BULLETIN B 421 2 March 2023 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 0.028 0.023 0.0093 0.065 0.061 2023 1 2 59946 59.003 201.796 -19.9243 0.263 -0.072 0.025 0.022 0.0092 0.062 0.055 2023 1 3 59947 55.638 202.514 -19.8250 0.238 -0.061 0.025 0.023 0.0088 0.062 0.056 2023 1 4 59948 52.933 202.990 -19.5007 0.213 -0.050 0.025 0.023 0.0088 0.062 0.056 2023 1 5 59949 50.795 203.830 -19.0232 0.289 -0.184 0.025 0.022 0.0086 0.062 0.056 2023 1 6 59950 48.795 205.101 -18.4663 0.325 -0.221 0.025 0.022 0.0090 0.062 0.055 2023 1 7 59951 46.853 206.221 -17.9143 0.338 -0.209 0.026 0.022 0.0090 0.062 0.053 2023 1 8 59952 45.146 207.590 -17.4487 0.351 -0.197 0.026 0.022 0.0090 0.062 0.052 2023 1 9 59953 43.370 209.111 -17.1274 0.364 -0.185 0.026 0.022 0.0093 0.062 0.050 2023 1 10 59954 41.325 210.288 -16.9671 0.377 -0.172 0.026 0.022 0.0092 0.061 0.049 2023 1 11 59955 38.979 211.134 -16.9747 0.354 -0.142 0.026 0.022 0.0094 0.062 0.050 2023 1 12 59956 36.547 211.915 -17.0559 0.322 -0.108 0.026 0.022 0.0088 0.062 0.053 2023 1 13 59957 34.173 213.022 -17.2046 0.290 -0.073 0.026 0.022 0.0086 0.063 0.055 2023 1 14 59958 31.810 214.393 -17.3877 0.278 -0.070 0.026 0.022 0.0086 0.064 0.057 2023 1 15 59959 29.351 216.047 -17.5710 0.273 -0.078 0.026 0.023 0.0086 0.064 0.059 2023 1 16 59960 26.882 217.923 -17.7110 0.269 -0.087 0.026 0.023 0.0091 0.065 0.061 2023 1 17 59961 24.343 220.214 -17.7400 0.264 -0.096 0.026 0.023 0.0092 0.065 0.063 2023 1 18 59962 21.681 222.504 -17.5873 0.273 -0.097 0.027 0.023 0.0092 0.066 0.065 2023 1 19 59963 19.078 224.261 -17.2362 0.285 -0.097 0.027 0.023 0.0090 0.066 0.066 2023 1 20 59964 16.715 225.678 -16.7521 0.296 -0.097 0.028 0.024 0.0094 0.066 0.068 2023 1 21 59965 14.033 226.892 -16.1896 0.273 -0.090 0.029 0.024 0.0095 0.067 0.069 2023 1 22 59966 10.879 227.740 -15.6593 0.237 -0.079 0.029 0.024 0.0096 0.067 0.069 2023 1 23 59967 7.728 228.830 -15.3087 0.200 -0.069 0.030 0.024 0.0095 0.068 0.070 2023 1 24 59968 5.300 230.244 -15.2158 0.164 -0.059 0.031 0.024 0.0096 0.068 0.070 2023 1 25 59969 3.852 231.401 -15.3642 0.186 -0.093 0.031 0.024 0.0097 0.068 0.070 2023 1 26 59970 2.927 233.231 -15.6349 0.223 -0.138 0.032 0.025 0.0097 0.069 0.070 2023 1 27 59971 1.593 235.918 -15.8886 0.259 -0.183 0.033 0.025 0.0097 0.069 0.070 2023 1 28 59972 0.279 238.107 -15.9862 0.305 -0.189 0.034 0.025 0.0098 0.069 0.070 2023 1 29 59973 -0.230 240.378 -15.8927 0.354 -0.178 0.032 0.023 0.0099 0.070 0.070 2023 1 30 59974 -0.925 242.670 -15.6444 0.403 -0.167 0.032 0.024 0.0111 0.070 0.069 2023 1 31 59975 -1.326 244.961 -15.2262 0.452 -0.156 0.037 0.027 0.0104 0.070 0.069 2023 2 1 59976 -2.296 247.864 -14.6010 0.437 -0.158 0.037 0.027 0.0101 0.071 0.068 Preliminary extension 2023 2 2 59977 -3.540 250.343 -13.8593 0.405 -0.162 0.036 0.027 0.0101 0.071 0.066 2023 2 3 59978 -4.857 252.571 -13.0960 0.374 -0.167 0.036 0.027 0.0100 0.071 0.065 2023 2 4 59979 -6.424 254.282 -12.4189 0.350 -0.164 0.036 0.026 0.0099 0.071 0.063 2023 2 5 59980 -8.206 255.920 -11.8777 0.329 -0.158 0.036 0.026 0.0098 0.071 0.061 2023 2 6 59981 -9.962 257.732 -11.4958 0.308 -0.153 0.036 0.026 0.0098 0.071 0.060 2023 2 7 59982 -11.874 259.653 -11.2745 0.287 -0.147 0.036 0.026 0.0097 0.071 0.058 2023 2 8 59983 -14.172 261.670 -11.1959 0.305 -0.124 0.036 0.026 0.0098 0.072 0.058 2023 2 9 59984 -15.815 263.431 -11.2447 0.334 -0.096 0.036 0.026 0.0099 0.072 0.058 2023 2 10 59985 -16.685 265.519 -11.4723 0.363 -0.068 0.037 0.026 0.0099 0.073 0.058 2023 2 11 59986 -17.796 268.041 -11.7909 0.361 -0.076 0.037 0.026 0.0101 0.073 0.059 2023 2 12 59987 -19.574 270.402 -12.1314 0.349 -0.096 0.037 0.026 0.0102 0.074 0.060 2023 2 13 59988 -21.948 273.140 -12.3636 0.337 -0.117 0.037 0.026 0.0103 0.074 0.061 2023 2 14 59989 -24.482 275.696 -12.4631 0.325 -0.137 0.037 0.026 0.0104 0.075 0.062 2023 2 15 59990 -26.969 278.196 -12.3537 0.225 -0.208 0.038 0.026 0.0107 0.500 0.500 2023 2 16 59991 -29.386 280.733 -12.0717 0.227 -0.205 0.038 0.026 0.0111 0.500 0.500 2023 2 17 59992 -31.785 282.934 -11.7347 0.228 -0.202 0.038 0.026 0.0114 0.500 0.500 2023 2 18 59993 -34.057 284.873 -11.3626 0.225 -0.202 0.038 0.026 0.0118 0.500 0.500 2023 2 19 59994 -35.878 286.817 -11.3111 0.219 -0.202 0.038 0.026 0.0121 0.500 0.500 2023 2 20 59995 -37.331 288.930 -11.5661 0.209 -0.203 0.038 0.026 0.0124 0.500 0.500 2023 2 21 59996 -38.276 291.414 -12.1464 0.198 -0.204 0.039 0.027 0.0128 0.500 0.500 2023 2 22 59997 -38.860 294.592 -12.9295 0.189 -0.205 0.039 0.027 0.0131 0.500 0.500 2023 2 23 59998 -38.960 298.259 -13.7022 0.183 -0.203 0.039 0.027 0.0134 0.500 0.500 2023 2 24 59999 -39.117 301.933 -14.4738 0.182 -0.197 0.039 0.028 0.0138 0.500 0.500 2023 2 25 60000 -39.560 305.105 -15.1354 0.187 -0.190 0.040 0.028 0.0141 0.500 0.500 2023 2 26 60001 -40.853 308.245 -15.5405 0.195 -0.183 0.041 0.029 0.0143 0.500 0.500 2023 2 27 60002 -42.778 310.743 -15.5818 0.207 -0.178 0.043 0.030 0.0146 0.500 0.500 2023 2 28 60003 -44.061 313.306 -15.5253 0.220 -0.178 0.045 0.031 0.0149 0.500 0.500 2023 3 1 60004 -45.132 316.292 -15.2869 0.233 -0.180 0.047 0.033 0.0153 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 2023 1 2 59946 -111.443 -5.114 0.156 0.055 2023 1 3 59947 -111.467 -5.128 0.156 0.056 2023 1 4 59948 -111.313 -5.194 0.156 0.056 2023 1 5 59949 -110.822 -5.531 0.156 0.056 2023 1 6 59950 -110.510 -5.834 0.156 0.055 2023 1 7 59951 -110.392 -5.984 0.156 0.053 2023 1 8 59952 -110.316 -5.948 0.156 0.052 2023 1 9 59953 -110.159 -5.821 0.156 0.050 2023 1 10 59954 -109.874 -5.733 0.153 0.049 2023 1 11 59955 -109.583 -5.665 0.156 0.050 2023 1 12 59956 -109.296 -5.533 0.156 0.053 2023 1 13 59957 -109.147 -5.343 0.158 0.055 2023 1 14 59958 -109.253 -5.273 0.161 0.057 2023 1 15 59959 -109.621 -5.396 0.161 0.059 2023 1 16 59960 -110.037 -5.563 0.163 0.061 2023 1 17 59961 -110.403 -5.564 0.163 0.063 2023 1 18 59962 -110.857 -5.445 0.166 0.065 2023 1 19 59963 -111.474 -5.516 0.166 0.066 2023 1 20 59964 -111.849 -5.887 0.166 0.068 2023 1 21 59965 -111.635 -6.235 0.168 0.069 2023 1 22 59966 -110.964 -6.230 0.168 0.069 2023 1 23 59967 -110.393 -5.970 0.171 0.070 2023 1 24 59968 -110.223 -5.787 0.171 0.070 2023 1 25 59969 -110.193 -5.799 0.171 0.070 2023 1 26 59970 -110.268 -5.775 0.173 0.070 2023 1 27 59971 -110.468 -5.635 0.173 0.070 2023 1 28 59972 -110.687 -5.537 0.173 0.070 2023 1 29 59973 -110.794 -5.657 0.176 0.070 2023 1 30 59974 -110.750 -5.905 0.176 0.069 2023 1 31 59975 -110.583 -6.080 0.176 0.069 2023 2 1 59976 -110.444 -6.163 0.178 0.068 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 2023 1 2 59946 -0.0061 0.0069 15.04106717973 0.00000000120 2023 1 3 59947 -0.2184 0.0069 15.04106721669 0.00000000120 2023 1 4 59948 -0.4214 0.0069 15.04106725203 0.00000000120 2023 1 5 59949 -0.5307 0.0069 15.04106727106 0.00000000120 2023 1 6 59950 -0.5607 0.0069 15.04106727628 0.00000000120 2023 1 7 59951 -0.5273 0.0069 15.04106727047 0.00000000120 2023 1 8 59952 -0.4118 0.0069 15.04106725036 0.00000000120 2023 1 9 59953 -0.2480 0.0070 15.04106722184 0.00000000122 2023 1 10 59954 -0.0751 0.0070 15.04106719174 0.00000000122 2023 1 11 59955 0.0694 0.0070 15.04106716659 0.00000000122 2023 1 12 59956 0.1228 0.0069 15.04106715729 0.00000000120 2023 1 13 59957 0.1561 0.0070 15.04106715150 0.00000000122 2023 1 14 59958 0.1788 0.0070 15.04106714754 0.00000000122 2023 1 15 59959 0.1728 0.0071 15.04106714859 0.00000000124 2023 1 16 59960 0.0929 0.0071 15.04106716250 0.00000000124 2023 1 17 59961 -0.0622 0.0071 15.04106718950 0.00000000124 2023 1 18 59962 -0.2714 0.0072 15.04106722592 0.00000000125 2023 1 19 59963 -0.4450 0.0072 15.04106725614 0.00000000125 2023 1 20 59964 -0.5287 0.0073 15.04106727071 0.00000000127 2023 1 21 59965 -0.5573 0.0073 15.04106727569 0.00000000127 2023 1 22 59966 -0.4647 0.0074 15.04106725957 0.00000000129 2023 1 23 59967 -0.2300 0.0075 15.04106721871 0.00000000131 2023 1 24 59968 0.0788 0.0075 15.04106716495 0.00000000131 2023 1 25 59969 0.2309 0.0076 15.04106713847 0.00000000132 2023 1 26 59970 0.2832 0.0077 15.04106712937 0.00000000134 2023 1 27 59971 0.1724 0.0077 15.04106714866 0.00000000134 2023 1 28 59972 -0.0084 0.0079 15.04106718013 0.00000000138 2023 1 29 59973 -0.1549 0.0075 15.04106720564 0.00000000131 2023 1 30 59974 -0.3504 0.0076 15.04106723967 0.00000000132 2023 1 31 59975 -0.5139 0.0086 15.04106726813 0.00000000150 2023 2 1 59976 -0.6818 0.0087 15.04106729736 0.00000000151 4 - INFORMATION ON TIME SCALES TAI - UTC = 37 s. during period [59946-59976] No leap second introduced during period [59946-59976] 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 bkg2020a.eoxy 48 53 3 - 30 33 10 59948.21 to 59975.21 160 110 19 - 42 97 GSFC gsf2020a.eoxy 49 47 3 8 31 35 10 59948.21 to 59975.21 169 143 17 18 30 73 USNO usn2022d.eoxy 25 30 2 - 26 29 9 59948.21 to 59975.21 50 59 18 - 20 34 IVS * ivs20r1X.eops 21 27 1 - 21 24 8 59948.21 to 59975.20 67 100 19 - 12 19 VLBI Intensive GSI * gsiint2c.eopi - - 6 - - - 8 59951.33 to 59973.33 - - 16 - - - BKG * bkg2023.eopi - - 6 - - - 42 59946.31 to 59975.79 - - 27 - - - GSFC * gsf2020a.eopi - - 13 - - - 42 59946.31 to 59975.79 - - 144 - - - IAA * iaa2021a.eopi - - 339 - - - 2 59946.79 to 59947.79 - - 40 - - - USNO * usn2022d.eopi - - 12 - - - 43 59946.31 to 59975.79 - - 29 - - - OPA opa2021i.eopi - - 12 - - - 2 59946.79 to 59947.79 - - 2 - - - GPS CODE COD0OPSFIN 3 3 - 0 - - 30 59946.50 to 59975.50 24 23 - 17 - - JPL JPL0OPSRAP 10 11 - 5 - - 30 59946.50 to 59975.50 46 32 - 21 - - GFZ GFZ0OPSFIN 5 5 - 1 - - 30 59946.50 to 59975.50 32 33 - 16 - - ESA ESA0OPSFIN 6 6 - 2 - - 30 59946.50 to 59975.50 31 31 - 16 - - SIO SIO0OPSFIN 21 20 - 9 - - 30 59946.50 to 59975.50 38 39 - 23 - - EMR EMR0OPSRAP 4 4 - 0 - - 30 59946.50 to 59975.50 34 56 - 18 - - IAA gnss.res 0 0 - 0 - - 30 59946.50 to 59975.50 56 67 - 24 - - GRGS GRG0OPSFIN 259 259 - 0 - - 30 59946.50 to 59975.50 28 33 - 21 - - ASI asi*.erp 8 8 - 0 - - 13 59946.50 to 59965.50 46 25 - 141 - - MIT MIT0OPSFIN 10 10 - 1 - - 30 59946.50 to 59975.50 36 41 - 18 - - IGR * IGS0OPSRAP 12 12 - 3 - - 30 59946.50 to 59975.50 20 32 - 14 - - IGS * IGS0OPSFIN 10 10 - 2 - - 30 59946.50 to 59975.50 24 27 - 16 - - SLR MCC tg*.02 207 238 - 29 - - 31 59946.00 to 59976.00 84 200 - 47 - - IAA slr_v.dat 83 90 - 5 - - 29 59946.00 to 59976.00 221 274 - 18 - - ASI asi.*.eops 100 100 - 21 - - 30 59946.50 to 59975.50 298 315 - 100 - - ILRS * ilrsa.eop 83 78 - 14 - - 30 59946.50 to 59975.50 357 372 - 31 - - BULLETIN A NEOS mark3.out 25 19 7 - - - 31 59946.00 to 59976.00 46 37 29 - - - To unsubscribe : http://hpiers.obspm.fr/eop-pc/products/bulletins/bulletin_registration.html