********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 1 March 2018 Vol. XXXI 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 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 * * 15-March-2018. If the transition cannot be done by that date, * * alternative dates to implement the change could be 22-March-2018, * * 29-March-2018, or 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 2 23 58172 0.00260 .00009 0.32932 .00009 0.171534 0.000013 18 2 24 58173 0.00242 .00009 0.33169 .00009 0.170622 0.000012 18 2 25 58174 0.00195 .00009 0.33393 .00009 0.169801 0.000014 18 2 26 58175 0.00123 .00009 0.33604 .00009 0.169027 0.000012 18 2 27 58176 0.00035 .00009 0.33795 .00009 0.168241 0.000011 18 2 28 58177 -.00025 .00009 0.33968 .00009 0.167361 0.000011 18 3 1 58178 -.00026 .00009 0.34149 .00009 0.166357 0.000055 IERS Final Values MJD x y UT1-UTC " " s 18 1 2 58120 0.0574 0.2486 0.21561 18 1 3 58121 0.0557 0.2495 0.21487 18 1 4 58122 0.0544 0.2504 0.21406 18 1 5 58123 0.0535 0.2516 0.21318 18 1 6 58124 0.0526 0.2529 0.21229 18 1 7 58125 0.0510 0.2542 0.21142 18 1 8 58126 0.0492 0.2550 0.21062 18 1 9 58127 0.0480 0.2558 0.20993 18 1 10 58128 0.0467 0.2571 0.20938 18 1 11 58129 0.0450 0.2586 0.20893 18 1 12 58130 0.0433 0.2599 0.20852 18 1 13 58131 0.0414 0.2606 0.20828 18 1 14 58132 0.0398 0.2608 0.20817 18 1 15 58133 0.0386 0.2612 0.20809 18 1 16 58134 0.0378 0.2619 0.20806 18 1 17 58135 0.0371 0.2632 0.20800 18 1 18 58136 0.0361 0.2650 0.20785 18 1 19 58137 0.0347 0.2668 0.20761 18 1 20 58138 0.0327 0.2686 0.20731 18 1 21 58139 0.0306 0.2703 0.20681 18 1 22 58140 0.0287 0.2721 0.20613 18 1 23 58141 0.0273 0.2737 0.20532 18 1 24 58142 0.0260 0.2755 0.20440 18 1 25 58143 0.0241 0.2774 0.20346 18 1 26 58144 0.0224 0.2791 0.20245 18 1 27 58145 0.0209 0.2806 0.20148 18 1 28 58146 0.0193 0.2818 0.20058 18 1 29 58147 0.0183 0.2829 0.19969 18 1 30 58148 0.0177 0.2845 0.19875 18 1 31 58149 0.0167 0.2862 0.19769 18 2 1 58150 0.0154 0.2883 0.19650 _______________________________________________________________________ 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 = 0.1205 - 0.1330 cos A - 0.0269 sin A + 0.0089 cos C + 0.0177 sin C y = 0.3512 - 0.0259 cos A + 0.1243 sin A + 0.0177 cos C - 0.0089 sin C UT1-UTC = 0.1809 - 0.00091 (MJD - 58186) - (UT2-UT1) where A = 2*pi*(MJD-58178)/365.25 and C = 2*pi*(MJD-58178)/435. TAI-UTC(MJD 58179) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58178)**0.80 S t = 0.00025 (MJD-58178)**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 2 58179 -0.0002 0.3434 0.16521 2018 3 3 58180 0.0000 0.3454 0.16398 2018 3 4 58181 0.0002 0.3475 0.16277 2018 3 5 58182 0.0003 0.3495 0.16163 2018 3 6 58183 0.0002 0.3514 0.16061 2018 3 7 58184 0.0002 0.3533 0.15971 2018 3 8 58185 0.0001 0.3551 0.15890 2018 3 9 58186 0.0002 0.3568 0.15822 2018 3 10 58187 0.0002 0.3586 0.15763 2018 3 11 58188 0.0004 0.3603 0.15715 2018 3 12 58189 0.0006 0.3620 0.15669 2018 3 13 58190 0.0008 0.3638 0.15618 2018 3 14 58191 0.0011 0.3655 0.15556 2018 3 15 58192 0.0014 0.3672 0.15481 2018 3 16 58193 0.0018 0.3689 0.15390 2018 3 17 58194 0.0021 0.3707 0.15282 2018 3 18 58195 0.0024 0.3724 0.15159 2018 3 19 58196 0.0028 0.3742 0.15025 2018 3 20 58197 0.0032 0.3759 0.14884 2018 3 21 58198 0.0036 0.3775 0.14743 2018 3 22 58199 0.0041 0.3792 0.14606 2018 3 23 58200 0.0046 0.3808 0.14477 2018 3 24 58201 0.0052 0.3825 0.14354 2018 3 25 58202 0.0058 0.3842 0.14233 2018 3 26 58203 0.0064 0.3858 0.14108 2018 3 27 58204 0.0070 0.3875 0.13973 2018 3 28 58205 0.0077 0.3891 0.13825 2018 3 29 58206 0.0084 0.3907 0.13663 2018 3 30 58207 0.0091 0.3923 0.13490 2018 3 31 58208 0.0099 0.3939 0.13311 2018 4 1 58209 0.0107 0.3955 0.13136 2018 4 2 58210 0.0115 0.3970 0.12972 2018 4 3 58211 0.0123 0.3986 0.12823 2018 4 4 58212 0.0132 0.4001 0.12692 2018 4 5 58213 0.0141 0.4017 0.12578 2018 4 6 58214 0.0150 0.4032 0.12479 2018 4 7 58215 0.0160 0.4047 0.12392 2018 4 8 58216 0.0170 0.4062 0.12311 2018 4 9 58217 0.0180 0.4076 0.12232 2018 4 10 58218 0.0191 0.4091 0.12147 2018 4 11 58219 0.0201 0.4105 0.12053 2018 4 12 58220 0.0212 0.4120 0.11947 2018 4 13 58221 0.0224 0.4134 0.11826 2018 4 14 58222 0.0235 0.4148 0.11691 2018 4 15 58223 0.0247 0.4161 0.11545 2018 4 16 58224 0.0259 0.4175 0.11393 2018 4 17 58225 0.0272 0.4188 0.11244 2018 4 18 58226 0.0284 0.4201 0.11103 2018 4 19 58227 0.0297 0.4214 0.10975 2018 4 20 58228 0.0310 0.4227 0.10859 2018 4 21 58229 0.0323 0.4240 0.10753 2018 4 22 58230 0.0337 0.4252 0.10650 2018 4 23 58231 0.0351 0.4264 0.10544 2018 4 24 58232 0.0365 0.4276 0.10427 2018 4 25 58233 0.0379 0.4288 0.10299 2018 4 26 58234 0.0394 0.4300 0.10158 2018 4 27 58235 0.0408 0.4311 0.10011 2018 4 28 58236 0.0423 0.4322 0.09862 2018 4 29 58237 0.0438 0.4333 0.09718 2018 4 30 58238 0.0454 0.4344 0.09587 2018 5 1 58239 0.0469 0.4354 0.09471 2018 5 2 58240 0.0485 0.4365 0.09371 2018 5 3 58241 0.0501 0.4375 0.09286 2018 5 4 58242 0.0517 0.4384 0.09212 2018 5 5 58243 0.0534 0.4394 0.09147 2018 5 6 58244 0.0550 0.4403 0.09085 2018 5 7 58245 0.0567 0.4412 0.09020 2018 5 8 58246 0.0584 0.4421 0.08949 2018 5 9 58247 0.0601 0.4430 0.08868 2018 5 10 58248 0.0618 0.4438 0.08775 2018 5 11 58249 0.0635 0.4446 0.08670 2018 5 12 58250 0.0653 0.4454 0.08554 2018 5 13 58251 0.0670 0.4461 0.08431 2018 5 14 58252 0.0688 0.4468 0.08307 2018 5 15 58253 0.0706 0.4475 0.08189 2018 5 16 58254 0.0724 0.4482 0.08083 2018 5 17 58255 0.0742 0.4488 0.07993 2018 5 18 58256 0.0760 0.4495 0.07915 2018 5 19 58257 0.0779 0.4500 0.07845 2018 5 20 58258 0.0797 0.4506 0.07776 2018 5 21 58259 0.0816 0.4511 0.07702 2018 5 22 58260 0.0834 0.4516 0.07619 2018 5 23 58261 0.0853 0.4521 0.07528 2018 5 24 58262 0.0872 0.4526 0.07432 2018 5 25 58263 0.0891 0.4530 0.07336 2018 5 26 58264 0.0910 0.4534 0.07245 2018 5 27 58265 0.0929 0.4537 0.07165 2018 5 28 58266 0.0948 0.4541 0.07100 2018 5 29 58267 0.0968 0.4544 0.07051 2018 5 30 58268 0.0987 0.4547 0.07017 2018 5 31 58269 0.1006 0.4549 0.06997 2018 6 1 58270 0.1026 0.4551 0.06987 2018 6 2 58271 0.1045 0.4553 0.06981 2018 6 3 58272 0.1065 0.4555 0.06976 2018 6 4 58273 0.1084 0.4556 0.06967 2018 6 5 58274 0.1104 0.4557 0.06949 2018 6 6 58275 0.1123 0.4558 0.06921 2018 6 7 58276 0.1143 0.4558 0.06881 2018 6 8 58277 0.1162 0.4558 0.06830 2018 6 9 58278 0.1182 0.4558 0.06770 2018 6 10 58279 0.1201 0.4558 0.06705 2018 6 11 58280 0.1221 0.4557 0.06642 2018 6 12 58281 0.1240 0.4556 0.06588 2018 6 13 58282 0.1260 0.4554 0.06546 2018 6 14 58283 0.1279 0.4553 0.06519 2018 6 15 58284 0.1299 0.4551 0.06501 2018 6 16 58285 0.1318 0.4549 0.06485 2018 6 17 58286 0.1337 0.4546 0.06465 2018 6 18 58287 0.1357 0.4543 0.06437 2018 6 19 58288 0.1376 0.4540 0.06400 2018 6 20 58289 0.1395 0.4537 0.06355 2018 6 21 58290 0.1414 0.4533 0.06308 2018 6 22 58291 0.1433 0.4529 0.06267 2018 6 23 58292 0.1452 0.4525 0.06235 2018 6 24 58293 0.1471 0.4520 0.06216 2018 6 25 58294 0.1490 0.4516 0.06212 2018 6 26 58295 0.1508 0.4510 0.06223 2018 6 27 58296 0.1527 0.4505 0.06247 2018 6 28 58297 0.1545 0.4499 0.06280 2018 6 29 58298 0.1564 0.4493 0.06319 2018 6 30 58299 0.1582 0.4487 0.06358 2018 7 1 58300 0.1600 0.4481 0.06394 2018 7 2 58301 0.1618 0.4474 0.06421 2018 7 3 58302 0.1636 0.4467 0.06438 2018 7 4 58303 0.1653 0.4460 0.06443 2018 7 5 58304 0.1671 0.4452 0.06436 2018 7 6 58305 0.1688 0.4444 0.06420 2018 7 7 58306 0.1706 0.4436 0.06397 2018 7 8 58307 0.1723 0.4428 0.06371 2018 7 9 58308 0.1740 0.4419 0.06350 2018 7 10 58309 0.1757 0.4410 0.06336 2018 7 11 58310 0.1773 0.4401 0.06334 2018 7 12 58311 0.1790 0.4392 0.06341 2018 7 13 58312 0.1806 0.4382 0.06351 2018 7 14 58313 0.1822 0.4372 0.06356 2018 7 15 58314 0.1838 0.4362 0.06350 2018 7 16 58315 0.1854 0.4352 0.06330 2018 7 17 58316 0.1869 0.4341 0.06298 2018 7 18 58317 0.1884 0.4330 0.06262 2018 7 19 58318 0.1899 0.4319 0.06229 2018 7 20 58319 0.1914 0.4308 0.06204 2018 7 21 58320 0.1929 0.4296 0.06192 2018 7 22 58321 0.1943 0.4284 0.06196 2018 7 23 58322 0.1958 0.4272 0.06214 2018 7 24 58323 0.1972 0.4260 0.06244 2018 7 25 58324 0.1985 0.4248 0.06284 2018 7 26 58325 0.1999 0.4235 0.06329 2018 7 27 58326 0.2012 0.4222 0.06374 2018 7 28 58327 0.2025 0.4209 0.06415 2018 7 29 58328 0.2038 0.4196 0.06448 2018 7 30 58329 0.2050 0.4183 0.06469 2018 7 31 58330 0.2063 0.4169 0.06477 2018 8 1 58331 0.2075 0.4156 0.06473 2018 8 2 58332 0.2086 0.4142 0.06457 2018 8 3 58333 0.2098 0.4127 0.06434 2018 8 4 58334 0.2109 0.4113 0.06408 2018 8 5 58335 0.2120 0.4099 0.06382 2018 8 6 58336 0.2131 0.4084 0.06361 2018 8 7 58337 0.2141 0.4069 0.06348 2018 8 8 58338 0.2151 0.4054 0.06342 2018 8 9 58339 0.2161 0.4039 0.06339 2018 8 10 58340 0.2170 0.4024 0.06332 2018 8 11 58341 0.2179 0.4009 0.06314 2018 8 12 58342 0.2188 0.3993 0.06278 2018 8 13 58343 0.2197 0.3977 0.06225 2018 8 14 58344 0.2205 0.3962 0.06160 2018 8 15 58345 0.2213 0.3946 0.06092 2018 8 16 58346 0.2221 0.3930 0.06030 2018 8 17 58347 0.2229 0.3913 0.05980 2018 8 18 58348 0.2236 0.3897 0.05944 2018 8 19 58349 0.2242 0.3881 0.05924 2018 8 20 58350 0.2249 0.3864 0.05917 2018 8 21 58351 0.2255 0.3848 0.05920 2018 8 22 58352 0.2261 0.3831 0.05929 2018 8 23 58353 0.2266 0.3814 0.05939 2018 8 24 58354 0.2272 0.3797 0.05946 2018 8 25 58355 0.2277 0.3780 0.05944 2018 8 26 58356 0.2281 0.3763 0.05933 2018 8 27 58357 0.2285 0.3746 0.05909 2018 8 28 58358 0.2289 0.3729 0.05872 2018 8 29 58359 0.2293 0.3712 0.05826 2018 8 30 58360 0.2296 0.3695 0.05773 2018 8 31 58361 0.2299 0.3678 0.05720 2018 9 1 58362 0.2302 0.3660 0.05671 2018 9 2 58363 0.2304 0.3643 0.05632 2018 9 3 58364 0.2306 0.3625 0.05606 2018 9 4 58365 0.2308 0.3608 0.05592 2018 9 5 58366 0.2309 0.3591 0.05588 2018 9 6 58367 0.2310 0.3573 0.05587 2018 9 7 58368 0.2311 0.3556 0.05580 2018 9 8 58369 0.2311 0.3538 0.05558 2018 9 9 58370 0.2311 0.3521 0.05516 2018 9 10 58371 0.2311 0.3503 0.05455 2018 9 11 58372 0.2310 0.3486 0.05380 2018 9 12 58373 0.2309 0.3468 0.05300 2018 9 13 58374 0.2307 0.3451 0.05224 2018 9 14 58375 0.2306 0.3433 0.05157 2018 9 15 58376 0.2304 0.3416 0.05101 2018 9 16 58377 0.2301 0.3398 0.05058 2018 9 17 58378 0.2299 0.3381 0.05023 2018 9 18 58379 0.2296 0.3364 0.04994 2018 9 19 58380 0.2292 0.3346 0.04966 2018 9 20 58381 0.2289 0.3329 0.04935 2018 9 21 58382 0.2285 0.3312 0.04896 2018 9 22 58383 0.2280 0.3295 0.04846 2018 9 23 58384 0.2276 0.3278 0.04782 2018 9 24 58385 0.2271 0.3261 0.04703 2018 9 25 58386 0.2266 0.3244 0.04610 2018 9 26 58387 0.2260 0.3227 0.04505 2018 9 27 58388 0.2254 0.3210 0.04394 2018 9 28 58389 0.2248 0.3194 0.04281 2018 9 29 58390 0.2241 0.3177 0.04172 2018 9 30 58391 0.2235 0.3161 0.04070 2018 10 1 58392 0.2227 0.3144 0.03975 2018 10 2 58393 0.2220 0.3128 0.03884 2018 10 3 58394 0.2212 0.3112 0.03790 2018 10 4 58395 0.2204 0.3096 0.03685 2018 10 5 58396 0.2196 0.3080 0.03563 2018 10 6 58397 0.2187 0.3065 0.03418 2018 10 7 58398 0.2178 0.3049 0.03254 2018 10 8 58399 0.2169 0.3033 0.03074 2018 10 9 58400 0.2159 0.3018 0.02888 2018 10 10 58401 0.2150 0.3003 0.02702 2018 10 11 58402 0.2140 0.2988 0.02523 2018 10 12 58403 0.2129 0.2973 0.02363 2018 10 13 58404 0.2118 0.2958 0.02222 2018 10 14 58405 0.2108 0.2944 0.02096 2018 10 15 58406 0.2096 0.2929 0.01979 2018 10 16 58407 0.2085 0.2915 0.01866 2018 10 17 58408 0.2073 0.2901 0.01749 2018 10 18 58409 0.2061 0.2887 0.01624 2018 10 19 58410 0.2049 0.2874 0.01494 2018 10 20 58411 0.2036 0.2860 0.01352 2018 10 21 58412 0.2024 0.2847 0.01200 2018 10 22 58413 0.2011 0.2834 0.01041 2018 10 23 58414 0.1997 0.2821 0.00876 2018 10 24 58415 0.1984 0.2808 0.00706 2018 10 25 58416 0.1970 0.2796 0.00532 2018 10 26 58417 0.1956 0.2783 0.00361 2018 10 27 58418 0.1942 0.2771 0.00202 2018 10 28 58419 0.1927 0.2759 0.00062 2018 10 29 58420 0.1913 0.2748 -0.00068 2018 10 30 58421 0.1898 0.2736 -0.00189 2018 10 31 58422 0.1883 0.2725 -0.00314 2018 11 1 58423 0.1868 0.2714 -0.00456 2018 11 2 58424 0.1852 0.2703 -0.00624 2018 11 3 58425 0.1836 0.2693 -0.00811 2018 11 4 58426 0.1821 0.2683 -0.01014 2018 11 5 58427 0.1805 0.2673 -0.01227 2018 11 6 58428 0.1788 0.2663 -0.01432 2018 11 7 58429 0.1772 0.2653 -0.01626 2018 11 8 58430 0.1755 0.2644 -0.01806 2018 11 9 58431 0.1739 0.2635 -0.01966 2018 11 10 58432 0.1722 0.2626 -0.02104 2018 11 11 58433 0.1705 0.2618 -0.02227 2018 11 12 58434 0.1687 0.2610 -0.02337 2018 11 13 58435 0.1670 0.2602 -0.02441 2018 11 14 58436 0.1652 0.2594 -0.02552 2018 11 15 58437 0.1635 0.2587 -0.02669 2018 11 16 58438 0.1617 0.2579 -0.02787 2018 11 17 58439 0.1599 0.2572 -0.02915 2018 11 18 58440 0.1581 0.2566 -0.03058 2018 11 19 58441 0.1563 0.2559 -0.03215 2018 11 20 58442 0.1545 0.2553 -0.03378 2018 11 21 58443 0.1526 0.2548 -0.03543 2018 11 22 58444 0.1508 0.2542 -0.03702 2018 11 23 58445 0.1489 0.2537 -0.03848 2018 11 24 58446 0.1471 0.2532 -0.03982 2018 11 25 58447 0.1452 0.2527 -0.04105 2018 11 26 58448 0.1433 0.2523 -0.04221 2018 11 27 58449 0.1414 0.2519 -0.04325 2018 11 28 58450 0.1395 0.2515 -0.04440 2018 11 29 58451 0.1376 0.2512 -0.04572 2018 11 30 58452 0.1357 0.2508 -0.04718 2018 12 1 58453 0.1338 0.2505 -0.04882 2018 12 2 58454 0.1319 0.2503 -0.05056 2018 12 3 58455 0.1299 0.2500 -0.05228 2018 12 4 58456 0.1280 0.2498 -0.05397 2018 12 5 58457 0.1261 0.2497 -0.05559 2018 12 6 58458 0.1242 0.2495 -0.05703 2018 12 7 58459 0.1222 0.2494 -0.05831 2018 12 8 58460 0.1203 0.2493 -0.05950 2018 12 9 58461 0.1184 0.2493 -0.06062 2018 12 10 58462 0.1164 0.2492 -0.06174 2018 12 11 58463 0.1145 0.2492 -0.06288 2018 12 12 58464 0.1125 0.2493 -0.06405 2018 12 13 58465 0.1106 0.2493 -0.06532 2018 12 14 58466 0.1087 0.2494 -0.06674 2018 12 15 58467 0.1068 0.2495 -0.06826 2018 12 16 58468 0.1048 0.2497 -0.06987 2018 12 17 58469 0.1029 0.2499 -0.07152 2018 12 18 58470 0.1010 0.2501 -0.07316 2018 12 19 58471 0.0991 0.2503 -0.07473 2018 12 20 58472 0.0972 0.2506 -0.07624 2018 12 21 58473 0.0953 0.2509 -0.07771 2018 12 22 58474 0.0934 0.2512 -0.07909 2018 12 23 58475 0.0915 0.2516 -0.08036 2018 12 24 58476 0.0896 0.2519 -0.08157 2018 12 25 58477 0.0878 0.2523 -0.08276 2018 12 26 58478 0.0859 0.2528 -0.08404 2018 12 27 58479 0.0840 0.2533 -0.08545 2018 12 28 58480 0.0822 0.2538 -0.08700 2018 12 29 58481 0.0804 0.2543 -0.08868 2018 12 30 58482 0.0785 0.2548 -0.09041 2018 12 31 58483 0.0767 0.2554 -0.09209 2019 1 1 58484 0.0749 0.2560 -0.09357 2019 1 2 58485 0.0732 0.2567 -0.09489 2019 1 3 58486 0.0714 0.2573 -0.09608 2019 1 4 58487 0.0696 0.2580 -0.09709 2019 1 5 58488 0.0679 0.2587 -0.09797 2019 1 6 58489 0.0662 0.2595 -0.09876 2019 1 7 58490 0.0644 0.2602 -0.09948 2019 1 8 58491 0.0627 0.2610 -0.10020 2019 1 9 58492 0.0611 0.2619 -0.10109 2019 1 10 58493 0.0594 0.2627 -0.10211 2019 1 11 58494 0.0578 0.2636 -0.10318 2019 1 12 58495 0.0561 0.2645 -0.10430 2019 1 13 58496 0.0545 0.2654 -0.10548 2019 1 14 58497 0.0529 0.2664 -0.10675 2019 1 15 58498 0.0513 0.2673 -0.10807 2019 1 16 58499 0.0498 0.2683 -0.10935 2019 1 17 58500 0.0483 0.2693 -0.11055 2019 1 18 58501 0.0467 0.2704 -0.11170 2019 1 19 58502 0.0453 0.2715 -0.11281 2019 1 20 58503 0.0438 0.2726 -0.11397 2019 1 21 58504 0.0423 0.2737 -0.11517 2019 1 22 58505 0.0409 0.2748 -0.11649 2019 1 23 58506 0.0395 0.2760 -0.11798 2019 1 24 58507 0.0381 0.2771 -0.11963 2019 1 25 58508 0.0368 0.2783 -0.12139 2019 1 26 58509 0.0354 0.2796 -0.12315 2019 1 27 58510 0.0341 0.2808 -0.12493 2019 1 28 58511 0.0328 0.2821 -0.12663 2019 1 29 58512 0.0316 0.2833 -0.12816 2019 1 30 58513 0.0303 0.2846 -0.12946 2019 1 31 58514 0.0291 0.2860 -0.13054 2019 2 1 58515 0.0279 0.2873 -0.13148 2019 2 2 58516 0.0268 0.2886 -0.13231 2019 2 3 58517 0.0256 0.2900 -0.13305 2019 2 4 58518 0.0245 0.2914 -0.13370 2019 2 5 58519 0.0235 0.2928 -0.13437 2019 2 6 58520 0.0224 0.2942 -0.13518 2019 2 7 58521 0.0214 0.2957 -0.13616 2019 2 8 58522 0.0204 0.2971 -0.13724 2019 2 9 58523 0.0194 0.2986 -0.13840 2019 2 10 58524 0.0185 0.3001 -0.13955 2019 2 11 58525 0.0176 0.3016 -0.14075 2019 2 12 58526 0.0167 0.3031 -0.14194 2019 2 13 58527 0.0159 0.3046 -0.14311 2019 2 14 58528 0.0150 0.3062 -0.14424 2019 2 15 58529 0.0143 0.3077 -0.14526 2019 2 16 58530 0.0135 0.3093 -0.14624 2019 2 17 58531 0.0128 0.3109 -0.14725 2019 2 18 58532 0.0121 0.3125 -0.14835 2019 2 19 58533 0.0114 0.3141 -0.14960 2019 2 20 58534 0.0108 0.3157 -0.15111 2019 2 21 58535 0.0102 0.3173 -0.15283 2019 2 22 58536 0.0096 0.3189 -0.15463 2019 2 23 58537 0.0091 0.3205 -0.15650 2019 2 24 58538 0.0086 0.3222 -0.15822 2019 2 25 58539 0.0081 0.3238 -0.15974 2019 2 26 58540 0.0076 0.3255 -0.16104 2019 2 27 58541 0.0072 0.3272 -0.16213 2019 2 28 58542 0.0068 0.3288 -0.16307 2019 3 1 58543 0.0065 0.3305 -0.16392 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) 58152 -103.32 0.30 -9.02 0.04 58153 -103.32 0.30 -9.03 0.04 58154 -103.64 0.30 -8.81 0.04 58155 -104.00 0.30 -8.58 0.04 58156 -104.25 0.30 -8.55 0.03 58157 -104.48 0.30 -8.73 0.03 58158 -104.77 0.30 -8.98 0.03 58159 -104.92 0.30 -9.16 0.03 58160 -104.70 0.30 -9.29 0.03 58161 -104.20 0.30 -9.39 0.03 58162 -103.69 0.30 -9.45 0.02 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 58120 -105.2 -8.2 58121 -104.8 -8.1 58122 -103.9 -7.9 58123 -103.0 -8.0 58124 -102.6 -8.1 58125 -102.7 -8.0 58126 -102.9 -7.9 58127 -103.1 -7.7 58128 -103.4 -7.8 58129 -103.7 -7.9 58130 -104.2 -8.1 58131 -104.6 -8.0 58132 -104.6 -8.1 58133 -104.3 -8.2 58134 -104.0 -8.3 58135 -103.8 -8.3 58136 -103.6 -8.2 58137 -103.6 -8.2 58138 -103.6 -8.2 58139 -103.7 -8.3 58140 -103.9 -8.3 58141 -104.0 -8.3 58142 -104.0 -8.4 58143 -104.0 -8.4 58144 -104.1 -8.3 58145 -104.3 -8.2 58146 -104.9 -8.2 58147 -105.5 -8.4 58148 -105.8 -8.6 58149 -105.5 -8.6 58150 -104.8 -8.5 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58152 0.104 0.119 -0.322 0.040 58153 0.089 0.119 -0.345 0.040 58154 0.074 0.119 -0.335 0.040 58155 0.059 0.119 -0.320 0.040 58156 0.052 0.119 -0.303 0.030 58157 0.053 0.119 -0.291 0.030 58158 0.049 0.119 -0.300 0.030 58159 0.051 0.119 -0.311 0.030 58160 0.074 0.119 -0.342 0.030 58161 0.107 0.119 -0.361 0.030 58162 0.140 0.119 -0.355 0.020 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 58120 0.10 -0.08 58121 0.11 -0.11 58122 0.21 -0.08 58123 0.33 -0.17 58124 0.36 -0.19 58125 0.34 -0.13 58126 0.35 -0.20 58127 0.34 -0.12 58128 0.24 -0.16 58129 0.17 -0.12 58130 0.08 -0.21 58131 0.01 -0.06 58132 0.00 -0.09 58133 0.02 -0.07 58134 0.02 -0.09 58135 0.00 -0.09 58136 0.02 -0.03 58137 -0.01 -0.05 58138 0.01 -0.02 58139 0.02 -0.09 58140 -0.01 -0.08 58141 -0.01 -0.06 58142 0.02 -0.08 58143 0.03 -0.03 58144 0.00 0.00 58145 0.01 -0.02 58146 0.00 -0.02 58147 0.02 -0.05 58148 0.02 -0.08 58149 0.02 -0.06 58150 0.02 0.00 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).