BULLETIN B 435 2 May 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 0.056 0.046 0.0169 0.117 0.105 2024 3 2 60371 4.476 272.298 -3.4709 0.285 -0.168 0.060 0.046 0.0121 0.051 0.037 2024 3 3 60372 3.450 275.467 -3.4856 0.298 -0.206 0.057 0.046 0.0115 0.054 0.040 2024 3 4 60373 2.177 278.176 -3.3053 0.306 -0.245 0.055 0.046 0.0119 0.059 0.044 2024 3 5 60374 0.669 280.467 -2.9650 0.309 -0.272 0.054 0.046 0.0130 0.062 0.046 2024 3 6 60375 -0.720 282.454 -2.6367 0.295 -0.247 0.054 0.046 0.0142 0.072 0.055 2024 3 7 60376 -1.802 284.170 -2.5078 0.277 -0.201 0.057 0.046 0.0154 0.088 0.068 2024 3 8 60377 -2.745 286.075 -2.6821 0.262 -0.148 0.055 0.048 0.0162 0.102 0.079 2024 3 9 60378 -3.640 288.394 -3.2109 0.287 -0.118 0.055 0.047 0.0152 0.110 0.088 2024 3 10 60379 -4.647 290.852 -4.1262 0.327 -0.100 0.058 0.047 0.0128 0.122 0.102 2024 3 11 60380 -6.033 293.393 -5.3380 0.358 -0.078 0.060 0.046 0.0171 0.135 0.118 2024 3 12 60381 -7.194 295.662 -6.6209 0.366 -0.045 0.060 0.044 0.0191 0.144 0.129 2024 3 13 60382 -7.973 297.878 -7.7498 0.278 0.042 0.059 0.044 0.0212 0.191 0.178 2024 3 14 60383 -8.533 299.994 -8.5733 0.164 0.137 0.058 0.044 0.0234 0.267 0.257 2024 3 15 60384 -9.084 302.201 -9.0574 0.066 0.210 0.055 0.046 0.0252 0.334 0.327 2024 3 16 60385 -10.197 304.797 -9.2348 0.094 0.173 0.055 0.046 0.0242 0.318 0.311 2024 3 17 60386 -11.357 307.140 -9.1921 0.197 0.069 0.057 0.045 0.0218 0.256 0.247 2024 3 18 60387 -12.389 309.179 -9.1031 0.311 -0.048 0.058 0.047 0.0197 0.186 0.175 2024 3 19 60388 -13.079 311.368 -9.0764 0.407 -0.152 0.060 0.047 0.0189 0.136 0.124 2024 3 20 60389 -13.421 313.052 -9.1683 0.378 -0.162 0.063 0.048 0.0198 0.119 0.108 2024 3 21 60390 -12.837 314.752 -9.4079 0.302 -0.130 0.062 0.049 0.0188 0.103 0.093 2024 3 22 60391 -12.081 316.461 -9.7646 0.225 -0.083 0.061 0.049 0.0189 0.089 0.080 2024 3 23 60392 -11.308 318.648 -10.2529 0.228 -0.034 0.060 0.049 0.0207 0.081 0.073 2024 3 24 60393 -10.855 321.765 -10.8928 0.277 0.008 0.058 0.050 0.0155 0.069 0.063 2024 3 25 60394 -10.696 324.723 -11.6470 0.333 0.035 0.057 0.048 0.0167 0.056 0.052 2024 3 26 60395 -11.056 327.473 -12.4535 0.375 0.036 0.055 0.046 0.0181 0.048 0.045 2024 3 27 60396 -11.460 330.102 -13.1889 0.365 -0.016 0.053 0.045 0.0149 0.046 0.042 2024 3 28 60397 -12.222 332.871 -13.7765 0.335 -0.088 0.053 0.046 0.0136 0.045 0.039 2024 3 29 60398 -12.670 335.116 -14.1822 0.321 -0.134 0.051 0.045 0.0132 0.050 0.041 2024 3 30 60399 -12.674 336.972 -14.4031 0.324 -0.154 0.051 0.045 0.0134 0.064 0.051 2024 3 31 60400 -12.901 338.936 -14.4278 0.334 -0.159 0.050 0.048 0.0134 0.087 0.066 2024 4 1 60401 -13.269 340.800 -14.2802 0.348 -0.153 0.051 0.046 0.0145 0.114 0.083 Preliminary extension 2024 4 2 60402 -13.398 342.432 -14.0105 0.361 -0.140 0.054 0.047 0.0145 0.132 0.095 2024 4 3 60403 -12.589 344.306 -13.7054 0.371 -0.126 0.050 0.043 0.0149 0.142 0.101 2024 4 4 60404 -11.564 346.458 -13.5379 0.370 -0.118 0.047 0.039 0.0169 0.213 0.149 2024 4 5 60405 -10.457 348.825 -13.6745 0.364 -0.108 0.046 0.037 0.0202 0.306 0.212 2024 4 6 60406 -9.642 351.289 -14.1589 0.352 -0.096 0.045 0.036 0.0256 0.575 0.394 2024 4 7 60407 -9.246 353.841 -14.9236 0.336 -0.079 0.045 0.035 0.0334 1.110 0.756 2024 4 8 60408 -9.075 356.347 -15.8636 0.318 -0.061 0.044 0.035 0.0454 1.728 1.173 2024 4 9 60409 -9.238 358.869 -16.7896 0.298 -0.040 0.044 0.035 0.0553 2.181 1.480 2024 4 10 60410 -8.745 360.679 -17.4842 0.281 -0.012 0.044 0.036 0.0435 1.833 1.252 2024 4 11 60411 -7.982 362.596 -17.8545 0.265 0.015 0.044 0.036 0.0299 1.179 0.823 2024 4 12 60412 -7.458 364.436 -17.9444 0.248 0.032 0.045 0.037 0.0225 0.632 0.463 2024 4 13 60413 -6.914 365.994 -17.8166 0.260 -0.009 0.046 0.038 0.0194 0.454 0.351 2024 4 14 60414 -6.519 367.622 -17.5333 0.273 -0.071 0.047 0.041 0.0182 0.336 0.280 2024 4 15 60415 -5.998 369.279 -17.2082 0.255 -0.112 0.049 0.044 0.0195 0.239 0.223 2024 4 16 60416 -5.003 371.364 -16.9027 0.184 -0.106 0.051 0.045 0.0213 0.187 0.191 2024 4 17 60417 -3.738 373.916 -16.6751 0.097 -0.034 0.053 0.046 0.0203 0.500 0.500 2024 4 18 60418 -2.976 376.671 -16.6211 0.105 -0.036 0.053 0.046 0.0193 0.500 0.500 2024 4 19 60419 -2.484 379.004 -16.7706 0.108 -0.035 0.053 0.047 0.0196 0.500 0.500 2024 4 20 60420 -2.068 381.512 -17.0937 0.105 -0.034 0.053 0.047 0.0215 0.500 0.500 2024 4 21 60421 -2.241 384.132 -17.5198 0.097 -0.036 0.053 0.047 0.0270 0.500 0.500 2024 4 22 60422 -2.302 386.331 -18.0116 0.085 -0.040 0.054 0.047 0.0374 0.500 0.500 2024 4 23 60423 -1.726 388.503 -18.5057 0.074 -0.044 0.055 0.049 0.0474 0.500 0.500 2024 4 24 60424 -0.944 390.686 -18.9101 0.066 -0.046 0.057 0.050 0.0395 0.500 0.500 2024 4 25 60425 0.440 393.148 -19.1882 0.062 -0.044 0.059 0.052 0.0305 0.500 0.500 2024 4 26 60426 1.281 395.846 -19.2587 0.061 -0.038 0.061 0.054 0.0249 0.500 0.500 2024 4 27 60427 1.511 398.145 -19.0970 0.062 -0.032 0.065 0.058 0.0223 0.500 0.500 2024 4 28 60428 1.687 400.354 -18.7769 0.066 -0.031 0.070 0.063 0.0234 0.500 0.500 2024 4 29 60429 2.229 402.040 -18.3900 0.071 -0.034 0.078 0.073 0.0276 0.500 0.500 2024 4 30 60430 2.991 403.392 -18.0359 0.077 -0.042 0.090 0.088 0.0348 0.500 0.500 2024 5 1 60431 4.068 404.814 -17.8041 0.082 -0.051 0.106 0.109 0.0438 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 2024 3 2 60371 -110.103 -7.902 0.128 0.037 2024 3 3 60372 -110.086 -8.323 0.136 0.040 2024 3 4 60373 -109.880 -8.497 0.148 0.044 2024 3 5 60374 -109.750 -8.426 0.157 0.046 2024 3 6 60375 -109.970 -8.376 0.181 0.055 2024 3 7 60376 -110.285 -8.569 0.221 0.068 2024 3 8 60377 -110.199 -8.789 0.255 0.079 2024 3 9 60378 -109.596 -8.699 0.276 0.088 2024 3 10 60379 -109.045 -8.306 0.306 0.102 2024 3 11 60380 -108.986 -7.976 0.339 0.118 2024 3 12 60381 -109.331 -7.921 0.362 0.129 2024 3 13 60382 -109.967 -7.957 0.479 0.178 2024 3 14 60383 -110.598 -7.980 0.670 0.257 2024 3 15 60384 -111.042 -8.106 0.839 0.327 2024 3 16 60385 -110.928 -8.517 0.800 0.311 2024 3 17 60386 -110.419 -9.028 0.643 0.247 2024 3 18 60387 -109.844 -9.354 0.467 0.175 2024 3 19 60388 -109.361 -9.434 0.341 0.124 2024 3 20 60389 -109.179 -9.339 0.299 0.108 2024 3 21 60390 -109.087 -9.212 0.259 0.093 2024 3 22 60391 -109.068 -9.009 0.224 0.080 2024 3 23 60392 -108.979 -8.664 0.203 0.073 2024 3 24 60393 -108.840 -8.286 0.173 0.063 2024 3 25 60394 -108.670 -8.098 0.142 0.052 2024 3 26 60395 -108.520 -8.207 0.120 0.045 2024 3 27 60396 -108.540 -8.532 0.116 0.042 2024 3 28 60397 -108.653 -8.883 0.114 0.039 2024 3 29 60398 -108.719 -9.175 0.127 0.041 2024 3 30 60399 -108.681 -9.450 0.162 0.051 2024 3 31 60400 -108.509 -9.698 0.220 0.066 2024 4 1 60401 -108.203 -9.814 0.286 0.083 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 2024 3 2 60371 0.0747 0.0241 15.04106716567 0.00000000420 2024 3 3 60372 -0.0727 0.0239 15.04106719133 0.00000000416 2024 3 4 60373 -0.2711 0.0240 15.04106722587 0.00000000418 2024 3 5 60374 -0.3660 0.0242 15.04106724239 0.00000000421 2024 3 6 60375 -0.2618 0.0249 15.04106722425 0.00000000433 2024 3 7 60376 0.0078 0.0247 15.04106717731 0.00000000430 2024 3 8 60377 0.3503 0.0245 15.04106711769 0.00000000427 2024 3 9 60378 0.7272 0.0246 15.04106705207 0.00000000428 2024 3 10 60379 1.0873 0.0245 15.04106698939 0.00000000427 2024 3 11 60380 1.2855 0.0248 15.04106695488 0.00000000432 2024 3 12 60381 1.2413 0.0251 15.04106696258 0.00000000437 2024 3 13 60382 0.9938 0.0255 15.04106700566 0.00000000444 2024 3 14 60383 0.6508 0.0257 15.04106706537 0.00000000447 2024 3 15 60384 0.3185 0.0266 15.04106712322 0.00000000463 2024 3 16 60385 0.0503 0.0269 15.04106716991 0.00000000468 2024 3 17 60386 -0.0973 0.0270 15.04106719561 0.00000000470 2024 3 18 60387 -0.0759 0.0345 15.04106719188 0.00000000601 2024 3 19 60388 0.0285 0.0309 15.04106717371 0.00000000538 2024 3 20 60389 0.1648 0.0281 15.04106714998 0.00000000489 2024 3 21 60390 0.3054 0.0268 15.04106712550 0.00000000467 2024 3 22 60391 0.4223 0.0267 15.04106710515 0.00000000465 2024 3 23 60392 0.5604 0.0271 15.04106708111 0.00000000472 2024 3 24 60393 0.7014 0.0275 15.04106705657 0.00000000479 2024 3 25 60394 0.7923 0.0267 15.04106704074 0.00000000465 2024 3 26 60395 0.7964 0.0258 15.04106704003 0.00000000449 2024 3 27 60396 0.6802 0.0256 15.04106706026 0.00000000446 2024 3 28 60397 0.5001 0.0257 15.04106709161 0.00000000447 2024 3 29 60398 0.3102 0.0251 15.04106712467 0.00000000437 2024 3 30 60399 0.1210 0.0245 15.04106715761 0.00000000427 2024 3 31 60400 -0.0690 0.0240 15.04106719068 0.00000000418 2024 4 1 60401 -0.2209 0.0238 15.04106721713 0.00000000414 4 - INFORMATION ON TIME SCALES TAI - UTC = 37 s. during period [60371-60401] No leap second introduced during period [60371-60401] 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 69 75 3 - 58 60 8 60374.21 to 60397.27 85 127 25 - 71 29 GSFC gsf2023a.eoxy 55 53 3 8 44 44 11 60374.21 to 60397.27 94 143 22 14 148 52 IAA iaa2021a.eops 154 157 8 - 108 104 8 60374.21 to 60397.27 552 441 52 - 398 362 USNO usn2023c.eoxy 53 49 2 - 48 48 8 60374.21 to 60397.27 70 108 27 - 30 48 OPA opa2024a.eops 222 307 33 - 2649 6243 4 60388.21 to 60397.27 469 1104 44 - 697 597 IVS * ivs2023a.eoxy 73 96 4 - 55 56 8 60374.21 to 60397.27 89 75 21 - 12 9 ASI asi2023a.eoxy 168 219 19 - 223 207 8 60374.21 to 60397.27 150 271 30 - 123 244 VLBI Intensive GSI * gsiint2d.eopi - - 8 - - - 8 60371.33 to 60393.33 - - 27 - - - BKG * bkg2023a.eopi - - 7 - - - 60 60371.25 to 60397.75 - - 208 - - - GSFC * gsf2023a.eopi - - 17 - - - 60 60371.25 to 60397.75 - - 101 - - - IAA * iaa2021a.eopi - - 38 - - - 62 60371.25 to 60397.75 - - 86 - - - USNO * usn2023c.eopi - - 12 - - - 45 60371.33 to 60399.75 - - 80 - - - GPS CODE COD0OPSFIN 3 3 - 0 - - 30 60371.50 to 60400.50 37 33 - 13 - - JPL JPL0OPSFIN 9 10 - 8 - - 30 60371.50 to 60400.50 60 49 - 21 - - GFZ GFZ0OPSFIN 4 4 - 1 - - 30 60371.50 to 60400.50 42 34 - 14 - - ESA ESA0OPSFIN 5 6 - 3 - - 30 60371.50 to 60400.50 38 34 - 13 - - SIO SIO0OPSFIN 26 24 - 13 - - 30 60371.50 to 60400.50 57 42 - 25 - - EMR EMR0OPSRAP 4 4 - 1 - - 30 60371.50 to 60400.50 60 58 - 13 - - IAA gnss.res 0 0 - 0 - - 30 60371.50 to 60400.50 68 81 - 29 - - GRGS GRG0OPSFIN 264 264 - 0 - - 30 60371.50 to 60400.50 33 31 - 14 - - ASI asi*.erp 10 10 - 0 - - 22 60379.50 to 60400.50 41 31 - 116 - - MIT MIT0OPSFIN 11 10 - 1 - - 30 60371.50 to 60400.50 54 45 - 19 - - IGS * IGS0OPSRAP 10 12 - 3 - - 30 60371.50 to 60400.50 36 39 - 16 - - IGS * IGS0OPSFIN 8 9 - 2 - - 30 60371.50 to 60400.50 33 28 - 12 - - SLR MCC tg*.02 271 250 - 34 - - 31 60371.00 to 60401.00 121 256 - 148 - - IAA slr_v.dat 85 85 - 5 - - 30 60371.00 to 60401.00 205 222 - 24 - - ASI asi.*.eop 65 62 - 14 - - 30 60371.50 to 60400.50 205 192 - 67 - - ILRS * ilrsa.eop 65 58 - 9 - - 30 60371.50 to 60400.50 184 183 - 29 - - BULLETIN A NEOS mark3.out 24 32 7 - - - 31 60371.00 to 60401.00 31 45 18 - - - To unsubscribe : http://hpiers.obspm.fr/eop-pc/products/bulletins/bulletin_registration.html