********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 31 May 2007 Vol. XX No. 022 ______________________________________________________________________ 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 ********************************************************************** * As of Bulletin A Vol. XX, No. 023, on 07 June 2007, we will * * adopt the new 05C04 EOP system. This will result in a jump of * * less than 0.5 mas in polar motion and 10 us in UT1-UTC. The * * only users who need to be concerned with this change are those * * who need EOP accuracy to better than 1.0 mas (~3 cm at the * * Earth's surface, ~13 cm at GPS orbit). * ********************************************************************** ________________________________________________________________________ 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 5 25 54245 .13147 .00009 .47161 .00010 -.137332 .000013 7 5 26 54246 .13372 .00009 .47077 .00010 -.138633 .000013 7 5 27 54247 .13558 .00009 .46986 .00010 -.139865 .000012 7 5 28 54248 .13722 .00009 .46862 .00009 -.140995 .000032 7 5 29 54249 .13890 .00009 .46713 .00010 -.141988 .000037 7 5 30 54250 .14088 .00009 .46541 .00010 -.142817 .000048 7 5 31 54251 .14344 .00010 .46352 .00009 -.143485 .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 = .0570 - .0383 cos A + .0810 sin A + .1293 cos C + .0387 sin C y = .3461 + .0748 cos A + .0323 sin A + .0387 cos C - .1293 sin C UT1-UTC = -.1099 - .00097 (MJD - 54256) - (UT2-UT1) where A = 2*pi*(MJD-54251)/365.25 and C = 2*pi*(MJD-54251)/435. TAI-UTC(MJD 54252) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-54251)**0.80 S t = 0.00025 (MJD-54251)**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 1 54252 0.1457 0.4620 -0.14397 2007 6 2 54253 0.1484 0.4604 -0.14429 2007 6 3 54254 0.1508 0.4589 -0.14453 2007 6 4 54255 0.1530 0.4574 -0.14483 2007 6 5 54256 0.1550 0.4558 -0.14528 2007 6 6 54257 0.1569 0.4542 -0.14593 2007 6 7 54258 0.1588 0.4524 -0.14682 2007 6 8 54259 0.1606 0.4506 -0.14798 2007 6 9 54260 0.1625 0.4488 -0.14931 2007 6 10 54261 0.1643 0.4470 -0.15069 2007 6 11 54262 0.1661 0.4452 -0.15196 2007 6 12 54263 0.1679 0.4433 -0.15299 2007 6 13 54264 0.1695 0.4415 -0.15373 2007 6 14 54265 0.1712 0.4395 -0.15420 2007 6 15 54266 0.1727 0.4376 -0.15448 2007 6 16 54267 0.1743 0.4356 -0.15470 2007 6 17 54268 0.1758 0.4336 -0.15499 2007 6 18 54269 0.1773 0.4316 -0.15541 2007 6 19 54270 0.1788 0.4296 -0.15598 2007 6 20 54271 0.1802 0.4275 -0.15668 2007 6 21 54272 0.1816 0.4254 -0.15747 2007 6 22 54273 0.1829 0.4233 -0.15828 2007 6 23 54274 0.1842 0.4212 -0.15903 2007 6 24 54275 0.1855 0.4191 -0.15967 2007 6 25 54276 0.1867 0.4169 -0.16014 2007 6 26 54277 0.1879 0.4148 -0.16040 2007 6 27 54278 0.1891 0.4126 -0.16046 2007 6 28 54279 0.1902 0.4104 -0.16033 2007 6 29 54280 0.1913 0.4081 -0.16007 2007 6 30 54281 0.1923 0.4059 -0.15975 2007 7 1 54282 0.1933 0.4036 -0.15947 2007 7 2 54283 0.1943 0.4014 -0.15931 2007 7 3 54284 0.1952 0.3991 -0.15938 2007 7 4 54285 0.1961 0.3968 -0.15972 2007 7 5 54286 0.1970 0.3945 -0.16031 2007 7 6 54287 0.1978 0.3921 -0.16108 2007 7 7 54288 0.1986 0.3898 -0.16190 2007 7 8 54289 0.1993 0.3874 -0.16263 2007 7 9 54290 0.2000 0.3851 -0.16315 2007 7 10 54291 0.2007 0.3827 -0.16338 2007 7 11 54292 0.2013 0.3803 -0.16331 2007 7 12 54293 0.2019 0.3780 -0.16301 2007 7 13 54294 0.2025 0.3756 -0.16259 2007 7 14 54295 0.2030 0.3732 -0.16218 2007 7 15 54296 0.2034 0.3707 -0.16189 2007 7 16 54297 0.2038 0.3683 -0.16177 2007 7 17 54298 0.2042 0.3659 -0.16183 2007 7 18 54299 0.2046 0.3635 -0.16204 2007 7 19 54300 0.2049 0.3610 -0.16231 2007 7 20 54301 0.2051 0.3586 -0.16259 2007 7 21 54302 0.2053 0.3562 -0.16279 2007 7 22 54303 0.2055 0.3537 -0.16285 2007 7 23 54304 0.2056 0.3513 -0.16274 2007 7 24 54305 0.2057 0.3488 -0.16244 2007 7 25 54306 0.2058 0.3464 -0.16198 2007 7 26 54307 0.2058 0.3440 -0.16137 2007 7 27 54308 0.2058 0.3415 -0.16070 2007 7 28 54309 0.2057 0.3391 -0.16003 2007 7 29 54310 0.2056 0.3366 -0.15949 2007 7 30 54311 0.2054 0.3342 -0.15915 2007 7 31 54312 0.2052 0.3317 -0.15911 2007 8 1 54313 0.2050 0.3293 -0.15936 2007 8 2 54314 0.2047 0.3269 -0.15986 2007 8 3 54315 0.2044 0.3245 -0.16049 2007 8 4 54316 0.2040 0.3220 -0.16109 2007 8 5 54317 0.2036 0.3196 -0.16152 2007 8 6 54318 0.2031 0.3172 -0.16172 2007 8 7 54319 0.2026 0.3148 -0.16165 2007 8 8 54320 0.2021 0.3125 -0.16138 2007 8 9 54321 0.2015 0.3101 -0.16101 2007 8 10 54322 0.2009 0.3077 -0.16065 2007 8 11 54323 0.2003 0.3053 -0.16042 2007 8 12 54324 0.1996 0.3030 -0.16040 2007 8 13 54325 0.1988 0.3007 -0.16060 2007 8 14 54326 0.1981 0.2983 -0.16101 2007 8 15 54327 0.1973 0.2960 -0.16154 2007 8 16 54328 0.1964 0.2937 -0.16214 2007 8 17 54329 0.1955 0.2914 -0.16271 2007 8 18 54330 0.1946 0.2892 -0.16319 2007 8 19 54331 0.1936 0.2869 -0.16353 2007 8 20 54332 0.1926 0.2847 -0.16370 2007 8 21 54333 0.1915 0.2825 -0.16372 2007 8 22 54334 0.1904 0.2802 -0.16361 2007 8 23 54335 0.1893 0.2781 -0.16343 2007 8 24 54336 0.1881 0.2759 -0.16326 2007 8 25 54337 0.1869 0.2737 -0.16318 2007 8 26 54338 0.1857 0.2716 -0.16330 2007 8 27 54339 0.1844 0.2695 -0.16370 2007 8 28 54340 0.1831 0.2674 -0.16442 2007 8 29 54341 0.1817 0.2653 -0.16544 2007 8 30 54342 0.1803 0.2633 -0.16664 2007 8 31 54343 0.1789 0.2613 -0.16787 2007 9 1 54344 0.1774 0.2592 -0.16896 2007 9 2 54345 0.1759 0.2573 -0.16980 2007 9 3 54346 0.1744 0.2553 -0.17034 2007 9 4 54347 0.1728 0.2534 -0.17062 2007 9 5 54348 0.1712 0.2515 -0.17076 2007 9 6 54349 0.1696 0.2496 -0.17087 2007 9 7 54350 0.1679 0.2477 -0.17108 2007 9 8 54351 0.1662 0.2459 -0.17146 2007 9 9 54352 0.1645 0.2441 -0.17206 2007 9 10 54353 0.1627 0.2423 -0.17285 2007 9 11 54354 0.1609 0.2406 -0.17380 2007 9 12 54355 0.1591 0.2388 -0.17483 2007 9 13 54356 0.1572 0.2372 -0.17585 2007 9 14 54357 0.1553 0.2355 -0.17681 2007 9 15 54358 0.1534 0.2339 -0.17764 2007 9 16 54359 0.1514 0.2323 -0.17831 2007 9 17 54360 0.1494 0.2307 -0.17882 2007 9 18 54361 0.1474 0.2292 -0.17919 2007 9 19 54362 0.1454 0.2276 -0.17947 2007 9 20 54363 0.1433 0.2262 -0.17973 2007 9 21 54364 0.1412 0.2247 -0.18004 2007 9 22 54365 0.1391 0.2233 -0.18050 2007 9 23 54366 0.1369 0.2219 -0.18122 2007 9 24 54367 0.1348 0.2206 -0.18224 2007 9 25 54368 0.1326 0.2193 -0.18358 2007 9 26 54369 0.1303 0.2180 -0.18518 2007 9 27 54370 0.1281 0.2168 -0.18690 2007 9 28 54371 0.1258 0.2156 -0.18856 2007 9 29 54372 0.1235 0.2144 -0.18999 2007 9 30 54373 0.1212 0.2133 -0.19110 2007 10 1 54374 0.1189 0.2122 -0.19191 2007 10 2 54375 0.1165 0.2111 -0.19251 2007 10 3 54376 0.1141 0.2101 -0.19303 2007 10 4 54377 0.1117 0.2091 -0.19360 2007 10 5 54378 0.1093 0.2081 -0.19433 2007 10 6 54379 0.1069 0.2072 -0.19526 2007 10 7 54380 0.1045 0.2063 -0.19638 2007 10 8 54381 0.1020 0.2055 -0.19765 2007 10 9 54382 0.0995 0.2047 -0.19901 2007 10 10 54383 0.0970 0.2039 -0.20039 2007 10 11 54384 0.0945 0.2032 -0.20172 2007 10 12 54385 0.0920 0.2025 -0.20292 2007 10 13 54386 0.0894 0.2019 -0.20397 2007 10 14 54387 0.0869 0.2013 -0.20485 2007 10 15 54388 0.0843 0.2007 -0.20557 2007 10 16 54389 0.0817 0.2002 -0.20618 2007 10 17 54390 0.0791 0.1997 -0.20673 2007 10 18 54391 0.0765 0.1993 -0.20731 2007 10 19 54392 0.0739 0.1989 -0.20799 2007 10 20 54393 0.0713 0.1985 -0.20887 2007 10 21 54394 0.0687 0.1982 -0.21001 2007 10 22 54395 0.0660 0.1979 -0.21145 2007 10 23 54396 0.0634 0.1977 -0.21317 2007 10 24 54397 0.0607 0.1975 -0.21508 2007 10 25 54398 0.0581 0.1973 -0.21702 2007 10 26 54399 0.0554 0.1972 -0.21882 2007 10 27 54400 0.0528 0.1971 -0.22034 2007 10 28 54401 0.0501 0.1971 -0.22153 2007 10 29 54402 0.0474 0.1971 -0.22245 2007 10 30 54403 0.0448 0.1971 -0.22322 2007 10 31 54404 0.0421 0.1972 -0.22400 2007 11 1 54405 0.0394 0.1973 -0.22489 2007 11 2 54406 0.0368 0.1975 -0.22597 2007 11 3 54407 0.0341 0.1977 -0.22723 2007 11 4 54408 0.0314 0.1980 -0.22864 2007 11 5 54409 0.0288 0.1983 -0.23012 2007 11 6 54410 0.0261 0.1986 -0.23162 2007 11 7 54411 0.0234 0.1990 -0.23307 2007 11 8 54412 0.0208 0.1994 -0.23440 2007 11 9 54413 0.0181 0.1998 -0.23557 2007 11 10 54414 0.0155 0.2003 -0.23656 2007 11 11 54415 0.0128 0.2009 -0.23738 2007 11 12 54416 0.0102 0.2015 -0.23805 2007 11 13 54417 0.0076 0.2021 -0.23865 2007 11 14 54418 0.0050 0.2028 -0.23923 2007 11 15 54419 0.0024 0.2035 -0.23989 2007 11 16 54420 -0.0002 0.2042 -0.24069 2007 11 17 54421 -0.0028 0.2050 -0.24171 2007 11 18 54422 -0.0054 0.2058 -0.24299 2007 11 19 54423 -0.0079 0.2067 -0.24452 2007 11 20 54424 -0.0105 0.2076 -0.24626 2007 11 21 54425 -0.0130 0.2085 -0.24808 2007 11 22 54426 -0.0155 0.2095 -0.24984 2007 11 23 54427 -0.0181 0.2105 -0.25140 2007 11 24 54428 -0.0205 0.2116 -0.25267 2007 11 25 54429 -0.0230 0.2127 -0.25365 2007 11 26 54430 -0.0255 0.2138 -0.25443 2007 11 27 54431 -0.0279 0.2150 -0.25517 2007 11 28 54432 -0.0303 0.2162 -0.25600 2007 11 29 54433 -0.0327 0.2174 -0.25703 2007 11 30 54434 -0.0351 0.2187 -0.25827 2007 12 1 54435 -0.0375 0.2200 -0.25970 2007 12 2 54436 -0.0398 0.2214 -0.26125 2007 12 3 54437 -0.0421 0.2228 -0.26285 2007 12 4 54438 -0.0444 0.2242 -0.26441 2007 12 5 54439 -0.0467 0.2257 -0.26588 2007 12 6 54440 -0.0490 0.2271 -0.26717 2007 12 7 54441 -0.0512 0.2287 -0.26826 2007 12 8 54442 -0.0534 0.2302 -0.26913 2007 12 9 54443 -0.0556 0.2318 -0.26981 2007 12 10 54444 -0.0577 0.2335 -0.27036 2007 12 11 54445 -0.0599 0.2351 -0.27085 2007 12 12 54446 -0.0620 0.2368 -0.27137 2007 12 13 54447 -0.0640 0.2386 -0.27200 2007 12 14 54448 -0.0661 0.2403 -0.27280 2007 12 15 54449 -0.0681 0.2421 -0.27381 2007 12 16 54450 -0.0701 0.2440 -0.27501 2007 12 17 54451 -0.0720 0.2458 -0.27638 2007 12 18 54452 -0.0739 0.2477 -0.27781 2007 12 19 54453 -0.0758 0.2496 -0.27918 2007 12 20 54454 -0.0777 0.2516 -0.28038 2007 12 21 54455 -0.0795 0.2535 -0.28131 2007 12 22 54456 -0.0813 0.2555 -0.28194 2007 12 23 54457 -0.0831 0.2575 -0.28232 2007 12 24 54458 -0.0848 0.2596 -0.28258 2007 12 25 54459 -0.0865 0.2617 -0.28288 2007 12 26 54460 -0.0882 0.2638 -0.28333 2007 12 27 54461 -0.0898 0.2659 -0.28402 2007 12 28 54462 -0.0914 0.2681 -0.28493 2007 12 29 54463 -0.0930 0.2703 -0.28598 2007 12 30 54464 -0.0945 0.2725 -0.28709 2007 12 31 54465 -0.0960 0.2747 -0.28816 2008 1 1 54466 -0.0974 0.2769 -0.28913 2008 1 2 54467 -0.0988 0.2792 -0.28995 2008 1 3 54468 -0.1002 0.2815 -0.29060 2008 1 4 54469 -0.1015 0.2838 -0.29110 2008 1 5 54470 -0.1028 0.2862 -0.29144 2008 1 6 54471 -0.1041 0.2885 -0.29165 2008 1 7 54472 -0.1053 0.2909 -0.29179 2008 1 8 54473 -0.1065 0.2933 -0.29191 2008 1 9 54474 -0.1076 0.2957 -0.29219 2008 1 10 54475 -0.1087 0.2981 -0.29269 2008 1 11 54476 -0.1098 0.3005 -0.29346 2008 1 12 54477 -0.1108 0.3030 -0.29452 2008 1 13 54478 -0.1118 0.3055 -0.29585 2008 1 14 54479 -0.1127 0.3080 -0.29728 2008 1 15 54480 -0.1136 0.3105 -0.29873 2008 1 16 54481 -0.1145 0.3130 -0.30006 2008 1 17 54482 -0.1153 0.3155 -0.30113 2008 1 18 54483 -0.1160 0.3181 -0.30191 2008 1 19 54484 -0.1167 0.3206 -0.30243 2008 1 20 54485 -0.1174 0.3232 -0.30280 2008 1 21 54486 -0.1181 0.3257 -0.30317 2008 1 22 54487 -0.1186 0.3283 -0.30367 2008 1 23 54488 -0.1192 0.3309 -0.30441 2008 1 24 54489 -0.1197 0.3335 -0.30539 2008 1 25 54490 -0.1202 0.3361 -0.30661 2008 1 26 54491 -0.1206 0.3387 -0.30798 2008 1 27 54492 -0.1209 0.3413 -0.30951 2008 1 28 54493 -0.1213 0.3440 -0.31100 2008 1 29 54494 -0.1216 0.3466 -0.31234 2008 1 30 54495 -0.1218 0.3492 -0.31352 2008 1 31 54496 -0.1220 0.3519 -0.31451 2008 2 1 54497 -0.1221 0.3545 -0.31535 2008 2 2 54498 -0.1222 0.3571 -0.31601 2008 2 3 54499 -0.1223 0.3598 -0.31655 2008 2 4 54500 -0.1223 0.3624 -0.31704 2008 2 5 54501 -0.1223 0.3651 -0.31763 2008 2 6 54502 -0.1222 0.3677 -0.31840 2008 2 7 54503 -0.1221 0.3703 -0.31944 2008 2 8 54504 -0.1219 0.3730 -0.32079 2008 2 9 54505 -0.1217 0.3756 -0.32233 2008 2 10 54506 -0.1214 0.3782 -0.32394 2008 2 11 54507 -0.1211 0.3809 -0.32557 2008 2 12 54508 -0.1208 0.3835 -0.32705 2008 2 13 54509 -0.1204 0.3861 -0.32829 2008 2 14 54510 -0.1200 0.3887 -0.32924 2008 2 15 54511 -0.1195 0.3913 -0.32995 2008 2 16 54512 -0.1189 0.3939 -0.33053 2008 2 17 54513 -0.1184 0.3965 -0.33108 2008 2 18 54514 -0.1178 0.3990 -0.33169 2008 2 19 54515 -0.1171 0.4016 -0.33253 2008 2 20 54516 -0.1164 0.4041 -0.33360 2008 2 21 54517 -0.1156 0.4067 -0.33487 2008 2 22 54518 -0.1149 0.4092 -0.33631 2008 2 23 54519 -0.1140 0.4117 -0.33786 2008 2 24 54520 -0.1131 0.4142 -0.33941 2008 2 25 54521 -0.1122 0.4167 -0.34090 2008 2 26 54522 -0.1113 0.4192 -0.34214 2008 2 27 54523 -0.1102 0.4216 -0.34317 2008 2 28 54524 -0.1092 0.4241 -0.34402 2008 2 29 54525 -0.1081 0.4265 -0.34473 2008 3 1 54526 -0.1070 0.4289 -0.34534 2008 3 2 54527 -0.1058 0.4313 -0.34594 2008 3 3 54528 -0.1046 0.4337 -0.34659 2008 3 4 54529 -0.1033 0.4360 -0.34741 2008 3 5 54530 -0.1020 0.4384 -0.34846 2008 3 6 54531 -0.1007 0.4407 -0.34976 2008 3 7 54532 -0.0993 0.4430 -0.35132 2008 3 8 54533 -0.0979 0.4452 -0.35309 2008 3 9 54534 -0.0964 0.4475 -0.35494 2008 3 10 54535 -0.0949 0.4497 -0.35676 2008 3 11 54536 -0.0934 0.4519 -0.35841 2008 3 12 54537 -0.0918 0.4541 -0.35978 2008 3 13 54538 -0.0902 0.4562 -0.36086 2008 3 14 54539 -0.0885 0.4583 -0.36174 2008 3 15 54540 -0.0869 0.4604 -0.36257 2008 3 16 54541 -0.0851 0.4625 -0.36349 2008 3 17 54542 -0.0834 0.4646 -0.36458 2008 3 18 54543 -0.0816 0.4666 -0.36588 2008 3 19 54544 -0.0797 0.4686 -0.36740 2008 3 20 54545 -0.0779 0.4705 -0.36906 2008 3 21 54546 -0.0760 0.4725 -0.37078 2008 3 22 54547 -0.0740 0.4744 -0.37252 2008 3 23 54548 -0.0721 0.4762 -0.37420 2008 3 24 54549 -0.0701 0.4781 -0.37574 2008 3 25 54550 -0.0680 0.4799 -0.37708 2008 3 26 54551 -0.0660 0.4817 -0.37819 2008 3 27 54552 -0.0639 0.4834 -0.37914 2008 3 28 54553 -0.0617 0.4851 -0.37999 2008 3 29 54554 -0.0596 0.4868 -0.38078 2008 3 30 54555 -0.0574 0.4884 -0.38161 2008 3 31 54556 -0.0552 0.4900 -0.38254 2008 4 1 54557 -0.0529 0.4916 -0.38366 2008 4 2 54558 -0.0507 0.4932 -0.38506 2008 4 3 54559 -0.0484 0.4947 -0.38676 2008 4 4 54560 -0.0460 0.4961 -0.38876 2008 4 5 54561 -0.0437 0.4976 -0.39092 2008 4 6 54562 -0.0413 0.4990 -0.39306 2008 4 7 54563 -0.0389 0.5003 -0.39501 2008 4 8 54564 -0.0365 0.5016 -0.39672 2008 4 9 54565 -0.0340 0.5029 -0.39809 2008 4 10 54566 -0.0315 0.5042 -0.39916 2008 4 11 54567 -0.0290 0.5054 -0.40007 2008 4 12 54568 -0.0265 0.5065 -0.40097 2008 4 13 54569 -0.0240 0.5077 -0.40202 2008 4 14 54570 -0.0214 0.5088 -0.40332 2008 4 15 54571 -0.0188 0.5098 -0.40481 2008 4 16 54572 -0.0162 0.5108 -0.40650 2008 4 17 54573 -0.0136 0.5118 -0.40826 2008 4 18 54574 -0.0110 0.5127 -0.41007 2008 4 19 54575 -0.0083 0.5136 -0.41188 2008 4 20 54576 -0.0057 0.5144 -0.41360 2008 4 21 54577 -0.0030 0.5152 -0.41515 2008 4 22 54578 -0.0003 0.5160 -0.41648 2008 4 23 54579 0.0024 0.5167 -0.41759 2008 4 24 54580 0.0052 0.5174 -0.41854 2008 4 25 54581 0.0079 0.5180 -0.41941 2008 4 26 54582 0.0106 0.5186 -0.42021 2008 4 27 54583 0.0134 0.5192 -0.42101 2008 4 28 54584 0.0162 0.5197 -0.42194 2008 4 29 54585 0.0190 0.5201 -0.42316 2008 4 30 54586 0.0218 0.5206 -0.42470 2008 5 1 54587 0.0246 0.5209 -0.42654 2008 5 2 54588 0.0274 0.5213 -0.42860 2008 5 3 54589 0.0302 0.5216 -0.43083 2008 5 4 54590 0.0330 0.5218 -0.43300 2008 5 5 54591 0.0358 0.5220 -0.43498 2008 5 6 54592 0.0387 0.5222 -0.43666 2008 5 7 54593 0.0415 0.5223 -0.43797 2008 5 8 54594 0.0443 0.5224 -0.43908 2008 5 9 54595 0.0472 0.5224 -0.44012 2008 5 10 54596 0.0500 0.5224 -0.44119 2008 5 11 54597 0.0528 0.5223 -0.44238 2008 5 12 54598 0.0557 0.5222 -0.44369 2008 5 13 54599 0.0585 0.5220 -0.44510 2008 5 14 54600 0.0614 0.5219 -0.44655 2008 5 15 54601 0.0642 0.5216 -0.44790 2008 5 16 54602 0.0670 0.5213 -0.44914 2008 5 17 54603 0.0699 0.5210 -0.45024 2008 5 18 54604 0.0727 0.5206 -0.45107 2008 5 19 54605 0.0755 0.5202 -0.45163 2008 5 20 54606 0.0783 0.5198 -0.45190 2008 5 21 54607 0.0811 0.5193 -0.45198 2008 5 22 54608 0.0839 0.5187 -0.45192 2008 5 23 54609 0.0867 0.5181 -0.45180 2008 5 24 54610 0.0895 0.5175 -0.45165 2008 5 25 54611 0.0923 0.5168 -0.45156 2008 5 26 54612 0.0951 0.5161 -0.45164 2008 5 27 54613 0.0978 0.5154 -0.45193 2008 5 28 54614 0.1005 0.5146 -0.45238 2008 5 29 54615 0.1033 0.5137 -0.45300 2008 5 30 54616 0.1060 0.5128 -0.45375 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) 54232 -54.30 .74 -7.77 .34 54233 -54.45 .12 -7.47 .34 54234 -54.92 .12 -7.02 .34 54235 -55.64 .17 -6.74 .34 54236 -56.32 .26 -6.81 .34 54237 -56.70 .26 -7.10 .34 54238 -56.70 .26 -7.42 .34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 54232 0.141 0.294 -0.371 0.340 54233 0.127 0.048 -0.326 0.340 54234 0.100 0.048 -0.308 0.340 54235 0.082 0.068 -0.321 0.340 54236 0.074 0.103 -0.332 0.340 54237 0.065 0.103 -0.327 0.340 54238 0.056 0.103 -0.342 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.