********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 16 September 2021 Vol. XXXIV No. 037 ______________________________________________________________________ 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 10 59467 0.23911 .00009 0.31197 .00009 -0.114503 0.000013 21 9 11 59468 0.23897 .00009 0.31046 .00009 -0.114507 0.000017 21 9 12 59469 0.23904 .00009 0.30924 .00009 -0.114316 0.000018 21 9 13 59470 0.23887 .00009 0.30814 .00009 -0.113914 0.000019 21 9 14 59471 0.23810 .00009 0.30683 .00009 -0.113229 0.000020 21 9 15 59472 0.23681 .00009 0.30547 .00009 -0.112420 0.000020 21 9 16 59473 0.23526 .00009 0.30426 .00009 -0.111567 0.000033 _______________________________________________________________________ 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 = 0.1337 + 0.1172 cos A - 0.0257 sin A - 0.0227 cos C - 0.0411 sin C y = 0.3582 - 0.0132 cos A - 0.1086 sin A - 0.0411 cos C + 0.0227 sin C UT1-UTC = -0.1453 + 0.00023 (MJD - 59481) - (UT2-UT1) where A = 2*pi*(MJD-59473)/365.25 and C = 2*pi*(MJD-59473)/435. TAI-UTC(MJD 59474) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59473)**0.80 S t = 0.00025 (MJD-59473)**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 17 59474 0.2338 0.3029 -0.11083 2021 9 18 59475 0.2323 0.3014 -0.11026 2021 9 19 59476 0.2311 0.3000 -0.10988 2021 9 20 59477 0.2300 0.2985 -0.10964 2021 9 21 59478 0.2289 0.2971 -0.10948 2021 9 22 59479 0.2279 0.2957 -0.10934 2021 9 23 59480 0.2268 0.2943 -0.10918 2021 9 24 59481 0.2257 0.2930 -0.10894 2021 9 25 59482 0.2246 0.2917 -0.10856 2021 9 26 59483 0.2236 0.2905 -0.10803 2021 9 27 59484 0.2226 0.2892 -0.10740 2021 9 28 59485 0.2214 0.2879 -0.10669 2021 9 29 59486 0.2202 0.2867 -0.10592 2021 9 30 59487 0.2190 0.2855 -0.10515 2021 10 1 59488 0.2177 0.2843 -0.10446 2021 10 2 59489 0.2163 0.2830 -0.10392 2021 10 3 59490 0.2150 0.2817 -0.10361 2021 10 4 59491 0.2137 0.2805 -0.10357 2021 10 5 59492 0.2124 0.2792 -0.10383 2021 10 6 59493 0.2111 0.2780 -0.10432 2021 10 7 59494 0.2098 0.2768 -0.10492 2021 10 8 59495 0.2085 0.2756 -0.10548 2021 10 9 59496 0.2072 0.2745 -0.10586 2021 10 10 59497 0.2058 0.2734 -0.10597 2021 10 11 59498 0.2044 0.2723 -0.10584 2021 10 12 59499 0.2029 0.2712 -0.10552 2021 10 13 59500 0.2014 0.2701 -0.10514 2021 10 14 59501 0.1999 0.2691 -0.10481 2021 10 15 59502 0.1984 0.2681 -0.10462 2021 10 16 59503 0.1968 0.2671 -0.10462 2021 10 17 59504 0.1953 0.2661 -0.10481 2021 10 18 59505 0.1937 0.2652 -0.10515 2021 10 19 59506 0.1921 0.2642 -0.10560 2021 10 20 59507 0.1905 0.2633 -0.10608 2021 10 21 59508 0.1888 0.2624 -0.10651 2021 10 22 59509 0.1872 0.2616 -0.10683 2021 10 23 59510 0.1855 0.2607 -0.10701 2021 10 24 59511 0.1838 0.2599 -0.10704 2021 10 25 59512 0.1821 0.2592 -0.10693 2021 10 26 59513 0.1804 0.2584 -0.10674 2021 10 27 59514 0.1786 0.2577 -0.10652 2021 10 28 59515 0.1769 0.2570 -0.10634 2021 10 29 59516 0.1751 0.2564 -0.10626 2021 10 30 59517 0.1733 0.2557 -0.10636 2021 10 31 59518 0.1715 0.2551 -0.10668 2021 11 1 59519 0.1697 0.2545 -0.10725 2021 11 2 59520 0.1678 0.2539 -0.10807 2021 11 3 59521 0.1660 0.2534 -0.10904 2021 11 4 59522 0.1642 0.2529 -0.11003 2021 11 5 59523 0.1623 0.2524 -0.11090 2021 11 6 59524 0.1604 0.2519 -0.11152 2021 11 7 59525 0.1585 0.2515 -0.11185 2021 11 8 59526 0.1566 0.2511 -0.11193 2021 11 9 59527 0.1547 0.2507 -0.11187 2021 11 10 59528 0.1528 0.2504 -0.11180 2021 11 11 59529 0.1509 0.2501 -0.11183 2021 11 12 59530 0.1490 0.2498 -0.11201 2021 11 13 59531 0.1470 0.2495 -0.11237 2021 11 14 59532 0.1451 0.2493 -0.11285 2021 11 15 59533 0.1431 0.2491 -0.11340 2021 11 16 59534 0.1412 0.2489 -0.11397 2021 11 17 59535 0.1392 0.2487 -0.11447 2021 11 18 59536 0.1373 0.2486 -0.11485 2021 11 19 59537 0.1353 0.2485 -0.11508 2021 11 20 59538 0.1333 0.2485 -0.11514 2021 11 21 59539 0.1314 0.2484 -0.11504 2021 11 22 59540 0.1294 0.2484 -0.11480 2021 11 23 59541 0.1274 0.2485 -0.11450 2021 11 24 59542 0.1254 0.2485 -0.11419 2021 11 25 59543 0.1235 0.2486 -0.11395 2021 11 26 59544 0.1215 0.2487 -0.11385 2021 11 27 59545 0.1195 0.2488 -0.11393 2021 11 28 59546 0.1175 0.2490 -0.11425 2021 11 29 59547 0.1155 0.2492 -0.11481 2021 11 30 59548 0.1136 0.2494 -0.11556 2021 12 1 59549 0.1116 0.2497 -0.11640 2021 12 2 59550 0.1096 0.2500 -0.11720 2021 12 3 59551 0.1077 0.2503 -0.11781 2021 12 4 59552 0.1057 0.2507 -0.11816 2021 12 5 59553 0.1038 0.2510 -0.11824 2021 12 6 59554 0.1018 0.2514 -0.11813 2021 12 7 59555 0.0999 0.2519 -0.11795 2021 12 8 59556 0.0979 0.2523 -0.11784 2021 12 9 59557 0.0960 0.2528 -0.11788 2021 12 10 59558 0.0941 0.2534 -0.11808 2021 12 11 59559 0.0922 0.2539 -0.11841 2021 12 12 59560 0.0903 0.2545 -0.11881 2021 12 13 59561 0.0884 0.2551 -0.11921 2021 12 14 59562 0.0865 0.2557 -0.11955 2021 12 15 59563 0.0846 0.2564 -0.11977 2021 12 16 59564 0.0828 0.2571 -0.11983 2021 12 17 59565 0.0809 0.2578 -0.11971 2021 12 18 59566 0.0791 0.2586 -0.11942 2021 12 19 59567 0.0772 0.2593 -0.11898 2021 12 20 59568 0.0754 0.2601 -0.11845 2021 12 21 59569 0.0736 0.2610 -0.11789 2021 12 22 59570 0.0718 0.2618 -0.11736 2021 12 23 59571 0.0701 0.2627 -0.11693 2021 12 24 59572 0.0683 0.2636 -0.11667 2021 12 25 59573 0.0666 0.2646 -0.11659 2021 12 26 59574 0.0648 0.2655 -0.11673 2021 12 27 59575 0.0631 0.2665 -0.11704 2021 12 28 59576 0.0614 0.2675 -0.11746 2021 12 29 59577 0.0598 0.2686 -0.11788 2021 12 30 59578 0.0581 0.2696 -0.11819 2021 12 31 59579 0.0565 0.2707 -0.11830 2022 1 1 59580 0.0549 0.2718 -0.11815 2022 1 2 59581 0.0533 0.2730 -0.11779 2022 1 3 59582 0.0517 0.2742 -0.11736 2022 1 4 59583 0.0501 0.2753 -0.11697 2022 1 5 59584 0.0486 0.2766 -0.11672 2022 1 6 59585 0.0471 0.2778 -0.11667 2022 1 7 59586 0.0456 0.2791 -0.11679 2022 1 8 59587 0.0441 0.2803 -0.11702 2022 1 9 59588 0.0427 0.2816 -0.11727 2022 1 10 59589 0.0412 0.2830 -0.11747 2022 1 11 59590 0.0398 0.2843 -0.11756 2022 1 12 59591 0.0385 0.2857 -0.11749 2022 1 13 59592 0.0371 0.2871 -0.11725 2022 1 14 59593 0.0358 0.2885 -0.11684 2022 1 15 59594 0.0345 0.2899 -0.11630 2022 1 16 59595 0.0332 0.2914 -0.11565 2022 1 17 59596 0.0319 0.2928 -0.11497 2022 1 18 59597 0.0307 0.2943 -0.11433 2022 1 19 59598 0.0295 0.2958 -0.11380 2022 1 20 59599 0.0283 0.2974 -0.11343 2022 1 21 59600 0.0272 0.2989 -0.11328 2022 1 22 59601 0.0261 0.3005 -0.11334 2022 1 23 59602 0.0250 0.3021 -0.11358 2022 1 24 59603 0.0239 0.3037 -0.11394 2022 1 25 59604 0.0229 0.3053 -0.11434 2022 1 26 59605 0.0219 0.3069 -0.11466 2022 1 27 59606 0.0209 0.3086 -0.11482 2022 1 28 59607 0.0200 0.3102 -0.11478 2022 1 29 59608 0.0191 0.3119 -0.11453 2022 1 30 59609 0.0182 0.3136 -0.11417 2022 1 31 59610 0.0173 0.3153 -0.11382 2022 2 1 59611 0.0165 0.3170 -0.11359 2022 2 2 59612 0.0157 0.3187 -0.11358 2022 2 3 59613 0.0149 0.3205 -0.11379 2022 2 4 59614 0.0142 0.3222 -0.11417 2022 2 5 59615 0.0135 0.3240 -0.11462 2022 2 6 59616 0.0128 0.3258 -0.11506 2022 2 7 59617 0.0122 0.3276 -0.11539 2022 2 8 59618 0.0116 0.3294 -0.11558 2022 2 9 59619 0.0110 0.3312 -0.11560 2022 2 10 59620 0.0105 0.3330 -0.11544 2022 2 11 59621 0.0100 0.3348 -0.11512 2022 2 12 59622 0.0095 0.3367 -0.11471 2022 2 13 59623 0.0091 0.3385 -0.11424 2022 2 14 59624 0.0087 0.3404 -0.11380 2022 2 15 59625 0.0083 0.3422 -0.11346 2022 2 16 59626 0.0079 0.3441 -0.11329 2022 2 17 59627 0.0076 0.3460 -0.11333 2022 2 18 59628 0.0074 0.3478 -0.11360 2022 2 19 59629 0.0071 0.3497 -0.11407 2022 2 20 59630 0.0069 0.3516 -0.11468 2022 2 21 59631 0.0068 0.3535 -0.11532 2022 2 22 59632 0.0066 0.3554 -0.11589 2022 2 23 59633 0.0065 0.3573 -0.11631 2022 2 24 59634 0.0065 0.3592 -0.11651 2022 2 25 59635 0.0064 0.3611 -0.11651 2022 2 26 59636 0.0064 0.3630 -0.11637 2022 2 27 59637 0.0065 0.3649 -0.11620 2022 2 28 59638 0.0065 0.3668 -0.11612 2022 3 1 59639 0.0066 0.3687 -0.11622 2022 3 2 59640 0.0068 0.3706 -0.11656 2022 3 3 59641 0.0069 0.3725 -0.11711 2022 3 4 59642 0.0071 0.3744 -0.11780 2022 3 5 59643 0.0074 0.3763 -0.11851 2022 3 6 59644 0.0077 0.3782 -0.11916 2022 3 7 59645 0.0080 0.3801 -0.11967 2022 3 8 59646 0.0083 0.3819 -0.12000 2022 3 9 59647 0.0087 0.3838 -0.12014 2022 3 10 59648 0.0091 0.3857 -0.12011 2022 3 11 59649 0.0096 0.3876 -0.11996 2022 3 12 59650 0.0100 0.3894 -0.11974 2022 3 13 59651 0.0106 0.3913 -0.11953 2022 3 14 59652 0.0111 0.3931 -0.11940 2022 3 15 59653 0.0117 0.3950 -0.11944 2022 3 16 59654 0.0123 0.3968 -0.11969 2022 3 17 59655 0.0129 0.3987 -0.12020 2022 3 18 59656 0.0136 0.4005 -0.12097 2022 3 19 59657 0.0143 0.4023 -0.12193 2022 3 20 59658 0.0151 0.4041 -0.12299 2022 3 21 59659 0.0159 0.4059 -0.12402 2022 3 22 59660 0.0167 0.4076 -0.12492 2022 3 23 59661 0.0175 0.4094 -0.12560 2022 3 24 59662 0.0184 0.4112 -0.12605 2022 3 25 59663 0.0193 0.4129 -0.12631 2022 3 26 59664 0.0202 0.4146 -0.12647 2022 3 27 59665 0.0212 0.4164 -0.12661 2022 3 28 59666 0.0222 0.4181 -0.12684 2022 3 29 59667 0.0232 0.4198 -0.12722 2022 3 30 59668 0.0243 0.4214 -0.12775 2022 3 31 59669 0.0254 0.4231 -0.12840 2022 4 1 59670 0.0265 0.4247 -0.12908 2022 4 2 59671 0.0277 0.4264 -0.12969 2022 4 3 59672 0.0289 0.4280 -0.13014 2022 4 4 59673 0.0301 0.4296 -0.13038 2022 4 5 59674 0.0313 0.4311 -0.13040 2022 4 6 59675 0.0326 0.4327 -0.13020 2022 4 7 59676 0.0339 0.4342 -0.12983 2022 4 8 59677 0.0352 0.4358 -0.12935 2022 4 9 59678 0.0365 0.4373 -0.12884 2022 4 10 59679 0.0379 0.4388 -0.12837 2022 4 11 59680 0.0393 0.4402 -0.12803 2022 4 12 59681 0.0408 0.4417 -0.12787 2022 4 13 59682 0.0422 0.4431 -0.12795 2022 4 14 59683 0.0437 0.4445 -0.12828 2022 4 15 59684 0.0452 0.4459 -0.12882 2022 4 16 59685 0.0467 0.4472 -0.12948 2022 4 17 59686 0.0483 0.4486 -0.13013 2022 4 18 59687 0.0499 0.4499 -0.13063 2022 4 19 59688 0.0515 0.4512 -0.13086 2022 4 20 59689 0.0531 0.4524 -0.13079 2022 4 21 59690 0.0547 0.4537 -0.13047 2022 4 22 59691 0.0564 0.4549 -0.13001 2022 4 23 59692 0.0581 0.4561 -0.12954 2022 4 24 59693 0.0598 0.4573 -0.12916 2022 4 25 59694 0.0616 0.4584 -0.12894 2022 4 26 59695 0.0633 0.4595 -0.12895 2022 4 27 59696 0.0651 0.4606 -0.12916 2022 4 28 59697 0.0669 0.4617 -0.12953 2022 4 29 59698 0.0687 0.4627 -0.13000 2022 4 30 59699 0.0705 0.4637 -0.13041 2022 5 1 59700 0.0724 0.4647 -0.13075 2022 5 2 59701 0.0743 0.4657 -0.13097 2022 5 3 59702 0.0761 0.4666 -0.13101 2022 5 4 59703 0.0780 0.4675 -0.13092 2022 5 5 59704 0.0800 0.4684 -0.13068 2022 5 6 59705 0.0819 0.4693 -0.13035 2022 5 7 59706 0.0838 0.4701 -0.13001 2022 5 8 59707 0.0858 0.4709 -0.12973 2022 5 9 59708 0.0878 0.4716 -0.12961 2022 5 10 59709 0.0898 0.4724 -0.12962 2022 5 11 59710 0.0918 0.4731 -0.12981 2022 5 12 59711 0.0938 0.4738 -0.13019 2022 5 13 59712 0.0958 0.4744 -0.13072 2022 5 14 59713 0.0978 0.4750 -0.13130 2022 5 15 59714 0.0999 0.4756 -0.13181 2022 5 16 59715 0.1019 0.4762 -0.13211 2022 5 17 59716 0.1040 0.4767 -0.13209 2022 5 18 59717 0.1061 0.4772 -0.13174 2022 5 19 59718 0.1082 0.4777 -0.13113 2022 5 20 59719 0.1103 0.4781 -0.13047 2022 5 21 59720 0.1124 0.4785 -0.12991 2022 5 22 59721 0.1145 0.4789 -0.12940 2022 5 23 59722 0.1166 0.4792 -0.12900 2022 5 24 59723 0.1187 0.4795 -0.12879 2022 5 25 59724 0.1208 0.4798 -0.12867 2022 5 26 59725 0.1229 0.4801 -0.12856 2022 5 27 59726 0.1251 0.4803 -0.12838 2022 5 28 59727 0.1272 0.4805 -0.12796 2022 5 29 59728 0.1293 0.4806 -0.12735 2022 5 30 59729 0.1315 0.4807 -0.12650 2022 5 31 59730 0.1336 0.4808 -0.12544 2022 6 1 59731 0.1358 0.4809 -0.12425 2022 6 2 59732 0.1379 0.4809 -0.12296 2022 6 3 59733 0.1400 0.4809 -0.12163 2022 6 4 59734 0.1422 0.4809 -0.12048 2022 6 5 59735 0.1443 0.4808 -0.11945 2022 6 6 59736 0.1465 0.4807 -0.11858 2022 6 7 59737 0.1486 0.4806 -0.11789 2022 6 8 59738 0.1507 0.4804 -0.11733 2022 6 9 59739 0.1528 0.4802 -0.11690 2022 6 10 59740 0.1550 0.4800 -0.11660 2022 6 11 59741 0.1571 0.4798 -0.11633 2022 6 12 59742 0.1592 0.4795 -0.11589 2022 6 13 59743 0.1613 0.4791 -0.11521 2022 6 14 59744 0.1634 0.4788 -0.11426 2022 6 15 59745 0.1655 0.4784 -0.11310 2022 6 16 59746 0.1676 0.4780 -0.11187 2022 6 17 59747 0.1696 0.4776 -0.11069 2022 6 18 59748 0.1717 0.4771 -0.10969 2022 6 19 59749 0.1738 0.4766 -0.10892 2022 6 20 59750 0.1758 0.4760 -0.10838 2022 6 21 59751 0.1778 0.4755 -0.10792 2022 6 22 59752 0.1799 0.4749 -0.10744 2022 6 23 59753 0.1819 0.4743 -0.10688 2022 6 24 59754 0.1839 0.4736 -0.10620 2022 6 25 59755 0.1859 0.4729 -0.10535 2022 6 26 59756 0.1878 0.4722 -0.10432 2022 6 27 59757 0.1898 0.4715 -0.10315 2022 6 28 59758 0.1917 0.4707 -0.10179 2022 6 29 59759 0.1937 0.4699 -0.10027 2022 6 30 59760 0.1956 0.4691 -0.09869 2022 7 1 59761 0.1975 0.4682 -0.09710 2022 7 2 59762 0.1994 0.4673 -0.09562 2022 7 3 59763 0.2012 0.4664 -0.09423 2022 7 4 59764 0.2031 0.4654 -0.09307 2022 7 5 59765 0.2049 0.4645 -0.09211 2022 7 6 59766 0.2067 0.4635 -0.09133 2022 7 7 59767 0.2085 0.4625 -0.09065 2022 7 8 59768 0.2103 0.4614 -0.09002 2022 7 9 59769 0.2120 0.4603 -0.08941 2022 7 10 59770 0.2137 0.4592 -0.08863 2022 7 11 59771 0.2154 0.4581 -0.08767 2022 7 12 59772 0.2171 0.4569 -0.08652 2022 7 13 59773 0.2188 0.4558 -0.08526 2022 7 14 59774 0.2204 0.4545 -0.08401 2022 7 15 59775 0.2221 0.4533 -0.08284 2022 7 16 59776 0.2236 0.4521 -0.08187 2022 7 17 59777 0.2252 0.4508 -0.08113 2022 7 18 59778 0.2268 0.4495 -0.08056 2022 7 19 59779 0.2283 0.4482 -0.08004 2022 7 20 59780 0.2298 0.4468 -0.07942 2022 7 21 59781 0.2313 0.4454 -0.07863 2022 7 22 59782 0.2327 0.4441 -0.07767 2022 7 23 59783 0.2341 0.4426 -0.07645 2022 7 24 59784 0.2355 0.4412 -0.07517 2022 7 25 59785 0.2369 0.4398 -0.07370 2022 7 26 59786 0.2382 0.4383 -0.07212 2022 7 27 59787 0.2395 0.4368 -0.07045 2022 7 28 59788 0.2408 0.4353 -0.06874 2022 7 29 59789 0.2421 0.4337 -0.06710 2022 7 30 59790 0.2433 0.4322 -0.06564 2022 7 31 59791 0.2445 0.4306 -0.06440 2022 8 1 59792 0.2457 0.4290 -0.06342 2022 8 2 59793 0.2468 0.4274 -0.06261 2022 8 3 59794 0.2479 0.4258 -0.06192 2022 8 4 59795 0.2490 0.4242 -0.06130 2022 8 5 59796 0.2500 0.4225 -0.06064 2022 8 6 59797 0.2510 0.4208 -0.05987 2022 8 7 59798 0.2520 0.4191 -0.05892 2022 8 8 59799 0.2530 0.4174 -0.05780 2022 8 9 59800 0.2539 0.4157 -0.05659 2022 8 10 59801 0.2548 0.4140 -0.05529 2022 8 11 59802 0.2556 0.4123 -0.05404 2022 8 12 59803 0.2564 0.4105 -0.05302 2022 8 13 59804 0.2572 0.4087 -0.05232 2022 8 14 59805 0.2580 0.4070 -0.05191 2022 8 15 59806 0.2587 0.4052 -0.05165 2022 8 16 59807 0.2594 0.4034 -0.05137 2022 8 17 59808 0.2601 0.4016 -0.05097 2022 8 18 59809 0.2607 0.3997 -0.05036 2022 8 19 59810 0.2613 0.3979 -0.04949 2022 8 20 59811 0.2618 0.3961 -0.04841 2022 8 21 59812 0.2623 0.3942 -0.04722 2022 8 22 59813 0.2628 0.3924 -0.04598 2022 8 23 59814 0.2633 0.3905 -0.04471 2022 8 24 59815 0.2637 0.3886 -0.04351 2022 8 25 59816 0.2641 0.3868 -0.04247 2022 8 26 59817 0.2644 0.3849 -0.04164 2022 8 27 59818 0.2647 0.3830 -0.04100 2022 8 28 59819 0.2650 0.3811 -0.04049 2022 8 29 59820 0.2653 0.3792 -0.04010 2022 8 30 59821 0.2655 0.3773 -0.03981 2022 8 31 59822 0.2656 0.3754 -0.03957 2022 9 1 59823 0.2658 0.3735 -0.03931 2022 9 2 59824 0.2659 0.3716 -0.03884 2022 9 3 59825 0.2659 0.3697 -0.03815 2022 9 4 59826 0.2660 0.3678 -0.03721 2022 9 5 59827 0.2660 0.3659 -0.03613 2022 9 6 59828 0.2659 0.3640 -0.03497 2022 9 7 59829 0.2658 0.3621 -0.03385 2022 9 8 59830 0.2657 0.3602 -0.03297 2022 9 9 59831 0.2656 0.3583 -0.03234 2022 9 10 59832 0.2654 0.3564 -0.03193 2022 9 11 59833 0.2652 0.3545 -0.03179 2022 9 12 59834 0.2649 0.3526 -0.03174 2022 9 13 59835 0.2647 0.3507 -0.03165 2022 9 14 59836 0.2643 0.3488 -0.03139 2022 9 15 59837 0.2640 0.3469 -0.03088 2022 9 16 59838 0.2636 0.3450 -0.03009 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) 59451 -117.48 1.11 -9.25 0.11 59452 -117.78 1.11 -9.10 0.11 59453 -118.15 1.11 -9.05 0.11 59454 -118.43 0.32 -9.09 0.16 59455 -118.53 0.60 -9.11 0.13 59456 -118.55 0.60 -9.06 0.13 59457 -118.60 0.60 -9.00 0.13 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59451 0.406 0.443 -0.083 0.114 59452 0.399 0.443 -0.064 0.114 59453 0.384 0.443 -0.042 0.114 59454 0.363 0.128 -0.018 0.160 59455 0.337 0.241 0.008 0.129 59456 0.307 0.241 0.034 0.129 59457 0.276 0.241 0.061 0.129 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).