BULLETIN B 402 5 August 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 0.024 0.018 0.0135 0.019 0.051 2021 6 2 59367 163.505 442.197 -183.7088 0.238 -0.157 0.023 0.018 0.0136 0.041 0.034 2021 6 3 59368 164.269 441.835 -183.6734 0.267 -0.139 0.023 0.018 0.0136 0.041 0.036 2021 6 4 59369 165.264 441.101 -183.7182 0.296 -0.120 0.023 0.018 0.0137 0.042 0.038 2021 6 5 59370 166.494 439.959 -183.7435 0.285 -0.120 0.024 0.018 0.0139 0.043 0.039 2021 6 6 59371 167.443 438.760 -183.7213 0.260 -0.126 0.024 0.018 0.0141 0.043 0.041 2021 6 7 59372 168.452 437.773 -183.5146 0.235 -0.131 0.024 0.018 0.0151 0.043 0.043 2021 6 8 59373 169.988 437.038 -183.1307 0.210 -0.137 0.024 0.018 0.0159 0.044 0.045 2021 6 9 59374 171.662 436.466 -182.5961 0.198 -0.126 0.024 0.019 0.0160 0.045 0.046 2021 6 10 59375 173.060 436.107 -181.9126 0.190 -0.111 0.024 0.019 0.0161 0.045 0.048 2021 6 11 59376 174.245 435.720 -181.0931 0.205 -0.105 0.024 0.019 0.0153 0.046 0.049 2021 6 12 59377 175.463 435.402 -180.2017 0.228 -0.104 0.024 0.019 0.0156 0.047 0.051 2021 6 13 59378 176.463 435.076 -179.2824 0.251 -0.102 0.024 0.019 0.0157 0.047 0.052 2021 6 14 59379 177.561 434.800 -178.3898 0.274 -0.100 0.024 0.019 0.0158 0.048 0.054 2021 6 15 59380 178.436 434.544 -177.6041 0.297 -0.098 0.025 0.019 0.0158 0.049 0.056 2021 6 16 59381 179.161 433.958 -176.9638 0.273 -0.128 0.025 0.019 0.0147 0.049 0.057 2021 6 17 59382 179.975 433.150 -176.5219 0.235 -0.167 0.025 0.019 0.0141 0.050 0.058 2021 6 18 59383 181.538 431.985 -176.2920 0.198 -0.206 0.025 0.019 0.0139 0.051 0.059 2021 6 19 59384 183.459 431.221 -176.2499 0.195 -0.200 0.026 0.019 0.0139 0.051 0.059 2021 6 20 59385 185.268 430.690 -176.2848 0.204 -0.177 0.026 0.019 0.0139 0.052 0.059 2021 6 21 59386 187.008 430.371 -176.2299 0.213 -0.153 0.026 0.019 0.0138 0.052 0.060 2021 6 22 59387 188.612 429.729 -175.9694 0.223 -0.130 0.026 0.019 0.0121 0.053 0.060 2021 6 23 59388 190.249 428.692 -175.4577 0.211 -0.157 0.026 0.019 0.0120 0.054 0.059 2021 6 24 59389 191.984 427.561 -174.6551 0.193 -0.198 0.026 0.019 0.0118 0.054 0.059 2021 6 25 59390 193.895 426.260 -173.6026 0.175 -0.239 0.026 0.019 0.0112 0.055 0.058 2021 6 26 59391 195.529 424.979 -172.3902 0.169 -0.232 0.026 0.019 0.0110 0.056 0.057 2021 6 27 59392 197.249 423.941 -171.1520 0.169 -0.206 0.026 0.019 0.0108 0.056 0.056 2021 6 28 59393 199.016 423.212 -170.0013 0.168 -0.180 0.026 0.019 0.0103 0.057 0.055 2021 6 29 59394 201.014 422.014 -168.9979 0.167 -0.155 0.026 0.019 0.0107 0.057 0.054 2021 6 30 59395 203.151 420.682 -168.1557 0.175 -0.142 0.026 0.019 0.0104 0.058 0.055 2021 7 1 59396 205.011 419.357 -167.4255 0.185 -0.133 0.026 0.019 0.0105 0.059 0.056 Preliminary extension 2021 7 2 59397 206.921 418.137 -166.7352 0.195 -0.125 0.026 0.019 0.0107 0.060 0.057 2021 7 3 59398 209.024 416.956 -166.0067 0.213 -0.118 0.027 0.019 0.0108 0.061 0.058 2021 7 4 59399 211.331 415.811 -165.1797 0.234 -0.112 0.027 0.020 0.0110 0.062 0.059 2021 7 5 59400 213.414 414.996 -164.2095 0.255 -0.106 0.027 0.020 0.0111 0.063 0.060 2021 7 6 59401 215.650 414.027 -163.0892 0.276 -0.100 0.026 0.019 0.0111 0.064 0.061 2021 7 7 59402 218.140 413.172 -161.8291 0.297 -0.094 0.026 0.020 0.0110 0.065 0.062 2021 7 8 59403 220.211 412.135 -160.4574 0.276 -0.077 0.026 0.020 0.0112 0.066 0.063 2021 7 9 59404 221.834 410.819 -159.0228 0.245 -0.059 0.026 0.020 0.0113 0.067 0.065 2021 7 10 59405 223.596 409.094 -157.5891 0.246 -0.056 0.026 0.020 0.0114 0.068 0.066 2021 7 11 59406 225.670 407.613 -156.2168 0.259 -0.059 0.026 0.020 0.0116 0.069 0.066 2021 7 12 59407 227.520 406.498 -154.9675 0.273 -0.062 0.026 0.020 0.0117 0.071 0.067 2021 7 13 59408 229.365 405.738 -153.8995 0.286 -0.064 0.026 0.020 0.0119 0.072 0.067 2021 7 14 59409 230.849 405.172 -153.0080 0.285 -0.081 0.026 0.020 0.0121 0.073 0.069 2021 7 15 59410 232.366 404.180 -152.4436 0.280 -0.101 0.026 0.020 0.0124 0.074 0.071 2021 7 16 59411 233.930 403.082 -152.0112 0.275 -0.121 0.027 0.020 0.0126 0.076 0.073 2021 7 17 59412 235.570 402.256 -151.7390 0.263 -0.137 0.027 0.020 0.0129 0.077 0.076 2021 7 18 59413 236.936 401.570 -151.5322 0.247 -0.151 0.028 0.021 0.0133 0.079 0.081 2021 7 19 59414 238.372 400.313 -151.2064 0.232 -0.166 0.029 0.021 0.0136 0.081 0.085 2021 7 20 59415 239.934 398.937 -150.7173 0.216 -0.181 0.029 0.021 0.0140 0.082 0.089 2021 7 21 59416 241.407 397.625 -150.0848 0.209 -0.178 0.030 0.021 0.0145 0.500 0.500 2021 7 22 59417 242.542 396.349 -149.2576 0.209 -0.163 0.030 0.022 0.0150 0.500 0.500 2021 7 23 59418 243.566 394.860 -148.3406 0.213 -0.144 0.031 0.022 0.0156 0.500 0.500 2021 7 24 59419 244.490 393.374 -147.4954 0.218 -0.128 0.032 0.022 0.0162 0.500 0.500 2021 7 25 59420 244.659 392.116 -146.7320 0.221 -0.123 0.032 0.023 0.0167 0.500 0.500 2021 7 26 59421 244.272 390.820 -146.1053 0.220 -0.126 0.033 0.023 0.0173 0.500 0.500 2021 7 27 59422 244.029 389.278 -145.5597 0.219 -0.132 0.034 0.024 0.0178 0.500 0.500 2021 7 28 59423 243.960 387.030 -145.0824 0.218 -0.134 0.034 0.024 0.0184 0.500 0.500 2021 7 29 59424 244.276 384.536 -144.7019 0.219 -0.131 0.035 0.025 0.0190 0.500 0.500 2021 7 30 59425 245.039 382.472 -144.3261 0.222 -0.124 0.036 0.026 0.0197 0.500 0.500 2021 7 31 59426 246.035 381.095 -143.9234 0.224 -0.120 0.036 0.026 0.0204 0.500 0.500 2021 8 1 59427 246.761 380.166 -143.3725 0.227 -0.120 0.037 0.027 0.0210 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 6 2 59367 -107.189 -10.310 0.103 0.034 2021 6 3 59368 -107.307 -9.973 0.103 0.036 2021 6 4 59369 -107.243 -9.722 0.106 0.038 2021 6 5 59370 -107.338 -9.564 0.108 0.039 2021 6 6 59371 -107.712 -9.420 0.108 0.041 2021 6 7 59372 -108.222 -9.335 0.108 0.043 2021 6 8 59373 -108.616 -9.447 0.111 0.045 2021 6 9 59374 -108.746 -9.756 0.113 0.046 2021 6 10 59375 -108.720 -10.098 0.113 0.048 2021 6 11 59376 -108.643 -10.282 0.116 0.049 2021 6 12 59377 -108.645 -10.266 0.118 0.051 2021 6 13 59378 -108.763 -10.171 0.118 0.052 2021 6 14 59379 -108.931 -10.112 0.121 0.054 2021 6 15 59380 -109.005 -10.092 0.123 0.056 2021 6 16 59381 -109.007 -10.090 0.123 0.057 2021 6 17 59382 -108.937 -10.073 0.126 0.058 2021 6 18 59383 -108.971 -10.051 0.128 0.059 2021 6 19 59384 -109.186 -9.941 0.128 0.059 2021 6 20 59385 -109.672 -9.715 0.131 0.059 2021 6 21 59386 -110.397 -9.446 0.131 0.060 2021 6 22 59387 -111.169 -9.304 0.133 0.060 2021 6 23 59388 -111.740 -9.402 0.136 0.059 2021 6 24 59389 -111.870 -9.570 0.136 0.059 2021 6 25 59390 -111.627 -9.678 0.138 0.058 2021 6 26 59391 -111.223 -9.764 0.141 0.057 2021 6 27 59392 -110.867 -9.981 0.141 0.056 2021 6 28 59393 -110.723 -10.241 0.143 0.055 2021 6 29 59394 -110.903 -10.285 0.143 0.054 2021 6 30 59395 -111.326 -10.039 0.146 0.055 2021 7 1 59396 -111.755 -9.689 0.148 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 2021 6 2 59367 -0.1118 0.0066 15.04106719813 0.00000000115 2021 6 3 59368 0.0119 0.0065 15.04106717660 0.00000000113 2021 6 4 59369 0.0536 0.0065 15.04106716934 0.00000000113 2021 6 5 59370 -0.0156 0.0065 15.04106718139 0.00000000113 2021 6 6 59371 -0.1340 0.0065 15.04106720200 0.00000000113 2021 6 7 59372 -0.2761 0.0065 15.04106722674 0.00000000113 2021 6 8 59373 -0.4348 0.0066 15.04106725436 0.00000000115 2021 6 9 59374 -0.6056 0.0066 15.04106728410 0.00000000115 2021 6 10 59375 -0.7632 0.0066 15.04106731153 0.00000000115 2021 6 11 59376 -0.8734 0.0066 15.04106733072 0.00000000115 2021 6 12 59377 -0.9192 0.0067 15.04106733869 0.00000000117 2021 6 13 59378 -0.9227 0.0067 15.04106733930 0.00000000117 2021 6 14 59379 -0.8460 0.0066 15.04106732595 0.00000000115 2021 6 15 59380 -0.7086 0.0066 15.04106730203 0.00000000115 2021 6 16 59381 -0.5221 0.0066 15.04106726956 0.00000000115 2021 6 17 59382 -0.3366 0.0065 15.04106723727 0.00000000113 2021 6 18 59383 -0.1418 0.0066 15.04106720336 0.00000000115 2021 6 19 59384 -0.0088 0.0066 15.04106718020 0.00000000115 2021 6 20 59385 0.0040 0.0066 15.04106717797 0.00000000115 2021 6 21 59386 -0.1366 0.0066 15.04106720245 0.00000000115 2021 6 22 59387 -0.3671 0.0067 15.04106724258 0.00000000117 2021 6 23 59388 -0.6531 0.0067 15.04106729237 0.00000000117 2021 6 24 59389 -0.9461 0.0066 15.04106734337 0.00000000115 2021 6 25 59390 -1.1467 0.0066 15.04106737830 0.00000000115 2021 6 26 59391 -1.2514 0.0067 15.04106739652 0.00000000117 2021 6 27 59392 -1.2122 0.0067 15.04106738970 0.00000000117 2021 6 28 59393 -1.0808 0.0067 15.04106736682 0.00000000117 2021 6 29 59394 -0.8954 0.0067 15.04106733455 0.00000000117 2021 6 30 59395 -0.7509 0.0068 15.04106730939 0.00000000118 2021 7 1 59396 -0.7061 0.0068 15.04106730159 0.00000000118 4 - INFORMATION ON TIME SCALES TAI - UTC = 37 s. during period [59367-59396] No leap second introduced during period [59367-59396] 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 69 91 38 - 0 0 8 59369.29 to 59394.34 199 182 56 - 709 354 BKG bkg00020a.eops 49 56 3 - 13 35 8 59369.27 to 59394.21 84 105 14 - 25 35 GSFC gsf2020a.eoxy 46 46 3 8 13 35 8 59369.27 to 59394.21 68 63 13 11 19 17 IAA iaa2021a.eops 58 65 4 - 17 45 9 59369.27 to 59394.21 178 293 14 - 51 55 USNO usn2021b.eoxy 34 40 2 - 14 37 8 59369.27 to 59394.21 88 59 13 - 21 35 IVS * ivs20r1X.eops 16 20 1 - 5 15 8 59369.28 to 59394.22 63 87 12 - 5 7 VLBI Intensive GSI * gsiint2c.eopi - - 11 - - - 8 59370.33 to 59392.33 - - 22 - - - BKG * bkg2020.eopi - - 19 - - - 32 59367.79 to 59395.79 - - 44 - - - GSFC * gsf2020a.eopi - - 20 - - - 31 59367.79 to 59395.79 - - 51 - - - IAA * iaa2021a.eopi - - 25 - - - 36 59367.79 to 59395.79 - - 32 - - - USNO * usn2021b.eopi - - 23 - - - 32 59367.79 to 59395.79 - - 62 - - - GPS CODE COD*ERP_R 5 5 - 0 - - 29 59367.50 to 59395.50 19 20 - 11 - - JPL jpl*.erp 10 10 - 5 - - 29 59367.50 to 59395.50 21 27 - 20 - - GFZ gfz*.erp 7 8 - 1 - - 29 59367.50 to 59395.50 24 34 - 18 - - ESOC esa*.erp 7 8 - 3 - - 29 59367.50 to 59395.50 22 21 - 11 - - SIO sio*.erp siu*.erp 30 28 - 5 - - 8 59367.50 to 59395.50 21 19 - 10 - - EMR emr*.erp 3 3 - 0 - - 29 59367.50 to 59395.50 48 35 - 10 - - IAA gnss.res 0 0 - 0 - - 29 59367.50 to 59395.50 57 51 - 27 - - GRGS grg*.erp 240 240 - 0 - - 29 59367.50 to 59395.50 16 19 - 9 - - ASI asi*.erp 9 9 - 0 - - 29 59367.50 to 59395.50 36 35 - 46 - - MIT mit*.erp 12 13 - 2 - - 29 59367.50 to 59395.50 28 27 - 13 - - IGR * igs96p02.erp 10 10 - 2 - - 29 59367.50 to 59395.50 16 18 - 10 - - IGS * igs00p03.erp 3 3 - 0 - - 29 59367.50 to 59395.50 22 21 - 12 - - SLR MCC tg*.02 204 217 - 27 - - 30 59367.00 to 59396.00 124 148 - 235 - - IAA slr_v.dat 66 73 - 4 - - 30 59367.00 to 59396.00 178 270 - 25 - - ASI slr_oca*.eop 82 92 - 19 - - 29 59367.50 to 59395.50 194 202 - 63 - - ILRS * ilrsa.eop 26 33 - 4 - - 4 59367.50 to 59370.50 68 135 - 23 - - BULLETIN A NEOS mark3.out 18 19 5 - - - 30 59367.00 to 59396.00 35 33 22 - - - To unsubscribe : http://hpiers.obspm.fr/eop-pc/products/bulletins/bulletin_registration.html