********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 18 February 2021 Vol. XXXIV No. 007 ______________________________________________________________________ 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 *********************************************************************** * * * There will NOT be a leap second introduced * * in UTC at the end of June 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 * * * * 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 2 12 59257 0.05138 .00009 0.35486 .00009 -0.169403 0.000013 21 2 13 59258 0.05156 .00009 0.35574 .00009 -0.169722 0.000017 21 2 14 59259 0.05180 .00009 0.35680 .00009 -0.170165 0.000019 21 2 15 59260 0.05162 .00009 0.35807 .00009 -0.170694 0.000026 21 2 16 59261 0.05098 .00009 0.35927 .00009 -0.171213 0.000025 21 2 17 59262 0.05047 .00009 0.36030 .00009 -0.171633 0.000036 21 2 18 59263 0.05037 .00009 0.36123 .00009 -0.171935 0.000033 _______________________________________________________________________ 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 = 0.1284 - 0.1089 cos A - 0.0006 sin A + 0.0271 cos C + 0.0004 sin C y = 0.3623 - 0.0007 cos A + 0.0997 sin A + 0.0004 cos C - 0.0271 sin C UT1-UTC = -0.1646 + 0.00018 (MJD - 59271) - (UT2-UT1) where A = 2*pi*(MJD-59263)/365.25 and C = 2*pi*(MJD-59263)/435. TAI-UTC(MJD 59264) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-59263)**0.80 S t = 0.00025 (MJD-59263)**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 2 19 59264 0.0504 0.3622 -0.17207 2021 2 20 59265 0.0505 0.3632 -0.17200 2021 2 21 59266 0.0506 0.3643 -0.17172 2021 2 22 59267 0.0508 0.3654 -0.17127 2021 2 23 59268 0.0509 0.3667 -0.17071 2021 2 24 59269 0.0509 0.3680 -0.17013 2021 2 25 59270 0.0509 0.3692 -0.16966 2021 2 26 59271 0.0509 0.3703 -0.16938 2021 2 27 59272 0.0510 0.3715 -0.16935 2021 2 28 59273 0.0511 0.3726 -0.16962 2021 3 1 59274 0.0512 0.3738 -0.17016 2021 3 2 59275 0.0514 0.3750 -0.17089 2021 3 3 59276 0.0515 0.3762 -0.17167 2021 3 4 59277 0.0517 0.3774 -0.17238 2021 3 5 59278 0.0519 0.3786 -0.17292 2021 3 6 59279 0.0521 0.3799 -0.17326 2021 3 7 59280 0.0523 0.3811 -0.17342 2021 3 8 59281 0.0526 0.3823 -0.17348 2021 3 9 59282 0.0529 0.3835 -0.17353 2021 3 10 59283 0.0532 0.3847 -0.17366 2021 3 11 59284 0.0535 0.3859 -0.17391 2021 3 12 59285 0.0539 0.3871 -0.17429 2021 3 13 59286 0.0543 0.3883 -0.17480 2021 3 14 59287 0.0547 0.3895 -0.17537 2021 3 15 59288 0.0551 0.3907 -0.17596 2021 3 16 59289 0.0556 0.3919 -0.17651 2021 3 17 59290 0.0561 0.3931 -0.17697 2021 3 18 59291 0.0566 0.3943 -0.17728 2021 3 19 59292 0.0572 0.3955 -0.17745 2021 3 20 59293 0.0577 0.3967 -0.17746 2021 3 21 59294 0.0583 0.3978 -0.17736 2021 3 22 59295 0.0589 0.3990 -0.17718 2021 3 23 59296 0.0596 0.4002 -0.17698 2021 3 24 59297 0.0602 0.4013 -0.17685 2021 3 25 59298 0.0609 0.4025 -0.17686 2021 3 26 59299 0.0616 0.4036 -0.17711 2021 3 27 59300 0.0624 0.4048 -0.17764 2021 3 28 59301 0.0631 0.4059 -0.17844 2021 3 29 59302 0.0639 0.4070 -0.17942 2021 3 30 59303 0.0648 0.4081 -0.18043 2021 3 31 59304 0.0656 0.4092 -0.18132 2021 4 1 59305 0.0665 0.4103 -0.18199 2021 4 2 59306 0.0673 0.4114 -0.18238 2021 4 3 59307 0.0683 0.4124 -0.18253 2021 4 4 59308 0.0692 0.4135 -0.18251 2021 4 5 59309 0.0701 0.4145 -0.18244 2021 4 6 59310 0.0711 0.4155 -0.18242 2021 4 7 59311 0.0721 0.4165 -0.18251 2021 4 8 59312 0.0732 0.4175 -0.18274 2021 4 9 59313 0.0742 0.4185 -0.18311 2021 4 10 59314 0.0753 0.4195 -0.18359 2021 4 11 59315 0.0764 0.4204 -0.18413 2021 4 12 59316 0.0775 0.4214 -0.18465 2021 4 13 59317 0.0786 0.4223 -0.18511 2021 4 14 59318 0.0798 0.4232 -0.18545 2021 4 15 59319 0.0809 0.4241 -0.18565 2021 4 16 59320 0.0821 0.4250 -0.18568 2021 4 17 59321 0.0833 0.4259 -0.18557 2021 4 18 59322 0.0846 0.4267 -0.18536 2021 4 19 59323 0.0858 0.4275 -0.18509 2021 4 20 59324 0.0871 0.4283 -0.18485 2021 4 21 59325 0.0884 0.4291 -0.18471 2021 4 22 59326 0.0897 0.4299 -0.18476 2021 4 23 59327 0.0910 0.4307 -0.18505 2021 4 24 59328 0.0924 0.4314 -0.18562 2021 4 25 59329 0.0937 0.4321 -0.18642 2021 4 26 59330 0.0951 0.4328 -0.18732 2021 4 27 59331 0.0965 0.4335 -0.18818 2021 4 28 59332 0.0979 0.4341 -0.18885 2021 4 29 59333 0.0993 0.4348 -0.18923 2021 4 30 59334 0.1007 0.4354 -0.18933 2021 5 1 59335 0.1022 0.4360 -0.18921 2021 5 2 59336 0.1037 0.4366 -0.18899 2021 5 3 59337 0.1051 0.4371 -0.18876 2021 5 4 59338 0.1066 0.4376 -0.18862 2021 5 5 59339 0.1081 0.4381 -0.18858 2021 5 6 59340 0.1096 0.4386 -0.18866 2021 5 7 59341 0.1112 0.4391 -0.18882 2021 5 8 59342 0.1127 0.4395 -0.18902 2021 5 9 59343 0.1143 0.4400 -0.18921 2021 5 10 59344 0.1158 0.4404 -0.18932 2021 5 11 59345 0.1174 0.4407 -0.18932 2021 5 12 59346 0.1190 0.4411 -0.18915 2021 5 13 59347 0.1205 0.4414 -0.18880 2021 5 14 59348 0.1221 0.4417 -0.18829 2021 5 15 59349 0.1237 0.4420 -0.18766 2021 5 16 59350 0.1254 0.4423 -0.18694 2021 5 17 59351 0.1270 0.4425 -0.18621 2021 5 18 59352 0.1286 0.4427 -0.18555 2021 5 19 59353 0.1302 0.4429 -0.18502 2021 5 20 59354 0.1319 0.4430 -0.18469 2021 5 21 59355 0.1335 0.4432 -0.18460 2021 5 22 59356 0.1352 0.4433 -0.18474 2021 5 23 59357 0.1368 0.4434 -0.18504 2021 5 24 59358 0.1385 0.4434 -0.18536 2021 5 25 59359 0.1401 0.4435 -0.18556 2021 5 26 59360 0.1418 0.4435 -0.18551 2021 5 27 59361 0.1434 0.4435 -0.18516 2021 5 28 59362 0.1451 0.4434 -0.18455 2021 5 29 59363 0.1468 0.4434 -0.18377 2021 5 30 59364 0.1484 0.4433 -0.18296 2021 5 31 59365 0.1501 0.4431 -0.18220 2021 6 1 59366 0.1518 0.4430 -0.18156 2021 6 2 59367 0.1534 0.4428 -0.18104 2021 6 3 59368 0.1551 0.4426 -0.18061 2021 6 4 59369 0.1567 0.4424 -0.18024 2021 6 5 59370 0.1584 0.4422 -0.17986 2021 6 6 59371 0.1601 0.4419 -0.17943 2021 6 7 59372 0.1617 0.4416 -0.17891 2021 6 8 59373 0.1634 0.4413 -0.17825 2021 6 9 59374 0.1650 0.4410 -0.17742 2021 6 10 59375 0.1666 0.4406 -0.17643 2021 6 11 59376 0.1683 0.4402 -0.17530 2021 6 12 59377 0.1699 0.4398 -0.17408 2021 6 13 59378 0.1715 0.4393 -0.17283 2021 6 14 59379 0.1731 0.4389 -0.17163 2021 6 15 59380 0.1747 0.4384 -0.17054 2021 6 16 59381 0.1763 0.4379 -0.16963 2021 6 17 59382 0.1779 0.4373 -0.16893 2021 6 18 59383 0.1795 0.4367 -0.16845 2021 6 19 59384 0.1811 0.4362 -0.16813 2021 6 20 59385 0.1826 0.4355 -0.16789 2021 6 21 59386 0.1842 0.4349 -0.16760 2021 6 22 59387 0.1857 0.4342 -0.16713 2021 6 23 59388 0.1872 0.4335 -0.16642 2021 6 24 59389 0.1887 0.4328 -0.16544 2021 6 25 59390 0.1902 0.4321 -0.16427 2021 6 26 59391 0.1917 0.4313 -0.16303 2021 6 27 59392 0.1932 0.4305 -0.16182 2021 6 28 59393 0.1947 0.4297 -0.16074 2021 6 29 59394 0.1961 0.4289 -0.15980 2021 6 30 59395 0.1975 0.4280 -0.15898 2021 7 1 59396 0.1990 0.4272 -0.15823 2021 7 2 59397 0.2004 0.4263 -0.15749 2021 7 3 59398 0.2017 0.4253 -0.15671 2021 7 4 59399 0.2031 0.4244 -0.15583 2021 7 5 59400 0.2045 0.4234 -0.15482 2021 7 6 59401 0.2058 0.4225 -0.15364 2021 7 7 59402 0.2071 0.4214 -0.15231 2021 7 8 59403 0.2084 0.4204 -0.15084 2021 7 9 59404 0.2097 0.4194 -0.14928 2021 7 10 59405 0.2109 0.4183 -0.14768 2021 7 11 59406 0.2122 0.4172 -0.14612 2021 7 12 59407 0.2134 0.4161 -0.14468 2021 7 13 59408 0.2146 0.4150 -0.14342 2021 7 14 59409 0.2158 0.4138 -0.14237 2021 7 15 59410 0.2169 0.4126 -0.14154 2021 7 16 59411 0.2181 0.4115 -0.14088 2021 7 17 59412 0.2192 0.4103 -0.14032 2021 7 18 59413 0.2203 0.4090 -0.13975 2021 7 19 59414 0.2213 0.4078 -0.13905 2021 7 20 59415 0.2224 0.4065 -0.13816 2021 7 21 59416 0.2234 0.4052 -0.13704 2021 7 22 59417 0.2244 0.4040 -0.13573 2021 7 23 59418 0.2254 0.4026 -0.13432 2021 7 24 59419 0.2263 0.4013 -0.13294 2021 7 25 59420 0.2272 0.4000 -0.13168 2021 7 26 59421 0.2281 0.3986 -0.13059 2021 7 27 59422 0.2290 0.3972 -0.12967 2021 7 28 59423 0.2299 0.3959 -0.12887 2021 7 29 59424 0.2307 0.3945 -0.12813 2021 7 30 59425 0.2315 0.3930 -0.12737 2021 7 31 59426 0.2323 0.3916 -0.12653 2021 8 1 59427 0.2330 0.3902 -0.12558 2021 8 2 59428 0.2337 0.3887 -0.12448 2021 8 3 59429 0.2344 0.3873 -0.12324 2021 8 4 59430 0.2351 0.3858 -0.12186 2021 8 5 59431 0.2357 0.3843 -0.12039 2021 8 6 59432 0.2363 0.3828 -0.11889 2021 8 7 59433 0.2369 0.3813 -0.11742 2021 8 8 59434 0.2374 0.3797 -0.11606 2021 8 9 59435 0.2379 0.3782 -0.11490 2021 8 10 59436 0.2384 0.3767 -0.11396 2021 8 11 59437 0.2389 0.3751 -0.11328 2021 8 12 59438 0.2393 0.3736 -0.11278 2021 8 13 59439 0.2397 0.3720 -0.11241 2021 8 14 59440 0.2401 0.3704 -0.11203 2021 8 15 59441 0.2404 0.3688 -0.11155 2021 8 16 59442 0.2407 0.3672 -0.11088 2021 8 17 59443 0.2410 0.3656 -0.11000 2021 8 18 59444 0.2413 0.3640 -0.10892 2021 8 19 59445 0.2415 0.3624 -0.10773 2021 8 20 59446 0.2417 0.3608 -0.10653 2021 8 21 59447 0.2419 0.3592 -0.10542 2021 8 22 59448 0.2420 0.3576 -0.10447 2021 8 23 59449 0.2421 0.3560 -0.10368 2021 8 24 59450 0.2422 0.3543 -0.10304 2021 8 25 59451 0.2422 0.3527 -0.10246 2021 8 26 59452 0.2422 0.3511 -0.10187 2021 8 27 59453 0.2422 0.3494 -0.10121 2021 8 28 59454 0.2421 0.3478 -0.10042 2021 8 29 59455 0.2420 0.3462 -0.09948 2021 8 30 59456 0.2419 0.3445 -0.09839 2021 8 31 59457 0.2418 0.3429 -0.09717 2021 9 1 59458 0.2416 0.3413 -0.09585 2021 9 2 59459 0.2414 0.3396 -0.09451 2021 9 3 59460 0.2411 0.3380 -0.09319 2021 9 4 59461 0.2408 0.3364 -0.09198 2021 9 5 59462 0.2405 0.3347 -0.09097 2021 9 6 59463 0.2402 0.3331 -0.09022 2021 9 7 59464 0.2398 0.3315 -0.08976 2021 9 8 59465 0.2394 0.3299 -0.08960 2021 9 9 59466 0.2390 0.3283 -0.08964 2021 9 10 59467 0.2385 0.3266 -0.08978 2021 9 11 59468 0.2381 0.3250 -0.08988 2021 9 12 59469 0.2375 0.3234 -0.08985 2021 9 13 59470 0.2370 0.3219 -0.08964 2021 9 14 59471 0.2364 0.3203 -0.08928 2021 9 15 59472 0.2358 0.3187 -0.08885 2021 9 16 59473 0.2351 0.3171 -0.08844 2021 9 17 59474 0.2345 0.3156 -0.08816 2021 9 18 59475 0.2338 0.3140 -0.08807 2021 9 19 59476 0.2330 0.3125 -0.08819 2021 9 20 59477 0.2323 0.3109 -0.08848 2021 9 21 59478 0.2315 0.3094 -0.08888 2021 9 22 59479 0.2306 0.3079 -0.08932 2021 9 23 59480 0.2298 0.3064 -0.08969 2021 9 24 59481 0.2289 0.3049 -0.08993 2021 9 25 59482 0.2280 0.3034 -0.08996 2021 9 26 59483 0.2271 0.3019 -0.08975 2021 9 27 59484 0.2261 0.3005 -0.08933 2021 9 28 59485 0.2251 0.2991 -0.08874 2021 9 29 59486 0.2241 0.2976 -0.08806 2021 9 30 59487 0.2231 0.2962 -0.08741 2021 10 1 59488 0.2220 0.2948 -0.08684 2021 10 2 59489 0.2209 0.2934 -0.08642 2021 10 3 59490 0.2197 0.2921 -0.08624 2021 10 4 59491 0.2186 0.2907 -0.08634 2021 10 5 59492 0.2174 0.2894 -0.08666 2021 10 6 59493 0.2162 0.2880 -0.08715 2021 10 7 59494 0.2150 0.2867 -0.08777 2021 10 8 59495 0.2137 0.2855 -0.08834 2021 10 9 59496 0.2124 0.2842 -0.08869 2021 10 10 59497 0.2111 0.2829 -0.08874 2021 10 11 59498 0.2098 0.2817 -0.08848 2021 10 12 59499 0.2084 0.2805 -0.08805 2021 10 13 59500 0.2071 0.2793 -0.08754 2021 10 14 59501 0.2057 0.2781 -0.08712 2021 10 15 59502 0.2042 0.2770 -0.08691 2021 10 16 59503 0.2028 0.2758 -0.08688 2021 10 17 59504 0.2013 0.2747 -0.08706 2021 10 18 59505 0.1998 0.2736 -0.08741 2021 10 19 59506 0.1983 0.2726 -0.08784 2021 10 20 59507 0.1968 0.2715 -0.08823 2021 10 21 59508 0.1952 0.2705 -0.08856 2021 10 22 59509 0.1937 0.2695 -0.08881 2021 10 23 59510 0.1921 0.2685 -0.08890 2021 10 24 59511 0.1905 0.2675 -0.08883 2021 10 25 59512 0.1888 0.2666 -0.08863 2021 10 26 59513 0.1872 0.2657 -0.08839 2021 10 27 59514 0.1855 0.2648 -0.08811 2021 10 28 59515 0.1839 0.2639 -0.08781 2021 10 29 59516 0.1822 0.2631 -0.08760 2021 10 30 59517 0.1804 0.2623 -0.08755 2021 10 31 59518 0.1787 0.2615 -0.08768 2021 11 1 59519 0.1770 0.2607 -0.08806 2021 11 2 59520 0.1752 0.2600 -0.08870 2021 11 3 59521 0.1734 0.2593 -0.08952 2021 11 4 59522 0.1716 0.2586 -0.09039 2021 11 5 59523 0.1698 0.2579 -0.09114 2021 11 6 59524 0.1680 0.2573 -0.09176 2021 11 7 59525 0.1662 0.2567 -0.09207 2021 11 8 59526 0.1644 0.2561 -0.09216 2021 11 9 59527 0.1625 0.2556 -0.09213 2021 11 10 59528 0.1606 0.2550 -0.09203 2021 11 11 59529 0.1588 0.2545 -0.09195 2021 11 12 59530 0.1569 0.2541 -0.09199 2021 11 13 59531 0.1550 0.2536 -0.09227 2021 11 14 59532 0.1531 0.2532 -0.09281 2021 11 15 59533 0.1512 0.2528 -0.09345 2021 11 16 59534 0.1493 0.2525 -0.09422 2021 11 17 59535 0.1473 0.2521 -0.09494 2021 11 18 59536 0.1454 0.2518 -0.09555 2021 11 19 59537 0.1435 0.2515 -0.09600 2021 11 20 59538 0.1415 0.2513 -0.09624 2021 11 21 59539 0.1396 0.2511 -0.09634 2021 11 22 59540 0.1376 0.2509 -0.09634 2021 11 23 59541 0.1357 0.2507 -0.09629 2021 11 24 59542 0.1337 0.2506 -0.09622 2021 11 25 59543 0.1318 0.2505 -0.09621 2021 11 26 59544 0.1298 0.2505 -0.09633 2021 11 27 59545 0.1278 0.2504 -0.09668 2021 11 28 59546 0.1259 0.2504 -0.09729 2021 11 29 59547 0.1239 0.2504 -0.09818 2021 11 30 59548 0.1219 0.2505 -0.09924 2021 12 1 59549 0.1200 0.2505 -0.10036 2021 12 2 59550 0.1180 0.2507 -0.10146 2021 12 3 59551 0.1160 0.2508 -0.10242 2021 12 4 59552 0.1141 0.2510 -0.10314 2021 12 5 59553 0.1121 0.2512 -0.10361 2021 12 6 59554 0.1101 0.2514 -0.10388 2021 12 7 59555 0.1082 0.2516 -0.10413 2021 12 8 59556 0.1062 0.2519 -0.10438 2021 12 9 59557 0.1043 0.2522 -0.10472 2021 12 10 59558 0.1023 0.2526 -0.10523 2021 12 11 59559 0.1004 0.2530 -0.10585 2021 12 12 59560 0.0985 0.2534 -0.10662 2021 12 13 59561 0.0966 0.2538 -0.10741 2021 12 14 59562 0.0947 0.2543 -0.10810 2021 12 15 59563 0.0928 0.2547 -0.10868 2021 12 16 59564 0.0909 0.2553 -0.10912 2021 12 17 59565 0.0890 0.2558 -0.10927 2021 12 18 59566 0.0871 0.2564 -0.10924 2021 12 19 59567 0.0852 0.2570 -0.10904 2021 12 20 59568 0.0834 0.2576 -0.10868 2021 12 21 59569 0.0815 0.2583 -0.10829 2021 12 22 59570 0.0797 0.2590 -0.10798 2021 12 23 59571 0.0779 0.2597 -0.10778 2021 12 24 59572 0.0761 0.2605 -0.10773 2021 12 25 59573 0.0743 0.2612 -0.10785 2021 12 26 59574 0.0725 0.2620 -0.10817 2021 12 27 59575 0.0707 0.2629 -0.10868 2021 12 28 59576 0.0690 0.2637 -0.10928 2021 12 29 59577 0.0673 0.2646 -0.10981 2021 12 30 59578 0.0656 0.2655 -0.11019 2021 12 31 59579 0.0639 0.2664 -0.11034 2022 1 1 59580 0.0622 0.2674 -0.11024 2022 1 2 59581 0.0605 0.2684 -0.10992 2022 1 3 59582 0.0589 0.2694 -0.10948 2022 1 4 59583 0.0572 0.2704 -0.10908 2022 1 5 59584 0.0556 0.2715 -0.10891 2022 1 6 59585 0.0540 0.2726 -0.10896 2022 1 7 59586 0.0525 0.2737 -0.10919 2022 1 8 59587 0.0509 0.2748 -0.10949 2022 1 9 59588 0.0494 0.2760 -0.10983 2022 1 10 59589 0.0479 0.2772 -0.11022 2022 1 11 59590 0.0464 0.2784 -0.11060 2022 1 12 59591 0.0449 0.2796 -0.11091 2022 1 13 59592 0.0435 0.2809 -0.11108 2022 1 14 59593 0.0421 0.2822 -0.11111 2022 1 15 59594 0.0407 0.2835 -0.11101 2022 1 16 59595 0.0393 0.2848 -0.11080 2022 1 17 59596 0.0380 0.2861 -0.11053 2022 1 18 59597 0.0367 0.2875 -0.11025 2022 1 19 59598 0.0354 0.2889 -0.11005 2022 1 20 59599 0.0341 0.2903 -0.10999 2022 1 21 59600 0.0329 0.2917 -0.11008 2022 1 22 59601 0.0316 0.2932 -0.11034 2022 1 23 59602 0.0304 0.2946 -0.11075 2022 1 24 59603 0.0293 0.2961 -0.11122 2022 1 25 59604 0.0282 0.2976 -0.11167 2022 1 26 59605 0.0270 0.2991 -0.11199 2022 1 27 59606 0.0260 0.3007 -0.11215 2022 1 28 59607 0.0249 0.3022 -0.11205 2022 1 29 59608 0.0239 0.3038 -0.11174 2022 1 30 59609 0.0229 0.3054 -0.11132 2022 1 31 59610 0.0219 0.3070 -0.11092 2022 2 1 59611 0.0210 0.3086 -0.11070 2022 2 2 59612 0.0201 0.3103 -0.11066 2022 2 3 59613 0.0192 0.3119 -0.11089 2022 2 4 59614 0.0184 0.3136 -0.11138 2022 2 5 59615 0.0176 0.3153 -0.11200 2022 2 6 59616 0.0168 0.3169 -0.11264 2022 2 7 59617 0.0160 0.3186 -0.11326 2022 2 8 59618 0.0153 0.3204 -0.11375 2022 2 9 59619 0.0146 0.3221 -0.11406 2022 2 10 59620 0.0140 0.3238 -0.11423 2022 2 11 59621 0.0134 0.3256 -0.11425 2022 2 12 59622 0.0128 0.3274 -0.11415 2022 2 13 59623 0.0122 0.3291 -0.11408 2022 2 14 59624 0.0117 0.3309 -0.11407 2022 2 15 59625 0.0112 0.3327 -0.11412 2022 2 16 59626 0.0107 0.3345 -0.11435 2022 2 17 59627 0.0103 0.3363 -0.11484 2022 2 18 59628 0.0099 0.3381 -0.11560 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) 59241 -109.14 0.74 -6.20 0.08 59242 -108.85 0.74 -6.39 0.08 59243 -108.40 0.74 -6.39 0.08 59244 -107.98 1.00 -6.26 0.02 59245 -107.77 0.84 -6.15 0.03 59246 -107.85 0.84 -6.14 0.03 59247 -108.18 0.17 -6.21 0.04 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 59241 0.282 0.294 0.074 0.082 59242 0.318 0.294 0.049 0.082 59243 0.339 0.294 0.024 0.082 59244 0.330 0.398 0.001 0.024 59245 0.292 0.335 -0.018 0.030 59246 0.234 0.335 -0.035 0.030 59247 0.166 0.068 -0.051 0.039 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).