********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 5 June 2014 Vol. XXVII No. 023 ______________________________________________________________________ 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 = -0.3 seconds beginning 8 May 2014 at 0000 UTC Beginning 1 July 2012: TAI-UTC = 35.000 000 seconds *********************************************************************** * As of Bulletin A Vol. XXVII, No. 023, on 05 Jun 2014, we have * * incorporated the new USNO VLBI solution usno2014a.eops and * * usno2012a.eopi. We have also updated the systematic corrections * * to the ILRS SLR solution. The cumulative effect of these changes * * appears to be less than 0.1 mas in polar motion and 10 us in * * UT1-UTC. * * * * 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 5 30 56807 0.12541 .00009 0.44423 .00009 -0.281811 0.000013 14 5 31 56808 0.12771 .00009 0.44356 .00009 -0.282223 0.000015 14 6 1 56809 0.12941 .00009 0.44286 .00009 -0.282622 0.000014 14 6 2 56810 0.13065 .00009 0.44195 .00009 -0.283039 0.000010 14 6 3 56811 0.13173 .00009 0.44089 .00009 -0.283491 0.000009 14 6 4 56812 0.13300 .00009 0.43981 .00009 -0.283986 0.000009 14 6 5 56813 0.13450 .00009 0.43885 .00009 -0.284578 0.000055 IERS Final Values MJD x y UT1-UTC " " s 14 4 2 56749 0.0447 0.4225 -0.20647 14 4 3 56750 0.0455 0.4238 -0.20782 14 4 4 56751 0.0460 0.4249 -0.20907 14 4 5 56752 0.0464 0.4257 -0.21028 14 4 6 56753 0.0468 0.4263 -0.21147 14 4 7 56754 0.0477 0.4264 -0.21267 14 4 8 56755 0.0492 0.4272 -0.21387 14 4 9 56756 0.0507 0.4282 -0.21508 14 4 10 56757 0.0522 0.4290 -0.21635 14 4 11 56758 0.0532 0.4298 -0.21767 14 4 12 56759 0.0542 0.4305 -0.21907 14 4 13 56760 0.0549 0.4308 -0.22052 14 4 14 56761 0.0558 0.4311 -0.22198 14 4 15 56762 0.0567 0.4321 -0.22342 14 4 16 56763 0.0574 0.4327 -0.22473 14 4 17 56764 0.0583 0.4333 -0.22594 14 4 18 56765 0.0596 0.4344 -0.22713 14 4 19 56766 0.0603 0.4359 -0.22833 14 4 20 56767 0.0611 0.4369 -0.22957 14 4 21 56768 0.0622 0.4379 -0.23087 14 4 22 56769 0.0638 0.4386 -0.23231 14 4 23 56770 0.0653 0.4394 -0.23391 14 4 24 56771 0.0669 0.4399 -0.23562 14 4 25 56772 0.0686 0.4404 -0.23748 14 4 26 56773 0.0703 0.4410 -0.23945 14 4 27 56774 0.0718 0.4417 -0.24145 14 4 28 56775 0.0730 0.4423 -0.24333 14 4 29 56776 0.0743 0.4426 -0.24504 14 4 30 56777 0.0761 0.4428 -0.24654 14 5 1 56778 0.0780 0.4431 -0.24785 _______________________________________________________________________ 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 = 0.0937 - 0.0019 cos A + 0.0951 sin A + 0.0481 cos C - 0.0044 sin C y = 0.3494 + 0.0892 cos A + 0.0029 sin A - 0.0044 cos C - 0.0481 sin C UT1-UTC = -0.2588 - 0.00100 (MJD - 56821) - (UT2-UT1) where A = 2*pi*(MJD-56813)/365.25 and C = 2*pi*(MJD-56813)/435. TAI-UTC(MJD 56814) = 35.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-56813)**0.80 S t = 0.00025 (MJD-56813)**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 6 6 56814 0.1362 0.4380 -0.28528 2014 6 7 56815 0.1380 0.4372 -0.28606 2014 6 8 56816 0.1398 0.4365 -0.28686 2014 6 9 56817 0.1416 0.4359 -0.28766 2014 6 10 56818 0.1434 0.4352 -0.28844 2014 6 11 56819 0.1451 0.4345 -0.28919 2014 6 12 56820 0.1468 0.4338 -0.28988 2014 6 13 56821 0.1485 0.4330 -0.29052 2014 6 14 56822 0.1501 0.4322 -0.29114 2014 6 15 56823 0.1518 0.4314 -0.29179 2014 6 16 56824 0.1534 0.4306 -0.29250 2014 6 17 56825 0.1551 0.4299 -0.29329 2014 6 18 56826 0.1567 0.4291 -0.29412 2014 6 19 56827 0.1583 0.4283 -0.29497 2014 6 20 56828 0.1600 0.4275 -0.29577 2014 6 21 56829 0.1616 0.4267 -0.29648 2014 6 22 56830 0.1632 0.4258 -0.29706 2014 6 23 56831 0.1649 0.4250 -0.29748 2014 6 24 56832 0.1665 0.4241 -0.29777 2014 6 25 56833 0.1681 0.4232 -0.29794 2014 6 26 56834 0.1696 0.4223 -0.29803 2014 6 27 56835 0.1712 0.4213 -0.29806 2014 6 28 56836 0.1727 0.4204 -0.29807 2014 6 29 56837 0.1743 0.4194 -0.29809 2014 6 30 56838 0.1758 0.4184 -0.29816 2014 7 1 56839 0.1773 0.4174 -0.29832 2014 7 2 56840 0.1788 0.4164 -0.29857 2014 7 3 56841 0.1802 0.4153 -0.29889 2014 7 4 56842 0.1817 0.4142 -0.29927 2014 7 5 56843 0.1831 0.4131 -0.29967 2014 7 6 56844 0.1846 0.4120 -0.30008 2014 7 7 56845 0.1860 0.4108 -0.30046 2014 7 8 56846 0.1873 0.4097 -0.30080 2014 7 9 56847 0.1887 0.4085 -0.30107 2014 7 10 56848 0.1901 0.4073 -0.30128 2014 7 11 56849 0.1914 0.4061 -0.30147 2014 7 12 56850 0.1927 0.4048 -0.30169 2014 7 13 56851 0.1940 0.4035 -0.30200 2014 7 14 56852 0.1952 0.4023 -0.30244 2014 7 15 56853 0.1965 0.4009 -0.30300 2014 7 16 56854 0.1977 0.3996 -0.30364 2014 7 17 56855 0.1989 0.3983 -0.30427 2014 7 18 56856 0.2001 0.3969 -0.30483 2014 7 19 56857 0.2012 0.3955 -0.30525 2014 7 20 56858 0.2023 0.3941 -0.30550 2014 7 21 56859 0.2035 0.3927 -0.30557 2014 7 22 56860 0.2045 0.3912 -0.30550 2014 7 23 56861 0.2056 0.3898 -0.30532 2014 7 24 56862 0.2066 0.3883 -0.30508 2014 7 25 56863 0.2076 0.3868 -0.30482 2014 7 26 56864 0.2086 0.3853 -0.30457 2014 7 27 56865 0.2095 0.3837 -0.30436 2014 7 28 56866 0.2104 0.3822 -0.30422 2014 7 29 56867 0.2113 0.3806 -0.30416 2014 7 30 56868 0.2122 0.3790 -0.30418 2014 7 31 56869 0.2130 0.3775 -0.30427 2014 8 1 56870 0.2139 0.3758 -0.30442 2014 8 2 56871 0.2146 0.3742 -0.30458 2014 8 3 56872 0.2154 0.3726 -0.30474 2014 8 4 56873 0.2161 0.3709 -0.30487 2014 8 5 56874 0.2168 0.3693 -0.30496 2014 8 6 56875 0.2175 0.3676 -0.30503 2014 8 7 56876 0.2181 0.3659 -0.30509 2014 8 8 56877 0.2187 0.3642 -0.30519 2014 8 9 56878 0.2193 0.3625 -0.30541 2014 8 10 56879 0.2198 0.3608 -0.30580 2014 8 11 56880 0.2203 0.3590 -0.30637 2014 8 12 56881 0.2208 0.3573 -0.30709 2014 8 13 56882 0.2212 0.3555 -0.30789 2014 8 14 56883 0.2217 0.3538 -0.30866 2014 8 15 56884 0.2220 0.3520 -0.30932 2014 8 16 56885 0.2224 0.3502 -0.30982 2014 8 17 56886 0.2227 0.3484 -0.31015 2014 8 18 56887 0.2230 0.3466 -0.31032 2014 8 19 56888 0.2232 0.3448 -0.31039 2014 8 20 56889 0.2235 0.3430 -0.31039 2014 8 21 56890 0.2237 0.3412 -0.31038 2014 8 22 56891 0.2238 0.3394 -0.31039 2014 8 23 56892 0.2239 0.3376 -0.31048 2014 8 24 56893 0.2240 0.3357 -0.31065 2014 8 25 56894 0.2241 0.3339 -0.31093 2014 8 26 56895 0.2241 0.3321 -0.31130 2014 8 27 56896 0.2241 0.3302 -0.31176 2014 8 28 56897 0.2240 0.3284 -0.31228 2014 8 29 56898 0.2239 0.3266 -0.31283 2014 8 30 56899 0.2238 0.3247 -0.31337 2014 8 31 56900 0.2237 0.3229 -0.31389 2014 9 1 56901 0.2235 0.3210 -0.31438 2014 9 2 56902 0.2233 0.3192 -0.31482 2014 9 3 56903 0.2230 0.3174 -0.31526 2014 9 4 56904 0.2227 0.3155 -0.31574 2014 9 5 56905 0.2224 0.3137 -0.31631 2014 9 6 56906 0.2221 0.3119 -0.31705 2014 9 7 56907 0.2217 0.3100 -0.31799 2014 9 8 56908 0.2213 0.3082 -0.31912 2014 9 9 56909 0.2208 0.3064 -0.32039 2014 9 10 56910 0.2203 0.3046 -0.32172 2014 9 11 56911 0.2198 0.3028 -0.32300 2014 9 12 56912 0.2192 0.3010 -0.32416 2014 9 13 56913 0.2186 0.2992 -0.32514 2014 9 14 56914 0.2180 0.2974 -0.32597 2014 9 15 56915 0.2174 0.2956 -0.32666 2014 9 16 56916 0.2167 0.2938 -0.32726 2014 9 17 56917 0.2159 0.2920 -0.32783 2014 9 18 56918 0.2152 0.2903 -0.32841 2014 9 19 56919 0.2144 0.2885 -0.32903 2014 9 20 56920 0.2136 0.2868 -0.32973 2014 9 21 56921 0.2127 0.2851 -0.33053 2014 9 22 56922 0.2118 0.2834 -0.33143 2014 9 23 56923 0.2109 0.2817 -0.33242 2014 9 24 56924 0.2099 0.2800 -0.33348 2014 9 25 56925 0.2090 0.2783 -0.33457 2014 9 26 56926 0.2079 0.2766 -0.33567 2014 9 27 56927 0.2069 0.2750 -0.33674 2014 9 28 56928 0.2058 0.2733 -0.33776 2014 9 29 56929 0.2047 0.2717 -0.33873 2014 9 30 56930 0.2036 0.2701 -0.33966 2014 10 1 56931 0.2024 0.2685 -0.34059 2014 10 2 56932 0.2012 0.2669 -0.34158 2014 10 3 56933 0.1999 0.2654 -0.34268 2014 10 4 56934 0.1987 0.2638 -0.34395 2014 10 5 56935 0.1974 0.2623 -0.34540 2014 10 6 56936 0.1961 0.2608 -0.34701 2014 10 7 56937 0.1947 0.2593 -0.34872 2014 10 8 56938 0.1933 0.2578 -0.35045 2014 10 9 56939 0.1919 0.2564 -0.35209 2014 10 10 56940 0.1905 0.2550 -0.35359 2014 10 11 56941 0.1890 0.2536 -0.35493 2014 10 12 56942 0.1876 0.2522 -0.35610 2014 10 13 56943 0.1860 0.2508 -0.35716 2014 10 14 56944 0.1845 0.2495 -0.35814 2014 10 15 56945 0.1829 0.2481 -0.35910 2014 10 16 56946 0.1813 0.2468 -0.36008 2014 10 17 56947 0.1797 0.2456 -0.36111 2014 10 18 56948 0.1781 0.2443 -0.36222 2014 10 19 56949 0.1764 0.2431 -0.36341 2014 10 20 56950 0.1747 0.2419 -0.36469 2014 10 21 56951 0.1730 0.2407 -0.36602 2014 10 22 56952 0.1712 0.2395 -0.36739 2014 10 23 56953 0.1695 0.2384 -0.36877 2014 10 24 56954 0.1677 0.2373 -0.37012 2014 10 25 56955 0.1659 0.2362 -0.37142 2014 10 26 56956 0.1641 0.2352 -0.37265 2014 10 27 56957 0.1622 0.2342 -0.37381 2014 10 28 56958 0.1603 0.2332 -0.37494 2014 10 29 56959 0.1585 0.2322 -0.37609 2014 10 30 56960 0.1566 0.2313 -0.37732 2014 10 31 56961 0.1546 0.2304 -0.37866 2014 11 1 56962 0.1527 0.2295 -0.38014 2014 11 2 56963 0.1507 0.2286 -0.38177 2014 11 3 56964 0.1487 0.2278 -0.38349 2014 11 4 56965 0.1467 0.2270 -0.38526 2014 11 5 56966 0.1447 0.2262 -0.38698 2014 11 6 56967 0.1427 0.2255 -0.38859 2014 11 7 56968 0.1407 0.2248 -0.39005 2014 11 8 56969 0.1386 0.2241 -0.39134 2014 11 9 56970 0.1365 0.2235 -0.39249 2014 11 10 56971 0.1344 0.2229 -0.39354 2014 11 11 56972 0.1323 0.2223 -0.39454 2014 11 12 56973 0.1302 0.2217 -0.39553 2014 11 13 56974 0.1281 0.2212 -0.39655 2014 11 14 56975 0.1260 0.2207 -0.39763 2014 11 15 56976 0.1238 0.2203 -0.39877 2014 11 16 56977 0.1217 0.2199 -0.39998 2014 11 17 56978 0.1195 0.2195 -0.40124 2014 11 18 56979 0.1173 0.2191 -0.40255 2014 11 19 56980 0.1151 0.2188 -0.40386 2014 11 20 56981 0.1129 0.2185 -0.40516 2014 11 21 56982 0.1107 0.2183 -0.40641 2014 11 22 56983 0.1085 0.2180 -0.40760 2014 11 23 56984 0.1063 0.2179 -0.40872 2014 11 24 56985 0.1041 0.2177 -0.40978 2014 11 25 56986 0.1019 0.2176 -0.41085 2014 11 26 56987 0.0997 0.2175 -0.41195 2014 11 27 56988 0.0974 0.2174 -0.41316 2014 11 28 56989 0.0952 0.2174 -0.41449 2014 11 29 56990 0.0930 0.2174 -0.41594 2014 11 30 56991 0.0908 0.2175 -0.41747 2014 12 1 56992 0.0885 0.2176 -0.41904 2014 12 2 56993 0.0863 0.2177 -0.42058 2014 12 3 56994 0.0840 0.2179 -0.42203 2014 12 4 56995 0.0818 0.2180 -0.42334 2014 12 5 56996 0.0796 0.2183 -0.42451 2014 12 6 56997 0.0773 0.2185 -0.42554 2014 12 7 56998 0.0751 0.2188 -0.42647 2014 12 8 56999 0.0729 0.2191 -0.42734 2014 12 9 57000 0.0707 0.2195 -0.42822 2014 12 10 57001 0.0685 0.2199 -0.42912 2014 12 11 57002 0.0662 0.2203 -0.43008 2014 12 12 57003 0.0640 0.2208 -0.43112 2014 12 13 57004 0.0618 0.2213 -0.43224 2014 12 14 57005 0.0597 0.2218 -0.43344 2014 12 15 57006 0.0575 0.2224 -0.43468 2014 12 16 57007 0.0553 0.2230 -0.43595 2014 12 17 57008 0.0531 0.2236 -0.43722 2014 12 18 57009 0.0510 0.2243 -0.43845 2014 12 19 57010 0.0488 0.2250 -0.43962 2014 12 20 57011 0.0467 0.2257 -0.44071 2014 12 21 57012 0.0446 0.2265 -0.44173 2014 12 22 57013 0.0425 0.2273 -0.44271 2014 12 23 57014 0.0404 0.2282 -0.44370 2014 12 24 57015 0.0383 0.2290 -0.44477 2014 12 25 57016 0.0362 0.2299 -0.44595 2014 12 26 57017 0.0342 0.2309 -0.44727 2014 12 27 57018 0.0321 0.2318 -0.44870 2014 12 28 57019 0.0301 0.2328 -0.45016 2014 12 29 57020 0.0281 0.2339 -0.45160 2014 12 30 57021 0.0261 0.2349 -0.45295 2014 12 31 57022 0.0241 0.2360 -0.45416 2015 1 1 57023 0.0222 0.2371 -0.45523 2015 1 2 57024 0.0202 0.2383 -0.45615 2015 1 3 57025 0.0183 0.2395 -0.45696 2015 1 4 57026 0.0164 0.2407 -0.45769 2015 1 5 57027 0.0145 0.2420 -0.45839 2015 1 6 57028 0.0127 0.2432 -0.45908 2015 1 7 57029 0.0109 0.2445 -0.45979 2015 1 8 57030 0.0090 0.2459 -0.46054 2015 1 9 57031 0.0073 0.2472 -0.46134 2015 1 10 57032 0.0055 0.2486 -0.46219 2015 1 11 57033 0.0037 0.2501 -0.46308 2015 1 12 57034 0.0020 0.2515 -0.46398 2015 1 13 57035 0.0003 0.2530 -0.46484 2015 1 14 57036 -0.0013 0.2545 -0.46564 2015 1 15 57037 -0.0030 0.2560 -0.46640 2015 1 16 57038 -0.0046 0.2576 -0.46713 2015 1 17 57039 -0.0062 0.2592 -0.46789 2015 1 18 57040 -0.0077 0.2608 -0.46870 2015 1 19 57041 -0.0093 0.2624 -0.46960 2015 1 20 57042 -0.0108 0.2641 -0.47055 2015 1 21 57043 -0.0123 0.2658 -0.47159 2015 1 22 57044 -0.0137 0.2675 -0.47274 2015 1 23 57045 -0.0151 0.2692 -0.47405 2015 1 24 57046 -0.0165 0.2710 -0.47555 2015 1 25 57047 -0.0179 0.2728 -0.47710 2015 1 26 57048 -0.0192 0.2746 -0.47859 2015 1 27 57049 -0.0205 0.2764 -0.47996 2015 1 28 57050 -0.0217 0.2782 -0.48113 2015 1 29 57051 -0.0230 0.2801 -0.48213 2015 1 30 57052 -0.0242 0.2820 -0.48301 2015 1 31 57053 -0.0253 0.2839 -0.48374 2015 2 1 57054 -0.0265 0.2858 -0.48435 2015 2 2 57055 -0.0276 0.2878 -0.48496 2015 2 3 57056 -0.0286 0.2897 -0.48561 2015 2 4 57057 -0.0297 0.2917 -0.48635 2015 2 5 57058 -0.0307 0.2937 -0.48719 2015 2 6 57059 -0.0316 0.2958 -0.48815 2015 2 7 57060 -0.0325 0.2978 -0.48920 2015 2 8 57061 -0.0334 0.2998 -0.49025 2015 2 9 57062 -0.0343 0.3019 -0.49133 2015 2 10 57063 -0.0351 0.3040 -0.49240 2015 2 11 57064 -0.0359 0.3061 -0.49344 2015 2 12 57065 -0.0366 0.3082 -0.49444 2015 2 13 57066 -0.0373 0.3103 -0.49549 2015 2 14 57067 -0.0380 0.3124 -0.49652 2015 2 15 57068 -0.0386 0.3146 -0.49762 2015 2 16 57069 -0.0392 0.3168 -0.49880 2015 2 17 57070 -0.0398 0.3189 -0.50006 2015 2 18 57071 -0.0403 0.3211 -0.50149 2015 2 19 57072 -0.0408 0.3233 -0.50306 2015 2 20 57073 -0.0412 0.3255 -0.50477 2015 2 21 57074 -0.0416 0.3277 -0.50650 2015 2 22 57075 -0.0420 0.3299 -0.50825 2015 2 23 57076 -0.0423 0.3321 -0.50986 2015 2 24 57077 -0.0426 0.3344 -0.51131 2015 2 25 57078 -0.0428 0.3366 -0.51263 2015 2 26 57079 -0.0430 0.3388 -0.51382 2015 2 27 57080 -0.0432 0.3411 -0.51496 2015 2 28 57081 -0.0433 0.3433 -0.51613 2015 3 1 57082 -0.0434 0.3456 -0.51733 2015 3 2 57083 -0.0434 0.3479 -0.51856 2015 3 3 57084 -0.0434 0.3501 -0.51978 2015 3 4 57085 -0.0434 0.3524 -0.52102 2015 3 5 57086 -0.0433 0.3546 -0.52232 2015 3 6 57087 -0.0432 0.3569 -0.52369 2015 3 7 57088 -0.0430 0.3592 -0.52516 2015 3 8 57089 -0.0428 0.3614 -0.52665 2015 3 9 57090 -0.0426 0.3637 -0.52813 2015 3 10 57091 -0.0423 0.3660 -0.52953 2015 3 11 57092 -0.0420 0.3682 -0.53087 2015 3 12 57093 -0.0416 0.3705 -0.53216 2015 3 13 57094 -0.0412 0.3727 -0.53341 2015 3 14 57095 -0.0408 0.3750 -0.53465 2015 3 15 57096 -0.0403 0.3772 -0.53598 2015 3 16 57097 -0.0398 0.3795 -0.53743 2015 3 17 57098 -0.0392 0.3817 -0.53903 2015 3 18 57099 -0.0386 0.3839 -0.54083 2015 3 19 57100 -0.0380 0.3861 -0.54285 2015 3 20 57101 -0.0373 0.3884 -0.54500 2015 3 21 57102 -0.0366 0.3906 -0.54717 2015 3 22 57103 -0.0358 0.3928 -0.54924 2015 3 23 57104 -0.0350 0.3949 -0.55115 2015 3 24 57105 -0.0342 0.3971 -0.55288 2015 3 25 57106 -0.0333 0.3993 -0.55446 2015 3 26 57107 -0.0324 0.4014 -0.55590 2015 3 27 57108 -0.0314 0.4036 -0.55729 2015 3 28 57109 -0.0304 0.4057 -0.55865 2015 3 29 57110 -0.0294 0.4078 -0.56003 2015 3 30 57111 -0.0283 0.4099 -0.56143 2015 3 31 57112 -0.0272 0.4120 -0.56290 2015 4 1 57113 -0.0261 0.4140 -0.56441 2015 4 2 57114 -0.0249 0.4161 -0.56594 2015 4 3 57115 -0.0237 0.4181 -0.56750 2015 4 4 57116 -0.0224 0.4201 -0.56907 2015 4 5 57117 -0.0211 0.4221 -0.57066 2015 4 6 57118 -0.0198 0.4241 -0.57229 2015 4 7 57119 -0.0184 0.4261 -0.57388 2015 4 8 57120 -0.0170 0.4280 -0.57544 2015 4 9 57121 -0.0156 0.4300 -0.57694 2015 4 10 57122 -0.0141 0.4319 -0.57836 2015 4 11 57123 -0.0126 0.4338 -0.57976 2015 4 12 57124 -0.0111 0.4356 -0.58122 2015 4 13 57125 -0.0095 0.4375 -0.58277 2015 4 14 57126 -0.0079 0.4393 -0.58446 2015 4 15 57127 -0.0063 0.4411 -0.58637 2015 4 16 57128 -0.0046 0.4428 -0.58845 2015 4 17 57129 -0.0029 0.4446 -0.59059 2015 4 18 57130 -0.0012 0.4463 -0.59272 2015 4 19 57131 0.0006 0.4480 -0.59476 2015 4 20 57132 0.0024 0.4497 -0.59667 2015 4 21 57133 0.0042 0.4513 -0.59843 2015 4 22 57134 0.0061 0.4529 -0.60001 2015 4 23 57135 0.0080 0.4545 -0.60148 2015 4 24 57136 0.0099 0.4561 -0.60287 2015 4 25 57137 0.0118 0.4576 -0.60426 2015 4 26 57138 0.0138 0.4591 -0.60567 2015 4 27 57139 0.0158 0.4606 -0.60709 2015 4 28 57140 0.0178 0.4621 -0.60855 2015 4 29 57141 0.0199 0.4635 -0.61004 2015 4 30 57142 0.0219 0.4649 -0.61153 2015 5 1 57143 0.0240 0.4663 -0.61302 2015 5 2 57144 0.0262 0.4676 -0.61446 2015 5 3 57145 0.0283 0.4689 -0.61586 2015 5 4 57146 0.0305 0.4701 -0.61718 2015 5 5 57147 0.0327 0.4714 -0.61844 2015 5 6 57148 0.0349 0.4726 -0.61965 2015 5 7 57149 0.0372 0.4737 -0.62084 2015 5 8 57150 0.0394 0.4749 -0.62203 2015 5 9 57151 0.0417 0.4760 -0.62327 2015 5 10 57152 0.0440 0.4771 -0.62455 2015 5 11 57153 0.0463 0.4781 -0.62595 2015 5 12 57154 0.0487 0.4791 -0.62744 2015 5 13 57155 0.0511 0.4800 -0.62902 2015 5 14 57156 0.0534 0.4810 -0.63067 2015 5 15 57157 0.0558 0.4819 -0.63234 2015 5 16 57158 0.0582 0.4827 -0.63395 2015 5 17 57159 0.0607 0.4835 -0.63539 2015 5 18 57160 0.0631 0.4843 -0.63661 2015 5 19 57161 0.0656 0.4851 -0.63763 2015 5 20 57162 0.0681 0.4858 -0.63845 2015 5 21 57163 0.0706 0.4865 -0.63915 2015 5 22 57164 0.0731 0.4871 -0.63980 2015 5 23 57165 0.0756 0.4877 -0.64043 2015 5 24 57166 0.0781 0.4883 -0.64109 2015 5 25 57167 0.0806 0.4888 -0.64182 2015 5 26 57168 0.0832 0.4893 -0.64261 2015 5 27 57169 0.0857 0.4897 -0.64348 2015 5 28 57170 0.0883 0.4901 -0.64442 2015 5 29 57171 0.0909 0.4905 -0.64538 2015 5 30 57172 0.0935 0.4908 -0.64636 2015 5 31 57173 0.0960 0.4911 -0.64732 2015 6 1 57174 0.0986 0.4914 -0.64825 2015 6 2 57175 0.1012 0.4916 -0.64914 2015 6 3 57176 0.1038 0.4918 -0.64995 2015 6 4 57177 0.1064 0.4919 -0.65073 2015 6 5 57178 0.1090 0.4920 -0.65149 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) 56778 -78.95 0.30 -13.88 0.08 56779 -78.82 0.30 -13.77 0.08 56780 -78.83 0.30 -13.70 0.13 56781 -78.92 0.15 -13.78 0.04 56782 -78.96 0.15 -13.98 0.04 56783 -78.90 0.12 -14.17 0.04 56784 -78.82 0.12 -14.26 0.04 56785 -78.83 0.12 -14.25 0.04 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 56749 -79.9 -13.1 56750 -79.8 -13.0 56751 -79.5 -13.0 56752 -79.4 -13.0 56753 -79.4 -13.1 56754 -79.3 -13.3 56755 -79.0 -13.4 56756 -78.6 -13.5 56757 -78.4 -13.5 56758 -78.4 -13.5 56759 -78.6 -13.5 56760 -78.8 -13.6 56761 -78.8 -13.5 56762 -79.0 -13.5 56763 -79.4 -13.5 56764 -79.5 -13.6 56765 -79.5 -13.8 56766 -79.4 -13.9 56767 -79.4 -14.0 56768 -79.4 -13.9 56769 -79.4 -13.9 56770 -78.8 -13.9 56771 -78.7 -13.8 56772 -78.7 -13.6 56773 -78.7 -13.4 56774 -78.8 -13.3 56775 -79.1 -13.5 56776 -79.3 -13.7 56777 -79.0 -13.9 56778 -79.7 -13.8 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 56778 0.327 0.119 -0.112 0.080 56779 0.348 0.119 -0.136 0.080 56780 0.356 0.119 -0.150 0.130 56781 0.351 0.060 -0.157 0.040 56782 0.341 0.060 -0.164 0.040 56783 0.325 0.048 -0.169 0.040 56784 0.289 0.048 -0.183 0.040 56785 0.234 0.048 -0.192 0.040 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 56749 0.15 0.05 56750 0.19 0.13 56751 0.29 0.03 56752 0.35 0.01 56753 0.39 0.02 56754 0.42 -0.01 56755 0.45 0.02 56756 0.45 -0.03 56757 0.41 -0.05 56758 0.40 -0.07 56759 0.37 -0.06 56760 0.36 -0.16 56761 0.40 -0.10 56762 0.35 -0.17 56763 0.21 -0.16 56764 0.17 -0.14 56765 0.14 -0.14 56766 0.15 -0.09 56767 0.16 -0.16 56768 0.20 -0.09 56769 0.23 -0.11 56770 0.43 -0.11 56771 0.37 -0.08 56772 0.27 -0.06 56773 0.25 -0.07 56774 0.27 -0.04 56775 0.25 -0.11 56776 0.24 -0.07 56777 0.35 -0.11 56778 0.03 -0.03 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).