BULLETIN B 431 4 January 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 0.055 0.046 0.0199 0.132 0.059 2023 11 2 60250 273.198 266.114 11.7789 0.262 -0.010 0.060 0.046 0.0102 0.053 0.037 2023 11 3 60251 271.821 264.434 12.2712 0.288 0.008 0.059 0.044 0.0105 0.059 0.038 2023 11 4 60252 270.924 262.558 12.7260 0.302 -0.022 0.056 0.045 0.0108 0.074 0.041 2023 11 5 60253 270.153 261.321 13.0385 0.311 -0.078 0.056 0.045 0.0110 0.105 0.045 2023 11 6 60254 269.116 259.779 13.1375 0.318 -0.135 0.053 0.043 0.0132 0.139 0.050 2023 11 7 60255 268.298 258.530 13.0292 0.325 -0.179 0.053 0.044 0.0191 0.162 0.054 2023 11 8 60256 266.724 257.199 12.7909 0.338 -0.152 0.055 0.043 0.0235 0.255 0.066 2023 11 9 60257 265.207 255.588 12.4412 0.356 -0.102 0.056 0.044 0.0185 0.389 0.084 2023 11 10 60258 263.493 254.443 11.9535 0.379 -0.058 0.055 0.045 0.0201 0.495 0.099 2023 11 11 60259 261.629 252.836 11.4045 0.417 -0.051 0.056 0.045 0.0196 0.409 0.100 2023 11 12 60260 259.927 251.292 10.8944 0.450 -0.059 0.054 0.045 0.0209 0.263 0.099 2023 11 13 60261 258.249 249.725 10.5445 0.446 -0.047 0.054 0.048 0.0178 0.192 0.087 2023 11 14 60262 256.507 248.149 10.3854 0.415 -0.028 0.053 0.048 0.0287 0.137 0.069 2023 11 15 60263 254.570 246.747 10.4172 0.385 -0.037 0.054 0.047 0.0245 0.114 0.061 2023 11 16 60264 252.424 245.071 10.5996 0.358 -0.066 0.053 0.046 0.0162 0.091 0.054 2023 11 17 60265 250.380 242.975 10.8565 0.334 -0.100 0.052 0.044 0.0151 0.069 0.047 2023 11 18 60266 248.406 240.354 11.1168 0.319 -0.113 0.052 0.045 0.0148 0.063 0.046 2023 11 19 60267 246.682 238.139 11.3046 0.310 -0.111 0.052 0.049 0.0148 0.060 0.045 2023 11 20 60268 245.271 236.097 11.3015 0.306 -0.105 0.053 0.052 0.0153 0.058 0.044 2023 11 21 60269 244.498 234.480 11.1044 0.305 -0.100 0.052 0.051 0.0171 0.056 0.044 2023 11 22 60270 243.598 233.507 10.7595 0.309 -0.108 0.053 0.051 0.0193 0.062 0.049 2023 11 23 60271 241.883 232.192 10.3424 0.312 -0.117 0.053 0.051 0.0226 0.074 0.058 2023 11 24 60272 240.989 231.266 9.9187 0.311 -0.120 0.056 0.050 0.0268 0.084 0.066 2023 11 25 60273 239.692 230.833 9.5577 0.280 -0.094 0.057 0.049 0.0282 0.085 0.067 2023 11 26 60274 238.294 230.077 9.4031 0.238 -0.051 0.058 0.048 0.0280 0.082 0.065 2023 11 27 60275 236.360 229.500 9.4752 0.203 -0.006 0.063 0.046 0.0203 0.080 0.062 2023 11 28 60276 233.806 228.473 9.8338 0.189 0.033 0.062 0.046 0.0270 0.078 0.061 2023 11 29 60277 231.481 227.298 10.3599 0.245 0.044 0.061 0.046 0.0335 0.071 0.056 2023 11 30 60278 228.990 225.880 11.0065 0.328 0.039 0.058 0.045 0.0265 0.061 0.049 2023 12 1 60279 226.816 224.745 11.5719 0.410 0.025 0.056 0.046 0.0226 0.051 0.043 Preliminary extension 2023 12 2 60280 224.305 223.935 12.0098 0.446 0.002 0.053 0.045 0.0207 0.049 0.041 2023 12 3 60281 222.071 222.430 12.3212 0.449 -0.025 0.051 0.046 0.0174 0.047 0.040 2023 12 4 60282 219.794 220.875 12.4645 0.434 -0.051 0.051 0.044 0.0249 0.044 0.039 2023 12 5 60283 217.420 219.115 12.4535 0.408 -0.073 0.051 0.043 0.0155 0.043 0.037 2023 12 6 60284 214.574 217.535 12.2784 0.377 -0.077 0.047 0.041 0.0156 0.046 0.041 2023 12 7 60285 211.931 215.756 11.9784 0.342 -0.073 0.044 0.039 0.0164 0.051 0.049 2023 12 8 60286 208.774 214.118 11.6451 0.308 -0.067 0.042 0.039 0.0173 0.056 0.056 2023 12 9 60287 205.665 212.066 11.3776 0.376 -0.110 0.041 0.039 0.0182 0.062 0.064 2023 12 10 60288 203.021 210.484 11.2323 0.502 -0.183 0.041 0.039 0.0191 0.075 0.081 2023 12 11 60289 199.947 209.450 11.2123 0.625 -0.253 0.042 0.040 0.0207 0.096 0.107 2023 12 12 60290 196.878 208.255 11.3555 0.715 -0.307 0.042 0.040 0.0234 0.118 0.135 2023 12 13 60291 193.357 207.736 11.6466 0.740 -0.329 0.043 0.040 0.0261 0.132 0.153 2023 12 14 60292 189.580 206.790 12.0263 0.671 -0.305 0.043 0.040 0.0290 0.139 0.162 2023 12 15 60293 185.847 205.752 12.4150 0.476 -0.220 0.043 0.040 0.0315 0.142 0.165 2023 12 16 60294 181.992 204.710 12.6403 0.213 -0.153 0.044 0.041 0.0332 0.500 0.500 2023 12 17 60295 178.141 203.419 12.5884 0.211 -0.155 0.045 0.042 0.0314 0.500 0.500 2023 12 18 60296 174.422 202.325 12.2655 0.205 -0.155 0.047 0.044 0.0287 0.500 0.500 2023 12 19 60297 170.677 201.235 11.6981 0.196 -0.153 0.048 0.046 0.0288 0.500 0.500 2023 12 20 60298 167.474 200.621 10.9374 0.187 -0.151 0.049 0.046 0.0284 0.500 0.500 2023 12 21 60299 164.887 200.432 10.1099 0.180 -0.150 0.050 0.047 0.0284 0.500 0.500 2023 12 22 60300 162.579 200.449 9.3374 0.177 -0.149 0.051 0.047 0.0311 0.500 0.500 2023 12 23 60301 160.052 200.782 8.7131 0.178 -0.145 0.052 0.048 0.0348 0.500 0.500 2023 12 24 60302 157.583 201.302 8.3193 0.183 -0.141 0.053 0.049 0.0354 0.500 0.500 2023 12 25 60303 155.060 201.511 8.1766 0.189 -0.138 0.054 0.050 0.0392 0.500 0.500 2023 12 26 60304 151.962 201.830 8.2315 0.196 -0.137 0.055 0.051 0.0489 0.500 0.500 2023 12 27 60305 148.892 201.572 8.3827 0.204 -0.140 0.056 0.052 0.0624 0.500 0.500 2023 12 28 60306 146.072 201.391 8.5784 0.210 -0.146 0.058 0.054 0.0743 0.500 0.500 2023 12 29 60307 143.398 201.376 8.7799 0.216 -0.152 0.060 0.056 0.0878 0.500 0.500 2023 12 30 60308 141.083 201.513 8.8907 0.219 -0.155 0.064 0.058 0.0982 0.500 0.500 2023 12 31 60309 138.974 201.947 8.8494 0.220 -0.156 0.068 0.063 0.1036 0.500 0.500 2024 1 1 60310 136.893 202.227 8.6824 0.217 -0.155 0.074 0.070 0.1065 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 11 2 60250 -115.971 -7.663 0.134 0.037 2023 11 3 60251 -115.614 -7.690 0.148 0.038 2023 11 4 60252 -115.116 -7.627 0.187 0.041 2023 11 5 60253 -114.618 -7.532 0.265 0.045 2023 11 6 60254 -114.197 -7.493 0.349 0.050 2023 11 7 60255 -113.915 -7.488 0.408 0.054 2023 11 8 60256 -113.812 -7.341 0.640 0.066 2023 11 9 60257 -113.870 -7.028 0.978 0.084 2023 11 10 60258 -114.009 -6.661 1.245 0.099 2023 11 11 60259 -114.126 -6.454 1.029 0.100 2023 11 12 60260 -114.234 -6.490 0.661 0.099 2023 11 13 60261 -114.369 -6.684 0.482 0.087 2023 11 14 60262 -114.441 -6.893 0.343 0.069 2023 11 15 60263 -114.353 -7.028 0.286 0.061 2023 11 16 60264 -114.146 -7.065 0.230 0.054 2023 11 17 60265 -113.885 -7.060 0.172 0.047 2023 11 18 60266 -113.566 -7.059 0.157 0.046 2023 11 19 60267 -113.174 -7.077 0.151 0.045 2023 11 20 60268 -112.760 -7.062 0.145 0.044 2023 11 21 60269 -112.462 -6.950 0.140 0.044 2023 11 22 60270 -112.403 -6.748 0.156 0.049 2023 11 23 60271 -112.588 -6.509 0.185 0.058 2023 11 24 60272 -112.864 -6.316 0.211 0.066 2023 11 25 60273 -113.106 -6.196 0.213 0.067 2023 11 26 60274 -113.204 -6.155 0.207 0.065 2023 11 27 60275 -113.202 -6.183 0.200 0.062 2023 11 28 60276 -113.200 -6.274 0.196 0.061 2023 11 29 60277 -113.080 -6.419 0.179 0.056 2023 11 30 60278 -112.835 -6.533 0.153 0.049 2023 12 1 60279 -112.416 -6.544 0.129 0.043 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 11 2 60250 -0.4751 0.0249 15.04106726138 0.00000000433 2023 11 3 60251 -0.4853 0.0257 15.04106726315 0.00000000447 2023 11 4 60252 -0.3984 0.0245 15.04106724803 0.00000000427 2023 11 5 60253 -0.2166 0.0247 15.04106721638 0.00000000430 2023 11 6 60254 0.0089 0.0249 15.04106717712 0.00000000433 2023 11 7 60255 0.1845 0.0340 15.04106714655 0.00000000592 2023 11 8 60256 0.3035 0.0312 15.04106712584 0.00000000543 2023 11 9 60257 0.4217 0.0290 15.04106710526 0.00000000505 2023 11 10 60258 0.5310 0.0275 15.04106708623 0.00000000479 2023 11 11 60259 0.5393 0.0270 15.04106708479 0.00000000470 2023 11 12 60260 0.4326 0.0274 15.04106710336 0.00000000477 2023 11 13 60261 0.2799 0.0346 15.04106712994 0.00000000602 2023 11 14 60262 0.0710 0.0321 15.04106716631 0.00000000559 2023 11 15 60263 -0.1232 0.0273 15.04106720012 0.00000000475 2023 11 16 60264 -0.2429 0.0279 15.04106722096 0.00000000486 2023 11 17 60265 -0.2711 0.0291 15.04106722587 0.00000000507 2023 11 18 60266 -0.2328 0.0299 15.04106721920 0.00000000521 2023 11 19 60267 -0.0948 0.0253 15.04106719517 0.00000000440 2023 11 20 60268 0.1001 0.0320 15.04106716124 0.00000000557 2023 11 21 60269 0.2867 0.0298 15.04106712876 0.00000000519 2023 11 22 60270 0.3983 0.0271 15.04106710933 0.00000000472 2023 11 23 60271 0.4303 0.0257 15.04106710376 0.00000000447 2023 11 24 60272 0.4028 0.0255 15.04106710855 0.00000000444 2023 11 25 60273 0.2751 0.0260 15.04106713078 0.00000000453 2023 11 26 60274 0.0295 0.0258 15.04106717353 0.00000000449 2023 11 27 60275 -0.2229 0.0270 15.04106721747 0.00000000470 2023 11 28 60276 -0.4488 0.0284 15.04106725680 0.00000000494 2023 11 29 60277 -0.6267 0.0244 15.04106728777 0.00000000425 2023 11 30 60278 -0.6323 0.0321 15.04106728875 0.00000000559 2023 12 1 60279 -0.5075 0.0290 15.04106726702 0.00000000505 4 - INFORMATION ON TIME SCALES TAI - UTC = 37 s. during period [60250-60279] No leap second introduced during period [60250-60279] 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 BKG bkg2023a.eoxy 54 57 3 - 44 41 9 60251.25 to 60276.21 105 147 16 - 101 74 GSFC gsf2023a.eoxy 59 59 3 11 42 43 13 60251.25 to 60276.21 116 92 23 15 71 122 USNO usn2023b.eoxy 37 37 2 - 38 37 6 60251.27 to 60269.21 96 58 8 - 58 34 OPA opa2023a.eops 181 287 16 - 182 186 11 60251.25 to 60276.21 972 1602 282 - 1695 373 IVS * ivs2023a.eoxy 54 75 4 - 43 41 8 60251.27 to 60276.21 102 108 12 - 21 7 ASI asi2023a.eoxy 169 166 17 - 305 190 13 60251.25 to 60276.21 380 259 29 - 235 167 VLBI Intensive GSI * gsiint2d.eopi - - 8 - - - 8 60252.33 to 60274.33 - - 29 - - - BKG * bkg2023a.eopi - - 7 - - - 53 60250.75 to 60279.00 - - 38 - - - GSFC * gsf2023a.eopi - - 11 - - - 52 60250.75 to 60279.00 - - 43 - - - IAA * iaa2021a.eopi - - 33 - - - 53 60250.75 to 60278.75 - - 86 - - - USNO * usn2023b.eopi - - 9 - - - 45 60250.75 to 60279.00 - - 38 - - - GPS CODE COD0OPSFIN 3 3 - 0 - - 29 60250.50 to 60278.50 34 31 - 14 - - JPL JPL0OPSFIN 10 11 - 5 - - 29 60250.50 to 60278.50 53 33 - 21 - - GFZ GFZ0OPSFIN 4 4 - 1 - - 29 60250.50 to 60278.50 35 32 - 12 - - ESA ESA0OPSFIN 6 6 - 2 - - 29 60250.50 to 60278.50 39 28 - 15 - - SIO SIO0OPSFIN 23 23 - 9 - - 29 60250.50 to 60278.50 52 40 - 17 - - EMR EMR0OPSRAP 3 3 - 0 - - 29 60250.50 to 60278.50 63 56 - 17 - - IAA gnss.res 0 0 - 0 - - 28 60250.50 to 60278.50 43 59 - 22 - - GRGS GRG0OPSFIN 263 263 - 0 - - 29 60250.50 to 60278.50 34 29 - 12 - - ASI asi*.erp 9 9 - 0 - - 10 60250.50 to 60273.50 13 34 - 63 - - MIT MIT0OPSFIN 10 10 - 1 - - 29 60250.50 to 60278.50 55 40 - 15 - - IGS * IGS0OPSRAP 12 13 - 3 - - 29 60250.50 to 60278.50 33 30 - 14 - - IGS * IGS0OPSFIN 8 9 - 2 - - 29 60250.50 to 60278.50 30 27 - 14 - - SLR MCC tg*.02 186 200 - 27 - - 30 60250.00 to 60279.00 122 114 - 128 - - IAA slr_v.dat 68 77 - 5 - - 27 60250.00 to 60279.00 204 229 - 19 - - ASI asi.*.eop 93 95 - 24 - - 29 60250.50 to 60278.50 310 253 - 78 - - ILRS * ilrsa.eop 57 61 - 13 - - 29 60250.50 to 60278.50 180 194 - 22 - - BULLETIN A NEOS mark3.out 11 16 8 - - - 30 60250.00 to 60279.00 52 43 24 - - - To unsubscribe : http://hpiers.obspm.fr/eop-pc/products/bulletins/bulletin_registration.html