BULLETIN B 206
(IAU 2000)
1 april 2005
==============================================================================
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
2005 " " s s 0.001" 0.001"
(0h UTC)
Final Bulletin B values.
FEB 3 53404 0.08667 0.20685 -0.522104 -32.522104 -0.07 -0.36
FEB 8 53409 0.07315 0.20528 -0.525106 -32.525106 0.06 -0.40
FEB 13 53414 0.05918 0.20291 -0.529237 -32.529237 -0.02 -0.34
FEB 18 53419 0.04591 0.20306 -0.533737 -32.533737 0.10 -0.47
FEB 23 53424 0.03320 0.20603 -0.539370 -32.539370 0.05 -0.34
FEB 28 53429 0.02589 0.20965 -0.545675 -32.545675 -0.20 -0.35
MAR 5 53434 0.01518 0.21570 -0.552579 -32.552579 0.01 -0.44
Preliminary extension, to be updated weekly in Bulletin A and monthly
in Bulletin B.
MAR 10 53439 0.00489 0.21932 -0.558265 -32.558265 -0.05 -0.36
MAR 15 53444 -0.00365 0.22314 -0.562376 -32.562376 -0.07 -0.24
MAR 20 53449 -0.00973 0.22566 -0.565507 -32.565507 0.00 0.00
MAR 25 53454 -0.01652 0.23264 -0.568843 -32.568843 0.00 0.00
MAR 30 53459 -0.02461 0.24036 -0.572549 -32.572549 0.00 0.00
APR 4 53464 -0.03295 0.24673 -0.575958 -32.575958 0.00 0.00
APR 9 53469 -0.03999 0.25387 -0.579498 -32.579498 0.00 0.00
APR 14 53474 -0.04647 0.26157 -0.582901 -32.582901 0.00 0.00
APR 19 53479 -0.05233 0.26965 -0.586136 -32.586136 0.00 0.00
APR 24 53484 -0.05756 0.27811 -0.589172 -32.589172 0.00 0.00
APR 29 53489 -0.06211 0.28686 -0.591995 -32.591995 0.00 0.00
MAY 4 53494 -0.06600 0.29588 -0.594559 -32.594559 0.00 0.00
MAY 9 53499 -0.06920 0.30509 -0.596832 -32.596832 0.00 0.00
MAY 14 53504 -0.07171 0.31446 -0.598808 -32.598808 0.00 0.00
MAY 19 53509 -0.07352 0.32391 -0.600464 -32.600464 0.00 0.00
MAY 24 53514 -0.07465 0.33342 -0.601768 -32.601768 0.00 0.00
MAY 29 53519 -0.07508 0.34292 -0.602722 -32.602722 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 206 (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 2003
IERS Annual Report.
2005 MJD x y UT1-UTC UT1-UT1R D dX dY
(0 h UTC) " " s ms ms 0.001" 0.001"
FEB 3 53404 0.08667 0.20685 -0.522426 -0.322 0.426 -0.07 -0.36
FEB 4 53405 0.08392 0.20604 -0.522755 -0.208 0.267 -0.04 -0.49
FEB 5 53406 0.08157 0.20585 -0.522978 0.096 0.160 0.07 -0.61
FEB 6 53407 0.07892 0.20558 -0.523116 0.499 0.342 0.19 -0.52
FEB 7 53408 0.07610 0.20577 -0.523714 0.860 0.457 0.18 -0.38
FEB 8 53409 0.07315 0.20528 -0.524073 1.033 0.581 0.06 -0.40
FEB 9 53410 0.07003 0.20502 -0.524895 0.922 0.990 -0.02 -0.44
FEB 10 53411 0.06686 0.20409 -0.526038 0.521 1.303 -0.04 -0.37
FEB 11 53412 0.06412 0.20361 -0.527460 -0.085 1.517 -0.05 -0.28
FEB 12 53413 0.06167 0.20315 -0.529021 -0.755 1.583 -0.05 -0.25
FEB 13 53414 0.05918 0.20291 -0.530580 -1.342 1.444 -0.02 -0.34
FEB 14 53415 0.05748 0.20302 -0.531881 -1.736 1.205 0.02 -0.42
FEB 15 53416 0.05456 0.20327 -0.532982 -1.879 0.932 0.03 -0.36
FEB 16 53417 0.05210 0.20299 -0.533752 -1.771 0.647 0.04 -0.27
FEB 17 53418 0.04825 0.20283 -0.534293 -1.448 0.464 0.07 -0.30
FEB 18 53419 0.04591 0.20306 -0.534703 -0.966 0.402 0.10 -0.47
FEB 19 53420 0.04238 0.20371 -0.535122 -0.399 0.478 0.09 -0.60
FEB 20 53421 0.04051 0.20436 -0.535685 0.179 0.576 0.04 -0.57
FEB 21 53422 0.03757 0.20513 -0.536298 0.691 0.702 0.02 -0.41
FEB 22 53423 0.03571 0.20559 -0.537108 1.072 0.892 0.03 -0.32
FEB 23 53424 0.03320 0.20603 -0.538094 1.276 1.092 0.05 -0.34
FEB 24 53425 0.03176 0.20599 -0.539294 1.280 1.314 0.00 -0.40
FEB 25 53426 0.03033 0.20657 -0.540713 1.095 1.510 -0.08 -0.41
FEB 26 53427 0.02943 0.20740 -0.542295 0.765 1.694 -0.15 -0.37
FEB 27 53428 0.02772 0.20853 -0.544073 0.359 1.723 -0.19 -0.34
FEB 28 53429 0.02589 0.20965 -0.545711 -0.036 1.646 -0.20 -0.35
MAR 1 53430 0.02411 0.21109 -0.547336 -0.329 1.571 -0.19 -0.39
MAR 2 53431 0.02188 0.21275 -0.548833 -0.447 1.383 -0.16 -0.41
MAR 3 53432 0.01944 0.21397 -0.550097 -0.352 1.187 -0.10 -0.43
MAR 4 53433 0.01716 0.21493 -0.551220 -0.056 1.040 -0.04 -0.46
MAR 5 53434 0.01518 0.21570 -0.552211 0.369 0.969 0.01 -0.44
MAR 6 53435 0.01283 0.21647 -0.553204 0.802 0.905 0.04 -0.34
MAR 7 53436 0.01057 0.21688 -0.554067 1.101 0.994 0.05 -0.25
MAR 8 53437 0.00891 0.21763 -0.555222 1.150 1.220 0.02 -0.27
MAR 9 53438 0.00674 0.21852 -0.556509 0.895 1.348 -0.01 -0.35
MAR 10 53439 0.00489 0.21932 -0.557890 0.375 1.460 -0.05 -0.36
MAR 11 53440 0.00242 0.22022 -0.559382 -0.295 1.534 -0.12 -0.24
MAR 12 53441 0.00068 0.22103 -0.560906 -0.962 1.477 -0.20 -0.14
MAR 13 53442 -0.00153 0.22199 -0.562296 -1.484 1.255 -0.21 -0.15
MAR 14 53443 -0.00246 0.22225 -0.563396 -1.767 0.931 -0.15 -0.22
MAR 15 53444 -0.00365 0.22314 -0.564158 -1.781 0.587 -0.07 -0.24
MAR 16 53445 -0.00560 0.22300 -0.564584 -1.547 0.290 0.03 -0.21
MAR 17 53446 -0.00676 0.22360 -0.564760 -1.122 0.099 0.09 -0.23
MAR 18 53447 -0.00800 0.22378 -0.564808 -0.579 0.028 0.12 -0.30
MAR 19 53448 -0.00893 0.22470 -0.564843 0.001 0.068 0.00 0.00
MAR 20 53449 -0.00973 0.22566 -0.564969 0.538 0.127 0.00 0.00
MAR 21 53450 -0.01068 0.22674 -0.565119 0.962 0.224 0.00 0.00
MAR 22 53451 -0.01171 0.22823 -0.565431 1.218 0.447 0.00 0.00
MAR 23 53452 -0.01314 0.22994 -0.566020 1.276 0.737 0.00 0.00
MAR 24 53453 -0.01524 0.23184 -0.566918 1.131 1.005 0.00 0.00
MAR 25 53454 -0.01652 0.23264 -0.568028 0.815 1.174 0.00 0.00
MAR 26 53455 -0.01771 0.23464 -0.569236 0.391 1.222 0.00 0.00
MAR 27 53456 -0.01918 0.23572 -0.570440 -0.051 1.171 0.00 0.00
MAR 28 53457 -0.02073 0.23804 -0.571545 -0.410 0.949 0.00 0.00
MAR 29 53458 -0.02264 0.23875 -0.572460 -0.596 0.829 0.00 0.00
MAR 30 53459 -0.02461 0.24036 -0.573109 -0.560 0.505 0.00 0.00
MAR 31 53460 -0.02691 0.24075 -0.573481 -0.304 0.308 0.00 0.00
IERS, B 206 (3)
3 - NORMAL VALUES OF THE EARTH ORIENTATION PARAMETERS AT FIVE-DAY INTERVALS
(IERS evaluation).
Raw normal values Uncertainties
2005 MJD x y UT1-UTC dX dY x y UT1 dX dY
(0 h UTC) " " s 0.001" 0.001" 0.0001s 0.001"
FEB 3 53404 0.08666 0.20686 -0.522424 -.077 -.352 0.02 0.02 0.02 0.02 0.03
FEB 8 53409 0.07315 0.20528 -0.524070 0.017 -.443 0.01 0.02 0.02 0.02 0.02
FEB 13 53414 0.05918 0.20291 -0.530580 -.039 -.345 0.01 0.01 0.01 0.02 0.02
FEB 18 53419 0.04588 0.20305 -0.534700 0.112 -.422 0.02 0.02 0.02 0.05 0.05
FEB 23 53424 0.03319 0.20603 -0.538090 0.076 -.345 0.01 0.01 0.01 0.02 0.02
FEB 28 53429 0.02589 0.20966 -0.545712 -.200 -.387 0.02 0.02 0.02 0.04 0.04
MAR 5 53434 0.01518 0.21568 -0.552210 0.027 -.406 0.02 0.02 0.01 0.04 0.04
MAR 10 53439 0.00488 0.21931 -0.557891 -.053 -.372 0.01 0.01 0.01 0.02 0.02
MAR 15 53444 -0.00363 0.22318 -0.564157 -.067 -.244 0.02 0.02 0.02 0.03 0.04
MAR 20 53449 -0.00972 0.22565 -0.564971 - - 0.01 0.01 0.01 - -
MAR 25 53454 -0.01652 0.23264 -0.568023 - - 0.01 0.02 0.03 - -
MAR 30 53459 -0.02461 0.24036 - - - 0.04 0.05 - - -
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
2005 MJD s (microrad/s)
FEB 3 53404 0.00044 72.921 15110
FEB 8 53409 0.00063 15094
FEB 13 53414 0.00094 15067
FEB 18 53419 0.00094 15067
FEB 23 53424 0.00120 15045
FEB 28 53429 0.00129 15038
MAR 5 53434 0.00143 15026
5 - INFORMATION ON TIME SCALES
No leap second was introduced in UTC on 31 December 2004.
No leap second will be introduced in UTC on 30 June 2005.
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 206 (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 0.08 0.07 0.03 - - - 13
53405.27 to 53447.27 0.17 0.18 0.05 - - -
EOP(BKG) 3 R 4 0.13 0.10 0.08 - - - 14
53405.27 to 53447.27 0.16 0.17 0.06 - - -
EOP(BKG) 3 R 2 - - 0.11 - - - 46
53404.79 to 53452.79 - - 0.13 - - -
EOP(USNO) 5 R 1 - - 0.11 - - - 46
53404.79 to 53452.79 - - 0.12 - - -
EOP(GSFC) 4 R 2 0.09 0.07 0.07 - - - 14
53405.27 to 53447.27 0.17 0.13 0.08 - - -
EOP(GSFC) 4 R 1 - - 0.11 - - - 46
53404.79 to 53452.79 - - 0.13 - - -
EOP(IAA) 5 R 1 0.08 0.07 0.03 - 0.13 0.06 13
53405.27 to 53447.27 0.22 0.16 0.08 - 0.27 0.05
EOP(IAA) 3 R 3 - - 0.11 - - - 46
53404.79 to 53452.79 - - 0.12 - - -
EOP(SPBU) 3 R 3 0.22 0.27 0.14 - - - 13
53405.27 to 53447.27 0.13 0.13 0.11 - - -
EOP(SPBU) 2 R 1 - - 0.14 - - - 33
53404.79 to 53452.79 - - 0.13 - - -
EOP(MAO) 3 R 1 0.09 0.08 0.03 - 0.16 0.06 13
53405.27 to 53447.26 0.26 0.18 0.10 - 0.24 0.11
EOP(USNO) 5 R 1 0.07 0.07 0.02 - - - 13
53405.27 to 53447.27 0.13 0.17 0.05 - - -
EOP(IVS) 0 R 1 0.06 0.06 0.02 - - - 11
53405.00 to 53440.00 0.26 0.15 0.06 - - -
GPS
EOP(CODE) 98 P 1 0.02 0.02 - 0.18 - - 56
53404.50 to 53459.50 0.03 0.09 - 0.28 - -
EOP(EMR) 96 P 3 0.03 0.03 - 0.04 - - 56
53404.50 to 53459.50 0.06 0.17 - 0.52 - -
EOP(ESOC) 96 P 1 0.02 0.02 - 0.08 - - 55
53404.50 to 53458.50 0.06 0.12 - 0.34 - -
EOP(GFZ) 96 P 2 0.01 0.01 - 0.01 - - 56
53404.50 to 53459.50 0.03 0.06 - 0.26 - -
EOP(IAA) 1 P 1 0.03 0.03 - 0.06 - - 55
53404.50 to 53458.50 0.15 0.37 - 0.41 - -
EOP(JPL) 96 P 3 0.02 0.02 - 0.15 - - 45
53404.50 to 53448.50 0.05 0.03 - 0.28 - -
EOP(NOAA) 96 P 1 0.01 0.01 - 0.02 - - 50
53404.50 to 53453.50 0.13 0.13 - 0.34 - -
EOP(SIO) 96 P 1 0.05 0.05 - 0.13 - - 56
53404.50 to 53459.50 0.07 0.09 - 0.34 - -
EOP(IGS F)95 P 2 0.02 0.03 0.07 0.06 - - 38
53404.50 to 53441.50 0.04 0.12 0.24 0.22 - -
EOP(IGS R)96 P 2 0.03 0.04 0.18 0.07 - - 56
53404.50 to 53459.50 0.07 0.10 0.60 0.20 - -
EOP(IERS) 97 P 1 0.03 0.03 0.25 0.13 - - 56
53404.50 to 53459.50 0.02 0.03 0.32 0.19 - -
SLR
EOP(ASI) 3 L 2 0.09 0.10 - 0.20 - - 55
53404.50 to 53458.50 0.23 0.36 - 0.91 - -
EOP(ILRS) 5 L 1 0.13 0.15 - 0.29 - - 52
53404.50 to 53455.50 0.34 0.25 - 0.84 - -
EOP(DUT) 98 L 1 0.12 0.13 - - - - 45
53404.00 to 53448.00 0.56 0.38 - - - -
EOP(IAA) 2 L 1 0.05 0.05 0.03 0.03 - - 55
53404.00 to 53458.00 0.26 0.23 0.76 0.37 - -
EOP(MCC) 97 L 1 0.06 0.07 - 0.10 - - 50
53404.00 to 53453.00 0.18 0.28 - 0.62 - -
Bulletin A
EOP(NEOS) 97 C 1 0.07 0.07 0.08 - - - 57
53404.00 to 53460.00 0.13 0.21 0.32 - - -