**********************************************************************
* *
* I E R S B U L L E T I N - A *
* *
* Rapid Service/Prediction of Earth Orientation *
**********************************************************************
11 May 2006 Vol. XIX No. 019
______________________________________________________________________
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 5 53860 .10923 .00003 .35685 .00005 .232637 .000017
6 5 6 53861 .10880 .00003 .35560 .00005 .231511 .000019
6 5 7 53862 .10861 .00003 .35440 .00005 .230232 .000020
6 5 8 53863 .10836 .00003 .35349 .00004 .228859 .000020
6 5 9 53864 .10804 .00003 .35278 .00004 .227402 .000017
6 5 10 53865 .10775 .00003 .35215 .00003 .225892 .000015
6 5 11 53866 .10757 .00003 .35164 .00003 .224341 .000014
_______________________________________________________________________
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 = .0391 - .0605 cos A + .1560 sin A + .1258 cos C - .1436 sin C
y = .3556 + .1430 cos A + .0608 sin A - .1436 cos C - .1258 sin C
UT1-UTC = .2407 - .00044 (MJD - 53871) - (UT2-UT1)
where A = 2*pi*(MJD-53866)/365.25 and C = 2*pi*(MJD-53866)/435.
TAI-UTC(MJD 53867) = 33.0
The accuracy may be estimated from the expressions:
S x,y = 0.00068 (MJD-53866)**0.80 S t = 0.00025 (MJD-53866)**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 12 53867 0.1076 0.3511 0.22277
2006 5 13 53868 0.1077 0.3506 0.22130
2006 5 14 53869 0.1078 0.3499 0.22002
2006 5 15 53870 0.1080 0.3493 0.21894
2006 5 16 53871 0.1083 0.3485 0.21798
2006 5 17 53872 0.1085 0.3478 0.21705
2006 5 18 53873 0.1088 0.3470 0.21604
2006 5 19 53874 0.1091 0.3462 0.21489
2006 5 20 53875 0.1094 0.3453 0.21361
2006 5 21 53876 0.1097 0.3445 0.21213
2006 5 22 53877 0.1100 0.3436 0.21050
2006 5 23 53878 0.1103 0.3428 0.20882
2006 5 24 53879 0.1106 0.3419 0.20725
2006 5 25 53880 0.1109 0.3410 0.20593
2006 5 26 53881 0.1112 0.3401 0.20494
2006 5 27 53882 0.1115 0.3392 0.20432
2006 5 28 53883 0.1118 0.3383 0.20401
2006 5 29 53884 0.1121 0.3374 0.20390
2006 5 30 53885 0.1123 0.3364 0.20387
2006 5 31 53886 0.1126 0.3355 0.20382
2006 6 1 53887 0.1128 0.3346 0.20370
2006 6 2 53888 0.1130 0.3336 0.20346
2006 6 3 53889 0.1132 0.3327 0.20309
2006 6 4 53890 0.1134 0.3317 0.20262
2006 6 5 53891 0.1135 0.3307 0.20208
2006 6 6 53892 0.1137 0.3298 0.20152
2006 6 7 53893 0.1138 0.3288 0.20102
2006 6 8 53894 0.1140 0.3278 0.20063
2006 6 9 53895 0.1141 0.3268 0.20039
2006 6 10 53896 0.1142 0.3258 0.20036
2006 6 11 53897 0.1142 0.3248 0.20053
2006 6 12 53898 0.1143 0.3238 0.20085
2006 6 13 53899 0.1143 0.3228 0.20124
2006 6 14 53900 0.1144 0.3218 0.20158
2006 6 15 53901 0.1144 0.3208 0.20175
2006 6 16 53902 0.1144 0.3198 0.20168
2006 6 17 53903 0.1144 0.3187 0.20136
2006 6 18 53904 0.1144 0.3177 0.20086
2006 6 19 53905 0.1143 0.3167 0.20029
2006 6 20 53906 0.1142 0.3156 0.19979
2006 6 21 53907 0.1142 0.3146 0.19946
2006 6 22 53908 0.1141 0.3135 0.19940
2006 6 23 53909 0.1140 0.3124 0.19962
2006 6 24 53910 0.1139 0.3114 0.20010
2006 6 25 53911 0.1137 0.3103 0.20074
2006 6 26 53912 0.1136 0.3092 0.20145
2006 6 27 53913 0.1134 0.3082 0.20213
2006 6 28 53914 0.1132 0.3071 0.20269
2006 6 29 53915 0.1130 0.3060 0.20310
2006 6 30 53916 0.1128 0.3049 0.20335
2006 7 1 53917 0.1126 0.3038 0.20345
2006 7 2 53918 0.1124 0.3027 0.20345
2006 7 3 53919 0.1121 0.3016 0.20340
2006 7 4 53920 0.1118 0.3005 0.20336
2006 7 5 53921 0.1116 0.2994 0.20340
2006 7 6 53922 0.1113 0.2983 0.20357
2006 7 7 53923 0.1110 0.2972 0.20391
2006 7 8 53924 0.1106 0.2961 0.20444
2006 7 9 53925 0.1103 0.2950 0.20512
2006 7 10 53926 0.1099 0.2939 0.20587
2006 7 11 53927 0.1095 0.2928 0.20658
2006 7 12 53928 0.1091 0.2917 0.20712
2006 7 13 53929 0.1087 0.2906 0.20738
2006 7 14 53930 0.1083 0.2895 0.20735
2006 7 15 53931 0.1078 0.2884 0.20707
2006 7 16 53932 0.1074 0.2873 0.20669
2006 7 17 53933 0.1069 0.2862 0.20634
2006 7 18 53934 0.1064 0.2851 0.20618
2006 7 19 53935 0.1059 0.2840 0.20629
2006 7 20 53936 0.1053 0.2829 0.20670
2006 7 21 53937 0.1048 0.2818 0.20738
2006 7 22 53938 0.1042 0.2807 0.20824
2006 7 23 53939 0.1036 0.2796 0.20918
2006 7 24 53940 0.1030 0.2786 0.21009
2006 7 25 53941 0.1024 0.2775 0.21090
2006 7 26 53942 0.1017 0.2764 0.21155
2006 7 27 53943 0.1011 0.2753 0.21202
2006 7 28 53944 0.1004 0.2743 0.21232
2006 7 29 53945 0.0997 0.2732 0.21249
2006 7 30 53946 0.0990 0.2722 0.21258
2006 7 31 53947 0.0982 0.2712 0.21267
2006 8 1 53948 0.0975 0.2701 0.21282
2006 8 2 53949 0.0967 0.2691 0.21309
2006 8 3 53950 0.0959 0.2681 0.21351
2006 8 4 53951 0.0951 0.2671 0.21410
2006 8 5 53952 0.0942 0.2661 0.21485
2006 8 6 53953 0.0934 0.2651 0.21570
2006 8 7 53954 0.0925 0.2641 0.21653
2006 8 8 53955 0.0916 0.2631 0.21723
2006 8 9 53956 0.0907 0.2622 0.21765
2006 8 10 53957 0.0897 0.2612 0.21773
2006 8 11 53958 0.0888 0.2603 0.21748
2006 8 12 53959 0.0878 0.2594 0.21701
2006 8 13 53960 0.0868 0.2585 0.21650
2006 8 14 53961 0.0858 0.2576 0.21613
2006 8 15 53962 0.0847 0.2567 0.21602
2006 8 16 53963 0.0837 0.2558 0.21622
2006 8 17 53964 0.0826 0.2550 0.21671
2006 8 18 53965 0.0815 0.2541 0.21738
2006 8 19 53966 0.0804 0.2533 0.21814
2006 8 20 53967 0.0792 0.2525 0.21889
2006 8 21 53968 0.0780 0.2517 0.21954
2006 8 22 53969 0.0768 0.2509 0.22002
2006 8 23 53970 0.0756 0.2502 0.22032
2006 8 24 53971 0.0744 0.2494 0.22044
2006 8 25 53972 0.0731 0.2487 0.22032
2006 8 26 53973 0.0718 0.2480 0.22010
2006 8 27 53974 0.0705 0.2473 0.21986
2006 8 28 53975 0.0692 0.2467 0.21966
2006 8 29 53976 0.0679 0.2460 0.21956
2006 8 30 53977 0.0665 0.2454 0.21959
2006 8 31 53978 0.0651 0.2448 0.21978
2006 9 1 53979 0.0637 0.2442 0.22012
2006 9 2 53980 0.0623 0.2436 0.22056
2006 9 3 53981 0.0608 0.2431 0.22103
2006 9 4 53982 0.0593 0.2426 0.22140
2006 9 5 53983 0.0578 0.2421 0.22155
2006 9 6 53984 0.0563 0.2416 0.22136
2006 9 7 53985 0.0548 0.2412 0.22080
2006 9 8 53986 0.0532 0.2408 0.21994
2006 9 9 53987 0.0516 0.2404 0.21894
2006 9 10 53988 0.0500 0.2400 0.21799
2006 9 11 53989 0.0484 0.2396 0.21726
2006 9 12 53990 0.0468 0.2393 0.21686
2006 9 13 53991 0.0451 0.2390 0.21678
2006 9 14 53992 0.0434 0.2387 0.21695
2006 9 15 53993 0.0417 0.2385 0.21725
2006 9 16 53994 0.0400 0.2383 0.21756
2006 9 17 53995 0.0383 0.2381 0.21778
2006 9 18 53996 0.0365 0.2379 0.21785
2006 9 19 53997 0.0348 0.2378 0.21773
2006 9 20 53998 0.0330 0.2377 0.21743
2006 9 21 53999 0.0312 0.2376 0.21696
2006 9 22 54000 0.0293 0.2376 0.21639
2006 9 23 54001 0.0275 0.2376 0.21576
2006 9 24 54002 0.0256 0.2376 0.21515
2006 9 25 54003 0.0237 0.2376 0.21463
2006 9 26 54004 0.0219 0.2377 0.21424
2006 9 27 54005 0.0199 0.2378 0.21401
2006 9 28 54006 0.0180 0.2380 0.21393
2006 9 29 54007 0.0161 0.2381 0.21397
2006 9 30 54008 0.0141 0.2383 0.21406
2006 10 1 54009 0.0122 0.2386 0.21410
2006 10 2 54010 0.0102 0.2388 0.21397
2006 10 3 54011 0.0082 0.2391 0.21356
2006 10 4 54012 0.0062 0.2395 0.21280
2006 10 5 54013 0.0042 0.2398 0.21169
2006 10 6 54014 0.0022 0.2402 0.21035
2006 10 7 54015 0.0002 0.2406 0.20895
2006 10 8 54016 -0.0019 0.2411 0.20769
2006 10 9 54017 -0.0039 0.2416 0.20672
2006 10 10 54018 -0.0060 0.2421 0.20609
2006 10 11 54019 -0.0081 0.2427 0.20577
2006 10 12 54020 -0.0101 0.2433 0.20564
2006 10 13 54021 -0.0122 0.2439 0.20558
2006 10 14 54022 -0.0143 0.2446 0.20547
2006 10 15 54023 -0.0164 0.2453 0.20522
2006 10 16 54024 -0.0185 0.2460 0.20481
2006 10 17 54025 -0.0206 0.2468 0.20422
2006 10 18 54026 -0.0227 0.2476 0.20347
2006 10 19 54027 -0.0248 0.2485 0.20261
2006 10 20 54028 -0.0269 0.2493 0.20170
2006 10 21 54029 -0.0290 0.2502 0.20079
2006 10 22 54030 -0.0311 0.2512 0.19996
2006 10 23 54031 -0.0332 0.2522 0.19927
2006 10 24 54032 -0.0353 0.2532 0.19875
2006 10 25 54033 -0.0374 0.2542 0.19839
2006 10 26 54034 -0.0395 0.2553 0.19818
2006 10 27 54035 -0.0416 0.2564 0.19805
2006 10 28 54036 -0.0436 0.2576 0.19790
2006 10 29 54037 -0.0457 0.2587 0.19764
2006 10 30 54038 -0.0478 0.2600 0.19716
2006 10 31 54039 -0.0499 0.2612 0.19638
2006 11 1 54040 -0.0519 0.2625 0.19528
2006 11 2 54041 -0.0540 0.2638 0.19392
2006 11 3 54042 -0.0560 0.2652 0.19242
2006 11 4 54043 -0.0580 0.2666 0.19097
2006 11 5 54044 -0.0600 0.2680 0.18973
2006 11 6 54045 -0.0620 0.2694 0.18880
2006 11 7 54046 -0.0640 0.2709 0.18819
2006 11 8 54047 -0.0660 0.2724 0.18784
2006 11 9 54048 -0.0679 0.2740 0.18761
2006 11 10 54049 -0.0699 0.2756 0.18737
2006 11 11 54050 -0.0718 0.2772 0.18703
2006 11 12 54051 -0.0737 0.2788 0.18654
2006 11 13 54052 -0.0756 0.2805 0.18588
2006 11 14 54053 -0.0775 0.2822 0.18508
2006 11 15 54054 -0.0793 0.2839 0.18418
2006 11 16 54055 -0.0811 0.2857 0.18323
2006 11 17 54056 -0.0829 0.2875 0.18229
2006 11 18 54057 -0.0848 0.2893 0.18142
2006 11 19 54058 -0.0866 0.2912 0.18069
2006 11 20 54059 -0.0883 0.2931 0.18012
2006 11 21 54060 -0.0901 0.2950 0.17975
2006 11 22 54061 -0.0918 0.2969 0.17954
2006 11 23 54062 -0.0935 0.2989 0.17945
2006 11 24 54063 -0.0952 0.3008 0.17938
2006 11 25 54064 -0.0968 0.3029 0.17926
2006 11 26 54065 -0.0984 0.3049 0.17897
2006 11 27 54066 -0.1000 0.3070 0.17845
2006 11 28 54067 -0.1016 0.3091 0.17768
2006 11 29 54068 -0.1031 0.3112 0.17669
2006 11 30 54069 -0.1046 0.3133 0.17557
2006 12 1 54070 -0.1060 0.3155 0.17447
2006 12 2 54071 -0.1074 0.3177 0.17353
2006 12 3 54072 -0.1088 0.3199 0.17285
2006 12 4 54073 -0.1101 0.3221 0.17250
2006 12 5 54074 -0.1114 0.3244 0.17244
2006 12 6 54075 -0.1127 0.3267 0.17254
2006 12 7 54076 -0.1139 0.3290 0.17268
2006 12 8 54077 -0.1151 0.3313 0.17273
2006 12 9 54078 -0.1162 0.3336 0.17263
2006 12 10 54079 -0.1173 0.3360 0.17238
2006 12 11 54080 -0.1184 0.3383 0.17199
2006 12 12 54081 -0.1194 0.3407 0.17153
2006 12 13 54082 -0.1204 0.3431 0.17105
2006 12 14 54083 -0.1213 0.3455 0.17062
2006 12 15 54084 -0.1222 0.3480 0.17026
2006 12 16 54085 -0.1231 0.3504 0.17003
2006 12 17 54086 -0.1239 0.3529 0.16998
2006 12 18 54087 -0.1246 0.3554 0.17010
2006 12 19 54088 -0.1253 0.3579 0.17035
2006 12 20 54089 -0.1260 0.3604 0.17068
2006 12 21 54090 -0.1266 0.3629 0.17102
2006 12 22 54091 -0.1271 0.3654 0.17128
2006 12 23 54092 -0.1277 0.3680 0.17137
2006 12 24 54093 -0.1281 0.3705 0.17130
2006 12 25 54094 -0.1285 0.3731 0.17100
2006 12 26 54095 -0.1289 0.3756 0.17044
2006 12 27 54096 -0.1292 0.3782 0.16968
2006 12 28 54097 -0.1295 0.3808 0.16888
2006 12 29 54098 -0.1297 0.3834 0.16820
2006 12 30 54099 -0.1299 0.3859 0.16779
2006 12 31 54100 -0.1300 0.3885 0.16763
2007 1 1 54101 -0.1300 0.3911 0.16776
2007 1 2 54102 -0.1300 0.3937 0.16807
2007 1 3 54103 -0.1300 0.3963 0.16839
2007 1 4 54104 -0.1299 0.3989 0.16865
2007 1 5 54105 -0.1298 0.4015 0.16873
2007 1 6 54106 -0.1296 0.4041 0.16857
2007 1 7 54107 -0.1293 0.4067 0.16817
2007 1 8 54108 -0.1290 0.4093 0.16759
2007 1 9 54109 -0.1286 0.4119 0.16689
2007 1 10 54110 -0.1282 0.4145 0.16615
2007 1 11 54111 -0.1278 0.4171 0.16546
2007 1 12 54112 -0.1272 0.4197 0.16487
2007 1 13 54113 -0.1267 0.4223 0.16447
2007 1 14 54114 -0.1260 0.4249 0.16428
2007 1 15 54115 -0.1254 0.4274 0.16424
2007 1 16 54116 -0.1246 0.4300 0.16433
2007 1 17 54117 -0.1238 0.4326 0.16452
2007 1 18 54118 -0.1230 0.4351 0.16469
2007 1 19 54119 -0.1221 0.4376 0.16465
2007 1 20 54120 -0.1212 0.4402 0.16433
2007 1 21 54121 -0.1202 0.4427 0.16371
2007 1 22 54122 -0.1191 0.4452 0.16285
2007 1 23 54123 -0.1180 0.4477 0.16189
2007 1 24 54124 -0.1169 0.4502 0.16097
2007 1 25 54125 -0.1157 0.4526 0.16019
2007 1 26 54126 -0.1144 0.4551 0.15963
2007 1 27 54127 -0.1131 0.4575 0.15942
2007 1 28 54128 -0.1117 0.4599 0.15958
2007 1 29 54129 -0.1103 0.4623 0.16001
2007 1 30 54130 -0.1089 0.4647 0.16054
2007 1 31 54131 -0.1073 0.4671 0.16102
2007 2 1 54132 -0.1058 0.4694 0.16129
2007 2 2 54133 -0.1042 0.4717 0.16130
2007 2 3 54134 -0.1025 0.4740 0.16106
2007 2 4 54135 -0.1008 0.4763 0.16056
2007 2 5 54136 -0.0991 0.4786 0.15993
2007 2 6 54137 -0.0973 0.4808 0.15925
2007 2 7 54138 -0.0954 0.4831 0.15853
2007 2 8 54139 -0.0935 0.4853 0.15782
2007 2 9 54140 -0.0916 0.4874 0.15724
2007 2 10 54141 -0.0896 0.4896 0.15685
2007 2 11 54142 -0.0876 0.4917 0.15663
2007 2 12 54143 -0.0855 0.4938 0.15649
2007 2 13 54144 -0.0834 0.4959 0.15633
2007 2 14 54145 -0.0812 0.4979 0.15621
2007 2 15 54146 -0.0790 0.4999 0.15596
2007 2 16 54147 -0.0768 0.5019 0.15539
2007 2 17 54148 -0.0745 0.5039 0.15448
2007 2 18 54149 -0.0721 0.5058 0.15318
2007 2 19 54150 -0.0698 0.5077 0.15158
2007 2 20 54151 -0.0674 0.5096 0.14984
2007 2 21 54152 -0.0649 0.5114 0.14821
2007 2 22 54153 -0.0625 0.5132 0.14684
2007 2 23 54154 -0.0599 0.5150 0.14583
2007 2 24 54155 -0.0574 0.5167 0.14517
2007 2 25 54156 -0.0548 0.5184 0.14478
2007 2 26 54157 -0.0522 0.5201 0.14446
2007 2 27 54158 -0.0495 0.5217 0.14410
2007 2 28 54159 -0.0468 0.5233 0.14359
2007 3 1 54160 -0.0441 0.5249 0.14293
2007 3 2 54161 -0.0414 0.5264 0.14209
2007 3 3 54162 -0.0386 0.5279 0.14103
2007 3 4 54163 -0.0358 0.5294 0.13988
2007 3 5 54164 -0.0329 0.5308 0.13865
2007 3 6 54165 -0.0301 0.5322 0.13746
2007 3 7 54166 -0.0272 0.5335 0.13637
2007 3 8 54167 -0.0242 0.5348 0.13545
2007 3 9 54168 -0.0213 0.5361 0.13476
2007 3 10 54169 -0.0183 0.5373 0.13430
2007 3 11 54170 -0.0153 0.5385 0.13407
2007 3 12 54171 -0.0123 0.5397 0.13391
2007 3 13 54172 -0.0093 0.5408 0.13377
2007 3 14 54173 -0.0062 0.5418 0.13361
2007 3 15 54174 -0.0031 0.5429 0.13326
2007 3 16 54175 -0.0000 0.5438 0.13259
2007 3 17 54176 0.0031 0.5448 0.13159
2007 3 18 54177 0.0063 0.5457 0.13025
2007 3 19 54178 0.0094 0.5465 0.12866
2007 3 20 54179 0.0126 0.5474 0.12704
2007 3 21 54180 0.0158 0.5481 0.12557
2007 3 22 54181 0.0190 0.5489 0.12443
2007 3 23 54182 0.0222 0.5495 0.12367
2007 3 24 54183 0.0254 0.5502 0.12320
2007 3 25 54184 0.0287 0.5508 0.12290
2007 3 26 54185 0.0319 0.5513 0.12271
2007 3 27 54186 0.0352 0.5518 0.12249
2007 3 28 54187 0.0385 0.5523 0.12218
2007 3 29 54188 0.0417 0.5527 0.12171
2007 3 30 54189 0.0450 0.5531 0.12101
2007 3 31 54190 0.0483 0.5534 0.12012
2007 4 1 54191 0.0516 0.5537 0.11914
2007 4 2 54192 0.0549 0.5539 0.11811
2007 4 3 54193 0.0582 0.5541 0.11714
2007 4 4 54194 0.0615 0.5542 0.11625
2007 4 5 54195 0.0648 0.5543 0.11545
2007 4 6 54196 0.0682 0.5544 0.11474
2007 4 7 54197 0.0715 0.5544 0.11421
2007 4 8 54198 0.0748 0.5543 0.11382
2007 4 9 54199 0.0781 0.5542 0.11352
2007 4 10 54200 0.0814 0.5541 0.11323
2007 4 11 54201 0.0847 0.5539 0.11282
2007 4 12 54202 0.0880 0.5537 0.11221
2007 4 13 54203 0.0913 0.5534 0.11128
2007 4 14 54204 0.0946 0.5530 0.11001
2007 4 15 54205 0.0979 0.5527 0.10850
2007 4 16 54206 0.1012 0.5522 0.10692
2007 4 17 54207 0.1045 0.5518 0.10546
2007 4 18 54208 0.1077 0.5512 0.10426
2007 4 19 54209 0.1110 0.5507 0.10340
2007 4 20 54210 0.1142 0.5501 0.10284
2007 4 21 54211 0.1175 0.5494 0.10251
2007 4 22 54212 0.1207 0.5487 0.10233
2007 4 23 54213 0.1239 0.5479 0.10216
2007 4 24 54214 0.1271 0.5471 0.10183
2007 4 25 54215 0.1303 0.5462 0.10133
2007 4 26 54216 0.1335 0.5453 0.10070
2007 4 27 54217 0.1367 0.5444 0.09995
2007 4 28 54218 0.1398 0.5434 0.09918
2007 4 29 54219 0.1429 0.5423 0.09836
2007 4 30 54220 0.1461 0.5412 0.09755
2007 5 1 54221 0.1492 0.5401 0.09690
2007 5 2 54222 0.1522 0.5389 0.09647
2007 5 3 54223 0.1553 0.5377 0.09626
2007 5 4 54224 0.1583 0.5364 0.09625
2007 5 5 54225 0.1614 0.5351 0.09641
2007 5 6 54226 0.1644 0.5337 0.09669
2007 5 7 54227 0.1673 0.5323 0.09695
2007 5 8 54228 0.1703 0.5308 0.09706
2007 5 9 54229 0.1732 0.5293 0.09693
2007 5 10 54230 0.1761 0.5277 0.09649
2007 5 11 54231 0.1790 0.5261 0.09574
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)
53847 -53.02 .34 -6.64 .34
53848 -52.86 .13 -6.68 .34
53849 -52.83 .13 -6.51 .34
53850 -53.02 .74 -6.15 .34
53851 -53.40 .17 -5.82 .13
53852 -53.86 .17 -5.67 .13
53853 -54.31 .17 -5.72 .13
IAU2000A Celestial Pole Offset Series
MJD dX error dY error
(msec. of arc)
53847 -0.009 0.135 -0.423 0.340
53848 -0.017 0.052 -0.431 0.340
53849 -0.012 0.052 -0.434 0.340
53850 -0.014 0.294 -0.410 0.340
53851 -0.028 0.068 -0.391 0.130
53852 -0.050 0.068 -0.370 0.130
53853 -0.073 0.068 -0.361 0.130
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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