**********************************************************************
* *
* I E R S B U L L E T I N - A *
* *
* Rapid Service/Prediction of Earth Orientation *
**********************************************************************
27 April 2006 Vol. XIX No. 017
______________________________________________________________________
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
**********************************************************************
* 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 4 21 53846 .10371 .00003 .36410 .00005 .249671 .000014
6 4 22 53847 .10441 .00003 .36376 .00005 .248795 .000015
6 4 23 53848 .10508 .00003 .36338 .00004 .247588 .000017
6 4 24 53849 .10566 .00003 .36286 .00003 .246046 .000017
6 4 25 53850 .10599 .00003 .36228 .00003 .244288 .000017
6 4 26 53851 .10624 .00003 .36186 .00003 .242468 .000016
6 4 27 53852 .10653 .00003 .36164 .00002 .240671 .000015
_______________________________________________________________________
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 = .0433 - .0981 cos A + .1373 sin A + .1541 cos C - .1145 sin C
y = .3556 + .1247 cos A + .0955 sin A - .1145 cos C - .1541 sin C
UT1-UTC = .2622 - .00043 (MJD - 53857) - (UT2-UT1)
where A = 2*pi*(MJD-53852)/365.25 and C = 2*pi*(MJD-53852)/435.
TAI-UTC(MJD 53853) = 33.0
The accuracy may be estimated from the expressions:
S x,y = 0.00068 (MJD-53852)**0.80 S t = 0.00025 (MJD-53852)**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 4 28 53853 0.1069 0.3615 0.23901
2006 4 29 53854 0.1073 0.3612 0.23762
2006 4 30 53855 0.1078 0.3608 0.23656
2006 5 1 53856 0.1082 0.3604 0.23574
2006 5 2 53857 0.1087 0.3599 0.23503
2006 5 3 53858 0.1092 0.3594 0.23432
2006 5 4 53859 0.1097 0.3588 0.23353
2006 5 5 53860 0.1102 0.3582 0.23264
2006 5 6 53861 0.1107 0.3576 0.23170
2006 5 7 53862 0.1112 0.3569 0.23069
2006 5 8 53863 0.1116 0.3562 0.22961
2006 5 9 53864 0.1121 0.3555 0.22849
2006 5 10 53865 0.1126 0.3547 0.22740
2006 5 11 53866 0.1130 0.3540 0.22642
2006 5 12 53867 0.1134 0.3532 0.22559
2006 5 13 53868 0.1138 0.3524 0.22497
2006 5 14 53869 0.1142 0.3516 0.22457
2006 5 15 53870 0.1146 0.3508 0.22436
2006 5 16 53871 0.1150 0.3500 0.22427
2006 5 17 53872 0.1154 0.3492 0.22421
2006 5 18 53873 0.1157 0.3484 0.22404
2006 5 19 53874 0.1160 0.3475 0.22365
2006 5 20 53875 0.1163 0.3467 0.22299
2006 5 21 53876 0.1166 0.3458 0.22206
2006 5 22 53877 0.1169 0.3449 0.22094
2006 5 23 53878 0.1172 0.3441 0.21977
2006 5 24 53879 0.1175 0.3432 0.21868
2006 5 25 53880 0.1177 0.3423 0.21784
2006 5 26 53881 0.1180 0.3414 0.21733
2006 5 27 53882 0.1182 0.3405 0.21715
2006 5 28 53883 0.1184 0.3396 0.21725
2006 5 29 53884 0.1186 0.3387 0.21752
2006 5 30 53885 0.1188 0.3377 0.21783
2006 5 31 53886 0.1189 0.3368 0.21808
2006 6 1 53887 0.1191 0.3359 0.21818
2006 6 2 53888 0.1192 0.3349 0.21813
2006 6 3 53889 0.1194 0.3340 0.21791
2006 6 4 53890 0.1195 0.3330 0.21756
2006 6 5 53891 0.1196 0.3321 0.21713
2006 6 6 53892 0.1197 0.3311 0.21668
2006 6 7 53893 0.1198 0.3301 0.21627
2006 6 8 53894 0.1198 0.3291 0.21597
2006 6 9 53895 0.1199 0.3281 0.21583
2006 6 10 53896 0.1199 0.3271 0.21589
2006 6 11 53897 0.1199 0.3261 0.21615
2006 6 12 53898 0.1199 0.3251 0.21655
2006 6 13 53899 0.1199 0.3241 0.21699
2006 6 14 53900 0.1199 0.3231 0.21736
2006 6 15 53901 0.1199 0.3220 0.21753
2006 6 16 53902 0.1199 0.3210 0.21744
2006 6 17 53903 0.1198 0.3199 0.21708
2006 6 18 53904 0.1197 0.3189 0.21651
2006 6 19 53905 0.1197 0.3178 0.21586
2006 6 20 53906 0.1196 0.3168 0.21526
2006 6 21 53907 0.1195 0.3157 0.21486
2006 6 22 53908 0.1193 0.3146 0.21474
2006 6 23 53909 0.1192 0.3135 0.21493
2006 6 24 53910 0.1190 0.3124 0.21539
2006 6 25 53911 0.1189 0.3113 0.21604
2006 6 26 53912 0.1187 0.3102 0.21676
2006 6 27 53913 0.1185 0.3091 0.21746
2006 6 28 53914 0.1183 0.3080 0.21805
2006 6 29 53915 0.1181 0.3069 0.21850
2006 6 30 53916 0.1178 0.3058 0.21880
2006 7 1 53917 0.1176 0.3047 0.21897
2006 7 2 53918 0.1173 0.3036 0.21904
2006 7 3 53919 0.1171 0.3025 0.21907
2006 7 4 53920 0.1168 0.3014 0.21912
2006 7 5 53921 0.1165 0.3002 0.21925
2006 7 6 53922 0.1161 0.2991 0.21952
2006 7 7 53923 0.1158 0.2980 0.21997
2006 7 8 53924 0.1154 0.2968 0.22060
2006 7 9 53925 0.1151 0.2957 0.22139
2006 7 10 53926 0.1147 0.2946 0.22226
2006 7 11 53927 0.1143 0.2934 0.22308
2006 7 12 53928 0.1139 0.2923 0.22373
2006 7 13 53929 0.1134 0.2912 0.22412
2006 7 14 53930 0.1130 0.2900 0.22420
2006 7 15 53931 0.1125 0.2889 0.22404
2006 7 16 53932 0.1120 0.2878 0.22376
2006 7 17 53933 0.1115 0.2866 0.22352
2006 7 18 53934 0.1110 0.2855 0.22345
2006 7 19 53935 0.1105 0.2844 0.22366
2006 7 20 53936 0.1099 0.2833 0.22415
2006 7 21 53937 0.1093 0.2821 0.22491
2006 7 22 53938 0.1087 0.2810 0.22583
2006 7 23 53939 0.1081 0.2799 0.22683
2006 7 24 53940 0.1075 0.2788 0.22781
2006 7 25 53941 0.1069 0.2777 0.22867
2006 7 26 53942 0.1062 0.2766 0.22938
2006 7 27 53943 0.1055 0.2755 0.22991
2006 7 28 53944 0.1048 0.2744 0.23026
2006 7 29 53945 0.1041 0.2733 0.23050
2006 7 30 53946 0.1034 0.2722 0.23066
2006 7 31 53947 0.1026 0.2712 0.23083
2006 8 1 53948 0.1019 0.2701 0.23105
2006 8 2 53949 0.1011 0.2690 0.23138
2006 8 3 53950 0.1002 0.2680 0.23186
2006 8 4 53951 0.0994 0.2669 0.23252
2006 8 5 53952 0.0986 0.2659 0.23333
2006 8 6 53953 0.0977 0.2649 0.23423
2006 8 7 53954 0.0968 0.2639 0.23512
2006 8 8 53955 0.0959 0.2629 0.23586
2006 8 9 53956 0.0949 0.2619 0.23634
2006 8 10 53957 0.0940 0.2609 0.23648
2006 8 11 53958 0.0930 0.2599 0.23623
2006 8 12 53959 0.0920 0.2590 0.23577
2006 8 13 53960 0.0910 0.2580 0.23528
2006 8 14 53961 0.0900 0.2571 0.23492
2006 8 15 53962 0.0889 0.2562 0.23484
2006 8 16 53963 0.0878 0.2553 0.23507
2006 8 17 53964 0.0867 0.2544 0.23558
2006 8 18 53965 0.0856 0.2535 0.23628
2006 8 19 53966 0.0844 0.2527 0.23707
2006 8 20 53967 0.0833 0.2518 0.23784
2006 8 21 53968 0.0821 0.2510 0.23852
2006 8 22 53969 0.0809 0.2502 0.23902
2006 8 23 53970 0.0796 0.2494 0.23934
2006 8 24 53971 0.0784 0.2486 0.23948
2006 8 25 53972 0.0771 0.2479 0.23947
2006 8 26 53973 0.0758 0.2471 0.23935
2006 8 27 53974 0.0745 0.2464 0.23921
2006 8 28 53975 0.0731 0.2457 0.23910
2006 8 29 53976 0.0717 0.2451 0.23908
2006 8 30 53977 0.0704 0.2444 0.23920
2006 8 31 53978 0.0689 0.2438 0.23947
2006 9 1 53979 0.0675 0.2432 0.23988
2006 9 2 53980 0.0661 0.2426 0.24040
2006 9 3 53981 0.0646 0.2420 0.24093
2006 9 4 53982 0.0631 0.2414 0.24136
2006 9 5 53983 0.0616 0.2409 0.24157
2006 9 6 53984 0.0600 0.2404 0.24143
2006 9 7 53985 0.0585 0.2400 0.24093
2006 9 8 53986 0.0569 0.2395 0.24011
2006 9 9 53987 0.0553 0.2391 0.23915
2006 9 10 53988 0.0536 0.2387 0.23824
2006 9 11 53989 0.0520 0.2383 0.23755
2006 9 12 53990 0.0503 0.2380 0.23718
2006 9 13 53991 0.0486 0.2376 0.23714
2006 9 14 53992 0.0469 0.2373 0.23734
2006 9 15 53993 0.0452 0.2371 0.23766
2006 9 16 53994 0.0435 0.2368 0.23800
2006 9 17 53995 0.0417 0.2366 0.23825
2006 9 18 53996 0.0399 0.2365 0.23834
2006 9 19 53997 0.0381 0.2363 0.23825
2006 9 20 53998 0.0363 0.2362 0.23797
2006 9 21 53999 0.0344 0.2361 0.23753
2006 9 22 54000 0.0326 0.2360 0.23698
2006 9 23 54001 0.0307 0.2360 0.23638
2006 9 24 54002 0.0288 0.2360 0.23580
2006 9 25 54003 0.0269 0.2360 0.23530
2006 9 26 54004 0.0250 0.2361 0.23494
2006 9 27 54005 0.0230 0.2362 0.23473
2006 9 28 54006 0.0211 0.2363 0.23468
2006 9 29 54007 0.0191 0.2364 0.23474
2006 9 30 54008 0.0171 0.2366 0.23485
2006 10 1 54009 0.0151 0.2369 0.23492
2006 10 2 54010 0.0131 0.2371 0.23481
2006 10 3 54011 0.0111 0.2374 0.23442
2006 10 4 54012 0.0091 0.2377 0.23367
2006 10 5 54013 0.0070 0.2381 0.23259
2006 10 6 54014 0.0050 0.2384 0.23127
2006 10 7 54015 0.0029 0.2389 0.22989
2006 10 8 54016 0.0008 0.2393 0.22864
2006 10 9 54017 -0.0013 0.2398 0.22769
2006 10 10 54018 -0.0034 0.2403 0.22708
2006 10 11 54019 -0.0055 0.2409 0.22677
2006 10 12 54020 -0.0076 0.2415 0.22666
2006 10 13 54021 -0.0097 0.2421 0.22661
2006 10 14 54022 -0.0119 0.2427 0.22651
2006 10 15 54023 -0.0140 0.2434 0.22627
2006 10 16 54024 -0.0161 0.2442 0.22587
2006 10 17 54025 -0.0183 0.2449 0.22528
2006 10 18 54026 -0.0204 0.2457 0.22453
2006 10 19 54027 -0.0226 0.2466 0.22367
2006 10 20 54028 -0.0247 0.2474 0.22275
2006 10 21 54029 -0.0269 0.2483 0.22185
2006 10 22 54030 -0.0290 0.2493 0.22102
2006 10 23 54031 -0.0312 0.2502 0.22032
2006 10 24 54032 -0.0333 0.2512 0.21980
2006 10 25 54033 -0.0355 0.2523 0.21944
2006 10 26 54034 -0.0376 0.2534 0.21924
2006 10 27 54035 -0.0397 0.2545 0.21912
2006 10 28 54036 -0.0419 0.2556 0.21900
2006 10 29 54037 -0.0440 0.2568 0.21878
2006 10 30 54038 -0.0461 0.2580 0.21834
2006 10 31 54039 -0.0482 0.2593 0.21761
2006 11 1 54040 -0.0504 0.2606 0.21656
2006 11 2 54041 -0.0524 0.2619 0.21525
2006 11 3 54042 -0.0545 0.2632 0.21380
2006 11 4 54043 -0.0566 0.2646 0.21241
2006 11 5 54044 -0.0587 0.2660 0.21123
2006 11 6 54045 -0.0608 0.2674 0.21037
2006 11 7 54046 -0.0629 0.2689 0.20985
2006 11 8 54047 -0.0650 0.2704 0.20960
2006 11 9 54048 -0.0670 0.2720 0.20949
2006 11 10 54049 -0.0690 0.2735 0.20940
2006 11 11 54050 -0.0710 0.2752 0.20924
2006 11 12 54051 -0.0730 0.2768 0.20893
2006 11 13 54052 -0.0750 0.2785 0.20848
2006 11 14 54053 -0.0770 0.2802 0.20789
2006 11 15 54054 -0.0789 0.2819 0.20721
2006 11 16 54055 -0.0808 0.2836 0.20648
2006 11 17 54056 -0.0827 0.2854 0.20577
2006 11 18 54057 -0.0846 0.2873 0.20516
2006 11 19 54058 -0.0864 0.2891 0.20471
2006 11 20 54059 -0.0882 0.2910 0.20444
2006 11 21 54060 -0.0900 0.2929 0.20436
2006 11 22 54061 -0.0918 0.2948 0.20443
2006 11 23 54062 -0.0935 0.2968 0.20460
2006 11 24 54063 -0.0952 0.2988 0.20477
2006 11 25 54064 -0.0969 0.3008 0.20485
2006 11 26 54065 -0.0985 0.3028 0.20477
2006 11 27 54066 -0.1002 0.3049 0.20446
2006 11 28 54067 -0.1017 0.3070 0.20389
2006 11 29 54068 -0.1033 0.3091 0.20305
2006 11 30 54069 -0.1048 0.3113 0.20204
2006 12 1 54070 -0.1063 0.3134 0.20102
2006 12 2 54071 -0.1077 0.3156 0.20017
2006 12 3 54072 -0.1092 0.3178 0.19957
2006 12 4 54073 -0.1105 0.3201 0.19929
2006 12 5 54074 -0.1119 0.3223 0.19928
2006 12 6 54075 -0.1132 0.3246 0.19939
2006 12 7 54076 -0.1144 0.3269 0.19951
2006 12 8 54077 -0.1157 0.3292 0.19953
2006 12 9 54078 -0.1168 0.3316 0.19935
2006 12 10 54079 -0.1180 0.3339 0.19893
2006 12 11 54080 -0.1191 0.3363 0.19832
2006 12 12 54081 -0.1201 0.3387 0.19756
2006 12 13 54082 -0.1211 0.3411 0.19672
2006 12 14 54083 -0.1221 0.3435 0.19589
2006 12 15 54084 -0.1230 0.3460 0.19512
2006 12 16 54085 -0.1239 0.3484 0.19451
2006 12 17 54086 -0.1247 0.3509 0.19410
2006 12 18 54087 -0.1255 0.3534 0.19387
2006 12 19 54088 -0.1263 0.3559 0.19379
2006 12 20 54089 -0.1269 0.3584 0.19388
2006 12 21 54090 -0.1276 0.3609 0.19403
2006 12 22 54091 -0.1282 0.3634 0.19406
2006 12 23 54092 -0.1287 0.3660 0.19391
2006 12 24 54093 -0.1292 0.3685 0.19350
2006 12 25 54094 -0.1297 0.3711 0.19287
2006 12 26 54095 -0.1301 0.3737 0.19210
2006 12 27 54096 -0.1304 0.3762 0.19125
2006 12 28 54097 -0.1307 0.3788 0.19042
2006 12 29 54098 -0.1310 0.3814 0.18970
2006 12 30 54099 -0.1311 0.3840 0.18929
2006 12 31 54100 -0.1313 0.3866 0.18926
2007 1 1 54101 -0.1314 0.3892 0.18956
2007 1 2 54102 -0.1314 0.3918 0.19007
2007 1 3 54103 -0.1314 0.3944 0.19061
2007 1 4 54104 -0.1313 0.3970 0.19104
2007 1 5 54105 -0.1312 0.3997 0.19125
2007 1 6 54106 -0.1310 0.4023 0.19122
2007 1 7 54107 -0.1308 0.4049 0.19093
2007 1 8 54108 -0.1305 0.4075 0.19049
2007 1 9 54109 -0.1302 0.4101 0.18996
2007 1 10 54110 -0.1298 0.4127 0.18936
2007 1 11 54111 -0.1293 0.4153 0.18872
2007 1 12 54112 -0.1288 0.4179 0.18819
2007 1 13 54113 -0.1283 0.4205 0.18783
2007 1 14 54114 -0.1277 0.4231 0.18764
2007 1 15 54115 -0.1270 0.4257 0.18756
2007 1 16 54116 -0.1263 0.4283 0.18752
2007 1 17 54117 -0.1255 0.4309 0.18757
2007 1 18 54118 -0.1247 0.4334 0.18758
2007 1 19 54119 -0.1238 0.4360 0.18736
2007 1 20 54120 -0.1229 0.4385 0.18685
2007 1 21 54121 -0.1219 0.4411 0.18599
2007 1 22 54122 -0.1208 0.4436 0.18481
2007 1 23 54123 -0.1197 0.4461 0.18343
2007 1 24 54124 -0.1186 0.4486 0.18205
2007 1 25 54125 -0.1174 0.4511 0.18082
2007 1 26 54126 -0.1161 0.4535 0.17987
2007 1 27 54127 -0.1148 0.4560 0.17926
2007 1 28 54128 -0.1135 0.4584 0.17895
2007 1 29 54129 -0.1121 0.4609 0.17880
2007 1 30 54130 -0.1106 0.4633 0.17868
2007 1 31 54131 -0.1091 0.4657 0.17850
2007 2 1 54132 -0.1076 0.4680 0.17820
2007 2 2 54133 -0.1060 0.4704 0.17774
2007 2 3 54134 -0.1043 0.4727 0.17706
2007 2 4 54135 -0.1026 0.4750 0.17624
2007 2 5 54136 -0.1008 0.4773 0.17532
2007 2 6 54137 -0.0990 0.4796 0.17438
2007 2 7 54138 -0.0972 0.4819 0.17350
2007 2 8 54139 -0.0953 0.4841 0.17275
2007 2 9 54140 -0.0933 0.4863 0.17219
2007 2 10 54141 -0.0913 0.4885 0.17186
2007 2 11 54142 -0.0893 0.4906 0.17177
2007 2 12 54143 -0.0872 0.4928 0.17178
2007 2 13 54144 -0.0851 0.4949 0.17186
2007 2 14 54145 -0.0829 0.4969 0.17197
2007 2 15 54146 -0.0807 0.4990 0.17197
2007 2 16 54147 -0.0785 0.5010 0.17170
2007 2 17 54148 -0.0762 0.5030 0.17112
2007 2 18 54149 -0.0738 0.5050 0.17018
2007 2 19 54150 -0.0715 0.5069 0.16894
2007 2 20 54151 -0.0691 0.5088 0.16759
2007 2 21 54152 -0.0666 0.5107 0.16628
2007 2 22 54153 -0.0641 0.5125 0.16523
2007 2 23 54154 -0.0616 0.5144 0.16452
2007 2 24 54155 -0.0590 0.5161 0.16410
2007 2 25 54156 -0.0564 0.5179 0.16392
2007 2 26 54157 -0.0538 0.5196 0.16391
2007 2 27 54158 -0.0511 0.5213 0.16395
2007 2 28 54159 -0.0484 0.5229 0.16393
2007 3 1 54160 -0.0457 0.5245 0.16375
2007 3 2 54161 -0.0429 0.5261 0.16334
2007 3 3 54162 -0.0401 0.5277 0.16270
2007 3 4 54163 -0.0373 0.5292 0.16190
2007 3 5 54164 -0.0344 0.5306 0.16100
2007 3 6 54165 -0.0315 0.5321 0.16010
2007 3 7 54166 -0.0286 0.5335 0.15922
2007 3 8 54167 -0.0256 0.5348 0.15839
2007 3 9 54168 -0.0227 0.5361 0.15765
2007 3 10 54169 -0.0197 0.5374 0.15706
2007 3 11 54170 -0.0167 0.5387 0.15663
2007 3 12 54171 -0.0136 0.5399 0.15634
2007 3 13 54172 -0.0106 0.5410 0.15610
2007 3 14 54173 -0.0075 0.5421 0.15580
2007 3 15 54174 -0.0044 0.5432 0.15533
2007 3 16 54175 -0.0012 0.5443 0.15456
2007 3 17 54176 0.0019 0.5452 0.15343
2007 3 18 54177 0.0051 0.5462 0.15199
2007 3 19 54178 0.0083 0.5471 0.15040
2007 3 20 54179 0.0115 0.5480 0.14882
2007 3 21 54180 0.0147 0.5488 0.14742
2007 3 22 54181 0.0179 0.5496 0.14632
2007 3 23 54182 0.0211 0.5503 0.14553
2007 3 24 54183 0.0244 0.5510 0.14500
2007 3 25 54184 0.0277 0.5517 0.14469
2007 3 26 54185 0.0309 0.5523 0.14445
2007 3 27 54186 0.0342 0.5528 0.14411
2007 3 28 54187 0.0375 0.5534 0.14361
2007 3 29 54188 0.0408 0.5538 0.14296
2007 3 30 54189 0.0442 0.5543 0.14216
2007 3 31 54190 0.0475 0.5546 0.14127
2007 4 1 54191 0.0508 0.5550 0.14026
2007 4 2 54192 0.0541 0.5553 0.13920
2007 4 3 54193 0.0575 0.5555 0.13824
2007 4 4 54194 0.0608 0.5557 0.13745
2007 4 5 54195 0.0641 0.5559 0.13685
2007 4 6 54196 0.0675 0.5560 0.13645
2007 4 7 54197 0.0708 0.5560 0.13622
2007 4 8 54198 0.0742 0.5560 0.13615
2007 4 9 54199 0.0775 0.5560 0.13611
2007 4 10 54200 0.0809 0.5559 0.13598
2007 4 11 54201 0.0842 0.5558 0.13565
2007 4 12 54202 0.0875 0.5556 0.13504
2007 4 13 54203 0.0909 0.5553 0.13409
2007 4 14 54204 0.0942 0.5551 0.13283
2007 4 15 54205 0.0975 0.5547 0.13126
2007 4 16 54206 0.1008 0.5544 0.12956
2007 4 17 54207 0.1041 0.5539 0.12791
2007 4 18 54208 0.1074 0.5535 0.12643
2007 4 19 54209 0.1107 0.5530 0.12529
2007 4 20 54210 0.1140 0.5524 0.12452
2007 4 21 54211 0.1173 0.5518 0.12401
2007 4 22 54212 0.1205 0.5511 0.12358
2007 4 23 54213 0.1238 0.5504 0.12315
2007 4 24 54214 0.1270 0.5496 0.12261
2007 4 25 54215 0.1302 0.5488 0.12192
2007 4 26 54216 0.1334 0.5480 0.12109
2007 4 27 54217 0.1366 0.5471 0.12016
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)
53833 -53.58 .13 -5.83 .34
53834 -53.39 .11 -5.70 .34
53835 -53.37 .11 -5.46 .34
53836 -53.49 .10 -5.15 .34
53837 -53.65 .10 -4.99 .34
53838 -53.81 .10 -5.11 .34
IAU2000A Celestial Pole Offset Series
MJD dX error dY error
(msec. of arc)
53833 0.108 0.052 -0.400 0.340
53834 0.102 0.044 -0.394 0.340
53835 0.087 0.044 -0.381 0.340
53836 0.071 0.040 -0.362 0.340
53837 0.054 0.040 -0.367 0.340
53838 0.030 0.040 -0.385 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.
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Important Notices - Important Notices - Important Notices
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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
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Important Notice - IAU 2000 Resolution Compliancy Information
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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.
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Important Notice - IAU 2000 Resolution Compliancy Information
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