********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 20 February 2014 Vol. XXVII No. 008 ______________________________________________________________________ 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 = -0.2 seconds beginning 20 Feb 2014 at 0000 UTC Beginning 1 July 2012: TAI-UTC = 35.000 000 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 * * * *********************************************************************** ________________________________________________________________________ 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 14 2 14 56702 0.02210 .00009 0.36709 .00009 -0.141392 0.000006 14 2 15 56703 0.02152 .00009 0.36869 .00010 -0.142445 0.000006 14 2 16 56704 0.02103 .00009 0.37039 .00010 -0.143639 0.000007 14 2 17 56705 0.02045 .00009 0.37206 .00010 -0.144951 0.000007 14 2 18 56706 0.01992 .00009 0.37345 .00010 -0.146328 0.000007 14 2 19 56707 0.01988 .00009 0.37479 .00010 -0.147710 0.000007 14 2 20 56708 0.02011 .00009 0.37615 .00009 -0.149072 0.000007 _______________________________________________________________________ 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 = 0.0872 - 0.1071 cos A + 0.0085 sin A + 0.0341 cos C + 0.0254 sin C y = 0.3505 + 0.0025 cos A + 0.0991 sin A + 0.0254 cos C - 0.0341 sin C UT1-UTC = -0.1548 - 0.00102 (MJD - 56716) - (UT2-UT1) where A = 2*pi*(MJD-56708)/365.25 and C = 2*pi*(MJD-56708)/435. TAI-UTC(MJD 56709) = 35.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-56708)**0.80 S t = 0.00025 (MJD-56708)**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) 2014 2 21 56709 0.0204 0.3775 -0.15040 2014 2 22 56710 0.0206 0.3788 -0.15165 2014 2 23 56711 0.0209 0.3802 -0.15286 2014 2 24 56712 0.0212 0.3816 -0.15409 2014 2 25 56713 0.0214 0.3830 -0.15538 2014 2 26 56714 0.0218 0.3844 -0.15679 2014 2 27 56715 0.0221 0.3858 -0.15836 2014 2 28 56716 0.0225 0.3872 -0.16012 2014 3 1 56717 0.0230 0.3886 -0.16202 2014 3 2 56718 0.0235 0.3899 -0.16399 2014 3 3 56719 0.0240 0.3912 -0.16592 2014 3 4 56720 0.0246 0.3926 -0.16773 2014 3 5 56721 0.0253 0.3939 -0.16937 2014 3 6 56722 0.0259 0.3952 -0.17083 2014 3 7 56723 0.0265 0.3965 -0.17214 2014 3 8 56724 0.0272 0.3978 -0.17331 2014 3 9 56725 0.0280 0.3991 -0.17438 2014 3 10 56726 0.0287 0.4003 -0.17538 2014 3 11 56727 0.0295 0.4016 -0.17638 2014 3 12 56728 0.0303 0.4028 -0.17740 2014 3 13 56729 0.0312 0.4040 -0.17850 2014 3 14 56730 0.0321 0.4052 -0.17970 2014 3 15 56731 0.0330 0.4064 -0.18102 2014 3 16 56732 0.0339 0.4076 -0.18244 2014 3 17 56733 0.0349 0.4087 -0.18394 2014 3 18 56734 0.0358 0.4099 -0.18548 2014 3 19 56735 0.0369 0.4110 -0.18703 2014 3 20 56736 0.0379 0.4121 -0.18855 2014 3 21 56737 0.0390 0.4132 -0.19001 2014 3 22 56738 0.0401 0.4143 -0.19140 2014 3 23 56739 0.0412 0.4153 -0.19274 2014 3 24 56740 0.0423 0.4164 -0.19410 2014 3 25 56741 0.0435 0.4174 -0.19551 2014 3 26 56742 0.0447 0.4184 -0.19705 2014 3 27 56743 0.0459 0.4194 -0.19874 2014 3 28 56744 0.0471 0.4204 -0.20058 2014 3 29 56745 0.0484 0.4213 -0.20255 2014 3 30 56746 0.0497 0.4223 -0.20455 2014 3 31 56747 0.0510 0.4232 -0.20652 2014 4 1 56748 0.0523 0.4241 -0.20838 2014 4 2 56749 0.0537 0.4250 -0.21008 2014 4 3 56750 0.0551 0.4258 -0.21161 2014 4 4 56751 0.0564 0.4267 -0.21302 2014 4 5 56752 0.0579 0.4275 -0.21431 2014 4 6 56753 0.0593 0.4283 -0.21555 2014 4 7 56754 0.0608 0.4291 -0.21677 2014 4 8 56755 0.0622 0.4298 -0.21802 2014 4 9 56756 0.0637 0.4306 -0.21932 2014 4 10 56757 0.0652 0.4313 -0.22070 2014 4 11 56758 0.0668 0.4320 -0.22217 2014 4 12 56759 0.0683 0.4327 -0.22373 2014 4 13 56760 0.0699 0.4333 -0.22536 2014 4 14 56761 0.0715 0.4339 -0.22702 2014 4 15 56762 0.0731 0.4345 -0.22867 2014 4 16 56763 0.0747 0.4351 -0.23027 2014 4 17 56764 0.0763 0.4357 -0.23179 2014 4 18 56765 0.0780 0.4362 -0.23321 2014 4 19 56766 0.0796 0.4367 -0.23457 2014 4 20 56767 0.0813 0.4372 -0.23588 2014 4 21 56768 0.0830 0.4376 -0.23723 2014 4 22 56769 0.0847 0.4381 -0.23865 2014 4 23 56770 0.0864 0.4385 -0.24018 2014 4 24 56771 0.0882 0.4388 -0.24183 2014 4 25 56772 0.0899 0.4392 -0.24356 2014 4 26 56773 0.0917 0.4395 -0.24533 2014 4 27 56774 0.0934 0.4398 -0.24707 2014 4 28 56775 0.0952 0.4401 -0.24870 2014 4 29 56776 0.0970 0.4404 -0.25018 2014 4 30 56777 0.0988 0.4406 -0.25148 2014 5 1 56778 0.1006 0.4408 -0.25263 2014 5 2 56779 0.1024 0.4409 -0.25365 2014 5 3 56780 0.1043 0.4411 -0.25459 2014 5 4 56781 0.1061 0.4412 -0.25548 2014 5 5 56782 0.1079 0.4413 -0.25638 2014 5 6 56783 0.1098 0.4413 -0.25730 2014 5 7 56784 0.1116 0.4414 -0.25829 2014 5 8 56785 0.1135 0.4414 -0.25935 2014 5 9 56786 0.1154 0.4413 -0.26048 2014 5 10 56787 0.1172 0.4413 -0.26168 2014 5 11 56788 0.1191 0.4412 -0.26291 2014 5 12 56789 0.1210 0.4411 -0.26414 2014 5 13 56790 0.1229 0.4409 -0.26534 2014 5 14 56791 0.1248 0.4408 -0.26646 2014 5 15 56792 0.1266 0.4406 -0.26748 2014 5 16 56793 0.1285 0.4403 -0.26842 2014 5 17 56794 0.1304 0.4401 -0.26930 2014 5 18 56795 0.1323 0.4398 -0.27019 2014 5 19 56796 0.1342 0.4395 -0.27114 2014 5 20 56797 0.1361 0.4391 -0.27218 2014 5 21 56798 0.1380 0.4388 -0.27332 2014 5 22 56799 0.1399 0.4384 -0.27454 2014 5 23 56800 0.1417 0.4379 -0.27579 2014 5 24 56801 0.1436 0.4375 -0.27700 2014 5 25 56802 0.1455 0.4370 -0.27812 2014 5 26 56803 0.1474 0.4365 -0.27911 2014 5 27 56804 0.1492 0.4359 -0.27993 2014 5 28 56805 0.1511 0.4353 -0.28059 2014 5 29 56806 0.1530 0.4347 -0.28112 2014 5 30 56807 0.1548 0.4341 -0.28155 2014 5 31 56808 0.1567 0.4334 -0.28192 2014 6 1 56809 0.1585 0.4327 -0.28229 2014 6 2 56810 0.1603 0.4320 -0.28268 2014 6 3 56811 0.1621 0.4313 -0.28312 2014 6 4 56812 0.1640 0.4305 -0.28363 2014 6 5 56813 0.1658 0.4297 -0.28421 2014 6 6 56814 0.1675 0.4289 -0.28485 2014 6 7 56815 0.1693 0.4280 -0.28554 2014 6 8 56816 0.1711 0.4271 -0.28624 2014 6 9 56817 0.1729 0.4262 -0.28692 2014 6 10 56818 0.1746 0.4253 -0.28754 2014 6 11 56819 0.1763 0.4243 -0.28809 2014 6 12 56820 0.1780 0.4233 -0.28856 2014 6 13 56821 0.1797 0.4223 -0.28896 2014 6 14 56822 0.1814 0.4212 -0.28936 2014 6 15 56823 0.1831 0.4201 -0.28981 2014 6 16 56824 0.1848 0.4190 -0.29036 2014 6 17 56825 0.1864 0.4179 -0.29102 2014 6 18 56826 0.1880 0.4167 -0.29178 2014 6 19 56827 0.1896 0.4156 -0.29257 2014 6 20 56828 0.1912 0.4143 -0.29333 2014 6 21 56829 0.1928 0.4131 -0.29399 2014 6 22 56830 0.1943 0.4119 -0.29452 2014 6 23 56831 0.1959 0.4106 -0.29489 2014 6 24 56832 0.1974 0.4093 -0.29511 2014 6 25 56833 0.1989 0.4079 -0.29519 2014 6 26 56834 0.2004 0.4066 -0.29517 2014 6 27 56835 0.2018 0.4052 -0.29509 2014 6 28 56836 0.2032 0.4038 -0.29500 2014 6 29 56837 0.2046 0.4024 -0.29493 2014 6 30 56838 0.2060 0.4009 -0.29492 2014 7 1 56839 0.2074 0.3994 -0.29498 2014 7 2 56840 0.2087 0.3979 -0.29511 2014 7 3 56841 0.2100 0.3964 -0.29532 2014 7 4 56842 0.2113 0.3949 -0.29558 2014 7 5 56843 0.2126 0.3933 -0.29587 2014 7 6 56844 0.2138 0.3917 -0.29616 2014 7 7 56845 0.2150 0.3901 -0.29642 2014 7 8 56846 0.2162 0.3885 -0.29663 2014 7 9 56847 0.2173 0.3869 -0.29678 2014 7 10 56848 0.2185 0.3852 -0.29688 2014 7 11 56849 0.2196 0.3835 -0.29698 2014 7 12 56850 0.2206 0.3818 -0.29712 2014 7 13 56851 0.2217 0.3801 -0.29738 2014 7 14 56852 0.2227 0.3784 -0.29778 2014 7 15 56853 0.2237 0.3766 -0.29832 2014 7 16 56854 0.2246 0.3749 -0.29895 2014 7 17 56855 0.2256 0.3731 -0.29957 2014 7 18 56856 0.2265 0.3713 -0.30012 2014 7 19 56857 0.2273 0.3695 -0.30053 2014 7 20 56858 0.2282 0.3677 -0.30078 2014 7 21 56859 0.2290 0.3658 -0.30088 2014 7 22 56860 0.2297 0.3640 -0.30084 2014 7 23 56861 0.2305 0.3621 -0.30069 2014 7 24 56862 0.2312 0.3602 -0.30049 2014 7 25 56863 0.2318 0.3583 -0.30028 2014 7 26 56864 0.2325 0.3564 -0.30010 2014 7 27 56865 0.2331 0.3545 -0.29998 2014 7 28 56866 0.2336 0.3526 -0.29994 2014 7 29 56867 0.2342 0.3506 -0.29999 2014 7 30 56868 0.2347 0.3487 -0.30013 2014 7 31 56869 0.2352 0.3467 -0.30033 2014 8 1 56870 0.2356 0.3447 -0.30059 2014 8 2 56871 0.2360 0.3428 -0.30085 2014 8 3 56872 0.2364 0.3408 -0.30111 2014 8 4 56873 0.2367 0.3388 -0.30134 2014 8 5 56874 0.2370 0.3368 -0.30152 2014 8 6 56875 0.2372 0.3348 -0.30166 2014 8 7 56876 0.2375 0.3328 -0.30180 2014 8 8 56877 0.2376 0.3307 -0.30198 2014 8 9 56878 0.2378 0.3287 -0.30227 2014 8 10 56879 0.2379 0.3267 -0.30273 2014 8 11 56880 0.2380 0.3247 -0.30336 2014 8 12 56881 0.2380 0.3226 -0.30414 2014 8 13 56882 0.2380 0.3206 -0.30500 2014 8 14 56883 0.2380 0.3186 -0.30583 2014 8 15 56884 0.2379 0.3165 -0.30655 2014 8 16 56885 0.2378 0.3145 -0.30710 2014 8 17 56886 0.2377 0.3124 -0.30749 2014 8 18 56887 0.2375 0.3104 -0.30771 2014 8 19 56888 0.2373 0.3084 -0.30782 2014 8 20 56889 0.2370 0.3063 -0.30785 2014 8 21 56890 0.2367 0.3043 -0.30785 2014 8 22 56891 0.2364 0.3023 -0.30786 2014 8 23 56892 0.2360 0.3002 -0.30791 2014 8 24 56893 0.2356 0.2982 -0.30803 2014 8 25 56894 0.2352 0.2962 -0.30822 2014 8 26 56895 0.2347 0.2942 -0.30849 2014 8 27 56896 0.2342 0.2922 -0.30882 2014 8 28 56897 0.2336 0.2902 -0.30919 2014 8 29 56898 0.2330 0.2882 -0.30959 2014 8 30 56899 0.2324 0.2862 -0.30999 2014 8 31 56900 0.2317 0.2842 -0.31039 2014 9 1 56901 0.2310 0.2822 -0.31077 2014 9 2 56902 0.2303 0.2802 -0.31114 2014 9 3 56903 0.2295 0.2783 -0.31153 2014 9 4 56904 0.2287 0.2763 -0.31197 2014 9 5 56905 0.2279 0.2744 -0.31254 2014 9 6 56906 0.2270 0.2725 -0.31327 2014 9 7 56907 0.2261 0.2706 -0.31421 2014 9 8 56908 0.2251 0.2687 -0.31537 2014 9 9 56909 0.2241 0.2668 -0.31668 2014 9 10 56910 0.2231 0.2649 -0.31806 2014 9 11 56911 0.2220 0.2630 -0.31941 2014 9 12 56912 0.2209 0.2612 -0.32064 2014 9 13 56913 0.2198 0.2593 -0.32172 2014 9 14 56914 0.2186 0.2575 -0.32264 2014 9 15 56915 0.2174 0.2557 -0.32344 2014 9 16 56916 0.2162 0.2539 -0.32416 2014 9 17 56917 0.2149 0.2522 -0.32484 2014 9 18 56918 0.2136 0.2504 -0.32553 2014 9 19 56919 0.2122 0.2487 -0.32627 2014 9 20 56920 0.2109 0.2470 -0.32711 2014 9 21 56921 0.2095 0.2453 -0.32805 2014 9 22 56922 0.2080 0.2436 -0.32912 2014 9 23 56923 0.2065 0.2420 -0.33030 2014 9 24 56924 0.2050 0.2403 -0.33156 2014 9 25 56925 0.2035 0.2387 -0.33286 2014 9 26 56926 0.2019 0.2371 -0.33418 2014 9 27 56927 0.2003 0.2356 -0.33547 2014 9 28 56928 0.1987 0.2340 -0.33673 2014 9 29 56929 0.1970 0.2325 -0.33792 2014 9 30 56930 0.1953 0.2310 -0.33906 2014 10 1 56931 0.1936 0.2295 -0.34018 2014 10 2 56932 0.1919 0.2281 -0.34134 2014 10 3 56933 0.1901 0.2267 -0.34260 2014 10 4 56934 0.1883 0.2253 -0.34399 2014 10 5 56935 0.1864 0.2239 -0.34556 2014 10 6 56936 0.1846 0.2226 -0.34728 2014 10 7 56937 0.1827 0.2213 -0.34912 2014 10 8 56938 0.1808 0.2200 -0.35100 2014 10 9 56939 0.1788 0.2187 -0.35284 2014 10 10 56940 0.1769 0.2175 -0.35456 2014 10 11 56941 0.1749 0.2163 -0.35615 2014 10 12 56942 0.1729 0.2151 -0.35753 2014 10 13 56943 0.1708 0.2140 -0.35879 2014 10 14 56944 0.1687 0.2128 -0.35994 2014 10 15 56945 0.1667 0.2118 -0.36103 2014 10 16 56946 0.1645 0.2107 -0.36214 2014 10 17 56947 0.1624 0.2097 -0.36330 2014 10 18 56948 0.1603 0.2087 -0.36456 2014 10 19 56949 0.1581 0.2077 -0.36586 2014 10 20 56950 0.1559 0.2068 -0.36721 2014 10 21 56951 0.1537 0.2059 -0.36859 2014 10 22 56952 0.1514 0.2050 -0.36995 2014 10 23 56953 0.1492 0.2042 -0.37130 2014 10 24 56954 0.1469 0.2034 -0.37261 2014 10 25 56955 0.1446 0.2027 -0.37385 2014 10 26 56956 0.1423 0.2019 -0.37503 2014 10 27 56957 0.1400 0.2012 -0.37618 2014 10 28 56958 0.1376 0.2006 -0.37733 2014 10 29 56959 0.1353 0.2000 -0.37856 2014 10 30 56960 0.1329 0.1994 -0.37991 2014 10 31 56961 0.1305 0.1988 -0.38143 2014 11 1 56962 0.1281 0.1983 -0.38314 2014 11 2 56963 0.1257 0.1978 -0.38503 2014 11 3 56964 0.1233 0.1974 -0.38708 2014 11 4 56965 0.1208 0.1970 -0.38920 2014 11 5 56966 0.1184 0.1966 -0.39127 2014 11 6 56967 0.1159 0.1963 -0.39323 2014 11 7 56968 0.1135 0.1960 -0.39501 2014 11 8 56969 0.1110 0.1957 -0.39666 2014 11 9 56970 0.1085 0.1955 -0.39815 2014 11 10 56971 0.1060 0.1953 -0.39947 2014 11 11 56972 0.1035 0.1951 -0.40076 2014 11 12 56973 0.1010 0.1950 -0.40199 2014 11 13 56974 0.0985 0.1950 -0.40324 2014 11 14 56975 0.0960 0.1949 -0.40454 2014 11 15 56976 0.0935 0.1949 -0.40588 2014 11 16 56977 0.0910 0.1950 -0.40723 2014 11 17 56978 0.0884 0.1950 -0.40864 2014 11 18 56979 0.0859 0.1952 -0.41007 2014 11 19 56980 0.0834 0.1953 -0.41144 2014 11 20 56981 0.0809 0.1955 -0.41277 2014 11 21 56982 0.0783 0.1957 -0.41407 2014 11 22 56983 0.0758 0.1960 -0.41529 2014 11 23 56984 0.0733 0.1963 -0.41640 2014 11 24 56985 0.0707 0.1967 -0.41742 2014 11 25 56986 0.0682 0.1971 -0.41840 2014 11 26 56987 0.0657 0.1975 -0.41939 2014 11 27 56988 0.0632 0.1979 -0.42045 2014 11 28 56989 0.0607 0.1984 -0.42165 2014 11 29 56990 0.0582 0.1990 -0.42309 2014 11 30 56991 0.0557 0.1996 -0.42465 2014 12 1 56992 0.0532 0.2002 -0.42630 2014 12 2 56993 0.0507 0.2008 -0.42801 2014 12 3 56994 0.0482 0.2015 -0.42971 2014 12 4 56995 0.0457 0.2023 -0.43134 2014 12 5 56996 0.0433 0.2030 -0.43284 2014 12 6 56997 0.0408 0.2038 -0.43415 2014 12 7 56998 0.0384 0.2047 -0.43534 2014 12 8 56999 0.0360 0.2056 -0.43649 2014 12 9 57000 0.0336 0.2065 -0.43765 2014 12 10 57001 0.0312 0.2074 -0.43884 2014 12 11 57002 0.0288 0.2084 -0.44008 2014 12 12 57003 0.0264 0.2095 -0.44135 2014 12 13 57004 0.0240 0.2105 -0.44268 2014 12 14 57005 0.0217 0.2116 -0.44404 2014 12 15 57006 0.0194 0.2128 -0.44544 2014 12 16 57007 0.0171 0.2139 -0.44683 2014 12 17 57008 0.0148 0.2151 -0.44823 2014 12 18 57009 0.0125 0.2164 -0.44962 2014 12 19 57010 0.0102 0.2177 -0.45096 2014 12 20 57011 0.0080 0.2190 -0.45221 2014 12 21 57012 0.0058 0.2203 -0.45345 2014 12 22 57013 0.0036 0.2217 -0.45468 2014 12 23 57014 0.0014 0.2232 -0.45590 2014 12 24 57015 -0.0007 0.2246 -0.45718 2014 12 25 57016 -0.0028 0.2261 -0.45859 2014 12 26 57017 -0.0049 0.2276 -0.46009 2014 12 27 57018 -0.0070 0.2292 -0.46170 2014 12 28 57019 -0.0091 0.2308 -0.46329 2014 12 29 57020 -0.0111 0.2324 -0.46486 2014 12 30 57021 -0.0131 0.2340 -0.46633 2014 12 31 57022 -0.0150 0.2357 -0.46765 2015 1 1 57023 -0.0170 0.2374 -0.46883 2015 1 2 57024 -0.0189 0.2392 -0.46989 2015 1 3 57025 -0.0208 0.2409 -0.47084 2015 1 4 57026 -0.0227 0.2427 -0.47167 2015 1 5 57027 -0.0245 0.2446 -0.47247 2015 1 6 57028 -0.0263 0.2464 -0.47324 2015 1 7 57029 -0.0281 0.2483 -0.47404 2015 1 8 57030 -0.0298 0.2503 -0.47495 2015 1 9 57031 -0.0315 0.2522 -0.47592 2015 1 10 57032 -0.0332 0.2542 -0.47691 2015 1 11 57033 -0.0348 0.2562 -0.47798 2015 1 12 57034 -0.0364 0.2582 -0.47912 2015 1 13 57035 -0.0380 0.2603 -0.48023 2015 1 14 57036 -0.0395 0.2623 -0.48128 2015 1 15 57037 -0.0410 0.2644 -0.48229 2015 1 16 57038 -0.0425 0.2666 -0.48326 2015 1 17 57039 -0.0440 0.2687 -0.48420 2015 1 18 57040 -0.0453 0.2709 -0.48515 2015 1 19 57041 -0.0467 0.2731 -0.48615 2015 1 20 57042 -0.0480 0.2753 -0.48726 2015 1 21 57043 -0.0493 0.2776 -0.48851 2015 1 22 57044 -0.0506 0.2798 -0.48998 2015 1 23 57045 -0.0518 0.2821 -0.49160 2015 1 24 57046 -0.0529 0.2844 -0.49327 2015 1 25 57047 -0.0541 0.2867 -0.49496 2015 1 26 57048 -0.0552 0.2891 -0.49661 2015 1 27 57049 -0.0562 0.2914 -0.49813 2015 1 28 57050 -0.0572 0.2938 -0.49950 2015 1 29 57051 -0.0582 0.2962 -0.50070 2015 1 30 57052 -0.0591 0.2986 -0.50177 2015 1 31 57053 -0.0600 0.3011 -0.50272 2015 2 1 57054 -0.0609 0.3035 -0.50362 2015 2 2 57055 -0.0617 0.3060 -0.50447 2015 2 3 57056 -0.0624 0.3084 -0.50533 2015 2 4 57057 -0.0632 0.3109 -0.50625 2015 2 5 57058 -0.0638 0.3134 -0.50725 2015 2 6 57059 -0.0645 0.3159 -0.50830 2015 2 7 57060 -0.0651 0.3184 -0.50944 2015 2 8 57061 -0.0656 0.3210 -0.51068 2015 2 9 57062 -0.0661 0.3235 -0.51194 2015 2 10 57063 -0.0666 0.3261 -0.51323 2015 2 11 57064 -0.0670 0.3286 -0.51451 2015 2 12 57065 -0.0674 0.3312 -0.51577 2015 2 13 57066 -0.0677 0.3338 -0.51696 2015 2 14 57067 -0.0680 0.3363 -0.51814 2015 2 15 57068 -0.0682 0.3389 -0.51935 2015 2 16 57069 -0.0684 0.3415 -0.52063 2015 2 17 57070 -0.0685 0.3441 -0.52204 2015 2 18 57071 -0.0686 0.3467 -0.52368 2015 2 19 57072 -0.0687 0.3493 -0.52557 2015 2 20 57073 -0.0687 0.3519 -0.52761 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) 56687 -81.83 0.32 -10.03 0.10 56688 -81.77 0.32 -9.78 0.10 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 56687 0.172 0.127 0.024 0.100 56688 0.180 0.127 0.024 0.100 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).