BULLETIN B 403 6 September 2021 Contents are described in https://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 March 1 2017 - consistent with ITRF 2014. DATE MJD x y UT1-UTC dX dY x err y err UT1 err dX err dY err (0 h UTC) mas mas ms mas mas mas mas ms mas mas Final values Mean formal error 0.026 0.019 0.0112 0.025 0.065 2021 7 2 59397 206.921 418.137 -166.7352 0.195 -0.125 0.026 0.019 0.0107 0.054 0.054 2021 7 3 59398 209.024 416.956 -166.0067 0.213 -0.118 0.027 0.019 0.0108 0.053 0.055 2021 7 4 59399 211.331 415.811 -165.1797 0.234 -0.112 0.027 0.020 0.0110 0.054 0.056 2021 7 5 59400 213.414 414.996 -164.2095 0.255 -0.106 0.027 0.020 0.0111 0.055 0.056 2021 7 6 59401 215.650 414.027 -163.0892 0.276 -0.100 0.026 0.019 0.0111 0.055 0.057 2021 7 7 59402 218.140 413.172 -161.8291 0.297 -0.094 0.026 0.020 0.0109 0.056 0.057 2021 7 8 59403 220.214 412.138 -160.4574 0.276 -0.077 0.026 0.019 0.0104 0.057 0.058 2021 7 9 59404 221.832 410.821 -159.0228 0.245 -0.059 0.026 0.019 0.0103 0.057 0.059 2021 7 10 59405 223.600 409.097 -157.5892 0.240 -0.056 0.026 0.020 0.0103 0.058 0.059 2021 7 11 59406 225.666 407.615 -156.2169 0.245 -0.060 0.026 0.020 0.0103 0.059 0.059 2021 7 12 59407 227.521 406.499 -154.9674 0.250 -0.064 0.026 0.020 0.0101 0.059 0.058 2021 7 13 59408 229.363 405.735 -153.8980 0.256 -0.067 0.026 0.020 0.0098 0.060 0.058 2021 7 14 59409 230.852 405.177 -153.0567 0.239 -0.073 0.026 0.020 0.0099 0.061 0.059 2021 7 15 59410 232.364 404.183 -152.4225 0.216 -0.080 0.026 0.019 0.0109 0.062 0.061 2021 7 16 59411 233.932 403.085 -152.0045 0.193 -0.086 0.026 0.019 0.0107 0.063 0.063 2021 7 17 59412 235.568 402.256 -151.7411 0.192 -0.098 0.026 0.019 0.0110 0.063 0.064 2021 7 18 59413 236.938 401.571 -151.5176 0.197 -0.111 0.027 0.019 0.0112 0.064 0.065 2021 7 19 59414 238.366 400.312 -151.1975 0.202 -0.125 0.027 0.019 0.0114 0.065 0.066 2021 7 20 59415 239.941 398.929 -150.7114 0.207 -0.138 0.027 0.019 0.0109 0.066 0.067 2021 7 21 59416 241.402 397.614 -150.0616 0.224 -0.143 0.027 0.020 0.0113 0.067 0.068 2021 7 22 59417 242.550 396.349 -149.2653 0.244 -0.145 0.027 0.019 0.0117 0.068 0.070 2021 7 23 59418 243.559 394.850 -148.3896 0.263 -0.148 0.027 0.019 0.0116 0.069 0.072 2021 7 24 59419 244.504 393.363 -147.5216 0.241 -0.137 0.028 0.020 0.0117 0.070 0.073 2021 7 25 59420 244.659 392.108 -146.7385 0.205 -0.120 0.028 0.020 0.0119 0.071 0.074 2021 7 26 59421 244.282 390.818 -146.0743 0.168 -0.104 0.028 0.020 0.0114 0.072 0.075 2021 7 27 59422 244.021 389.282 -145.5380 0.132 -0.087 0.028 0.020 0.0110 0.073 0.076 2021 7 28 59423 243.957 387.023 -145.1164 0.131 -0.079 0.028 0.020 0.0114 0.074 0.076 2021 7 29 59424 244.271 384.533 -144.7485 0.140 -0.073 0.027 0.020 0.0125 0.075 0.077 2021 7 30 59425 245.054 382.456 -144.3684 0.149 -0.067 0.027 0.020 0.0126 0.076 0.078 2021 7 31 59426 246.021 381.094 -143.9172 0.182 -0.083 0.027 0.020 0.0128 0.077 0.079 2021 8 1 59427 246.780 380.162 -143.3541 0.223 -0.105 0.027 0.020 0.0130 0.078 0.079 Preliminary extension 2021 8 2 59428 247.724 379.020 -142.6563 0.264 -0.127 0.027 0.020 0.0131 0.079 0.079 2021 8 3 59429 248.665 377.672 -141.8281 0.305 -0.149 0.027 0.020 0.0125 0.080 0.080 2021 8 4 59430 249.247 376.225 -140.8819 0.295 -0.110 0.027 0.020 0.0134 0.082 0.080 2021 8 5 59431 250.318 374.716 -139.8588 0.272 -0.055 0.027 0.020 0.0130 0.083 0.080 2021 8 6 59432 251.557 373.439 -138.8293 0.256 -0.038 0.027 0.020 0.0125 0.084 0.079 2021 8 7 59433 252.384 372.189 -137.7997 0.244 -0.034 0.027 0.020 0.0125 0.085 0.079 2021 8 8 59434 252.617 370.958 -136.7543 0.231 -0.031 0.027 0.020 0.0124 0.086 0.078 2021 8 9 59435 251.963 369.546 -135.8220 0.219 -0.028 0.027 0.020 0.0123 0.087 0.078 2021 8 10 59436 250.846 367.502 -135.0686 0.206 -0.025 0.027 0.020 0.0121 0.088 0.077 2021 8 11 59437 250.176 365.256 -134.5083 0.194 -0.022 0.027 0.020 0.0120 0.089 0.077 2021 8 12 59438 249.899 363.344 -134.1177 0.182 -0.080 0.027 0.020 0.0120 0.090 0.077 2021 8 13 59439 249.587 361.518 -133.8309 0.169 -0.157 0.027 0.019 0.0120 0.091 0.076 2021 8 14 59440 249.168 359.748 -133.5512 0.179 -0.171 0.027 0.019 0.0120 0.092 0.076 2021 8 15 59441 248.727 358.102 -133.1659 0.195 -0.164 0.027 0.019 0.0120 0.094 0.075 2021 8 16 59442 248.327 356.539 -132.5841 0.212 -0.156 0.026 0.019 0.0120 0.095 0.074 2021 8 17 59443 248.134 354.896 -131.7638 0.229 -0.149 0.026 0.019 0.0120 0.096 0.073 2021 8 18 59444 248.005 353.279 -130.7256 0.246 -0.141 0.026 0.019 0.0119 0.097 0.073 2021 8 19 59445 247.975 351.656 -129.5257 0.309 -0.138 0.026 0.019 0.0123 0.099 0.077 2021 8 20 59446 247.731 350.103 -128.3571 0.385 -0.137 0.026 0.019 0.0127 0.101 0.083 2021 8 21 59447 247.290 348.280 -127.2209 0.396 -0.135 0.026 0.019 0.0133 0.500 0.500 2021 8 22 59448 246.817 346.553 -126.3210 0.362 -0.132 0.026 0.019 0.0139 0.500 0.500 2021 8 23 59449 246.329 344.557 -125.5695 0.305 -0.128 0.026 0.020 0.0145 0.500 0.500 2021 8 24 59450 245.987 342.232 -124.9891 0.254 -0.123 0.026 0.020 0.0151 0.500 0.500 2021 8 25 59451 246.001 340.076 -124.5306 0.232 -0.119 0.026 0.020 0.0158 0.500 0.500 2021 8 26 59452 246.033 338.312 -124.0169 0.243 -0.118 0.026 0.020 0.0164 0.500 0.500 2021 8 27 59453 246.039 336.465 -123.5196 0.270 -0.119 0.027 0.020 0.0171 0.500 0.500 2021 8 28 59454 246.084 334.711 -122.9069 0.290 -0.122 0.027 0.021 0.0177 0.500 0.500 2021 8 29 59455 246.014 333.216 -122.1411 0.292 -0.125 0.028 0.021 0.0184 0.500 0.500 2021 8 30 59456 245.821 331.657 -121.2920 0.283 -0.127 0.028 0.021 0.0190 0.500 0.500 2021 8 31 59457 245.058 329.883 -120.3369 0.277 -0.127 0.029 0.022 0.0196 0.500 0.500 2021 9 1 59458 244.291 327.778 -119.3090 0.283 -0.127 0.029 0.022 0.0204 0.500 0.500 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 2021 7 2 59397 -112.004 -9.464 0.136 0.054 2021 7 3 59398 -112.140 -9.398 0.133 0.055 2021 7 4 59399 -112.363 -9.373 0.136 0.056 2021 7 5 59400 -112.694 -9.336 0.138 0.056 2021 7 6 59401 -112.980 -9.377 0.138 0.057 2021 7 7 59402 -113.113 -9.583 0.141 0.057 2021 7 8 59403 -113.230 -9.877 0.143 0.058 2021 7 9 59404 -113.321 -10.078 0.143 0.059 2021 7 10 59405 -113.323 -10.077 0.146 0.059 2021 7 11 59406 -113.312 -9.920 0.148 0.059 2021 7 12 59407 -113.374 -9.766 0.148 0.058 2021 7 13 59408 -113.495 -9.729 0.151 0.058 2021 7 14 59409 -113.617 -9.794 0.153 0.059 2021 7 15 59410 -113.614 -9.847 0.156 0.061 2021 7 16 59411 -113.595 -9.787 0.158 0.063 2021 7 17 59412 -113.759 -9.608 0.158 0.064 2021 7 18 59413 -114.276 -9.388 0.161 0.065 2021 7 19 59414 -115.015 -9.262 0.163 0.066 2021 7 20 59415 -115.643 -9.312 0.166 0.067 2021 7 21 59416 -115.876 -9.476 0.168 0.068 2021 7 22 59417 -115.745 -9.604 0.171 0.070 2021 7 23 59418 -115.468 -9.626 0.173 0.072 2021 7 24 59419 -115.321 -9.619 0.176 0.073 2021 7 25 59420 -115.265 -9.715 0.178 0.074 2021 7 26 59421 -115.280 -9.873 0.181 0.075 2021 7 27 59422 -115.457 -9.910 0.184 0.076 2021 7 28 59423 -115.784 -9.750 0.186 0.076 2021 7 29 59424 -116.221 -9.509 0.189 0.077 2021 7 30 59425 -116.596 -9.367 0.191 0.078 2021 7 31 59426 -116.756 -9.383 0.194 0.079 2021 8 1 59427 -116.809 -9.429 0.196 0.079 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 2021 7 2 59397 -0.7290 0.0068 15.04106730558 0.00000000118 2021 7 3 59398 -0.7956 0.0069 15.04106731717 0.00000000120 2021 7 4 59399 -0.8841 0.0069 15.04106733258 0.00000000120 2021 7 5 59400 -1.0197 0.0070 15.04106735619 0.00000000122 2021 7 6 59401 -1.1760 0.0068 15.04106738340 0.00000000118 2021 7 7 59402 -1.3002 0.0068 15.04106740502 0.00000000118 2021 7 8 59403 -1.4004 0.0068 15.04106742246 0.00000000118 2021 7 9 59404 -1.4520 0.0068 15.04106743144 0.00000000118 2021 7 10 59405 -1.4271 0.0068 15.04106742711 0.00000000118 2021 7 11 59406 -1.3154 0.0068 15.04106740766 0.00000000118 2021 7 12 59407 -1.1382 0.0069 15.04106737682 0.00000000120 2021 7 13 59408 -0.9647 0.0069 15.04106734661 0.00000000120 2021 7 14 59409 -0.7412 0.0069 15.04106730770 0.00000000120 2021 7 15 59410 -0.5190 0.0069 15.04106726902 0.00000000120 2021 7 16 59411 -0.3391 0.0069 15.04106723770 0.00000000120 2021 7 17 59412 -0.2516 0.0069 15.04106722247 0.00000000120 2021 7 18 59413 -0.2888 0.0070 15.04106722895 0.00000000122 2021 7 19 59414 -0.3898 0.0070 15.04106724653 0.00000000122 2021 7 20 59415 -0.5551 0.0070 15.04106727531 0.00000000122 2021 7 21 59416 -0.7199 0.0071 15.04106730400 0.00000000124 2021 7 22 59417 -0.8670 0.0070 15.04106732960 0.00000000122 2021 7 23 59418 -0.9224 0.0070 15.04106733925 0.00000000122 2021 7 24 59419 -0.8550 0.0070 15.04106732751 0.00000000122 2021 7 25 59420 -0.7245 0.0071 15.04106730480 0.00000000124 2021 7 26 59421 -0.6021 0.0071 15.04106728349 0.00000000124 2021 7 27 59422 -0.4795 0.0071 15.04106726214 0.00000000124 2021 7 28 59423 -0.4072 0.0071 15.04106724956 0.00000000124 2021 7 29 59424 -0.3704 0.0070 15.04106724315 0.00000000122 2021 7 30 59425 -0.4102 0.0070 15.04106725008 0.00000000122 2021 7 31 59426 -0.5170 0.0071 15.04106726867 0.00000000124 2021 8 1 59427 -0.6384 0.0071 15.04106728981 0.00000000124 4 - INFORMATION ON TIME SCALES TAI - UTC = 37 s. during period [59397-59427] No leap second introduced during period [59397-59427] All information concerning time scales : - leap seconds announcements : Bulletin C - DUT1 announcements (UT1-UTC with 0.1 s accuracy) : Bulletin D can be found at : - web site : http://hpiers.obspm.fr/eop-pc/ - anonymous ftp://hpiers.obspm.fr/iers/ 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 CGS cgs2007a.eops 55 72 6 - 0 0 9 59397.24 to 59425.23 175 233 38 - 858 232 BKG bkg00020a.eops 41 47 2 - 11 34 9 59397.27 to 59425.27 87 66 11 - 58 39 GSFC gsf2020a.eoxy 42 38 2 5 11 31 9 59397.27 to 59425.27 56 49 12 15 31 30 IAA iaa2021a.eops 34 38 2 - 10 28 8 59397.27 to 59422.21 174 160 15 - 76 59 USNO usn2021b.eoxy 30 32 1 - 12 33 9 59397.27 to 59425.27 65 43 13 - 34 36 IVS * ivs20r1X.eops 15 16 1 - 5 15 9 59397.26 to 59425.25 43 61 14 - 5 2 VLBI Intensive GSI * gsiint2c.eopi - - 10 - - - 8 59398.33 to 59426.33 - - 36 - - - BKG * bkg2020.eopi - - 12 - - - 31 59397.80 to 59426.33 - - 25 - - - GSFC * gsf2020a.eopi - - 15 - - - 31 59397.80 to 59426.33 - - 59 - - - IAA * iaa2021a.eopi - - 25 - - - 38 59397.80 to 59426.33 - - 35 - - - USNO * usn2021b.eopi - - 15 - - - 31 59397.80 to 59426.33 - - 47 - - - GPS CODE COD*ERP_R 5 5 - 0 - - 30 59397.50 to 59426.50 23 20 - 11 - - JPL jpl*.erp 10 11 - 5 - - 30 59397.50 to 59426.50 28 29 - 15 - - GFZ gfz*.erp 7 8 - 1 - - 30 59397.50 to 59426.50 23 26 - 11 - - ESOC esa*.erp 7 8 - 3 - - 30 59397.50 to 59426.50 25 21 - 8 - - SIO sio*.erp siu*.erp 29 31 - 5 - - 20 59397.50 to 59426.50 35 36 - 15 - - EMR emr*.erp 4 3 - 0 - - 30 59397.50 to 59426.50 54 32 - 11 - - IAA gnss.res 0 0 - 0 - - 30 59397.50 to 59426.50 66 74 - 27 - - GRGS grg*.erp 243 243 - 0 - - 30 59397.50 to 59426.50 17 19 - 11 - - ASI asi*.erp 9 9 - 0 - - 30 59397.50 to 59426.50 39 42 - 75 - - MIT mit*.erp 13 13 - 2 - - 30 59397.50 to 59426.50 29 28 - 12 - - IGR * igs96p02.erp 11 9 - 2 - - 30 59397.50 to 59426.50 20 22 - 9 - - IGS * igs00p03.erp 3 3 - 0 - - 30 59397.50 to 59426.50 23 21 - 13 - - SLR MCC tg*.02 217 261 - 34 - - 31 59397.00 to 59427.00 185 207 - 240 - - IAA slr_v.dat 72 95 - 6 - - 28 59397.00 to 59427.00 189 336 - 27 - - ASI slr_oca*.eop 83 106 - 21 - - 30 59397.50 to 59426.50 237 328 - 70 - - ILRS * ilrsa.eop 50 65 - 11 - - 30 59397.50 to 59426.50 159 188 - 36 - - BULLETIN A NEOS mark3.out 17 18 5 - - - 31 59397.00 to 59427.00 37 46 18 - - - To unsubscribe : http://hpiers.obspm.fr/eop-pc/products/bulletins/bulletin_registration.html