BULLETIN B 235
(IAU 2000)
04 September 2007
==============================================================================
Following IAU Conventions 2000, IERS provides new products dX, dY, celestial
pole offsets with respect to the new IAU2000A Precession-Nutation theory .
The present Bulletin B version includes the celestial pole offsets dX, dY:
dX = X_obs - X_IAU2000A and dY = Y_obs - Y_IAU2000A
where
X_obs, Y_obs are the observed coordinates of the Celestial Intermediate
Pole (CIP) in the Geocentric Celestial Reference System, and
X_IAU2000A, Y_IAU2000A are the celestial pole coordinates provided by using
the IAU2000A Precession-Nutation theory.
The current Bulletin B including (dpsi,deps)_1980 will be maintained
as long as necessary.
For more details refer to IERS Messages 38, on IAU 2000 Resolution Compliancy
Information.
==============================================================================
Contents are described in the Explanatory Supplement available at
http://hpiers.obspm.fr/eop-pc/
1 - EARTH ORIENTATION PARAMETERS (IERS evaluation).
The values in this section are samplings of section 2 given at five-day
intervals.
Date MJD x y UT1R-UTC UT1R-TAI dX dY
2007 " " s s 0.001" 0.001"
(0h UTC)
Final Bulletin B values.
JUL 3 54284 0.20979 0.40727 -0.159421 -33.159421 0.00 -0.52
JUL 8 54289 0.21518 0.39632 -0.161161 -33.161161 0.03 -0.50
JUL 13 54294 0.21948 0.38319 -0.162180 -33.162180 0.14 -0.37
JUL 18 54299 0.22590 0.37050 -0.162648 -33.162648 -0.05 -0.55
JUL 23 54304 0.22972 0.35709 -0.162767 -33.162767 0.15 -0.42
JUL 28 54309 0.22922 0.34585 -0.162457 -33.162457 0.31 -0.17
AUG 2 54314 0.22663 0.33155 -0.162447 -33.162447 -0.30 -0.71
Preliminary extension, to be updated weekly in Bulletin A and monthly
in Bulletin B.
AUG 7 54319 0.22284 0.31856 -0.163107 -33.163107 -0.03 -0.32
AUG 12 54324 0.21691 0.30573 -0.163266 -33.163266 0.11 -0.17
AUG 17 54329 0.21272 0.29551 -0.162970 -33.162970 -0.03 -0.43
AUG 22 54334 0.20961 0.28203 -0.163504 -33.163504 -0.06 -0.48
AUG 27 54339 0.20183 0.27041 -0.163695 -33.163695 0.00 0.00
SEP 1 54344 0.19788 0.26189 -0.164472 -33.164472 0.00 0.00
SEP 6 54349 0.19134 0.25200 -0.164897 -33.164897 0.00 0.00
SEP 11 54354 0.18418 0.24017 -0.168133 -33.168133 0.00 0.00
SEP 16 54359 0.17504 0.22872 -0.172615 -33.172615 0.00 0.00
SEP 21 54364 0.16574 0.21908 -0.177377 -33.177377 0.00 0.00
SEP 26 54369 0.15360 0.20912 -0.182337 -33.182337 0.00 0.00
OCT 1 54374 0.14236 0.20080 -0.187591 -33.187591 0.00 0.00
OCT 6 54379 0.13041 0.19291 -0.193096 -33.193096 0.00 0.00
OCT 11 54384 0.11772 0.18595 -0.198888 -33.198888 0.00 0.00
OCT 16 54389 0.10450 0.17909 -0.204932 -33.204932 0.00 0.00
OCT 21 54394 0.09007 0.17393 -0.211170 -33.211170 0.00 0.00
OCT 26 54399 0.07713 0.17010 -0.217609 -33.217609 0.00 0.00
OCT 31 54404 0.06316 0.16645 -0.224171 -33.224171 0.00 0.00
Note. In UT1R, the effects of zonal tides with periods shorter than 35 days
are removed ; UT1-UT1R (smaller than 0.0025s in absolute value) should be
added after quadratic interpolation of UT1R. Section 2 of this Bulletin gives
the daily interpolation of x, y, UT1, duration of day, dX, and dY.
IERS, B 235 (2)
2 - SMOOTHED VALUES OF x, y, UT1, D, dX, dY (IERS EVALUATION)
at one-day intervals. For smoothing characteristics, see Table2 in the
explanatory supplement. The reference system is described in the 2006
IERS Annual Report.
2007 MJD x y UT1-UTC UT1-UT1R D dX dY
(0 h UTC) " " s ms ms 0.001" 0.001"
JUL 3 54284 0.20979 0.40727 -0.157735 1.685 0.438 -0.01 -0.51
JUL 4 54285 0.21072 0.40516 -0.158309 1.546 0.676 0.00 -0.56
JUL 5 54286 0.21181 0.40309 -0.159096 1.151 0.836 0.01 -0.57
JUL 6 54287 0.21312 0.40091 -0.159981 0.570 0.940 0.02 -0.55
JUL 7 54288 0.21436 0.39868 -0.160925 -0.083 0.949 0.03 -0.52
JUL 8 54289 0.21518 0.39632 -0.161836 -0.674 0.767 0.03 -0.50
JUL 9 54290 0.21584 0.39378 -0.162442 -1.081 0.494 0.01 -0.48
JUL 10 54291 0.21669 0.39108 -0.162778 -1.226 0.215 0.00 -0.44
JUL 11 54292 0.21766 0.38835 -0.162862 -1.097 -0.033 0.00 -0.40
JUL 12 54293 0.21851 0.38577 -0.162719 -0.751 -0.200 0.06 -0.37
JUL 13 54294 0.21948 0.38319 -0.162480 -0.300 -0.292 0.14 -0.37
JUL 14 54295 0.22078 0.38051 -0.162168 0.126 -0.255 0.19 -0.42
JUL 15 54296 0.22204 0.37790 -0.162012 0.417 -0.102 0.15 -0.48
JUL 16 54297 0.22323 0.37542 -0.161993 0.513 0.081 0.06 -0.54
JUL 17 54298 0.22455 0.37298 -0.162160 0.412 0.240 -0.02 -0.57
JUL 18 54299 0.22590 0.37050 -0.162490 0.158 0.354 -0.05 -0.55
JUL 19 54300 0.22707 0.36804 -0.162888 -0.178 0.404 -0.01 -0.47
JUL 20 54301 0.22787 0.36545 -0.163262 -0.520 0.341 0.08 -0.37
JUL 21 54302 0.22852 0.36266 -0.163561 -0.797 0.234 0.17 -0.29
JUL 22 54303 0.22913 0.35972 -0.163728 -0.953 0.089 0.20 -0.31
JUL 23 54304 0.22972 0.35709 -0.163717 -0.950 -0.091 0.15 -0.42
JUL 24 54305 0.23013 0.35505 -0.163510 -0.772 -0.273 0.04 -0.57
JUL 25 54306 0.23021 0.35296 -0.163158 -0.429 -0.473 -0.03 -0.66
JUL 26 54307 0.23025 0.35069 -0.162576 0.043 -0.593 -0.01 -0.60
JUL 27 54308 0.23004 0.34845 -0.161945 0.582 -0.614 0.14 -0.41
JUL 28 54309 0.22922 0.34585 -0.161355 1.102 -0.534 0.31 -0.17
JUL 29 54310 0.22853 0.34295 -0.160938 1.504 -0.321 0.38 -0.06
JUL 30 54311 0.22813 0.34006 -0.160759 1.694 -0.062 0.27 -0.16
JUL 31 54312 0.22759 0.33714 -0.160833 1.607 0.220 0.02 -0.42
AUG 1 54313 0.22705 0.33422 -0.161188 1.236 0.483 -0.21 -0.66
AUG 2 54314 0.22663 0.33155 -0.161804 0.644 0.710 -0.30 -0.71
AUG 3 54315 0.22631 0.32914 -0.162601 -0.049 0.810 -0.22 -0.53
AUG 4 54316 0.22597 0.32655 -0.163369 -0.693 0.699 -0.07 -0.25
AUG 5 54317 0.22531 0.32368 -0.163950 -1.153 0.488 0.03 -0.07
AUG 6 54318 0.22414 0.32099 -0.164326 -1.345 0.202 0.02 -0.11
AUG 7 54319 0.22284 0.31856 -0.164358 -1.252 -0.088 -0.03 -0.32
AUG 8 54320 0.22141 0.31607 -0.164150 -0.926 -0.311 -0.04 -0.54
AUG 9 54321 0.21966 0.31347 -0.163749 -0.469 -0.430 0.00 -0.62
AUG 10 54322 0.21810 0.31091 -0.163290 -0.004 -0.439 0.07 -0.51
AUG 11 54323 0.21725 0.30828 -0.162919 0.355 -0.299 0.12 -0.31
AUG 12 54324 0.21691 0.30573 -0.162732 0.535 -0.067 0.11 -0.17
AUG 13 54325 0.21668 0.30335 -0.162765 0.509 0.083 0.08 -0.18
AUG 14 54326 0.21627 0.30111 -0.162900 0.306 0.187 0.02 -0.32
AUG 15 54327 0.21544 0.29913 -0.163131 -0.012 0.257 -0.02 -0.49
AUG 16 54328 0.21416 0.29744 -0.163415 -0.366 0.260 -0.04 -0.55
AUG 17 54329 0.21272 0.29551 -0.163647 -0.677 0.233 -0.03 -0.43
AUG 18 54330 0.21158 0.29288 -0.163869 -0.880 0.193 0.00 -0.23
AUG 19 54331 0.21084 0.28997 -0.163987 -0.928 0.086 0.00 -0.13
AUG 20 54332 0.21040 0.28693 -0.164001 -0.800 -0.062 -0.01 -0.16
AUG 21 54333 0.21022 0.28425 -0.163868 -0.500 -0.222 -0.03 -0.29
AUG 22 54334 0.20961 0.28203 -0.163561 -0.057 -0.369 -0.06 -0.48
AUG 23 54335 0.20834 0.27968 -0.163129 0.475 -0.448 -0.07 -0.60
AUG 24 54336 0.20664 0.27737 -0.162628 1.019 -0.482 -0.06 -0.51
AUG 25 54337 0.20473 0.27502 -0.162189 1.483 -0.362 0.00 0.00
AUG 26 54338 0.20298 0.27258 -0.161905 1.765 -0.134 0.00 0.00
AUG 27 54339 0.20183 0.27041 -0.161914 1.781 0.158 0.00 0.00
AUG 28 54340 0.20096 0.26863 -0.162238 1.490 0.467 0.00 0.00
AUG 29 54341 0.20010 0.26704 -0.162861 0.924 0.749 0.00 0.00
AUG 30 54342 0.19938 0.26550 -0.163718 0.188 0.948 0.00 0.00
IERS, B 235 (3)
3 - NORMAL VALUES OF THE EARTH ORIENTATION PARAMETERS AT FIVE-DAY INTERVALS
(IERS evaluation).
Raw normal values Uncertainties
2007 MJD x y UT1-UTC dX dY x y UT1 dX dY
(0 h UTC) " " s 0.001" 0.001" 0.0001s 0.001"
JUL 3 54284 0.20977 0.40725 -0.157730 0.001 -.480 0.02 0.02 0.02 0.04 0.04
JUL 8 54289 0.21515 0.39631 -0.161829 0.042 -.443 0.01 0.01 0.01 0.04 0.03
JUL 13 54294 0.21945 0.38317 -0.162480 0.148 -.521 0.01 0.01 0.04 0.11 0.12
JUL 18 54299 0.22589 0.37048 -0.162485 -.084 -.559 0.01 0.01 0.02 0.06 0.05
JUL 23 54304 0.22970 0.35708 -0.163715 0.152 -.374 0.01 0.01 0.02 0.05 0.04
JUL 28 54309 0.22920 0.34583 -0.161362 0.368 -.289 0.01 0.01 0.02 0.08 0.05
AUG 2 54314 0.22661 0.33154 -0.161801 -.257 -.680 0.01 0.01 0.02 0.04 0.03
AUG 7 54319 0.22283 0.31853 -0.164352 -.021 -.335 0.01 0.01 0.02 0.06 0.04
AUG 12 54324 0.21689 0.30571 -0.162727 0.136 -.173 0.01 0.02 0.04 0.09 0.09
AUG 17 54329 0.21271 0.29549 -0.163635 -.087 -.346 0.01 0.01 0.03 0.10 0.08
AUG 22 54334 0.20957 0.28209 -0.163551 -.075 -.553 0.04 0.04 0.08 0.18 0.17
AUG 27 54339 0.20179 0.27044 -0.161915 - - 0.02 0.04 0.09 - -
4 - DURATION OF THE DAY AND ANGULAR VELOCITY OF THE EARTH (IERS evaluation).
The data of this section are smoothed, with the same characteristics as
UT1R in section 1. They are corrected for the effects of zonal tides with
periods up to 35 days. Section 2 gives the daily interpolation of D.
Date (0h UTC) DR OmegaR
2007 MJD s (microrad/s)
JUL 3 54284 0.00044 72.921 15110
JUL 8 54289 0.00026 15125
JUL 13 54294 0.00017 15132
JUL 18 54299 0.00005 15142
JUL 23 54304 -0.00001 15147
JUL 28 54309 -0.00006 15152
AUG 2 54314 0.00005 15143
5 - INFORMATION ON TIME SCALES
No leap second will be introduced in UTC on 31 December 2007.
All information concerning time scales : announcements of the
leap seconds (Bulletin C) and of the value of DUT1 (Bulletin D)
can be found in our web/ftp site :
World Wide Web : http://hpiers.obspm.fr
Anonymous ftp : hpiers.obspm.fr or 145.238.100.28
IERS, B 235 (4)
6 - SUMMARY OF CONTRIBUTED EARTH ORIENTATION PARAMETERS SERIES
This section gives the average precision of the individual series contri-
buting to the combination and their average agreement with it. The periods
covered start at the beginning of the first month in Section 1 and end with
the last available value in the individual series considered.
Units : 0.001" for x,y , 0.0001s for UT1, 0.001" for dX, dY.
--------------------------------------------------------------------------------
EOP series Mean formal uncertainty
Periods covered Weighted RMS agreement with Bulletin B
--------------------------------------------------------------------------------
x y UT D dX dY Data Number
VLBI
EOP(AUS) 1 R 1 0.07 0.08 0.04 - - - 15
54284.21 to 54336.27 0.11 0.11 0.09 - - -
EOP(BKG) 3 R 4 0.15 0.08 0.08 - - - 17
54284.21 to 54336.27 0.08 0.12 0.08 - - -
EOP(BKG) 3 R 2 - - 0.10 - - - 55
54286.79 to 54341.79 - - 0.11 - - -
EOP(USNO) 5 R 1 - - 0.10 - - - 56
54284.79 to 54341.79 - - 0.14 - - -
EOP(GSFC) 6 R 1 - - 0.11 - - - 56
54284.79 to 54341.79 - - 0.10 - - -
EOP(IAA) 5 R 2 0.06 0.07 0.04 - 0.04 0.05 16
54284.21 to 54336.29 0.11 0.09 0.08 - 0.04 0.05
EOP(IAA) 5 R 1 - - 0.10 - - - 56
54284.79 to 54341.79 - - 0.13 - - -
EOP(MAO) 3 R 1 0.08 0.09 0.05 - 0.05 0.06 16
54284.24 to 54336.30 0.11 0.09 0.08 - 0.04 0.09
EOP(GSFC) 6 R 1 0.06 0.07 0.03 - - - 16
54284.21 to 54336.27 0.25 0.62 0.10 - - -
EOP(USNO) 6 R 2 0.07 0.07 0.03 - - - 15
54284.21 to 54336.27 0.09 0.09 0.07 - - -
EOP(IVS) 7 R 1 0.04 0.04 0.02 - - - 11
54284.21 to 54329.27 0.07 0.10 0.07 - - -
GPS
EOP(CODE) 98 P 1 0.01 0.01 - 0.07 - - 58
54284.50 to 54341.50 0.03 0.03 - 0.15 - -
EOP(EMR) 96 P 3 0.03 0.03 - 0.04 - - 58
54284.50 to 54341.50 0.04 0.10 - 0.28 - -
EOP(ESOC) 96 P 1 0.01 0.01 - 0.04 - - 58
54284.50 to 54341.50 0.05 0.05 - 0.45 - -
EOP(GFZ) 96 P 2 0.01 0.01 - 0.01 - - 58
54284.50 to 54341.50 0.03 0.03 - 0.24 - -
EOP(IAA) 1 P 1 0.03 0.03 - 0.06 - - 58
54284.50 to 54341.50 0.26 0.80 - 0.34 - -
EOP(JPL) 96 P 3 0.02 0.02 - 0.11 - - 47
54284.50 to 54330.50 0.03 0.04 - 0.35 - -
EOP(NOAA) 96 P 1 0.01 0.01 - 0.00 - - 50
54284.50 to 54333.50 0.14 0.06 - 0.19 - -
EOP(SIO) 96 P 1 0.06 0.07 - 0.17 - - 58
54284.50 to 54341.50 0.07 0.08 - 0.14 - -
EOP(IGS R)96 P 2 0.02 0.03 0.15 0.05 - - 58
54284.50 to 54341.50 0.05 0.05 0.42 0.08 - -
EOP(IGS) 0 P 3 0.02 0.02 0.08 0.08 - - 47
54284.50 to 54330.50 0.02 0.01 0.22 0.10 - -
EOP(IERS) 97 P 1 0.03 0.03 0.16 0.11 - - 58
54284.50 to 54341.50 0.03 0.03 0.26 0.13 - -
SLR
EOP(ASI) 3 L 2 0.06 0.08 - 0.15 - - 50
54284.50 to 54333.50 0.20 0.41 - 0.57 - -
EOP(IAA) 2 L 1 0.04 0.05 0.03 0.03 - - 59
54284.00 to 54342.00 0.17 0.17 0.22 0.18 - -
EOP(MCC) 97 L 1 0.15 0.17 - 0.10 - - 52
54284.00 to 54335.00 0.12 0.10 - 2.69 - -
EOP(ILRS) 5 L 1 0.07 0.08 - 0.17 - - 54
54284.50 to 54337.50 0.21 0.21 - 0.76 - -
Bulletin A
EOP(NEOS) 97 C 1 0.05 0.05 0.08 - - - 59
54284.00 to 54342.00 0.04 0.03 0.08 - - -