BULLETIN B 408 3 February 2022 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 0.026 0.019 0.0072 0.020 0.046 2021 12 2 59550 116.646 253.077 -107.3817 0.235 -0.125 0.026 0.020 0.0067 0.048 0.038 2021 12 3 59551 115.236 254.139 -107.7758 0.265 -0.108 0.026 0.020 0.0067 0.048 0.039 2021 12 4 59552 113.528 254.463 -107.9062 0.270 -0.106 0.026 0.020 0.0069 0.047 0.039 2021 12 5 59553 112.210 254.544 -107.7891 0.266 -0.109 0.026 0.020 0.0070 0.047 0.040 2021 12 6 59554 110.933 255.126 -107.5299 0.263 -0.112 0.025 0.019 0.0072 0.047 0.041 2021 12 7 59555 109.262 255.631 -107.2636 0.259 -0.116 0.025 0.019 0.0073 0.047 0.041 2021 12 8 59556 106.686 256.326 -107.1092 0.249 -0.116 0.025 0.019 0.0071 0.048 0.042 2021 12 9 59557 103.984 256.757 -107.1653 0.237 -0.116 0.025 0.019 0.0072 0.048 0.043 2021 12 10 59558 101.414 257.116 -107.4002 0.225 -0.115 0.025 0.019 0.0071 0.048 0.043 2021 12 11 59559 98.426 257.383 -107.7748 0.239 -0.111 0.025 0.019 0.0073 0.049 0.044 2021 12 12 59560 95.231 257.384 -108.2102 0.263 -0.105 0.025 0.019 0.0074 0.049 0.044 2021 12 13 59561 92.509 257.408 -108.6201 0.286 -0.099 0.025 0.019 0.0076 0.049 0.045 2021 12 14 59562 90.306 258.026 -108.9586 0.310 -0.093 0.025 0.019 0.0071 0.050 0.045 2021 12 15 59563 87.829 258.992 -109.1980 0.278 -0.106 0.025 0.019 0.0069 0.050 0.046 2021 12 16 59564 85.353 259.707 -109.3060 0.232 -0.124 0.025 0.019 0.0069 0.050 0.047 2021 12 17 59565 82.621 260.745 -109.2661 0.186 -0.142 0.025 0.019 0.0067 0.051 0.047 2021 12 18 59566 80.179 261.328 -109.0678 0.193 -0.128 0.025 0.018 0.0069 0.051 0.047 2021 12 19 59567 78.732 261.660 -108.7469 0.220 -0.102 0.025 0.018 0.0069 0.051 0.047 2021 12 20 59568 77.355 262.569 -108.3780 0.247 -0.076 0.026 0.018 0.0069 0.051 0.046 2021 12 21 59569 75.405 263.444 -107.9991 0.274 -0.050 0.026 0.018 0.0068 0.052 0.046 2021 12 22 59570 73.133 264.278 -107.6234 0.250 -0.038 0.026 0.018 0.0070 0.052 0.047 2021 12 23 59571 70.881 265.173 -107.3418 0.213 -0.030 0.026 0.018 0.0070 0.053 0.049 2021 12 24 59572 68.514 266.510 -107.2445 0.223 -0.073 0.030 0.021 0.0071 0.053 0.050 2021 12 25 59573 66.054 267.813 -107.3681 0.252 -0.135 0.029 0.022 0.0072 0.053 0.051 2021 12 26 59574 64.264 268.977 -107.7173 0.280 -0.197 0.029 0.022 0.0073 0.054 0.053 2021 12 27 59575 62.771 270.366 -108.2590 0.309 -0.259 0.029 0.022 0.0074 0.054 0.054 2021 12 28 59576 61.119 271.893 -108.9162 0.337 -0.320 0.029 0.022 0.0078 0.055 0.056 2021 12 29 59577 59.184 273.531 -109.5688 0.222 -0.324 0.029 0.022 0.0076 0.055 0.056 2021 12 30 59578 57.753 274.728 -110.1029 0.068 -0.311 0.029 0.022 0.0078 0.055 0.056 2021 12 31 59579 56.304 275.973 -110.4355 0.040 -0.287 0.028 0.022 0.0080 0.056 0.056 2022 1 1 59580 54.574 276.983 -110.5197 0.059 -0.259 0.028 0.022 0.0082 0.056 0.055 Preliminary extension 2022 1 2 59581 53.381 277.886 -110.3891 0.077 -0.230 0.027 0.022 0.0083 0.056 0.054 2022 1 3 59582 52.855 278.999 -110.1398 0.095 -0.202 0.027 0.022 0.0084 0.057 0.053 2022 1 4 59583 53.294 280.607 -109.9190 0.114 -0.174 0.027 0.022 0.0075 0.057 0.053 2022 1 5 59584 53.559 282.963 -109.8697 0.132 -0.152 0.026 0.022 0.0074 0.057 0.052 2022 1 6 59585 53.040 285.048 -110.0267 0.150 -0.132 0.026 0.022 0.0075 0.057 0.051 2022 1 7 59586 51.850 286.981 -110.3611 0.169 -0.113 0.025 0.022 0.0075 0.058 0.051 2022 1 8 59587 50.225 288.674 -110.7884 0.194 -0.092 0.025 0.022 0.0075 0.058 0.050 2022 1 9 59588 48.602 290.230 -111.2272 0.222 -0.071 0.025 0.022 0.0076 0.058 0.049 2022 1 10 59589 47.153 291.474 -111.6097 0.249 -0.050 0.024 0.022 0.0076 0.059 0.049 2022 1 11 59590 45.597 292.578 -111.8704 0.277 -0.029 0.025 0.022 0.0076 0.059 0.048 2022 1 12 59591 44.205 293.451 -111.9567 0.267 -0.033 0.025 0.022 0.0077 0.059 0.048 2022 1 13 59592 43.388 294.342 -111.8576 0.248 -0.044 0.025 0.022 0.0078 0.060 0.048 2022 1 14 59593 43.117 295.842 -111.5885 0.228 -0.055 0.025 0.022 0.0078 0.060 0.048 2022 1 15 59594 43.133 297.841 -111.1344 0.215 -0.072 0.025 0.022 0.0080 0.061 0.050 2022 1 16 59595 42.518 299.920 -110.6106 0.204 -0.091 0.025 0.023 0.0082 0.062 0.052 2022 1 17 59596 41.553 301.460 -109.9921 0.193 -0.111 0.025 0.023 0.0083 0.063 0.054 2022 1 18 59597 39.906 303.009 -109.3666 0.182 -0.130 0.025 0.023 0.0085 0.064 0.056 2022 1 19 59598 38.425 303.952 -108.8170 0.171 -0.150 0.026 0.023 0.0088 0.064 0.059 2022 1 20 59599 37.823 305.042 -108.4482 0.166 -0.160 0.026 0.024 0.0091 0.500 0.500 2022 1 21 59600 37.474 306.189 -108.2769 0.169 -0.162 0.026 0.024 0.0094 0.500 0.500 2022 1 22 59601 36.989 307.336 -108.3198 0.176 -0.158 0.027 0.024 0.0097 0.500 0.500 2022 1 23 59602 36.003 308.627 -108.5063 0.183 -0.154 0.028 0.024 0.0099 0.500 0.500 2022 1 24 59603 34.461 310.095 -108.7507 0.184 -0.152 0.028 0.024 0.0102 0.500 0.500 2022 1 25 59604 32.750 311.513 -109.0038 0.178 -0.154 0.029 0.025 0.0105 0.500 0.500 2022 1 26 59605 31.327 312.799 -109.1992 0.168 -0.158 0.030 0.025 0.0109 0.500 0.500 2022 1 27 59606 30.247 314.098 -109.2481 0.158 -0.159 0.031 0.025 0.0113 0.500 0.500 2022 1 28 59607 29.071 315.667 -109.0070 0.152 -0.156 0.032 0.026 0.0117 0.500 0.500 2022 1 29 59608 28.282 317.122 -108.4705 0.152 -0.149 0.034 0.027 0.0121 0.500 0.500 2022 1 30 59609 27.625 319.023 -108.3707 0.156 -0.141 0.035 0.028 0.0124 0.500 0.500 2022 1 31 59610 26.632 320.997 -107.8155 0.157 -0.137 0.036 0.028 0.0128 0.500 0.500 2022 2 1 59611 26.110 323.007 -107.3620 0.156 -0.137 0.038 0.029 0.0132 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 12 2 59550 -111.874 -5.966 0.121 0.038 2021 12 3 59551 -112.122 -5.874 0.121 0.039 2021 12 4 59552 -112.187 -6.031 0.118 0.039 2021 12 5 59553 -111.884 -6.154 0.118 0.040 2021 12 6 59554 -111.458 -6.078 0.118 0.041 2021 12 7 59555 -111.227 -6.002 0.118 0.041 2021 12 8 59556 -111.176 -6.134 0.121 0.042 2021 12 9 59557 -111.132 -6.338 0.121 0.043 2021 12 10 59558 -111.095 -6.308 0.121 0.043 2021 12 11 59559 -111.085 -5.998 0.123 0.044 2021 12 12 59560 -111.113 -5.653 0.123 0.044 2021 12 13 59561 -111.139 -5.474 0.123 0.045 2021 12 14 59562 -111.161 -5.420 0.126 0.045 2021 12 15 59563 -111.310 -5.388 0.126 0.046 2021 12 16 59564 -111.400 -5.371 0.126 0.047 2021 12 17 59565 -111.355 -5.475 0.128 0.047 2021 12 18 59566 -111.129 -5.691 0.128 0.047 2021 12 19 59567 -110.910 -5.904 0.128 0.047 2021 12 20 59568 -110.743 -5.989 0.128 0.046 2021 12 21 59569 -110.539 -5.957 0.131 0.046 2021 12 22 59570 -110.373 -5.927 0.131 0.047 2021 12 23 59571 -110.167 -5.926 0.133 0.049 2021 12 24 59572 -109.820 -5.942 0.133 0.050 2021 12 25 59573 -109.476 -5.912 0.133 0.051 2021 12 26 59574 -109.284 -5.893 0.136 0.053 2021 12 27 59575 -109.258 -5.955 0.136 0.054 2021 12 28 59576 -109.321 -6.008 0.138 0.056 2021 12 29 59577 -109.829 -5.847 0.138 0.056 2021 12 30 59578 -110.666 -5.562 0.138 0.056 2021 12 31 59579 -111.412 -5.426 0.141 0.056 2022 1 1 59580 -111.899 -5.573 0.141 0.055 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 12 2 59550 0.4702 0.0066 15.04106709681 0.00000000115 2021 12 3 59551 0.2768 0.0065 15.04106713048 0.00000000113 2021 12 4 59552 -0.0071 0.0065 15.04106717991 0.00000000113 2021 12 5 59553 -0.2049 0.0065 15.04106721434 0.00000000113 2021 12 6 59554 -0.2631 0.0064 15.04106722447 0.00000000111 2021 12 7 59555 -0.1957 0.0063 15.04106721274 0.00000000110 2021 12 8 59556 -0.0541 0.0063 15.04106718809 0.00000000110 2021 12 9 59557 0.1373 0.0063 15.04106715477 0.00000000110 2021 12 10 59558 0.3090 0.0062 15.04106712488 0.00000000108 2021 12 11 59559 0.4257 0.0062 15.04106710456 0.00000000108 2021 12 12 59560 0.4477 0.0062 15.04106710073 0.00000000108 2021 12 13 59561 0.3713 0.0062 15.04106711403 0.00000000108 2021 12 14 59562 0.2966 0.0062 15.04106712704 0.00000000108 2021 12 15 59563 0.1665 0.0062 15.04106714968 0.00000000108 2021 12 16 59564 0.0223 0.0061 15.04106717479 0.00000000106 2021 12 17 59565 -0.1186 0.0061 15.04106719932 0.00000000106 2021 12 18 59566 -0.2676 0.0061 15.04106722526 0.00000000106 2021 12 19 59567 -0.3304 0.0061 15.04106723619 0.00000000106 2021 12 20 59568 -0.3631 0.0061 15.04106724188 0.00000000106 2021 12 21 59569 -0.3958 0.0061 15.04106724757 0.00000000106 2021 12 22 59570 -0.3472 0.0061 15.04106723911 0.00000000106 2021 12 23 59571 -0.1681 0.0061 15.04106720793 0.00000000106 2021 12 24 59572 0.0386 0.0065 15.04106717195 0.00000000113 2021 12 25 59573 0.2146 0.0065 15.04106714131 0.00000000113 2021 12 26 59574 0.4337 0.0066 15.04106710317 0.00000000115 2021 12 27 59575 0.6074 0.0066 15.04106707293 0.00000000115 2021 12 28 59576 0.6456 0.0066 15.04106706628 0.00000000115 2021 12 29 59577 0.5855 0.0066 15.04106707674 0.00000000115 2021 12 30 59578 0.4366 0.0066 15.04106710266 0.00000000115 2021 12 31 59579 0.1907 0.0065 15.04106714547 0.00000000113 2022 1 1 59580 -0.0357 0.0066 15.04106718489 0.00000000115 4 - INFORMATION ON TIME SCALES TAI - UTC = 37 s. during period [59550-59580] No leap second introduced during period [59550-59580] 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 56 68 7 - 0 0 9 59551.24 to 59578.28 250 190 22 - 98 299 BKG bkg2020a.eoxy 49 51 2 - 12 34 11 59551.27 to 59578.27 93 137 17 - 28 59 GSFC gsf2020a.eoxy 73 60 3 8 21 52 11 59551.27 to 59578.27 113 231 17 20 52 76 IAA iaa2021a.eops 62 61 3 - 18 46 6 59551.27 to 59569.21 228 128 20 - 50 86 USNO usn2021c.eoxy 30 28 1 - 11 30 9 59551.27 to 59578.27 59 74 15 - 18 17 IVS * ivs20r1X.eops 13 13 0 - 4 12 9 59551.26 to 59578.27 90 130 16 - 10 5 VLBI Intensive GSI * gsiint2c.eopi - - 9 - - - 6 59552.33 to 59567.33 - - 12 - - - BKG * bkg2020.eopi - - 14 - - - 31 59550.79 to 59579.79 - - 61 - - - GSFC * gsf2020a.eopi - - 20 - - - 32 59550.79 to 59579.79 - - 147 - - - IAA * iaa2021a.eopi - - 27 - - - 42 59550.79 to 59578.80 - - 34 - - - USNO * usn2021c.eopi - - 15 - - - 31 59550.79 to 59579.79 - - 50 - - - GPS CODE COD*ERP_R 5 5 - 0 - - 30 59550.50 to 59579.50 32 34 - 18 - - JPL jpl*.erp 12 12 - 5 - - 30 59550.50 to 59579.50 37 42 - 27 - - GFZ gfz*.erp 8 9 - 2 - - 30 59550.50 to 59579.50 37 37 - 17 - - ESOC esa*.erp 8 9 - 3 - - 30 59550.50 to 59579.50 35 36 - 18 - - SIO sio*.erp siu*.erp 30 29 - 5 - - 30 59550.50 to 59579.50 49 37 - 19 - - EMR emr*.erp 3 3 - 0 - - 30 59550.50 to 59579.50 52 50 - 19 - - IAA gnss.res 0 0 - 0 - - 29 59550.50 to 59579.50 66 80 - 25 - - GRGS grg*.erp 225 225 - 0 - - 30 59550.50 to 59579.50 25 26 - 16 - - ASI asi*.erp 10 10 - 0 - - 30 59550.50 to 59579.50 47 34 - 1 - - MIT mit*.erp 13 12 - 1 - - 30 59550.50 to 59579.50 46 41 - 18 - - IGR * igs96p02.erp 10 9 - 2 - - 30 59550.50 to 59579.50 29 26 - 13 - - IGS * igs00p03.erp - - - - - - - 59550.50 to 59579.50 - - - - - - SLR MCC tg*.02 195 218 - 41 - - 11 59550.00 to 59560.00 103 127 - 156 - - IAA slr_v.dat 78 85 - 5 - - 30 59550.00 to 59580.00 247 268 - 23 - - ASI slr_oca*.eop 73 77 - 20 - - 30 59550.50 to 59579.50 234 284 - 78 - - ILRS * ilrsa.eop 55 55 - 9 - - 30 59550.50 to 59579.50 161 215 - 28 - - BULLETIN A NEOS mark3.out 27 30 4 - - - 31 59550.00 to 59580.00 49 39 22 - - - To unsubscribe : http://hpiers.obspm.fr/eop-pc/products/bulletins/bulletin_registration.html