BULLETIN B 240
(IAU 2000)
4 February 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
2007/08 " " s s 0.001" 0.001"
(0h UTC)
Final Bulletin B values.
DEC 5 54439 -0.03673 0.21721 -0.250380 -33.250380 -0.03 0.02
DEC 10 54444 -0.04767 0.22401 -0.254834 -33.254834 0.07 -0.01
DEC 15 54449 -0.05466 0.23030 -0.258377 -33.258377 -0.13 -0.16
DEC 20 54454 -0.06100 0.23772 -0.262044 -33.262044 -0.11 -0.07
DEC 25 54459 -0.06731 0.24616 -0.266370 -33.266370 0.20 -0.26
DEC 30 54464 -0.07643 0.25480 -0.270381 -33.270381 -0.34 0.64
JAN 4 54469 -0.08555 0.26386 -0.274977 -33.274977 0.23 -0.25
Preliminary extension, to be updated weekly in Bulletin A and monthly
in Bulletin B.
JAN 9 54474 -0.09601 0.27266 -0.280299 -33.280299 0.02 0.16
JAN 14 54479 -0.10499 0.28578 -0.284536 -33.284536 0.08 0.00
JAN 19 54484 -0.11398 0.29712 -0.288769 -33.288769 0.02 -0.04
JAN 24 54489 -0.11584 0.30910 -0.293142 -33.293142 0.02 -0.04
JAN 29 54494 -0.11849 0.32188 -0.298727 -33.298727 0.02 -0.04
FEB 3 54499 -0.11987 0.33561 -0.304307 -33.304307 0.02 -0.04
FEB 8 54504 -0.12140 0.34947 -0.309990 -33.309990 0.00 0.00
FEB 13 54509 -0.12013 0.36338 -0.315796 -33.315796 0.00 0.00
FEB 18 54514 -0.12006 0.37635 -0.321750 -33.321750 0.00 0.00
FEB 23 54519 -0.11762 0.38977 -0.327865 -33.327865 0.00 0.00
FEB 28 54524 -0.11728 0.40371 -0.334169 -33.334169 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 240 (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.
2007/08 MJD x y UT1-UTC UT1-UT1R D dX dY
(0 h UTC) " " s ms ms 0.001" 0.001"
DEC 5 54439 -0.03673 0.21721 -0.251598 -1.218 1.210 -0.03 0.02
DEC 6 54440 -0.03966 0.21858 -0.252665 -1.255 0.961 0.00 0.11
DEC 7 54441 -0.04236 0.21990 -0.253500 -1.120 0.699 0.05 0.17
DEC 8 54442 -0.04454 0.22114 -0.254096 -0.812 0.454 0.12 0.17
DEC 9 54443 -0.04624 0.22244 -0.254435 -0.361 0.278 0.11 0.08
DEC 10 54444 -0.04767 0.22401 -0.254653 0.181 0.185 0.07 -0.01
DEC 11 54445 -0.04908 0.22551 -0.254811 0.745 0.186 -0.02 -0.09
DEC 12 54446 -0.05029 0.22670 -0.255026 1.250 0.305 -0.11 -0.14
DEC 13 54447 -0.05160 0.22779 -0.255398 1.620 0.453 -0.16 -0.16
DEC 14 54448 -0.05313 0.22889 -0.255914 1.792 0.632 -0.16 -0.16
DEC 15 54449 -0.05466 0.23030 -0.256650 1.727 0.852 -0.13 -0.16
DEC 16 54450 -0.05616 0.23183 -0.257648 1.425 1.108 -0.07 -0.11
DEC 17 54451 -0.05756 0.23344 -0.258866 0.929 1.286 -0.10 -0.06
DEC 18 54452 -0.05889 0.23504 -0.260160 0.327 1.340 -0.14 -0.04
DEC 19 54453 -0.06004 0.23636 -0.261469 -0.260 1.320 -0.15 -0.05
DEC 20 54454 -0.06100 0.23772 -0.262747 -0.703 1.193 -0.11 -0.07
DEC 21 54455 -0.06185 0.23934 -0.263850 -0.905 0.932 -0.06 -0.04
DEC 22 54456 -0.06277 0.24104 -0.264612 -0.835 0.652 0.00 -0.06
DEC 23 54457 -0.06384 0.24272 -0.265177 -0.545 0.510 0.11 -0.14
DEC 24 54458 -0.06528 0.24450 -0.265675 -0.155 0.497 0.16 -0.19
DEC 25 54459 -0.06731 0.24616 -0.266178 0.192 0.585 0.20 -0.26
DEC 26 54460 -0.06954 0.24767 -0.266819 0.378 0.739 0.16 -0.22
DEC 27 54461 -0.07130 0.24918 -0.267624 0.352 0.918 0.07 -0.06
DEC 28 54462 -0.07292 0.25099 -0.268639 0.129 1.085 -0.06 0.15
DEC 29 54463 -0.07470 0.25276 -0.269699 -0.222 1.217 -0.21 0.39
DEC 30 54464 -0.07643 0.25480 -0.270997 -0.617 1.236 -0.34 0.64
DEC 31 54465 -0.07856 0.25694 -0.272236 -0.970 1.130 -0.42 0.79
JAN 1 54466 -0.08052 0.25843 -0.273325 -1.218 1.034 -0.42 0.78
JAN 2 54467 -0.08185 0.26008 -0.274309 -1.315 0.927 -0.26 0.53
JAN 3 54468 -0.08336 0.26199 -0.275192 -1.235 0.803 -0.02 0.14
JAN 4 54469 -0.08555 0.26386 -0.275954 -0.977 0.692 0.23 -0.25
IERS, B 240 (3)
3 - NORMAL VALUES OF THE EARTH ORIENTATION PARAMETERS AT FIVE-DAY INTERVALS
(IERS evaluation).
Raw normal values Uncertainties
2007/08 MJD x y UT1-UTC dX dY x y UT1 dX dY
(0 h UTC) " " s 0.001" 0.001" 0.0001s 0.001"
DEC 5 54439 -0.03674 0.21726 -0.251599 -.013 -.015 0.02 0.02 0.01 0.02 0.03
DEC 10 54444 -0.04770 0.22400 -0.254653 0.098 0.021 0.01 0.02 0.01 0.02 0.03
DEC 15 54449 -0.05467 0.23029 -0.256643 -.123 -.155 0.02 0.02 0.02 0.07 0.10
DEC 20 54454 -0.06101 0.23774 -0.262742 -.088 -.055 0.01 0.01 0.01 0.02 0.02
DEC 25 54459 -0.06732 0.24615 -0.266171 0.200 -.233 0.01 0.02 0.01 0.03 0.06
DEC 30 54464 -0.07645 0.25481 -0.271002 -.384 0.665 0.02 0.02 0.03 0.08 0.13
JAN 4 54469 -0.08556 0.26385 -0.275956 0.198 -.204 0.01 0.01 0.01 0.02 0.03
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
2007/08 MJD s (microrad/s)
DEC 5 54439 0.00110 72.921 15054
DEC 10 54444 0.00076 15083
DEC 15 54449 0.00067 15090
DEC 20 54454 0.00086 15074
DEC 25 54459 0.00087 15073
DEC 30 54464 0.00085 15075
JAN 4 54469 0.00104 15059
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
IERS, B 240 (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 0.06 0.08 0.03 - - - 8
54441.27 to 54468.21 0.45 0.34 0.17 - - -
EOP(BKG) 3 R 4 0.07 0.06 0.02 - - - 8
54441.27 to 54468.21 0.11 0.23 0.05 - - -
EOP(BKG) 3 R 2 - - 0.09 - - - 24
54439.79 to 54468.79 - - 0.17 - - -
EOP(USNO) 5 R 1 - - 0.12 - - - 24
54439.79 to 54468.79 - - 0.14 - - -
EOP(GSFC) 6 R 1 - - 0.11 - - - 24
54439.79 to 54468.79 - - 0.12 - - -
EOP(IAA) 5 R 2 0.05 0.06 0.02 - - - 8
54441.27 to 54468.21 0.18 0.13 0.05 - - -
EOP(IAA) 5 R 1 - - 0.11 - - - 24
54439.79 to 54468.79 - - 0.26 - - -
EOP(MAO) 3 R 1 0.07 0.08 0.03 - - - 8
54441.23 to 54468.26 0.11 0.13 0.06 - - -
EOP(GSFC) 7 R 1 0.45 0.55 0.12 - - - 9
54441.27 to 54468.21 0.15 0.39 0.05 - - -
EOP(USNO) 6 R 2 0.06 0.06 0.02 - - - 8
54441.27 to 54468.21 0.10 0.12 0.05 - - -
EOP(IVS) 2 R 1 0.05 0.06 0.02 - - - 8
54441.27 to 54468.21 0.10 0.15 0.04 - - -
GPS
EOP(CODE) 98 P 1 0.01 0.01 - 0.06 - - 30
54439.50 to 54468.50 0.04 0.05 - 0.13 - -
EOP(EMR) 96 P 3 0.03 0.03 - 0.04 - - 27
54439.50 to 54465.50 0.06 0.09 - 0.11 - -
EOP(ESOC) 96 P 1 0.01 0.01 - 0.03 - - 27
54439.50 to 54465.50 0.04 0.05 - 0.17 - -
EOP(GFZ) 96 P 2 0.00 0.00 - 0.01 - - 27
54439.50 to 54465.50 0.04 0.04 - 0.08 - -
EOP(IAA) 1 P 1 0.03 0.03 - 0.06 - - 30
54439.50 to 54468.50 0.17 0.22 - 0.32 - -
EOP(JPL) 96 P 3 0.01 0.01 - 0.05 - - 30
54439.50 to 54468.50 0.11 0.16 - 2.32 - -
EOP(NOAA) 96 P 1 0.00 0.00 - 0.00 - - 30
54439.50 to 54468.50 0.10 0.08 - 0.21 - -
EOP(SIO) 96 P 1 0.02 0.02 - 0.05 - - 30
54439.50 to 54468.50 0.03 0.04 - 0.16 - -
EOP(IGS R)96 P 2 0.02 0.03 0.23 0.05 - - 30
54439.50 to 54468.50 0.04 0.04 0.45 0.17 - -
EOP(IGS) 7 P 1 0.02 0.02 0.13 0.08 - - 30
54439.50 to 54468.50 0.01 0.02 0.26 0.07 - -
SLR
EOP(ASI) 3 L 2 0.08 0.08 - 0.23 - - 30
54439.50 to 54468.50 0.27 0.25 - 0.52 - -
EOP(ILRS) 5 L 1 0.08 0.08 - 0.20 - - 25
54439.50 to 54463.50 0.22 0.32 - 0.37 - -
EOP(IAA) 2 L 1 0.04 0.05 0.02 0.02 - - 31
54439.00 to 54469.00 0.15 0.30 0.35 0.14 - -
EOP(MCC) 97 L 1 0.19 0.21 - 0.21 - - 31
54439.00 to 54469.00 0.14 0.30 - 1.47 - -
Bulletin A
EOP(NEOS) 97 C 1 0.04 0.06 0.04 - - - 31
54439.00 to 54469.00 0.06 0.09 0.16 - - -