********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 3 May 2018 Vol. XXXI No. 018 ______________________________________________________________________ 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 * * * * If you wish to be a contributor to the IERS Conventions future * * editions, please go to the following web sites for more details: * * http://maia.usno.navy.mil/conventions/announcements/ * * call-for-contributors.php * * http://iers-conventions.obspm.fr/announcements/ * * call-for-contributors.php * * * * 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 4 27 58235 0.06382 .00009 0.43389 .00009 0.107162 0.000014 18 4 28 58236 0.06506 .00009 0.43475 .00009 0.105618 0.000014 18 4 29 58237 0.06640 .00009 0.43567 .00009 0.104118 0.000016 18 4 30 58238 0.06768 .00009 0.43665 .00009 0.102812 0.000014 18 5 1 58239 0.06877 .00009 0.43767 .00009 0.101657 0.000014 18 5 2 58240 0.06959 .00009 0.43865 .00009 0.100625 0.000006 18 5 3 58241 0.07039 .00009 0.43940 .00009 0.099729 0.000005 IERS Final Values MJD x y UT1-UTC " " s 18 3 2 58179 0.0011 0.3437 0.16534 18 3 3 58180 0.0027 0.3463 0.16404 18 3 4 58181 0.0040 0.3490 0.16282 18 3 5 58182 0.0053 0.3517 0.16160 18 3 6 58183 0.0065 0.3543 0.16049 18 3 7 58184 0.0073 0.3567 0.15951 18 3 8 58185 0.0076 0.3588 0.15864 18 3 9 58186 0.0079 0.3604 0.15783 18 3 10 58187 0.0084 0.3616 0.15712 18 3 11 58188 0.0096 0.3626 0.15641 18 3 12 58189 0.0114 0.3639 0.15570 18 3 13 58190 0.0129 0.3656 0.15495 18 3 14 58191 0.0140 0.3673 0.15412 18 3 15 58192 0.0145 0.3693 0.15322 18 3 16 58193 0.0148 0.3713 0.15223 18 3 17 58194 0.0149 0.3731 0.15116 18 3 18 58195 0.0150 0.3745 0.15006 18 3 19 58196 0.0156 0.3759 0.14886 18 3 20 58197 0.0168 0.3774 0.14759 18 3 21 58198 0.0176 0.3788 0.14633 18 3 22 58199 0.0191 0.3797 0.14514 18 3 23 58200 0.0208 0.3810 0.14406 18 3 24 58201 0.0222 0.3826 0.14310 18 3 25 58202 0.0234 0.3843 0.14223 18 3 26 58203 0.0244 0.3855 0.14136 18 3 27 58204 0.0257 0.3864 0.14041 18 3 28 58205 0.0270 0.3874 0.13933 18 3 29 58206 0.0281 0.3890 0.13815 18 3 30 58207 0.0294 0.3908 0.13685 18 3 31 58208 0.0310 0.3927 0.13542 18 4 1 58209 0.0322 0.3945 0.13405 _______________________________________________________________________ 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 = 0.1147 - 0.0701 cos A + 0.1298 sin A + 0.0236 cos C - 0.0252 sin C y = 0.3416 + 0.1211 cos A + 0.0705 sin A - 0.0252 cos C - 0.0236 sin C UT1-UTC = 0.1441 - 0.00080 (MJD - 58249) - (UT2-UT1) where A = 2*pi*(MJD-58241)/365.25 and C = 2*pi*(MJD-58241)/435. TAI-UTC(MJD 58242) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58241)**0.80 S t = 0.00025 (MJD-58241)**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 5 4 58242 0.0714 0.4400 0.09896 2018 5 5 58243 0.0726 0.4405 0.09831 2018 5 6 58244 0.0740 0.4410 0.09773 2018 5 7 58245 0.0755 0.4416 0.09717 2018 5 8 58246 0.0770 0.4421 0.09660 2018 5 9 58247 0.0787 0.4428 0.09597 2018 5 10 58248 0.0803 0.4433 0.09525 2018 5 11 58249 0.0820 0.4439 0.09442 2018 5 12 58250 0.0837 0.4444 0.09348 2018 5 13 58251 0.0855 0.4449 0.09242 2018 5 14 58252 0.0872 0.4454 0.09130 2018 5 15 58253 0.0890 0.4458 0.09020 2018 5 16 58254 0.0907 0.4463 0.08917 2018 5 17 58255 0.0924 0.4468 0.08829 2018 5 18 58256 0.0942 0.4472 0.08753 2018 5 19 58257 0.0959 0.4475 0.08684 2018 5 20 58258 0.0975 0.4479 0.08616 2018 5 21 58259 0.0991 0.4482 0.08544 2018 5 22 58260 0.1007 0.4485 0.08465 2018 5 23 58261 0.1023 0.4487 0.08381 2018 5 24 58262 0.1039 0.4489 0.08294 2018 5 25 58263 0.1055 0.4490 0.08210 2018 5 26 58264 0.1070 0.4492 0.08135 2018 5 27 58265 0.1086 0.4492 0.08072 2018 5 28 58266 0.1102 0.4493 0.08025 2018 5 29 58267 0.1118 0.4493 0.07994 2018 5 30 58268 0.1134 0.4493 0.07980 2018 5 31 58269 0.1151 0.4492 0.07980 2018 6 1 58270 0.1167 0.4491 0.07991 2018 6 2 58271 0.1184 0.4490 0.08008 2018 6 3 58272 0.1201 0.4489 0.08027 2018 6 4 58273 0.1218 0.4488 0.08041 2018 6 5 58274 0.1235 0.4486 0.08049 2018 6 6 58275 0.1251 0.4484 0.08045 2018 6 7 58276 0.1268 0.4482 0.08031 2018 6 8 58277 0.1285 0.4479 0.08007 2018 6 9 58278 0.1302 0.4477 0.07973 2018 6 10 58279 0.1318 0.4474 0.07935 2018 6 11 58280 0.1335 0.4471 0.07897 2018 6 12 58281 0.1351 0.4467 0.07867 2018 6 13 58282 0.1367 0.4464 0.07851 2018 6 14 58283 0.1383 0.4460 0.07849 2018 6 15 58284 0.1399 0.4456 0.07858 2018 6 16 58285 0.1415 0.4451 0.07868 2018 6 17 58286 0.1431 0.4446 0.07875 2018 6 18 58287 0.1446 0.4441 0.07872 2018 6 19 58288 0.1462 0.4436 0.07859 2018 6 20 58289 0.1477 0.4430 0.07839 2018 6 21 58290 0.1493 0.4424 0.07817 2018 6 22 58291 0.1508 0.4418 0.07799 2018 6 23 58292 0.1523 0.4411 0.07790 2018 6 24 58293 0.1538 0.4405 0.07792 2018 6 25 58294 0.1553 0.4398 0.07809 2018 6 26 58295 0.1568 0.4390 0.07838 2018 6 27 58296 0.1583 0.4383 0.07879 2018 6 28 58297 0.1597 0.4375 0.07927 2018 6 29 58298 0.1612 0.4368 0.07979 2018 6 30 58299 0.1626 0.4359 0.08030 2018 7 1 58300 0.1640 0.4351 0.08077 2018 7 2 58301 0.1654 0.4343 0.08115 2018 7 3 58302 0.1668 0.4334 0.08143 2018 7 4 58303 0.1682 0.4325 0.08160 2018 7 5 58304 0.1696 0.4316 0.08166 2018 7 6 58305 0.1709 0.4306 0.08163 2018 7 7 58306 0.1722 0.4297 0.08154 2018 7 8 58307 0.1735 0.4287 0.08144 2018 7 9 58308 0.1748 0.4277 0.08139 2018 7 10 58309 0.1760 0.4266 0.08144 2018 7 11 58310 0.1773 0.4256 0.08160 2018 7 12 58311 0.1785 0.4245 0.08186 2018 7 13 58312 0.1797 0.4234 0.08216 2018 7 14 58313 0.1809 0.4223 0.08241 2018 7 15 58314 0.1820 0.4212 0.08254 2018 7 16 58315 0.1832 0.4201 0.08253 2018 7 17 58316 0.1843 0.4189 0.08241 2018 7 18 58317 0.1854 0.4177 0.08223 2018 7 19 58318 0.1865 0.4165 0.08208 2018 7 20 58319 0.1875 0.4153 0.08201 2018 7 21 58320 0.1885 0.4141 0.08206 2018 7 22 58321 0.1896 0.4128 0.08227 2018 7 23 58322 0.1905 0.4115 0.08261 2018 7 24 58323 0.1915 0.4103 0.08307 2018 7 25 58324 0.1924 0.4090 0.08361 2018 7 26 58325 0.1933 0.4077 0.08420 2018 7 27 58326 0.1942 0.4063 0.08479 2018 7 28 58327 0.1951 0.4050 0.08532 2018 7 29 58328 0.1959 0.4036 0.08577 2018 7 30 58329 0.1967 0.4023 0.08610 2018 7 31 58330 0.1975 0.4009 0.08630 2018 8 1 58331 0.1983 0.3995 0.08637 2018 8 2 58332 0.1990 0.3981 0.08634 2018 8 3 58333 0.1997 0.3967 0.08623 2018 8 4 58334 0.2004 0.3953 0.08608 2018 8 5 58335 0.2011 0.3938 0.08595 2018 8 6 58336 0.2017 0.3924 0.08586 2018 8 7 58337 0.2023 0.3909 0.08586 2018 8 8 58338 0.2029 0.3894 0.08593 2018 8 9 58339 0.2034 0.3880 0.08603 2018 8 10 58340 0.2039 0.3865 0.08609 2018 8 11 58341 0.2044 0.3850 0.08603 2018 8 12 58342 0.2049 0.3835 0.08580 2018 8 13 58343 0.2053 0.3820 0.08540 2018 8 14 58344 0.2057 0.3805 0.08489 2018 8 15 58345 0.2061 0.3789 0.08435 2018 8 16 58346 0.2064 0.3774 0.08387 2018 8 17 58347 0.2068 0.3759 0.08350 2018 8 18 58348 0.2071 0.3743 0.08329 2018 8 19 58349 0.2073 0.3728 0.08322 2018 8 20 58350 0.2075 0.3712 0.08334 2018 8 21 58351 0.2077 0.3697 0.08356 2018 8 22 58352 0.2079 0.3681 0.08382 2018 8 23 58353 0.2081 0.3666 0.08410 2018 8 24 58354 0.2082 0.3650 0.08433 2018 8 25 58355 0.2083 0.3635 0.08447 2018 8 26 58356 0.2083 0.3619 0.08450 2018 8 27 58357 0.2084 0.3603 0.08440 2018 8 28 58358 0.2084 0.3588 0.08415 2018 8 29 58359 0.2083 0.3572 0.08379 2018 8 30 58360 0.2083 0.3556 0.08334 2018 8 31 58361 0.2082 0.3541 0.08286 2018 9 1 58362 0.2081 0.3525 0.08238 2018 9 2 58363 0.2079 0.3510 0.08195 2018 9 3 58364 0.2077 0.3494 0.08160 2018 9 4 58365 0.2075 0.3478 0.08132 2018 9 5 58366 0.2073 0.3463 0.08109 2018 9 6 58367 0.2070 0.3447 0.08083 2018 9 7 58368 0.2067 0.3432 0.08048 2018 9 8 58369 0.2064 0.3417 0.07997 2018 9 9 58370 0.2060 0.3401 0.07926 2018 9 10 58371 0.2057 0.3386 0.07838 2018 9 11 58372 0.2053 0.3371 0.07740 2018 9 12 58373 0.2048 0.3356 0.07642 2018 9 13 58374 0.2043 0.3341 0.07553 2018 9 14 58375 0.2039 0.3326 0.07478 2018 9 15 58376 0.2033 0.3311 0.07419 2018 9 16 58377 0.2028 0.3296 0.07376 2018 9 17 58378 0.2022 0.3281 0.07344 2018 9 18 58379 0.2016 0.3266 0.07320 2018 9 19 58380 0.2009 0.3252 0.07298 2018 9 20 58381 0.2003 0.3237 0.07272 2018 9 21 58382 0.1996 0.3223 0.07240 2018 9 22 58383 0.1989 0.3209 0.07196 2018 9 23 58384 0.1981 0.3195 0.07138 2018 9 24 58385 0.1974 0.3181 0.07066 2018 9 25 58386 0.1966 0.3167 0.06980 2018 9 26 58387 0.1957 0.3153 0.06884 2018 9 27 58388 0.1949 0.3139 0.06783 2018 9 28 58389 0.1940 0.3126 0.06683 2018 9 29 58390 0.1931 0.3112 0.06588 2018 9 30 58391 0.1922 0.3099 0.06503 2018 10 1 58392 0.1912 0.3086 0.06426 2018 10 2 58393 0.1903 0.3073 0.06357 2018 10 3 58394 0.1893 0.3061 0.06288 2018 10 4 58395 0.1882 0.3048 0.06212 2018 10 5 58396 0.1872 0.3036 0.06124 2018 10 6 58397 0.1861 0.3023 0.06017 2018 10 7 58398 0.1850 0.3011 0.05892 2018 10 8 58399 0.1839 0.2999 0.05753 2018 10 9 58400 0.1828 0.2987 0.05609 2018 10 10 58401 0.1816 0.2976 0.05469 2018 10 11 58402 0.1804 0.2965 0.05340 2018 10 12 58403 0.1792 0.2953 0.05229 2018 10 13 58404 0.1780 0.2942 0.05134 2018 10 14 58405 0.1767 0.2932 0.05054 2018 10 15 58406 0.1754 0.2921 0.04985 2018 10 16 58407 0.1742 0.2911 0.04922 2018 10 17 58408 0.1728 0.2900 0.04858 2018 10 18 58409 0.1715 0.2890 0.04791 2018 10 19 58410 0.1702 0.2881 0.04714 2018 10 20 58411 0.1688 0.2871 0.04625 2018 10 21 58412 0.1674 0.2862 0.04522 2018 10 22 58413 0.1660 0.2853 0.04406 2018 10 23 58414 0.1646 0.2844 0.04279 2018 10 24 58415 0.1632 0.2835 0.04145 2018 10 25 58416 0.1617 0.2827 0.04011 2018 10 26 58417 0.1602 0.2818 0.03881 2018 10 27 58418 0.1587 0.2810 0.03762 2018 10 28 58419 0.1572 0.2803 0.03655 2018 10 29 58420 0.1557 0.2795 0.03558 2018 10 30 58421 0.1542 0.2788 0.03466 2018 10 31 58422 0.1527 0.2781 0.03371 2018 11 1 58423 0.1511 0.2774 0.03268 2018 11 2 58424 0.1495 0.2768 0.03150 2018 11 3 58425 0.1479 0.2761 0.03016 2018 11 4 58426 0.1464 0.2755 0.02869 2018 11 5 58427 0.1447 0.2749 0.02714 2018 11 6 58428 0.1431 0.2744 0.02559 2018 11 7 58429 0.1415 0.2739 0.02412 2018 11 8 58430 0.1399 0.2734 0.02279 2018 11 9 58431 0.1382 0.2729 0.02161 2018 11 10 58432 0.1366 0.2724 0.02058 2018 11 11 58433 0.1349 0.2720 0.01965 2018 11 12 58434 0.1332 0.2716 0.01879 2018 11 13 58435 0.1315 0.2713 0.01795 2018 11 14 58436 0.1298 0.2709 0.01709 2018 11 15 58437 0.1281 0.2706 0.01618 2018 11 16 58438 0.1264 0.2703 0.01519 2018 11 17 58439 0.1247 0.2701 0.01411 2018 11 18 58440 0.1230 0.2698 0.01293 2018 11 19 58441 0.1213 0.2696 0.01166 2018 11 20 58442 0.1196 0.2694 0.01032 2018 11 21 58443 0.1179 0.2693 0.00896 2018 11 22 58444 0.1161 0.2692 0.00765 2018 11 23 58445 0.1144 0.2691 0.00643 2018 11 24 58446 0.1127 0.2690 0.00534 2018 11 25 58447 0.1109 0.2690 0.00438 2018 11 26 58448 0.1092 0.2690 0.00348 2018 11 27 58449 0.1074 0.2690 0.00259 2018 11 28 58450 0.1057 0.2690 0.00161 2018 11 29 58451 0.1040 0.2691 0.00052 2018 11 30 58452 0.1022 0.2692 -0.00072 2018 12 1 58453 0.1005 0.2693 -0.00207 2018 12 2 58454 0.0988 0.2695 -0.00346 2018 12 3 58455 0.0970 0.2696 -0.00482 2018 12 4 58456 0.0953 0.2699 -0.00606 2018 12 5 58457 0.0936 0.2701 -0.00712 2018 12 6 58458 0.0919 0.2704 -0.00798 2018 12 7 58459 0.0902 0.2706 -0.00864 2018 12 8 58460 0.0884 0.2710 -0.00911 2018 12 9 58461 0.0867 0.2713 -0.00944 2018 12 10 58462 0.0850 0.2717 -0.00969 2018 12 11 58463 0.0834 0.2721 -0.00992 2018 12 12 58464 0.0817 0.2725 -0.01021 2018 12 13 58465 0.0800 0.2730 -0.01057 2018 12 14 58466 0.0783 0.2734 -0.01102 2018 12 15 58467 0.0767 0.2739 -0.01159 2018 12 16 58468 0.0750 0.2745 -0.01226 2018 12 17 58469 0.0734 0.2750 -0.01303 2018 12 18 58470 0.0717 0.2756 -0.01388 2018 12 19 58471 0.0701 0.2762 -0.01481 2018 12 20 58472 0.0685 0.2769 -0.01583 2018 12 21 58473 0.0669 0.2775 -0.01680 2018 12 22 58474 0.0653 0.2782 -0.01767 2018 12 23 58475 0.0638 0.2789 -0.01837 2018 12 24 58476 0.0622 0.2797 -0.01900 2018 12 25 58477 0.0606 0.2804 -0.01964 2018 12 26 58478 0.0591 0.2812 -0.02044 2018 12 27 58479 0.0576 0.2820 -0.02143 2018 12 28 58480 0.0561 0.2829 -0.02255 2018 12 29 58481 0.0546 0.2837 -0.02379 2018 12 30 58482 0.0531 0.2846 -0.02502 2018 12 31 58483 0.0517 0.2855 -0.02624 2019 1 1 58484 0.0502 0.2865 -0.02737 2019 1 2 58485 0.0488 0.2874 -0.02831 2019 1 3 58486 0.0474 0.2884 -0.02905 2019 1 4 58487 0.0460 0.2894 -0.02958 2019 1 5 58488 0.0447 0.2904 -0.03001 2019 1 6 58489 0.0433 0.2915 -0.03038 2019 1 7 58490 0.0420 0.2925 -0.03072 2019 1 8 58491 0.0407 0.2936 -0.03112 2019 1 9 58492 0.0394 0.2947 -0.03160 2019 1 10 58493 0.0381 0.2958 -0.03219 2019 1 11 58494 0.0369 0.2970 -0.03288 2019 1 12 58495 0.0356 0.2982 -0.03369 2019 1 13 58496 0.0344 0.2993 -0.03461 2019 1 14 58497 0.0332 0.3006 -0.03558 2019 1 15 58498 0.0321 0.3018 -0.03654 2019 1 16 58499 0.0309 0.3030 -0.03748 2019 1 17 58500 0.0298 0.3043 -0.03842 2019 1 18 58501 0.0287 0.3056 -0.03928 2019 1 19 58502 0.0277 0.3069 -0.04005 2019 1 20 58503 0.0266 0.3082 -0.04071 2019 1 21 58504 0.0256 0.3095 -0.04141 2019 1 22 58505 0.0246 0.3108 -0.04221 2019 1 23 58506 0.0236 0.3122 -0.04314 2019 1 24 58507 0.0227 0.3136 -0.04427 2019 1 25 58508 0.0218 0.3150 -0.04554 2019 1 26 58509 0.0209 0.3164 -0.04689 2019 1 27 58510 0.0200 0.3178 -0.04811 2019 1 28 58511 0.0192 0.3193 -0.04924 2019 1 29 58512 0.0184 0.3207 -0.05030 2019 1 30 58513 0.0176 0.3222 -0.05115 2019 1 31 58514 0.0168 0.3236 -0.05185 2019 2 1 58515 0.0161 0.3251 -0.05248 2019 2 2 58516 0.0154 0.3266 -0.05302 2019 2 3 58517 0.0147 0.3281 -0.05359 2019 2 4 58518 0.0141 0.3297 -0.05421 2019 2 5 58519 0.0134 0.3312 -0.05493 2019 2 6 58520 0.0128 0.3327 -0.05579 2019 2 7 58521 0.0123 0.3343 -0.05682 2019 2 8 58522 0.0118 0.3358 -0.05804 2019 2 9 58523 0.0112 0.3374 -0.05939 2019 2 10 58524 0.0108 0.3390 -0.06082 2019 2 11 58525 0.0103 0.3406 -0.06229 2019 2 12 58526 0.0099 0.3422 -0.06377 2019 2 13 58527 0.0095 0.3438 -0.06523 2019 2 14 58528 0.0092 0.3454 -0.06669 2019 2 15 58529 0.0088 0.3470 -0.06803 2019 2 16 58530 0.0085 0.3486 -0.06930 2019 2 17 58531 0.0083 0.3502 -0.07058 2019 2 18 58532 0.0080 0.3518 -0.07199 2019 2 19 58533 0.0078 0.3535 -0.07360 2019 2 20 58534 0.0077 0.3551 -0.07546 2019 2 21 58535 0.0075 0.3567 -0.07753 2019 2 22 58536 0.0074 0.3584 -0.07968 2019 2 23 58537 0.0073 0.3600 -0.08182 2019 2 24 58538 0.0073 0.3616 -0.08382 2019 2 25 58539 0.0072 0.3633 -0.08557 2019 2 26 58540 0.0073 0.3649 -0.08709 2019 2 27 58541 0.0073 0.3665 -0.08842 2019 2 28 58542 0.0074 0.3682 -0.08963 2019 3 1 58543 0.0075 0.3698 -0.09078 2019 3 2 58544 0.0076 0.3715 -0.09190 2019 3 3 58545 0.0078 0.3731 -0.09295 2019 3 4 58546 0.0080 0.3747 -0.09408 2019 3 5 58547 0.0082 0.3764 -0.09527 2019 3 6 58548 0.0084 0.3780 -0.09660 2019 3 7 58549 0.0087 0.3796 -0.09813 2019 3 8 58550 0.0090 0.3812 -0.09988 2019 3 9 58551 0.0094 0.3828 -0.10176 2019 3 10 58552 0.0097 0.3844 -0.10369 2019 3 11 58553 0.0102 0.3860 -0.10562 2019 3 12 58554 0.0106 0.3876 -0.10745 2019 3 13 58555 0.0111 0.3892 -0.10916 2019 3 14 58556 0.0116 0.3908 -0.11079 2019 3 15 58557 0.0121 0.3924 -0.11233 2019 3 16 58558 0.0126 0.3939 -0.11379 2019 3 17 58559 0.0132 0.3955 -0.11531 2019 3 18 58560 0.0138 0.3970 -0.11693 2019 3 19 58561 0.0145 0.3986 -0.11875 2019 3 20 58562 0.0151 0.4001 -0.12084 2019 3 21 58563 0.0159 0.4016 -0.12309 2019 3 22 58564 0.0166 0.4031 -0.12532 2019 3 23 58565 0.0173 0.4046 -0.12747 2019 3 24 58566 0.0181 0.4061 -0.12950 2019 3 25 58567 0.0189 0.4075 -0.13135 2019 3 26 58568 0.0198 0.4090 -0.13297 2019 3 27 58569 0.0206 0.4104 -0.13439 2019 3 28 58570 0.0215 0.4119 -0.13566 2019 3 29 58571 0.0225 0.4133 -0.13682 2019 3 30 58572 0.0234 0.4147 -0.13799 2019 3 31 58573 0.0244 0.4160 -0.13920 2019 4 1 58574 0.0254 0.4174 -0.14052 2019 4 2 58575 0.0264 0.4188 -0.14185 2019 4 3 58576 0.0275 0.4201 -0.14334 2019 4 4 58577 0.0286 0.4214 -0.14499 2019 4 5 58578 0.0297 0.4227 -0.14672 2019 4 6 58579 0.0308 0.4240 -0.14856 2019 4 7 58580 0.0319 0.4252 -0.15040 2019 4 8 58581 0.0331 0.4265 -0.15217 2019 4 9 58582 0.0343 0.4277 -0.15388 2019 4 10 58583 0.0355 0.4289 -0.15552 2019 4 11 58584 0.0368 0.4301 -0.15706 2019 4 12 58585 0.0381 0.4313 -0.15854 2019 4 13 58586 0.0394 0.4324 -0.16009 2019 4 14 58587 0.0407 0.4335 -0.16179 2019 4 15 58588 0.0420 0.4347 -0.16371 2019 4 16 58589 0.0434 0.4357 -0.16585 2019 4 17 58590 0.0447 0.4368 -0.16817 2019 4 18 58591 0.0461 0.4378 -0.17063 2019 4 19 58592 0.0475 0.4389 -0.17312 2019 4 20 58593 0.0490 0.4398 -0.17550 2019 4 21 58594 0.0504 0.4408 -0.17766 2019 4 22 58595 0.0519 0.4418 -0.17955 2019 4 23 58596 0.0534 0.4427 -0.18117 2019 4 24 58597 0.0549 0.4436 -0.18254 2019 4 25 58598 0.0564 0.4445 -0.18379 2019 4 26 58599 0.0580 0.4453 -0.18507 2019 4 27 58600 0.0595 0.4461 -0.18638 2019 4 28 58601 0.0611 0.4469 -0.18773 2019 4 29 58602 0.0627 0.4477 -0.18915 2019 4 30 58603 0.0643 0.4485 -0.19061 2019 5 1 58604 0.0659 0.4492 -0.19214 2019 5 2 58605 0.0676 0.4499 -0.19373 2019 5 3 58606 0.0692 0.4506 -0.19538 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) 58215 -103.20 0.10 -11.78 0.20 58216 -102.89 0.10 -11.88 0.19 58217 -102.39 0.10 -11.90 0.19 58218 -101.89 0.10 -11.90 0.18 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 58179 -103.0 -10.2 58180 -102.6 -10.4 58181 -102.5 -10.4 58182 -102.6 -10.3 58183 -102.8 -10.1 58184 -103.3 -10.0 58185 -103.8 -10.2 58186 -104.2 -10.5 58187 -104.3 -10.7 58188 -104.1 -10.8 58189 -103.6 -10.8 58190 -103.1 -10.8 58191 -102.8 -10.9 58192 -102.7 -10.8 58193 -102.6 -10.7 58194 -102.5 -10.6 58195 -102.6 -10.5 58196 -102.6 -10.6 58197 -102.7 -10.8 58198 -102.8 -11.0 58199 -102.9 -11.1 58200 -103.2 -11.1 58201 -103.4 -11.1 58202 -103.4 -11.2 58203 -103.1 -11.3 58204 -102.6 -11.3 58205 -102.1 -11.3 58206 -101.8 -11.3 58207 -101.8 -11.4 58208 -102.0 -11.5 58209 -102.1 -11.7 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58215 -0.039 0.038 -0.198 0.201 58216 -0.037 0.038 -0.193 0.190 58217 -0.036 0.038 -0.187 0.190 58218 -0.034 0.038 -0.181 0.178 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 58179 0.19 -0.15 58180 0.21 -0.12 58181 0.23 -0.10 58182 0.26 -0.07 58183 0.28 -0.04 58184 0.23 -0.09 58185 0.15 -0.14 58186 0.07 -0.20 58187 0.04 -0.21 58188 0.01 -0.20 58189 -0.02 -0.19 58190 -0.04 -0.18 58191 -0.03 -0.22 58192 -0.02 -0.26 58193 0.00 -0.31 58194 0.01 -0.30 58195 0.02 -0.27 58196 0.03 -0.24 58197 0.03 -0.21 58198 0.03 -0.20 58199 0.03 -0.20 58200 0.02 -0.19 58201 0.01 -0.18 58202 0.00 -0.17 58203 -0.01 -0.15 58204 -0.02 -0.14 58205 0.03 -0.15 58206 0.04 -0.16 58207 0.03 -0.16 58208 0.02 -0.16 58209 0.01 -0.16 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).