********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 18 May 2006 Vol. XIX No. 020 ______________________________________________________________________ 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 June 30, 2006. * * Last positive leap second was introduced in UTC on December 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 5 12 53867 .10751 .00003 .35145 .00005 .222963 .000011 6 5 13 53868 .10783 .00003 .35075 .00004 .221636 .000019 6 5 14 53869 .10858 .00003 .34990 .00003 .220492 .000019 6 5 15 53870 .10970 .00003 .34919 .00003 .219560 .000020 6 5 16 53871 .11070 .00002 .34859 .00002 .218759 .000020 6 5 17 53872 .11114 .00003 .34791 .00002 .217993 .000019 6 5 18 53873 .11127 .00002 .34706 .00002 .217113 .000018 _______________________________________________________________________ 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 = .0419 - .0389 cos A + .1604 sin A + .1085 cos C - .1548 sin C y = .3558 + .1477 cos A + .0416 sin A - .1548 cos C - .1085 sin C UT1-UTC = .2308 - .00045 (MJD - 53878) - (UT2-UT1) where A = 2*pi*(MJD-53873)/365.25 and C = 2*pi*(MJD-53873)/435. TAI-UTC(MJD 53874) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-53873)**0.80 S t = 0.00025 (MJD-53873)**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 5 19 53874 0.1115 0.3462 0.21599 2006 5 20 53875 0.1118 0.3453 0.21466 2006 5 21 53876 0.1120 0.3445 0.21311 2006 5 22 53877 0.1123 0.3437 0.21139 2006 5 23 53878 0.1125 0.3428 0.20959 2006 5 24 53879 0.1128 0.3420 0.20788 2006 5 25 53880 0.1130 0.3411 0.20638 2006 5 26 53881 0.1132 0.3403 0.20513 2006 5 27 53882 0.1134 0.3394 0.20420 2006 5 28 53883 0.1136 0.3385 0.20352 2006 5 29 53884 0.1138 0.3376 0.20301 2006 5 30 53885 0.1139 0.3367 0.20258 2006 5 31 53886 0.1141 0.3358 0.20214 2006 6 1 53887 0.1142 0.3349 0.20162 2006 6 2 53888 0.1144 0.3340 0.20097 2006 6 3 53889 0.1145 0.3331 0.20019 2006 6 4 53890 0.1146 0.3321 0.19931 2006 6 5 53891 0.1147 0.3312 0.19837 2006 6 6 53892 0.1147 0.3302 0.19745 2006 6 7 53893 0.1148 0.3293 0.19662 2006 6 8 53894 0.1149 0.3283 0.19594 2006 6 9 53895 0.1149 0.3273 0.19547 2006 6 10 53896 0.1149 0.3263 0.19524 2006 6 11 53897 0.1149 0.3254 0.19524 2006 6 12 53898 0.1149 0.3244 0.19544 2006 6 13 53899 0.1149 0.3234 0.19571 2006 6 14 53900 0.1149 0.3224 0.19594 2006 6 15 53901 0.1149 0.3214 0.19599 2006 6 16 53902 0.1148 0.3203 0.19580 2006 6 17 53903 0.1148 0.3193 0.19535 2006 6 18 53904 0.1147 0.3183 0.19471 2006 6 19 53905 0.1146 0.3173 0.19399 2006 6 20 53906 0.1145 0.3162 0.19332 2006 6 21 53907 0.1144 0.3152 0.19284 2006 6 22 53908 0.1143 0.3141 0.19265 2006 6 23 53909 0.1141 0.3131 0.19276 2006 6 24 53910 0.1140 0.3120 0.19314 2006 6 25 53911 0.1138 0.3110 0.19371 2006 6 26 53912 0.1136 0.3099 0.19438 2006 6 27 53913 0.1134 0.3089 0.19502 2006 6 28 53914 0.1132 0.3078 0.19558 2006 6 29 53915 0.1130 0.3067 0.19600 2006 6 30 53916 0.1128 0.3057 0.19626 2006 7 1 53917 0.1125 0.3046 0.19638 2006 7 2 53918 0.1123 0.3035 0.19640 2006 7 3 53919 0.1120 0.3024 0.19636 2006 7 4 53920 0.1117 0.3014 0.19633 2006 7 5 53921 0.1114 0.3003 0.19638 2006 7 6 53922 0.1111 0.2992 0.19656 2006 7 7 53923 0.1108 0.2981 0.19693 2006 7 8 53924 0.1104 0.2970 0.19748 2006 7 9 53925 0.1100 0.2959 0.19819 2006 7 10 53926 0.1097 0.2949 0.19897 2006 7 11 53927 0.1093 0.2938 0.19971 2006 7 12 53928 0.1089 0.2927 0.20028 2006 7 13 53929 0.1084 0.2916 0.20055 2006 7 14 53930 0.1080 0.2905 0.20052 2006 7 15 53931 0.1075 0.2895 0.20022 2006 7 16 53932 0.1071 0.2884 0.19980 2006 7 17 53933 0.1066 0.2873 0.19941 2006 7 18 53934 0.1061 0.2862 0.19919 2006 7 19 53935 0.1055 0.2852 0.19923 2006 7 20 53936 0.1050 0.2841 0.19956 2006 7 21 53937 0.1044 0.2830 0.20014 2006 7 22 53938 0.1039 0.2820 0.20090 2006 7 23 53939 0.1033 0.2809 0.20174 2006 7 24 53940 0.1027 0.2799 0.20256 2006 7 25 53941 0.1020 0.2788 0.20328 2006 7 26 53942 0.1014 0.2778 0.20386 2006 7 27 53943 0.1007 0.2767 0.20426 2006 7 28 53944 0.1000 0.2757 0.20451 2006 7 29 53945 0.0993 0.2747 0.20463 2006 7 30 53946 0.0986 0.2737 0.20469 2006 7 31 53947 0.0979 0.2726 0.20475 2006 8 1 53948 0.0971 0.2716 0.20487 2006 8 2 53949 0.0963 0.2706 0.20511 2006 8 3 53950 0.0955 0.2697 0.20551 2006 8 4 53951 0.0947 0.2687 0.20607 2006 8 5 53952 0.0939 0.2677 0.20678 2006 8 6 53953 0.0930 0.2667 0.20758 2006 8 7 53954 0.0921 0.2658 0.20837 2006 8 8 53955 0.0913 0.2649 0.20901 2006 8 9 53956 0.0903 0.2639 0.20938 2006 8 10 53957 0.0894 0.2630 0.20940 2006 8 11 53958 0.0884 0.2621 0.20910 2006 8 12 53959 0.0875 0.2612 0.20858 2006 8 13 53960 0.0865 0.2603 0.20803 2006 8 14 53961 0.0854 0.2595 0.20762 2006 8 15 53962 0.0844 0.2586 0.20748 2006 8 16 53963 0.0833 0.2578 0.20766 2006 8 17 53964 0.0823 0.2569 0.20813 2006 8 18 53965 0.0812 0.2561 0.20879 2006 8 19 53966 0.0800 0.2553 0.20953 2006 8 20 53967 0.0789 0.2545 0.21026 2006 8 21 53968 0.0777 0.2538 0.21089 2006 8 22 53969 0.0765 0.2530 0.21135 2006 8 23 53970 0.0753 0.2523 0.21162 2006 8 24 53971 0.0741 0.2516 0.21170 2006 8 25 53972 0.0728 0.2509 0.21163 2006 8 26 53973 0.0716 0.2502 0.21147 2006 8 27 53974 0.0703 0.2495 0.21127 2006 8 28 53975 0.0689 0.2489 0.21110 2006 8 29 53976 0.0676 0.2483 0.21103 2006 8 30 53977 0.0662 0.2477 0.21110 2006 8 31 53978 0.0649 0.2471 0.21132 2006 9 1 53979 0.0635 0.2465 0.21159 2006 9 2 53980 0.0620 0.2460 0.21197 2006 9 3 53981 0.0606 0.2454 0.21237 2006 9 4 53982 0.0591 0.2449 0.21268 2006 9 5 53983 0.0576 0.2445 0.21276 2006 9 6 53984 0.0561 0.2440 0.21251 2006 9 7 53985 0.0546 0.2436 0.21189 2006 9 8 53986 0.0530 0.2432 0.21097 2006 9 9 53987 0.0515 0.2428 0.20991 2006 9 10 53988 0.0499 0.2424 0.20889 2006 9 11 53989 0.0482 0.2421 0.20811 2006 9 12 53990 0.0466 0.2418 0.20765 2006 9 13 53991 0.0450 0.2415 0.20752 2006 9 14 53992 0.0433 0.2412 0.20763 2006 9 15 53993 0.0416 0.2410 0.20788 2006 9 16 53994 0.0399 0.2408 0.20813 2006 9 17 53995 0.0382 0.2406 0.20830 2006 9 18 53996 0.0364 0.2405 0.20832 2006 9 19 53997 0.0346 0.2404 0.20815 2006 9 20 53998 0.0329 0.2403 0.20781 2006 9 21 53999 0.0310 0.2402 0.20730 2006 9 22 54000 0.0292 0.2402 0.20668 2006 9 23 54001 0.0274 0.2401 0.20602 2006 9 24 54002 0.0255 0.2402 0.20538 2006 9 25 54003 0.0237 0.2402 0.20483 2006 9 26 54004 0.0218 0.2403 0.20441 2006 9 27 54005 0.0199 0.2404 0.20416 2006 9 28 54006 0.0180 0.2405 0.20405 2006 9 29 54007 0.0160 0.2407 0.20407 2006 9 30 54008 0.0141 0.2409 0.20414 2006 10 1 54009 0.0122 0.2412 0.20417 2006 10 2 54010 0.0102 0.2414 0.20403 2006 10 3 54011 0.0082 0.2417 0.20361 2006 10 4 54012 0.0062 0.2420 0.20283 2006 10 5 54013 0.0042 0.2424 0.20172 2006 10 6 54014 0.0022 0.2428 0.20037 2006 10 7 54015 0.0002 0.2432 0.19897 2006 10 8 54016 -0.0019 0.2437 0.19770 2006 10 9 54017 -0.0039 0.2442 0.19672 2006 10 10 54018 -0.0060 0.2447 0.19609 2006 10 11 54019 -0.0080 0.2453 0.19576 2006 10 12 54020 -0.0101 0.2459 0.19563 2006 10 13 54021 -0.0121 0.2465 0.19556 2006 10 14 54022 -0.0142 0.2471 0.19544 2006 10 15 54023 -0.0163 0.2478 0.19518 2006 10 16 54024 -0.0184 0.2486 0.19476 2006 10 17 54025 -0.0205 0.2493 0.19415 2006 10 18 54026 -0.0226 0.2501 0.19339 2006 10 19 54027 -0.0247 0.2509 0.19252 2006 10 20 54028 -0.0267 0.2518 0.19158 2006 10 21 54029 -0.0288 0.2527 0.19066 2006 10 22 54030 -0.0309 0.2536 0.18982 2006 10 23 54031 -0.0330 0.2546 0.18911 2006 10 24 54032 -0.0351 0.2556 0.18857 2006 10 25 54033 -0.0372 0.2566 0.18821 2006 10 26 54034 -0.0393 0.2577 0.18798 2006 10 27 54035 -0.0414 0.2588 0.18784 2006 10 28 54036 -0.0434 0.2599 0.18769 2006 10 29 54037 -0.0455 0.2611 0.18743 2006 10 30 54038 -0.0476 0.2623 0.18696 2006 10 31 54039 -0.0496 0.2635 0.18619 2006 11 1 54040 -0.0517 0.2648 0.18510 2006 11 2 54041 -0.0537 0.2661 0.18375 2006 11 3 54042 -0.0557 0.2674 0.18227 2006 11 4 54043 -0.0578 0.2688 0.18084 2006 11 5 54044 -0.0598 0.2702 0.17962 2006 11 6 54045 -0.0617 0.2716 0.17872 2006 11 7 54046 -0.0637 0.2731 0.17815 2006 11 8 54047 -0.0657 0.2746 0.17783 2006 11 9 54048 -0.0676 0.2761 0.17763 2006 11 10 54049 -0.0696 0.2777 0.17743 2006 11 11 54050 -0.0715 0.2793 0.17712 2006 11 12 54051 -0.0734 0.2809 0.17664 2006 11 13 54052 -0.0752 0.2825 0.17599 2006 11 14 54053 -0.0771 0.2842 0.17518 2006 11 15 54054 -0.0789 0.2859 0.17424 2006 11 16 54055 -0.0807 0.2877 0.17324 2006 11 17 54056 -0.0825 0.2894 0.17223 2006 11 18 54057 -0.0843 0.2912 0.17129 2006 11 19 54058 -0.0860 0.2931 0.17047 2006 11 20 54059 -0.0878 0.2949 0.16983 2006 11 21 54060 -0.0895 0.2968 0.16937 2006 11 22 54061 -0.0911 0.2987 0.16910 2006 11 23 54062 -0.0928 0.3007 0.16896 2006 11 24 54063 -0.0944 0.3027 0.16885 2006 11 25 54064 -0.0960 0.3047 0.16869 2006 11 26 54065 -0.0976 0.3067 0.16835 2006 11 27 54066 -0.0991 0.3087 0.16777 2006 11 28 54067 -0.1006 0.3108 0.16692 2006 11 29 54068 -0.1021 0.3129 0.16584 2006 11 30 54069 -0.1036 0.3150 0.16461 2006 12 1 54070 -0.1050 0.3172 0.16338 2006 12 2 54071 -0.1064 0.3194 0.16229 2006 12 3 54072 -0.1077 0.3215 0.16147 2006 12 4 54073 -0.1090 0.3238 0.16097 2006 12 5 54074 -0.1103 0.3260 0.16076 2006 12 6 54075 -0.1115 0.3283 0.16074 2006 12 7 54076 -0.1127 0.3305 0.16079 2006 12 8 54077 -0.1139 0.3328 0.16080 2006 12 9 54078 -0.1150 0.3352 0.16070 2006 12 10 54079 -0.1161 0.3375 0.16044 2006 12 11 54080 -0.1171 0.3398 0.16004 2006 12 12 54081 -0.1181 0.3422 0.15951 2006 12 13 54082 -0.1190 0.3446 0.15891 2006 12 14 54083 -0.1199 0.3470 0.15831 2006 12 15 54084 -0.1208 0.3494 0.15778 2006 12 16 54085 -0.1216 0.3519 0.15738 2006 12 17 54086 -0.1224 0.3543 0.15718 2006 12 18 54087 -0.1231 0.3568 0.15716 2006 12 19 54088 -0.1238 0.3592 0.15730 2006 12 20 54089 -0.1244 0.3617 0.15753 2006 12 21 54090 -0.1250 0.3642 0.15777 2006 12 22 54091 -0.1255 0.3667 0.15795 2006 12 23 54092 -0.1260 0.3692 0.15795 2006 12 24 54093 -0.1265 0.3718 0.15773 2006 12 25 54094 -0.1269 0.3743 0.15726 2006 12 26 54095 -0.1272 0.3769 0.15659 2006 12 27 54096 -0.1275 0.3794 0.15585 2006 12 28 54097 -0.1277 0.3820 0.15514 2006 12 29 54098 -0.1279 0.3845 0.15457 2006 12 30 54099 -0.1281 0.3871 0.15422 2006 12 31 54100 -0.1281 0.3897 0.15421 2007 1 1 54101 -0.1282 0.3922 0.15445 2007 1 2 54102 -0.1282 0.3948 0.15483 2007 1 3 54103 -0.1281 0.3974 0.15524 2007 1 4 54104 -0.1280 0.4000 0.15557 2007 1 5 54105 -0.1278 0.4026 0.15575 2007 1 6 54106 -0.1276 0.4052 0.15574 2007 1 7 54107 -0.1273 0.4077 0.15564 2007 1 8 54108 -0.1270 0.4103 0.15546 2007 1 9 54109 -0.1266 0.4129 0.15515 2007 1 10 54110 -0.1262 0.4155 0.15478 2007 1 11 54111 -0.1257 0.4180 0.15442 2007 1 12 54112 -0.1252 0.4206 0.15414 2007 1 13 54113 -0.1246 0.4232 0.15403 2007 1 14 54114 -0.1239 0.4257 0.15407 2007 1 15 54115 -0.1232 0.4283 0.15428 2007 1 16 54116 -0.1225 0.4308 0.15462 2007 1 17 54117 -0.1217 0.4333 0.15496 2007 1 18 54118 -0.1208 0.4359 0.15525 2007 1 19 54119 -0.1199 0.4384 0.15534 2007 1 20 54120 -0.1190 0.4409 0.15512 2007 1 21 54121 -0.1180 0.4434 0.15452 2007 1 22 54122 -0.1169 0.4459 0.15360 2007 1 23 54123 -0.1158 0.4483 0.15246 2007 1 24 54124 -0.1146 0.4508 0.15126 2007 1 25 54125 -0.1134 0.4532 0.15018 2007 1 26 54126 -0.1121 0.4557 0.14935 2007 1 27 54127 -0.1108 0.4581 0.14884 2007 1 28 54128 -0.1095 0.4605 0.14865 2007 1 29 54129 -0.1080 0.4628 0.14866 2007 1 30 54130 -0.1066 0.4652 0.14874 2007 1 31 54131 -0.1051 0.4675 0.14884 2007 2 1 54132 -0.1035 0.4699 0.14883 2007 2 2 54133 -0.1019 0.4722 0.14858 2007 2 3 54134 -0.1002 0.4744 0.14812 2007 2 4 54135 -0.0985 0.4767 0.14748 2007 2 5 54136 -0.0968 0.4789 0.14677 2007 2 6 54137 -0.0950 0.4812 0.14610 2007 2 7 54138 -0.0931 0.4834 0.14552 2007 2 8 54139 -0.0912 0.4855 0.14505 2007 2 9 54140 -0.0893 0.4877 0.14469 2007 2 10 54141 -0.0873 0.4898 0.14455 2007 2 11 54142 -0.0853 0.4919 0.14468 2007 2 12 54143 -0.0832 0.4940 0.14500 2007 2 13 54144 -0.0811 0.4960 0.14542 2007 2 14 54145 -0.0789 0.4980 0.14582 2007 2 15 54146 -0.0767 0.5000 0.14602 2007 2 16 54147 -0.0745 0.5020 0.14589 2007 2 17 54148 -0.0722 0.5039 0.14539 2007 2 18 54149 -0.0699 0.5058 0.14446 2007 2 19 54150 -0.0676 0.5076 0.14326 2007 2 20 54151 -0.0652 0.5095 0.14194 2007 2 21 54152 -0.0627 0.5113 0.14063 2007 2 22 54153 -0.0603 0.5131 0.13947 2007 2 23 54154 -0.0578 0.5148 0.13861 2007 2 24 54155 -0.0552 0.5165 0.13811 2007 2 25 54156 -0.0527 0.5182 0.13784 2007 2 26 54157 -0.0501 0.5198 0.13765 2007 2 27 54158 -0.0474 0.5214 0.13735 2007 2 28 54159 -0.0448 0.5230 0.13699 2007 3 1 54160 -0.0421 0.5245 0.13645 2007 3 2 54161 -0.0393 0.5260 0.13563 2007 3 3 54162 -0.0366 0.5275 0.13461 2007 3 4 54163 -0.0338 0.5289 0.13340 2007 3 5 54164 -0.0310 0.5303 0.13207 2007 3 6 54165 -0.0281 0.5316 0.13072 2007 3 7 54166 -0.0253 0.5330 0.12947 2007 3 8 54167 -0.0224 0.5342 0.12839 2007 3 9 54168 -0.0194 0.5355 0.12751 2007 3 10 54169 -0.0165 0.5366 0.12684 2007 3 11 54170 -0.0135 0.5378 0.12635 2007 3 12 54171 -0.0105 0.5389 0.12592 2007 3 13 54172 -0.0075 0.5400 0.12547 2007 3 14 54173 -0.0045 0.5410 0.12493 2007 3 15 54174 -0.0014 0.5420 0.12421 2007 3 16 54175 0.0016 0.5429 0.12323 2007 3 17 54176 0.0047 0.5438 0.12187 2007 3 18 54177 0.0078 0.5447 0.12022 2007 3 19 54178 0.0109 0.5455 0.11837 2007 3 20 54179 0.0141 0.5463 0.11653 2007 3 21 54180 0.0172 0.5470 0.11489 2007 3 22 54181 0.0204 0.5477 0.11359 2007 3 23 54182 0.0236 0.5484 0.11273 2007 3 24 54183 0.0267 0.5490 0.11222 2007 3 25 54184 0.0299 0.5495 0.11198 2007 3 26 54185 0.0332 0.5500 0.11174 2007 3 27 54186 0.0364 0.5505 0.11143 2007 3 28 54187 0.0396 0.5509 0.11101 2007 3 29 54188 0.0428 0.5513 0.11041 2007 3 30 54189 0.0461 0.5516 0.10961 2007 3 31 54190 0.0493 0.5519 0.10867 2007 4 1 54191 0.0526 0.5522 0.10763 2007 4 2 54192 0.0558 0.5524 0.10654 2007 4 3 54193 0.0591 0.5525 0.10550 2007 4 4 54194 0.0623 0.5526 0.10457 2007 4 5 54195 0.0656 0.5527 0.10382 2007 4 6 54196 0.0689 0.5527 0.10330 2007 4 7 54197 0.0721 0.5526 0.10292 2007 4 8 54198 0.0754 0.5525 0.10267 2007 4 9 54199 0.0787 0.5524 0.10254 2007 4 10 54200 0.0819 0.5522 0.10245 2007 4 11 54201 0.0852 0.5520 0.10228 2007 4 12 54202 0.0884 0.5517 0.10192 2007 4 13 54203 0.0917 0.5514 0.10121 2007 4 14 54204 0.0949 0.5510 0.10012 2007 4 15 54205 0.0982 0.5506 0.09875 2007 4 16 54206 0.1014 0.5502 0.09724 2007 4 17 54207 0.1046 0.5497 0.09581 2007 4 18 54208 0.1078 0.5491 0.09458 2007 4 19 54209 0.1110 0.5485 0.09362 2007 4 20 54210 0.1142 0.5478 0.09292 2007 4 21 54211 0.1174 0.5471 0.09249 2007 4 22 54212 0.1206 0.5464 0.09218 2007 4 23 54213 0.1238 0.5456 0.09188 2007 4 24 54214 0.1269 0.5448 0.09148 2007 4 25 54215 0.1300 0.5439 0.09092 2007 4 26 54216 0.1332 0.5429 0.09022 2007 4 27 54217 0.1363 0.5419 0.08936 2007 4 28 54218 0.1394 0.5409 0.08841 2007 4 29 54219 0.1424 0.5398 0.08746 2007 4 30 54220 0.1455 0.5387 0.08662 2007 5 1 54221 0.1485 0.5375 0.08594 2007 5 2 54222 0.1515 0.5363 0.08544 2007 5 3 54223 0.1546 0.5351 0.08513 2007 5 4 54224 0.1575 0.5338 0.08496 2007 5 5 54225 0.1605 0.5324 0.08491 2007 5 6 54226 0.1634 0.5310 0.08500 2007 5 7 54227 0.1664 0.5296 0.08513 2007 5 8 54228 0.1693 0.5281 0.08514 2007 5 9 54229 0.1721 0.5265 0.08500 2007 5 10 54230 0.1750 0.5249 0.08463 2007 5 11 54231 0.1778 0.5233 0.08400 2007 5 12 54232 0.1806 0.5217 0.08317 2007 5 13 54233 0.1834 0.5199 0.08215 2007 5 14 54234 0.1862 0.5182 0.08107 2007 5 15 54235 0.1889 0.5164 0.08020 2007 5 16 54236 0.1916 0.5145 0.07968 2007 5 17 54237 0.1943 0.5126 0.07954 2007 5 18 54238 0.1969 0.5107 0.07972 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) 53854 -54.71 .18 -5.84 .12 53855 -54.84 .17 -6.10 .11 53856 -54.63 .17 -6.44 .34 53857 -54.17 .15 -6.72 .34 53858 -53.74 .14 -6.77 .34 53859 -53.54 .14 -6.61 .34 53860 -53.48 .14 -6.40 .34 53861 -53.39 .14 -6.29 .34 53862 -53.30 .17 -6.22 .34 53863 -53.36 .17 -6.06 .34 53864 -53.61 .22 -5.81 .34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 53854 -0.105 0.072 -0.303 0.120 53855 -0.109 0.068 -0.296 0.110 53856 -0.099 0.068 -0.318 0.340 53857 -0.075 0.060 -0.353 0.340 53858 -0.043 0.056 -0.358 0.340 53859 -0.023 0.056 -0.339 0.340 53860 -0.019 0.056 -0.303 0.340 53861 -0.027 0.056 -0.294 0.340 53862 -0.046 0.068 -0.298 0.340 53863 -0.073 0.068 -0.297 0.340 53864 -0.094 0.088 -0.290 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 **************************************************************************