********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 13 January 2022 Vol. XXXV No. 002 ______________________________________________________________________ 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 June 2022 * * * * 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 22 1 7 59586 0.05179 .00009 0.28695 .00009 -0.110374 0.000017 22 1 8 59587 0.05024 .00009 0.28867 .00009 -0.110772 0.000013 22 1 9 59588 0.04863 .00009 0.29019 .00009 -0.111214 0.000012 22 1 10 59589 0.04712 .00009 0.29146 .00009 -0.111604 0.000020 22 1 11 59590 0.04562 .00009 0.29253 .00009 -0.111840 0.000024 22 1 12 59591 0.04433 .00009 0.29346 .00009 -0.111924 0.000024 22 1 13 59592 0.04341 .00009 0.29443 .00009 -0.111836 0.000024 _______________________________________________________________________ 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 = 0.1348 - 0.0604 cos A - 0.0686 sin A - 0.0306 cos C - 0.0023 sin C y = 0.3569 - 0.0638 cos A + 0.0522 sin A - 0.0023 cos C + 0.0306 sin C UT1-UTC = -0.1206 + 0.00020 (MJD - 59600) - (UT2-UT1) where A = 2*pi*(MJD-59592)/365.25 and C = 2*pi*(MJD-59592)/435. TAI-UTC(MJD 59593) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59592)**0.80 S t = 0.00025 (MJD-59592)**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) 2022 1 14 59593 0.0425 0.2956 -0.11160 2022 1 15 59594 0.0416 0.2968 -0.11120 2022 1 16 59595 0.0406 0.2981 -0.11067 2022 1 17 59596 0.0397 0.2995 -0.11008 2022 1 18 59597 0.0387 0.3009 -0.10952 2022 1 19 59598 0.0377 0.3023 -0.10905 2022 1 20 59599 0.0367 0.3038 -0.10878 2022 1 21 59600 0.0356 0.3053 -0.10873 2022 1 22 59601 0.0345 0.3068 -0.10890 2022 1 23 59602 0.0333 0.3083 -0.10922 2022 1 24 59603 0.0322 0.3098 -0.10966 2022 1 25 59604 0.0311 0.3112 -0.11017 2022 1 26 59605 0.0301 0.3126 -0.11061 2022 1 27 59606 0.0292 0.3140 -0.11091 2022 1 28 59607 0.0284 0.3155 -0.11101 2022 1 29 59608 0.0276 0.3171 -0.11093 2022 1 30 59609 0.0269 0.3187 -0.11073 2022 1 31 59610 0.0262 0.3203 -0.11054 2022 2 1 59611 0.0254 0.3220 -0.11049 2022 2 2 59612 0.0247 0.3237 -0.11065 2022 2 3 59613 0.0240 0.3254 -0.11105 2022 2 4 59614 0.0234 0.3270 -0.11161 2022 2 5 59615 0.0228 0.3287 -0.11226 2022 2 6 59616 0.0222 0.3304 -0.11288 2022 2 7 59617 0.0216 0.3321 -0.11342 2022 2 8 59618 0.0211 0.3338 -0.11380 2022 2 9 59619 0.0206 0.3355 -0.11399 2022 2 10 59620 0.0202 0.3372 -0.11401 2022 2 11 59621 0.0198 0.3390 -0.11387 2022 2 12 59622 0.0195 0.3407 -0.11362 2022 2 13 59623 0.0192 0.3424 -0.11332 2022 2 14 59624 0.0189 0.3442 -0.11303 2022 2 15 59625 0.0187 0.3460 -0.11282 2022 2 16 59626 0.0184 0.3478 -0.11275 2022 2 17 59627 0.0182 0.3495 -0.11289 2022 2 18 59628 0.0181 0.3513 -0.11324 2022 2 19 59629 0.0179 0.3531 -0.11379 2022 2 20 59630 0.0178 0.3549 -0.11446 2022 2 21 59631 0.0177 0.3567 -0.11516 2022 2 22 59632 0.0177 0.3585 -0.11578 2022 2 23 59633 0.0177 0.3602 -0.11622 2022 2 24 59634 0.0177 0.3620 -0.11645 2022 2 25 59635 0.0178 0.3638 -0.11647 2022 2 26 59636 0.0179 0.3656 -0.11635 2022 2 27 59637 0.0180 0.3674 -0.11619 2022 2 28 59638 0.0182 0.3692 -0.11612 2022 3 1 59639 0.0184 0.3710 -0.11623 2022 3 2 59640 0.0186 0.3728 -0.11657 2022 3 3 59641 0.0188 0.3746 -0.11713 2022 3 4 59642 0.0191 0.3764 -0.11781 2022 3 5 59643 0.0194 0.3782 -0.11852 2022 3 6 59644 0.0198 0.3800 -0.11916 2022 3 7 59645 0.0201 0.3818 -0.11965 2022 3 8 59646 0.0206 0.3836 -0.11996 2022 3 9 59647 0.0210 0.3854 -0.12007 2022 3 10 59648 0.0215 0.3871 -0.12001 2022 3 11 59649 0.0220 0.3889 -0.11981 2022 3 12 59650 0.0226 0.3907 -0.11953 2022 3 13 59651 0.0231 0.3924 -0.11925 2022 3 14 59652 0.0237 0.3942 -0.11904 2022 3 15 59653 0.0244 0.3959 -0.11898 2022 3 16 59654 0.0250 0.3976 -0.11911 2022 3 17 59655 0.0257 0.3994 -0.11948 2022 3 18 59656 0.0265 0.4011 -0.12006 2022 3 19 59657 0.0272 0.4028 -0.12082 2022 3 20 59658 0.0280 0.4045 -0.12164 2022 3 21 59659 0.0289 0.4062 -0.12241 2022 3 22 59660 0.0297 0.4079 -0.12302 2022 3 23 59661 0.0306 0.4095 -0.12340 2022 3 24 59662 0.0315 0.4112 -0.12353 2022 3 25 59663 0.0325 0.4128 -0.12349 2022 3 26 59664 0.0335 0.4144 -0.12337 2022 3 27 59665 0.0345 0.4161 -0.12329 2022 3 28 59666 0.0355 0.4177 -0.12335 2022 3 29 59667 0.0366 0.4192 -0.12363 2022 3 30 59668 0.0377 0.4208 -0.12411 2022 3 31 59669 0.0388 0.4224 -0.12476 2022 4 1 59670 0.0400 0.4239 -0.12548 2022 4 2 59671 0.0411 0.4254 -0.12617 2022 4 3 59672 0.0423 0.4269 -0.12675 2022 4 4 59673 0.0436 0.4284 -0.12715 2022 4 5 59674 0.0448 0.4299 -0.12735 2022 4 6 59675 0.0461 0.4314 -0.12734 2022 4 7 59676 0.0474 0.4328 -0.12717 2022 4 8 59677 0.0488 0.4342 -0.12689 2022 4 9 59678 0.0501 0.4356 -0.12657 2022 4 10 59679 0.0515 0.4370 -0.12629 2022 4 11 59680 0.0530 0.4384 -0.12612 2022 4 12 59681 0.0544 0.4397 -0.12612 2022 4 13 59682 0.0559 0.4410 -0.12635 2022 4 14 59683 0.0573 0.4423 -0.12681 2022 4 15 59684 0.0589 0.4436 -0.12749 2022 4 16 59685 0.0604 0.4448 -0.12829 2022 4 17 59686 0.0619 0.4461 -0.12911 2022 4 18 59687 0.0635 0.4473 -0.12979 2022 4 19 59688 0.0651 0.4485 -0.13025 2022 4 20 59689 0.0668 0.4496 -0.13044 2022 4 21 59690 0.0684 0.4508 -0.13042 2022 4 22 59691 0.0701 0.4519 -0.13028 2022 4 23 59692 0.0717 0.4530 -0.13015 2022 4 24 59693 0.0734 0.4541 -0.13012 2022 4 25 59694 0.0752 0.4551 -0.13028 2022 4 26 59695 0.0769 0.4561 -0.13064 2022 4 27 59696 0.0787 0.4571 -0.13115 2022 4 28 59697 0.0804 0.4581 -0.13175 2022 4 29 59698 0.0822 0.4590 -0.13234 2022 4 30 59699 0.0841 0.4599 -0.13283 2022 5 1 59700 0.0859 0.4608 -0.13316 2022 5 2 59701 0.0877 0.4617 -0.13328 2022 5 3 59702 0.0896 0.4625 -0.13320 2022 5 4 59703 0.0915 0.4633 -0.13292 2022 5 5 59704 0.0933 0.4641 -0.13249 2022 5 6 59705 0.0952 0.4649 -0.13199 2022 5 7 59706 0.0972 0.4656 -0.13149 2022 5 8 59707 0.0991 0.4663 -0.13105 2022 5 9 59708 0.1010 0.4669 -0.13074 2022 5 10 59709 0.1030 0.4676 -0.13062 2022 5 11 59710 0.1049 0.4682 -0.13070 2022 5 12 59711 0.1069 0.4688 -0.13099 2022 5 13 59712 0.1089 0.4693 -0.13144 2022 5 14 59713 0.1109 0.4698 -0.13195 2022 5 15 59714 0.1129 0.4703 -0.13237 2022 5 16 59715 0.1149 0.4708 -0.13260 2022 5 17 59716 0.1169 0.4712 -0.13255 2022 5 18 59717 0.1189 0.4716 -0.13224 2022 5 19 59718 0.1210 0.4720 -0.13174 2022 5 20 59719 0.1230 0.4723 -0.13119 2022 5 21 59720 0.1251 0.4726 -0.13072 2022 5 22 59721 0.1271 0.4729 -0.13040 2022 5 23 59722 0.1292 0.4732 -0.13026 2022 5 24 59723 0.1312 0.4734 -0.13027 2022 5 25 59724 0.1333 0.4736 -0.13036 2022 5 26 59725 0.1353 0.4737 -0.13045 2022 5 27 59726 0.1374 0.4738 -0.13044 2022 5 28 59727 0.1395 0.4739 -0.13029 2022 5 29 59728 0.1416 0.4740 -0.12993 2022 5 30 59729 0.1436 0.4740 -0.12937 2022 5 31 59730 0.1457 0.4740 -0.12860 2022 6 1 59731 0.1478 0.4740 -0.12767 2022 6 2 59732 0.1498 0.4739 -0.12664 2022 6 3 59733 0.1519 0.4738 -0.12559 2022 6 4 59734 0.1540 0.4737 -0.12457 2022 6 5 59735 0.1560 0.4736 -0.12366 2022 6 6 59736 0.1581 0.4734 -0.12291 2022 6 7 59737 0.1601 0.4732 -0.12235 2022 6 8 59738 0.1622 0.4729 -0.12199 2022 6 9 59739 0.1642 0.4726 -0.12179 2022 6 10 59740 0.1663 0.4723 -0.12169 2022 6 11 59741 0.1683 0.4720 -0.12158 2022 6 12 59742 0.1703 0.4716 -0.12134 2022 6 13 59743 0.1724 0.4712 -0.12086 2022 6 14 59744 0.1744 0.4707 -0.12012 2022 6 15 59745 0.1764 0.4703 -0.11917 2022 6 16 59746 0.1784 0.4698 -0.11811 2022 6 17 59747 0.1803 0.4693 -0.11710 2022 6 18 59748 0.1823 0.4687 -0.11625 2022 6 19 59749 0.1843 0.4681 -0.11560 2022 6 20 59750 0.1862 0.4675 -0.11512 2022 6 21 59751 0.1882 0.4668 -0.11475 2022 6 22 59752 0.1901 0.4662 -0.11438 2022 6 23 59753 0.1920 0.4655 -0.11393 2022 6 24 59754 0.1939 0.4647 -0.11334 2022 6 25 59755 0.1958 0.4640 -0.11255 2022 6 26 59756 0.1977 0.4632 -0.11157 2022 6 27 59757 0.1995 0.4623 -0.11038 2022 6 28 59758 0.2014 0.4615 -0.10903 2022 6 29 59759 0.2032 0.4606 -0.10758 2022 6 30 59760 0.2050 0.4597 -0.10608 2022 7 1 59761 0.2068 0.4588 -0.10461 2022 7 2 59762 0.2086 0.4578 -0.10324 2022 7 3 59763 0.2104 0.4568 -0.10203 2022 7 4 59764 0.2121 0.4558 -0.10099 2022 7 5 59765 0.2138 0.4548 -0.10014 2022 7 6 59766 0.2155 0.4537 -0.09945 2022 7 7 59767 0.2172 0.4526 -0.09887 2022 7 8 59768 0.2189 0.4515 -0.09832 2022 7 9 59769 0.2205 0.4503 -0.09769 2022 7 10 59770 0.2221 0.4492 -0.09687 2022 7 11 59771 0.2237 0.4480 -0.09582 2022 7 12 59772 0.2253 0.4467 -0.09453 2022 7 13 59773 0.2269 0.4455 -0.09309 2022 7 14 59774 0.2284 0.4442 -0.09165 2022 7 15 59775 0.2299 0.4429 -0.09033 2022 7 16 59776 0.2314 0.4416 -0.08921 2022 7 17 59777 0.2328 0.4403 -0.08830 2022 7 18 59778 0.2343 0.4389 -0.08752 2022 7 19 59779 0.2357 0.4375 -0.08677 2022 7 20 59780 0.2371 0.4361 -0.08595 2022 7 21 59781 0.2384 0.4347 -0.08499 2022 7 22 59782 0.2398 0.4332 -0.08385 2022 7 23 59783 0.2411 0.4317 -0.08256 2022 7 24 59784 0.2424 0.4303 -0.08113 2022 7 25 59785 0.2436 0.4287 -0.07962 2022 7 26 59786 0.2448 0.4272 -0.07809 2022 7 27 59787 0.2460 0.4257 -0.07659 2022 7 28 59788 0.2472 0.4241 -0.07520 2022 7 29 59789 0.2483 0.4225 -0.07397 2022 7 30 59790 0.2494 0.4209 -0.07295 2022 7 31 59791 0.2505 0.4193 -0.07216 2022 8 1 59792 0.2516 0.4176 -0.07157 2022 8 2 59793 0.2526 0.4160 -0.07114 2022 8 3 59794 0.2536 0.4143 -0.07082 2022 8 4 59795 0.2545 0.4126 -0.07050 2022 8 5 59796 0.2555 0.4109 -0.07010 2022 8 6 59797 0.2564 0.4092 -0.06953 2022 8 7 59798 0.2572 0.4075 -0.06871 2022 8 8 59799 0.2581 0.4057 -0.06766 2022 8 9 59800 0.2589 0.4040 -0.06643 2022 8 10 59801 0.2597 0.4022 -0.06515 2022 8 11 59802 0.2604 0.4004 -0.06397 2022 8 12 59803 0.2611 0.3986 -0.06298 2022 8 13 59804 0.2618 0.3968 -0.06226 2022 8 14 59805 0.2624 0.3950 -0.06176 2022 8 15 59806 0.2630 0.3932 -0.06137 2022 8 16 59807 0.2636 0.3913 -0.06097 2022 8 17 59808 0.2642 0.3895 -0.06045 2022 8 18 59809 0.2647 0.3876 -0.05976 2022 8 19 59810 0.2651 0.3857 -0.05891 2022 8 20 59811 0.2656 0.3839 -0.05793 2022 8 21 59812 0.2660 0.3820 -0.05685 2022 8 22 59813 0.2664 0.3801 -0.05571 2022 8 23 59814 0.2667 0.3782 -0.05455 2022 8 24 59815 0.2670 0.3763 -0.05344 2022 8 25 59816 0.2673 0.3744 -0.05245 2022 8 26 59817 0.2675 0.3725 -0.05160 2022 8 27 59818 0.2677 0.3706 -0.05097 2022 8 28 59819 0.2679 0.3687 -0.05054 2022 8 29 59820 0.2680 0.3668 -0.05038 2022 8 30 59821 0.2681 0.3648 -0.05038 2022 8 31 59822 0.2682 0.3629 -0.05041 2022 9 1 59823 0.2682 0.3610 -0.05047 2022 9 2 59824 0.2682 0.3591 -0.05036 2022 9 3 59825 0.2682 0.3571 -0.05011 2022 9 4 59826 0.2681 0.3552 -0.04965 2022 9 5 59827 0.2680 0.3533 -0.04900 2022 9 6 59828 0.2679 0.3514 -0.04833 2022 9 7 59829 0.2677 0.3494 -0.04774 2022 9 8 59830 0.2675 0.3475 -0.04737 2022 9 9 59831 0.2672 0.3456 -0.04731 2022 9 10 59832 0.2670 0.3437 -0.04754 2022 9 11 59833 0.2667 0.3418 -0.04793 2022 9 12 59834 0.2663 0.3399 -0.04838 2022 9 13 59835 0.2659 0.3380 -0.04875 2022 9 14 59836 0.2655 0.3361 -0.04896 2022 9 15 59837 0.2651 0.3342 -0.04898 2022 9 16 59838 0.2646 0.3323 -0.04885 2022 9 17 59839 0.2641 0.3304 -0.04859 2022 9 18 59840 0.2635 0.3285 -0.04819 2022 9 19 59841 0.2629 0.3267 -0.04768 2022 9 20 59842 0.2623 0.3248 -0.04717 2022 9 21 59843 0.2617 0.3230 -0.04673 2022 9 22 59844 0.2610 0.3211 -0.04643 2022 9 23 59845 0.2603 0.3193 -0.04633 2022 9 24 59846 0.2595 0.3175 -0.04659 2022 9 25 59847 0.2588 0.3157 -0.04698 2022 9 26 59848 0.2579 0.3139 -0.04759 2022 9 27 59849 0.2571 0.3121 -0.04826 2022 9 28 59850 0.2562 0.3103 -0.04894 2022 9 29 59851 0.2553 0.3086 -0.04948 2022 9 30 59852 0.2544 0.3069 -0.04977 2022 10 1 59853 0.2534 0.3051 -0.04978 2022 10 2 59854 0.2524 0.3034 -0.04953 2022 10 3 59855 0.2514 0.3017 -0.04923 2022 10 4 59856 0.2503 0.3000 -0.04885 2022 10 5 59857 0.2493 0.2984 -0.04856 2022 10 6 59858 0.2482 0.2967 -0.04849 2022 10 7 59859 0.2470 0.2951 -0.04872 2022 10 8 59860 0.2458 0.2935 -0.04911 2022 10 9 59861 0.2446 0.2919 -0.04958 2022 10 10 59862 0.2434 0.2903 -0.05003 2022 10 11 59863 0.2422 0.2887 -0.05035 2022 10 12 59864 0.2409 0.2872 -0.05053 2022 10 13 59865 0.2396 0.2857 -0.05056 2022 10 14 59866 0.2382 0.2842 -0.05041 2022 10 15 59867 0.2369 0.2827 -0.05010 2022 10 16 59868 0.2355 0.2812 -0.04972 2022 10 17 59869 0.2341 0.2798 -0.04933 2022 10 18 59870 0.2326 0.2783 -0.04900 2022 10 19 59871 0.2312 0.2769 -0.04864 2022 10 20 59872 0.2297 0.2756 -0.04845 2022 10 21 59873 0.2282 0.2742 -0.04851 2022 10 22 59874 0.2266 0.2729 -0.04891 2022 10 23 59875 0.2251 0.2716 -0.04945 2022 10 24 59876 0.2235 0.2703 -0.05015 2022 10 25 59877 0.2219 0.2690 -0.05094 2022 10 26 59878 0.2203 0.2678 -0.05158 2022 10 27 59879 0.2186 0.2666 -0.05206 2022 10 28 59880 0.2170 0.2654 -0.05226 2022 10 29 59881 0.2153 0.2642 -0.05220 2022 10 30 59882 0.2136 0.2631 -0.05194 2022 10 31 59883 0.2119 0.2620 -0.05164 2022 11 1 59884 0.2101 0.2609 -0.05139 2022 11 2 59885 0.2084 0.2599 -0.05139 2022 11 3 59886 0.2066 0.2588 -0.05160 2022 11 4 59887 0.2048 0.2578 -0.05202 2022 11 5 59888 0.2030 0.2569 -0.05262 2022 11 6 59889 0.2012 0.2559 -0.05323 2022 11 7 59890 0.1993 0.2550 -0.05384 2022 11 8 59891 0.1975 0.2541 -0.05422 2022 11 9 59892 0.1956 0.2532 -0.05429 2022 11 10 59893 0.1937 0.2524 -0.05410 2022 11 11 59894 0.1918 0.2516 -0.05370 2022 11 12 59895 0.1899 0.2508 -0.05309 2022 11 13 59896 0.1880 0.2501 -0.05238 2022 11 14 59897 0.1860 0.2494 -0.05161 2022 11 15 59898 0.1841 0.2487 -0.05092 2022 11 16 59899 0.1821 0.2480 -0.05037 2022 11 17 59900 0.1802 0.2474 -0.04995 2022 11 18 59901 0.1782 0.2468 -0.04979 2022 11 19 59902 0.1762 0.2462 -0.04981 2022 11 20 59903 0.1742 0.2457 -0.05002 2022 11 21 59904 0.1722 0.2452 -0.05031 2022 11 22 59905 0.1702 0.2447 -0.05058 2022 11 23 59906 0.1682 0.2443 -0.05069 2022 11 24 59907 0.1661 0.2439 -0.05051 2022 11 25 59908 0.1641 0.2435 -0.05004 2022 11 26 59909 0.1621 0.2432 -0.04941 2022 11 27 59910 0.1600 0.2428 -0.04868 2022 11 28 59911 0.1580 0.2426 -0.04802 2022 11 29 59912 0.1559 0.2423 -0.04762 2022 11 30 59913 0.1539 0.2421 -0.04747 2022 12 1 59914 0.1518 0.2419 -0.04756 2022 12 2 59915 0.1498 0.2417 -0.04776 2022 12 3 59916 0.1477 0.2416 -0.04799 2022 12 4 59917 0.1457 0.2415 -0.04817 2022 12 5 59918 0.1436 0.2415 -0.04821 2022 12 6 59919 0.1416 0.2414 -0.04805 2022 12 7 59920 0.1395 0.2414 -0.04770 2022 12 8 59921 0.1375 0.2415 -0.04714 2022 12 9 59922 0.1354 0.2415 -0.04641 2022 12 10 59923 0.1334 0.2416 -0.04562 2022 12 11 59924 0.1313 0.2418 -0.04482 2022 12 12 59925 0.1293 0.2419 -0.04395 2022 12 13 59926 0.1272 0.2421 -0.04318 2022 12 14 59927 0.1252 0.2423 -0.04255 2022 12 15 59928 0.1232 0.2426 -0.04208 2022 12 16 59929 0.1212 0.2429 -0.04179 2022 12 17 59930 0.1192 0.2432 -0.04164 2022 12 18 59931 0.1172 0.2436 -0.04159 2022 12 19 59932 0.1152 0.2439 -0.04151 2022 12 20 59933 0.1132 0.2444 -0.04142 2022 12 21 59934 0.1112 0.2448 -0.04118 2022 12 22 59935 0.1092 0.2453 -0.04079 2022 12 23 59936 0.1073 0.2458 -0.04030 2022 12 24 59937 0.1053 0.2463 -0.03972 2022 12 25 59938 0.1034 0.2469 -0.03927 2022 12 26 59939 0.1015 0.2475 -0.03906 2022 12 27 59940 0.0995 0.2481 -0.03912 2022 12 28 59941 0.0976 0.2488 -0.03949 2022 12 29 59942 0.0958 0.2495 -0.04002 2022 12 30 59943 0.0939 0.2502 -0.04057 2022 12 31 59944 0.0920 0.2509 -0.04106 2023 1 1 59945 0.0902 0.2517 -0.04140 2023 1 2 59946 0.0884 0.2525 -0.04156 2023 1 3 59947 0.0866 0.2533 -0.04144 2023 1 4 59948 0.0848 0.2542 -0.04108 2023 1 5 59949 0.0830 0.2551 -0.04055 2023 1 6 59950 0.0812 0.2560 -0.03990 2023 1 7 59951 0.0795 0.2570 -0.03921 2023 1 8 59952 0.0778 0.2579 -0.03857 2023 1 9 59953 0.0761 0.2589 -0.03803 2023 1 10 59954 0.0744 0.2600 -0.03760 2023 1 11 59955 0.0727 0.2610 -0.03729 2023 1 12 59956 0.0711 0.2621 -0.03707 2023 1 13 59957 0.0695 0.2632 -0.03701 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) 59572 -109.76 0.70 -5.91 0.06 59573 -109.47 0.55 -5.84 0.03 59574 -109.32 0.58 -5.79 0.11 59575 -109.32 0.87 -5.84 0.31 59576 -109.41 0.87 -5.88 0.31 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59572 0.255 0.278 -0.079 0.055 59573 0.262 0.220 -0.103 0.034 59574 0.274 0.231 -0.139 0.106 59575 0.291 0.347 -0.181 0.311 59576 0.311 0.347 -0.228 0.311 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).