********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 9 February 2006 Vol. XIX No. 006 ______________________________________________________________________ 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 = +0.3 seconds beginning 01 January 2006 at 0000 UTC Beginning 1 January 2006: TAI-UTC(BIPM) = 33.000 000 seconds ********************************************************************** * >>> A positive leap second was introduced in UTC on <<< * * >>> 31 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 2 3 53769 .05025 .00004 .38414 .00002 .321161 .000009 6 2 4 53770 .05017 .00005 .38444 .00002 .319752 .000010 6 2 5 53771 .05037 .00004 .38449 .00002 .318630 .000012 6 2 6 53772 .05083 .00003 .38440 .00002 .317787 .000011 6 2 7 53773 .05114 .00003 .38433 .00002 .317210 .000010 6 2 8 53774 .05152 .00003 .38424 .00002 .316829 .000010 6 2 9 53775 .05251 .00003 .38412 .00002 .316506 .000010 _______________________________________________________________________ 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 = .0486 - .1485 cos A - .0849 sin A + .1532 cos C + .1053 sin C y = .3604 - .0827 cos A + .1376 sin A + .1053 cos C - .1532 sin C UT1-UTC = .3068 - .00040 (MJD - 53780) - (UT2-UT1) where A = 2*pi*(MJD-53775)/365.25 and C = 2*pi*(MJD-53775)/435. TAI-UTC(MJD 53776) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-53775)**0.80 S t = 0.00025 (MJD-53775)**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 2 10 53776 0.0536 0.3840 0.31618 2006 2 11 53777 0.0545 0.3840 0.31577 2006 2 12 53778 0.0554 0.3840 0.31519 2006 2 13 53779 0.0562 0.3841 0.31443 2006 2 14 53780 0.0569 0.3841 0.31350 2006 2 15 53781 0.0576 0.3842 0.31241 2006 2 16 53782 0.0582 0.3843 0.31121 2006 2 17 53783 0.0588 0.3845 0.30997 2006 2 18 53784 0.0593 0.3846 0.30875 2006 2 19 53785 0.0598 0.3847 0.30760 2006 2 20 53786 0.0603 0.3848 0.30659 2006 2 21 53787 0.0607 0.3849 0.30576 2006 2 22 53788 0.0611 0.3851 0.30510 2006 2 23 53789 0.0615 0.3852 0.30455 2006 2 24 53790 0.0619 0.3853 0.30401 2006 2 25 53791 0.0622 0.3854 0.30336 2006 2 26 53792 0.0626 0.3855 0.30249 2006 2 27 53793 0.0629 0.3857 0.30131 2006 2 28 53794 0.0633 0.3858 0.29983 2006 3 1 53795 0.0636 0.3859 0.29816 2006 3 2 53796 0.0639 0.3860 0.29646 2006 3 3 53797 0.0643 0.3861 0.29492 2006 3 4 53798 0.0646 0.3862 0.29367 2006 3 5 53799 0.0650 0.3863 0.29275 2006 3 6 53800 0.0653 0.3863 0.29214 2006 3 7 53801 0.0657 0.3864 0.29176 2006 3 8 53802 0.0660 0.3865 0.29149 2006 3 9 53803 0.0664 0.3866 0.29124 2006 3 10 53804 0.0668 0.3867 0.29090 2006 3 11 53805 0.0672 0.3867 0.29042 2006 3 12 53806 0.0676 0.3868 0.28976 2006 3 13 53807 0.0680 0.3868 0.28891 2006 3 14 53808 0.0684 0.3869 0.28788 2006 3 15 53809 0.0688 0.3869 0.28672 2006 3 16 53810 0.0692 0.3870 0.28550 2006 3 17 53811 0.0697 0.3870 0.28430 2006 3 18 53812 0.0701 0.3871 0.28318 2006 3 19 53813 0.0706 0.3871 0.28222 2006 3 20 53814 0.0711 0.3871 0.28144 2006 3 21 53815 0.0716 0.3871 0.28086 2006 3 22 53816 0.0720 0.3871 0.28042 2006 3 23 53817 0.0726 0.3871 0.28005 2006 3 24 53818 0.0731 0.3871 0.27962 2006 3 25 53819 0.0736 0.3871 0.27899 2006 3 26 53820 0.0741 0.3871 0.27805 2006 3 27 53821 0.0747 0.3871 0.27676 2006 3 28 53822 0.0752 0.3871 0.27517 2006 3 29 53823 0.0758 0.3870 0.27342 2006 3 30 53824 0.0764 0.3870 0.27171 2006 3 31 53825 0.0769 0.3869 0.27021 2006 4 1 53826 0.0775 0.3869 0.26902 2006 4 2 53827 0.0781 0.3868 0.26817 2006 4 3 53828 0.0787 0.3867 0.26759 2006 4 4 53829 0.0793 0.3866 0.26717 2006 4 5 53830 0.0799 0.3865 0.26682 2006 4 6 53831 0.0806 0.3864 0.26642 2006 4 7 53832 0.0812 0.3863 0.26592 2006 4 8 53833 0.0818 0.3862 0.26527 2006 4 9 53834 0.0825 0.3860 0.26446 2006 4 10 53835 0.0831 0.3859 0.26348 2006 4 11 53836 0.0838 0.3858 0.26239 2006 4 12 53837 0.0844 0.3856 0.26124 2006 4 13 53838 0.0851 0.3854 0.26009 2006 4 14 53839 0.0858 0.3852 0.25902 2006 4 15 53840 0.0864 0.3850 0.25810 2006 4 16 53841 0.0871 0.3848 0.25737 2006 4 17 53842 0.0878 0.3846 0.25685 2006 4 18 53843 0.0885 0.3844 0.25650 2006 4 19 53844 0.0892 0.3841 0.25625 2006 4 20 53845 0.0899 0.3839 0.25600 2006 4 21 53846 0.0905 0.3836 0.25562 2006 4 22 53847 0.0912 0.3834 0.25500 2006 4 23 53848 0.0919 0.3831 0.25408 2006 4 24 53849 0.0926 0.3828 0.25287 2006 4 25 53850 0.0933 0.3825 0.25147 2006 4 26 53851 0.0940 0.3821 0.25003 2006 4 27 53852 0.0947 0.3818 0.24872 2006 4 28 53853 0.0954 0.3814 0.24768 2006 4 29 53854 0.0961 0.3811 0.24697 2006 4 30 53855 0.0968 0.3807 0.24657 2006 5 1 53856 0.0975 0.3803 0.24639 2006 5 2 53857 0.0982 0.3799 0.24632 2006 5 3 53858 0.0989 0.3795 0.24625 2006 5 4 53859 0.0996 0.3791 0.24609 2006 5 5 53860 0.1003 0.3786 0.24580 2006 5 6 53861 0.1010 0.3782 0.24536 2006 5 7 53862 0.1017 0.3777 0.24476 2006 5 8 53863 0.1023 0.3772 0.24405 2006 5 9 53864 0.1030 0.3767 0.24328 2006 5 10 53865 0.1037 0.3762 0.24250 2006 5 11 53866 0.1044 0.3757 0.24180 2006 5 12 53867 0.1051 0.3751 0.24122 2006 5 13 53868 0.1057 0.3746 0.24083 2006 5 14 53869 0.1064 0.3740 0.24065 2006 5 15 53870 0.1069 0.3734 0.24066 2006 5 16 53871 0.1075 0.3728 0.24078 2006 5 17 53872 0.1082 0.3722 0.24094 2006 5 18 53873 0.1088 0.3716 0.24099 2006 5 19 53874 0.1095 0.3709 0.24083 2006 5 20 53875 0.1101 0.3702 0.24040 2006 5 21 53876 0.1107 0.3696 0.23971 2006 5 22 53877 0.1114 0.3689 0.23881 2006 5 23 53878 0.1120 0.3682 0.23783 2006 5 24 53879 0.1126 0.3674 0.23693 2006 5 25 53880 0.1132 0.3667 0.23625 2006 5 26 53881 0.1138 0.3660 0.23586 2006 5 27 53882 0.1144 0.3652 0.23579 2006 5 28 53883 0.1149 0.3644 0.23598 2006 5 29 53884 0.1155 0.3636 0.23632 2006 5 30 53885 0.1161 0.3628 0.23671 2006 5 31 53886 0.1166 0.3620 0.23705 2006 6 1 53887 0.1172 0.3611 0.23727 2006 6 2 53888 0.1177 0.3603 0.23735 2006 6 3 53889 0.1182 0.3594 0.23727 2006 6 4 53890 0.1187 0.3585 0.23708 2006 6 5 53891 0.1192 0.3576 0.23680 2006 6 6 53892 0.1197 0.3567 0.23651 2006 6 7 53893 0.1202 0.3558 0.23627 2006 6 8 53894 0.1206 0.3549 0.23613 2006 6 9 53895 0.1211 0.3539 0.23617 2006 6 10 53896 0.1215 0.3529 0.23641 2006 6 11 53897 0.1220 0.3520 0.23685 2006 6 12 53898 0.1224 0.3510 0.23745 2006 6 13 53899 0.1228 0.3499 0.23810 2006 6 14 53900 0.1232 0.3489 0.23868 2006 6 15 53901 0.1235 0.3479 0.23908 2006 6 16 53902 0.1239 0.3468 0.23922 2006 6 17 53903 0.1243 0.3458 0.23909 2006 6 18 53904 0.1246 0.3447 0.23877 2006 6 19 53905 0.1249 0.3436 0.23836 2006 6 20 53906 0.1252 0.3425 0.23802 2006 6 21 53907 0.1255 0.3414 0.23786 2006 6 22 53908 0.1258 0.3403 0.23798 2006 6 23 53909 0.1260 0.3392 0.23840 2006 6 24 53910 0.1263 0.3380 0.23907 2006 6 25 53911 0.1265 0.3369 0.23992 2006 6 26 53912 0.1267 0.3357 0.24083 2006 6 27 53913 0.1269 0.3345 0.24171 2006 6 28 53914 0.1271 0.3334 0.24248 2006 6 29 53915 0.1272 0.3322 0.24309 2006 6 30 53916 0.1274 0.3310 0.24354 2006 7 1 53917 0.1275 0.3297 0.24385 2006 7 2 53918 0.1276 0.3285 0.24405 2006 7 3 53919 0.1277 0.3273 0.24422 2006 7 4 53920 0.1277 0.3261 0.24440 2006 7 5 53921 0.1278 0.3248 0.24466 2006 7 6 53922 0.1278 0.3236 0.24506 2006 7 7 53923 0.1278 0.3223 0.24564 2006 7 8 53924 0.1278 0.3210 0.24640 2006 7 9 53925 0.1278 0.3198 0.24732 2006 7 10 53926 0.1277 0.3185 0.24832 2006 7 11 53927 0.1276 0.3172 0.24927 2006 7 12 53928 0.1275 0.3159 0.25005 2006 7 13 53929 0.1274 0.3146 0.25055 2006 7 14 53930 0.1273 0.3133 0.25074 2006 7 15 53931 0.1271 0.3120 0.25068 2006 7 16 53932 0.1269 0.3107 0.25050 2006 7 17 53933 0.1267 0.3094 0.25035 2006 7 18 53934 0.1265 0.3081 0.25038 2006 7 19 53935 0.1263 0.3068 0.25068 2006 7 20 53936 0.1260 0.3055 0.25127 2006 7 21 53937 0.1257 0.3042 0.25211 2006 7 22 53938 0.1254 0.3028 0.25314 2006 7 23 53939 0.1250 0.3015 0.25424 2006 7 24 53940 0.1247 0.3002 0.25531 2006 7 25 53941 0.1243 0.2989 0.25628 2006 7 26 53942 0.1239 0.2976 0.25709 2006 7 27 53943 0.1234 0.2963 0.25772 2006 7 28 53944 0.1230 0.2949 0.25819 2006 7 29 53945 0.1225 0.2936 0.25853 2006 7 30 53946 0.1220 0.2923 0.25880 2006 7 31 53947 0.1214 0.2910 0.25906 2006 8 1 53948 0.1209 0.2897 0.25939 2006 8 2 53949 0.1203 0.2884 0.25983 2006 8 3 53950 0.1197 0.2871 0.26042 2006 8 4 53951 0.1190 0.2859 0.26118 2006 8 5 53952 0.1184 0.2846 0.26209 2006 8 6 53953 0.1177 0.2833 0.26311 2006 8 7 53954 0.1170 0.2820 0.26412 2006 8 8 53955 0.1162 0.2808 0.26500 2006 8 9 53956 0.1155 0.2795 0.26562 2006 8 10 53957 0.1147 0.2783 0.26591 2006 8 11 53958 0.1139 0.2771 0.26589 2006 8 12 53959 0.1130 0.2758 0.26567 2006 8 13 53960 0.1121 0.2746 0.26543 2006 8 14 53961 0.1112 0.2734 0.26533 2006 8 15 53962 0.1103 0.2722 0.26549 2006 8 16 53963 0.1094 0.2711 0.26595 2006 8 17 53964 0.1084 0.2699 0.26667 2006 8 18 53965 0.1074 0.2688 0.26755 2006 8 19 53966 0.1064 0.2676 0.26848 2006 8 20 53967 0.1053 0.2665 0.26936 2006 8 21 53968 0.1042 0.2654 0.27011 2006 8 22 53969 0.1031 0.2643 0.27066 2006 8 23 53970 0.1020 0.2632 0.27099 2006 8 24 53971 0.1008 0.2622 0.27110 2006 8 25 53972 0.0996 0.2611 0.27100 2006 8 26 53973 0.0984 0.2601 0.27075 2006 8 27 53974 0.0972 0.2591 0.27043 2006 8 28 53975 0.0959 0.2581 0.27010 2006 8 29 53976 0.0946 0.2571 0.26985 2006 8 30 53977 0.0933 0.2561 0.26972 2006 8 31 53978 0.0919 0.2552 0.26974 2006 9 1 53979 0.0905 0.2543 0.26992 2006 9 2 53980 0.0891 0.2534 0.27020 2006 9 3 53981 0.0877 0.2525 0.27051 2006 9 4 53982 0.0863 0.2517 0.27072 2006 9 5 53983 0.0848 0.2508 0.27073 2006 9 6 53984 0.0833 0.2500 0.27043 2006 9 7 53985 0.0818 0.2492 0.26981 2006 9 8 53986 0.0802 0.2485 0.26894 2006 9 9 53987 0.0787 0.2477 0.26798 2006 9 10 53988 0.0771 0.2470 0.26712 2006 9 11 53989 0.0755 0.2463 0.26651 2006 9 12 53990 0.0738 0.2457 0.26623 2006 9 13 53991 0.0721 0.2450 0.26627 2006 9 14 53992 0.0705 0.2444 0.26655 2006 9 15 53993 0.0687 0.2438 0.26694 2006 9 16 53994 0.0670 0.2433 0.26734 2006 9 17 53995 0.0653 0.2427 0.26763 2006 9 18 53996 0.0635 0.2422 0.26774 2006 9 19 53997 0.0617 0.2418 0.26767 2006 9 20 53998 0.0599 0.2413 0.26740 2006 9 21 53999 0.0580 0.2409 0.26700 2006 9 22 54000 0.0562 0.2405 0.26652 2006 9 23 54001 0.0543 0.2401 0.26598 2006 9 24 54002 0.0524 0.2398 0.26545 2006 9 25 54003 0.0505 0.2395 0.26505 2006 9 26 54004 0.0486 0.2392 0.26483 2006 9 27 54005 0.0466 0.2390 0.26481 2006 9 28 54006 0.0447 0.2388 0.26495 2006 9 29 54007 0.0427 0.2386 0.26517 2006 9 30 54008 0.0407 0.2385 0.26538 2006 10 1 54009 0.0387 0.2383 0.26554 2006 10 2 54010 0.0366 0.2383 0.26550 2006 10 3 54011 0.0346 0.2382 0.26519 2006 10 4 54012 0.0325 0.2382 0.26449 2006 10 5 54013 0.0305 0.2382 0.26338 2006 10 6 54014 0.0284 0.2382 0.26196 2006 10 7 54015 0.0263 0.2383 0.26048 2006 10 8 54016 0.0242 0.2384 0.25915 2006 10 9 54017 0.0220 0.2386 0.25812 2006 10 10 54018 0.0199 0.2388 0.25746 2006 10 11 54019 0.0178 0.2390 0.25710 2006 10 12 54020 0.0156 0.2392 0.25694 2006 10 13 54021 0.0135 0.2395 0.25683 2006 10 14 54022 0.0113 0.2398 0.25665 2006 10 15 54023 0.0091 0.2402 0.25636 2006 10 16 54024 0.0069 0.2406 0.25596 2006 10 17 54025 0.0048 0.2410 0.25543 2006 10 18 54026 0.0026 0.2415 0.25477 2006 10 19 54027 0.0004 0.2419 0.25399 2006 10 20 54028 -0.0018 0.2425 0.25312 2006 10 21 54029 -0.0040 0.2430 0.25222 2006 10 22 54030 -0.0062 0.2436 0.25144 2006 10 23 54031 -0.0085 0.2443 0.25081 2006 10 24 54032 -0.0107 0.2449 0.25030 2006 10 25 54033 -0.0129 0.2456 0.24996 2006 10 26 54034 -0.0151 0.2464 0.24978 2006 10 27 54035 -0.0173 0.2471 0.24970 2006 10 28 54036 -0.0195 0.2479 0.24967 2006 10 29 54037 -0.0217 0.2488 0.24949 2006 10 30 54038 -0.0239 0.2497 0.24907 2006 10 31 54039 -0.0261 0.2506 0.24840 2006 11 1 54040 -0.0283 0.2515 0.24747 2006 11 2 54041 -0.0305 0.2525 0.24631 2006 11 3 54042 -0.0327 0.2535 0.24505 2006 11 4 54043 -0.0348 0.2545 0.24384 2006 11 5 54044 -0.0370 0.2556 0.24288 2006 11 6 54045 -0.0392 0.2567 0.24219 2006 11 7 54046 -0.0413 0.2579 0.24175 2006 11 8 54047 -0.0435 0.2591 0.24148 2006 11 9 54048 -0.0456 0.2603 0.24127 2006 11 10 54049 -0.0477 0.2616 0.24103 2006 11 11 54050 -0.0498 0.2628 0.24070 2006 11 12 54051 -0.0519 0.2642 0.24017 2006 11 13 54052 -0.0540 0.2655 0.23946 2006 11 14 54053 -0.0560 0.2669 0.23860 2006 11 15 54054 -0.0581 0.2683 0.23756 2006 11 16 54055 -0.0601 0.2698 0.23645 2006 11 17 54056 -0.0621 0.2712 0.23537 2006 11 18 54057 -0.0641 0.2727 0.23438 2006 11 19 54058 -0.0661 0.2743 0.23347 2006 11 20 54059 -0.0681 0.2759 0.23274 2006 11 21 54060 -0.0700 0.2775 0.23220 2006 11 22 54061 -0.0719 0.2791 0.23184 2006 11 23 54062 -0.0738 0.2808 0.23161 2006 11 24 54063 -0.0757 0.2825 0.23143 2006 11 25 54064 -0.0775 0.2842 0.23124 2006 11 26 54065 -0.0794 0.2859 0.23089 2006 11 27 54066 -0.0812 0.2877 0.23027 2006 11 28 54067 -0.0829 0.2895 0.22936 2006 11 29 54068 -0.0847 0.2914 0.22822 2006 11 30 54069 -0.0864 0.2932 0.22694 2006 12 1 54070 -0.0881 0.2951 0.22567 2006 12 2 54071 -0.0898 0.2970 0.22452 2006 12 3 54072 -0.0914 0.2990 0.22366 2006 12 4 54073 -0.0930 0.3010 0.22307 2006 12 5 54074 -0.0946 0.3029 0.22270 2006 12 6 54075 -0.0961 0.3050 0.22248 2006 12 7 54076 -0.0976 0.3070 0.22235 2006 12 8 54077 -0.0991 0.3091 0.22220 2006 12 9 54078 -0.1006 0.3112 0.22198 2006 12 10 54079 -0.1020 0.3133 0.22159 2006 12 11 54080 -0.1034 0.3154 0.22107 2006 12 12 54081 -0.1047 0.3176 0.22042 2006 12 13 54082 -0.1060 0.3198 0.21971 2006 12 14 54083 -0.1073 0.3220 0.21901 2006 12 15 54084 -0.1086 0.3242 0.21839 2006 12 16 54085 -0.1098 0.3264 0.21796 2006 12 17 54086 -0.1109 0.3287 0.21775 2006 12 18 54087 -0.1120 0.3310 0.21781 2006 12 19 54088 -0.1131 0.3333 0.21816 2006 12 20 54089 -0.1142 0.3356 0.21866 2006 12 21 54090 -0.1152 0.3379 0.21924 2006 12 22 54091 -0.1162 0.3403 0.21969 2006 12 23 54092 -0.1171 0.3427 0.21996 2006 12 24 54093 -0.1180 0.3451 0.22005 2006 12 25 54094 -0.1188 0.3475 0.21991 2006 12 26 54095 -0.1196 0.3499 0.21951 2006 12 27 54096 -0.1204 0.3523 0.21892 2006 12 28 54097 -0.1211 0.3547 0.21833 2006 12 29 54098 -0.1218 0.3572 0.21792 2006 12 30 54099 -0.1224 0.3597 0.21779 2006 12 31 54100 -0.1230 0.3621 0.21790 2007 1 1 54101 -0.1235 0.3646 0.21825 2007 1 2 54102 -0.1240 0.3671 0.21872 2007 1 3 54103 -0.1245 0.3696 0.21924 2007 1 4 54104 -0.1249 0.3722 0.21971 2007 1 5 54105 -0.1253 0.3747 0.22003 2007 1 6 54106 -0.1256 0.3772 0.22015 2007 1 7 54107 -0.1258 0.3798 0.22012 2007 1 8 54108 -0.1261 0.3823 0.21998 2007 1 9 54109 -0.1262 0.3849 0.21981 2007 1 10 54110 -0.1264 0.3874 0.21967 2007 1 11 54111 -0.1265 0.3900 0.21954 2007 1 12 54112 -0.1265 0.3926 0.21949 2007 1 13 54113 -0.1265 0.3951 0.21957 2007 1 14 54114 -0.1264 0.3977 0.21985 2007 1 15 54115 -0.1263 0.4003 0.22027 2007 1 16 54116 -0.1261 0.4029 0.22077 2007 1 17 54117 -0.1259 0.4055 0.22124 2007 1 18 54118 -0.1257 0.4080 0.22159 2007 1 19 54119 -0.1254 0.4106 0.22176 2007 1 20 54120 -0.1250 0.4132 0.22166 2007 1 21 54121 -0.1246 0.4158 0.22129 2007 1 22 54122 -0.1242 0.4183 0.22058 2007 1 23 54123 -0.1237 0.4209 0.21952 2007 1 24 54124 -0.1232 0.4235 0.21827 2007 1 25 54125 -0.1226 0.4260 0.21701 2007 1 26 54126 -0.1219 0.4286 0.21587 2007 1 27 54127 -0.1212 0.4312 0.21495 2007 1 28 54128 -0.1205 0.4337 0.21432 2007 1 29 54129 -0.1197 0.4362 0.21391 2007 1 30 54130 -0.1189 0.4388 0.21360 2007 1 31 54131 -0.1180 0.4413 0.21329 2007 2 1 54132 -0.1171 0.4438 0.21287 2007 2 2 54133 -0.1161 0.4463 0.21226 2007 2 3 54134 -0.1151 0.4488 0.21149 2007 2 4 54135 -0.1140 0.4513 0.21058 2007 2 5 54136 -0.1129 0.4538 0.20956 2007 2 6 54137 -0.1117 0.4562 0.20848 2007 2 7 54138 -0.1105 0.4587 0.20740 2007 2 8 54139 -0.1092 0.4611 0.20643 2007 2 9 54140 -0.1079 0.4635 0.20564 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) 53756 -55.50 .15 -1.30 .34 53757 -55.91 .18 -1.49 .18 53758 -56.38 .18 -1.88 .18 53759 -56.67 .14 -2.22 .24 53760 -56.76 .21 -2.32 .17 53761 -56.88 .21 -2.29 .17 53762 -57.11 .21 -2.37 .17 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 53756 0.053 0.060 -0.334 0.340 53757 0.022 0.072 -0.373 0.180 53758 0.020 0.072 -0.405 0.180 53759 0.038 0.056 -0.402 0.240 53760 0.057 0.084 -0.393 0.170 53761 0.073 0.084 -0.411 0.170 53762 0.091 0.084 -0.426 0.170 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 **************************************************************************