********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 31 August 2006 Vol. XIX No. 035 ______________________________________________________________________ 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 25 53972 .09059 .00003 .25375 .00004 .173887 .000018 6 8 26 53973 .08969 .00003 .25368 .00004 .173180 .000019 6 8 27 53974 .08857 .00003 .25380 .00004 .172465 .000019 6 8 28 53975 .08717 .00002 .25384 .00004 .171762 .000018 6 8 29 53976 .08585 .00002 .25380 .00003 .171151 .000019 6 8 30 53977 .08462 .00001 .25384 .00004 .170671 .000016 6 8 31 53978 .08338 .00001 .25379 .00003 .170379 .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 = .0523 + .1780 cos A + .0122 sin A - .1432 cos C - .1286 sin C y = .3534 + .0174 cos A - .1539 sin A - .1286 cos C + .1432 sin C UT1-UTC = .1110 - .00062 (MJD - 53983) - (UT2-UT1) where A = 2*pi*(MJD-53978)/365.25 and C = 2*pi*(MJD-53978)/435. TAI-UTC(MJD 53979) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-53978)**0.80 S t = 0.00025 (MJD-53978)**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 9 1 53979 0.0821 0.2535 0.17027 2006 9 2 53980 0.0808 0.2532 0.17027 2006 9 3 53981 0.0794 0.2528 0.17027 2006 9 4 53982 0.0780 0.2524 0.17011 2006 9 5 53983 0.0764 0.2519 0.16971 2006 9 6 53984 0.0749 0.2514 0.16898 2006 9 7 53985 0.0732 0.2509 0.16792 2006 9 8 53986 0.0716 0.2504 0.16657 2006 9 9 53987 0.0699 0.2499 0.16506 2006 9 10 53988 0.0682 0.2494 0.16357 2006 9 11 53989 0.0664 0.2489 0.16231 2006 9 12 53990 0.0647 0.2484 0.16134 2006 9 13 53991 0.0629 0.2480 0.16069 2006 9 14 53992 0.0611 0.2475 0.16028 2006 9 15 53993 0.0592 0.2471 0.15998 2006 9 16 53994 0.0573 0.2467 0.15967 2006 9 17 53995 0.0555 0.2463 0.15928 2006 9 18 53996 0.0536 0.2459 0.15873 2006 9 19 53997 0.0516 0.2456 0.15799 2006 9 20 53998 0.0497 0.2453 0.15706 2006 9 21 53999 0.0477 0.2450 0.15596 2006 9 22 54000 0.0457 0.2447 0.15473 2006 9 23 54001 0.0437 0.2445 0.15344 2006 9 24 54002 0.0417 0.2443 0.15217 2006 9 25 54003 0.0397 0.2441 0.15100 2006 9 26 54004 0.0376 0.2440 0.14995 2006 9 27 54005 0.0356 0.2438 0.14905 2006 9 28 54006 0.0335 0.2438 0.14829 2006 9 29 54007 0.0314 0.2437 0.14763 2006 9 30 54008 0.0293 0.2437 0.14700 2006 10 1 54009 0.0271 0.2437 0.14631 2006 10 2 54010 0.0250 0.2437 0.14544 2006 10 3 54011 0.0228 0.2438 0.14429 2006 10 4 54012 0.0207 0.2439 0.14278 2006 10 5 54013 0.0185 0.2441 0.14091 2006 10 6 54014 0.0163 0.2442 0.13878 2006 10 7 54015 0.0141 0.2444 0.13657 2006 10 8 54016 0.0119 0.2447 0.13448 2006 10 9 54017 0.0096 0.2450 0.13266 2006 10 10 54018 0.0074 0.2453 0.13119 2006 10 11 54019 0.0051 0.2456 0.13002 2006 10 12 54020 0.0029 0.2460 0.12906 2006 10 13 54021 0.0006 0.2464 0.12816 2006 10 14 54022 -0.0017 0.2468 0.12723 2006 10 15 54023 -0.0039 0.2473 0.12619 2006 10 16 54024 -0.0062 0.2478 0.12501 2006 10 17 54025 -0.0085 0.2484 0.12367 2006 10 18 54026 -0.0108 0.2489 0.12219 2006 10 19 54027 -0.0131 0.2496 0.12062 2006 10 20 54028 -0.0154 0.2502 0.11901 2006 10 21 54029 -0.0177 0.2509 0.11743 2006 10 22 54030 -0.0200 0.2516 0.11592 2006 10 23 54031 -0.0223 0.2524 0.11456 2006 10 24 54032 -0.0246 0.2532 0.11337 2006 10 25 54033 -0.0269 0.2540 0.11236 2006 10 26 54034 -0.0292 0.2548 0.11149 2006 10 27 54035 -0.0315 0.2557 0.11070 2006 10 28 54036 -0.0337 0.2566 0.10991 2006 10 29 54037 -0.0360 0.2576 0.10901 2006 10 30 54038 -0.0383 0.2586 0.10788 2006 10 31 54039 -0.0406 0.2596 0.10646 2006 11 1 54040 -0.0428 0.2607 0.10471 2006 11 2 54041 -0.0451 0.2618 0.10270 2006 11 3 54042 -0.0473 0.2630 0.10056 2006 11 4 54043 -0.0495 0.2641 0.09846 2006 11 5 54044 -0.0518 0.2653 0.09658 2006 11 6 54045 -0.0540 0.2666 0.09503 2006 11 7 54046 -0.0562 0.2679 0.09380 2006 11 8 54047 -0.0583 0.2692 0.09283 2006 11 9 54048 -0.0605 0.2705 0.09200 2006 11 10 54049 -0.0626 0.2719 0.09118 2006 11 11 54050 -0.0648 0.2733 0.09026 2006 11 12 54051 -0.0669 0.2748 0.08921 2006 11 13 54052 -0.0690 0.2763 0.08800 2006 11 14 54053 -0.0710 0.2778 0.08665 2006 11 15 54054 -0.0731 0.2793 0.08521 2006 11 16 54055 -0.0751 0.2809 0.08372 2006 11 17 54056 -0.0771 0.2825 0.08225 2006 11 18 54057 -0.0791 0.2842 0.08086 2006 11 19 54058 -0.0811 0.2859 0.07962 2006 11 20 54059 -0.0830 0.2876 0.07855 2006 11 21 54060 -0.0849 0.2893 0.07768 2006 11 22 54061 -0.0868 0.2911 0.07698 2006 11 23 54062 -0.0886 0.2929 0.07640 2006 11 24 54063 -0.0904 0.2947 0.07584 2006 11 25 54064 -0.0922 0.2966 0.07522 2006 11 26 54065 -0.0940 0.2985 0.07442 2006 11 27 54066 -0.0957 0.3004 0.07338 2006 11 28 54067 -0.0974 0.3024 0.07206 2006 11 29 54068 -0.0991 0.3043 0.07052 2006 11 30 54069 -0.1007 0.3064 0.06885 2006 12 1 54070 -0.1023 0.3084 0.06719 2006 12 2 54071 -0.1038 0.3104 0.06569 2006 12 3 54072 -0.1054 0.3125 0.06448 2006 12 4 54073 -0.1069 0.3147 0.06359 2006 12 5 54074 -0.1083 0.3168 0.06298 2006 12 6 54075 -0.1097 0.3190 0.06255 2006 12 7 54076 -0.1111 0.3212 0.06217 2006 12 8 54077 -0.1124 0.3234 0.06172 2006 12 9 54078 -0.1137 0.3256 0.06114 2006 12 10 54079 -0.1149 0.3279 0.06039 2006 12 11 54080 -0.1161 0.3301 0.05949 2006 12 12 54081 -0.1173 0.3325 0.05847 2006 12 13 54082 -0.1184 0.3348 0.05739 2006 12 14 54083 -0.1195 0.3371 0.05631 2006 12 15 54084 -0.1205 0.3395 0.05517 2006 12 16 54085 -0.1215 0.3419 0.05415 2006 12 17 54086 -0.1224 0.3443 0.05329 2006 12 18 54087 -0.1233 0.3467 0.05261 2006 12 19 54088 -0.1242 0.3491 0.05210 2006 12 20 54089 -0.1250 0.3516 0.05172 2006 12 21 54090 -0.1257 0.3541 0.05139 2006 12 22 54091 -0.1264 0.3566 0.05101 2006 12 23 54092 -0.1271 0.3591 0.05046 2006 12 24 54093 -0.1277 0.3616 0.04967 2006 12 25 54094 -0.1282 0.3641 0.04860 2006 12 26 54095 -0.1288 0.3666 0.04728 2006 12 27 54096 -0.1292 0.3692 0.04583 2006 12 28 54097 -0.1296 0.3717 0.04436 2006 12 29 54098 -0.1300 0.3743 0.04302 2006 12 30 54099 -0.1303 0.3769 0.04192 2006 12 31 54100 -0.1305 0.3795 0.04110 2007 1 1 54101 -0.1307 0.3821 0.04056 2007 1 2 54102 -0.1309 0.3847 0.04020 2007 1 3 54103 -0.1310 0.3873 0.03993 2007 1 4 54104 -0.1310 0.3899 0.03961 2007 1 5 54105 -0.1310 0.3925 0.03917 2007 1 6 54106 -0.1309 0.3952 0.03855 2007 1 7 54107 -0.1308 0.3978 0.03776 2007 1 8 54108 -0.1307 0.4004 0.03682 2007 1 9 54109 -0.1304 0.4031 0.03580 2007 1 10 54110 -0.1302 0.4057 0.03476 2007 1 11 54111 -0.1298 0.4083 0.03375 2007 1 12 54112 -0.1295 0.4110 0.03285 2007 1 13 54113 -0.1290 0.4136 0.03209 2007 1 14 54114 -0.1285 0.4162 0.03150 2007 1 15 54115 -0.1280 0.4188 0.03108 2007 1 16 54116 -0.1274 0.4214 0.03080 2007 1 17 54117 -0.1268 0.4241 0.03059 2007 1 18 54118 -0.1261 0.4267 0.03036 2007 1 19 54119 -0.1253 0.4293 0.02998 2007 1 20 54120 -0.1245 0.4319 0.02935 2007 1 21 54121 -0.1237 0.4344 0.02841 2007 1 22 54122 -0.1227 0.4370 0.02719 2007 1 23 54123 -0.1218 0.4396 0.02579 2007 1 24 54124 -0.1208 0.4421 0.02434 2007 1 25 54125 -0.1197 0.4447 0.02301 2007 1 26 54126 -0.1186 0.4472 0.02191 2007 1 27 54127 -0.1174 0.4497 0.02111 2007 1 28 54128 -0.1162 0.4522 0.02058 2007 1 29 54129 -0.1150 0.4547 0.02026 2007 1 30 54130 -0.1137 0.4572 0.02004 2007 1 31 54131 -0.1123 0.4597 0.01979 2007 2 1 54132 -0.1109 0.4621 0.01944 2007 2 2 54133 -0.1094 0.4645 0.01891 2007 2 3 54134 -0.1079 0.4669 0.01819 2007 2 4 54135 -0.1063 0.4693 0.01730 2007 2 5 54136 -0.1047 0.4717 0.01629 2007 2 6 54137 -0.1031 0.4740 0.01522 2007 2 7 54138 -0.1014 0.4763 0.01418 2007 2 8 54139 -0.0996 0.4786 0.01321 2007 2 9 54140 -0.0978 0.4809 0.01237 2007 2 10 54141 -0.0960 0.4832 0.01169 2007 2 11 54142 -0.0941 0.4854 0.01117 2007 2 12 54143 -0.0922 0.4876 0.01079 2007 2 13 54144 -0.0902 0.4898 0.01050 2007 2 14 54145 -0.0882 0.4919 0.01022 2007 2 15 54146 -0.0862 0.4941 0.00983 2007 2 16 54147 -0.0841 0.4962 0.00920 2007 2 17 54148 -0.0819 0.4982 0.00826 2007 2 18 54149 -0.0798 0.5003 0.00698 2007 2 19 54150 -0.0776 0.5023 0.00542 2007 2 20 54151 -0.0753 0.5042 0.00375 2007 2 21 54152 -0.0730 0.5062 0.00212 2007 2 22 54153 -0.0707 0.5081 0.00071 2007 2 23 54154 -0.0683 0.5100 -0.00040 2007 2 24 54155 -0.0659 0.5118 -0.00121 2007 2 25 54156 -0.0635 0.5136 -0.00180 2007 2 26 54157 -0.0610 0.5154 -0.00229 2007 2 27 54158 -0.0585 0.5172 -0.00279 2007 2 28 54159 -0.0559 0.5189 -0.00341 2007 3 1 54160 -0.0534 0.5205 -0.00423 2007 3 2 54161 -0.0507 0.5222 -0.00525 2007 3 3 54162 -0.0481 0.5238 -0.00648 2007 3 4 54163 -0.0454 0.5253 -0.00785 2007 3 5 54164 -0.0427 0.5269 -0.00929 2007 3 6 54165 -0.0400 0.5283 -0.01070 2007 3 7 54166 -0.0372 0.5298 -0.01199 2007 3 8 54167 -0.0345 0.5312 -0.01309 2007 3 9 54168 -0.0316 0.5326 -0.01395 2007 3 10 54169 -0.0288 0.5339 -0.01458 2007 3 11 54170 -0.0259 0.5353 -0.01501 2007 3 12 54171 -0.0230 0.5366 -0.01530 2007 3 13 54172 -0.0201 0.5378 -0.01553 2007 3 14 54173 -0.0171 0.5390 -0.01582 2007 3 15 54174 -0.0142 0.5402 -0.01629 2007 3 16 54175 -0.0112 0.5413 -0.01708 2007 3 17 54176 -0.0082 0.5424 -0.01824 2007 3 18 54177 -0.0051 0.5434 -0.01977 2007 3 19 54178 -0.0021 0.5444 -0.02155 2007 3 20 54179 0.0010 0.5453 -0.02339 2007 3 21 54180 0.0041 0.5462 -0.02508 2007 3 22 54181 0.0072 0.5471 -0.02647 2007 3 23 54182 0.0103 0.5479 -0.02750 2007 3 24 54183 0.0135 0.5487 -0.02823 2007 3 25 54184 0.0166 0.5494 -0.02877 2007 3 26 54185 0.0198 0.5500 -0.02927 2007 3 27 54186 0.0230 0.5507 -0.02983 2007 3 28 54187 0.0261 0.5513 -0.03055 2007 3 29 54188 0.0294 0.5518 -0.03148 2007 3 30 54189 0.0326 0.5523 -0.03262 2007 3 31 54190 0.0358 0.5527 -0.03393 2007 4 1 54191 0.0390 0.5531 -0.03534 2007 4 2 54192 0.0423 0.5535 -0.03678 2007 4 3 54193 0.0455 0.5538 -0.03816 2007 4 4 54194 0.0488 0.5540 -0.03943 2007 4 5 54195 0.0520 0.5542 -0.04055 2007 4 6 54196 0.0553 0.5544 -0.04149 2007 4 7 54197 0.0586 0.5545 -0.04227 2007 4 8 54198 0.0618 0.5545 -0.04287 2007 4 9 54199 0.0651 0.5545 -0.04337 2007 4 10 54200 0.0684 0.5545 -0.04389 2007 4 11 54201 0.0717 0.5544 -0.04449 2007 4 12 54202 0.0750 0.5543 -0.04535 2007 4 13 54203 0.0783 0.5541 -0.04654 2007 4 14 54204 0.0815 0.5539 -0.04810 2007 4 15 54205 0.0848 0.5536 -0.04993 2007 4 16 54206 0.0881 0.5533 -0.05178 2007 4 17 54207 0.0914 0.5529 -0.05349 2007 4 18 54208 0.0947 0.5525 -0.05486 2007 4 19 54209 0.0979 0.5520 -0.05583 2007 4 20 54210 0.1012 0.5515 -0.05639 2007 4 21 54211 0.1045 0.5509 -0.05663 2007 4 22 54212 0.1077 0.5503 -0.05670 2007 4 23 54213 0.1110 0.5496 -0.05683 2007 4 24 54214 0.1142 0.5489 -0.05698 2007 4 25 54215 0.1175 0.5481 -0.05729 2007 4 26 54216 0.1207 0.5473 -0.05783 2007 4 27 54217 0.1239 0.5465 -0.05853 2007 4 28 54218 0.1271 0.5456 -0.05927 2007 4 29 54219 0.1303 0.5446 -0.06004 2007 4 30 54220 0.1335 0.5436 -0.06077 2007 5 1 54221 0.1367 0.5426 -0.06139 2007 5 2 54222 0.1398 0.5415 -0.06189 2007 5 3 54223 0.1430 0.5403 -0.06219 2007 5 4 54224 0.1461 0.5391 -0.06229 2007 5 5 54225 0.1492 0.5379 -0.06222 2007 5 6 54226 0.1523 0.5366 -0.06202 2007 5 7 54227 0.1554 0.5353 -0.06175 2007 5 8 54228 0.1585 0.5339 -0.06159 2007 5 9 54229 0.1615 0.5325 -0.06164 2007 5 10 54230 0.1646 0.5310 -0.06198 2007 5 11 54231 0.1676 0.5295 -0.06264 2007 5 12 54232 0.1706 0.5279 -0.06355 2007 5 13 54233 0.1735 0.5263 -0.06463 2007 5 14 54234 0.1765 0.5247 -0.06583 2007 5 15 54235 0.1794 0.5230 -0.06686 2007 5 16 54236 0.1824 0.5213 -0.06765 2007 5 17 54237 0.1853 0.5195 -0.06809 2007 5 18 54238 0.1881 0.5177 -0.06824 2007 5 19 54239 0.1910 0.5158 -0.06822 2007 5 20 54240 0.1938 0.5139 -0.06816 2007 5 21 54241 0.1966 0.5119 -0.06818 2007 5 22 54242 0.1994 0.5099 -0.06835 2007 5 23 54243 0.2021 0.5079 -0.06861 2007 5 24 54244 0.2048 0.5058 -0.06902 2007 5 25 54245 0.2075 0.5037 -0.06951 2007 5 26 54246 0.2102 0.5016 -0.07000 2007 5 27 54247 0.2129 0.4994 -0.07043 2007 5 28 54248 0.2155 0.4971 -0.07068 2007 5 29 54249 0.2181 0.4948 -0.07078 2007 5 30 54250 0.2206 0.4925 -0.07065 2007 5 31 54251 0.2231 0.4902 -0.07025 2007 6 1 54252 0.2256 0.4878 -0.06960 2007 6 2 54253 0.2281 0.4853 -0.06882 2007 6 3 54254 0.2305 0.4829 -0.06799 2007 6 4 54255 0.2329 0.4803 -0.06719 2007 6 5 54256 0.2353 0.4778 -0.06657 2007 6 6 54257 0.2376 0.4752 -0.06614 2007 6 7 54258 0.2399 0.4726 -0.06603 2007 6 8 54259 0.2422 0.4699 -0.06626 2007 6 9 54260 0.2444 0.4672 -0.06665 2007 6 10 54261 0.2466 0.4645 -0.06708 2007 6 11 54262 0.2488 0.4618 -0.06739 2007 6 12 54263 0.2509 0.4590 -0.06748 2007 6 13 54264 0.2530 0.4561 -0.06730 2007 6 14 54265 0.2550 0.4533 -0.06686 2007 6 15 54266 0.2570 0.4504 -0.06623 2007 6 16 54267 0.2590 0.4475 -0.06550 2007 6 17 54268 0.2609 0.4445 -0.06484 2007 6 18 54269 0.2628 0.4415 -0.06433 2007 6 19 54270 0.2647 0.4385 -0.06404 2007 6 20 54271 0.2665 0.4355 -0.06393 2007 6 21 54272 0.2682 0.4324 -0.06393 2007 6 22 54273 0.2700 0.4293 -0.06392 2007 6 23 54274 0.2716 0.4262 -0.06379 2007 6 24 54275 0.2733 0.4230 -0.06363 2007 6 25 54276 0.2749 0.4199 -0.06333 2007 6 26 54277 0.2764 0.4167 -0.06284 2007 6 27 54278 0.2779 0.4134 -0.06217 2007 6 28 54279 0.2794 0.4102 -0.06134 2007 6 29 54280 0.2808 0.4069 -0.06038 2007 6 30 54281 0.2821 0.4036 -0.05937 2007 7 1 54282 0.2835 0.4003 -0.05837 2007 7 2 54283 0.2847 0.3969 -0.05749 2007 7 3 54284 0.2859 0.3936 -0.05668 2007 7 4 54285 0.2871 0.3902 -0.05612 2007 7 5 54286 0.2882 0.3868 -0.05578 2007 7 6 54287 0.2893 0.3833 -0.05565 2007 7 7 54288 0.2903 0.3799 -0.05556 2007 7 8 54289 0.2913 0.3764 -0.05549 2007 7 9 54290 0.2922 0.3730 -0.05522 2007 7 10 54291 0.2931 0.3695 -0.05468 2007 7 11 54292 0.2939 0.3659 -0.05388 2007 7 12 54293 0.2947 0.3624 -0.05285 2007 7 13 54294 0.2954 0.3589 -0.05167 2007 7 14 54295 0.2960 0.3553 -0.05045 2007 7 15 54296 0.2966 0.3517 -0.04935 2007 7 16 54297 0.2972 0.3482 -0.04840 2007 7 17 54298 0.2977 0.3446 -0.04770 2007 7 18 54299 0.2981 0.3410 -0.04722 2007 7 19 54300 0.2985 0.3374 -0.04683 2007 7 20 54301 0.2988 0.3337 -0.04648 2007 7 21 54302 0.2991 0.3301 -0.04605 2007 7 22 54303 0.2993 0.3265 -0.04547 2007 7 23 54304 0.2994 0.3228 -0.04471 2007 7 24 54305 0.2995 0.3192 -0.04374 2007 7 25 54306 0.2996 0.3155 -0.04252 2007 7 26 54307 0.2995 0.3119 -0.04113 2007 7 27 54308 0.2994 0.3082 -0.03967 2007 7 28 54309 0.2993 0.3046 -0.03824 2007 7 29 54310 0.2991 0.3009 -0.03688 2007 7 30 54311 0.2988 0.2973 -0.03577 2007 7 31 54312 0.2985 0.2936 -0.03497 2007 8 1 54313 0.2981 0.2899 -0.03453 2007 8 2 54314 0.2977 0.2863 -0.03433 2007 8 3 54315 0.2972 0.2826 -0.03427 2007 8 4 54316 0.2966 0.2790 -0.03419 2007 8 5 54317 0.2960 0.2753 -0.03382 2007 8 6 54318 0.2953 0.2717 -0.03317 2007 8 7 54319 0.2945 0.2680 -0.03226 2007 8 8 54320 0.2937 0.2644 -0.03116 2007 8 9 54321 0.2928 0.2608 -0.02997 2007 8 10 54322 0.2919 0.2572 -0.02881 2007 8 11 54323 0.2909 0.2536 -0.02771 2007 8 12 54324 0.2898 0.2500 -0.02685 2007 8 13 54325 0.2887 0.2464 -0.02618 2007 8 14 54326 0.2875 0.2429 -0.02570 2007 8 15 54327 0.2862 0.2393 -0.02543 2007 8 16 54328 0.2849 0.2358 -0.02522 2007 8 17 54329 0.2835 0.2323 -0.02504 2007 8 18 54330 0.2820 0.2288 -0.02482 2007 8 19 54331 0.2805 0.2253 -0.02452 2007 8 20 54332 0.2789 0.2218 -0.02411 2007 8 21 54333 0.2773 0.2184 -0.02356 2007 8 22 54334 0.2756 0.2150 -0.02290 2007 8 23 54335 0.2738 0.2116 -0.02215 2007 8 24 54336 0.2720 0.2082 -0.02140 2007 8 25 54337 0.2701 0.2048 -0.02070 2007 8 26 54338 0.2681 0.2015 -0.02016 2007 8 27 54339 0.2661 0.1982 -0.01991 2007 8 28 54340 0.2640 0.1949 -0.02000 2007 8 29 54341 0.2619 0.1916 -0.02034 2007 8 30 54342 0.2596 0.1884 -0.02086 2007 8 31 54343 0.2574 0.1852 -0.02146 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) 53959 -65.47 .20 -5.66 .34 53960 -65.94 .20 -5.86 .34 53961 -66.25 .20 -5.95 .34 53962 -66.45 .11 -5.88 .19 53963 -66.58 .12 -5.80 .14 53964 -66.66 .12 -5.83 .14 53965 -66.69 .12 -5.94 .14 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 53959 -0.092 0.080 -0.260 0.340 53960 -0.116 0.080 -0.223 0.340 53961 -0.141 0.080 -0.224 0.340 53962 -0.158 0.044 -0.242 0.190 53963 -0.160 0.048 -0.253 0.140 53964 -0.151 0.048 -0.254 0.140 53965 -0.127 0.048 -0.254 0.140 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 **************************************************************************