********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 27 February 2020 Vol. XXXIII No. 009 ______________________________________________________________________ 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 20 2 21 58900 0.02850 .00009 0.33994 .00009 -0.199264 0.000014 20 2 22 58901 0.02753 .00009 0.34077 .00009 -0.199523 0.000016 20 2 23 58902 0.02703 .00009 0.34161 .00009 -0.199970 0.000022 20 2 24 58903 0.02705 .00009 0.34282 .00009 -0.200563 0.000023 20 2 25 58904 0.02740 .00009 0.34459 .00009 -0.201230 0.000024 20 2 26 58905 0.02790 .00009 0.34667 .00009 -0.201916 0.000023 20 2 27 58906 0.02844 .00009 0.34886 .00009 -0.202635 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 = 0.1173 - 0.0948 cos A - 0.0135 sin A + 0.0030 cos C + 0.0084 sin C y = 0.3521 - 0.0120 cos A + 0.0846 sin A + 0.0084 cos C - 0.0030 sin C UT1-UTC = -0.2005 - 0.00022 (MJD - 58914) - (UT2-UT1) where A = 2*pi*(MJD-58906)/365.25 and C = 2*pi*(MJD-58906)/435. TAI-UTC(MJD 58907) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58906)**0.80 S t = 0.00025 (MJD-58906)**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) 2020 2 28 58907 0.0287 0.3510 -0.20342 2020 2 29 58908 0.0287 0.3530 -0.20420 2020 3 1 58909 0.0286 0.3548 -0.20492 2020 3 2 58910 0.0286 0.3564 -0.20555 2020 3 3 58911 0.0287 0.3580 -0.20609 2020 3 4 58912 0.0289 0.3597 -0.20657 2020 3 5 58913 0.0292 0.3613 -0.20703 2020 3 6 58914 0.0295 0.3630 -0.20753 2020 3 7 58915 0.0298 0.3647 -0.20817 2020 3 8 58916 0.0300 0.3665 -0.20901 2020 3 9 58917 0.0303 0.3682 -0.21011 2020 3 10 58918 0.0305 0.3699 -0.21146 2020 3 11 58919 0.0308 0.3715 -0.21293 2020 3 12 58920 0.0311 0.3731 -0.21443 2020 3 13 58921 0.0315 0.3747 -0.21582 2020 3 14 58922 0.0318 0.3762 -0.21697 2020 3 15 58923 0.0323 0.3777 -0.21782 2020 3 16 58924 0.0328 0.3792 -0.21842 2020 3 17 58925 0.0333 0.3808 -0.21883 2020 3 18 58926 0.0339 0.3823 -0.21915 2020 3 19 58927 0.0344 0.3838 -0.21946 2020 3 20 58928 0.0350 0.3853 -0.21983 2020 3 21 58929 0.0357 0.3868 -0.22029 2020 3 22 58930 0.0363 0.3883 -0.22088 2020 3 23 58931 0.0370 0.3897 -0.22159 2020 3 24 58932 0.0377 0.3912 -0.22243 2020 3 25 58933 0.0385 0.3926 -0.22335 2020 3 26 58934 0.0393 0.3940 -0.22433 2020 3 27 58935 0.0401 0.3954 -0.22530 2020 3 28 58936 0.0410 0.3968 -0.22623 2020 3 29 58937 0.0418 0.3982 -0.22707 2020 3 30 58938 0.0427 0.3996 -0.22783 2020 3 31 58939 0.0437 0.4010 -0.22849 2020 4 1 58940 0.0446 0.4024 -0.22907 2020 4 2 58941 0.0456 0.4037 -0.22963 2020 4 3 58942 0.0466 0.4050 -0.23025 2020 4 4 58943 0.0476 0.4063 -0.23102 2020 4 5 58944 0.0487 0.4076 -0.23202 2020 4 6 58945 0.0498 0.4089 -0.23329 2020 4 7 58946 0.0509 0.4102 -0.23479 2020 4 8 58947 0.0521 0.4114 -0.23639 2020 4 9 58948 0.0532 0.4127 -0.23794 2020 4 10 58949 0.0544 0.4139 -0.23931 2020 4 11 58950 0.0556 0.4151 -0.24042 2020 4 12 58951 0.0569 0.4163 -0.24126 2020 4 13 58952 0.0581 0.4174 -0.24188 2020 4 14 58953 0.0594 0.4186 -0.24236 2020 4 15 58954 0.0607 0.4197 -0.24277 2020 4 16 58955 0.0620 0.4208 -0.24319 2020 4 17 58956 0.0634 0.4219 -0.24366 2020 4 18 58957 0.0648 0.4229 -0.24422 2020 4 19 58958 0.0661 0.4240 -0.24487 2020 4 20 58959 0.0676 0.4250 -0.24559 2020 4 21 58960 0.0690 0.4260 -0.24637 2020 4 22 58961 0.0704 0.4270 -0.24716 2020 4 23 58962 0.0719 0.4279 -0.24791 2020 4 24 58963 0.0734 0.4289 -0.24857 2020 4 25 58964 0.0749 0.4298 -0.24911 2020 4 26 58965 0.0765 0.4307 -0.24951 2020 4 27 58966 0.0780 0.4315 -0.24977 2020 4 28 58967 0.0796 0.4324 -0.24993 2020 4 29 58968 0.0812 0.4332 -0.25004 2020 4 30 58969 0.0828 0.4340 -0.25017 2020 5 1 58970 0.0844 0.4348 -0.25041 2020 5 2 58971 0.0860 0.4355 -0.25085 2020 5 3 58972 0.0876 0.4362 -0.25153 2020 5 4 58973 0.0893 0.4369 -0.25245 2020 5 5 58974 0.0910 0.4376 -0.25353 2020 5 6 58975 0.0927 0.4382 -0.25462 2020 5 7 58976 0.0944 0.4388 -0.25560 2020 5 8 58977 0.0961 0.4394 -0.25633 2020 5 9 58978 0.0978 0.4400 -0.25679 2020 5 10 58979 0.0995 0.4405 -0.25697 2020 5 11 58980 0.1013 0.4410 -0.25697 2020 5 12 58981 0.1030 0.4415 -0.25687 2020 5 13 58982 0.1048 0.4420 -0.25675 2020 5 14 58983 0.1066 0.4424 -0.25668 2020 5 15 58984 0.1084 0.4428 -0.25669 2020 5 16 58985 0.1102 0.4432 -0.25678 2020 5 17 58986 0.1120 0.4435 -0.25696 2020 5 18 58987 0.1138 0.4439 -0.25718 2020 5 19 58988 0.1156 0.4441 -0.25740 2020 5 20 58989 0.1174 0.4444 -0.25759 2020 5 21 58990 0.1192 0.4446 -0.25769 2020 5 22 58991 0.1211 0.4449 -0.25767 2020 5 23 58992 0.1229 0.4450 -0.25749 2020 5 24 58993 0.1248 0.4452 -0.25716 2020 5 25 58994 0.1266 0.4453 -0.25671 2020 5 26 58995 0.1285 0.4454 -0.25618 2020 5 27 58996 0.1303 0.4455 -0.25565 2020 5 28 58997 0.1322 0.4455 -0.25519 2020 5 29 58998 0.1340 0.4455 -0.25488 2020 5 30 58999 0.1359 0.4455 -0.25478 2020 5 31 59000 0.1377 0.4454 -0.25488 2020 6 1 59001 0.1396 0.4454 -0.25515 2020 6 2 59002 0.1414 0.4453 -0.25550 2020 6 3 59003 0.1433 0.4451 -0.25579 2020 6 4 59004 0.1451 0.4450 -0.25591 2020 6 5 59005 0.1470 0.4448 -0.25579 2020 6 6 59006 0.1488 0.4446 -0.25542 2020 6 7 59007 0.1506 0.4443 -0.25485 2020 6 8 59008 0.1525 0.4440 -0.25415 2020 6 9 59009 0.1543 0.4437 -0.25343 2020 6 10 59010 0.1561 0.4434 -0.25274 2020 6 11 59011 0.1579 0.4430 -0.25213 2020 6 12 59012 0.1597 0.4426 -0.25162 2020 6 13 59013 0.1615 0.4422 -0.25121 2020 6 14 59014 0.1633 0.4418 -0.25086 2020 6 15 59015 0.1651 0.4413 -0.25060 2020 6 16 59016 0.1669 0.4408 -0.25033 2020 6 17 59017 0.1687 0.4402 -0.24999 2020 6 18 59018 0.1704 0.4397 -0.24955 2020 6 19 59019 0.1722 0.4391 -0.24898 2020 6 20 59020 0.1739 0.4385 -0.24828 2020 6 21 59021 0.1756 0.4378 -0.24744 2020 6 22 59022 0.1773 0.4372 -0.24652 2020 6 23 59023 0.1790 0.4365 -0.24559 2020 6 24 59024 0.1807 0.4358 -0.24474 2020 6 25 59025 0.1824 0.4350 -0.24403 2020 6 26 59026 0.1841 0.4342 -0.24352 2020 6 27 59027 0.1857 0.4334 -0.24321 2020 6 28 59028 0.1873 0.4326 -0.24307 2020 6 29 59029 0.1890 0.4318 -0.24302 2020 6 30 59030 0.1905 0.4309 -0.24294 2020 7 1 59031 0.1921 0.4300 -0.24274 2020 7 2 59032 0.1937 0.4291 -0.24234 2020 7 3 59033 0.1952 0.4281 -0.24171 2020 7 4 59034 0.1968 0.4271 -0.24087 2020 7 5 59035 0.1983 0.4261 -0.23990 2020 7 6 59036 0.1998 0.4251 -0.23888 2020 7 7 59037 0.2012 0.4241 -0.23789 2020 7 8 59038 0.2027 0.4230 -0.23699 2020 7 9 59039 0.2041 0.4219 -0.23619 2020 7 10 59040 0.2055 0.4208 -0.23550 2020 7 11 59041 0.2069 0.4197 -0.23490 2020 7 12 59042 0.2083 0.4185 -0.23435 2020 7 13 59043 0.2096 0.4173 -0.23381 2020 7 14 59044 0.2109 0.4161 -0.23323 2020 7 15 59045 0.2122 0.4149 -0.23258 2020 7 16 59046 0.2135 0.4137 -0.23182 2020 7 17 59047 0.2148 0.4124 -0.23094 2020 7 18 59048 0.2160 0.4111 -0.22994 2020 7 19 59049 0.2172 0.4098 -0.22886 2020 7 20 59050 0.2184 0.4085 -0.22776 2020 7 21 59051 0.2195 0.4071 -0.22672 2020 7 22 59052 0.2207 0.4058 -0.22584 2020 7 23 59053 0.2218 0.4044 -0.22517 2020 7 24 59054 0.2228 0.4030 -0.22473 2020 7 25 59055 0.2239 0.4016 -0.22449 2020 7 26 59056 0.2249 0.4002 -0.22435 2020 7 27 59057 0.2259 0.3987 -0.22420 2020 7 28 59058 0.2268 0.3973 -0.22395 2020 7 29 59059 0.2278 0.3958 -0.22351 2020 7 30 59060 0.2287 0.3943 -0.22285 2020 7 31 59061 0.2296 0.3928 -0.22201 2020 8 1 59062 0.2304 0.3913 -0.22102 2020 8 2 59063 0.2312 0.3898 -0.21998 2020 8 3 59064 0.2320 0.3882 -0.21897 2020 8 4 59065 0.2328 0.3867 -0.21805 2020 8 5 59066 0.2335 0.3851 -0.21725 2020 8 6 59067 0.2342 0.3835 -0.21659 2020 8 7 59068 0.2349 0.3819 -0.21604 2020 8 8 59069 0.2355 0.3803 -0.21556 2020 8 9 59070 0.2362 0.3787 -0.21513 2020 8 10 59071 0.2367 0.3771 -0.21468 2020 8 11 59072 0.2373 0.3754 -0.21418 2020 8 12 59073 0.2378 0.3738 -0.21360 2020 8 13 59074 0.2383 0.3721 -0.21291 2020 8 14 59075 0.2387 0.3705 -0.21212 2020 8 15 59076 0.2392 0.3688 -0.21125 2020 8 16 59077 0.2395 0.3671 -0.21036 2020 8 17 59078 0.2399 0.3655 -0.20950 2020 8 18 59079 0.2402 0.3638 -0.20879 2020 8 19 59080 0.2405 0.3621 -0.20830 2020 8 20 59081 0.2408 0.3604 -0.20807 2020 8 21 59082 0.2410 0.3587 -0.20808 2020 8 22 59083 0.2412 0.3570 -0.20824 2020 8 23 59084 0.2413 0.3553 -0.20843 2020 8 24 59085 0.2415 0.3535 -0.20850 2020 8 25 59086 0.2416 0.3518 -0.20837 2020 8 26 59087 0.2416 0.3501 -0.20798 2020 8 27 59088 0.2417 0.3484 -0.20734 2020 8 28 59089 0.2416 0.3467 -0.20652 2020 8 29 59090 0.2416 0.3450 -0.20559 2020 8 30 59091 0.2415 0.3432 -0.20461 2020 8 31 59092 0.2414 0.3415 -0.20365 2020 9 1 59093 0.2413 0.3398 -0.20275 2020 9 2 59094 0.2411 0.3381 -0.20192 2020 9 3 59095 0.2409 0.3364 -0.20116 2020 9 4 59096 0.2407 0.3347 -0.20045 2020 9 5 59097 0.2404 0.3329 -0.19979 2020 9 6 59098 0.2401 0.3312 -0.19915 2020 9 7 59099 0.2398 0.3295 -0.19851 2020 9 8 59100 0.2394 0.3278 -0.19784 2020 9 9 59101 0.2390 0.3262 -0.19715 2020 9 10 59102 0.2386 0.3245 -0.19645 2020 9 11 59103 0.2381 0.3228 -0.19574 2020 9 12 59104 0.2376 0.3211 -0.19509 2020 9 13 59105 0.2371 0.3195 -0.19454 2020 9 14 59106 0.2365 0.3178 -0.19418 2020 9 15 59107 0.2359 0.3161 -0.19409 2020 9 16 59108 0.2353 0.3145 -0.19433 2020 9 17 59109 0.2346 0.3129 -0.19490 2020 9 18 59110 0.2339 0.3113 -0.19572 2020 9 19 59111 0.2332 0.3096 -0.19667 2020 9 20 59112 0.2324 0.3080 -0.19759 2020 9 21 59113 0.2316 0.3064 -0.19834 2020 9 22 59114 0.2308 0.3049 -0.19885 2020 9 23 59115 0.2300 0.3033 -0.19911 2020 9 24 59116 0.2291 0.3018 -0.19919 2020 9 25 59117 0.2282 0.3002 -0.19916 2020 9 26 59118 0.2272 0.2987 -0.19915 2020 9 27 59119 0.2263 0.2972 -0.19922 2020 9 28 59120 0.2253 0.2957 -0.19942 2020 9 29 59121 0.2243 0.2942 -0.19975 2020 9 30 59122 0.2232 0.2927 -0.20023 2020 10 1 59123 0.2221 0.2913 -0.20084 2020 10 2 59124 0.2210 0.2898 -0.20153 2020 10 3 59125 0.2199 0.2884 -0.20228 2020 10 4 59126 0.2187 0.2870 -0.20303 2020 10 5 59127 0.2175 0.2856 -0.20371 2020 10 6 59128 0.2163 0.2843 -0.20427 2020 10 7 59129 0.2150 0.2829 -0.20469 2020 10 8 59130 0.2138 0.2816 -0.20497 2020 10 9 59131 0.2125 0.2803 -0.20518 2020 10 10 59132 0.2111 0.2790 -0.20537 2020 10 11 59133 0.2098 0.2777 -0.20562 2020 10 12 59134 0.2084 0.2765 -0.20603 2020 10 13 59135 0.2070 0.2753 -0.20666 2020 10 14 59136 0.2056 0.2741 -0.20761 2020 10 15 59137 0.2041 0.2729 -0.20884 2020 10 16 59138 0.2027 0.2717 -0.21019 2020 10 17 59139 0.2012 0.2706 -0.21156 2020 10 18 59140 0.1997 0.2694 -0.21285 2020 10 19 59141 0.1981 0.2684 -0.21390 2020 10 20 59142 0.1966 0.2673 -0.21461 2020 10 21 59143 0.1950 0.2662 -0.21512 2020 10 22 59144 0.1934 0.2652 -0.21556 2020 10 23 59145 0.1918 0.2642 -0.21590 2020 10 24 59146 0.1901 0.2632 -0.21626 2020 10 25 59147 0.1885 0.2623 -0.21667 2020 10 26 59148 0.1868 0.2614 -0.21718 2020 10 27 59149 0.1851 0.2605 -0.21775 2020 10 28 59150 0.1834 0.2596 -0.21843 2020 10 29 59151 0.1817 0.2588 -0.21922 2020 10 30 59152 0.1799 0.2579 -0.22007 2020 10 31 59153 0.1782 0.2572 -0.22092 2020 11 1 59154 0.1764 0.2564 -0.22170 2020 11 2 59155 0.1746 0.2557 -0.22235 2020 11 3 59156 0.1728 0.2549 -0.22284 2020 11 4 59157 0.1710 0.2543 -0.22320 2020 11 5 59158 0.1691 0.2536 -0.22352 2020 11 6 59159 0.1673 0.2530 -0.22375 2020 11 7 59160 0.1654 0.2524 -0.22399 2020 11 8 59161 0.1635 0.2518 -0.22436 2020 11 9 59162 0.1617 0.2513 -0.22499 2020 11 10 59163 0.1598 0.2508 -0.22593 2020 11 11 59164 0.1579 0.2503 -0.22714 2020 11 12 59165 0.1559 0.2498 -0.22858 2020 11 13 59166 0.1540 0.2494 -0.23014 2020 11 14 59167 0.1521 0.2490 -0.23164 2020 11 15 59168 0.1501 0.2487 -0.23302 2020 11 16 59169 0.1482 0.2483 -0.23416 2020 11 17 59170 0.1462 0.2480 -0.23508 2020 11 18 59171 0.1443 0.2478 -0.23585 2020 11 19 59172 0.1423 0.2475 -0.23650 2020 11 20 59173 0.1403 0.2473 -0.23719 2020 11 21 59174 0.1384 0.2471 -0.23795 2020 11 22 59175 0.1364 0.2470 -0.23879 2020 11 23 59176 0.1344 0.2469 -0.23972 2020 11 24 59177 0.1324 0.2468 -0.24073 2020 11 25 59178 0.1304 0.2467 -0.24175 2020 11 26 59179 0.1284 0.2467 -0.24277 2020 11 27 59180 0.1264 0.2467 -0.24380 2020 11 28 59181 0.1245 0.2467 -0.24474 2020 11 29 59182 0.1225 0.2468 -0.24553 2020 11 30 59183 0.1205 0.2469 -0.24618 2020 12 1 59184 0.1185 0.2470 -0.24668 2020 12 2 59185 0.1165 0.2472 -0.24704 2020 12 3 59186 0.1145 0.2474 -0.24731 2020 12 4 59187 0.1125 0.2476 -0.24761 2020 12 5 59188 0.1105 0.2478 -0.24802 2020 12 6 59189 0.1086 0.2481 -0.24861 2020 12 7 59190 0.1066 0.2484 -0.24941 2020 12 8 59191 0.1046 0.2488 -0.25040 2020 12 9 59192 0.1027 0.2492 -0.25159 2020 12 10 59193 0.1007 0.2496 -0.25296 2020 12 11 59194 0.0988 0.2500 -0.25430 2020 12 12 59195 0.0969 0.2505 -0.25553 2020 12 13 59196 0.0949 0.2510 -0.25655 2020 12 14 59197 0.0930 0.2515 -0.25730 2020 12 15 59198 0.0911 0.2521 -0.25785 2020 12 16 59199 0.0892 0.2526 -0.25828 2020 12 17 59200 0.0873 0.2533 -0.25868 2020 12 18 59201 0.0854 0.2539 -0.25916 2020 12 19 59202 0.0836 0.2546 -0.25974 2020 12 20 59203 0.0817 0.2553 -0.26040 2020 12 21 59204 0.0799 0.2560 -0.26113 2020 12 22 59205 0.0781 0.2568 -0.26192 2020 12 23 59206 0.0762 0.2576 -0.26276 2020 12 24 59207 0.0744 0.2584 -0.26357 2020 12 25 59208 0.0727 0.2592 -0.26438 2020 12 26 59209 0.0709 0.2601 -0.26510 2020 12 27 59210 0.0691 0.2610 -0.26565 2020 12 28 59211 0.0674 0.2620 -0.26603 2020 12 29 59212 0.0657 0.2629 -0.26622 2020 12 30 59213 0.0640 0.2639 -0.26631 2020 12 31 59214 0.0623 0.2649 -0.26640 2021 1 1 59215 0.0606 0.2660 -0.26655 2021 1 2 59216 0.0590 0.2670 -0.26686 2021 1 3 59217 0.0574 0.2681 -0.26736 2021 1 4 59218 0.0558 0.2692 -0.26805 2021 1 5 59219 0.0542 0.2704 -0.26892 2021 1 6 59220 0.0526 0.2715 -0.26990 2021 1 7 59221 0.0511 0.2727 -0.27089 2021 1 8 59222 0.0496 0.2739 -0.27183 2021 1 9 59223 0.0481 0.2752 -0.27268 2021 1 10 59224 0.0466 0.2765 -0.27335 2021 1 11 59225 0.0452 0.2777 -0.27377 2021 1 12 59226 0.0437 0.2791 -0.27399 2021 1 13 59227 0.0424 0.2804 -0.27412 2021 1 14 59228 0.0410 0.2817 -0.27433 2021 1 15 59229 0.0396 0.2831 -0.27464 2021 1 16 59230 0.0383 0.2845 -0.27504 2021 1 17 59231 0.0370 0.2859 -0.27553 2021 1 18 59232 0.0357 0.2874 -0.27605 2021 1 19 59233 0.0345 0.2888 -0.27658 2021 1 20 59234 0.0333 0.2903 -0.27711 2021 1 21 59235 0.0321 0.2918 -0.27762 2021 1 22 59236 0.0309 0.2933 -0.27803 2021 1 23 59237 0.0298 0.2949 -0.27831 2021 1 24 59238 0.0287 0.2964 -0.27852 2021 1 25 59239 0.0276 0.2980 -0.27862 2021 1 26 59240 0.0266 0.2996 -0.27864 2021 1 27 59241 0.0256 0.3012 -0.27862 2021 1 28 59242 0.0246 0.3029 -0.27869 2021 1 29 59243 0.0236 0.3045 -0.27893 2021 1 30 59244 0.0227 0.3062 -0.27935 2021 1 31 59245 0.0218 0.3078 -0.28009 2021 2 1 59246 0.0210 0.3095 -0.28110 2021 2 2 59247 0.0201 0.3112 -0.28229 2021 2 3 59248 0.0193 0.3129 -0.28352 2021 2 4 59249 0.0186 0.3147 -0.28468 2021 2 5 59250 0.0179 0.3164 -0.28566 2021 2 6 59251 0.0172 0.3182 -0.28647 2021 2 7 59252 0.0165 0.3199 -0.28709 2021 2 8 59253 0.0159 0.3217 -0.28751 2021 2 9 59254 0.0153 0.3235 -0.28785 2021 2 10 59255 0.0147 0.3253 -0.28822 2021 2 11 59256 0.0142 0.3271 -0.28869 2021 2 12 59257 0.0137 0.3289 -0.28929 2021 2 13 59258 0.0132 0.3307 -0.29002 2021 2 14 59259 0.0128 0.3326 -0.29088 2021 2 15 59260 0.0124 0.3344 -0.29179 2021 2 16 59261 0.0120 0.3363 -0.29272 2021 2 17 59262 0.0117 0.3381 -0.29363 2021 2 18 59263 0.0114 0.3400 -0.29447 2021 2 19 59264 0.0112 0.3418 -0.29517 2021 2 20 59265 0.0109 0.3437 -0.29574 2021 2 21 59266 0.0107 0.3456 -0.29615 2021 2 22 59267 0.0106 0.3475 -0.29645 2021 2 23 59268 0.0105 0.3493 -0.29674 2021 2 24 59269 0.0104 0.3512 -0.29704 2021 2 25 59270 0.0104 0.3531 -0.29748 2021 2 26 59271 0.0104 0.3550 -0.29810 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) 58884 -108.29 0.69 -6.53 0.08 58885 -108.56 0.69 -6.68 0.08 58886 -108.90 0.69 -7.08 0.08 58887 -108.95 0.68 -7.55 0.04 58888 -108.43 0.62 -7.75 0.05 58889 -107.59 0.62 -7.58 0.05 58890 -107.04 0.38 -7.25 0.08 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58884 0.302 0.273 0.043 0.078 58885 0.300 0.273 0.034 0.078 58886 0.288 0.273 0.019 0.078 58887 0.268 0.271 0.002 0.038 58888 0.241 0.248 -0.018 0.054 58889 0.209 0.248 -0.040 0.054 58890 0.174 0.150 -0.062 0.080 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).