********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 5 July 2018 Vol. XXXI No. 027 ______________________________________________________________________ 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 *********************************************************************** * * * There will NOT be a leap second introduced * * in UTC on 31 December 2018 * * * * 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 * * * * 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 6 29 58298 0.15858 .00009 0.43087 .00009 0.069345 0.000015 18 6 30 58299 0.16092 .00009 0.43031 .00009 0.069967 0.000015 18 7 1 58300 0.16298 .00009 0.42964 .00009 0.070582 0.000010 18 7 2 58301 0.16496 .00009 0.42856 .00009 0.071160 0.000007 18 7 3 58302 0.16709 .00009 0.42718 .00009 0.071657 0.000006 18 7 4 58303 0.16961 .00009 0.42603 .00009 0.072021 0.000006 18 7 5 58304 0.17236 .00009 0.42536 .00009 0.072238 0.000055 IERS Final Values MJD x y UT1-UTC " " s 18 5 2 58240 0.0695 0.4388 0.10062 18 5 3 58241 0.0703 0.4394 0.09972 18 5 4 58242 0.0714 0.4398 0.09893 18 5 5 58243 0.0722 0.4403 0.09821 18 5 6 58244 0.0732 0.4411 0.09755 18 5 7 58245 0.0741 0.4420 0.09693 18 5 8 58246 0.0753 0.4428 0.09631 18 5 9 58247 0.0765 0.4438 0.09553 18 5 10 58248 0.0779 0.4447 0.09458 18 5 11 58249 0.0789 0.4454 0.09363 18 5 12 58250 0.0806 0.4453 0.09263 18 5 13 58251 0.0831 0.4452 0.09151 18 5 14 58252 0.0851 0.4451 0.09053 18 5 15 58253 0.0875 0.4452 0.08940 18 5 16 58254 0.0896 0.4455 0.08859 18 5 17 58255 0.0918 0.4457 0.08780 18 5 18 58256 0.0940 0.4462 0.08715 18 5 19 58257 0.0957 0.4469 0.08658 18 5 20 58258 0.0970 0.4475 0.08606 18 5 21 58259 0.0981 0.4477 0.08545 18 5 22 58260 0.0992 0.4477 0.08461 18 5 23 58261 0.1007 0.4477 0.08368 18 5 24 58262 0.1025 0.4478 0.08264 18 5 25 58263 0.1045 0.4480 0.08160 18 5 26 58264 0.1060 0.4480 0.08064 18 5 27 58265 0.1074 0.4477 0.07972 18 5 28 58266 0.1090 0.4475 0.07898 18 5 29 58267 0.1107 0.4472 0.07837 18 5 30 58268 0.1121 0.4472 0.07773 18 5 31 58269 0.1132 0.4472 0.07732 18 6 1 58270 0.1142 0.4469 0.07694 _______________________________________________________________________ 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 = 0.1166 + 0.0775 cos A + 0.1047 sin A - 0.0153 cos C - 0.0170 sin C y = 0.3456 + 0.1005 cos A - 0.0740 sin A - 0.0170 cos C + 0.0153 sin C UT1-UTC = 0.0859 - 0.00072 (MJD - 58312) - (UT2-UT1) where A = 2*pi*(MJD-58304)/365.25 and C = 2*pi*(MJD-58304)/435. TAI-UTC(MJD 58305) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-58304)**0.80 S t = 0.00025 (MJD-58304)**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 7 6 58305 0.1748 0.4249 0.07232 2018 7 7 58306 0.1769 0.4245 0.07228 2018 7 8 58307 0.1787 0.4240 0.07216 2018 7 9 58308 0.1803 0.4234 0.07202 2018 7 10 58309 0.1817 0.4226 0.07190 2018 7 11 58310 0.1830 0.4216 0.07185 2018 7 12 58311 0.1844 0.4205 0.07189 2018 7 13 58312 0.1859 0.4195 0.07195 2018 7 14 58313 0.1873 0.4185 0.07197 2018 7 15 58314 0.1885 0.4175 0.07190 2018 7 16 58315 0.1898 0.4164 0.07174 2018 7 17 58316 0.1909 0.4153 0.07154 2018 7 18 58317 0.1921 0.4142 0.07137 2018 7 19 58318 0.1933 0.4130 0.07126 2018 7 20 58319 0.1944 0.4118 0.07127 2018 7 21 58320 0.1955 0.4107 0.07142 2018 7 22 58321 0.1966 0.4094 0.07173 2018 7 23 58322 0.1976 0.4082 0.07220 2018 7 24 58323 0.1987 0.4069 0.07278 2018 7 25 58324 0.1997 0.4056 0.07343 2018 7 26 58325 0.2007 0.4043 0.07410 2018 7 27 58326 0.2017 0.4030 0.07476 2018 7 28 58327 0.2027 0.4018 0.07534 2018 7 29 58328 0.2035 0.4005 0.07581 2018 7 30 58329 0.2043 0.3992 0.07614 2018 7 31 58330 0.2051 0.3979 0.07632 2018 8 1 58331 0.2058 0.3965 0.07634 2018 8 2 58332 0.2065 0.3952 0.07624 2018 8 3 58333 0.2072 0.3938 0.07604 2018 8 4 58334 0.2078 0.3924 0.07579 2018 8 5 58335 0.2085 0.3911 0.07555 2018 8 6 58336 0.2090 0.3897 0.07535 2018 8 7 58337 0.2096 0.3883 0.07523 2018 8 8 58338 0.2101 0.3868 0.07519 2018 8 9 58339 0.2105 0.3854 0.07519 2018 8 10 58340 0.2110 0.3840 0.07516 2018 8 11 58341 0.2114 0.3825 0.07503 2018 8 12 58342 0.2118 0.3811 0.07475 2018 8 13 58343 0.2121 0.3796 0.07430 2018 8 14 58344 0.2124 0.3781 0.07375 2018 8 15 58345 0.2127 0.3767 0.07317 2018 8 16 58346 0.2130 0.3752 0.07265 2018 8 17 58347 0.2132 0.3737 0.07225 2018 8 18 58348 0.2134 0.3722 0.07199 2018 8 19 58349 0.2136 0.3707 0.07189 2018 8 20 58350 0.2137 0.3692 0.07191 2018 8 21 58351 0.2138 0.3677 0.07203 2018 8 22 58352 0.2139 0.3662 0.07221 2018 8 23 58353 0.2139 0.3647 0.07239 2018 8 24 58354 0.2139 0.3632 0.07254 2018 8 25 58355 0.2139 0.3617 0.07262 2018 8 26 58356 0.2138 0.3602 0.07258 2018 8 27 58357 0.2137 0.3587 0.07243 2018 8 28 58358 0.2136 0.3572 0.07215 2018 8 29 58359 0.2135 0.3557 0.07176 2018 8 30 58360 0.2133 0.3542 0.07130 2018 8 31 58361 0.2131 0.3527 0.07081 2018 9 1 58362 0.2128 0.3512 0.07034 2018 9 2 58363 0.2126 0.3497 0.06992 2018 9 3 58364 0.2123 0.3482 0.06958 2018 9 4 58365 0.2119 0.3467 0.06933 2018 9 5 58366 0.2116 0.3452 0.06913 2018 9 6 58367 0.2112 0.3437 0.06891 2018 9 7 58368 0.2108 0.3422 0.06860 2018 9 8 58369 0.2103 0.3408 0.06813 2018 9 9 58370 0.2098 0.3393 0.06747 2018 9 10 58371 0.2093 0.3379 0.06665 2018 9 11 58372 0.2088 0.3364 0.06574 2018 9 12 58373 0.2082 0.3350 0.06483 2018 9 13 58374 0.2077 0.3335 0.06401 2018 9 14 58375 0.2070 0.3321 0.06333 2018 9 15 58376 0.2064 0.3307 0.06283 2018 9 16 58377 0.2057 0.3293 0.06247 2018 9 17 58378 0.2050 0.3279 0.06225 2018 9 18 58379 0.2043 0.3265 0.06210 2018 9 19 58380 0.2035 0.3251 0.06198 2018 9 20 58381 0.2027 0.3237 0.06184 2018 9 21 58382 0.2019 0.3223 0.06162 2018 9 22 58383 0.2011 0.3210 0.06130 2018 9 23 58384 0.2002 0.3197 0.06084 2018 9 24 58385 0.1993 0.3183 0.06024 2018 9 25 58386 0.1984 0.3170 0.05950 2018 9 26 58387 0.1975 0.3157 0.05865 2018 9 27 58388 0.1965 0.3144 0.05774 2018 9 28 58389 0.1955 0.3132 0.05684 2018 9 29 58390 0.1945 0.3119 0.05598 2018 9 30 58391 0.1934 0.3107 0.05520 2018 10 1 58392 0.1924 0.3095 0.05451 2018 10 2 58393 0.1913 0.3082 0.05386 2018 10 3 58394 0.1902 0.3071 0.05322 2018 10 4 58395 0.1890 0.3059 0.05252 2018 10 5 58396 0.1879 0.3047 0.05168 2018 10 6 58397 0.1867 0.3036 0.05066 2018 10 7 58398 0.1855 0.3024 0.04947 2018 10 8 58399 0.1843 0.3013 0.04814 2018 10 9 58400 0.1830 0.3002 0.04676 2018 10 10 58401 0.1817 0.2992 0.04543 2018 10 11 58402 0.1804 0.2981 0.04423 2018 10 12 58403 0.1791 0.2971 0.04320 2018 10 13 58404 0.1778 0.2961 0.04235 2018 10 14 58405 0.1765 0.2951 0.04165 2018 10 15 58406 0.1751 0.2941 0.04106 2018 10 16 58407 0.1737 0.2932 0.04054 2018 10 17 58408 0.1723 0.2922 0.04001 2018 10 18 58409 0.1709 0.2913 0.03944 2018 10 19 58410 0.1694 0.2904 0.03877 2018 10 20 58411 0.1680 0.2895 0.03798 2018 10 21 58412 0.1665 0.2887 0.03705 2018 10 22 58413 0.1650 0.2879 0.03598 2018 10 23 58414 0.1635 0.2871 0.03479 2018 10 24 58415 0.1619 0.2863 0.03354 2018 10 25 58416 0.1604 0.2855 0.03228 2018 10 26 58417 0.1589 0.2848 0.03107 2018 10 27 58418 0.1573 0.2841 0.02997 2018 10 28 58419 0.1557 0.2834 0.02899 2018 10 29 58420 0.1541 0.2827 0.02812 2018 10 30 58421 0.1525 0.2821 0.02729 2018 10 31 58422 0.1509 0.2815 0.02645 2018 11 1 58423 0.1492 0.2809 0.02551 2018 11 2 58424 0.1476 0.2803 0.02443 2018 11 3 58425 0.1459 0.2798 0.02319 2018 11 4 58426 0.1443 0.2793 0.02181 2018 11 5 58427 0.1426 0.2788 0.02035 2018 11 6 58428 0.1409 0.2783 0.01891 2018 11 7 58429 0.1392 0.2779 0.01755 2018 11 8 58430 0.1375 0.2775 0.01634 2018 11 9 58431 0.1358 0.2771 0.01530 2018 11 10 58432 0.1341 0.2767 0.01442 2018 11 11 58433 0.1323 0.2764 0.01369 2018 11 12 58434 0.1306 0.2761 0.01304 2018 11 13 58435 0.1289 0.2758 0.01243 2018 11 14 58436 0.1271 0.2755 0.01181 2018 11 15 58437 0.1254 0.2753 0.01112 2018 11 16 58438 0.1236 0.2751 0.01034 2018 11 17 58439 0.1219 0.2749 0.00943 2018 11 18 58440 0.1201 0.2748 0.00841 2018 11 19 58441 0.1183 0.2747 0.00727 2018 11 20 58442 0.1166 0.2746 0.00605 2018 11 21 58443 0.1148 0.2745 0.00480 2018 11 22 58444 0.1130 0.2745 0.00358 2018 11 23 58445 0.1113 0.2744 0.00245 2018 11 24 58446 0.1095 0.2745 0.00145 2018 11 25 58447 0.1077 0.2745 0.00058 2018 11 26 58448 0.1060 0.2746 -0.00021 2018 11 27 58449 0.1042 0.2747 -0.00098 2018 11 28 58450 0.1024 0.2748 -0.00181 2018 11 29 58451 0.1007 0.2749 -0.00275 2018 11 30 58452 0.0989 0.2751 -0.00383 2018 12 1 58453 0.0971 0.2753 -0.00503 2018 12 2 58454 0.0954 0.2755 -0.00629 2018 12 3 58455 0.0936 0.2758 -0.00755 2018 12 4 58456 0.0919 0.2761 -0.00874 2018 12 5 58457 0.0901 0.2764 -0.00980 2018 12 6 58458 0.0884 0.2767 -0.01069 2018 12 7 58459 0.0867 0.2771 -0.01141 2018 12 8 58460 0.0850 0.2775 -0.01198 2018 12 9 58461 0.0832 0.2779 -0.01245 2018 12 10 58462 0.0815 0.2784 -0.01285 2018 12 11 58463 0.0798 0.2788 -0.01324 2018 12 12 58464 0.0782 0.2793 -0.01367 2018 12 13 58465 0.0765 0.2799 -0.01419 2018 12 14 58466 0.0748 0.2804 -0.01480 2018 12 15 58467 0.0731 0.2810 -0.01554 2018 12 16 58468 0.0715 0.2816 -0.01638 2018 12 17 58469 0.0699 0.2822 -0.01731 2018 12 18 58470 0.0682 0.2829 -0.01830 2018 12 19 58471 0.0666 0.2836 -0.01929 2018 12 20 58472 0.0650 0.2843 -0.02023 2018 12 21 58473 0.0635 0.2850 -0.02108 2018 12 22 58474 0.0619 0.2858 -0.02180 2018 12 23 58475 0.0603 0.2865 -0.02242 2018 12 24 58476 0.0588 0.2873 -0.02300 2018 12 25 58477 0.0573 0.2882 -0.02363 2018 12 26 58478 0.0557 0.2890 -0.02437 2018 12 27 58479 0.0543 0.2899 -0.02525 2018 12 28 58480 0.0528 0.2908 -0.02625 2018 12 29 58481 0.0513 0.2917 -0.02732 2018 12 30 58482 0.0499 0.2927 -0.02838 2018 12 31 58483 0.0484 0.2936 -0.02936 2019 1 1 58484 0.0470 0.2946 -0.03020 2019 1 2 58485 0.0457 0.2956 -0.03086 2019 1 3 58486 0.0443 0.2967 -0.03134 2019 1 4 58487 0.0429 0.2977 -0.03166 2019 1 5 58488 0.0416 0.2988 -0.03184 2019 1 6 58489 0.0403 0.2999 -0.03193 2019 1 7 58490 0.0390 0.3010 -0.03199 2019 1 8 58491 0.0378 0.3022 -0.03206 2019 1 9 58492 0.0365 0.3033 -0.03219 2019 1 10 58493 0.0353 0.3045 -0.03242 2019 1 11 58494 0.0341 0.3057 -0.03278 2019 1 12 58495 0.0329 0.3069 -0.03327 2019 1 13 58496 0.0318 0.3082 -0.03390 2019 1 14 58497 0.0306 0.3094 -0.03462 2019 1 15 58498 0.0295 0.3107 -0.03539 2019 1 16 58499 0.0284 0.3120 -0.03616 2019 1 17 58500 0.0274 0.3133 -0.03686 2019 1 18 58501 0.0264 0.3146 -0.03744 2019 1 19 58502 0.0254 0.3160 -0.03790 2019 1 20 58503 0.0244 0.3173 -0.03828 2019 1 21 58504 0.0234 0.3187 -0.03869 2019 1 22 58505 0.0225 0.3201 -0.03921 2019 1 23 58506 0.0216 0.3215 -0.03994 2019 1 24 58507 0.0207 0.3229 -0.04088 2019 1 25 58508 0.0199 0.3244 -0.04200 2019 1 26 58509 0.0190 0.3258 -0.04320 2019 1 27 58510 0.0182 0.3273 -0.04439 2019 1 28 58511 0.0175 0.3288 -0.04548 2019 1 29 58512 0.0167 0.3303 -0.04643 2019 1 30 58513 0.0160 0.3318 -0.04722 2019 1 31 58514 0.0154 0.3333 -0.04787 2019 2 1 58515 0.0147 0.3348 -0.04842 2019 2 2 58516 0.0141 0.3363 -0.04892 2019 2 3 58517 0.0135 0.3379 -0.04941 2019 2 4 58518 0.0129 0.3394 -0.04995 2019 2 5 58519 0.0124 0.3410 -0.05057 2019 2 6 58520 0.0119 0.3426 -0.05131 2019 2 7 58521 0.0114 0.3442 -0.05218 2019 2 8 58522 0.0110 0.3458 -0.05319 2019 2 9 58523 0.0105 0.3474 -0.05434 2019 2 10 58524 0.0102 0.3490 -0.05562 2019 2 11 58525 0.0098 0.3506 -0.05697 2019 2 12 58526 0.0095 0.3522 -0.05834 2019 2 13 58527 0.0092 0.3538 -0.05969 2019 2 14 58528 0.0089 0.3555 -0.06097 2019 2 15 58529 0.0087 0.3571 -0.06215 2019 2 16 58530 0.0085 0.3587 -0.06327 2019 2 17 58531 0.0083 0.3604 -0.06441 2019 2 18 58532 0.0082 0.3620 -0.06563 2019 2 19 58533 0.0081 0.3637 -0.06697 2019 2 20 58534 0.0080 0.3653 -0.06848 2019 2 21 58535 0.0080 0.3670 -0.07016 2019 2 22 58536 0.0080 0.3687 -0.07195 2019 2 23 58537 0.0080 0.3703 -0.07369 2019 2 24 58538 0.0080 0.3720 -0.07530 2019 2 25 58539 0.0081 0.3736 -0.07672 2019 2 26 58540 0.0082 0.3753 -0.07790 2019 2 27 58541 0.0084 0.3770 -0.07883 2019 2 28 58542 0.0085 0.3786 -0.07959 2019 3 1 58543 0.0088 0.3803 -0.08032 2019 3 2 58544 0.0090 0.3819 -0.08105 2019 3 3 58545 0.0093 0.3836 -0.08179 2019 3 4 58546 0.0096 0.3852 -0.08256 2019 3 5 58547 0.0099 0.3869 -0.08344 2019 3 6 58548 0.0103 0.3885 -0.08450 2019 3 7 58549 0.0107 0.3901 -0.08575 2019 3 8 58550 0.0111 0.3918 -0.08710 2019 3 9 58551 0.0115 0.3934 -0.08853 2019 3 10 58552 0.0120 0.3950 -0.09003 2019 3 11 58553 0.0126 0.3966 -0.09155 2019 3 12 58554 0.0131 0.3982 -0.09302 2019 3 13 58555 0.0137 0.3998 -0.09437 2019 3 14 58556 0.0143 0.4014 -0.09558 2019 3 15 58557 0.0149 0.4030 -0.09668 2019 3 16 58558 0.0156 0.4046 -0.09774 2019 3 17 58559 0.0163 0.4061 -0.09883 2019 3 18 58560 0.0170 0.4077 -0.10002 2019 3 19 58561 0.0178 0.4092 -0.10142 2019 3 20 58562 0.0186 0.4108 -0.10305 2019 3 21 58563 0.0194 0.4123 -0.10486 2019 3 22 58564 0.0202 0.4138 -0.10673 2019 3 23 58565 0.0211 0.4153 -0.10852 2019 3 24 58566 0.0220 0.4168 -0.11014 2019 3 25 58567 0.0229 0.4182 -0.11158 2019 3 26 58568 0.0239 0.4197 -0.11278 2019 3 27 58569 0.0249 0.4211 -0.11389 2019 3 28 58570 0.0259 0.4226 -0.11489 2019 3 29 58571 0.0269 0.4240 -0.11583 2019 3 30 58572 0.0280 0.4254 -0.11679 2019 3 31 58573 0.0291 0.4268 -0.11780 2019 4 1 58574 0.0302 0.4281 -0.11889 2019 4 2 58575 0.0313 0.4295 -0.12012 2019 4 3 58576 0.0325 0.4308 -0.12151 2019 4 4 58577 0.0337 0.4321 -0.12296 2019 4 5 58578 0.0349 0.4334 -0.12447 2019 4 6 58579 0.0362 0.4347 -0.12603 2019 4 7 58580 0.0374 0.4360 -0.12753 2019 4 8 58581 0.0387 0.4372 -0.12893 2019 4 9 58582 0.0400 0.4385 -0.13017 2019 4 10 58583 0.0414 0.4397 -0.13123 2019 4 11 58584 0.0427 0.4408 -0.13216 2019 4 12 58585 0.0441 0.4420 -0.13303 2019 4 13 58586 0.0455 0.4432 -0.13386 2019 4 14 58587 0.0470 0.4443 -0.13476 2019 4 15 58588 0.0484 0.4454 -0.13579 2019 4 16 58589 0.0499 0.4465 -0.13703 2019 4 17 58590 0.0514 0.4475 -0.13846 2019 4 18 58591 0.0529 0.4486 -0.14002 2019 4 19 58592 0.0544 0.4496 -0.14153 2019 4 20 58593 0.0559 0.4506 -0.14296 2019 4 21 58594 0.0575 0.4515 -0.14419 2019 4 22 58595 0.0591 0.4525 -0.14519 2019 4 23 58596 0.0607 0.4534 -0.14603 2019 4 24 58597 0.0623 0.4543 -0.14675 2019 4 25 58598 0.0639 0.4551 -0.14752 2019 4 26 58599 0.0656 0.4560 -0.14829 2019 4 27 58600 0.0672 0.4568 -0.14909 2019 4 28 58601 0.0689 0.4576 -0.14987 2019 4 29 58602 0.0706 0.4584 -0.15072 2019 4 30 58603 0.0723 0.4591 -0.15163 2019 5 1 58604 0.0740 0.4598 -0.15268 2019 5 2 58605 0.0758 0.4605 -0.15385 2019 5 3 58606 0.0775 0.4612 -0.15507 2019 5 4 58607 0.0793 0.4618 -0.15633 2019 5 5 58608 0.0811 0.4624 -0.15752 2019 5 6 58609 0.0829 0.4630 -0.15866 2019 5 7 58610 0.0846 0.4636 -0.15969 2019 5 8 58611 0.0865 0.4641 -0.16057 2019 5 9 58612 0.0883 0.4646 -0.16133 2019 5 10 58613 0.0901 0.4651 -0.16198 2019 5 11 58614 0.0919 0.4655 -0.16271 2019 5 12 58615 0.0938 0.4659 -0.16356 2019 5 13 58616 0.0956 0.4663 -0.16456 2019 5 14 58617 0.0975 0.4667 -0.16576 2019 5 15 58618 0.0993 0.4670 -0.16707 2019 5 16 58619 0.1012 0.4673 -0.16843 2019 5 17 58620 0.1031 0.4676 -0.16971 2019 5 18 58621 0.1049 0.4679 -0.17084 2019 5 19 58622 0.1068 0.4681 -0.17178 2019 5 20 58623 0.1087 0.4683 -0.17247 2019 5 21 58624 0.1106 0.4684 -0.17295 2019 5 22 58625 0.1125 0.4685 -0.17329 2019 5 23 58626 0.1144 0.4686 -0.17361 2019 5 24 58627 0.1163 0.4687 -0.17393 2019 5 25 58628 0.1182 0.4688 -0.17428 2019 5 26 58629 0.1201 0.4688 -0.17463 2019 5 27 58630 0.1220 0.4688 -0.17509 2019 5 28 58631 0.1239 0.4687 -0.17562 2019 5 29 58632 0.1258 0.4686 -0.17620 2019 5 30 58633 0.1277 0.4685 -0.17684 2019 5 31 58634 0.1295 0.4684 -0.17752 2019 6 1 58635 0.1314 0.4682 -0.17820 2019 6 2 58636 0.1333 0.4680 -0.17873 2019 6 3 58637 0.1352 0.4678 -0.17917 2019 6 4 58638 0.1371 0.4676 -0.17955 2019 6 5 58639 0.1389 0.4673 -0.17980 2019 6 6 58640 0.1408 0.4670 -0.17998 2019 6 7 58641 0.1427 0.4666 -0.18025 2019 6 8 58642 0.1445 0.4663 -0.18060 2019 6 9 58643 0.1464 0.4659 -0.18114 2019 6 10 58644 0.1482 0.4654 -0.18186 2019 6 11 58645 0.1500 0.4650 -0.18272 2019 6 12 58646 0.1518 0.4645 -0.18366 2019 6 13 58647 0.1536 0.4640 -0.18460 2019 6 14 58648 0.1554 0.4634 -0.18548 2019 6 15 58649 0.1572 0.4629 -0.18622 2019 6 16 58650 0.1590 0.4623 -0.18675 2019 6 17 58651 0.1608 0.4616 -0.18710 2019 6 18 58652 0.1625 0.4610 -0.18733 2019 6 19 58653 0.1643 0.4603 -0.18749 2019 6 20 58654 0.1660 0.4596 -0.18770 2019 6 21 58655 0.1677 0.4589 -0.18789 2019 6 22 58656 0.1694 0.4581 -0.18813 2019 6 23 58657 0.1711 0.4573 -0.18847 2019 6 24 58658 0.1728 0.4565 -0.18892 2019 6 25 58659 0.1744 0.4557 -0.18949 2019 6 26 58660 0.1760 0.4548 -0.19016 2019 6 27 58661 0.1777 0.4539 -0.19089 2019 6 28 58662 0.1793 0.4530 -0.19158 2019 6 29 58663 0.1809 0.4520 -0.19222 2019 6 30 58664 0.1824 0.4511 -0.19273 2019 7 1 58665 0.1840 0.4501 -0.19304 2019 7 2 58666 0.1855 0.4490 -0.19320 2019 7 3 58667 0.1870 0.4480 -0.19328 2019 7 4 58668 0.1885 0.4469 -0.19340 2019 7 5 58669 0.1900 0.4458 -0.19366 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) 58278 -105.42 0.31 -11.94 0.10 58279 -106.06 0.32 -11.88 0.09 58280 -106.31 0.32 -11.75 0.09 58281 -106.43 0.35 -11.68 0.02 58282 -106.68 0.49 -11.81 0.17 58283 -106.99 0.49 -12.05 0.17 58284 -107.05 0.49 -12.15 0.17 58285 -106.79 0.50 -12.01 0.18 58286 -106.50 0.48 -11.77 0.17 58287 -106.43 0.48 -11.65 0.17 58288 -106.62 0.26 -11.65 0.02 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 58240 -102.5 -11.8 58241 -102.7 -11.9 58242 -102.8 -12.1 58243 -102.8 -12.2 58244 -102.7 -12.3 58245 -102.4 -12.4 58246 -102.1 -12.4 58247 -101.7 -12.4 58248 -101.6 -12.3 58249 -101.9 -12.3 58250 -102.4 -12.1 58251 -102.8 -12.0 58252 -102.8 -11.9 58253 -102.9 -12.0 58254 -103.2 -12.3 58255 -103.6 -12.6 58256 -103.8 -12.7 58257 -103.8 -12.5 58258 -103.7 -12.2 58259 -103.5 -12.0 58260 -103.4 -12.0 58261 -103.2 -12.1 58262 -103.0 -12.2 58263 -103.0 -12.2 58264 -103.3 -12.1 58265 -103.7 -12.0 58266 -104.0 -11.9 58267 -104.2 -11.8 58268 -104.7 -12.0 58269 -104.8 -12.1 58270 -104.9 -12.2 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 58278 -0.135 0.124 -0.106 0.097 58279 -0.144 0.125 -0.107 0.090 58280 -0.154 0.125 -0.110 0.090 58281 -0.165 0.141 -0.115 0.017 58282 -0.175 0.194 -0.124 0.167 58283 -0.182 0.194 -0.134 0.167 58284 -0.186 0.194 -0.138 0.167 58285 -0.184 0.199 -0.132 0.183 58286 -0.177 0.189 -0.117 0.167 58287 -0.167 0.189 -0.095 0.167 58288 -0.154 0.105 -0.068 0.019 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 58240 -0.06 -0.05 58241 -0.05 -0.09 58242 -0.04 -0.12 58243 -0.04 -0.13 58244 -0.03 -0.14 58245 -0.02 -0.14 58246 -0.01 -0.14 58247 -0.01 -0.14 58248 0.00 -0.15 58249 0.01 -0.15 58250 0.00 -0.15 58251 -0.01 -0.15 58252 -0.02 -0.16 58253 -0.04 -0.16 58254 -0.05 -0.16 58255 -0.06 -0.17 58256 -0.07 -0.17 58257 -0.08 -0.16 58258 -0.08 -0.15 58259 -0.09 -0.14 58260 -0.09 -0.13 58261 -0.10 -0.12 58262 -0.10 -0.12 58263 -0.10 -0.11 58264 -0.11 -0.10 58265 -0.11 -0.10 58266 -0.11 -0.10 58267 -0.11 -0.10 58268 -0.27 -0.18 58269 -0.29 -0.13 58270 -0.30 -0.13 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).