BULLETIN B 396 1 February 2021 Contents are described in ftp://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 0.051 0.043 0.0118 0.031 0.079 2020 12 2 59185 106.317 287.572 -178.7175 0.077 0.115 0.067 0.061 0.0117 0.072 0.056 2020 12 3 59186 104.638 287.348 -178.3211 0.107 0.043 0.067 0.062 0.0117 0.073 0.057 2020 12 4 59187 102.958 287.742 -177.9212 0.137 -0.029 0.068 0.064 0.0117 0.073 0.058 2020 12 5 59188 101.346 288.801 -177.6326 0.148 -0.057 0.068 0.066 0.0117 0.074 0.059 2020 12 6 59189 99.422 289.616 -177.5418 0.153 -0.069 0.069 0.067 0.0117 0.074 0.059 2020 12 7 59190 97.392 289.604 -177.6428 0.159 -0.080 0.069 0.069 0.0118 0.075 0.060 2020 12 8 59191 95.366 289.667 -177.9633 0.164 -0.092 0.069 0.070 0.0119 0.076 0.061 2020 12 9 59192 93.289 289.586 -178.5100 0.167 -0.056 0.070 0.071 0.0120 0.076 0.061 2020 12 10 59193 91.596 289.267 -179.1348 0.169 -0.008 0.070 0.071 0.0120 0.077 0.061 2020 12 11 59194 90.377 289.317 -179.7372 0.172 0.040 0.071 0.072 0.0120 0.078 0.061 2020 12 12 59195 89.352 289.933 -180.1889 0.135 0.054 0.042 0.032 0.0121 0.078 0.061 2020 12 13 59196 88.122 291.099 -180.3980 0.083 0.056 0.042 0.032 0.0121 0.074 0.060 2020 12 14 59197 86.753 292.095 -180.3677 0.031 0.058 0.042 0.032 0.0121 0.075 0.060 2020 12 15 59198 85.413 292.842 -180.1153 -0.021 0.060 0.042 0.032 0.0122 0.075 0.060 2020 12 16 59199 84.102 293.335 -179.7032 -0.023 0.022 0.042 0.032 0.0122 0.076 0.060 2020 12 17 59200 82.931 293.953 -179.2128 -0.011 -0.027 0.042 0.032 0.0123 0.075 0.061 2020 12 18 59201 82.113 294.634 -178.7692 0.000 -0.076 0.042 0.032 0.0122 0.076 0.062 2020 12 19 59202 81.252 294.893 -178.4509 0.061 -0.073 0.042 0.032 0.0122 0.076 0.062 2020 12 20 59203 80.081 295.269 -178.3092 0.142 -0.052 0.042 0.032 0.0122 0.077 0.063 2020 12 21 59204 78.855 295.467 -178.2871 0.222 -0.030 0.042 0.032 0.0123 0.077 0.063 2020 12 22 59205 77.844 295.794 -178.3855 0.303 -0.009 0.043 0.032 0.0124 0.075 0.063 2020 12 23 59206 77.211 296.035 -178.5628 0.149 0.159 0.043 0.032 0.0114 0.079 0.124 2020 12 24 59207 77.007 296.472 -178.6681 0.087 0.225 0.043 0.032 0.0114 0.080 0.124 2020 12 25 59208 76.731 297.278 -178.6618 0.056 0.239 0.044 0.032 0.0114 0.081 0.123 2020 12 26 59209 76.029 297.933 -178.5155 0.025 0.254 0.044 0.033 0.0114 0.082 0.122 2020 12 27 59210 75.042 298.659 -178.2196 -0.006 0.268 0.045 0.033 0.0114 0.083 0.121 2020 12 28 59211 74.002 299.890 -177.7873 -0.038 0.282 0.045 0.033 0.0115 0.084 0.120 2020 12 29 59212 72.652 301.612 -177.2435 -0.069 0.296 0.045 0.033 0.0115 0.086 0.119 2020 12 30 59213 71.166 302.626 -176.6471 -0.020 0.199 0.046 0.033 0.0114 0.087 0.116 2020 12 31 59214 69.727 303.062 -176.0031 0.022 0.151 0.046 0.034 0.0113 0.088 0.112 2021 1 1 59215 68.654 303.977 -175.3760 0.052 0.134 0.046 0.034 0.0112 0.089 0.107 Preliminary extension 2021 1 2 59216 67.812 305.477 -174.8457 0.082 0.118 0.046 0.034 0.0111 0.090 0.102 2021 1 3 59217 66.046 306.775 -174.4740 0.124 0.107 0.039 0.025 0.0076 0.049 0.062 2021 1 4 59218 63.889 307.867 -174.3210 0.116 0.056 0.039 0.025 0.0076 0.049 0.062 2021 1 5 59219 61.667 308.631 -174.3734 0.107 0.005 0.039 0.025 0.0076 0.050 0.061 2021 1 6 59220 60.408 309.582 -174.5786 0.088 0.051 0.039 0.025 0.0076 0.050 0.063 2021 1 7 59221 59.472 310.250 -174.8588 0.066 0.124 0.039 0.025 0.0077 0.051 0.065 2021 1 8 59222 59.023 311.113 -175.0689 0.043 0.196 0.039 0.026 0.0077 0.052 0.067 2021 1 9 59223 58.177 311.987 -175.0781 0.049 0.210 0.039 0.026 0.0077 0.052 0.068 2021 1 10 59224 58.007 313.030 -174.8652 0.065 0.204 0.040 0.026 0.0077 0.053 0.069 2021 1 11 59225 57.525 314.150 -174.4637 0.082 0.197 0.040 0.026 0.0077 0.054 0.071 2021 1 12 59226 56.961 314.651 -173.9639 0.098 0.190 0.040 0.026 0.0077 0.054 0.072 2021 1 13 59227 56.024 315.474 -173.4226 0.150 0.120 0.040 0.026 0.0078 0.055 0.075 2021 1 14 59228 54.909 316.074 -172.8825 0.212 0.034 0.040 0.027 0.0080 0.056 0.079 2021 1 15 59229 54.273 316.878 -172.4655 0.273 -0.052 0.041 0.027 0.0081 0.057 0.083 2021 1 16 59230 53.791 317.847 -172.0447 0.162 0.017 0.041 0.027 0.0083 0.500 0.500 2021 1 17 59231 52.946 318.736 -171.7689 0.160 0.019 0.042 0.028 0.0084 0.500 0.500 2021 1 18 59232 52.400 319.547 -171.5692 0.154 0.028 0.043 0.028 0.0086 0.500 0.500 2021 1 19 59233 52.447 319.963 -171.4067 0.145 0.040 0.043 0.029 0.0088 0.500 0.500 2021 1 20 59234 52.763 320.952 -171.2466 0.133 0.051 0.044 0.029 0.0091 0.500 0.500 2021 1 21 59235 52.522 321.933 -171.0582 0.118 0.059 0.045 0.030 0.0093 0.500 0.500 2021 1 22 59236 52.394 323.194 -170.8123 0.103 0.063 0.045 0.030 0.0095 0.500 0.500 2021 1 23 59237 52.352 324.259 -170.4842 0.091 0.064 0.046 0.031 0.0097 0.500 0.500 2021 1 24 59238 51.905 325.695 -170.0138 0.085 0.064 0.047 0.031 0.0100 0.500 0.500 2021 1 25 59239 50.887 327.168 -169.4000 0.087 0.063 0.047 0.032 0.0103 0.500 0.500 2021 1 26 59240 50.311 328.727 -168.6882 0.096 0.062 0.048 0.032 0.0106 0.500 0.500 2021 1 27 59241 49.964 330.533 -167.9556 0.107 0.060 0.049 0.033 0.0110 0.500 0.500 2021 1 28 59242 49.836 332.499 -167.3058 0.115 0.055 0.049 0.034 0.0114 0.500 0.500 2021 1 29 59243 49.886 334.381 -166.9250 0.119 0.047 0.050 0.034 0.0118 0.500 0.500 2021 1 30 59244 49.581 336.201 -166.6989 0.118 0.037 0.051 0.035 0.0122 0.500 0.500 2021 1 31 59245 49.217 337.844 -166.7247 0.116 0.026 0.052 0.035 0.0126 0.500 0.500 2021 2 1 59246 49.245 339.873 -166.9684 0.112 0.019 0.053 0.036 0.0130 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 2020 12 2 59185 -111.521 -6.433 0.181 0.056 2020 12 3 59186 -111.206 -6.563 0.184 0.057 2020 12 4 59187 -110.846 -6.654 0.184 0.058 2020 12 5 59188 -110.561 -6.662 0.186 0.059 2020 12 6 59189 -110.303 -6.608 0.186 0.059 2020 12 7 59190 -110.036 -6.521 0.189 0.060 2020 12 8 59191 -109.822 -6.423 0.191 0.061 2020 12 9 59192 -109.770 -6.248 0.191 0.061 2020 12 10 59193 -109.962 -6.021 0.194 0.061 2020 12 11 59194 -110.382 -5.837 0.196 0.061 2020 12 12 59195 -110.957 -5.849 0.196 0.061 2020 12 13 59196 -111.357 -6.004 0.186 0.060 2020 12 14 59197 -111.424 -6.091 0.189 0.060 2020 12 15 59198 -111.283 -5.998 0.189 0.060 2020 12 16 59199 -110.978 -5.912 0.191 0.060 2020 12 17 59200 -110.638 -6.016 0.189 0.061 2020 12 18 59201 -110.306 -6.270 0.191 0.062 2020 12 19 59202 -109.955 -6.376 0.191 0.062 2020 12 20 59203 -109.755 -6.220 0.194 0.063 2020 12 21 59204 -109.702 -5.936 0.194 0.063 2020 12 22 59205 -109.670 -5.733 0.189 0.063 2020 12 23 59206 -110.200 -5.518 0.199 0.124 2020 12 24 59207 -110.461 -5.415 0.201 0.124 2020 12 25 59208 -110.570 -5.264 0.204 0.123 2020 12 26 59209 -110.588 -5.069 0.206 0.122 2020 12 27 59210 -110.593 -4.992 0.209 0.121 2020 12 28 59211 -110.681 -5.121 0.211 0.120 2020 12 29 59212 -110.800 -5.378 0.216 0.119 2020 12 30 59213 -110.575 -5.713 0.219 0.116 2020 12 31 59214 -110.137 -5.856 0.221 0.112 2021 1 1 59215 -109.613 -5.841 0.224 0.107 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 2020 12 2 59185 -0.3630 0.0080 15.04106724186 0.00000000139 2020 12 3 59186 -0.4220 0.0081 15.04106725213 0.00000000141 2020 12 4 59187 -0.3645 0.0081 15.04106724212 0.00000000141 2020 12 5 59188 -0.1936 0.0082 15.04106721237 0.00000000143 2020 12 6 59189 -0.0216 0.0082 15.04106718243 0.00000000143 2020 12 7 59190 0.2074 0.0083 15.04106714256 0.00000000144 2020 12 8 59191 0.4263 0.0083 15.04106710446 0.00000000144 2020 12 9 59192 0.5628 0.0083 15.04106708069 0.00000000144 2020 12 10 59193 0.6352 0.0084 15.04106706809 0.00000000146 2020 12 11 59194 0.5418 0.0077 15.04106708435 0.00000000134 2020 12 12 59195 0.3407 0.0073 15.04106711936 0.00000000127 2020 12 13 59196 0.0936 0.0068 15.04106716238 0.00000000118 2020 12 14 59197 -0.1487 0.0073 15.04106720456 0.00000000127 2020 12 15 59198 -0.3569 0.0073 15.04106724080 0.00000000127 2020 12 16 59199 -0.4950 0.0074 15.04106726484 0.00000000129 2020 12 17 59200 -0.4784 0.0068 15.04106726195 0.00000000118 2020 12 18 59201 -0.3551 0.0073 15.04106724049 0.00000000127 2020 12 19 59202 -0.2153 0.0073 15.04106721615 0.00000000127 2020 12 20 59203 -0.0815 0.0073 15.04106719286 0.00000000127 2020 12 21 59204 0.0540 0.0073 15.04106716927 0.00000000127 2020 12 22 59205 0.1406 0.0073 15.04106715419 0.00000000127 2020 12 23 59206 0.1221 0.0069 15.04106715741 0.00000000120 2020 12 24 59207 0.0411 0.0069 15.04106717152 0.00000000120 2020 12 25 59208 -0.0493 0.0069 15.04106718725 0.00000000120 2020 12 26 59209 -0.2106 0.0069 15.04106721533 0.00000000120 2020 12 27 59210 -0.3764 0.0069 15.04106724420 0.00000000120 2020 12 28 59211 -0.4959 0.0069 15.04106726500 0.00000000120 2020 12 29 59212 -0.5599 0.0069 15.04106727614 0.00000000120 2020 12 30 59213 -0.6280 0.0068 15.04106728800 0.00000000118 2020 12 31 59214 -0.6590 0.0068 15.04106729339 0.00000000118 2021 1 1 59215 -0.5763 0.0068 15.04106727900 0.00000000118 4 - INFORMATION ON TIME SCALES TAI - UTC = 37 s. during period [59185-59215] No leap second introduced during period [59185-59215] 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 gsf2020a.eoxy 102 84 4 13 35 83 9 59187.27 to 59213.29 245 106 11 27 110 30 IAA iaa2007a.eops 150 139 6 - 35 90 9 59187.27 to 59213.29 323 396 20 - 96 94 USNO usn2020b.eoxy 104 92 4 - 40 95 9 59187.27 to 59213.29 292 118 9 - 71 49 IVS * ivs20r1X.eops 535 447 15 - 168 391 9 59187.27 to 59213.29 284 77 10 - 53 41 VLBI Intensive GSI * gsiint2c.eopi - - 4 - - - 7 59188.33 to 59210.33 - - 18 - - - BKG * bkg2020.eopi - - 11 - - - 26 59185.79 to 59213.80 - - 22 - - - GSFC * gsf2020a.eopi - - 12 - - - 26 59185.79 to 59213.80 - - 20 - - - IAA * iaa2019a.eopi - - 12 - - - 26 59185.79 to 59213.80 - - 21 - - - USNO * usnouint.data - - 11 - - - 23 59185.79 to 59213.80 - - 17 - - - GPS CODE COD*ERP_R 5 5 - 0 - - 30 59185.50 to 59214.50 33 38 - 13 - - JPL jpl*.erp 10 11 - 5 - - 30 59185.50 to 59214.50 34 43 - 21 - - GFZ gfz*.erp 6 6 - 1 - - 30 59185.50 to 59214.50 33 41 - 15 - - ESOC esa*.erp 8 9 - 3 - - 30 59185.50 to 59214.50 27 43 - 12 - - SIO sio*.erp siu*.erp 100 100 - 465 - - 29 59185.50 to 59213.50 40 48 - 18 - - EMR emr*.erp 4 3 - 0 - - 30 59185.50 to 59214.50 43 34 - 13 - - IAA gnss.res 0 0 - 0 - - 30 59185.50 to 59214.50 64 98 - 22 - - GRGS grg*.erp 61 61 - 0 - - 30 59185.50 to 59214.50 30 30 - 11 - - ASI asi*.erp 8 8 - 0 - - 26 59189.50 to 59214.50 35 46 - 46 - - MIT mit*.erp 12 12 - 2 - - 30 59185.50 to 59214.50 38 39 - 16 - - IGR * igs96p02.erp 10 11 - 2 - - 30 59185.50 to 59214.50 23 34 - 11 - - IGS * igs00p03.erp 3 3 - 0 - - 30 59185.50 to 59214.50 31 37 - 15 - - SLR MCC tg*.02 201 180 - 21 - - 12 59185.00 to 59196.00 101 155 - 133 - - IAA slr_v.dat 76 77 - 5 - - 29 59185.00 to 59215.00 213 179 - 20 - - ILRS * ilrsa.eop 64 57 - 10 - - 30 59185.50 to 59214.50 152 159 - 36 - - BULLETIN A NEOS mark3.out 33 22 9 - - - 31 59185.00 to 59215.00 37 56 11 - - - To unsubscribe : http://hpiers.obspm.fr/eop-pc/products/bulletins/bulletin_registration.html