BULLETIN B 244
(IAU 2000)
6 June 2008
==============================================================================
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
2008 " " s s 0.001" 0.001"
(0h UTC)
Final Bulletin B values.
APR 3 54559 -0.05898 0.49360 -0.365195 -33.365195 0.28 -0.16
APR 8 54564 -0.04512 0.50246 -0.371076 -33.371076 0.13 0.04
APR 13 54569 -0.03419 0.51190 -0.376015 -33.376015 0.24 -0.15
APR 18 54574 -0.02040 0.51738 -0.380810 -33.380810 0.39 -0.19
APR 23 54579 -0.00576 0.52751 -0.386299 -33.386299 0.31 -0.28
APR 28 54584 0.00955 0.53181 -0.391987 -33.391987 0.33 -0.18
MAY 3 54589 0.02442 0.53775 -0.397722 -33.397722 0.34 -0.32
Preliminary extension, to be updated weekly in Bulletin A and monthly
in Bulletin B.
MAY 8 54594 0.03976 0.53992 -0.404073 -33.404073 0.43 -0.04
MAY 13 54599 0.05282 0.54261 -0.410337 -33.410337 0.34 -0.23
MAY 18 54604 0.07143 0.54274 -0.416630 -33.416630 0.11 0.04
MAY 23 54609 0.08818 0.54158 -0.421804 -33.421804 0.30 -0.51
MAY 28 54614 0.10753 0.54148 -0.425554 -33.425554 0.02 -0.04
JUN 2 54619 0.12266 0.53929 -0.428916 -33.428916 0.02 -0.04
JUN 7 54624 0.13790 0.53490 -0.432399 -33.432399 0.00 0.00
JUN 12 54629 0.15161 0.53097 -0.436023 -33.436023 0.00 0.00
JUN 17 54634 0.16652 0.52395 -0.439384 -33.439384 0.00 0.00
JUN 22 54639 0.17932 0.51537 -0.442276 -33.442276 0.00 0.00
JUN 27 54644 0.19402 0.50746 -0.444749 -33.444749 0.00 0.00
JUL 2 54649 0.20796 0.49857 -0.446841 -33.446841 0.00 0.00
JUL 7 54654 0.21967 0.48891 -0.448557 -33.448557 0.00 0.00
JUL 12 54659 0.22781 0.47742 -0.449987 -33.449987 0.00 0.00
JUL 17 54664 0.23664 0.46359 -0.451125 -33.451125 0.00 0.00
JUL 22 54669 0.24571 0.45062 -0.452041 -33.452041 0.00 0.00
JUL 27 54674 0.25411 0.43640 -0.452845 -33.452845 0.00 0.00
AUG 1 54679 0.25922 0.42157 -0.453545 -33.453545 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 244 (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.
2008 MJD x y UT1-UTC UT1-UT1R D dX dY
(0 h UTC) " " s ms ms 0.001" 0.001"
APR 3 54559 -0.05898 0.49360 -0.363669 1.526 1.564 0.28 -0.16
APR 4 54560 -0.05609 0.49541 -0.365281 0.997 1.757 0.30 -0.16
APR 5 54561 -0.05361 0.49708 -0.367119 0.321 1.906 0.29 -0.09
APR 6 54562 -0.05089 0.49878 -0.369042 -0.358 1.875 0.23 0.00
APR 7 54563 -0.04791 0.50049 -0.370824 -0.884 1.595 0.16 0.08
APR 8 54564 -0.04512 0.50246 -0.372220 -1.143 1.214 0.13 0.04
APR 9 54565 -0.04294 0.50478 -0.373279 -1.103 0.879 0.16 -0.03
APR 10 54566 -0.04109 0.50688 -0.374051 -0.818 0.645 0.23 -0.12
APR 11 54567 -0.03890 0.50869 -0.374626 -0.409 0.533 0.28 -0.19
APR 12 54568 -0.03661 0.51040 -0.375191 -0.015 0.556 0.28 -0.21
APR 13 54569 -0.03419 0.51190 -0.375765 0.250 0.691 0.24 -0.15
APR 14 54570 -0.03161 0.51300 -0.376574 0.326 0.940 0.20 -0.11
APR 15 54571 -0.02905 0.51385 -0.377652 0.206 1.187 0.21 -0.09
APR 16 54572 -0.02649 0.51463 -0.378917 -0.070 1.306 0.28 -0.10
APR 17 54573 -0.02365 0.51570 -0.380246 -0.432 1.358 0.36 -0.14
APR 18 54574 -0.02040 0.51738 -0.381609 -0.799 1.349 0.39 -0.19
APR 19 54575 -0.01695 0.51942 -0.382944 -1.092 1.294 0.34 -0.23
APR 20 54576 -0.01374 0.52165 -0.384165 -1.247 1.168 0.30 -0.28
APR 21 54577 -0.01096 0.52385 -0.385245 -1.225 0.987 0.26 -0.30
APR 22 54578 -0.00827 0.52584 -0.386147 -1.015 0.837 0.28 -0.29
APR 23 54579 -0.00576 0.52751 -0.386934 -0.635 0.708 0.31 -0.28
APR 24 54580 -0.00310 0.52847 -0.387592 -0.131 0.617 0.34 -0.25
APR 25 54581 -0.00005 0.52918 -0.388194 0.436 0.580 0.35 -0.21
APR 26 54582 0.00307 0.52996 -0.388790 0.993 0.601 0.32 -0.18
APR 27 54583 0.00618 0.53077 -0.389385 1.465 0.696 0.32 -0.17
APR 28 54584 0.00955 0.53181 -0.390203 1.783 0.884 0.33 -0.18
APR 29 54585 0.01290 0.53322 -0.391216 1.888 1.152 0.33 -0.20
APR 30 54586 0.01598 0.53473 -0.392514 1.744 1.450 0.33 -0.23
MAY 1 54587 0.01894 0.53607 -0.394103 1.352 1.652 0.33 -0.26
MAY 2 54588 0.02173 0.53705 -0.395776 0.769 1.779 0.33 -0.29
MAY 3 54589 0.02442 0.53775 -0.397616 0.106 1.860 0.34 -0.32
MAY 4 54590 0.02707 0.53836 -0.399470 -0.490 1.807 0.32 -0.34
MAY 5 54591 0.02998 0.53861 -0.401151 -0.881 1.576 0.33 -0.30
MAY 6 54592 0.03350 0.53880 -0.402576 -0.988 1.253 0.36 -0.22
MAY 7 54593 0.03688 0.53934 -0.403656 -0.820 0.952 0.41 -0.12
MAY 8 54594 0.03976 0.53992 -0.404550 -0.477 0.815 0.43 -0.04
MAY 9 54595 0.04247 0.54071 -0.405429 -0.101 0.875 0.40 -0.01
MAY 10 54596 0.04481 0.54152 -0.406369 0.171 1.025 0.33 -0.04
MAY 11 54597 0.04730 0.54188 -0.407454 0.257 1.270 0.27 -0.11
MAY 12 54598 0.05001 0.54230 -0.408895 0.141 1.498 0.28 -0.18
MAY 13 54599 0.05282 0.54261 -0.410473 -0.136 1.632 0.34 -0.23
MAY 14 54600 0.05636 0.54268 -0.412142 -0.501 1.684 0.42 -0.24
MAY 15 54601 0.06024 0.54269 -0.413802 -0.873 1.631 0.44 -0.20
MAY 16 54602 0.06413 0.54269 -0.415404 -1.178 1.525 0.36 -0.13
MAY 17 54603 0.06795 0.54271 -0.416835 -1.355 1.318 0.22 -0.03
MAY 18 54604 0.07143 0.54274 -0.417995 -1.365 1.097 0.11 0.04
MAY 19 54605 0.07459 0.54276 -0.419053 -1.191 0.893 0.08 0.03
MAY 20 54606 0.07766 0.54272 -0.419792 -0.844 0.643 0.16 -0.11
MAY 21 54607 0.08092 0.54243 -0.420325 -0.362 0.453 0.30 -0.39
MAY 22 54608 0.08434 0.54193 -0.420784 0.197 0.328 0.37 -0.58
MAY 23 54609 0.08818 0.54158 -0.421042 0.763 0.279 0.30 -0.51
MAY 24 54610 0.09222 0.54154 -0.421320 1.262 0.338 0.02 -0.04
MAY 25 54611 0.09609 0.54134 -0.421726 1.628 0.499 0.02 -0.04
MAY 26 54612 0.10002 0.54131 -0.422296 1.807 0.703 0.02 -0.04
MAY 27 54613 0.10378 0.54156 -0.423078 1.766 0.868 0.02 -0.04
MAY 28 54614 0.10753 0.54148 -0.424056 1.499 1.022 0.02 -0.04
MAY 29 54615 0.11129 0.54125 -0.425141 1.039 1.171 0.02 -0.04
MAY 30 54616 0.11453 0.54070 -0.426318 0.463 1.272 0.02 -0.04
MAY 31 54617 0.11733 0.54010 -0.427587 -0.111 1.228 0.02 -0.04
JUN 1 54618 0.11999 0.53979 -0.428736 -0.552 1.034 0.02 -0.04
JUN 2 54619 0.12266 0.53929 -0.429675 -0.759 0.806 0.02 -0.04
JUN 3 54620 0.12559 0.53852 -0.430363 -0.697 0.574 0.02 -0.04
JUN 4 54621 0.12918 0.53738 -0.430805 -0.423 0.348 0.02 -0.04
JUN 5 54622 0.13256 0.53628 -0.431066 -0.064 0.159 0.02 -0.04
JUN 6 54623 0.13520 0.53557 -0.431461 0.233 0.194 0.00 0.00
JUN 7 54624 0.13790 0.53490 -0.432048 0.351 0.319 0.00 0.00
JUN 8 54625 0.14073 0.53424 -0.432871 0.248 0.477 0.00 0.00
JUN 9 54626 0.14337 0.53365 -0.433895 -0.046 0.595 0.00 0.00
JUN 10 54627 0.14593 0.53297 -0.435032 -0.451 0.635 0.00 0.00
JUN 11 54628 0.14869 0.53206 -0.436177 -0.873 0.592 0.00 0.00
JUN 12 54629 0.15161 0.53097 -0.437248 -1.226 0.480 0.00 0.00
JUN 13 54630 0.15466 0.52968 -0.438177 -1.448 0.321 0.00 0.00
JUN 14 54631 0.15774 0.52835 -0.438920 -1.501 0.137 0.00 0.00
JUN 15 54632 0.16071 0.52692 -0.439461 -1.368 -0.051 0.00 0.00
JUN 16 54633 0.16366 0.52541 -0.439805 -1.058 -0.219 0.00 0.00
JUN 17 54634 0.16652 0.52395 -0.439985 -0.601 -0.344 0.00 0.00
JUN 18 54635 0.16931 0.52235 -0.440051 -0.053 -0.406 0.00 0.00
JUN 19 54636 0.17207 0.52068 -0.440079 0.517 -0.394 0.00 0.00
JUN 20 54637 0.17461 0.51898 -0.440138 1.035 -0.310 0.00 0.00
JUN 21 54638 0.17694 0.51720 -0.440302 1.431 -0.163 0.00 0.00
JUN 22 54639 0.17932 0.51537 -0.440625 1.651 0.028 0.00 0.00
JUN 23 54640 0.18205 0.51361 -0.441135 1.664 0.236 0.00 0.00
JUN 24 54641 0.18508 0.51198 -0.441845 1.466 0.431 0.00 0.00
JUN 25 54642 0.18815 0.51043 -0.442717 1.088 0.578 0.00 0.00
JUN 26 54643 0.19115 0.50893 -0.443691 0.594 0.643 0.00 0.00
JUN 27 54644 0.19402 0.50746 -0.444670 0.079 0.602 0.00 0.00
JUN 28 54645 0.19672 0.50592 -0.445549 -0.348 0.449 0.00 0.00
JUN 29 54646 0.19933 0.50417 -0.446221 -0.586 0.213 0.00 0.00
JUN 30 54647 0.20200 0.50238 -0.446637 -0.584 -0.044 0.00 0.00
JUL 1 54648 0.20495 0.50052 -0.446816 -0.361 -0.243 0.00 0.00
JUL 2 54649 0.20796 0.49857 -0.446851 -0.009 -0.318 0.00 0.00
JUL 3 54650 0.21089 0.49664 -0.446883 0.330 -0.245 0.00 0.00
JUL 4 54651 0.21367 0.49475 -0.447047 0.522 -0.056 0.00 0.00
JUL 5 54652 0.21606 0.49289 -0.447424 0.484 0.176 0.00 0.00
JUL 6 54653 0.21805 0.49095 -0.448022 0.216 0.372 0.00 0.00
JUL 7 54654 0.21967 0.48891 -0.448770 -0.213 0.473 0.00 0.00
JUL 8 54655 0.22130 0.48670 -0.449563 -0.698 0.463 0.00 0.00
JUL 9 54656 0.22292 0.48449 -0.450295 -1.133 0.356 0.00 0.00
JUL 10 54657 0.22441 0.48235 -0.450884 -1.436 0.185 0.00 0.00
JUL 11 54658 0.22599 0.48000 -0.451285 -1.561 -0.018 0.00 0.00
JUL 12 54659 0.22781 0.47742 -0.451477 -1.490 -0.226 0.00 0.00
JUL 13 54660 0.22975 0.47476 -0.451466 -1.230 -0.415 0.00 0.00
JUL 14 54661 0.23160 0.47217 -0.451286 -0.810 -0.564 0.00 0.00
JUL 15 54662 0.23341 0.46952 -0.450983 -0.282 -0.653 0.00 0.00
JUL 16 54663 0.23513 0.46663 -0.450629 0.288 -0.667 0.00 0.00
JUL 17 54664 0.23664 0.46359 -0.450300 0.825 -0.604 0.00 0.00
JUL 18 54665 0.23820 0.46077 -0.450068 1.252 -0.471 0.00 0.00
JUL 19 54666 0.23997 0.45822 -0.449999 1.510 -0.284 0.00 0.00
JUL 20 54667 0.24181 0.45578 -0.450136 1.559 -0.073 0.00 0.00
JUL 21 54668 0.24367 0.45329 -0.450478 1.394 0.128 0.00 0.00
JUL 22 54669 0.24571 0.45062 -0.450998 1.044 0.280 0.00 0.00
JUL 23 54670 0.24780 0.44784 -0.451635 0.575 0.350 0.00 0.00
JUL 24 54671 0.24966 0.44505 -0.452293 0.083 0.319 0.00 0.00
JUL 25 54672 0.25132 0.44218 -0.452870 -0.331 0.186 0.00 0.00
JUL 26 54673 0.25282 0.43929 -0.453271 -0.576 -0.024 0.00 0.00
JUL 27 54674 0.25411 0.43640 -0.453441 -0.597 -0.262 0.00 0.00
JUL 28 54675 0.25519 0.43332 -0.453391 -0.397 -0.463 0.00 0.00
JUL 29 54676 0.25612 0.43024 -0.453181 -0.047 -0.566 0.00 0.00
JUL 30 54677 0.25715 0.42728 -0.452938 0.337 -0.534 0.00 0.00
JUL 31 54678 0.25825 0.42437 -0.452792 0.618 -0.372 0.00 0.00
AUG 1 54679 0.25922 0.42157 -0.452855 0.690 -0.132 0.00 0.00
IERS, B 244 (3)
3 - NORMAL VALUES OF THE EARTH ORIENTATION PARAMETERS AT FIVE-DAY INTERVALS
(IERS evaluation).
Raw normal values Uncertainties
2008 MJD x y UT1-UTC dX dY x y UT1 dX dY
(0 h UTC) " " s 0.001" 0.001" 0.0001s 0.001"
APR 3 54559 -0.05899 0.49359 -0.363668 0.283 -.196 0.01 0.01 0.01 0.02 0.03
APR 8 54564 -0.04513 0.50245 -0.372210 0.053 0.120 0.02 0.02 0.01 0.03 0.06
APR 13 54569 -0.03420 0.51188 -0.375763 0.191 -.115 0.01 0.01 0.01 0.02 0.04
APR 18 54574 -0.02041 0.51736 -0.381610 0.411 -.098 0.01 0.01 0.02 0.08 0.11
APR 23 54579 -0.00576 0.52749 -0.386930 0.283 -.230 0.01 0.01 0.01 0.02 0.04
APR 28 54584 0.00953 0.53180 -0.390201 0.314 -.146 0.01 0.01 0.01 0.01 0.02
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
2008 MJD s (microrad/s)
APR 3 54559 0.00115 72.921 15050
APR 8 54564 0.00111 15053
APR 13 54569 0.00087 15073
APR 18 54574 0.00101 15061
APR 23 54579 0.00116 15048
APR 28 54584 0.00111 15053
MAY 3 54589 0.00121 15045
5 - INFORMATION ON TIME SCALES
No leap second will be introduced in UTC on 30 June 2008
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