********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 17 August 2006 Vol. XIX No. 033 ______________________________________________________________________ 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 27 April 2006 at 0000 UTC Beginning 1 January 2006: TAI-UTC(BIPM) = 33.000 000 seconds ********************************************************************** * No leap second will be introduced into UTC on December 31, 2006. * * Last positive leap second introduced in UTC on December 31, 2005. * * * * See notice at the end of this Bulletin A for more details. * ********************************************************************** ________________________________________________________________________ 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 6 8 11 53958 .10705 .00002 .26149 .00006 .179509 .000012 6 8 12 53959 .10607 .00002 .26055 .00006 .178461 .000013 6 8 13 53960 .10519 .00002 .25972 .00005 .177353 .000014 6 8 14 53961 .10443 .00001 .25907 .00005 .176380 .000013 6 8 15 53962 .10349 .00001 .25863 .00005 .175673 .000013 6 8 16 53963 .10219 .00001 .25826 .00005 .175273 .000013 6 8 17 53964 .10068 .00001 .25779 .00005 .175129 .000011 _______________________________________________________________________ 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 = .0525 + .1717 cos A + .0505 sin A - .1199 cos C - .1558 sin C y = .3536 + .0517 cos A - .1510 sin A - .1558 cos C + .1199 sin C UT1-UTC = .1224 - .00059 (MJD - 53969) - (UT2-UT1) where A = 2*pi*(MJD-53964)/365.25 and C = 2*pi*(MJD-53964)/435. TAI-UTC(MJD 53965) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-53964)**0.80 S t = 0.00025 (MJD-53964)**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) 2006 8 18 53965 0.0992 0.2572 0.17520 2006 8 19 53966 0.0977 0.2565 0.17535 2006 8 20 53967 0.0963 0.2558 0.17545 2006 8 21 53968 0.0950 0.2551 0.17541 2006 8 22 53969 0.0936 0.2543 0.17520 2006 8 23 53970 0.0922 0.2535 0.17481 2006 8 24 53971 0.0909 0.2527 0.17427 2006 8 25 53972 0.0895 0.2519 0.17359 2006 8 26 53973 0.0881 0.2511 0.17282 2006 8 27 53974 0.0868 0.2503 0.17202 2006 8 28 53975 0.0853 0.2495 0.17127 2006 8 29 53976 0.0839 0.2487 0.17061 2006 8 30 53977 0.0825 0.2480 0.17008 2006 8 31 53978 0.0810 0.2472 0.16968 2006 9 1 53979 0.0795 0.2465 0.16942 2006 9 2 53980 0.0780 0.2458 0.16925 2006 9 3 53981 0.0765 0.2451 0.16910 2006 9 4 53982 0.0749 0.2444 0.16886 2006 9 5 53983 0.0733 0.2437 0.16839 2006 9 6 53984 0.0717 0.2431 0.16758 2006 9 7 53985 0.0701 0.2425 0.16637 2006 9 8 53986 0.0684 0.2419 0.16484 2006 9 9 53987 0.0667 0.2414 0.16313 2006 9 10 53988 0.0650 0.2408 0.16145 2006 9 11 53989 0.0632 0.2403 0.16000 2006 9 12 53990 0.0615 0.2399 0.15886 2006 9 13 53991 0.0597 0.2394 0.15804 2006 9 14 53992 0.0578 0.2390 0.15744 2006 9 15 53993 0.0560 0.2386 0.15693 2006 9 16 53994 0.0541 0.2382 0.15641 2006 9 17 53995 0.0522 0.2379 0.15578 2006 9 18 53996 0.0503 0.2376 0.15499 2006 9 19 53997 0.0483 0.2373 0.15400 2006 9 20 53998 0.0464 0.2371 0.15284 2006 9 21 53999 0.0444 0.2369 0.15152 2006 9 22 54000 0.0424 0.2367 0.15010 2006 9 23 54001 0.0403 0.2365 0.14865 2006 9 24 54002 0.0383 0.2364 0.14725 2006 9 25 54003 0.0362 0.2363 0.14595 2006 9 26 54004 0.0341 0.2362 0.14483 2006 9 27 54005 0.0320 0.2362 0.14388 2006 9 28 54006 0.0299 0.2362 0.14312 2006 9 29 54007 0.0278 0.2362 0.14249 2006 9 30 54008 0.0256 0.2363 0.14192 2006 10 1 54009 0.0234 0.2364 0.14131 2006 10 2 54010 0.0212 0.2365 0.14054 2006 10 3 54011 0.0190 0.2367 0.13950 2006 10 4 54012 0.0168 0.2369 0.13810 2006 10 5 54013 0.0146 0.2371 0.13637 2006 10 6 54014 0.0123 0.2374 0.13440 2006 10 7 54015 0.0101 0.2377 0.13236 2006 10 8 54016 0.0079 0.2380 0.13047 2006 10 9 54017 0.0056 0.2384 0.12887 2006 10 10 54018 0.0033 0.2388 0.12760 2006 10 11 54019 0.0010 0.2392 0.12663 2006 10 12 54020 -0.0013 0.2397 0.12585 2006 10 13 54021 -0.0036 0.2402 0.12512 2006 10 14 54022 -0.0059 0.2408 0.12435 2006 10 15 54023 -0.0083 0.2413 0.12344 2006 10 16 54024 -0.0106 0.2419 0.12236 2006 10 17 54025 -0.0129 0.2426 0.12111 2006 10 18 54026 -0.0152 0.2433 0.11971 2006 10 19 54027 -0.0176 0.2440 0.11819 2006 10 20 54028 -0.0199 0.2448 0.11662 2006 10 21 54029 -0.0223 0.2456 0.11508 2006 10 22 54030 -0.0246 0.2464 0.11362 2006 10 23 54031 -0.0269 0.2473 0.11232 2006 10 24 54032 -0.0293 0.2482 0.11119 2006 10 25 54033 -0.0316 0.2491 0.11025 2006 10 26 54034 -0.0339 0.2501 0.10947 2006 10 27 54035 -0.0362 0.2511 0.10878 2006 10 28 54036 -0.0385 0.2521 0.10811 2006 10 29 54037 -0.0408 0.2532 0.10733 2006 10 30 54038 -0.0431 0.2543 0.10635 2006 10 31 54039 -0.0454 0.2555 0.10508 2006 11 1 54040 -0.0477 0.2567 0.10350 2006 11 2 54041 -0.0500 0.2579 0.10167 2006 11 3 54042 -0.0522 0.2592 0.09972 2006 11 4 54043 -0.0545 0.2605 0.09782 2006 11 5 54044 -0.0567 0.2618 0.09614 2006 11 6 54045 -0.0589 0.2632 0.09479 2006 11 7 54046 -0.0612 0.2646 0.09377 2006 11 8 54047 -0.0633 0.2660 0.09303 2006 11 9 54048 -0.0655 0.2675 0.09243 2006 11 10 54049 -0.0677 0.2690 0.09184 2006 11 11 54050 -0.0698 0.2705 0.09117 2006 11 12 54051 -0.0719 0.2721 0.09036 2006 11 13 54052 -0.0740 0.2737 0.08939 2006 11 14 54053 -0.0761 0.2753 0.08829 2006 11 15 54054 -0.0781 0.2770 0.08707 2006 11 16 54055 -0.0802 0.2787 0.08579 2006 11 17 54056 -0.0822 0.2805 0.08452 2006 11 18 54057 -0.0841 0.2822 0.08332 2006 11 19 54058 -0.0861 0.2840 0.08225 2006 11 20 54059 -0.0880 0.2859 0.08135 2006 11 21 54060 -0.0899 0.2877 0.08065 2006 11 22 54061 -0.0918 0.2896 0.08011 2006 11 23 54062 -0.0936 0.2916 0.07968 2006 11 24 54063 -0.0954 0.2935 0.07928 2006 11 25 54064 -0.0972 0.2955 0.07881 2006 11 26 54065 -0.0990 0.2975 0.07816 2006 11 27 54066 -0.1007 0.2996 0.07726 2006 11 28 54067 -0.1024 0.3016 0.07608 2006 11 29 54068 -0.1040 0.3037 0.07465 2006 11 30 54069 -0.1056 0.3059 0.07309 2006 12 1 54070 -0.1072 0.3080 0.07140 2006 12 2 54071 -0.1087 0.3102 0.06987 2006 12 3 54072 -0.1102 0.3124 0.06860 2006 12 4 54073 -0.1117 0.3146 0.06766 2006 12 5 54074 -0.1131 0.3169 0.06698 2006 12 6 54075 -0.1145 0.3192 0.06649 2006 12 7 54076 -0.1158 0.3215 0.06605 2006 12 8 54077 -0.1171 0.3238 0.06554 2006 12 9 54078 -0.1184 0.3261 0.06489 2006 12 10 54079 -0.1196 0.3285 0.06408 2006 12 11 54080 -0.1208 0.3309 0.06312 2006 12 12 54081 -0.1219 0.3333 0.06204 2006 12 13 54082 -0.1230 0.3357 0.06090 2006 12 14 54083 -0.1240 0.3382 0.05975 2006 12 15 54084 -0.1250 0.3406 0.05867 2006 12 16 54085 -0.1260 0.3431 0.05770 2006 12 17 54086 -0.1269 0.3456 0.05690 2006 12 18 54087 -0.1277 0.3481 0.05628 2006 12 19 54088 -0.1285 0.3507 0.05584 2006 12 20 54089 -0.1293 0.3532 0.05553 2006 12 21 54090 -0.1300 0.3558 0.05527 2006 12 22 54091 -0.1307 0.3584 0.05496 2006 12 23 54092 -0.1313 0.3610 0.05449 2006 12 24 54093 -0.1318 0.3636 0.05378 2006 12 25 54094 -0.1323 0.3662 0.05279 2006 12 26 54095 -0.1328 0.3688 0.05156 2006 12 27 54096 -0.1332 0.3714 0.05019 2006 12 28 54097 -0.1336 0.3741 0.04881 2006 12 29 54098 -0.1339 0.3767 0.04757 2006 12 30 54099 -0.1341 0.3794 0.04656 2006 12 31 54100 -0.1343 0.3820 0.04584 2007 1 1 54101 -0.1345 0.3847 0.04539 2007 1 2 54102 -0.1346 0.3874 0.04514 2007 1 3 54103 -0.1346 0.3901 0.04497 2007 1 4 54104 -0.1346 0.3927 0.04477 2007 1 5 54105 -0.1346 0.3954 0.04444 2007 1 6 54106 -0.1344 0.3981 0.04393 2007 1 7 54107 -0.1343 0.4008 0.04326 2007 1 8 54108 -0.1341 0.4035 0.04244 2007 1 9 54109 -0.1338 0.4062 0.04154 2007 1 10 54110 -0.1334 0.4089 0.04061 2007 1 11 54111 -0.1331 0.4116 0.03972 2007 1 12 54112 -0.1326 0.4142 0.03893 2007 1 13 54113 -0.1321 0.4169 0.03829 2007 1 14 54114 -0.1316 0.4196 0.03781 2007 1 15 54115 -0.1310 0.4223 0.03751 2007 1 16 54116 -0.1304 0.4249 0.03735 2007 1 17 54117 -0.1297 0.4276 0.03725 2007 1 18 54118 -0.1289 0.4302 0.03713 2007 1 19 54119 -0.1281 0.4329 0.03687 2007 1 20 54120 -0.1272 0.4355 0.03636 2007 1 21 54121 -0.1263 0.4381 0.03555 2007 1 22 54122 -0.1254 0.4408 0.03445 2007 1 23 54123 -0.1243 0.4434 0.03317 2007 1 24 54124 -0.1233 0.4459 0.03185 2007 1 25 54125 -0.1221 0.4485 0.03064 2007 1 26 54126 -0.1210 0.4511 0.02967 2007 1 27 54127 -0.1197 0.4536 0.02900 2007 1 28 54128 -0.1185 0.4562 0.02859 2007 1 29 54129 -0.1171 0.4587 0.02840 2007 1 30 54130 -0.1158 0.4612 0.02829 2007 1 31 54131 -0.1143 0.4637 0.02817 2007 2 1 54132 -0.1129 0.4661 0.02792 2007 2 2 54133 -0.1113 0.4686 0.02750 2007 2 3 54134 -0.1098 0.4710 0.02688 2007 2 4 54135 -0.1082 0.4734 0.02609 2007 2 5 54136 -0.1065 0.4758 0.02517 2007 2 6 54137 -0.1048 0.4782 0.02419 2007 2 7 54138 -0.1030 0.4805 0.02321 2007 2 8 54139 -0.1012 0.4828 0.02230 2007 2 9 54140 -0.0994 0.4851 0.02151 2007 2 10 54141 -0.0975 0.4874 0.02086 2007 2 11 54142 -0.0955 0.4896 0.02035 2007 2 12 54143 -0.0935 0.4918 0.01997 2007 2 13 54144 -0.0915 0.4940 0.01966 2007 2 14 54145 -0.0894 0.4962 0.01933 2007 2 15 54146 -0.0873 0.4983 0.01888 2007 2 16 54147 -0.0851 0.5004 0.01817 2007 2 17 54148 -0.0829 0.5025 0.01714 2007 2 18 54149 -0.0807 0.5045 0.01578 2007 2 19 54150 -0.0784 0.5066 0.01415 2007 2 20 54151 -0.0761 0.5085 0.01244 2007 2 21 54152 -0.0738 0.5105 0.01082 2007 2 22 54153 -0.0714 0.5124 0.00946 2007 2 23 54154 -0.0689 0.5143 0.00845 2007 2 24 54155 -0.0664 0.5162 0.00778 2007 2 25 54156 -0.0639 0.5180 0.00736 2007 2 26 54157 -0.0614 0.5198 0.00706 2007 2 27 54158 -0.0588 0.5216 0.00675 2007 2 28 54159 -0.0561 0.5234 0.00633 2007 3 1 54160 -0.0535 0.5251 0.00574 2007 3 2 54161 -0.0508 0.5267 0.00493 2007 3 3 54162 -0.0481 0.5284 0.00394 2007 3 4 54163 -0.0453 0.5300 0.00279 2007 3 5 54164 -0.0425 0.5315 0.00156 2007 3 6 54165 -0.0397 0.5330 0.00031 2007 3 7 54166 -0.0369 0.5345 -0.00089 2007 3 8 54167 -0.0340 0.5359 -0.00199 2007 3 9 54168 -0.0311 0.5373 -0.00296 2007 3 10 54169 -0.0282 0.5387 -0.00376 2007 3 11 54170 -0.0253 0.5400 -0.00442 2007 3 12 54171 -0.0223 0.5413 -0.00495 2007 3 13 54172 -0.0193 0.5425 -0.00545 2007 3 14 54173 -0.0163 0.5437 -0.00599 2007 3 15 54174 -0.0132 0.5449 -0.00671 2007 3 16 54175 -0.0102 0.5460 -0.00772 2007 3 17 54176 -0.0071 0.5470 -0.00910 2007 3 18 54177 -0.0040 0.5480 -0.01079 2007 3 19 54178 -0.0009 0.5490 -0.01267 2007 3 20 54179 0.0023 0.5499 -0.01451 2007 3 21 54180 0.0054 0.5508 -0.01610 2007 3 22 54181 0.0086 0.5517 -0.01731 2007 3 23 54182 0.0118 0.5525 -0.01812 2007 3 24 54183 0.0150 0.5532 -0.01856 2007 3 25 54184 0.0182 0.5539 -0.01878 2007 3 26 54185 0.0215 0.5546 -0.01896 2007 3 27 54186 0.0247 0.5552 -0.01914 2007 3 28 54187 0.0280 0.5558 -0.01944 2007 3 29 54188 0.0313 0.5563 -0.01999 2007 3 30 54189 0.0345 0.5568 -0.02075 2007 3 31 54190 0.0378 0.5572 -0.02161 2007 4 1 54191 0.0411 0.5576 -0.02256 2007 4 2 54192 0.0444 0.5579 -0.02354 2007 4 3 54193 0.0478 0.5582 -0.02448 2007 4 4 54194 0.0511 0.5584 -0.02534 2007 4 5 54195 0.0544 0.5586 -0.02603 2007 4 6 54196 0.0578 0.5587 -0.02653 2007 4 7 54197 0.0611 0.5588 -0.02684 2007 4 8 54198 0.0644 0.5589 -0.02699 2007 4 9 54199 0.0678 0.5589 -0.02702 2007 4 10 54200 0.0711 0.5588 -0.02710 2007 4 11 54201 0.0745 0.5587 -0.02735 2007 4 12 54202 0.0778 0.5586 -0.02787 2007 4 13 54203 0.0812 0.5584 -0.02871 2007 4 14 54204 0.0845 0.5581 -0.02988 2007 4 15 54205 0.0879 0.5578 -0.03132 2007 4 16 54206 0.0912 0.5575 -0.03299 2007 4 17 54207 0.0946 0.5571 -0.03458 2007 4 18 54208 0.0979 0.5566 -0.03598 2007 4 19 54209 0.1013 0.5561 -0.03704 2007 4 20 54210 0.1046 0.5556 -0.03776 2007 4 21 54211 0.1079 0.5550 -0.03824 2007 4 22 54212 0.1112 0.5544 -0.03860 2007 4 23 54213 0.1146 0.5537 -0.03899 2007 4 24 54214 0.1179 0.5529 -0.03947 2007 4 25 54215 0.1212 0.5521 -0.04006 2007 4 26 54216 0.1245 0.5513 -0.04082 2007 4 27 54217 0.1277 0.5504 -0.04169 2007 4 28 54218 0.1310 0.5495 -0.04264 2007 4 29 54219 0.1343 0.5485 -0.04359 2007 4 30 54220 0.1375 0.5475 -0.04442 2007 5 1 54221 0.1407 0.5464 -0.04514 2007 5 2 54222 0.1439 0.5453 -0.04566 2007 5 3 54223 0.1471 0.5441 -0.04591 2007 5 4 54224 0.1503 0.5429 -0.04590 2007 5 5 54225 0.1535 0.5416 -0.04572 2007 5 6 54226 0.1567 0.5403 -0.04544 2007 5 7 54227 0.1598 0.5389 -0.04512 2007 5 8 54228 0.1629 0.5375 -0.04490 2007 5 9 54229 0.1660 0.5360 -0.04483 2007 5 10 54230 0.1691 0.5345 -0.04507 2007 5 11 54231 0.1722 0.5330 -0.04570 2007 5 12 54232 0.1752 0.5314 -0.04657 2007 5 13 54233 0.1783 0.5297 -0.04759 2007 5 14 54234 0.1813 0.5280 -0.04862 2007 5 15 54235 0.1843 0.5263 -0.04949 2007 5 16 54236 0.1872 0.5245 -0.05011 2007 5 17 54237 0.1902 0.5226 -0.05043 2007 5 18 54238 0.1931 0.5208 -0.05046 2007 5 19 54239 0.1960 0.5188 -0.05032 2007 5 20 54240 0.1989 0.5169 -0.05014 2007 5 21 54241 0.2017 0.5149 -0.05007 2007 5 22 54242 0.2045 0.5128 -0.05017 2007 5 23 54243 0.2073 0.5107 -0.05047 2007 5 24 54244 0.2101 0.5086 -0.05090 2007 5 25 54245 0.2128 0.5064 -0.05136 2007 5 26 54246 0.2155 0.5042 -0.05175 2007 5 27 54247 0.2182 0.5019 -0.05216 2007 5 28 54248 0.2208 0.4996 -0.05246 2007 5 29 54249 0.2235 0.4972 -0.05259 2007 5 30 54250 0.2260 0.4948 -0.05255 2007 5 31 54251 0.2286 0.4924 -0.05233 2007 6 1 54252 0.2311 0.4899 -0.05192 2007 6 2 54253 0.2336 0.4874 -0.05142 2007 6 3 54254 0.2361 0.4848 -0.05084 2007 6 4 54255 0.2385 0.4822 -0.05029 2007 6 5 54256 0.2409 0.4796 -0.04974 2007 6 6 54257 0.2432 0.4769 -0.04939 2007 6 7 54258 0.2456 0.4742 -0.04927 2007 6 8 54259 0.2478 0.4715 -0.04941 2007 6 9 54260 0.2501 0.4687 -0.04969 2007 6 10 54261 0.2523 0.4659 -0.05011 2007 6 11 54262 0.2545 0.4630 -0.05043 2007 6 12 54263 0.2566 0.4601 -0.05052 2007 6 13 54264 0.2587 0.4572 -0.05032 2007 6 14 54265 0.2607 0.4542 -0.04981 2007 6 15 54266 0.2627 0.4512 -0.04905 2007 6 16 54267 0.2647 0.4482 -0.04813 2007 6 17 54268 0.2666 0.4451 -0.04725 2007 6 18 54269 0.2685 0.4421 -0.04648 2007 6 19 54270 0.2704 0.4389 -0.04593 2007 6 20 54271 0.2722 0.4358 -0.04561 2007 6 21 54272 0.2739 0.4326 -0.04541 2007 6 22 54273 0.2756 0.4294 -0.04527 2007 6 23 54274 0.2773 0.4261 -0.04510 2007 6 24 54275 0.2789 0.4228 -0.04481 2007 6 25 54276 0.2805 0.4195 -0.04436 2007 6 26 54277 0.2820 0.4162 -0.04368 2007 6 27 54278 0.2835 0.4129 -0.04274 2007 6 28 54279 0.2850 0.4095 -0.04158 2007 6 29 54280 0.2864 0.4061 -0.04029 2007 6 30 54281 0.2877 0.4026 -0.03895 2007 7 1 54282 0.2890 0.3992 -0.03760 2007 7 2 54283 0.2902 0.3957 -0.03640 2007 7 3 54284 0.2914 0.3922 -0.03546 2007 7 4 54285 0.2925 0.3887 -0.03483 2007 7 5 54286 0.2936 0.3851 -0.03447 2007 7 6 54287 0.2947 0.3816 -0.03432 2007 7 7 54288 0.2956 0.3780 -0.03424 2007 7 8 54289 0.2966 0.3744 -0.03400 2007 7 9 54290 0.2974 0.3708 -0.03352 2007 7 10 54291 0.2983 0.3671 -0.03280 2007 7 11 54292 0.2990 0.3635 -0.03184 2007 7 12 54293 0.2997 0.3598 -0.03068 2007 7 13 54294 0.3004 0.3561 -0.02943 2007 7 14 54295 0.3010 0.3524 -0.02816 2007 7 15 54296 0.3015 0.3487 -0.02705 2007 7 16 54297 0.3020 0.3450 -0.02612 2007 7 17 54298 0.3025 0.3413 -0.02539 2007 7 18 54299 0.3028 0.3375 -0.02487 2007 7 19 54300 0.3031 0.3338 -0.02446 2007 7 20 54301 0.3034 0.3300 -0.02411 2007 7 21 54302 0.3036 0.3262 -0.02374 2007 7 22 54303 0.3037 0.3225 -0.02332 2007 7 23 54304 0.3038 0.3187 -0.02278 2007 7 24 54305 0.3038 0.3149 -0.02210 2007 7 25 54306 0.3038 0.3111 -0.02127 2007 7 26 54307 0.3037 0.3073 -0.02029 2007 7 27 54308 0.3035 0.3035 -0.01924 2007 7 28 54309 0.3033 0.2997 -0.01818 2007 7 29 54310 0.3030 0.2959 -0.01719 2007 7 30 54311 0.3027 0.2921 -0.01643 2007 7 31 54312 0.3022 0.2883 -0.01597 2007 8 1 54313 0.3018 0.2845 -0.01575 2007 8 2 54314 0.3012 0.2807 -0.01576 2007 8 3 54315 0.3006 0.2769 -0.01593 2007 8 4 54316 0.3000 0.2731 -0.01608 2007 8 5 54317 0.2992 0.2694 -0.01606 2007 8 6 54318 0.2984 0.2656 -0.01573 2007 8 7 54319 0.2976 0.2618 -0.01503 2007 8 8 54320 0.2966 0.2581 -0.01403 2007 8 9 54321 0.2957 0.2543 -0.01287 2007 8 10 54322 0.2946 0.2506 -0.01174 2007 8 11 54323 0.2935 0.2469 -0.01064 2007 8 12 54324 0.2923 0.2432 -0.00964 2007 8 13 54325 0.2911 0.2395 -0.00880 2007 8 14 54326 0.2898 0.2358 -0.00814 2007 8 15 54327 0.2884 0.2321 -0.00763 2007 8 16 54328 0.2869 0.2285 -0.00726 2007 8 17 54329 0.2854 0.2249 -0.00695 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) 53945 -63.35 .23 -5.08 .34 53946 -63.59 .19 -5.14 .34 53947 -63.74 .19 -5.21 .34 53948 -63.92 .13 -5.28 .34 53949 -64.33 .17 -5.50 .34 53950 -64.92 .17 -5.87 .34 53951 -65.33 .17 -6.19 .34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 53945 -0.043 0.091 -0.246 0.340 53946 -0.063 0.076 -0.249 0.340 53947 -0.082 0.076 -0.246 0.340 53948 -0.096 0.052 -0.233 0.340 53949 -0.109 0.068 -0.252 0.340 53950 -0.111 0.068 -0.282 0.340 53951 -0.092 0.068 -0.292 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. ************************************************************************** Important Notices - Important Notices - Important Notices ************************************************************************** A positive leap second was introduced in UTC on 31 December 2005. The sequence of dates of the UTC second markers will be: 2005 December 31, 23h 59m 59s 2005 December 31, 23h 59m 60s 2006 January 1, 0h 0m 0s The difference between UTC and the International Atomic Time (TAI) is: from 1999 January 1, 0h UTC, to 2006 January 1 0h UTC : UTC-TAI = - 32s from 2006 January 1, 0h UTC, until further notice : UTC-TAI = - 33s ************************************************************************** Important Notice - IAU 2000 Resolution Compliancy Information ************************************************************************** Resolutions passed at the 24th General Assembly of the International Astronomical Union (IAU) recommend the implementation of a number of new procedures concerning the transformation between the celestial and terrestrial reference systems. Information regarding these procedures is available in Chapter 5 of the IERS Conventions 2003 available at . With these resolutions, beginning on 1 January 2003, IERS Bulletins A and B will publish new products in addition to those already published. These products will include the celestial pole offsets X_obs-X_IAU2000A and Y_obs-Y_IAU2000A where X_obs and Y_obs are the observed X, Y coordinates of the Celestial Intermediate Pole in the Geocentric Celestial Reference System, and X_IAU2000A and Y_IAU2000A are the celestial pole coordinates provided by using the IAU2000A Precession-Nutation theory. It is expected that Celestial Pole offsets related to the IAU1980 Nutation Theory will continue to be published through 15 January 2006. The new celestial pole offsets related to the new IAU2000A Precession-Nutation theory will be produced in a separate data file as well as appended to to this file. ************************************************************************** Important Notice - IAU 2000 Resolution Compliancy Information **************************************************************************