********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 15 March 2018 Vol. XXXI No. 011 ______________________________________________________________________ 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 * * * * It is anticipated that the IERS RS/PC will transition its EOP * * solution to be consistent with the 14 C04 EOP system on * * 29-March-2018. If the transition cannot be done by that date, * * the alternative date to implement the change could be * * 05-April-2018. * * * * 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 9 58186 0.00803 .00009 0.36036 .00009 0.157823 0.000011 18 3 10 58187 0.00857 .00009 0.36159 .00009 0.157100 0.000006 18 3 11 58188 0.00974 .00009 0.36269 .00009 0.156399 0.000004 18 3 12 58189 0.01137 .00009 0.36401 .00009 0.155694 0.000003 18 3 13 58190 0.01283 .00009 0.36560 .00009 0.154949 0.000065 18 3 14 58191 0.01385 .00009 0.36737 .00009 0.154118 0.000065 18 3 15 58192 0.01450 .00009 0.36927 .00009 0.153196 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 = 0.1293 - 0.1382 cos A + 0.0139 sin A + 0.0200 cos C + 0.0105 sin C y = 0.3469 + 0.0122 cos A + 0.1314 sin A + 0.0105 cos C - 0.0200 sin C UT1-UTC = 0.1745 - 0.00089 (MJD - 58200) - (UT2-UT1) where A = 2*pi*(MJD-58192)/365.25 and C = 2*pi*(MJD-58192)/435. TAI-UTC(MJD 58193) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58192)**0.80 S t = 0.00025 (MJD-58192)**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 3 16 58193 0.0150 0.3712 0.15216 2018 3 17 58194 0.0152 0.3730 0.15104 2018 3 18 58195 0.0155 0.3747 0.14985 2018 3 19 58196 0.0158 0.3762 0.14864 2018 3 20 58197 0.0162 0.3777 0.14745 2018 3 21 58198 0.0168 0.3792 0.14631 2018 3 22 58199 0.0174 0.3807 0.14526 2018 3 23 58200 0.0181 0.3822 0.14432 2018 3 24 58201 0.0188 0.3837 0.14349 2018 3 25 58202 0.0195 0.3852 0.14272 2018 3 26 58203 0.0202 0.3867 0.14192 2018 3 27 58204 0.0210 0.3882 0.14099 2018 3 28 58205 0.0216 0.3897 0.13987 2018 3 29 58206 0.0223 0.3911 0.13858 2018 3 30 58207 0.0231 0.3925 0.13715 2018 3 31 58208 0.0238 0.3938 0.13566 2018 4 1 58209 0.0247 0.3951 0.13421 2018 4 2 58210 0.0255 0.3964 0.13285 2018 4 3 58211 0.0264 0.3977 0.13163 2018 4 4 58212 0.0273 0.3991 0.13058 2018 4 5 58213 0.0282 0.4004 0.12967 2018 4 6 58214 0.0292 0.4018 0.12889 2018 4 7 58215 0.0301 0.4031 0.12820 2018 4 8 58216 0.0310 0.4044 0.12755 2018 4 9 58217 0.0320 0.4056 0.12688 2018 4 10 58218 0.0330 0.4069 0.12614 2018 4 11 58219 0.0340 0.4081 0.12527 2018 4 12 58220 0.0350 0.4093 0.12425 2018 4 13 58221 0.0361 0.4105 0.12307 2018 4 14 58222 0.0372 0.4117 0.12171 2018 4 15 58223 0.0383 0.4128 0.12021 2018 4 16 58224 0.0394 0.4140 0.11863 2018 4 17 58225 0.0406 0.4151 0.11704 2018 4 18 58226 0.0418 0.4162 0.11553 2018 4 19 58227 0.0430 0.4173 0.11414 2018 4 20 58228 0.0442 0.4184 0.11290 2018 4 21 58229 0.0454 0.4194 0.11177 2018 4 22 58230 0.0467 0.4204 0.11070 2018 4 23 58231 0.0479 0.4214 0.10962 2018 4 24 58232 0.0492 0.4224 0.10848 2018 4 25 58233 0.0506 0.4234 0.10724 2018 4 26 58234 0.0519 0.4244 0.10591 2018 4 27 58235 0.0532 0.4253 0.10454 2018 4 28 58236 0.0546 0.4262 0.10316 2018 4 29 58237 0.0560 0.4271 0.10186 2018 4 30 58238 0.0574 0.4280 0.10069 2018 5 1 58239 0.0588 0.4288 0.09967 2018 5 2 58240 0.0603 0.4297 0.09880 2018 5 3 58241 0.0617 0.4305 0.09808 2018 5 4 58242 0.0632 0.4312 0.09748 2018 5 5 58243 0.0647 0.4320 0.09695 2018 5 6 58244 0.0662 0.4327 0.09645 2018 5 7 58245 0.0677 0.4335 0.09593 2018 5 8 58246 0.0692 0.4341 0.09534 2018 5 9 58247 0.0707 0.4348 0.09465 2018 5 10 58248 0.0723 0.4355 0.09383 2018 5 11 58249 0.0739 0.4361 0.09288 2018 5 12 58250 0.0754 0.4367 0.09180 2018 5 13 58251 0.0770 0.4372 0.09064 2018 5 14 58252 0.0786 0.4378 0.08946 2018 5 15 58253 0.0803 0.4383 0.08832 2018 5 16 58254 0.0819 0.4388 0.08730 2018 5 17 58255 0.0835 0.4393 0.08643 2018 5 18 58256 0.0852 0.4397 0.08568 2018 5 19 58257 0.0868 0.4402 0.08501 2018 5 20 58258 0.0885 0.4406 0.08434 2018 5 21 58259 0.0901 0.4409 0.08362 2018 5 22 58260 0.0918 0.4413 0.08281 2018 5 23 58261 0.0935 0.4416 0.08191 2018 5 24 58262 0.0952 0.4419 0.08095 2018 5 25 58263 0.0969 0.4422 0.07998 2018 5 26 58264 0.0986 0.4424 0.07906 2018 5 27 58265 0.1003 0.4426 0.07824 2018 5 28 58266 0.1020 0.4428 0.07756 2018 5 29 58267 0.1037 0.4430 0.07704 2018 5 30 58268 0.1054 0.4431 0.07667 2018 5 31 58269 0.1071 0.4433 0.07644 2018 6 1 58270 0.1089 0.4433 0.07631 2018 6 2 58271 0.1106 0.4434 0.07623 2018 6 3 58272 0.1123 0.4434 0.07616 2018 6 4 58273 0.1141 0.4435 0.07605 2018 6 5 58274 0.1158 0.4434 0.07586 2018 6 6 58275 0.1175 0.4434 0.07555 2018 6 7 58276 0.1192 0.4433 0.07513 2018 6 8 58277 0.1210 0.4432 0.07460 2018 6 9 58278 0.1227 0.4431 0.07398 2018 6 10 58279 0.1244 0.4430 0.07331 2018 6 11 58280 0.1261 0.4428 0.07266 2018 6 12 58281 0.1279 0.4426 0.07210 2018 6 13 58282 0.1296 0.4424 0.07168 2018 6 14 58283 0.1313 0.4421 0.07140 2018 6 15 58284 0.1330 0.4418 0.07123 2018 6 16 58285 0.1347 0.4415 0.07108 2018 6 17 58286 0.1364 0.4412 0.07089 2018 6 18 58287 0.1381 0.4408 0.07061 2018 6 19 58288 0.1397 0.4404 0.07023 2018 6 20 58289 0.1414 0.4400 0.06978 2018 6 21 58290 0.1431 0.4396 0.06932 2018 6 22 58291 0.1447 0.4391 0.06890 2018 6 23 58292 0.1464 0.4387 0.06859 2018 6 24 58293 0.1480 0.4381 0.06841 2018 6 25 58294 0.1497 0.4376 0.06837 2018 6 26 58295 0.1513 0.4370 0.06849 2018 6 27 58296 0.1529 0.4365 0.06874 2018 6 28 58297 0.1545 0.4359 0.06908 2018 6 29 58298 0.1561 0.4352 0.06949 2018 6 30 58299 0.1577 0.4346 0.06990 2018 7 1 58300 0.1592 0.4339 0.07027 2018 7 2 58301 0.1608 0.4332 0.07061 2018 7 3 58302 0.1623 0.4324 0.07084 2018 7 4 58303 0.1638 0.4317 0.07095 2018 7 5 58304 0.1653 0.4309 0.07094 2018 7 6 58305 0.1668 0.4301 0.07083 2018 7 7 58306 0.1683 0.4293 0.07066 2018 7 8 58307 0.1698 0.4284 0.07047 2018 7 9 58308 0.1712 0.4276 0.07032 2018 7 10 58309 0.1727 0.4267 0.07026 2018 7 11 58310 0.1741 0.4258 0.07030 2018 7 12 58311 0.1755 0.4248 0.07044 2018 7 13 58312 0.1768 0.4239 0.07061 2018 7 14 58313 0.1782 0.4229 0.07073 2018 7 15 58314 0.1795 0.4219 0.07074 2018 7 16 58315 0.1809 0.4209 0.07061 2018 7 17 58316 0.1822 0.4199 0.07036 2018 7 18 58317 0.1834 0.4188 0.07007 2018 7 19 58318 0.1847 0.4177 0.06980 2018 7 20 58319 0.1860 0.4166 0.06961 2018 7 21 58320 0.1872 0.4155 0.06956 2018 7 22 58321 0.1884 0.4144 0.06965 2018 7 23 58322 0.1895 0.4133 0.06989 2018 7 24 58323 0.1907 0.4121 0.07024 2018 7 25 58324 0.1918 0.4109 0.07069 2018 7 26 58325 0.1929 0.4097 0.07119 2018 7 27 58326 0.1940 0.4085 0.07169 2018 7 28 58327 0.1951 0.4072 0.07214 2018 7 29 58328 0.1961 0.4060 0.07252 2018 7 30 58329 0.1972 0.4047 0.07278 2018 7 31 58330 0.1981 0.4034 0.07291 2018 8 1 58331 0.1991 0.4021 0.07291 2018 8 2 58332 0.2001 0.4008 0.07280 2018 8 3 58333 0.2010 0.3995 0.07261 2018 8 4 58334 0.2019 0.3982 0.07239 2018 8 5 58335 0.2027 0.3968 0.07218 2018 8 6 58336 0.2036 0.3954 0.07202 2018 8 7 58337 0.2044 0.3941 0.07193 2018 8 8 58338 0.2052 0.3927 0.07193 2018 8 9 58339 0.2059 0.3913 0.07195 2018 8 10 58340 0.2066 0.3898 0.07193 2018 8 11 58341 0.2074 0.3884 0.07180 2018 8 12 58342 0.2080 0.3870 0.07150 2018 8 13 58343 0.2087 0.3855 0.07102 2018 8 14 58344 0.2093 0.3841 0.07044 2018 8 15 58345 0.2099 0.3826 0.06982 2018 8 16 58346 0.2105 0.3811 0.06926 2018 8 17 58347 0.2110 0.3797 0.06882 2018 8 18 58348 0.2115 0.3782 0.06853 2018 8 19 58349 0.2120 0.3767 0.06839 2018 8 20 58350 0.2124 0.3752 0.06839 2018 8 21 58351 0.2128 0.3736 0.06848 2018 8 22 58352 0.2132 0.3721 0.06863 2018 8 23 58353 0.2136 0.3706 0.06878 2018 8 24 58354 0.2139 0.3691 0.06888 2018 8 25 58355 0.2142 0.3675 0.06890 2018 8 26 58356 0.2145 0.3660 0.06880 2018 8 27 58357 0.2148 0.3644 0.06857 2018 8 28 58358 0.2150 0.3629 0.06819 2018 8 29 58359 0.2152 0.3613 0.06769 2018 8 30 58360 0.2153 0.3598 0.06710 2018 8 31 58361 0.2154 0.3582 0.06647 2018 9 1 58362 0.2155 0.3567 0.06584 2018 9 2 58363 0.2156 0.3551 0.06526 2018 9 3 58364 0.2156 0.3536 0.06476 2018 9 4 58365 0.2156 0.3520 0.06433 2018 9 5 58366 0.2156 0.3504 0.06393 2018 9 6 58367 0.2155 0.3489 0.06352 2018 9 7 58368 0.2155 0.3473 0.06302 2018 9 8 58369 0.2153 0.3458 0.06235 2018 9 9 58370 0.2152 0.3442 0.06149 2018 9 10 58371 0.2150 0.3427 0.06047 2018 9 11 58372 0.2148 0.3411 0.05936 2018 9 12 58373 0.2146 0.3396 0.05826 2018 9 13 58374 0.2143 0.3380 0.05727 2018 9 14 58375 0.2140 0.3365 0.05645 2018 9 15 58376 0.2137 0.3350 0.05581 2018 9 16 58377 0.2133 0.3334 0.05536 2018 9 17 58378 0.2129 0.3319 0.05507 2018 9 18 58379 0.2125 0.3304 0.05489 2018 9 19 58380 0.2121 0.3289 0.05477 2018 9 20 58381 0.2116 0.3274 0.05466 2018 9 21 58382 0.2111 0.3259 0.05450 2018 9 22 58383 0.2106 0.3244 0.05425 2018 9 23 58384 0.2100 0.3229 0.05387 2018 9 24 58385 0.2094 0.3215 0.05333 2018 9 25 58386 0.2088 0.3200 0.05264 2018 9 26 58387 0.2081 0.3185 0.05182 2018 9 27 58388 0.2075 0.3171 0.05093 2018 9 28 58389 0.2068 0.3157 0.05001 2018 9 29 58390 0.2060 0.3143 0.04913 2018 9 30 58391 0.2053 0.3129 0.04830 2018 10 1 58392 0.2045 0.3115 0.04753 2018 10 2 58393 0.2037 0.3101 0.04679 2018 10 3 58394 0.2028 0.3087 0.04603 2018 10 4 58395 0.2020 0.3073 0.04521 2018 10 5 58396 0.2011 0.3060 0.04424 2018 10 6 58397 0.2002 0.3047 0.04309 2018 10 7 58398 0.1992 0.3034 0.04176 2018 10 8 58399 0.1982 0.3021 0.04030 2018 10 9 58400 0.1972 0.3008 0.03879 2018 10 10 58401 0.1962 0.2995 0.03733 2018 10 11 58402 0.1952 0.2983 0.03598 2018 10 12 58403 0.1941 0.2970 0.03480 2018 10 13 58404 0.1930 0.2958 0.03380 2018 10 14 58405 0.1919 0.2946 0.03295 2018 10 15 58406 0.1908 0.2934 0.03222 2018 10 16 58407 0.1896 0.2922 0.03156 2018 10 17 58408 0.1884 0.2911 0.03093 2018 10 18 58409 0.1872 0.2899 0.03025 2018 10 19 58410 0.1860 0.2888 0.02947 2018 10 20 58411 0.1847 0.2877 0.02857 2018 10 21 58412 0.1834 0.2867 0.02753 2018 10 22 58413 0.1822 0.2856 0.02634 2018 10 23 58414 0.1808 0.2846 0.02499 2018 10 24 58415 0.1795 0.2836 0.02357 2018 10 25 58416 0.1782 0.2826 0.02215 2018 10 26 58417 0.1768 0.2816 0.02074 2018 10 27 58418 0.1754 0.2806 0.01946 2018 10 28 58419 0.1740 0.2797 0.01826 2018 10 29 58420 0.1725 0.2788 0.01714 2018 10 30 58421 0.1711 0.2779 0.01605 2018 10 31 58422 0.1696 0.2770 0.01490 2018 11 1 58423 0.1681 0.2762 0.01362 2018 11 2 58424 0.1667 0.2754 0.01212 2018 11 3 58425 0.1651 0.2746 0.01044 2018 11 4 58426 0.1636 0.2738 0.00862 2018 11 5 58427 0.1621 0.2731 0.00672 2018 11 6 58428 0.1605 0.2723 0.00480 2018 11 7 58429 0.1589 0.2716 0.00295 2018 11 8 58430 0.1573 0.2710 0.00118 2018 11 9 58431 0.1557 0.2703 -0.00039 2018 11 10 58432 0.1541 0.2697 -0.00176 2018 11 11 58433 0.1525 0.2691 -0.00300 2018 11 12 58434 0.1509 0.2685 -0.00416 2018 11 13 58435 0.1492 0.2680 -0.00530 2018 11 14 58436 0.1476 0.2674 -0.00651 2018 11 15 58437 0.1459 0.2669 -0.00779 2018 11 16 58438 0.1442 0.2665 -0.00915 2018 11 17 58439 0.1425 0.2660 -0.01063 2018 11 18 58440 0.1408 0.2656 -0.01219 2018 11 19 58441 0.1391 0.2652 -0.01380 2018 11 20 58442 0.1374 0.2648 -0.01544 2018 11 21 58443 0.1357 0.2645 -0.01710 2018 11 22 58444 0.1340 0.2642 -0.01876 2018 11 23 58445 0.1322 0.2639 -0.02036 2018 11 24 58446 0.1305 0.2636 -0.02182 2018 11 25 58447 0.1288 0.2634 -0.02307 2018 11 26 58448 0.1270 0.2632 -0.02426 2018 11 27 58449 0.1253 0.2630 -0.02539 2018 11 28 58450 0.1235 0.2628 -0.02659 2018 11 29 58451 0.1217 0.2627 -0.02799 2018 11 30 58452 0.1200 0.2626 -0.02964 2018 12 1 58453 0.1182 0.2625 -0.03145 2018 12 2 58454 0.1164 0.2625 -0.03336 2018 12 3 58455 0.1147 0.2625 -0.03528 2018 12 4 58456 0.1129 0.2625 -0.03707 2018 12 5 58457 0.1111 0.2625 -0.03870 2018 12 6 58458 0.1094 0.2626 -0.04018 2018 12 7 58459 0.1076 0.2627 -0.04147 2018 12 8 58460 0.1059 0.2628 -0.04255 2018 12 9 58461 0.1041 0.2629 -0.04352 2018 12 10 58462 0.1023 0.2631 -0.04439 2018 12 11 58463 0.1006 0.2633 -0.04522 2018 12 12 58464 0.0988 0.2635 -0.04616 2018 12 13 58465 0.0971 0.2638 -0.04717 2018 12 14 58466 0.0953 0.2641 -0.04821 2018 12 15 58467 0.0936 0.2644 -0.04934 2018 12 16 58468 0.0919 0.2647 -0.05061 2018 12 17 58469 0.0901 0.2651 -0.05200 2018 12 18 58470 0.0884 0.2655 -0.05341 2018 12 19 58471 0.0867 0.2659 -0.05482 2018 12 20 58472 0.0850 0.2663 -0.05615 2018 12 21 58473 0.0833 0.2668 -0.05734 2018 12 22 58474 0.0816 0.2673 -0.05842 2018 12 23 58475 0.0800 0.2678 -0.05942 2018 12 24 58476 0.0783 0.2683 -0.06040 2018 12 25 58477 0.0766 0.2689 -0.06132 2018 12 26 58478 0.0750 0.2695 -0.06240 2018 12 27 58479 0.0734 0.2701 -0.06369 2018 12 28 58480 0.0717 0.2708 -0.06511 2018 12 29 58481 0.0701 0.2714 -0.06667 2018 12 30 58482 0.0685 0.2721 -0.06825 2018 12 31 58483 0.0670 0.2729 -0.06976 2019 1 1 58484 0.0654 0.2736 -0.07118 2019 1 2 58485 0.0638 0.2744 -0.07249 2019 1 3 58486 0.0623 0.2752 -0.07364 2019 1 4 58487 0.0608 0.2760 -0.07465 2019 1 5 58488 0.0593 0.2768 -0.07560 2019 1 6 58489 0.0578 0.2777 -0.07653 2019 1 7 58490 0.0563 0.2786 -0.07751 2019 1 8 58491 0.0548 0.2795 -0.07854 2019 1 9 58492 0.0534 0.2804 -0.07964 2019 1 10 58493 0.0520 0.2814 -0.08087 2019 1 11 58494 0.0506 0.2823 -0.08225 2019 1 12 58495 0.0492 0.2833 -0.08373 2019 1 13 58496 0.0478 0.2844 -0.08529 2019 1 14 58497 0.0465 0.2854 -0.08686 2019 1 15 58498 0.0451 0.2865 -0.08840 2019 1 16 58499 0.0438 0.2875 -0.08984 2019 1 17 58500 0.0426 0.2886 -0.09120 2019 1 18 58501 0.0413 0.2898 -0.09254 2019 1 19 58502 0.0401 0.2909 -0.09381 2019 1 20 58503 0.0388 0.2921 -0.09503 2019 1 21 58504 0.0376 0.2933 -0.09626 2019 1 22 58505 0.0365 0.2944 -0.09755 2019 1 23 58506 0.0353 0.2957 -0.09898 2019 1 24 58507 0.0342 0.2969 -0.10057 2019 1 25 58508 0.0331 0.2981 -0.10229 2019 1 26 58509 0.0320 0.2994 -0.10410 2019 1 27 58510 0.0310 0.3007 -0.10591 2019 1 28 58511 0.0299 0.3020 -0.10761 2019 1 29 58512 0.0289 0.3033 -0.10907 2019 1 30 58513 0.0279 0.3046 -0.11035 2019 1 31 58514 0.0270 0.3060 -0.11152 2019 2 1 58515 0.0261 0.3074 -0.11254 2019 2 2 58516 0.0252 0.3087 -0.11347 2019 2 3 58517 0.0243 0.3101 -0.11435 2019 2 4 58518 0.0234 0.3115 -0.11522 2019 2 5 58519 0.0226 0.3129 -0.11611 2019 2 6 58520 0.0218 0.3144 -0.11721 2019 2 7 58521 0.0211 0.3158 -0.11846 2019 2 8 58522 0.0203 0.3173 -0.11977 2019 2 9 58523 0.0196 0.3187 -0.12111 2019 2 10 58524 0.0190 0.3202 -0.12249 2019 2 11 58525 0.0183 0.3217 -0.12393 2019 2 12 58526 0.0177 0.3232 -0.12538 2019 2 13 58527 0.0171 0.3247 -0.12676 2019 2 14 58528 0.0165 0.3262 -0.12805 2019 2 15 58529 0.0160 0.3277 -0.12930 2019 2 16 58530 0.0155 0.3293 -0.13054 2019 2 17 58531 0.0150 0.3308 -0.13190 2019 2 18 58532 0.0146 0.3323 -0.13335 2019 2 19 58533 0.0142 0.3339 -0.13499 2019 2 20 58534 0.0138 0.3355 -0.13685 2019 2 21 58535 0.0134 0.3370 -0.13887 2019 2 22 58536 0.0131 0.3386 -0.14098 2019 2 23 58537 0.0128 0.3402 -0.14305 2019 2 24 58538 0.0125 0.3417 -0.14510 2019 2 25 58539 0.0123 0.3433 -0.14701 2019 2 26 58540 0.0121 0.3449 -0.14873 2019 2 27 58541 0.0119 0.3465 -0.15021 2019 2 28 58542 0.0118 0.3481 -0.15148 2019 3 1 58543 0.0117 0.3497 -0.15265 2019 3 2 58544 0.0116 0.3513 -0.15374 2019 3 3 58545 0.0116 0.3529 -0.15477 2019 3 4 58546 0.0116 0.3545 -0.15574 2019 3 5 58547 0.0116 0.3561 -0.15676 2019 3 6 58548 0.0116 0.3577 -0.15795 2019 3 7 58549 0.0117 0.3593 -0.15929 2019 3 8 58550 0.0118 0.3609 -0.16073 2019 3 9 58551 0.0119 0.3625 -0.16222 2019 3 10 58552 0.0121 0.3641 -0.16367 2019 3 11 58553 0.0123 0.3656 -0.16512 2019 3 12 58554 0.0126 0.3672 -0.16650 2019 3 13 58555 0.0128 0.3688 -0.16783 2019 3 14 58556 0.0131 0.3704 -0.16911 2019 3 15 58557 0.0134 0.3720 -0.17029 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) 58173 -103.90 0.30 -9.68 0.02 58174 -104.16 0.30 -9.77 0.04 58175 -104.37 0.30 -9.95 0.04 58176 -104.36 0.30 -10.07 0.06 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58173 0.102 0.119 -0.312 0.020 58174 0.092 0.119 -0.293 0.040 58175 0.082 0.119 -0.280 0.040 58176 0.083 0.119 -0.246 0.060 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).