Since July 2007, Bulletin adopts the new 05C04 EOP system. This change results
in a jump of less than 0.5 mas in polar motion and 5 microseconds in UT1-UTC.
BULLETIN B 233
(IAU 2000)
28 June 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.
MAY 4 54224 0.08506 0.48999 -0.110915 -33.110915 0.28 -0.49
MAY 9 54229 0.09545 0.48590 -0.117022 -33.117022 0.29 -0.35
MAY 14 54234 0.10649 0.48251 -0.123675 -33.123675 0.10 -0.38
MAY 19 54239 0.11914 0.47808 -0.130551 -33.130551 0.15 -0.73
MAY 24 54244 0.12901 0.47274 -0.136150 -33.136150 0.17 -0.27
MAY 29 54249 0.13882 0.46748 -0.141018 -33.141018 0.03 -0.34
JUN 3 54254 0.15155 0.45900 -0.145284 -33.145284 0.25 -0.40
Preliminary extension, to be updated weekly in Bulletin A and monthly
in Bulletin B.
JUN 8 54259 0.16239 0.45154 -0.148428 -33.148428 0.18 -0.37
JUN 13 54264 0.17334 0.44332 -0.150845 -33.150845 0.09 -0.51
JUN 18 54269 0.18247 0.43365 -0.152867 -33.152867 0.00 0.00
JUN 23 54274 0.19363 0.42499 -0.154943 -33.154943 0.00 0.00
JUN 28 54279 0.20523 0.41652 -0.156999 -33.156999 0.00 0.00
JUL 3 54284 0.20984 0.40572 -0.158916 -33.158916 0.00 0.00
JUL 8 54289 0.21436 0.39399 -0.160494 -33.160494 0.00 0.00
JUL 13 54294 0.22251 0.38200 -0.161921 -33.161921 0.00 0.00
JUL 18 54299 0.22953 0.36711 -0.163243 -33.163243 0.00 0.00
JUL 23 54304 0.23106 0.35313 -0.164545 -33.164545 0.00 0.00
JUL 28 54309 0.23115 0.33835 -0.165838 -33.165838 0.00 0.00
AUG 2 54314 0.23022 0.32343 -0.167180 -33.167180 0.00 0.00
AUG 7 54319 0.22967 0.30664 -0.168671 -33.168671 0.00 0.00
AUG 12 54324 0.22612 0.29217 -0.170292 -33.170292 0.00 0.00
AUG 17 54329 0.22273 0.27813 -0.172123 -33.172123 0.00 0.00
AUG 22 54334 0.21739 0.26308 -0.174206 -33.174206 0.00 0.00
AUG 27 54339 0.21271 0.25003 -0.176549 -33.176549 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 233 (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 2005
IERS Annual Report.
2007 MJD x y UT1-UTC UT1-UT1R D dX dY
(0 h UTC) " " s ms ms 0.001" 0.001"
MAY 4 54224 0.08506 0.48999 -0.111336 -0.421 0.903 0.28 -0.49
MAY 5 54225 0.08741 0.48929 -0.112167 0.040 0.764 0.31 -0.68
MAY 6 54226 0.08958 0.48835 -0.112894 0.585 0.650 0.32 -0.66
MAY 7 54227 0.09163 0.48736 -0.113536 1.134 0.641 0.32 -0.50
MAY 8 54228 0.09361 0.48661 -0.114223 1.598 0.786 0.31 -0.37
MAY 9 54229 0.09545 0.48590 -0.115137 1.885 1.046 0.29 -0.35
MAY 10 54230 0.09743 0.48507 -0.116324 1.917 1.347 0.27 -0.45
MAY 11 54231 0.09957 0.48448 -0.117825 1.654 1.658 0.24 -0.55
MAY 12 54232 0.10157 0.48394 -0.119660 1.115 2.010 0.19 -0.55
MAY 13 54233 0.10385 0.48326 -0.121820 0.391 2.227 0.13 -0.47
MAY 14 54234 0.10649 0.48251 -0.124043 -0.368 2.181 0.10 -0.38
MAY 15 54235 0.10942 0.48175 -0.126106 -0.990 1.940 0.10 -0.36
MAY 16 54236 0.11227 0.48094 -0.127853 -1.340 1.560 0.12 -0.45
MAY 17 54237 0.11484 0.48004 -0.129230 -1.363 1.216 0.14 -0.61
MAY 18 54238 0.11714 0.47913 -0.130319 -1.105 0.967 0.16 -0.72
MAY 19 54239 0.11914 0.47808 -0.131234 -0.683 0.856 0.15 -0.73
MAY 20 54240 0.12089 0.47694 -0.132108 -0.242 0.870 0.13 -0.64
MAY 21 54241 0.12246 0.47555 -0.133051 0.099 0.914 0.11 -0.50
MAY 22 54242 0.12434 0.47409 -0.133968 0.271 0.958 0.12 -0.38
MAY 23 54243 0.12666 0.47321 -0.134930 0.263 1.062 0.14 -0.30
MAY 24 54244 0.12901 0.47274 -0.136047 0.103 1.217 0.17 -0.27
MAY 25 54245 0.13139 0.47199 -0.137335 -0.159 1.302 0.17 -0.25
MAY 26 54246 0.13368 0.47112 -0.138644 -0.460 1.277 0.13 -0.25
MAY 27 54247 0.13550 0.47025 -0.139885 -0.737 1.190 0.07 -0.26
MAY 28 54248 0.13715 0.46899 -0.141026 -0.930 1.089 0.02 -0.29
MAY 29 54249 0.13882 0.46748 -0.142007 -0.989 0.931 0.03 -0.34
MAY 30 54250 0.14079 0.46576 -0.142828 -0.882 0.763 0.10 -0.40
MAY 31 54251 0.14340 0.46391 -0.143484 -0.604 0.577 0.22 -0.44
JUN 1 54252 0.14631 0.46218 -0.143943 -0.177 0.349 0.31 -0.45
JUN 2 54253 0.14914 0.46054 -0.144231 0.347 0.208 0.32 -0.43
JUN 3 54254 0.15155 0.45900 -0.144391 0.893 0.163 0.25 -0.40
JUN 4 54255 0.15384 0.45739 -0.144558 1.371 0.252 0.15 -0.40
JUN 5 54256 0.15638 0.45598 -0.144930 1.692 0.463 0.09 -0.42
JUN 6 54257 0.15873 0.45476 -0.145527 1.784 0.677 0.10 -0.45
JUN 7 54258 0.16059 0.45322 -0.146284 1.608 0.869 0.14 -0.43
JUN 8 54259 0.16239 0.45154 -0.147250 1.178 1.030 0.18 -0.37
JUN 9 54260 0.16443 0.45007 -0.148331 0.562 1.130 0.19 -0.31
JUN 10 54261 0.16672 0.44870 -0.149458 -0.122 1.141 0.16 -0.29
JUN 11 54262 0.16913 0.44726 -0.150532 -0.729 1.029 0.13 -0.35
JUN 12 54263 0.17133 0.44548 -0.151452 -1.127 0.764 0.10 -0.44
JUN 13 54264 0.17334 0.44332 -0.152081 -1.236 0.422 0.09 -0.51
JUN 14 54265 0.17504 0.44123 -0.152335 -1.062 0.147 0.09 -0.48
JUN 15 54266 0.17661 0.43918 -0.152400 -0.686 -0.025 0.06 -0.31
JUN 16 54267 0.17836 0.43719 -0.152315 -0.242 -0.023 0.00 0.00
JUN 17 54268 0.18030 0.43536 -0.152315 0.138 0.113 0.00 0.00
JUN 18 54269 0.18247 0.43365 -0.152508 0.358 0.269 0.00 0.00
JUN 19 54270 0.18476 0.43201 -0.152888 0.385 0.462 0.00 0.00
JUN 20 54271 0.18712 0.43068 -0.153440 0.238 0.643 0.00 0.00
JUN 21 54272 0.18938 0.42931 -0.154139 -0.032 0.739 0.00 0.00
IERS, B 233 (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"
MAY 4 54224 0.08504 0.48997 -0.111347 0.291 -.527 0.01 0.01 0.01 0.04 0.04
MAY 9 54229 0.09544 0.48588 -0.115134 0.297 -.329 0.01 0.01 0.01 0.04 0.03
MAY 14 54234 0.10649 0.48250 -0.124041 0.108 -.359 0.01 0.01 0.01 0.02 0.02
MAY 19 54239 0.11914 0.47805 -0.131242 -.041 -.542 0.01 0.01 0.02 0.10 0.07
MAY 24 54244 0.12898 0.47272 -0.136023 0.203 -.269 0.01 0.02 0.01 0.04 0.03
MAY 29 54249 0.13882 0.46745 -0.142001 0.028 -.332 0.01 0.01 0.02 0.05 0.04
JUN 3 54254 0.15154 0.45898 -0.144388 0.286 -.380 0.01 0.01 0.01 0.04 0.03
JUN 8 54259 0.16237 0.45154 -0.147245 0.177 -.360 0.01 0.01 0.02 0.09 0.09
JUN 13 54264 0.17332 0.44331 -0.152068 0.069 -.495 0.02 0.02 0.02 0.08 0.06
JUN 18 54269 0.18243 0.43361 -0.152508 - - 0.02 0.02 0.08 - -
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)
MAY 4 54224 0.00131 72.921 15036
MAY 9 54229 0.00122 15044
MAY 14 54234 0.00147 15023
MAY 19 54239 0.00132 15036
MAY 24 54244 0.00100 15062
MAY 29 54249 0.00096 15066
JUN 3 54254 0.00070 15088
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 233 (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 0.06 0.03 - - - 13
54224.27 to 54266.27 0.10 0.11 0.09 - - -
EOP(BKG) 3 R 4 0.07 0.06 0.03 - - - 13
54224.27 to 54266.27 0.08 0.17 0.11 - - -
EOP(BKG) 3 R 2 - - 0.09 - - - 44
54224.80 to 54271.80 - - 0.13 - - -
EOP(USNO) 5 R 1 - - 0.11 - - - 47
54224.80 to 54271.80 - - 0.14 - - -
EOP(GSFC) 6 R 1 - - 0.10 - - - 45
54224.80 to 54271.80 - - 0.11 - - -
EOP(IAA) 5 R 2 0.08 0.08 0.04 - 0.06 0.06 11
54224.27 to 54266.27 0.08 0.12 0.11 - 0.03 0.10
EOP(IAA) 5 R 1 - - 0.09 - - - 45
54224.80 to 54271.80 - - 0.12 - - -
EOP(SPBU) 3 R 3 0.29 0.36 0.17 - - - 1
54224.27 to 54224.27 0.03 0.55 0.06 - - -
EOP(SPBU) 2 R 1 - - 0.10 - - - 35
54224.80 to 54261.33 - - 0.13 - - -
EOP(MAO) 3 R 1 0.08 0.07 0.03 - 0.05 0.05 12
54224.28 to 54266.28 0.04 0.11 0.13 - 0.04 0.11
EOP(GSFC) 6 R 1 0.06 0.05 0.02 - - - 13
54224.27 to 54266.27 0.06 0.10 0.09 - - -
EOP(USNO) 6 R 2 0.06 0.05 0.02 - - - 13
54224.27 to 54266.27 0.09 0.10 0.09 - - -
EOP(IVS) 7 R 1 0.04 0.04 0.02 - - - 12
54224.27 to 54266.27 0.09 0.09 0.13 - - -
GPS
EOP(CODE) 98 P 1 0.01 0.01 - 0.06 - - 48
54224.50 to 54271.50 0.03 0.03 - 0.17 - -
EOP(EMR) 96 P 3 0.03 0.03 - 0.04 - - 48
54224.50 to 54271.50 0.05 0.08 - 0.15 - -
EOP(ESOC) 96 P 1 0.01 0.01 - 0.04 - - 48
54224.50 to 54271.50 0.05 0.06 - 0.35 - -
EOP(GFZ) 96 P 2 0.00 0.00 - 0.01 - - 45
54224.50 to 54268.50 0.03 0.04 - 0.11 - -
EOP(IAA) 1 P 1 0.03 0.03 - 0.06 - - 48
54224.50 to 54271.50 0.11 0.81 - 0.28 - -
EOP(JPL) 96 P 3 0.02 0.02 - 0.11 - - 44
54224.50 to 54267.50 0.05 0.04 - 0.28 - -
EOP(NOAA) 96 P 1 0.01 0.01 - 0.01 - - 47
54224.50 to 54270.50 0.08 0.07 - 0.20 - -
EOP(SIO) 96 P 1 0.03 0.04 - 0.10 - - 48
54224.50 to 54271.50 0.06 0.05 - 0.15 - -
EOP(IGS R)96 P 2 0.02 0.03 0.18 0.05 - - 48
54224.50 to 54271.50 0.04 0.04 0.55 0.08 - -
EOP(IGS) 0 P 3 0.02 0.02 0.11 0.08 - - 44
54224.50 to 54267.50 0.01 0.02 0.24 0.13 - -
EOP(IERS) 97 P 1 0.03 0.03 0.14 0.09 - - 48
54224.50 to 54271.50 0.03 0.04 0.24 0.11 - -
SLR
EOP(ASI) 3 L 2 0.07 0.07 - 0.16 - - 48
54224.50 to 54271.50 0.19 0.40 - 0.46 - -
EOP(IAA) 2 L 1 0.03 0.04 0.02 0.02 - - 49
54224.00 to 54272.00 0.27 0.15 1.36 0.73 - -
EOP(MCC) 97 L 1 0.14 0.15 - 0.10 - - 42
54224.00 to 54272.00 0.16 0.12 - 2.27 - -
EOP(ILRS) 5 L 1 0.06 0.06 - 0.14 - - 48
54224.50 to 54271.50 0.17 0.15 - 0.49 - -
Bulletin A
EOP(NEOS) 97 C 1 0.06 0.05 0.07 - - - 49
54224.00 to 54272.00 0.05 0.04 0.10 - - -