********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 21 October 2021 Vol. XXXIV No. 042 ______________________________________________________________________ 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 15 59502 0.19711 .00009 0.26398 .00009 -0.104811 0.000010 21 10 16 59503 0.19468 .00009 0.26336 .00009 -0.104710 0.000009 21 10 17 59504 0.19248 .00009 0.26274 .00009 -0.104777 0.000009 21 10 18 59505 0.19040 .00009 0.26203 .00009 -0.104986 0.000013 21 10 19 59506 0.18852 .00009 0.26116 .00009 -0.105299 0.000015 21 10 20 59507 0.18705 .00009 0.26038 .00009 -0.105653 0.000017 21 10 21 59508 0.18585 .00009 0.25970 .00009 -0.105947 0.000019 _______________________________________________________________________ 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 = 0.1376 + 0.0860 cos A - 0.0815 sin A - 0.0396 cos C - 0.0317 sin C y = 0.3595 - 0.0673 cos A - 0.0853 sin A - 0.0317 cos C + 0.0396 sin C UT1-UTC = -0.1285 + 0.00022 (MJD - 59516) - (UT2-UT1) where A = 2*pi*(MJD-59508)/365.25 and C = 2*pi*(MJD-59508)/435. TAI-UTC(MJD 59509) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59508)**0.80 S t = 0.00025 (MJD-59508)**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 22 59509 0.1846 0.2591 -0.10612 2021 10 23 59510 0.1833 0.2585 -0.10609 2021 10 24 59511 0.1819 0.2580 -0.10588 2021 10 25 59512 0.1804 0.2575 -0.10550 2021 10 26 59513 0.1788 0.2569 -0.10504 2021 10 27 59514 0.1772 0.2563 -0.10456 2021 10 28 59515 0.1755 0.2558 -0.10410 2021 10 29 59516 0.1738 0.2552 -0.10373 2021 10 30 59517 0.1721 0.2546 -0.10353 2021 10 31 59518 0.1704 0.2540 -0.10357 2021 11 1 59519 0.1686 0.2534 -0.10384 2021 11 2 59520 0.1668 0.2528 -0.10437 2021 11 3 59521 0.1651 0.2522 -0.10507 2021 11 4 59522 0.1634 0.2517 -0.10580 2021 11 5 59523 0.1617 0.2511 -0.10639 2021 11 6 59524 0.1600 0.2507 -0.10674 2021 11 7 59525 0.1582 0.2502 -0.10683 2021 11 8 59526 0.1564 0.2499 -0.10669 2021 11 9 59527 0.1545 0.2495 -0.10641 2021 11 10 59528 0.1526 0.2492 -0.10612 2021 11 11 59529 0.1507 0.2489 -0.10589 2021 11 12 59530 0.1487 0.2486 -0.10581 2021 11 13 59531 0.1468 0.2483 -0.10589 2021 11 14 59532 0.1448 0.2481 -0.10609 2021 11 15 59533 0.1429 0.2479 -0.10637 2021 11 16 59534 0.1410 0.2477 -0.10666 2021 11 17 59535 0.1390 0.2476 -0.10687 2021 11 18 59536 0.1371 0.2475 -0.10695 2021 11 19 59537 0.1352 0.2474 -0.10687 2021 11 20 59538 0.1332 0.2474 -0.10661 2021 11 21 59539 0.1313 0.2474 -0.10618 2021 11 22 59540 0.1293 0.2474 -0.10562 2021 11 23 59541 0.1274 0.2475 -0.10499 2021 11 24 59542 0.1254 0.2476 -0.10436 2021 11 25 59543 0.1234 0.2477 -0.10379 2021 11 26 59544 0.1215 0.2478 -0.10336 2021 11 27 59545 0.1195 0.2480 -0.10313 2021 11 28 59546 0.1176 0.2482 -0.10313 2021 11 29 59547 0.1156 0.2485 -0.10337 2021 11 30 59548 0.1137 0.2487 -0.10379 2021 12 1 59549 0.1117 0.2490 -0.10431 2021 12 2 59550 0.1098 0.2493 -0.10479 2021 12 3 59551 0.1079 0.2497 -0.10509 2021 12 4 59552 0.1060 0.2501 -0.10513 2021 12 5 59553 0.1040 0.2505 -0.10492 2021 12 6 59554 0.1021 0.2509 -0.10453 2021 12 7 59555 0.1002 0.2514 -0.10409 2021 12 8 59556 0.0983 0.2519 -0.10373 2021 12 9 59557 0.0964 0.2524 -0.10352 2021 12 10 59558 0.0945 0.2530 -0.10350 2021 12 11 59559 0.0927 0.2536 -0.10363 2021 12 12 59560 0.0908 0.2542 -0.10386 2021 12 13 59561 0.0889 0.2548 -0.10410 2021 12 14 59562 0.0871 0.2555 -0.10430 2021 12 15 59563 0.0852 0.2562 -0.10439 2021 12 16 59564 0.0834 0.2569 -0.10434 2021 12 17 59565 0.0816 0.2577 -0.10414 2021 12 18 59566 0.0798 0.2584 -0.10378 2021 12 19 59567 0.0780 0.2592 -0.10329 2021 12 20 59568 0.0762 0.2601 -0.10273 2021 12 21 59569 0.0744 0.2609 -0.10214 2021 12 22 59570 0.0727 0.2618 -0.10159 2021 12 23 59571 0.0709 0.2627 -0.10117 2021 12 24 59572 0.0692 0.2637 -0.10091 2021 12 25 59573 0.0675 0.2647 -0.10085 2021 12 26 59574 0.0658 0.2656 -0.10100 2021 12 27 59575 0.0641 0.2667 -0.10133 2021 12 28 59576 0.0624 0.2677 -0.10178 2021 12 29 59577 0.0608 0.2688 -0.10223 2021 12 30 59578 0.0592 0.2699 -0.10257 2021 12 31 59579 0.0576 0.2710 -0.10271 2022 1 1 59580 0.0560 0.2722 -0.10259 2022 1 2 59581 0.0544 0.2733 -0.10228 2022 1 3 59582 0.0529 0.2745 -0.10188 2022 1 4 59583 0.0513 0.2757 -0.10151 2022 1 5 59584 0.0498 0.2770 -0.10130 2022 1 6 59585 0.0483 0.2782 -0.10129 2022 1 7 59586 0.0469 0.2795 -0.10145 2022 1 8 59587 0.0454 0.2808 -0.10173 2022 1 9 59588 0.0440 0.2822 -0.10203 2022 1 10 59589 0.0426 0.2835 -0.10229 2022 1 11 59590 0.0412 0.2849 -0.10244 2022 1 12 59591 0.0399 0.2863 -0.10244 2022 1 13 59592 0.0385 0.2877 -0.10227 2022 1 14 59593 0.0372 0.2892 -0.10194 2022 1 15 59594 0.0360 0.2906 -0.10148 2022 1 16 59595 0.0347 0.2921 -0.10092 2022 1 17 59596 0.0335 0.2936 -0.10034 2022 1 18 59597 0.0323 0.2951 -0.09979 2022 1 19 59598 0.0311 0.2967 -0.09937 2022 1 20 59599 0.0299 0.2982 -0.09912 2022 1 21 59600 0.0288 0.2998 -0.09907 2022 1 22 59601 0.0277 0.3014 -0.09924 2022 1 23 59602 0.0267 0.3030 -0.09960 2022 1 24 59603 0.0256 0.3046 -0.10007 2022 1 25 59604 0.0246 0.3063 -0.10057 2022 1 26 59605 0.0236 0.3079 -0.10099 2022 1 27 59606 0.0227 0.3096 -0.10124 2022 1 28 59607 0.0217 0.3113 -0.10128 2022 1 29 59608 0.0209 0.3130 -0.10112 2022 1 30 59609 0.0200 0.3147 -0.10084 2022 1 31 59610 0.0192 0.3164 -0.10056 2022 2 1 59611 0.0183 0.3182 -0.10041 2022 2 2 59612 0.0176 0.3199 -0.10047 2022 2 3 59613 0.0168 0.3217 -0.10075 2022 2 4 59614 0.0161 0.3235 -0.10119 2022 2 5 59615 0.0154 0.3252 -0.10171 2022 2 6 59616 0.0148 0.3270 -0.10221 2022 2 7 59617 0.0142 0.3289 -0.10255 2022 2 8 59618 0.0136 0.3307 -0.10274 2022 2 9 59619 0.0130 0.3325 -0.10275 2022 2 10 59620 0.0125 0.3343 -0.10259 2022 2 11 59621 0.0120 0.3362 -0.10228 2022 2 12 59622 0.0116 0.3380 -0.10187 2022 2 13 59623 0.0111 0.3399 -0.10141 2022 2 14 59624 0.0108 0.3418 -0.10098 2022 2 15 59625 0.0104 0.3436 -0.10065 2022 2 16 59626 0.0101 0.3455 -0.10048 2022 2 17 59627 0.0098 0.3474 -0.10053 2022 2 18 59628 0.0095 0.3493 -0.10081 2022 2 19 59629 0.0093 0.3512 -0.10129 2022 2 20 59630 0.0091 0.3531 -0.10191 2022 2 21 59631 0.0090 0.3550 -0.10257 2022 2 22 59632 0.0088 0.3569 -0.10316 2022 2 23 59633 0.0087 0.3588 -0.10359 2022 2 24 59634 0.0087 0.3607 -0.10382 2022 2 25 59635 0.0087 0.3626 -0.10384 2022 2 26 59636 0.0087 0.3646 -0.10372 2022 2 27 59637 0.0087 0.3665 -0.10357 2022 2 28 59638 0.0088 0.3684 -0.10351 2022 3 1 59639 0.0089 0.3703 -0.10364 2022 3 2 59640 0.0091 0.3722 -0.10400 2022 3 3 59641 0.0093 0.3741 -0.10458 2022 3 4 59642 0.0095 0.3760 -0.10528 2022 3 5 59643 0.0097 0.3779 -0.10602 2022 3 6 59644 0.0100 0.3798 -0.10670 2022 3 7 59645 0.0104 0.3817 -0.10723 2022 3 8 59646 0.0107 0.3836 -0.10758 2022 3 9 59647 0.0111 0.3855 -0.10774 2022 3 10 59648 0.0115 0.3874 -0.10773 2022 3 11 59649 0.0120 0.3893 -0.10759 2022 3 12 59650 0.0125 0.3911 -0.10738 2022 3 13 59651 0.0130 0.3930 -0.10716 2022 3 14 59652 0.0135 0.3948 -0.10702 2022 3 15 59653 0.0141 0.3967 -0.10702 2022 3 16 59654 0.0148 0.3985 -0.10723 2022 3 17 59655 0.0154 0.4004 -0.10768 2022 3 18 59656 0.0161 0.4022 -0.10836 2022 3 19 59657 0.0168 0.4040 -0.10921 2022 3 20 59658 0.0176 0.4058 -0.11014 2022 3 21 59659 0.0184 0.4076 -0.11101 2022 3 22 59660 0.0192 0.4094 -0.11172 2022 3 23 59661 0.0200 0.4111 -0.11220 2022 3 24 59662 0.0209 0.4129 -0.11245 2022 3 25 59663 0.0218 0.4146 -0.11252 2022 3 26 59664 0.0228 0.4164 -0.11252 2022 3 27 59665 0.0238 0.4181 -0.11256 2022 3 28 59666 0.0248 0.4198 -0.11275 2022 3 29 59667 0.0258 0.4215 -0.11314 2022 3 30 59668 0.0269 0.4231 -0.11376 2022 3 31 59669 0.0280 0.4248 -0.11453 2022 4 1 59670 0.0291 0.4264 -0.11538 2022 4 2 59671 0.0302 0.4280 -0.11620 2022 4 3 59672 0.0314 0.4296 -0.11691 2022 4 4 59673 0.0326 0.4312 -0.11743 2022 4 5 59674 0.0339 0.4328 -0.11776 2022 4 6 59675 0.0352 0.4344 -0.11790 2022 4 7 59676 0.0365 0.4359 -0.11787 2022 4 8 59677 0.0378 0.4374 -0.11774 2022 4 9 59678 0.0391 0.4389 -0.11757 2022 4 10 59679 0.0405 0.4404 -0.11744 2022 4 11 59680 0.0419 0.4418 -0.11742 2022 4 12 59681 0.0434 0.4433 -0.11759 2022 4 13 59682 0.0448 0.4447 -0.11797 2022 4 14 59683 0.0463 0.4461 -0.11860 2022 4 15 59684 0.0478 0.4474 -0.11945 2022 4 16 59685 0.0493 0.4488 -0.12042 2022 4 17 59686 0.0509 0.4501 -0.12140 2022 4 18 59687 0.0525 0.4514 -0.12227 2022 4 19 59688 0.0541 0.4527 -0.12291 2022 4 20 59689 0.0557 0.4539 -0.12331 2022 4 21 59690 0.0574 0.4551 -0.12351 2022 4 22 59691 0.0590 0.4563 -0.12361 2022 4 23 59692 0.0607 0.4575 -0.12374 2022 4 24 59693 0.0625 0.4587 -0.12401 2022 4 25 59694 0.0642 0.4598 -0.12450 2022 4 26 59695 0.0659 0.4609 -0.12523 2022 4 27 59696 0.0677 0.4620 -0.12616 2022 4 28 59697 0.0695 0.4630 -0.12721 2022 4 29 59698 0.0713 0.4641 -0.12828 2022 4 30 59699 0.0732 0.4651 -0.12927 2022 5 1 59700 0.0750 0.4660 -0.13009 2022 5 2 59701 0.0769 0.4670 -0.13069 2022 5 3 59702 0.0788 0.4679 -0.13103 2022 5 4 59703 0.0807 0.4688 -0.13114 2022 5 5 59704 0.0826 0.4696 -0.13104 2022 5 6 59705 0.0845 0.4705 -0.13080 2022 5 7 59706 0.0865 0.4713 -0.13049 2022 5 8 59707 0.0884 0.4720 -0.13018 2022 5 9 59708 0.0904 0.4728 -0.12997 2022 5 10 59709 0.0924 0.4735 -0.12990 2022 5 11 59710 0.0944 0.4742 -0.13004 2022 5 12 59711 0.0964 0.4748 -0.13037 2022 5 13 59712 0.0984 0.4754 -0.13086 2022 5 14 59713 0.1005 0.4760 -0.13141 2022 5 15 59714 0.1025 0.4766 -0.13187 2022 5 16 59715 0.1046 0.4771 -0.13212 2022 5 17 59716 0.1066 0.4776 -0.13208 2022 5 18 59717 0.1087 0.4781 -0.13175 2022 5 19 59718 0.1108 0.4785 -0.13121 2022 5 20 59719 0.1129 0.4790 -0.13060 2022 5 21 59720 0.1150 0.4793 -0.13006 2022 5 22 59721 0.1171 0.4797 -0.12968 2022 5 23 59722 0.1192 0.4800 -0.12947 2022 5 24 59723 0.1213 0.4803 -0.12941 2022 5 25 59724 0.1234 0.4805 -0.12939 2022 5 26 59725 0.1255 0.4808 -0.12932 2022 5 27 59726 0.1277 0.4809 -0.12912 2022 5 28 59727 0.1298 0.4811 -0.12873 2022 5 29 59728 0.1319 0.4812 -0.12810 2022 5 30 59729 0.1341 0.4813 -0.12721 2022 5 31 59730 0.1362 0.4814 -0.12611 2022 6 1 59731 0.1383 0.4814 -0.12485 2022 6 2 59732 0.1405 0.4814 -0.12345 2022 6 3 59733 0.1426 0.4814 -0.12206 2022 6 4 59734 0.1447 0.4813 -0.12072 2022 6 5 59735 0.1469 0.4812 -0.11951 2022 6 6 59736 0.1490 0.4811 -0.11849 2022 6 7 59737 0.1511 0.4809 -0.11765 2022 6 8 59738 0.1533 0.4807 -0.11699 2022 6 9 59739 0.1554 0.4805 -0.11644 2022 6 10 59740 0.1575 0.4803 -0.11594 2022 6 11 59741 0.1596 0.4800 -0.11547 2022 6 12 59742 0.1617 0.4796 -0.11483 2022 6 13 59743 0.1638 0.4793 -0.11397 2022 6 14 59744 0.1659 0.4789 -0.11292 2022 6 15 59745 0.1680 0.4785 -0.11169 2022 6 16 59746 0.1701 0.4781 -0.11038 2022 6 17 59747 0.1722 0.4776 -0.10910 2022 6 18 59748 0.1742 0.4771 -0.10796 2022 6 19 59749 0.1763 0.4765 -0.10705 2022 6 20 59750 0.1783 0.4760 -0.10631 2022 6 21 59751 0.1804 0.4754 -0.10569 2022 6 22 59752 0.1824 0.4747 -0.10510 2022 6 23 59753 0.1844 0.4741 -0.10443 2022 6 24 59754 0.1864 0.4734 -0.10360 2022 6 25 59755 0.1884 0.4727 -0.10262 2022 6 26 59756 0.1903 0.4719 -0.10144 2022 6 27 59757 0.1923 0.4712 -0.09996 2022 6 28 59758 0.1942 0.4704 -0.09830 2022 6 29 59759 0.1962 0.4695 -0.09651 2022 6 30 59760 0.1981 0.4687 -0.09465 2022 7 1 59761 0.2000 0.4678 -0.09284 2022 7 2 59762 0.2019 0.4668 -0.09111 2022 7 3 59763 0.2037 0.4659 -0.08953 2022 7 4 59764 0.2056 0.4649 -0.08809 2022 7 5 59765 0.2074 0.4639 -0.08691 2022 7 6 59766 0.2092 0.4629 -0.08593 2022 7 7 59767 0.2110 0.4618 -0.08515 2022 7 8 59768 0.2128 0.4607 -0.08451 2022 7 9 59769 0.2145 0.4596 -0.08383 2022 7 10 59770 0.2162 0.4585 -0.08308 2022 7 11 59771 0.2179 0.4573 -0.08218 2022 7 12 59772 0.2196 0.4562 -0.08109 2022 7 13 59773 0.2213 0.4549 -0.07994 2022 7 14 59774 0.2229 0.4537 -0.07879 2022 7 15 59775 0.2246 0.4525 -0.07777 2022 7 16 59776 0.2262 0.4512 -0.07697 2022 7 17 59777 0.2277 0.4499 -0.07640 2022 7 18 59778 0.2293 0.4485 -0.07601 2022 7 19 59779 0.2308 0.4472 -0.07562 2022 7 20 59780 0.2323 0.4458 -0.07514 2022 7 21 59781 0.2338 0.4444 -0.07450 2022 7 22 59782 0.2352 0.4430 -0.07367 2022 7 23 59783 0.2366 0.4415 -0.07263 2022 7 24 59784 0.2380 0.4401 -0.07142 2022 7 25 59785 0.2394 0.4386 -0.07003 2022 7 26 59786 0.2407 0.4371 -0.06850 2022 7 27 59787 0.2420 0.4356 -0.06686 2022 7 28 59788 0.2433 0.4340 -0.06517 2022 7 29 59789 0.2446 0.4325 -0.06358 2022 7 30 59790 0.2458 0.4309 -0.06220 2022 7 31 59791 0.2470 0.4293 -0.06089 2022 8 1 59792 0.2482 0.4277 -0.05972 2022 8 2 59793 0.2493 0.4260 -0.05876 2022 8 3 59794 0.2504 0.4244 -0.05795 2022 8 4 59795 0.2515 0.4227 -0.05719 2022 8 5 59796 0.2526 0.4210 -0.05641 2022 8 6 59797 0.2536 0.4193 -0.05542 2022 8 7 59798 0.2546 0.4176 -0.05425 2022 8 8 59799 0.2555 0.4159 -0.05285 2022 8 9 59800 0.2564 0.4142 -0.05131 2022 8 10 59801 0.2573 0.4124 -0.04977 2022 8 11 59802 0.2582 0.4107 -0.04835 2022 8 12 59803 0.2590 0.4089 -0.04715 2022 8 13 59804 0.2598 0.4071 -0.04637 2022 8 14 59805 0.2606 0.4053 -0.04581 2022 8 15 59806 0.2613 0.4035 -0.04540 2022 8 16 59807 0.2620 0.4017 -0.04499 2022 8 17 59808 0.2626 0.3998 -0.04440 2022 8 18 59809 0.2633 0.3980 -0.04359 2022 8 19 59810 0.2639 0.3961 -0.04261 2022 8 20 59811 0.2644 0.3943 -0.04146 2022 8 21 59812 0.2650 0.3924 -0.04013 2022 8 22 59813 0.2654 0.3905 -0.03867 2022 8 23 59814 0.2659 0.3887 -0.03716 2022 8 24 59815 0.2663 0.3868 -0.03569 2022 8 25 59816 0.2667 0.3849 -0.03434 2022 8 26 59817 0.2671 0.3830 -0.03318 2022 8 27 59818 0.2674 0.3811 -0.03222 2022 8 28 59819 0.2677 0.3792 -0.03153 2022 8 29 59820 0.2679 0.3773 -0.03109 2022 8 30 59821 0.2681 0.3753 -0.03078 2022 8 31 59822 0.2683 0.3734 -0.03051 2022 9 1 59823 0.2685 0.3715 -0.03022 2022 9 2 59824 0.2686 0.3696 -0.02984 2022 9 3 59825 0.2686 0.3677 -0.02931 2022 9 4 59826 0.2687 0.3657 -0.02859 2022 9 5 59827 0.2687 0.3638 -0.02780 2022 9 6 59828 0.2687 0.3619 -0.02690 2022 9 7 59829 0.2686 0.3600 -0.02605 2022 9 8 59830 0.2685 0.3581 -0.02536 2022 9 9 59831 0.2683 0.3562 -0.02492 2022 9 10 59832 0.2682 0.3542 -0.02477 2022 9 11 59833 0.2680 0.3523 -0.02473 2022 9 12 59834 0.2677 0.3504 -0.02482 2022 9 13 59835 0.2675 0.3485 -0.02489 2022 9 14 59836 0.2671 0.3466 -0.02481 2022 9 15 59837 0.2668 0.3447 -0.02450 2022 9 16 59838 0.2664 0.3429 -0.02400 2022 9 17 59839 0.2660 0.3410 -0.02339 2022 9 18 59840 0.2656 0.3391 -0.02265 2022 9 19 59841 0.2651 0.3372 -0.02190 2022 9 20 59842 0.2646 0.3354 -0.02117 2022 9 21 59843 0.2640 0.3335 -0.02054 2022 9 22 59844 0.2634 0.3317 -0.02006 2022 9 23 59845 0.2628 0.3299 -0.01972 2022 9 24 59846 0.2622 0.3280 -0.01957 2022 9 25 59847 0.2615 0.3262 -0.01963 2022 9 26 59848 0.2608 0.3244 -0.01989 2022 9 27 59849 0.2600 0.3227 -0.02025 2022 9 28 59850 0.2592 0.3209 -0.02055 2022 9 29 59851 0.2584 0.3191 -0.02071 2022 9 30 59852 0.2576 0.3174 -0.02070 2022 10 1 59853 0.2567 0.3156 -0.02041 2022 10 2 59854 0.2558 0.3139 -0.02008 2022 10 3 59855 0.2549 0.3122 -0.01962 2022 10 4 59856 0.2539 0.3105 -0.01918 2022 10 5 59857 0.2529 0.3088 -0.01886 2022 10 6 59858 0.2519 0.3072 -0.01869 2022 10 7 59859 0.2508 0.3055 -0.01876 2022 10 8 59860 0.2497 0.3039 -0.01909 2022 10 9 59861 0.2486 0.3023 -0.01955 2022 10 10 59862 0.2474 0.3007 -0.02009 2022 10 11 59863 0.2463 0.2991 -0.02050 2022 10 12 59864 0.2451 0.2976 -0.02072 2022 10 13 59865 0.2438 0.2960 -0.02073 2022 10 14 59866 0.2426 0.2945 -0.02051 2022 10 15 59867 0.2413 0.2930 -0.02016 2022 10 16 59868 0.2400 0.2915 -0.01969 2022 10 17 59869 0.2386 0.2901 -0.01921 2022 10 18 59870 0.2372 0.2886 -0.01884 2022 10 19 59871 0.2359 0.2872 -0.01851 2022 10 20 59872 0.2344 0.2858 -0.01828 2022 10 21 59873 0.2330 0.2845 -0.01826 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) 59486 -117.41 0.67 -8.83 0.08 59487 -117.17 0.67 -8.97 0.08 59488 -116.71 0.67 -9.06 0.08 59489 -116.20 0.32 -9.01 0.16 59490 -115.93 0.85 -8.85 0.18 59491 -115.99 0.85 -8.62 0.18 59492 -116.21 0.85 -8.40 0.18 59493 -116.45 0.81 -8.27 0.17 59494 -116.68 0.81 -8.32 0.17 59495 -116.92 0.81 -8.53 0.17 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59486 0.312 0.268 -0.071 0.084 59487 0.337 0.268 -0.095 0.084 59488 0.359 0.268 -0.119 0.084 59489 0.375 0.128 -0.142 0.160 59490 0.380 0.339 -0.160 0.183 59491 0.371 0.339 -0.173 0.183 59492 0.345 0.339 -0.178 0.183 59493 0.299 0.322 -0.174 0.171 59494 0.237 0.322 -0.162 0.171 59495 0.166 0.322 -0.146 0.171 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).