********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 7 June 2007 Vol. XX No. 023 ______________________________________________________________________ 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. 024, on 14 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 6 1 54252 .14636 .00009 .46180 .00009 -.143934 .000011 7 6 2 54253 .14918 .00009 .46018 .00009 -.144213 .000011 7 6 3 54254 .15163 .00009 .45862 .00010 -.144370 .000012 7 6 4 54255 .15392 .00009 .45703 .00010 -.144560 .000014 7 6 5 54256 .15642 .00009 .45562 .00010 -.144928 .000015 7 6 6 54257 .15874 .00009 .45433 .00010 -.145516 .000048 7 6 7 54258 .16085 .00010 .45282 .00010 -.146348 .000057 IERS Final Values MJD x y UT1-UTC " " s 7 4 5 54195 .0333 .4829 -.07143 7 4 6 54196 .0358 .4839 -.07278 7 4 7 54197 .0382 .4849 -.07402 7 4 8 54198 .0401 .4857 -.07524 7 4 9 54199 .0415 .4864 -.07644 7 4 10 54200 .0427 .4870 -.07764 7 4 11 54201 .0441 .4875 -.07890 7 4 12 54202 .0457 .4881 -.08028 7 4 13 54203 .0471 .4886 -.08186 7 4 14 54204 .0488 .4889 -.08374 7 4 15 54205 .0505 .4893 -.08589 7 4 16 54206 .0523 .4898 -.08815 7 4 17 54207 .0544 .4901 -.09042 7 4 18 54208 .0564 .4901 -.09243 7 4 19 54209 .0582 .4900 -.09408 7 4 20 54210 .0599 .4901 -.09532 7 4 21 54211 .0614 .4902 -.09624 7 4 22 54212 .0626 .4901 -.09707 7 4 23 54213 .0638 .4901 -.09788 7 4 24 54214 .0653 .4901 -.09881 7 4 25 54215 .0669 .4901 -.09982 7 4 26 54216 .0689 .4903 -.10101 7 4 27 54217 .0711 .4907 -.10234 7 4 28 54218 .0731 .4909 -.10376 7 4 29 54219 .0753 .4909 -.10525 7 4 30 54220 .0772 .4909 -.10669 7 5 1 54221 .0792 .4908 -.10806 7 5 2 54222 .0809 .4907 -.10928 7 5 3 54223 .0828 .4903 -.11037 7 5 4 54224 .0852 .4896 -.11134 _______________________________________________________________________ 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 = .0600 - .0283 cos A + .0845 sin A + .1323 cos C + .0259 sin C y = .3463 + .0777 cos A + .0230 sin A + .0259 cos C - .1323 sin C UT1-UTC = -.1167 - .00097 (MJD - 54263) - (UT2-UT1) where A = 2*pi*(MJD-54258)/365.25 and C = 2*pi*(MJD-54258)/435. TAI-UTC(MJD 54259) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-54258)**0.80 S t = 0.00025 (MJD-54258)**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 8 54259 0.1628 0.4513 -0.14745 2007 6 9 54260 0.1647 0.4496 -0.14871 2007 6 10 54261 0.1665 0.4478 -0.15000 2007 6 11 54262 0.1682 0.4459 -0.15117 2007 6 12 54263 0.1699 0.4440 -0.15213 2007 6 13 54264 0.1716 0.4421 -0.15277 2007 6 14 54265 0.1732 0.4402 -0.15312 2007 6 15 54266 0.1747 0.4382 -0.15325 2007 6 16 54267 0.1762 0.4363 -0.15330 2007 6 17 54268 0.1777 0.4343 -0.15337 2007 6 18 54269 0.1792 0.4323 -0.15360 2007 6 19 54270 0.1806 0.4302 -0.15404 2007 6 20 54271 0.1820 0.4282 -0.15466 2007 6 21 54272 0.1833 0.4261 -0.15538 2007 6 22 54273 0.1846 0.4240 -0.15615 2007 6 23 54274 0.1859 0.4219 -0.15688 2007 6 24 54275 0.1872 0.4197 -0.15756 2007 6 25 54276 0.1884 0.4176 -0.15812 2007 6 26 54277 0.1896 0.4154 -0.15852 2007 6 27 54278 0.1907 0.4132 -0.15876 2007 6 28 54279 0.1918 0.4110 -0.15884 2007 6 29 54280 0.1929 0.4088 -0.15879 2007 6 30 54281 0.1939 0.4066 -0.15865 2007 7 1 54282 0.1949 0.4043 -0.15854 2007 7 2 54283 0.1958 0.4020 -0.15854 2007 7 3 54284 0.1968 0.3998 -0.15874 2007 7 4 54285 0.1977 0.3975 -0.15917 2007 7 5 54286 0.1985 0.3951 -0.15983 2007 7 6 54287 0.1993 0.3928 -0.16064 2007 7 7 54288 0.2001 0.3905 -0.16149 2007 7 8 54289 0.2008 0.3881 -0.16226 2007 7 9 54290 0.2015 0.3858 -0.16283 2007 7 10 54291 0.2021 0.3834 -0.16312 2007 7 11 54292 0.2028 0.3811 -0.16313 2007 7 12 54293 0.2033 0.3787 -0.16292 2007 7 13 54294 0.2039 0.3763 -0.16259 2007 7 14 54295 0.2043 0.3739 -0.16229 2007 7 15 54296 0.2048 0.3715 -0.16214 2007 7 16 54297 0.2052 0.3691 -0.16218 2007 7 17 54298 0.2056 0.3666 -0.16241 2007 7 18 54299 0.2059 0.3642 -0.16278 2007 7 19 54300 0.2062 0.3618 -0.16320 2007 7 20 54301 0.2065 0.3593 -0.16361 2007 7 21 54302 0.2067 0.3569 -0.16395 2007 7 22 54303 0.2068 0.3545 -0.16414 2007 7 23 54304 0.2070 0.3520 -0.16416 2007 7 24 54305 0.2070 0.3496 -0.16401 2007 7 25 54306 0.2071 0.3471 -0.16368 2007 7 26 54307 0.2071 0.3447 -0.16321 2007 7 27 54308 0.2070 0.3423 -0.16266 2007 7 28 54309 0.2070 0.3398 -0.16212 2007 7 29 54310 0.2068 0.3374 -0.16170 2007 7 30 54311 0.2067 0.3349 -0.16148 2007 7 31 54312 0.2065 0.3325 -0.16154 2007 8 1 54313 0.2062 0.3301 -0.16187 2007 8 2 54314 0.2059 0.3276 -0.16242 2007 8 3 54315 0.2056 0.3252 -0.16307 2007 8 4 54316 0.2052 0.3228 -0.16366 2007 8 5 54317 0.2048 0.3204 -0.16407 2007 8 6 54318 0.2044 0.3180 -0.16422 2007 8 7 54319 0.2039 0.3156 -0.16407 2007 8 8 54320 0.2034 0.3132 -0.16370 2007 8 9 54321 0.2028 0.3108 -0.16319 2007 8 10 54322 0.2022 0.3084 -0.16269 2007 8 11 54323 0.2015 0.3061 -0.16232 2007 8 12 54324 0.2008 0.3037 -0.16215 2007 8 13 54325 0.2001 0.3014 -0.16221 2007 8 14 54326 0.1993 0.2991 -0.16247 2007 8 15 54327 0.1985 0.2967 -0.16288 2007 8 16 54328 0.1976 0.2944 -0.16335 2007 8 17 54329 0.1967 0.2921 -0.16381 2007 8 18 54330 0.1958 0.2899 -0.16419 2007 8 19 54331 0.1948 0.2876 -0.16445 2007 8 20 54332 0.1938 0.2854 -0.16456 2007 8 21 54333 0.1927 0.2831 -0.16452 2007 8 22 54334 0.1916 0.2809 -0.16437 2007 8 23 54335 0.1905 0.2787 -0.16416 2007 8 24 54336 0.1893 0.2765 -0.16396 2007 8 25 54337 0.1881 0.2744 -0.16386 2007 8 26 54338 0.1869 0.2722 -0.16397 2007 8 27 54339 0.1856 0.2701 -0.16437 2007 8 28 54340 0.1843 0.2680 -0.16510 2007 8 29 54341 0.1829 0.2659 -0.16612 2007 8 30 54342 0.1815 0.2639 -0.16732 2007 8 31 54343 0.1801 0.2619 -0.16855 2007 9 1 54344 0.1787 0.2598 -0.16964 2007 9 2 54345 0.1772 0.2578 -0.17048 2007 9 3 54346 0.1756 0.2559 -0.17102 2007 9 4 54347 0.1740 0.2539 -0.17131 2007 9 5 54348 0.1724 0.2520 -0.17144 2007 9 6 54349 0.1708 0.2501 -0.17155 2007 9 7 54350 0.1691 0.2482 -0.17176 2007 9 8 54351 0.1674 0.2464 -0.17215 2007 9 9 54352 0.1657 0.2446 -0.17275 2007 9 10 54353 0.1639 0.2428 -0.17355 2007 9 11 54354 0.1621 0.2410 -0.17451 2007 9 12 54355 0.1603 0.2393 -0.17556 2007 9 13 54356 0.1584 0.2376 -0.17661 2007 9 14 54357 0.1565 0.2359 -0.17759 2007 9 15 54358 0.1546 0.2343 -0.17845 2007 9 16 54359 0.1527 0.2327 -0.17915 2007 9 17 54360 0.1507 0.2311 -0.17969 2007 9 18 54361 0.1487 0.2295 -0.18009 2007 9 19 54362 0.1466 0.2280 -0.18039 2007 9 20 54363 0.1446 0.2265 -0.18067 2007 9 21 54364 0.1425 0.2250 -0.18101 2007 9 22 54365 0.1404 0.2236 -0.18150 2007 9 23 54366 0.1382 0.2222 -0.18224 2007 9 24 54367 0.1360 0.2208 -0.18329 2007 9 25 54368 0.1338 0.2195 -0.18466 2007 9 26 54369 0.1316 0.2182 -0.18629 2007 9 27 54370 0.1294 0.2170 -0.18803 2007 9 28 54371 0.1271 0.2157 -0.18971 2007 9 29 54372 0.1248 0.2146 -0.19116 2007 9 30 54373 0.1225 0.2134 -0.19230 2007 10 1 54374 0.1202 0.2123 -0.19314 2007 10 2 54375 0.1178 0.2112 -0.19376 2007 10 3 54376 0.1154 0.2102 -0.19431 2007 10 4 54377 0.1131 0.2091 -0.19492 2007 10 5 54378 0.1106 0.2082 -0.19567 2007 10 6 54379 0.1082 0.2072 -0.19663 2007 10 7 54380 0.1058 0.2063 -0.19778 2007 10 8 54381 0.1033 0.2055 -0.19908 2007 10 9 54382 0.1008 0.2047 -0.20047 2007 10 10 54383 0.0983 0.2039 -0.20188 2007 10 11 54384 0.0958 0.2031 -0.20323 2007 10 12 54385 0.0933 0.2024 -0.20446 2007 10 13 54386 0.0907 0.2018 -0.20554 2007 10 14 54387 0.0882 0.2011 -0.20644 2007 10 15 54388 0.0856 0.2005 -0.20718 2007 10 16 54389 0.0830 0.2000 -0.20781 2007 10 17 54390 0.0804 0.1995 -0.20838 2007 10 18 54391 0.0778 0.1990 -0.20897 2007 10 19 54392 0.0752 0.1986 -0.20967 2007 10 20 54393 0.0726 0.1982 -0.21055 2007 10 21 54394 0.0700 0.1978 -0.21170 2007 10 22 54395 0.0673 0.1975 -0.21314 2007 10 23 54396 0.0647 0.1973 -0.21487 2007 10 24 54397 0.0620 0.1970 -0.21677 2007 10 25 54398 0.0594 0.1969 -0.21871 2007 10 26 54399 0.0567 0.1967 -0.22049 2007 10 27 54400 0.0541 0.1966 -0.22200 2007 10 28 54401 0.0514 0.1965 -0.22318 2007 10 29 54402 0.0487 0.1965 -0.22408 2007 10 30 54403 0.0460 0.1965 -0.22484 2007 10 31 54404 0.0434 0.1966 -0.22560 2007 11 1 54405 0.0407 0.1967 -0.22648 2007 11 2 54406 0.0380 0.1968 -0.22754 2007 11 3 54407 0.0353 0.1970 -0.22879 2007 11 4 54408 0.0326 0.1973 -0.23018 2007 11 5 54409 0.0300 0.1975 -0.23166 2007 11 6 54410 0.0273 0.1978 -0.23315 2007 11 7 54411 0.0246 0.1982 -0.23460 2007 11 8 54412 0.0220 0.1986 -0.23593 2007 11 9 54413 0.0193 0.1990 -0.23710 2007 11 10 54414 0.0167 0.1995 -0.23809 2007 11 11 54415 0.0140 0.2000 -0.23892 2007 11 12 54416 0.0114 0.2005 -0.23960 2007 11 13 54417 0.0087 0.2011 -0.24021 2007 11 14 54418 0.0061 0.2018 -0.24080 2007 11 15 54419 0.0035 0.2024 -0.24147 2007 11 16 54420 0.0009 0.2032 -0.24229 2007 11 17 54421 -0.0017 0.2039 -0.24331 2007 11 18 54422 -0.0043 0.2047 -0.24459 2007 11 19 54423 -0.0069 0.2055 -0.24612 2007 11 20 54424 -0.0094 0.2064 -0.24786 2007 11 21 54425 -0.0120 0.2073 -0.24967 2007 11 22 54426 -0.0145 0.2083 -0.25142 2007 11 23 54427 -0.0171 0.2093 -0.25296 2007 11 24 54428 -0.0196 0.2103 -0.25419 2007 11 25 54429 -0.0220 0.2114 -0.25513 2007 11 26 54430 -0.0245 0.2125 -0.25586 2007 11 27 54431 -0.0270 0.2136 -0.25653 2007 11 28 54432 -0.0294 0.2148 -0.25728 2007 11 29 54433 -0.0318 0.2160 -0.25820 2007 11 30 54434 -0.0342 0.2173 -0.25931 2007 12 1 54435 -0.0366 0.2186 -0.26059 2007 12 2 54436 -0.0390 0.2199 -0.26196 2007 12 3 54437 -0.0413 0.2213 -0.26335 2007 12 4 54438 -0.0436 0.2227 -0.26470 2007 12 5 54439 -0.0459 0.2241 -0.26594 2007 12 6 54440 -0.0482 0.2256 -0.26706 2007 12 7 54441 -0.0505 0.2271 -0.26802 2007 12 8 54442 -0.0527 0.2286 -0.26883 2007 12 9 54443 -0.0549 0.2302 -0.26954 2007 12 10 54444 -0.0571 0.2318 -0.27019 2007 12 11 54445 -0.0592 0.2334 -0.27085 2007 12 12 54446 -0.0613 0.2351 -0.27160 2007 12 13 54447 -0.0634 0.2368 -0.27250 2007 12 14 54448 -0.0655 0.2386 -0.27357 2007 12 15 54449 -0.0676 0.2403 -0.27485 2007 12 16 54450 -0.0696 0.2421 -0.27631 2007 12 17 54451 -0.0715 0.2440 -0.27792 2007 12 18 54452 -0.0735 0.2458 -0.27959 2007 12 19 54453 -0.0754 0.2477 -0.28120 2007 12 20 54454 -0.0773 0.2496 -0.28265 2007 12 21 54455 -0.0792 0.2516 -0.28383 2007 12 22 54456 -0.0810 0.2536 -0.28473 2007 12 23 54457 -0.0828 0.2556 -0.28538 2007 12 24 54458 -0.0846 0.2576 -0.28591 2007 12 25 54459 -0.0863 0.2597 -0.28645 2007 12 26 54460 -0.0880 0.2618 -0.28713 2007 12 27 54461 -0.0896 0.2639 -0.28798 2007 12 28 54462 -0.0913 0.2660 -0.28899 2007 12 29 54463 -0.0929 0.2682 -0.29010 2007 12 30 54464 -0.0944 0.2704 -0.29123 2007 12 31 54465 -0.0959 0.2726 -0.29230 2008 1 1 54466 -0.0974 0.2748 -0.29325 2008 1 2 54467 -0.0989 0.2771 -0.29402 2008 1 3 54468 -0.1003 0.2793 -0.29460 2008 1 4 54469 -0.1016 0.2816 -0.29495 2008 1 5 54470 -0.1030 0.2840 -0.29512 2008 1 6 54471 -0.1043 0.2863 -0.29516 2008 1 7 54472 -0.1055 0.2887 -0.29514 2008 1 8 54473 -0.1067 0.2910 -0.29520 2008 1 9 54474 -0.1079 0.2934 -0.29542 2008 1 10 54475 -0.1091 0.2958 -0.29588 2008 1 11 54476 -0.1102 0.2983 -0.29660 2008 1 12 54477 -0.1112 0.3007 -0.29753 2008 1 13 54478 -0.1122 0.3032 -0.29869 2008 1 14 54479 -0.1132 0.3057 -0.29997 2008 1 15 54480 -0.1141 0.3082 -0.30123 2008 1 16 54481 -0.1150 0.3107 -0.30239 2008 1 17 54482 -0.1159 0.3132 -0.30332 2008 1 18 54483 -0.1167 0.3157 -0.30406 2008 1 19 54484 -0.1174 0.3183 -0.30456 2008 1 20 54485 -0.1181 0.3208 -0.30491 2008 1 21 54486 -0.1188 0.3234 -0.30522 2008 1 22 54487 -0.1195 0.3260 -0.30562 2008 1 23 54488 -0.1200 0.3285 -0.30626 2008 1 24 54489 -0.1206 0.3311 -0.30716 2008 1 25 54490 -0.1211 0.3337 -0.30828 2008 1 26 54491 -0.1216 0.3364 -0.30954 2008 1 27 54492 -0.1220 0.3390 -0.31087 2008 1 28 54493 -0.1223 0.3416 -0.31211 2008 1 29 54494 -0.1227 0.3442 -0.31324 2008 1 30 54495 -0.1230 0.3468 -0.31419 2008 1 31 54496 -0.1232 0.3495 -0.31492 2008 2 1 54497 -0.1234 0.3521 -0.31545 2008 2 2 54498 -0.1235 0.3548 -0.31581 2008 2 3 54499 -0.1236 0.3574 -0.31611 2008 2 4 54500 -0.1237 0.3601 -0.31641 2008 2 5 54501 -0.1237 0.3627 -0.31683 2008 2 6 54502 -0.1237 0.3653 -0.31746 2008 2 7 54503 -0.1236 0.3680 -0.31836 2008 2 8 54504 -0.1235 0.3706 -0.31957 2008 2 9 54505 -0.1233 0.3733 -0.32109 2008 2 10 54506 -0.1231 0.3759 -0.32291 2008 2 11 54507 -0.1228 0.3785 -0.32480 2008 2 12 54508 -0.1225 0.3812 -0.32657 2008 2 13 54509 -0.1222 0.3838 -0.32813 2008 2 14 54510 -0.1218 0.3864 -0.32943 2008 2 15 54511 -0.1214 0.3890 -0.33051 2008 2 16 54512 -0.1209 0.3916 -0.33140 2008 2 17 54513 -0.1204 0.3942 -0.33218 2008 2 18 54514 -0.1198 0.3968 -0.33299 2008 2 19 54515 -0.1192 0.3994 -0.33398 2008 2 20 54516 -0.1185 0.4019 -0.33521 2008 2 21 54517 -0.1178 0.4045 -0.33666 2008 2 22 54518 -0.1171 0.4070 -0.33831 2008 2 23 54519 -0.1163 0.4096 -0.33996 2008 2 24 54520 -0.1155 0.4121 -0.34149 2008 2 25 54521 -0.1146 0.4146 -0.34289 2008 2 26 54522 -0.1137 0.4171 -0.34409 2008 2 27 54523 -0.1127 0.4196 -0.34508 2008 2 28 54524 -0.1117 0.4220 -0.34587 2008 2 29 54525 -0.1107 0.4245 -0.34650 2008 3 1 54526 -0.1096 0.4269 -0.34708 2008 3 2 54527 -0.1085 0.4293 -0.34764 2008 3 3 54528 -0.1073 0.4317 -0.34825 2008 3 4 54529 -0.1061 0.4341 -0.34904 2008 3 5 54530 -0.1048 0.4365 -0.35007 2008 3 6 54531 -0.1035 0.4388 -0.35136 2008 3 7 54532 -0.1022 0.4411 -0.35296 2008 3 8 54533 -0.1008 0.4434 -0.35482 2008 3 9 54534 -0.0994 0.4457 -0.35679 2008 3 10 54535 -0.0980 0.4479 -0.35876 2008 3 11 54536 -0.0965 0.4502 -0.36045 2008 3 12 54537 -0.0950 0.4524 -0.36182 2008 3 13 54538 -0.0934 0.4546 -0.36293 2008 3 14 54539 -0.0918 0.4567 -0.36384 2008 3 15 54540 -0.0901 0.4588 -0.36467 2008 3 16 54541 -0.0885 0.4610 -0.36554 2008 3 17 54542 -0.0867 0.4630 -0.36656 2008 3 18 54543 -0.0850 0.4651 -0.36779 2008 3 19 54544 -0.0832 0.4671 -0.36924 2008 3 20 54545 -0.0814 0.4691 -0.37080 2008 3 21 54546 -0.0795 0.4711 -0.37244 2008 3 22 54547 -0.0776 0.4730 -0.37408 2008 3 23 54548 -0.0757 0.4749 -0.37561 2008 3 24 54549 -0.0738 0.4768 -0.37704 2008 3 25 54550 -0.0718 0.4787 -0.37831 2008 3 26 54551 -0.0697 0.4805 -0.37938 2008 3 27 54552 -0.0677 0.4823 -0.38028 2008 3 28 54553 -0.0656 0.4840 -0.38105 2008 3 29 54554 -0.0635 0.4858 -0.38181 2008 3 30 54555 -0.0613 0.4874 -0.38263 2008 3 31 54556 -0.0592 0.4891 -0.38358 2008 4 1 54557 -0.0570 0.4907 -0.38471 2008 4 2 54558 -0.0547 0.4923 -0.38610 2008 4 3 54559 -0.0525 0.4939 -0.38775 2008 4 4 54560 -0.0502 0.4954 -0.38961 2008 4 5 54561 -0.0479 0.4969 -0.39165 2008 4 6 54562 -0.0455 0.4983 -0.39372 2008 4 7 54563 -0.0432 0.4997 -0.39566 2008 4 8 54564 -0.0408 0.5011 -0.39731 2008 4 9 54565 -0.0383 0.5024 -0.39862 2008 4 10 54566 -0.0359 0.5037 -0.39967 2008 4 11 54567 -0.0334 0.5050 -0.40062 2008 4 12 54568 -0.0310 0.5062 -0.40155 2008 4 13 54569 -0.0285 0.5074 -0.40260 2008 4 14 54570 -0.0259 0.5085 -0.40383 2008 4 15 54571 -0.0234 0.5096 -0.40524 2008 4 16 54572 -0.0208 0.5107 -0.40684 2008 4 17 54573 -0.0182 0.5117 -0.40855 2008 4 18 54574 -0.0156 0.5127 -0.41030 2008 4 19 54575 -0.0130 0.5137 -0.41199 2008 4 20 54576 -0.0104 0.5146 -0.41351 2008 4 21 54577 -0.0077 0.5154 -0.41482 2008 4 22 54578 -0.0050 0.5162 -0.41595 2008 4 23 54579 -0.0024 0.5170 -0.41686 2008 4 24 54580 0.0003 0.5178 -0.41759 2008 4 25 54581 0.0030 0.5185 -0.41821 2008 4 26 54582 0.0058 0.5191 -0.41882 2008 4 27 54583 0.0085 0.5197 -0.41952 2008 4 28 54584 0.0113 0.5203 -0.42043 2008 4 29 54585 0.0140 0.5208 -0.42154 2008 4 30 54586 0.0168 0.5213 -0.42293 2008 5 1 54587 0.0196 0.5217 -0.42456 2008 5 2 54588 0.0223 0.5221 -0.42642 2008 5 3 54589 0.0251 0.5225 -0.42842 2008 5 4 54590 0.0279 0.5228 -0.43039 2008 5 5 54591 0.0307 0.5231 -0.43217 2008 5 6 54592 0.0336 0.5233 -0.43362 2008 5 7 54593 0.0364 0.5235 -0.43474 2008 5 8 54594 0.0392 0.5236 -0.43564 2008 5 9 54595 0.0420 0.5237 -0.43649 2008 5 10 54596 0.0448 0.5238 -0.43735 2008 5 11 54597 0.0477 0.5238 -0.43833 2008 5 12 54598 0.0505 0.5237 -0.43946 2008 5 13 54599 0.0533 0.5237 -0.44083 2008 5 14 54600 0.0562 0.5235 -0.44235 2008 5 15 54601 0.0590 0.5234 -0.44393 2008 5 16 54602 0.0618 0.5232 -0.44547 2008 5 17 54603 0.0646 0.5229 -0.44697 2008 5 18 54604 0.0674 0.5226 -0.44830 2008 5 19 54605 0.0703 0.5223 -0.44946 2008 5 20 54606 0.0731 0.5219 -0.45042 2008 5 21 54607 0.0759 0.5215 -0.45115 2008 5 22 54608 0.0787 0.5210 -0.45177 2008 5 23 54609 0.0814 0.5205 -0.45236 2008 5 24 54610 0.0842 0.5199 -0.45293 2008 5 25 54611 0.0870 0.5193 -0.45356 2008 5 26 54612 0.0898 0.5187 -0.45430 2008 5 27 54613 0.0925 0.5180 -0.45520 2008 5 28 54614 0.0952 0.5172 -0.45626 2008 5 29 54615 0.0980 0.5165 -0.45743 2008 5 30 54616 0.1007 0.5157 -0.45865 2008 5 31 54617 0.1034 0.5148 -0.45986 2008 6 1 54618 0.1061 0.5139 -0.46084 2008 6 2 54619 0.1088 0.5130 -0.46150 2008 6 3 54620 0.1114 0.5120 -0.46177 2008 6 4 54621 0.1141 0.5110 -0.46177 2008 6 5 54622 0.1167 0.5099 -0.46162 2008 6 6 54623 0.1193 0.5088 -0.46148 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) 54239 -56.36 .26 -7.69 .34 54240 -55.71 .26 -7.93 .34 54241 -55.07 .26 -8.04 .34 54242 -54.85 .74 -7.85 .34 54243 -55.20 .74 -7.40 .12 54244 -55.79 .74 -6.98 .12 54245 -56.15 .74 -6.80 .12 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 54195 -55.0 -6.3 54196 -55.0 -6.5 54197 -54.9 -6.7 54198 -54.7 -6.8 54199 -54.5 -6.9 54200 -54.4 -7.1 54201 -54.3 -7.2 54202 -54.4 -7.3 54203 -54.6 -7.3 54204 -54.9 -7.1 54205 -55.2 -6.7 54206 -55.5 -6.4 54207 -55.8 -6.1 54208 -56.0 -6.1 54209 -56.2 -6.3 54210 -56.2 -6.8 54211 -56.1 -7.2 54212 -55.7 -7.6 54213 -55.3 -7.9 54214 -54.9 -7.9 54215 -54.7 -7.7 54216 -54.7 -7.4 54217 -54.7 -7.0 54218 -54.8 -6.6 54219 -54.9 -6.4 54220 -54.8 -6.5 54221 -54.7 -6.7 54222 -54.5 -7.2 54223 -54.5 -7.5 54224 -54.6 -7.7 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 54239 0.047 0.103 -0.362 0.340 54240 0.064 0.103 -0.394 0.340 54241 0.092 0.103 -0.438 0.340 54242 0.128 0.294 -0.452 0.340 54243 0.148 0.294 -0.408 0.120 54244 0.139 0.294 -0.348 0.120 54245 0.114 0.294 -0.317 0.120 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 54195 0.20 -0.32 54196 0.20 -0.30 54197 0.21 -0.32 54198 0.25 -0.20 54199 0.27 -0.10 54200 0.22 -0.28 54201 0.22 -0.47 54202 0.22 -0.57 54203 0.20 -0.36 54204 0.05 -0.03 54205 -0.17 0.09 54206 -0.26 -0.22 54207 -0.14 -0.38 54208 0.09 -0.39 54209 0.22 -0.26 54210 0.26 -0.35 54211 0.17 -0.31 54212 0.08 -0.27 54213 -0.02 -0.32 54214 0.03 -0.42 54215 0.16 -0.61 54216 0.27 -0.70 54217 0.30 -0.54 54218 0.21 -0.28 54219 0.10 -0.22 54220 0.10 -0.37 54221 0.13 -0.41 54222 0.23 -0.52 54223 0.27 -0.42 54224 0.25 -0.40 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.