********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 26 December 2019 Vol. XXXII No. 052 ______________________________________________________________________ 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 = -0.2 seconds beginning 02 May 2019 at 0000 UTC Beginning 1 January 2017: TAI-UTC = 37.000 000 seconds *********************************************************************** * * * Notice of Publication Web and FTP Shutdown: * * The US Naval Observatory's Rapid Service/Prediction Center web and * * FTP sites (at maia.usno.navy.mil and toshi.nofs.navy.mil) must * * undergo modernization and have been offline since 24 October 2019. * * The expected completion of work and return of service is estimated * * as 30 April 2020. Please visit https://www.usno.navy.mil and submit * * a Requirements Form to the USNO Public Affairs Official (PAO) if * * the information you are seeking is not accessible via another * * means. If the Requirements Form is not available, please directly * * contact the USNO PAO Geoff Chester at email address * * geoff.chester@navy.mil or phone number 202 762 1438. * * * * Although the Bulletin A makes several references to maia, one * * should note that the paragraph above supercedes any information * * that is contained in the Bulletin A text. Because some users mis- * * takenly use Bulletin A (ser7.dat) instead of other formats (such as * * finals2000A.daily) for operational, machine-to-machine uses, we * * do not wish to change the spacing or text of the files. In the * * past, when spacings had changed, users had stated that any change * * to the Bulletin format outside of this remarks area had broken * * their operations. Therefore, we have not removed the old references * * to maia within the text of the Bulletin A (ser7.dat file). * * * * This shutdown has lead to the indefinite cessation of IERS * * Bulletin A distribution emails. If this occurs, current * * subscribers to the Bulletin A email distribution list may receive * * future mailings from a different address (if this service is * * restored). In the meantime, we will be unable to process email * * subscription/unsubscription requests. * * * * Currently, updated EOPs may be available at NASA's Archive of * * Space Geodesy Data anonymous FTP server at: * * ftp://cddis.gsfc.nasa.gov/pub/products/iers * * Daily EOP data may be uploaded here by 18:00 UTC, and * * Bulletin A EOP data may be available by 20:00 UTC. * * Users should please verify results obtained from this site; * * we cannot guarantee the integrity or timeliness of files provided * * at this mirror site. * * * * For other download options from CDDIS, such as HTTPS, please refer * * to the https://cddis.nasa.gov/About/CDDIS_File_Download_FAQ.html * * * * In addition, updated EOPs may 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 19 12 20 58837 0.09513 .00009 0.27604 .00009 -0.173354 0.000019 19 12 21 58838 0.09474 .00009 0.27648 .00009 -0.174034 0.000012 19 12 22 58839 0.09430 .00009 0.27724 .00009 -0.174716 0.000008 19 12 23 58840 0.09331 .00009 0.27823 .00009 -0.175308 0.000006 19 12 24 58841 0.09184 .00009 0.27900 .00009 -0.175742 0.000006 19 12 25 58842 0.09022 .00009 0.27955 .00009 -0.176012 0.000065 19 12 26 58843 0.08854 .00009 0.28007 .00009 -0.176137 0.000055 _______________________________________________________________________ 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 = 0.1316 - 0.0420 cos A - 0.1007 sin A + 0.0009 cos C + 0.0221 sin C y = 0.3498 - 0.0904 cos A + 0.0407 sin A + 0.0221 cos C - 0.0009 sin C UT1-UTC = -0.1638 - 0.00034 (MJD - 58851) - (UT2-UT1) where A = 2*pi*(MJD-58843)/365.25 and C = 2*pi*(MJD-58843)/435. TAI-UTC(MJD 58844) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58843)**0.80 S t = 0.00025 (MJD-58843)**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) 2019 12 27 58844 0.0869 0.2805 -0.17618 2019 12 28 58845 0.0854 0.2810 -0.17619 2019 12 29 58846 0.0841 0.2815 -0.17621 2019 12 30 58847 0.0828 0.2821 -0.17630 2019 12 31 58848 0.0816 0.2828 -0.17648 2020 1 1 58849 0.0803 0.2836 -0.17677 2020 1 2 58850 0.0789 0.2844 -0.17714 2020 1 3 58851 0.0776 0.2853 -0.17756 2020 1 4 58852 0.0762 0.2861 -0.17801 2020 1 5 58853 0.0749 0.2870 -0.17846 2020 1 6 58854 0.0735 0.2878 -0.17887 2020 1 7 58855 0.0722 0.2886 -0.17920 2020 1 8 58856 0.0710 0.2894 -0.17943 2020 1 9 58857 0.0697 0.2903 -0.17953 2020 1 10 58858 0.0685 0.2912 -0.17952 2020 1 11 58859 0.0673 0.2922 -0.17946 2020 1 12 58860 0.0661 0.2932 -0.17944 2020 1 13 58861 0.0650 0.2942 -0.17956 2020 1 14 58862 0.0638 0.2953 -0.17988 2020 1 15 58863 0.0626 0.2963 -0.18037 2020 1 16 58864 0.0615 0.2974 -0.18099 2020 1 17 58865 0.0604 0.2984 -0.18165 2020 1 18 58866 0.0593 0.2995 -0.18224 2020 1 19 58867 0.0582 0.3006 -0.18270 2020 1 20 58868 0.0572 0.3018 -0.18296 2020 1 21 58869 0.0561 0.3029 -0.18304 2020 1 22 58870 0.0551 0.3041 -0.18294 2020 1 23 58871 0.0542 0.3053 -0.18273 2020 1 24 58872 0.0532 0.3065 -0.18249 2020 1 25 58873 0.0522 0.3077 -0.18227 2020 1 26 58874 0.0513 0.3090 -0.18212 2020 1 27 58875 0.0504 0.3102 -0.18207 2020 1 28 58876 0.0496 0.3115 -0.18215 2020 1 29 58877 0.0487 0.3128 -0.18234 2020 1 30 58878 0.0479 0.3141 -0.18263 2020 1 31 58879 0.0471 0.3154 -0.18296 2020 2 1 58880 0.0464 0.3167 -0.18330 2020 2 2 58881 0.0456 0.3181 -0.18359 2020 2 3 58882 0.0449 0.3194 -0.18381 2020 2 4 58883 0.0442 0.3208 -0.18393 2020 2 5 58884 0.0435 0.3222 -0.18393 2020 2 6 58885 0.0429 0.3236 -0.18386 2020 2 7 58886 0.0423 0.3250 -0.18377 2020 2 8 58887 0.0417 0.3264 -0.18374 2020 2 9 58888 0.0411 0.3278 -0.18388 2020 2 10 58889 0.0406 0.3292 -0.18426 2020 2 11 58890 0.0401 0.3307 -0.18489 2020 2 12 58891 0.0396 0.3321 -0.18571 2020 2 13 58892 0.0392 0.3336 -0.18661 2020 2 14 58893 0.0388 0.3351 -0.18745 2020 2 15 58894 0.0384 0.3365 -0.18812 2020 2 16 58895 0.0380 0.3380 -0.18858 2020 2 17 58896 0.0377 0.3395 -0.18881 2020 2 18 58897 0.0374 0.3410 -0.18884 2020 2 19 58898 0.0371 0.3425 -0.18875 2020 2 20 58899 0.0368 0.3440 -0.18860 2020 2 21 58900 0.0366 0.3455 -0.18847 2020 2 22 58901 0.0364 0.3471 -0.18841 2020 2 23 58902 0.0363 0.3486 -0.18846 2020 2 24 58903 0.0361 0.3501 -0.18861 2020 2 25 58904 0.0360 0.3517 -0.18889 2020 2 26 58905 0.0360 0.3532 -0.18925 2020 2 27 58906 0.0359 0.3547 -0.18967 2020 2 28 58907 0.0359 0.3563 -0.19010 2020 2 29 58908 0.0359 0.3578 -0.19051 2020 3 1 58909 0.0360 0.3593 -0.19086 2020 3 2 58910 0.0360 0.3609 -0.19112 2020 3 3 58911 0.0361 0.3624 -0.19130 2020 3 4 58912 0.0363 0.3640 -0.19141 2020 3 5 58913 0.0364 0.3655 -0.19149 2020 3 6 58914 0.0366 0.3671 -0.19162 2020 3 7 58915 0.0368 0.3686 -0.19189 2020 3 8 58916 0.0371 0.3701 -0.19240 2020 3 9 58917 0.0374 0.3717 -0.19319 2020 3 10 58918 0.0377 0.3732 -0.19424 2020 3 11 58919 0.0380 0.3747 -0.19547 2020 3 12 58920 0.0384 0.3762 -0.19671 2020 3 13 58921 0.0388 0.3777 -0.19785 2020 3 14 58922 0.0392 0.3793 -0.19877 2020 3 15 58923 0.0397 0.3808 -0.19946 2020 3 16 58924 0.0402 0.3823 -0.19993 2020 3 17 58925 0.0407 0.3837 -0.20024 2020 3 18 58926 0.0412 0.3852 -0.20049 2020 3 19 58927 0.0418 0.3867 -0.20074 2020 3 20 58928 0.0424 0.3882 -0.20105 2020 3 21 58929 0.0430 0.3896 -0.20146 2020 3 22 58930 0.0436 0.3911 -0.20199 2020 3 23 58931 0.0443 0.3925 -0.20265 2020 3 24 58932 0.0450 0.3940 -0.20340 2020 3 25 58933 0.0458 0.3954 -0.20422 2020 3 26 58934 0.0465 0.3968 -0.20506 2020 3 27 58935 0.0473 0.3982 -0.20587 2020 3 28 58936 0.0481 0.3996 -0.20661 2020 3 29 58937 0.0490 0.4009 -0.20725 2020 3 30 58938 0.0499 0.4023 -0.20777 2020 3 31 58939 0.0508 0.4037 -0.20819 2020 4 1 58940 0.0517 0.4050 -0.20855 2020 4 2 58941 0.0526 0.4063 -0.20891 2020 4 3 58942 0.0536 0.4076 -0.20935 2020 4 4 58943 0.0546 0.4089 -0.20998 2020 4 5 58944 0.0556 0.4102 -0.21085 2020 4 6 58945 0.0567 0.4115 -0.21201 2020 4 7 58946 0.0578 0.4127 -0.21340 2020 4 8 58947 0.0588 0.4139 -0.21490 2020 4 9 58948 0.0600 0.4151 -0.21636 2020 4 10 58949 0.0611 0.4163 -0.21764 2020 4 11 58950 0.0623 0.4175 -0.21867 2020 4 12 58951 0.0635 0.4187 -0.21944 2020 4 13 58952 0.0647 0.4198 -0.21992 2020 4 14 58953 0.0659 0.4209 -0.22026 2020 4 15 58954 0.0672 0.4221 -0.22056 2020 4 16 58955 0.0684 0.4231 -0.22088 2020 4 17 58956 0.0697 0.4242 -0.22128 2020 4 18 58957 0.0711 0.4253 -0.22177 2020 4 19 58958 0.0724 0.4263 -0.22236 2020 4 20 58959 0.0738 0.4273 -0.22304 2020 4 21 58960 0.0751 0.4283 -0.22378 2020 4 22 58961 0.0765 0.4292 -0.22454 2020 4 23 58962 0.0780 0.4302 -0.22526 2020 4 24 58963 0.0794 0.4311 -0.22591 2020 4 25 58964 0.0808 0.4320 -0.22644 2020 4 26 58965 0.0823 0.4329 -0.22683 2020 4 27 58966 0.0838 0.4337 -0.22710 2020 4 28 58967 0.0853 0.4345 -0.22727 2020 4 29 58968 0.0868 0.4353 -0.22741 2020 4 30 58969 0.0884 0.4361 -0.22757 2020 5 1 58970 0.0899 0.4369 -0.22786 2020 5 2 58971 0.0915 0.4376 -0.22834 2020 5 3 58972 0.0930 0.4383 -0.22907 2020 5 4 58973 0.0946 0.4390 -0.23004 2020 5 5 58974 0.0962 0.4397 -0.23117 2020 5 6 58975 0.0979 0.4403 -0.23233 2020 5 7 58976 0.0995 0.4409 -0.23337 2020 5 8 58977 0.1011 0.4415 -0.23419 2020 5 9 58978 0.1028 0.4421 -0.23473 2020 5 10 58979 0.1045 0.4426 -0.23502 2020 5 11 58980 0.1061 0.4431 -0.23513 2020 5 12 58981 0.1078 0.4436 -0.23515 2020 5 13 58982 0.1095 0.4440 -0.23516 2020 5 14 58983 0.1112 0.4444 -0.23522 2020 5 15 58984 0.1129 0.4448 -0.23536 2020 5 16 58985 0.1147 0.4452 -0.23560 2020 5 17 58986 0.1164 0.4456 -0.23592 2020 5 18 58987 0.1181 0.4459 -0.23630 2020 5 19 58988 0.1199 0.4462 -0.23670 2020 5 20 58989 0.1216 0.4464 -0.23707 2020 5 21 58990 0.1234 0.4467 -0.23736 2020 5 22 58991 0.1251 0.4469 -0.23754 2020 5 23 58992 0.1269 0.4471 -0.23759 2020 5 24 58993 0.1287 0.4472 -0.23749 2020 5 25 58994 0.1304 0.4473 -0.23727 2020 5 26 58995 0.1322 0.4474 -0.23698 2020 5 27 58996 0.1340 0.4475 -0.23669 2020 5 28 58997 0.1358 0.4475 -0.23649 2020 5 29 58998 0.1375 0.4475 -0.23645 2020 5 30 58999 0.1393 0.4475 -0.23662 2020 5 31 59000 0.1411 0.4475 -0.23699 2020 6 1 59001 0.1429 0.4474 -0.23754 2020 6 2 59002 0.1447 0.4473 -0.23816 2020 6 3 59003 0.1464 0.4472 -0.23872 2020 6 4 59004 0.1482 0.4470 -0.23911 2020 6 5 59005 0.1500 0.4468 -0.23926 2020 6 6 59006 0.1517 0.4466 -0.23915 2020 6 7 59007 0.1535 0.4464 -0.23883 2020 6 8 59008 0.1553 0.4461 -0.23838 2020 6 9 59009 0.1570 0.4458 -0.23790 2020 6 10 59010 0.1588 0.4455 -0.23744 2020 6 11 59011 0.1605 0.4451 -0.23707 2020 6 12 59012 0.1623 0.4447 -0.23678 2020 6 13 59013 0.1640 0.4443 -0.23658 2020 6 14 59014 0.1657 0.4439 -0.23645 2020 6 15 59015 0.1674 0.4434 -0.23634 2020 6 16 59016 0.1692 0.4429 -0.23621 2020 6 17 59017 0.1709 0.4424 -0.23601 2020 6 18 59018 0.1725 0.4419 -0.23571 2020 6 19 59019 0.1742 0.4413 -0.23528 2020 6 20 59020 0.1759 0.4407 -0.23469 2020 6 21 59021 0.1776 0.4401 -0.23397 2020 6 22 59022 0.1792 0.4394 -0.23314 2020 6 23 59023 0.1809 0.4387 -0.23229 2020 6 24 59024 0.1825 0.4380 -0.23150 2020 6 25 59025 0.1841 0.4373 -0.23083 2020 6 26 59026 0.1857 0.4365 -0.23033 2020 6 27 59027 0.1873 0.4358 -0.23001 2020 6 28 59028 0.1888 0.4349 -0.22982 2020 6 29 59029 0.1904 0.4341 -0.22969 2020 6 30 59030 0.1919 0.4332 -0.22952 2020 7 1 59031 0.1935 0.4324 -0.22921 2020 7 2 59032 0.1950 0.4314 -0.22869 2020 7 3 59033 0.1965 0.4305 -0.22796 2020 7 4 59034 0.1979 0.4296 -0.22705 2020 7 5 59035 0.1994 0.4286 -0.22604 2020 7 6 59036 0.2008 0.4276 -0.22502 2020 7 7 59037 0.2023 0.4265 -0.22408 2020 7 8 59038 0.2037 0.4255 -0.22326 2020 7 9 59039 0.2050 0.4244 -0.22257 2020 7 10 59040 0.2064 0.4233 -0.22202 2020 7 11 59041 0.2077 0.4222 -0.22159 2020 7 12 59042 0.2091 0.4211 -0.22124 2020 7 13 59043 0.2104 0.4199 -0.22093 2020 7 14 59044 0.2116 0.4187 -0.22063 2020 7 15 59045 0.2129 0.4175 -0.22030 2020 7 16 59046 0.2141 0.4163 -0.21991 2020 7 17 59047 0.2153 0.4150 -0.21944 2020 7 18 59048 0.2165 0.4138 -0.21889 2020 7 19 59049 0.2177 0.4125 -0.21829 2020 7 20 59050 0.2188 0.4112 -0.21770 2020 7 21 59051 0.2200 0.4099 -0.21718 2020 7 22 59052 0.2211 0.4085 -0.21683 2020 7 23 59053 0.2221 0.4072 -0.21668 2020 7 24 59054 0.2232 0.4058 -0.21675 2020 7 25 59055 0.2242 0.4044 -0.21700 2020 7 26 59056 0.2252 0.4030 -0.21735 2020 7 27 59057 0.2261 0.4016 -0.21767 2020 7 28 59058 0.2271 0.4001 -0.21788 2020 7 29 59059 0.2280 0.3987 -0.21790 2020 7 30 59060 0.2289 0.3972 -0.21770 2020 7 31 59061 0.2297 0.3957 -0.21732 2020 8 1 59062 0.2306 0.3942 -0.21683 2020 8 2 59063 0.2314 0.3927 -0.21632 2020 8 3 59064 0.2321 0.3912 -0.21584 2020 8 4 59065 0.2329 0.3897 -0.21543 2020 8 5 59066 0.2336 0.3881 -0.21514 2020 8 6 59067 0.2343 0.3865 -0.21498 2020 8 7 59068 0.2349 0.3850 -0.21491 2020 8 8 59069 0.2356 0.3834 -0.21488 2020 8 9 59070 0.2362 0.3818 -0.21489 2020 8 10 59071 0.2367 0.3802 -0.21487 2020 8 11 59072 0.2373 0.3786 -0.21484 2020 8 12 59073 0.2378 0.3769 -0.21474 2020 8 13 59074 0.2383 0.3753 -0.21456 2020 8 14 59075 0.2387 0.3737 -0.21430 2020 8 15 59076 0.2391 0.3720 -0.21395 2020 8 16 59077 0.2395 0.3704 -0.21355 2020 8 17 59078 0.2399 0.3687 -0.21316 2020 8 18 59079 0.2402 0.3670 -0.21290 2020 8 19 59080 0.2405 0.3653 -0.21289 2020 8 20 59081 0.2408 0.3637 -0.21315 2020 8 21 59082 0.2410 0.3620 -0.21372 2020 8 22 59083 0.2412 0.3603 -0.21447 2020 8 23 59084 0.2414 0.3586 -0.21522 2020 8 24 59085 0.2415 0.3569 -0.21584 2020 8 25 59086 0.2416 0.3552 -0.21622 2020 8 26 59087 0.2417 0.3535 -0.21636 2020 8 27 59088 0.2417 0.3518 -0.21631 2020 8 28 59089 0.2417 0.3501 -0.21611 2020 8 29 59090 0.2417 0.3484 -0.21588 2020 8 30 59091 0.2417 0.3467 -0.21566 2020 8 31 59092 0.2416 0.3450 -0.21549 2020 9 1 59093 0.2415 0.3433 -0.21543 2020 9 2 59094 0.2413 0.3416 -0.21547 2020 9 3 59095 0.2411 0.3399 -0.21561 2020 9 4 59096 0.2409 0.3382 -0.21586 2020 9 5 59097 0.2407 0.3365 -0.21623 2020 9 6 59098 0.2404 0.3348 -0.21665 2020 9 7 59099 0.2401 0.3331 -0.21701 2020 9 8 59100 0.2397 0.3314 -0.21724 2020 9 9 59101 0.2394 0.3297 -0.21734 2020 9 10 59102 0.2390 0.3280 -0.21738 2020 9 11 59103 0.2385 0.3264 -0.21734 2020 9 12 59104 0.2381 0.3247 -0.21719 2020 9 13 59105 0.2376 0.3231 -0.21703 2020 9 14 59106 0.2370 0.3214 -0.21692 2020 9 15 59107 0.2365 0.3198 -0.21697 2020 9 16 59108 0.2359 0.3181 -0.21731 2020 9 17 59109 0.2353 0.3165 -0.21796 2020 9 18 59110 0.2346 0.3149 -0.21884 2020 9 19 59111 0.2339 0.3133 -0.21984 2020 9 20 59112 0.2332 0.3117 -0.22085 2020 9 21 59113 0.2325 0.3101 -0.22170 2020 9 22 59114 0.2317 0.3086 -0.22232 2020 9 23 59115 0.2309 0.3070 -0.22268 2020 9 24 59116 0.2301 0.3055 -0.22288 2020 9 25 59117 0.2292 0.3039 -0.22303 2020 9 26 59118 0.2283 0.3024 -0.22315 2020 9 27 59119 0.2274 0.3009 -0.22340 2020 9 28 59120 0.2264 0.2994 -0.22382 2020 9 29 59121 0.2255 0.2979 -0.22439 2020 9 30 59122 0.2245 0.2965 -0.22507 2020 10 1 59123 0.2234 0.2950 -0.22584 2020 10 2 59124 0.2224 0.2936 -0.22664 2020 10 3 59125 0.2213 0.2922 -0.22750 2020 10 4 59126 0.2202 0.2908 -0.22835 2020 10 5 59127 0.2190 0.2894 -0.22908 2020 10 6 59128 0.2179 0.2880 -0.22970 2020 10 7 59129 0.2167 0.2867 -0.23022 2020 10 8 59130 0.2155 0.2854 -0.23062 2020 10 9 59131 0.2142 0.2841 -0.23094 2020 10 10 59132 0.2130 0.2828 -0.23123 2020 10 11 59133 0.2117 0.2815 -0.23158 2020 10 12 59134 0.2104 0.2803 -0.23206 2020 10 13 59135 0.2090 0.2790 -0.23276 2020 10 14 59136 0.2077 0.2778 -0.23378 2020 10 15 59137 0.2063 0.2766 -0.23508 2020 10 16 59138 0.2049 0.2755 -0.23655 2020 10 17 59139 0.2034 0.2743 -0.23807 2020 10 18 59140 0.2020 0.2732 -0.23943 2020 10 19 59141 0.2005 0.2721 -0.24056 2020 10 20 59142 0.1990 0.2711 -0.24144 2020 10 21 59143 0.1975 0.2700 -0.24206 2020 10 22 59144 0.1960 0.2690 -0.24254 2020 10 23 59145 0.1944 0.2680 -0.24296 2020 10 24 59146 0.1928 0.2670 -0.24336 2020 10 25 59147 0.1913 0.2661 -0.24383 2020 10 26 59148 0.1896 0.2651 -0.24443 2020 10 27 59149 0.1880 0.2642 -0.24517 2020 10 28 59150 0.1864 0.2634 -0.24601 2020 10 29 59151 0.1847 0.2625 -0.24687 2020 10 30 59152 0.1830 0.2617 -0.24772 2020 10 31 59153 0.1813 0.2609 -0.24858 2020 11 1 59154 0.1796 0.2601 -0.24934 2020 11 2 59155 0.1779 0.2594 -0.24999 2020 11 3 59156 0.1762 0.2587 -0.25052 2020 11 4 59157 0.1744 0.2580 -0.25093 2020 11 5 59158 0.1726 0.2573 -0.25128 2020 11 6 59159 0.1709 0.2567 -0.25154 2020 11 7 59160 0.1691 0.2561 -0.25184 2020 11 8 59161 0.1673 0.2555 -0.25226 2020 11 9 59162 0.1655 0.2550 -0.25286 2020 11 10 59163 0.1636 0.2544 -0.25376 2020 11 11 59164 0.1618 0.2540 -0.25493 2020 11 12 59165 0.1599 0.2535 -0.25638 2020 11 13 59166 0.1581 0.2531 -0.25796 2020 11 14 59167 0.1562 0.2527 -0.25953 2020 11 15 59168 0.1544 0.2523 -0.26099 2020 11 16 59169 0.1525 0.2520 -0.26224 2020 11 17 59170 0.1506 0.2516 -0.26324 2020 11 18 59171 0.1487 0.2514 -0.26405 2020 11 19 59172 0.1468 0.2511 -0.26480 2020 11 20 59173 0.1449 0.2509 -0.26558 2020 11 21 59174 0.1430 0.2507 -0.26643 2020 11 22 59175 0.1411 0.2506 -0.26739 2020 11 23 59176 0.1391 0.2504 -0.26844 2020 11 24 59177 0.1372 0.2503 -0.26954 2020 11 25 59178 0.1353 0.2503 -0.27071 2020 11 26 59179 0.1334 0.2502 -0.27189 2020 11 27 59180 0.1315 0.2502 -0.27304 2020 11 28 59181 0.1295 0.2503 -0.27411 2020 11 29 59182 0.1276 0.2503 -0.27510 2020 11 30 59183 0.1257 0.2504 -0.27594 2020 12 1 59184 0.1237 0.2505 -0.27664 2020 12 2 59185 0.1218 0.2507 -0.27715 2020 12 3 59186 0.1199 0.2508 -0.27756 2020 12 4 59187 0.1180 0.2511 -0.27798 2020 12 5 59188 0.1161 0.2513 -0.27848 2020 12 6 59189 0.1141 0.2516 -0.27918 2020 12 7 59190 0.1122 0.2519 -0.28012 2020 12 8 59191 0.1103 0.2522 -0.28129 2020 12 9 59192 0.1084 0.2526 -0.28273 2020 12 10 59193 0.1065 0.2530 -0.28428 2020 12 11 59194 0.1046 0.2534 -0.28582 2020 12 12 59195 0.1028 0.2539 -0.28726 2020 12 13 59196 0.1009 0.2544 -0.28847 2020 12 14 59197 0.0990 0.2549 -0.28939 2020 12 15 59198 0.0972 0.2554 -0.29012 2020 12 16 59199 0.0953 0.2560 -0.29070 2020 12 17 59200 0.0935 0.2566 -0.29121 2020 12 18 59201 0.0917 0.2572 -0.29175 2020 12 19 59202 0.0898 0.2579 -0.29235 2020 12 20 59203 0.0880 0.2586 -0.29304 2020 12 21 59204 0.0863 0.2593 -0.29382 2020 12 22 59205 0.0845 0.2601 -0.29461 2020 12 23 59206 0.0827 0.2609 -0.29539 2020 12 24 59207 0.0810 0.2617 -0.29614 2020 12 25 59208 0.0792 0.2625 -0.29683 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) 58824 -110.46 0.42 -6.81 0.06 58825 -110.51 0.40 -6.50 0.12 58826 -110.60 0.40 -6.13 0.12 58827 -110.74 0.27 -5.93 0.21 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58824 0.166 0.169 0.081 0.060 58825 0.152 0.159 0.097 0.116 58826 0.136 0.159 0.118 0.116 58827 0.119 0.107 0.141 0.213 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).