********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 8 March 2007 Vol. XX 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 = -0.1 seconds beginning 15 March 2007 at 0000 UTC Beginning 1 January 2006: TAI-UTC(BIPM) = 33.000 000 seconds ********************************************************************** * As of Bulletin A Vol. XX, No. 010, on 08 March 2007, we have * * incorporated the new USNO VLBI solutions usno2007a and int2007a. * * The effect appears to be less than 0.10 mas in polar motion and * * 10 us in UT1-UTC. * ********************************************************************** ________________________________________________________________________ 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 7 3 2 54161 -.01311 .00010 .44523 .00011 -.031309 .000009 7 3 3 54162 -.01273 .00010 .44710 .00011 -.032253 .000008 7 3 4 54163 -.01228 .00009 .44855 .00010 -.033339 .000007 7 3 5 54164 -.01164 .00009 .44981 .00010 -.034539 .000008 7 3 6 54165 -.01112 .00010 .45097 .00010 -.035785 .000008 7 3 7 54166 -.01054 .00010 .45208 .00010 -.037004 .000048 7 3 8 54167 -.00979 .00009 .45354 .00010 -.038150 .000057 IERS Final Values MJD x y UT1-UTC " " s 7 1 5 54105 -.0545 .3524 .03526 7 1 6 54106 -.0559 .3539 .03447 7 1 7 54107 -.0567 .3553 .03349 7 1 8 54108 -.0571 .3569 .03234 7 1 9 54109 -.0575 .3588 .03107 7 1 10 54110 -.0581 .3610 .02972 7 1 11 54111 -.0589 .3628 .02834 7 1 12 54112 -.0591 .3644 .02707 7 1 13 54113 -.0587 .3662 .02583 7 1 14 54114 -.0583 .3679 .02480 7 1 15 54115 -.0580 .3694 .02386 7 1 16 54116 -.0574 .3712 .02302 7 1 17 54117 -.0569 .3730 .02220 7 1 18 54118 -.0565 .3747 .02140 7 1 19 54119 -.0559 .3770 .02045 7 1 20 54120 -.0557 .3795 .01922 7 1 21 54121 -.0556 .3815 .01768 7 1 22 54122 -.0554 .3831 .01585 7 1 23 54123 -.0550 .3848 .01381 7 1 24 54124 -.0548 .3867 .01168 7 1 25 54125 -.0546 .3886 .00963 7 1 26 54126 -.0543 .3903 .00779 7 1 27 54127 -.0537 .3919 .00621 7 1 28 54128 -.0529 .3936 .00490 7 1 29 54129 -.0519 .3955 .00383 7 1 30 54130 -.0509 .3975 .00283 7 1 31 54131 -.0502 .3993 .00183 7 2 1 54132 -.0498 .4008 .00073 7 2 2 54133 -.0491 .4019 -.00053 7 2 3 54134 -.0478 .4028 -.00195 _______________________________________________________________________ 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 = .0539 - .0831 cos A + .0009 sin A + .0180 cos C + .1085 sin C y = .3451 + .0007 cos A + .0727 sin A + .1085 cos C - .0180 sin C UT1-UTC = -.0335 - .00096 (MJD - 54172) - (UT2-UT1) where A = 2*pi*(MJD-54167)/365.25 and C = 2*pi*(MJD-54167)/435. TAI-UTC(MJD 54168) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-54167)**0.80 S t = 0.00025 (MJD-54167)**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) 2007 3 9 54168 -0.0090 0.4551 -0.03912 2007 3 10 54169 -0.0080 0.4565 -0.03988 2007 3 11 54170 -0.0070 0.4579 -0.04044 2007 3 12 54171 -0.0058 0.4591 -0.04088 2007 3 13 54172 -0.0045 0.4603 -0.04131 2007 3 14 54173 -0.0032 0.4614 -0.04182 2007 3 15 54174 -0.0018 0.4624 -0.04250 2007 3 16 54175 -0.0003 0.4634 -0.04346 2007 3 17 54176 0.0012 0.4643 -0.04475 2007 3 18 54177 0.0028 0.4651 -0.04638 2007 3 19 54178 0.0045 0.4659 -0.04827 2007 3 20 54179 0.0062 0.4667 -0.05027 2007 3 21 54180 0.0080 0.4674 -0.05219 2007 3 22 54181 0.0097 0.4681 -0.05388 2007 3 23 54182 0.0116 0.4687 -0.05527 2007 3 24 54183 0.0134 0.4694 -0.05642 2007 3 25 54184 0.0153 0.4699 -0.05743 2007 3 26 54185 0.0172 0.4705 -0.05844 2007 3 27 54186 0.0192 0.4710 -0.05955 2007 3 28 54187 0.0211 0.4715 -0.06084 2007 3 29 54188 0.0231 0.4719 -0.06234 2007 3 30 54189 0.0251 0.4723 -0.06403 2007 3 31 54190 0.0271 0.4727 -0.06588 2007 4 1 54191 0.0292 0.4731 -0.06783 2007 4 2 54192 0.0312 0.4734 -0.06981 2007 4 3 54193 0.0333 0.4737 -0.07175 2007 4 4 54194 0.0353 0.4740 -0.07357 2007 4 5 54195 0.0374 0.4742 -0.07524 2007 4 6 54196 0.0395 0.4744 -0.07673 2007 4 7 54197 0.0416 0.4746 -0.07804 2007 4 8 54198 0.0437 0.4748 -0.07920 2007 4 9 54199 0.0458 0.4749 -0.08027 2007 4 10 54200 0.0479 0.4750 -0.08135 2007 4 11 54201 0.0501 0.4751 -0.08254 2007 4 12 54202 0.0522 0.4751 -0.08394 2007 4 13 54203 0.0543 0.4751 -0.08562 2007 4 14 54204 0.0565 0.4751 -0.08762 2007 4 15 54205 0.0586 0.4750 -0.08988 2007 4 16 54206 0.0607 0.4749 -0.09225 2007 4 17 54207 0.0629 0.4748 -0.09455 2007 4 18 54208 0.0650 0.4746 -0.09661 2007 4 19 54209 0.0672 0.4745 -0.09833 2007 4 20 54210 0.0693 0.4743 -0.09969 2007 4 21 54211 0.0715 0.4740 -0.10080 2007 4 22 54212 0.0736 0.4737 -0.10179 2007 4 23 54213 0.0758 0.4734 -0.10279 2007 4 24 54214 0.0779 0.4731 -0.10390 2007 4 25 54215 0.0800 0.4727 -0.10517 2007 4 26 54216 0.0822 0.4723 -0.10659 2007 4 27 54217 0.0843 0.4718 -0.10813 2007 4 28 54218 0.0865 0.4714 -0.10974 2007 4 29 54219 0.0886 0.4709 -0.11137 2007 4 30 54220 0.0907 0.4703 -0.11293 2007 5 1 54221 0.0928 0.4697 -0.11438 2007 5 2 54222 0.0950 0.4691 -0.11567 2007 5 3 54223 0.0971 0.4685 -0.11675 2007 5 4 54224 0.0992 0.4678 -0.11764 2007 5 5 54225 0.1013 0.4671 -0.11836 2007 5 6 54226 0.1034 0.4664 -0.11898 2007 5 7 54227 0.1055 0.4656 -0.11957 2007 5 8 54228 0.1076 0.4648 -0.12023 2007 5 9 54229 0.1096 0.4639 -0.12104 2007 5 10 54230 0.1117 0.4631 -0.12209 2007 5 11 54231 0.1138 0.4622 -0.12341 2007 5 12 54232 0.1158 0.4612 -0.12498 2007 5 13 54233 0.1179 0.4603 -0.12672 2007 5 14 54234 0.1199 0.4592 -0.12847 2007 5 15 54235 0.1219 0.4582 -0.13007 2007 5 16 54236 0.1239 0.4571 -0.13138 2007 5 17 54237 0.1259 0.4560 -0.13234 2007 5 18 54238 0.1279 0.4549 -0.13300 2007 5 19 54239 0.1299 0.4537 -0.13347 2007 5 20 54240 0.1318 0.4525 -0.13391 2007 5 21 54241 0.1338 0.4513 -0.13443 2007 5 22 54242 0.1357 0.4501 -0.13510 2007 5 23 54243 0.1377 0.4488 -0.13595 2007 5 24 54244 0.1396 0.4475 -0.13693 2007 5 25 54245 0.1415 0.4461 -0.13800 2007 5 26 54246 0.1433 0.4448 -0.13909 2007 5 27 54247 0.1452 0.4434 -0.14014 2007 5 28 54248 0.1470 0.4420 -0.14108 2007 5 29 54249 0.1489 0.4405 -0.14186 2007 5 30 54250 0.1507 0.4390 -0.14246 2007 5 31 54251 0.1525 0.4375 -0.14286 2007 6 1 54252 0.1543 0.4360 -0.14309 2007 6 2 54253 0.1562 0.4344 -0.14320 2007 6 3 54254 0.1579 0.4328 -0.14327 2007 6 4 54255 0.1596 0.4312 -0.14338 2007 6 5 54256 0.1613 0.4295 -0.14364 2007 6 6 54257 0.1630 0.4279 -0.14410 2007 6 7 54258 0.1646 0.4262 -0.14481 2007 6 8 54259 0.1662 0.4245 -0.14576 2007 6 9 54260 0.1678 0.4227 -0.14687 2007 6 10 54261 0.1694 0.4209 -0.14802 2007 6 11 54262 0.1710 0.4191 -0.14908 2007 6 12 54263 0.1725 0.4173 -0.14991 2007 6 13 54264 0.1740 0.4155 -0.15043 2007 6 14 54265 0.1755 0.4136 -0.15065 2007 6 15 54266 0.1770 0.4118 -0.15065 2007 6 16 54267 0.1784 0.4099 -0.15056 2007 6 17 54268 0.1798 0.4079 -0.15051 2007 6 18 54269 0.1812 0.4060 -0.15061 2007 6 19 54270 0.1826 0.4040 -0.15089 2007 6 20 54271 0.1839 0.4021 -0.15132 2007 6 21 54272 0.1852 0.4001 -0.15187 2007 6 22 54273 0.1865 0.3981 -0.15246 2007 6 23 54274 0.1877 0.3960 -0.15302 2007 6 24 54275 0.1890 0.3940 -0.15349 2007 6 25 54276 0.1902 0.3919 -0.15383 2007 6 26 54277 0.1913 0.3898 -0.15398 2007 6 27 54278 0.1924 0.3877 -0.15395 2007 6 28 54279 0.1935 0.3856 -0.15376 2007 6 29 54280 0.1946 0.3835 -0.15343 2007 6 30 54281 0.1957 0.3814 -0.15306 2007 7 1 54282 0.1967 0.3792 -0.15272 2007 7 2 54283 0.1976 0.3771 -0.15252 2007 7 3 54284 0.1986 0.3749 -0.15254 2007 7 4 54285 0.1995 0.3727 -0.15282 2007 7 5 54286 0.2004 0.3705 -0.15334 2007 7 6 54287 0.2012 0.3683 -0.15404 2007 7 7 54288 0.2020 0.3661 -0.15481 2007 7 8 54289 0.2028 0.3639 -0.15552 2007 7 9 54290 0.2035 0.3616 -0.15602 2007 7 10 54291 0.2042 0.3594 -0.15626 2007 7 11 54292 0.2049 0.3572 -0.15622 2007 7 12 54293 0.2055 0.3549 -0.15595 2007 7 13 54294 0.2061 0.3526 -0.15558 2007 7 14 54295 0.2067 0.3504 -0.15522 2007 7 15 54296 0.2072 0.3481 -0.15499 2007 7 16 54297 0.2077 0.3458 -0.15496 2007 7 17 54298 0.2081 0.3436 -0.15512 2007 7 18 54299 0.2086 0.3413 -0.15543 2007 7 19 54300 0.2089 0.3390 -0.15582 2007 7 20 54301 0.2093 0.3367 -0.15621 2007 7 21 54302 0.2096 0.3344 -0.15654 2007 7 22 54303 0.2098 0.3322 -0.15675 2007 7 23 54304 0.2101 0.3299 -0.15680 2007 7 24 54305 0.2103 0.3276 -0.15668 2007 7 25 54306 0.2104 0.3253 -0.15638 2007 7 26 54307 0.2105 0.3230 -0.15596 2007 7 27 54308 0.2106 0.3207 -0.15548 2007 7 28 54309 0.2106 0.3185 -0.15501 2007 7 29 54310 0.2106 0.3162 -0.15467 2007 7 30 54311 0.2106 0.3139 -0.15455 2007 7 31 54312 0.2105 0.3117 -0.15471 2007 8 1 54313 0.2104 0.3094 -0.15516 2007 8 2 54314 0.2102 0.3072 -0.15583 2007 8 3 54315 0.2100 0.3049 -0.15662 2007 8 4 54316 0.2098 0.3027 -0.15737 2007 8 5 54317 0.2095 0.3004 -0.15794 2007 8 6 54318 0.2092 0.2982 -0.15825 2007 8 7 54319 0.2088 0.2960 -0.15829 2007 8 8 54320 0.2084 0.2938 -0.15810 2007 8 9 54321 0.2080 0.2916 -0.15779 2007 8 10 54322 0.2075 0.2894 -0.15749 2007 8 11 54323 0.2070 0.2872 -0.15729 2007 8 12 54324 0.2064 0.2851 -0.15729 2007 8 13 54325 0.2058 0.2829 -0.15751 2007 8 14 54326 0.2052 0.2808 -0.15791 2007 8 15 54327 0.2045 0.2786 -0.15844 2007 8 16 54328 0.2038 0.2765 -0.15902 2007 8 17 54329 0.2030 0.2744 -0.15956 2007 8 18 54330 0.2022 0.2723 -0.16001 2007 8 19 54331 0.2014 0.2702 -0.16032 2007 8 20 54332 0.2005 0.2682 -0.16046 2007 8 21 54333 0.1996 0.2661 -0.16043 2007 8 22 54334 0.1987 0.2641 -0.16028 2007 8 23 54335 0.1977 0.2621 -0.16004 2007 8 24 54336 0.1967 0.2601 -0.15979 2007 8 25 54337 0.1956 0.2581 -0.15963 2007 8 26 54338 0.1945 0.2561 -0.15966 2007 8 27 54339 0.1934 0.2542 -0.15996 2007 8 28 54340 0.1922 0.2523 -0.16058 2007 8 29 54341 0.1910 0.2504 -0.16147 2007 8 30 54342 0.1897 0.2485 -0.16253 2007 8 31 54343 0.1885 0.2466 -0.16360 2007 9 1 54344 0.1871 0.2448 -0.16451 2007 9 2 54345 0.1858 0.2429 -0.16514 2007 9 3 54346 0.1844 0.2411 -0.16546 2007 9 4 54347 0.1830 0.2394 -0.16551 2007 9 5 54348 0.1815 0.2376 -0.16540 2007 9 6 54349 0.1800 0.2358 -0.16527 2007 9 7 54350 0.1785 0.2341 -0.16526 2007 9 8 54351 0.1769 0.2324 -0.16545 2007 9 9 54352 0.1753 0.2308 -0.16589 2007 9 10 54353 0.1737 0.2291 -0.16656 2007 9 11 54354 0.1720 0.2275 -0.16741 2007 9 12 54355 0.1704 0.2259 -0.16835 2007 9 13 54356 0.1686 0.2243 -0.16929 2007 9 14 54357 0.1669 0.2228 -0.17016 2007 9 15 54358 0.1651 0.2213 -0.17091 2007 9 16 54359 0.1632 0.2198 -0.17150 2007 9 17 54360 0.1614 0.2183 -0.17193 2007 9 18 54361 0.1595 0.2169 -0.17222 2007 9 19 54362 0.1575 0.2155 -0.17243 2007 9 20 54363 0.1556 0.2142 -0.17263 2007 9 21 54364 0.1536 0.2128 -0.17289 2007 9 22 54365 0.1516 0.2115 -0.17332 2007 9 23 54366 0.1495 0.2102 -0.17401 2007 9 24 54367 0.1475 0.2090 -0.17502 2007 9 25 54368 0.1454 0.2078 -0.17637 2007 9 26 54369 0.1433 0.2066 -0.17798 2007 9 27 54370 0.1411 0.2054 -0.17972 2007 9 28 54371 0.1390 0.2043 -0.18140 2007 9 29 54372 0.1368 0.2031 -0.18286 2007 9 30 54373 0.1346 0.2021 -0.18402 2007 10 1 54374 0.1323 0.2010 -0.18486 2007 10 2 54375 0.1301 0.2000 -0.18548 2007 10 3 54376 0.1278 0.1990 -0.18602 2007 10 4 54377 0.1255 0.1980 -0.18662 2007 10 5 54378 0.1232 0.1971 -0.18737 2007 10 6 54379 0.1208 0.1962 -0.18833 2007 10 7 54380 0.1185 0.1953 -0.18950 2007 10 8 54381 0.1161 0.1945 -0.19085 2007 10 9 54382 0.1137 0.1937 -0.19235 2007 10 10 54383 0.1113 0.1929 -0.19389 2007 10 11 54384 0.1089 0.1922 -0.19536 2007 10 12 54385 0.1064 0.1915 -0.19667 2007 10 13 54386 0.1040 0.1908 -0.19785 2007 10 14 54387 0.1015 0.1902 -0.19883 2007 10 15 54388 0.0990 0.1896 -0.19961 2007 10 16 54389 0.0965 0.1890 -0.20024 2007 10 17 54390 0.0940 0.1884 -0.20080 2007 10 18 54391 0.0914 0.1879 -0.20142 2007 10 19 54392 0.0889 0.1874 -0.20219 2007 10 20 54393 0.0864 0.1870 -0.20318 2007 10 21 54394 0.0838 0.1866 -0.20446 2007 10 22 54395 0.0812 0.1862 -0.20605 2007 10 23 54396 0.0787 0.1859 -0.20797 2007 10 24 54397 0.0761 0.1856 -0.21016 2007 10 25 54398 0.0735 0.1853 -0.21243 2007 10 26 54399 0.0709 0.1851 -0.21457 2007 10 27 54400 0.0683 0.1849 -0.21642 2007 10 28 54401 0.0657 0.1847 -0.21789 2007 10 29 54402 0.0630 0.1845 -0.21908 2007 10 30 54403 0.0604 0.1844 -0.22010 2007 10 31 54404 0.0578 0.1844 -0.22106 2007 11 1 54405 0.0552 0.1843 -0.22208 2007 11 2 54406 0.0525 0.1843 -0.22326 2007 11 3 54407 0.0499 0.1844 -0.22472 2007 11 4 54408 0.0473 0.1845 -0.22640 2007 11 5 54409 0.0447 0.1846 -0.22824 2007 11 6 54410 0.0420 0.1847 -0.23013 2007 11 7 54411 0.0394 0.1849 -0.23209 2007 11 8 54412 0.0368 0.1851 -0.23394 2007 11 9 54413 0.0342 0.1853 -0.23567 2007 11 10 54414 0.0315 0.1856 -0.23721 2007 11 11 54415 0.0289 0.1860 -0.23852 2007 11 12 54416 0.0263 0.1863 -0.23967 2007 11 13 54417 0.0237 0.1867 -0.24072 2007 11 14 54418 0.0211 0.1871 -0.24171 2007 11 15 54419 0.0185 0.1876 -0.24272 2007 11 16 54420 0.0159 0.1881 -0.24382 2007 11 17 54421 0.0134 0.1886 -0.24508 2007 11 18 54422 0.0108 0.1892 -0.24656 2007 11 19 54423 0.0082 0.1898 -0.24822 2007 11 20 54424 0.0057 0.1904 -0.25005 2007 11 21 54425 0.0031 0.1911 -0.25197 2007 11 22 54426 0.0006 0.1918 -0.25375 2007 11 23 54427 -0.0019 0.1925 -0.25525 2007 11 24 54428 -0.0044 0.1933 -0.25635 2007 11 25 54429 -0.0069 0.1941 -0.25712 2007 11 26 54430 -0.0094 0.1950 -0.25764 2007 11 27 54431 -0.0118 0.1959 -0.25806 2007 11 28 54432 -0.0143 0.1968 -0.25850 2007 11 29 54433 -0.0167 0.1977 -0.25905 2007 11 30 54434 -0.0191 0.1987 -0.25978 2007 12 1 54435 -0.0215 0.1997 -0.26068 2007 12 2 54436 -0.0239 0.2008 -0.26164 2007 12 3 54437 -0.0262 0.2019 -0.26259 2007 12 4 54438 -0.0286 0.2030 -0.26352 2007 12 5 54439 -0.0309 0.2042 -0.26439 2007 12 6 54440 -0.0332 0.2053 -0.26516 2007 12 7 54441 -0.0355 0.2066 -0.26580 2007 12 8 54442 -0.0378 0.2078 -0.26629 2007 12 9 54443 -0.0400 0.2091 -0.26663 2007 12 10 54444 -0.0422 0.2104 -0.26692 2007 12 11 54445 -0.0444 0.2118 -0.26722 2007 12 12 54446 -0.0466 0.2132 -0.26759 2007 12 13 54447 -0.0487 0.2146 -0.26807 2007 12 14 54448 -0.0509 0.2161 -0.26872 2007 12 15 54449 -0.0530 0.2175 -0.26964 2007 12 16 54450 -0.0550 0.2191 -0.27076 2007 12 17 54451 -0.0571 0.2206 -0.27209 2007 12 18 54452 -0.0591 0.2222 -0.27358 2007 12 19 54453 -0.0611 0.2238 -0.27512 2007 12 20 54454 -0.0631 0.2254 -0.27656 2007 12 21 54455 -0.0650 0.2271 -0.27768 2007 12 22 54456 -0.0669 0.2288 -0.27848 2007 12 23 54457 -0.0688 0.2306 -0.27902 2007 12 24 54458 -0.0707 0.2323 -0.27945 2007 12 25 54459 -0.0725 0.2341 -0.27996 2007 12 26 54460 -0.0743 0.2359 -0.28068 2007 12 27 54461 -0.0760 0.2378 -0.28164 2007 12 28 54462 -0.0778 0.2397 -0.28283 2007 12 29 54463 -0.0795 0.2416 -0.28424 2007 12 30 54464 -0.0812 0.2435 -0.28574 2007 12 31 54465 -0.0828 0.2455 -0.28717 2008 1 1 54466 -0.0844 0.2474 -0.28851 2008 1 2 54467 -0.0860 0.2495 -0.28965 2008 1 3 54468 -0.0875 0.2515 -0.29056 2008 1 4 54469 -0.0890 0.2536 -0.29120 2008 1 5 54470 -0.0905 0.2557 -0.29164 2008 1 6 54471 -0.0919 0.2578 -0.29192 2008 1 7 54472 -0.0933 0.2599 -0.29213 2008 1 8 54473 -0.0947 0.2621 -0.29243 2008 1 9 54474 -0.0960 0.2643 -0.29283 2008 1 10 54475 -0.0973 0.2665 -0.29346 2008 1 11 54476 -0.0986 0.2687 -0.29433 2008 1 12 54477 -0.0998 0.2710 -0.29543 2008 1 13 54478 -0.1010 0.2732 -0.29664 2008 1 14 54479 -0.1022 0.2755 -0.29789 2008 1 15 54480 -0.1033 0.2779 -0.29916 2008 1 16 54481 -0.1044 0.2802 -0.30033 2008 1 17 54482 -0.1054 0.2826 -0.30122 2008 1 18 54483 -0.1064 0.2849 -0.30176 2008 1 19 54484 -0.1074 0.2873 -0.30199 2008 1 20 54485 -0.1083 0.2897 -0.30206 2008 1 21 54486 -0.1092 0.2922 -0.30212 2008 1 22 54487 -0.1100 0.2946 -0.30227 2008 1 23 54488 -0.1109 0.2971 -0.30261 2008 1 24 54489 -0.1116 0.2996 -0.30317 2008 1 25 54490 -0.1124 0.3021 -0.30393 2008 1 26 54491 -0.1130 0.3046 -0.30476 2008 1 27 54492 -0.1137 0.3071 -0.30554 2008 1 28 54493 -0.1143 0.3097 -0.30618 2008 1 29 54494 -0.1149 0.3122 -0.30665 2008 1 30 54495 -0.1154 0.3148 -0.30696 2008 1 31 54496 -0.1159 0.3174 -0.30710 2008 2 1 54497 -0.1163 0.3199 -0.30706 2008 2 2 54498 -0.1168 0.3225 -0.30691 2008 2 3 54499 -0.1171 0.3251 -0.30674 2008 2 4 54500 -0.1174 0.3278 -0.30667 2008 2 5 54501 -0.1177 0.3304 -0.30667 2008 2 6 54502 -0.1180 0.3330 -0.30682 2008 2 7 54503 -0.1182 0.3357 -0.30725 2008 2 8 54504 -0.1183 0.3383 -0.30797 2008 2 9 54505 -0.1185 0.3410 -0.30895 2008 2 10 54506 -0.1185 0.3436 -0.31007 2008 2 11 54507 -0.1186 0.3463 -0.31127 2008 2 12 54508 -0.1186 0.3490 -0.31239 2008 2 13 54509 -0.1185 0.3516 -0.31336 2008 2 14 54510 -0.1184 0.3543 -0.31407 2008 2 15 54511 -0.1183 0.3570 -0.31456 2008 2 16 54512 -0.1181 0.3596 -0.31484 2008 2 17 54513 -0.1179 0.3623 -0.31504 2008 2 18 54514 -0.1176 0.3650 -0.31534 2008 2 19 54515 -0.1173 0.3677 -0.31582 2008 2 20 54516 -0.1170 0.3703 -0.31647 2008 2 21 54517 -0.1166 0.3730 -0.31730 2008 2 22 54518 -0.1162 0.3757 -0.31826 2008 2 23 54519 -0.1157 0.3783 -0.31920 2008 2 24 54520 -0.1152 0.3810 -0.32006 2008 2 25 54521 -0.1147 0.3836 -0.32078 2008 2 26 54522 -0.1141 0.3863 -0.32129 2008 2 27 54523 -0.1134 0.3889 -0.32153 2008 2 28 54524 -0.1128 0.3915 -0.32159 2008 2 29 54525 -0.1121 0.3942 -0.32154 2008 3 1 54526 -0.1113 0.3968 -0.32141 2008 3 2 54527 -0.1105 0.3994 -0.32126 2008 3 3 54528 -0.1097 0.4020 -0.32117 2008 3 4 54529 -0.1088 0.4046 -0.32124 2008 3 5 54530 -0.1079 0.4071 -0.32161 2008 3 6 54531 -0.1069 0.4097 -0.32235 2008 3 7 54532 -0.1059 0.4122 -0.32346 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) 54148 -57.53 .74 -4.07 .34 54149 -57.14 .74 -3.83 .34 54150 -57.01 .74 -3.52 .34 54151 -57.31 .74 -3.41 .34 54152 -57.84 .24 -3.53 .20 54153 -58.28 .24 -3.76 .20 54154 -58.48 .24 -3.98 .20 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 54105 -57.5 -2.4 54106 -57.2 -2.3 54107 -57.1 -2.3 54108 -57.0 -2.2 54109 -57.0 -2.1 54110 -57.1 -2.1 54111 -57.2 -2.0 54112 -57.3 -2.1 54113 -57.5 -2.2 54114 -57.6 -2.4 54115 -57.6 -2.7 54116 -57.6 -2.8 54117 -57.6 -2.9 54118 -57.6 -2.8 54119 -57.5 -2.7 54120 -57.5 -2.6 54121 -57.5 -2.5 54122 -57.5 -2.5 54123 -57.7 -2.5 54124 -58.0 -2.5 54125 -58.3 -2.5 54126 -58.5 -2.6 54127 -58.7 -2.7 54128 -58.7 -2.8 54129 -58.5 -3.0 54130 -58.0 -3.0 54131 -57.6 -3.1 54132 -57.3 -3.1 54133 -57.1 -3.0 54134 -57.0 -2.8 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 54148 0.218 0.294 -0.245 0.340 54149 0.200 0.294 -0.260 0.340 54150 0.179 0.294 -0.297 0.340 54151 0.170 0.294 -0.335 0.340 54152 0.168 0.095 -0.333 0.200 54153 0.170 0.095 -0.328 0.200 54154 0.174 0.095 -0.331 0.200 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 54105 0.10 -0.24 54106 0.14 -0.37 54107 0.13 -0.55 54108 0.17 -0.50 54109 0.22 -0.33 54110 0.26 -0.25 54111 0.31 -0.14 54112 0.35 -0.23 54113 0.33 -0.24 54114 0.33 -0.24 54115 0.33 -0.31 54116 0.32 -0.26 54117 0.34 -0.32 54118 0.38 -0.22 54119 0.41 -0.14 54120 0.33 -0.14 54121 0.23 -0.19 54122 0.20 -0.31 54123 0.21 -0.32 54124 0.24 -0.24 54125 0.26 -0.15 54126 0.26 -0.22 54127 0.20 -0.32 54128 0.18 -0.40 54129 0.18 -0.51 54130 0.23 -0.34 54131 0.20 -0.26 54132 0.17 -0.19 54133 0.16 -0.19 54134 0.16 -0.23 The IERS Conventions recommended software to predict celestial pole offsets is available at ftp://maia.usno.navy.mil/conventions/chapter5/ ceppred.f and software for the calculation of the dX and dY with respect to IAU2000A Nutation/Precession Theory can be found at the web site in section chapter 5.