********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 2 August 2007 Vol. XX No. 031 ______________________________________________________________________ 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. 031, on 02 August 2007, we have * * incorporated the new GSFC VLBI solutions gsf2007c and gsfint21. * * 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 7 27 54308 .22998 .00010 .34840 .00010 -.161936 .000009 7 7 28 54309 .22922 .00009 .34580 .00009 -.161349 .000010 7 7 29 54310 .22850 .00009 .34291 .00009 -.160925 .000014 7 7 30 54311 .22806 .00009 .34000 .00010 -.160736 .000014 7 7 31 54312 .22756 .00009 .33711 .00010 -.160828 .000014 7 8 1 54313 .22704 .00009 .33424 .00010 -.161200 .000048 7 8 2 54314 .22655 .00009 .33144 .00010 -.161766 .000057 IERS Final Values MJD x y UT1-UTC " " s 7 6 4 54255 .1539 .4574 -.14455 7 6 5 54256 .1564 .4560 -.14493 7 6 6 54257 .1587 .4548 -.14553 7 6 7 54258 .1606 .4532 -.14628 7 6 8 54259 .1624 .4515 -.14726 7 6 9 54260 .1644 .4501 -.14833 7 6 10 54261 .1667 .4487 -.14947 7 6 11 54262 .1691 .4473 -.15052 7 6 12 54263 .1713 .4455 -.15145 7 6 13 54264 .1733 .4433 -.15209 7 6 14 54265 .1751 .4412 -.15232 7 6 15 54266 .1766 .4392 -.15238 7 6 16 54267 .1784 .4372 -.15232 7 6 17 54268 .1803 .4354 -.15232 7 6 18 54269 .1825 .4336 -.15250 7 6 19 54270 .1848 .4320 -.15287 7 6 20 54271 .1871 .4307 -.15343 7 6 21 54272 .1894 .4293 -.15413 7 6 22 54273 .1915 .4273 -.15489 7 6 23 54274 .1936 .4250 -.15561 7 6 24 54275 .1957 .4229 -.15621 7 6 25 54276 .1980 .4209 -.15674 7 6 26 54277 .2007 .4192 -.15710 7 6 27 54278 .2032 .4178 -.15732 7 6 28 54279 .2052 .4164 -.15743 7 6 29 54280 .2067 .4149 -.15743 7 6 30 54281 .2079 .4133 -.15739 7 7 1 54282 .2087 .4117 -.15735 7 7 2 54283 .2091 .4096 -.15740 7 7 3 54284 .2098 .4073 -.15774 _______________________________________________________________________ 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 = .0565 + .0462 cos A + .0724 sin A + .1177 cos C - .0750 sin C y = .3442 + .0661 cos A - .0430 sin A - .0750 cos C - .1177 sin C UT1-UTC = -.1726 - .00096 (MJD - 54319) - (UT2-UT1) where A = 2*pi*(MJD-54314)/365.25 and C = 2*pi*(MJD-54314)/435. TAI-UTC(MJD 54315) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-54314)**0.80 S t = 0.00025 (MJD-54314)**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 8 3 54315 0.2261 0.3287 -0.16241 2007 8 4 54316 0.2255 0.3261 -0.16304 2007 8 5 54317 0.2249 0.3234 -0.16353 2007 8 6 54318 0.2243 0.3207 -0.16376 2007 8 7 54319 0.2237 0.3180 -0.16372 2007 8 8 54320 0.2230 0.3153 -0.16344 2007 8 9 54321 0.2222 0.3127 -0.16304 2007 8 10 54322 0.2215 0.3100 -0.16262 2007 8 11 54323 0.2206 0.3074 -0.16232 2007 8 12 54324 0.2198 0.3048 -0.16223 2007 8 13 54325 0.2189 0.3022 -0.16234 2007 8 14 54326 0.2180 0.2996 -0.16264 2007 8 15 54327 0.2170 0.2971 -0.16307 2007 8 16 54328 0.2160 0.2945 -0.16357 2007 8 17 54329 0.2149 0.2920 -0.16405 2007 8 18 54330 0.2138 0.2894 -0.16445 2007 8 19 54331 0.2127 0.2869 -0.16473 2007 8 20 54332 0.2115 0.2845 -0.16487 2007 8 21 54333 0.2103 0.2820 -0.16487 2007 8 22 54334 0.2090 0.2796 -0.16476 2007 8 23 54335 0.2077 0.2771 -0.16459 2007 8 24 54336 0.2063 0.2747 -0.16445 2007 8 25 54337 0.2049 0.2723 -0.16444 2007 8 26 54338 0.2035 0.2700 -0.16464 2007 8 27 54339 0.2020 0.2676 -0.16515 2007 8 28 54340 0.2005 0.2653 -0.16600 2007 8 29 54341 0.1990 0.2630 -0.16714 2007 8 30 54342 0.1974 0.2607 -0.16847 2007 8 31 54343 0.1957 0.2585 -0.16983 2007 9 1 54344 0.1941 0.2563 -0.17105 2007 9 2 54345 0.1923 0.2541 -0.17200 2007 9 3 54346 0.1906 0.2519 -0.17264 2007 9 4 54347 0.1888 0.2498 -0.17303 2007 9 5 54348 0.1870 0.2476 -0.17326 2007 9 6 54349 0.1851 0.2456 -0.17346 2007 9 7 54350 0.1832 0.2435 -0.17375 2007 9 8 54351 0.1813 0.2415 -0.17421 2007 9 9 54352 0.1793 0.2395 -0.17489 2007 9 10 54353 0.1773 0.2375 -0.17578 2007 9 11 54354 0.1753 0.2355 -0.17683 2007 9 12 54355 0.1732 0.2336 -0.17797 2007 9 13 54356 0.1711 0.2318 -0.17911 2007 9 14 54357 0.1689 0.2299 -0.18020 2007 9 15 54358 0.1667 0.2281 -0.18115 2007 9 16 54359 0.1645 0.2263 -0.18196 2007 9 17 54360 0.1623 0.2246 -0.18263 2007 9 18 54361 0.1600 0.2228 -0.18317 2007 9 19 54362 0.1577 0.2212 -0.18363 2007 9 20 54363 0.1554 0.2195 -0.18408 2007 9 21 54364 0.1530 0.2179 -0.18459 2007 9 22 54365 0.1506 0.2163 -0.18524 2007 9 23 54366 0.1482 0.2148 -0.18614 2007 9 24 54367 0.1458 0.2133 -0.18735 2007 9 25 54368 0.1433 0.2118 -0.18888 2007 9 26 54369 0.1408 0.2104 -0.19066 2007 9 27 54370 0.1382 0.2090 -0.19255 2007 9 28 54371 0.1357 0.2077 -0.19436 2007 9 29 54372 0.1331 0.2064 -0.19594 2007 9 30 54373 0.1305 0.2051 -0.19720 2007 10 1 54374 0.1279 0.2039 -0.19816 2007 10 2 54375 0.1252 0.2027 -0.19890 2007 10 3 54376 0.1226 0.2015 -0.19956 2007 10 4 54377 0.1199 0.2004 -0.20028 2007 10 5 54378 0.1172 0.1993 -0.20115 2007 10 6 54379 0.1144 0.1983 -0.20223 2007 10 7 54380 0.1117 0.1973 -0.20350 2007 10 8 54381 0.1089 0.1964 -0.20494 2007 10 9 54382 0.1061 0.1955 -0.20646 2007 10 10 54383 0.1033 0.1946 -0.20799 2007 10 11 54384 0.1005 0.1938 -0.20945 2007 10 12 54385 0.0977 0.1930 -0.21079 2007 10 13 54386 0.0948 0.1923 -0.21195 2007 10 14 54387 0.0919 0.1916 -0.21294 2007 10 15 54388 0.0891 0.1910 -0.21376 2007 10 16 54389 0.0862 0.1904 -0.21446 2007 10 17 54390 0.0833 0.1898 -0.21511 2007 10 18 54391 0.0803 0.1893 -0.21576 2007 10 19 54392 0.0774 0.1889 -0.21652 2007 10 20 54393 0.0745 0.1884 -0.21745 2007 10 21 54394 0.0715 0.1881 -0.21863 2007 10 22 54395 0.0686 0.1877 -0.22012 2007 10 23 54396 0.0656 0.1874 -0.22187 2007 10 24 54397 0.0626 0.1872 -0.22380 2007 10 25 54398 0.0597 0.1870 -0.22574 2007 10 26 54399 0.0567 0.1869 -0.22753 2007 10 27 54400 0.0537 0.1868 -0.22903 2007 10 28 54401 0.0507 0.1867 -0.23020 2007 10 29 54402 0.0477 0.1867 -0.23109 2007 10 30 54403 0.0447 0.1867 -0.23182 2007 10 31 54404 0.0418 0.1868 -0.23254 2007 11 1 54405 0.0388 0.1869 -0.23338 2007 11 2 54406 0.0358 0.1871 -0.23440 2007 11 3 54407 0.0328 0.1873 -0.23560 2007 11 4 54408 0.0298 0.1876 -0.23696 2007 11 5 54409 0.0268 0.1879 -0.23841 2007 11 6 54410 0.0238 0.1882 -0.23988 2007 11 7 54411 0.0208 0.1886 -0.24131 2007 11 8 54412 0.0179 0.1891 -0.24263 2007 11 9 54413 0.0149 0.1896 -0.24380 2007 11 10 54414 0.0119 0.1901 -0.24481 2007 11 11 54415 0.0090 0.1907 -0.24565 2007 11 12 54416 0.0060 0.1913 -0.24636 2007 11 13 54417 0.0031 0.1920 -0.24701 2007 11 14 54418 0.0002 0.1927 -0.24765 2007 11 15 54419 -0.0028 0.1935 -0.24837 2007 11 16 54420 -0.0057 0.1943 -0.24924 2007 11 17 54421 -0.0086 0.1951 -0.25033 2007 11 18 54422 -0.0115 0.1960 -0.25168 2007 11 19 54423 -0.0143 0.1970 -0.25328 2007 11 20 54424 -0.0172 0.1979 -0.25509 2007 11 21 54425 -0.0200 0.1990 -0.25698 2007 11 22 54426 -0.0228 0.2000 -0.25881 2007 11 23 54427 -0.0256 0.2012 -0.26042 2007 11 24 54428 -0.0284 0.2023 -0.26174 2007 11 25 54429 -0.0312 0.2035 -0.26276 2007 11 26 54430 -0.0340 0.2048 -0.26358 2007 11 27 54431 -0.0367 0.2060 -0.26434 2007 11 28 54432 -0.0394 0.2074 -0.26517 2007 11 29 54433 -0.0421 0.2087 -0.26618 2007 11 30 54434 -0.0448 0.2101 -0.26737 2007 12 1 54435 -0.0474 0.2116 -0.26872 2007 12 2 54436 -0.0501 0.2131 -0.27016 2007 12 3 54437 -0.0527 0.2146 -0.27161 2007 12 4 54438 -0.0552 0.2162 -0.27301 2007 12 5 54439 -0.0578 0.2178 -0.27429 2007 12 6 54440 -0.0603 0.2194 -0.27541 2007 12 7 54441 -0.0628 0.2211 -0.27635 2007 12 8 54442 -0.0653 0.2229 -0.27712 2007 12 9 54443 -0.0677 0.2246 -0.27772 2007 12 10 54444 -0.0701 0.2264 -0.27823 2007 12 11 54445 -0.0725 0.2283 -0.27871 2007 12 12 54446 -0.0749 0.2302 -0.27924 2007 12 13 54447 -0.0772 0.2321 -0.27990 2007 12 14 54448 -0.0795 0.2340 -0.28074 2007 12 15 54449 -0.0818 0.2360 -0.28181 2007 12 16 54450 -0.0840 0.2380 -0.28312 2007 12 17 54451 -0.0862 0.2401 -0.28461 2007 12 18 54452 -0.0884 0.2422 -0.28620 2007 12 19 54453 -0.0905 0.2443 -0.28776 2007 12 20 54454 -0.0926 0.2464 -0.28917 2007 12 21 54455 -0.0947 0.2486 -0.29033 2007 12 22 54456 -0.0967 0.2508 -0.29122 2007 12 23 54457 -0.0987 0.2531 -0.29187 2007 12 24 54458 -0.1006 0.2554 -0.29242 2007 12 25 54459 -0.1025 0.2577 -0.29301 2007 12 26 54460 -0.1044 0.2600 -0.29375 2007 12 27 54461 -0.1062 0.2624 -0.29470 2007 12 28 54462 -0.1080 0.2648 -0.29583 2007 12 29 54463 -0.1098 0.2672 -0.29710 2007 12 30 54464 -0.1115 0.2697 -0.29839 2007 12 31 54465 -0.1132 0.2721 -0.29965 2008 1 1 54466 -0.1148 0.2747 -0.30079 2008 1 2 54467 -0.1164 0.2772 -0.30178 2008 1 3 54468 -0.1180 0.2797 -0.30259 2008 1 4 54469 -0.1195 0.2823 -0.30322 2008 1 5 54470 -0.1210 0.2849 -0.30369 2008 1 6 54471 -0.1224 0.2875 -0.30404 2008 1 7 54472 -0.1238 0.2902 -0.30435 2008 1 8 54473 -0.1251 0.2929 -0.30471 2008 1 9 54474 -0.1264 0.2955 -0.30518 2008 1 10 54475 -0.1276 0.2983 -0.30584 2008 1 11 54476 -0.1288 0.3010 -0.30674 2008 1 12 54477 -0.1300 0.3037 -0.30788 2008 1 13 54478 -0.1311 0.3065 -0.30921 2008 1 14 54479 -0.1322 0.3093 -0.31064 2008 1 15 54480 -0.1332 0.3121 -0.31207 2008 1 16 54481 -0.1342 0.3149 -0.31337 2008 1 17 54482 -0.1351 0.3177 -0.31444 2008 1 18 54483 -0.1360 0.3206 -0.31526 2008 1 19 54484 -0.1368 0.3234 -0.31586 2008 1 20 54485 -0.1376 0.3263 -0.31632 2008 1 21 54486 -0.1383 0.3292 -0.31678 2008 1 22 54487 -0.1390 0.3321 -0.31736 2008 1 23 54488 -0.1396 0.3350 -0.31815 2008 1 24 54489 -0.1402 0.3379 -0.31915 2008 1 25 54490 -0.1407 0.3408 -0.32033 2008 1 26 54491 -0.1412 0.3438 -0.32158 2008 1 27 54492 -0.1417 0.3467 -0.32282 2008 1 28 54493 -0.1421 0.3497 -0.32395 2008 1 29 54494 -0.1424 0.3526 -0.32492 2008 1 30 54495 -0.1427 0.3556 -0.32568 2008 1 31 54496 -0.1429 0.3585 -0.32623 2008 2 1 54497 -0.1431 0.3615 -0.32658 2008 2 2 54498 -0.1433 0.3645 -0.32676 2008 2 3 54499 -0.1434 0.3675 -0.32683 2008 2 4 54500 -0.1434 0.3704 -0.32688 2008 2 5 54501 -0.1434 0.3734 -0.32700 2008 2 6 54502 -0.1433 0.3764 -0.32727 2008 2 7 54503 -0.1432 0.3794 -0.32779 2008 2 8 54504 -0.1431 0.3824 -0.32858 2008 2 9 54505 -0.1429 0.3853 -0.32965 2008 2 10 54506 -0.1426 0.3883 -0.33093 2008 2 11 54507 -0.1423 0.3913 -0.33232 2008 2 12 54508 -0.1419 0.3942 -0.33369 2008 2 13 54509 -0.1415 0.3972 -0.33495 2008 2 14 54510 -0.1411 0.4002 -0.33607 2008 2 15 54511 -0.1406 0.4031 -0.33707 2008 2 16 54512 -0.1400 0.4060 -0.33800 2008 2 17 54513 -0.1394 0.4090 -0.33898 2008 2 18 54514 -0.1387 0.4119 -0.34010 2008 2 19 54515 -0.1380 0.4148 -0.34144 2008 2 20 54516 -0.1373 0.4177 -0.34303 2008 2 21 54517 -0.1365 0.4206 -0.34482 2008 2 22 54518 -0.1356 0.4235 -0.34674 2008 2 23 54519 -0.1347 0.4263 -0.34869 2008 2 24 54520 -0.1337 0.4292 -0.35057 2008 2 25 54521 -0.1327 0.4320 -0.35231 2008 2 26 54522 -0.1317 0.4349 -0.35387 2008 2 27 54523 -0.1306 0.4377 -0.35522 2008 2 28 54524 -0.1294 0.4404 -0.35638 2008 2 29 54525 -0.1283 0.4432 -0.35737 2008 3 1 54526 -0.1270 0.4460 -0.35826 2008 3 2 54527 -0.1257 0.4487 -0.35909 2008 3 3 54528 -0.1244 0.4514 -0.35995 2008 3 4 54529 -0.1230 0.4541 -0.36093 2008 3 5 54530 -0.1216 0.4568 -0.36209 2008 3 6 54531 -0.1201 0.4595 -0.36349 2008 3 7 54532 -0.1186 0.4621 -0.36515 2008 3 8 54533 -0.1171 0.4647 -0.36700 2008 3 9 54534 -0.1154 0.4673 -0.36891 2008 3 10 54535 -0.1138 0.4699 -0.37081 2008 3 11 54536 -0.1121 0.4724 -0.37255 2008 3 12 54537 -0.1104 0.4749 -0.37405 2008 3 13 54538 -0.1086 0.4774 -0.37530 2008 3 14 54539 -0.1068 0.4799 -0.37637 2008 3 15 54540 -0.1049 0.4823 -0.37737 2008 3 16 54541 -0.1030 0.4847 -0.37831 2008 3 17 54542 -0.1011 0.4871 -0.37939 2008 3 18 54543 -0.0991 0.4894 -0.38067 2008 3 19 54544 -0.0971 0.4917 -0.38214 2008 3 20 54545 -0.0950 0.4940 -0.38377 2008 3 21 54546 -0.0929 0.4963 -0.38549 2008 3 22 54547 -0.0908 0.4985 -0.38720 2008 3 23 54548 -0.0886 0.5007 -0.38881 2008 3 24 54549 -0.0864 0.5028 -0.39031 2008 3 25 54550 -0.0841 0.5049 -0.39166 2008 3 26 54551 -0.0818 0.5070 -0.39279 2008 3 27 54552 -0.0795 0.5091 -0.39370 2008 3 28 54553 -0.0771 0.5111 -0.39454 2008 3 29 54554 -0.0747 0.5131 -0.39536 2008 3 30 54555 -0.0723 0.5150 -0.39614 2008 3 31 54556 -0.0698 0.5169 -0.39711 2008 4 1 54557 -0.0674 0.5188 -0.39833 2008 4 2 54558 -0.0648 0.5206 -0.39979 2008 4 3 54559 -0.0623 0.5224 -0.40156 2008 4 4 54560 -0.0597 0.5242 -0.40356 2008 4 5 54561 -0.0571 0.5259 -0.40569 2008 4 6 54562 -0.0544 0.5276 -0.40782 2008 4 7 54563 -0.0517 0.5292 -0.40974 2008 4 8 54564 -0.0490 0.5308 -0.41140 2008 4 9 54565 -0.0463 0.5324 -0.41273 2008 4 10 54566 -0.0436 0.5339 -0.41374 2008 4 11 54567 -0.0408 0.5354 -0.41459 2008 4 12 54568 -0.0380 0.5368 -0.41547 2008 4 13 54569 -0.0351 0.5382 -0.41645 2008 4 14 54570 -0.0323 0.5395 -0.41759 2008 4 15 54571 -0.0294 0.5408 -0.41891 2008 4 16 54572 -0.0265 0.5421 -0.42039 2008 4 17 54573 -0.0236 0.5433 -0.42192 2008 4 18 54574 -0.0206 0.5444 -0.42342 2008 4 19 54575 -0.0177 0.5456 -0.42480 2008 4 20 54576 -0.0147 0.5466 -0.42605 2008 4 21 54577 -0.0117 0.5477 -0.42716 2008 4 22 54578 -0.0087 0.5487 -0.42805 2008 4 23 54579 -0.0056 0.5496 -0.42873 2008 4 24 54580 -0.0026 0.5505 -0.42922 2008 4 25 54581 0.0005 0.5513 -0.42957 2008 4 26 54582 0.0036 0.5521 -0.42991 2008 4 27 54583 0.0067 0.5529 -0.43030 2008 4 28 54584 0.0098 0.5536 -0.43081 2008 4 29 54585 0.0129 0.5542 -0.43160 2008 4 30 54586 0.0160 0.5548 -0.43267 2008 5 1 54587 0.0192 0.5554 -0.43401 2008 5 2 54588 0.0223 0.5559 -0.43557 2008 5 3 54589 0.0255 0.5564 -0.43712 2008 5 4 54590 0.0287 0.5568 -0.43864 2008 5 5 54591 0.0319 0.5572 -0.43995 2008 5 6 54592 0.0350 0.5575 -0.44096 2008 5 7 54593 0.0382 0.5578 -0.44169 2008 5 8 54594 0.0414 0.5580 -0.44222 2008 5 9 54595 0.0446 0.5582 -0.44276 2008 5 10 54596 0.0478 0.5583 -0.44337 2008 5 11 54597 0.0510 0.5584 -0.44412 2008 5 12 54598 0.0542 0.5584 -0.44501 2008 5 13 54599 0.0574 0.5584 -0.44601 2008 5 14 54600 0.0606 0.5583 -0.44711 2008 5 15 54601 0.0639 0.5582 -0.44822 2008 5 16 54602 0.0671 0.5580 -0.44928 2008 5 17 54603 0.0703 0.5578 -0.45025 2008 5 18 54604 0.0735 0.5575 -0.45110 2008 5 19 54605 0.0766 0.5572 -0.45175 2008 5 20 54606 0.0798 0.5568 -0.45222 2008 5 21 54607 0.0830 0.5564 -0.45255 2008 5 22 54608 0.0862 0.5560 -0.45273 2008 5 23 54609 0.0894 0.5555 -0.45285 2008 5 24 54610 0.0925 0.5549 -0.45297 2008 5 25 54611 0.0957 0.5543 -0.45320 2008 5 26 54612 0.0988 0.5536 -0.45358 2008 5 27 54613 0.1019 0.5529 -0.45416 2008 5 28 54614 0.1050 0.5522 -0.45497 2008 5 29 54615 0.1081 0.5514 -0.45597 2008 5 30 54616 0.1112 0.5505 -0.45712 2008 5 31 54617 0.1143 0.5496 -0.45832 2008 6 1 54618 0.1174 0.5487 -0.45951 2008 6 2 54619 0.1204 0.5477 -0.46050 2008 6 3 54620 0.1234 0.5467 -0.46119 2008 6 4 54621 0.1264 0.5456 -0.46166 2008 6 5 54622 0.1294 0.5445 -0.46202 2008 6 6 54623 0.1324 0.5433 -0.46244 2008 6 7 54624 0.1354 0.5421 -0.46296 2008 6 8 54625 0.1383 0.5408 -0.46361 2008 6 9 54626 0.1412 0.5395 -0.46436 2008 6 10 54627 0.1441 0.5381 -0.46520 2008 6 11 54628 0.1470 0.5367 -0.46603 2008 6 12 54629 0.1498 0.5353 -0.46679 2008 6 13 54630 0.1526 0.5338 -0.46745 2008 6 14 54631 0.1554 0.5323 -0.46787 2008 6 15 54632 0.1582 0.5307 -0.46801 2008 6 16 54633 0.1609 0.5291 -0.46795 2008 6 17 54634 0.1636 0.5274 -0.46770 2008 6 18 54635 0.1663 0.5257 -0.46731 2008 6 19 54636 0.1690 0.5240 -0.46685 2008 6 20 54637 0.1716 0.5222 -0.46641 2008 6 21 54638 0.1742 0.5204 -0.46611 2008 6 22 54639 0.1768 0.5185 -0.46595 2008 6 23 54640 0.1793 0.5166 -0.46596 2008 6 24 54641 0.1818 0.5147 -0.46620 2008 6 25 54642 0.1843 0.5127 -0.46659 2008 6 26 54643 0.1867 0.5107 -0.46708 2008 6 27 54644 0.1891 0.5087 -0.46761 2008 6 28 54645 0.1915 0.5066 -0.46809 2008 6 29 54646 0.1938 0.5044 -0.46841 2008 6 30 54647 0.1961 0.5023 -0.46854 2008 7 1 54648 0.1983 0.5001 -0.46836 2008 7 2 54649 0.2006 0.4979 -0.46801 2008 7 3 54650 0.2028 0.4956 -0.46766 2008 7 4 54651 0.2049 0.4933 -0.46745 2008 7 5 54652 0.2070 0.4910 -0.46744 2008 7 6 54653 0.2091 0.4886 -0.46763 2008 7 7 54654 0.2111 0.4862 -0.46797 2008 7 8 54655 0.2131 0.4838 -0.46836 2008 7 9 54656 0.2150 0.4813 -0.46870 2008 7 10 54657 0.2169 0.4788 -0.46886 2008 7 11 54658 0.2188 0.4763 -0.46882 2008 7 12 54659 0.2206 0.4738 -0.46861 2008 7 13 54660 0.2224 0.4712 -0.46818 2008 7 14 54661 0.2241 0.4686 -0.46764 2008 7 15 54662 0.2258 0.4660 -0.46702 2008 7 16 54663 0.2274 0.4633 -0.46634 2008 7 17 54664 0.2290 0.4606 -0.46569 2008 7 18 54665 0.2306 0.4579 -0.46512 2008 7 19 54666 0.2321 0.4552 -0.46475 2008 7 20 54667 0.2335 0.4525 -0.46462 2008 7 21 54668 0.2349 0.4497 -0.46472 2008 7 22 54669 0.2363 0.4469 -0.46499 2008 7 23 54670 0.2376 0.4441 -0.46541 2008 7 24 54671 0.2389 0.4412 -0.46583 2008 7 25 54672 0.2401 0.4384 -0.46614 2008 7 26 54673 0.2413 0.4355 -0.46633 2008 7 27 54674 0.2424 0.4326 -0.46633 2008 7 28 54675 0.2435 0.4297 -0.46614 2008 7 29 54676 0.2445 0.4268 -0.46577 2008 7 30 54677 0.2455 0.4238 -0.46535 2008 7 31 54678 0.2464 0.4209 -0.46503 2008 8 1 54679 0.2473 0.4179 -0.46494 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) 54295 -62.91 .74 -7.21 .19 54296 -62.72 .22 -7.10 .12 54297 -62.56 .22 -6.88 .12 54298 -62.63 .27 -6.63 .34 54299 -63.03 .26 -6.45 .34 54300 -63.68 .26 -6.44 .34 54301 -64.31 .26 -6.60 .34 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 54255 -56.6 -7.3 54256 -56.8 -7.3 54257 -56.9 -7.3 54258 -56.8 -7.3 54259 -56.6 -7.3 54260 -56.5 -7.2 54261 -56.8 -7.1 54262 -57.4 -6.9 54263 -58.1 -6.9 54264 -58.5 -6.9 54265 -58.7 -7.1 54266 -58.7 -7.2 54267 -58.5 -7.2 54268 -58.2 -7.2 54269 -57.8 -7.2 54270 -57.7 -7.1 54271 -58.1 -6.8 54272 -58.7 -6.7 54273 -59.3 -6.7 54274 -59.6 -6.8 54275 -59.8 -6.8 54276 -59.9 -6.8 54277 -60.0 -6.8 54278 -60.1 -7.0 54279 -60.2 -7.2 54280 -60.4 -7.3 54281 -60.6 -7.2 54282 -60.8 -6.9 54283 -61.0 -6.8 54284 -61.1 -6.8 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 54295 -0.007 0.294 -0.534 0.190 54296 0.014 0.088 -0.517 0.120 54297 0.017 0.088 -0.502 0.120 54298 0.004 0.107 -0.494 0.340 54299 -0.012 0.103 -0.469 0.340 54300 -0.031 0.103 -0.437 0.340 54301 -0.050 0.103 -0.430 0.340 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 54255 0.14 -0.38 54256 0.07 -0.42 54257 0.05 -0.37 54258 0.08 -0.33 54259 0.14 -0.34 54260 0.20 -0.35 54261 0.19 -0.45 54262 0.15 -0.45 54263 0.08 -0.51 54264 0.07 -0.38 54265 0.05 -0.34 54266 0.04 -0.27 54267 0.05 -0.22 54268 0.05 -0.24 54269 0.08 -0.35 54270 0.13 -0.47 54271 0.17 -0.42 54272 0.20 -0.46 54273 0.16 -0.42 54274 0.10 -0.41 54275 0.02 -0.36 54276 0.01 -0.38 54277 0.04 -0.37 54278 0.11 -0.44 54279 0.18 -0.44 54280 0.21 -0.45 54281 0.19 -0.45 54282 0.12 -0.37 54283 0.04 -0.46 54284 0.01 -0.53 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.