BULLETIN B 420 4 February 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 0.031 0.023 0.0090 0.058 0.049 2022 12 2 59915 141.086 190.030 -20.0182 0.294 -0.116 0.033 0.022 0.0087 0.069 0.056 2022 12 3 59916 138.520 189.588 -20.4483 0.304 -0.128 0.034 0.022 0.0086 0.065 0.055 2022 12 4 59917 135.739 189.603 -20.8072 0.326 -0.131 0.034 0.023 0.0086 0.065 0.055 2022 12 5 59918 132.595 189.132 -21.0271 0.349 -0.134 0.035 0.023 0.0085 0.063 0.055 2022 12 6 59919 130.234 188.807 -21.0546 0.371 -0.137 0.035 0.023 0.0083 0.059 0.054 2022 12 7 59920 127.804 188.914 -20.8636 0.345 -0.120 0.035 0.023 0.0091 0.059 0.054 2022 12 8 59921 125.550 188.683 -20.4842 0.307 -0.097 0.035 0.023 0.0090 0.058 0.053 2022 12 9 59922 123.051 188.943 -19.9575 0.268 -0.074 0.035 0.023 0.0090 0.058 0.053 2022 12 10 59923 120.023 189.212 -19.3465 0.266 -0.093 0.034 0.023 0.0089 0.058 0.052 2022 12 11 59924 117.059 189.519 -18.7186 0.280 -0.129 0.034 0.023 0.0089 0.058 0.052 2022 12 12 59925 114.474 189.311 -18.1257 0.294 -0.165 0.034 0.023 0.0088 0.057 0.051 2022 12 13 59926 112.235 189.380 -17.6371 0.307 -0.200 0.034 0.023 0.0087 0.057 0.050 2022 12 14 59927 110.057 189.733 -17.2887 0.322 -0.192 0.033 0.023 0.0108 0.057 0.050 2022 12 15 59928 107.848 190.644 -17.0929 0.338 -0.172 0.033 0.023 0.0100 0.057 0.049 2022 12 16 59929 105.276 191.662 -17.0407 0.338 -0.153 0.033 0.024 0.0101 0.057 0.048 2022 12 17 59930 102.588 192.217 -17.1383 0.333 -0.136 0.032 0.024 0.0101 0.056 0.047 2022 12 18 59931 100.160 192.490 -17.3664 0.328 -0.118 0.032 0.025 0.0101 0.056 0.046 2022 12 19 59932 98.210 192.803 -17.7187 0.322 -0.101 0.032 0.025 0.0101 0.056 0.046 2022 12 20 59933 96.711 193.084 -17.9634 0.317 -0.083 0.031 0.026 0.0093 0.056 0.045 2022 12 21 59934 95.777 193.348 -18.1234 0.273 -0.091 0.031 0.026 0.0091 0.056 0.045 2022 12 22 59935 94.877 193.950 -18.1060 0.219 -0.104 0.031 0.026 0.0091 0.056 0.046 2022 12 23 59936 93.472 194.922 -17.8955 0.217 -0.114 0.027 0.022 0.0090 0.056 0.046 2022 12 24 59937 91.397 196.126 -17.5841 0.235 -0.121 0.027 0.023 0.0090 0.056 0.047 2022 12 25 59938 88.402 197.099 -17.3115 0.252 -0.129 0.027 0.023 0.0090 0.057 0.047 2022 12 26 59939 85.204 197.391 -17.2323 0.270 -0.136 0.027 0.023 0.0089 0.057 0.047 2022 12 27 59940 82.060 197.809 -17.4541 0.287 -0.144 0.026 0.023 0.0085 0.057 0.048 2022 12 28 59941 78.253 198.379 -17.9243 0.305 -0.151 0.026 0.023 0.0083 0.057 0.048 2022 12 29 59942 74.744 198.584 -18.4719 0.318 -0.134 0.026 0.023 0.0083 0.057 0.048 2022 12 30 59943 71.281 199.199 -19.0102 0.329 -0.110 0.026 0.023 0.0082 0.057 0.048 2022 12 31 59944 67.074 200.103 -19.4855 0.331 -0.121 0.026 0.023 0.0083 0.058 0.048 2023 1 1 59945 62.699 200.944 -19.7967 0.330 -0.144 0.026 0.022 0.0083 0.058 0.049 Preliminary extension 2023 1 2 59946 59.003 201.796 -19.9243 0.328 -0.168 0.025 0.022 0.0092 0.058 0.049 2023 1 3 59947 55.638 202.514 -19.8250 0.327 -0.192 0.025 0.023 0.0088 0.058 0.049 2023 1 4 59948 52.933 202.990 -19.5007 0.325 -0.216 0.025 0.023 0.0088 0.058 0.050 2023 1 5 59949 50.795 203.830 -19.0232 0.324 -0.240 0.025 0.022 0.0086 0.059 0.050 2023 1 6 59950 48.795 205.101 -18.4663 0.332 -0.235 0.025 0.022 0.0090 0.059 0.049 2023 1 7 59951 46.856 206.219 -17.9178 0.343 -0.219 0.025 0.022 0.0090 0.059 0.048 2023 1 8 59952 45.140 207.587 -17.4609 0.354 -0.204 0.026 0.022 0.0090 0.059 0.048 2023 1 9 59953 43.376 209.111 -17.1315 0.366 -0.188 0.026 0.022 0.0090 0.059 0.047 2023 1 10 59954 41.327 210.287 -16.9668 0.377 -0.173 0.026 0.022 0.0090 0.059 0.047 2023 1 11 59955 38.982 211.132 -16.9804 0.359 -0.148 0.026 0.022 0.0091 0.060 0.048 2023 1 12 59956 36.541 211.914 -17.0905 0.334 -0.122 0.026 0.022 0.0092 0.060 0.049 2023 1 13 59957 34.180 213.019 -17.2133 0.308 -0.095 0.026 0.022 0.0093 0.061 0.050 2023 1 14 59958 31.814 214.394 -17.3932 0.302 -0.082 0.026 0.022 0.0094 0.061 0.052 2023 1 15 59959 29.354 216.042 -17.5658 0.301 -0.074 0.025 0.022 0.0096 0.062 0.054 2023 1 16 59960 26.877 217.924 -17.7255 0.301 -0.066 0.025 0.022 0.0097 0.063 0.056 2023 1 17 59961 24.350 220.213 -17.7513 0.301 -0.058 0.026 0.022 0.0099 0.064 0.058 2023 1 18 59962 21.680 222.503 -17.5985 0.237 -0.187 0.026 0.023 0.0101 0.500 0.500 2023 1 19 59963 19.082 224.261 -17.2406 0.242 -0.182 0.027 0.023 0.0103 0.500 0.500 2023 1 20 59964 16.717 225.678 -16.7287 0.246 -0.178 0.028 0.023 0.0106 0.500 0.500 2023 1 21 59965 14.027 226.888 -16.1857 0.246 -0.177 0.028 0.024 0.0108 0.500 0.500 2023 1 22 59966 10.886 227.738 -15.6555 0.242 -0.177 0.029 0.024 0.0111 0.500 0.500 2023 1 23 59967 7.724 228.827 -15.2818 0.233 -0.178 0.030 0.025 0.0114 0.500 0.500 2023 1 24 59968 5.317 230.256 -15.1962 0.222 -0.180 0.031 0.025 0.0117 0.500 0.500 2023 1 25 59969 3.849 231.424 -15.3992 0.210 -0.182 0.032 0.026 0.0120 0.500 0.500 2023 1 26 59970 2.933 233.230 -15.7026 0.200 -0.182 0.033 0.026 0.0123 0.500 0.500 2023 1 27 59971 1.589 235.928 -15.8863 0.195 -0.179 0.034 0.027 0.0126 0.500 0.500 2023 1 28 59972 0.280 238.098 -15.9906 0.195 -0.174 0.035 0.027 0.0129 0.500 0.500 2023 1 29 59973 -0.221 240.383 -15.8932 0.201 -0.169 0.036 0.028 0.0133 0.500 0.500 2023 1 30 59974 -0.929 242.667 -15.6602 0.212 -0.166 0.038 0.029 0.0137 0.500 0.500 2023 1 31 59975 -1.322 244.973 -15.2539 0.225 -0.169 0.039 0.030 0.0141 0.500 0.500 2023 2 1 59976 -2.297 247.853 -14.6216 0.239 -0.176 0.040 0.030 0.0146 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 2022 12 2 59915 -111.557 -6.103 0.173 0.056 2022 12 3 59916 -111.593 -5.954 0.163 0.055 2022 12 4 59917 -111.696 -5.787 0.163 0.055 2022 12 5 59918 -111.763 -5.625 0.158 0.055 2022 12 6 59919 -111.664 -5.528 0.148 0.054 2022 12 7 59920 -111.530 -5.568 0.148 0.054 2022 12 8 59921 -111.431 -5.765 0.146 0.053 2022 12 9 59922 -111.450 -5.997 0.146 0.053 2022 12 10 59923 -111.433 -6.148 0.146 0.052 2022 12 11 59924 -111.306 -6.171 0.146 0.052 2022 12 12 59925 -111.063 -6.164 0.143 0.051 2022 12 13 59926 -110.733 -6.213 0.143 0.050 2022 12 14 59927 -110.324 -6.215 0.143 0.050 2022 12 15 59928 -109.882 -6.084 0.143 0.049 2022 12 16 59929 -109.642 -5.845 0.143 0.048 2022 12 17 59930 -109.796 -5.644 0.141 0.047 2022 12 18 59931 -110.291 -5.561 0.141 0.046 2022 12 19 59932 -110.824 -5.496 0.141 0.046 2022 12 20 59933 -111.212 -5.340 0.141 0.045 2022 12 21 59934 -111.654 -5.239 0.141 0.045 2022 12 22 59935 -112.105 -5.394 0.141 0.046 2022 12 23 59936 -112.150 -5.759 0.141 0.046 2022 12 24 59937 -111.706 -6.007 0.141 0.047 2022 12 25 59938 -111.094 -5.943 0.143 0.047 2022 12 26 59939 -110.709 -5.742 0.143 0.047 2022 12 27 59940 -110.623 -5.660 0.143 0.048 2022 12 28 59941 -110.647 -5.673 0.143 0.048 2022 12 29 59942 -110.694 -5.570 0.143 0.048 2022 12 30 59943 -110.793 -5.341 0.143 0.048 2022 12 31 59944 -110.973 -5.182 0.146 0.048 2023 1 1 59945 -111.162 -5.163 0.146 0.049 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 2022 12 2 59915 0.4409 0.0071 15.04106710192 0.00000000124 2022 12 3 59916 0.4101 0.0071 15.04106710728 0.00000000124 2022 12 4 59917 0.3120 0.0071 15.04106712436 0.00000000124 2022 12 5 59918 0.1301 0.0072 15.04106715602 0.00000000125 2022 12 6 59919 -0.0636 0.0072 15.04106718974 0.00000000125 2022 12 7 59920 -0.2779 0.0071 15.04106722705 0.00000000124 2022 12 8 59921 -0.4561 0.0072 15.04106725807 0.00000000125 2022 12 9 59922 -0.5859 0.0072 15.04106728067 0.00000000125 2022 12 10 59923 -0.6481 0.0072 15.04106729150 0.00000000125 2022 12 11 59924 -0.6394 0.0072 15.04106728998 0.00000000125 2022 12 12 59925 -0.5417 0.0071 15.04106727297 0.00000000124 2022 12 13 59926 -0.4093 0.0071 15.04106724992 0.00000000124 2022 12 14 59927 -0.2511 0.0072 15.04106722238 0.00000000125 2022 12 15 59928 -0.1183 0.0071 15.04106719926 0.00000000124 2022 12 16 59929 0.0291 0.0072 15.04106717360 0.00000000125 2022 12 17 59930 0.1792 0.0072 15.04106714747 0.00000000125 2022 12 18 59931 0.2704 0.0072 15.04106713160 0.00000000125 2022 12 19 59932 0.2970 0.0072 15.04106712697 0.00000000125 2022 12 20 59933 0.2092 0.0072 15.04106714225 0.00000000125 2022 12 21 59934 0.0866 0.0073 15.04106716359 0.00000000127 2022 12 22 59935 -0.0771 0.0073 15.04106719209 0.00000000127 2022 12 23 59936 -0.2489 0.0067 15.04106722200 0.00000000117 2022 12 24 59937 -0.3125 0.0068 15.04106723307 0.00000000118 2022 12 25 59938 -0.1842 0.0068 15.04106721074 0.00000000118 2022 12 26 59939 0.0694 0.0068 15.04106716659 0.00000000118 2022 12 27 59940 0.3322 0.0069 15.04106712084 0.00000000120 2022 12 28 59941 0.4997 0.0069 15.04106709168 0.00000000120 2022 12 29 59942 0.5479 0.0068 15.04106708329 0.00000000118 2022 12 30 59943 0.5126 0.0068 15.04106708943 0.00000000118 2022 12 31 59944 0.4124 0.0065 15.04106710688 0.00000000113 2023 1 1 59945 0.2006 0.0069 15.04106714375 0.00000000120 4 - INFORMATION ON TIME SCALES TAI - UTC = 37 s. during period [59915-59945] No leap second introduced during period [59915-59945] 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 44 51 2 - 28 28 10 59915.27 to 59943.27 156 118 16 - 53 55 GSFC gsf2020a.eoxy 47 44 2 6 30 30 10 59915.27 to 59943.27 184 135 17 16 23 33 IAA iaa2021a.eops 32 45 3 - 29 27 6 59915.27 to 59935.27 98 106 14 - 56 78 USNO usn2022d.eoxy 35 38 1 - 32 33 9 59915.27 to 59943.27 124 97 15 - 27 13 IVS * ivs20r1X.eops 9 13 0 - 10 10 6 59915.28 to 59935.27 77 88 14 - 8 6 OPA * opa2021a.eops 88 135 9 - 169 131 7 59915.27 to 59935.27 1054 808 50 - 713 290 VLBI Intensive GSI * gsiint2c.eopi - - 5 - - - 7 59916.33 to 59944.33 - - 26 - - - BKG * bkg2022.eopi - - 10 - - - 35 59915.00 to 59944.33 - - 43 - - - GSFC * gsf2020a.eopi - - 12 - - - 35 59915.00 to 59944.33 - - 49 - - - IAA * iaa2021a.eopi - - 23 - - - 39 59915.00 to 59944.33 - - 47 - - - USNO * usn2022d.eopi - - 11 - - - 39 59915.00 to 59944.79 - - 48 - - - OPA opa2021i.eopi - - 10 - - - 27 59916.33 to 59944.33 - - 189 - - - GPS CODE COD*ERP_R 5 5 - 0 - - 30 59915.50 to 59944.50 30 36 - 14 - - JPL jpl*.erp 10 10 - 5 - - 30 59915.50 to 59944.50 37 44 - 23 - - GFZ gfz*.erp 1 1 - 0 - - 121 59915.00 to 59945.00 36 44 - 17 - - ESOC ESA*FIN*ERP 6 6 - 2 - - 30 59915.50 to 59944.50 35 40 - 13 - - SIO SIO*FIN*ERP 21 21 - 8 - - 30 59915.50 to 59944.50 63 57 - 20 - - EMR EMR*RAP*ERP 4 4 - 0 - - 30 59915.50 to 59944.50 53 66 - 14 - - IAA gnss.res 0 0 - 0 - - 20 59915.50 to 59944.50 63 68 - 29 - - GRGS GRG*FIN*ERP 258 258 - 0 - - 30 59915.50 to 59944.50 27 43 - 16 - - ASI asi*.erp 8 8 - 0 - - 28 59917.50 to 59944.50 53 46 - 78 - - MIT MIT*FIN*ERP 10 10 - 1 - - 30 59915.50 to 59944.50 44 51 - 20 - - IGR * igs96p02.erp 13 12 - 3 - - 30 59915.50 to 59944.50 33 34 - 11 - - IGS * igs00p03.erp 3 3 - 0 - - 30 59915.50 to 59944.50 34 46 - 19 - - SLR MCC tg*.02 191 196 - 31 - - 31 59915.00 to 59945.00 171 167 - 94 - - IAA slr_v.dat 75 80 - 5 - - 31 59915.00 to 59945.00 212 263 - 26 - - ASI asi.*.eops 108 104 - 21 - - 30 59915.50 to 59944.50 390 251 - 83 - - ILRS * ilrsa.eop 68 64 - 11 - - 30 59915.50 to 59944.50 182 235 - 39 - - BULLETIN A NEOS mark3.out 26 20 4 - - - 31