BULLETIN B 401 2 July 2021 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 0.024 0.017 0.0118 0.016 0.031 2021 5 2 59336 108.188 436.419 -183.0909 0.276 0.037 0.026 0.017 0.0118 0.036 0.032 2021 5 3 59337 109.767 437.441 -182.7909 0.237 0.016 0.026 0.017 0.0118 0.037 0.033 2021 5 4 59338 111.592 438.462 -182.5243 0.197 -0.006 0.026 0.017 0.0113 0.037 0.033 2021 5 5 59339 113.313 439.364 -182.3978 0.182 -0.033 0.025 0.017 0.0112 0.037 0.034 2021 5 6 59340 115.279 440.309 -182.4200 0.173 -0.063 0.025 0.017 0.0109 0.037 0.035 2021 5 7 59341 117.172 441.478 -182.5670 0.164 -0.092 0.025 0.017 0.0103 0.038 0.036 2021 5 8 59342 118.681 442.646 -182.7886 0.166 -0.099 0.025 0.017 0.0104 0.038 0.036 2021 5 9 59343 120.432 443.435 -183.0318 0.172 -0.097 0.025 0.018 0.0105 0.038 0.036 2021 5 10 59344 122.013 444.253 -183.2398 0.178 -0.096 0.025 0.018 0.0112 0.038 0.037 2021 5 11 59345 123.229 444.950 -183.3696 0.184 -0.094 0.025 0.018 0.0111 0.039 0.037 2021 5 12 59346 124.570 445.119 -183.4050 0.197 -0.091 0.025 0.018 0.0107 0.039 0.036 2021 5 13 59347 126.398 444.900 -183.3166 0.212 -0.088 0.025 0.018 0.0104 0.039 0.036 2021 5 14 59348 128.393 445.000 -183.1001 0.228 -0.084 0.025 0.018 0.0104 0.039 0.035 2021 5 15 59349 130.276 445.421 -182.8031 0.226 -0.081 0.025 0.019 0.0105 0.039 0.034 2021 5 16 59350 132.466 445.767 -182.4802 0.219 -0.079 0.025 0.019 0.0106 0.039 0.034 2021 5 17 59351 134.899 446.354 -182.2601 0.211 -0.076 0.024 0.018 0.0111 0.039 0.033 2021 5 18 59352 137.096 446.653 -182.0734 0.204 -0.073 0.024 0.018 0.0111 0.040 0.032 2021 5 19 59353 139.382 446.488 -181.9842 0.197 -0.071 0.024 0.018 0.0112 0.040 0.031 2021 5 20 59354 142.062 446.194 -182.1300 0.227 -0.129 0.024 0.018 0.0111 0.040 0.030 2021 5 21 59355 144.518 446.092 -182.5058 0.267 -0.204 0.024 0.018 0.0113 0.040 0.029 2021 5 22 59356 146.638 446.087 -183.0591 0.254 -0.207 0.023 0.018 0.0116 0.040 0.028 2021 5 23 59357 148.357 446.319 -183.7359 0.222 -0.183 0.023 0.018 0.0120 0.040 0.027 2021 5 24 59358 150.055 446.007 -184.4377 0.190 -0.159 0.023 0.018 0.0128 0.040 0.026 2021 5 25 59359 151.671 445.578 -185.0358 0.157 -0.135 0.022 0.017 0.0131 0.040 0.025 2021 5 26 59360 153.177 445.002 -185.4186 0.125 -0.111 0.022 0.017 0.0135 0.040 0.024 2021 5 27 59361 154.610 444.641 -185.5433 0.155 -0.131 0.022 0.017 0.0140 0.041 0.025 2021 5 28 59362 156.083 444.149 -185.4061 0.202 -0.164 0.022 0.017 0.0135 0.042 0.026 2021 5 29 59363 157.787 443.296 -185.0586 0.215 -0.173 0.023 0.017 0.0138 0.042 0.028 2021 5 30 59364 159.496 443.194 -184.6181 0.215 -0.173 0.023 0.017 0.0142 0.043 0.029 2021 5 31 59365 160.764 443.056 -184.1962 0.216 -0.172 0.023 0.018 0.0145 0.044 0.031 2021 6 1 59366 162.221 442.541 -183.8763 0.216 -0.172 0.023 0.018 0.0140 0.045 0.033 Preliminary extension 2021 6 2 59367 163.505 442.197 -183.7088 0.247 -0.168 0.023 0.018 0.0136 0.046 0.035 2021 6 3 59368 164.269 441.834 -183.6734 0.286 -0.163 0.023 0.018 0.0136 0.047 0.037 2021 6 4 59369 165.267 441.100 -183.7182 0.325 -0.157 0.023 0.018 0.0137 0.048 0.039 2021 6 5 59370 166.494 439.956 -183.7435 0.311 -0.153 0.023 0.018 0.0139 0.049 0.041 2021 6 6 59371 167.446 438.758 -183.7213 0.278 -0.148 0.024 0.018 0.0141 0.050 0.044 2021 6 7 59372 168.455 437.773 -183.5146 0.245 -0.144 0.024 0.018 0.0143 0.051 0.046 2021 6 8 59373 169.987 437.040 -183.1307 0.212 -0.140 0.024 0.018 0.0145 0.053 0.049 2021 6 9 59374 171.662 436.470 -182.5958 0.198 -0.127 0.024 0.018 0.0146 0.054 0.052 2021 6 10 59375 173.062 436.107 -181.9125 0.190 -0.111 0.024 0.019 0.0147 0.055 0.055 2021 6 11 59376 174.245 435.721 -181.0984 0.205 -0.105 0.024 0.019 0.0150 0.056 0.058 2021 6 12 59377 175.462 435.399 -180.2080 0.228 -0.104 0.024 0.019 0.0153 0.058 0.062 2021 6 13 59378 176.463 435.075 -179.2833 0.251 -0.102 0.024 0.019 0.0156 0.059 0.066 2021 6 14 59379 177.561 434.798 -178.3906 0.274 -0.100 0.025 0.019 0.0158 0.061 0.070 2021 6 15 59380 178.436 434.545 -177.6043 0.297 -0.098 0.025 0.019 0.0159 0.062 0.074 2021 6 16 59381 179.161 433.960 -176.9662 0.284 -0.141 0.026 0.019 0.0161 0.064 0.078 2021 6 17 59382 179.981 433.149 -176.5258 0.262 -0.197 0.026 0.020 0.0162 0.065 0.082 2021 6 18 59383 181.538 431.986 -176.2952 0.240 -0.252 0.026 0.020 0.0164 0.067 0.087 2021 6 19 59384 183.466 431.219 -176.2278 0.219 -0.266 0.027 0.020 0.0169 0.500 0.500 2021 6 20 59385 185.261 430.693 -176.2894 0.203 -0.248 0.027 0.021 0.0175 0.500 0.500 2021 6 21 59386 187.007 430.374 -176.2100 0.195 -0.209 0.028 0.021 0.0181 0.500 0.500 2021 6 22 59387 188.612 429.729 -175.9286 0.195 -0.173 0.029 0.022 0.0187 0.500 0.500 2021 6 23 59388 190.249 428.702 -175.4069 0.198 -0.154 0.029 0.022 0.0193 0.500 0.500 2021 6 24 59389 191.976 427.561 -174.6224 0.202 -0.156 0.030 0.023 0.0199 0.500 0.500 2021 6 25 59390 193.889 426.274 -173.5963 0.205 -0.170 0.031 0.024 0.0205 0.500 0.500 2021 6 26 59391 195.537 425.001 -172.4131 0.205 -0.180 0.031 0.024 0.0211 0.500 0.500 2021 6 27 59392 197.242 423.956 -171.1658 0.206 -0.180 0.032 0.025 0.0217 0.500 0.500 2021 6 28 59393 199.019 423.204 -170.0120 0.208 -0.171 0.033 0.026 0.0221 0.500 0.500 2021 6 29 59394 201.014 422.032 -169.0334 0.212 -0.162 0.034 0.027 0.0227 0.500 0.500 2021 6 30 59395 203.147 420.675 -168.2398 0.217 -0.159 0.035 0.028 0.0233 0.500 0.500 2021 7 1 59396 205.003 419.388 -167.4787 0.222 -0.163 0.037 0.030 0.0239 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 2021 5 2 59336 -105.392 -9.936 0.090 0.032 2021 5 3 59337 -105.435 -10.113 0.093 0.033 2021 5 4 59338 -105.659 -10.174 0.093 0.033 2021 5 5 59339 -105.759 -10.107 0.093 0.034 2021 5 6 59340 -105.659 -9.997 0.093 0.035 2021 5 7 59341 -105.509 -9.864 0.096 0.036 2021 5 8 59342 -105.519 -9.632 0.096 0.036 2021 5 9 59343 -105.761 -9.338 0.096 0.036 2021 5 10 59344 -106.060 -9.161 0.096 0.037 2021 5 11 59345 -106.211 -9.260 0.098 0.037 2021 5 12 59346 -106.142 -9.592 0.098 0.036 2021 5 13 59347 -105.971 -9.938 0.098 0.036 2021 5 14 59348 -105.857 -10.138 0.098 0.035 2021 5 15 59349 -105.951 -10.226 0.098 0.034 2021 5 16 59350 -106.179 -10.311 0.098 0.034 2021 5 17 59351 -106.327 -10.390 0.098 0.033 2021 5 18 59352 -106.203 -10.375 0.101 0.032 2021 5 19 59353 -105.891 -10.264 0.101 0.031 2021 5 20 59354 -105.602 -10.265 0.101 0.030 2021 5 21 59355 -105.556 -10.433 0.101 0.029 2021 5 22 59356 -105.780 -10.527 0.101 0.028 2021 5 23 59357 -106.114 -10.345 0.101 0.027 2021 5 24 59358 -106.686 -9.942 0.101 0.026 2021 5 25 59359 -107.551 -9.625 0.101 0.025 2021 5 26 59360 -108.338 -9.587 0.101 0.024 2021 5 27 59361 -108.444 -9.735 0.103 0.025 2021 5 28 59362 -107.950 -9.866 0.106 0.026 2021 5 29 59363 -107.322 -9.999 0.106 0.028 2021 5 30 59364 -106.855 -10.257 0.108 0.029 2021 5 31 59365 -106.711 -10.524 0.111 0.031 2021 6 1 59366 -106.911 -10.562 0.113 0.033 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 2021 5 2 59336 -0.2640 0.0066 15.04106722463 0.00000000115 2021 5 3 59337 -0.2949 0.0066 15.04106723001 0.00000000115 2021 5 4 59338 -0.2191 0.0066 15.04106721681 0.00000000115 2021 5 5 59339 -0.0554 0.0066 15.04106718831 0.00000000115 2021 5 6 59340 0.0973 0.0065 15.04106716173 0.00000000113 2021 5 7 59341 0.2145 0.0065 15.04106714133 0.00000000113 2021 5 8 59342 0.2700 0.0065 15.04106713167 0.00000000113 2021 5 9 59343 0.2301 0.0065 15.04106713861 0.00000000113 2021 5 10 59344 0.1781 0.0065 15.04106714767 0.00000000113 2021 5 11 59345 0.0832 0.0065 15.04106716419 0.00000000113 2021 5 12 59346 -0.0417 0.0065 15.04106718593 0.00000000113 2021 5 13 59347 -0.1604 0.0064 15.04106720659 0.00000000111 2021 5 14 59348 -0.2467 0.0065 15.04106722162 0.00000000113 2021 5 15 59349 -0.3065 0.0065 15.04106723203 0.00000000113 2021 5 16 59350 -0.3050 0.0065 15.04106723177 0.00000000113 2021 5 17 59351 -0.2399 0.0065 15.04106722043 0.00000000113 2021 5 18 59352 -0.1333 0.0065 15.04106720188 0.00000000113 2021 5 19 59353 0.0440 0.0066 15.04106717101 0.00000000115 2021 5 20 59354 0.2771 0.0066 15.04106713043 0.00000000115 2021 5 21 59355 0.4653 0.0066 15.04106709767 0.00000000115 2021 5 22 59356 0.6161 0.0066 15.04106707142 0.00000000115 2021 5 23 59357 0.7012 0.0066 15.04106705660 0.00000000115 2021 5 24 59358 0.6778 0.0065 15.04106706067 0.00000000113 2021 5 25 59359 0.5120 0.0065 15.04106708954 0.00000000113 2021 5 26 59360 0.2683 0.0066 15.04106713196 0.00000000115 2021 5 27 59361 -0.0135 0.0065 15.04106718102 0.00000000113 2021 5 28 59362 -0.2723 0.0065 15.04106722607 0.00000000113 2021 5 29 59363 -0.4259 0.0065 15.04106725281 0.00000000113 2021 5 30 59364 -0.4360 0.0065 15.04106725457 0.00000000113 2021 5 31 59365 -0.3658 0.0065 15.04106724235 0.00000000113 2021 6 1 59366 -0.2431 0.0065 15.04106722099 0.00000000113 4 - INFORMATION ON TIME SCALES TAI - UTC = 37 s. during period [59336-59366] No leap second introduced during period [59336-59366] 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 CGS cgs2007a.eops 73 123 9 - 0 0 8 59338.26 to 59362.31 110 178 24 - 614 389 BKG bkg00020a.eops 52 50 2 - 13 35 8 59338.21 to 59362.27 81 88 18 - 46 62 GSFC gsf2020a.eoxy 49 44 3 7 13 33 8 59338.21 to 59362.27 55 76 19 11 20 23 IAA iaa2021a.eops 43 46 2 - 11 31 8 59338.21 to 59362.27 63 162 21 - 78 70 USNO usn2021b.eoxy 39 38 2 - 14 34 8 59338.21 to 59362.27 50 66 21 - 50 21 IVS * ivs20r1X.eops 14 14 0 - 5 13 8 59338.22 to 59362.27 34 24 7 - 4 3 VLBI Intensive GSI * gsiint2c.eopi - - 6 - - - 8 59336.33 to 59364.33 - - 19 - - - BKG * bkg2020.eopi - - 11 - - - 30 59336.33 to 59365.79 - - 27 - - - GSFC * gsf2020a.eopi - - 11 - - - 30 59336.33 to 59365.79 - - 31 - - - IAA * iaa2021a.eopi - - 25 - - - 35 59336.33 to 59365.31 - - 30 - - - USNO * usn2021b.eopi - - 11 - - - 30 59336.33 to 59365.79 - - 34 - - - GPS CODE COD*ERP_R 5 5 - 0 - - 29 59336.50 to 59365.50 25 38 - 9 - - JPL jpl*.erp 10 11 - 5 - - 30 59336.50 to 59365.50 29 39 - 13 - - GFZ gfz*.erp 7 8 - 1 - - 30 59336.50 to 59365.50 31 44 - 12 - - ESOC esa*.erp 7 8 - 3 - - 30 59336.50 to 59365.50 27 45 - 11 - - SIO sio*.erp siu*.erp 28 27 - 5 - - 29 59336.50 to 59365.50 33 44 - 14 - - EMR emr*.erp 3 3 - 0 - - 30 59336.50 to 59365.50 42 51 - 12 - - IAA gnss.res 0 0 - 0 - - 30 59336.50 to 59365.50 56 70 - 19 - - GRGS grg*.erp 233 233 - 0 - - 30 59336.50 to 59365.50 32 31 - 10 - - ASI asi*.erp 8 8 - 0 - - 30 59336.50 to 59365.50 28 46 - 52 - - MIT mit*.erp 12 12 - 2 - - 30 59336.50 to 59365.50 30 37 - 14 - - IGR * igs96p02.erp 9 9 - 2 - - 30 59336.50 to 59365.50 21 34 - 12 - - IGS * igs00p03.erp 3 3 - 0 - - 30 59336.50 to 59365.50 26 35 - 13 - - SLR MCC tg*.02 194 222 - 28 - - 31 59336.00 to 59366.00 115 140 - 194 - - IAA slr_v.dat 67 77 - 5 - - 29 59336.00 to 59366.00 192 266 - 25 - - ASI slr_oca*.eop 78 87 - 18 - - 30 59336.50 to 59365.50 238 257 - 63 - - ILRS * ilrsa.eop 46 51 - 8 - - 30 59336.50 to 59365.50 158 143 - 20 - - BULLETIN A NEOS mark3.out 18 16 3 - - - 31 59336.00 to 59366.00 33 54 18 - - - To unsubscribe : http://hpiers.obspm.fr/eop-pc/products/bulletins/bulletin_registration.html