BULLETIN B 460 1 June 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 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 0.037 0.039 0.0260 2.167 4.526 2026 4 2 61132 126.437 410.175 50.0221 0.501 -0.071 0.036 0.042 0.0189 0.067 0.074 2026 4 3 61133 127.825 411.331 49.2010 0.539 -0.058 0.035 0.040 0.0154 0.061 0.070 2026 4 4 61134 129.535 412.057 48.5886 0.551 -0.045 0.038 0.043 0.0130 0.061 0.070 2026 4 5 61135 131.630 412.622 48.1656 0.546 -0.034 0.039 0.046 0.0126 0.066 0.076 2026 4 6 61136 133.560 413.291 47.9226 0.530 -0.027 0.038 0.044 0.0138 0.162 0.191 2026 4 7 61137 135.374 413.590 47.8188 0.506 -0.026 0.036 0.043 0.0188 0.163 0.191 2026 4 8 61138 136.880 413.544 47.7627 0.478 -0.034 0.037 0.043 0.0269 0.223 0.200 2026 4 9 61139 138.546 413.709 47.7158 0.451 -0.059 0.038 0.042 0.0447 2.973 0.575 2026 4 10 61140 139.773 413.664 47.5928 0.425 -0.087 0.037 0.042 0.0818 10.279 1.571 2026 4 11 61141 141.211 413.823 47.3072 0.404 -0.104 0.039 0.043 0.0417 10.719 1.631 2026 4 12 61142 142.395 414.232 46.8578 0.388 -0.111 0.039 0.041 0.0252 10.041 2.773 2026 4 13 61143 143.275 414.482 46.1734 0.376 -0.111 0.038 0.039 0.0303 5.265 10.721 2026 4 14 61144 144.200 414.576 45.2205 0.367 -0.105 0.037 0.039 0.0504 5.250 10.745 2026 4 15 61145 145.290 414.959 44.0898 0.359 -0.094 0.038 0.039 0.0362 5.197 10.636 2026 4 16 61146 145.772 415.219 42.8476 0.355 -0.080 0.039 0.036 0.0225 0.996 1.959 2026 4 17 61147 146.679 415.296 41.5955 0.355 -0.067 0.039 0.034 0.0208 0.100 0.111 2026 4 18 61148 147.619 415.398 40.5418 0.365 -0.062 0.039 0.036 0.0176 0.098 0.106 2026 4 19 61149 148.337 415.629 39.7756 0.381 -0.062 0.039 0.037 0.0143 0.091 0.100 2026 4 20 61150 149.270 416.107 39.2918 0.399 -0.065 0.040 0.036 0.0096 0.040 0.058 2026 4 21 61151 150.026 415.972 39.0254 0.418 -0.069 0.039 0.037 0.0096 0.040 0.058 2026 4 22 61152 150.987 416.318 38.8547 0.434 -0.072 0.035 0.040 0.0108 0.052 0.288 2026 4 23 61153 151.686 416.812 38.6657 0.448 -0.074 0.036 0.037 0.0192 0.999 18.269 2026 4 24 61154 152.534 417.152 38.3302 0.457 -0.077 0.035 0.035 0.0526 1.196 22.011 2026 4 25 61155 153.583 417.898 37.8071 0.454 -0.077 0.036 0.035 0.0248 1.197 22.021 2026 4 26 61156 154.586 418.545 37.0952 0.443 -0.077 0.037 0.035 0.0119 1.196 22.008 2026 4 27 61157 155.250 419.221 36.2411 0.429 -0.076 0.038 0.038 0.0097 0.434 1.929 2026 4 28 61158 155.427 419.409 35.2741 0.416 -0.076 0.038 0.039 0.0140 0.455 0.387 2026 4 29 61159 155.490 419.022 34.3381 0.407 -0.076 0.039 0.037 0.0309 1.013 0.906 2026 4 30 61160 155.479 418.148 33.5426 0.406 -0.078 0.041 0.039 0.0559 2.735 2.508 2026 5 1 61161 155.990 417.384 32.9256 0.403 -0.081 0.041 0.037 0.0255 3.866 3.560 Preliminary extension 2026 5 2 61162 156.859 417.250 32.5068 0.397 -0.085 0.040 0.038 0.0143 4.095 3.770 2026 5 3 61163 157.968 417.056 32.2322 0.390 -0.091 0.033 0.031 0.0145 20.613 15.817 2026 5 4 61164 159.727 416.373 32.0782 0.384 -0.099 0.030 0.029 0.0272 21.865 16.730 2026 5 5 61165 161.247 416.083 32.0798 0.380 -0.109 0.030 0.029 0.1155 21.865 16.730 2026 5 6 61166 162.309 416.117 32.1320 0.386 -0.124 0.030 0.029 0.1087 21.733 16.668 2026 5 7 61167 163.180 416.189 32.1862 0.395 -0.140 0.030 0.029 0.0623 11.219 11.696 2026 5 8 61168 164.229 415.649 32.1906 0.404 -0.157 0.030 0.029 0.0541 9.001 10.648 2026 5 9 61169 164.999 415.243 32.0757 0.411 -0.173 0.031 0.029 0.0220 8.995 10.644 2026 5 10 61170 165.670 414.349 31.7137 0.417 -0.188 0.031 0.029 0.0119 7.841 9.281 2026 5 11 61171 167.148 413.409 31.0063 0.421 -0.200 0.031 0.029 0.0100 0.055 0.083 2026 5 12 61172 168.038 412.534 30.1523 0.422 -0.209 0.031 0.029 0.0099 0.031 0.056 2026 5 13 61173 169.089 411.662 29.1600 0.420 -0.214 0.031 0.029 0.0101 0.031 0.056 2026 5 14 61174 169.862 411.754 28.1252 0.415 -0.213 0.031 0.029 0.0111 0.038 0.059 2026 5 15 61175 170.466 411.676 27.1559 0.408 -0.203 0.032 0.029 0.0114 0.040 0.059 2026 5 16 61176 171.309 412.178 26.4017 0.473 -0.168 0.032 0.029 0.0098 0.040 0.059 2026 5 17 61177 171.848 412.491 25.9258 0.541 -0.119 0.034 0.031 0.0089 0.039 0.057 2026 5 18 61178 172.707 412.873 25.7307 0.534 -0.070 0.037 0.034 0.0086 0.036 0.044 2026 5 19 61179 173.418 413.187 25.6197 0.400 -0.029 0.038 0.035 0.0087 0.038 0.047 2026 5 20 61180 174.219 413.031 25.5213 0.289 -0.167 0.038 0.035 0.0087 0.500 0.500 2026 5 21 61181 174.678 412.605 25.2122 0.295 -0.171 0.037 0.035 0.0090 0.500 0.500 2026 5 22 61182 175.188 411.854 24.6297 0.297 -0.177 0.037 0.034 0.0089 0.500 0.500 2026 5 23 61183 175.950 410.989 23.7905 0.295 -0.183 0.038 0.035 0.0087 0.500 0.500 2026 5 24 61184 177.304 410.286 22.7624 0.292 -0.187 0.038 0.035 0.0090 0.500 0.500 2026 5 25 61185 178.558 409.966 21.7057 0.291 -0.187 0.038 0.035 0.0125 0.500 0.500 2026 5 26 61186 179.276 409.624 20.7211 0.292 -0.184 0.038 0.036 0.0155 0.500 0.500 2026 5 27 61187 179.932 409.484 19.8188 0.295 -0.181 0.038 0.036 0.0127 0.500 0.500 2026 5 28 61188 180.529 409.460 19.0529 0.299 -0.182 0.037 0.035 0.0129 0.500 0.500 2026 5 29 61189 180.774 409.225 18.4944 0.302 -0.186 0.037 0.035 0.0125 0.500 0.500 2026 5 30 61190 181.104 408.626 18.0603 0.304 -0.189 0.037 0.036 0.0127 0.500 0.500 2026 5 31 61191 181.531 408.050 17.8323 0.306 -0.188 0.043 0.040 0.0143 0.500 0.500 2026 6 1 61192 181.885 407.614 17.7470 0.312 -0.181 0.063 0.059 0.0191 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 4 2 61132 -111.079 -10.628 0.167 0.074 2026 4 3 61133 -110.958 -10.697 0.152 0.070 2026 4 4 61134 -110.996 -10.887 0.152 0.070 2026 4 5 61135 -111.179 -11.040 0.165 0.076 2026 4 6 61136 -111.377 -11.079 0.406 0.191 2026 4 7 61137 -111.433 -11.094 0.409 0.191 2026 4 8 61138 -111.296 -11.238 0.560 0.200 2026 4 9 61139 -111.011 -11.539 7.474 0.575 2026 4 10 61140 -110.662 -11.819 25.839 1.571 2026 4 11 61141 -110.366 -11.898 26.945 1.631 2026 4 12 61142 -110.307 -11.802 25.241 2.773 2026 4 13 61143 -110.560 -11.704 13.235 10.721 2026 4 14 61144 -110.914 -11.665 13.198 10.745 2026 4 15 61145 -111.075 -11.529 13.065 10.636 2026 4 16 61146 -111.074 -11.165 2.503 1.959 2026 4 17 61147 -111.278 -10.743 0.252 0.111 2026 4 18 61148 -111.870 -10.621 0.247 0.106 2026 4 19 61149 -112.552 -10.941 0.228 0.100 2026 4 20 61150 -112.850 -11.485 0.100 0.058 2026 4 21 61151 -112.608 -11.941 0.100 0.058 2026 4 22 61152 -112.069 -12.182 0.130 0.288 2026 4 23 61153 -111.562 -12.258 2.511 18.269 2026 4 24 61154 -111.265 -12.232 3.007 22.011 2026 4 25 61155 -111.184 -12.138 3.008 22.021 2026 4 26 61156 -111.190 -12.019 3.007 22.008 2026 4 27 61157 -111.189 -11.900 1.091 1.929 2026 4 28 61158 -111.179 -11.764 1.144 0.387 2026 4 29 61159 -111.160 -11.605 2.548 0.906 2026 4 30 61160 -111.089 -11.499 6.876 2.508 2026 5 1 61161 -110.992 -11.565 9.719 3.560 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 4 2 61132 0.9042 0.0102 15.04106702126 0.00000000178 2026 4 3 61133 0.7262 0.0106 15.04106705225 0.00000000185 2026 4 4 61134 0.5130 0.0132 15.04106708936 0.00000000230 2026 4 5 61135 0.3282 0.0141 15.04106712154 0.00000000245 2026 4 6 61136 0.1632 0.0145 15.04106715026 0.00000000252 2026 4 7 61137 0.0649 0.0142 15.04106716737 0.00000000247 2026 4 8 61138 0.0437 0.0127 15.04106717106 0.00000000221 2026 4 9 61139 0.0709 0.0108 15.04106716633 0.00000000188 2026 4 10 61140 0.1898 0.0131 15.04106714563 0.00000000228 2026 4 11 61141 0.3702 0.0126 15.04106711422 0.00000000219 2026 4 12 61142 0.5591 0.0149 15.04106708134 0.00000000259 2026 4 13 61143 0.8155 0.0142 15.04106703670 0.00000000247 2026 4 14 61144 1.0648 0.0133 15.04106699330 0.00000000232 2026 4 15 61145 1.2034 0.0112 15.04106696917 0.00000000195 2026 4 16 61146 1.2663 0.0113 15.04106695822 0.00000000197 2026 4 17 61147 1.1866 0.0146 15.04106697210 0.00000000254 2026 4 18 61148 0.9184 0.0131 15.04106701879 0.00000000228 2026 4 19 61149 0.6177 0.0157 15.04106707114 0.00000000273 2026 4 20 61150 0.3584 0.0093 15.04106711628 0.00000000162 2026 4 21 61151 0.1925 0.0080 15.04106714516 0.00000000139 2026 4 22 61152 0.1629 0.0064 15.04106715031 0.00000000111 2026 4 23 61153 0.2446 0.0064 15.04106713609 0.00000000111 2026 4 24 61154 0.4269 0.0075 15.04106710435 0.00000000131 2026 4 25 61155 0.6235 0.0073 15.04106707013 0.00000000127 2026 4 26 61156 0.7964 0.0096 15.04106704003 0.00000000167 2026 4 27 61157 0.9116 0.0104 15.04106701997 0.00000000181 2026 4 28 61158 0.9763 0.0092 15.04106700871 0.00000000160 2026 4 29 61159 0.8843 0.0100 15.04106702473 0.00000000174 2026 4 30 61160 0.7114 0.0070 15.04106705483 0.00000000122 2026 5 1 61161 0.5164 0.0071 15.04106708877 0.00000000124 4 - INFORMATION ON TIME SCALES TAI - UTC = 37 s. during period [61132-61161] No leap second introduced during period [61132-61161] 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 39 46 2 - 27 26 13 61132.27 to 61160.27 100 96 12 - 46 46 GSFC gsf2023a.eoxy 50 53 3 6 33 32 12 61132.27 to 61160.27 135 142 20 17 54 48 IAA iaa2021a.eops 316 415 21 - 313 339 13 61132.27 to 61160.27 237 123 12 - 77 48 USNO usn2025b.eoxy 35 38 2 - 36 36 10 61132.27 to 61160.27 108 77 13 - 78 77 IVS * ivs2025a.eoxy 328 519 23 - 220 214 9 61132.28 to 61160.27 79 143 11 - 9 3 ASI asi2023a.eoxy 70 117 10 - 116 95 13 61132.27 to 61160.27 4169 4297 101 - 110 67 VIE vie2023a.eopxy 159 191 8 - - - 18 61132.00 to 61161.00 240 238 18 - - - VIE vie2023a.eoxy - - - - 36 37 12 61132.27 to 61160.27 - - - - 46 26 VLBI Intensive GSI * gsiint2d.eopi - - 5 - - - 8 61134.33 to 61156.33 - - 20 - - - BKG * bkg2025b.eopi - - 6 - - - 69 61132.00 to 61160.75 - - 25 - - - GSFC * gsf2023a.eopi - - 9 - - - 70 61132.00 to 61160.75 - - 35 - - - IAA * iaa2021a.eopi - - 7 - - - 75 61132.00 to 61160.75 - - 22 - - - IAA * iaaq.eopi - - 46 - - - 29 61132.31 to 61160.31 - - 68 - - - USNO * usn2025b.eopi - - 11 - - - 67 61132.00 to 61160.75 - - 21 - - - GPS CODE COD0OPSFIN 3 3 - 0 - - 29 61132.50 to 61160.50 27 27 - 13 - - JPL JPL0OPSFIN 4 4 - 3 - - 29 61132.50 to 61160.50 29 36 - 17 - - GFZ GFZ0OPSFIN 6 6 - 1 - - 29 61132.50 to 61160.50 31 37 - 14 - - ESA ESA0OPSFIN 5 5 - 1 - - 29 61132.50 to 61160.50 29 28 - 13 - - SIO SIO0OPSFIN 23 21 - 10 - - 29 61132.50 to 61160.50 30 40 - 20 - - EMR EMR0OPSRAP 3 3 - 0 - - 29 61132.50 to 61160.50 44 59 - 11 - - IAA gnss.res 0 0 - 0 - - 26 61132.50 to 61160.50 72 75 - 33 - - GRGS GRG0OPSFIN 264 264 - 0 - - 29 61132.50 to 61160.50 28 27 - 13 - - ASI asi*.erp 10 9 - 0 - - 20 61137.50 to 61160.50 14 32 - 34 - - MIT MIT0OPSFIN 10 10 - 1 - - 29 61132.50 to 61160.50 39 34 - 17 - - IGS * IGS0OPSRAP 8 8 - 2 - - 29 61132.50 to 61160.50 27 33 - 13 - - IGS * IGS0OPSFIN 6 6 - 2 - - 29 61132.50 to 61160.50 25 23 - 13 - - SLR MCC tg*.02 201 253 - 32 - - 30 61132.00 to 61161.00 145 196 - 181 - - IAA slr_v.dat 75 93 - 4 - - 29 61132.00 to 61161.00 249 340 - 30 - - ASI asi.*.eop 53 73 - 17 - - 29 61132.50 to 61160.50 174 287 - 76 - - ILRS * ilrsa.eop 48 58 - 11 - - 29 61132.50 to 61160.50 157 228 - 38 - - BULLETIN A NEOS mark3.out 15 16 10 - - - 30 61132.00 to 61161.00 42 36 16 - - - To unsubscribe : http://hpiers.obspm.fr/eop-pc/products/bulletins/bulletin_registration.html