 0.2529 -0.13108 2021 12 22 59570 0.0733 0.2537 -0.13043 2021 12 23 59571 0.0715 0.2546 -0.12990 2021 12 24 59572 0.0696 0.2554 -0.12953 2021 12 25 59573 0.0678 0.2563 -0.12936 2021 12 26 59574 0.0660 0.2573 -0.12941 2021 12 27 59575 0.0642 0.2582 -0.12964 2021 12 28 59576 0.0624 0.2592 -0.12998 2021 12 29 59577 0.0607 0.2602 -0.13034 2021 12 30 59578 0.0590 0.2612 -0.13059 2021 12 31 59579 0.0572 0.2623 -0.13064 2022 1 1 59580 0.0555 0.2634 -0.13045 2022 1 2 59581 0.0539 0.2645 -0.13005 2022 1 3 59582 0.0522 0.2656 -0.12955 2022 1 4 59583 0.0505 0.2668 -0.12910 2022 1 5 59584 0.0489 0.2680 -0.12879 2022 1 6 59585 0.0473 0.2692 -0.12867 2022 1 7 59586 0.0458 0.2704 -0.12873 2022 1 8 59587 0.0442 0.2717 -0.12889 2022 1 9 59588 0.0427 0.2730 -0.12909 2022 1 10 59589 0.0412 0.2743 -0.12923 2022 1 11 59590 0.0397 0.2756 -0.12925 2022 1 12 59591 0.0382 0.2770 -0.12913 2022 1 13 59592 0.0368 0.2783 -0.12883 2022 1 14 59593 0.0354 0.2797 -0.12837 2022 1 15 59594 0.0340 0.2811 -0.12777 2022 1 16 59595 0.0326 0.2826 -0.12707 2022 1 17 59596 0.0313 0.2840 -0.12633 2022 1 18 59597 0.0300 0.2855 -0.12563 2022 1 19 59598 0.0287 0.2870 -0.12504 2022 1 20 59599 0.0275 0.2885 -0.12462 2022 1 21 59600 0.0262 0.2901 -0.12440 2022 1 22 59601 0.0250 0.2916 -0.12440 2022 1 23 59602 0.0239 0.2932 -0.12457 2022 1 24 59603 0.0227 0.2948 -0.12487 2022 1 25 59604 0.0216 0.2964 -0.12519 2022 1 26 59605 0.0205 0.2981 -0.12544 2022 1 27 59606 0.0195 0.2997 -0.12553 2022 1 28 59607 0.0184 0.3014 -0.12540 2022 1 29 59608 0.0175 0.3031 -0.12508 2022 1 30 59609 0.0165 0.3048 -0.12463 2022 1 31 59610 0.0156 0.3065 -0.12418 2022 2 1 59611 0.0147 0.3082 -0.12386 2022 2 2 59612 0.0138 0.3099 -0.12374 2022 2 3 59613 0.0129 0.3117 -0.12384 2022 2 4 59614 0.0121 0.3135 -0.12410 2022 2 5 59615 0.0114 0.3152 -0.12442 2022 2 6 59616 0.0106 0.3170 -0.12471 2022 2 7 59617 0.0099 0.3188 -0.12488 2022 2 8 59618 0.0092 0.3207 -0.12488 2022 2 9 59619 0.0086 0.3225 -0.12468 2022 2 10 59620 0.0080 0.3243 -0.12429 2022 2 11 59621 0.0074 0.3262 -0.12372 2022 2 12 59622 0.0068 0.3280 -0.12302 2022 2 13 59623 0.0063 0.3299 -0.12228 2022 2 14 59624 0.0058 0.3318 -0.12156 2022 2 15 59625 0.0054 0.3337 -0.12097 2022 2 16 59626 0.0050 0.3356 -0.12057 2022 2 17 59627 0.0046 0.3375 -0.12044 2022 2 18 59628 0.0043 0.3394 -0.12058 2022 2 19 59629 0.0040 0.3413 -0.12098 2022 2 20 59630 0.0037 0.3432 -0.12155 2022 2 21 59631 0.0034 0.3451 -0.12221 2022 2 22 59632 0.0032 0.3470 -0.12283 2022 2 23 59633 0.0031 0.3490 -0.12332 2022 2 24 59634 0.0029 0.3509 -0.12358 2022 2 25 59635 0.0028 0.3528 -0.12362 2022 2 26 59636 0.0027 0.3548 -0.12349 2022 2 27 59637 0.0027 0.3567 -0.12327 2022 2 28 59638 0.0027 0.3587 -0.12310 2022 3 1 59639 0.0027 0.3606 -0.12308 2022 3 2 59640 0.0028 0.3625 -0.12325 2022 3 3 59641 0.0029 0.3645 -0.12361 2022 3 4 59642 0.0031 0.3664 -0.12408 2022 3 5 59643 0.0032 0.3684 -0.12457 2022 3 6 59644 0.0034 0.3703 -0.12498 2022 3 7 59645 0.0037 0.3722 -0.12523 2022 3 8 59646 0.0040 0.3742 -0.12529 2022 3 9 59647 0.0043 0.3761 -0.12516 2022 3 10 59648 0.0046 0.3780 -0.12488 2022 3 11 59649 0.0050 0.3800 -0.12448 2022 3 12 59650 0.0054 0.3819 -0.12407 2022 3 13 59651 0.0059 0.3838 -0.12370 2022 3 14 59652 0.0063 0.3857 -0.12342 2022 3 15 59653 0.0069 0.3876 -0.12327 2022 3 16 59654 0.0074 0.3895 -0.12327 2022 3 17 59655 0.0080 0.3914 -0.12348 2022 3 18 59656 0.0086 0.3933 -0.12394 2022 3 19 59657 0.0093 0.3951 -0.12460 2022 3 20 59658 0.0099 0.3970 -0.12532 2022 3 21 59659 0.0107 0.3988 -0.12596 2022 3 22 59660 0.0114 0.4007 -0.12645 2022 3 23 59661 0.0122 0.4025 -0.12671 2022 3 24 59662 0.0130 0.4043 -0.12677 2022 3 25 59663 0.0139 0.4061 -0.12667 2022 3 26 59664 0.0147 0.4079 -0.12651 2022 3 27 59665 0.0156 0.4097 -0.12643 2022 3 28 59666 0.0166 0.4115 -0.12655 2022 3 29 59667 0.0176 0.4133 -0.12686 2022 3 30 59668 0.0186 0.4150 -0.12736 2022 3 31 59669 0.0196 0.4167 -0.12802 2022 4 1 59670 0.0207 0.4184 -0.12878 2022 4 2 59671 0.0218 0.4201 -0.12953 2022 4 3 59672 0.0229 0.4218 -0.13019 2022 4 4 59673 0.0240 0.4235 -0.13073 2022 4 5 59674 0.0252 0.4252 -0.13103 2022 4 6 59675 0.0264 0.4268 -0.13109 2022 4 7 59676 0.0277 0.4284 -0.13095 2022 4 8 59677 0.0289 0.4300 -0.13067 2022 4 9 59678 0.0302 0.4316 -0.13036 2022 4 10 59679 0.0316 0.4331 -0.13002 2022 4 11 59680 0.0329 0.4347 -0.12983 2022 4 12 59681 0.0343 0.4362 -0.12983 2022 4 13 59682 0.0357 0.4377 -0.13005 2022 4 14 59683 0.0371 0.4392 -0.13050 2022 4 15 59684 0.0386 0.4407 -0.13117 2022 4 16 59685 0.0400 0.4421 -0.13204 2022 4 17 59686 0.0416 0.4435 -0.13292 2022 4 18 59687 0.0431 0.4449 -0.13371 2022 4 19 59688 0.0446 0.4463 -0.13429 2022 4 20 59689 0.0462 0.4476 -0.13461 2022 4 21 59690 0.0478 0.4490 -0.13472 2022 4 22 59691 0.0494 0.4503 -0.13464 2022 4 23 59692 0.0511 0.4516 -0.13452 2022 4 24 59693 0.0527 0.4528 -0.13450 2022 4 25 59694 0.0544 0.4540 -0.13467 2022 4 26 59695 0.0561 0.4552 -0.13503 2022 4 27 59696 0.0579 0.4564 -0.13550 2022 4 28 59697 0.0596 0.4576 -0.13603 2022 4 29 59698 0.0614 0.4587 -0.13656 2022 4 30 59699 0.0632 0.4598 -0.13694 2022 5 1 59700 0.0650 0.4609 -0.13727 2022 5 2 59701 0.0668 0.4619 -0.13738 2022 5 3 59702 0.0686 0.4630 -0.13726 2022 5 4 59703 0.0705 0.4640 -0.13691 2022 5 5 59704 0.0724 0.4649 -0.13634 2022 5 6 59705 0.0743 0.4659 -0.13565 2022 5 7 59706 0.0762 0.4668 -0.13500 2022 5 8 59707 0.0781 0.4677 -0.13442 2022 5 9 59708 0.0800 0.4685 -0.13404 2022 5 10 59709 0.0820 0.4694 -0.13383 2022 5 11 59710 0.0839 0.4702 -0.13383 2022 5 12 59711 0.0859 0.4709 -0.13406 2022 5 13 59712 0.0879 0.4717 -0.13444 2022 5 14 59713 0.0899 0.4724 -0.13491 2022 5 15 59714 0.0919 0.4731 -0.13530 2022 5 16 59715 0.0939 0.4737 -0.13551 2022 5 17 59716 0.0960 0.4743 -0.13550 2022 5 18 59717 0.0980 0.4749 -0.13517 2022 5 19 59718 0.1000 0.4755 -0.13458 2022 5 20 59719 0.1021 0.4760 -0.13394 2022 5 21 59720 0.1042 0.4765 -0.13342 2022 5 22 59721 0.1062 0.4770 -0.13311 2022 5 23 59722 0.1083 0.4774 -0.13301 2022 5 24 59723 0.1104 0.4778 -0.13303 2022 5 25 59724 0.1125 0.4782 -0.13311 2022 5 26 59725 0.1146 0.4785 -0.13316 2022 5 27 59726 0.1167 0.4788 -0.13307 2022 5 28 59727 0.1188 0.4791 -0.13281 2022 5 29 59728 0.1209 0.4794 -0.13242 2022 5 30 59729 0.1230 0.4796 -0.13187 2022 5 31 59730 0.1251 0.4798 -0.13113 2022 6 1 59731 0.1272 0.4799 -0.13028 2022 6 2 59732 0.1293 0.4800 -0.12939 2022 6 3 59733 0.1314 0.4801 -0.12851 2022 6 4 59734 0.1335 0.4802 -0.12766 2022 6 5 59735 0.1357 0.4802 -0.12682 2022 6 6 59736 0.1378 0.4802 -0.12607 2022 6 7 59737 0.1399 0.4801 -0.12546 2022 6 8 59738 0.1420 0.4801 -0.12502 2022 6 9 59739 0.1441 0.4800 -0.12476 2022 6 10 59740 0.1462 0.4798 -0.12451 2022 6 11 59741 0.1483 0.4797 -0.12420 2022 6 12 59742 0.1504 0.4795 -0.12369 2022 6 13 59743 0.1524 0.4792 -0.12297 2022 6 14 59744 0.1545 0.4790 -0.12194 2022 6 15 59745 0.1566 0.4787 -0.12067 2022 6 16 59746 0.1586 0.4784 -0.11935 2022 6 17 59747 0.1607 0.4780 -0.11803 2022 6 18 59748 0.1627 0.4776 -0.11683 2022 6 19 59749 0.1648 0.4772 -0.11588 2022 6 20 59750 0.1668 0.4767 -0.11512 2022 6 21 59751 0.1688 0.4763 -0.11447 2022 6 22 59752 0.1708 0.4758 -0.11382 2022 6 23 59753 0.1728 0.4752 -0.11303 2022 6 24 59754 0.1748 0.4746 -0.11204 2022 6 25 59755 0.1768 0.4740 -0.11081 2022 6 26 59756 0.1787 0.4734 -0.10942 2022 6 27 59757 0.1807 0.4728 -0.10786 2022 6 28 59758 0.1826 0.4721 -0.10617 2022 6 29 59759 0.1845 0.4713 -0.10438 2022 6 30 59760 0.1864 0.4706 -0.10270 2022 7 1 59761 0.1883 0.4698 -0.10121 2022 7 2 59762 0.1902 0.4690 -0.09980 2022 7 3 59763 0.1920 0.4682 -0.09854 2022 7 4 59764 0.1939 0.4673 -0.09742 2022 7 5 59765 0.1957 0.4664 -0.09646 2022 7 6 59766 0.1975 0.4655 -0.09563 2022 7 7 59767 0.1993 0.4645 -0.09492 2022 7 8 59768 0.2010 0.4636 -0.09423 2022 7 9 59769 0.2028 0.4626 -0.09347 2022 7 10 59770 0.2045 0.4615 -0.09259 2022 7 11 59771 0.2062 0.4605 -0.09151 2022 7 12 59772 0.2079 0.4594 -0.09024 2022 7 13 59773 0.2095 0.4583 -0.08881 2022 7 14 59774 0.2112 0.4572 -0.08734 2022 7 15 59775 0.2128 0.4560 -0.08601 2022 7 16 59776 0.2144 0.4548 -0.08489 2022 7 17 59777 0.2159 0.4536 -0.08389 2022 7 18 59778 0.2175 0.4524 -0.08306 2022 7 19 59779 0.2190 0.4511 -0.08226 2022 7 20 59780 0.2205 0.4498 -0.08140 2022 7 21 59781 0.2220 0.4485 -0.08033 2022 7 22 59782 0.2234 0.4472 -0.07910 2022 7 23 59783 0.2248 0.4459 -0.07765 2022 7 24 59784 0.2262 0.4445 -0.07597 2022 7 25 59785 0.2276 0.4431 -0.07412 2022 7 26 59786 0.2289 0.4417 -0.07219 2022 7 27 59787 0.2302 0.4403 -0.07017 2022 7 28 59788 0.2315 0.4388 -0.06820 2022 7 29 59789 0.2328 0.4373 -0.06641 2022 7 30 59790 0.2340 0.4358 -0.06486 2022 7 31 59791 0.2352 0.4343 -0.06356 2022 8 1 59792 0.2364 0.4328 -0.06253 2022 8 2 59793 0.2375 0.4312 -0.06174 2022 8 3 59794 0.2386 0.4297 -0.06107 2022 8 4 59795 0.2397 0.4281 -0.06045 2022 8 5 59796 0.2408 0.4265 -0.05977 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) 59412 -113.67 0.65 -9.59 0.12 59413 -114.22 0.57 -9.37 0.15 59414 -115.00 0.57 -9.24 0.15 59415 -115.67 0.48 -9.29 0.17 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 59367 -107.2 -10.3 59368 -107.3 -10.0 59369 -107.2 -9.7 59370 -107.3 -9.6 59371 -107.7 -9.4 59372 -108.2 -9.3 59373 -108.6 -9.4 59374 -108.7 -9.8 59375 -108.7 -10.1 59376 -108.6 -10.3 59377 -108.6 -10.3 59378 -108.8 -10.2 59379 -108.9 -10.1 59380 -109.0 -10.1 59381 -109.0 -10.1 59382 -108.9 -10.1 59383 -109.0 -10.1 59384 -109.2 -9.9 59385 -109.7 -9.7 59386 -110.4 -9.4 59387 -111.2 -9.3 59388 -111.7 -9.4 59389 -111.9 -9.6 59390 -111.6 -9.7 59391 -111.2 -9.8 59392 -110.9 -10.0 59393 -110.7 -10.2 59394 -110.9 -10.3 59395 -111.3 -10.0 59396 -111.8 -9.7 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59412 0.235 0.260 -0.120 0.120 59413 0.225 0.227 -0.132 0.146 59414 0.213 0.227 -0.144 0.146 59415 0.201 0.190 -0.157 0.168 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 59367 0.24 -0.16 59368 0.27 -0.14 59369 0.30 -0.12 59370 0.28 -0.12 59371 0.26 -0.13 59372 0.23 -0.13 59373 0.21 -0.14 59374 0.20 -0.13 59375 0.19 -0.11 59376 0.20 -0.10 59377 0.23 -0.10 59378 0.25 -0.10 59379 0.27 -0.10 59380 0.30 -0.10 59381 0.27 -0.13 59382 0.23 -0.17 59383 0.20 -0.21 59384 0.20 -0.20 59385 0.20 -0.18 59386 0.21 -0.15 59387 0.22 -0.13 59388 0.21 -0.16 59389 0.19 -0.20 59390 0.17 -0.24 59391 0.17 -0.23 59392 0.17 -0.21 59393 0.17 -0.18 59394 0.17 -0.15 59395 0.17 -0.14 59396 0.18 -0.13 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).