********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 7 October 2021 Vol. XXXIV No. 040 ______________________________________________________________________ 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 10 1 59488 0.21993 .00009 0.27982 .00009 -0.105249 0.000062 21 10 2 59489 0.21915 .00009 0.27848 .00009 -0.104695 0.000055 21 10 3 59490 0.21804 .00009 0.27740 .00009 -0.104332 0.000057 21 10 4 59491 0.21654 .00009 0.27639 .00009 -0.104141 0.000040 21 10 5 59492 0.21482 .00009 0.27530 .00009 -0.104195 0.000035 21 10 6 59493 0.21285 .00009 0.27399 .00009 -0.104520 0.000027 21 10 7 59494 0.21070 .00009 0.27233 .00009 -0.105076 0.000024 IERS Final Values MJD x y UT1-UTC " " s 21 8 2 59428 0.2477 0.3790 -0.14266 21 8 3 59429 0.2487 0.3777 -0.14183 21 8 4 59430 0.2492 0.3762 -0.14088 21 8 5 59431 0.2503 0.3747 -0.13986 21 8 6 59432 0.2516 0.3734 -0.13883 21 8 7 59433 0.2524 0.3722 -0.13780 21 8 8 59434 0.2526 0.3710 -0.13675 21 8 9 59435 0.2520 0.3695 -0.13582 21 8 10 59436 0.2508 0.3675 -0.13507 21 8 11 59437 0.2502 0.3653 -0.13451 21 8 12 59438 0.2499 0.3633 -0.13412 21 8 13 59439 0.2496 0.3615 -0.13383 21 8 14 59440 0.2492 0.3597 -0.13355 21 8 15 59441 0.2487 0.3581 -0.13315 21 8 16 59442 0.2483 0.3565 -0.13257 21 8 17 59443 0.2481 0.3549 -0.13175 21 8 18 59444 0.2480 0.3533 -0.13072 21 8 19 59445 0.2480 0.3517 -0.12955 21 8 20 59446 0.2477 0.3501 -0.12836 21 8 21 59447 0.2473 0.3483 -0.12726 21 8 22 59448 0.2468 0.3466 -0.12634 21 8 23 59449 0.2463 0.3446 -0.12558 21 8 24 59450 0.2460 0.3422 -0.12496 21 8 25 59451 0.2460 0.3401 -0.12447 21 8 26 59452 0.2460 0.3383 -0.12402 21 8 27 59453 0.2460 0.3365 -0.12351 21 8 28 59454 0.2461 0.3347 -0.12289 21 8 29 59455 0.2460 0.3332 -0.12214 21 8 30 59456 0.2458 0.3317 -0.12128 21 8 31 59457 0.2451 0.3299 -0.12033 21 9 1 59458 0.2443 0.3278 -0.11931 _______________________________________________________________________ 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 = 0.1368 + 0.1034 cos A - 0.0609 sin A - 0.0341 cos C - 0.0375 sin C y = 0.3573 - 0.0470 cos A - 0.0997 sin A - 0.0375 cos C + 0.0341 sin C UT1-UTC = -0.1350 + 0.00023 (MJD - 59502) - (UT2-UT1) where A = 2*pi*(MJD-59494)/365.25 and C = 2*pi*(MJD-59494)/435. TAI-UTC(MJD 59495) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59494)**0.80 S t = 0.00025 (MJD-59494)**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 10 8 59495 0.2088 0.2706 -0.10559 2021 10 9 59496 0.2071 0.2690 -0.10595 2021 10 10 59497 0.2054 0.2675 -0.10607 2021 10 11 59498 0.2038 0.2662 -0.10595 2021 10 12 59499 0.2022 0.2650 -0.10564 2021 10 13 59500 0.2006 0.2640 -0.10528 2021 10 14 59501 0.1989 0.2629 -0.10495 2021 10 15 59502 0.1973 0.2619 -0.10475 2021 10 16 59503 0.1957 0.2609 -0.10472 2021 10 17 59504 0.1941 0.2600 -0.10488 2021 10 18 59505 0.1924 0.2591 -0.10516 2021 10 19 59506 0.1908 0.2583 -0.10551 2021 10 20 59507 0.1890 0.2575 -0.10583 2021 10 21 59508 0.1873 0.2567 -0.10603 2021 10 22 59509 0.1855 0.2559 -0.10609 2021 10 23 59510 0.1838 0.2550 -0.10599 2021 10 24 59511 0.1821 0.2542 -0.10574 2021 10 25 59512 0.1804 0.2535 -0.10535 2021 10 26 59513 0.1787 0.2528 -0.10486 2021 10 27 59514 0.1770 0.2522 -0.10431 2021 10 28 59515 0.1753 0.2516 -0.10378 2021 10 29 59516 0.1736 0.2510 -0.10335 2021 10 30 59517 0.1718 0.2504 -0.10308 2021 10 31 59518 0.1701 0.2499 -0.10304 2021 11 1 59519 0.1683 0.2494 -0.10327 2021 11 2 59520 0.1664 0.2489 -0.10374 2021 11 3 59521 0.1646 0.2484 -0.10439 2021 11 4 59522 0.1627 0.2479 -0.10506 2021 11 5 59523 0.1609 0.2475 -0.10563 2021 11 6 59524 0.1590 0.2471 -0.10598 2021 11 7 59525 0.1571 0.2467 -0.10606 2021 11 8 59526 0.1552 0.2463 -0.10590 2021 11 9 59527 0.1533 0.2460 -0.10561 2021 11 10 59528 0.1514 0.2457 -0.10531 2021 11 11 59529 0.1495 0.2454 -0.10510 2021 11 12 59530 0.1476 0.2452 -0.10505 2021 11 13 59531 0.1456 0.2450 -0.10516 2021 11 14 59532 0.1437 0.2448 -0.10540 2021 11 15 59533 0.1417 0.2446 -0.10573 2021 11 16 59534 0.1397 0.2445 -0.10606 2021 11 17 59535 0.1378 0.2444 -0.10634 2021 11 18 59536 0.1358 0.2443 -0.10651 2021 11 19 59537 0.1338 0.2443 -0.10654 2021 11 20 59538 0.1318 0.2443 -0.10642 2021 11 21 59539 0.1298 0.2443 -0.10616 2021 11 22 59540 0.1278 0.2443 -0.10578 2021 11 23 59541 0.1258 0.2444 -0.10534 2021 11 24 59542 0.1239 0.2445 -0.10491 2021 11 25 59543 0.1219 0.2446 -0.10455 2021 11 26 59544 0.1199 0.2448 -0.10434 2021 11 27 59545 0.1179 0.2450 -0.10434 2021 11 28 59546 0.1159 0.2452 -0.10458 2021 11 29 59547 0.1139 0.2455 -0.10506 2021 11 30 59548 0.1119 0.2458 -0.10573 2021 12 1 59549 0.1100 0.2461 -0.10650 2021 12 2 59550 0.1080 0.2464 -0.10722 2021 12 3 59551 0.1060 0.2468 -0.10778 2021 12 4 59552 0.1040 0.2472 -0.10806 2021 12 5 59553 0.1021 0.2476 -0.10809 2021 12 6 59554 0.1001 0.2481 -0.10792 2021 12 7 59555 0.0982 0.2486 -0.10768 2021 12 8 59556 0.0962 0.2491 -0.10751 2021 12 9 59557 0.0943 0.2496 -0.10748 2021 12 10 59558 0.0924 0.2502 -0.10761 2021 12 11 59559 0.0905 0.2508 -0.10787 2021 12 12 59560 0.0886 0.2514 -0.10821 2021 12 13 59561 0.0867 0.2521 -0.10855 2021 12 14 59562 0.0848 0.2528 -0.10884 2021 12 15 59563 0.0829 0.2535 -0.10901 2021 12 16 59564 0.0810 0.2542 -0.10903 2021 12 17 59565 0.0792 0.2550 -0.10888 2021 12 18 59566 0.0773 0.2558 -0.10857 2021 12 19 59567 0.0755 0.2566 -0.10812 2021 12 20 59568 0.0737 0.2575 -0.10758 2021 12 21 59569 0.0719 0.2584 -0.10702 2021 12 22 59570 0.0701 0.2593 -0.10651 2021 12 23 59571 0.0683 0.2602 -0.10612 2021 12 24 59572 0.0666 0.2612 -0.10590 2021 12 25 59573 0.0648 0.2622 -0.10589 2021 12 26 59574 0.0631 0.2632 -0.10609 2021 12 27 59575 0.0614 0.2642 -0.10649 2021 12 28 59576 0.0597 0.2653 -0.10700 2021 12 29 59577 0.0580 0.2664 -0.10754 2021 12 30 59578 0.0564 0.2675 -0.10797 2021 12 31 59579 0.0548 0.2687 -0.10821 2022 1 1 59580 0.0531 0.2698 -0.10820 2022 1 2 59581 0.0515 0.2710 -0.10799 2022 1 3 59582 0.0500 0.2722 -0.10768 2022 1 4 59583 0.0484 0.2735 -0.10741 2022 1 5 59584 0.0469 0.2747 -0.10727 2022 1 6 59585 0.0454 0.2760 -0.10732 2022 1 7 59586 0.0439 0.2773 -0.10754 2022 1 8 59587 0.0424 0.2787 -0.10787 2022 1 9 59588 0.0410 0.2800 -0.10822 2022 1 10 59589 0.0395 0.2814 -0.10851 2022 1 11 59590 0.0381 0.2828 -0.10868 2022 1 12 59591 0.0368 0.2842 -0.10871 2022 1 13 59592 0.0354 0.2857 -0.10856 2022 1 14 59593 0.0341 0.2871 -0.10825 2022 1 15 59594 0.0328 0.2886 -0.10780 2022 1 16 59595 0.0315 0.2901 -0.10724 2022 1 17 59596 0.0303 0.2916 -0.10665 2022 1 18 59597 0.0290 0.2932 -0.10609 2022 1 19 59598 0.0278 0.2947 -0.10564 2022 1 20 59599 0.0267 0.2963 -0.10535 2022 1 21 59600 0.0255 0.2979 -0.10526 2022 1 22 59601 0.0244 0.2995 -0.10538 2022 1 23 59602 0.0233 0.3011 -0.10568 2022 1 24 59603 0.0223 0.3028 -0.10606 2022 1 25 59604 0.0212 0.3044 -0.10646 2022 1 26 59605 0.0203 0.3061 -0.10680 2022 1 27 59606 0.0193 0.3078 -0.10697 2022 1 28 59607 0.0183 0.3095 -0.10693 2022 1 29 59608 0.0174 0.3112 -0.10669 2022 1 30 59609 0.0166 0.3130 -0.10633 2022 1 31 59610 0.0157 0.3147 -0.10598 2022 2 1 59611 0.0149 0.3165 -0.10575 2022 2 2 59612 0.0141 0.3183 -0.10573 2022 2 3 59613 0.0134 0.3200 -0.10593 2022 2 4 59614 0.0126 0.3218 -0.10630 2022 2 5 59615 0.0119 0.3237 -0.10675 2022 2 6 59616 0.0113 0.3255 -0.10717 2022 2 7 59617 0.0107 0.3273 -0.10750 2022 2 8 59618 0.0101 0.3292 -0.10767 2022 2 9 59619 0.0095 0.3310 -0.10767 2022 2 10 59620 0.0090 0.3329 -0.10750 2022 2 11 59621 0.0085 0.3347 -0.10718 2022 2 12 59622 0.0080 0.3366 -0.10675 2022 2 13 59623 0.0076 0.3385 -0.10627 2022 2 14 59624 0.0072 0.3404 -0.10582 2022 2 15 59625 0.0068 0.3423 -0.10547 2022 2 16 59626 0.0065 0.3442 -0.10529 2022 2 17 59627 0.0062 0.3461 -0.10532 2022 2 18 59628 0.0059 0.3480 -0.10559 2022 2 19 59629 0.0057 0.3499 -0.10606 2022 2 20 59630 0.0055 0.3518 -0.10666 2022 2 21 59631 0.0053 0.3538 -0.10731 2022 2 22 59632 0.0052 0.3557 -0.10788 2022 2 23 59633 0.0051 0.3576 -0.10830 2022 2 24 59634 0.0051 0.3596 -0.10852 2022 2 25 59635 0.0050 0.3615 -0.10853 2022 2 26 59636 0.0051 0.3634 -0.10840 2022 2 27 59637 0.0051 0.3654 -0.10823 2022 2 28 59638 0.0052 0.3673 -0.10816 2022 3 1 59639 0.0053 0.3692 -0.10828 2022 3 2 59640 0.0055 0.3712 -0.10863 2022 3 3 59641 0.0056 0.3731 -0.10919 2022 3 4 59642 0.0059 0.3750 -0.10990 2022 3 5 59643 0.0061 0.3770 -0.11063 2022 3 6 59644 0.0064 0.3789 -0.11130 2022 3 7 59645 0.0067 0.3808 -0.11182 2022 3 8 59646 0.0071 0.3827 -0.11217 2022 3 9 59647 0.0075 0.3846 -0.11233 2022 3 10 59648 0.0079 0.3865 -0.11232 2022 3 11 59649 0.0083 0.3884 -0.11219 2022 3 12 59650 0.0088 0.3903 -0.11198 2022 3 13 59651 0.0094 0.3922 -0.11177 2022 3 14 59652 0.0099 0.3941 -0.11164 2022 3 15 59653 0.0105 0.3959 -0.11165 2022 3 16 59654 0.0111 0.3978 -0.11188 2022 3 17 59655 0.0118 0.3997 -0.11234 2022 3 18 59656 0.0125 0.4015 -0.11303 2022 3 19 59657 0.0132 0.4033 -0.11390 2022 3 20 59658 0.0140 0.4052 -0.11484 2022 3 21 59659 0.0148 0.4070 -0.11574 2022 3 22 59660 0.0156 0.4088 -0.11647 2022 3 23 59661 0.0165 0.4106 -0.11698 2022 3 24 59662 0.0173 0.4123 -0.11725 2022 3 25 59663 0.0183 0.4141 -0.11735 2022 3 26 59664 0.0192 0.4158 -0.11738 2022 3 27 59665 0.0202 0.4176 -0.11745 2022 3 28 59666 0.0212 0.4193 -0.11768 2022 3 29 59667 0.0223 0.4210 -0.11811 2022 3 30 59668 0.0233 0.4227 -0.11877 2022 3 31 59669 0.0244 0.4244 -0.11959 2022 4 1 59670 0.0256 0.4260 -0.12049 2022 4 2 59671 0.0267 0.4277 -0.12137 2022 4 3 59672 0.0279 0.4293 -0.12214 2022 4 4 59673 0.0292 0.4309 -0.12274 2022 4 5 59674 0.0304 0.4325 -0.12315 2022 4 6 59675 0.0317 0.4341 -0.12338 2022 4 7 59676 0.0330 0.4356 -0.12347 2022 4 8 59677 0.0343 0.4372 -0.12347 2022 4 9 59678 0.0357 0.4387 -0.12347 2022 4 10 59679 0.0371 0.4402 -0.12354 2022 4 11 59680 0.0385 0.4417 -0.12376 2022 4 12 59681 0.0400 0.4431 -0.12419 2022 4 13 59682 0.0414 0.4446 -0.12488 2022 4 14 59683 0.0429 0.4460 -0.12584 2022 4 15 59684 0.0445 0.4474 -0.12704 2022 4 16 59685 0.0460 0.4487 -0.12836 2022 4 17 59686 0.0476 0.4501 -0.12966 2022 4 18 59687 0.0492 0.4514 -0.13079 2022 4 19 59688 0.0508 0.4527 -0.13164 2022 4 20 59689 0.0524 0.4540 -0.13216 2022 4 21 59690 0.0541 0.4552 -0.13239 2022 4 22 59691 0.0558 0.4564 -0.13245 2022 4 23 59692 0.0575 0.4576 -0.13245 2022 4 24 59693 0.0592 0.4588 -0.13253 2022 4 25 59694 0.0610 0.4600 -0.13274 2022 4 26 59695 0.0627 0.4611 -0.13312 2022 4 27 59696 0.0645 0.4622 -0.13362 2022 4 28 59697 0.0663 0.4633 -0.13417 2022 4 29 59698 0.0682 0.4643 -0.13467 2022 4 30 59699 0.0700 0.4653 -0.13504 2022 5 1 59700 0.0719 0.4663 -0.13520 2022 5 2 59701 0.0738 0.4673 -0.13512 2022 5 3 59702 0.0757 0.4682 -0.13479 2022 5 4 59703 0.0776 0.4691 -0.13422 2022 5 5 59704 0.0795 0.4700 -0.13349 2022 5 6 59705 0.0815 0.4709 -0.13266 2022 5 7 59706 0.0834 0.4717 -0.13182 2022 5 8 59707 0.0854 0.4725 -0.13106 2022 5 9 59708 0.0874 0.4732 -0.13044 2022 5 10 59709 0.0894 0.4740 -0.13001 2022 5 11 59710 0.0914 0.4747 -0.12978 2022 5 12 59711 0.0935 0.4754 -0.12974 2022 5 13 59712 0.0955 0.4760 -0.12982 2022 5 14 59713 0.0976 0.4766 -0.12994 2022 5 15 59714 0.0996 0.4772 -0.12999 2022 5 16 59715 0.1017 0.4778 -0.12985 2022 5 17 59716 0.1038 0.4783 -0.12948 2022 5 18 59717 0.1059 0.4788 -0.12889 2022 5 19 59718 0.1080 0.4792 -0.12814 2022 5 20 59719 0.1101 0.4797 -0.12733 2022 5 21 59720 0.1122 0.4801 -0.12658 2022 5 22 59721 0.1143 0.4804 -0.12600 2022 5 23 59722 0.1164 0.4808 -0.12562 2022 5 24 59723 0.1186 0.4811 -0.12539 2022 5 25 59724 0.1207 0.4814 -0.12528 2022 5 26 59725 0.1229 0.4816 -0.12515 2022 5 27 59726 0.1250 0.4818 -0.12493 2022 5 28 59727 0.1272 0.4820 -0.12460 2022 5 29 59728 0.1293 0.4821 -0.12407 2022 5 30 59729 0.1315 0.4823 -0.12322 2022 5 31 59730 0.1336 0.4823 -0.12216 2022 6 1 59731 0.1358 0.4824 -0.12091 2022 6 2 59732 0.1379 0.4824 -0.11954 2022 6 3 59733 0.1401 0.4824 -0.11814 2022 6 4 59734 0.1423 0.4823 -0.11677 2022 6 5 59735 0.1444 0.4823 -0.11550 2022 6 6 59736 0.1466 0.4822 -0.11435 2022 6 7 59737 0.1487 0.4820 -0.11346 2022 6 8 59738 0.1509 0.4818 -0.11280 2022 6 9 59739 0.1530 0.4816 -0.11238 2022 6 10 59740 0.1551 0.4814 -0.11218 2022 6 11 59741 0.1573 0.4811 -0.11200 2022 6 12 59742 0.1594 0.4808 -0.11178 2022 6 13 59743 0.1615 0.4805 -0.11141 2022 6 14 59744 0.1636 0.4801 -0.11080 2022 6 15 59745 0.1658 0.4798 -0.11004 2022 6 16 59746 0.1679 0.4793 -0.10917 2022 6 17 59747 0.1699 0.4789 -0.10834 2022 6 18 59748 0.1720 0.4784 -0.10765 2022 6 19 59749 0.1741 0.4779 -0.10716 2022 6 20 59750 0.1762 0.4773 -0.10686 2022 6 21 59751 0.1782 0.4767 -0.10662 2022 6 22 59752 0.1803 0.4761 -0.10634 2022 6 23 59753 0.1823 0.4755 -0.10597 2022 6 24 59754 0.1843 0.4748 -0.10543 2022 6 25 59755 0.1863 0.4741 -0.10471 2022 6 26 59756 0.1883 0.4734 -0.10379 2022 6 27 59757 0.1903 0.4726 -0.10267 2022 6 28 59758 0.1923 0.4719 -0.10134 2022 6 29 59759 0.1942 0.4710 -0.09983 2022 6 30 59760 0.1961 0.4702 -0.09820 2022 7 1 59761 0.1980 0.4693 -0.09662 2022 7 2 59762 0.1999 0.4684 -0.09516 2022 7 3 59763 0.2018 0.4675 -0.09375 2022 7 4 59764 0.2037 0.4665 -0.09245 2022 7 5 59765 0.2055 0.4655 -0.09138 2022 7 6 59766 0.2074 0.4645 -0.09050 2022 7 7 59767 0.2092 0.4635 -0.08973 2022 7 8 59768 0.2110 0.4624 -0.08901 2022 7 9 59769 0.2127 0.4613 -0.08814 2022 7 10 59770 0.2145 0.4602 -0.08711 2022 7 11 59771 0.2162 0.4591 -0.08582 2022 7 12 59772 0.2179 0.4579 -0.08430 2022 7 13 59773 0.2196 0.4567 -0.08269 2022 7 14 59774 0.2213 0.4555 -0.08109 2022 7 15 59775 0.2229 0.4542 -0.07961 2022 7 16 59776 0.2245 0.4530 -0.07851 2022 7 17 59777 0.2261 0.4517 -0.07763 2022 7 18 59778 0.2277 0.4503 -0.07693 2022 7 19 59779 0.2292 0.4490 -0.07628 2022 7 20 59780 0.2307 0.4476 -0.07549 2022 7 21 59781 0.2322 0.4463 -0.07454 2022 7 22 59782 0.2337 0.4449 -0.07343 2022 7 23 59783 0.2351 0.4434 -0.07215 2022 7 24 59784 0.2365 0.4420 -0.07066 2022 7 25 59785 0.2379 0.4405 -0.06899 2022 7 26 59786 0.2393 0.4390 -0.06721 2022 7 27 59787 0.2406 0.4375 -0.06541 2022 7 28 59788 0.2419 0.4360 -0.06367 2022 7 29 59789 0.2432 0.4344 -0.06204 2022 7 30 59790 0.2444 0.4329 -0.06059 2022 7 31 59791 0.2457 0.4313 -0.05937 2022 8 1 59792 0.2468 0.4297 -0.05840 2022 8 2 59793 0.2480 0.4281 -0.05760 2022 8 3 59794 0.2491 0.4264 -0.05689 2022 8 4 59795 0.2502 0.4248 -0.05623 2022 8 5 59796 0.2513 0.4231 -0.05557 2022 8 6 59797 0.2523 0.4214 -0.05480 2022 8 7 59798 0.2533 0.4197 -0.05385 2022 8 8 59799 0.2543 0.4180 -0.05278 2022 8 9 59800 0.2552 0.4163 -0.05152 2022 8 10 59801 0.2561 0.4145 -0.05020 2022 8 11 59802 0.2570 0.4128 -0.04896 2022 8 12 59803 0.2579 0.4110 -0.04792 2022 8 13 59804 0.2587 0.4092 -0.04718 2022 8 14 59805 0.2595 0.4074 -0.04657 2022 8 15 59806 0.2602 0.4056 -0.04615 2022 8 16 59807 0.2609 0.4038 -0.04576 2022 8 17 59808 0.2616 0.4020 -0.04526 2022 8 18 59809 0.2622 0.4001 -0.04458 2022 8 19 59810 0.2628 0.3983 -0.04370 2022 8 20 59811 0.2634 0.3965 -0.04272 2022 8 21 59812 0.2639 0.3946 -0.04156 2022 8 22 59813 0.2645 0.3927 -0.04036 2022 8 23 59814 0.2649 0.3909 -0.03914 2022 8 24 59815 0.2654 0.3890 -0.03795 2022 8 25 59816 0.2658 0.3871 -0.03687 2022 8 26 59817 0.2661 0.3852 -0.03589 2022 8 27 59818 0.2665 0.3833 -0.03508 2022 8 28 59819 0.2668 0.3814 -0.03449 2022 8 29 59820 0.2670 0.3795 -0.03412 2022 8 30 59821 0.2673 0.3776 -0.03390 2022 8 31 59822 0.2674 0.3757 -0.03370 2022 9 1 59823 0.2676 0.3738 -0.03344 2022 9 2 59824 0.2677 0.3718 -0.03308 2022 9 3 59825 0.2678 0.3699 -0.03248 2022 9 4 59826 0.2679 0.3680 -0.03182 2022 9 5 59827 0.2679 0.3661 -0.03098 2022 9 6 59828 0.2679 0.3642 -0.03007 2022 9 7 59829 0.2678 0.3623 -0.02920 2022 9 8 59830 0.2677 0.3603 -0.02845 2022 9 9 59831 0.2676 0.3584 -0.02795 2022 9 10 59832 0.2674 0.3565 -0.02775 2022 9 11 59833 0.2672 0.3546 -0.02776 2022 9 12 59834 0.2670 0.3527 -0.02791 2022 9 13 59835 0.2667 0.3508 -0.02800 2022 9 14 59836 0.2664 0.3489 -0.02794 2022 9 15 59837 0.2661 0.3470 -0.02769 2022 9 16 59838 0.2657 0.3451 -0.02721 2022 9 17 59839 0.2653 0.3432 -0.02657 2022 9 18 59840 0.2649 0.3414 -0.02581 2022 9 19 59841 0.2644 0.3395 -0.02499 2022 9 20 59842 0.2639 0.3377 -0.02423 2022 9 21 59843 0.2634 0.3358 -0.02349 2022 9 22 59844 0.2628 0.3340 -0.02282 2022 9 23 59845 0.2622 0.3321 -0.02235 2022 9 24 59846 0.2616 0.3303 -0.02216 2022 9 25 59847 0.2609 0.3285 -0.02224 2022 9 26 59848 0.2602 0.3267 -0.02252 2022 9 27 59849 0.2594 0.3249 -0.02287 2022 9 28 59850 0.2587 0.3231 -0.02320 2022 9 29 59851 0.2579 0.3214 -0.02339 2022 9 30 59852 0.2570 0.3196 -0.02334 2022 10 1 59853 0.2562 0.3179 -0.02306 2022 10 2 59854 0.2553 0.3161 -0.02266 2022 10 3 59855 0.2543 0.3144 -0.02223 2022 10 4 59856 0.2534 0.3127 -0.02184 2022 10 5 59857 0.2524 0.3111 -0.02164 2022 10 6 59858 0.2513 0.3094 -0.02175 2022 10 7 59859 0.2503 0.3077 -0.02217 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) 59475 -117.68 0.86 -9.13 0.21 59476 -117.54 0.81 -9.09 0.19 59477 -117.53 0.81 -8.97 0.19 59478 -117.55 0.66 -8.74 0.03 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 59428 -116.9 -9.4 59429 -116.9 -9.4 59430 -117.1 -9.5 59431 -117.2 -9.7 59432 -117.2 -9.9 59433 -117.1 -10.0 59434 -117.0 -9.9 59435 -116.9 -9.7 59436 -116.9 -9.6 59437 -116.9 -9.6 59438 -117.0 -9.8 59439 -117.1 -9.9 59440 -117.3 -9.8 59441 -117.7 -9.7 59442 -118.2 -9.5 59443 -118.5 -9.5 59444 -118.5 -9.5 59445 -118.3 -9.6 59446 -118.0 -9.6 59447 -117.7 -9.5 59448 -117.6 -9.5 59449 -117.4 -9.5 59450 -117.3 -9.4 59451 -117.6 -9.3 59452 -118.0 -9.2 59453 -118.5 -9.2 59454 -118.8 -9.2 59455 -118.8 -9.2 59456 -118.7 -9.1 59457 -118.7 -9.0 59458 -118.7 -9.1 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59475 0.338 0.341 -0.164 0.212 59476 0.337 0.323 -0.147 0.185 59477 0.327 0.323 -0.123 0.185 59478 0.313 0.262 -0.095 0.033 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 59428 0.26 -0.13 59429 0.30 -0.15 59430 0.29 -0.11 59431 0.27 -0.05 59432 0.26 -0.04 59433 0.24 -0.03 59434 0.23 -0.03 59435 0.22 -0.03 59436 0.21 -0.03 59437 0.19 -0.02 59438 0.18 -0.08 59439 0.17 -0.16 59440 0.17 -0.17 59441 0.17 -0.16 59442 0.18 -0.15 59443 0.18 -0.14 59444 0.18 -0.13 59445 0.20 -0.13 59446 0.23 -0.12 59447 0.27 -0.11 59448 0.31 -0.10 59449 0.36 -0.09 59450 0.40 -0.08 59451 0.36 -0.09 59452 0.30 -0.11 59453 0.23 -0.13 59454 0.22 -0.09 59455 0.23 -0.03 59456 0.24 0.03 59457 0.25 0.09 59458 0.25 0.05 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).