BULLETIN B 465 2 November 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 0.043 0.0383 4.848 5.173 2026 9 2 61285 209.868 339.195 1.7596 0.444 -0.118 0.041 0.044 0.0317 13.299 11.315 2026 9 3 61286 208.734 338.515 1.2631 0.455 -0.091 0.041 0.043 0.0211 2.430 2.158 2026 9 4 61287 207.145 338.025 1.0332 0.464 -0.077 0.042 0.045 0.0217 0.216 0.292 2026 9 5 61288 205.208 337.092 0.9830 0.465 -0.102 0.046 0.044 0.0153 0.210 0.287 2026 9 6 61289 203.579 336.211 0.9361 0.460 -0.146 0.045 0.044 0.0106 0.198 0.266 2026 9 7 61290 202.400 335.237 0.7106 0.446 -0.187 0.047 0.044 0.0126 0.121 0.131 2026 9 8 61291 201.871 334.420 0.2560 0.424 -0.212 0.044 0.046 0.0202 0.121 0.130 2026 9 9 61292 201.164 334.193 -0.4648 0.380 -0.165 0.040 0.048 0.0284 0.122 0.131 2026 9 10 61293 200.225 333.865 -1.4496 0.331 -0.095 0.039 0.047 0.0335 0.234 0.193 2026 9 11 61294 198.580 333.486 -2.6136 0.287 -0.029 0.042 0.046 0.0357 0.258 0.207 2026 9 12 61295 196.399 332.603 -3.8341 0.270 -0.028 0.043 0.045 0.0193 0.259 0.207 2026 9 13 61296 194.469 331.678 -5.0347 0.273 -0.069 0.044 0.043 0.0117 0.240 0.193 2026 9 14 61297 192.984 330.585 -6.1949 0.282 -0.121 0.047 0.043 0.0115 0.094 0.087 2026 9 15 61298 191.626 329.501 -7.1037 0.291 -0.169 0.040 0.043 0.0147 0.094 0.087 2026 9 16 61299 190.849 329.159 -7.8680 0.282 -0.169 0.037 0.041 0.0194 0.095 0.088 2026 9 17 61300 190.022 329.144 -8.4700 0.265 -0.149 0.038 0.044 0.0265 0.180 0.178 2026 9 18 61301 189.082 329.074 -8.9366 0.249 -0.124 0.040 0.045 0.0366 0.198 0.198 2026 9 19 61302 187.660 329.315 -9.4277 0.240 -0.112 0.040 0.042 0.0237 0.199 0.198 2026 9 20 61303 186.119 329.096 -9.9589 0.235 -0.108 0.041 0.043 0.0164 1.831 1.883 2026 9 21 61304 185.048 328.523 -10.5848 0.235 -0.111 0.041 0.042 0.0250 12.639 13.040 2026 9 22 61305 183.773 328.215 -11.3663 0.238 -0.119 0.039 0.042 0.0709 12.670 13.072 2026 9 23 61306 182.430 327.672 -12.3394 0.246 -0.138 0.037 0.043 0.1758 12.771 13.177 2026 9 24 61307 181.465 327.263 -13.5011 0.257 -0.162 0.038 0.042 0.1696 20.881 21.616 2026 9 25 61308 180.825 327.022 -14.8176 0.270 -0.186 0.039 0.040 0.1155 22.595 23.399 2026 9 26 61309 180.028 326.583 -16.2862 0.284 -0.208 0.040 0.042 0.0384 22.598 23.402 2026 9 27 61310 179.098 326.180 -17.8283 0.298 -0.225 0.041 0.044 0.0230 19.725 20.726 2026 9 28 61311 178.438 325.715 -19.3118 0.313 -0.236 0.042 0.045 0.0298 0.408 2.730 2026 9 29 61312 177.494 326.038 -20.6143 0.326 -0.239 0.046 0.046 0.0506 0.350 2.676 2026 9 30 61313 176.118 325.824 -21.6805 0.338 -0.228 0.046 0.043 0.0255 0.347 2.648 2026 10 1 61314 174.626 325.287 -22.4957 0.348 -0.207 0.047 0.045 0.0136 0.089 0.487 Preliminary extension 2026 10 2 61315 173.249 324.603 -23.0892 0.357 -0.178 0.051 0.049 0.0108 0.037 0.047 2026 10 3 61316 172.656 323.844 -23.6132 0.364 -0.110 0.052 0.050 0.0099 0.037 0.046 2026 10 4 61317 171.884 323.555 -24.1997 0.370 -0.036 0.041 0.039 0.0107 0.146 0.053 2026 10 5 61318 170.963 322.845 -24.9573 0.376 0.013 0.037 0.036 0.0156 0.852 0.101 2026 10 6 61319 169.857 322.582 -25.9875 0.383 0.013 0.036 0.036 0.0209 0.779 0.097 2026 10 7 61320 168.679 322.108 -27.2341 0.392 -0.082 0.036 0.036 0.0179 0.370 0.075 2026 10 8 61321 168.188 322.205 -28.6462 0.411 -0.137 0.037 0.036 0.0151 0.081 0.056 2026 10 9 61322 167.236 322.806 -30.1190 0.441 -0.114 0.037 0.036 0.0159 0.091 0.046 2026 10 10 61323 166.246 323.096 -31.5850 0.474 -0.090 0.038 0.036 0.0187 0.097 0.044 2026 10 11 61324 165.272 323.490 -32.9693 0.504 -0.077 0.038 0.036 0.0221 0.089 0.046 2026 10 12 61325 163.820 323.674 -34.2166 0.525 -0.066 0.039 0.036 0.0290 0.037 0.056 2026 10 13 61326 161.964 322.908 -35.2350 0.534 -0.059 0.038 0.036 0.0478 0.037 0.056 2026 10 14 61327 160.375 322.067 -36.0497 0.509 -0.062 0.038 0.036 0.0968 0.037 0.056 2026 10 15 61328 158.534 321.531 -36.6642 0.469 -0.069 0.037 0.037 0.2797 0.048 0.060 2026 10 16 61329 157.151 320.779 -37.1763 0.422 -0.078 0.037 0.037 0.1393 0.050 0.061 2026 10 17 61330 155.718 320.493 -37.7361 0.440 -0.100 0.037 0.037 0.0526 0.050 0.061 2026 10 18 61331 154.124 320.080 -38.3843 0.466 -0.121 0.039 0.039 0.0238 0.052 0.063 2026 10 19 61332 152.878 319.280 -39.1613 0.439 -0.123 0.042 0.043 0.0207 0.067 0.076 2026 10 20 61333 151.292 318.741 -40.1253 0.321 -0.093 0.043 0.044 0.0260 0.071 0.081 2026 10 21 61334 150.151 318.016 -41.3453 0.042 -0.012 0.043 0.044 0.0360 0.085 0.097 2026 10 22 61335 149.169 317.710 -42.8026 0.292 -0.092 0.042 0.044 0.0384 0.500 0.500 2026 10 23 61336 148.390 317.579 -44.4375 0.285 -0.098 0.043 0.044 0.0225 0.500 0.500 2026 10 24 61337 147.838 317.598 -46.1351 0.277 -0.094 0.043 0.044 0.0179 0.500 0.500 2026 10 25 61338 147.089 317.987 -47.7921 0.267 -0.083 0.043 0.045 0.0179 0.500 0.500 2026 10 26 61339 146.194 318.399 -49.3460 0.255 -0.069 0.043 0.045 0.0185 0.500 0.500 2026 10 27 61340 145.334 318.510 -50.7053 0.246 -0.061 0.043 0.045 0.0197 0.500 0.500 2026 10 28 61341 144.322 318.447 -51.7691 0.244 -0.059 0.044 0.045 0.0224 0.500 0.500 2026 10 29 61342 142.812 318.234 -52.5697 0.250 -0.065 0.044 0.045 0.0212 0.500 0.500 2026 10 30 61343 141.382 317.924 -53.2229 0.262 -0.074 0.044 0.045 0.0189 0.500 0.500 2026 10 31 61344 139.928 317.929 -53.9027 0.274 -0.082 0.043 0.045 0.0221 0.500 0.500 2026 11 1 61345 138.004 317.974 -54.6967 0.279 -0.085 0.053 0.052 0.0354 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 9 2 61285 -124.321 -11.509 33.431 11.315 2026 9 3 61286 -124.258 -11.483 6.110 2.158 2026 9 4 61287 -124.079 -11.500 0.542 0.292 2026 9 5 61288 -123.807 -11.583 0.527 0.287 2026 9 6 61289 -123.509 -11.688 0.497 0.266 2026 9 7 61290 -123.309 -11.741 0.305 0.131 2026 9 8 61291 -123.295 -11.688 0.304 0.130 2026 9 9 61292 -123.453 -11.483 0.307 0.131 2026 9 10 61293 -123.605 -11.235 0.588 0.193 2026 9 11 61294 -123.673 -11.031 0.650 0.207 2026 9 12 61295 -123.740 -10.960 0.650 0.207 2026 9 13 61296 -124.026 -11.018 0.604 0.193 2026 9 14 61297 -124.562 -11.174 0.237 0.087 2026 9 15 61298 -125.095 -11.361 0.236 0.087 2026 9 16 61299 -125.350 -11.434 0.238 0.088 2026 9 17 61300 -125.180 -11.358 0.452 0.178 2026 9 18 61301 -124.703 -11.202 0.497 0.198 2026 9 19 61302 -124.149 -11.109 0.499 0.198 2026 9 20 61303 -123.720 -11.149 4.602 1.883 2026 9 21 61304 -123.509 -11.261 31.771 13.040 2026 9 22 61305 -123.512 -11.324 31.850 13.072 2026 9 23 61306 -123.650 -11.287 32.105 13.177 2026 9 24 61307 -123.807 -11.191 52.490 21.616 2026 9 25 61308 -123.884 -11.108 56.799 23.399 2026 9 26 61309 -123.869 -11.060 56.807 23.402 2026 9 27 61310 -123.840 -11.033 49.584 20.726 2026 9 28 61311 -123.880 -11.023 1.025 2.730 2026 9 29 61312 -123.974 -11.035 0.880 2.676 2026 9 30 61313 -124.008 -11.057 0.871 2.648 2026 10 1 61314 -123.856 -11.061 0.225 0.487 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 9 2 61285 0.6041 0.0087 15.04106707350 0.00000000151 2026 9 3 61286 0.3698 0.0086 15.04106711429 0.00000000150 2026 9 4 61287 0.1167 0.0122 15.04106715835 0.00000000212 2026 9 5 61288 0.0173 0.0098 15.04106717566 0.00000000171 2026 9 6 61289 0.1119 0.0139 15.04106715919 0.00000000242 2026 9 7 61290 0.3351 0.0106 15.04106712033 0.00000000185 2026 9 8 61291 0.5874 0.0092 15.04106707641 0.00000000160 2026 9 9 61292 0.8570 0.0080 15.04106702948 0.00000000139 2026 9 10 61293 1.0906 0.0088 15.04106698881 0.00000000153 2026 9 11 61294 1.2136 0.0104 15.04106696740 0.00000000181 2026 9 12 61295 1.2272 0.0095 15.04106696503 0.00000000165 2026 9 13 61296 1.1818 0.0111 15.04106697293 0.00000000193 2026 9 14 61297 1.0687 0.0103 15.04106699262 0.00000000179 2026 9 15 61298 0.8108 0.0087 15.04106703752 0.00000000151 2026 9 16 61299 0.6832 0.0075 15.04106705973 0.00000000131 2026 9 17 61300 0.5299 0.0083 15.04106708642 0.00000000144 2026 9 18 61301 0.4496 0.0104 15.04106710040 0.00000000181 2026 9 19 61302 0.5109 0.0087 15.04106708973 0.00000000151 2026 9 20 61303 0.5683 0.0099 15.04106707974 0.00000000172 2026 9 21 61304 0.6963 0.0091 15.04106705745 0.00000000158 2026 9 22 61305 0.8729 0.0094 15.04106702671 0.00000000164 2026 9 23 61306 1.0696 0.0087 15.04106699247 0.00000000151 2026 9 24 61307 1.2502 0.0118 15.04106696103 0.00000000205 2026 9 25 61308 1.3968 0.0101 15.04106693551 0.00000000176 2026 9 26 61309 1.5205 0.0084 15.04106691397 0.00000000146 2026 9 27 61310 1.5383 0.0095 15.04106691087 0.00000000165 2026 9 28 61311 1.4089 0.0107 15.04106693340 0.00000000186 2026 9 29 61312 1.1878 0.0102 15.04106697189 0.00000000178 2026 9 30 61313 0.9414 0.0083 15.04106701479 0.00000000144 2026 10 1 61314 0.6926 0.0087 15.04106705810 0.00000000151 4 - INFORMATION ON TIME SCALES TAI - UTC = 37 s. during period [61285-61314] No leap second introduced during period [61285-61314] 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 51 56 3 - 39 39 14 61285.50 to 61313.50 145 122 32 - 92 51 GSFC gsf2023a.eoxy 59 61 3 9 39 42 14 61285.50 to 61313.50 188 246 30 7 92 63 IAA iaa2021a.eops 57 69 5 - 42 49 3 61285.50 to 61294.27 156 108 13 - 62 28 USNO usn2025b.eoxy 62 67 4 - 67 68 8 61287.27 to 61312.21 128 124 25 - 70 108 IVS * ivs2025a.eoxy 334 470 28 - 207 218 8 61287.27 to 61312.21 390 475 9 - 9 21 ASI asi2023a.eoxy 106 129 11 - 171 146 12 61285.50 to 61312.21 1930 1519 42 - 199 87 VIE vie2025b.eopxy 240 265 14 - - - 22 61285.00 to 61314.00 429 236 14 - - - VIE vie2025b.eoxy - - - - 52 51 13 61285.50 to 61313.50 - - - - 83 81 VLBI Intensive GSI * gsiint2d.eopi - - 5 - - - 6 61288.33 to 61303.33 - - 21 - - - BKG * bkg2025b.eopi - - 7 - - - 52 61285.75 to 61313.75 - - 31 - - - GSFC * gsf2023a.eopi - - 10 - - - 59 61285.75 to 61313.75 - - 37 - - - IAA * iaa2021a.eopi - - 6 - - - 59 61285.75 to 61313.75 - - 35 - - - IAA * iaaq.eopi - - 31 - - - 29 61285.31 to 61313.31 - - 50 - - - USNO * usn2025b.eopi - - 11 - - - 63 61285.75 to 61313.75 - - 32 - - - OPA opa2026b.eopi - - 6 - - - 51 61285.75 to 61313.75 - - 289 - - - VIE vie2025b.eopi - - 6 - - - 60 61285.75 to 61313.75 - - 31 - - - GPS CODE COD0OPSFIN 3 3 - 0 - - 29 61285.50 to 61313.50 35 23 - 12 - - JPL JPL0OPSFIN 4 4 - 3 - - 29 61285.50 to 61313.50 46 33 - 21 - - GFZ GFZ0OPSFIN 6 6 - 1 - - 29 61285.50 to 61313.50 34 30 - 14 - - ESA ESA0OPSFIN 5 5 - 1 - - 29 61285.50 to 61313.50 37 30 - 12 - - JGX JGX0OPSFIN 2 2 - 0 - - 29 61285.50 to 61313.50 33 24 - 11 - - SIO SIO0OPSFIN 24 21 - 10 - - 29 61285.50 to 61313.50 47 35 - 13 - - EMR EMR0OPSFIN 14 15 - 6 - - 29 61285.50 to 61313.50 45 35 - 18 - - IAA gnss.res 0 0 - 0 - - 28 61285.50 to 61313.50 59 54 - 47 - - GRGS GRG0OPSFIN 270 270 - 0 - - 29 61285.50 to 61313.50 29 27 - 12 - - ASI asi*.erp 10 9 - 0 - - 16 61296.50 to 61311.50 23 25 - 69 - - MIT MIT0OPSFIN 9 9 - 1 - - 29 61285.50 to 61313.50 54 42 - 14 - - IGS * IGS0OPSRAP 8 6 - 1 - - 29 61285.50 to 61313.50 40 25 - 13 - - IGS * IGS0OPSFIN 9 9 - 2 - - 29 61285.50 to 61313.50 33 29 - 13 - - SLR MCC tg*.02 224 322 - 55 - - 30 61285.00 to 61314.00 113 255 - 199 - - IAA slr_v.dat 128 148 - 7 - - 20 61285.00 to 61307.00 610 370 - 35 - - ASI asi.*.eop 66 75 - 16 - - 29 61285.50 to 61313.50 193 194 - 50 - - ILRS * ilrsa.eop 41 47 - 9 - - 29 61285.50 to 61313.50 113 163 - 26 - - BULLETIN A NEOS mark3.out 29 29 10 - - - 30 61285.00 to 61314.00 34 53 20 - - - To unsubscribe : http://hpiers.obspm.fr/eop-pc/products/bulletins/bulletin_registration.html