********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 10 March 2022 Vol. XXXV No. 010 ______________________________________________________________________ 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 *********************************************************************** * ANNOUNCEMENTS: * * * * There will NOT be a leap second introduced * * in UTC at the end of June 2022 * * * * We are pleased to announce the re-opening of the official * * IERS Rapid Service / Prediction Center website at: * * https://maia.usno.navy.mil * * * * Starting Feb 10, 2022, this site will be the primary public source * * for data products published by the IERS Rapid Service / Prediction * * Center, as well as the primary source for announcements and * * information concerning those products. The latest IERS Bulletin A * * can be accessed at https://maia.usno.navy.mil/ser7/ser7.dat * * * * In addition to the overhauled website design, we have also made * * our services more robust and secure: * * * * - We have moved to distributing our products via HTTPS for * * increased data integrity and security of data transmission. * * Please note that unsecured plain HTTP is no longer supported. * * - The website and data are now hosted on an Amazon Web Services * * Cloud environment, improving server up-time and reliability. * * - We have consolidated our publication servers to a single * * instance, removing any confusion over the "best" server to use. * * The former backup site (toshi.nofs.navy.mil) has been retired * * and will not be returning. * * - A new version of the EO Matrix Calculator web application * * with an improved interface is now available at * * https://maia.usno.navy.mil/matrix-calculator * * * * During the outage, we hope you were able to continue receiving * * our products through NASA CDDIS, which graciously provided a * * mirror for our data while our main site was down. While this * * was not ideal for some customers, we thank you for your patience * * and understanding while we made several improvements to * * our website. All data products will continue to be uploaded to * * the CDDIS mirrors at https://cddis.nasa.gov/archive/products/iers/ * * and ftps://gdc.cddis.eosdis.nasa.gov/products/iers/ , so users * * should not expect any of their current links or data retrieval * * scripts to break. However, we encourage users to review * * their options and begin transitioning to https://maia.usno.navy.mil * * as their primary source if it meets their needs, as it will * * receive our publications more promptly and directly, without * * any need to login to the NASA Earthdata system. * * 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. * * * * Questions and enquiries about EOPs can be emailed to the * * following address: * * usn.ncr.navobsydc.mbx.eopcp@mail.mil * * * * 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 3 4 59642 0.02499 .00009 0.37845 .00009 -0.102866 0.000024 22 3 5 59643 0.02667 .00009 0.38055 .00009 -0.103246 0.000038 22 3 6 59644 0.02813 .00009 0.38263 .00009 -0.103560 0.000037 22 3 7 59645 0.02955 .00009 0.38473 .00009 -0.103809 0.000034 22 3 8 59646 0.03099 .00009 0.38669 .00009 -0.103673 0.000033 22 3 9 59647 0.03219 .00009 0.38853 .00009 -0.103369 0.000031 22 3 10 59648 0.03307 .00009 0.39035 .00009 -0.102921 0.000028 _______________________________________________________________________ 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 = 0.1472 - 0.1027 cos A + 0.0063 sin A - 0.0144 cos C + 0.0303 sin C y = 0.3560 + 0.0050 cos A + 0.0937 sin A + 0.0303 cos C + 0.0144 sin C UT1-UTC = -0.0815 + 0.00022 (MJD - 59656) - (UT2-UT1) where A = 2*pi*(MJD-59648)/365.25 and C = 2*pi*(MJD-59648)/435. TAI-UTC(MJD 59649) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59648)**0.80 S t = 0.00025 (MJD-59648)**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 3 11 59649 0.0338 0.3921 -0.10233 2022 3 12 59650 0.0346 0.3937 -0.10166 2022 3 13 59651 0.0353 0.3952 -0.10095 2022 3 14 59652 0.0360 0.3968 -0.10029 2022 3 15 59653 0.0366 0.3983 -0.09974 2022 3 16 59654 0.0374 0.3999 -0.09937 2022 3 17 59655 0.0382 0.4015 -0.09922 2022 3 18 59656 0.0390 0.4031 -0.09930 2022 3 19 59657 0.0397 0.4047 -0.09955 2022 3 20 59658 0.0405 0.4063 -0.09989 2022 3 21 59659 0.0414 0.4079 -0.10022 2022 3 22 59660 0.0422 0.4095 -0.10042 2022 3 23 59661 0.0429 0.4110 -0.10041 2022 3 24 59662 0.0437 0.4125 -0.10019 2022 3 25 59663 0.0445 0.4140 -0.09983 2022 3 26 59664 0.0453 0.4155 -0.09943 2022 3 27 59665 0.0461 0.4170 -0.09909 2022 3 28 59666 0.0469 0.4184 -0.09892 2022 3 29 59667 0.0479 0.4198 -0.09897 2022 3 30 59668 0.0488 0.4212 -0.09926 2022 3 31 59669 0.0498 0.4226 -0.09972 2022 4 1 59670 0.0509 0.4240 -0.10026 2022 4 2 59671 0.0520 0.4254 -0.10078 2022 4 3 59672 0.0531 0.4268 -0.10118 2022 4 4 59673 0.0542 0.4281 -0.10140 2022 4 5 59674 0.0554 0.4294 -0.10140 2022 4 6 59675 0.0566 0.4307 -0.10121 2022 4 7 59676 0.0578 0.4320 -0.10086 2022 4 8 59677 0.0590 0.4333 -0.10040 2022 4 9 59678 0.0603 0.4345 -0.09992 2022 4 10 59679 0.0616 0.4357 -0.09947 2022 4 11 59680 0.0629 0.4369 -0.09914 2022 4 12 59681 0.0643 0.4381 -0.09900 2022 4 13 59682 0.0657 0.4392 -0.09909 2022 4 14 59683 0.0671 0.4404 -0.09943 2022 4 15 59684 0.0685 0.4415 -0.09997 2022 4 16 59685 0.0700 0.4426 -0.10066 2022 4 17 59686 0.0715 0.4436 -0.10135 2022 4 18 59687 0.0730 0.4447 -0.10193 2022 4 19 59688 0.0745 0.4457 -0.10228 2022 4 20 59689 0.0760 0.4467 -0.10239 2022 4 21 59690 0.0776 0.4477 -0.10228 2022 4 22 59691 0.0792 0.4487 -0.10207 2022 4 23 59692 0.0808 0.4496 -0.10187 2022 4 24 59693 0.0824 0.4505 -0.10180 2022 4 25 59694 0.0841 0.4514 -0.10191 2022 4 26 59695 0.0857 0.4523 -0.10222 2022 4 27 59696 0.0874 0.4531 -0.10271 2022 4 28 59697 0.0891 0.4539 -0.10329 2022 4 29 59698 0.0908 0.4547 -0.10387 2022 4 30 59699 0.0925 0.4555 -0.10437 2022 5 1 59700 0.0943 0.4563 -0.10472 2022 5 2 59701 0.0960 0.4570 -0.10487 2022 5 3 59702 0.0978 0.4577 -0.10481 2022 5 4 59703 0.0996 0.4584 -0.10457 2022 5 5 59704 0.1014 0.4590 -0.10418 2022 5 6 59705 0.1032 0.4596 -0.10373 2022 5 7 59706 0.1050 0.4602 -0.10327 2022 5 8 59707 0.1069 0.4608 -0.10289 2022 5 9 59708 0.1087 0.4613 -0.10263 2022 5 10 59709 0.1106 0.4618 -0.10256 2022 5 11 59710 0.1125 0.4623 -0.10269 2022 5 12 59711 0.1144 0.4628 -0.10302 2022 5 13 59712 0.1163 0.4632 -0.10351 2022 5 14 59713 0.1182 0.4636 -0.10405 2022 5 15 59714 0.1201 0.4640 -0.10451 2022 5 16 59715 0.1220 0.4643 -0.10476 2022 5 17 59716 0.1239 0.4646 -0.10473 2022 5 18 59717 0.1259 0.4649 -0.10443 2022 5 19 59718 0.1278 0.4652 -0.10394 2022 5 20 59719 0.1297 0.4654 -0.10340 2022 5 21 59720 0.1317 0.4656 -0.10293 2022 5 22 59721 0.1336 0.4658 -0.10262 2022 5 23 59722 0.1356 0.4659 -0.10248 2022 5 24 59723 0.1376 0.4660 -0.10249 2022 5 25 59724 0.1395 0.4661 -0.10257 2022 5 26 59725 0.1415 0.4662 -0.10265 2022 5 27 59726 0.1435 0.4662 -0.10264 2022 5 28 59727 0.1455 0.4662 -0.10248 2022 5 29 59728 0.1474 0.4662 -0.10211 2022 5 30 59729 0.1494 0.4661 -0.10153 2022 5 31 59730 0.1514 0.4660 -0.10074 2022 6 1 59731 0.1534 0.4659 -0.09979 2022 6 2 59732 0.1553 0.4657 -0.09874 2022 6 3 59733 0.1573 0.4655 -0.09765 2022 6 4 59734 0.1593 0.4653 -0.09660 2022 6 5 59735 0.1613 0.4651 -0.09566 2022 6 6 59736 0.1632 0.4648 -0.09487 2022 6 7 59737 0.1652 0.4645 -0.09427 2022 6 8 59738 0.1671 0.4642 -0.09387 2022 6 9 59739 0.1691 0.4638 -0.09362 2022 6 10 59740 0.1710 0.4634 -0.09346 2022 6 11 59741 0.1730 0.4630 -0.09329 2022 6 12 59742 0.1749 0.4626 -0.09299 2022 6 13 59743 0.1768 0.4621 -0.09245 2022 6 14 59744 0.1787 0.4616 -0.09164 2022 6 15 59745 0.1806 0.4611 -0.09061 2022 6 16 59746 0.1825 0.4605 -0.08948 2022 6 17 59747 0.1844 0.4599 -0.08839 2022 6 18 59748 0.1863 0.4593 -0.08744 2022 6 19 59749 0.1882 0.4586 -0.08670 2022 6 20 59750 0.1900 0.4579 -0.08613 2022 6 21 59751 0.1919 0.4572 -0.08566 2022 6 22 59752 0.1937 0.4565 -0.08519 2022 6 23 59753 0.1955 0.4557 -0.08464 2022 6 24 59754 0.1973 0.4550 -0.08394 2022 6 25 59755 0.1991 0.4541 -0.08305 2022 6 26 59756 0.2009 0.4533 -0.08196 2022 6 27 59757 0.2027 0.4524 -0.08066 2022 6 28 59758 0.2044 0.4515 -0.07920 2022 6 29 59759 0.2062 0.4506 -0.07764 2022 6 30 59760 0.2079 0.4497 -0.07603 2022 7 1 59761 0.2096 0.4487 -0.07446 2022 7 2 59762 0.2113 0.4477 -0.07300 2022 7 3 59763 0.2129 0.4467 -0.07169 2022 7 4 59764 0.2146 0.4456 -0.07056 2022 7 5 59765 0.2162 0.4445 -0.06963 2022 7 6 59766 0.2178 0.4434 -0.06886 2022 7 7 59767 0.2194 0.4423 -0.06821 2022 7 8 59768 0.2210 0.4411 -0.06759 2022 7 9 59769 0.2225 0.4400 -0.06690 2022 7 10 59770 0.2240 0.4388 -0.06605 2022 7 11 59771 0.2255 0.4375 -0.06496 2022 7 12 59772 0.2270 0.4363 -0.06366 2022 7 13 59773 0.2285 0.4350 -0.06224 2022 7 14 59774 0.2299 0.4337 -0.06082 2022 7 15 59775 0.2313 0.4324 -0.05955 2022 7 16 59776 0.2327 0.4311 -0.05851 2022 7 17 59777 0.2341 0.4297 -0.05769 2022 7 18 59778 0.2354 0.4284 -0.05705 2022 7 19 59779 0.2368 0.4270 -0.05645 2022 7 20 59780 0.2380 0.4255 -0.05580 2022 7 21 59781 0.2393 0.4241 -0.05502 2022 7 22 59782 0.2406 0.4226 -0.05405 2022 7 23 59783 0.2418 0.4212 -0.05289 2022 7 24 59784 0.2430 0.4197 -0.05153 2022 7 25 59785 0.2441 0.4182 -0.05003 2022 7 26 59786 0.2452 0.4166 -0.04842 2022 7 27 59787 0.2464 0.4151 -0.04677 2022 7 28 59788 0.2474 0.4135 -0.04516 2022 7 29 59789 0.2485 0.4119 -0.04366 2022 7 30 59790 0.2495 0.4103 -0.04232 2022 7 31 59791 0.2505 0.4087 -0.04117 2022 8 1 59792 0.2514 0.4071 -0.04024 2022 8 2 59793 0.2524 0.4054 -0.03948 2022 8 3 59794 0.2533 0.4038 -0.03886 2022 8 4 59795 0.2541 0.4021 -0.03829 2022 8 5 59796 0.2550 0.4004 -0.03768 2022 8 6 59797 0.2558 0.3987 -0.03694 2022 8 7 59798 0.2566 0.3970 -0.03602 2022 8 8 59799 0.2573 0.3953 -0.03491 2022 8 9 59800 0.2580 0.3935 -0.03366 2022 8 10 59801 0.2587 0.3918 -0.03238 2022 8 11 59802 0.2594 0.3900 -0.03123 2022 8 12 59803 0.2600 0.3882 -0.03030 2022 8 13 59804 0.2606 0.3864 -0.02965 2022 8 14 59805 0.2611 0.3847 -0.02924 2022 8 15 59806 0.2617 0.3829 -0.02896 2022 8 16 59807 0.2621 0.3810 -0.02868 2022 8 17 59808 0.2626 0.3792 -0.02829 2022 8 18 59809 0.2630 0.3774 -0.02773 2022 8 19 59810 0.2634 0.3756 -0.02695 2022 8 20 59811 0.2638 0.3737 -0.02599 2022 8 21 59812 0.2641 0.3719 -0.02485 2022 8 22 59813 0.2644 0.3700 -0.02361 2022 8 23 59814 0.2646 0.3682 -0.02232 2022 8 24 59815 0.2649 0.3663 -0.02105 2022 8 25 59816 0.2651 0.3645 -0.01989 2022 8 26 59817 0.2652 0.3626 -0.01888 2022 8 27 59818 0.2653 0.3607 -0.01808 2022 8 28 59819 0.2654 0.3589 -0.01749 2022 8 29 59820 0.2655 0.3570 -0.01711 2022 8 30 59821 0.2655 0.3551 -0.01687 2022 8 31 59822 0.2655 0.3532 -0.01669 2022 9 1 59823 0.2654 0.3514 -0.01649 2022 9 2 59824 0.2653 0.3495 -0.01616 2022 9 3 59825 0.2652 0.3476 -0.01564 2022 9 4 59826 0.2651 0.3457 -0.01493 2022 9 5 59827 0.2649 0.3439 -0.01406 2022 9 6 59828 0.2647 0.3420 -0.01313 2022 9 7 59829 0.2644 0.3401 -0.01226 2022 9 8 59830 0.2641 0.3383 -0.01157 2022 9 9 59831 0.2638 0.3364 -0.01113 2022 9 10 59832 0.2634 0.3345 -0.01095 2022 9 11 59833 0.2630 0.3327 -0.01094 2022 9 12 59834 0.2626 0.3308 -0.01097 2022 9 13 59835 0.2622 0.3290 -0.01091 2022 9 14 59836 0.2617 0.3272 -0.01066 2022 9 15 59837 0.2611 0.3253 -0.01015 2022 9 16 59838 0.2606 0.3235 -0.00940 2022 9 17 59839 0.2600 0.3217 -0.00844 2022 9 18 59840 0.2594 0.3199 -0.00733 2022 9 19 59841 0.2587 0.3181 -0.00616 2022 9 20 59842 0.2580 0.3163 -0.00501 2022 9 21 59843 0.2573 0.3145 -0.00396 2022 9 22 59844 0.2565 0.3128 -0.00308 2022 9 23 59845 0.2558 0.3110 -0.00242 2022 9 24 59846 0.2549 0.3093 -0.00201 2022 9 25 59847 0.2541 0.3075 -0.00184 2022 9 26 59848 0.2532 0.3058 -0.00186 2022 9 27 59849 0.2523 0.3041 -0.00200 2022 9 28 59850 0.2514 0.3024 -0.00215 2022 9 29 59851 0.2504 0.3007 -0.00221 2022 9 30 59852 0.2494 0.2991 -0.00210 2022 10 1 59853 0.2483 0.2974 -0.00180 2022 10 2 59854 0.2473 0.2958 -0.00133 2022 10 3 59855 0.2462 0.2942 -0.00079 2022 10 4 59856 0.2451 0.2925 -0.00029 2022 10 5 59857 0.2439 0.2910 0.00006 2022 10 6 59858 0.2427 0.2894 0.00019 2022 10 7 59859 0.2415 0.2878 0.00006 2022 10 8 59860 0.2403 0.2863 -0.00027 2022 10 9 59861 0.2390 0.2848 -0.00072 2022 10 10 59862 0.2377 0.2833 -0.00117 2022 10 11 59863 0.2364 0.2818 -0.00150 2022 10 12 59864 0.2351 0.2803 -0.00164 2022 10 13 59865 0.2337 0.2789 -0.00157 2022 10 14 59866 0.2323 0.2775 -0.00129 2022 10 15 59867 0.2309 0.2761 -0.00085 2022 10 16 59868 0.2294 0.2747 -0.00034 2022 10 17 59869 0.2279 0.2733 0.00018 2022 10 18 59870 0.2264 0.2720 0.00061 2022 10 19 59871 0.2249 0.2707 0.00091 2022 10 20 59872 0.2234 0.2694 0.00102 2022 10 21 59873 0.2218 0.2681 0.00097 2022 10 22 59874 0.2202 0.2668 0.00065 2022 10 23 59875 0.2186 0.2656 0.00016 2022 10 24 59876 0.2170 0.2644 -0.00050 2022 10 25 59877 0.2153 0.2632 -0.00127 2022 10 26 59878 0.2136 0.2621 -0.00201 2022 10 27 59879 0.2119 0.2610 -0.00266 2022 10 28 59880 0.2102 0.2599 -0.00318 2022 10 29 59881 0.2085 0.2588 -0.00343 2022 10 30 59882 0.2067 0.2577 -0.00357 2022 10 31 59883 0.2049 0.2567 -0.00369 2022 11 1 59884 0.2031 0.2557 -0.00390 2022 11 2 59885 0.2013 0.2547 -0.00428 2022 11 3 59886 0.1995 0.2538 -0.00487 2022 11 4 59887 0.1976 0.2529 -0.00569 2022 11 5 59888 0.1958 0.2520 -0.00663 2022 11 6 59889 0.1939 0.2511 -0.00761 2022 11 7 59890 0.1920 0.2503 -0.00852 2022 11 8 59891 0.1901 0.2495 -0.00926 2022 11 9 59892 0.1882 0.2487 -0.00985 2022 11 10 59893 0.1863 0.2480 -0.01024 2022 11 11 59894 0.1843 0.2472 -0.01041 2022 11 12 59895 0.1823 0.2466 -0.01045 2022 11 13 59896 0.1804 0.2459 -0.01046 2022 11 14 59897 0.1784 0.2453 -0.01044 2022 11 15 59898 0.1764 0.2447 -0.01041 2022 11 16 59899 0.1744 0.2441 -0.01045 2022 11 17 59900 0.1724 0.2435 -0.01069 2022 11 18 59901 0.1704 0.2430 -0.01108 2022 11 19 59902 0.1683 0.2426 -0.01159 2022 11 20 59903 0.1663 0.2421 -0.01221 2022 11 21 59904 0.1642 0.2417 -0.01285 2022 11 22 59905 0.1622 0.2413 -0.01349 2022 11 23 59906 0.1601 0.2409 -0.01399 2022 11 24 59907 0.1581 0.2406 -0.01427 2022 11 25 59908 0.1560 0.2403 -0.01424 2022 11 26 59909 0.1539 0.2400 -0.01401 2022 11 27 59910 0.1518 0.2398 -0.01369 2022 11 28 59911 0.1498 0.2396 -0.01347 2022 11 29 59912 0.1477 0.2394 -0.01326 2022 11 30 59913 0.1456 0.2393 -0.01329 2022 12 1 59914 0.1435 0.2392 -0.01359 2022 12 2 59915 0.1414 0.2391 -0.01401 2022 12 3 59916 0.1393 0.2390 -0.01445 2022 12 4 59917 0.1372 0.2390 -0.01477 2022 12 5 59918 0.1351 0.2390 -0.01499 2022 12 6 59919 0.1330 0.2391 -0.01492 2022 12 7 59920 0.1310 0.2392 -0.01460 2022 12 8 59921 0.1289 0.2393 -0.01412 2022 12 9 59922 0.1268 0.2394 -0.01356 2022 12 10 59923 0.1247 0.2396 -0.01294 2022 12 11 59924 0.1226 0.2398 -0.01238 2022 12 12 59925 0.1206 0.2400 -0.01195 2022 12 13 59926 0.1185 0.2403 -0.01160 2022 12 14 59927 0.1164 0.2406 -0.01146 2022 12 15 59928 0.1144 0.2409 -0.01153 2022 12 16 59929 0.1123 0.2413 -0.01174 2022 12 17 59930 0.1103 0.2417 -0.01213 2022 12 18 59931 0.1083 0.2421 -0.01258 2022 12 19 59932 0.1063 0.2425 -0.01314 2022 12 20 59933 0.1042 0.2430 -0.01360 2022 12 21 59934 0.1022 0.2435 -0.01386 2022 12 22 59935 0.1003 0.2441 -0.01394 2022 12 23 59936 0.0983 0.2446 -0.01376 2022 12 24 59937 0.0963 0.2452 -0.01350 2022 12 25 59938 0.0943 0.2459 -0.01325 2022 12 26 59939 0.0924 0.2465 -0.01311 2022 12 27 59940 0.0905 0.2472 -0.01326 2022 12 28 59941 0.0886 0.2479 -0.01364 2022 12 29 59942 0.0867 0.2487 -0.01421 2022 12 30 59943 0.0848 0.2494 -0.01486 2022 12 31 59944 0.0829 0.2503 -0.01547 2023 1 1 59945 0.0810 0.2511 -0.01588 2023 1 2 59946 0.0792 0.2519 -0.01607 2023 1 3 59947 0.0774 0.2528 -0.01601 2023 1 4 59948 0.0756 0.2538 -0.01574 2023 1 5 59949 0.0738 0.2547 -0.01533 2023 1 6 59950 0.0720 0.2557 -0.01488 2023 1 7 59951 0.0702 0.2567 -0.01445 2023 1 8 59952 0.0685 0.2577 -0.01407 2023 1 9 59953 0.0668 0.2587 -0.01375 2023 1 10 59954 0.0651 0.2598 -0.01357 2023 1 11 59955 0.0634 0.2609 -0.01357 2023 1 12 59956 0.0618 0.2621 -0.01376 2023 1 13 59957 0.0601 0.2632 -0.01408 2023 1 14 59958 0.0585 0.2644 -0.01466 2023 1 15 59959 0.0569 0.2656 -0.01518 2023 1 16 59960 0.0554 0.2668 -0.01571 2023 1 17 59961 0.0538 0.2681 -0.01606 2023 1 18 59962 0.0523 0.2693 -0.01624 2023 1 19 59963 0.0508 0.2706 -0.01619 2023 1 20 59964 0.0494 0.2719 -0.01593 2023 1 21 59965 0.0479 0.2733 -0.01561 2023 1 22 59966 0.0465 0.2747 -0.01531 2023 1 23 59967 0.0451 0.2760 -0.01533 2023 1 24 59968 0.0438 0.2774 -0.01553 2023 1 25 59969 0.0424 0.2789 -0.01589 2023 1 26 59970 0.0411 0.2803 -0.01635 2023 1 27 59971 0.0398 0.2818 -0.01681 2023 1 28 59972 0.0386 0.2833 -0.01707 2023 1 29 59973 0.0373 0.2848 -0.01706 2023 1 30 59974 0.0361 0.2863 -0.01679 2023 1 31 59975 0.0350 0.2878 -0.01629 2023 2 1 59976 0.0338 0.2894 -0.01567 2023 2 2 59977 0.0327 0.2910 -0.01502 2023 2 3 59978 0.0316 0.2926 -0.01436 2023 2 4 59979 0.0306 0.2942 -0.01376 2023 2 5 59980 0.0295 0.2958 -0.01330 2023 2 6 59981 0.0286 0.2975 -0.01301 2023 2 7 59982 0.0276 0.2991 -0.01293 2023 2 8 59983 0.0267 0.3008 -0.01290 2023 2 9 59984 0.0258 0.3025 -0.01303 2023 2 10 59985 0.0249 0.3042 -0.01333 2023 2 11 59986 0.0241 0.3059 -0.01379 2023 2 12 59987 0.0233 0.3076 -0.01417 2023 2 13 59988 0.0225 0.3094 -0.01446 2023 2 14 59989 0.0217 0.3111 -0.01464 2023 2 15 59990 0.0210 0.3129 -0.01458 2023 2 16 59991 0.0204 0.3147 -0.01437 2023 2 17 59992 0.0197 0.3164 -0.01407 2023 2 18 59993 0.0191 0.3182 -0.01383 2023 2 19 59994 0.0185 0.3200 -0.01375 2023 2 20 59995 0.0180 0.3219 -0.01396 2023 2 21 59996 0.0175 0.3237 -0.01441 2023 2 22 59997 0.0170 0.3255 -0.01512 2023 2 23 59998 0.0166 0.3273 -0.01586 2023 2 24 59999 0.0162 0.3292 -0.01650 2023 2 25 60000 0.0158 0.3310 -0.01697 2023 2 26 60001 0.0154 0.3329 -0.01716 2023 2 27 60002 0.0151 0.3348 -0.01718 2023 2 28 60003 0.0149 0.3366 -0.01695 2023 3 1 60004 0.0146 0.3385 -0.01648 2023 3 2 60005 0.0144 0.3404 -0.01593 2023 3 3 60006 0.0143 0.3423 -0.01537 2023 3 4 60007 0.0141 0.3441 -0.01486 2023 3 5 60008 0.0140 0.3460 -0.01444 2023 3 6 60009 0.0140 0.3479 -0.01416 2023 3 7 60010 0.0140 0.3498 -0.01407 2023 3 8 60011 0.0140 0.3517 -0.01417 2023 3 9 60012 0.0140 0.3536 -0.01436 2023 3 10 60013 0.0141 0.3554 -0.01466 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) 59626 -108.55 0.57 -6.77 0.22 59627 -108.33 0.57 -6.66 0.22 59628 -108.17 0.57 -6.62 0.22 59629 -108.16 0.55 -6.67 0.28 59630 -108.30 0.54 -6.75 0.26 59631 -108.53 0.54 -6.77 0.26 59632 -108.80 0.44 -6.73 0.10 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59626 0.235 0.228 -0.173 0.218 59627 0.239 0.228 -0.209 0.218 59628 0.240 0.228 -0.235 0.218 59629 0.236 0.219 -0.246 0.276 59630 0.226 0.217 -0.243 0.263 59631 0.212 0.217 -0.230 0.263 59632 0.197 0.177 -0.212 0.098 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).