********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 9 March 2017 Vol. XXX 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 = +0.5 seconds beginning 26 Jan 2017 at 0000 UTC = +0.4 seconds beginning 30 Mar 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. * * * * It is anticipated that the IERS RS/PC will transition its EOP * * solution to be consistent with the ITRF 2014 system on * * 16-March-2017. If the transition cannot be done by that date, * * alternative dates to implement the change could be 23-March-2017 * * or 30-March-2017. * * * * 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 3 3 57815 0.00477 .00009 0.32639 .00009 0.513759 0.000017 17 3 4 57816 0.00498 .00009 0.32830 .00009 0.512258 0.000011 17 3 5 57817 0.00502 .00009 0.33007 .00009 0.510857 0.000011 17 3 6 57818 0.00464 .00009 0.33182 .00009 0.509541 0.000018 17 3 7 57819 0.00396 .00009 0.33348 .00009 0.508311 0.000018 17 3 8 57820 0.00354 .00009 0.33495 .00009 0.507023 0.000018 17 3 9 57821 0.00355 .00009 0.33628 .00009 0.505651 0.000018 _______________________________________________________________________ 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 = 0.1090 - 0.0878 cos A + 0.0161 sin A - 0.0207 cos C - 0.0398 sin C y = 0.3688 + 0.0123 cos A + 0.0817 sin A - 0.0398 cos C + 0.0207 sin C UT1-UTC = 0.5140 - 0.00120 (MJD - 57829) - (UT2-UT1) where A = 2*pi*(MJD-57821)/365.25 and C = 2*pi*(MJD-57821)/435. TAI-UTC(MJD 57822) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57821)**0.80 S t = 0.00025 (MJD-57821)**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 3 10 57822 0.0036 0.3377 0.50426 2017 3 11 57823 0.0038 0.3392 0.50281 2017 3 12 57824 0.0038 0.3408 0.50129 2017 3 13 57825 0.0039 0.3424 0.49973 2017 3 14 57826 0.0039 0.3441 0.49815 2017 3 15 57827 0.0039 0.3458 0.49662 2017 3 16 57828 0.0039 0.3475 0.49519 2017 3 17 57829 0.0038 0.3491 0.49387 2017 3 18 57830 0.0037 0.3508 0.49264 2017 3 19 57831 0.0037 0.3524 0.49147 2017 3 20 57832 0.0037 0.3540 0.49035 2017 3 21 57833 0.0038 0.3556 0.48927 2017 3 22 57834 0.0039 0.3572 0.48814 2017 3 23 57835 0.0041 0.3588 0.48697 2017 3 24 57836 0.0043 0.3604 0.48571 2017 3 25 57837 0.0045 0.3621 0.48433 2017 3 26 57838 0.0046 0.3637 0.48279 2017 3 27 57839 0.0048 0.3653 0.48109 2017 3 28 57840 0.0050 0.3668 0.47924 2017 3 29 57841 0.0053 0.3683 0.47732 2017 3 30 57842 0.0056 0.3698 0.47542 2017 3 31 57843 0.0060 0.3714 0.47360 2017 4 1 57844 0.0064 0.3729 0.47188 2017 4 2 57845 0.0068 0.3745 0.47028 2017 4 3 57846 0.0072 0.3760 0.46876 2017 4 4 57847 0.0077 0.3775 0.46728 2017 4 5 57848 0.0081 0.3791 0.46579 2017 4 6 57849 0.0086 0.3806 0.46426 2017 4 7 57850 0.0091 0.3821 0.46266 2017 4 8 57851 0.0097 0.3836 0.46099 2017 4 9 57852 0.0102 0.3851 0.45928 2017 4 10 57853 0.0109 0.3866 0.45757 2017 4 11 57854 0.0115 0.3880 0.45589 2017 4 12 57855 0.0122 0.3895 0.45428 2017 4 13 57856 0.0128 0.3910 0.45275 2017 4 14 57857 0.0136 0.3924 0.45133 2017 4 15 57858 0.0143 0.3938 0.45001 2017 4 16 57859 0.0150 0.3953 0.44878 2017 4 17 57860 0.0158 0.3967 0.44761 2017 4 18 57861 0.0166 0.3981 0.44645 2017 4 19 57862 0.0175 0.3994 0.44527 2017 4 20 57863 0.0183 0.4008 0.44400 2017 4 21 57864 0.0192 0.4022 0.44262 2017 4 22 57865 0.0202 0.4035 0.44108 2017 4 23 57866 0.0211 0.4048 0.43937 2017 4 24 57867 0.0221 0.4061 0.43750 2017 4 25 57868 0.0231 0.4074 0.43553 2017 4 26 57869 0.0241 0.4087 0.43353 2017 4 27 57870 0.0251 0.4100 0.43161 2017 4 28 57871 0.0261 0.4112 0.42983 2017 4 29 57872 0.0272 0.4125 0.42822 2017 4 30 57873 0.0283 0.4137 0.42676 2017 5 1 57874 0.0295 0.4149 0.42540 2017 5 2 57875 0.0306 0.4161 0.42407 2017 5 3 57876 0.0318 0.4172 0.42273 2017 5 4 57877 0.0330 0.4184 0.42134 2017 5 5 57878 0.0342 0.4195 0.41991 2017 5 6 57879 0.0354 0.4206 0.41843 2017 5 7 57880 0.0366 0.4217 0.41695 2017 5 8 57881 0.0379 0.4228 0.41550 2017 5 9 57882 0.0392 0.4238 0.41411 2017 5 10 57883 0.0405 0.4249 0.41281 2017 5 11 57884 0.0418 0.4259 0.41161 2017 5 12 57885 0.0432 0.4269 0.41053 2017 5 13 57886 0.0445 0.4279 0.40956 2017 5 14 57887 0.0459 0.4288 0.40867 2017 5 15 57888 0.0473 0.4297 0.40783 2017 5 16 57889 0.0487 0.4307 0.40701 2017 5 17 57890 0.0501 0.4315 0.40615 2017 5 18 57891 0.0516 0.4324 0.40521 2017 5 19 57892 0.0530 0.4333 0.40415 2017 5 20 57893 0.0545 0.4341 0.40295 2017 5 21 57894 0.0560 0.4349 0.40159 2017 5 22 57895 0.0575 0.4357 0.40010 2017 5 23 57896 0.0590 0.4364 0.39855 2017 5 24 57897 0.0605 0.4372 0.39702 2017 5 25 57898 0.0620 0.4379 0.39559 2017 5 26 57899 0.0636 0.4385 0.39432 2017 5 27 57900 0.0651 0.4392 0.39321 2017 5 28 57901 0.0667 0.4398 0.39223 2017 5 29 57902 0.0683 0.4405 0.39131 2017 5 30 57903 0.0699 0.4411 0.39040 2017 5 31 57904 0.0715 0.4416 0.38945 2017 6 1 57905 0.0731 0.4422 0.38845 2017 6 2 57906 0.0747 0.4427 0.38743 2017 6 3 57907 0.0763 0.4432 0.38642 2017 6 4 57908 0.0780 0.4436 0.38544 2017 6 5 57909 0.0796 0.4441 0.38454 2017 6 6 57910 0.0812 0.4445 0.38373 2017 6 7 57911 0.0829 0.4449 0.38304 2017 6 8 57912 0.0845 0.4453 0.38248 2017 6 9 57913 0.0862 0.4456 0.38202 2017 6 10 57914 0.0879 0.4459 0.38166 2017 6 11 57915 0.0895 0.4462 0.38137 2017 6 12 57916 0.0912 0.4465 0.38109 2017 6 13 57917 0.0929 0.4467 0.38080 2017 6 14 57918 0.0946 0.4469 0.38044 2017 6 15 57919 0.0963 0.4471 0.37998 2017 6 16 57920 0.0979 0.4473 0.37940 2017 6 17 57921 0.0996 0.4474 0.37869 2017 6 18 57922 0.1013 0.4475 0.37786 2017 6 19 57923 0.1030 0.4476 0.37695 2017 6 20 57924 0.1047 0.4477 0.37602 2017 6 21 57925 0.1064 0.4477 0.37513 2017 6 22 57926 0.1080 0.4477 0.37435 2017 6 23 57927 0.1097 0.4477 0.37371 2017 6 24 57928 0.1114 0.4477 0.37320 2017 6 25 57929 0.1131 0.4476 0.37276 2017 6 26 57930 0.1147 0.4475 0.37235 2017 6 27 57931 0.1164 0.4474 0.37190 2017 6 28 57932 0.1181 0.4472 0.37138 2017 6 29 57933 0.1197 0.4471 0.37082 2017 6 30 57934 0.1214 0.4469 0.37024 2017 7 1 57935 0.1230 0.4467 0.36969 2017 7 2 57936 0.1247 0.4464 0.36920 2017 7 3 57937 0.1263 0.4461 0.36879 2017 7 4 57938 0.1279 0.4459 0.36850 2017 7 5 57939 0.1296 0.4455 0.36831 2017 7 6 57940 0.1312 0.4452 0.36824 2017 7 7 57941 0.1328 0.4448 0.36825 2017 7 8 57942 0.1344 0.4444 0.36832 2017 7 9 57943 0.1359 0.4440 0.36841 2017 7 10 57944 0.1375 0.4436 0.36848 2017 7 11 57945 0.1391 0.4431 0.36849 2017 7 12 57946 0.1406 0.4426 0.36839 2017 7 13 57947 0.1422 0.4421 0.36815 2017 7 14 57948 0.1437 0.4416 0.36778 2017 7 15 57949 0.1452 0.4410 0.36728 2017 7 16 57950 0.1467 0.4404 0.36669 2017 7 17 57951 0.1482 0.4398 0.36606 2017 7 18 57952 0.1497 0.4392 0.36545 2017 7 19 57953 0.1512 0.4385 0.36490 2017 7 20 57954 0.1526 0.4379 0.36445 2017 7 21 57955 0.1540 0.4372 0.36411 2017 7 22 57956 0.1555 0.4364 0.36383 2017 7 23 57957 0.1569 0.4357 0.36355 2017 7 24 57958 0.1582 0.4349 0.36322 2017 7 25 57959 0.1596 0.4342 0.36279 2017 7 26 57960 0.1610 0.4334 0.36228 2017 7 27 57961 0.1623 0.4325 0.36172 2017 7 28 57962 0.1636 0.4317 0.36114 2017 7 29 57963 0.1649 0.4308 0.36061 2017 7 30 57964 0.1662 0.4300 0.36015 2017 7 31 57965 0.1675 0.4290 0.35979 2017 8 1 57966 0.1687 0.4281 0.35954 2017 8 2 57967 0.1699 0.4272 0.35938 2017 8 3 57968 0.1711 0.4262 0.35932 2017 8 4 57969 0.1723 0.4252 0.35931 2017 8 5 57970 0.1735 0.4243 0.35931 2017 8 6 57971 0.1746 0.4232 0.35930 2017 8 7 57972 0.1757 0.4222 0.35921 2017 8 8 57973 0.1768 0.4212 0.35901 2017 8 9 57974 0.1779 0.4201 0.35866 2017 8 10 57975 0.1790 0.4190 0.35816 2017 8 11 57976 0.1800 0.4179 0.35752 2017 8 12 57977 0.1810 0.4168 0.35678 2017 8 13 57978 0.1820 0.4157 0.35598 2017 8 14 57979 0.1830 0.4145 0.35519 2017 8 15 57980 0.1839 0.4134 0.35445 2017 8 16 57981 0.1848 0.4122 0.35380 2017 8 17 57982 0.1857 0.4110 0.35324 2017 8 18 57983 0.1866 0.4098 0.35274 2017 8 19 57984 0.1875 0.4086 0.35225 2017 8 20 57985 0.1883 0.4074 0.35169 2017 8 21 57986 0.1891 0.4061 0.35104 2017 8 22 57987 0.1898 0.4049 0.35026 2017 8 23 57988 0.1906 0.4036 0.34937 2017 8 24 57989 0.1913 0.4024 0.34844 2017 8 25 57990 0.1920 0.4011 0.34750 2017 8 26 57991 0.1927 0.3998 0.34661 2017 8 27 57992 0.1933 0.3985 0.34581 2017 8 28 57993 0.1939 0.3972 0.34510 2017 8 29 57994 0.1945 0.3959 0.34450 2017 8 30 57995 0.1951 0.3945 0.34399 2017 8 31 57996 0.1956 0.3932 0.34354 2017 9 1 57997 0.1961 0.3918 0.34311 2017 9 2 57998 0.1966 0.3905 0.34267 2017 9 3 57999 0.1971 0.3891 0.34216 2017 9 4 58000 0.1975 0.3877 0.34155 2017 9 5 58001 0.1979 0.3864 0.34079 2017 9 6 58002 0.1983 0.3850 0.33986 2017 9 7 58003 0.1986 0.3836 0.33878 2017 9 8 58004 0.1990 0.3822 0.33757 2017 9 9 58005 0.1993 0.3808 0.33630 2017 9 10 58006 0.1995 0.3794 0.33504 2017 9 11 58007 0.1998 0.3780 0.33384 2017 9 12 58008 0.2000 0.3766 0.33275 2017 9 13 58009 0.2001 0.3752 0.33178 2017 9 14 58010 0.2003 0.3738 0.33091 2017 9 15 58011 0.2004 0.3724 0.33007 2017 9 16 58012 0.2005 0.3709 0.32921 2017 9 17 58013 0.2006 0.3695 0.32826 2017 9 18 58014 0.2006 0.3681 0.32720 2017 9 19 58015 0.2007 0.3667 0.32603 2017 9 20 58016 0.2006 0.3653 0.32476 2017 9 21 58017 0.2006 0.3639 0.32347 2017 9 22 58018 0.2005 0.3624 0.32218 2017 9 23 58019 0.2004 0.3610 0.32097 2017 9 24 58020 0.2003 0.3596 0.31984 2017 9 25 58021 0.2002 0.3582 0.31880 2017 9 26 58022 0.2000 0.3568 0.31786 2017 9 27 58023 0.1998 0.3554 0.31698 2017 9 28 58024 0.1996 0.3540 0.31613 2017 9 29 58025 0.1993 0.3526 0.31527 2017 9 30 58026 0.1990 0.3512 0.31434 2017 10 1 58027 0.1987 0.3498 0.31331 2017 10 2 58028 0.1984 0.3484 0.31214 2017 10 3 58029 0.1980 0.3470 0.31081 2017 10 4 58030 0.1976 0.3456 0.30930 2017 10 5 58031 0.1972 0.3443 0.30763 2017 10 6 58032 0.1967 0.3429 0.30583 2017 10 7 58033 0.1963 0.3416 0.30397 2017 10 8 58034 0.1958 0.3402 0.30216 2017 10 9 58035 0.1952 0.3389 0.30046 2017 10 10 58036 0.1947 0.3375 0.29890 2017 10 11 58037 0.1941 0.3362 0.29747 2017 10 12 58038 0.1935 0.3349 0.29611 2017 10 13 58039 0.1929 0.3336 0.29474 2017 10 14 58040 0.1922 0.3323 0.29331 2017 10 15 58041 0.1916 0.3310 0.29179 2017 10 16 58042 0.1909 0.3298 0.29016 2017 10 17 58043 0.1902 0.3285 0.28842 2017 10 18 58044 0.1894 0.3273 0.28668 2017 10 19 58045 0.1886 0.3260 0.28490 2017 10 20 58046 0.1878 0.3248 0.28314 2017 10 21 58047 0.1870 0.3236 0.28136 2017 10 22 58048 0.1862 0.3224 0.27970 2017 10 23 58049 0.1853 0.3212 0.27814 2017 10 24 58050 0.1845 0.3200 0.27667 2017 10 25 58051 0.1836 0.3189 0.27532 2017 10 26 58052 0.1826 0.3177 0.27403 2017 10 27 58053 0.1817 0.3166 0.27271 2017 10 28 58054 0.1807 0.3155 0.27134 2017 10 29 58055 0.1797 0.3144 0.26987 2017 10 30 58056 0.1787 0.3133 0.26825 2017 10 31 58057 0.1777 0.3122 0.26652 2017 11 1 58058 0.1766 0.3112 0.26468 2017 11 2 58059 0.1756 0.3101 0.26268 2017 11 3 58060 0.1745 0.3091 0.26066 2017 11 4 58061 0.1734 0.3081 0.25868 2017 11 5 58062 0.1723 0.3071 0.25686 2017 11 6 58063 0.1711 0.3062 0.25524 2017 11 7 58064 0.1700 0.3052 0.25381 2017 11 8 58065 0.1688 0.3043 0.25253 2017 11 9 58066 0.1676 0.3034 0.25128 2017 11 10 58067 0.1664 0.3025 0.24992 2017 11 11 58068 0.1652 0.3016 0.24847 2017 11 12 58069 0.1639 0.3007 0.24693 2017 11 13 58070 0.1627 0.2999 0.24529 2017 11 14 58071 0.1614 0.2991 0.24365 2017 11 15 58072 0.1601 0.2983 0.24198 2017 11 16 58073 0.1588 0.2975 0.24042 2017 11 17 58074 0.1575 0.2968 0.23893 2017 11 18 58075 0.1562 0.2960 0.23754 2017 11 19 58076 0.1548 0.2953 0.23617 2017 11 20 58077 0.1535 0.2946 0.23487 2017 11 21 58078 0.1521 0.2939 0.23369 2017 11 22 58079 0.1508 0.2933 0.23254 2017 11 23 58080 0.1494 0.2926 0.23134 2017 11 24 58081 0.1480 0.2920 0.23010 2017 11 25 58082 0.1466 0.2914 0.22884 2017 11 26 58083 0.1452 0.2909 0.22743 2017 11 27 58084 0.1437 0.2903 0.22582 2017 11 28 58085 0.1423 0.2898 0.22403 2017 11 29 58086 0.1409 0.2893 0.22207 2017 11 30 58087 0.1394 0.2888 0.21993 2017 12 1 58088 0.1380 0.2884 0.21782 2017 12 2 58089 0.1365 0.2880 0.21578 2017 12 3 58090 0.1350 0.2875 0.21389 2017 12 4 58091 0.1336 0.2872 0.21215 2017 12 5 58092 0.1321 0.2868 0.21059 2017 12 6 58093 0.1306 0.2865 0.20914 2017 12 7 58094 0.1291 0.2861 0.20772 2017 12 8 58095 0.1276 0.2859 0.20629 2017 12 9 58096 0.1261 0.2856 0.20483 2017 12 10 58097 0.1246 0.2853 0.20328 2017 12 11 58098 0.1231 0.2851 0.20175 2017 12 12 58099 0.1216 0.2849 0.20029 2017 12 13 58100 0.1201 0.2847 0.19882 2017 12 14 58101 0.1186 0.2846 0.19746 2017 12 15 58102 0.1171 0.2845 0.19618 2017 12 16 58103 0.1156 0.2844 0.19507 2017 12 17 58104 0.1141 0.2843 0.19400 2017 12 18 58105 0.1126 0.2842 0.19295 2017 12 19 58106 0.1110 0.2842 0.19200 2017 12 20 58107 0.1095 0.2842 0.19106 2017 12 21 58108 0.1080 0.2842 0.19007 2017 12 22 58109 0.1065 0.2842 0.18902 2017 12 23 58110 0.1050 0.2843 0.18784 2017 12 24 58111 0.1035 0.2844 0.18645 2017 12 25 58112 0.1020 0.2845 0.18492 2017 12 26 58113 0.1006 0.2846 0.18320 2017 12 27 58114 0.0991 0.2847 0.18133 2017 12 28 58115 0.0976 0.2849 0.17940 2017 12 29 58116 0.0961 0.2851 0.17745 2017 12 30 58117 0.0947 0.2853 0.17551 2017 12 31 58118 0.0932 0.2856 0.17368 2018 1 1 58119 0.0917 0.2858 0.17200 2018 1 2 58120 0.0903 0.2861 0.17037 2018 1 3 58121 0.0889 0.2864 0.16868 2018 1 4 58122 0.0874 0.2868 0.16694 2018 1 5 58123 0.0860 0.2871 0.16509 2018 1 6 58124 0.0846 0.2875 0.16315 2018 1 7 58125 0.0832 0.2879 0.16107 2018 1 8 58126 0.0818 0.2883 0.15891 2018 1 9 58127 0.0804 0.2888 0.15681 2018 1 10 58128 0.0790 0.2892 0.15483 2018 1 11 58129 0.0777 0.2897 0.15307 2018 1 12 58130 0.0763 0.2902 0.15147 2018 1 13 58131 0.0750 0.2908 0.15003 2018 1 14 58132 0.0737 0.2913 0.14869 2018 1 15 58133 0.0724 0.2919 0.14737 2018 1 16 58134 0.0711 0.2925 0.14611 2018 1 17 58135 0.0698 0.2931 0.14491 2018 1 18 58136 0.0685 0.2937 0.14371 2018 1 19 58137 0.0673 0.2944 0.14249 2018 1 20 58138 0.0660 0.2950 0.14123 2018 1 21 58139 0.0648 0.2957 0.13988 2018 1 22 58140 0.0636 0.2964 0.13843 2018 1 23 58141 0.0624 0.2972 0.13679 2018 1 24 58142 0.0612 0.2979 0.13514 2018 1 25 58143 0.0601 0.2987 0.13340 2018 1 26 58144 0.0589 0.2995 0.13172 2018 1 27 58145 0.0578 0.3003 0.13014 2018 1 28 58146 0.0567 0.3011 0.12864 2018 1 29 58147 0.0556 0.3019 0.12725 2018 1 30 58148 0.0545 0.3028 0.12592 2018 1 31 58149 0.0535 0.3036 0.12462 2018 2 1 58150 0.0524 0.3045 0.12313 2018 2 2 58151 0.0514 0.3054 0.12153 2018 2 3 58152 0.0504 0.3063 0.11981 2018 2 4 58153 0.0495 0.3073 0.11809 2018 2 5 58154 0.0485 0.3082 0.11645 2018 2 6 58155 0.0476 0.3092 0.11488 2018 2 7 58156 0.0467 0.3101 0.11340 2018 2 8 58157 0.0458 0.3111 0.11196 2018 2 9 58158 0.0449 0.3121 0.11068 2018 2 10 58159 0.0440 0.3132 0.10954 2018 2 11 58160 0.0432 0.3142 0.10849 2018 2 12 58161 0.0424 0.3152 0.10746 2018 2 13 58162 0.0416 0.3163 0.10640 2018 2 14 58163 0.0409 0.3174 0.10541 2018 2 15 58164 0.0401 0.3184 0.10430 2018 2 16 58165 0.0394 0.3195 0.10305 2018 2 17 58166 0.0387 0.3206 0.10167 2018 2 18 58167 0.0380 0.3217 0.10009 2018 2 19 58168 0.0374 0.3229 0.09836 2018 2 20 58169 0.0368 0.3240 0.09654 2018 2 21 58170 0.0362 0.3251 0.09473 2018 2 22 58171 0.0356 0.3263 0.09293 2018 2 23 58172 0.0351 0.3275 0.09119 2018 2 24 58173 0.0345 0.3286 0.08966 2018 2 25 58174 0.0340 0.3298 0.08813 2018 2 26 58175 0.0336 0.3310 0.08674 2018 2 27 58176 0.0331 0.3322 0.08525 2018 2 28 58177 0.0327 0.3334 0.08361 2018 3 1 58178 0.0323 0.3346 0.08173 2018 3 2 58179 0.0319 0.3358 0.07967 2018 3 3 58180 0.0316 0.3370 0.07747 2018 3 4 58181 0.0312 0.3382 0.07521 2018 3 5 58182 0.0309 0.3395 0.07297 2018 3 6 58183 0.0307 0.3407 0.07084 2018 3 7 58184 0.0304 0.3419 0.06878 2018 3 8 58185 0.0302 0.3432 0.06686 2018 3 9 58186 0.0300 0.3444 0.06510 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) 57795 -100.00 0.30 -9.77 0.04 57796 -99.70 0.30 -9.96 0.04 57797 -99.50 0.30 -10.23 0.04 57798 -99.46 0.30 -10.40 0.04 57799 -99.64 0.30 -10.38 0.02 57800 -100.03 0.30 -10.28 0.02 57801 -100.49 0.30 -10.23 0.02 57802 -100.83 0.30 -10.27 0.01 57803 -100.87 0.30 -10.33 0.01 57804 -100.60 0.30 -10.34 0.01 57805 -100.17 0.30 -10.31 0.15 57806 -99.78 0.30 -10.31 0.01 57807 -99.55 0.30 -10.42 0.01 57808 -99.44 0.30 -10.63 0.01 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57795 -0.135 0.119 -0.166 0.040 57796 -0.120 0.119 -0.161 0.040 57797 -0.108 0.119 -0.149 0.040 57798 -0.103 0.119 -0.140 0.040 57799 -0.107 0.119 -0.119 0.020 57800 -0.120 0.119 -0.107 0.020 57801 -0.133 0.119 -0.104 0.020 57802 -0.141 0.119 -0.110 0.010 57803 -0.130 0.119 -0.122 0.010 57804 -0.103 0.119 -0.139 0.010 57805 -0.071 0.119 -0.157 0.150 57806 -0.044 0.119 -0.148 0.010 57807 -0.032 0.119 -0.120 0.010 57808 -0.029 0.119 -0.106 0.010 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).