                                                                BULLETIN B 278
                                        			1 April 2011   
    
 Contents are described in ftp://hpiers.obspm.fr/iers/bul/bulb_new/bulletinb.pdf 
	
 1 - DAILY FINAL VALUES OF x, y, UT1-UTC, dX, dY
 Angular unit is milliarcsecond (mas), time unit is millisecond (ms). 
 Upgraded solution from February 1 2011 - consistent with ITRF 2008.
 
       DATE     MJD       x       y      UT1-UTC      dX     dY     x err    y err   UT1 err  X err  Y err
    (0 h UTC)            mas     mas       ms         mas    mas     mas      mas      ms     mas     mas

 Final values 

 Mean formal error      0.049    0.052    0.0064    0.032  0.069 
 
2011   2   2   55594   43.668  201.441 -157.0526    0.130 -0.264    0.049    0.055    0.0053  0.018  0.044
2011   2   3   55595   42.794  202.288 -157.6721    0.096 -0.178    0.050    0.057    0.0087  0.022  0.055
2011   2   4   55596   41.554  202.570 -158.4166    0.067 -0.089    0.049    0.056    0.0023  0.026  0.066
2011   2   5   55597   40.212  202.929 -159.2173    0.079 -0.054    0.049    0.056    0.0066  0.026  0.066
2011   2   6   55598   39.066  203.372 -160.0001    0.108 -0.044    0.048    0.052    0.0091  0.025  0.063
2011   2   7   55599   38.209  204.348 -160.7536    0.129 -0.025    0.046    0.050    0.0059  0.023  0.059
2011   2   8   55600   37.496  205.723 -161.4609    0.164 -0.037    0.045    0.051    0.0014  0.022  0.055
2011   2   9   55601   36.192  207.298 -162.0813    0.169 -0.080    0.045    0.049    0.0036  0.027  0.068
2011   2  10   55602   34.283  208.594 -162.6230    0.168 -0.141    0.045    0.048    0.0058  0.034  0.085
2011   2  11   55603   32.105  209.586 -163.0933    0.164 -0.210    0.047    0.051    0.0018  0.041  0.102
2011   2  12   55604   30.701  210.469 -163.4644    0.190 -0.293    0.048    0.051    0.0073  0.041  0.103
2011   2  13   55605   29.391  211.592 -163.8058    0.223 -0.372    0.049    0.054    0.0130  0.039  0.099
2011   2  14   55606   27.774  212.363 -164.1841    0.245 -0.415    0.049    0.055    0.0100  0.037  0.093
2011   2  15   55607   26.124  213.146 -164.6670    0.259 -0.466    0.050    0.054    0.0023  0.035  0.089
2011   2  16   55608   24.928  214.441 -165.3702    0.227 -0.470    0.049    0.045    0.0096  0.034  0.085
2011   2  17   55609   23.412  216.275 -166.3794    0.177 -0.450    0.049    0.045    0.0112  0.032  0.081
2011   2  18   55610   21.794  217.849 -167.6724    0.120 -0.415    0.049    0.053    0.0029  0.031  0.078
2011   2  19   55611   20.044  218.902 -169.1337    0.082 -0.408    0.050    0.054    0.0070  0.028  0.070
2011   2  20   55612   18.553  220.015 -170.7531    0.052 -0.404    0.051    0.056    0.0107  0.024  0.061
2011   2  21   55613   16.793  220.739 -172.3867    0.023 -0.379    0.052    0.057    0.0072  0.021  0.052
2011   2  22   55614   15.230  221.266 -173.8320    0.003 -0.360    0.050    0.040    0.0017  0.017  0.043
2011   2  23   55615   13.783  222.006 -174.9881   -0.034 -0.286    0.053    0.041    0.0067  0.019  0.049
2011   2  24   55616   12.281  222.902 -175.8488   -0.068 -0.201    0.054    0.056    0.0108  0.023  0.058
2011   2  25   55617   10.156  223.992 -176.4760   -0.093 -0.125    0.054    0.057    0.0030  0.027  0.068
2011   2  26   55618    7.633  224.724 -176.9533   -0.045 -0.133    0.055    0.059    0.0069  0.027  0.068
2011   2  27   55619    4.956  225.699 -177.3739    0.029 -0.181    0.053    0.057    0.0098  0.025  0.064
2011   2  28   55620    2.609  226.912 -177.8564    0.102 -0.235    0.046    0.051    0.0061  0.024  0.060
2011   3   1   55621    0.836  228.251 -178.4597    0.171 -0.297    0.046    0.050    0.0015  0.022  0.056

 Preliminary extension 
2011   3   2   55622   -0.704  229.376 -179.1860    0.120 -0.258    0.048    0.052    0.0048  0.029  0.072
2011   3   3   55623   -1.818  230.519 -180.0841    0.035 -0.197    0.048    0.052    0.0077  0.036  0.091
2011   3   4   55624   -2.620  231.967 -181.1598   -0.050 -0.141    0.049    0.053    0.0025  0.043  0.109
2011   3   5   55625   -3.077  233.518 -182.3075   -0.052 -0.168    0.049    0.053    0.0059  0.039  0.099
2011   3   6   55626   -3.417  235.516 -183.5123   -0.019 -0.230    0.050    0.053    0.0100  0.031  0.079
2011   3   7   55627   -4.509  237.522 -184.6848    0.017 -0.291    0.050    0.055    0.0074  0.023  0.059
2011   3   8   55628   -5.794  238.951 -185.7512    0.052 -0.350    0.050    0.055    0.0015  0.016  0.039
2011   3   9   55629   -6.966  240.539 -186.7311    0.097 -0.372    0.050    0.054    0.0089  0.018  0.046
2011   3  10   55630   -7.835  242.318 -187.6379    0.137 -0.375    0.051    0.056    0.0105  0.024  0.060
2011   3  11   55631   -8.888  244.278 -188.4270    0.167 -0.364    0.051    0.055    0.0029  0.029  0.074
2011   3  12   55632  -10.354  246.228 -189.0391    0.110 -0.332    0.051    0.055    0.0065  0.033  0.083
2011   3  13   55633  -11.743  248.013 -189.6002    0.018 -0.284    0.049    0.053    0.0098  0.036  0.091
2011   3  14   55634  -13.518  249.697 -190.2503   -0.075 -0.229    0.046    0.049    0.0084  0.039  0.098
2011   3  15   55635  -15.263  250.616 -191.0339   -0.163 -0.169    0.046    0.048    0.0065  0.042  0.106
2011   3  16   55636  -16.825  251.699 -191.9998   -0.242 -0.110    0.047    0.050    0.0020  0.045  0.114
2011   3  17   55637  -18.335  253.085 -193.2148   -0.170 -0.158    0.047    0.050    0.0079  0.036  0.091
2011   3  18   55638  -19.564  254.446 -194.6489   -0.052 -0.242    0.046    0.047    0.0144  0.024  0.061
2011   3  19   55639  -20.657  256.011 -196.2126   -0.005  0.019    0.046    0.049    0.0150  0.032  0.080
2011   3  20   55640  -21.667  257.726 -197.8139   -0.005  0.019    0.174    0.133    0.0255  0.035  0.089
2011   3  21   55641  -22.715  259.755 -199.3405   -0.005  0.020    0.233    0.168    0.0233  0.035  0.089
2011   3  22   55642  -24.366  261.785 -200.6907   -0.005  0.019    0.215    0.119    0.0158  0.035  0.089
2011   3  23   55643  -25.665  263.416 -201.8398   -0.005  0.019    0.233    0.153    0.0131  0.035  0.089
2011   3  24   55644  -26.784  265.303 -202.7622   -0.005  0.019    0.197    0.131    0.0151  0.035  0.089
2011   3  25   55645  -27.171  266.994 -203.5300   -0.005  0.019    0.240    0.112    0.0208  0.035  0.089
2011   3  26   55646  -27.430  268.938 -204.4251   -0.005  0.019    0.312    0.119    0.0158  0.035  0.089
2011   3  27   55647  -28.355  270.771 -205.1549   -0.005  0.019    0.267    0.121    0.0365  0.035  0.089
2011   3  28   55648  -29.308  272.613 -206.2052   -0.005  0.020    0.240    0.134    0.0266  0.035  0.089
2011   3  29   55649  -30.244  274.298 -207.5346   -0.005  0.019    0.287    0.116    0.0085  0.035  0.089
2011   3  30   55650  -30.875  275.753 -208.8492   -0.005  0.019    0.309    0.147    0.0485  0.035  0.089
2011   3  31   55651  -31.635  277.497 -210.1580   -0.005  0.020    0.377    0.179    0.0485  0.035  0.089
2011   4   1   55652  -32.099  279.323 -211.5761    0.001  0.002 1000.000 1000.000 1000.0000 397.800 1000.000
 
	
 2 - DAILY FINAL VALUES OF CELESTIAL POLE OFFSETS dPsi1980 & dEps1980
  dPsi1980   dEps1980 ....dPsi,dEps / IAU 1980 precession-nutation model      
 Description : ftp://hpiers.obspm.fr/iers/bul/bulb_new/bulletinb.pdf
 The Reference Systems are described in the 2006 IERS Annual Report.
 
       DATE     MJD    dPsi1980   dEps1980  sig dPsi  sig dEps   
    (0 h UTC)             mas        mas      mas       mas   

2011   2   2   55594   -67.067    -7.038     0.050     0.044
2011   2   3   55595   -67.020    -6.765     0.059     0.055
2011   2   4   55596   -67.015    -6.525     0.068     0.066
2011   2   5   55597   -66.953    -6.483     0.068     0.066
2011   2   6   55598   -66.936    -6.612     0.064     0.063
2011   2   7   55599   -67.006    -6.763     0.060     0.059
2011   2   8   55600   -66.980    -6.882     0.056     0.055
2011   2   9   55601   -66.893    -7.010     0.072     0.068
2011   2  10   55602   -66.815    -7.244     0.093     0.085
2011   2  11   55603   -66.923    -7.569     0.113     0.102
2011   2  12   55604   -67.150    -7.826     0.116     0.103
2011   2  13   55605   -67.405    -7.878     0.113     0.099
2011   2  14   55606   -67.602    -7.826     0.118     0.093
2011   2  15   55607   -67.653    -7.978     0.115     0.089
2011   2  16   55608   -67.527    -8.307     0.106     0.085
2011   2  17   55609   -67.108    -8.510     0.094     0.081
2011   2  18   55610   -66.629    -8.299     0.082     0.078
2011   2  19   55611   -66.422    -7.843     0.074     0.070
2011   2  20   55612   -66.615    -7.517     0.067     0.061
2011   2  21   55613   -66.981    -7.501     0.061     0.052
2011   2  22   55614   -67.249    -7.692     0.054     0.043
2011   2  23   55615   -67.442    -7.862     0.061     0.049
2011   2  24   55616   -67.534    -8.040     0.072     0.058
2011   2  25   55617   -67.551    -8.265     0.084     0.068
2011   2  26   55618   -67.437    -8.531     0.085     0.068
2011   2  27   55619   -67.374    -8.703     0.082     0.064
2011   2  28   55620   -67.343    -8.766     0.079     0.060
2011   3   1   55621   -67.193    -8.798     0.076     0.056

 
 3 - EARTH ANGULAR VELOCITY : DAILY FINAL VALUES OF LOD, OMEGA AT 0hUTC
 
 LOD     : Excess of the Length of day - 86400 s TAI 
 OMEGA   : Earth angular velocity  
 Description: ftp://hpiers.obspm.fr/iers/bul/bulb_new/bulletinb.pdf
 
    DATE        MJD     LOD     sigma      OMEGA           sigma        
 (0 h UTC)              ms       ms        mas/ms          mas/ms

2011   2   2   55594  0.5634  0.0111  15.04106708059    0.00000000193 
2011   2   3   55595  0.6849  0.0111  15.04106705944    0.00000000193 
2011   2   4   55596  0.7776  0.0112  15.04106704330    0.00000000195 
2011   2   5   55597  0.8028  0.0113  15.04106703891    0.00000000197 
2011   2   6   55598  0.7722  0.0111  15.04106704424    0.00000000193 
2011   2   7   55599  0.7317  0.0108  15.04106705129    0.00000000188 
2011   2   8   55600  0.6625  0.0108  15.04106706334    0.00000000188 
2011   2   9   55601  0.5861  0.0108  15.04106707664    0.00000000188 
2011   2  10   55602  0.5111  0.0105  15.04106708969    0.00000000183 
2011   2  11   55603  0.4237  0.0108  15.04106710491    0.00000000188 
2011   2  12   55604  0.3796  0.0110  15.04106711259    0.00000000191 
2011   2  13   55605  0.3640  0.0112  15.04106711530    0.00000000195 
2011   2  14   55606  0.4154  0.0113  15.04106710635    0.00000000197 
2011   2  15   55607  0.5835  0.0120  15.04106707709    0.00000000209 
2011   2  16   55608  0.8697  0.0123  15.04106702727    0.00000000214 
2011   2  17   55609  1.1603  0.0118  15.04106697668    0.00000000205 
2011   2  18   55610  1.3986  0.0118  15.04106693519    0.00000000205 
2011   2  19   55611  1.5997  0.0106  15.04106690018    0.00000000185 
2011   2  20   55612  1.6572  0.0101  15.04106689017    0.00000000176 
2011   2  21   55613  1.5235  0.0119  15.04106691345    0.00000000207 
2011   2  22   55614  1.2936  0.0119  15.04106695347    0.00000000207 
2011   2  23   55615  1.0082  0.0124  15.04106700316    0.00000000216 
2011   2  24   55616  0.7089  0.0130  15.04106705526    0.00000000226 
2011   2  25   55617  0.5425  0.0129  15.04106708423    0.00000000225 
2011   2  26   55618  0.4506  0.0108  15.04106710023    0.00000000188 
2011   2  27   55619  0.4294  0.0098  15.04106710392    0.00000000171 
2011   2  28   55620  0.5180  0.0111  15.04106708849    0.00000000193 
2011   3   1   55621  0.6838  0.0115  15.04106705963    0.00000000200 


 4 - INFORMATION ON TIME SCALES      
     TAI - UTC = 34 s.  No leap second introduced during period [55594-55621]
     All information concerning time scales : 
	 - leap seconds announcements : Bulletin C 
	 - DUT1 announcements (UT1-UTC with 0.1 ms accuracy) : Bulletin D
      can be found at : 
         - web site : http://hpiers.obspm.fr/eop-pc/
         - anonymous ftp : hpiers.obspm.fr/iers/ or 145.238.100.28


 5 - SUMMARY OF CONTRIBUTED EARTH ORIENTATION PARAMETERS SERIES
 This section gives the average precision of the individual series, some of them
 contributing to the combination (*) and their average agreement with it. 
 The period covered is that one of Bulletin B. 
 
    Units :  micro-arc-seconds for x/y/dX/dY        micro-seconds for UT1/LOD
-----------------------------------------------------------------------------
  EOP series             first line  : Mean  formal  uncertainty
  Periods covered        second line : Weighted RMS agreement with Bulletin B
-----------------------------------------------------------------------------
                                x     y    UT1   LOD   dX    dY   Data Number		

 VLBI Standards
   AUS   1 R  1               184   154     5     -   116   136       5
   55596.27 to 55617.27       393   132    10     -   176   194

   BKG   8 R  2                85    79     2     -    52    60       8
   55596.27 to 55617.27        77   147     7     -    40    57

   GSFC  9 R  4                75    69     2     8    51    57       8
   55596.27 to 55617.27        91   160     6    16    30    50

   IAA   5 R  2               107   101     4     -    75    71       7
   55596.27 to 55617.27       469   254    14     -   175   215

   SPBU  3 R  3               150   123     3     -   101   120       5
   55596.27 to 55614.21       372   377     7     -   141   559

   USNO 10 R  1               104    85     3     -   222   102       7
   55596.27 to 55617.27       150   182     3     -    58    82

   MAO   3 R  1                75    78     3     -    56    54       7
   55596.30 to 55617.27       164   141     9     -   110   136

   IVS   2 R  1 *              57    48     1     -    17    49       7
   55596.27 to 55617.27       117   191     2     -     6    10


 VLBI Intensive
   BKG   3 R  2 *               -     -    11     -     -     -      29
   55594.79 to 55620.79         -     -    22     -     -     -

   GSFC  9 R  2 *               -     -    12     -     -     -      30
   55594.79 to 55620.79         -     -    23     -     -     -

   IAA   5 R  1 *               -     -    12     -     -     -      21
   55594.79 to 55620.79         -     -    25     -     -     -

   PUL  10 R  0                 -     -    11     -     -     -      30
   55594.79 to 55620.79         -     -    25     -     -     -

   USNO  5 R  1 *               -     -    12     -     -     -      30
   55594.79 to 55620.79         -     -    25     -     -     -


 GPS
   CODE 98 P  1                 4     4     -     2     -     -      27
   55594.50 to 55620.50        22    25     -    11     -     -

   JPL  96 P  3                 9    10     -     5     -     -      27
   55594.50 to 55620.50        68    68     -    16     -     -

   GFZ  96 P  2                 5     6     -     1     -     -      27
   55594.50 to 55620.50        37    38     -    13     -     -

   ESOC 96 P  1                13    10     -     1     -     -      27
   55594.50 to 55620.50        51    40     -    12     -     -

   NOAA 96 P  1                 3     3     -    31     -     -      27
   55594.50 to 55620.50        52    70     -    12     -     -

   SIO  96 P  1                14    14     -     3     -     -      27
   55594.50 to 55620.50        28    35     -    13     -     -

   EMR  96 P  3                33    34     -     6     -     -      27
   55594.50 to 55620.50        42    42     -    12     -     -

   IAA   1 P  1                31    36     -     6     -     -      27
   55594.50 to 55620.50       138   139     -    24     -     -

   IGR  96 P  2 *              31    19     -     5     -     -      27
   55594.50 to 55620.50        26    26     -     9     -     -

   IGS   7 P  1 *              32    32     -     7     -     -      27
   55594.50 to 55620.50        18    22     -    10     -     -


 SLR
   MCC  97 L  1               163   205     -    23     -     -      28
   55594.00 to 55621.00       173   132     -   101     -     -

   IAA   2 L  1                40    49     -     2     -     -      28
   55594.00 to 55621.00       245   207     -    17     -     -

   ASI   3 L  2                87   107     -    29     -     -      27
   55594.50 to 55620.50       232   341     -    99     -     -

   PUL  10 L  0                38    44     -     2     -     -      26
   55594.64 to 55619.69       192   126     -    15     -     -

   ILRS  5 L  1 *              65    70     -    23     -     -      27
   55594.50 to 55620.50       139   190     -    51     -     -


 BULLETIN A
   NEOS 97 C  1                61    60     6     -     -     -      28
   55594.00 to 55621.00        29    38    10     -     -     -

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