**********************************************************************
* *
* I E R S B U L L E T I N - A *
* *
* Rapid Service/Prediction of Earth Orientation *
**********************************************************************
28 December 2006 Vol. XIX No. 052
______________________________________________________________________
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
= +0.1 seconds beginning 28 September 2006 at 0000 UTC
Beginning 1 January 2006:
TAI-UTC(BIPM) = 33.000 000 seconds
**********************************************************************
* No leap second will be introduced into UTC on December 31, 2006. *
* Last positive leap second introduced in UTC on December 31, 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 12 22 54091 -.05247 .00003 .33331 .00002 .050266 .000009
6 12 23 54092 -.05251 .00003 .33385 .00002 .049560 .000010
6 12 24 54093 -.05199 .00003 .33490 .00002 .048599 .000010
6 12 25 54094 -.05125 .00002 .33652 .00002 .047378 .000010
6 12 26 54095 -.05067 .00002 .33831 .00002 .045933 .000011
6 12 27 54096 -.05032 .00002 .34008 .00002 .044325 .000010
6 12 28 54097 -.05003 .00002 .34196 .00001 .042694 .000008
_______________________________________________________________________
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 = .0695 - .0280 cos A - .0976 sin A - .0927 cos C + .0889 sin C
y = .3381 - .0835 cos A + .0248 sin A + .0889 cos C + .0927 sin C
UT1-UTC = .0259 - .00088 (MJD - 54102) - (UT2-UT1)
where A = 2*pi*(MJD-54097)/365.25 and C = 2*pi*(MJD-54097)/435.
TAI-UTC(MJD 54098) = 33.0
The accuracy may be estimated from the expressions:
S x,y = 0.00068 (MJD-54097)**0.80 S t = 0.00025 (MJD-54097)**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 12 29 54098 -0.0499 0.3439 0.04120
2006 12 30 54099 -0.0498 0.3457 0.03992
2006 12 31 54100 -0.0498 0.3476 0.03895
2007 1 1 54101 -0.0499 0.3494 0.03827
2007 1 2 54102 -0.0499 0.3511 0.03779
2007 1 3 54103 -0.0501 0.3529 0.03739
2007 1 4 54104 -0.0502 0.3546 0.03692
2007 1 5 54105 -0.0504 0.3563 0.03632
2007 1 6 54106 -0.0506 0.3580 0.03554
2007 1 7 54107 -0.0508 0.3597 0.03458
2007 1 8 54108 -0.0510 0.3614 0.03348
2007 1 9 54109 -0.0512 0.3631 0.03227
2007 1 10 54110 -0.0513 0.3649 0.03103
2007 1 11 54111 -0.0515 0.3666 0.02983
2007 1 12 54112 -0.0517 0.3683 0.02872
2007 1 13 54113 -0.0518 0.3700 0.02774
2007 1 14 54114 -0.0520 0.3718 0.02691
2007 1 15 54115 -0.0521 0.3735 0.02623
2007 1 16 54116 -0.0521 0.3752 0.02568
2007 1 17 54117 -0.0522 0.3770 0.02520
2007 1 18 54118 -0.0522 0.3787 0.02470
2007 1 19 54119 -0.0522 0.3805 0.02406
2007 1 20 54120 -0.0522 0.3822 0.02317
2007 1 21 54121 -0.0522 0.3840 0.02200
2007 1 22 54122 -0.0521 0.3857 0.02055
2007 1 23 54123 -0.0520 0.3875 0.01891
2007 1 24 54124 -0.0518 0.3893 0.01725
2007 1 25 54125 -0.0516 0.3910 0.01572
2007 1 26 54126 -0.0514 0.3928 0.01443
2007 1 27 54127 -0.0512 0.3945 0.01345
2007 1 28 54128 -0.0509 0.3963 0.01275
2007 1 29 54129 -0.0506 0.3980 0.01225
2007 1 30 54130 -0.0502 0.3998 0.01185
2007 1 31 54131 -0.0498 0.4015 0.01142
2007 2 1 54132 -0.0494 0.4033 0.01088
2007 2 2 54133 -0.0489 0.4050 0.01015
2007 2 3 54134 -0.0484 0.4068 0.00924
2007 2 4 54135 -0.0479 0.4085 0.00816
2007 2 5 54136 -0.0473 0.4102 0.00695
2007 2 6 54137 -0.0467 0.4119 0.00567
2007 2 7 54138 -0.0460 0.4137 0.00440
2007 2 8 54139 -0.0453 0.4154 0.00320
2007 2 9 54140 -0.0446 0.4170 0.00213
2007 2 10 54141 -0.0439 0.4187 0.00121
2007 2 11 54142 -0.0431 0.4204 0.00045
2007 2 12 54143 -0.0422 0.4221 -0.00018
2007 2 13 54144 -0.0414 0.4237 -0.00074
2007 2 14 54145 -0.0405 0.4254 -0.00131
2007 2 15 54146 -0.0395 0.4270 -0.00201
2007 2 16 54147 -0.0385 0.4287 -0.00295
2007 2 17 54148 -0.0375 0.4303 -0.00422
2007 2 18 54149 -0.0365 0.4319 -0.00583
2007 2 19 54150 -0.0354 0.4335 -0.00771
2007 2 20 54151 -0.0343 0.4350 -0.00972
2007 2 21 54152 -0.0331 0.4366 -0.01167
2007 2 22 54153 -0.0320 0.4382 -0.01339
2007 2 23 54154 -0.0307 0.4397 -0.01481
2007 2 24 54155 -0.0295 0.4412 -0.01591
2007 2 25 54156 -0.0282 0.4427 -0.01678
2007 2 26 54157 -0.0269 0.4442 -0.01753
2007 2 27 54158 -0.0255 0.4456 -0.01827
2007 2 28 54159 -0.0242 0.4471 -0.01911
2007 3 1 54160 -0.0228 0.4485 -0.02012
2007 3 2 54161 -0.0213 0.4499 -0.02132
2007 3 3 54162 -0.0198 0.4513 -0.02269
2007 3 4 54163 -0.0183 0.4527 -0.02421
2007 3 5 54164 -0.0168 0.4540 -0.02581
2007 3 6 54165 -0.0152 0.4554 -0.02742
2007 3 7 54166 -0.0136 0.4567 -0.02897
2007 3 8 54167 -0.0120 0.4579 -0.03040
2007 3 9 54168 -0.0104 0.4592 -0.03168
2007 3 10 54169 -0.0087 0.4604 -0.03279
2007 3 11 54170 -0.0070 0.4616 -0.03376
2007 3 12 54171 -0.0052 0.4628 -0.03462
2007 3 13 54172 -0.0035 0.4640 -0.03544
2007 3 14 54173 -0.0017 0.4651 -0.03632
2007 3 15 54174 0.0001 0.4662 -0.03738
2007 3 16 54175 0.0020 0.4673 -0.03873
2007 3 17 54176 0.0038 0.4684 -0.04042
2007 3 18 54177 0.0057 0.4694 -0.04244
2007 3 19 54178 0.0075 0.4704 -0.04468
2007 3 20 54179 0.0095 0.4714 -0.04696
2007 3 21 54180 0.0114 0.4723 -0.04908
2007 3 22 54181 0.0134 0.4733 -0.05090
2007 3 23 54182 0.0154 0.4741 -0.05238
2007 3 24 54183 0.0175 0.4750 -0.05357
2007 3 25 54184 0.0195 0.4758 -0.05457
2007 3 26 54185 0.0216 0.4766 -0.05553
2007 3 27 54186 0.0237 0.4774 -0.05656
2007 3 28 54187 0.0258 0.4781 -0.05774
2007 3 29 54188 0.0279 0.4788 -0.05909
2007 3 30 54189 0.0300 0.4795 -0.06063
2007 3 31 54190 0.0322 0.4801 -0.06230
2007 4 1 54191 0.0344 0.4807 -0.06407
2007 4 2 54192 0.0366 0.4813 -0.06587
2007 4 3 54193 0.0388 0.4818 -0.06763
2007 4 4 54194 0.0410 0.4823 -0.06929
2007 4 5 54195 0.0432 0.4828 -0.07080
2007 4 6 54196 0.0455 0.4832 -0.07213
2007 4 7 54197 0.0477 0.4836 -0.07331
2007 4 8 54198 0.0500 0.4840 -0.07435
2007 4 9 54199 0.0523 0.4843 -0.07532
2007 4 10 54200 0.0546 0.4846 -0.07629
2007 4 11 54201 0.0569 0.4849 -0.07738
2007 4 12 54202 0.0592 0.4851 -0.07867
2007 4 13 54203 0.0615 0.4853 -0.08020
2007 4 14 54204 0.0638 0.4854 -0.08206
2007 4 15 54205 0.0662 0.4855 -0.08418
2007 4 16 54206 0.0685 0.4856 -0.08642
2007 4 17 54207 0.0708 0.4856 -0.08859
2007 4 18 54208 0.0732 0.4856 -0.09053
2007 4 19 54209 0.0755 0.4856 -0.09212
2007 4 20 54210 0.0779 0.4855 -0.09337
2007 4 21 54211 0.0803 0.4854 -0.09436
2007 4 22 54212 0.0826 0.4852 -0.09523
2007 4 23 54213 0.0850 0.4850 -0.09612
2007 4 24 54214 0.0874 0.4848 -0.09712
2007 4 25 54215 0.0897 0.4845 -0.09827
2007 4 26 54216 0.0921 0.4842 -0.09959
2007 4 27 54217 0.0945 0.4838 -0.10103
2007 4 28 54218 0.0968 0.4834 -0.10255
2007 4 29 54219 0.0992 0.4830 -0.10409
2007 4 30 54220 0.1015 0.4825 -0.10558
2007 5 1 54221 0.1039 0.4820 -0.10697
2007 5 2 54222 0.1062 0.4815 -0.10819
2007 5 3 54223 0.1086 0.4809 -0.10923
2007 5 4 54224 0.1109 0.4803 -0.11008
2007 5 5 54225 0.1132 0.4796 -0.11078
2007 5 6 54226 0.1156 0.4789 -0.11137
2007 5 7 54227 0.1179 0.4782 -0.11195
2007 5 8 54228 0.1202 0.4774 -0.11259
2007 5 9 54229 0.1225 0.4766 -0.11339
2007 5 10 54230 0.1248 0.4757 -0.11443
2007 5 11 54231 0.1270 0.4749 -0.11575
2007 5 12 54232 0.1293 0.4739 -0.11732
2007 5 13 54233 0.1316 0.4730 -0.11906
2007 5 14 54234 0.1338 0.4720 -0.12082
2007 5 15 54235 0.1360 0.4709 -0.12243
2007 5 16 54236 0.1382 0.4698 -0.12374
2007 5 17 54237 0.1404 0.4687 -0.12471
2007 5 18 54238 0.1426 0.4676 -0.12538
2007 5 19 54239 0.1448 0.4664 -0.12587
2007 5 20 54240 0.1469 0.4652 -0.12632
2007 5 21 54241 0.1491 0.4639 -0.12685
2007 5 22 54242 0.1512 0.4626 -0.12753
2007 5 23 54243 0.1533 0.4613 -0.12837
2007 5 24 54244 0.1553 0.4599 -0.12934
2007 5 25 54245 0.1574 0.4585 -0.13039
2007 5 26 54246 0.1594 0.4571 -0.13147
2007 5 27 54247 0.1614 0.4556 -0.13250
2007 5 28 54248 0.1634 0.4541 -0.13343
2007 5 29 54249 0.1654 0.4526 -0.13420
2007 5 30 54250 0.1673 0.4510 -0.13479
2007 5 31 54251 0.1693 0.4494 -0.13518
2007 6 1 54252 0.1712 0.4478 -0.13541
2007 6 2 54253 0.1731 0.4462 -0.13552
2007 6 3 54254 0.1749 0.4445 -0.13558
2007 6 4 54255 0.1767 0.4427 -0.13570
2007 6 5 54256 0.1785 0.4410 -0.13594
2007 6 6 54257 0.1803 0.4392 -0.13640
2007 6 7 54258 0.1821 0.4374 -0.13710
2007 6 8 54259 0.1838 0.4356 -0.13804
2007 6 9 54260 0.1855 0.4337 -0.13914
2007 6 10 54261 0.1871 0.4318 -0.14029
2007 6 11 54262 0.1888 0.4299 -0.14134
2007 6 12 54263 0.1904 0.4279 -0.14216
2007 6 13 54264 0.1920 0.4260 -0.14267
2007 6 14 54265 0.1935 0.4240 -0.14288
2007 6 15 54266 0.1950 0.4220 -0.14286
2007 6 16 54267 0.1965 0.4199 -0.14276
2007 6 17 54268 0.1980 0.4178 -0.14271
2007 6 18 54269 0.1994 0.4157 -0.14280
2007 6 19 54270 0.2008 0.4136 -0.14306
2007 6 20 54271 0.2021 0.4115 -0.14349
2007 6 21 54272 0.2035 0.4093 -0.14403
2007 6 22 54273 0.2048 0.4072 -0.14461
2007 6 23 54274 0.2060 0.4050 -0.14516
2007 6 24 54275 0.2072 0.4027 -0.14563
2007 6 25 54276 0.2084 0.4005 -0.14597
2007 6 26 54277 0.2096 0.3982 -0.14615
2007 6 27 54278 0.2107 0.3960 -0.14616
2007 6 28 54279 0.2118 0.3937 -0.14601
2007 6 29 54280 0.2129 0.3914 -0.14577
2007 6 30 54281 0.2139 0.3890 -0.14549
2007 7 1 54282 0.2148 0.3867 -0.14528
2007 7 2 54283 0.2158 0.3843 -0.14523
2007 7 3 54284 0.2167 0.3820 -0.14543
2007 7 4 54285 0.2176 0.3796 -0.14590
2007 7 5 54286 0.2184 0.3772 -0.14665
2007 7 6 54287 0.2192 0.3748 -0.14760
2007 7 7 54288 0.2200 0.3724 -0.14863
2007 7 8 54289 0.2208 0.3699 -0.14962
2007 7 9 54290 0.2215 0.3674 -0.15045
2007 7 10 54291 0.2222 0.3650 -0.15102
2007 7 11 54292 0.2229 0.3625 -0.15132
2007 7 12 54293 0.2235 0.3600 -0.15139
2007 7 13 54294 0.2241 0.3575 -0.15135
2007 7 14 54295 0.2247 0.3550 -0.15130
2007 7 15 54296 0.2252 0.3525 -0.15133
2007 7 16 54297 0.2256 0.3500 -0.15149
2007 7 17 54298 0.2261 0.3475 -0.15177
2007 7 18 54299 0.2265 0.3449 -0.15211
2007 7 19 54300 0.2268 0.3424 -0.15244
2007 7 20 54301 0.2271 0.3399 -0.15269
2007 7 21 54302 0.2274 0.3373 -0.15279
2007 7 22 54303 0.2276 0.3348 -0.15271
2007 7 23 54304 0.2278 0.3323 -0.15241
2007 7 24 54305 0.2280 0.3297 -0.15189
2007 7 25 54306 0.2281 0.3272 -0.15118
2007 7 26 54307 0.2282 0.3247 -0.15033
2007 7 27 54308 0.2282 0.3222 -0.14944
2007 7 28 54309 0.2282 0.3196 -0.14858
2007 7 29 54310 0.2282 0.3171 -0.14790
2007 7 30 54311 0.2281 0.3146 -0.14748
2007 7 31 54312 0.2280 0.3121 -0.14739
2007 8 1 54313 0.2278 0.3096 -0.14761
2007 8 2 54314 0.2276 0.3071 -0.14810
2007 8 3 54315 0.2274 0.3046 -0.14873
2007 8 4 54316 0.2271 0.3021 -0.14933
2007 8 5 54317 0.2268 0.2996 -0.14976
2007 8 6 54318 0.2264 0.2971 -0.14990
2007 8 7 54319 0.2260 0.2947 -0.14981
2007 8 8 54320 0.2256 0.2922 -0.14947
2007 8 9 54321 0.2251 0.2898 -0.14902
2007 8 10 54322 0.2245 0.2873 -0.14865
2007 8 11 54323 0.2240 0.2849 -0.14844
2007 8 12 54324 0.2234 0.2825 -0.14850
2007 8 13 54325 0.2227 0.2801 -0.14871
2007 8 14 54326 0.2221 0.2777 -0.14904
2007 8 15 54327 0.2214 0.2753 -0.14949
2007 8 16 54328 0.2206 0.2730 -0.14997
2007 8 17 54329 0.2198 0.2706 -0.15046
2007 8 18 54330 0.2190 0.2683 -0.15091
2007 8 19 54331 0.2181 0.2660 -0.15128
2007 8 20 54332 0.2172 0.2637 -0.15150
2007 8 21 54333 0.2162 0.2614 -0.15166
2007 8 22 54334 0.2152 0.2592 -0.15176
2007 8 23 54335 0.2142 0.2569 -0.15175
2007 8 24 54336 0.2132 0.2547 -0.15176
2007 8 25 54337 0.2121 0.2525 -0.15181
2007 8 26 54338 0.2109 0.2503 -0.15203
2007 8 27 54339 0.2097 0.2481 -0.15244
2007 8 28 54340 0.2085 0.2460 -0.15311
2007 8 29 54341 0.2073 0.2439 -0.15406
2007 8 30 54342 0.2060 0.2418 -0.15516
2007 8 31 54343 0.2047 0.2397 -0.15632
2007 9 1 54344 0.2033 0.2376 -0.15732
2007 9 2 54345 0.2019 0.2356 -0.15812
2007 9 3 54346 0.2005 0.2336 -0.15859
2007 9 4 54347 0.1990 0.2316 -0.15884
2007 9 5 54348 0.1975 0.2296 -0.15883
2007 9 6 54349 0.1960 0.2277 -0.15874
2007 9 7 54350 0.1944 0.2257 -0.15876
2007 9 8 54351 0.1928 0.2239 -0.15898
2007 9 9 54352 0.1912 0.2220 -0.15937
2007 9 10 54353 0.1895 0.2201 -0.15986
2007 9 11 54354 0.1878 0.2183 -0.16041
2007 9 12 54355 0.1860 0.2165 -0.16103
2007 9 13 54356 0.1843 0.2148 -0.16164
2007 9 14 54357 0.1825 0.2130 -0.16213
2007 9 15 54358 0.1806 0.2113 -0.16246
2007 9 16 54359 0.1787 0.2097 -0.16265
2007 9 17 54360 0.1768 0.2080 -0.16268
2007 9 18 54361 0.1749 0.2064 -0.16256
2007 9 19 54362 0.1729 0.2048 -0.16230
2007 9 20 54363 0.1709 0.2032 -0.16196
2007 9 21 54364 0.1689 0.2017 -0.16166
2007 9 22 54365 0.1669 0.2002 -0.16152
2007 9 23 54366 0.1648 0.1987 -0.16164
2007 9 24 54367 0.1627 0.1973 -0.16206
2007 9 25 54368 0.1605 0.1959 -0.16282
2007 9 26 54369 0.1583 0.1945 -0.16388
2007 9 27 54370 0.1561 0.1932 -0.16512
2007 9 28 54371 0.1539 0.1918 -0.16627
2007 9 29 54372 0.1517 0.1906 -0.16714
2007 9 30 54373 0.1494 0.1893 -0.16775
2007 10 1 54374 0.1471 0.1881 -0.16807
2007 10 2 54375 0.1447 0.1869 -0.16820
2007 10 3 54376 0.1424 0.1858 -0.16827
2007 10 4 54377 0.1400 0.1846 -0.16845
2007 10 5 54378 0.1376 0.1836 -0.16881
2007 10 6 54379 0.1351 0.1825 -0.16942
2007 10 7 54380 0.1327 0.1815 -0.17025
2007 10 8 54381 0.1302 0.1805 -0.17124
2007 10 9 54382 0.1277 0.1796 -0.17225
2007 10 10 54383 0.1252 0.1787 -0.17323
2007 10 11 54384 0.1226 0.1778 -0.17416
2007 10 12 54385 0.1201 0.1770 -0.17496
2007 10 13 54386 0.1175 0.1762 -0.17553
2007 10 14 54387 0.1149 0.1754 -0.17591
2007 10 15 54388 0.1122 0.1747 -0.17611
2007 10 16 54389 0.1096 0.1740 -0.17613
2007 10 17 54390 0.1069 0.1733 -0.17607
2007 10 18 54391 0.1042 0.1727 -0.17600
2007 10 19 54392 0.1015 0.1721 -0.17601
2007 10 20 54393 0.0988 0.1715 -0.17609
2007 10 21 54394 0.0961 0.1710 -0.17647
2007 10 22 54395 0.0933 0.1706 -0.17716
2007 10 23 54396 0.0906 0.1701 -0.17813
2007 10 24 54397 0.0878 0.1697 -0.17927
2007 10 25 54398 0.0850 0.1694 -0.18044
2007 10 26 54399 0.0822 0.1691 -0.18144
2007 10 27 54400 0.0794 0.1688 -0.18223
2007 10 28 54401 0.0765 0.1685 -0.18280
2007 10 29 54402 0.0737 0.1683 -0.18319
2007 10 30 54403 0.0708 0.1681 -0.18350
2007 10 31 54404 0.0679 0.1680 -0.18390
2007 11 1 54405 0.0651 0.1679 -0.18449
2007 11 2 54406 0.0622 0.1679 -0.18531
2007 11 3 54407 0.0593 0.1679 -0.18630
2007 11 4 54408 0.0564 0.1679 -0.18742
2007 11 5 54409 0.0535 0.1679 -0.18866
2007 11 6 54410 0.0506 0.1681 -0.18984
2007 11 7 54411 0.0476 0.1682 -0.19093
2007 11 8 54412 0.0447 0.1684 -0.19187
2007 11 9 54413 0.0418 0.1686 -0.19258
2007 11 10 54414 0.0388 0.1689 -0.19311
2007 11 11 54415 0.0359 0.1692 -0.19345
2007 11 12 54416 0.0330 0.1695 -0.19366
2007 11 13 54417 0.0300 0.1699 -0.19381
2007 11 14 54418 0.0271 0.1703 -0.19401
2007 11 15 54419 0.0241 0.1708 -0.19431
2007 11 16 54420 0.0212 0.1713 -0.19471
2007 11 17 54421 0.0182 0.1718 -0.19529
2007 11 18 54422 0.0153 0.1724 -0.19609
2007 11 19 54423 0.0124 0.1730 -0.19710
2007 11 20 54424 0.0094 0.1736 -0.19837
2007 11 21 54425 0.0065 0.1743 -0.19980
2007 11 22 54426 0.0036 0.1751 -0.20125
2007 11 23 54427 0.0007 0.1759 -0.20249
2007 11 24 54428 -0.0023 0.1767 -0.20344
2007 11 25 54429 -0.0052 0.1775 -0.20411
2007 11 26 54430 -0.0081 0.1784 -0.20456
2007 11 27 54431 -0.0110 0.1794 -0.20493
2007 11 28 54432 -0.0138 0.1803 -0.20539
2007 11 29 54433 -0.0167 0.1813 -0.20603
2007 11 30 54434 -0.0196 0.1824 -0.20686
2007 12 1 54435 -0.0224 0.1835 -0.20786
2007 12 2 54436 -0.0253 0.1846 -0.20888
2007 12 3 54437 -0.0281 0.1858 -0.20989
2007 12 4 54438 -0.0309 0.1870 -0.21084
2007 12 5 54439 -0.0337 0.1882 -0.21166
2007 12 6 54440 -0.0365 0.1895 -0.21235
2007 12 7 54441 -0.0392 0.1908 -0.21291
2007 12 8 54442 -0.0420 0.1922 -0.21334
2007 12 9 54443 -0.0447 0.1936 -0.21361
2007 12 10 54444 -0.0474 0.1950 -0.21368
2007 12 11 54445 -0.0501 0.1965 -0.21364
2007 12 12 54446 -0.0528 0.1980 -0.21355
2007 12 13 54447 -0.0554 0.1996 -0.21353
2007 12 14 54448 -0.0580 0.2012 -0.21364
2007 12 15 54449 -0.0606 0.2028 -0.21391
2007 12 16 54450 -0.0632 0.2045 -0.21436
2007 12 17 54451 -0.0658 0.2062 -0.21504
2007 12 18 54452 -0.0683 0.2079 -0.21573
2007 12 19 54453 -0.0708 0.2097 -0.21640
2007 12 20 54454 -0.0733 0.2115 -0.21697
2007 12 21 54455 -0.0758 0.2133 -0.21735
2007 12 22 54456 -0.0782 0.2152 -0.21741
2007 12 23 54457 -0.0806 0.2171 -0.21723
2007 12 24 54458 -0.0830 0.2190 -0.21698
2007 12 25 54459 -0.0853 0.2210 -0.21676
2007 12 26 54460 -0.0876 0.2230 -0.21673
2007 12 27 54461 -0.0899 0.2251 -0.21689
2007 12 28 54462 -0.0921 0.2272 -0.21724
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)
54075 -59.20 .15 -2.81 .34
54076 -58.97 .15 -2.79 .34
54077 -58.62 .15 -2.72 .34
54078 -58.26 .74 -2.56 .34
54079 -58.03 .74 -2.33 .34
54080 -58.02 .74 -2.14 .34
54081 -58.12 .74 -2.07 .34
54082 -58.25 .41 -2.06 .12
54083 -58.39 .41 -2.00 .12
54084 -58.55 .41 -1.90 .12
IAU2000A Celestial Pole Offset Series
MJD dX error dY error
(msec. of arc)
54075 0.118 0.060 -0.041 0.340
54076 0.137 0.060 -0.030 0.340
54077 0.162 0.060 -0.031 0.340
54078 0.178 0.294 -0.026 0.340
54079 0.192 0.294 -0.007 0.340
54080 0.186 0.294 0.009 0.340
54081 0.173 0.294 0.004 0.340
54082 0.158 0.163 -0.007 0.120
54083 0.145 0.163 0.005 0.120
54084 0.132 0.163 0.026 0.120
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