**********************************************************************
* *
* I E R S B U L L E T I N - A *
* *
* Rapid Service/Prediction of Earth Orientation *
**********************************************************************
20 July 2006 Vol. XIX No. 029
______________________________________________________________________
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 7 14 53930 .12462 .00003 .28458 .00003 .187822 .000018
6 7 15 53931 .12354 .00003 .28381 .00003 .186916 .000015
6 7 16 53932 .12272 .00002 .28287 .00003 .185820 .000017
6 7 17 53933 .12213 .00002 .28180 .00002 .184726 .000016
6 7 18 53934 .12165 .00001 .28079 .00002 .183797 .000016
6 7 19 53935 .12121 .00001 .27991 .00002 .183103 .000013
6 7 20 53936 .12076 .00001 .27901 .00002 .182669 .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 = .0530 + .1286 cos A + .1155 sin A - .0565 cos C - .1878 sin C
y = .3546 + .1104 cos A - .1156 sin A - .1878 cos C + .0565 sin C
UT1-UTC = .1523 - .00054 (MJD - 53941) - (UT2-UT1)
where A = 2*pi*(MJD-53936)/365.25 and C = 2*pi*(MJD-53936)/435.
TAI-UTC(MJD 53937) = 33.0
The accuracy may be estimated from the expressions:
S x,y = 0.00068 (MJD-53936)**0.80 S t = 0.00025 (MJD-53936)**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 7 21 53937 0.1203 0.2780 0.18247
2006 7 22 53938 0.1198 0.2769 0.18249
2006 7 23 53939 0.1191 0.2759 0.18263
2006 7 24 53940 0.1185 0.2747 0.18278
2006 7 25 53941 0.1178 0.2736 0.18285
2006 7 26 53942 0.1170 0.2725 0.18276
2006 7 27 53943 0.1163 0.2714 0.18244
2006 7 28 53944 0.1155 0.2702 0.18191
2006 7 29 53945 0.1146 0.2691 0.18125
2006 7 30 53946 0.1138 0.2680 0.18053
2006 7 31 53947 0.1129 0.2669 0.17984
2006 8 1 53948 0.1120 0.2658 0.17925
2006 8 2 53949 0.1111 0.2647 0.17875
2006 8 3 53950 0.1102 0.2637 0.17836
2006 8 4 53951 0.1092 0.2626 0.17810
2006 8 5 53952 0.1082 0.2616 0.17795
2006 8 6 53953 0.1072 0.2605 0.17787
2006 8 7 53954 0.1062 0.2595 0.17777
2006 8 8 53955 0.1051 0.2585 0.17755
2006 8 9 53956 0.1041 0.2575 0.17706
2006 8 10 53957 0.1030 0.2565 0.17627
2006 8 11 53958 0.1018 0.2555 0.17517
2006 8 12 53959 0.1007 0.2546 0.17391
2006 8 13 53960 0.0995 0.2536 0.17264
2006 8 14 53961 0.0984 0.2527 0.17157
2006 8 15 53962 0.0972 0.2518 0.17081
2006 8 16 53963 0.0959 0.2509 0.17040
2006 8 17 53964 0.0947 0.2500 0.17031
2006 8 18 53965 0.0934 0.2492 0.17043
2006 8 19 53966 0.0921 0.2483 0.17065
2006 8 20 53967 0.0908 0.2475 0.17086
2006 8 21 53968 0.0894 0.2467 0.17097
2006 8 22 53969 0.0881 0.2459 0.17092
2006 8 23 53970 0.0867 0.2451 0.17069
2006 8 24 53971 0.0852 0.2443 0.17026
2006 8 25 53972 0.0838 0.2436 0.16968
2006 8 26 53973 0.0823 0.2429 0.16899
2006 8 27 53974 0.0809 0.2422 0.16827
2006 8 28 53975 0.0793 0.2415 0.16758
2006 8 29 53976 0.0778 0.2409 0.16698
2006 8 30 53977 0.0763 0.2402 0.16649
2006 8 31 53978 0.0747 0.2396 0.16614
2006 9 1 53979 0.0731 0.2390 0.16593
2006 9 2 53980 0.0714 0.2385 0.16582
2006 9 3 53981 0.0698 0.2379 0.16573
2006 9 4 53982 0.0681 0.2374 0.16554
2006 9 5 53983 0.0664 0.2369 0.16512
2006 9 6 53984 0.0647 0.2365 0.16436
2006 9 7 53985 0.0630 0.2360 0.16324
2006 9 8 53986 0.0612 0.2356 0.16182
2006 9 9 53987 0.0595 0.2352 0.16026
2006 9 10 53988 0.0577 0.2348 0.15876
2006 9 11 53989 0.0558 0.2345 0.15751
2006 9 12 53990 0.0540 0.2342 0.15659
2006 9 13 53991 0.0521 0.2339 0.15601
2006 9 14 53992 0.0503 0.2336 0.15569
2006 9 15 53993 0.0484 0.2334 0.15552
2006 9 16 53994 0.0464 0.2332 0.15537
2006 9 17 53995 0.0445 0.2330 0.15514
2006 9 18 53996 0.0425 0.2329 0.15477
2006 9 19 53997 0.0406 0.2328 0.15423
2006 9 20 53998 0.0386 0.2327 0.15351
2006 9 21 53999 0.0366 0.2326 0.15262
2006 9 22 54000 0.0345 0.2326 0.15163
2006 9 23 54001 0.0325 0.2326 0.15059
2006 9 24 54002 0.0304 0.2326 0.14958
2006 9 25 54003 0.0284 0.2327 0.14866
2006 9 26 54004 0.0263 0.2328 0.14788
2006 9 27 54005 0.0242 0.2329 0.14728
2006 9 28 54006 0.0221 0.2331 0.14683
2006 9 29 54007 0.0199 0.2333 0.14652
2006 9 30 54008 0.0178 0.2335 0.14628
2006 10 1 54009 0.0156 0.2338 0.14600
2006 10 2 54010 0.0135 0.2341 0.14557
2006 10 3 54011 0.0113 0.2344 0.14486
2006 10 4 54012 0.0091 0.2348 0.14380
2006 10 5 54013 0.0069 0.2352 0.14239
2006 10 6 54014 0.0047 0.2356 0.14075
2006 10 7 54015 0.0025 0.2361 0.13905
2006 10 8 54016 0.0003 0.2366 0.13748
2006 10 9 54017 -0.0019 0.2371 0.13621
2006 10 10 54018 -0.0042 0.2377 0.13529
2006 10 11 54019 -0.0064 0.2383 0.13467
2006 10 12 54020 -0.0087 0.2389 0.13425
2006 10 13 54021 -0.0109 0.2396 0.13389
2006 10 14 54022 -0.0132 0.2403 0.13349
2006 10 15 54023 -0.0154 0.2410 0.13295
2006 10 16 54024 -0.0177 0.2418 0.13225
2006 10 17 54025 -0.0199 0.2426 0.13136
2006 10 18 54026 -0.0222 0.2434 0.13032
2006 10 19 54027 -0.0244 0.2443 0.12915
2006 10 20 54028 -0.0267 0.2452 0.12793
2006 10 21 54029 -0.0289 0.2462 0.12673
2006 10 22 54030 -0.0312 0.2472 0.12560
2006 10 23 54031 -0.0335 0.2482 0.12460
2006 10 24 54032 -0.0357 0.2492 0.12377
2006 10 25 54033 -0.0379 0.2503 0.12312
2006 10 26 54034 -0.0402 0.2514 0.12261
2006 10 27 54035 -0.0424 0.2526 0.12220
2006 10 28 54036 -0.0446 0.2538 0.12179
2006 10 29 54037 -0.0468 0.2550 0.12127
2006 10 30 54038 -0.0490 0.2563 0.12055
2006 10 31 54039 -0.0512 0.2576 0.11954
2006 11 1 54040 -0.0534 0.2589 0.11821
2006 11 2 54041 -0.0556 0.2603 0.11663
2006 11 3 54042 -0.0577 0.2617 0.11479
2006 11 4 54043 -0.0599 0.2631 0.11300
2006 11 5 54044 -0.0620 0.2646 0.11143
2006 11 6 54045 -0.0641 0.2661 0.11019
2006 11 7 54046 -0.0662 0.2676 0.10928
2006 11 8 54047 -0.0683 0.2692 0.10863
2006 11 9 54048 -0.0704 0.2708 0.10811
2006 11 10 54049 -0.0724 0.2724 0.10760
2006 11 11 54050 -0.0744 0.2741 0.10700
2006 11 12 54051 -0.0764 0.2758 0.10625
2006 11 13 54052 -0.0784 0.2775 0.10533
2006 11 14 54053 -0.0804 0.2792 0.10427
2006 11 15 54054 -0.0823 0.2810 0.10310
2006 11 16 54055 -0.0842 0.2829 0.10187
2006 11 17 54056 -0.0861 0.2847 0.10066
2006 11 18 54057 -0.0880 0.2866 0.09951
2006 11 19 54058 -0.0898 0.2885 0.09850
2006 11 20 54059 -0.0916 0.2904 0.09767
2006 11 21 54060 -0.0934 0.2924 0.09702
2006 11 22 54061 -0.0952 0.2944 0.09654
2006 11 23 54062 -0.0969 0.2964 0.09618
2006 11 24 54063 -0.0986 0.2985 0.09585
2006 11 25 54064 -0.1003 0.3005 0.09545
2006 11 26 54065 -0.1019 0.3026 0.09488
2006 11 27 54066 -0.1035 0.3048 0.09405
2006 11 28 54067 -0.1051 0.3069 0.09296
2006 11 29 54068 -0.1066 0.3091 0.09162
2006 11 30 54069 -0.1081 0.3113 0.09015
2006 12 1 54070 -0.1096 0.3135 0.08869
2006 12 2 54071 -0.1110 0.3158 0.08738
2006 12 3 54072 -0.1124 0.3181 0.08635
2006 12 4 54073 -0.1137 0.3203 0.08564
2006 12 5 54074 -0.1150 0.3227 0.08520
2006 12 6 54075 -0.1163 0.3250 0.08494
2006 12 7 54076 -0.1175 0.3274 0.08474
2006 12 8 54077 -0.1187 0.3297 0.08447
2006 12 9 54078 -0.1199 0.3321 0.08407
2006 12 10 54079 -0.1210 0.3346 0.08350
2006 12 11 54080 -0.1220 0.3370 0.08277
2006 12 12 54081 -0.1231 0.3394 0.08193
2006 12 13 54082 -0.1240 0.3419 0.08102
2006 12 14 54083 -0.1250 0.3444 0.08011
2006 12 15 54084 -0.1259 0.3469 0.07926
2006 12 16 54085 -0.1267 0.3494 0.07852
2006 12 17 54086 -0.1275 0.3520 0.07794
2006 12 18 54087 -0.1283 0.3545 0.07754
2006 12 19 54088 -0.1290 0.3571 0.07731
2006 12 20 54089 -0.1296 0.3596 0.07721
2006 12 21 54090 -0.1302 0.3622 0.07717
2006 12 22 54091 -0.1308 0.3648 0.07707
2006 12 23 54092 -0.1313 0.3674 0.07680
2006 12 24 54093 -0.1318 0.3700 0.07629
2006 12 25 54094 -0.1322 0.3727 0.07551
2006 12 26 54095 -0.1326 0.3753 0.07448
2006 12 27 54096 -0.1329 0.3779 0.07331
2006 12 28 54097 -0.1332 0.3806 0.07213
2006 12 29 54098 -0.1334 0.3832 0.07108
2006 12 30 54099 -0.1335 0.3859 0.07026
2006 12 31 54100 -0.1336 0.3886 0.06973
2007 1 1 54101 -0.1337 0.3912 0.06947
2007 1 2 54102 -0.1337 0.3939 0.06941
2007 1 3 54103 -0.1337 0.3966 0.06942
2007 1 4 54104 -0.1336 0.3992 0.06940
2007 1 5 54105 -0.1334 0.4019 0.06925
2007 1 6 54106 -0.1332 0.4046 0.06892
2007 1 7 54107 -0.1330 0.4073 0.06842
2007 1 8 54108 -0.1327 0.4099 0.06777
2007 1 9 54109 -0.1323 0.4126 0.06703
2007 1 10 54110 -0.1319 0.4153 0.06626
2007 1 11 54111 -0.1315 0.4179 0.06553
2007 1 12 54112 -0.1310 0.4206 0.06490
2007 1 13 54113 -0.1304 0.4233 0.06440
2007 1 14 54114 -0.1298 0.4259 0.06406
2007 1 15 54115 -0.1291 0.4286 0.06388
2007 1 16 54116 -0.1284 0.4312 0.06383
2007 1 17 54117 -0.1276 0.4338 0.06383
2007 1 18 54118 -0.1268 0.4364 0.06378
2007 1 19 54119 -0.1259 0.4391 0.06357
2007 1 20 54120 -0.1250 0.4417 0.06308
2007 1 21 54121 -0.1240 0.4442 0.06226
2007 1 22 54122 -0.1229 0.4468 0.06114
2007 1 23 54123 -0.1219 0.4494 0.05981
2007 1 24 54124 -0.1207 0.4519 0.05841
2007 1 25 54125 -0.1195 0.4545 0.05713
2007 1 26 54126 -0.1183 0.4570 0.05607
2007 1 27 54127 -0.1170 0.4595 0.05530
2007 1 28 54128 -0.1156 0.4620 0.05482
2007 1 29 54129 -0.1142 0.4645 0.05455
2007 1 30 54130 -0.1127 0.4669 0.05441
2007 1 31 54131 -0.1112 0.4694 0.05428
2007 2 1 54132 -0.1096 0.4718 0.05408
2007 2 2 54133 -0.1080 0.4742 0.05376
2007 2 3 54134 -0.1064 0.4766 0.05330
2007 2 4 54135 -0.1047 0.4789 0.05273
2007 2 5 54136 -0.1029 0.4813 0.05209
2007 2 6 54137 -0.1011 0.4836 0.05143
2007 2 7 54138 -0.0992 0.4859 0.05082
2007 2 8 54139 -0.0973 0.4882 0.05031
2007 2 9 54140 -0.0954 0.4904 0.04992
2007 2 10 54141 -0.0934 0.4926 0.04968
2007 2 11 54142 -0.0914 0.4948 0.04961
2007 2 12 54143 -0.0893 0.4970 0.04967
2007 2 13 54144 -0.0872 0.4991 0.04982
2007 2 14 54145 -0.0850 0.5012 0.04996
2007 2 15 54146 -0.0828 0.5033 0.04997
2007 2 16 54147 -0.0806 0.5054 0.04971
2007 2 17 54148 -0.0783 0.5074 0.04910
2007 2 18 54149 -0.0760 0.5094 0.04812
2007 2 19 54150 -0.0736 0.5114 0.04683
2007 2 20 54151 -0.0712 0.5133 0.04539
2007 2 21 54152 -0.0688 0.5152 0.04397
2007 2 22 54153 -0.0663 0.5171 0.04276
2007 2 23 54154 -0.0638 0.5189 0.04185
2007 2 24 54155 -0.0612 0.5207 0.04123
2007 2 25 54156 -0.0586 0.5225 0.04085
2007 2 26 54157 -0.0560 0.5242 0.04059
2007 2 27 54158 -0.0533 0.5259 0.04034
2007 2 28 54159 -0.0506 0.5276 0.04004
2007 3 1 54160 -0.0479 0.5292 0.03958
2007 3 2 54161 -0.0451 0.5308 0.03894
2007 3 3 54162 -0.0424 0.5324 0.03811
2007 3 4 54163 -0.0395 0.5339 0.03717
2007 3 5 54164 -0.0367 0.5354 0.03621
2007 3 6 54165 -0.0338 0.5368 0.03524
2007 3 7 54166 -0.0309 0.5382 0.03438
2007 3 8 54167 -0.0280 0.5396 0.03371
2007 3 9 54168 -0.0250 0.5409 0.03328
2007 3 10 54169 -0.0220 0.5422 0.03302
2007 3 11 54170 -0.0190 0.5434 0.03291
2007 3 12 54171 -0.0160 0.5446 0.03295
2007 3 13 54172 -0.0129 0.5458 0.03297
2007 3 14 54173 -0.0098 0.5469 0.03295
2007 3 15 54174 -0.0067 0.5479 0.03268
2007 3 16 54175 -0.0036 0.5490 0.03202
2007 3 17 54176 -0.0004 0.5500 0.03102
2007 3 18 54177 0.0028 0.5509 0.02972
2007 3 19 54178 0.0059 0.5518 0.02821
2007 3 20 54179 0.0091 0.5526 0.02666
2007 3 21 54180 0.0124 0.5535 0.02523
2007 3 22 54181 0.0156 0.5542 0.02406
2007 3 23 54182 0.0189 0.5549 0.02321
2007 3 24 54183 0.0221 0.5556 0.02266
2007 3 25 54184 0.0254 0.5562 0.02228
2007 3 26 54185 0.0287 0.5568 0.02194
2007 3 27 54186 0.0320 0.5573 0.02149
2007 3 28 54187 0.0353 0.5578 0.02087
2007 3 29 54188 0.0387 0.5583 0.02009
2007 3 30 54189 0.0420 0.5587 0.01918
2007 3 31 54190 0.0454 0.5590 0.01821
2007 4 1 54191 0.0487 0.5593 0.01711
2007 4 2 54192 0.0521 0.5595 0.01597
2007 4 3 54193 0.0555 0.5597 0.01491
2007 4 4 54194 0.0588 0.5599 0.01394
2007 4 5 54195 0.0622 0.5600 0.01312
2007 4 6 54196 0.0656 0.5601 0.01248
2007 4 7 54197 0.0690 0.5601 0.01200
2007 4 8 54198 0.0724 0.5600 0.01168
2007 4 9 54199 0.0758 0.5599 0.01145
2007 4 10 54200 0.0792 0.5598 0.01135
2007 4 11 54201 0.0826 0.5596 0.01115
2007 4 12 54202 0.0860 0.5593 0.01075
2007 4 13 54203 0.0893 0.5591 0.01003
2007 4 14 54204 0.0927 0.5587 0.00901
2007 4 15 54205 0.0961 0.5583 0.00763
2007 4 16 54206 0.0995 0.5579 0.00613
2007 4 17 54207 0.1029 0.5574 0.00469
2007 4 18 54208 0.1062 0.5569 0.00348
2007 4 19 54209 0.1096 0.5563 0.00262
2007 4 20 54210 0.1130 0.5556 0.00213
2007 4 21 54211 0.1163 0.5549 0.00198
2007 4 22 54212 0.1197 0.5542 0.00194
2007 4 23 54213 0.1230 0.5534 0.00193
2007 4 24 54214 0.1263 0.5526 0.00175
2007 4 25 54215 0.1296 0.5517 0.00134
2007 4 26 54216 0.1329 0.5508 0.00077
2007 4 27 54217 0.1362 0.5498 0.00004
2007 4 28 54218 0.1395 0.5487 -0.00076
2007 4 29 54219 0.1427 0.5476 -0.00156
2007 4 30 54220 0.1460 0.5465 -0.00228
2007 5 1 54221 0.1492 0.5453 -0.00285
2007 5 2 54222 0.1524 0.5441 -0.00318
2007 5 3 54223 0.1556 0.5428 -0.00329
2007 5 4 54224 0.1588 0.5415 -0.00320
2007 5 5 54225 0.1620 0.5401 -0.00296
2007 5 6 54226 0.1651 0.5386 -0.00257
2007 5 7 54227 0.1682 0.5372 -0.00219
2007 5 8 54228 0.1713 0.5356 -0.00191
2007 5 9 54229 0.1744 0.5341 -0.00185
2007 5 10 54230 0.1775 0.5324 -0.00206
2007 5 11 54231 0.1805 0.5308 -0.00257
2007 5 12 54232 0.1835 0.5290 -0.00334
2007 5 13 54233 0.1865 0.5273 -0.00419
2007 5 14 54234 0.1895 0.5255 -0.00501
2007 5 15 54235 0.1924 0.5236 -0.00570
2007 5 16 54236 0.1953 0.5217 -0.00614
2007 5 17 54237 0.1982 0.5197 -0.00627
2007 5 18 54238 0.2011 0.5177 -0.00610
2007 5 19 54239 0.2039 0.5157 -0.00571
2007 5 20 54240 0.2067 0.5136 -0.00531
2007 5 21 54241 0.2095 0.5115 -0.00498
2007 5 22 54242 0.2122 0.5093 -0.00481
2007 5 23 54243 0.2150 0.5071 -0.00486
2007 5 24 54244 0.2176 0.5048 -0.00506
2007 5 25 54245 0.2203 0.5025 -0.00540
2007 5 26 54246 0.2229 0.5001 -0.00581
2007 5 27 54247 0.2255 0.4977 -0.00625
2007 5 28 54248 0.2281 0.4953 -0.00662
2007 5 29 54249 0.2306 0.4928 -0.00685
2007 5 30 54250 0.2331 0.4903 -0.00692
2007 5 31 54251 0.2355 0.4877 -0.00678
2007 6 1 54252 0.2379 0.4851 -0.00647
2007 6 2 54253 0.2403 0.4824 -0.00599
2007 6 3 54254 0.2427 0.4798 -0.00543
2007 6 4 54255 0.2450 0.4770 -0.00493
2007 6 5 54256 0.2472 0.4743 -0.00457
2007 6 6 54257 0.2495 0.4715 -0.00439
2007 6 7 54258 0.2517 0.4686 -0.00444
2007 6 8 54259 0.2538 0.4657 -0.00479
2007 6 9 54260 0.2559 0.4628 -0.00533
2007 6 10 54261 0.2580 0.4599 -0.00591
2007 6 11 54262 0.2600 0.4569 -0.00635
2007 6 12 54263 0.2620 0.4539 -0.00647
2007 6 13 54264 0.2639 0.4508 -0.00621
2007 6 14 54265 0.2658 0.4477 -0.00560
2007 6 15 54266 0.2677 0.4446 -0.00479
2007 6 16 54267 0.2695 0.4415 -0.00383
2007 6 17 54268 0.2713 0.4383 -0.00281
2007 6 18 54269 0.2730 0.4350 -0.00187
2007 6 19 54270 0.2747 0.4318 -0.00111
2007 6 20 54271 0.2763 0.4285 -0.00052
2007 6 21 54272 0.2779 0.4252 -0.00013
2007 6 22 54273 0.2794 0.4219 0.00013
2007 6 23 54274 0.2809 0.4185 0.00037
2007 6 24 54275 0.2823 0.4151 0.00061
2007 6 25 54276 0.2837 0.4117 0.00099
2007 6 26 54277 0.2850 0.4083 0.00154
2007 6 27 54278 0.2863 0.4048 0.00224
2007 6 28 54279 0.2876 0.4013 0.00303
2007 6 29 54280 0.2888 0.3978 0.00396
2007 6 30 54281 0.2899 0.3942 0.00498
2007 7 1 54282 0.2910 0.3907 0.00596
2007 7 2 54283 0.2920 0.3871 0.00677
2007 7 3 54284 0.2930 0.3835 0.00725
2007 7 4 54285 0.2939 0.3799 0.00751
2007 7 5 54286 0.2948 0.3762 0.00751
2007 7 6 54287 0.2956 0.3726 0.00724
2007 7 7 54288 0.2964 0.3689 0.00689
2007 7 8 54289 0.2971 0.3652 0.00656
2007 7 9 54290 0.2977 0.3615 0.00639
2007 7 10 54291 0.2983 0.3578 0.00647
2007 7 11 54292 0.2989 0.3541 0.00689
2007 7 12 54293 0.2994 0.3503 0.00756
2007 7 13 54294 0.2998 0.3465 0.00840
2007 7 14 54295 0.3002 0.3428 0.00927
2007 7 15 54296 0.3005 0.3390 0.01003
2007 7 16 54297 0.3007 0.3352 0.01055
2007 7 17 54298 0.3009 0.3314 0.01083
2007 7 18 54299 0.3011 0.3276 0.01091
2007 7 19 54300 0.3012 0.3238 0.01092
2007 7 20 54301 0.3012 0.3200 0.01094
These predictions are based on all announced leap seconds.
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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