********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 8 March 2018 Vol. XXXI No. 010 ______________________________________________________________________ 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 30 Nov 2017 at 0000 UTC = +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 * * 22-March-2018. If the transition cannot be done by that date, * * alternative dates to implement the change could be 29-March-2018, * * 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 2 58179 0.00114 .00009 0.34379 .00009 0.165327 0.000024 18 3 3 58180 0.00271 .00009 0.34633 .00009 0.164031 0.000024 18 3 4 58181 0.00409 .00009 0.34902 .00009 0.162764 0.000021 18 3 5 58182 0.00539 .00009 0.35171 .00009 0.161557 0.000013 18 3 6 58183 0.00652 .00009 0.35429 .00009 0.160489 0.000011 18 3 7 58184 0.00723 .00009 0.35665 .00009 0.159536 0.000011 18 3 8 58185 0.00766 .00009 0.35876 .00009 0.158631 0.000010 _______________________________________________________________________ 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 = 0.1270 - 0.1373 cos A - 0.0075 sin A + 0.0146 cos C + 0.0153 sin C y = 0.3522 - 0.0077 cos A + 0.1295 sin A + 0.0153 cos C - 0.0146 sin C UT1-UTC = 0.1767 - 0.00090 (MJD - 58193) - (UT2-UT1) where A = 2*pi*(MJD-58185)/365.25 and C = 2*pi*(MJD-58185)/435. TAI-UTC(MJD 58186) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58185)**0.80 S t = 0.00025 (MJD-58185)**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 9 58186 0.0080 0.3607 0.15780 2018 3 10 58187 0.0084 0.3625 0.15707 2018 3 11 58188 0.0088 0.3643 0.15640 2018 3 12 58189 0.0091 0.3661 0.15577 2018 3 13 58190 0.0095 0.3679 0.15511 2018 3 14 58191 0.0098 0.3696 0.15439 2018 3 15 58192 0.0102 0.3713 0.15355 2018 3 16 58193 0.0106 0.3730 0.15257 2018 3 17 58194 0.0109 0.3746 0.15145 2018 3 18 58195 0.0113 0.3763 0.15019 2018 3 19 58196 0.0116 0.3779 0.14883 2018 3 20 58197 0.0121 0.3795 0.14745 2018 3 21 58198 0.0125 0.3811 0.14611 2018 3 22 58199 0.0131 0.3827 0.14491 2018 3 23 58200 0.0136 0.3842 0.14383 2018 3 24 58201 0.0143 0.3858 0.14287 2018 3 25 58202 0.0149 0.3873 0.14197 2018 3 26 58203 0.0156 0.3889 0.14107 2018 3 27 58204 0.0162 0.3904 0.14010 2018 3 28 58205 0.0169 0.3919 0.13899 2018 3 29 58206 0.0176 0.3934 0.13773 2018 3 30 58207 0.0184 0.3949 0.13632 2018 3 31 58208 0.0192 0.3963 0.13481 2018 4 1 58209 0.0200 0.3978 0.13327 2018 4 2 58210 0.0208 0.3992 0.13177 2018 4 3 58211 0.0217 0.4006 0.13037 2018 4 4 58212 0.0226 0.4020 0.12908 2018 4 5 58213 0.0235 0.4034 0.12790 2018 4 6 58214 0.0244 0.4048 0.12681 2018 4 7 58215 0.0254 0.4062 0.12580 2018 4 8 58216 0.0264 0.4075 0.12483 2018 4 9 58217 0.0274 0.4089 0.12385 2018 4 10 58218 0.0284 0.4102 0.12284 2018 4 11 58219 0.0295 0.4115 0.12175 2018 4 12 58220 0.0306 0.4128 0.12055 2018 4 13 58221 0.0317 0.4140 0.11924 2018 4 14 58222 0.0329 0.4153 0.11782 2018 4 15 58223 0.0340 0.4165 0.11631 2018 4 16 58224 0.0352 0.4177 0.11477 2018 4 17 58225 0.0365 0.4189 0.11327 2018 4 18 58226 0.0377 0.4201 0.11189 2018 4 19 58227 0.0390 0.4212 0.11065 2018 4 20 58228 0.0403 0.4224 0.10955 2018 4 21 58229 0.0416 0.4235 0.10856 2018 4 22 58230 0.0429 0.4246 0.10761 2018 4 23 58231 0.0442 0.4257 0.10662 2018 4 24 58232 0.0456 0.4267 0.10556 2018 4 25 58233 0.0470 0.4278 0.10437 2018 4 26 58234 0.0484 0.4288 0.10308 2018 4 27 58235 0.0499 0.4298 0.10170 2018 4 28 58236 0.0513 0.4308 0.10032 2018 4 29 58237 0.0528 0.4317 0.09899 2018 4 30 58238 0.0543 0.4326 0.09776 2018 5 1 58239 0.0558 0.4335 0.09668 2018 5 2 58240 0.0573 0.4344 0.09574 2018 5 3 58241 0.0589 0.4353 0.09495 2018 5 4 58242 0.0604 0.4361 0.09426 2018 5 5 58243 0.0620 0.4369 0.09364 2018 5 6 58244 0.0636 0.4377 0.09304 2018 5 7 58245 0.0652 0.4385 0.09242 2018 5 8 58246 0.0668 0.4392 0.09172 2018 5 9 58247 0.0685 0.4399 0.09093 2018 5 10 58248 0.0701 0.4406 0.09002 2018 5 11 58249 0.0718 0.4413 0.08899 2018 5 12 58250 0.0735 0.4419 0.08784 2018 5 13 58251 0.0752 0.4425 0.08662 2018 5 14 58252 0.0769 0.4431 0.08539 2018 5 15 58253 0.0786 0.4437 0.08421 2018 5 16 58254 0.0803 0.4442 0.08316 2018 5 17 58255 0.0821 0.4447 0.08226 2018 5 18 58256 0.0838 0.4452 0.08149 2018 5 19 58257 0.0856 0.4457 0.08080 2018 5 20 58258 0.0873 0.4461 0.08011 2018 5 21 58259 0.0891 0.4465 0.07937 2018 5 22 58260 0.0909 0.4469 0.07855 2018 5 23 58261 0.0927 0.4473 0.07763 2018 5 24 58262 0.0945 0.4476 0.07666 2018 5 25 58263 0.0963 0.4479 0.07569 2018 5 26 58264 0.0981 0.4481 0.07476 2018 5 27 58265 0.0999 0.4484 0.07393 2018 5 28 58266 0.1017 0.4486 0.07325 2018 5 29 58267 0.1036 0.4488 0.07272 2018 5 30 58268 0.1054 0.4489 0.07234 2018 5 31 58269 0.1072 0.4491 0.07211 2018 6 1 58270 0.1091 0.4492 0.07197 2018 6 2 58271 0.1109 0.4492 0.07189 2018 6 3 58272 0.1127 0.4493 0.07182 2018 6 4 58273 0.1146 0.4493 0.07172 2018 6 5 58274 0.1164 0.4493 0.07154 2018 6 6 58275 0.1183 0.4493 0.07126 2018 6 7 58276 0.1201 0.4492 0.07087 2018 6 8 58277 0.1219 0.4491 0.07037 2018 6 9 58278 0.1238 0.4490 0.06978 2018 6 10 58279 0.1256 0.4488 0.06915 2018 6 11 58280 0.1275 0.4487 0.06853 2018 6 12 58281 0.1293 0.4485 0.06800 2018 6 13 58282 0.1311 0.4482 0.06760 2018 6 14 58283 0.1329 0.4480 0.06733 2018 6 15 58284 0.1348 0.4477 0.06716 2018 6 16 58285 0.1366 0.4474 0.06701 2018 6 17 58286 0.1384 0.4470 0.06681 2018 6 18 58287 0.1402 0.4466 0.06652 2018 6 19 58288 0.1420 0.4462 0.06613 2018 6 20 58289 0.1438 0.4458 0.06566 2018 6 21 58290 0.1455 0.4454 0.06519 2018 6 22 58291 0.1473 0.4449 0.06476 2018 6 23 58292 0.1491 0.4444 0.06444 2018 6 24 58293 0.1508 0.4438 0.06424 2018 6 25 58294 0.1526 0.4433 0.06423 2018 6 26 58295 0.1543 0.4427 0.06436 2018 6 27 58296 0.1560 0.4421 0.06463 2018 6 28 58297 0.1577 0.4414 0.06499 2018 6 29 58298 0.1594 0.4408 0.06541 2018 6 30 58299 0.1611 0.4401 0.06584 2018 7 1 58300 0.1628 0.4394 0.06623 2018 7 2 58301 0.1644 0.4386 0.06654 2018 7 3 58302 0.1661 0.4379 0.06675 2018 7 4 58303 0.1677 0.4371 0.06684 2018 7 5 58304 0.1693 0.4363 0.06682 2018 7 6 58305 0.1709 0.4354 0.06669 2018 7 7 58306 0.1725 0.4345 0.06650 2018 7 8 58307 0.1740 0.4337 0.06630 2018 7 9 58308 0.1756 0.4327 0.06612 2018 7 10 58309 0.1771 0.4318 0.06603 2018 7 11 58310 0.1786 0.4308 0.06605 2018 7 12 58311 0.1801 0.4299 0.06616 2018 7 13 58312 0.1816 0.4289 0.06630 2018 7 14 58313 0.1831 0.4278 0.06638 2018 7 15 58314 0.1845 0.4268 0.06636 2018 7 16 58315 0.1859 0.4257 0.06619 2018 7 17 58316 0.1873 0.4246 0.06591 2018 7 18 58317 0.1887 0.4235 0.06557 2018 7 19 58318 0.1901 0.4224 0.06526 2018 7 20 58319 0.1914 0.4212 0.06503 2018 7 21 58320 0.1927 0.4200 0.06493 2018 7 22 58321 0.1940 0.4188 0.06498 2018 7 23 58322 0.1953 0.4176 0.06517 2018 7 24 58323 0.1965 0.4164 0.06549 2018 7 25 58324 0.1977 0.4151 0.06589 2018 7 26 58325 0.1989 0.4138 0.06635 2018 7 27 58326 0.2001 0.4126 0.06681 2018 7 28 58327 0.2012 0.4112 0.06723 2018 7 29 58328 0.2023 0.4099 0.06757 2018 7 30 58329 0.2034 0.4086 0.06780 2018 7 31 58330 0.2045 0.4072 0.06790 2018 8 1 58331 0.2056 0.4058 0.06787 2018 8 2 58332 0.2066 0.4044 0.06774 2018 8 3 58333 0.2076 0.4030 0.06753 2018 8 4 58334 0.2085 0.4016 0.06730 2018 8 5 58335 0.2095 0.4002 0.06707 2018 8 6 58336 0.2104 0.3987 0.06690 2018 8 7 58337 0.2113 0.3973 0.06680 2018 8 8 58338 0.2121 0.3958 0.06679 2018 8 9 58339 0.2129 0.3943 0.06680 2018 8 10 58340 0.2137 0.3928 0.06678 2018 8 11 58341 0.2145 0.3913 0.06663 2018 8 12 58342 0.2152 0.3897 0.06632 2018 8 13 58343 0.2160 0.3882 0.06583 2018 8 14 58344 0.2166 0.3866 0.06523 2018 8 15 58345 0.2173 0.3851 0.06459 2018 8 16 58346 0.2179 0.3835 0.06401 2018 8 17 58347 0.2185 0.3819 0.06355 2018 8 18 58348 0.2191 0.3803 0.06323 2018 8 19 58349 0.2196 0.3787 0.06306 2018 8 20 58350 0.2201 0.3771 0.06302 2018 8 21 58351 0.2206 0.3755 0.06308 2018 8 22 58352 0.2210 0.3739 0.06318 2018 8 23 58353 0.2214 0.3723 0.06330 2018 8 24 58354 0.2218 0.3706 0.06336 2018 8 25 58355 0.2221 0.3690 0.06335 2018 8 26 58356 0.2224 0.3674 0.06321 2018 8 27 58357 0.2227 0.3657 0.06294 2018 8 28 58358 0.2230 0.3641 0.06253 2018 8 29 58359 0.2232 0.3624 0.06200 2018 8 30 58360 0.2234 0.3607 0.06139 2018 8 31 58361 0.2235 0.3591 0.06074 2018 9 1 58362 0.2237 0.3574 0.06010 2018 9 2 58363 0.2238 0.3558 0.05952 2018 9 3 58364 0.2238 0.3541 0.05903 2018 9 4 58365 0.2238 0.3524 0.05862 2018 9 5 58366 0.2238 0.3507 0.05827 2018 9 6 58367 0.2238 0.3491 0.05793 2018 9 7 58368 0.2237 0.3474 0.05751 2018 9 8 58369 0.2236 0.3457 0.05696 2018 9 9 58370 0.2235 0.3441 0.05625 2018 9 10 58371 0.2233 0.3424 0.05542 2018 9 11 58372 0.2232 0.3408 0.05454 2018 9 12 58373 0.2229 0.3391 0.05371 2018 9 13 58374 0.2227 0.3374 0.05301 2018 9 14 58375 0.2224 0.3358 0.05249 2018 9 15 58376 0.2221 0.3341 0.05215 2018 9 16 58377 0.2217 0.3325 0.05197 2018 9 17 58378 0.2213 0.3309 0.05188 2018 9 18 58379 0.2209 0.3292 0.05184 2018 9 19 58380 0.2205 0.3276 0.05178 2018 9 20 58381 0.2200 0.3260 0.05166 2018 9 21 58382 0.2195 0.3244 0.05141 2018 9 22 58383 0.2189 0.3228 0.05101 2018 9 23 58384 0.2184 0.3212 0.05043 2018 9 24 58385 0.2177 0.3196 0.04967 2018 9 25 58386 0.2171 0.3180 0.04875 2018 9 26 58387 0.2165 0.3165 0.04772 2018 9 27 58388 0.2158 0.3149 0.04663 2018 9 28 58389 0.2150 0.3134 0.04555 2018 9 29 58390 0.2143 0.3119 0.04452 2018 9 30 58391 0.2135 0.3103 0.04360 2018 10 1 58392 0.2127 0.3088 0.04276 2018 10 2 58393 0.2119 0.3073 0.04200 2018 10 3 58394 0.2110 0.3058 0.04126 2018 10 4 58395 0.2101 0.3044 0.04046 2018 10 5 58396 0.2092 0.3029 0.03954 2018 10 6 58397 0.2082 0.3015 0.03844 2018 10 7 58398 0.2072 0.3001 0.03715 2018 10 8 58399 0.2062 0.2986 0.03570 2018 10 9 58400 0.2052 0.2972 0.03419 2018 10 10 58401 0.2041 0.2959 0.03270 2018 10 11 58402 0.2031 0.2945 0.03131 2018 10 12 58403 0.2019 0.2932 0.03008 2018 10 13 58404 0.2008 0.2918 0.02901 2018 10 14 58405 0.1996 0.2905 0.02807 2018 10 15 58406 0.1985 0.2892 0.02721 2018 10 16 58407 0.1972 0.2879 0.02639 2018 10 17 58408 0.1960 0.2867 0.02552 2018 10 18 58409 0.1947 0.2854 0.02457 2018 10 19 58410 0.1935 0.2842 0.02346 2018 10 20 58411 0.1921 0.2830 0.02219 2018 10 21 58412 0.1908 0.2818 0.02079 2018 10 22 58413 0.1895 0.2807 0.01925 2018 10 23 58414 0.1881 0.2795 0.01757 2018 10 24 58415 0.1867 0.2784 0.01580 2018 10 25 58416 0.1853 0.2773 0.01395 2018 10 26 58417 0.1838 0.2763 0.01219 2018 10 27 58418 0.1824 0.2752 0.01056 2018 10 28 58419 0.1809 0.2742 0.00905 2018 10 29 58420 0.1794 0.2732 0.00762 2018 10 30 58421 0.1779 0.2722 0.00623 2018 10 31 58422 0.1763 0.2712 0.00477 2018 11 1 58423 0.1748 0.2703 0.00320 2018 11 2 58424 0.1732 0.2694 0.00152 2018 11 3 58425 0.1716 0.2685 -0.00033 2018 11 4 58426 0.1700 0.2676 -0.00226 2018 11 5 58427 0.1684 0.2668 -0.00421 2018 11 6 58428 0.1667 0.2660 -0.00609 2018 11 7 58429 0.1651 0.2652 -0.00788 2018 11 8 58430 0.1634 0.2644 -0.00954 2018 11 9 58431 0.1617 0.2637 -0.01106 2018 11 10 58432 0.1600 0.2630 -0.01239 2018 11 11 58433 0.1583 0.2623 -0.01351 2018 11 12 58434 0.1565 0.2616 -0.01455 2018 11 13 58435 0.1548 0.2610 -0.01552 2018 11 14 58436 0.1531 0.2604 -0.01650 2018 11 15 58437 0.1513 0.2598 -0.01764 2018 11 16 58438 0.1495 0.2593 -0.01899 2018 11 17 58439 0.1477 0.2587 -0.02050 2018 11 18 58440 0.1459 0.2582 -0.02215 2018 11 19 58441 0.1441 0.2578 -0.02394 2018 11 20 58442 0.1423 0.2573 -0.02575 2018 11 21 58443 0.1405 0.2569 -0.02756 2018 11 22 58444 0.1387 0.2565 -0.02936 2018 11 23 58445 0.1368 0.2562 -0.03105 2018 11 24 58446 0.1350 0.2559 -0.03255 2018 11 25 58447 0.1331 0.2556 -0.03392 2018 11 26 58448 0.1313 0.2553 -0.03516 2018 11 27 58449 0.1294 0.2550 -0.03637 2018 11 28 58450 0.1275 0.2548 -0.03769 2018 11 29 58451 0.1257 0.2546 -0.03912 2018 11 30 58452 0.1238 0.2545 -0.04061 2018 12 1 58453 0.1219 0.2543 -0.04219 2018 12 2 58454 0.1201 0.2542 -0.04388 2018 12 3 58455 0.1182 0.2542 -0.04558 2018 12 4 58456 0.1163 0.2541 -0.04719 2018 12 5 58457 0.1144 0.2541 -0.04865 2018 12 6 58458 0.1125 0.2541 -0.04992 2018 12 7 58459 0.1106 0.2542 -0.05098 2018 12 8 58460 0.1088 0.2543 -0.05190 2018 12 9 58461 0.1069 0.2544 -0.05273 2018 12 10 58462 0.1050 0.2545 -0.05352 2018 12 11 58463 0.1031 0.2546 -0.05420 2018 12 12 58464 0.1013 0.2548 -0.05496 2018 12 13 58465 0.0994 0.2551 -0.05586 2018 12 14 58466 0.0975 0.2553 -0.05686 2018 12 15 58467 0.0957 0.2556 -0.05806 2018 12 16 58468 0.0938 0.2559 -0.05938 2018 12 17 58469 0.0920 0.2562 -0.06078 2018 12 18 58470 0.0901 0.2566 -0.06228 2018 12 19 58471 0.0883 0.2570 -0.06385 2018 12 20 58472 0.0865 0.2574 -0.06535 2018 12 21 58473 0.0847 0.2578 -0.06676 2018 12 22 58474 0.0828 0.2583 -0.06810 2018 12 23 58475 0.0810 0.2588 -0.06939 2018 12 24 58476 0.0793 0.2593 -0.07071 2018 12 25 58477 0.0775 0.2599 -0.07209 2018 12 26 58478 0.0757 0.2605 -0.07358 2018 12 27 58479 0.0740 0.2611 -0.07524 2018 12 28 58480 0.0722 0.2617 -0.07707 2018 12 29 58481 0.0705 0.2624 -0.07897 2018 12 30 58482 0.0688 0.2631 -0.08084 2018 12 31 58483 0.0670 0.2638 -0.08258 2019 1 1 58484 0.0654 0.2645 -0.08415 2019 1 2 58485 0.0637 0.2653 -0.08547 2019 1 3 58486 0.0620 0.2661 -0.08661 2019 1 4 58487 0.0604 0.2669 -0.08769 2019 1 5 58488 0.0587 0.2678 -0.08867 2019 1 6 58489 0.0571 0.2686 -0.08958 2019 1 7 58490 0.0555 0.2695 -0.09045 2019 1 8 58491 0.0539 0.2704 -0.09130 2019 1 9 58492 0.0524 0.2714 -0.09219 2019 1 10 58493 0.0508 0.2724 -0.09316 2019 1 11 58494 0.0493 0.2733 -0.09426 2019 1 12 58495 0.0478 0.2744 -0.09553 2019 1 13 58496 0.0463 0.2754 -0.09695 2019 1 14 58497 0.0448 0.2765 -0.09845 2019 1 15 58498 0.0434 0.2775 -0.09991 2019 1 16 58499 0.0420 0.2787 -0.10135 2019 1 17 58500 0.0406 0.2798 -0.10275 2019 1 18 58501 0.0392 0.2809 -0.10403 2019 1 19 58502 0.0378 0.2821 -0.10520 2019 1 20 58503 0.0365 0.2833 -0.10630 2019 1 21 58504 0.0352 0.2845 -0.10738 2019 1 22 58505 0.0339 0.2857 -0.10854 2019 1 23 58506 0.0326 0.2870 -0.10997 2019 1 24 58507 0.0314 0.2883 -0.11161 2019 1 25 58508 0.0301 0.2896 -0.11330 2019 1 26 58509 0.0290 0.2909 -0.11496 2019 1 27 58510 0.0278 0.2922 -0.11653 2019 1 28 58511 0.0266 0.2936 -0.11800 2019 1 29 58512 0.0255 0.2949 -0.11932 2019 1 30 58513 0.0244 0.2963 -0.12045 2019 1 31 58514 0.0234 0.2977 -0.12141 2019 2 1 58515 0.0223 0.2991 -0.12230 2019 2 2 58516 0.0213 0.3005 -0.12316 2019 2 3 58517 0.0204 0.3020 -0.12411 2019 2 4 58518 0.0194 0.3035 -0.12509 2019 2 5 58519 0.0185 0.3049 -0.12615 2019 2 6 58520 0.0176 0.3064 -0.12731 2019 2 7 58521 0.0167 0.3079 -0.12858 2019 2 8 58522 0.0159 0.3094 -0.12994 2019 2 9 58523 0.0151 0.3110 -0.13138 2019 2 10 58524 0.0143 0.3125 -0.13298 2019 2 11 58525 0.0135 0.3141 -0.13464 2019 2 12 58526 0.0128 0.3156 -0.13630 2019 2 13 58527 0.0121 0.3172 -0.13786 2019 2 14 58528 0.0115 0.3188 -0.13926 2019 2 15 58529 0.0108 0.3204 -0.14056 2019 2 16 58530 0.0102 0.3220 -0.14178 2019 2 17 58531 0.0097 0.3236 -0.14292 2019 2 18 58532 0.0091 0.3253 -0.14404 2019 2 19 58533 0.0086 0.3269 -0.14530 2019 2 20 58534 0.0082 0.3285 -0.14681 2019 2 21 58535 0.0077 0.3302 -0.14854 2019 2 22 58536 0.0073 0.3318 -0.15037 2019 2 23 58537 0.0069 0.3335 -0.15215 2019 2 24 58538 0.0066 0.3352 -0.15376 2019 2 25 58539 0.0063 0.3368 -0.15521 2019 2 26 58540 0.0060 0.3385 -0.15645 2019 2 27 58541 0.0058 0.3402 -0.15755 2019 2 28 58542 0.0055 0.3419 -0.15855 2019 3 1 58543 0.0054 0.3436 -0.15943 2019 3 2 58544 0.0052 0.3453 -0.16029 2019 3 3 58545 0.0051 0.3470 -0.16119 2019 3 4 58546 0.0050 0.3487 -0.16214 2019 3 5 58547 0.0050 0.3504 -0.16316 2019 3 6 58548 0.0049 0.3521 -0.16434 2019 3 7 58549 0.0050 0.3538 -0.16566 2019 3 8 58550 0.0050 0.3555 -0.16709 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) 58163 -103.44 0.12 -9.44 0.02 58164 -103.27 0.12 -9.38 0.02 58165 -103.18 0.12 -9.32 0.02 58166 -103.20 0.18 -9.28 0.02 58167 -103.36 0.16 -9.29 0.02 58168 -103.55 0.16 -9.37 0.02 58169 -103.67 0.30 -9.50 0.15 58170 -103.71 0.30 -9.62 0.15 58171 -103.71 0.30 -9.67 0.15 58172 -103.76 0.30 -9.67 0.15 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58163 0.127 0.048 -0.334 0.020 58164 0.126 0.048 -0.334 0.020 58165 0.115 0.048 -0.360 0.020 58166 0.098 0.072 -0.368 0.020 58167 0.082 0.064 -0.352 0.020 58168 0.080 0.064 -0.334 0.020 58169 0.079 0.119 -0.329 0.150 58170 0.071 0.119 -0.327 0.150 58171 0.074 0.119 -0.317 0.150 58172 0.086 0.119 -0.316 0.150 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).