********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 21 June 2007 Vol. XX No. 025 ______________________________________________________________________ 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 14 June 2007 at 0000 UTC Beginning 1 January 2006: TAI-UTC(BIPM) = 33.000 000 seconds ________________________________________________________________________ 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 6 15 54266 .17657 .00009 .43916 .00009 -.152382 .000012 7 6 16 54267 .17833 .00009 .43718 .00009 -.152304 .000011 7 6 17 54268 .18026 .00009 .43536 .00009 -.152305 .000011 7 6 18 54269 .18242 .00009 .43365 .00010 -.152498 .000010 7 6 19 54270 .18473 .00009 .43203 .00010 -.152881 .000008 7 6 20 54271 .18705 .00009 .43058 .00010 -.153466 .000048 7 6 21 54272 .18936 .00050 .42918 .00054 -.154246 .000057 _______________________________________________________________________ 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 = .0630 - .0084 cos A + .0866 sin A + .1348 cos C + .0011 sin C y = .3481 + .0794 cos A + .0050 sin A + .0011 cos C - .1348 sin C UT1-UTC = -.1307 - .00097 (MJD - 54277) - (UT2-UT1) where A = 2*pi*(MJD-54272)/365.25 and C = 2*pi*(MJD-54272)/435. TAI-UTC(MJD 54273) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-54272)**0.80 S t = 0.00025 (MJD-54272)**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 6 22 54273 0.1911 0.4276 -0.15508 2007 6 23 54274 0.1929 0.4260 -0.15585 2007 6 24 54275 0.1945 0.4242 -0.15648 2007 6 25 54276 0.1960 0.4222 -0.15695 2007 6 26 54277 0.1974 0.4202 -0.15727 2007 6 27 54278 0.1987 0.4180 -0.15738 2007 6 28 54279 0.2001 0.4159 -0.15733 2007 6 29 54280 0.2014 0.4137 -0.15719 2007 6 30 54281 0.2026 0.4115 -0.15697 2007 7 1 54282 0.2038 0.4092 -0.15676 2007 7 2 54283 0.2049 0.4069 -0.15664 2007 7 3 54284 0.2059 0.4046 -0.15671 2007 7 4 54285 0.2069 0.4022 -0.15704 2007 7 5 54286 0.2078 0.3998 -0.15760 2007 7 6 54287 0.2087 0.3974 -0.15832 2007 7 7 54288 0.2096 0.3950 -0.15911 2007 7 8 54289 0.2104 0.3925 -0.15984 2007 7 9 54290 0.2111 0.3900 -0.16039 2007 7 10 54291 0.2118 0.3876 -0.16070 2007 7 11 54292 0.2125 0.3851 -0.16074 2007 7 12 54293 0.2131 0.3825 -0.16056 2007 7 13 54294 0.2137 0.3800 -0.16029 2007 7 14 54295 0.2142 0.3774 -0.16004 2007 7 15 54296 0.2147 0.3749 -0.15994 2007 7 16 54297 0.2151 0.3723 -0.16006 2007 7 17 54298 0.2155 0.3698 -0.16039 2007 7 18 54299 0.2158 0.3672 -0.16090 2007 7 19 54300 0.2161 0.3646 -0.16150 2007 7 20 54301 0.2164 0.3620 -0.16210 2007 7 21 54302 0.2166 0.3594 -0.16262 2007 7 22 54303 0.2168 0.3568 -0.16301 2007 7 23 54304 0.2169 0.3542 -0.16323 2007 7 24 54305 0.2170 0.3516 -0.16327 2007 7 25 54306 0.2170 0.3490 -0.16313 2007 7 26 54307 0.2170 0.3464 -0.16285 2007 7 27 54308 0.2169 0.3438 -0.16248 2007 7 28 54309 0.2168 0.3412 -0.16212 2007 7 29 54310 0.2167 0.3386 -0.16187 2007 7 30 54311 0.2165 0.3360 -0.16183 2007 7 31 54312 0.2163 0.3334 -0.16207 2007 8 1 54313 0.2160 0.3308 -0.16260 2007 8 2 54314 0.2157 0.3282 -0.16335 2007 8 3 54315 0.2153 0.3256 -0.16421 2007 8 4 54316 0.2149 0.3230 -0.16503 2007 8 5 54317 0.2144 0.3204 -0.16569 2007 8 6 54318 0.2139 0.3179 -0.16609 2007 8 7 54319 0.2134 0.3153 -0.16621 2007 8 8 54320 0.2128 0.3128 -0.16610 2007 8 9 54321 0.2122 0.3102 -0.16585 2007 8 10 54322 0.2115 0.3077 -0.16558 2007 8 11 54323 0.2108 0.3052 -0.16541 2007 8 12 54324 0.2100 0.3027 -0.16543 2007 8 13 54325 0.2092 0.3002 -0.16565 2007 8 14 54326 0.2084 0.2977 -0.16605 2007 8 15 54327 0.2075 0.2952 -0.16657 2007 8 16 54328 0.2066 0.2927 -0.16713 2007 8 17 54329 0.2056 0.2903 -0.16765 2007 8 18 54330 0.2046 0.2879 -0.16806 2007 8 19 54331 0.2035 0.2854 -0.16832 2007 8 20 54332 0.2024 0.2831 -0.16842 2007 8 21 54333 0.2013 0.2807 -0.16834 2007 8 22 54334 0.2001 0.2783 -0.16813 2007 8 23 54335 0.1989 0.2760 -0.16783 2007 8 24 54336 0.1976 0.2736 -0.16753 2007 8 25 54337 0.1963 0.2713 -0.16731 2007 8 26 54338 0.1950 0.2690 -0.16728 2007 8 27 54339 0.1936 0.2668 -0.16752 2007 8 28 54340 0.1922 0.2645 -0.16808 2007 8 29 54341 0.1907 0.2623 -0.16893 2007 8 30 54342 0.1892 0.2601 -0.16995 2007 8 31 54343 0.1877 0.2579 -0.17100 2007 9 1 54344 0.1861 0.2558 -0.17192 2007 9 2 54345 0.1845 0.2537 -0.17259 2007 9 3 54346 0.1829 0.2516 -0.17298 2007 9 4 54347 0.1812 0.2495 -0.17312 2007 9 5 54348 0.1795 0.2474 -0.17312 2007 9 6 54349 0.1777 0.2454 -0.17312 2007 9 7 54350 0.1759 0.2434 -0.17323 2007 9 8 54351 0.1741 0.2414 -0.17353 2007 9 9 54352 0.1722 0.2395 -0.17406 2007 9 10 54353 0.1703 0.2376 -0.17480 2007 9 11 54354 0.1684 0.2357 -0.17572 2007 9 12 54355 0.1665 0.2338 -0.17673 2007 9 13 54356 0.1645 0.2320 -0.17775 2007 9 14 54357 0.1624 0.2302 -0.17871 2007 9 15 54358 0.1604 0.2285 -0.17955 2007 9 16 54359 0.1583 0.2267 -0.18024 2007 9 17 54360 0.1562 0.2250 -0.18078 2007 9 18 54361 0.1540 0.2234 -0.18118 2007 9 19 54362 0.1518 0.2217 -0.18150 2007 9 20 54363 0.1496 0.2201 -0.18178 2007 9 21 54364 0.1474 0.2186 -0.18213 2007 9 22 54365 0.1451 0.2170 -0.18264 2007 9 23 54366 0.1428 0.2156 -0.18339 2007 9 24 54367 0.1405 0.2141 -0.18446 2007 9 25 54368 0.1381 0.2127 -0.18585 2007 9 26 54369 0.1358 0.2113 -0.18750 2007 9 27 54370 0.1334 0.2099 -0.18926 2007 9 28 54371 0.1310 0.2086 -0.19097 2007 9 29 54372 0.1285 0.2073 -0.19245 2007 9 30 54373 0.1260 0.2061 -0.19361 2007 10 1 54374 0.1235 0.2049 -0.19448 2007 10 2 54375 0.1210 0.2037 -0.19513 2007 10 3 54376 0.1185 0.2026 -0.19571 2007 10 4 54377 0.1159 0.2015 -0.19636 2007 10 5 54378 0.1133 0.2005 -0.19715 2007 10 6 54379 0.1107 0.1995 -0.19814 2007 10 7 54380 0.1081 0.1985 -0.19933 2007 10 8 54381 0.1055 0.1976 -0.20067 2007 10 9 54382 0.1028 0.1967 -0.20210 2007 10 10 54383 0.1002 0.1959 -0.20354 2007 10 11 54384 0.0975 0.1951 -0.20493 2007 10 12 54385 0.0948 0.1943 -0.20621 2007 10 13 54386 0.0921 0.1936 -0.20732 2007 10 14 54387 0.0893 0.1929 -0.20827 2007 10 15 54388 0.0866 0.1923 -0.20905 2007 10 16 54389 0.0838 0.1917 -0.20973 2007 10 17 54390 0.0811 0.1911 -0.21035 2007 10 18 54391 0.0783 0.1906 -0.21099 2007 10 19 54392 0.0755 0.1902 -0.21174 2007 10 20 54393 0.0727 0.1897 -0.21267 2007 10 21 54394 0.0699 0.1894 -0.21387 2007 10 22 54395 0.0671 0.1890 -0.21537 2007 10 23 54396 0.0643 0.1887 -0.21715 2007 10 24 54397 0.0614 0.1885 -0.21911 2007 10 25 54398 0.0586 0.1883 -0.22109 2007 10 26 54399 0.0557 0.1881 -0.22293 2007 10 27 54400 0.0529 0.1880 -0.22449 2007 10 28 54401 0.0500 0.1879 -0.22572 2007 10 29 54402 0.0472 0.1879 -0.22667 2007 10 30 54403 0.0443 0.1879 -0.22748 2007 10 31 54404 0.0415 0.1880 -0.22828 2007 11 1 54405 0.0386 0.1881 -0.22920 2007 11 2 54406 0.0358 0.1882 -0.23031 2007 11 3 54407 0.0329 0.1884 -0.23159 2007 11 4 54408 0.0300 0.1886 -0.23302 2007 11 5 54409 0.0272 0.1889 -0.23453 2007 11 6 54410 0.0243 0.1892 -0.23605 2007 11 7 54411 0.0215 0.1896 -0.23752 2007 11 8 54412 0.0186 0.1900 -0.23887 2007 11 9 54413 0.0158 0.1904 -0.24006 2007 11 10 54414 0.0130 0.1909 -0.24107 2007 11 11 54415 0.0101 0.1915 -0.24190 2007 11 12 54416 0.0073 0.1921 -0.24260 2007 11 13 54417 0.0045 0.1927 -0.24321 2007 11 14 54418 0.0017 0.1934 -0.24381 2007 11 15 54419 -0.0011 0.1941 -0.24447 2007 11 16 54420 -0.0039 0.1948 -0.24528 2007 11 17 54421 -0.0066 0.1956 -0.24631 2007 11 18 54422 -0.0094 0.1965 -0.24758 2007 11 19 54423 -0.0121 0.1974 -0.24911 2007 11 20 54424 -0.0149 0.1983 -0.25083 2007 11 21 54425 -0.0176 0.1992 -0.25264 2007 11 22 54426 -0.0203 0.2003 -0.25439 2007 11 23 54427 -0.0230 0.2013 -0.25592 2007 11 24 54428 -0.0257 0.2024 -0.25715 2007 11 25 54429 -0.0283 0.2035 -0.25808 2007 11 26 54430 -0.0310 0.2047 -0.25881 2007 11 27 54431 -0.0336 0.2059 -0.25947 2007 11 28 54432 -0.0362 0.2072 -0.26021 2007 11 29 54433 -0.0388 0.2085 -0.26112 2007 11 30 54434 -0.0413 0.2098 -0.26222 2007 12 1 54435 -0.0439 0.2112 -0.26348 2007 12 2 54436 -0.0464 0.2126 -0.26483 2007 12 3 54437 -0.0489 0.2140 -0.26619 2007 12 4 54438 -0.0514 0.2155 -0.26749 2007 12 5 54439 -0.0538 0.2171 -0.26868 2007 12 6 54440 -0.0563 0.2186 -0.26971 2007 12 7 54441 -0.0587 0.2202 -0.27056 2007 12 8 54442 -0.0610 0.2219 -0.27124 2007 12 9 54443 -0.0634 0.2236 -0.27175 2007 12 10 54444 -0.0657 0.2253 -0.27217 2007 12 11 54445 -0.0680 0.2270 -0.27256 2007 12 12 54446 -0.0703 0.2288 -0.27300 2007 12 13 54447 -0.0725 0.2306 -0.27357 2007 12 14 54448 -0.0747 0.2325 -0.27432 2007 12 15 54449 -0.0769 0.2344 -0.27531 2007 12 16 54450 -0.0791 0.2363 -0.27652 2007 12 17 54451 -0.0812 0.2382 -0.27792 2007 12 18 54452 -0.0833 0.2402 -0.27942 2007 12 19 54453 -0.0853 0.2422 -0.28090 2007 12 20 54454 -0.0873 0.2443 -0.28225 2007 12 21 54455 -0.0893 0.2464 -0.28336 2007 12 22 54456 -0.0913 0.2485 -0.28422 2007 12 23 54457 -0.0932 0.2506 -0.28490 2007 12 24 54458 -0.0951 0.2528 -0.28552 2007 12 25 54459 -0.0969 0.2550 -0.28625 2007 12 26 54460 -0.0988 0.2572 -0.28719 2007 12 27 54461 -0.1005 0.2595 -0.28840 2007 12 28 54462 -0.1023 0.2617 -0.28984 2007 12 29 54463 -0.1040 0.2641 -0.29142 2007 12 30 54464 -0.1056 0.2664 -0.29302 2007 12 31 54465 -0.1073 0.2688 -0.29453 2008 1 1 54466 -0.1089 0.2711 -0.29587 2008 1 2 54467 -0.1104 0.2735 -0.29699 2008 1 3 54468 -0.1119 0.2760 -0.29789 2008 1 4 54469 -0.1134 0.2784 -0.29856 2008 1 5 54470 -0.1148 0.2809 -0.29905 2008 1 6 54471 -0.1162 0.2834 -0.29942 2008 1 7 54472 -0.1175 0.2859 -0.29974 2008 1 8 54473 -0.1188 0.2885 -0.30009 2008 1 9 54474 -0.1201 0.2910 -0.30057 2008 1 10 54475 -0.1213 0.2936 -0.30126 2008 1 11 54476 -0.1225 0.2962 -0.30218 2008 1 12 54477 -0.1236 0.2988 -0.30336 2008 1 13 54478 -0.1247 0.3015 -0.30473 2008 1 14 54479 -0.1258 0.3041 -0.30622 2008 1 15 54480 -0.1268 0.3068 -0.30768 2008 1 16 54481 -0.1277 0.3095 -0.30899 2008 1 17 54482 -0.1286 0.3122 -0.31006 2008 1 18 54483 -0.1295 0.3149 -0.31084 2008 1 19 54484 -0.1303 0.3176 -0.31138 2008 1 20 54485 -0.1311 0.3204 -0.31178 2008 1 21 54486 -0.1318 0.3231 -0.31216 2008 1 22 54487 -0.1325 0.3259 -0.31266 2008 1 23 54488 -0.1331 0.3286 -0.31337 2008 1 24 54489 -0.1337 0.3314 -0.31429 2008 1 25 54490 -0.1343 0.3342 -0.31536 2008 1 26 54491 -0.1348 0.3370 -0.31651 2008 1 27 54492 -0.1352 0.3398 -0.31766 2008 1 28 54493 -0.1356 0.3426 -0.31876 2008 1 29 54494 -0.1360 0.3454 -0.31971 2008 1 30 54495 -0.1363 0.3483 -0.32045 2008 1 31 54496 -0.1366 0.3511 -0.32095 2008 2 1 54497 -0.1368 0.3539 -0.32123 2008 2 2 54498 -0.1370 0.3567 -0.32138 2008 2 3 54499 -0.1371 0.3596 -0.32145 2008 2 4 54500 -0.1372 0.3624 -0.32152 2008 2 5 54501 -0.1372 0.3653 -0.32178 2008 2 6 54502 -0.1372 0.3681 -0.32228 2008 2 7 54503 -0.1371 0.3709 -0.32305 2008 2 8 54504 -0.1370 0.3738 -0.32414 2008 2 9 54505 -0.1368 0.3766 -0.32540 2008 2 10 54506 -0.1366 0.3794 -0.32685 2008 2 11 54507 -0.1363 0.3823 -0.32834 2008 2 12 54508 -0.1360 0.3851 -0.32970 2008 2 13 54509 -0.1357 0.3879 -0.33087 2008 2 14 54510 -0.1353 0.3907 -0.33178 2008 2 15 54511 -0.1348 0.3935 -0.33251 2008 2 16 54512 -0.1343 0.3963 -0.33307 2008 2 17 54513 -0.1338 0.3991 -0.33358 2008 2 18 54514 -0.1332 0.4019 -0.33416 2008 2 19 54515 -0.1325 0.4047 -0.33488 2008 2 20 54516 -0.1319 0.4075 -0.33587 2008 2 21 54517 -0.1311 0.4102 -0.33710 2008 2 22 54518 -0.1303 0.4129 -0.33851 2008 2 23 54519 -0.1295 0.4157 -0.34002 2008 2 24 54520 -0.1286 0.4184 -0.34156 2008 2 25 54521 -0.1277 0.4211 -0.34297 2008 2 26 54522 -0.1268 0.4238 -0.34425 2008 2 27 54523 -0.1258 0.4265 -0.34534 2008 2 28 54524 -0.1247 0.4291 -0.34621 2008 2 29 54525 -0.1236 0.4318 -0.34691 2008 3 1 54526 -0.1225 0.4344 -0.34749 2008 3 2 54527 -0.1213 0.4370 -0.34804 2008 3 3 54528 -0.1200 0.4396 -0.34866 2008 3 4 54529 -0.1188 0.4421 -0.34945 2008 3 5 54530 -0.1174 0.4447 -0.35049 2008 3 6 54531 -0.1161 0.4472 -0.35182 2008 3 7 54532 -0.1147 0.4497 -0.35349 2008 3 8 54533 -0.1132 0.4522 -0.35542 2008 3 9 54534 -0.1117 0.4547 -0.35758 2008 3 10 54535 -0.1102 0.4571 -0.35973 2008 3 11 54536 -0.1086 0.4595 -0.36166 2008 3 12 54537 -0.1070 0.4619 -0.36332 2008 3 13 54538 -0.1053 0.4643 -0.36471 2008 3 14 54539 -0.1036 0.4666 -0.36593 2008 3 15 54540 -0.1019 0.4689 -0.36702 2008 3 16 54541 -0.1001 0.4712 -0.36810 2008 3 17 54542 -0.0983 0.4735 -0.36926 2008 3 18 54543 -0.0964 0.4757 -0.37063 2008 3 19 54544 -0.0945 0.4779 -0.37220 2008 3 20 54545 -0.0926 0.4801 -0.37395 2008 3 21 54546 -0.0907 0.4822 -0.37583 2008 3 22 54547 -0.0886 0.4844 -0.37765 2008 3 23 54548 -0.0866 0.4864 -0.37929 2008 3 24 54549 -0.0845 0.4885 -0.38077 2008 3 25 54550 -0.0824 0.4905 -0.38204 2008 3 26 54551 -0.0803 0.4925 -0.38308 2008 3 27 54552 -0.0781 0.4944 -0.38394 2008 3 28 54553 -0.0759 0.4964 -0.38467 2008 3 29 54554 -0.0736 0.4982 -0.38539 2008 3 30 54555 -0.0714 0.5001 -0.38613 2008 3 31 54556 -0.0690 0.5019 -0.38696 2008 4 1 54557 -0.0667 0.5037 -0.38801 2008 4 2 54558 -0.0643 0.5054 -0.38929 2008 4 3 54559 -0.0619 0.5071 -0.39084 2008 4 4 54560 -0.0595 0.5088 -0.39266 2008 4 5 54561 -0.0570 0.5104 -0.39468 2008 4 6 54562 -0.0545 0.5120 -0.39674 2008 4 7 54563 -0.0520 0.5136 -0.39871 2008 4 8 54564 -0.0495 0.5151 -0.40032 2008 4 9 54565 -0.0469 0.5165 -0.40160 2008 4 10 54566 -0.0443 0.5180 -0.40264 2008 4 11 54567 -0.0417 0.5194 -0.40353 2008 4 12 54568 -0.0391 0.5207 -0.40442 2008 4 13 54569 -0.0364 0.5220 -0.40542 2008 4 14 54570 -0.0337 0.5233 -0.40659 2008 4 15 54571 -0.0310 0.5245 -0.40795 2008 4 16 54572 -0.0283 0.5257 -0.40947 2008 4 17 54573 -0.0255 0.5269 -0.41102 2008 4 18 54574 -0.0227 0.5280 -0.41256 2008 4 19 54575 -0.0199 0.5290 -0.41403 2008 4 20 54576 -0.0171 0.5301 -0.41534 2008 4 21 54577 -0.0143 0.5310 -0.41651 2008 4 22 54578 -0.0115 0.5320 -0.41752 2008 4 23 54579 -0.0086 0.5328 -0.41833 2008 4 24 54580 -0.0057 0.5337 -0.41899 2008 4 25 54581 -0.0028 0.5345 -0.41957 2008 4 26 54582 0.0001 0.5352 -0.42017 2008 4 27 54583 0.0030 0.5359 -0.42087 2008 4 28 54584 0.0059 0.5366 -0.42173 2008 4 29 54585 0.0089 0.5372 -0.42277 2008 4 30 54586 0.0118 0.5378 -0.42407 2008 5 1 54587 0.0148 0.5383 -0.42558 2008 5 2 54588 0.0178 0.5388 -0.42724 2008 5 3 54589 0.0207 0.5392 -0.42900 2008 5 4 54590 0.0237 0.5396 -0.43072 2008 5 5 54591 0.0267 0.5400 -0.43223 2008 5 6 54592 0.0297 0.5403 -0.43342 2008 5 7 54593 0.0327 0.5405 -0.43429 2008 5 8 54594 0.0358 0.5407 -0.43495 2008 5 9 54595 0.0388 0.5409 -0.43559 2008 5 10 54596 0.0418 0.5410 -0.43629 2008 5 11 54597 0.0448 0.5411 -0.43716 2008 5 12 54598 0.0478 0.5411 -0.43820 2008 5 13 54599 0.0509 0.5410 -0.43939 2008 5 14 54600 0.0539 0.5410 -0.44068 2008 5 15 54601 0.0569 0.5408 -0.44198 2008 5 16 54602 0.0599 0.5407 -0.44326 2008 5 17 54603 0.0630 0.5405 -0.44441 2008 5 18 54604 0.0660 0.5402 -0.44535 2008 5 19 54605 0.0690 0.5399 -0.44605 2008 5 20 54606 0.0720 0.5395 -0.44659 2008 5 21 54607 0.0750 0.5391 -0.44693 2008 5 22 54608 0.0780 0.5387 -0.44713 2008 5 23 54609 0.0810 0.5382 -0.44727 2008 5 24 54610 0.0840 0.5376 -0.44745 2008 5 25 54611 0.0870 0.5370 -0.44776 2008 5 26 54612 0.0899 0.5364 -0.44830 2008 5 27 54613 0.0929 0.5357 -0.44905 2008 5 28 54614 0.0958 0.5350 -0.45005 2008 5 29 54615 0.0987 0.5342 -0.45122 2008 5 30 54616 0.1017 0.5334 -0.45254 2008 5 31 54617 0.1046 0.5326 -0.45393 2008 6 1 54618 0.1075 0.5317 -0.45521 2008 6 2 54619 0.1103 0.5307 -0.45625 2008 6 3 54620 0.1132 0.5297 -0.45699 2008 6 4 54621 0.1160 0.5287 -0.45745 2008 6 5 54622 0.1189 0.5276 -0.45779 2008 6 6 54623 0.1217 0.5265 -0.45816 2008 6 7 54624 0.1244 0.5253 -0.45862 2008 6 8 54625 0.1272 0.5241 -0.45922 2008 6 9 54626 0.1300 0.5228 -0.45997 2008 6 10 54627 0.1327 0.5215 -0.46091 2008 6 11 54628 0.1354 0.5202 -0.46193 2008 6 12 54629 0.1381 0.5188 -0.46294 2008 6 13 54630 0.1407 0.5174 -0.46383 2008 6 14 54631 0.1434 0.5159 -0.46465 2008 6 15 54632 0.1460 0.5144 -0.46528 2008 6 16 54633 0.1486 0.5129 -0.46575 2008 6 17 54634 0.1511 0.5113 -0.46605 2008 6 18 54635 0.1537 0.5097 -0.46617 2008 6 19 54636 0.1562 0.5080 -0.46624 2008 6 20 54637 0.1587 0.5063 -0.46633 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) 54253 -56.83 .31 -7.69 .34 54254 -56.77 .37 -7.48 .34 54255 -56.74 .37 -7.32 .34 54256 -56.78 .16 -7.28 .34 54257 -56.85 .18 -7.32 .34 54258 -56.86 .18 -7.37 .34 54259 -56.84 .18 -7.37 .34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 54253 0.084 0.123 -0.390 0.340 54254 0.091 0.147 -0.400 0.340 54255 0.085 0.147 -0.404 0.340 54256 0.079 0.064 -0.399 0.340 54257 0.071 0.072 -0.392 0.340 54258 0.060 0.072 -0.396 0.340 54259 0.045 0.072 -0.410 0.340 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.