********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 5 April 2018 Vol. XXXI No. 014 ______________________________________________________________________ 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 15 Mar 2018 at 0000 UTC Beginning 1 January 2017: TAI-UTC = 37.000 000 seconds *********************************************************************** * * * Please note that daily and Bulletin A EOP data can be obtained from * * the primary Earth Orientation (EO) servers at: * * http://maia.usno.navy.mil ftp://maia.usno.navy.mil * * and from the backup EO server at: * * http://toshi.nofs.navy.mil ftp://toshi.nofs.navy.mil * * * * An additional backup mirror of the daily and Bulletin A EOP data * * is now hosted by NASA's Archive of Space Geodesy Data server at: * * ftp://cddis.gsfc.nasa.gov/pub/products/iers * * Daily EOP data will be uploaded here at 18:00 UTC, and * * Bulletin A EOP data should be available by 20:00 UTC. * * * * We are currently not able to receive email at * * ser7@maia.usno.navy.mil. Questions and enquiries can now be * * directed to the following email account: navobsy_eop.fct@navy.mil * * * * As of Bulletin A Vol. XXXI, No. 013, on 29 March 2018, we have * * transitioned the IERS RS/PC solution to be consistent with the * * 14 C04 EOP series for polar motion, UT1-UTC, and celestial pole * * offsets. This change resulted in a jump of less than 0.1 mas in * * polar motion and 10 us in UT1-UTC. Small adjustments were made * * to celestial pole offsets from approximately March 2017 to present * * in order to be more consistent with the 14 C04 solution. The only * * users who need to be concerned with this change are those who need * * EOP accuracy to better than 0.1 mas (~0.3 cm at the Earth's * * surface, ~1.2 cm at GPS orbit). * * * * 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 18 3 30 58207 0.02956 .00009 0.39076 .00009 0.136874 0.000010 18 3 31 58208 0.03100 .00009 0.39263 .00009 0.135485 0.000012 18 4 1 58209 0.03225 .00009 0.39446 .00009 0.134098 0.000012 18 4 2 58210 0.03313 .00009 0.39628 .00009 0.132771 0.000009 18 4 3 58211 0.03374 .00009 0.39819 .00009 0.131557 0.000009 18 4 4 58212 0.03409 .00009 0.40017 .00009 0.130514 0.000007 18 4 5 58213 0.03426 .00009 0.40210 .00009 0.129636 0.000055 IERS Final Values MJD x y UT1-UTC " " s 18 2 2 58151 0.0141 0.2902 0.19509 18 2 3 58152 0.0125 0.2917 0.19351 18 2 4 58153 0.0106 0.2933 0.19183 18 2 5 58154 0.0083 0.2954 0.19015 18 2 6 58155 0.0066 0.2967 0.18855 18 2 7 58156 0.0062 0.2978 0.18714 18 2 8 58157 0.0056 0.2996 0.18589 18 2 9 58158 0.0047 0.3014 0.18480 18 2 10 58159 0.0041 0.3032 0.18392 18 2 11 58160 0.0035 0.3052 0.18314 18 2 12 58161 0.0033 0.3072 0.18239 18 2 13 58162 0.0030 0.3093 0.18163 18 2 14 58163 0.0026 0.3113 0.18085 18 2 15 58164 0.0019 0.3133 0.18003 18 2 16 58165 0.0013 0.3150 0.17914 18 2 17 58166 0.0010 0.3164 0.17820 18 2 18 58167 0.0006 0.3180 0.17715 18 2 19 58168 0.0009 0.3196 0.17600 18 2 20 58169 0.0012 0.3217 0.17480 18 2 21 58170 0.0020 0.3243 0.17366 18 2 22 58171 0.0024 0.3270 0.17257 18 2 23 58172 0.0025 0.3292 0.17153 18 2 24 58173 0.0023 0.3317 0.17064 18 2 25 58174 0.0019 0.3339 0.16982 18 2 26 58175 0.0012 0.3361 0.16903 18 2 27 58176 0.0003 0.3380 0.16824 18 2 28 58177 -0.0005 0.3396 0.16741 18 3 1 58178 -0.0003 0.3414 0.16646 _______________________________________________________________________ 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 = 0.1252 - 0.1221 cos A + 0.0728 sin A + 0.0273 cos C - 0.0056 sin C y = 0.3395 + 0.0672 cos A + 0.1187 sin A - 0.0056 cos C - 0.0273 sin C UT1-UTC = 0.1676 - 0.00085 (MJD - 58221) - (UT2-UT1) where A = 2*pi*(MJD-58213)/365.25 and C = 2*pi*(MJD-58213)/435. TAI-UTC(MJD 58214) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58213)**0.80 S t = 0.00025 (MJD-58213)**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) 2018 4 6 58214 0.0346 0.4038 0.12888 2018 4 7 58215 0.0350 0.4053 0.12821 2018 4 8 58216 0.0355 0.4066 0.12759 2018 4 9 58217 0.0363 0.4078 0.12700 2018 4 10 58218 0.0372 0.4089 0.12642 2018 4 11 58219 0.0382 0.4100 0.12581 2018 4 12 58220 0.0393 0.4112 0.12514 2018 4 13 58221 0.0404 0.4124 0.12436 2018 4 14 58222 0.0415 0.4135 0.12344 2018 4 15 58223 0.0426 0.4146 0.12235 2018 4 16 58224 0.0437 0.4156 0.12113 2018 4 17 58225 0.0449 0.4167 0.11990 2018 4 18 58226 0.0461 0.4177 0.11874 2018 4 19 58227 0.0473 0.4187 0.11771 2018 4 20 58228 0.0486 0.4197 0.11681 2018 4 21 58229 0.0499 0.4207 0.11601 2018 4 22 58230 0.0512 0.4217 0.11527 2018 4 23 58231 0.0524 0.4227 0.11449 2018 4 24 58232 0.0537 0.4237 0.11364 2018 4 25 58233 0.0550 0.4247 0.11266 2018 4 26 58234 0.0563 0.4257 0.11159 2018 4 27 58235 0.0576 0.4266 0.11046 2018 4 28 58236 0.0589 0.4275 0.10930 2018 4 29 58237 0.0602 0.4284 0.10818 2018 4 30 58238 0.0616 0.4292 0.10716 2018 5 1 58239 0.0629 0.4300 0.10629 2018 5 2 58240 0.0644 0.4308 0.10557 2018 5 3 58241 0.0658 0.4315 0.10502 2018 5 4 58242 0.0672 0.4322 0.10459 2018 5 5 58243 0.0687 0.4329 0.10424 2018 5 6 58244 0.0701 0.4336 0.10393 2018 5 7 58245 0.0716 0.4342 0.10361 2018 5 8 58246 0.0731 0.4348 0.10321 2018 5 9 58247 0.0746 0.4354 0.10271 2018 5 10 58248 0.0761 0.4360 0.10208 2018 5 11 58249 0.0776 0.4365 0.10131 2018 5 12 58250 0.0792 0.4370 0.10041 2018 5 13 58251 0.0807 0.4375 0.09942 2018 5 14 58252 0.0823 0.4380 0.09838 2018 5 15 58253 0.0839 0.4384 0.09739 2018 5 16 58254 0.0854 0.4389 0.09650 2018 5 17 58255 0.0870 0.4393 0.09572 2018 5 18 58256 0.0886 0.4397 0.09506 2018 5 19 58257 0.0902 0.4400 0.09445 2018 5 20 58258 0.0918 0.4403 0.09384 2018 5 21 58259 0.0934 0.4406 0.09317 2018 5 22 58260 0.0950 0.4409 0.09241 2018 5 23 58261 0.0967 0.4411 0.09156 2018 5 24 58262 0.0983 0.4414 0.09067 2018 5 25 58263 0.0999 0.4416 0.08977 2018 5 26 58264 0.1016 0.4417 0.08895 2018 5 27 58265 0.1032 0.4419 0.08823 2018 5 28 58266 0.1048 0.4420 0.08767 2018 5 29 58267 0.1065 0.4421 0.08728 2018 5 30 58268 0.1081 0.4421 0.08706 2018 5 31 58269 0.1098 0.4422 0.08698 2018 6 1 58270 0.1114 0.4422 0.08700 2018 6 2 58271 0.1131 0.4422 0.08707 2018 6 3 58272 0.1147 0.4421 0.08715 2018 6 4 58273 0.1164 0.4421 0.08717 2018 6 5 58274 0.1180 0.4420 0.08711 2018 6 6 58275 0.1197 0.4419 0.08695 2018 6 7 58276 0.1213 0.4417 0.08666 2018 6 8 58277 0.1230 0.4416 0.08625 2018 6 9 58278 0.1246 0.4414 0.08576 2018 6 10 58279 0.1263 0.4411 0.08521 2018 6 11 58280 0.1279 0.4409 0.08467 2018 6 12 58281 0.1295 0.4406 0.08421 2018 6 13 58282 0.1312 0.4403 0.08388 2018 6 14 58283 0.1328 0.4400 0.08366 2018 6 15 58284 0.1344 0.4397 0.08354 2018 6 16 58285 0.1360 0.4393 0.08342 2018 6 17 58286 0.1376 0.4389 0.08326 2018 6 18 58287 0.1392 0.4385 0.08299 2018 6 19 58288 0.1408 0.4380 0.08261 2018 6 20 58289 0.1424 0.4376 0.08216 2018 6 21 58290 0.1439 0.4371 0.08170 2018 6 22 58291 0.1455 0.4365 0.08130 2018 6 23 58292 0.1471 0.4360 0.08098 2018 6 24 58293 0.1486 0.4354 0.08081 2018 6 25 58294 0.1501 0.4348 0.08079 2018 6 26 58295 0.1516 0.4342 0.08091 2018 6 27 58296 0.1532 0.4336 0.08116 2018 6 28 58297 0.1546 0.4329 0.08150 2018 6 29 58298 0.1561 0.4322 0.08190 2018 6 30 58299 0.1576 0.4315 0.08231 2018 7 1 58300 0.1591 0.4308 0.08268 2018 7 2 58301 0.1605 0.4300 0.08298 2018 7 3 58302 0.1619 0.4292 0.08317 2018 7 4 58303 0.1633 0.4284 0.08325 2018 7 5 58304 0.1647 0.4276 0.08322 2018 7 6 58305 0.1661 0.4268 0.08309 2018 7 7 58306 0.1675 0.4259 0.08290 2018 7 8 58307 0.1689 0.4250 0.08269 2018 7 9 58308 0.1702 0.4241 0.08251 2018 7 10 58309 0.1715 0.4232 0.08241 2018 7 11 58310 0.1728 0.4222 0.08243 2018 7 12 58311 0.1741 0.4213 0.08254 2018 7 13 58312 0.1754 0.4203 0.08268 2018 7 14 58313 0.1766 0.4193 0.08279 2018 7 15 58314 0.1778 0.4182 0.08278 2018 7 16 58315 0.1790 0.4172 0.08264 2018 7 17 58316 0.1802 0.4161 0.08240 2018 7 18 58317 0.1814 0.4150 0.08211 2018 7 19 58318 0.1825 0.4139 0.08185 2018 7 20 58319 0.1837 0.4128 0.08168 2018 7 21 58320 0.1848 0.4117 0.08164 2018 7 22 58321 0.1859 0.4105 0.08176 2018 7 23 58322 0.1869 0.4093 0.08206 2018 7 24 58323 0.1880 0.4081 0.08250 2018 7 25 58324 0.1890 0.4069 0.08302 2018 7 26 58325 0.1900 0.4057 0.08359 2018 7 27 58326 0.1909 0.4045 0.08417 2018 7 28 58327 0.1919 0.4032 0.08470 2018 7 29 58328 0.1928 0.4020 0.08515 2018 7 30 58329 0.1937 0.4007 0.08549 2018 7 31 58330 0.1946 0.3994 0.08570 2018 8 1 58331 0.1954 0.3981 0.08579 2018 8 2 58332 0.1963 0.3968 0.08576 2018 8 3 58333 0.1971 0.3954 0.08566 2018 8 4 58334 0.1978 0.3941 0.08553 2018 8 5 58335 0.1986 0.3927 0.08541 2018 8 6 58336 0.1993 0.3914 0.08533 2018 8 7 58337 0.2000 0.3900 0.08534 2018 8 8 58338 0.2007 0.3886 0.08542 2018 8 9 58339 0.2013 0.3872 0.08554 2018 8 10 58340 0.2019 0.3858 0.08561 2018 8 11 58341 0.2025 0.3844 0.08556 2018 8 12 58342 0.2031 0.3829 0.08535 2018 8 13 58343 0.2036 0.3815 0.08497 2018 8 14 58344 0.2041 0.3801 0.08447 2018 8 15 58345 0.2046 0.3786 0.08394 2018 8 16 58346 0.2051 0.3771 0.08346 2018 8 17 58347 0.2055 0.3757 0.08310 2018 8 18 58348 0.2059 0.3742 0.08289 2018 8 19 58349 0.2063 0.3727 0.08283 2018 8 20 58350 0.2066 0.3712 0.08290 2018 8 21 58351 0.2069 0.3697 0.08307 2018 8 22 58352 0.2072 0.3683 0.08329 2018 8 23 58353 0.2074 0.3668 0.08352 2018 8 24 58354 0.2077 0.3653 0.08370 2018 8 25 58355 0.2079 0.3637 0.08380 2018 8 26 58356 0.2080 0.3622 0.08378 2018 8 27 58357 0.2082 0.3607 0.08363 2018 8 28 58358 0.2083 0.3592 0.08333 2018 8 29 58359 0.2084 0.3577 0.08291 2018 8 30 58360 0.2084 0.3562 0.08241 2018 8 31 58361 0.2084 0.3547 0.08186 2018 9 1 58362 0.2084 0.3532 0.08131 2018 9 2 58363 0.2084 0.3516 0.08082 2018 9 3 58364 0.2083 0.3501 0.08039 2018 9 4 58365 0.2082 0.3486 0.08004 2018 9 5 58366 0.2081 0.3471 0.07972 2018 9 6 58367 0.2080 0.3456 0.07938 2018 9 7 58368 0.2078 0.3441 0.07894 2018 9 8 58369 0.2076 0.3426 0.07833 2018 9 9 58370 0.2073 0.3411 0.07752 2018 9 10 58371 0.2071 0.3396 0.07653 2018 9 11 58372 0.2068 0.3381 0.07545 2018 9 12 58373 0.2064 0.3366 0.07437 2018 9 13 58374 0.2061 0.3351 0.07337 2018 9 14 58375 0.2057 0.3336 0.07251 2018 9 15 58376 0.2053 0.3322 0.07181 2018 9 16 58377 0.2048 0.3307 0.07126 2018 9 17 58378 0.2044 0.3293 0.07083 2018 9 18 58379 0.2039 0.3278 0.07048 2018 9 19 58380 0.2034 0.3264 0.07014 2018 9 20 58381 0.2028 0.3249 0.06978 2018 9 21 58382 0.2022 0.3235 0.06934 2018 9 22 58383 0.2016 0.3221 0.06879 2018 9 23 58384 0.2010 0.3207 0.06810 2018 9 24 58385 0.2003 0.3193 0.06728 2018 9 25 58386 0.1996 0.3179 0.06632 2018 9 26 58387 0.1989 0.3166 0.06526 2018 9 27 58388 0.1982 0.3152 0.06416 2018 9 28 58389 0.1974 0.3138 0.06306 2018 9 29 58390 0.1966 0.3125 0.06203 2018 9 30 58391 0.1958 0.3112 0.06109 2018 10 1 58392 0.1949 0.3099 0.06026 2018 10 2 58393 0.1941 0.3086 0.05949 2018 10 3 58394 0.1932 0.3073 0.05874 2018 10 4 58395 0.1922 0.3060 0.05794 2018 10 5 58396 0.1913 0.3048 0.05701 2018 10 6 58397 0.1903 0.3035 0.05591 2018 10 7 58398 0.1893 0.3023 0.05463 2018 10 8 58399 0.1883 0.3011 0.05323 2018 10 9 58400 0.1872 0.2999 0.05177 2018 10 10 58401 0.1862 0.2987 0.05037 2018 10 11 58402 0.1851 0.2976 0.04908 2018 10 12 58403 0.1840 0.2964 0.04795 2018 10 13 58404 0.1828 0.2953 0.04699 2018 10 14 58405 0.1817 0.2942 0.04618 2018 10 15 58406 0.1805 0.2931 0.04547 2018 10 16 58407 0.1793 0.2921 0.04483 2018 10 17 58408 0.1781 0.2910 0.04420 2018 10 18 58409 0.1768 0.2900 0.04353 2018 10 19 58410 0.1756 0.2890 0.04279 2018 10 20 58411 0.1743 0.2880 0.04194 2018 10 21 58412 0.1730 0.2870 0.04099 2018 10 22 58413 0.1717 0.2861 0.03992 2018 10 23 58414 0.1703 0.2851 0.03877 2018 10 24 58415 0.1690 0.2842 0.03757 2018 10 25 58416 0.1676 0.2834 0.03637 2018 10 26 58417 0.1662 0.2825 0.03522 2018 10 27 58418 0.1648 0.2816 0.03417 2018 10 28 58419 0.1634 0.2808 0.03321 2018 10 29 58420 0.1619 0.2800 0.03232 2018 10 30 58421 0.1605 0.2793 0.03145 2018 10 31 58422 0.1590 0.2785 0.03053 2018 11 1 58423 0.1575 0.2778 0.02950 2018 11 2 58424 0.1560 0.2771 0.02832 2018 11 3 58425 0.1545 0.2764 0.02697 2018 11 4 58426 0.1529 0.2757 0.02546 2018 11 5 58427 0.1514 0.2751 0.02385 2018 11 6 58428 0.1498 0.2745 0.02223 2018 11 7 58429 0.1483 0.2739 0.02070 2018 11 8 58430 0.1467 0.2734 0.01934 2018 11 9 58431 0.1451 0.2728 0.01819 2018 11 10 58432 0.1435 0.2723 0.01723 2018 11 11 58433 0.1419 0.2718 0.01641 2018 11 12 58434 0.1403 0.2714 0.01568 2018 11 13 58435 0.1386 0.2709 0.01498 2018 11 14 58436 0.1370 0.2705 0.01426 2018 11 15 58437 0.1353 0.2702 0.01347 2018 11 16 58438 0.1337 0.2698 0.01259 2018 11 17 58439 0.1320 0.2695 0.01159 2018 11 18 58440 0.1303 0.2692 0.01046 2018 11 19 58441 0.1287 0.2689 0.00923 2018 11 20 58442 0.1270 0.2686 0.00795 2018 11 21 58443 0.1253 0.2684 0.00664 2018 11 22 58444 0.1236 0.2682 0.00531 2018 11 23 58445 0.1219 0.2680 0.00404 2018 11 24 58446 0.1202 0.2679 0.00290 2018 11 25 58447 0.1185 0.2678 0.00197 2018 11 26 58448 0.1168 0.2677 0.00110 2018 11 27 58449 0.1151 0.2676 0.00027 2018 11 28 58450 0.1133 0.2676 -0.00057 2018 11 29 58451 0.1116 0.2676 -0.00155 2018 11 30 58452 0.1099 0.2676 -0.00269 2018 12 1 58453 0.1082 0.2677 -0.00399 2018 12 2 58454 0.1065 0.2677 -0.00528 2018 12 3 58455 0.1048 0.2678 -0.00662 2018 12 4 58456 0.1031 0.2679 -0.00796 2018 12 5 58457 0.1013 0.2681 -0.00916 2018 12 6 58458 0.0996 0.2683 -0.01017 2018 12 7 58459 0.0979 0.2685 -0.01108 2018 12 8 58460 0.0962 0.2687 -0.01180 2018 12 9 58461 0.0945 0.2690 -0.01246 2018 12 10 58462 0.0928 0.2693 -0.01309 2018 12 11 58463 0.0911 0.2696 -0.01372 2018 12 12 58464 0.0895 0.2699 -0.01445 2018 12 13 58465 0.0878 0.2703 -0.01529 2018 12 14 58466 0.0861 0.2707 -0.01631 2018 12 15 58467 0.0844 0.2711 -0.01749 2018 12 16 58468 0.0828 0.2715 -0.01876 2018 12 17 58469 0.0811 0.2720 -0.02014 2018 12 18 58470 0.0795 0.2725 -0.02160 2018 12 19 58471 0.0778 0.2730 -0.02309 2018 12 20 58472 0.0762 0.2736 -0.02460 2018 12 21 58473 0.0746 0.2741 -0.02598 2018 12 22 58474 0.0730 0.2747 -0.02722 2018 12 23 58475 0.0714 0.2754 -0.02836 2018 12 24 58476 0.0698 0.2760 -0.02948 2018 12 25 58477 0.0683 0.2767 -0.03067 2018 12 26 58478 0.0667 0.2774 -0.03202 2018 12 27 58479 0.0652 0.2781 -0.03354 2018 12 28 58480 0.0636 0.2789 -0.03516 2018 12 29 58481 0.0621 0.2796 -0.03686 2018 12 30 58482 0.0606 0.2804 -0.03852 2018 12 31 58483 0.0591 0.2812 -0.04004 2019 1 1 58484 0.0577 0.2821 -0.04139 2019 1 2 58485 0.0562 0.2829 -0.04257 2019 1 3 58486 0.0548 0.2838 -0.04361 2019 1 4 58487 0.0533 0.2847 -0.04454 2019 1 5 58488 0.0519 0.2857 -0.04535 2019 1 6 58489 0.0505 0.2866 -0.04601 2019 1 7 58490 0.0492 0.2876 -0.04668 2019 1 8 58491 0.0478 0.2886 -0.04733 2019 1 9 58492 0.0465 0.2896 -0.04808 2019 1 10 58493 0.0452 0.2907 -0.04901 2019 1 11 58494 0.0439 0.2917 -0.05018 2019 1 12 58495 0.0426 0.2928 -0.05149 2019 1 13 58496 0.0413 0.2939 -0.05293 2019 1 14 58497 0.0401 0.2950 -0.05445 2019 1 15 58498 0.0389 0.2962 -0.05596 2019 1 16 58499 0.0377 0.2973 -0.05740 2019 1 17 58500 0.0365 0.2985 -0.05880 2019 1 18 58501 0.0354 0.2997 -0.06008 2019 1 19 58502 0.0342 0.3009 -0.06122 2019 1 20 58503 0.0331 0.3021 -0.06231 2019 1 21 58504 0.0320 0.3034 -0.06339 2019 1 22 58505 0.0310 0.3046 -0.06457 2019 1 23 58506 0.0300 0.3059 -0.06598 2019 1 24 58507 0.0289 0.3072 -0.06756 2019 1 25 58508 0.0280 0.3085 -0.06917 2019 1 26 58509 0.0270 0.3099 -0.07081 2019 1 27 58510 0.0261 0.3112 -0.07242 2019 1 28 58511 0.0252 0.3126 -0.07392 2019 1 29 58512 0.0243 0.3139 -0.07524 2019 1 30 58513 0.0234 0.3153 -0.07636 2019 1 31 58514 0.0226 0.3167 -0.07731 2019 2 1 58515 0.0218 0.3181 -0.07810 2019 2 2 58516 0.0210 0.3196 -0.07884 2019 2 3 58517 0.0203 0.3210 -0.07957 2019 2 4 58518 0.0195 0.3224 -0.08035 2019 2 5 58519 0.0188 0.3239 -0.08111 2019 2 6 58520 0.0182 0.3254 -0.08202 2019 2 7 58521 0.0175 0.3269 -0.08310 2019 2 8 58522 0.0169 0.3283 -0.08430 2019 2 9 58523 0.0163 0.3298 -0.08568 2019 2 10 58524 0.0158 0.3314 -0.08715 2019 2 11 58525 0.0153 0.3329 -0.08864 2019 2 12 58526 0.0148 0.3344 -0.09016 2019 2 13 58527 0.0143 0.3359 -0.09170 2019 2 14 58528 0.0138 0.3375 -0.09315 2019 2 15 58529 0.0134 0.3390 -0.09452 2019 2 16 58530 0.0131 0.3406 -0.09590 2019 2 17 58531 0.0127 0.3421 -0.09733 2019 2 18 58532 0.0124 0.3437 -0.09893 2019 2 19 58533 0.0121 0.3453 -0.10073 2019 2 20 58534 0.0118 0.3468 -0.10273 2019 2 21 58535 0.0116 0.3484 -0.10495 2019 2 22 58536 0.0114 0.3500 -0.10731 2019 2 23 58537 0.0112 0.3516 -0.10965 2019 2 24 58538 0.0111 0.3532 -0.11185 2019 2 25 58539 0.0110 0.3548 -0.11383 2019 2 26 58540 0.0109 0.3564 -0.11556 2019 2 27 58541 0.0109 0.3579 -0.11703 2019 2 28 58542 0.0108 0.3595 -0.11834 2019 3 1 58543 0.0109 0.3611 -0.11965 2019 3 2 58544 0.0109 0.3627 -0.12094 2019 3 3 58545 0.0110 0.3643 -0.12223 2019 3 4 58546 0.0111 0.3659 -0.12357 2019 3 5 58547 0.0112 0.3675 -0.12495 2019 3 6 58548 0.0114 0.3691 -0.12642 2019 3 7 58549 0.0116 0.3707 -0.12799 2019 3 8 58550 0.0118 0.3722 -0.12968 2019 3 9 58551 0.0121 0.3738 -0.13151 2019 3 10 58552 0.0124 0.3754 -0.13342 2019 3 11 58553 0.0127 0.3770 -0.13533 2019 3 12 58554 0.0130 0.3785 -0.13712 2019 3 13 58555 0.0134 0.3801 -0.13882 2019 3 14 58556 0.0138 0.3816 -0.14046 2019 3 15 58557 0.0143 0.3832 -0.14199 2019 3 16 58558 0.0147 0.3847 -0.14349 2019 3 17 58559 0.0152 0.3862 -0.14502 2019 3 18 58560 0.0158 0.3878 -0.14664 2019 3 19 58561 0.0163 0.3893 -0.14844 2019 3 20 58562 0.0169 0.3908 -0.15055 2019 3 21 58563 0.0175 0.3923 -0.15285 2019 3 22 58564 0.0182 0.3938 -0.15516 2019 3 23 58565 0.0188 0.3952 -0.15734 2019 3 24 58566 0.0195 0.3967 -0.15932 2019 3 25 58567 0.0203 0.3981 -0.16114 2019 3 26 58568 0.0210 0.3996 -0.16277 2019 3 27 58569 0.0218 0.4010 -0.16419 2019 3 28 58570 0.0226 0.4024 -0.16547 2019 3 29 58571 0.0235 0.4038 -0.16672 2019 3 30 58572 0.0243 0.4052 -0.16802 2019 3 31 58573 0.0252 0.4066 -0.16946 2019 4 1 58574 0.0262 0.4080 -0.17097 2019 4 2 58575 0.0271 0.4093 -0.17260 2019 4 3 58576 0.0281 0.4106 -0.17435 2019 4 4 58577 0.0291 0.4120 -0.17618 2019 4 5 58578 0.0301 0.4133 -0.17807 These predictions are based on all announced leap seconds. IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 58151 -103.7 -8.9 58152 -103.2 -9.0 58153 -103.2 -9.0 58154 -103.5 -8.8 58155 -103.9 -8.6 58156 -104.1 -8.6 58157 -104.4 -8.7 58158 -104.7 -9.0 58159 -104.8 -9.2 58160 -104.6 -9.3 58161 -104.1 -9.4 58162 -103.6 -9.5 58163 -103.3 -9.5 58164 -103.1 -9.4 58165 -103.0 -9.3 58166 -103.0 -9.2 58167 -103.2 -9.3 58168 -103.3 -9.4 58169 -103.5 -9.5 58170 -103.5 -9.6 58171 -103.5 -9.7 58172 -103.6 -9.7 58173 -103.8 -9.7 58174 -104.1 -9.8 58175 -104.3 -9.9 58176 -104.3 -10.1 58177 -104.0 -10.1 58178 -103.5 -10.1 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 58151 0.14 -0.26 58152 0.13 -0.27 58153 0.12 -0.27 58154 0.11 -0.27 58155 0.10 -0.27 58156 0.09 -0.27 58157 0.08 -0.26 58158 0.06 -0.26 58159 0.08 -0.27 58160 0.11 -0.29 58161 0.14 -0.31 58162 0.17 -0.33 58163 0.17 -0.32 58164 0.17 -0.31 58165 0.16 -0.29 58166 0.16 -0.29 58167 0.16 -0.29 58168 0.16 -0.29 58169 0.15 -0.30 58170 0.15 -0.29 58171 0.14 -0.29 58172 0.13 -0.29 58173 0.13 -0.28 58174 0.12 -0.26 58175 0.12 -0.24 58176 0.12 -0.22 58177 0.14 -0.20 58178 0.16 -0.17 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).