********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 12 July 2007 Vol. XX No. 028 ______________________________________________________________________ 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 ********************************************************************** * There will NOT be a leap second introduced * * in UTC on 31 December 2007. * ********************************************************************** ________________________________________________________________________ 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 6 54287 .21303 .00009 .40087 .00009 -.159971 .000010 7 7 7 54288 .21424 .00009 .39866 .00010 -.160934 .000009 7 7 8 54289 .21507 .00010 .39632 .00010 -.161824 .000010 7 7 9 54290 .21580 .00009 .39379 .00010 -.162461 .000011 7 7 10 54291 .21667 .00009 .39109 .00010 -.162803 .000009 7 7 11 54292 .21760 .00009 .38838 .00010 -.162863 .000048 7 7 12 54293 .21835 .00010 .38566 .00010 -.162717 .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 = .0616 + .0188 cos A + .0847 sin A + .1338 cos C - .0376 sin C y = .3478 + .0776 cos A - .0184 sin A - .0376 cos C - .1338 sin C UT1-UTC = -.1569 - .00097 (MJD - 54298) - (UT2-UT1) where A = 2*pi*(MJD-54293)/365.25 and C = 2*pi*(MJD-54293)/435. TAI-UTC(MJD 54294) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-54293)**0.80 S t = 0.00025 (MJD-54293)**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 7 13 54294 0.2191 0.3830 -0.16241 2007 7 14 54295 0.2197 0.3804 -0.16211 2007 7 15 54296 0.2203 0.3778 -0.16196 2007 7 16 54297 0.2207 0.3751 -0.16200 2007 7 17 54298 0.2211 0.3725 -0.16222 2007 7 18 54299 0.2215 0.3698 -0.16258 2007 7 19 54300 0.2218 0.3672 -0.16304 2007 7 20 54301 0.2221 0.3645 -0.16350 2007 7 21 54302 0.2223 0.3618 -0.16392 2007 7 22 54303 0.2225 0.3592 -0.16423 2007 7 23 54304 0.2226 0.3565 -0.16441 2007 7 24 54305 0.2227 0.3538 -0.16445 2007 7 25 54306 0.2227 0.3512 -0.16435 2007 7 26 54307 0.2227 0.3485 -0.16415 2007 7 27 54308 0.2226 0.3458 -0.16390 2007 7 28 54309 0.2224 0.3432 -0.16367 2007 7 29 54310 0.2223 0.3405 -0.16355 2007 7 30 54311 0.2221 0.3378 -0.16364 2007 7 31 54312 0.2218 0.3352 -0.16400 2007 8 1 54313 0.2215 0.3325 -0.16463 2007 8 2 54314 0.2211 0.3299 -0.16547 2007 8 3 54315 0.2207 0.3272 -0.16640 2007 8 4 54316 0.2203 0.3246 -0.16728 2007 8 5 54317 0.2198 0.3220 -0.16798 2007 8 6 54318 0.2192 0.3193 -0.16839 2007 8 7 54319 0.2186 0.3167 -0.16852 2007 8 8 54320 0.2180 0.3141 -0.16843 2007 8 9 54321 0.2173 0.3115 -0.16822 2007 8 10 54322 0.2166 0.3089 -0.16802 2007 8 11 54323 0.2158 0.3063 -0.16794 2007 8 12 54324 0.2150 0.3038 -0.16806 2007 8 13 54325 0.2142 0.3012 -0.16841 2007 8 14 54326 0.2133 0.2987 -0.16894 2007 8 15 54327 0.2123 0.2962 -0.16961 2007 8 16 54328 0.2113 0.2936 -0.17035 2007 8 17 54329 0.2103 0.2912 -0.17107 2007 8 18 54330 0.2092 0.2887 -0.17171 2007 8 19 54331 0.2081 0.2862 -0.17223 2007 8 20 54332 0.2070 0.2838 -0.17259 2007 8 21 54333 0.2058 0.2813 -0.17279 2007 8 22 54334 0.2045 0.2789 -0.17285 2007 8 23 54335 0.2032 0.2765 -0.17283 2007 8 24 54336 0.2019 0.2741 -0.17281 2007 8 25 54337 0.2005 0.2718 -0.17288 2007 8 26 54338 0.1991 0.2695 -0.17313 2007 8 27 54339 0.1977 0.2671 -0.17365 2007 8 28 54340 0.1962 0.2648 -0.17449 2007 8 29 54341 0.1947 0.2626 -0.17561 2007 8 30 54342 0.1931 0.2603 -0.17690 2007 8 31 54343 0.1915 0.2581 -0.17821 2007 9 1 54344 0.1898 0.2559 -0.17939 2007 9 2 54345 0.1882 0.2537 -0.18030 2007 9 3 54346 0.1864 0.2516 -0.18091 2007 9 4 54347 0.1847 0.2495 -0.18127 2007 9 5 54348 0.1829 0.2474 -0.18149 2007 9 6 54349 0.1811 0.2453 -0.18169 2007 9 7 54350 0.1792 0.2433 -0.18199 2007 9 8 54351 0.1773 0.2413 -0.18246 2007 9 9 54352 0.1753 0.2393 -0.18312 2007 9 10 54353 0.1734 0.2373 -0.18398 2007 9 11 54354 0.1714 0.2354 -0.18498 2007 9 12 54355 0.1693 0.2335 -0.18605 2007 9 13 54356 0.1672 0.2317 -0.18712 2007 9 14 54357 0.1651 0.2298 -0.18811 2007 9 15 54358 0.1630 0.2280 -0.18896 2007 9 16 54359 0.1608 0.2263 -0.18965 2007 9 17 54360 0.1586 0.2245 -0.19017 2007 9 18 54361 0.1564 0.2228 -0.19054 2007 9 19 54362 0.1541 0.2212 -0.19081 2007 9 20 54363 0.1518 0.2195 -0.19105 2007 9 21 54364 0.1495 0.2179 -0.19134 2007 9 22 54365 0.1472 0.2164 -0.19178 2007 9 23 54366 0.1448 0.2149 -0.19245 2007 9 24 54367 0.1424 0.2134 -0.19342 2007 9 25 54368 0.1399 0.2119 -0.19471 2007 9 26 54369 0.1375 0.2105 -0.19625 2007 9 27 54370 0.1350 0.2091 -0.19789 2007 9 28 54371 0.1325 0.2078 -0.19947 2007 9 29 54372 0.1299 0.2065 -0.20081 2007 9 30 54373 0.1274 0.2052 -0.20184 2007 10 1 54374 0.1248 0.2040 -0.20256 2007 10 2 54375 0.1222 0.2028 -0.20307 2007 10 3 54376 0.1196 0.2017 -0.20351 2007 10 4 54377 0.1169 0.2006 -0.20402 2007 10 5 54378 0.1143 0.1995 -0.20470 2007 10 6 54379 0.1116 0.1985 -0.20558 2007 10 7 54380 0.1089 0.1975 -0.20667 2007 10 8 54381 0.1062 0.1966 -0.20793 2007 10 9 54382 0.1034 0.1957 -0.20928 2007 10 10 54383 0.1007 0.1948 -0.21067 2007 10 11 54384 0.0979 0.1940 -0.21202 2007 10 12 54385 0.0951 0.1932 -0.21326 2007 10 13 54386 0.0923 0.1925 -0.21435 2007 10 14 54387 0.0895 0.1918 -0.21528 2007 10 15 54388 0.0866 0.1912 -0.21607 2007 10 16 54389 0.0838 0.1906 -0.21674 2007 10 17 54390 0.0809 0.1900 -0.21737 2007 10 18 54391 0.0781 0.1895 -0.21803 2007 10 19 54392 0.0752 0.1890 -0.21880 2007 10 20 54393 0.0723 0.1886 -0.21976 2007 10 21 54394 0.0694 0.1882 -0.22098 2007 10 22 54395 0.0665 0.1879 -0.22250 2007 10 23 54396 0.0636 0.1876 -0.22430 2007 10 24 54397 0.0607 0.1873 -0.22628 2007 10 25 54398 0.0578 0.1871 -0.22830 2007 10 26 54399 0.0548 0.1870 -0.23018 2007 10 27 54400 0.0519 0.1869 -0.23178 2007 10 28 54401 0.0490 0.1868 -0.23305 2007 10 29 54402 0.0460 0.1868 -0.23405 2007 10 30 54403 0.0431 0.1868 -0.23490 2007 10 31 54404 0.0401 0.1869 -0.23576 2007 11 1 54405 0.0372 0.1870 -0.23673 2007 11 2 54406 0.0343 0.1871 -0.23788 2007 11 3 54407 0.0313 0.1873 -0.23922 2007 11 4 54408 0.0284 0.1876 -0.24070 2007 11 5 54409 0.0254 0.1879 -0.24226 2007 11 6 54410 0.0225 0.1882 -0.24384 2007 11 7 54411 0.0196 0.1886 -0.24536 2007 11 8 54412 0.0166 0.1890 -0.24676 2007 11 9 54413 0.0137 0.1895 -0.24801 2007 11 10 54414 0.0108 0.1900 -0.24907 2007 11 11 54415 0.0079 0.1905 -0.24996 2007 11 12 54416 0.0050 0.1911 -0.25071 2007 11 13 54417 0.0021 0.1918 -0.25138 2007 11 14 54418 -0.0008 0.1925 -0.25204 2007 11 15 54419 -0.0037 0.1932 -0.25277 2007 11 16 54420 -0.0065 0.1940 -0.25365 2007 11 17 54421 -0.0094 0.1948 -0.25473 2007 11 18 54422 -0.0122 0.1957 -0.25607 2007 11 19 54423 -0.0150 0.1966 -0.25767 2007 11 20 54424 -0.0178 0.1976 -0.25946 2007 11 21 54425 -0.0206 0.1986 -0.26134 2007 11 22 54426 -0.0234 0.1996 -0.26315 2007 11 23 54427 -0.0262 0.2007 -0.26475 2007 11 24 54428 -0.0289 0.2018 -0.26604 2007 11 25 54429 -0.0317 0.2030 -0.26704 2007 11 26 54430 -0.0344 0.2042 -0.26784 2007 11 27 54431 -0.0371 0.2054 -0.26857 2007 11 28 54432 -0.0397 0.2067 -0.26938 2007 11 29 54433 -0.0424 0.2081 -0.27035 2007 11 30 54434 -0.0450 0.2094 -0.27152 2007 12 1 54435 -0.0476 0.2109 -0.27284 2007 12 2 54436 -0.0502 0.2123 -0.27425 2007 12 3 54437 -0.0528 0.2138 -0.27567 2007 12 4 54438 -0.0553 0.2154 -0.27703 2007 12 5 54439 -0.0578 0.2169 -0.27827 2007 12 6 54440 -0.0603 0.2185 -0.27935 2007 12 7 54441 -0.0628 0.2202 -0.28025 2007 12 8 54442 -0.0652 0.2219 -0.28097 2007 12 9 54443 -0.0677 0.2236 -0.28153 2007 12 10 54444 -0.0700 0.2254 -0.28199 2007 12 11 54445 -0.0724 0.2272 -0.28243 2007 12 12 54446 -0.0747 0.2290 -0.28291 2007 12 13 54447 -0.0770 0.2309 -0.28351 2007 12 14 54448 -0.0793 0.2328 -0.28431 2007 12 15 54449 -0.0815 0.2347 -0.28533 2007 12 16 54450 -0.0837 0.2367 -0.28658 2007 12 17 54451 -0.0859 0.2387 -0.28801 2007 12 18 54452 -0.0880 0.2407 -0.28954 2007 12 19 54453 -0.0902 0.2428 -0.29105 2007 12 20 54454 -0.0922 0.2449 -0.29241 2007 12 21 54455 -0.0943 0.2471 -0.29351 2007 12 22 54456 -0.0963 0.2492 -0.29434 2007 12 23 54457 -0.0982 0.2514 -0.29493 2007 12 24 54458 -0.1002 0.2537 -0.29542 2007 12 25 54459 -0.1021 0.2559 -0.29594 2007 12 26 54460 -0.1039 0.2582 -0.29661 2007 12 27 54461 -0.1057 0.2606 -0.29749 2007 12 28 54462 -0.1075 0.2629 -0.29855 2007 12 29 54463 -0.1093 0.2653 -0.29974 2007 12 30 54464 -0.1110 0.2677 -0.30095 2007 12 31 54465 -0.1126 0.2701 -0.30212 2008 1 1 54466 -0.1143 0.2726 -0.30318 2008 1 2 54467 -0.1158 0.2750 -0.30408 2008 1 3 54468 -0.1174 0.2775 -0.30479 2008 1 4 54469 -0.1189 0.2801 -0.30531 2008 1 5 54470 -0.1203 0.2826 -0.30567 2008 1 6 54471 -0.1218 0.2852 -0.30591 2008 1 7 54472 -0.1231 0.2878 -0.30610 2008 1 8 54473 -0.1245 0.2904 -0.30632 2008 1 9 54474 -0.1258 0.2930 -0.30665 2008 1 10 54475 -0.1270 0.2957 -0.30716 2008 1 11 54476 -0.1282 0.2984 -0.30790 2008 1 12 54477 -0.1294 0.3011 -0.30887 2008 1 13 54478 -0.1305 0.3038 -0.31004 2008 1 14 54479 -0.1315 0.3065 -0.31132 2008 1 15 54480 -0.1326 0.3093 -0.31262 2008 1 16 54481 -0.1335 0.3120 -0.31385 2008 1 17 54482 -0.1345 0.3148 -0.31492 2008 1 18 54483 -0.1354 0.3176 -0.31581 2008 1 19 54484 -0.1362 0.3204 -0.31657 2008 1 20 54485 -0.1370 0.3232 -0.31729 2008 1 21 54486 -0.1377 0.3261 -0.31807 2008 1 22 54487 -0.1384 0.3289 -0.31903 2008 1 23 54488 -0.1391 0.3317 -0.32022 2008 1 24 54489 -0.1397 0.3346 -0.32162 2008 1 25 54490 -0.1402 0.3375 -0.32316 2008 1 26 54491 -0.1407 0.3404 -0.32475 2008 1 27 54492 -0.1412 0.3433 -0.32628 2008 1 28 54493 -0.1416 0.3461 -0.32768 2008 1 29 54494 -0.1420 0.3490 -0.32889 2008 1 30 54495 -0.1423 0.3520 -0.32988 2008 1 31 54496 -0.1425 0.3549 -0.33068 2008 2 1 54497 -0.1427 0.3578 -0.33130 2008 2 2 54498 -0.1429 0.3607 -0.33179 2008 2 3 54499 -0.1430 0.3636 -0.33223 2008 2 4 54500 -0.1431 0.3666 -0.33268 2008 2 5 54501 -0.1431 0.3695 -0.33323 2008 2 6 54502 -0.1431 0.3724 -0.33394 2008 2 7 54503 -0.1430 0.3753 -0.33488 2008 2 8 54504 -0.1429 0.3783 -0.33608 2008 2 9 54505 -0.1427 0.3812 -0.33752 2008 2 10 54506 -0.1425 0.3841 -0.33911 2008 2 11 54507 -0.1422 0.3870 -0.34074 2008 2 12 54508 -0.1419 0.3899 -0.34227 2008 2 13 54509 -0.1415 0.3928 -0.34359 2008 2 14 54510 -0.1411 0.3958 -0.34462 2008 2 15 54511 -0.1406 0.3986 -0.34543 2008 2 16 54512 -0.1401 0.4015 -0.34610 2008 2 17 54513 -0.1395 0.4044 -0.34670 2008 2 18 54514 -0.1389 0.4073 -0.34746 2008 2 19 54515 -0.1382 0.4102 -0.34846 2008 2 20 54516 -0.1375 0.4130 -0.34971 2008 2 21 54517 -0.1368 0.4159 -0.35120 2008 2 22 54518 -0.1359 0.4187 -0.35283 2008 2 23 54519 -0.1351 0.4215 -0.35449 2008 2 24 54520 -0.1342 0.4243 -0.35611 2008 2 25 54521 -0.1332 0.4271 -0.35755 2008 2 26 54522 -0.1322 0.4299 -0.35884 2008 2 27 54523 -0.1312 0.4326 -0.35990 2008 2 28 54524 -0.1301 0.4354 -0.36073 2008 2 29 54525 -0.1290 0.4381 -0.36139 2008 3 1 54526 -0.1278 0.4408 -0.36200 2008 3 2 54527 -0.1265 0.4435 -0.36257 2008 3 3 54528 -0.1253 0.4462 -0.36320 2008 3 4 54529 -0.1239 0.4489 -0.36398 2008 3 5 54530 -0.1226 0.4515 -0.36500 2008 3 6 54531 -0.1212 0.4541 -0.36627 2008 3 7 54532 -0.1197 0.4567 -0.36779 2008 3 8 54533 -0.1182 0.4593 -0.36948 2008 3 9 54534 -0.1167 0.4618 -0.37126 2008 3 10 54535 -0.1151 0.4644 -0.37302 2008 3 11 54536 -0.1135 0.4669 -0.37456 2008 3 12 54537 -0.1118 0.4693 -0.37579 2008 3 13 54538 -0.1101 0.4718 -0.37669 2008 3 14 54539 -0.1083 0.4742 -0.37735 2008 3 15 54540 -0.1065 0.4766 -0.37792 2008 3 16 54541 -0.1047 0.4790 -0.37853 2008 3 17 54542 -0.1028 0.4813 -0.37928 2008 3 18 54543 -0.1009 0.4836 -0.38032 2008 3 19 54544 -0.0989 0.4859 -0.38162 2008 3 20 54545 -0.0969 0.4882 -0.38310 2008 3 21 54546 -0.0949 0.4904 -0.38472 2008 3 22 54547 -0.0928 0.4926 -0.38625 2008 3 23 54548 -0.0907 0.4947 -0.38774 2008 3 24 54549 -0.0886 0.4969 -0.38908 2008 3 25 54550 -0.0864 0.4990 -0.39023 2008 3 26 54551 -0.0842 0.5010 -0.39120 2008 3 27 54552 -0.0820 0.5031 -0.39201 2008 3 28 54553 -0.0797 0.5051 -0.39277 2008 3 29 54554 -0.0774 0.5070 -0.39347 2008 3 30 54555 -0.0750 0.5089 -0.39418 2008 3 31 54556 -0.0726 0.5108 -0.39496 2008 4 1 54557 -0.0702 0.5127 -0.39589 2008 4 2 54558 -0.0678 0.5145 -0.39710 2008 4 3 54559 -0.0653 0.5163 -0.39861 2008 4 4 54560 -0.0628 0.5180 -0.40039 2008 4 5 54561 -0.0602 0.5197 -0.40237 2008 4 6 54562 -0.0577 0.5214 -0.40442 2008 4 7 54563 -0.0551 0.5230 -0.40632 2008 4 8 54564 -0.0524 0.5246 -0.40796 2008 4 9 54565 -0.0498 0.5261 -0.40931 2008 4 10 54566 -0.0471 0.5276 -0.41036 2008 4 11 54567 -0.0444 0.5291 -0.41125 2008 4 12 54568 -0.0417 0.5305 -0.41210 2008 4 13 54569 -0.0389 0.5319 -0.41307 2008 4 14 54570 -0.0362 0.5332 -0.41420 2008 4 15 54571 -0.0334 0.5345 -0.41553 2008 4 16 54572 -0.0306 0.5357 -0.41703 2008 4 17 54573 -0.0277 0.5370 -0.41862 2008 4 18 54574 -0.0249 0.5381 -0.42027 2008 4 19 54575 -0.0220 0.5392 -0.42189 2008 4 20 54576 -0.0191 0.5403 -0.42352 2008 4 21 54577 -0.0162 0.5413 -0.42502 2008 4 22 54578 -0.0132 0.5423 -0.42630 2008 4 23 54579 -0.0103 0.5433 -0.42741 2008 4 24 54580 -0.0073 0.5442 -0.42839 2008 4 25 54581 -0.0043 0.5450 -0.42930 2008 4 26 54582 -0.0013 0.5458 -0.43016 2008 4 27 54583 0.0017 0.5466 -0.43102 2008 4 28 54584 0.0047 0.5473 -0.43194 2008 4 29 54585 0.0077 0.5480 -0.43306 2008 4 30 54586 0.0108 0.5486 -0.43440 2008 5 1 54587 0.0138 0.5491 -0.43600 2008 5 2 54588 0.0169 0.5497 -0.43783 2008 5 3 54589 0.0200 0.5501 -0.43967 2008 5 4 54590 0.0231 0.5506 -0.44135 2008 5 5 54591 0.0262 0.5510 -0.44280 2008 5 6 54592 0.0293 0.5513 -0.44392 2008 5 7 54593 0.0324 0.5516 -0.44472 2008 5 8 54594 0.0355 0.5518 -0.44530 2008 5 9 54595 0.0386 0.5520 -0.44581 2008 5 10 54596 0.0417 0.5522 -0.44644 2008 5 11 54597 0.0448 0.5523 -0.44722 2008 5 12 54598 0.0480 0.5523 -0.44816 2008 5 13 54599 0.0511 0.5523 -0.44927 2008 5 14 54600 0.0542 0.5523 -0.45045 2008 5 15 54601 0.0573 0.5522 -0.45160 2008 5 16 54602 0.0604 0.5520 -0.45270 2008 5 17 54603 0.0636 0.5518 -0.45371 2008 5 18 54604 0.0667 0.5516 -0.45456 2008 5 19 54605 0.0698 0.5513 -0.45529 2008 5 20 54606 0.0729 0.5510 -0.45573 2008 5 21 54607 0.0760 0.5506 -0.45599 2008 5 22 54608 0.0791 0.5502 -0.45615 2008 5 23 54609 0.0822 0.5497 -0.45628 2008 5 24 54610 0.0853 0.5492 -0.45644 2008 5 25 54611 0.0883 0.5486 -0.45670 2008 5 26 54612 0.0914 0.5480 -0.45711 2008 5 27 54613 0.0944 0.5473 -0.45773 2008 5 28 54614 0.0975 0.5466 -0.45856 2008 5 29 54615 0.1005 0.5458 -0.45952 2008 5 30 54616 0.1035 0.5450 -0.46057 2008 5 31 54617 0.1065 0.5442 -0.46161 2008 6 1 54618 0.1095 0.5433 -0.46248 2008 6 2 54619 0.1125 0.5423 -0.46315 2008 6 3 54620 0.1154 0.5413 -0.46356 2008 6 4 54621 0.1184 0.5403 -0.46373 2008 6 5 54622 0.1213 0.5392 -0.46378 2008 6 6 54623 0.1242 0.5381 -0.46386 2008 6 7 54624 0.1271 0.5369 -0.46412 2008 6 8 54625 0.1299 0.5357 -0.46461 2008 6 9 54626 0.1328 0.5345 -0.46530 2008 6 10 54627 0.1356 0.5332 -0.46606 2008 6 11 54628 0.1384 0.5318 -0.46684 2008 6 12 54629 0.1412 0.5304 -0.46751 2008 6 13 54630 0.1439 0.5290 -0.46801 2008 6 14 54631 0.1467 0.5275 -0.46836 2008 6 15 54632 0.1494 0.5260 -0.46853 2008 6 16 54633 0.1520 0.5244 -0.46854 2008 6 17 54634 0.1547 0.5228 -0.46835 2008 6 18 54635 0.1573 0.5212 -0.46803 2008 6 19 54636 0.1599 0.5195 -0.46765 2008 6 20 54637 0.1625 0.5178 -0.46734 2008 6 21 54638 0.1650 0.5160 -0.46711 2008 6 22 54639 0.1675 0.5142 -0.46704 2008 6 23 54640 0.1700 0.5124 -0.46715 2008 6 24 54641 0.1725 0.5105 -0.46746 2008 6 25 54642 0.1749 0.5086 -0.46797 2008 6 26 54643 0.1773 0.5067 -0.46861 2008 6 27 54644 0.1796 0.5047 -0.46932 2008 6 28 54645 0.1819 0.5027 -0.46995 2008 6 29 54646 0.1842 0.5006 -0.47034 2008 6 30 54647 0.1865 0.4985 -0.47046 2008 7 1 54648 0.1887 0.4964 -0.47037 2008 7 2 54649 0.1908 0.4942 -0.47011 2008 7 3 54650 0.1930 0.4920 -0.46980 2008 7 4 54651 0.1951 0.4898 -0.46959 2008 7 5 54652 0.1972 0.4875 -0.46960 2008 7 6 54653 0.1992 0.4853 -0.46984 2008 7 7 54654 0.2012 0.4829 -0.47031 2008 7 8 54655 0.2031 0.4806 -0.47083 2008 7 9 54656 0.2050 0.4782 -0.47134 2008 7 10 54657 0.2069 0.4758 -0.47171 2008 7 11 54658 0.2087 0.4733 -0.47195 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) 54274 -59.81 .14 -6.77 .34 54275 -59.88 .10 -6.85 .34 54276 -59.98 .10 -6.84 .34 54277 -60.18 .74 -6.86 .34 54278 -60.43 .26 -7.01 .20 54279 -60.68 .26 -7.21 .20 54280 -60.91 .26 -7.30 .20 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 54274 0.019 0.056 -0.381 0.340 54275 -0.009 0.040 -0.408 0.340 54276 -0.025 0.040 -0.423 0.340 54277 -0.028 0.294 -0.431 0.340 54278 -0.020 0.103 -0.445 0.200 54279 -0.006 0.103 -0.450 0.200 54280 0.002 0.103 -0.447 0.200 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.