********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 4 November 2021 Vol. XXXIV No. 044 ______________________________________________________________________ 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 29 59516 0.17297 .00009 0.25377 .00009 -0.103768 0.000020 21 10 30 59517 0.17109 .00009 0.25343 .00009 -0.103559 0.000018 21 10 31 59518 0.16915 .00009 0.25304 .00009 -0.103635 0.000021 21 11 1 59519 0.16721 .00009 0.25257 .00009 -0.104058 0.000029 21 11 2 59520 0.16556 .00009 0.25197 .00009 -0.104709 0.000034 21 11 3 59521 0.16435 .00009 0.25121 .00009 -0.105521 0.000036 21 11 4 59522 0.16333 .00009 0.25044 .00009 -0.106354 0.000043 IERS Final Values MJD x y UT1-UTC " " s 21 9 2 59459 0.2439 0.3260 -0.11826 21 9 3 59460 0.2438 0.3241 -0.11723 21 9 4 59461 0.2439 0.3228 -0.11627 21 9 5 59462 0.2433 0.3212 -0.11546 21 9 6 59463 0.2423 0.3193 -0.11492 21 9 7 59464 0.2411 0.3173 -0.11459 21 9 8 59465 0.2402 0.3154 -0.11444 21 9 9 59466 0.2395 0.3137 -0.11445 21 9 10 59467 0.2391 0.3119 -0.11450 21 9 11 59468 0.2389 0.3104 -0.11451 21 9 12 59469 0.2391 0.3092 -0.11434 21 9 13 59470 0.2391 0.3082 -0.11392 21 9 14 59471 0.2381 0.3068 -0.11325 21 9 15 59472 0.2369 0.3054 -0.11243 21 9 16 59473 0.2352 0.3042 -0.11156 21 9 17 59474 0.2341 0.3025 -0.11078 21 9 18 59475 0.2333 0.3007 -0.11018 21 9 19 59476 0.2319 0.2990 -0.10979 21 9 20 59477 0.2309 0.2971 -0.10954 21 9 21 59478 0.2304 0.2952 -0.10938 21 9 22 59479 0.2303 0.2934 -0.10929 21 9 23 59480 0.2297 0.2919 -0.10921 21 9 24 59481 0.2291 0.2907 -0.10907 21 9 25 59482 0.2282 0.2897 -0.10885 21 9 26 59483 0.2268 0.2886 -0.10852 21 9 27 59484 0.2250 0.2869 -0.10803 21 9 28 59485 0.2232 0.2851 -0.10740 21 9 29 59486 0.2216 0.2833 -0.10670 21 9 30 59487 0.2206 0.2813 -0.10597 21 10 1 59488 0.2199 0.2798 -0.10526 _______________________________________________________________________ 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 = 0.1430 + 0.0628 cos A - 0.0961 sin A - 0.0414 cos C - 0.0251 sin C y = 0.3583 - 0.0821 cos A - 0.0644 sin A - 0.0251 cos C + 0.0414 sin C UT1-UTC = -0.1240 + 0.00022 (MJD - 59530) - (UT2-UT1) where A = 2*pi*(MJD-59522)/365.25 and C = 2*pi*(MJD-59522)/435. TAI-UTC(MJD 59523) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59522)**0.80 S t = 0.00025 (MJD-59522)**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 11 5 59523 0.1621 0.2498 -0.10701 2021 11 6 59524 0.1608 0.2493 -0.10738 2021 11 7 59525 0.1594 0.2490 -0.10749 2021 11 8 59526 0.1577 0.2486 -0.10739 2021 11 9 59527 0.1559 0.2483 -0.10717 2021 11 10 59528 0.1540 0.2480 -0.10698 2021 11 11 59529 0.1521 0.2477 -0.10691 2021 11 12 59530 0.1502 0.2473 -0.10699 2021 11 13 59531 0.1483 0.2470 -0.10724 2021 11 14 59532 0.1464 0.2468 -0.10759 2021 11 15 59533 0.1445 0.2466 -0.10797 2021 11 16 59534 0.1427 0.2463 -0.10834 2021 11 17 59535 0.1409 0.2461 -0.10865 2021 11 18 59536 0.1390 0.2459 -0.10887 2021 11 19 59537 0.1371 0.2458 -0.10891 2021 11 20 59538 0.1352 0.2458 -0.10877 2021 11 21 59539 0.1333 0.2458 -0.10844 2021 11 22 59540 0.1313 0.2458 -0.10797 2021 11 23 59541 0.1293 0.2459 -0.10742 2021 11 24 59542 0.1273 0.2460 -0.10686 2021 11 25 59543 0.1253 0.2461 -0.10636 2021 11 26 59544 0.1233 0.2463 -0.10597 2021 11 27 59545 0.1213 0.2464 -0.10578 2021 11 28 59546 0.1193 0.2466 -0.10581 2021 11 29 59547 0.1174 0.2468 -0.10608 2021 11 30 59548 0.1154 0.2471 -0.10653 2021 12 1 59549 0.1135 0.2474 -0.10707 2021 12 2 59550 0.1115 0.2477 -0.10756 2021 12 3 59551 0.1096 0.2481 -0.10785 2021 12 4 59552 0.1077 0.2485 -0.10789 2021 12 5 59553 0.1057 0.2489 -0.10766 2021 12 6 59554 0.1038 0.2493 -0.10725 2021 12 7 59555 0.1019 0.2498 -0.10678 2021 12 8 59556 0.1000 0.2503 -0.10637 2021 12 9 59557 0.0980 0.2508 -0.10610 2021 12 10 59558 0.0961 0.2514 -0.10599 2021 12 11 59559 0.0943 0.2520 -0.10602 2021 12 12 59560 0.0924 0.2526 -0.10612 2021 12 13 59561 0.0905 0.2532 -0.10622 2021 12 14 59562 0.0887 0.2538 -0.10626 2021 12 15 59563 0.0868 0.2545 -0.10618 2021 12 16 59564 0.0850 0.2552 -0.10595 2021 12 17 59565 0.0832 0.2560 -0.10556 2021 12 18 59566 0.0814 0.2568 -0.10500 2021 12 19 59567 0.0796 0.2576 -0.10431 2021 12 20 59568 0.0778 0.2584 -0.10353 2021 12 21 59569 0.0760 0.2593 -0.10272 2021 12 22 59570 0.0743 0.2602 -0.10196 2021 12 23 59571 0.0725 0.2611 -0.10131 2021 12 24 59572 0.0708 0.2620 -0.10083 2021 12 25 59573 0.0691 0.2630 -0.10056 2021 12 26 59574 0.0674 0.2640 -0.10050 2021 12 27 59575 0.0657 0.2650 -0.10063 2021 12 28 59576 0.0640 0.2660 -0.10088 2021 12 29 59577 0.0624 0.2671 -0.10116 2021 12 30 59578 0.0608 0.2682 -0.10134 2021 12 31 59579 0.0591 0.2693 -0.10133 2022 1 1 59580 0.0575 0.2704 -0.10110 2022 1 2 59581 0.0560 0.2716 -0.10068 2022 1 3 59582 0.0544 0.2728 -0.10018 2022 1 4 59583 0.0529 0.2740 -0.09973 2022 1 5 59584 0.0514 0.2753 -0.09944 2022 1 6 59585 0.0499 0.2765 -0.09935 2022 1 7 59586 0.0484 0.2778 -0.09945 2022 1 8 59587 0.0470 0.2791 -0.09968 2022 1 9 59588 0.0455 0.2805 -0.09994 2022 1 10 59589 0.0441 0.2818 -0.10016 2022 1 11 59590 0.0427 0.2832 -0.10027 2022 1 12 59591 0.0414 0.2846 -0.10023 2022 1 13 59592 0.0401 0.2860 -0.10003 2022 1 14 59593 0.0388 0.2875 -0.09965 2022 1 15 59594 0.0375 0.2889 -0.09914 2022 1 16 59595 0.0362 0.2904 -0.09853 2022 1 17 59596 0.0350 0.2919 -0.09788 2022 1 18 59597 0.0338 0.2934 -0.09726 2022 1 19 59598 0.0326 0.2950 -0.09676 2022 1 20 59599 0.0314 0.2965 -0.09641 2022 1 21 59600 0.0303 0.2981 -0.09627 2022 1 22 59601 0.0292 0.2997 -0.09634 2022 1 23 59602 0.0281 0.3013 -0.09659 2022 1 24 59603 0.0271 0.3030 -0.09697 2022 1 25 59604 0.0261 0.3046 -0.09738 2022 1 26 59605 0.0251 0.3063 -0.09773 2022 1 27 59606 0.0241 0.3079 -0.09792 2022 1 28 59607 0.0232 0.3096 -0.09790 2022 1 29 59608 0.0223 0.3113 -0.09769 2022 1 30 59609 0.0214 0.3130 -0.09736 2022 1 31 59610 0.0206 0.3148 -0.09704 2022 2 1 59611 0.0198 0.3165 -0.09686 2022 2 2 59612 0.0190 0.3183 -0.09689 2022 2 3 59613 0.0183 0.3201 -0.09714 2022 2 4 59614 0.0175 0.3218 -0.09757 2022 2 5 59615 0.0169 0.3236 -0.09807 2022 2 6 59616 0.0162 0.3254 -0.09857 2022 2 7 59617 0.0156 0.3273 -0.09896 2022 2 8 59618 0.0150 0.3291 -0.09922 2022 2 9 59619 0.0144 0.3309 -0.09930 2022 2 10 59620 0.0139 0.3328 -0.09922 2022 2 11 59621 0.0134 0.3346 -0.09899 2022 2 12 59622 0.0130 0.3365 -0.09865 2022 2 13 59623 0.0125 0.3383 -0.09828 2022 2 14 59624 0.0121 0.3402 -0.09792 2022 2 15 59625 0.0118 0.3421 -0.09766 2022 2 16 59626 0.0114 0.3440 -0.09756 2022 2 17 59627 0.0112 0.3459 -0.09768 2022 2 18 59628 0.0109 0.3478 -0.09802 2022 2 19 59629 0.0107 0.3497 -0.09856 2022 2 20 59630 0.0105 0.3516 -0.09925 2022 2 21 59631 0.0103 0.3535 -0.09990 2022 2 22 59632 0.0102 0.3554 -0.10048 2022 2 23 59633 0.0101 0.3573 -0.10092 2022 2 24 59634 0.0100 0.3593 -0.10114 2022 2 25 59635 0.0100 0.3612 -0.10116 2022 2 26 59636 0.0100 0.3631 -0.10105 2022 2 27 59637 0.0100 0.3650 -0.10090 2022 2 28 59638 0.0101 0.3669 -0.10085 2022 3 1 59639 0.0102 0.3689 -0.10098 2022 3 2 59640 0.0104 0.3708 -0.10136 2022 3 3 59641 0.0106 0.3727 -0.10194 2022 3 4 59642 0.0108 0.3746 -0.10266 2022 3 5 59643 0.0110 0.3765 -0.10341 2022 3 6 59644 0.0113 0.3784 -0.10410 2022 3 7 59645 0.0116 0.3803 -0.10464 2022 3 8 59646 0.0120 0.3822 -0.10500 2022 3 9 59647 0.0123 0.3841 -0.10518 2022 3 10 59648 0.0128 0.3860 -0.10518 2022 3 11 59649 0.0132 0.3879 -0.10506 2022 3 12 59650 0.0137 0.3898 -0.10486 2022 3 13 59651 0.0142 0.3917 -0.10466 2022 3 14 59652 0.0148 0.3935 -0.10454 2022 3 15 59653 0.0153 0.3954 -0.10456 2022 3 16 59654 0.0160 0.3972 -0.10479 2022 3 17 59655 0.0166 0.3991 -0.10525 2022 3 18 59656 0.0173 0.4009 -0.10594 2022 3 19 59657 0.0180 0.4027 -0.10681 2022 3 20 59658 0.0187 0.4045 -0.10775 2022 3 21 59659 0.0195 0.4063 -0.10863 2022 3 22 59660 0.0203 0.4081 -0.10936 2022 3 23 59661 0.0212 0.4099 -0.10985 2022 3 24 59662 0.0220 0.4116 -0.11011 2022 3 25 59663 0.0230 0.4134 -0.11019 2022 3 26 59664 0.0239 0.4151 -0.11020 2022 3 27 59665 0.0249 0.4168 -0.11025 2022 3 28 59666 0.0259 0.4186 -0.11045 2022 3 29 59667 0.0269 0.4203 -0.11086 2022 3 30 59668 0.0279 0.4219 -0.11148 2022 3 31 59669 0.0290 0.4236 -0.11226 2022 4 1 59670 0.0301 0.4252 -0.11311 2022 4 2 59671 0.0313 0.4269 -0.11393 2022 4 3 59672 0.0325 0.4285 -0.11464 2022 4 4 59673 0.0337 0.4301 -0.11517 2022 4 5 59674 0.0349 0.4317 -0.11549 2022 4 6 59675 0.0362 0.4332 -0.11561 2022 4 7 59676 0.0375 0.4348 -0.11558 2022 4 8 59677 0.0388 0.4363 -0.11543 2022 4 9 59678 0.0401 0.4378 -0.11524 2022 4 10 59679 0.0415 0.4393 -0.11509 2022 4 11 59680 0.0429 0.4407 -0.11504 2022 4 12 59681 0.0443 0.4422 -0.11517 2022 4 13 59682 0.0458 0.4436 -0.11551 2022 4 14 59683 0.0472 0.4450 -0.11609 2022 4 15 59684 0.0487 0.4463 -0.11688 2022 4 16 59685 0.0503 0.4477 -0.11778 2022 4 17 59686 0.0518 0.4490 -0.11868 2022 4 18 59687 0.0534 0.4503 -0.11944 2022 4 19 59688 0.0550 0.4516 -0.11997 2022 4 20 59689 0.0566 0.4529 -0.12024 2022 4 21 59690 0.0582 0.4541 -0.12027 2022 4 22 59691 0.0599 0.4553 -0.12018 2022 4 23 59692 0.0616 0.4565 -0.12009 2022 4 24 59693 0.0633 0.4577 -0.12010 2022 4 25 59694 0.0650 0.4588 -0.12029 2022 4 26 59695 0.0667 0.4599 -0.12068 2022 4 27 59696 0.0685 0.4610 -0.12123 2022 4 28 59697 0.0703 0.4621 -0.12187 2022 4 29 59698 0.0721 0.4631 -0.12250 2022 4 30 59699 0.0739 0.4641 -0.12306 2022 5 1 59700 0.0758 0.4651 -0.12346 2022 5 2 59701 0.0776 0.4660 -0.12367 2022 5 3 59702 0.0795 0.4669 -0.12369 2022 5 4 59703 0.0814 0.4678 -0.12355 2022 5 5 59704 0.0833 0.4687 -0.12329 2022 5 6 59705 0.0852 0.4695 -0.12298 2022 5 7 59706 0.0871 0.4703 -0.12271 2022 5 8 59707 0.0891 0.4711 -0.12254 2022 5 9 59708 0.0911 0.4719 -0.12256 2022 5 10 59709 0.0930 0.4726 -0.12280 2022 5 11 59710 0.0950 0.4733 -0.12330 2022 5 12 59711 0.0970 0.4739 -0.12404 2022 5 13 59712 0.0990 0.4745 -0.12496 2022 5 14 59713 0.1011 0.4751 -0.12594 2022 5 15 59714 0.1031 0.4757 -0.12683 2022 5 16 59715 0.1051 0.4762 -0.12750 2022 5 17 59716 0.1072 0.4768 -0.12788 2022 5 18 59717 0.1093 0.4772 -0.12796 2022 5 19 59718 0.1113 0.4777 -0.12784 2022 5 20 59719 0.1134 0.4781 -0.12763 2022 5 21 59720 0.1155 0.4785 -0.12746 2022 5 22 59721 0.1176 0.4788 -0.12740 2022 5 23 59722 0.1197 0.4791 -0.12747 2022 5 24 59723 0.1218 0.4794 -0.12764 2022 5 25 59724 0.1239 0.4797 -0.12784 2022 5 26 59725 0.1260 0.4799 -0.12798 2022 5 27 59726 0.1281 0.4801 -0.12799 2022 5 28 59727 0.1302 0.4803 -0.12781 2022 5 29 59728 0.1324 0.4804 -0.12743 2022 5 30 59729 0.1345 0.4805 -0.12683 2022 5 31 59730 0.1366 0.4806 -0.12606 2022 6 1 59731 0.1387 0.4806 -0.12513 2022 6 2 59732 0.1409 0.4806 -0.12413 2022 6 3 59733 0.1430 0.4806 -0.12310 2022 6 4 59734 0.1451 0.4805 -0.12212 2022 6 5 59735 0.1472 0.4804 -0.12127 2022 6 6 59736 0.1494 0.4803 -0.12059 2022 6 7 59737 0.1515 0.4801 -0.12012 2022 6 8 59738 0.1536 0.4799 -0.11985 2022 6 9 59739 0.1557 0.4797 -0.11974 2022 6 10 59740 0.1578 0.4794 -0.11970 2022 6 11 59741 0.1599 0.4792 -0.11961 2022 6 12 59742 0.1620 0.4788 -0.11935 2022 6 13 59743 0.1641 0.4785 -0.11882 2022 6 14 59744 0.1662 0.4781 -0.11798 2022 6 15 59745 0.1683 0.4777 -0.11695 2022 6 16 59746 0.1703 0.4773 -0.11581 2022 6 17 59747 0.1724 0.4768 -0.11471 2022 6 18 59748 0.1745 0.4763 -0.11380 2022 6 19 59749 0.1765 0.4757 -0.11307 2022 6 20 59750 0.1785 0.4752 -0.11258 2022 6 21 59751 0.1805 0.4746 -0.11215 2022 6 22 59752 0.1826 0.4740 -0.11162 2022 6 23 59753 0.1846 0.4733 -0.11098 2022 6 24 59754 0.1865 0.4726 -0.11018 2022 6 25 59755 0.1885 0.4719 -0.10914 2022 6 26 59756 0.1905 0.4712 -0.10785 2022 6 27 59757 0.1924 0.4704 -0.10631 2022 6 28 59758 0.1944 0.4696 -0.10461 2022 6 29 59759 0.1963 0.4687 -0.10281 2022 6 30 59760 0.1982 0.4679 -0.10093 2022 7 1 59761 0.2001 0.4670 -0.09912 2022 7 2 59762 0.2019 0.4661 -0.09742 2022 7 3 59763 0.2038 0.4651 -0.09590 2022 7 4 59764 0.2056 0.4641 -0.09458 2022 7 5 59765 0.2074 0.4631 -0.09346 2022 7 6 59766 0.2092 0.4621 -0.09249 2022 7 7 59767 0.2110 0.4610 -0.09157 2022 7 8 59768 0.2128 0.4600 -0.09064 2022 7 9 59769 0.2145 0.4589 -0.08967 2022 7 10 59770 0.2162 0.4577 -0.08849 2022 7 11 59771 0.2179 0.4566 -0.08711 2022 7 12 59772 0.2196 0.4554 -0.08558 2022 7 13 59773 0.2213 0.4542 -0.08395 2022 7 14 59774 0.2229 0.4529 -0.08236 2022 7 15 59775 0.2245 0.4517 -0.08090 2022 7 16 59776 0.2261 0.4504 -0.07965 2022 7 17 59777 0.2277 0.4491 -0.07865 2022 7 18 59778 0.2292 0.4477 -0.07782 2022 7 19 59779 0.2307 0.4464 -0.07705 2022 7 20 59780 0.2322 0.4450 -0.07626 2022 7 21 59781 0.2337 0.4436 -0.07533 2022 7 22 59782 0.2351 0.4422 -0.07419 2022 7 23 59783 0.2365 0.4407 -0.07290 2022 7 24 59784 0.2379 0.4393 -0.07143 2022 7 25 59785 0.2393 0.4378 -0.06969 2022 7 26 59786 0.2406 0.4363 -0.06782 2022 7 27 59787 0.2419 0.4348 -0.06590 2022 7 28 59788 0.2432 0.4332 -0.06398 2022 7 29 59789 0.2445 0.4317 -0.06216 2022 7 30 59790 0.2457 0.4301 -0.06050 2022 7 31 59791 0.2469 0.4285 -0.05903 2022 8 1 59792 0.2480 0.4269 -0.05772 2022 8 2 59793 0.2492 0.4252 -0.05665 2022 8 3 59794 0.2503 0.4236 -0.05575 2022 8 4 59795 0.2513 0.4219 -0.05497 2022 8 5 59796 0.2524 0.4202 -0.05427 2022 8 6 59797 0.2534 0.4185 -0.05347 2022 8 7 59798 0.2544 0.4168 -0.05259 2022 8 8 59799 0.2553 0.4151 -0.05158 2022 8 9 59800 0.2563 0.4134 -0.05046 2022 8 10 59801 0.2571 0.4116 -0.04938 2022 8 11 59802 0.2580 0.4098 -0.04842 2022 8 12 59803 0.2588 0.4081 -0.04767 2022 8 13 59804 0.2596 0.4063 -0.04719 2022 8 14 59805 0.2604 0.4045 -0.04694 2022 8 15 59806 0.2611 0.4026 -0.04684 2022 8 16 59807 0.2618 0.4008 -0.04669 2022 8 17 59808 0.2624 0.3990 -0.04641 2022 8 18 59809 0.2631 0.3971 -0.04592 2022 8 19 59810 0.2637 0.3953 -0.04521 2022 8 20 59811 0.2642 0.3934 -0.04431 2022 8 21 59812 0.2647 0.3916 -0.04326 2022 8 22 59813 0.2652 0.3897 -0.04207 2022 8 23 59814 0.2657 0.3878 -0.04080 2022 8 24 59815 0.2661 0.3859 -0.03950 2022 8 25 59816 0.2665 0.3840 -0.03820 2022 8 26 59817 0.2669 0.3821 -0.03708 2022 8 27 59818 0.2672 0.3802 -0.03619 2022 8 28 59819 0.2675 0.3783 -0.03542 2022 8 29 59820 0.2677 0.3764 -0.03477 2022 8 30 59821 0.2679 0.3745 -0.03431 2022 8 31 59822 0.2681 0.3726 -0.03394 2022 9 1 59823 0.2682 0.3706 -0.03354 2022 9 2 59824 0.2684 0.3687 -0.03305 2022 9 3 59825 0.2684 0.3668 -0.03229 2022 9 4 59826 0.2685 0.3649 -0.03135 2022 9 5 59827 0.2685 0.3630 -0.03024 2022 9 6 59828 0.2684 0.3610 -0.02905 2022 9 7 59829 0.2684 0.3591 -0.02799 2022 9 8 59830 0.2683 0.3572 -0.02712 2022 9 9 59831 0.2682 0.3553 -0.02651 2022 9 10 59832 0.2680 0.3534 -0.02632 2022 9 11 59833 0.2678 0.3515 -0.02633 2022 9 12 59834 0.2675 0.3496 -0.02644 2022 9 13 59835 0.2673 0.3477 -0.02648 2022 9 14 59836 0.2670 0.3458 -0.02630 2022 9 15 59837 0.2666 0.3439 -0.02588 2022 9 16 59838 0.2663 0.3420 -0.02527 2022 9 17 59839 0.2658 0.3401 -0.02450 2022 9 18 59840 0.2654 0.3382 -0.02358 2022 9 19 59841 0.2649 0.3364 -0.02257 2022 9 20 59842 0.2644 0.3345 -0.02156 2022 9 21 59843 0.2639 0.3327 -0.02064 2022 9 22 59844 0.2633 0.3308 -0.01990 2022 9 23 59845 0.2627 0.3290 -0.01937 2022 9 24 59846 0.2620 0.3272 -0.01907 2022 9 25 59847 0.2614 0.3254 -0.01904 2022 9 26 59848 0.2606 0.3236 -0.01923 2022 9 27 59849 0.2599 0.3218 -0.01950 2022 9 28 59850 0.2591 0.3200 -0.01973 2022 9 29 59851 0.2583 0.3182 -0.01986 2022 9 30 59852 0.2575 0.3165 -0.01982 2022 10 1 59853 0.2566 0.3148 -0.01960 2022 10 2 59854 0.2557 0.3130 -0.01921 2022 10 3 59855 0.2548 0.3113 -0.01880 2022 10 4 59856 0.2538 0.3096 -0.01838 2022 10 5 59857 0.2528 0.3080 -0.01807 2022 10 6 59858 0.2518 0.3063 -0.01796 2022 10 7 59859 0.2508 0.3047 -0.01809 2022 10 8 59860 0.2497 0.3030 -0.01848 2022 10 9 59861 0.2486 0.3014 -0.01889 2022 10 10 59862 0.2474 0.2998 -0.01936 2022 10 11 59863 0.2463 0.2983 -0.01975 2022 10 12 59864 0.2451 0.2967 -0.01995 2022 10 13 59865 0.2438 0.2952 -0.01991 2022 10 14 59866 0.2426 0.2937 -0.01966 2022 10 15 59867 0.2413 0.2922 -0.01934 2022 10 16 59868 0.2400 0.2907 -0.01890 2022 10 17 59869 0.2387 0.2892 -0.01849 2022 10 18 59870 0.2373 0.2878 -0.01814 2022 10 19 59871 0.2359 0.2864 -0.01792 2022 10 20 59872 0.2345 0.2850 -0.01788 2022 10 21 59873 0.2331 0.2836 -0.01798 2022 10 22 59874 0.2316 0.2823 -0.01827 2022 10 23 59875 0.2301 0.2809 -0.01875 2022 10 24 59876 0.2286 0.2796 -0.01938 2022 10 25 59877 0.2271 0.2784 -0.02004 2022 10 26 59878 0.2256 0.2771 -0.02057 2022 10 27 59879 0.2240 0.2759 -0.02087 2022 10 28 59880 0.2224 0.2747 -0.02097 2022 10 29 59881 0.2208 0.2735 -0.02078 2022 10 30 59882 0.2191 0.2724 -0.02057 2022 10 31 59883 0.2175 0.2712 -0.02032 2022 11 1 59884 0.2158 0.2701 -0.02016 2022 11 2 59885 0.2141 0.2691 -0.02015 2022 11 3 59886 0.2124 0.2680 -0.02031 2022 11 4 59887 0.2107 0.2670 -0.02064 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) 59496 -117.05 0.20 -8.71 0.13 59497 -117.03 0.20 -8.68 0.13 59498 -116.94 0.32 -8.46 0.12 59499 -116.83 0.72 -8.24 0.01 59500 -116.69 0.72 -8.17 0.04 59501 -116.49 0.72 -8.21 0.04 59502 -116.19 0.72 -8.27 0.04 59503 -115.84 0.72 -8.31 0.04 59504 -115.56 0.71 -8.29 0.07 59505 -115.43 0.71 -8.17 0.07 59506 -115.40 0.32 -7.93 0.16 59507 -115.38 0.70 -7.66 0.20 59508 -115.33 0.70 -7.55 0.20 59509 -115.27 0.70 -7.67 0.20 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 59459 -118.6 -9.4 59460 -118.4 -9.7 59461 -118.1 -9.8 59462 -118.0 -9.7 59463 -118.0 -9.4 59464 -118.1 -9.2 59465 -118.2 -9.1 59466 -118.2 -9.3 59467 -118.2 -9.5 59468 -118.4 -9.6 59469 -118.6 -9.5 59470 -118.7 -9.4 59471 -118.7 -9.2 59472 -118.6 -9.2 59473 -118.3 -9.2 59474 -118.0 -9.2 59475 -117.8 -9.2 59476 -117.7 -9.1 59477 -117.7 -9.0 59478 -117.7 -8.7 59479 -117.8 -8.5 59480 -117.9 -8.5 59481 -118.1 -8.6 59482 -118.1 -8.7 59483 -118.0 -8.8 59484 -117.8 -8.8 59485 -117.6 -8.8 59486 -117.5 -8.9 59487 -117.3 -9.0 59488 -116.9 -9.1 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59496 0.125 0.080 -0.111 0.133 59497 0.119 0.080 -0.090 0.133 59498 0.133 0.127 -0.072 0.119 59499 0.160 0.286 -0.057 0.007 59500 0.192 0.285 -0.048 0.044 59501 0.222 0.285 -0.046 0.044 59502 0.246 0.285 -0.051 0.044 59503 0.265 0.285 -0.060 0.044 59504 0.278 0.283 -0.074 0.067 59505 0.286 0.283 -0.091 0.067 59506 0.291 0.128 -0.111 0.160 59507 0.293 0.277 -0.133 0.200 59508 0.292 0.277 -0.157 0.200 59509 0.291 0.277 -0.182 0.200 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 59459 0.26 -0.01 59460 0.27 -0.08 59461 0.23 -0.09 59462 0.19 -0.08 59463 0.14 -0.08 59464 0.10 -0.07 59465 0.05 -0.07 59466 0.11 -0.08 59467 0.19 -0.10 59468 0.22 -0.11 59469 0.23 -0.11 59470 0.23 -0.11 59471 0.24 -0.11 59472 0.26 -0.13 59473 0.28 -0.17 59474 0.30 -0.20 59475 0.29 -0.18 59476 0.27 -0.13 59477 0.25 -0.09 59478 0.23 -0.04 59479 0.21 -0.05 59480 0.20 -0.07 59481 0.18 -0.10 59482 0.20 -0.10 59483 0.21 -0.10 59484 0.23 -0.09 59485 0.25 -0.09 59486 0.26 -0.10 59487 0.27 -0.11 59488 0.28 -0.12 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).