BULLETIN B 462 1 August 2026 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 C04 solution - consistent with ITRF 2020. 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 0.041 0.041 0.0267 0.428 0.478 2026 6 2 61193 183.202 407.799 17.7755 0.379 -0.155 0.039 0.044 0.0276 0.482 0.535 2026 6 3 61194 184.536 408.215 17.7986 0.387 -0.210 0.040 0.044 0.0356 0.483 0.536 2026 6 4 61195 185.442 408.299 17.7335 0.404 -0.274 0.042 0.043 0.0372 0.544 0.641 2026 6 5 61196 185.871 408.329 17.4993 0.423 -0.333 0.042 0.046 0.0489 0.557 0.663 2026 6 6 61197 186.548 408.026 17.0632 0.438 -0.345 0.041 0.045 0.0230 0.557 0.663 2026 6 7 61198 186.868 407.684 16.4490 0.447 -0.328 0.042 0.046 0.0130 0.511 0.606 2026 6 8 61199 187.112 406.981 15.6603 0.451 -0.304 0.041 0.044 0.0132 0.195 0.207 2026 6 9 61200 187.379 406.533 14.7513 0.447 -0.286 0.039 0.043 0.0188 0.194 0.206 2026 6 10 61201 187.833 405.838 13.7893 0.429 -0.318 0.039 0.042 0.0234 0.200 0.213 2026 6 11 61202 188.287 405.116 12.9053 0.405 -0.361 0.044 0.042 0.0313 0.689 0.798 2026 6 12 61203 189.151 404.013 12.2295 0.378 -0.391 0.044 0.042 0.0514 0.794 0.923 2026 6 13 61204 190.389 403.260 11.8816 0.358 -0.343 0.042 0.042 0.0250 0.794 0.924 2026 6 14 61205 191.485 402.605 11.8117 0.342 -0.251 0.042 0.041 0.0136 0.708 0.824 2026 6 15 61206 192.486 402.143 11.9519 0.330 -0.153 0.042 0.041 0.0124 0.111 0.130 2026 6 16 61207 193.386 401.682 12.1361 0.322 -0.070 0.041 0.041 0.0154 0.109 0.127 2026 6 17 61208 193.962 401.162 12.2973 0.317 -0.065 0.041 0.041 0.0189 0.114 0.132 2026 6 18 61209 194.423 400.452 12.3275 0.317 -0.096 0.041 0.040 0.0282 0.550 0.511 2026 6 19 61210 195.397 399.759 12.2265 0.321 -0.141 0.040 0.042 0.0506 0.642 0.590 2026 6 20 61211 196.343 399.199 11.9962 0.334 -0.182 0.042 0.040 0.0237 0.642 0.591 2026 6 21 61212 196.926 398.391 11.6715 0.353 -0.217 0.044 0.041 0.0134 0.593 0.556 2026 6 22 61213 197.536 397.331 11.3647 0.372 -0.244 0.042 0.041 0.0143 0.264 0.319 2026 6 23 61214 198.885 396.205 11.1512 0.391 -0.260 0.042 0.041 0.0231 0.263 0.318 2026 6 24 61215 200.414 395.335 11.1155 0.403 -0.240 0.041 0.039 0.0299 0.265 0.320 2026 6 25 61216 201.653 394.452 11.2706 0.411 -0.209 0.042 0.040 0.0300 0.408 0.470 2026 6 26 61217 202.490 393.705 11.6123 0.413 -0.180 0.042 0.038 0.0392 0.438 0.502 2026 6 27 61218 203.219 392.630 12.1187 0.401 -0.181 0.042 0.039 0.0236 0.438 0.502 2026 6 28 61219 203.802 391.732 12.7145 0.381 -0.202 0.042 0.039 0.0148 0.420 0.483 2026 6 29 61220 204.332 390.876 13.3478 0.362 -0.233 0.041 0.039 0.0189 0.293 0.350 2026 6 30 61221 204.744 389.850 13.9614 0.349 -0.269 0.041 0.040 0.0336 0.293 0.350 2026 7 1 61222 205.315 389.256 14.4916 0.361 -0.302 0.042 0.042 0.0502 0.310 0.369 Preliminary extension 2026 7 2 61223 205.411 388.538 14.8279 0.382 -0.333 0.055 0.051 0.0864 1.627 1.870 2026 7 3 61224 205.687 387.680 14.8892 0.403 -0.357 0.046 0.042 0.1970 1.902 2.184 2026 7 4 61225 206.182 386.493 14.6696 0.402 -0.361 0.043 0.039 0.0684 1.903 2.185 2026 7 5 61226 207.488 385.232 14.2199 0.390 -0.352 0.042 0.038 0.0225 1.674 1.924 2026 7 6 61227 209.166 384.640 13.6125 0.374 -0.337 0.041 0.038 0.0141 0.082 0.112 2026 7 7 61228 210.510 384.083 12.9298 0.360 -0.320 0.041 0.038 0.0171 0.078 0.107 2026 7 8 61229 211.594 383.754 12.2358 0.363 -0.312 0.041 0.037 0.0247 0.180 0.218 2026 7 9 61230 211.863 383.278 11.6565 0.372 -0.307 0.042 0.037 0.0490 8.124 8.916 2026 7 10 61231 211.967 382.625 11.3284 0.382 -0.304 0.042 0.037 0.1731 9.824 10.776 2026 7 11 61232 211.685 382.170 11.2836 0.384 -0.304 0.043 0.038 0.0659 9.828 10.781 2026 7 12 61233 211.741 381.364 11.4401 0.382 -0.305 0.046 0.041 0.0216 8.535 9.364 2026 7 13 61234 211.908 380.311 11.6807 0.374 -0.305 0.048 0.044 0.0129 0.063 0.076 2026 7 14 61235 212.235 378.961 11.8401 0.362 -0.303 0.049 0.045 0.0116 0.039 0.049 2026 7 15 61236 212.683 377.720 11.7902 0.339 -0.294 0.049 0.046 0.0126 0.039 0.049 2026 7 16 61237 212.901 376.462 11.5436 0.312 -0.282 0.050 0.046 0.0137 0.034 0.045 2026 7 17 61238 213.785 375.211 11.0695 0.290 -0.269 0.050 0.046 0.0138 0.033 0.045 2026 7 18 61239 214.875 374.376 10.4666 0.364 -0.301 0.050 0.047 0.0106 0.033 0.045 2026 7 19 61240 215.346 373.319 9.8922 0.456 -0.336 0.050 0.047 0.0113 0.034 0.047 2026 7 20 61241 215.494 372.301 9.4436 0.478 -0.327 0.050 0.046 0.0134 0.041 0.062 2026 7 21 61242 215.929 371.364 9.2188 0.374 -0.244 0.050 0.045 0.0157 0.043 0.067 2026 7 22 61243 217.098 370.784 9.1971 0.049 -0.032 0.050 0.045 0.0209 0.051 0.079 2026 7 23 61244 217.865 370.130 9.3732 -0.011 0.007 0.050 0.045 0.0271 0.056 0.087 2026 7 24 61245 218.623 369.527 9.7423 0.000 0.000 0.051 0.046 0.0251 0.057 0.087 2026 7 25 61246 219.161 369.102 10.2734 0.311 -0.109 0.052 0.046 0.0169 0.500 0.500 2026 7 26 61247 219.344 368.669 10.8977 0.316 -0.113 0.052 0.046 0.0168 0.500 0.500 2026 7 27 61248 219.407 368.229 11.5551 0.321 -0.114 0.051 0.046 0.0206 0.500 0.500 2026 7 28 61249 219.132 367.327 12.1533 0.326 -0.114 0.050 0.046 0.0325 0.500 0.500 2026 7 29 61250 219.177 366.344 12.6250 0.328 -0.119 0.049 0.045 0.0563 0.500 0.500 2026 7 30 61251 219.622 365.815 12.8857 0.327 -0.135 0.050 0.046 0.0769 0.500 0.500 2026 7 31 61252 220.393 365.349 12.8901 0.323 -0.160 0.055 0.047 0.0635 0.500 0.500 2026 8 1 61253 221.432 364.841 12.6694 0.316 -0.184 0.072 0.057 0.0514 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 2026 6 2 61193 -113.113 -12.782 1.212 0.535 2026 6 3 61194 -113.117 -12.663 1.213 0.536 2026 6 4 61195 -113.067 -12.581 1.367 0.641 2026 6 5 61196 -112.990 -12.552 1.399 0.663 2026 6 6 61197 -112.866 -12.431 1.400 0.663 2026 6 7 61198 -112.726 -12.209 1.285 0.606 2026 6 8 61199 -112.736 -12.060 0.489 0.207 2026 6 9 61200 -113.019 -12.129 0.487 0.206 2026 6 10 61201 -113.503 -12.346 0.502 0.213 2026 6 11 61202 -114.039 -12.417 1.732 0.798 2026 6 12 61203 -114.623 -12.283 1.996 0.923 2026 6 13 61204 -115.215 -12.136 1.997 0.924 2026 6 14 61205 -115.579 -12.182 1.780 0.824 2026 6 15 61206 -115.523 -12.290 0.278 0.130 2026 6 16 61207 -115.204 -12.243 0.274 0.127 2026 6 17 61208 -114.921 -12.147 0.288 0.132 2026 6 18 61209 -114.787 -12.147 1.383 0.511 2026 6 19 61210 -114.819 -12.196 1.613 0.590 2026 6 20 61211 -115.120 -12.095 1.614 0.591 2026 6 21 61212 -115.709 -11.843 1.492 0.556 2026 6 22 61213 -116.285 -11.669 0.664 0.319 2026 6 23 61214 -116.500 -11.725 0.662 0.318 2026 6 24 61215 -116.375 -11.889 0.666 0.320 2026 6 25 61216 -116.220 -12.003 1.026 0.470 2026 6 26 61217 -116.262 -12.062 1.102 0.502 2026 6 27 61218 -116.513 -12.213 1.102 0.502 2026 6 28 61219 -116.834 -12.468 1.055 0.483 2026 6 29 61220 -117.111 -12.651 0.738 0.350 2026 6 30 61221 -117.283 -12.584 0.737 0.350 2026 7 1 61222 -117.296 -12.300 0.780 0.369 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 2026 6 2 61193 -0.0227 0.0085 15.04106718262 0.00000000148 2026 6 3 61194 0.0031 0.0068 15.04106717813 0.00000000118 2026 6 4 61195 0.1381 0.0069 15.04106715463 0.00000000120 2026 6 5 61196 0.3314 0.0074 15.04106712098 0.00000000129 2026 6 6 61197 0.5309 0.0075 15.04106708625 0.00000000131 2026 6 7 61198 0.7074 0.0095 15.04106705552 0.00000000165 2026 6 8 61199 0.8644 0.0110 15.04106702819 0.00000000191 2026 6 9 61200 0.9470 0.0082 15.04106701381 0.00000000143 2026 6 10 61201 0.9478 0.0068 15.04106701367 0.00000000118 2026 6 11 61202 0.8009 0.0076 15.04106703924 0.00000000132 2026 6 12 61203 0.5273 0.0070 15.04106708687 0.00000000122 2026 6 13 61204 0.1916 0.0070 15.04106714532 0.00000000122 2026 6 14 61205 -0.0553 0.0089 15.04106718830 0.00000000155 2026 6 15 61206 -0.1961 0.0092 15.04106721281 0.00000000160 2026 6 16 61207 -0.1698 0.0082 15.04106720823 0.00000000143 2026 6 17 61208 -0.1102 0.0065 15.04106719785 0.00000000113 2026 6 18 61209 0.0409 0.0068 15.04106717155 0.00000000118 2026 6 19 61210 0.1714 0.0078 15.04106714883 0.00000000136 2026 6 20 61211 0.2879 0.0084 15.04106712855 0.00000000146 2026 6 21 61212 0.3358 0.0085 15.04106712021 0.00000000148 2026 6 22 61213 0.2684 0.0086 15.04106713195 0.00000000150 2026 6 23 61214 0.1380 0.0088 15.04106715465 0.00000000153 2026 6 24 61215 -0.0597 0.0078 15.04106718906 0.00000000136 2026 6 25 61216 -0.2504 0.0092 15.04106722226 0.00000000160 2026 6 26 61217 -0.4272 0.0099 15.04106725304 0.00000000172 2026 6 27 61218 -0.5678 0.0083 15.04106727752 0.00000000144 2026 6 28 61219 -0.6236 0.0096 15.04106728723 0.00000000167 2026 6 29 61220 -0.6346 0.0088 15.04106728915 0.00000000153 2026 6 30 61221 -0.5803 0.0092 15.04106727969 0.00000000160 2026 7 1 61222 -0.4494 0.0080 15.04106725690 0.00000000139 4 - INFORMATION ON TIME SCALES TAI - UTC = 37 s. during period [61193-61222] No leap second introduced during period [61193-61222] 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 bkg2025b.eoxy 48 54 3 - 32 36 13 61193.21 to 61221.21 238 143 19 - 75 86 GSFC gsf2023a.eoxy 52 55 3 7 31 35 14 61193.21 to 61221.21 237 263 18 13 52 81 IAA iaa2021a.eops 395 520 25 - 321 333 6 61193.21 to 61203.27 290 262 15 - 33 35 USNO usn2025b.eoxy 46 46 2 - 43 47 10 61193.21 to 61221.21 125 124 13 - 53 77 IVS * ivs2025a.eoxy 279 383 22 - 210 237 9 61193.21 to 61221.21 251 233 12 - 1 6 ASI asi2023a.eoxy 102 101 11 - 183 163 12 61193.21 to 61221.21 5381 3026 90 - 171 98 VIE vie2023a.eopxy 164 158 8 - - - 17 61193.00 to 61215.00 221 287 12 - - - VIE vie2023a.eoxy - - - - 39 45 10 61193.21 to 61214.21 - - - - 69 118 VLBI Intensive GSI * gsiint2d.eopi - - 11 - - - 8 61197.33 to 61219.33 - - 39 - - - BKG * bkg2025b.eopi - - 8 - - - 57 61193.00 to 61217.00 - - 89 - - - GSFC * gsf2023a.eopi - - 11 - - - 78 61193.00 to 61221.84 - - 36 - - - IAA * iaa2021a.eopi - - 9 - - - 79 61193.00 to 61221.84 - - 25 - - - IAA * iaaq.eopi - - 35 - - - 27 61193.31 to 61219.31 - - 57 - - - USNO * usn2025b.eopi - - 12 - - - 66 61193.00 to 61221.75 - - 26 - - - VIE vie2023a.eopi - - 9 - - - 80 61193.00 to 61221.84 - - 46 - - - GPS CODE COD0OPSFIN 3 3 - 0 - - 29 61193.50 to 61221.50 28 18 - 9 - - JPL JPL0OPSFIN 4 4 - 2 - - 29 61193.50 to 61221.50 40 21 - 15 - - GFZ GFZ0OPSFIN 7 6 - 1 - - 29 61193.50 to 61221.50 27 21 - 9 - - ESA ESA0OPSFIN 5 5 - 1 - - 29 61193.50 to 61221.50 33 21 - 8 - - JGX JGX0OPSFIN 2 2 - 0 - - 24 61198.50 to 61221.50 25 18 - 8 - - SIO SIO0OPSFIN 24 22 - 9 - - 29 61193.50 to 61221.50 46 30 - 22 - - EMR EMR0OPSRAP 3 2 - 0 - - 29 61193.50 to 61221.50 71 29 - 11 - - IAA gnss.res 0 0 - 0 - - 28 61193.50 to 61220.50 66 52 - 16 - - GRGS GRG0OPSFIN 264 264 - 0 - - 29 61193.50 to 61221.50 25 22 - 11 - - ASI asi*.erp 10 9 - 0 - - 21 61198.50 to 61218.50 24 29 - 52 - - MIT MIT0OPSFIN 9 9 - 1 - - 29 61193.50 to 61221.50 41 31 - 11 - - IGS * IGS0OPSRAP 8 8 - 2 - - 29 61193.50 to 61221.50 28 20 - 11 - - IGS * IGS0OPSFIN 6 7 - 1 - - 29 61193.50 to 61221.50 26 18 - 9 - - SLR MCC tg*.02 230 334 - 46 - - 30 61193.00 to 61222.00 138 239 - 260 - - IAA slr_v.dat 89 116 - 6 - - 26 61193.00 to 61220.00 285 412 - 26 - - ASI asi.*.eop 66 93 - 18 - - 29 61193.50 to 61221.50 198 274 - 77 - - ILRS * ilrsa.eop 54 68 - 14 - - 29 61193.50 to 61221.50 165 208 - 45 - - BULLETIN A NEOS mark3.out 20 20 14 - - - 30 61193.00 to 61222.00 33 34 21 - - - To unsubscribe : http://hpiers.obspm.fr/eop-pc/products/bulletins/bulletin_registration.html