BULLETIN B 457 2 March 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 0.042 0.037 0.0253 0.387 0.904 2026 1 2 61042 109.623 332.564 74.1827 0.351 -0.013 0.054 0.045 0.0147 0.090 0.090 2026 1 3 61043 108.235 333.533 74.3754 0.375 -0.013 0.042 0.037 0.0123 0.090 0.090 2026 1 4 61044 106.865 334.552 74.5122 0.396 -0.023 0.034 0.031 0.0116 0.091 0.091 2026 1 5 61045 105.572 335.529 74.4093 0.411 -0.037 0.031 0.029 0.0123 0.099 0.104 2026 1 6 61046 103.998 336.287 74.0508 0.417 -0.045 0.040 0.038 0.0136 0.103 0.110 2026 1 7 61047 102.558 336.911 73.5047 0.401 -0.031 0.040 0.036 0.0134 0.103 0.110 2026 1 8 61048 101.147 337.467 72.8595 0.375 -0.006 0.039 0.035 0.0131 0.110 0.119 2026 1 9 61049 100.607 337.760 72.2566 0.346 0.022 0.041 0.035 0.0132 0.111 0.120 2026 1 10 61050 100.548 338.590 71.7719 0.334 0.039 0.040 0.035 0.0118 0.111 0.121 2026 1 11 61051 100.520 339.389 71.4649 0.334 0.048 0.040 0.035 0.0115 0.238 1.044 2026 1 12 61052 100.280 340.027 71.3712 0.341 0.051 0.041 0.036 0.0201 1.040 6.918 2026 1 13 61053 99.840 340.591 71.4581 0.355 0.049 0.040 0.036 0.0736 1.043 6.933 2026 1 14 61054 99.300 340.921 71.7242 0.378 0.041 0.040 0.034 0.1213 1.036 6.864 2026 1 15 61055 98.571 341.277 72.1413 0.403 0.028 0.041 0.035 0.0872 0.535 1.545 2026 1 16 61056 97.250 341.706 72.6961 0.427 0.012 0.044 0.034 0.0899 0.431 0.436 2026 1 17 61057 96.044 341.942 73.3210 0.437 -0.005 0.043 0.034 0.0276 0.431 0.434 2026 1 18 61058 94.855 342.662 73.8846 0.436 -0.023 0.045 0.035 0.0124 0.397 0.400 2026 1 19 61059 93.371 343.352 74.2854 0.429 -0.039 0.046 0.038 0.0087 0.087 0.093 2026 1 20 61060 92.287 344.585 74.3723 0.417 -0.052 0.048 0.042 0.0088 0.086 0.092 2026 1 21 61061 91.602 346.059 74.1836 0.398 -0.058 0.042 0.034 0.0098 0.086 0.092 2026 1 22 61062 91.282 347.597 73.7307 0.377 -0.059 0.044 0.037 0.0113 0.100 0.106 2026 1 23 61063 91.116 349.328 73.0468 0.358 -0.060 0.045 0.039 0.0124 0.104 0.110 2026 1 24 61064 91.561 350.645 72.2468 0.349 -0.063 0.045 0.042 0.0127 0.104 0.110 2026 1 25 61065 91.972 352.411 71.4965 0.348 -0.067 0.044 0.043 0.0142 0.234 0.149 2026 1 26 61066 91.839 353.665 70.9164 0.355 -0.071 0.044 0.043 0.0213 1.131 0.416 2026 1 27 61067 91.907 354.782 70.5460 0.371 -0.074 0.045 0.043 0.0362 1.133 0.416 2026 1 28 61068 92.090 356.089 70.3822 0.403 -0.075 0.044 0.043 0.0263 1.123 0.414 2026 1 29 61069 91.814 357.447 70.4269 0.441 -0.073 0.045 0.044 0.0173 0.282 0.157 2026 1 30 61070 91.642 358.822 70.5811 0.476 -0.069 0.046 0.044 0.0168 0.096 0.100 2026 1 31 61071 91.721 360.218 70.6983 0.489 -0.062 0.047 0.043 0.0154 0.096 0.100 2026 2 1 61072 91.844 361.528 70.6803 0.485 -0.053 0.040 0.037 0.0139 1.302 0.167 Preliminary extension 2026 2 2 61073 91.990 362.449 70.4028 0.474 -0.041 0.038 0.035 0.0214 9.933 0.649 2026 2 3 61074 91.889 363.520 69.9153 0.458 -0.027 0.036 0.034 0.0448 9.961 0.651 2026 2 4 61075 92.095 364.341 69.2975 0.443 -0.009 0.035 0.034 0.0259 9.865 0.646 2026 2 5 61076 92.328 365.707 68.6048 0.430 0.009 0.035 0.034 0.0143 1.831 0.199 2026 2 6 61077 92.723 367.128 67.9790 0.421 0.026 0.036 0.034 0.0112 0.106 0.103 2026 2 7 61078 93.302 368.415 67.5139 0.433 0.037 0.036 0.034 0.0085 0.102 0.103 2026 2 8 61079 93.869 369.230 67.2407 0.456 0.043 0.037 0.034 0.0065 0.097 0.101 2026 2 9 61080 95.367 369.930 67.1629 0.478 0.045 0.037 0.034 0.0070 0.064 0.086 2026 2 10 61081 96.899 371.390 67.3090 0.491 0.043 0.037 0.034 0.0093 0.065 0.097 2026 2 11 61082 98.471 372.783 67.6525 0.483 0.025 0.037 0.034 0.0128 0.074 0.160 2026 2 12 61083 99.681 374.341 68.1405 0.491 0.089 0.036 0.034 0.0199 0.099 0.180 2026 2 13 61084 100.504 375.436 68.6796 0.524 0.239 0.036 0.035 0.0157 0.168 0.087 2026 2 14 61085 101.241 376.829 69.2247 0.612 0.244 0.036 0.035 0.0085 0.177 0.074 2026 2 15 61086 101.483 377.891 69.6815 0.697 0.127 0.039 0.037 0.0075 0.165 0.075 2026 2 16 61087 101.835 378.401 69.9477 0.693 -0.003 0.043 0.040 0.0083 0.086 0.091 2026 2 17 61088 102.573 379.511 69.9103 0.525 -0.078 0.044 0.041 0.0092 0.092 0.097 2026 2 18 61089 103.137 380.825 69.5886 0.370 -0.225 0.044 0.041 0.0099 0.500 0.500 2026 2 19 61090 103.832 381.646 69.0067 0.357 -0.230 0.044 0.041 0.0110 0.500 0.500 2026 2 20 61091 104.899 382.338 68.3041 0.345 -0.221 0.044 0.041 0.0104 0.500 0.500 2026 2 21 61092 105.911 383.448 67.6181 0.339 -0.201 0.044 0.042 0.0086 0.500 0.500 2026 2 22 61093 106.720 384.693 67.0510 0.339 -0.176 0.044 0.042 0.0076 0.500 0.500 2026 2 23 61094 107.242 385.907 66.6048 0.346 -0.155 0.045 0.042 0.0104 0.500 0.500 2026 2 24 61095 107.495 386.542 66.3943 0.354 -0.143 0.046 0.043 0.0165 0.500 0.500 2026 2 25 61096 106.936 387.209 66.4561 0.363 -0.143 0.046 0.043 0.0200 0.500 0.500 2026 2 26 61097 105.977 387.783 66.7237 0.371 -0.152 0.046 0.043 0.0231 0.500 0.500 2026 2 27 61098 105.579 387.938 67.0281 0.380 -0.164 0.046 0.043 0.0257 0.500 0.500 2026 2 28 61099 105.469 388.393 67.2225 0.387 -0.170 0.046 0.043 0.0295 0.500 0.500 2026 3 1 61100 105.028 389.093 67.1883 0.392 -0.168 0.053 0.051 0.0323 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 1 2 61042 -114.994 -7.279 0.227 0.090 2026 1 3 61043 -114.457 -7.302 0.227 0.090 2026 1 4 61044 -113.996 -7.109 0.228 0.091 2026 1 5 61045 -113.679 -6.954 0.249 0.104 2026 1 6 61046 -113.434 -6.955 0.259 0.110 2026 1 7 61047 -113.379 -6.980 0.259 0.110 2026 1 8 61048 -113.657 -6.921 0.277 0.119 2026 1 9 61049 -114.183 -6.849 0.280 0.120 2026 1 10 61050 -114.625 -6.891 0.280 0.121 2026 1 11 61051 -114.808 -7.019 0.597 1.044 2026 1 12 61052 -114.791 -7.111 2.615 6.918 2026 1 13 61053 -114.680 -7.130 2.621 6.933 2026 1 14 61054 -114.502 -7.176 2.604 6.864 2026 1 15 61055 -114.314 -7.333 1.346 1.545 2026 1 16 61056 -114.214 -7.538 1.084 0.436 2026 1 17 61057 -114.254 -7.633 1.083 0.434 2026 1 18 61058 -114.306 -7.541 0.998 0.400 2026 1 19 61059 -114.222 -7.351 0.219 0.093 2026 1 20 61060 -114.027 -7.219 0.216 0.092 2026 1 21 61061 -113.891 -7.214 0.217 0.092 2026 1 22 61062 -113.917 -7.293 0.252 0.106 2026 1 23 61063 -114.057 -7.367 0.261 0.110 2026 1 24 61064 -114.208 -7.385 0.262 0.110 2026 1 25 61065 -114.354 -7.340 0.588 0.149 2026 1 26 61066 -114.540 -7.261 2.842 0.416 2026 1 27 61067 -114.766 -7.216 2.849 0.416 2026 1 28 61068 -114.917 -7.296 2.824 0.414 2026 1 29 61069 -114.887 -7.527 0.708 0.157 2026 1 30 61070 -114.623 -7.793 0.240 0.100 2026 1 31 61071 -114.226 -7.917 0.241 0.100 2026 2 1 61072 -113.793 -7.836 3.272 0.167 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 1 2 61042 -0.1620 0.0155 15.04106720687 0.00000000270 2026 1 3 61043 -0.1956 0.0106 15.04106721272 0.00000000185 2026 1 4 61044 -0.0439 0.0100 15.04106718631 0.00000000174 2026 1 5 61045 0.2351 0.0091 15.04106713774 0.00000000158 2026 1 6 61046 0.4711 0.0078 15.04106709666 0.00000000136 2026 1 7 61047 0.6125 0.0062 15.04106707204 0.00000000108 2026 1 8 61048 0.6462 0.0066 15.04106706618 0.00000000115 2026 1 9 61049 0.5561 0.0080 15.04106708186 0.00000000139 2026 1 10 61050 0.4054 0.0082 15.04106710810 0.00000000143 2026 1 11 61051 0.1980 0.0118 15.04106714420 0.00000000205 2026 1 12 61052 -0.0022 0.0089 15.04106717905 0.00000000155 2026 1 13 61053 -0.1780 0.0076 15.04106720966 0.00000000132 2026 1 14 61054 -0.3483 0.0067 15.04106723930 0.00000000117 2026 1 15 61055 -0.4911 0.0069 15.04106726416 0.00000000120 2026 1 16 61056 -0.6061 0.0080 15.04106728418 0.00000000139 2026 1 17 61057 -0.6180 0.0072 15.04106728626 0.00000000125 2026 1 18 61058 -0.5015 0.0085 15.04106726597 0.00000000148 2026 1 19 61059 -0.2692 0.0086 15.04106722553 0.00000000150 2026 1 20 61060 0.0667 0.0082 15.04106716706 0.00000000143 2026 1 21 61061 0.3257 0.0076 15.04106712197 0.00000000132 2026 1 22 61062 0.5760 0.0086 15.04106707840 0.00000000150 2026 1 23 61063 0.7617 0.0090 15.04106704607 0.00000000157 2026 1 24 61064 0.8038 0.0079 15.04106703874 0.00000000138 2026 1 25 61065 0.6849 0.0091 15.04106705944 0.00000000158 2026 1 26 61066 0.4781 0.0088 15.04106709544 0.00000000153 2026 1 27 61067 0.2596 0.0087 15.04106713348 0.00000000151 2026 1 28 61068 0.0567 0.0069 15.04106716880 0.00000000120 2026 1 29 61069 -0.1180 0.0069 15.04106719921 0.00000000120 2026 1 30 61070 -0.1657 0.0080 15.04106720752 0.00000000139 2026 1 31 61071 -0.0615 0.0069 15.04106718938 0.00000000120 2026 2 1 61072 0.1328 0.0066 15.04106715555 0.00000000115 4 - INFORMATION ON TIME SCALES TAI - UTC = 37 s. during period [61042-61072] No leap second introduced during period [61042-61072] 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 38 45 2 - 26 27 11 61046.21 to 61070.27 85 78 25 - 32 42 GSFC gsf2023a.eoxy 46 49 3 5 27 28 12 61046.21 to 61070.27 125 166 31 8 48 68 IAA iaa2021a.eops 175 223 11 - 139 142 12 61046.21 to 61070.27 344 370 50 - 61 90 USNO usn2025b.eoxy 48 53 3 - 44 46 10 61043.53 to 61070.27 73 215 26 - 58 29 IVS * ivs2025a.eoxy 172 240 14 - 137 139 8 61046.20 to 61070.30 75 97 8 - 2 2 ASI asi2023a.eoxy 76 111 11 - 161 93 9 61046.21 to 61067.21 2961 2233 112 - 161 170 VIE vie2023a.eopxy 461 555 31 - - - 17 61046.00 to 61071.00 460 499 21 - - - VIE vie2023a.eoxy - - - - 36 32 10 61046.21 to 61070.27 - - - - 32 39 VLBI Intensive GSI * gsiint2d.eopi - - 12 - - - 9 61043.33 to 61071.33 - - 34 - - - BKG * bkg2025b.eopi - - 13 - - - 68 61042.75 to 61071.33 - - 48 - - - GSFC * gsf2023a.eopi - - 13 - - - 69 61042.75 to 61071.33 - - 64 - - - IAA * iaa2021a.eopi - - 13 - - - 73 61042.75 to 61071.33 - - 48 - - - IAA * iaaq.eopi - - 30 - - - 30 61042.21 to 61071.31 - - 74 - - - USNO * usn2025b.eopi - - 13 - - - 59 61042.75 to 61071.33 - - 44 - - - VIE vie2023a.eopi - - 8 - - - 75 61042.75 to 61071.33 - - 68 - - - GPS CODE COD0OPSFIN 3 3 - 0 - - 30 61042.50 to 61071.50 38 21 - 14 - - JPL JPL0OPSFIN 5 5 - 3 - - 30 61042.50 to 61071.50 47 32 - 17 - - GFZ GFZ0OPSFIN 5 6 - 1 - - 30 61042.50 to 61071.50 115 27 - 13 - - ESA ESA0OPSFIN 5 5 - 1 - - 30 61042.50 to 61071.50 34 27 - 14 - - SIO SIO0OPSFIN 28 27 - 11 - - 30 61042.50 to 61071.50 45 35 - 14 - - EMR EMR0OPSRAP 3 3 - 0 - - 30 61042.50 to 61071.50 55 39 - 19 - - IAA gnss.res 0 0 - 0 - - 19 61043.50 to 61071.50 94 86 - 23 - - GRGS GRG0OPSFIN 265 265 - 0 - - 30 61042.50 to 61071.50 33 27 - 13 - - ASI asi*.erp 10 10 - 0 - - 6 61042.50 to 61047.50 20 20 - 43 - - MIT MIT0OPSFIN 10 10 - 1 - - 30 61042.50 to 61071.50 57 37 - 18 - - IGS * IGS0OPSRAP 12 7 - 3 - - 30 61042.50 to 61071.50 37 21 - 14 - - IGS * IGS0OPSFIN 7 6 - 1 - - 30 61042.50 to 61071.50 29 26 - 12 - - SLR MCC tg*.02 263 365 - 41 - - 31 61042.00 to 61072.00 265 441 - 53 - - IAA slr_v.dat 94 103 - 6 - - 29 61042.00 to 61072.00 284 251 - 26 - - ASI asi.*.eop 64 62 - 16 - - 30 61042.50 to 61071.50 189 185 - 82 - - ILRS * ilrsa.eop 61 56 - 10 - - 30 61042.50 to 61071.50 152 158 - 30 - - BULLETIN A NEOS mark3.out 11 14 10 - - - 31 61042.00 to 61072.00 35 37 23 - - - To unsubscribe : http://hpiers.obspm.fr/eop-pc/products/bulletins/bulletin_registration.html