********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 9 September 2021 Vol. XXXIV No. 036 ______________________________________________________________________ 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 * * Due to ongoing email issues, please CC * * navobsy_eop.fct@navy.mil * * until further notice. * * * * 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 9 3 59460 0.24387 .00009 0.32425 .00009 -0.117229 0.000014 21 9 4 59461 0.24378 .00009 0.32275 .00009 -0.116331 0.000013 21 9 5 59462 0.24323 .00009 0.32115 .00009 -0.115534 0.000017 21 9 6 59463 0.24225 .00009 0.31927 .00009 -0.114932 0.000023 21 9 7 59464 0.24115 .00009 0.31729 .00009 -0.114566 0.000025 21 9 8 59465 0.24024 .00009 0.31542 .00009 -0.114437 0.000023 21 9 9 59466 0.23951 .00009 0.31372 .00009 -0.114495 0.000021 IERS Final Values MJD x y UT1-UTC " " s 21 7 2 59397 0.2069 0.4181 -0.16674 21 7 3 59398 0.2090 0.4170 -0.16601 21 7 4 59399 0.2113 0.4158 -0.16518 21 7 5 59400 0.2134 0.4150 -0.16421 21 7 6 59401 0.2157 0.4140 -0.16309 21 7 7 59402 0.2181 0.4132 -0.16183 21 7 8 59403 0.2202 0.4121 -0.16046 21 7 9 59404 0.2218 0.4108 -0.15902 21 7 10 59405 0.2236 0.4091 -0.15759 21 7 11 59406 0.2257 0.4076 -0.15622 21 7 12 59407 0.2275 0.4065 -0.15497 21 7 13 59408 0.2294 0.4057 -0.15390 21 7 14 59409 0.2309 0.4052 -0.15306 21 7 15 59410 0.2324 0.4042 -0.15242 21 7 16 59411 0.2339 0.4031 -0.15200 21 7 17 59412 0.2356 0.4023 -0.15174 21 7 18 59413 0.2369 0.4016 -0.15152 21 7 19 59414 0.2384 0.4003 -0.15120 21 7 20 59415 0.2399 0.3989 -0.15071 21 7 21 59416 0.2414 0.3976 -0.15006 21 7 22 59417 0.2425 0.3963 -0.14927 21 7 23 59418 0.2436 0.3948 -0.14839 21 7 24 59419 0.2445 0.3934 -0.14752 21 7 25 59420 0.2447 0.3921 -0.14674 21 7 26 59421 0.2443 0.3908 -0.14607 21 7 27 59422 0.2440 0.3893 -0.14554 21 7 28 59423 0.2440 0.3870 -0.14512 21 7 29 59424 0.2443 0.3845 -0.14475 21 7 30 59425 0.2451 0.3825 -0.14437 21 7 31 59426 0.2460 0.3811 -0.14392 21 8 1 59427 0.2468 0.3802 -0.14335 _______________________________________________________________________ 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 = 0.1313 + 0.1193 cos A - 0.0120 sin A - 0.0185 cos C - 0.0427 sin C y = 0.3563 - 0.0005 cos A - 0.1092 sin A - 0.0427 cos C + 0.0185 sin C UT1-UTC = -0.1503 + 0.00023 (MJD - 59474) - (UT2-UT1) where A = 2*pi*(MJD-59466)/365.25 and C = 2*pi*(MJD-59466)/435. TAI-UTC(MJD 59467) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59466)**0.80 S t = 0.00025 (MJD-59466)**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 9 10 59467 0.2389 0.3121 -0.11458 2021 9 11 59468 0.2383 0.3106 -0.11458 2021 9 12 59469 0.2376 0.3091 -0.11438 2021 9 13 59470 0.2369 0.3077 -0.11394 2021 9 14 59471 0.2360 0.3062 -0.11329 2021 9 15 59472 0.2351 0.3048 -0.11249 2021 9 16 59473 0.2343 0.3033 -0.11165 2021 9 17 59474 0.2334 0.3018 -0.11088 2021 9 18 59475 0.2325 0.3003 -0.11028 2021 9 19 59476 0.2316 0.2989 -0.10989 2021 9 20 59477 0.2307 0.2974 -0.10971 2021 9 21 59478 0.2297 0.2960 -0.10967 2021 9 22 59479 0.2287 0.2946 -0.10970 2021 9 23 59480 0.2277 0.2932 -0.10972 2021 9 24 59481 0.2266 0.2918 -0.10967 2021 9 25 59482 0.2256 0.2905 -0.10951 2021 9 26 59483 0.2245 0.2891 -0.10921 2021 9 27 59484 0.2234 0.2878 -0.10876 2021 9 28 59485 0.2223 0.2865 -0.10817 2021 9 29 59486 0.2212 0.2852 -0.10751 2021 9 30 59487 0.2200 0.2839 -0.10683 2021 10 1 59488 0.2187 0.2826 -0.10621 2021 10 2 59489 0.2175 0.2814 -0.10573 2021 10 3 59490 0.2162 0.2801 -0.10548 2021 10 4 59491 0.2149 0.2789 -0.10551 2021 10 5 59492 0.2136 0.2776 -0.10582 2021 10 6 59493 0.2122 0.2764 -0.10636 2021 10 7 59494 0.2109 0.2752 -0.10702 2021 10 8 59495 0.2095 0.2741 -0.10767 2021 10 9 59496 0.2080 0.2729 -0.10818 2021 10 10 59497 0.2066 0.2718 -0.10847 2021 10 11 59498 0.2051 0.2707 -0.10852 2021 10 12 59499 0.2036 0.2696 -0.10842 2021 10 13 59500 0.2021 0.2686 -0.10826 2021 10 14 59501 0.2006 0.2675 -0.10816 2021 10 15 59502 0.1990 0.2665 -0.10821 2021 10 16 59503 0.1974 0.2655 -0.10845 2021 10 17 59504 0.1958 0.2646 -0.10889 2021 10 18 59505 0.1942 0.2636 -0.10946 2021 10 19 59506 0.1926 0.2627 -0.11012 2021 10 20 59507 0.1909 0.2618 -0.11077 2021 10 21 59508 0.1893 0.2609 -0.11134 2021 10 22 59509 0.1876 0.2600 -0.11178 2021 10 23 59510 0.1859 0.2592 -0.11206 2021 10 24 59511 0.1841 0.2584 -0.11215 2021 10 25 59512 0.1824 0.2576 -0.11209 2021 10 26 59513 0.1806 0.2569 -0.11191 2021 10 27 59514 0.1789 0.2561 -0.11167 2021 10 28 59515 0.1771 0.2554 -0.11145 2021 10 29 59516 0.1753 0.2547 -0.11131 2021 10 30 59517 0.1735 0.2541 -0.11134 2021 10 31 59518 0.1716 0.2535 -0.11160 2021 11 1 59519 0.1698 0.2529 -0.11213 2021 11 2 59520 0.1679 0.2523 -0.11290 2021 11 3 59521 0.1661 0.2517 -0.11383 2021 11 4 59522 0.1642 0.2512 -0.11481 2021 11 5 59523 0.1623 0.2507 -0.11567 2021 11 6 59524 0.1604 0.2503 -0.11629 2021 11 7 59525 0.1585 0.2498 -0.11664 2021 11 8 59526 0.1566 0.2494 -0.11675 2021 11 9 59527 0.1546 0.2490 -0.11674 2021 11 10 59528 0.1527 0.2487 -0.11672 2021 11 11 59529 0.1507 0.2483 -0.11680 2021 11 12 59530 0.1488 0.2480 -0.11704 2021 11 13 59531 0.1468 0.2478 -0.11744 2021 11 14 59532 0.1449 0.2475 -0.11798 2021 11 15 59533 0.1429 0.2473 -0.11859 2021 11 16 59534 0.1409 0.2471 -0.11921 2021 11 17 59535 0.1389 0.2470 -0.11977 2021 11 18 59536 0.1369 0.2469 -0.12021 2021 11 19 59537 0.1350 0.2468 -0.12050 2021 11 20 59538 0.1330 0.2467 -0.12061 2021 11 21 59539 0.1310 0.2467 -0.12055 2021 11 22 59540 0.1290 0.2466 -0.12036 2021 11 23 59541 0.1270 0.2467 -0.12008 2021 11 24 59542 0.1250 0.2467 -0.11979 2021 11 25 59543 0.1230 0.2468 -0.11955 2021 11 26 59544 0.1210 0.2469 -0.11944 2021 11 27 59545 0.1190 0.2471 -0.11951 2021 11 28 59546 0.1170 0.2472 -0.11980 2021 11 29 59547 0.1150 0.2474 -0.12032 2021 11 30 59548 0.1130 0.2476 -0.12103 2021 12 1 59549 0.1110 0.2479 -0.12183 2021 12 2 59550 0.1090 0.2482 -0.12259 2021 12 3 59551 0.1070 0.2485 -0.12317 2021 12 4 59552 0.1050 0.2489 -0.12349 2021 12 5 59553 0.1031 0.2492 -0.12354 2021 12 6 59554 0.1011 0.2496 -0.12340 2021 12 7 59555 0.0991 0.2501 -0.12320 2021 12 8 59556 0.0972 0.2505 -0.12306 2021 12 9 59557 0.0952 0.2510 -0.12307 2021 12 10 59558 0.0933 0.2515 -0.12323 2021 12 11 59559 0.0913 0.2521 -0.12353 2021 12 12 59560 0.0894 0.2527 -0.12388 2021 12 13 59561 0.0875 0.2533 -0.12423 2021 12 14 59562 0.0856 0.2539 -0.12451 2021 12 15 59563 0.0837 0.2546 -0.12466 2021 12 16 59564 0.0818 0.2553 -0.12465 2021 12 17 59565 0.0800 0.2560 -0.12446 2021 12 18 59566 0.0781 0.2568 -0.12409 2021 12 19 59567 0.0762 0.2575 -0.12357 2021 12 20 59568 0.0744 0.2583 -0.12295 2021 12 21 59569 0.0726 0.2592 -0.12230 2021 12 22 59570 0.0708 0.2600 -0.12169 2021 12 23 59571 0.0690 0.2609 -0.12119 2021 12 24 59572 0.0672 0.2618 -0.12085 2021 12 25 59573 0.0655 0.2628 -0.12072 2021 12 26 59574 0.0637 0.2637 -0.12079 2021 12 27 59575 0.0620 0.2647 -0.12107 2021 12 28 59576 0.0603 0.2658 -0.12148 2021 12 29 59577 0.0586 0.2668 -0.12190 2021 12 30 59578 0.0569 0.2679 -0.12222 2021 12 31 59579 0.0553 0.2690 -0.12232 2022 1 1 59580 0.0536 0.2701 -0.12219 2022 1 2 59581 0.0520 0.2712 -0.12185 2022 1 3 59582 0.0504 0.2724 -0.12141 2022 1 4 59583 0.0489 0.2736 -0.12101 2022 1 5 59584 0.0473 0.2748 -0.12076 2022 1 6 59585 0.0458 0.2761 -0.12070 2022 1 7 59586 0.0443 0.2773 -0.12081 2022 1 8 59587 0.0428 0.2786 -0.12104 2022 1 9 59588 0.0413 0.2799 -0.12129 2022 1 10 59589 0.0399 0.2813 -0.12149 2022 1 11 59590 0.0385 0.2826 -0.12157 2022 1 12 59591 0.0371 0.2840 -0.12151 2022 1 13 59592 0.0357 0.2854 -0.12127 2022 1 14 59593 0.0343 0.2868 -0.12087 2022 1 15 59594 0.0330 0.2883 -0.12033 2022 1 16 59595 0.0317 0.2897 -0.11970 2022 1 17 59596 0.0305 0.2912 -0.11903 2022 1 18 59597 0.0292 0.2927 -0.11840 2022 1 19 59598 0.0280 0.2942 -0.11789 2022 1 20 59599 0.0268 0.2957 -0.11754 2022 1 21 59600 0.0257 0.2973 -0.11740 2022 1 22 59601 0.0245 0.2989 -0.11748 2022 1 23 59602 0.0234 0.3005 -0.11773 2022 1 24 59603 0.0224 0.3021 -0.11811 2022 1 25 59604 0.0213 0.3037 -0.11852 2022 1 26 59605 0.0203 0.3053 -0.11886 2022 1 27 59606 0.0193 0.3070 -0.11904 2022 1 28 59607 0.0184 0.3087 -0.11900 2022 1 29 59608 0.0174 0.3104 -0.11877 2022 1 30 59609 0.0165 0.3121 -0.11841 2022 1 31 59610 0.0157 0.3138 -0.11806 2022 2 1 59611 0.0148 0.3155 -0.11783 2022 2 2 59612 0.0140 0.3172 -0.11782 2022 2 3 59613 0.0132 0.3190 -0.11802 2022 2 4 59614 0.0125 0.3208 -0.11839 2022 2 5 59615 0.0118 0.3225 -0.11884 2022 2 6 59616 0.0111 0.3243 -0.11926 2022 2 7 59617 0.0105 0.3261 -0.11958 2022 2 8 59618 0.0099 0.3280 -0.11974 2022 2 9 59619 0.0093 0.3298 -0.11973 2022 2 10 59620 0.0087 0.3316 -0.11955 2022 2 11 59621 0.0082 0.3334 -0.11921 2022 2 12 59622 0.0077 0.3353 -0.11876 2022 2 13 59623 0.0073 0.3372 -0.11827 2022 2 14 59624 0.0069 0.3390 -0.11780 2022 2 15 59625 0.0065 0.3409 -0.11743 2022 2 16 59626 0.0061 0.3428 -0.11722 2022 2 17 59627 0.0058 0.3446 -0.11723 2022 2 18 59628 0.0055 0.3465 -0.11746 2022 2 19 59629 0.0053 0.3484 -0.11790 2022 2 20 59630 0.0051 0.3503 -0.11847 2022 2 21 59631 0.0049 0.3522 -0.11908 2022 2 22 59632 0.0048 0.3541 -0.11962 2022 2 23 59633 0.0047 0.3560 -0.12001 2022 2 24 59634 0.0046 0.3580 -0.12018 2022 2 25 59635 0.0045 0.3599 -0.12015 2022 2 26 59636 0.0045 0.3618 -0.11999 2022 2 27 59637 0.0046 0.3637 -0.11979 2022 2 28 59638 0.0046 0.3656 -0.11969 2022 3 1 59639 0.0047 0.3675 -0.11977 2022 3 2 59640 0.0049 0.3694 -0.12010 2022 3 3 59641 0.0050 0.3714 -0.12065 2022 3 4 59642 0.0052 0.3733 -0.12133 2022 3 5 59643 0.0055 0.3752 -0.12205 2022 3 6 59644 0.0057 0.3771 -0.12271 2022 3 7 59645 0.0061 0.3790 -0.12325 2022 3 8 59646 0.0064 0.3809 -0.12361 2022 3 9 59647 0.0068 0.3828 -0.12380 2022 3 10 59648 0.0072 0.3847 -0.12384 2022 3 11 59649 0.0076 0.3866 -0.12376 2022 3 12 59650 0.0081 0.3885 -0.12363 2022 3 13 59651 0.0086 0.3903 -0.12351 2022 3 14 59652 0.0092 0.3922 -0.12349 2022 3 15 59653 0.0097 0.3941 -0.12362 2022 3 16 59654 0.0103 0.3959 -0.12397 2022 3 17 59655 0.0110 0.3978 -0.12454 2022 3 18 59656 0.0117 0.3996 -0.12531 2022 3 19 59657 0.0124 0.4014 -0.12621 2022 3 20 59658 0.0131 0.4032 -0.12712 2022 3 21 59659 0.0139 0.4050 -0.12791 2022 3 22 59660 0.0147 0.4068 -0.12847 2022 3 23 59661 0.0155 0.4086 -0.12875 2022 3 24 59662 0.0164 0.4104 -0.12875 2022 3 25 59663 0.0173 0.4121 -0.12853 2022 3 26 59664 0.0183 0.4139 -0.12821 2022 3 27 59665 0.0192 0.4156 -0.12791 2022 3 28 59666 0.0202 0.4174 -0.12776 2022 3 29 59667 0.0213 0.4191 -0.12781 2022 3 30 59668 0.0223 0.4207 -0.12809 2022 3 31 59669 0.0234 0.4224 -0.12855 2022 4 1 59670 0.0245 0.4241 -0.12910 2022 4 2 59671 0.0257 0.4257 -0.12963 2022 4 3 59672 0.0269 0.4274 -0.13006 2022 4 4 59673 0.0281 0.4290 -0.13031 2022 4 5 59674 0.0293 0.4306 -0.13035 2022 4 6 59675 0.0306 0.4321 -0.13019 2022 4 7 59676 0.0319 0.4337 -0.12984 2022 4 8 59677 0.0332 0.4352 -0.12935 2022 4 9 59678 0.0346 0.4368 -0.12881 2022 4 10 59679 0.0359 0.4383 -0.12829 2022 4 11 59680 0.0373 0.4397 -0.12788 2022 4 12 59681 0.0388 0.4412 -0.12766 2022 4 13 59682 0.0402 0.4426 -0.12770 2022 4 14 59683 0.0417 0.4441 -0.12804 2022 4 15 59684 0.0432 0.4455 -0.12866 2022 4 16 59685 0.0448 0.4468 -0.12947 2022 4 17 59686 0.0463 0.4482 -0.13036 2022 4 18 59687 0.0479 0.4495 -0.13120 2022 4 19 59688 0.0495 0.4508 -0.13185 2022 4 20 59689 0.0511 0.4521 -0.13227 2022 4 21 59690 0.0528 0.4534 -0.13247 2022 4 22 59691 0.0545 0.4546 -0.13254 2022 4 23 59692 0.0561 0.4558 -0.13259 2022 4 24 59693 0.0579 0.4570 -0.13275 2022 4 25 59694 0.0596 0.4582 -0.13310 2022 4 26 59695 0.0614 0.4593 -0.13359 2022 4 27 59696 0.0631 0.4604 -0.13420 2022 4 28 59697 0.0649 0.4615 -0.13488 2022 4 29 59698 0.0668 0.4626 -0.13553 2022 4 30 59699 0.0686 0.4636 -0.13610 2022 5 1 59700 0.0704 0.4646 -0.13650 2022 5 2 59701 0.0723 0.4656 -0.13669 2022 5 3 59702 0.0742 0.4666 -0.13662 2022 5 4 59703 0.0761 0.4675 -0.13629 2022 5 5 59704 0.0780 0.4684 -0.13574 2022 5 6 59705 0.0800 0.4693 -0.13512 2022 5 7 59706 0.0819 0.4701 -0.13452 2022 5 8 59707 0.0839 0.4709 -0.13388 2022 5 9 59708 0.0859 0.4717 -0.13331 2022 5 10 59709 0.0879 0.4724 -0.13296 2022 5 11 59710 0.0899 0.4732 -0.13283 2022 5 12 59711 0.0919 0.4739 -0.13293 2022 5 13 59712 0.0939 0.4745 -0.13319 2022 5 14 59713 0.0959 0.4752 -0.13344 2022 5 15 59714 0.0980 0.4758 -0.13360 2022 5 16 59715 0.1001 0.4763 -0.13354 2022 5 17 59716 0.1021 0.4769 -0.13320 2022 5 18 59717 0.1042 0.4774 -0.13262 2022 5 19 59718 0.1063 0.4779 -0.13187 2022 5 20 59719 0.1084 0.4783 -0.13105 2022 5 21 59720 0.1105 0.4788 -0.13044 2022 5 22 59721 0.1126 0.4792 -0.12999 2022 5 23 59722 0.1147 0.4795 -0.12973 2022 5 24 59723 0.1169 0.4798 -0.12961 2022 5 25 59724 0.1190 0.4801 -0.12951 2022 5 26 59725 0.1211 0.4804 -0.12936 2022 5 27 59726 0.1232 0.4806 -0.12916 2022 5 28 59727 0.1254 0.4808 -0.12884 2022 5 29 59728 0.1275 0.4810 -0.12830 2022 5 30 59729 0.1297 0.4812 -0.12752 2022 5 31 59730 0.1318 0.4813 -0.12655 2022 6 1 59731 0.1340 0.4813 -0.12542 2022 6 2 59732 0.1361 0.4814 -0.12423 2022 6 3 59733 0.1382 0.4814 -0.12301 2022 6 4 59734 0.1404 0.4814 -0.12185 2022 6 5 59735 0.1425 0.4813 -0.12084 2022 6 6 59736 0.1447 0.4812 -0.12004 2022 6 7 59737 0.1468 0.4811 -0.11941 2022 6 8 59738 0.1490 0.4810 -0.11894 2022 6 9 59739 0.1511 0.4808 -0.11865 2022 6 10 59740 0.1532 0.4806 -0.11848 2022 6 11 59741 0.1553 0.4804 -0.11832 2022 6 12 59742 0.1574 0.4801 -0.11804 2022 6 13 59743 0.1596 0.4798 -0.11761 2022 6 14 59744 0.1617 0.4794 -0.11686 2022 6 15 59745 0.1638 0.4791 -0.11585 2022 6 16 59746 0.1658 0.4787 -0.11471 2022 6 17 59747 0.1679 0.4783 -0.11358 2022 6 18 59748 0.1700 0.4778 -0.11261 2022 6 19 59749 0.1721 0.4773 -0.11179 2022 6 20 59750 0.1741 0.4768 -0.11118 2022 6 21 59751 0.1762 0.4762 -0.11068 2022 6 22 59752 0.1782 0.4757 -0.11020 2022 6 23 59753 0.1802 0.4750 -0.10962 2022 6 24 59754 0.1822 0.4744 -0.10892 2022 6 25 59755 0.1842 0.4737 -0.10810 2022 6 26 59756 0.1862 0.4730 -0.10710 2022 6 27 59757 0.1881 0.4723 -0.10595 2022 6 28 59758 0.1901 0.4715 -0.10466 2022 6 29 59759 0.1920 0.4707 -0.10328 2022 6 30 59760 0.1939 0.4699 -0.10187 2022 7 1 59761 0.1958 0.4691 -0.10043 2022 7 2 59762 0.1977 0.4682 -0.09906 2022 7 3 59763 0.1996 0.4673 -0.09783 2022 7 4 59764 0.2015 0.4664 -0.09681 2022 7 5 59765 0.2033 0.4654 -0.09597 2022 7 6 59766 0.2051 0.4644 -0.09526 2022 7 7 59767 0.2069 0.4634 -0.09463 2022 7 8 59768 0.2087 0.4624 -0.09404 2022 7 9 59769 0.2104 0.4613 -0.09334 2022 7 10 59770 0.2122 0.4602 -0.09257 2022 7 11 59771 0.2139 0.4591 -0.09156 2022 7 12 59772 0.2156 0.4580 -0.09032 2022 7 13 59773 0.2172 0.4568 -0.08890 2022 7 14 59774 0.2189 0.4556 -0.08742 2022 7 15 59775 0.2205 0.4544 -0.08605 2022 7 16 59776 0.2221 0.4531 -0.08493 2022 7 17 59777 0.2237 0.4519 -0.08406 2022 7 18 59778 0.2253 0.4506 -0.08341 2022 7 19 59779 0.2268 0.4493 -0.08280 2022 7 20 59780 0.2283 0.4479 -0.08213 2022 7 21 59781 0.2298 0.4466 -0.08135 2022 7 22 59782 0.2312 0.4452 -0.08037 2022 7 23 59783 0.2326 0.4438 -0.07922 2022 7 24 59784 0.2340 0.4424 -0.07788 2022 7 25 59785 0.2354 0.4409 -0.07641 2022 7 26 59786 0.2368 0.4394 -0.07488 2022 7 27 59787 0.2381 0.4380 -0.07326 2022 7 28 59788 0.2394 0.4365 -0.07160 2022 7 29 59789 0.2406 0.4349 -0.07003 2022 7 30 59790 0.2419 0.4334 -0.06868 2022 7 31 59791 0.2431 0.4318 -0.06757 2022 8 1 59792 0.2442 0.4302 -0.06670 2022 8 2 59793 0.2454 0.4286 -0.06597 2022 8 3 59794 0.2465 0.4270 -0.06536 2022 8 4 59795 0.2476 0.4254 -0.06476 2022 8 5 59796 0.2486 0.4237 -0.06408 2022 8 6 59797 0.2496 0.4221 -0.06325 2022 8 7 59798 0.2506 0.4204 -0.06230 2022 8 8 59799 0.2516 0.4187 -0.06120 2022 8 9 59800 0.2525 0.4170 -0.05998 2022 8 10 59801 0.2534 0.4153 -0.05877 2022 8 11 59802 0.2543 0.4135 -0.05775 2022 8 12 59803 0.2551 0.4118 -0.05700 2022 8 13 59804 0.2559 0.4100 -0.05651 2022 8 14 59805 0.2567 0.4083 -0.05616 2022 8 15 59806 0.2574 0.4065 -0.05587 2022 8 16 59807 0.2581 0.4047 -0.05553 2022 8 17 59808 0.2587 0.4029 -0.05506 2022 8 18 59809 0.2594 0.4010 -0.05442 2022 8 19 59810 0.2600 0.3992 -0.05348 2022 8 20 59811 0.2605 0.3974 -0.05230 2022 8 21 59812 0.2610 0.3955 -0.05090 2022 8 22 59813 0.2615 0.3937 -0.04940 2022 8 23 59814 0.2620 0.3918 -0.04782 2022 8 24 59815 0.2624 0.3900 -0.04624 2022 8 25 59816 0.2628 0.3881 -0.04480 2022 8 26 59817 0.2632 0.3862 -0.04349 2022 8 27 59818 0.2635 0.3843 -0.04234 2022 8 28 59819 0.2638 0.3825 -0.04146 2022 8 29 59820 0.2640 0.3806 -0.04081 2022 8 30 59821 0.2642 0.3787 -0.04031 2022 8 31 59822 0.2644 0.3768 -0.03987 2022 9 1 59823 0.2645 0.3749 -0.03935 2022 9 2 59824 0.2646 0.3730 -0.03865 2022 9 3 59825 0.2647 0.3711 -0.03774 2022 9 4 59826 0.2648 0.3691 -0.03667 2022 9 5 59827 0.2648 0.3672 -0.03547 2022 9 6 59828 0.2647 0.3653 -0.03426 2022 9 7 59829 0.2647 0.3634 -0.03313 2022 9 8 59830 0.2646 0.3615 -0.03235 2022 9 9 59831 0.2644 0.3596 -0.03199 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) 59445 -118.14 0.70 -9.56 0.14 59446 -117.82 0.70 -9.54 0.14 59447 -117.60 0.70 -9.49 0.14 59448 -117.46 1.06 -9.48 0.12 59449 -117.36 1.06 -9.48 0.12 59450 -117.29 1.11 -9.41 0.11 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 59397 -112.0 -9.5 59398 -112.1 -9.4 59399 -112.4 -9.4 59400 -112.7 -9.3 59401 -113.0 -9.4 59402 -113.1 -9.6 59403 -113.2 -9.9 59404 -113.3 -10.1 59405 -113.3 -10.1 59406 -113.3 -9.9 59407 -113.4 -9.8 59408 -113.5 -9.7 59409 -113.6 -9.8 59410 -113.6 -9.8 59411 -113.6 -9.8 59412 -113.8 -9.6 59413 -114.3 -9.4 59414 -115.0 -9.3 59415 -115.6 -9.3 59416 -115.9 -9.5 59417 -115.7 -9.6 59418 -115.5 -9.6 59419 -115.3 -9.6 59420 -115.3 -9.7 59421 -115.3 -9.9 59422 -115.5 -9.9 59423 -115.8 -9.8 59424 -116.2 -9.5 59425 -116.6 -9.4 59426 -116.8 -9.4 59427 -116.8 -9.4 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59445 0.272 0.279 -0.142 0.142 59446 0.302 0.279 -0.138 0.142 59447 0.333 0.279 -0.133 0.142 59448 0.365 0.421 -0.128 0.123 59449 0.398 0.421 -0.123 0.123 59450 0.431 0.443 -0.117 0.114 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 59397 0.20 -0.12 59398 0.21 -0.12 59399 0.23 -0.11 59400 0.26 -0.11 59401 0.28 -0.10 59402 0.30 -0.09 59403 0.28 -0.08 59404 0.24 -0.06 59405 0.24 -0.06 59406 0.24 -0.06 59407 0.25 -0.06 59408 0.26 -0.07 59409 0.24 -0.07 59410 0.22 -0.08 59411 0.19 -0.09 59412 0.19 -0.10 59413 0.20 -0.11 59414 0.20 -0.12 59415 0.21 -0.14 59416 0.22 -0.14 59417 0.24 -0.14 59418 0.26 -0.15 59419 0.24 -0.14 59420 0.20 -0.12 59421 0.17 -0.10 59422 0.13 -0.09 59423 0.13 -0.08 59424 0.14 -0.07 59425 0.15 -0.07 59426 0.18 -0.08 59427 0.22 -0.10 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).