********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 5 January 2017 Vol. XXX No. 001 ______________________________________________________________________ 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 = +0.6 seconds beginning 01 Jan 2017 at 0000 UTC Beginning 1 Jan 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. * * * * A positive leap second WAS introduced in UTC on 31 December 2016. * * * * 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 16 12 30 57752 0.08296 .00009 0.26356 .00010 -0.407075 0.000020 16 12 31 57753 0.08151 .00009 0.26320 .00010 -0.407858 0.000021 17 1 1 57754 0.08065 .00009 0.26323 .00010 0.591162 0.000018 17 1 2 57755 0.08041 .00009 0.26355 .00009 0.590057 0.000018 17 1 3 57756 0.08038 .00009 0.26395 .00009 0.588855 0.000017 17 1 4 57757 0.08002 .00009 0.26428 .00009 0.587501 0.000017 17 1 5 57758 0.07903 .00010 0.26469 .00009 0.585980 0.000016 IERS Final Values MJD x y UT1-UTC " " s 16 11 2 57694 0.1873 0.2816 -0.32514 16 11 3 57695 0.1859 0.2804 -0.32640 16 11 4 57696 0.1851 0.2794 -0.32762 16 11 5 57697 0.1839 0.2790 -0.32889 16 11 6 57698 0.1821 0.2789 -0.33025 16 11 7 57699 0.1795 0.2788 -0.33171 16 11 8 57700 0.1764 0.2783 -0.33328 16 11 9 57701 0.1736 0.2777 -0.33501 16 11 10 57702 0.1713 0.2770 -0.33691 16 11 11 57703 0.1694 0.2764 -0.33896 16 11 12 57704 0.1674 0.2754 -0.34112 16 11 13 57705 0.1656 0.2743 -0.34326 16 11 14 57706 0.1636 0.2733 -0.34528 16 11 15 57707 0.1613 0.2722 -0.34710 16 11 16 57708 0.1590 0.2714 -0.34872 16 11 17 57709 0.1566 0.2708 -0.35008 16 11 18 57710 0.1551 0.2704 -0.35137 16 11 19 57711 0.1533 0.2703 -0.35262 16 11 20 57712 0.1511 0.2700 -0.35396 16 11 21 57713 0.1483 0.2695 -0.35533 16 11 22 57714 0.1460 0.2690 -0.35680 16 11 23 57715 0.1440 0.2687 -0.35834 16 11 24 57716 0.1425 0.2684 -0.35992 16 11 25 57717 0.1413 0.2684 -0.36164 16 11 26 57718 0.1403 0.2683 -0.36310 16 11 27 57719 0.1391 0.2685 -0.36451 16 11 28 57720 0.1371 0.2688 -0.36591 16 11 29 57721 0.1344 0.2684 -0.36721 16 11 30 57722 0.1320 0.2679 -0.36848 16 12 1 57723 0.1299 0.2674 -0.36972 _______________________________________________________________________ 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 = 0.1227 - 0.0625 cos A - 0.0873 sin A + 0.0193 cos C - 0.0209 sin C y = 0.3661 - 0.0813 cos A + 0.0596 sin A - 0.0209 cos C - 0.0193 sin C UT1-UTC = 0.5791 - 0.00129 (MJD - 57766) - (UT2-UT1) where A = 2*pi*(MJD-57758)/365.25 and C = 2*pi*(MJD-57758)/435. TAI-UTC(MJD 57759) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57758)**0.80 S t = 0.00025 (MJD-57758)**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 1 6 57759 0.0777 0.2651 0.58439 2017 1 7 57760 0.0761 0.2656 0.58280 2017 1 8 57761 0.0743 0.2660 0.58129 2017 1 9 57762 0.0727 0.2665 0.57989 2017 1 10 57763 0.0711 0.2669 0.57863 2017 1 11 57764 0.0695 0.2674 0.57752 2017 1 12 57765 0.0679 0.2680 0.57651 2017 1 13 57766 0.0663 0.2687 0.57550 2017 1 14 57767 0.0647 0.2694 0.57444 2017 1 15 57768 0.0630 0.2700 0.57325 2017 1 16 57769 0.0614 0.2707 0.57196 2017 1 17 57770 0.0598 0.2714 0.57061 2017 1 18 57771 0.0582 0.2721 0.56926 2017 1 19 57772 0.0566 0.2728 0.56795 2017 1 20 57773 0.0551 0.2736 0.56671 2017 1 21 57774 0.0536 0.2743 0.56555 2017 1 22 57775 0.0522 0.2750 0.56448 2017 1 23 57776 0.0508 0.2758 0.56351 2017 1 24 57777 0.0495 0.2765 0.56260 2017 1 25 57778 0.0483 0.2773 0.56174 2017 1 26 57779 0.0471 0.2782 0.56088 2017 1 27 57780 0.0459 0.2791 0.55997 2017 1 28 57781 0.0447 0.2800 0.55897 2017 1 29 57782 0.0434 0.2810 0.55785 2017 1 30 57783 0.0421 0.2820 0.55656 2017 1 31 57784 0.0408 0.2831 0.55511 2017 2 1 57785 0.0396 0.2841 0.55354 2017 2 2 57786 0.0383 0.2852 0.55189 2017 2 3 57787 0.0371 0.2862 0.55021 2017 2 4 57788 0.0359 0.2873 0.54858 2017 2 5 57789 0.0348 0.2885 0.54702 2017 2 6 57790 0.0336 0.2896 0.54557 2017 2 7 57791 0.0325 0.2908 0.54420 2017 2 8 57792 0.0313 0.2920 0.54289 2017 2 9 57793 0.0302 0.2932 0.54158 2017 2 10 57794 0.0292 0.2944 0.54021 2017 2 11 57795 0.0281 0.2956 0.53878 2017 2 12 57796 0.0271 0.2968 0.53726 2017 2 13 57797 0.0261 0.2981 0.53567 2017 2 14 57798 0.0251 0.2993 0.53406 2017 2 15 57799 0.0242 0.3006 0.53246 2017 2 16 57800 0.0233 0.3019 0.53090 2017 2 17 57801 0.0224 0.3032 0.52941 2017 2 18 57802 0.0216 0.3045 0.52801 2017 2 19 57803 0.0207 0.3058 0.52670 2017 2 20 57804 0.0199 0.3072 0.52546 2017 2 21 57805 0.0192 0.3086 0.52428 2017 2 22 57806 0.0184 0.3100 0.52311 2017 2 23 57807 0.0177 0.3114 0.52192 2017 2 24 57808 0.0170 0.3128 0.52064 2017 2 25 57809 0.0163 0.3142 0.51923 2017 2 26 57810 0.0156 0.3156 0.51767 2017 2 27 57811 0.0150 0.3171 0.51592 2017 2 28 57812 0.0144 0.3185 0.51403 2017 3 1 57813 0.0138 0.3200 0.51204 2017 3 2 57814 0.0133 0.3215 0.51004 2017 3 3 57815 0.0128 0.3230 0.50809 2017 3 4 57816 0.0123 0.3245 0.50625 2017 3 5 57817 0.0118 0.3260 0.50455 2017 3 6 57818 0.0114 0.3275 0.50296 2017 3 7 57819 0.0110 0.3290 0.50144 2017 3 8 57820 0.0106 0.3305 0.49994 2017 3 9 57821 0.0103 0.3320 0.49840 2017 3 10 57822 0.0100 0.3335 0.49679 2017 3 11 57823 0.0097 0.3351 0.49508 2017 3 12 57824 0.0094 0.3366 0.49330 2017 3 13 57825 0.0092 0.3382 0.49147 2017 3 14 57826 0.0090 0.3397 0.48965 2017 3 15 57827 0.0089 0.3413 0.48787 2017 3 16 57828 0.0087 0.3428 0.48616 2017 3 17 57829 0.0086 0.3444 0.48454 2017 3 18 57830 0.0085 0.3460 0.48301 2017 3 19 57831 0.0085 0.3475 0.48157 2017 3 20 57832 0.0085 0.3491 0.48019 2017 3 21 57833 0.0085 0.3507 0.47885 2017 3 22 57834 0.0085 0.3522 0.47750 2017 3 23 57835 0.0086 0.3538 0.47610 2017 3 24 57836 0.0087 0.3554 0.47459 2017 3 25 57837 0.0088 0.3569 0.47292 2017 3 26 57838 0.0089 0.3585 0.47108 2017 3 27 57839 0.0091 0.3601 0.46907 2017 3 28 57840 0.0093 0.3616 0.46691 2017 3 29 57841 0.0096 0.3632 0.46470 2017 3 30 57842 0.0098 0.3647 0.46252 2017 3 31 57843 0.0101 0.3663 0.46044 2017 4 1 57844 0.0105 0.3678 0.45850 2017 4 2 57845 0.0108 0.3694 0.45671 2017 4 3 57846 0.0112 0.3709 0.45502 2017 4 4 57847 0.0116 0.3725 0.45339 2017 4 5 57848 0.0121 0.3740 0.45176 2017 4 6 57849 0.0125 0.3755 0.45007 2017 4 7 57850 0.0130 0.3770 0.44832 2017 4 8 57851 0.0135 0.3785 0.44649 2017 4 9 57852 0.0141 0.3800 0.44462 2017 4 10 57853 0.0147 0.3815 0.44275 2017 4 11 57854 0.0153 0.3830 0.44091 2017 4 12 57855 0.0159 0.3845 0.43913 2017 4 13 57856 0.0166 0.3860 0.43746 2017 4 14 57857 0.0173 0.3874 0.43589 2017 4 15 57858 0.0180 0.3889 0.43442 2017 4 16 57859 0.0187 0.3903 0.43305 2017 4 17 57860 0.0195 0.3917 0.43174 2017 4 18 57861 0.0203 0.3931 0.43046 2017 4 19 57862 0.0211 0.3946 0.42914 2017 4 20 57863 0.0219 0.3959 0.42775 2017 4 21 57864 0.0228 0.3973 0.42625 2017 4 22 57865 0.0237 0.3987 0.42458 2017 4 23 57866 0.0246 0.4000 0.42275 2017 4 24 57867 0.0255 0.4014 0.42078 2017 4 25 57868 0.0265 0.4027 0.41871 2017 4 26 57869 0.0275 0.4040 0.41662 2017 4 27 57870 0.0285 0.4053 0.41460 2017 4 28 57871 0.0295 0.4066 0.41272 2017 4 29 57872 0.0306 0.4079 0.41102 2017 4 30 57873 0.0316 0.4091 0.40946 2017 5 1 57874 0.0327 0.4104 0.40801 2017 5 2 57875 0.0339 0.4116 0.40659 2017 5 3 57876 0.0350 0.4128 0.40515 2017 5 4 57877 0.0362 0.4140 0.40367 2017 5 5 57878 0.0373 0.4151 0.40215 2017 5 6 57879 0.0385 0.4163 0.40059 2017 5 7 57880 0.0398 0.4174 0.39903 2017 5 8 57881 0.0410 0.4186 0.39751 2017 5 9 57882 0.0423 0.4197 0.39605 2017 5 10 57883 0.0435 0.4207 0.39469 2017 5 11 57884 0.0448 0.4218 0.39344 2017 5 12 57885 0.0462 0.4228 0.39230 2017 5 13 57886 0.0475 0.4239 0.39127 2017 5 14 57887 0.0488 0.4249 0.39033 2017 5 15 57888 0.0502 0.4258 0.38944 2017 5 16 57889 0.0516 0.4268 0.38855 2017 5 17 57890 0.0530 0.4277 0.38762 2017 5 18 57891 0.0544 0.4287 0.38661 2017 5 19 57892 0.0558 0.4296 0.38548 2017 5 20 57893 0.0573 0.4304 0.38421 2017 5 21 57894 0.0587 0.4313 0.38278 2017 5 22 57895 0.0602 0.4321 0.38123 2017 5 23 57896 0.0617 0.4329 0.37962 2017 5 24 57897 0.0632 0.4337 0.37802 2017 5 25 57898 0.0647 0.4345 0.37652 2017 5 26 57899 0.0662 0.4352 0.37517 2017 5 27 57900 0.0677 0.4360 0.37399 2017 5 28 57901 0.0693 0.4367 0.37292 2017 5 29 57902 0.0708 0.4373 0.37191 2017 5 30 57903 0.0724 0.4380 0.37090 2017 5 31 57904 0.0740 0.4386 0.36985 2017 6 1 57905 0.0755 0.4392 0.36877 2017 6 2 57906 0.0771 0.4398 0.36765 2017 6 3 57907 0.0787 0.4404 0.36654 2017 6 4 57908 0.0803 0.4409 0.36546 2017 6 5 57909 0.0819 0.4414 0.36445 2017 6 6 57910 0.0836 0.4419 0.36354 2017 6 7 57911 0.0852 0.4423 0.36274 2017 6 8 57912 0.0868 0.4428 0.36206 2017 6 9 57913 0.0885 0.4432 0.36149 2017 6 10 57914 0.0901 0.4436 0.36102 2017 6 11 57915 0.0917 0.4439 0.36061 2017 6 12 57916 0.0934 0.4443 0.36022 2017 6 13 57917 0.0951 0.4446 0.35982 2017 6 14 57918 0.0967 0.4449 0.35934 2017 6 15 57919 0.0984 0.4451 0.35877 2017 6 16 57920 0.1000 0.4454 0.35807 2017 6 17 57921 0.1017 0.4456 0.35723 2017 6 18 57922 0.1034 0.4458 0.35628 2017 6 19 57923 0.1050 0.4459 0.35524 2017 6 20 57924 0.1067 0.4461 0.35418 2017 6 21 57925 0.1084 0.4462 0.35317 2017 6 22 57926 0.1100 0.4463 0.35227 2017 6 23 57927 0.1117 0.4463 0.35151 2017 6 24 57928 0.1133 0.4464 0.35088 2017 6 25 57929 0.1150 0.4464 0.35032 2017 6 26 57930 0.1167 0.4464 0.34978 2017 6 27 57931 0.1183 0.4463 0.34919 2017 6 28 57932 0.1200 0.4462 0.34855 2017 6 29 57933 0.1216 0.4462 0.34786 2017 6 30 57934 0.1232 0.4460 0.34717 2017 7 1 57935 0.1249 0.4459 0.34652 2017 7 2 57936 0.1265 0.4457 0.34594 2017 7 3 57937 0.1281 0.4455 0.34546 2017 7 4 57938 0.1297 0.4453 0.34510 2017 7 5 57939 0.1314 0.4451 0.34488 2017 7 6 57940 0.1330 0.4448 0.34478 2017 7 7 57941 0.1345 0.4445 0.34480 2017 7 8 57942 0.1361 0.4442 0.34490 2017 7 9 57943 0.1377 0.4439 0.34505 2017 7 10 57944 0.1393 0.4435 0.34522 2017 7 11 57945 0.1408 0.4432 0.34535 2017 7 12 57946 0.1424 0.4428 0.34540 2017 7 13 57947 0.1439 0.4423 0.34534 2017 7 14 57948 0.1454 0.4419 0.34515 2017 7 15 57949 0.1470 0.4414 0.34484 2017 7 16 57950 0.1485 0.4409 0.34441 2017 7 17 57951 0.1499 0.4404 0.34391 2017 7 18 57952 0.1514 0.4398 0.34339 2017 7 19 57953 0.1529 0.4393 0.34290 2017 7 20 57954 0.1543 0.4387 0.34250 2017 7 21 57955 0.1558 0.4381 0.34217 2017 7 22 57956 0.1572 0.4374 0.34190 2017 7 23 57957 0.1586 0.4368 0.34161 2017 7 24 57958 0.1600 0.4361 0.34124 2017 7 25 57959 0.1614 0.4354 0.34074 2017 7 26 57960 0.1627 0.4347 0.34013 2017 7 27 57961 0.1641 0.4339 0.33941 2017 7 28 57962 0.1654 0.4332 0.33865 2017 7 29 57963 0.1667 0.4324 0.33790 2017 7 30 57964 0.1680 0.4316 0.33720 2017 7 31 57965 0.1693 0.4308 0.33659 2017 8 1 57966 0.1705 0.4299 0.33610 2017 8 2 57967 0.1718 0.4291 0.33573 2017 8 3 57968 0.1730 0.4282 0.33548 2017 8 4 57969 0.1742 0.4273 0.33533 2017 8 5 57970 0.1754 0.4264 0.33525 2017 8 6 57971 0.1766 0.4255 0.33517 2017 8 7 57972 0.1777 0.4245 0.33505 2017 8 8 57973 0.1788 0.4235 0.33484 2017 8 9 57974 0.1799 0.4226 0.33450 2017 8 10 57975 0.1810 0.4216 0.33399 2017 8 11 57976 0.1821 0.4205 0.33334 2017 8 12 57977 0.1831 0.4195 0.33257 2017 8 13 57978 0.1841 0.4185 0.33172 2017 8 14 57979 0.1851 0.4174 0.33082 2017 8 15 57980 0.1861 0.4163 0.32996 2017 8 16 57981 0.1870 0.4152 0.32918 2017 8 17 57982 0.1879 0.4141 0.32846 2017 8 18 57983 0.1889 0.4130 0.32778 2017 8 19 57984 0.1897 0.4118 0.32709 2017 8 20 57985 0.1906 0.4107 0.32625 2017 8 21 57986 0.1914 0.4095 0.32531 2017 8 22 57987 0.1922 0.4084 0.32416 2017 8 23 57988 0.1930 0.4072 0.32289 2017 8 24 57989 0.1938 0.4060 0.32156 2017 8 25 57990 0.1945 0.4047 0.32022 2017 8 26 57991 0.1952 0.4035 0.31888 2017 8 27 57992 0.1959 0.4023 0.31763 2017 8 28 57993 0.1966 0.4010 0.31652 2017 8 29 57994 0.1972 0.3998 0.31547 2017 8 30 57995 0.1978 0.3985 0.31445 2017 8 31 57996 0.1984 0.3973 0.31350 2017 9 1 57997 0.1990 0.3960 0.31256 2017 9 2 57998 0.1995 0.3947 0.31160 2017 9 3 57999 0.2000 0.3934 0.31050 2017 9 4 58000 0.2005 0.3921 0.30920 2017 9 5 58001 0.2009 0.3908 0.30776 2017 9 6 58002 0.2014 0.3894 0.30618 2017 9 7 58003 0.2018 0.3881 0.30455 2017 9 8 58004 0.2021 0.3868 0.30282 2017 9 9 58005 0.2025 0.3854 0.30105 2017 9 10 58006 0.2028 0.3841 0.29928 2017 9 11 58007 0.2031 0.3827 0.29751 2017 9 12 58008 0.2034 0.3814 0.29588 2017 9 13 58009 0.2036 0.3800 0.29441 2017 9 14 58010 0.2038 0.3787 0.29308 2017 9 15 58011 0.2040 0.3773 0.29184 2017 9 16 58012 0.2042 0.3759 0.29065 2017 9 17 58013 0.2043 0.3746 0.28941 2017 9 18 58014 0.2044 0.3732 0.28809 2017 9 19 58015 0.2045 0.3718 0.28655 2017 9 20 58016 0.2046 0.3705 0.28499 2017 9 21 58017 0.2046 0.3691 0.28333 2017 9 22 58018 0.2046 0.3677 0.28172 2017 9 23 58019 0.2046 0.3663 0.28020 2017 9 24 58020 0.2045 0.3650 0.27877 2017 9 25 58021 0.2045 0.3636 0.27749 2017 9 26 58022 0.2044 0.3622 0.27635 2017 9 27 58023 0.2042 0.3608 0.27538 2017 9 28 58024 0.2041 0.3595 0.27438 2017 9 29 58025 0.2039 0.3581 0.27340 2017 9 30 58026 0.2037 0.3567 0.27235 2017 10 1 58027 0.2035 0.3554 0.27127 2017 10 2 58028 0.2032 0.3540 0.27011 2017 10 3 58029 0.2029 0.3527 0.26879 2017 10 4 58030 0.2026 0.3513 0.26726 2017 10 5 58031 0.2023 0.3500 0.26549 2017 10 6 58032 0.2019 0.3486 0.26363 2017 10 7 58033 0.2015 0.3473 0.26179 2017 10 8 58034 0.2011 0.3460 0.25999 2017 10 9 58035 0.2007 0.3447 0.25829 2017 10 10 58036 0.2002 0.3433 0.25668 2017 10 11 58037 0.1997 0.3420 0.25531 2017 10 12 58038 0.1992 0.3407 0.25399 2017 10 13 58039 0.1987 0.3395 0.25264 2017 10 14 58040 0.1982 0.3382 0.25126 2017 10 15 58041 0.1976 0.3369 0.24971 2017 10 16 58042 0.1970 0.3356 0.24803 2017 10 17 58043 0.1963 0.3344 0.24624 2017 10 18 58044 0.1957 0.3331 0.24442 2017 10 19 58045 0.1950 0.3319 0.24260 2017 10 20 58046 0.1943 0.3307 0.24081 2017 10 21 58047 0.1936 0.3295 0.23925 2017 10 22 58048 0.1929 0.3283 0.23771 2017 10 23 58049 0.1921 0.3271 0.23641 2017 10 24 58050 0.1913 0.3259 0.23514 2017 10 25 58051 0.1905 0.3247 0.23390 2017 10 26 58052 0.1897 0.3236 0.23259 2017 10 27 58053 0.1888 0.3224 0.23124 2017 10 28 58054 0.1880 0.3213 0.22978 2017 10 29 58055 0.1871 0.3202 0.22820 2017 10 30 58056 0.1862 0.3191 0.22645 2017 10 31 58057 0.1853 0.3180 0.22455 2017 11 1 58058 0.1843 0.3169 0.22242 2017 11 2 58059 0.1834 0.3159 0.22015 2017 11 3 58060 0.1824 0.3148 0.21785 2017 11 4 58061 0.1814 0.3138 0.21566 2017 11 5 58062 0.1804 0.3128 0.21353 2017 11 6 58063 0.1793 0.3118 0.21145 2017 11 7 58064 0.1783 0.3108 0.20958 2017 11 8 58065 0.1772 0.3099 0.20769 2017 11 9 58066 0.1761 0.3089 0.20595 2017 11 10 58067 0.1750 0.3080 0.20422 2017 11 11 58068 0.1739 0.3071 0.20241 2017 11 12 58069 0.1728 0.3062 0.20053 2017 11 13 58070 0.1716 0.3053 0.19857 2017 11 14 58071 0.1705 0.3045 0.19653 2017 11 15 58072 0.1693 0.3036 0.19452 2017 11 16 58073 0.1681 0.3028 0.19262 2017 11 17 58074 0.1669 0.3020 0.19083 2017 11 18 58075 0.1657 0.3012 0.18909 2017 11 19 58076 0.1644 0.3005 0.18762 2017 11 20 58077 0.1632 0.2997 0.18618 2017 11 21 58078 0.1619 0.2990 0.18474 2017 11 22 58079 0.1607 0.2983 0.18330 2017 11 23 58080 0.1594 0.2976 0.18190 2017 11 24 58081 0.1581 0.2969 0.18050 2017 11 25 58082 0.1568 0.2963 0.17899 2017 11 26 58083 0.1555 0.2957 0.17739 2017 11 27 58084 0.1542 0.2951 0.17577 2017 11 28 58085 0.1529 0.2945 0.17407 2017 11 29 58086 0.1515 0.2939 0.17212 2017 11 30 58087 0.1502 0.2934 0.17009 2017 12 1 58088 0.1488 0.2928 0.16805 2017 12 2 58089 0.1475 0.2923 0.16604 2017 12 3 58090 0.1461 0.2919 0.16419 2017 12 4 58091 0.1448 0.2914 0.16249 2017 12 5 58092 0.1434 0.2910 0.16095 2017 12 6 58093 0.1420 0.2906 0.15946 2017 12 7 58094 0.1406 0.2902 0.15816 2017 12 8 58095 0.1392 0.2898 0.15676 2017 12 9 58096 0.1378 0.2894 0.15531 2017 12 10 58097 0.1364 0.2891 0.15377 2017 12 11 58098 0.1350 0.2888 0.15220 2017 12 12 58099 0.1336 0.2885 0.15062 2017 12 13 58100 0.1322 0.2883 0.14904 2017 12 14 58101 0.1308 0.2880 0.14760 2017 12 15 58102 0.1294 0.2878 0.14615 2017 12 16 58103 0.1280 0.2876 0.14488 2017 12 17 58104 0.1266 0.2874 0.14362 2017 12 18 58105 0.1252 0.2873 0.14243 2017 12 19 58106 0.1238 0.2872 0.14134 2017 12 20 58107 0.1223 0.2871 0.14035 2017 12 21 58108 0.1209 0.2870 0.13921 2017 12 22 58109 0.1195 0.2869 0.13822 2017 12 23 58110 0.1181 0.2869 0.13715 2017 12 24 58111 0.1167 0.2868 0.13597 2017 12 25 58112 0.1153 0.2869 0.13468 2017 12 26 58113 0.1139 0.2869 0.13321 2017 12 27 58114 0.1125 0.2869 0.13167 2017 12 28 58115 0.1111 0.2870 0.13009 2017 12 29 58116 0.1098 0.2871 0.12835 2017 12 30 58117 0.1084 0.2872 0.12667 2017 12 31 58118 0.1070 0.2873 0.12502 2018 1 1 58119 0.1056 0.2875 0.12343 2018 1 2 58120 0.1043 0.2877 0.12183 2018 1 3 58121 0.1029 0.2879 0.12020 2018 1 4 58122 0.1016 0.2881 0.11848 2018 1 5 58123 0.1002 0.2883 0.11670 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) 57736 -100.84 0.12 -9.61 0.08 57737 -100.82 0.12 -9.41 0.08 57738 -100.54 0.12 -9.23 0.08 57739 -100.03 0.30 -9.28 0.15 57740 -99.55 0.30 -9.47 0.15 57741 -99.39 0.15 -9.55 0.03 57742 -99.49 0.15 -9.41 0.03 57743 -99.59 0.15 -9.18 0.03 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 57694 -102.0 -11.3 57695 -101.6 -11.5 57696 -101.5 -11.5 57697 -101.6 -11.7 57698 -101.7 -11.7 57699 -101.6 -11.7 57700 -102.0 -11.3 57701 -101.9 -11.0 57702 -101.8 -10.9 57703 -101.8 -10.7 57704 -101.6 -10.5 57705 -101.3 -10.4 57706 -101.0 -10.4 57707 -101.0 -10.5 57708 -101.2 -10.5 57709 -101.4 -10.4 57710 -101.3 -10.4 57711 -101.0 -10.6 57712 -100.7 -10.8 57713 -100.6 -10.8 57714 -100.6 -10.7 57715 -100.9 -10.5 57716 -101.0 -10.4 57717 -101.2 -10.3 57718 -101.1 -10.1 57719 -100.9 -9.9 57720 -100.7 -9.8 57721 -100.3 -9.8 57722 -100.2 -9.9 57723 -100.0 -10.0 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57736 -0.044 0.048 -0.224 0.080 57737 -0.041 0.048 -0.218 0.080 57738 -0.033 0.048 -0.227 0.080 57739 -0.015 0.119 -0.230 0.150 57740 0.008 0.119 -0.220 0.150 57741 0.016 0.060 -0.203 0.030 57742 0.016 0.060 -0.174 0.030 57743 0.011 0.060 -0.142 0.030 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 57694 0.20 -0.18 57695 0.23 -0.35 57696 0.22 -0.33 57697 0.24 -0.50 57698 0.28 -0.50 57699 0.30 -0.63 57700 0.04 -0.43 57701 0.00 -0.31 57702 0.01 -0.33 57703 0.00 -0.29 57704 0.01 -0.30 57705 0.05 -0.33 57706 0.13 -0.24 57707 0.16 -0.18 57708 0.16 -0.19 57709 0.15 -0.25 57710 0.18 -0.27 57711 0.18 -0.27 57712 0.18 -0.23 57713 0.18 -0.19 57714 0.21 -0.25 57715 0.07 -0.25 57716 -0.05 -0.28 57717 -0.20 -0.30 57718 -0.16 -0.26 57719 -0.06 -0.21 57720 0.03 -0.17 57721 0.15 -0.13 57722 0.13 -0.17 57723 0.14 -0.23 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).