BULLETIN B 432 12 February 2024 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 0.052 0.046 0.0253 0.063 0.081 2023 12 2 60280 224.305 223.935 12.0098 0.371 -0.012 0.053 0.045 0.0207 0.091 0.225 2023 12 3 60281 222.071 222.430 12.3212 0.295 -0.054 0.051 0.046 0.0174 0.111 0.318 2023 12 4 60282 219.794 220.875 12.4645 0.312 -0.075 0.051 0.044 0.0249 0.101 0.280 2023 12 5 60283 217.420 219.115 12.4535 0.385 -0.078 0.051 0.043 0.0155 0.076 0.181 2023 12 6 60284 214.571 217.536 12.2758 0.396 -0.077 0.051 0.043 0.0184 0.069 0.146 2023 12 7 60285 211.936 215.746 11.9773 0.367 -0.073 0.048 0.045 0.0180 0.053 0.117 2023 12 8 60286 208.772 214.113 11.6481 0.312 -0.067 0.048 0.044 0.0185 0.061 0.088 2023 12 9 60287 205.670 212.065 11.3851 0.299 -0.052 0.048 0.045 0.0191 0.059 0.078 2023 12 10 60288 203.013 210.473 11.2396 0.309 -0.035 0.050 0.048 0.0182 0.056 0.051 2023 12 11 60289 199.952 209.451 11.2226 0.325 -0.027 0.050 0.049 0.0191 0.057 0.050 2023 12 12 60290 196.871 208.244 11.3677 0.344 -0.032 0.052 0.051 0.0210 0.058 0.054 2023 12 13 60291 193.357 207.726 11.6597 0.354 -0.083 0.053 0.051 0.0222 0.058 0.052 2023 12 14 60292 189.583 206.787 12.0425 0.359 -0.148 0.053 0.049 0.0240 0.059 0.048 2023 12 15 60293 185.845 205.745 12.4339 0.361 -0.207 0.052 0.047 0.0229 0.060 0.048 2023 12 16 60294 181.994 204.722 12.6576 0.351 -0.215 0.051 0.046 0.0303 0.058 0.047 2023 12 17 60295 178.144 203.403 12.6038 0.335 -0.191 0.050 0.045 0.0339 0.053 0.043 2023 12 18 60296 174.426 202.336 12.2851 0.321 -0.154 0.050 0.045 0.0156 0.047 0.039 2023 12 19 60297 170.661 201.214 11.7121 0.313 -0.115 0.050 0.045 0.0258 0.044 0.037 2023 12 20 60298 167.464 200.619 10.9464 0.322 -0.088 0.049 0.044 0.0310 0.047 0.040 2023 12 21 60299 164.895 200.433 10.1277 0.338 -0.069 0.051 0.045 0.0224 0.053 0.046 2023 12 22 60300 162.559 200.456 9.3539 0.358 -0.053 0.051 0.045 0.0508 0.054 0.047 2023 12 23 60301 160.059 200.780 8.7321 0.379 -0.043 0.051 0.045 0.0305 0.056 0.047 2023 12 24 60302 157.580 201.308 8.3399 0.395 -0.040 0.052 0.045 0.0281 0.059 0.048 2023 12 25 60303 155.062 201.492 8.1989 0.401 -0.045 0.054 0.046 0.0289 0.063 0.049 2023 12 26 60304 151.948 201.842 8.2629 0.391 -0.061 0.057 0.046 0.0296 0.066 0.049 2023 12 27 60305 148.900 201.561 8.4167 0.362 -0.088 0.058 0.048 0.0272 0.067 0.050 2023 12 28 60306 146.049 201.377 8.6182 0.306 -0.129 0.057 0.048 0.0307 0.068 0.050 2023 12 29 60307 143.421 201.375 8.8430 0.215 -0.186 0.058 0.048 0.0337 0.067 0.050 2023 12 30 60308 141.056 201.504 8.9829 0.180 -0.217 0.057 0.046 0.0324 0.067 0.050 2023 12 31 60309 138.979 201.930 8.9356 0.216 -0.212 0.058 0.044 0.0288 0.067 0.050 2024 1 1 60310 136.894 202.185 8.7572 0.283 -0.183 0.056 0.043 0.0238 0.066 0.050 Preliminary extension 2024 1 2 60311 134.917 202.555 8.4757 0.353 -0.139 0.054 0.042 0.0205 0.066 0.050 2024 1 3 60312 133.109 203.087 8.1157 0.396 -0.091 0.053 0.041 0.0178 0.066 0.050 2024 1 4 60313 131.582 204.005 7.7008 0.336 -0.050 0.052 0.041 0.0158 0.064 0.050 2024 1 5 60314 130.046 205.151 7.2587 0.253 -0.019 0.051 0.041 0.0140 0.063 0.049 2024 1 6 60315 127.924 206.114 6.8909 0.214 -0.025 0.052 0.042 0.0121 0.061 0.048 2024 1 7 60316 125.599 206.334 6.6966 0.211 -0.059 0.053 0.044 0.0106 0.056 0.046 2024 1 8 60317 123.296 206.642 6.7475 0.224 -0.105 0.053 0.045 0.0100 0.052 0.045 2024 1 9 60318 121.192 206.575 7.0360 0.244 -0.151 0.056 0.044 0.0100 0.048 0.044 2024 1 10 60319 119.280 206.262 7.4355 0.243 -0.173 0.054 0.043 0.0106 0.051 0.050 2024 1 11 60320 117.602 206.432 7.8271 0.234 -0.181 0.054 0.044 0.0116 0.057 0.061 2024 1 12 60321 115.879 206.702 8.1417 0.223 -0.179 0.056 0.044 0.0120 0.063 0.070 2024 1 13 60322 114.245 207.034 8.2712 0.208 -0.160 0.059 0.044 0.0122 0.063 0.071 2024 1 14 60323 113.364 207.788 8.1404 0.193 -0.130 0.055 0.041 0.0131 0.061 0.068 2024 1 15 60324 112.215 208.999 7.7574 0.181 -0.096 0.052 0.039 0.0149 0.060 0.065 2024 1 16 60325 110.985 209.766 7.1940 0.177 -0.064 0.051 0.037 0.0177 0.058 0.063 2024 1 17 60326 109.720 210.712 6.5475 0.192 -0.043 0.050 0.037 0.0221 0.058 0.063 2024 1 18 60327 107.639 211.908 5.9850 0.215 -0.029 0.049 0.036 0.0263 0.059 0.063 2024 1 19 60328 105.465 212.786 5.6476 0.240 -0.020 0.048 0.036 0.0284 0.060 0.063 2024 1 20 60329 102.673 213.979 5.5511 0.253 -0.010 0.048 0.036 0.0326 0.061 0.064 2024 1 21 60330 99.194 214.511 5.6536 0.259 -0.003 0.046 0.036 0.0379 0.062 0.066 2024 1 22 60331 95.612 214.871 5.8943 0.265 -0.003 0.045 0.036 0.0399 0.064 0.068 2024 1 23 60332 92.135 215.256 6.1967 0.273 -0.013 0.045 0.037 0.0407 0.065 0.069 2024 1 24 60333 88.468 215.322 6.4919 0.298 -0.048 0.045 0.037 0.0439 0.071 0.078 2024 1 25 60334 85.011 215.425 6.7036 0.326 -0.091 0.045 0.037 0.0522 0.081 0.091 2024 1 26 60335 82.038 215.775 6.7801 0.348 -0.131 0.046 0.038 0.0614 0.088 0.102 2024 1 27 60336 79.118 216.530 6.7177 0.399 -0.167 0.048 0.039 0.0708 0.102 0.117 2024 1 28 60337 76.210 217.108 6.4572 0.437 -0.186 0.051 0.042 0.0730 0.122 0.138 2024 1 29 60338 73.679 217.509 6.0009 0.415 -0.176 0.054 0.045 0.0829 0.137 0.154 2024 1 30 60339 70.952 217.941 5.4122 0.303 -0.127 0.055 0.046 0.1113 0.146 0.163 2024 1 31 60340 68.291 218.406 4.7810 0.164 -0.169 0.056 0.048 0.1449 0.500 0.500 2024 2 1 60341 65.598 219.312 4.1829 0.157 -0.172 0.056 0.049 0.1356 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 12 2 60280 -112.137 -6.481 0.228 0.225 2023 12 3 60281 -111.909 -6.410 0.278 0.318 2023 12 4 60282 -111.526 -6.362 0.254 0.280 2023 12 5 60283 -111.142 -6.298 0.192 0.181 2023 12 6 60284 -111.087 -6.142 0.174 0.146 2023 12 7 60285 -111.334 -5.879 0.134 0.117 2023 12 8 60286 -111.833 -5.608 0.152 0.088 2023 12 9 60287 -112.299 -5.455 0.149 0.078 2023 12 10 60288 -112.615 -5.487 0.140 0.051 2023 12 11 60289 -112.730 -5.675 0.142 0.050 2023 12 12 60290 -112.676 -5.935 0.146 0.054 2023 12 13 60291 -112.524 -6.202 0.146 0.052 2023 12 14 60292 -112.273 -6.363 0.148 0.048 2023 12 15 60293 -111.930 -6.367 0.150 0.048 2023 12 16 60294 -111.598 -6.234 0.145 0.047 2023 12 17 60295 -111.370 -6.091 0.132 0.043 2023 12 18 60296 -111.282 -6.014 0.119 0.039 2023 12 19 60297 -111.310 -5.968 0.110 0.037 2023 12 20 60298 -111.392 -5.892 0.118 0.040 2023 12 21 60299 -111.528 -5.749 0.132 0.046 2023 12 22 60300 -111.691 -5.567 0.137 0.047 2023 12 23 60301 -111.813 -5.402 0.141 0.047 2023 12 24 60302 -111.797 -5.323 0.148 0.048 2023 12 25 60303 -111.605 -5.389 0.157 0.049 2023 12 26 60304 -111.345 -5.604 0.165 0.049 2023 12 27 60305 -111.199 -5.883 0.169 0.050 2023 12 28 60306 -111.234 -6.083 0.171 0.050 2023 12 29 60307 -111.373 -6.128 0.169 0.050 2023 12 30 60308 -111.268 -6.021 0.168 0.050 2023 12 31 60309 -110.895 -5.878 0.167 0.050 2024 1 1 60310 -110.452 -5.772 0.166 0.050 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 12 2 60280 -0.3739 0.0275 15.04106724376 0.00000000479 2023 12 3 60281 -0.2343 0.0266 15.04106721946 0.00000000463 2023 12 4 60282 -0.0674 0.0245 15.04106719040 0.00000000427 2023 12 5 60283 0.0998 0.0235 15.04106716130 0.00000000409 2023 12 6 60284 0.2429 0.0225 15.04106713638 0.00000000392 2023 12 7 60285 0.3303 0.0217 15.04106712117 0.00000000378 2023 12 8 60286 0.3127 0.0213 15.04106712423 0.00000000371 2023 12 9 60287 0.2114 0.0210 15.04106714187 0.00000000366 2023 12 10 60288 0.0789 0.0213 15.04106716493 0.00000000371 2023 12 11 60289 -0.0622 0.0218 15.04106718950 0.00000000380 2023 12 12 60290 -0.2260 0.0220 15.04106721801 0.00000000383 2023 12 13 60291 -0.3512 0.0222 15.04106723981 0.00000000386 2023 12 14 60292 -0.4003 0.0226 15.04106724836 0.00000000393 2023 12 15 60293 -0.3364 0.0245 15.04106723723 0.00000000427 2023 12 16 60294 -0.0987 0.0240 15.04106719585 0.00000000418 2023 12 17 60295 0.1970 0.0237 15.04106714438 0.00000000413 2023 12 18 60296 0.4531 0.0237 15.04106709979 0.00000000413 2023 12 19 60297 0.6818 0.0240 15.04106705998 0.00000000418 2023 12 20 60298 0.8204 0.0234 15.04106703585 0.00000000407 2023 12 21 60299 0.8182 0.0233 15.04106703623 0.00000000406 2023 12 22 60300 0.7030 0.0233 15.04106705629 0.00000000406 2023 12 23 60301 0.5155 0.0232 15.04106708893 0.00000000404 2023 12 24 60302 0.2658 0.0238 15.04106713240 0.00000000414 2023 12 25 60303 0.0262 0.0243 15.04106717411 0.00000000423 2023 12 26 60304 -0.1336 0.0253 15.04106720193 0.00000000440 2023 12 27 60305 -0.1998 0.0258 15.04106721345 0.00000000449 2023 12 28 60306 -0.2087 0.0263 15.04106721500 0.00000000458 2023 12 29 60307 -0.1906 0.0260 15.04106721185 0.00000000453 2023 12 30 60308 -0.0628 0.0256 15.04106718960 0.00000000446 2023 12 31 60309 0.1241 0.0254 15.04106715707 0.00000000442 2024 1 1 60310 0.2270 0.0327 15.04106713915 0.00000000569 4 - INFORMATION ON TIME SCALES TAI - UTC = 37 s. during period [60280-60310] No leap second introduced during period [60280-60310] 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 NaN NaN - 0 0 0 00000.00 to 00000.00 0 0 0 - 0 0 BKG bkg2023a.eoxy 65 61 3 - 40 41 14 60280.29 to 60307.27 264 162 25 - 123 53 GSFC gsf2023a.eoxy 61 56 3 10 41 41 15 60280.29 to 60307.27 93 240 24 11 97 64 IAA iaa2021a.eops 98 95 5 - 75 71 6 60286.27 to 60306.21 674 440 35 - 515 463 USNO usn2023b.eoxy 0 NaN NaN - 0 0 0 00000.00 to 00000.00 0 0 0 - 0 0 OPA opa2023a.eops 3621 3677 15 - 186 557 13 60283.21 to 60307.27 4098 2046 303 - 119 265 IVS * ivs2023a.eoxy 53 63 4 - 34 32 8 60283.22 to 60307.27 116 111 19 - 7 4 GFZ gfz2022a.eoxy 0 NaN NaN - 0 0 0 00000.00 to 00000.00 0 0 0 - 0 0 ASI asi2023a.eoxy 173 159 14 - 181 185 14 60280.29 to 60307.27 622 321 35 - 285 173 VLBI Intensive GSI * gsiint2d.eopi - - 11 - - - 10 60280.33 to 60309.33 - - 30 - - - BKG * bkg2023a.eopi - - 8 - - - 58 60280.25 to 60309.33 - - 49 - - - GSFC * gsf2023a.eopi - - 14 - - - 58 60280.25 to 60309.33 - - 54 - - - IAA * iaa2021a.eopi - - 27 - - - 60 60280.31 to 60309.33 - - 66 - - - USNO * usn2023b.eopi - - 9 - - - 4 60280.33 to 60283.75 - - 29 - - - OPA opa2021i.eopi - - NaN - - - 0 00000.00 to 00000.00 - - 0 - - - GPS CODE COD0OPSFIN 3 3 - 0 - - 30 60280.50 to 60309.50 32 31 - 11 - - JPL JPL0OPSFIN 10 11 - 5 - - 30 60280.50 to 60309.50 44 41 - 14 - - GFZ GFZ0OPSFIN 4 4 - 1 - - 30 60280.50 to 60309.50 33 31 - 11 - - ESA ESA0OPSFIN 6 6 - 2 - - 30 60280.50 to 60309.50 33 29 - 10 - - SIO SIO0OPSFIN 23 22 - 9 - - 30 60280.50 to 60309.50 45 42 - 21 - - EMR EMR0OPSRAP 3 3 - 0 - - 30 60280.50 to 60309.50 54 45 - 10 - - IAA gnss.res 0 0 - 0 - - 30 60280.50 to 60309.50 61 48 - 25 - - GRGS GRG0OPSFIN 261 261 - 0 - - 30 60280.50 to 60309.50 33 28 - 11 - - ASI asi*.erp 9 9 - 0 - - 7 60302.50 to 60308.50 20 47 - 169 - - MIT MIT0OPSFIN 10 10 - 1 - - 30 60280.50 to 60309.50 43 44 - 14 - - IGS * IGS0OPSRAP 9 14 - 2 - - 30 60280.50 to 60309.50 35 27 - 12 - - IGS * IGS0OPSFIN 7 8 - 1 - - 30 60280.50 to 60309.50 26 25 - 9 - - SLR MCC tg*.02 227 260 - 38 - - 31 60280.00 to 60310.00 142 253 - 102 - - IAA slr_v.dat 90 104 - 5 - - 30 60280.00 to 60310.00 185 461 - 35 - - ASI asi.*.eop 2930 3039 - 20 - - 30 60280.50 to 60309.50 2505 2050 - 84 - - ILRS * ilrsa.eop 77 80 - 17 - - 30 60280.50 to 60309.50 199 246 - 40 - - BULLETIN A NEOS mark3.out 28 26 8 - - - 31 60280.00 to 60310.00 37 65 25 - - - To unsubscribe : http://hpiers.obspm.fr/eop-pc/products/bulletins/bulletin_registration.html