BULLETIN B 239 (IAU 2000) 7 january 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 2007/2008 " " s s 0.001" 0.001" (0h UTC) Final Bulletin B values. NOV 5 54409 0.03593 0.19258 -0.216363 -33.216363 0.01 -0.15 NOV 10 54414 0.02530 0.19346 -0.220665 -33.220665 0.01 -0.15 NOV 15 54419 0.01111 0.19549 -0.225243 -33.225243 0.04 0.06 NOV 20 54424 -0.00423 0.19944 -0.230923 -33.230923 -0.02 -0.11 NOV 25 54429 -0.01814 0.20487 -0.237795 -33.237795 -0.08 0.12 NOV 30 54434 -0.02865 0.20954 -0.244205 -33.244205 0.16 0.10 DEC 5 54439 -0.03673 0.21721 -0.250380 -33.250380 -0.03 0.02 Preliminary extension, to be updated weekly in Bulletin A and monthly in Bulletin B. DEC 10 54444 -0.04767 0.22401 -0.254834 -33.254834 0.10 0.06 DEC 15 54449 -0.05466 0.23029 -0.258377 -33.258377 0.02 -0.04 DEC 20 54454 -0.06100 0.23773 -0.262023 -33.262023 0.02 -0.04 DEC 25 54459 -0.06731 0.24613 -0.266348 -33.266348 0.00 0.00 DEC 30 54464 -0.07646 0.25477 -0.270416 -33.270416 0.00 0.00 JAN 4 54469 -0.08450 0.26334 -0.274846 -33.274846 0.00 0.00 JAN 9 54474 -0.09230 0.27464 -0.280103 -33.280103 0.00 0.00 JAN 14 54479 -0.10140 0.28594 -0.285701 -33.285701 0.00 0.00 JAN 19 54484 -0.10809 0.29820 -0.291320 -33.291320 0.00 0.00 JAN 24 54489 -0.11257 0.31135 -0.296880 -33.296880 0.00 0.00 JAN 29 54494 -0.11719 0.32551 -0.302459 -33.302459 0.00 0.00 FEB 3 54499 -0.11932 0.33849 -0.308082 -33.308082 0.00 0.00 FEB 8 54504 -0.12010 0.35283 -0.313775 -33.313775 0.00 0.00 FEB 13 54509 -0.11912 0.36718 -0.319616 -33.319616 0.00 0.00 FEB 18 54514 -0.11925 0.38051 -0.325591 -33.325591 0.00 0.00 FEB 23 54519 -0.11781 0.39429 -0.331714 -33.331714 0.00 0.00 FEB 28 54524 -0.11821 0.40857 -0.338010 -33.338010 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 239 (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" NOV 5 54409 0.03593 0.19258 -0.216755 -0.392 1.020 0.01 -0.15 NOV 6 54410 0.03401 0.19279 -0.217788 -0.707 1.039 -0.03 -0.19 NOV 7 54411 0.03231 0.19309 -0.218854 -0.969 1.057 0.00 -0.18 NOV 8 54412 0.03022 0.19327 -0.219912 -1.121 0.998 0.05 -0.16 NOV 9 54413 0.02782 0.19344 -0.220843 -1.117 0.849 0.06 -0.14 NOV 10 54414 0.02530 0.19346 -0.221602 -0.937 0.643 0.01 -0.15 NOV 11 54415 0.02278 0.19356 -0.222172 -0.589 0.489 -0.06 -0.17 NOV 12 54416 0.01999 0.19418 -0.222599 -0.107 0.367 -0.10 -0.15 NOV 13 54417 0.01696 0.19472 -0.222902 0.451 0.327 -0.09 -0.08 NOV 14 54418 0.01406 0.19495 -0.223272 1.015 0.391 -0.03 0.01 NOV 15 54419 0.01111 0.19549 -0.223740 1.504 0.588 0.04 0.06 NOV 16 54420 0.00791 0.19613 -0.224440 1.840 0.869 0.09 0.03 NOV 17 54421 0.00458 0.19644 -0.225435 1.959 1.129 0.10 -0.07 NOV 18 54422 0.00138 0.19703 -0.226682 1.817 1.407 0.08 -0.14 NOV 19 54423 -0.00153 0.19814 -0.228282 1.415 1.702 0.02 -0.19 NOV 20 54424 -0.00423 0.19944 -0.230115 0.808 1.925 -0.02 -0.11 NOV 21 54425 -0.00694 0.20079 -0.232097 0.109 1.992 -0.04 0.06 NOV 22 54426 -0.00945 0.20231 -0.234116 -0.532 1.921 -0.05 0.23 NOV 23 54427 -0.01189 0.20377 -0.235985 -0.969 1.722 -0.08 0.29 NOV 24 54428 -0.01484 0.20453 -0.237545 -1.113 1.418 -0.10 0.23 NOV 25 54429 -0.01814 0.20487 -0.238762 -0.967 1.110 -0.08 0.12 NOV 26 54430 -0.02084 0.20517 -0.239768 -0.623 0.931 -0.02 0.00 NOV 27 54431 -0.02298 0.20587 -0.240689 -0.225 0.913 0.06 -0.07 NOV 28 54432 -0.02526 0.20697 -0.241619 0.085 1.030 0.10 -0.07 NOV 29 54433 -0.02729 0.20817 -0.242708 0.219 1.220 0.15 0.03 NOV 30 54434 -0.02865 0.20954 -0.244050 0.155 1.409 0.16 0.10 DEC 1 54435 -0.02959 0.21110 -0.245569 -0.072 1.538 0.13 0.08 DEC 2 54436 -0.03067 0.21265 -0.247102 -0.394 1.599 0.09 0.03 DEC 3 54437 -0.03202 0.21422 -0.248735 -0.737 1.578 0.04 -0.13 DEC 4 54438 -0.03401 0.21583 -0.250249 -1.031 1.432 -0.01 -0.07 DEC 5 54439 -0.03673 0.21721 -0.251598 -1.218 1.210 -0.03 0.02 IERS, B 239 (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" NOV 5 54409 0.03595 0.19260 -0.216756 -.004 -.159 0.02 0.02 0.02 0.03 0.04 NOV 10 54414 0.02530 0.19348 -0.221604 -.018 0.021 0.01 0.01 0.02 0.06 0.09 NOV 15 54419 0.01114 0.19547 -0.223744 0.061 0.080 0.02 0.02 0.02 0.09 0.10 NOV 20 54424 -0.00423 0.19944 -0.230110 -.051 -.119 0.02 0.02 0.02 0.09 0.09 NOV 25 54429 -0.01814 0.20489 -0.238761 -.046 0.180 0.02 0.02 0.01 0.03 0.05 NOV 30 54434 -0.02864 0.20958 -0.244048 0.401 -.097 0.02 0.02 0.03 0.13 0.19 DEC 5 54439 -0.03674 0.21726 -0.251599 -.013 -.015 0.02 0.02 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 MJD s (microrad/s) NOV 5 54409 0.00071 72.921 15087 NOV 10 54414 0.00092 15069 NOV 15 54419 0.00102 15061 NOV 20 54424 0.00125 15041 NOV 25 54429 0.00138 15030 NOV 30 54434 0.00126 15040 DEC 5 54439 0.00110 15054 5 - INFORMATION ON TIME SCALES No leap second was 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 on our web/ftp site : World Wide Web : http://hpiers.obspm.fr Anonymous ftp : hpiers.obspm.fr or 145.238.100.28 IERS, B 239 (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 0.07 0.02 - - - 9 54410.21 to 54438.21 0.49 0.24 0.13 - - - EOP(BKG) 3 R 4 0.06 0.06 0.02 - - - 9 54410.21 to 54438.21 0.09 0.08 0.10 - - - EOP(BKG) 3 R 2 - - 0.10 - - - 30 54409.31 to 54438.79 - - 0.11 - - - EOP(USNO) 5 R 1 - - 0.07 - - - 27 54409.31 to 54438.79 - - 0.10 - - - EOP(GSFC) 6 R 1 - - 0.08 - - - 28 54409.31 to 54438.79 - - 0.10 - - - EOP(IAA) 5 R 2 0.06 0.06 0.02 - 0.04 0.05 9 54410.21 to 54438.21 0.08 0.07 0.05 - 0.04 0.04 EOP(IAA) 5 R 1 - - 0.09 - - - 17 54417.79 to 54438.79 - - 0.13 - - - EOP(MAO) 3 R 1 0.11 0.10 0.03 - 0.07 0.07 9 54410.23 to 54438.21 0.05 0.07 0.05 - 0.07 0.04 EOP(GSFC) 6 R 1 0.06 0.06 0.02 - - - 9 54410.21 to 54438.21 0.22 0.40 0.07 - - - EOP(USNO) 6 R 2 0.06 0.06 0.02 - - - 9 54410.21 to 54438.21 0.08 0.06 0.08 - - - EOP(IVS) 2 R 1 0.05 0.05 0.02 - - - 7 54410.21 to 54438.21 0.08 0.12 0.06 - - - GPS EOP(CODE) 98 P 1 0.01 0.01 - 0.06 - - 30 54409.50 to 54438.50 0.02 0.05 - 0.13 - - EOP(EMR) 96 P 3 0.03 0.03 - 0.04 - - 30 54409.50 to 54438.50 0.05 0.06 - 0.10 - - EOP(ESOC) 96 P 1 0.01 0.01 - 0.04 - - 30 54409.50 to 54438.50 0.06 0.05 - 0.31 - - EOP(IAA) 1 P 1 0.03 0.03 - 0.06 - - 30 54409.50 to 54438.50 0.11 0.29 - 0.39 - - EOP(JPL) 96 P 3 0.01 0.01 - 0.06 - - 30 54409.50 to 54438.50 0.08 0.16 - 3.73 - - EOP(NOAA) 96 P 1 0.00 0.00 - 0.00 - - 30 54409.50 to 54438.50 0.06 0.05 - 0.17 - - EOP(SIO) 96 P 1 0.02 0.02 - 0.05 - - 30 54409.50 to 54438.50 0.04 0.05 - 0.15 - - EOP(IGS R)96 P 2 0.02 0.03 0.13 0.05 - - 30 54409.50 to 54438.50 0.03 0.04 0.43 0.08 - - EOP(IGS) 7 P 1 0.02 0.02 0.08 0.07 - - 30 54409.50 to 54438.50 0.02 0.02 0.35 0.09 - - SLR EOP(ASI) 3 L 2 0.09 0.09 - 0.26 - - 30 54409.50 to 54438.50 0.39 0.28 - 0.55 - - EOP(ILRS) 5 L 1 0.06 0.06 - 0.15 - - 30 54409.50 to 54438.50 0.27 0.28 - 0.44 - - EOP(IAA) 2 L 1 0.05 0.05 0.03 0.03 - - 31 54409.00 to 54439.00 0.18 0.29 0.46 0.25 - - EOP(MCC) 97 L 1 0.18 0.18 - 0.28 - - 27 54413.00 to 54439.00 0.14 0.17 - 2.16 - - Bulletin A EOP(NEOS) 97 C 1 0.04 0.04 0.04 - - - 31 54409.00 to 54439.00 0.05 0.08 0.21 - - -