BULLETIN B 426 2 August 2023 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 0.065 0.062 0.0349 0.251 0.092 2023 6 2 60097 99.280 508.684 -46.2257 0.337 -0.131 0.077 0.065 0.0180 0.117 0.078 2023 6 3 60098 102.195 509.333 -46.2142 0.277 -0.128 0.076 0.063 0.0161 0.149 0.075 2023 6 4 60099 105.220 510.064 -45.9633 0.242 -0.127 0.075 0.062 0.0158 0.199 0.070 2023 6 5 60100 108.006 510.376 -45.4993 0.232 -0.132 0.074 0.064 0.0181 0.250 0.065 2023 6 6 60101 111.217 510.811 -44.9675 0.244 -0.145 0.071 0.066 0.0232 0.283 0.062 2023 6 7 60102 114.187 511.330 -44.4769 0.288 -0.183 0.068 0.070 0.0336 0.473 0.077 2023 6 8 60103 116.506 511.524 -44.1244 0.343 -0.229 0.066 0.072 0.0513 0.778 0.103 2023 6 9 60104 119.171 511.814 -43.9844 0.395 -0.270 0.064 0.072 0.0682 1.041 0.125 2023 6 10 60105 121.697 512.135 -44.0725 0.402 -0.303 0.062 0.073 0.0595 0.958 0.122 2023 6 11 60106 123.832 512.556 -44.3300 0.383 -0.322 0.063 0.074 0.0429 0.684 0.106 2023 6 12 60107 126.093 512.902 -44.6157 0.359 -0.319 0.064 0.075 0.0335 0.406 0.090 2023 6 13 60108 128.655 513.023 -44.8327 0.339 -0.289 0.066 0.075 0.0287 0.222 0.079 2023 6 14 60109 131.265 513.186 -44.8926 0.348 -0.204 0.067 0.073 0.0269 0.175 0.088 2023 6 15 60110 133.765 513.018 -44.7062 0.360 -0.112 0.067 0.069 0.0251 0.148 0.100 2023 6 16 60111 136.473 512.884 -44.2808 0.352 -0.056 0.066 0.063 0.0212 0.130 0.107 2023 6 17 60112 139.533 512.907 -43.6680 0.336 -0.036 0.065 0.059 0.0174 0.111 0.112 2023 6 18 60113 142.445 512.759 -42.9057 0.354 -0.056 0.064 0.057 0.0156 0.098 0.104 2023 6 19 60114 145.679 512.473 -42.0518 0.397 -0.102 0.065 0.057 0.0157 0.082 0.085 2023 6 20 60115 148.651 512.369 -41.1848 0.436 -0.149 0.066 0.058 0.0176 0.067 0.066 2023 6 21 60116 151.998 511.955 -40.3854 0.418 -0.146 0.067 0.058 0.0214 0.069 0.066 2023 6 22 60117 155.498 511.551 -39.6589 0.374 -0.121 0.067 0.059 0.0273 0.078 0.070 2023 6 23 60118 158.323 511.208 -39.0256 0.327 -0.096 0.067 0.058 0.0338 0.086 0.075 2023 6 24 60119 161.368 510.809 -38.4982 0.320 -0.122 0.064 0.056 0.0404 0.089 0.078 2023 6 25 60120 164.234 510.724 -38.0713 0.338 -0.175 0.060 0.053 0.0465 0.091 0.083 2023 6 26 60121 167.176 510.340 -37.7554 0.364 -0.226 0.063 0.054 0.0534 0.094 0.088 2023 6 27 60122 170.433 509.962 -37.5206 0.389 -0.261 0.060 0.056 0.0557 0.095 0.092 2023 6 28 60123 173.953 509.955 -37.3143 0.395 -0.223 0.055 0.056 0.0681 0.113 0.105 2023 6 29 60124 176.991 509.637 -37.0420 0.391 -0.158 0.054 0.054 0.0451 0.141 0.126 2023 6 30 60125 180.263 509.120 -36.6739 0.383 -0.095 0.054 0.051 0.0523 0.166 0.144 2023 7 1 60126 183.626 508.483 -36.1336 0.367 -0.079 0.054 0.049 0.0558 0.164 0.140 Preliminary extension 2023 7 2 60127 187.226 507.848 -35.3981 0.349 -0.097 0.054 0.048 0.0605 0.148 0.121 2023 7 3 60128 190.492 507.593 -34.4896 0.334 -0.133 0.056 0.051 0.0394 0.130 0.100 2023 7 4 60129 193.198 507.332 -33.5252 0.327 -0.180 0.053 0.047 0.0420 0.117 0.085 2023 7 5 60130 195.899 507.074 -32.6349 0.343 -0.240 0.050 0.044 0.0370 0.109 0.079 2023 7 6 60131 198.424 506.385 -31.9096 0.368 -0.298 0.047 0.042 0.0311 0.099 0.072 2023 7 7 60132 201.229 505.532 -31.4326 0.393 -0.339 0.045 0.041 0.0282 0.090 0.066 2023 7 8 60133 204.159 504.523 -31.1607 0.403 -0.315 0.044 0.041 0.0250 0.084 0.063 2023 7 9 60134 207.008 503.195 -30.9670 0.401 -0.250 0.044 0.041 0.0214 0.074 0.060 2023 7 10 60135 209.527 502.004 -30.6965 0.392 -0.175 0.044 0.041 0.0185 0.064 0.056 2023 7 11 60136 212.160 500.937 -30.3021 0.377 -0.108 0.045 0.042 0.0162 0.057 0.053 2023 7 12 60137 214.580 499.891 -29.7139 0.351 -0.098 0.045 0.041 0.0147 0.063 0.065 2023 7 13 60138 216.926 498.812 -28.8588 0.326 -0.113 0.046 0.041 0.0136 0.076 0.083 2023 7 14 60139 219.380 497.587 -27.8054 0.309 -0.134 0.046 0.041 0.0131 0.086 0.098 2023 7 15 60140 221.886 496.540 -26.6049 0.445 -0.164 0.047 0.040 0.0134 0.097 0.113 2023 7 16 60141 224.374 495.466 -25.3029 0.611 -0.185 0.049 0.041 0.0143 0.112 0.132 2023 7 17 60142 226.952 494.545 -24.0182 0.671 -0.179 0.052 0.043 0.0149 0.124 0.148 2023 7 18 60143 228.990 493.828 -22.8526 0.539 -0.133 0.055 0.045 0.0152 0.131 0.157 2023 7 19 60144 230.988 493.057 -21.8379 0.263 -0.153 0.056 0.047 0.0157 0.500 0.500 2023 7 20 60145 233.330 492.281 -21.0113 0.262 -0.151 0.056 0.048 0.0168 0.500 0.500 2023 7 21 60146 235.903 491.084 -20.4175 0.257 -0.149 0.055 0.048 0.0179 0.500 0.500 2023 7 22 60147 238.222 489.972 -20.0241 0.252 -0.149 0.054 0.047 0.0184 0.500 0.500 2023 7 23 60148 240.413 488.625 -19.7456 0.245 -0.152 0.054 0.047 0.0195 0.500 0.500 2023 7 24 60149 242.677 487.111 -19.5372 0.239 -0.156 0.055 0.047 0.0219 0.500 0.500 2023 7 25 60150 244.988 485.522 -19.3698 0.233 -0.159 0.056 0.048 0.0255 0.500 0.500 2023 7 26 60151 247.378 483.958 -19.1277 0.226 -0.160 0.059 0.048 0.0322 0.500 0.500 2023 7 27 60152 249.865 482.345 -18.7421 0.220 -0.160 0.062 0.050 0.0438 0.500 0.500 2023 7 28 60153 252.269 480.813 -18.1740 0.217 -0.162 0.066 0.053 0.0623 0.500 0.500 2023 7 29 60154 254.526 479.131 -17.4376 0.217 -0.166 0.072 0.057 0.0858 0.500 0.500 2023 7 30 60155 256.303 477.327 -16.5795 0.221 -0.174 0.081 0.066 0.1047 0.500 0.500 2023 7 31 60156 257.737 475.319 -15.6730 0.225 -0.183 0.095 0.078 0.1160 0.500 0.500 2023 8 1 60157 259.544 473.341 -14.8740 0.226 -0.189 0.115 0.096 0.1227 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 2023 6 2 60097 -108.791 -9.317 0.294 0.078 2023 6 3 60098 -109.187 -9.367 0.375 0.075 2023 6 4 60099 -109.506 -9.580 0.501 0.070 2023 6 5 60100 -109.649 -9.884 0.628 0.065 2023 6 6 60101 -109.453 -10.109 0.710 0.062 2023 6 7 60102 -108.948 -10.159 1.190 0.077 2023 6 8 60103 -108.464 -10.073 1.956 0.103 2023 6 9 60104 -108.237 -9.970 2.618 0.125 2023 6 10 60105 -108.326 -9.905 2.407 0.122 2023 6 11 60106 -108.523 -9.845 1.720 0.106 2023 6 12 60107 -108.701 -9.737 1.020 0.090 2023 6 13 60108 -108.912 -9.554 0.557 0.079 2023 6 14 60109 -109.174 -9.285 0.439 0.088 2023 6 15 60110 -109.492 -9.052 0.371 0.100 2023 6 16 60111 -109.770 -9.013 0.326 0.107 2023 6 17 60112 -109.901 -9.229 0.280 0.112 2023 6 18 60113 -109.870 -9.622 0.247 0.104 2023 6 19 60114 -109.834 -9.972 0.207 0.085 2023 6 20 60115 -109.895 -10.094 0.168 0.066 2023 6 21 60116 -110.135 -9.968 0.173 0.066 2023 6 22 60117 -110.417 -9.796 0.195 0.070 2023 6 23 60118 -110.606 -9.712 0.216 0.075 2023 6 24 60119 -110.515 -9.706 0.223 0.078 2023 6 25 60120 -110.238 -9.623 0.229 0.083 2023 6 26 60121 -110.105 -9.436 0.235 0.088 2023 6 27 60122 -110.449 -9.278 0.240 0.092 2023 6 28 60123 -111.285 -9.197 0.283 0.105 2023 6 29 60124 -112.173 -9.179 0.354 0.126 2023 6 30 60125 -112.749 -9.132 0.417 0.144 2023 7 1 60126 -113.043 -9.133 0.412 0.140 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 2023 6 2 60097 0.0916 0.0287 15.04106716272 0.00000000500 2023 6 3 60098 -0.1268 0.0289 15.04106720074 0.00000000503 2023 6 4 60099 -0.3677 0.0299 15.04106724268 0.00000000521 2023 6 5 60100 -0.5265 0.0315 15.04106727033 0.00000000548 2023 6 6 60101 -0.5304 0.0327 15.04106727101 0.00000000569 2023 6 7 60102 -0.4348 0.0324 15.04106725436 0.00000000564 2023 6 8 60103 -0.2531 0.0312 15.04106722273 0.00000000543 2023 6 9 60104 -0.0223 0.0301 15.04106718255 0.00000000524 2023 6 10 60105 0.1874 0.0295 15.04106714605 0.00000000514 2023 6 11 60106 0.2974 0.0291 15.04106712690 0.00000000507 2023 6 12 60107 0.2673 0.0286 15.04106713214 0.00000000498 2023 6 13 60108 0.1509 0.0282 15.04106715240 0.00000000491 2023 6 14 60109 -0.0520 0.0282 15.04106718772 0.00000000491 2023 6 15 60110 -0.3110 0.0284 15.04106723281 0.00000000494 2023 6 16 60111 -0.5311 0.0285 15.04106727113 0.00000000496 2023 6 17 60112 -0.6963 0.0289 15.04106729989 0.00000000503 2023 6 18 60113 -0.8189 0.0297 15.04106732123 0.00000000517 2023 6 19 60114 -0.8735 0.0305 15.04106733073 0.00000000531 2023 6 20 60115 -0.8457 0.0309 15.04106732590 0.00000000538 2023 6 21 60116 -0.7621 0.0302 15.04106731134 0.00000000526 2023 6 22 60117 -0.6812 0.0286 15.04106729726 0.00000000498 2023 6 23 60118 -0.5803 0.0275 15.04106727969 0.00000000479 2023 6 24 60119 -0.4743 0.0263 15.04106726124 0.00000000458 2023 6 25 60120 -0.3725 0.0247 15.04106724352 0.00000000430 2023 6 26 60121 -0.2695 0.0250 15.04106722559 0.00000000435 2023 6 27 60122 -0.2088 0.0253 15.04106721502 0.00000000440 2023 6 28 60123 -0.2234 0.0265 15.04106721756 0.00000000461 2023 6 29 60124 -0.3110 0.0255 15.04106723281 0.00000000444 2023 6 30 60125 -0.4450 0.0252 15.04106725614 0.00000000439 2023 7 1 60126 -0.6398 0.0242 15.04106729005 0.00000000421 4 - INFORMATION ON TIME SCALES TAI - UTC = 37 s. during period [60097-60126] No leap second introduced during period [60097-60126] 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 0 0 0 - 0 0 0 00000.00 to 00000.00 0 0 0 - 0 0 BKG bkg2023a.eoxy 65 69 4 - 49 47 8 60101.21 to 60125.27 162 166 28 - 61 110 GSFC gsf2023a.eoxy 67 112 4 12 48 54 11 60101.21 to 60125.27 92 167 32 18 31 49 IAA iaa2021a.eops 0 0 0 - 0 0 0 00000.00 to 00000.00 0 0 0 - 0 0 USNO usn2023a.eoxy 50 56 3 - 55 52 8 60101.21 to 60125.27 2956 1650 42 - 97 75 IVS * ivs2023a.eoxy 98 141 7 - 72 70 8 60101.21 to 60125.29 89 126 16 - 20 8 OPA * opa2021a.eops 0 0 0 - 0 0 0 00000.00 to 00000.00 0 0 0 - 0 0 GFZ gfz2022a.eoxy 0 0 0 - 0 0 0 00000.00 to 00000.00 0 0 0 - 0 0 VLBI Intensive GSI * gsiint2c.eopi - - 9 - - - 4 60098.33 to 60106.33 - - 21 - - - BKG * bkg2023.eopi - - 7 - - - 52 60097.79 to 60125.80 - - 36 - - - GSFC * gsf2023a.eopi - - 14 - - - 52 60097.79 to 60125.80 - - 40 - - - IAA * iaa2021a.eopi - - 22 - - - 63 60097.79 to 60125.80 - - 59 - - - USNO * usn2023a.eopi - - 12 - - - 40 60097.79 to 60125.80 - - 44 - - - OPA opa2021i.eopi - - 0 - - - 0 00000.00 to 00000.00 - - 0 - - - GPS CODE COD0OPSFIN 3 3 - 0 - - 29 60097.50 to 60125.50 23 16 - 12 - - JPL JPL0OPSFIN 9 10 - 5 - - 29 60097.50 to 60125.50 36 26 - 17 - - GFZ GFZ0OPSFIN 4 4 - 1 - - 29 60097.50 to 60125.50 37 29 - 15 - - ESA ESA0OPSFIN 6 6 - 2 - - 29 60097.50 to 60125.50 30 25 - 13 - - SIO SIO0OPSFIN 22 22 - 9 - - 29 60097.50 to 60125.50 33 31 - 17 - - EMR EMR0OPSFIN 0 0 - 0 - - 0 00000.00 to 00000.00 0 0 - 0 - - IAA gnss.res 0 0 - 0 - - 29 60097.50 to 60125.50 52 47 - 28 - - GRGS GRG0OPSFIN 259 259 - 0 - - 29 60097.50 to 60125.50 29 22 - 12 - - ASI asi*.erp 9 9 - 0 - - 13 60099.50 to 60112.50 15 32 - 42 - - MIT MIT0OPSFIN 10 10 - 1 - - 29 60097.50 to 60125.50 39 26 - 12 - - IGR * IGS0OPSRAP 9 11 - 3 - - 29 60097.50 to 60125.50 28 21 - 11 - - IGS * IGS0OPSFIN 8 11 - 1 - - 29 60097.50 to 60125.50 24 16 - 14 - - SLR MCC tg*.02 221 302 - 31 - - 30 60097.00 to 60126.00 167 183 - 224 - - IAA slr_v.dat 0 0 - 0 - - 0 00000.00 to 00000.00 0 0 - 0 - - ASI asi2022a.eops 82 113 - 21 - - 29 60097.50 to 60125.50 230 301 - 70 - - ILRS * ilrsa.eop 59 81 - 13 - - 29 60097.50 to 60125.50 161 286 - 36 - - BULLETIN A NEOS mark3.out 17 16 9 - - - 30 60097.00 to 60126.00 51 31 30 - - - To unsubscribe : http://hpiers.obspm.fr/eop-pc/products/bulletins/bulletin_registration.html