********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 16 December 2021 Vol. XXXIV No. 050 ______________________________________________________________________ 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. * * * * Starting on the 18 Nov 2021, new versions of the USNO VLBI * * solutions (usn2021c.eoxy and usn2021c.eopi) are being used. * * The effect appears to be less than 0.1 mas in polar motion and * * 10 us in UT1-UTC. * * * * 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 12 10 59558 0.10133 .00009 0.25711 .00009 -0.107362 0.000026 21 12 11 59559 0.09839 .00009 0.25733 .00009 -0.107744 0.000019 21 12 12 59560 0.09533 .00009 0.25738 .00009 -0.108190 0.000015 21 12 13 59561 0.09262 .00009 0.25753 .00009 -0.108635 0.000013 21 12 14 59562 0.09024 .00009 0.25809 .00009 -0.108965 0.000013 21 12 15 59563 0.08782 .00009 0.25893 .00009 -0.109192 0.000013 21 12 16 59564 0.08532 .00009 0.25975 .00009 -0.109286 0.000012 _______________________________________________________________________ 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 = 0.1379 - 0.0156 cos A - 0.0912 sin A - 0.0336 cos C - 0.0151 sin C y = 0.3546 - 0.0826 cos A + 0.0100 sin A - 0.0151 cos C + 0.0336 sin C UT1-UTC = -0.1173 + 0.00021 (MJD - 59572) - (UT2-UT1) where A = 2*pi*(MJD-59564)/365.25 and C = 2*pi*(MJD-59564)/435. TAI-UTC(MJD 59565) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59564)**0.80 S t = 0.00025 (MJD-59564)**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 12 17 59565 0.0829 0.2605 -0.10930 2021 12 18 59566 0.0806 0.2612 -0.10917 2021 12 19 59567 0.0784 0.2619 -0.10890 2021 12 20 59568 0.0764 0.2626 -0.10854 2021 12 21 59569 0.0744 0.2634 -0.10815 2021 12 22 59570 0.0724 0.2643 -0.10780 2021 12 23 59571 0.0706 0.2652 -0.10757 2021 12 24 59572 0.0687 0.2662 -0.10751 2021 12 25 59573 0.0669 0.2672 -0.10765 2021 12 26 59574 0.0651 0.2682 -0.10799 2021 12 27 59575 0.0634 0.2691 -0.10853 2021 12 28 59576 0.0618 0.2701 -0.10918 2021 12 29 59577 0.0603 0.2711 -0.10981 2021 12 30 59578 0.0588 0.2722 -0.11030 2021 12 31 59579 0.0574 0.2732 -0.11059 2022 1 1 59580 0.0560 0.2743 -0.11062 2022 1 2 59581 0.0546 0.2754 -0.11043 2022 1 3 59582 0.0532 0.2766 -0.11011 2022 1 4 59583 0.0518 0.2777 -0.10980 2022 1 5 59584 0.0505 0.2788 -0.10959 2022 1 6 59585 0.0492 0.2800 -0.10956 2022 1 7 59586 0.0478 0.2812 -0.10969 2022 1 8 59587 0.0465 0.2825 -0.10992 2022 1 9 59588 0.0452 0.2837 -0.11016 2022 1 10 59589 0.0440 0.2850 -0.11033 2022 1 11 59590 0.0427 0.2863 -0.11037 2022 1 12 59591 0.0415 0.2877 -0.11024 2022 1 13 59592 0.0403 0.2890 -0.10993 2022 1 14 59593 0.0391 0.2904 -0.10945 2022 1 15 59594 0.0379 0.2918 -0.10884 2022 1 16 59595 0.0367 0.2932 -0.10813 2022 1 17 59596 0.0355 0.2947 -0.10738 2022 1 18 59597 0.0344 0.2962 -0.10667 2022 1 19 59598 0.0333 0.2977 -0.10607 2022 1 20 59599 0.0322 0.2992 -0.10563 2022 1 21 59600 0.0312 0.3007 -0.10541 2022 1 22 59601 0.0301 0.3023 -0.10539 2022 1 23 59602 0.0291 0.3039 -0.10554 2022 1 24 59603 0.0281 0.3055 -0.10581 2022 1 25 59604 0.0272 0.3071 -0.10611 2022 1 26 59605 0.0263 0.3087 -0.10634 2022 1 27 59606 0.0254 0.3104 -0.10640 2022 1 28 59607 0.0245 0.3120 -0.10624 2022 1 29 59608 0.0237 0.3137 -0.10588 2022 1 30 59609 0.0228 0.3154 -0.10540 2022 1 31 59610 0.0221 0.3171 -0.10493 2022 2 1 59611 0.0213 0.3188 -0.10458 2022 2 2 59612 0.0206 0.3205 -0.10444 2022 2 3 59613 0.0199 0.3223 -0.10451 2022 2 4 59614 0.0193 0.3240 -0.10474 2022 2 5 59615 0.0186 0.3258 -0.10504 2022 2 6 59616 0.0181 0.3276 -0.10532 2022 2 7 59617 0.0175 0.3293 -0.10550 2022 2 8 59618 0.0170 0.3311 -0.10553 2022 2 9 59619 0.0165 0.3329 -0.10538 2022 2 10 59620 0.0160 0.3347 -0.10505 2022 2 11 59621 0.0156 0.3366 -0.10457 2022 2 12 59622 0.0152 0.3384 -0.10397 2022 2 13 59623 0.0148 0.3402 -0.10334 2022 2 14 59624 0.0145 0.3420 -0.10272 2022 2 15 59625 0.0142 0.3439 -0.10221 2022 2 16 59626 0.0139 0.3457 -0.10186 2022 2 17 59627 0.0137 0.3476 -0.10173 2022 2 18 59628 0.0135 0.3494 -0.10183 2022 2 19 59629 0.0133 0.3513 -0.10214 2022 2 20 59630 0.0132 0.3532 -0.10259 2022 2 21 59631 0.0131 0.3550 -0.10308 2022 2 22 59632 0.0130 0.3569 -0.10351 2022 2 23 59633 0.0129 0.3588 -0.10377 2022 2 24 59634 0.0129 0.3607 -0.10383 2022 2 25 59635 0.0130 0.3626 -0.10369 2022 2 26 59636 0.0130 0.3644 -0.10341 2022 2 27 59637 0.0131 0.3663 -0.10310 2022 2 28 59638 0.0133 0.3682 -0.10288 2022 3 1 59639 0.0134 0.3701 -0.10286 2022 3 2 59640 0.0136 0.3720 -0.10308 2022 3 3 59641 0.0138 0.3738 -0.10352 2022 3 4 59642 0.0141 0.3757 -0.10410 2022 3 5 59643 0.0144 0.3776 -0.10473 2022 3 6 59644 0.0147 0.3795 -0.10530 2022 3 7 59645 0.0151 0.3813 -0.10574 2022 3 8 59646 0.0155 0.3832 -0.10602 2022 3 9 59647 0.0159 0.3850 -0.10611 2022 3 10 59648 0.0164 0.3869 -0.10604 2022 3 11 59649 0.0169 0.3887 -0.10585 2022 3 12 59650 0.0174 0.3906 -0.10561 2022 3 13 59651 0.0180 0.3924 -0.10537 2022 3 14 59652 0.0185 0.3942 -0.10521 2022 3 15 59653 0.0192 0.3961 -0.10520 2022 3 16 59654 0.0198 0.3979 -0.10540 2022 3 17 59655 0.0205 0.3997 -0.10584 2022 3 18 59656 0.0212 0.4015 -0.10652 2022 3 19 59657 0.0220 0.4032 -0.10736 2022 3 20 59658 0.0228 0.4050 -0.10828 2022 3 21 59659 0.0236 0.4068 -0.10914 2022 3 22 59660 0.0244 0.4085 -0.10985 2022 3 23 59661 0.0253 0.4103 -0.11032 2022 3 24 59662 0.0262 0.4120 -0.11056 2022 3 25 59663 0.0272 0.4137 -0.11061 2022 3 26 59664 0.0281 0.4154 -0.11060 2022 3 27 59665 0.0291 0.4171 -0.11063 2022 3 28 59666 0.0302 0.4187 -0.11081 2022 3 29 59667 0.0312 0.4204 -0.11120 2022 3 30 59668 0.0323 0.4220 -0.11181 2022 3 31 59669 0.0334 0.4237 -0.11259 2022 4 1 59670 0.0346 0.4253 -0.11344 2022 4 2 59671 0.0358 0.4269 -0.11427 2022 4 3 59672 0.0370 0.4285 -0.11499 2022 4 4 59673 0.0382 0.4300 -0.11549 2022 4 5 59674 0.0395 0.4315 -0.11579 2022 4 6 59675 0.0407 0.4331 -0.11590 2022 4 7 59676 0.0421 0.4346 -0.11584 2022 4 8 59677 0.0434 0.4361 -0.11567 2022 4 9 59678 0.0448 0.4375 -0.11547 2022 4 10 59679 0.0462 0.4390 -0.11529 2022 4 11 59680 0.0476 0.4404 -0.11523 2022 4 12 59681 0.0490 0.4418 -0.11533 2022 4 13 59682 0.0505 0.4432 -0.11566 2022 4 14 59683 0.0520 0.4445 -0.11622 2022 4 15 59684 0.0535 0.4459 -0.11698 2022 4 16 59685 0.0550 0.4472 -0.11787 2022 4 17 59686 0.0566 0.4485 -0.11875 2022 4 18 59687 0.0582 0.4498 -0.11949 2022 4 19 59688 0.0598 0.4510 -0.12000 2022 4 20 59689 0.0614 0.4522 -0.12025 2022 4 21 59690 0.0631 0.4534 -0.12026 2022 4 22 59691 0.0647 0.4546 -0.12015 2022 4 23 59692 0.0664 0.4558 -0.12004 2022 4 24 59693 0.0682 0.4569 -0.12004 2022 4 25 59694 0.0699 0.4580 -0.12021 2022 4 26 59695 0.0716 0.4591 -0.12058 2022 4 27 59696 0.0734 0.4601 -0.12110 2022 4 28 59697 0.0752 0.4611 -0.12171 2022 4 29 59698 0.0770 0.4621 -0.12231 2022 4 30 59699 0.0788 0.4631 -0.12281 2022 5 1 59700 0.0807 0.4640 -0.12315 2022 5 2 59701 0.0825 0.4649 -0.12328 2022 5 3 59702 0.0844 0.4658 -0.12321 2022 5 4 59703 0.0863 0.4667 -0.12294 2022 5 5 59704 0.0882 0.4675 -0.12252 2022 5 6 59705 0.0901 0.4683 -0.12203 2022 5 7 59706 0.0921 0.4691 -0.12154 2022 5 8 59707 0.0940 0.4698 -0.12112 2022 5 9 59708 0.0960 0.4705 -0.12083 2022 5 10 59709 0.0979 0.4712 -0.12072 2022 5 11 59710 0.0999 0.4719 -0.12083 2022 5 12 59711 0.1019 0.4725 -0.12114 2022 5 13 59712 0.1039 0.4731 -0.12161 2022 5 14 59713 0.1059 0.4737 -0.12214 2022 5 15 59714 0.1080 0.4742 -0.12259 2022 5 16 59715 0.1100 0.4747 -0.12285 2022 5 17 59716 0.1120 0.4752 -0.12282 2022 5 18 59717 0.1141 0.4756 -0.12253 2022 5 19 59718 0.1162 0.4760 -0.12207 2022 5 20 59719 0.1182 0.4764 -0.12154 2022 5 21 59720 0.1203 0.4767 -0.12110 2022 5 22 59721 0.1224 0.4771 -0.12081 2022 5 23 59722 0.1245 0.4773 -0.12070 2022 5 24 59723 0.1265 0.4776 -0.12074 2022 5 25 59724 0.1286 0.4778 -0.12086 2022 5 26 59725 0.1307 0.4780 -0.12098 2022 5 27 59726 0.1328 0.4782 -0.12100 2022 5 28 59727 0.1349 0.4783 -0.12088 2022 5 29 59728 0.1370 0.4784 -0.12055 2022 5 30 59729 0.1391 0.4785 -0.12002 2022 5 31 59730 0.1412 0.4785 -0.11928 2022 6 1 59731 0.1433 0.4785 -0.11838 2022 6 2 59732 0.1454 0.4785 -0.11738 2022 6 3 59733 0.1475 0.4784 -0.11635 2022 6 4 59734 0.1496 0.4783 -0.11536 2022 6 5 59735 0.1517 0.4782 -0.11448 2022 6 6 59736 0.1538 0.4780 -0.11376 2022 6 7 59737 0.1559 0.4778 -0.11322 2022 6 8 59738 0.1580 0.4776 -0.11288 2022 6 9 59739 0.1601 0.4774 -0.11270 2022 6 10 59740 0.1622 0.4771 -0.11261 2022 6 11 59741 0.1642 0.4767 -0.11251 2022 6 12 59742 0.1663 0.4764 -0.11228 2022 6 13 59743 0.1684 0.4760 -0.11181 2022 6 14 59744 0.1704 0.4756 -0.11107 2022 6 15 59745 0.1725 0.4752 -0.11011 2022 6 16 59746 0.1745 0.4747 -0.10905 2022 6 17 59747 0.1765 0.4742 -0.10803 2022 6 18 59748 0.1785 0.4736 -0.10717 2022 6 19 59749 0.1806 0.4731 -0.10651 2022 6 20 59750 0.1826 0.4725 -0.10604 2022 6 21 59751 0.1845 0.4719 -0.10567 2022 6 22 59752 0.1865 0.4712 -0.10533 2022 6 23 59753 0.1885 0.4705 -0.10492 2022 6 24 59754 0.1904 0.4698 -0.10439 2022 6 25 59755 0.1924 0.4690 -0.10369 2022 6 26 59756 0.1943 0.4683 -0.10281 2022 6 27 59757 0.1962 0.4675 -0.10173 2022 6 28 59758 0.1981 0.4666 -0.10048 2022 6 29 59759 0.1999 0.4658 -0.09910 2022 6 30 59760 0.2018 0.4649 -0.09765 2022 7 1 59761 0.2037 0.4639 -0.09621 2022 7 2 59762 0.2055 0.4630 -0.09484 2022 7 3 59763 0.2073 0.4620 -0.09362 2022 7 4 59764 0.2091 0.4610 -0.09258 2022 7 5 59765 0.2109 0.4600 -0.09176 2022 7 6 59766 0.2126 0.4589 -0.09114 2022 7 7 59767 0.2143 0.4578 -0.09068 2022 7 8 59768 0.2161 0.4567 -0.09028 2022 7 9 59769 0.2177 0.4556 -0.08985 2022 7 10 59770 0.2194 0.4544 -0.08927 2022 7 11 59771 0.2211 0.4532 -0.08847 2022 7 12 59772 0.2227 0.4520 -0.08747 2022 7 13 59773 0.2243 0.4508 -0.08634 2022 7 14 59774 0.2259 0.4495 -0.08523 2022 7 15 59775 0.2275 0.4482 -0.08426 2022 7 16 59776 0.2290 0.4469 -0.08353 2022 7 17 59777 0.2305 0.4455 -0.08304 2022 7 18 59778 0.2320 0.4442 -0.08269 2022 7 19 59779 0.2335 0.4428 -0.08239 2022 7 20 59780 0.2349 0.4414 -0.08202 2022 7 21 59781 0.2363 0.4400 -0.08153 2022 7 22 59782 0.2377 0.4385 -0.08088 2022 7 23 59783 0.2391 0.4370 -0.08008 2022 7 24 59784 0.2404 0.4355 -0.07910 2022 7 25 59785 0.2417 0.4340 -0.07794 2022 7 26 59786 0.2430 0.4325 -0.07666 2022 7 27 59787 0.2442 0.4309 -0.07534 2022 7 28 59788 0.2455 0.4294 -0.07405 2022 7 29 59789 0.2467 0.4278 -0.07286 2022 7 30 59790 0.2478 0.4262 -0.07194 2022 7 31 59791 0.2490 0.4246 -0.07116 2022 8 1 59792 0.2501 0.4229 -0.07061 2022 8 2 59793 0.2512 0.4212 -0.07020 2022 8 3 59794 0.2522 0.4196 -0.06994 2022 8 4 59795 0.2532 0.4179 -0.06970 2022 8 5 59796 0.2542 0.4162 -0.06936 2022 8 6 59797 0.2552 0.4144 -0.06882 2022 8 7 59798 0.2561 0.4127 -0.06801 2022 8 8 59799 0.2570 0.4110 -0.06704 2022 8 9 59800 0.2579 0.4092 -0.06584 2022 8 10 59801 0.2587 0.4074 -0.06453 2022 8 11 59802 0.2595 0.4056 -0.06333 2022 8 12 59803 0.2603 0.4038 -0.06239 2022 8 13 59804 0.2610 0.4020 -0.06166 2022 8 14 59805 0.2617 0.4002 -0.06111 2022 8 15 59806 0.2624 0.3983 -0.06067 2022 8 16 59807 0.2630 0.3965 -0.06020 2022 8 17 59808 0.2636 0.3946 -0.05968 2022 8 18 59809 0.2642 0.3927 -0.05907 2022 8 19 59810 0.2647 0.3909 -0.05828 2022 8 20 59811 0.2652 0.3890 -0.05732 2022 8 21 59812 0.2657 0.3871 -0.05622 2022 8 22 59813 0.2661 0.3852 -0.05505 2022 8 23 59814 0.2665 0.3833 -0.05383 2022 8 24 59815 0.2669 0.3814 -0.05251 2022 8 25 59816 0.2672 0.3795 -0.05128 2022 8 26 59817 0.2675 0.3775 -0.05026 2022 8 27 59818 0.2678 0.3756 -0.04955 2022 8 28 59819 0.2680 0.3737 -0.04903 2022 8 29 59820 0.2682 0.3717 -0.04874 2022 8 30 59821 0.2684 0.3698 -0.04864 2022 8 31 59822 0.2685 0.3679 -0.04856 2022 9 1 59823 0.2686 0.3659 -0.04846 2022 9 2 59824 0.2686 0.3640 -0.04821 2022 9 3 59825 0.2686 0.3620 -0.04774 2022 9 4 59826 0.2686 0.3601 -0.04703 2022 9 5 59827 0.2686 0.3581 -0.04614 2022 9 6 59828 0.2685 0.3562 -0.04515 2022 9 7 59829 0.2684 0.3543 -0.04428 2022 9 8 59830 0.2682 0.3523 -0.04359 2022 9 9 59831 0.2680 0.3504 -0.04316 2022 9 10 59832 0.2678 0.3484 -0.04306 2022 9 11 59833 0.2676 0.3465 -0.04314 2022 9 12 59834 0.2673 0.3446 -0.04335 2022 9 13 59835 0.2670 0.3427 -0.04347 2022 9 14 59836 0.2666 0.3408 -0.04335 2022 9 15 59837 0.2662 0.3388 -0.04298 2022 9 16 59838 0.2658 0.3369 -0.04238 2022 9 17 59839 0.2653 0.3350 -0.04154 2022 9 18 59840 0.2648 0.3331 -0.04052 2022 9 19 59841 0.2643 0.3313 -0.03938 2022 9 20 59842 0.2637 0.3294 -0.03825 2022 9 21 59843 0.2631 0.3275 -0.03719 2022 9 22 59844 0.2625 0.3257 -0.03624 2022 9 23 59845 0.2619 0.3238 -0.03554 2022 9 24 59846 0.2612 0.3220 -0.03506 2022 9 25 59847 0.2604 0.3202 -0.03483 2022 9 26 59848 0.2597 0.3183 -0.03480 2022 9 27 59849 0.2589 0.3165 -0.03487 2022 9 28 59850 0.2581 0.3147 -0.03491 2022 9 29 59851 0.2572 0.3130 -0.03478 2022 9 30 59852 0.2564 0.3112 -0.03442 2022 10 1 59853 0.2554 0.3095 -0.03387 2022 10 2 59854 0.2545 0.3077 -0.03312 2022 10 3 59855 0.2535 0.3060 -0.03230 2022 10 4 59856 0.2525 0.3043 -0.03157 2022 10 5 59857 0.2515 0.3026 -0.03103 2022 10 6 59858 0.2504 0.3009 -0.03076 2022 10 7 59859 0.2493 0.2993 -0.03073 2022 10 8 59860 0.2482 0.2976 -0.03093 2022 10 9 59861 0.2470 0.2960 -0.03127 2022 10 10 59862 0.2459 0.2944 -0.03162 2022 10 11 59863 0.2447 0.2928 -0.03188 2022 10 12 59864 0.2434 0.2912 -0.03197 2022 10 13 59865 0.2422 0.2897 -0.03184 2022 10 14 59866 0.2409 0.2882 -0.03147 2022 10 15 59867 0.2396 0.2867 -0.03097 2022 10 16 59868 0.2382 0.2852 -0.03037 2022 10 17 59869 0.2368 0.2837 -0.02962 2022 10 18 59870 0.2355 0.2823 -0.02890 2022 10 19 59871 0.2340 0.2808 -0.02827 2022 10 20 59872 0.2326 0.2794 -0.02779 2022 10 21 59873 0.2311 0.2781 -0.02752 2022 10 22 59874 0.2296 0.2767 -0.02746 2022 10 23 59875 0.2281 0.2754 -0.02757 2022 10 24 59876 0.2266 0.2741 -0.02779 2022 10 25 59877 0.2250 0.2728 -0.02810 2022 10 26 59878 0.2234 0.2715 -0.02837 2022 10 27 59879 0.2218 0.2703 -0.02853 2022 10 28 59880 0.2202 0.2691 -0.02856 2022 10 29 59881 0.2186 0.2679 -0.02840 2022 10 30 59882 0.2169 0.2667 -0.02821 2022 10 31 59883 0.2152 0.2656 -0.02806 2022 11 1 59884 0.2135 0.2645 -0.02806 2022 11 2 59885 0.2118 0.2634 -0.02831 2022 11 3 59886 0.2101 0.2623 -0.02880 2022 11 4 59887 0.2083 0.2613 -0.02949 2022 11 5 59888 0.2065 0.2603 -0.03031 2022 11 6 59889 0.2047 0.2594 -0.03117 2022 11 7 59890 0.2029 0.2584 -0.03196 2022 11 8 59891 0.2011 0.2575 -0.03254 2022 11 9 59892 0.1993 0.2566 -0.03286 2022 11 10 59893 0.1974 0.2558 -0.03294 2022 11 11 59894 0.1955 0.2549 -0.03280 2022 11 12 59895 0.1937 0.2541 -0.03252 2022 11 13 59896 0.1918 0.2534 -0.03217 2022 11 14 59897 0.1898 0.2526 -0.03181 2022 11 15 59898 0.1879 0.2519 -0.03148 2022 11 16 59899 0.1860 0.2512 -0.03123 2022 11 17 59900 0.1841 0.2506 -0.03108 2022 11 18 59901 0.1821 0.2500 -0.03113 2022 11 19 59902 0.1801 0.2494 -0.03140 2022 11 20 59903 0.1782 0.2488 -0.03171 2022 11 21 59904 0.1762 0.2483 -0.03202 2022 11 22 59905 0.1742 0.2478 -0.03235 2022 11 23 59906 0.1722 0.2473 -0.03254 2022 11 24 59907 0.1702 0.2469 -0.03252 2022 11 25 59908 0.1682 0.2465 -0.03226 2022 11 26 59909 0.1662 0.2461 -0.03173 2022 11 27 59910 0.1642 0.2458 -0.03113 2022 11 28 59911 0.1621 0.2455 -0.03058 2022 11 29 59912 0.1601 0.2452 -0.03019 2022 11 30 59913 0.1581 0.2450 -0.03005 2022 12 1 59914 0.1560 0.2447 -0.03013 2022 12 2 59915 0.1540 0.2446 -0.03032 2022 12 3 59916 0.1520 0.2444 -0.03069 2022 12 4 59917 0.1499 0.2443 -0.03100 2022 12 5 59918 0.1479 0.2442 -0.03117 2022 12 6 59919 0.1458 0.2442 -0.03112 2022 12 7 59920 0.1438 0.2442 -0.03078 2022 12 8 59921 0.1417 0.2442 -0.03020 2022 12 9 59922 0.1397 0.2442 -0.02949 2022 12 10 59923 0.1377 0.2443 -0.02871 2022 12 11 59924 0.1356 0.2444 -0.02788 2022 12 12 59925 0.1336 0.2445 -0.02709 2022 12 13 59926 0.1316 0.2447 -0.02642 2022 12 14 59927 0.1296 0.2449 -0.02591 2022 12 15 59928 0.1275 0.2451 -0.02561 2022 12 16 59929 0.1255 0.2454 -0.02551 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) 59538 -112.52 0.63 -6.46 0.05 59539 -112.37 0.63 -6.67 0.05 59540 -112.24 0.69 -6.76 0.05 59541 -112.12 0.72 -6.79 0.06 59542 -111.99 0.73 -6.84 0.05 59543 -111.75 0.73 -6.88 0.05 59544 -111.34 0.73 -6.80 0.05 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59538 0.274 0.251 0.032 0.046 59539 0.277 0.251 0.031 0.046 59540 0.282 0.274 0.018 0.052 59541 0.288 0.288 -0.001 0.057 59542 0.297 0.290 -0.023 0.055 59543 0.308 0.290 -0.041 0.055 59544 0.321 0.290 -0.057 0.055 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).