BULLETIN B 196
(IAU 2000)
1 June 2004
==============================================================================
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 until
December 2004.
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
2004 " " s s 0.001" 0.001"
(0h UTC)
Final Bulletin B values.
APR 4 53099 -.14085 .32862 -.437859 -32.437859 .07 -.10
APR 9 53104 -.13972 .34246 -.442473 -32.442473 -.02 .09
APR 14 53109 -.13902 .35797 -.446364 -32.446364 .07 .06
APR 19 53114 -.13342 .37369 -.449754 -32.449754 .14 .14
APR 24 53119 -.13268 .38724 -.452263 -32.452263 .24 -.07
APR 29 53124 -.12500 .39791 -.454042 -32.454042 .02 .07
MAY 4 53129 -.11706 .41347 -.456294 -32.456294 .07 -.03
Preliminary extension, to be updated weekly in Bulletin A and monthly
in Bulletin B.
MAY 9 53134 -.11108 .42617 -.459864 -32.459864 -.09 -.14
MAY 14 53139 -.10224 .43998 -.463001 -32.463001 .13 .03
MAY 19 53144 -.09882 .44817 -.466493 -32.466493 .05 -.12
MAY 24 53149 -.09312 .45494 -.469431 -32.469431 .00 .00
MAY 29 53154 -.08848 .46301 -.470395 -32.470395 .00 .00
JUN 3 53159 -.08069 .47025 -.470432 -32.470432 .00 .00
JUN 8 53164 -.07057 .47826 -.470615 -32.470615 .00 .00
JUN 13 53169 -.05866 .48560 -.470402 -32.470402 .00 .00
JUN 18 53174 -.04564 .49211 -.469776 -32.469776 .00 .00
JUN 23 53179 -.03195 .49766 -.468769 -32.468769 .00 .00
JUN 28 53184 -.01780 .50221 -.467503 -32.467503 .00 .00
JUL 3 53189 -.00334 .50573 -.466007 -32.466007 .00 .00
JUL 8 53194 .01132 .50820 -.464367 -32.464367 .00 .00
JUL 13 53199 .02610 .50960 -.462627 -32.462627 .00 .00
JUL 18 53204 .04090 .50993 -.460834 -32.460834 .00 .00
JUL 23 53209 .05560 .50920 -.459034 -32.459034 .00 .00
JUL 28 53214 .07016 .50740 -.457310 -32.457310 .00 .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 196 (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 2002
IERS Annual Report.
2004 MJD x y UT1-UTC UT1-UT1R D dX dY
(0 h UTC) " " s ms ms 0.001" 0.001"
APR 4 53099 -.14085 .32862 -.436824 1.035 1.423 .07 -.10
APR 5 53100 -.14111 .33094 -.438352 .417 1.562 -.15 -.06
APR 6 53101 -.14072 .33327 -.439962 -.226 1.557 -.21 -.15
APR 7 53102 -.14007 .33614 -.441421 -.750 1.346 -.09 -.25
APR 8 53103 -.13987 .33930 -.442625 -1.041 1.052 -.01 -.10
APR 9 53104 -.13972 .34246 -.443523 -1.050 .771 -.02 .09
APR 10 53105 -.13916 .34573 -.444191 -.812 .563 -.07 .15
APR 11 53106 -.13870 .34912 -.444689 -.424 .389 -.10 .12
APR 12 53107 -.13882 .35232 -.445012 -.015 .314 -.05 .07
APR 13 53108 -.13905 .35518 -.445352 .297 .452 .04 .06
APR 14 53109 -.13902 .35797 -.445934 .430 .702 .07 .06
APR 15 53110 -.13850 .36075 -.446757 .356 .887 .05 .10
APR 16 53111 -.13728 .36366 -.447692 .100 1.002 .04 .15
APR 17 53112 -.13588 .36700 -.448734 -.274 1.078 .06 .18
APR 18 53113 -.13463 .37040 -.449817 -.679 1.037 .11 .16
APR 19 53114 -.13342 .37369 -.450779 -1.025 .879 .14 .14
APR 20 53115 -.13272 .37720 -.451553 -1.239 .688 .15 .20
APR 21 53116 -.13286 .38027 -.452144 -1.273 .480 .17 .29
APR 22 53117 -.13303 .38274 -.452513 -1.111 .237 .20 .29
APR 23 53118 -.13290 .38514 -.452629 -.769 .010 .24 .14
APR 24 53119 -.13268 .38724 -.452550 -.287 -.141 .24 -.07
APR 25 53120 -.13200 .38900 -.452370 .272 -.218 .22 -.16
APR 26 53121 -.13046 .39082 -.452140 .836 -.212 .18 -.09
APR 27 53122 -.12846 .39281 -.451970 1.329 -.090 .11 .04
APR 28 53123 -.12664 .39512 -.451983 1.682 .111 .02 .08
APR 29 53124 -.12500 .39791 -.452211 1.832 .340 .02 .07
APR 30 53125 -.12334 .40104 -.452673 1.738 .623 .14 .15
MAY 1 53126 -.12138 .40421 -.453452 1.395 .902 .28 .37
MAY 2 53127 -.11966 .40736 -.454452 .846 1.080 .29 .47
MAY 3 53128 -.11839 .41045 -.455570 .196 1.154 .16 .29
MAY 4 53129 -.11706 .41347 -.456709 -.415 1.120 .07 -.03
MAY 5 53130 -.11581 .41638 -.457768 -.843 .956 .11 -.21
MAY 6 53131 -.11493 .41910 -.458603 -1.000 .728 .17 -.16
MAY 7 53132 -.11391 .42156 -.459237 -.879 .528 .12 -.07
MAY 8 53133 -.11250 .42387 -.459698 -.559 .375 -.01 -.08
MAY 9 53134 -.11108 .42617 -.460035 -.171 .323 -.09 -.14
MAY 10 53135 -.10962 .42873 -.460386 .148 .410 -.03 -.15
MAY 11 53136 -.10793 .43162 -.460879 .303 .586 .12 -.10
MAY 12 53137 -.10600 .43446 -.461561 .255 .747 .23 -.07
MAY 13 53138 -.10391 .43722 -.462359 .026 .895 .23 -.04
MAY 14 53139 -.10224 .43998 -.463327 -.326 1.025 .13 .03
MAY 15 53140 -.10121 .44230 -.464380 -.718 1.072 .04 .13
MAY 16 53141 -.10060 .44406 -.465443 -1.069 1.010 .00 .13
MAY 17 53142 -.10010 .44556 -.466380 -1.306 .861 .01 .04
MAY 18 53143 -.09966 .44683 -.467153 -1.379 .689 .04 -.03
MAY 19 53144 -.09882 .44817 -.467755 -1.263 .504 .05 -.12
MAY 20 53145 -.09769 .44948 -.468168 -.962 .298 .11 -.15
MAY 21 53146 -.09620 .45102 -.468366 -.509 .119 .00 .00
MAY 22 53147 -.09516 .45227 -.468427 .040 -.008 .00 .00
MAY 23 53148 -.09417 .45349 -.468375 .616 -.083 .00 .00
MAY 24 53149 -.09312 .45494 -.468286 1.145 -.062 .00 .00
MAY 25 53150 -.09188 .45660 -.468272 1.557 .027 .00 .00
MAY 26 53151 -.09076 .45832 -.468312 1.794 .134 .00 .00
MAY 27 53152 -.09018 .45981 -.468468 1.816 .263 .00 .00
IERS, B 196 (3)
3 - NORMAL VALUES OF THE EARTH ORIENTATION PARAMETERS AT FIVE-DAY INTERVALS
(IERS evaluation).
Raw normal values Uncertainties
2004 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 4 53099 -.14085 .32861 -.436828 -.031 -.013 .02 .02 .02 .02 .03
APR 9 53104 -.13973 .34246 -.443524 -.032 .099 .01 .02 .02 .02 .03
APR 14 53109 -.13904 .35797 -.445932 .069 .070 .01 .01 .02 .02 .02
APR 19 53114 -.13341 .37369 -.450779 .186 .173 .02 .02 .02 .03 .03
APR 24 53119 -.13269 .38724 -.452551 .224 -.067 .01 .01 .02 .02 .03
APR 29 53124 -.12500 .39791 -.452210 .001 .048 .02 .01 .02 .02 .03
MAY 4 53129 -.11706 .41347 -.456710 .073 .018 .02 .02 .02 .02 .02
MAY 9 53134 -.11108 .42617 -.460035 -.082 -.122 .01 .01 .02 .01 .01
MAY 14 53139 -.10225 .43998 -.463327 .174 -.028 .01 .02 .02 .04 .05
MAY 19 53144 -.09882 .44817 -.467755 .059 -.104 .02 .02 .02 .02 .02
MAY 24 53149 -.09312 .45494 -.468289 - - .03 .04 .06 - -
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
2004 MJD s (microrad/s)
APR 4 53099 .00087 72.921 15073
APR 9 53104 .00090 15071
APR 14 53109 .00074 15084
APR 19 53114 .00059 15097
APR 24 53119 .00040 15113
APR 29 53124 .00038 15115
MAY 4 53129 .00058 15097
5 - INFORMATION ON TIME SCALES
No leap second was introduced in UTC on 31 December 2003.
No leap second will be introduced in UTC on 30 June 2004.
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 196 (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 01 .31 .35 .19 - - - 14
53101.21 to 53145.27 .09 .24 .10 - - -
EOP(BKG) 3 R 04 .11 .09 .04 - - - 13
53101.21 to 53143.21 .25 .11 .07 - - -
EOP(BKG) 3 R 02 - - .12 - - - 37
53100.79 to 53150.79 - - .15 - - -
EOP(GSFC) 4 R 02 .07 .07 .03 - - - 15
53101.21 to 53145.27 .13 .06 .04 - - -
EOP(GSFC) 4 R 01 - - .14 - - - 36
53100.79 to 53150.79 - - .14 - - -
EOP(IAA) 3 R 04 .06 .06 .03 - .11 .04 14
53101.21 to 53145.27 .12 .08 .06 - .14 .04
EOP(IAA) 3 R 03 - - .11 - - - 36
53100.79 to 53150.79 - - .14 - - -
EOP(SPBU) 3 R 03 .32 .36 .19 - - - 4
53108.20 to 53118.27 .22 .35 .10 - - -
EOP(SPBU) 2 R 01 - - .13 - - - 31
53100.79 to 53137.79 - - .12 - - -
EOP(MAO) 3 R 01 .10 .10 .05 - .16 .06 15
53101.20 to 53145.30 .12 .05 .10 - .19 .09
EOP(USNO) 3 R 04 .07 .07 .03 - - - 12
53101.21 to 53139.27 .12 .06 .07 - - -
EOP(IVS) 0 R 01 .06 .06 .02 - - - 12
53101.00 to 53139.00 .27 .05 .06 - - -
GPS
EOP(CODE) 98 P 01 .01 .01 - .26 - - 53
53099.50 to 53151.50 .06 .07 - .18 - -
EOP(EMR) 96 P 03 .03 .03 - .04 - - 53
53099.50 to 53151.50 .06 .10 - .57 - -
EOP(ESOC) 96 P 01 .02 .02 - .03 - - 53
53099.50 to 53151.50 .20 .08 - .32 - -
EOP(GFZ) 96 P 02 .01 .01 - .01 - - 53
53099.50 to 53151.50 .11 .06 - .33 - -
EOP(IAA) 1 P 01 .03 .03 - .06 - - 53
53099.50 to 53151.50 .14 .19 - .57 - -
EOP(JPL) 96 P 03 .03 .03 - .13 - - 53
53099.50 to 53151.50 .05 .06 - .52 - -
EOP(NOAA) 96 P 01 .01 .01 - .02 - - 45
53099.50 to 53143.50 .19 .27 - .51 - -
EOP(SIO) 96 P 01 .05 .05 - .11 - - 53
53099.50 to 53151.50 .06 .06 - .41 - -
EOP(IGS F)95 P 02 .02 .03 .08 .04 - - 42
53099.50 to 53140.50 .05 .04 .27 .17 - -
EOP(IGS R)96 P 02 .03 .03 .18 .07 - - 53
53099.50 to 53151.50 .09 .04 .83 .22 - -
EOP(IERS) 97 P 01 .03 .04 .18 .12 - - 53
53099.50 to 53151.50 .02 .01 .41 .15 - -
SLR
EOP(ASI) 3 L 02 .07 .08 - .19 - - 52
53099.50 to 53150.50 .26 .20 - .95 - -
EOP(CSR) 95 L 01 .28 .32 .26 - - - 15
53100.39 to 53142.10 .32 .53 1.02 - - -
EOP(IAA) 2 L 01 .04 .05 .03 .03 - - 54
53099.00 to 53152.00 .17 .13 .28 .15 - -
EOP(MCC) 97 L 01 .05 .07 - .10 - - 47
53099.00 to 53145.00 .16 .12 - .98 - -
Bulletin A
EOP(NEOS) 97 C 01 .05 .05 .09 - - - 54
53099.00 to 53152.00 .08 .05 .26 - - -