BULLETIN B 406 2 December 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 0.019 0.0078 0.018 0.037 2021 10 2 59489 219.232 278.385 -104.6635 0.288 -0.132 0.025 0.020 0.0072 0.037 0.026 2021 10 3 59490 218.114 277.440 -104.2262 0.301 -0.145 0.025 0.020 0.0071 0.036 0.024 2021 10 4 59491 216.463 276.398 -104.0412 0.314 -0.158 0.025 0.020 0.0070 0.036 0.023 2021 10 5 59492 214.966 275.265 -104.1427 0.326 -0.172 0.025 0.020 0.0067 0.036 0.022 2021 10 6 59493 212.886 274.073 -104.5130 0.255 -0.172 0.025 0.020 0.0065 0.036 0.023 2021 10 7 59494 210.670 272.310 -105.0355 0.164 -0.169 0.025 0.020 0.0068 0.037 0.024 2021 10 8 59495 208.740 270.354 -105.5552 0.073 -0.166 0.024 0.020 0.0071 0.038 0.026 2021 10 9 59496 206.987 268.630 -105.9176 0.080 -0.140 0.024 0.020 0.0073 0.038 0.027 2021 10 10 59497 205.587 267.049 -106.0489 0.122 -0.105 0.025 0.020 0.0075 0.039 0.028 2021 10 11 59498 204.294 265.940 -105.9506 0.164 -0.071 0.025 0.020 0.0075 0.040 0.029 2021 10 12 59499 202.929 265.318 -105.6985 0.206 -0.037 0.025 0.020 0.0075 0.040 0.031 2021 10 13 59500 201.347 265.115 -105.3769 0.249 -0.003 0.025 0.020 0.0076 0.041 0.032 2021 10 14 59501 199.531 264.474 -105.0561 0.253 -0.031 0.025 0.020 0.0074 0.042 0.034 2021 10 15 59502 197.144 264.052 -104.8215 0.247 -0.076 0.025 0.019 0.0075 0.042 0.035 2021 10 16 59503 194.540 263.311 -104.7296 0.238 -0.079 0.025 0.019 0.0077 0.043 0.036 2021 10 17 59504 192.522 262.732 -104.7961 0.228 -0.068 0.025 0.019 0.0079 0.044 0.037 2021 10 18 59505 190.330 262.116 -104.9797 0.218 -0.056 0.025 0.019 0.0080 0.044 0.037 2021 10 19 59506 188.419 261.094 -105.3261 0.207 -0.044 0.025 0.019 0.0075 0.045 0.038 2021 10 20 59507 186.951 260.372 -105.6852 0.226 -0.066 0.025 0.019 0.0077 0.046 0.040 2021 10 21 59508 185.890 259.671 -105.9933 0.253 -0.096 0.025 0.019 0.0079 0.047 0.042 2021 10 22 59509 185.109 258.931 -106.1695 0.280 -0.127 0.025 0.019 0.0078 0.048 0.044 2021 10 23 59510 183.997 258.126 -106.1599 0.282 -0.110 0.025 0.019 0.0080 0.049 0.045 2021 10 24 59511 182.170 256.859 -105.9532 0.275 -0.073 0.025 0.018 0.0082 0.050 0.047 2021 10 25 59512 180.765 255.674 -105.5673 0.267 -0.036 0.025 0.018 0.0083 0.050 0.049 2021 10 26 59513 179.443 255.135 -105.0710 0.259 0.001 0.025 0.018 0.0086 0.051 0.051 2021 10 27 59514 177.475 254.614 -104.5560 0.244 -0.029 0.025 0.018 0.0088 0.052 0.052 2021 10 28 59515 174.986 254.210 -104.0921 0.226 -0.076 0.025 0.018 0.0090 0.053 0.053 2021 10 29 59516 172.883 253.703 -103.7503 0.209 -0.124 0.025 0.018 0.0088 0.054 0.054 2021 10 30 59517 171.153 253.485 -103.5881 0.211 -0.123 0.025 0.018 0.0090 0.055 0.055 2021 10 31 59518 169.153 253.030 -103.6762 0.221 -0.105 0.025 0.018 0.0091 0.056 0.056 2021 11 1 59519 167.161 252.590 -104.0619 0.230 -0.087 0.025 0.018 0.0095 0.058 0.057 Preliminary extension 2021 11 2 59520 165.421 252.037 -104.7142 0.239 -0.069 0.025 0.018 0.0096 0.059 0.057 2021 11 3 59521 164.345 251.154 -105.5305 0.249 -0.051 0.025 0.018 0.0099 0.060 0.058 2021 11 4 59522 163.383 250.407 -106.3598 0.200 -0.036 0.025 0.018 0.0101 0.061 0.059 2021 11 5 59523 161.528 249.782 -107.0350 0.135 -0.022 0.025 0.018 0.0103 0.062 0.060 2021 11 6 59524 158.958 249.274 -107.4216 0.153 -0.035 0.025 0.018 0.0106 0.064 0.063 2021 11 7 59525 156.430 248.766 -107.5060 0.204 -0.058 0.026 0.018 0.0110 0.065 0.066 2021 11 8 59526 154.363 248.058 -107.3846 0.255 -0.081 0.026 0.019 0.0114 0.067 0.071 2021 11 9 59527 152.507 247.564 -107.1714 0.306 -0.105 0.026 0.019 0.0118 0.068 0.075 2021 11 10 59528 150.782 247.124 -106.9622 0.309 -0.112 0.026 0.019 0.0122 0.070 0.080 2021 11 11 59529 149.473 246.782 -106.8780 0.300 -0.114 0.027 0.019 0.0127 0.072 0.085 2021 11 12 59530 148.469 246.564 -106.9730 0.290 -0.117 0.027 0.019 0.0131 0.074 0.090 2021 11 13 59531 147.698 246.452 -107.2526 0.281 -0.119 0.027 0.020 0.0136 0.076 0.096 2021 11 14 59532 147.038 246.464 -107.6527 0.272 -0.121 0.028 0.020 0.0141 0.078 0.102 2021 11 15 59533 145.830 246.352 -108.0035 0.262 -0.124 0.028 0.020 0.0146 0.080 0.109 2021 11 16 59534 143.550 246.019 -108.2778 0.253 -0.126 0.028 0.020 0.0150 0.082 0.116 2021 11 17 59535 141.386 245.352 -108.4634 0.251 -0.123 0.029 0.020 0.0156 0.500 0.500 2021 11 18 59536 139.782 245.077 -108.5235 0.254 -0.118 0.029 0.020 0.0161 0.500 0.500 2021 11 19 59537 137.874 245.255 -108.4447 0.261 -0.115 0.030 0.021 0.0167 0.500 0.500 2021 11 20 59538 135.480 245.277 -108.2182 0.270 -0.117 0.030 0.021 0.0173 0.500 0.500 2021 11 21 59539 133.418 245.935 -107.7767 0.278 -0.124 0.030 0.022 0.0179 0.500 0.500 2021 11 22 59540 131.580 246.931 -107.2811 0.283 -0.133 0.031 0.022 0.0184 0.500 0.500 2021 11 23 59541 129.613 247.356 -106.7492 0.281 -0.140 0.031 0.022 0.0189 0.500 0.500 2021 11 24 59542 127.760 247.263 -106.2161 0.276 -0.146 0.032 0.023 0.0194 0.500 0.500 2021 11 25 59543 126.551 247.704 -105.6858 0.270 -0.150 0.033 0.024 0.0199 0.500 0.500 2021 11 26 59544 125.294 248.342 -105.2428 0.264 -0.154 0.033 0.024 0.0204 0.500 0.500 2021 11 27 59545 123.932 249.152 -105.2937 0.261 -0.159 0.034 0.025 0.0208 0.500 0.500 2021 11 28 59546 122.484 250.186 -105.4524 0.258 -0.163 0.036 0.026 0.0212 0.500 0.500 2021 11 29 59547 120.942 250.806 -105.7580 0.252 -0.164 0.037 0.027 0.0216 0.500 0.500 2021 11 30 59548 119.451 251.414 -106.2787 0.242 -0.161 0.039 0.028 0.0219 0.500 0.500 2021 12 1 59549 117.921 252.158 -106.8608 0.230 -0.154 0.041 0.029 0.0222 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 10 2 59489 -116.396 -9.043 0.093 0.026 2021 10 3 59490 -116.108 -8.872 0.090 0.024 2021 10 4 59491 -116.115 -8.648 0.090 0.023 2021 10 5 59492 -116.245 -8.435 0.090 0.022 2021 10 6 59493 -116.543 -8.305 0.090 0.023 2021 10 7 59494 -116.846 -8.364 0.093 0.024 2021 10 8 59495 -117.140 -8.593 0.096 0.026 2021 10 9 59496 -117.149 -8.775 0.096 0.027 2021 10 10 59497 -117.008 -8.734 0.098 0.028 2021 10 11 59498 -116.845 -8.499 0.101 0.029 2021 10 12 59499 -116.696 -8.264 0.101 0.031 2021 10 13 59500 -116.533 -8.163 0.103 0.032 2021 10 14 59501 -116.392 -8.233 0.106 0.034 2021 10 15 59502 -116.168 -8.339 0.106 0.035 2021 10 16 59503 -115.892 -8.371 0.108 0.036 2021 10 17 59504 -115.671 -8.326 0.111 0.037 2021 10 18 59505 -115.586 -8.172 0.111 0.037 2021 10 19 59506 -115.599 -7.898 0.113 0.038 2021 10 20 59507 -115.532 -7.637 0.116 0.040 2021 10 21 59508 -115.408 -7.531 0.118 0.042 2021 10 22 59509 -115.283 -7.652 0.121 0.044 2021 10 23 59510 -115.214 -7.852 0.123 0.045 2021 10 24 59511 -115.105 -7.981 0.126 0.047 2021 10 25 59512 -114.951 -7.995 0.126 0.049 2021 10 26 59513 -114.842 -7.976 0.128 0.051 2021 10 27 59514 -114.798 -8.064 0.131 0.052 2021 10 28 59515 -114.636 -8.154 0.133 0.053 2021 10 29 59516 -114.222 -8.112 0.136 0.054 2021 10 30 59517 -113.712 -7.886 0.138 0.055 2021 10 31 59518 -113.489 -7.636 0.141 0.056 2021 11 1 59519 -113.648 -7.463 0.146 0.057 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 10 2 59489 -0.5041 0.0068 15.04106726643 0.00000000118 2021 10 3 59490 -0.3168 0.0068 15.04106723382 0.00000000118 2021 10 4 59491 -0.0538 0.0068 15.04106718804 0.00000000118 2021 10 5 59492 0.2367 0.0068 15.04106713746 0.00000000118 2021 10 6 59493 0.4438 0.0068 15.04106710141 0.00000000118 2021 10 7 59494 0.5448 0.0067 15.04106708383 0.00000000117 2021 10 8 59495 0.4758 0.0068 15.04106709584 0.00000000118 2021 10 9 59496 0.2801 0.0068 15.04106712991 0.00000000118 2021 10 10 59497 0.0458 0.0068 15.04106717070 0.00000000118 2021 10 11 59498 -0.2003 0.0068 15.04106721354 0.00000000118 2021 10 12 59499 -0.3003 0.0068 15.04106723095 0.00000000118 2021 10 13 59500 -0.3296 0.0068 15.04106723605 0.00000000118 2021 10 14 59501 -0.2785 0.0069 15.04106722715 0.00000000120 2021 10 15 59502 -0.1786 0.0068 15.04106720976 0.00000000118 2021 10 16 59503 -0.0160 0.0068 15.04106718146 0.00000000118 2021 10 17 59504 0.1436 0.0068 15.04106715367 0.00000000118 2021 10 18 59505 0.2729 0.0068 15.04106713116 0.00000000118 2021 10 19 59506 0.3283 0.0068 15.04106712152 0.00000000118 2021 10 20 59507 0.3063 0.0068 15.04106712535 0.00000000118 2021 10 21 59508 0.2542 0.0069 15.04106713442 0.00000000120 2021 10 22 59509 0.1074 0.0068 15.04106715997 0.00000000118 2021 10 23 59510 -0.1073 0.0068 15.04106719735 0.00000000118 2021 10 24 59511 -0.3135 0.0068 15.04106723325 0.00000000118 2021 10 25 59512 -0.4478 0.0069 15.04106725663 0.00000000120 2021 10 26 59513 -0.4914 0.0069 15.04106726422 0.00000000120 2021 10 27 59514 -0.4736 0.0069 15.04106726112 0.00000000120 2021 10 28 59515 -0.4235 0.0070 15.04106725240 0.00000000122 2021 10 29 59516 -0.2679 0.0070 15.04106722531 0.00000000122 2021 10 30 59517 -0.0628 0.0070 15.04106718960 0.00000000122 2021 10 31 59518 0.2284 0.0071 15.04106713891 0.00000000124 2021 11 1 59519 0.5226 0.0069 15.04106708769 0.00000000120 4 - INFORMATION ON TIME SCALES TAI - UTC = 37 s. during period [59489-59519] No leap second introduced during period [59489-59519] 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 83 95 7 - 0 0 8 59492.15 to 59516.27 224 204 22 - 173 340 BKG bkg00020a.eops 47 50 3 - 11 34 8 59492.21 to 59516.27 71 57 16 - 32 50 GSFC gsf2020a.eoxy 44 41 3 6 11 31 8 59492.21 to 59516.27 47 58 16 24 19 27 IAA iaa2021a.eops 34 38 2 - 10 27 7 59492.21 to 59516.27 183 195 17 - 47 61 USNO usn2021c.eoxy 34 36 2 - 13 35 7 59492.21 to 59513.21 36 55 16 - 34 32 IVS * ivs20r1X.eops 14 15 1 - 4 13 8 59492.19 to 59516.27 38 33 12 - 9 4 VLBI Intensive GSI * gsiint2c.eopi - - 7 - - - 6 59503.33 to 59518.33 - - 39 - - - BKG * bkg2020.eopi - - 14 - - - 28 59492.79 to 59518.33 - - 28 - - - GSFC * gsf2020a.eopi - - 18 - - - 28 59492.79 to 59518.33 - - 150 - - - IAA * iaa2021a.eopi - - 36 - - - 35 59492.79 to 59518.33 - - 37 - - - USNO * usn2021b.eopi - - 16 - - - 28 59492.79 to 59518.33 - - 26 - - - GPS CODE COD*ERP_R 5 5 - 0 - - 30 59489.50 to 59518.50 29 36 - 16 - - JPL jpl*.erp 12 13 - 7 - - 30 59489.50 to 59518.50 39 36 - 21 - - GFZ gfz*.erp 7 8 - 2 - - 30 59489.50 to 59518.50 34 41 - 15 - - ESOC esa*.erp 7 8 - 3 - - 30 59489.50 to 59518.50 41 41 - 13 - - SIO sio*.erp siu*.erp 31 28 - 5 - - 30 59489.50 to 59518.50 36 41 - 15 - - EMR emr*.erp 3 3 - 0 - - 30 59489.50 to 59518.50 48 62 - 15 - - IAA gnss.res 0 0 - 0 - - 30 59489.50 to 59518.50 54 65 - 21 - - GRGS grg*.erp 228 228 - 0 - - 30 59489.50 to 59518.50 30 28 - 14 - - ASI asi*.erp 9 9 - 0 - - 30 59489.50 to 59518.50 53 43 - 62 - - MIT mit*.erp 13 12 - 1 - - 30 59489.50 to 59518.50 38 44 - 15 - - IGR * igs96p02.erp 10 10 - 2 - - 30 59489.50 to 59518.50 28 34 - 13 - - IGS * igs00p03.erp 3 3 - 0 - - 30 59489.50 to 59518.50 31 36 - 14 - - SLR MCC tg*.02 167 204 - 31 - - 31 59489.00 to 59519.00 117 161 - 204 - - IAA slr_v.dat 56 65 - 4 - - 31 59489.00 to 59519.00 158 166 - 23 - - ASI slr_oca*.eop 70 82 - 17 - - 30 59489.50 to 59518.50 205 191 - 62 - - ILRS * ilrsa.eop 48 53 - 8 - - 30 59489.50 to 59518.50 144 200 - 30 - - BULLETIN A NEOS mark3.out 20 22 4 - - - 31 59489.00 to 59519.00 53 46 28 - - - To unsubscribe : http://hpiers.obspm.fr/eop-pc/products/bulletins/bulletin_registration.html