********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 24 April 2014 Vol. XXVII No. 017 ______________________________________________________________________ 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 = -0.3 seconds beginning 8 May 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 4 18 56765 0.05948 .00009 0.43439 .00010 -0.227126 0.000015 14 4 19 56766 0.06032 .00009 0.43574 .00010 -0.228322 0.000016 14 4 20 56767 0.06108 .00009 0.43690 .00010 -0.229562 0.000015 14 4 21 56768 0.06226 .00009 0.43788 .00010 -0.230857 0.000012 14 4 22 56769 0.06377 .00009 0.43869 .00010 -0.232279 0.000013 14 4 23 56770 0.06533 .00009 0.43932 .00009 -0.233870 0.000013 14 4 24 56771 0.06695 .00009 0.43994 .00009 -0.235611 0.000009 _______________________________________________________________________ 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 = 0.0987 - 0.0655 cos A + 0.0747 sin A + 0.0450 cos C + 0.0205 sin C y = 0.3528 + 0.0688 cos A + 0.0623 sin A + 0.0205 cos C - 0.0450 sin C UT1-UTC = -0.2085 - 0.00100 (MJD - 56779) - (UT2-UT1) where A = 2*pi*(MJD-56771)/365.25 and C = 2*pi*(MJD-56771)/435. TAI-UTC(MJD 56772) = 35.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-56771)**0.80 S t = 0.00025 (MJD-56771)**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 4 25 56772 0.0686 0.4406 -0.23752 2014 4 26 56773 0.0703 0.4413 -0.23952 2014 4 27 56774 0.0718 0.4420 -0.24148 2014 4 28 56775 0.0734 0.4427 -0.24333 2014 4 29 56776 0.0750 0.4434 -0.24499 2014 4 30 56777 0.0766 0.4441 -0.24645 2014 5 1 56778 0.0782 0.4447 -0.24772 2014 5 2 56779 0.0799 0.4452 -0.24887 2014 5 3 56780 0.0816 0.4458 -0.24993 2014 5 4 56781 0.0834 0.4463 -0.25097 2014 5 5 56782 0.0852 0.4468 -0.25206 2014 5 6 56783 0.0871 0.4472 -0.25320 2014 5 7 56784 0.0889 0.4477 -0.25438 2014 5 8 56785 0.0908 0.4480 -0.25559 2014 5 9 56786 0.0926 0.4484 -0.25682 2014 5 10 56787 0.0945 0.4487 -0.25806 2014 5 11 56788 0.0964 0.4490 -0.25927 2014 5 12 56789 0.0983 0.4492 -0.26047 2014 5 13 56790 0.1002 0.4494 -0.26161 2014 5 14 56791 0.1021 0.4496 -0.26268 2014 5 15 56792 0.1041 0.4498 -0.26367 2014 5 16 56793 0.1060 0.4499 -0.26458 2014 5 17 56794 0.1080 0.4500 -0.26542 2014 5 18 56795 0.1099 0.4501 -0.26626 2014 5 19 56796 0.1119 0.4501 -0.26714 2014 5 20 56797 0.1139 0.4501 -0.26810 2014 5 21 56798 0.1159 0.4501 -0.26915 2014 5 22 56799 0.1179 0.4500 -0.27029 2014 5 23 56800 0.1199 0.4499 -0.27143 2014 5 24 56801 0.1219 0.4498 -0.27253 2014 5 25 56802 0.1239 0.4496 -0.27351 2014 5 26 56803 0.1259 0.4494 -0.27435 2014 5 27 56804 0.1279 0.4492 -0.27501 2014 5 28 56805 0.1299 0.4489 -0.27552 2014 5 29 56806 0.1319 0.4486 -0.27590 2014 5 30 56807 0.1339 0.4483 -0.27619 2014 5 31 56808 0.1359 0.4479 -0.27645 2014 6 1 56809 0.1379 0.4475 -0.27671 2014 6 2 56810 0.1399 0.4471 -0.27700 2014 6 3 56811 0.1418 0.4466 -0.27736 2014 6 4 56812 0.1438 0.4461 -0.27780 2014 6 5 56813 0.1458 0.4456 -0.27831 2014 6 6 56814 0.1478 0.4451 -0.27888 2014 6 7 56815 0.1498 0.4445 -0.27950 2014 6 8 56816 0.1517 0.4439 -0.28013 2014 6 9 56817 0.1537 0.4432 -0.28075 2014 6 10 56818 0.1556 0.4425 -0.28132 2014 6 11 56819 0.1575 0.4418 -0.28180 2014 6 12 56820 0.1595 0.4411 -0.28220 2014 6 13 56821 0.1614 0.4403 -0.28253 2014 6 14 56822 0.1633 0.4395 -0.28285 2014 6 15 56823 0.1652 0.4387 -0.28321 2014 6 16 56824 0.1671 0.4378 -0.28366 2014 6 17 56825 0.1689 0.4369 -0.28422 2014 6 18 56826 0.1708 0.4360 -0.28488 2014 6 19 56827 0.1726 0.4350 -0.28558 2014 6 20 56828 0.1744 0.4340 -0.28625 2014 6 21 56829 0.1763 0.4330 -0.28683 2014 6 22 56830 0.1781 0.4319 -0.28728 2014 6 23 56831 0.1798 0.4309 -0.28758 2014 6 24 56832 0.1816 0.4298 -0.28773 2014 6 25 56833 0.1833 0.4286 -0.28775 2014 6 26 56834 0.1851 0.4275 -0.28766 2014 6 27 56835 0.1868 0.4263 -0.28752 2014 6 28 56836 0.1885 0.4251 -0.28736 2014 6 29 56837 0.1901 0.4238 -0.28723 2014 6 30 56838 0.1918 0.4226 -0.28714 2014 7 1 56839 0.1934 0.4213 -0.28713 2014 7 2 56840 0.1950 0.4199 -0.28720 2014 7 3 56841 0.1966 0.4186 -0.28735 2014 7 4 56842 0.1982 0.4172 -0.28756 2014 7 5 56843 0.1997 0.4158 -0.28781 2014 7 6 56844 0.2012 0.4144 -0.28806 2014 7 7 56845 0.2027 0.4129 -0.28829 2014 7 8 56846 0.2042 0.4114 -0.28847 2014 7 9 56847 0.2056 0.4099 -0.28859 2014 7 10 56848 0.2071 0.4084 -0.28865 2014 7 11 56849 0.2085 0.4069 -0.28871 2014 7 12 56850 0.2098 0.4053 -0.28881 2014 7 13 56851 0.2112 0.4037 -0.28903 2014 7 14 56852 0.2125 0.4021 -0.28939 2014 7 15 56853 0.2138 0.4004 -0.28989 2014 7 16 56854 0.2150 0.3988 -0.29048 2014 7 17 56855 0.2163 0.3971 -0.29106 2014 7 18 56856 0.2175 0.3954 -0.29158 2014 7 19 56857 0.2186 0.3937 -0.29196 2014 7 20 56858 0.2198 0.3919 -0.29218 2014 7 21 56859 0.2209 0.3902 -0.29224 2014 7 22 56860 0.2220 0.3884 -0.29217 2014 7 23 56861 0.2230 0.3866 -0.29200 2014 7 24 56862 0.2241 0.3848 -0.29177 2014 7 25 56863 0.2250 0.3829 -0.29153 2014 7 26 56864 0.2260 0.3811 -0.29131 2014 7 27 56865 0.2269 0.3792 -0.29115 2014 7 28 56866 0.2278 0.3773 -0.29106 2014 7 29 56867 0.2287 0.3754 -0.29106 2014 7 30 56868 0.2295 0.3735 -0.29113 2014 7 31 56869 0.2303 0.3716 -0.29128 2014 8 1 56870 0.2311 0.3696 -0.29147 2014 8 2 56871 0.2318 0.3677 -0.29167 2014 8 3 56872 0.2325 0.3657 -0.29187 2014 8 4 56873 0.2331 0.3637 -0.29203 2014 8 5 56874 0.2338 0.3617 -0.29214 2014 8 6 56875 0.2343 0.3597 -0.29222 2014 8 7 56876 0.2349 0.3577 -0.29229 2014 8 8 56877 0.2354 0.3557 -0.29241 2014 8 9 56878 0.2359 0.3536 -0.29263 2014 8 10 56879 0.2363 0.3516 -0.29302 2014 8 11 56880 0.2367 0.3495 -0.29359 2014 8 12 56881 0.2371 0.3475 -0.29431 2014 8 13 56882 0.2374 0.3454 -0.29510 2014 8 14 56883 0.2377 0.3433 -0.29587 2014 8 15 56884 0.2380 0.3413 -0.29654 2014 8 16 56885 0.2382 0.3392 -0.29705 2014 8 17 56886 0.2384 0.3371 -0.29740 2014 8 18 56887 0.2386 0.3350 -0.29760 2014 8 19 56888 0.2387 0.3329 -0.29768 2014 8 20 56889 0.2387 0.3308 -0.29770 2014 8 21 56890 0.2388 0.3287 -0.29770 2014 8 22 56891 0.2388 0.3265 -0.29773 2014 8 23 56892 0.2387 0.3244 -0.29782 2014 8 24 56893 0.2386 0.3223 -0.29799 2014 8 25 56894 0.2385 0.3202 -0.29826 2014 8 26 56895 0.2384 0.3181 -0.29863 2014 8 27 56896 0.2382 0.3160 -0.29908 2014 8 28 56897 0.2379 0.3139 -0.29960 2014 8 29 56898 0.2377 0.3118 -0.30014 2014 8 30 56899 0.2374 0.3097 -0.30069 2014 8 31 56900 0.2370 0.3075 -0.30121 2014 9 1 56901 0.2366 0.3054 -0.30169 2014 9 2 56902 0.2362 0.3034 -0.30214 2014 9 3 56903 0.2358 0.3013 -0.30257 2014 9 4 56904 0.2353 0.2992 -0.30304 2014 9 5 56905 0.2347 0.2971 -0.30359 2014 9 6 56906 0.2341 0.2950 -0.30431 2014 9 7 56907 0.2335 0.2930 -0.30521 2014 9 8 56908 0.2329 0.2909 -0.30630 2014 9 9 56909 0.2322 0.2889 -0.30754 2014 9 10 56910 0.2315 0.2868 -0.30884 2014 9 11 56911 0.2307 0.2848 -0.31008 2014 9 12 56912 0.2299 0.2828 -0.31121 2014 9 13 56913 0.2290 0.2808 -0.31217 2014 9 14 56914 0.2282 0.2788 -0.31297 2014 9 15 56915 0.2273 0.2768 -0.31363 2014 9 16 56916 0.2263 0.2748 -0.31421 2014 9 17 56917 0.2253 0.2728 -0.31476 2014 9 18 56918 0.2243 0.2709 -0.31531 2014 9 19 56919 0.2232 0.2690 -0.31591 2014 9 20 56920 0.2221 0.2670 -0.31659 2014 9 21 56921 0.2210 0.2651 -0.31737 2014 9 22 56922 0.2199 0.2633 -0.31824 2014 9 23 56923 0.2186 0.2614 -0.31920 2014 9 24 56924 0.2174 0.2595 -0.32023 2014 9 25 56925 0.2161 0.2577 -0.32130 2014 9 26 56926 0.2148 0.2559 -0.32238 2014 9 27 56927 0.2135 0.2541 -0.32343 2014 9 28 56928 0.2121 0.2523 -0.32444 2014 9 29 56929 0.2107 0.2506 -0.32539 2014 9 30 56930 0.2093 0.2488 -0.32631 2014 10 1 56931 0.2078 0.2471 -0.32724 2014 10 2 56932 0.2063 0.2454 -0.32822 2014 10 3 56933 0.2048 0.2437 -0.32932 2014 10 4 56934 0.2032 0.2421 -0.33058 2014 10 5 56935 0.2016 0.2405 -0.33202 2014 10 6 56936 0.2000 0.2389 -0.33363 2014 10 7 56937 0.1983 0.2373 -0.33534 2014 10 8 56938 0.1966 0.2357 -0.33707 2014 10 9 56939 0.1949 0.2342 -0.33872 2014 10 10 56940 0.1932 0.2327 -0.34022 2014 10 11 56941 0.1914 0.2312 -0.34156 2014 10 12 56942 0.1896 0.2298 -0.34274 2014 10 13 56943 0.1877 0.2283 -0.34380 2014 10 14 56944 0.1859 0.2270 -0.34479 2014 10 15 56945 0.1840 0.2256 -0.34576 2014 10 16 56946 0.1821 0.2242 -0.34675 2014 10 17 56947 0.1801 0.2229 -0.34780 2014 10 18 56948 0.1782 0.2216 -0.34893 2014 10 19 56949 0.1762 0.2204 -0.35014 2014 10 20 56950 0.1742 0.2192 -0.35143 2014 10 21 56951 0.1721 0.2180 -0.35279 2014 10 22 56952 0.1701 0.2168 -0.35418 2014 10 23 56953 0.1680 0.2157 -0.35559 2014 10 24 56954 0.1659 0.2146 -0.35697 2014 10 25 56955 0.1637 0.2135 -0.35830 2014 10 26 56956 0.1616 0.2125 -0.35956 2014 10 27 56957 0.1594 0.2115 -0.36077 2014 10 28 56958 0.1572 0.2105 -0.36194 2014 10 29 56959 0.1550 0.2096 -0.36313 2014 10 30 56960 0.1528 0.2087 -0.36440 2014 10 31 56961 0.1505 0.2078 -0.36578 2014 11 1 56962 0.1483 0.2070 -0.36730 2014 11 2 56963 0.1460 0.2062 -0.36894 2014 11 3 56964 0.1437 0.2054 -0.37068 2014 11 4 56965 0.1414 0.2047 -0.37244 2014 11 5 56966 0.1390 0.2040 -0.37415 2014 11 6 56967 0.1367 0.2033 -0.37573 2014 11 7 56968 0.1343 0.2027 -0.37715 2014 11 8 56969 0.1320 0.2021 -0.37839 2014 11 9 56970 0.1296 0.2015 -0.37949 2014 11 10 56971 0.1272 0.2010 -0.38049 2014 11 11 56972 0.1248 0.2005 -0.38144 2014 11 12 56973 0.1223 0.2001 -0.38239 2014 11 13 56974 0.1199 0.1997 -0.38337 2014 11 14 56975 0.1175 0.1993 -0.38441 2014 11 15 56976 0.1150 0.1990 -0.38550 2014 11 16 56977 0.1126 0.1987 -0.38665 2014 11 17 56978 0.1101 0.1984 -0.38786 2014 11 18 56979 0.1076 0.1982 -0.38910 2014 11 19 56980 0.1051 0.1980 -0.39037 2014 11 20 56981 0.1027 0.1979 -0.39163 2014 11 21 56982 0.1002 0.1978 -0.39286 2014 11 22 56983 0.0977 0.1977 -0.39405 2014 11 23 56984 0.0952 0.1977 -0.39518 2014 11 24 56985 0.0927 0.1977 -0.39627 2014 11 25 56986 0.0902 0.1978 -0.39735 2014 11 26 56987 0.0877 0.1979 -0.39845 2014 11 27 56988 0.0852 0.1980 -0.39962 2014 11 28 56989 0.0827 0.1982 -0.40088 2014 11 29 56990 0.0802 0.1984 -0.40224 2014 11 30 56991 0.0777 0.1986 -0.40371 2014 12 1 56992 0.0752 0.1989 -0.40522 2014 12 2 56993 0.0727 0.1992 -0.40671 2014 12 3 56994 0.0702 0.1996 -0.40814 2014 12 4 56995 0.0677 0.2000 -0.40944 2014 12 5 56996 0.0652 0.2004 -0.41064 2014 12 6 56997 0.0627 0.2009 -0.41177 2014 12 7 56998 0.0602 0.2014 -0.41283 2014 12 8 56999 0.0578 0.2020 -0.41383 2014 12 9 57000 0.0553 0.2026 -0.41473 2014 12 10 57001 0.0529 0.2032 -0.41560 2014 12 11 57002 0.0504 0.2039 -0.41649 2014 12 12 57003 0.0480 0.2046 -0.41743 2014 12 13 57004 0.0456 0.2053 -0.41851 2014 12 14 57005 0.0432 0.2061 -0.41964 2014 12 15 57006 0.0408 0.2069 -0.42081 2014 12 16 57007 0.0384 0.2078 -0.42194 2014 12 17 57008 0.0360 0.2087 -0.42304 2014 12 18 57009 0.0336 0.2096 -0.42411 2014 12 19 57010 0.0313 0.2106 -0.42513 2014 12 20 57011 0.0290 0.2116 -0.42609 2014 12 21 57012 0.0267 0.2126 -0.42703 2014 12 22 57013 0.0244 0.2137 -0.42797 2014 12 23 57014 0.0221 0.2148 -0.42893 2014 12 24 57015 0.0198 0.2160 -0.43000 2014 12 25 57016 0.0176 0.2172 -0.43123 2014 12 26 57017 0.0153 0.2184 -0.43260 2014 12 27 57018 0.0131 0.2197 -0.43406 2014 12 28 57019 0.0110 0.2210 -0.43553 2014 12 29 57020 0.0088 0.2223 -0.43696 2014 12 30 57021 0.0067 0.2237 -0.43830 2014 12 31 57022 0.0045 0.2251 -0.43953 2015 1 1 57023 0.0024 0.2265 -0.44060 2015 1 2 57024 0.0004 0.2280 -0.44157 2015 1 3 57025 -0.0017 0.2295 -0.44244 2015 1 4 57026 -0.0037 0.2310 -0.44325 2015 1 5 57027 -0.0057 0.2325 -0.44401 2015 1 6 57028 -0.0077 0.2341 -0.44482 2015 1 7 57029 -0.0096 0.2358 -0.44565 2015 1 8 57030 -0.0115 0.2374 -0.44649 2015 1 9 57031 -0.0134 0.2391 -0.44739 2015 1 10 57032 -0.0153 0.2408 -0.44835 2015 1 11 57033 -0.0171 0.2426 -0.44939 2015 1 12 57034 -0.0189 0.2443 -0.45054 2015 1 13 57035 -0.0207 0.2461 -0.45171 2015 1 14 57036 -0.0224 0.2480 -0.45290 2015 1 15 57037 -0.0242 0.2498 -0.45404 2015 1 16 57038 -0.0258 0.2517 -0.45510 2015 1 17 57039 -0.0275 0.2537 -0.45610 2015 1 18 57040 -0.0291 0.2556 -0.45707 2015 1 19 57041 -0.0307 0.2576 -0.45805 2015 1 20 57042 -0.0322 0.2596 -0.45912 2015 1 21 57043 -0.0338 0.2616 -0.46037 2015 1 22 57044 -0.0352 0.2636 -0.46182 2015 1 23 57045 -0.0367 0.2657 -0.46340 2015 1 24 57046 -0.0381 0.2678 -0.46507 2015 1 25 57047 -0.0395 0.2699 -0.46676 2015 1 26 57048 -0.0408 0.2720 -0.46840 2015 1 27 57049 -0.0421 0.2742 -0.46995 2015 1 28 57050 -0.0434 0.2764 -0.47132 2015 1 29 57051 -0.0446 0.2786 -0.47253 2015 1 30 57052 -0.0458 0.2808 -0.47362 2015 1 31 57053 -0.0469 0.2830 -0.47468 2015 2 1 57054 -0.0481 0.2853 -0.47570 2015 2 2 57055 -0.0491 0.2876 -0.47672 2015 2 3 57056 -0.0502 0.2899 -0.47777 2015 2 4 57057 -0.0512 0.2922 -0.47888 2015 2 5 57058 -0.0521 0.2945 -0.48003 2015 2 6 57059 -0.0530 0.2969 -0.48126 2015 2 7 57060 -0.0539 0.2992 -0.48251 2015 2 8 57061 -0.0547 0.3016 -0.48379 2015 2 9 57062 -0.0555 0.3040 -0.48508 2015 2 10 57063 -0.0563 0.3064 -0.48637 2015 2 11 57064 -0.0570 0.3088 -0.48766 2015 2 12 57065 -0.0577 0.3113 -0.48894 2015 2 13 57066 -0.0583 0.3137 -0.49022 2015 2 14 57067 -0.0589 0.3162 -0.49151 2015 2 15 57068 -0.0594 0.3186 -0.49277 2015 2 16 57069 -0.0599 0.3211 -0.49413 2015 2 17 57070 -0.0603 0.3236 -0.49558 2015 2 18 57071 -0.0607 0.3261 -0.49717 2015 2 19 57072 -0.0611 0.3286 -0.49896 2015 2 20 57073 -0.0614 0.3311 -0.50089 2015 2 21 57074 -0.0617 0.3336 -0.50289 2015 2 22 57075 -0.0619 0.3361 -0.50482 2015 2 23 57076 -0.0621 0.3387 -0.50658 2015 2 24 57077 -0.0623 0.3412 -0.50815 2015 2 25 57078 -0.0624 0.3437 -0.50949 2015 2 26 57079 -0.0624 0.3463 -0.51065 2015 2 27 57080 -0.0624 0.3488 -0.51172 2015 2 28 57081 -0.0624 0.3514 -0.51271 2015 3 1 57082 -0.0623 0.3539 -0.51370 2015 3 2 57083 -0.0622 0.3564 -0.51478 2015 3 3 57084 -0.0620 0.3590 -0.51593 2015 3 4 57085 -0.0618 0.3615 -0.51722 2015 3 5 57086 -0.0616 0.3641 -0.51864 2015 3 6 57087 -0.0613 0.3666 -0.52017 2015 3 7 57088 -0.0609 0.3691 -0.52178 2015 3 8 57089 -0.0605 0.3717 -0.52347 2015 3 9 57090 -0.0601 0.3742 -0.52519 2015 3 10 57091 -0.0596 0.3767 -0.52692 2015 3 11 57092 -0.0591 0.3792 -0.52859 2015 3 12 57093 -0.0585 0.3817 -0.53021 2015 3 13 57094 -0.0579 0.3842 -0.53177 2015 3 14 57095 -0.0572 0.3867 -0.53336 2015 3 15 57096 -0.0565 0.3892 -0.53498 2015 3 16 57097 -0.0558 0.3917 -0.53664 2015 3 17 57098 -0.0550 0.3942 -0.53848 2015 3 18 57099 -0.0542 0.3966 -0.54046 2015 3 19 57100 -0.0533 0.3990 -0.54262 2015 3 20 57101 -0.0524 0.4015 -0.54488 2015 3 21 57102 -0.0514 0.4039 -0.54715 2015 3 22 57103 -0.0504 0.4063 -0.54929 2015 3 23 57104 -0.0493 0.4087 -0.55127 2015 3 24 57105 -0.0482 0.4111 -0.55306 2015 3 25 57106 -0.0471 0.4134 -0.55460 2015 3 26 57107 -0.0459 0.4158 -0.55598 2015 3 27 57108 -0.0447 0.4181 -0.55730 2015 3 28 57109 -0.0434 0.4204 -0.55856 2015 3 29 57110 -0.0421 0.4227 -0.55980 2015 3 30 57111 -0.0408 0.4250 -0.56103 2015 3 31 57112 -0.0394 0.4272 -0.56229 2015 4 1 57113 -0.0380 0.4295 -0.56357 2015 4 2 57114 -0.0365 0.4317 -0.56490 2015 4 3 57115 -0.0350 0.4339 -0.56627 2015 4 4 57116 -0.0335 0.4360 -0.56779 2015 4 5 57117 -0.0319 0.4382 -0.56932 2015 4 6 57118 -0.0302 0.4403 -0.57088 2015 4 7 57119 -0.0286 0.4424 -0.57248 2015 4 8 57120 -0.0269 0.4445 -0.57410 2015 4 9 57121 -0.0251 0.4466 -0.57571 2015 4 10 57122 -0.0234 0.4486 -0.57732 2015 4 11 57123 -0.0216 0.4506 -0.57889 2015 4 12 57124 -0.0197 0.4526 -0.58051 2015 4 13 57125 -0.0178 0.4545 -0.58227 2015 4 14 57126 -0.0159 0.4564 -0.58422 2015 4 15 57127 -0.0140 0.4583 -0.58636 2015 4 16 57128 -0.0120 0.4602 -0.58865 2015 4 17 57129 -0.0100 0.4620 -0.59098 2015 4 18 57130 -0.0079 0.4638 -0.59328 2015 4 19 57131 -0.0058 0.4656 -0.59545 2015 4 20 57132 -0.0037 0.4673 -0.59744 2015 4 21 57133 -0.0016 0.4691 -0.59923 2015 4 22 57134 0.0006 0.4707 -0.60087 2015 4 23 57135 0.0028 0.4724 -0.60241 2015 4 24 57136 0.0051 0.4740 -0.60388 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) 56745 -79.64 0.30 -12.38 0.04 56746 -79.69 0.30 -12.34 0.04 56747 -79.70 0.30 -12.56 0.04 56748 -79.70 0.20 -12.88 0.07 56749 -79.65 0.18 -13.06 0.06 56750 -79.53 0.18 -13.06 0.06 56751 -79.39 0.18 -12.98 0.06 56752 -79.36 0.21 -12.97 0.05 56753 -79.42 0.15 -13.06 0.04 56754 -79.39 0.30 -13.22 0.02 56755 -79.11 0.30 -13.36 0.01 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 56745 0.233 0.119 0.010 0.040 56746 0.212 0.119 0.052 0.040 56747 0.209 0.119 0.091 0.040 56748 0.222 0.080 0.092 0.070 56749 0.255 0.072 0.085 0.060 56750 0.295 0.072 0.065 0.060 56751 0.336 0.072 0.052 0.060 56752 0.362 0.084 0.043 0.050 56753 0.378 0.060 0.059 0.040 56754 0.389 0.119 0.069 0.020 56755 0.404 0.119 0.064 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).