BULLETIN B 443 1 January 2025 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 0.054 0.042 0.0288 0.082 0.297 2024 11 2 60616 214.682 364.212 53.5106 0.410 0.140 0.055 0.042 0.1151 0.208 2.752 2024 11 3 60617 213.602 363.748 53.5913 0.379 0.126 0.058 0.044 0.0745 0.167 2.001 2024 11 4 60618 212.736 362.389 53.8071 0.353 0.099 0.057 0.043 0.0455 0.121 1.161 2024 11 5 60619 211.992 361.181 54.1753 0.342 0.060 0.055 0.042 0.0421 0.088 0.561 2024 11 6 60620 211.191 359.886 54.6158 0.386 -0.002 0.054 0.042 0.0354 0.082 0.402 2024 11 7 60621 210.002 358.387 55.0310 0.448 -0.069 0.052 0.042 0.0344 0.078 0.279 2024 11 8 60622 208.848 356.576 55.3117 0.504 -0.131 0.050 0.042 0.0343 0.075 0.170 2024 11 9 60623 208.095 354.565 55.3478 0.499 -0.164 0.051 0.042 0.0301 0.073 0.136 2024 11 10 60624 207.915 352.742 55.0691 0.457 -0.175 0.050 0.041 0.0223 0.070 0.112 2024 11 11 60625 207.542 351.146 54.5612 0.409 -0.172 0.051 0.041 0.0196 0.067 0.085 2024 11 12 60626 207.345 349.439 53.8315 0.369 -0.161 0.053 0.041 0.0188 0.065 0.065 2024 11 13 60627 206.770 348.049 53.0007 0.387 -0.145 0.054 0.040 0.0182 0.066 0.060 2024 11 14 60628 206.348 346.530 52.2238 0.428 -0.127 0.056 0.041 0.0174 0.067 0.056 2024 11 15 60629 205.905 345.665 51.6504 0.469 -0.109 0.059 0.041 0.0164 0.069 0.053 2024 11 16 60630 205.027 344.519 51.3711 0.480 -0.103 0.059 0.042 0.0150 0.068 0.052 2024 11 17 60631 204.446 343.457 51.3720 0.470 -0.103 0.060 0.041 0.0159 0.064 0.050 2024 11 18 60632 203.238 342.499 51.6132 0.453 -0.106 0.060 0.041 0.0173 0.061 0.048 2024 11 19 60633 202.611 340.942 51.9418 0.433 -0.108 0.058 0.042 0.0206 0.058 0.047 2024 11 20 60634 202.646 339.844 52.2396 0.421 -0.102 0.056 0.043 0.0256 0.068 0.054 2024 11 21 60635 202.859 338.864 52.3773 0.413 -0.093 0.054 0.043 0.0283 0.085 0.066 2024 11 22 60636 202.982 338.377 52.3072 0.411 -0.083 0.055 0.044 0.0253 0.100 0.076 2024 11 23 60637 202.521 337.841 52.0550 0.435 -0.077 0.053 0.044 0.0221 0.098 0.075 2024 11 24 60638 201.364 337.334 51.6273 0.469 -0.073 0.054 0.044 0.0202 0.087 0.069 2024 11 25 60639 199.716 336.586 51.1134 0.494 -0.068 0.053 0.044 0.0205 0.074 0.062 2024 11 26 60640 198.189 335.570 50.5678 0.500 -0.060 0.053 0.043 0.0224 0.066 0.057 2024 11 27 60641 196.688 334.238 50.0537 0.434 -0.042 0.053 0.044 0.0253 0.068 0.063 2024 11 28 60642 195.748 332.682 49.6712 0.344 -0.023 0.053 0.044 0.0265 0.073 0.074 2024 11 29 60643 195.158 331.327 49.4657 0.262 -0.007 0.053 0.045 0.0239 0.078 0.083 2024 11 30 60644 194.583 329.987 49.4296 0.252 -0.006 0.052 0.045 0.0203 0.076 0.081 2024 12 1 60645 193.681 328.684 49.5625 0.288 -0.017 0.053 0.046 0.0102 0.069 0.073 Preliminary extension 2024 12 2 60646 192.208 327.532 49.8472 0.341 -0.034 0.057 0.044 0.0103 0.062 0.064 2024 12 3 60647 190.495 326.394 50.2131 0.400 -0.057 0.052 0.040 0.0104 0.057 0.058 2024 12 4 60648 188.733 325.093 50.6086 0.431 -0.084 0.048 0.037 0.0091 0.063 0.066 2024 12 5 60649 186.790 323.722 50.9435 0.450 -0.114 0.046 0.036 0.0076 0.074 0.081 2024 12 6 60650 185.101 322.048 51.1493 0.467 -0.142 0.045 0.035 0.0067 0.084 0.093 2024 12 7 60651 183.482 320.306 51.1494 0.602 -0.213 0.043 0.035 0.0062 0.097 0.105 2024 12 8 60652 181.856 318.727 50.8726 0.744 -0.282 0.043 0.035 0.0059 0.116 0.122 2024 12 9 60653 180.221 317.437 50.3495 0.768 -0.300 0.042 0.035 0.0058 0.131 0.136 2024 12 10 60654 178.694 316.091 49.6711 0.593 -0.236 0.042 0.035 0.0058 0.139 0.143 2024 12 11 60655 177.526 315.111 48.9748 0.289 -0.061 0.042 0.035 0.0057 0.500 0.500 2024 12 12 60656 176.579 314.517 48.4003 0.281 -0.061 0.043 0.036 0.0056 0.500 0.500 2024 12 13 60657 175.377 313.964 48.0504 0.281 -0.062 0.044 0.036 0.0056 0.500 0.500 2024 12 14 60658 173.860 313.244 47.9701 0.289 -0.061 0.046 0.038 0.0058 0.500 0.500 2024 12 15 60659 172.226 312.196 48.1100 0.301 -0.060 0.049 0.040 0.0060 0.500 0.500 2024 12 16 60660 170.393 311.404 48.3840 0.314 -0.061 0.052 0.042 0.0064 0.500 0.500 2024 12 17 60661 168.636 310.694 48.6699 0.323 -0.065 0.054 0.043 0.0068 0.500 0.500 2024 12 18 60662 166.931 310.229 48.8306 0.329 -0.071 0.056 0.044 0.0074 0.500 0.500 2024 12 19 60663 165.895 309.658 48.7670 0.332 -0.076 0.057 0.044 0.0083 0.500 0.500 2024 12 20 60664 164.837 309.697 48.4748 0.335 -0.078 0.057 0.044 0.0090 0.500 0.500 2024 12 21 60665 163.581 309.801 48.0199 0.338 -0.074 0.057 0.044 0.0080 0.500 0.500 2024 12 22 60666 162.424 309.754 47.4762 0.339 -0.068 0.057 0.044 0.0078 0.500 0.500 2024 12 23 60667 161.197 309.918 46.8573 0.338 -0.062 0.058 0.044 0.0090 0.500 0.500 2024 12 24 60668 159.653 310.072 46.2697 0.335 -0.061 0.059 0.045 0.0115 0.500 0.500 2024 12 25 60669 156.955 309.764 45.7886 0.330 -0.066 0.059 0.046 0.0157 0.500 0.500 2024 12 26 60670 153.991 308.890 45.4344 0.325 -0.076 0.059 0.048 0.0218 0.500 0.500 2024 12 27 60671 151.204 307.962 45.2403 0.323 -0.088 0.059 0.051 0.0274 0.500 0.500 2024 12 28 60672 149.040 306.984 45.2294 0.323 -0.098 0.059 0.054 0.0265 0.500 0.500 2024 12 29 60673 147.626 306.285 45.3774 0.326 -0.106 0.061 0.058 0.0246 0.500 0.500 2024 12 30 60674 146.365 305.765 45.6261 0.329 -0.112 0.063 0.063 0.0237 0.500 0.500 2024 12 31 60675 145.104 305.372 45.9364 0.332 -0.119 0.066 0.071 0.0240 0.500 0.500 2025 1 1 60676 144.007 304.970 46.1939 0.333 -0.127 0.074 0.087 0.0256 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 11 2 60616 -116.404 -7.843 0.522 2.752 2024 11 3 60617 -116.521 -8.127 0.419 2.001 2024 11 4 60618 -116.478 -8.224 0.304 1.161 2024 11 5 60619 -116.246 -8.214 0.222 0.561 2024 11 6 60620 -115.831 -8.225 0.205 0.402 2024 11 7 60621 -115.415 -8.275 0.196 0.279 2024 11 8 60622 -115.039 -8.323 0.188 0.170 2024 11 9 60623 -114.795 -8.329 0.183 0.136 2024 11 10 60624 -114.633 -8.280 0.176 0.112 2024 11 11 60625 -114.580 -8.107 0.168 0.085 2024 11 12 60626 -114.735 -7.762 0.163 0.065 2024 11 13 60627 -114.996 -7.389 0.165 0.060 2024 11 14 60628 -115.221 -7.243 0.169 0.056 2024 11 15 60629 -115.155 -7.378 0.173 0.053 2024 11 16 60630 -114.881 -7.565 0.170 0.052 2024 11 17 60631 -114.697 -7.586 0.161 0.050 2024 11 18 60632 -114.752 -7.529 0.152 0.048 2024 11 19 60633 -114.815 -7.596 0.145 0.047 2024 11 20 60634 -114.614 -7.750 0.170 0.054 2024 11 21 60635 -114.254 -7.754 0.214 0.066 2024 11 22 60636 -114.012 -7.489 0.252 0.076 2024 11 23 60637 -113.907 -7.107 0.247 0.075 2024 11 24 60638 -113.842 -6.819 0.219 0.069 2024 11 25 60639 -113.772 -6.667 0.187 0.062 2024 11 26 60640 -113.752 -6.554 0.165 0.057 2024 11 27 60641 -113.938 -6.427 0.170 0.063 2024 11 28 60642 -114.190 -6.386 0.184 0.074 2024 11 29 60643 -114.445 -6.537 0.196 0.083 2024 11 30 60644 -114.581 -6.837 0.191 0.081 2024 12 1 60645 -114.608 -7.097 0.174 0.073 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 11 2 60616 0.0095 0.0244 15.04106717702 0.00000000425 2024 11 3 60617 -0.1599 0.0246 15.04106720651 0.00000000428 2024 11 4 60618 -0.2835 0.0253 15.04106722802 0.00000000440 2024 11 5 60619 -0.4047 0.0257 15.04106724912 0.00000000447 2024 11 6 60620 -0.4520 0.0264 15.04106725736 0.00000000460 2024 11 7 60621 -0.3684 0.0260 15.04106724280 0.00000000453 2024 11 8 60622 -0.1781 0.0264 15.04106720968 0.00000000460 2024 11 9 60623 0.1115 0.0262 15.04106715926 0.00000000456 2024 11 10 60624 0.4004 0.0313 15.04106710897 0.00000000545 2024 11 11 60625 0.6260 0.0299 15.04106706969 0.00000000521 2024 11 12 60626 0.8048 0.0282 15.04106703857 0.00000000491 2024 11 13 60627 0.8275 0.0276 15.04106703461 0.00000000480 2024 11 14 60628 0.6951 0.0273 15.04106705766 0.00000000475 2024 11 15 60629 0.4218 0.0368 15.04106710524 0.00000000641 2024 11 16 60630 0.1244 0.0263 15.04106715701 0.00000000458 2024 11 17 60631 -0.1307 0.0261 15.04106720142 0.00000000454 2024 11 18 60632 -0.3083 0.0281 15.04106723234 0.00000000489 2024 11 19 60633 -0.3376 0.0266 15.04106723744 0.00000000463 2024 11 20 60634 -0.2341 0.0260 15.04106721942 0.00000000453 2024 11 21 60635 -0.0349 0.0241 15.04106718475 0.00000000420 2024 11 22 60636 0.1662 0.0230 15.04106714974 0.00000000400 2024 11 23 60637 0.3428 0.0223 15.04106711899 0.00000000388 2024 11 24 60638 0.4858 0.0229 15.04106709410 0.00000000399 2024 11 25 60639 0.5389 0.0228 15.04106708486 0.00000000397 2024 11 26 60640 0.5416 0.0230 15.04106708439 0.00000000400 2024 11 27 60641 0.4639 0.0233 15.04106709791 0.00000000406 2024 11 28 60642 0.2992 0.0234 15.04106712658 0.00000000407 2024 11 29 60643 0.1172 0.0240 15.04106715827 0.00000000418 2024 11 30 60644 -0.0509 0.0237 15.04106718753 0.00000000413 2024 12 1 60645 -0.2187 0.0262 15.04106721674 0.00000000456 4 - INFORMATION ON TIME SCALES TAI - UTC = 37 s. during period [60616-60645] No leap second introduced during period [60616-60645] 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 GSFC gsf2023a.eoxy 60 64 4 12 49 44 10 60619.21 to 60643.27 88 147 19 10 85 47 IAA iaa2021a.eops 84 89 5 - 95 87 10 60619.21 to 60643.27 116 200 27 - 78 34 USNO usn2024a.eoxy 64 62 3 - 61 55 8 60619.21 to 60643.27 126 129 26 - 71 61 OPA opa2024a.eops 153 249 20 - 59 141 9 60619.21 to 60643.27 1189 3669 167 - 97 230 IVS * ivs2023a.eoxy 56 88 3 - 44 39 7 60619.21 to 60640.21 125 143 20 - 9 2 ASI asi2023a.eoxy 181 196 17 - 133 137 9 60619.21 to 60643.27 159 329 32 - 160 124 VIE vie2023a.eopxy 257 434 29 - - - 16 60616.00 to 60644.00 1012 2164 31 - - - VIE vie2023a.eoxy - - - - 49 59 8 60619.21 to 60643.27 - - - - 114 48 VLBI Intensive GSI * gsiint2d.eopi - - 7 - - - 9 60616.33 to 60644.33 - - 34 - - - BKG * bkg2023b.eopi - - 10 - - - 56 60616.25 to 60644.33 - - 37 - - - GSFC * gsf2023a.eopi - - 9 - - - 75 60616.25 to 60644.40 - - 34 - - - IAA * iaa2021a.eopi - - 10 - - - 76 60616.25 to 60644.40 - - 47 - - - USNO * usn2024a.eopi - - 10 - - - 64 60616.25 to 60644.40 - - 37 - - - VIE vie2023a.eopi - - 9 - - - 77 60616.25 to 60644.40 - - 37 - - - DGFI dgf2024a.eopi - - 9 - - - 35 60616.25 to 60644.33 - - 32 - - - GPS CODE COD0OPSFIN 3 3 - 0 - - 29 60616.50 to 60644.50 37 30 - 13 - - JPL JPL0OPSFIN 5 5 - 3 - - 29 60616.50 to 60644.50 52 39 - 20 - - GFZ GFZ0OPSFIN 4 4 - 1 - - 29 60616.50 to 60644.50 40 38 - 12 - - ESA ESA0OPSFIN 5 6 - 2 - - 29 60616.50 to 60644.50 37 32 - 11 - - SIO SIO0OPSFIN 25 24 - 10 - - 29 60616.50 to 60644.50 57 36 - 16 - - EMR EMR0OPSRAP 3 3 - 0 - - 29 60616.50 to 60644.50 61 43 - 14 - - IAA gnss.res 0 0 - 0 - - 29 60616.50 to 60644.50 65 75 - 24 - - GRGS GRG0OPSFIN 265 265 - 0 - - 29 60616.50 to 60644.50 36 31 - 12 - - ASI asi*.erp 10 9 - 0 - - 15 60616.50 to 60637.50 21 22 - 40 - - MIT MIT0OPSFIN 10 10 - 1 - - 29 60616.50 to 60644.50 56 40 - 16 - - IGS * IGS0OPSRAP 11 9 - 3 - - 29 60616.50 to 60644.50 39 28 - 13 - - IGS * IGS0OPSFIN 8 7 - 2 - - 29 60616.50 to 60644.50 38 29 - 11 - - SLR MCC tg*.02 222 268 - 41 - - 30 60616.00 to 60645.00 140 155 - 148 - - IAA slr_v.dat 78 93 - 6 - - 29 60616.00 to 60645.00 250 234 - 23 - - ASI asi.*.eop 55 63 - 15 - - 29 60616.50 to 60644.50 162 209 - 48 - - ILRS * ilrsa.eop 41 44 - 8 - - 29 60616.50 to 60644.50 105 121 - 33 - - BULLETIN A NEOS mark3.out 15 17 9 - - - 30 60616.00 to 60645.00 38 40 18 - - - To unsubscribe : http://hpiers.obspm.fr/eop-pc/products/bulletins/bulletin_registration.html