********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 16 February 2017 Vol. XXX No. 007 ______________________________________________________________________ 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 = +0.5 seconds beginning 26 Jan 2017 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 by available by 20:00 UTC. * * * * Due to unforeseen circumstances, the future date on which the * * IERS RS/PC will transition to the new 14C04 EOP system has not yet * * been determined. We regret any inconvenience. * * * * 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 17 2 10 57794 0.01972 .00009 0.29403 .00010 0.542260 0.000011 17 2 11 57795 0.01813 .00009 0.29504 .00010 0.540844 0.000013 17 2 12 57796 0.01656 .00009 0.29609 .00009 0.539278 0.000015 17 2 13 57797 0.01503 .00009 0.29704 .00009 0.537663 0.000015 17 2 14 57798 0.01358 .00009 0.29797 .00009 0.535966 0.000015 17 2 15 57799 0.01214 .00009 0.29891 .00009 0.534311 0.000014 17 2 16 57800 0.01073 .00009 0.29981 .00009 0.532675 0.000013 _______________________________________________________________________ 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 = 0.1040 - 0.0909 cos A - 0.0184 sin A - 0.0054 cos C - 0.0403 sin C y = 0.3633 - 0.0191 cos A + 0.0850 sin A - 0.0403 cos C + 0.0054 sin C UT1-UTC = 0.5309 - 0.00123 (MJD - 57808) - (UT2-UT1) where A = 2*pi*(MJD-57800)/365.25 and C = 2*pi*(MJD-57800)/435. TAI-UTC(MJD 57801) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57800)**0.80 S t = 0.00025 (MJD-57800)**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) 2017 2 17 57801 0.0095 0.3008 0.53119 2017 2 18 57802 0.0084 0.3019 0.52988 2017 2 19 57803 0.0074 0.3031 0.52871 2017 2 20 57804 0.0065 0.3045 0.52768 2017 2 21 57805 0.0056 0.3058 0.52677 2017 2 22 57806 0.0049 0.3073 0.52593 2017 2 23 57807 0.0042 0.3087 0.52509 2017 2 24 57808 0.0036 0.3102 0.52418 2017 2 25 57809 0.0028 0.3118 0.52314 2017 2 26 57810 0.0021 0.3134 0.52189 2017 2 27 57811 0.0013 0.3150 0.52040 2017 2 28 57812 0.0006 0.3166 0.51867 2017 3 1 57813 -0.0002 0.3182 0.51676 2017 3 2 57814 -0.0008 0.3198 0.51478 2017 3 3 57815 -0.0015 0.3215 0.51284 2017 3 4 57816 -0.0020 0.3231 0.51102 2017 3 5 57817 -0.0026 0.3247 0.50933 2017 3 6 57818 -0.0032 0.3264 0.50778 2017 3 7 57819 -0.0037 0.3280 0.50632 2017 3 8 57820 -0.0042 0.3297 0.50491 2017 3 9 57821 -0.0046 0.3313 0.50347 2017 3 10 57822 -0.0050 0.3330 0.50197 2017 3 11 57823 -0.0054 0.3347 0.50037 2017 3 12 57824 -0.0057 0.3364 0.49869 2017 3 13 57825 -0.0060 0.3381 0.49697 2017 3 14 57826 -0.0062 0.3398 0.49523 2017 3 15 57827 -0.0064 0.3415 0.49354 2017 3 16 57828 -0.0066 0.3432 0.49191 2017 3 17 57829 -0.0067 0.3450 0.49035 2017 3 18 57830 -0.0068 0.3467 0.48888 2017 3 19 57831 -0.0069 0.3484 0.48750 2017 3 20 57832 -0.0070 0.3502 0.48617 2017 3 21 57833 -0.0070 0.3519 0.48487 2017 3 22 57834 -0.0070 0.3537 0.48355 2017 3 23 57835 -0.0069 0.3554 0.48218 2017 3 24 57836 -0.0069 0.3572 0.48070 2017 3 25 57837 -0.0067 0.3589 0.47907 2017 3 26 57838 -0.0066 0.3607 0.47727 2017 3 27 57839 -0.0064 0.3624 0.47529 2017 3 28 57840 -0.0062 0.3642 0.47318 2017 3 29 57841 -0.0060 0.3659 0.47100 2017 3 30 57842 -0.0057 0.3676 0.46886 2017 3 31 57843 -0.0054 0.3694 0.46683 2017 4 1 57844 -0.0051 0.3711 0.46494 2017 4 2 57845 -0.0047 0.3728 0.46321 2017 4 3 57846 -0.0043 0.3745 0.46158 2017 4 4 57847 -0.0039 0.3762 0.46000 2017 4 5 57848 -0.0035 0.3779 0.45843 2017 4 6 57849 -0.0030 0.3796 0.45680 2017 4 7 57850 -0.0024 0.3813 0.45509 2017 4 8 57851 -0.0019 0.3830 0.45330 2017 4 9 57852 -0.0013 0.3847 0.45146 2017 4 10 57853 -0.0007 0.3864 0.44960 2017 4 11 57854 0.0000 0.3880 0.44777 2017 4 12 57855 0.0006 0.3897 0.44601 2017 4 13 57856 0.0013 0.3913 0.44434 2017 4 14 57857 0.0021 0.3929 0.44279 2017 4 15 57858 0.0028 0.3946 0.44134 2017 4 16 57859 0.0036 0.3962 0.43999 2017 4 17 57860 0.0045 0.3978 0.43871 2017 4 18 57861 0.0053 0.3993 0.43744 2017 4 19 57862 0.0062 0.4009 0.43615 2017 4 20 57863 0.0071 0.4025 0.43478 2017 4 21 57864 0.0080 0.4040 0.43329 2017 4 22 57865 0.0090 0.4055 0.43166 2017 4 23 57866 0.0100 0.4071 0.42985 2017 4 24 57867 0.0110 0.4086 0.42790 2017 4 25 57868 0.0120 0.4100 0.42584 2017 4 26 57869 0.0131 0.4115 0.42377 2017 4 27 57870 0.0142 0.4130 0.42178 2017 4 28 57871 0.0153 0.4144 0.41993 2017 4 29 57872 0.0165 0.4158 0.41825 2017 4 30 57873 0.0176 0.4172 0.41672 2017 5 1 57874 0.0188 0.4186 0.41529 2017 5 2 57875 0.0201 0.4200 0.41389 2017 5 3 57876 0.0213 0.4213 0.41248 2017 5 4 57877 0.0226 0.4226 0.41103 2017 5 5 57878 0.0239 0.4239 0.40953 2017 5 6 57879 0.0252 0.4252 0.40801 2017 5 7 57880 0.0265 0.4265 0.40649 2017 5 8 57881 0.0279 0.4278 0.40500 2017 5 9 57882 0.0292 0.4290 0.40358 2017 5 10 57883 0.0306 0.4302 0.40226 2017 5 11 57884 0.0321 0.4314 0.40105 2017 5 12 57885 0.0335 0.4325 0.39996 2017 5 13 57886 0.0350 0.4337 0.39898 2017 5 14 57887 0.0365 0.4348 0.39809 2017 5 15 57888 0.0380 0.4359 0.39725 2017 5 16 57889 0.0395 0.4370 0.39643 2017 5 17 57890 0.0410 0.4380 0.39557 2017 5 18 57891 0.0426 0.4391 0.39463 2017 5 19 57892 0.0441 0.4401 0.39357 2017 5 20 57893 0.0457 0.4411 0.39236 2017 5 21 57894 0.0473 0.4420 0.39101 2017 5 22 57895 0.0490 0.4430 0.38954 2017 5 23 57896 0.0506 0.4439 0.38800 2017 5 24 57897 0.0522 0.4448 0.38649 2017 5 25 57898 0.0539 0.4456 0.38507 2017 5 26 57899 0.0556 0.4464 0.38381 2017 5 27 57900 0.0573 0.4473 0.38271 2017 5 28 57901 0.0590 0.4480 0.38173 2017 5 29 57902 0.0607 0.4488 0.38081 2017 5 30 57903 0.0624 0.4495 0.37989 2017 5 31 57904 0.0642 0.4502 0.37894 2017 6 1 57905 0.0659 0.4509 0.37794 2017 6 2 57906 0.0677 0.4516 0.37692 2017 6 3 57907 0.0695 0.4522 0.37590 2017 6 4 57908 0.0712 0.4528 0.37491 2017 6 5 57909 0.0730 0.4534 0.37401 2017 6 6 57910 0.0748 0.4539 0.37320 2017 6 7 57911 0.0766 0.4544 0.37251 2017 6 8 57912 0.0784 0.4549 0.37193 2017 6 9 57913 0.0803 0.4554 0.37146 2017 6 10 57914 0.0821 0.4558 0.37109 2017 6 11 57915 0.0839 0.4562 0.37078 2017 6 12 57916 0.0858 0.4566 0.37049 2017 6 13 57917 0.0876 0.4570 0.37018 2017 6 14 57918 0.0894 0.4573 0.36980 2017 6 15 57919 0.0913 0.4576 0.36933 2017 6 16 57920 0.0931 0.4579 0.36872 2017 6 17 57921 0.0950 0.4581 0.36799 2017 6 18 57922 0.0968 0.4583 0.36714 2017 6 19 57923 0.0987 0.4585 0.36621 2017 6 20 57924 0.1006 0.4587 0.36525 2017 6 21 57925 0.1024 0.4588 0.36434 2017 6 22 57926 0.1043 0.4589 0.36355 2017 6 23 57927 0.1061 0.4589 0.36289 2017 6 24 57928 0.1080 0.4590 0.36236 2017 6 25 57929 0.1098 0.4590 0.36190 2017 6 26 57930 0.1117 0.4590 0.36144 2017 6 27 57931 0.1135 0.4590 0.36094 2017 6 28 57932 0.1154 0.4589 0.36038 2017 6 29 57933 0.1172 0.4588 0.35976 2017 6 30 57934 0.1191 0.4587 0.35914 2017 7 1 57935 0.1209 0.4585 0.35854 2017 7 2 57936 0.1227 0.4583 0.35800 2017 7 3 57937 0.1245 0.4581 0.35755 2017 7 4 57938 0.1264 0.4579 0.35720 2017 7 5 57939 0.1282 0.4576 0.35697 2017 7 6 57940 0.1300 0.4573 0.35685 2017 7 7 57941 0.1317 0.4570 0.35681 2017 7 8 57942 0.1335 0.4567 0.35684 2017 7 9 57943 0.1353 0.4563 0.35688 2017 7 10 57944 0.1371 0.4559 0.35691 2017 7 11 57945 0.1388 0.4555 0.35686 2017 7 12 57946 0.1406 0.4550 0.35671 2017 7 13 57947 0.1423 0.4545 0.35643 2017 7 14 57948 0.1440 0.4540 0.35602 2017 7 15 57949 0.1457 0.4535 0.35548 2017 7 16 57950 0.1474 0.4529 0.35485 2017 7 17 57951 0.1491 0.4524 0.35418 2017 7 18 57952 0.1508 0.4518 0.35352 2017 7 19 57953 0.1524 0.4511 0.35294 2017 7 20 57954 0.1541 0.4505 0.35246 2017 7 21 57955 0.1557 0.4498 0.35208 2017 7 22 57956 0.1573 0.4491 0.35178 2017 7 23 57957 0.1589 0.4483 0.35147 2017 7 24 57958 0.1605 0.4476 0.35111 2017 7 25 57959 0.1620 0.4468 0.35066 2017 7 26 57960 0.1636 0.4460 0.35012 2017 7 27 57961 0.1651 0.4452 0.34953 2017 7 28 57962 0.1666 0.4443 0.34893 2017 7 29 57963 0.1681 0.4434 0.34836 2017 7 30 57964 0.1696 0.4425 0.34787 2017 7 31 57965 0.1710 0.4416 0.34748 2017 8 1 57966 0.1725 0.4407 0.34719 2017 8 2 57967 0.1739 0.4397 0.34701 2017 8 3 57968 0.1753 0.4387 0.34691 2017 8 4 57969 0.1766 0.4377 0.34686 2017 8 5 57970 0.1780 0.4367 0.34683 2017 8 6 57971 0.1793 0.4357 0.34678 2017 8 7 57972 0.1806 0.4346 0.34665 2017 8 8 57973 0.1819 0.4335 0.34641 2017 8 9 57974 0.1832 0.4324 0.34603 2017 8 10 57975 0.1844 0.4313 0.34549 2017 8 11 57976 0.1856 0.4301 0.34482 2017 8 12 57977 0.1868 0.4290 0.34404 2017 8 13 57978 0.1880 0.4278 0.34322 2017 8 14 57979 0.1891 0.4266 0.34241 2017 8 15 57980 0.1903 0.4254 0.34166 2017 8 16 57981 0.1914 0.4242 0.34100 2017 8 17 57982 0.1924 0.4229 0.34045 2017 8 18 57983 0.1935 0.4216 0.33997 2017 8 19 57984 0.1945 0.4204 0.33952 2017 8 20 57985 0.1955 0.4191 0.33903 2017 8 21 57986 0.1965 0.4178 0.33846 2017 8 22 57987 0.1974 0.4164 0.33779 2017 8 23 57988 0.1983 0.4151 0.33705 2017 8 24 57989 0.1992 0.4137 0.33627 2017 8 25 57990 0.2001 0.4124 0.33550 2017 8 26 57991 0.2009 0.4110 0.33479 2017 8 27 57992 0.2017 0.4096 0.33415 2017 8 28 57993 0.2025 0.4082 0.33360 2017 8 29 57994 0.2032 0.4068 0.33312 2017 8 30 57995 0.2040 0.4054 0.33271 2017 8 31 57996 0.2047 0.4039 0.33233 2017 9 1 57997 0.2053 0.4025 0.33195 2017 9 2 57998 0.2060 0.4010 0.33153 2017 9 3 57999 0.2066 0.3996 0.33103 2017 9 4 58000 0.2072 0.3981 0.33039 2017 9 5 58001 0.2077 0.3966 0.32959 2017 9 6 58002 0.2082 0.3951 0.32862 2017 9 7 58003 0.2087 0.3936 0.32746 2017 9 8 58004 0.2092 0.3921 0.32616 2017 9 9 58005 0.2096 0.3906 0.32478 2017 9 10 58006 0.2100 0.3891 0.32337 2017 9 11 58007 0.2104 0.3875 0.32200 2017 9 12 58008 0.2108 0.3860 0.32071 2017 9 13 58009 0.2111 0.3845 0.31950 2017 9 14 58010 0.2114 0.3829 0.31835 2017 9 15 58011 0.2116 0.3814 0.31723 2017 9 16 58012 0.2118 0.3798 0.31608 2017 9 17 58013 0.2120 0.3783 0.31484 2017 9 18 58014 0.2122 0.3767 0.31350 2017 9 19 58015 0.2124 0.3752 0.31205 2017 9 20 58016 0.2125 0.3736 0.31055 2017 9 21 58017 0.2125 0.3720 0.30903 2017 9 22 58018 0.2126 0.3705 0.30757 2017 9 23 58019 0.2126 0.3689 0.30622 2017 9 24 58020 0.2126 0.3673 0.30502 2017 9 25 58021 0.2126 0.3658 0.30399 2017 9 26 58022 0.2125 0.3642 0.30312 2017 9 27 58023 0.2124 0.3627 0.30236 2017 9 28 58024 0.2123 0.3611 0.30164 2017 9 29 58025 0.2121 0.3595 0.30084 2017 9 30 58026 0.2119 0.3580 0.29997 2017 10 1 58027 0.2117 0.3564 0.29899 2017 10 2 58028 0.2115 0.3549 0.29785 2017 10 3 58029 0.2112 0.3534 0.29660 2017 10 4 58030 0.2109 0.3518 0.29512 2017 10 5 58031 0.2105 0.3503 0.29354 2017 10 6 58032 0.2102 0.3488 0.29183 2017 10 7 58033 0.2098 0.3472 0.29008 2017 10 8 58034 0.2094 0.3457 0.28827 2017 10 9 58035 0.2089 0.3442 0.28653 2017 10 10 58036 0.2085 0.3427 0.28493 2017 10 11 58037 0.2080 0.3412 0.28343 2017 10 12 58038 0.2074 0.3397 0.28191 2017 10 13 58039 0.2069 0.3383 0.28040 2017 10 14 58040 0.2063 0.3368 0.27887 2017 10 15 58041 0.2057 0.3353 0.27721 2017 10 16 58042 0.2050 0.3339 0.27538 2017 10 17 58043 0.2044 0.3324 0.27343 2017 10 18 58044 0.2037 0.3310 0.27140 2017 10 19 58045 0.2030 0.3296 0.26929 2017 10 20 58046 0.2022 0.3282 0.26732 2017 10 21 58047 0.2014 0.3268 0.26547 2017 10 22 58048 0.2007 0.3254 0.26377 2017 10 23 58049 0.1998 0.3240 0.26220 2017 10 24 58050 0.1990 0.3227 0.26080 2017 10 25 58051 0.1981 0.3213 0.25949 2017 10 26 58052 0.1972 0.3200 0.25826 2017 10 27 58053 0.1963 0.3187 0.25706 2017 10 28 58054 0.1954 0.3174 0.25584 2017 10 29 58055 0.1944 0.3161 0.25450 2017 10 30 58056 0.1934 0.3148 0.25307 2017 10 31 58057 0.1924 0.3136 0.25153 2017 11 1 58058 0.1914 0.3123 0.24978 2017 11 2 58059 0.1903 0.3111 0.24790 2017 11 3 58060 0.1893 0.3099 0.24591 2017 11 4 58061 0.1882 0.3087 0.24398 2017 11 5 58062 0.1871 0.3076 0.24206 2017 11 6 58063 0.1859 0.3064 0.24020 2017 11 7 58064 0.1848 0.3053 0.23851 2017 11 8 58065 0.1836 0.3041 0.23691 2017 11 9 58066 0.1824 0.3030 0.23531 2017 11 10 58067 0.1812 0.3020 0.23369 2017 11 11 58068 0.1799 0.3009 0.23196 2017 11 12 58069 0.1787 0.2998 0.23007 2017 11 13 58070 0.1774 0.2988 0.22811 2017 11 14 58071 0.1761 0.2978 0.22603 2017 11 15 58072 0.1748 0.2968 0.22393 2017 11 16 58073 0.1735 0.2959 0.22189 2017 11 17 58074 0.1722 0.2949 0.21991 2017 11 18 58075 0.1708 0.2940 0.21801 2017 11 19 58076 0.1694 0.2931 0.21624 2017 11 20 58077 0.1681 0.2922 0.21462 2017 11 21 58078 0.1667 0.2913 0.21306 2017 11 22 58079 0.1653 0.2905 0.21150 2017 11 23 58080 0.1638 0.2897 0.20997 2017 11 24 58081 0.1624 0.2889 0.20839 2017 11 25 58082 0.1609 0.2881 0.20674 2017 11 26 58083 0.1595 0.2874 0.20490 2017 11 27 58084 0.1580 0.2867 0.20285 2017 11 28 58085 0.1565 0.2860 0.20065 2017 11 29 58086 0.1550 0.2853 0.19835 2017 11 30 58087 0.1535 0.2846 0.19606 2017 12 1 58088 0.1520 0.2840 0.19376 2017 12 2 58089 0.1505 0.2834 0.19154 2017 12 3 58090 0.1489 0.2828 0.18942 2017 12 4 58091 0.1474 0.2822 0.18740 2017 12 5 58092 0.1459 0.2817 0.18552 2017 12 6 58093 0.1443 0.2812 0.18379 2017 12 7 58094 0.1427 0.2807 0.18211 2017 12 8 58095 0.1412 0.2802 0.18045 2017 12 9 58096 0.1396 0.2798 0.17879 2017 12 10 58097 0.1380 0.2794 0.17711 2017 12 11 58098 0.1364 0.2790 0.17543 2017 12 12 58099 0.1348 0.2786 0.17368 2017 12 13 58100 0.1332 0.2783 0.17205 2017 12 14 58101 0.1316 0.2779 0.17044 2017 12 15 58102 0.1300 0.2777 0.16897 2017 12 16 58103 0.1284 0.2774 0.16764 2017 12 17 58104 0.1268 0.2771 0.16643 2017 12 18 58105 0.1252 0.2769 0.16537 2017 12 19 58106 0.1236 0.2767 0.16440 2017 12 20 58107 0.1220 0.2766 0.16356 2017 12 21 58108 0.1204 0.2764 0.16263 2017 12 22 58109 0.1187 0.2763 0.16167 2017 12 23 58110 0.1171 0.2762 0.16059 2017 12 24 58111 0.1155 0.2762 0.15945 2017 12 25 58112 0.1139 0.2761 0.15823 2017 12 26 58113 0.1123 0.2761 0.15688 2017 12 27 58114 0.1107 0.2761 0.15539 2017 12 28 58115 0.1091 0.2761 0.15375 2017 12 29 58116 0.1075 0.2762 0.15213 2017 12 30 58117 0.1059 0.2763 0.15061 2017 12 31 58118 0.1043 0.2764 0.14919 2018 1 1 58119 0.1028 0.2765 0.14788 2018 1 2 58120 0.1012 0.2767 0.14661 2018 1 3 58121 0.0996 0.2769 0.14547 2018 1 4 58122 0.0980 0.2771 0.14425 2018 1 5 58123 0.0965 0.2773 0.14292 2018 1 6 58124 0.0949 0.2775 0.14150 2018 1 7 58125 0.0934 0.2778 0.13997 2018 1 8 58126 0.0919 0.2781 0.13840 2018 1 9 58127 0.0904 0.2784 0.13686 2018 1 10 58128 0.0888 0.2788 0.13543 2018 1 11 58129 0.0873 0.2792 0.13411 2018 1 12 58130 0.0858 0.2796 0.13289 2018 1 13 58131 0.0844 0.2800 0.13192 2018 1 14 58132 0.0829 0.2804 0.13096 2018 1 15 58133 0.0814 0.2809 0.13019 2018 1 16 58134 0.0800 0.2814 0.12938 2018 1 17 58135 0.0785 0.2819 0.12853 2018 1 18 58136 0.0771 0.2824 0.12751 2018 1 19 58137 0.0757 0.2830 0.12637 2018 1 20 58138 0.0743 0.2836 0.12507 2018 1 21 58139 0.0729 0.2842 0.12361 2018 1 22 58140 0.0716 0.2848 0.12199 2018 1 23 58141 0.0702 0.2854 0.12027 2018 1 24 58142 0.0689 0.2861 0.11842 2018 1 25 58143 0.0676 0.2868 0.11655 2018 1 26 58144 0.0663 0.2875 0.11473 2018 1 27 58145 0.0650 0.2882 0.11311 2018 1 28 58146 0.0637 0.2889 0.11154 2018 1 29 58147 0.0624 0.2897 0.10995 2018 1 30 58148 0.0612 0.2905 0.10845 2018 1 31 58149 0.0600 0.2913 0.10676 2018 2 1 58150 0.0588 0.2921 0.10507 2018 2 2 58151 0.0576 0.2929 0.10328 2018 2 3 58152 0.0564 0.2938 0.10137 2018 2 4 58153 0.0553 0.2947 0.09942 2018 2 5 58154 0.0542 0.2956 0.09748 2018 2 6 58155 0.0531 0.2965 0.09557 2018 2 7 58156 0.0520 0.2974 0.09380 2018 2 8 58157 0.0509 0.2984 0.09222 2018 2 9 58158 0.0499 0.2993 0.09078 2018 2 10 58159 0.0489 0.3003 0.08939 2018 2 11 58160 0.0479 0.3013 0.08822 2018 2 12 58161 0.0469 0.3023 0.08701 2018 2 13 58162 0.0459 0.3033 0.08570 2018 2 14 58163 0.0450 0.3044 0.08428 2018 2 15 58164 0.0441 0.3054 0.08279 2018 2 16 58165 0.0432 0.3065 0.08120 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) 57772 -99.35 0.30 -8.96 0.04 57773 -99.68 0.30 -8.93 0.04 57774 -100.05 0.30 -8.96 0.04 57775 -100.30 0.30 -8.99 0.05 57776 -100.29 0.30 -8.98 0.05 57777 -100.12 0.30 -8.96 0.05 57778 -99.95 0.30 -9.02 0.04 57779 -99.82 0.30 -9.18 0.04 57780 -99.63 0.30 -9.39 0.04 57781 -99.36 0.13 -9.52 0.03 57782 -99.13 0.10 -9.50 0.02 57783 -99.06 0.10 -9.40 0.02 57784 -99.14 0.30 -9.34 0.15 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57772 0.116 0.119 -0.071 0.040 57773 0.093 0.119 -0.061 0.040 57774 0.057 0.119 -0.045 0.040 57775 0.019 0.119 -0.056 0.050 57776 -0.002 0.119 -0.086 0.050 57777 -0.013 0.119 -0.104 0.050 57778 -0.016 0.119 -0.113 0.040 57779 -0.014 0.119 -0.111 0.040 57780 -0.008 0.119 -0.127 0.040 57781 -0.007 0.052 -0.148 0.030 57782 -0.013 0.040 -0.159 0.020 57783 -0.016 0.040 -0.175 0.020 57784 -0.015 0.119 -0.209 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).