********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 19 January 2012 Vol. XXV No. 003 ______________________________________________________________________ GENERAL INFORMATION: To receive this information electronically, contact: ser7@maia.usno.navy.mil or use MJD = Julian Date - 2 400 000.5 days UT2-UT1 = 0.022 sin(2*pi*T) - 0.012 cos(2*pi*T) - 0.006 sin(4*pi*T) + 0.007 cos(4*pi*T) where pi = 3.14159265... and T is the date in Besselian years. TT = TAI + 32.184 seconds DUT1= (UT1-UTC) transmitted with time signals = -0.4 seconds beginning 04 Nov 2011 at 0000 UTC = -0.5 seconds beginning 09 Feb 2012 at 0000 UTC Beginning 1 January 2009: TAI-UTC = 34.000 000 seconds *********************************************************************** * A positive leap second WILL be introduced * * in UTC on 30 June 2012. * *********************************************************************** ________________________________________________________________________ The contributed observations used in the preparation of this Bulletin are available at . The contributed analysis results are based on data from Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR), the Global Positioning System (GPS) satellites, Lunar Laser Ranging (LLR), and meteorological predictions of variations in Atmospheric Angular Momentum (AAM). ________________________________________________________________________ COMBINED EARTH ORIENTATION PARAMETERS: IERS Rapid Service MJD x error y error UT1-UTC error " " " " s s 12 1 13 55939 0.09734 .00010 0.25451 .00009 -0.431007 0.000011 12 1 14 55940 0.09618 .00010 0.25433 .00009 -0.432525 0.000010 12 1 15 55941 0.09495 .00010 0.25435 .00009 -0.434022 0.000009 12 1 16 55942 0.09357 .00010 0.25457 .00009 -0.435422 0.000009 12 1 17 55943 0.09176 .00010 0.25487 .00009 -0.436666 0.000008 12 1 18 55944 0.08964 .00009 0.25481 .00009 -0.437726 0.000008 12 1 19 55945 0.08746 .00009 0.25441 .00009 -0.438580 0.000004 _______________________________________________________________________ PREDICTIONS: The following formulas will not reproduce the predictions given below, but may be used to extend the predictions beyond the end of this table. x = 0.0838 - 0.0537 cos A - 0.1100 sin A + 0.0568 cos C + 0.0226 sin C y = 0.3316 - 0.1024 cos A + 0.0447 sin A + 0.0226 cos C - 0.0568 sin C UT1-UTC = -0.4526 - 0.00087 (MJD - 55953) - (UT2-UT1) where A = 2*pi*(MJD-55945)/365.25 and C = 2*pi*(MJD-55945)/435. TAI-UTC(MJD 55946) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55945)**0.80 S t = 0.00025 (MJD-55945)**0.75 Estimated accuracies are: Predictions 10 d 20 d 30 d 40 d Polar coord's 0.004 0.007 0.010 0.013 UT1-UTC 0.0014 0.0024 0.0032 0.0040 MJD x(arcsec) y(arcsec) UT1-UTC(sec) 2012 1 20 55946 0.0857 0.2540 -0.43926 2012 1 21 55947 0.0841 0.2538 -0.43988 2012 1 22 55948 0.0826 0.2537 -0.44057 2012 1 23 55949 0.0812 0.2538 -0.44137 2012 1 24 55950 0.0799 0.2541 -0.44227 2012 1 25 55951 0.0786 0.2544 -0.44321 2012 1 26 55952 0.0773 0.2548 -0.44417 2012 1 27 55953 0.0760 0.2552 -0.44511 2012 1 28 55954 0.0748 0.2557 -0.44601 2012 1 29 55955 0.0736 0.2562 -0.44689 2012 1 30 55956 0.0725 0.2567 -0.44772 2012 1 31 55957 0.0714 0.2572 -0.44846 2012 2 1 55958 0.0703 0.2578 -0.44914 2012 2 2 55959 0.0692 0.2584 -0.44979 2012 2 3 55960 0.0681 0.2590 -0.45043 2012 2 4 55961 0.0671 0.2597 -0.45112 2012 2 5 55962 0.0661 0.2603 -0.45190 2012 2 6 55963 0.0651 0.2610 -0.45285 2012 2 7 55964 0.0641 0.2617 -0.45401 2012 2 8 55965 0.0631 0.2624 -0.45541 2012 2 9 55966 0.0622 0.2631 -0.45703 2012 2 10 55967 0.0613 0.2639 -0.45879 2012 2 11 55968 0.0604 0.2646 -0.46062 2012 2 12 55969 0.0595 0.2654 -0.46239 2012 2 13 55970 0.0586 0.2662 -0.46400 2012 2 14 55971 0.0578 0.2670 -0.46541 2012 2 15 55972 0.0569 0.2678 -0.46663 2012 2 16 55973 0.0561 0.2686 -0.46773 2012 2 17 55974 0.0553 0.2694 -0.46878 2012 2 18 55975 0.0546 0.2703 -0.46986 2012 2 19 55976 0.0538 0.2712 -0.47102 2012 2 20 55977 0.0531 0.2720 -0.47229 2012 2 21 55978 0.0524 0.2729 -0.47368 2012 2 22 55979 0.0517 0.2738 -0.47513 2012 2 23 55980 0.0510 0.2747 -0.47662 2012 2 24 55981 0.0503 0.2756 -0.47807 2012 2 25 55982 0.0497 0.2765 -0.47945 2012 2 26 55983 0.0491 0.2775 -0.48072 2012 2 27 55984 0.0485 0.2784 -0.48187 2012 2 28 55985 0.0479 0.2794 -0.48289 2012 2 29 55986 0.0474 0.2803 -0.48382 2012 3 1 55987 0.0469 0.2813 -0.48468 2012 3 2 55988 0.0463 0.2823 -0.48553 2012 3 3 55989 0.0459 0.2832 -0.48642 2012 3 4 55990 0.0454 0.2842 -0.48742 2012 3 5 55991 0.0449 0.2852 -0.48859 2012 3 6 55992 0.0445 0.2862 -0.48997 2012 3 7 55993 0.0441 0.2872 -0.49157 2012 3 8 55994 0.0437 0.2882 -0.49336 2012 3 9 55995 0.0434 0.2893 -0.49524 2012 3 10 55996 0.0430 0.2903 -0.49711 2012 3 11 55997 0.0427 0.2913 -0.49885 2012 3 12 55998 0.0424 0.2923 -0.50039 2012 3 13 55999 0.0422 0.2934 -0.50173 2012 3 14 56000 0.0419 0.2944 -0.50291 2012 3 15 56001 0.0417 0.2955 -0.50401 2012 3 16 56002 0.0415 0.2965 -0.50510 2012 3 17 56003 0.0413 0.2975 -0.50626 2012 3 18 56004 0.0411 0.2986 -0.50751 2012 3 19 56005 0.0410 0.2996 -0.50887 2012 3 20 56006 0.0408 0.3007 -0.51031 2012 3 21 56007 0.0407 0.3017 -0.51182 2012 3 22 56008 0.0406 0.3028 -0.51333 2012 3 23 56009 0.0406 0.3039 -0.51481 2012 3 24 56010 0.0405 0.3049 -0.51620 2012 3 25 56011 0.0405 0.3060 -0.51749 2012 3 26 56012 0.0405 0.3070 -0.51867 2012 3 27 56013 0.0405 0.3081 -0.51975 2012 3 28 56014 0.0406 0.3091 -0.52077 2012 3 29 56015 0.0407 0.3102 -0.52175 2012 3 30 56016 0.0407 0.3112 -0.52276 2012 3 31 56017 0.0408 0.3123 -0.52385 2012 4 1 56018 0.0410 0.3133 -0.52507 2012 4 2 56019 0.0411 0.3143 -0.52647 2012 4 3 56020 0.0413 0.3154 -0.52807 2012 4 4 56021 0.0415 0.3164 -0.52988 2012 4 5 56022 0.0417 0.3174 -0.53182 2012 4 6 56023 0.0419 0.3185 -0.53381 2012 4 7 56024 0.0421 0.3195 -0.53572 2012 4 8 56025 0.0424 0.3205 -0.53747 2012 4 9 56026 0.0427 0.3215 -0.53900 2012 4 10 56027 0.0430 0.3225 -0.54035 2012 4 11 56028 0.0433 0.3235 -0.54157 2012 4 12 56029 0.0437 0.3245 -0.54276 2012 4 13 56030 0.0440 0.3255 -0.54399 2012 4 14 56031 0.0444 0.3265 -0.54529 2012 4 15 56032 0.0448 0.3274 -0.54668 2012 4 16 56033 0.0452 0.3284 -0.54813 2012 4 17 56034 0.0456 0.3294 -0.54962 2012 4 18 56035 0.0461 0.3303 -0.55110 2012 4 19 56036 0.0466 0.3313 -0.55253 2012 4 20 56037 0.0470 0.3322 -0.55387 2012 4 21 56038 0.0475 0.3331 -0.55508 2012 4 22 56039 0.0481 0.3340 -0.55617 2012 4 23 56040 0.0486 0.3349 -0.55714 2012 4 24 56041 0.0491 0.3358 -0.55802 2012 4 25 56042 0.0497 0.3367 -0.55885 2012 4 26 56043 0.0503 0.3376 -0.55966 2012 4 27 56044 0.0509 0.3385 -0.56052 2012 4 28 56045 0.0515 0.3393 -0.56146 2012 4 29 56046 0.0521 0.3402 -0.56253 2012 4 30 56047 0.0528 0.3410 -0.56378 2012 5 1 56048 0.0534 0.3418 -0.56521 2012 5 2 56049 0.0541 0.3426 -0.56680 2012 5 3 56050 0.0548 0.3434 -0.56847 2012 5 4 56051 0.0555 0.3442 -0.57012 2012 5 5 56052 0.0562 0.3450 -0.57166 2012 5 6 56053 0.0569 0.3458 -0.57302 2012 5 7 56054 0.0577 0.3465 -0.57418 2012 5 8 56055 0.0584 0.3473 -0.57519 2012 5 9 56056 0.0592 0.3480 -0.57612 2012 5 10 56057 0.0600 0.3487 -0.57707 2012 5 11 56058 0.0608 0.3494 -0.57807 2012 5 12 56059 0.0616 0.3501 -0.57915 2012 5 13 56060 0.0624 0.3508 -0.58029 2012 5 14 56061 0.0632 0.3514 -0.58146 2012 5 15 56062 0.0640 0.3521 -0.58260 2012 5 16 56063 0.0649 0.3527 -0.58367 2012 5 17 56064 0.0657 0.3533 -0.58465 2012 5 18 56065 0.0666 0.3540 -0.58550 2012 5 19 56066 0.0674 0.3545 -0.58621 2012 5 20 56067 0.0683 0.3551 -0.58679 2012 5 21 56068 0.0692 0.3557 -0.58726 2012 5 22 56069 0.0701 0.3562 -0.58765 2012 5 23 56070 0.0710 0.3568 -0.58802 2012 5 24 56071 0.0719 0.3573 -0.58840 2012 5 25 56072 0.0728 0.3578 -0.58884 2012 5 26 56073 0.0737 0.3583 -0.58939 2012 5 27 56074 0.0747 0.3587 -0.59008 2012 5 28 56075 0.0756 0.3592 -0.59092 2012 5 29 56076 0.0765 0.3596 -0.59189 2012 5 30 56077 0.0775 0.3600 -0.59294 2012 5 31 56078 0.0784 0.3605 -0.59402 2012 6 1 56079 0.0794 0.3608 -0.59503 2012 6 2 56080 0.0803 0.3612 -0.59589 2012 6 3 56081 0.0813 0.3616 -0.59658 2012 6 4 56082 0.0823 0.3619 -0.59709 2012 6 5 56083 0.0832 0.3623 -0.59750 2012 6 6 56084 0.0842 0.3626 -0.59790 2012 6 7 56085 0.0852 0.3629 -0.59835 2012 6 8 56086 0.0861 0.3631 -0.59889 2012 6 9 56087 0.0871 0.3634 -0.59951 2012 6 10 56088 0.0881 0.3637 -0.60017 2012 6 11 56089 0.0891 0.3639 -0.60081 2012 6 12 56090 0.0901 0.3641 -0.60139 2012 6 13 56091 0.0910 0.3643 -0.60188 2012 6 14 56092 0.0920 0.3645 -0.60224 2012 6 15 56093 0.0930 0.3646 -0.60246 2012 6 16 56094 0.0940 0.3648 -0.60254 2012 6 17 56095 0.0949 0.3649 -0.60251 2012 6 18 56096 0.0959 0.3651 -0.60240 2012 6 19 56097 0.0969 0.3652 -0.60225 2012 6 20 56098 0.0979 0.3652 -0.60211 2012 6 21 56099 0.0988 0.3653 -0.60203 2012 6 22 56100 0.0998 0.3654 -0.60206 2012 6 23 56101 0.1008 0.3654 -0.60222 2012 6 24 56102 0.1017 0.3654 -0.60253 2012 6 25 56103 0.1027 0.3654 -0.60297 2012 6 26 56104 0.1036 0.3654 -0.60350 2012 6 27 56105 0.1046 0.3654 -0.60406 2012 6 28 56106 0.1055 0.3654 -0.60458 2012 6 29 56107 0.1065 0.3653 -0.60499 2012 6 30 56108 0.1074 0.3652 -0.60525 2012 7 1 56109 0.1083 0.3652 0.39463 2012 7 2 56110 0.1092 0.3651 0.39462 2012 7 3 56111 0.1102 0.3649 0.39463 2012 7 4 56112 0.1111 0.3648 0.39460 2012 7 5 56113 0.1120 0.3647 0.39446 2012 7 6 56114 0.1129 0.3645 0.39420 2012 7 7 56115 0.1138 0.3643 0.39387 2012 7 8 56116 0.1146 0.3641 0.39350 2012 7 9 56117 0.1155 0.3639 0.39318 2012 7 10 56118 0.1164 0.3637 0.39293 2012 7 11 56119 0.1172 0.3635 0.39281 2012 7 12 56120 0.1181 0.3632 0.39282 2012 7 13 56121 0.1189 0.3630 0.39296 2012 7 14 56122 0.1197 0.3627 0.39322 2012 7 15 56123 0.1205 0.3624 0.39357 2012 7 16 56124 0.1213 0.3621 0.39398 2012 7 17 56125 0.1221 0.3618 0.39438 2012 7 18 56126 0.1229 0.3615 0.39472 2012 7 19 56127 0.1237 0.3612 0.39497 2012 7 20 56128 0.1245 0.3608 0.39508 2012 7 21 56129 0.1252 0.3604 0.39504 2012 7 22 56130 0.1260 0.3601 0.39487 2012 7 23 56131 0.1267 0.3597 0.39461 2012 7 24 56132 0.1274 0.3593 0.39431 2012 7 25 56133 0.1281 0.3589 0.39407 2012 7 26 56134 0.1288 0.3585 0.39392 2012 7 27 56135 0.1295 0.3580 0.39392 2012 7 28 56136 0.1301 0.3576 0.39405 2012 7 29 56137 0.1308 0.3571 0.39427 2012 7 30 56138 0.1314 0.3567 0.39452 2012 7 31 56139 0.1321 0.3562 0.39470 2012 8 1 56140 0.1327 0.3557 0.39476 2012 8 2 56141 0.1333 0.3552 0.39464 2012 8 3 56142 0.1339 0.3547 0.39437 2012 8 4 56143 0.1344 0.3542 0.39399 2012 8 5 56144 0.1350 0.3537 0.39358 2012 8 6 56145 0.1355 0.3532 0.39319 2012 8 7 56146 0.1361 0.3527 0.39289 2012 8 8 56147 0.1366 0.3521 0.39269 2012 8 9 56148 0.1371 0.3516 0.39262 2012 8 10 56149 0.1375 0.3510 0.39267 2012 8 11 56150 0.1380 0.3504 0.39281 2012 8 12 56151 0.1385 0.3499 0.39302 2012 8 13 56152 0.1389 0.3493 0.39324 2012 8 14 56153 0.1393 0.3487 0.39341 2012 8 15 56154 0.1397 0.3481 0.39349 2012 8 16 56155 0.1401 0.3475 0.39342 2012 8 17 56156 0.1405 0.3469 0.39317 2012 8 18 56157 0.1409 0.3463 0.39274 2012 8 19 56158 0.1412 0.3457 0.39216 2012 8 20 56159 0.1415 0.3451 0.39150 2012 8 21 56160 0.1418 0.3444 0.39084 2012 8 22 56161 0.1421 0.3438 0.39026 2012 8 23 56162 0.1424 0.3432 0.38983 2012 8 24 56163 0.1427 0.3425 0.38954 2012 8 25 56164 0.1429 0.3419 0.38931 2012 8 26 56165 0.1431 0.3413 0.38907 2012 8 27 56166 0.1433 0.3406 0.38876 2012 8 28 56167 0.1435 0.3400 0.38835 2012 8 29 56168 0.1437 0.3393 0.38785 2012 8 30 56169 0.1439 0.3387 0.38725 2012 8 31 56170 0.1440 0.3380 0.38656 2012 9 1 56171 0.1442 0.3373 0.38579 2012 9 2 56172 0.1443 0.3367 0.38500 2012 9 3 56173 0.1444 0.3360 0.38425 2012 9 4 56174 0.1444 0.3354 0.38357 2012 9 5 56175 0.1445 0.3347 0.38300 2012 9 6 56176 0.1446 0.3340 0.38250 2012 9 7 56177 0.1446 0.3334 0.38205 2012 9 8 56178 0.1446 0.3327 0.38162 2012 9 9 56179 0.1446 0.3321 0.38120 2012 9 10 56180 0.1446 0.3314 0.38067 2012 9 11 56181 0.1445 0.3307 0.38005 2012 9 12 56182 0.1445 0.3301 0.37932 2012 9 13 56183 0.1444 0.3294 0.37838 2012 9 14 56184 0.1443 0.3288 0.37728 2012 9 15 56185 0.1442 0.3281 0.37600 2012 9 16 56186 0.1441 0.3275 0.37452 2012 9 17 56187 0.1440 0.3269 0.37293 2012 9 18 56188 0.1438 0.3262 0.37139 2012 9 19 56189 0.1437 0.3256 0.36992 2012 9 20 56190 0.1435 0.3249 0.36861 2012 9 21 56191 0.1433 0.3243 0.36748 2012 9 22 56192 0.1431 0.3237 0.36641 2012 9 23 56193 0.1429 0.3231 0.36531 2012 9 24 56194 0.1426 0.3225 0.36416 2012 9 25 56195 0.1424 0.3218 0.36293 2012 9 26 56196 0.1421 0.3212 0.36160 2012 9 27 56197 0.1418 0.3206 0.36019 2012 9 28 56198 0.1415 0.3201 0.35874 2012 9 29 56199 0.1412 0.3195 0.35732 2012 9 30 56200 0.1409 0.3189 0.35606 2012 10 1 56201 0.1406 0.3183 0.35492 2012 10 2 56202 0.1402 0.3177 0.35383 2012 10 3 56203 0.1398 0.3172 0.35286 2012 10 4 56204 0.1395 0.3166 0.35191 2012 10 5 56205 0.1391 0.3161 0.35099 2012 10 6 56206 0.1387 0.3156 0.35004 2012 10 7 56207 0.1383 0.3150 0.34896 2012 10 8 56208 0.1378 0.3145 0.34779 2012 10 9 56209 0.1374 0.3140 0.34648 2012 10 10 56210 0.1369 0.3135 0.34503 2012 10 11 56211 0.1365 0.3130 0.34342 2012 10 12 56212 0.1360 0.3125 0.34174 2012 10 13 56213 0.1355 0.3120 0.33998 2012 10 14 56214 0.1350 0.3116 0.33812 2012 10 15 56215 0.1345 0.3111 0.33622 2012 10 16 56216 0.1340 0.3107 0.33447 2012 10 17 56217 0.1334 0.3102 0.33289 2012 10 18 56218 0.1329 0.3098 0.33147 2012 10 19 56219 0.1323 0.3094 0.33018 2012 10 20 56220 0.1318 0.3090 0.32892 2012 10 21 56221 0.1312 0.3086 0.32767 2012 10 22 56222 0.1306 0.3082 0.32645 2012 10 23 56223 0.1300 0.3078 0.32515 2012 10 24 56224 0.1294 0.3074 0.32387 2012 10 25 56225 0.1288 0.3071 0.32259 2012 10 26 56226 0.1282 0.3068 0.32131 2012 10 27 56227 0.1276 0.3064 0.32007 2012 10 28 56228 0.1270 0.3061 0.31897 2012 10 29 56229 0.1263 0.3058 0.31796 2012 10 30 56230 0.1257 0.3055 0.31708 2012 10 31 56231 0.1250 0.3052 0.31632 2012 11 1 56232 0.1244 0.3050 0.31564 2012 11 2 56233 0.1237 0.3047 0.31505 2012 11 3 56234 0.1231 0.3045 0.31447 2012 11 4 56235 0.1224 0.3042 0.31381 2012 11 5 56236 0.1217 0.3040 0.31304 2012 11 6 56237 0.1210 0.3038 0.31218 2012 11 7 56238 0.1203 0.3036 0.31124 2012 11 8 56239 0.1196 0.3034 0.31018 2012 11 9 56240 0.1190 0.3033 0.30904 2012 11 10 56241 0.1183 0.3031 0.30781 2012 11 11 56242 0.1176 0.3030 0.30652 2012 11 12 56243 0.1168 0.3029 0.30518 2012 11 13 56244 0.1161 0.3027 0.30391 2012 11 14 56245 0.1154 0.3026 0.30276 2012 11 15 56246 0.1147 0.3026 0.30173 2012 11 16 56247 0.1140 0.3025 0.30079 2012 11 17 56248 0.1133 0.3024 0.29987 2012 11 18 56249 0.1126 0.3024 0.29884 2012 11 19 56250 0.1119 0.3024 0.29767 2012 11 20 56251 0.1112 0.3023 0.29638 2012 11 21 56252 0.1104 0.3023 0.29499 2012 11 22 56253 0.1097 0.3023 0.29356 2012 11 23 56254 0.1090 0.3024 0.29222 2012 11 24 56255 0.1083 0.3024 0.29097 2012 11 25 56256 0.1076 0.3024 0.28986 2012 11 26 56257 0.1069 0.3025 0.28885 2012 11 27 56258 0.1062 0.3026 0.28800 2012 11 28 56259 0.1055 0.3027 0.28733 2012 11 29 56260 0.1048 0.3028 0.28678 2012 11 30 56261 0.1041 0.3029 0.28625 2012 12 1 56262 0.1034 0.3030 0.28583 2012 12 2 56263 0.1027 0.3032 0.28539 2012 12 3 56264 0.1020 0.3033 0.28489 2012 12 4 56265 0.1013 0.3035 0.28427 2012 12 5 56266 0.1006 0.3037 0.28359 2012 12 6 56267 0.1000 0.3039 0.28283 2012 12 7 56268 0.0993 0.3041 0.28197 2012 12 8 56269 0.0986 0.3043 0.28100 2012 12 9 56270 0.0980 0.3045 0.27999 2012 12 10 56271 0.0973 0.3048 0.27903 2012 12 11 56272 0.0967 0.3051 0.27819 2012 12 12 56273 0.0960 0.3053 0.27747 2012 12 13 56274 0.0954 0.3056 0.27681 2012 12 14 56275 0.0948 0.3059 0.27605 2012 12 15 56276 0.0942 0.3062 0.27523 2012 12 16 56277 0.0935 0.3066 0.27431 2012 12 17 56278 0.0929 0.3069 0.27328 2012 12 18 56279 0.0924 0.3072 0.27223 2012 12 19 56280 0.0918 0.3076 0.27112 2012 12 20 56281 0.0912 0.3080 0.27006 2012 12 21 56282 0.0906 0.3083 0.26912 2012 12 22 56283 0.0901 0.3087 0.26834 2012 12 23 56284 0.0895 0.3091 0.26778 2012 12 24 56285 0.0890 0.3096 0.26737 2012 12 25 56286 0.0885 0.3100 0.26709 2012 12 26 56287 0.0880 0.3104 0.26695 2012 12 27 56288 0.0875 0.3109 0.26680 2012 12 28 56289 0.0870 0.3113 0.26661 2012 12 29 56290 0.0865 0.3118 0.26633 2012 12 30 56291 0.0860 0.3123 0.26592 2012 12 31 56292 0.0856 0.3128 0.26531 2013 1 1 56293 0.0851 0.3133 0.26456 2013 1 2 56294 0.0847 0.3138 0.26367 2013 1 3 56295 0.0843 0.3143 0.26274 2013 1 4 56296 0.0839 0.3148 0.26179 2013 1 5 56297 0.0835 0.3153 0.26081 2013 1 6 56298 0.0831 0.3159 0.25990 2013 1 7 56299 0.0827 0.3164 0.25911 2013 1 8 56300 0.0824 0.3170 0.25845 2013 1 9 56301 0.0821 0.3176 0.25789 2013 1 10 56302 0.0817 0.3181 0.25737 2013 1 11 56303 0.0814 0.3187 0.25681 2013 1 12 56304 0.0811 0.3193 0.25616 2013 1 13 56305 0.0809 0.3199 0.25539 2013 1 14 56306 0.0806 0.3205 0.25453 2013 1 15 56307 0.0804 0.3211 0.25361 2013 1 16 56308 0.0801 0.3217 0.25270 2013 1 17 56309 0.0799 0.3223 0.25186 2013 1 18 56310 0.0797 0.3230 0.25104 These predictions are based on all announced leap seconds. CELESTIAL POLE OFFSET SERIES: NEOS Celestial Pole Offset Series MJD dpsi error deps error (msec. of arc) 55924 -69.90 0.29 -7.25 0.13 55925 -70.09 0.29 -7.38 0.13 55926 -70.36 0.29 -7.45 0.13 55927 -70.55 0.11 -7.44 0.11 55928 -70.67 0.30 -7.37 0.06 55929 -70.73 0.30 -7.31 0.05 55930 -70.72 0.11 -7.32 0.05 55931 -70.64 0.11 -7.39 0.05 55932 -70.62 0.11 -7.45 0.05 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55924 0.384 0.115 -0.107 0.130 55925 0.397 0.115 -0.087 0.130 55926 0.394 0.115 -0.077 0.130 55927 0.390 0.044 -0.080 0.110 55928 0.382 0.119 -0.083 0.060 55929 0.379 0.119 -0.085 0.050 55930 0.375 0.044 -0.100 0.050 55931 0.374 0.044 -0.130 0.050 55932 0.363 0.044 -0.148 0.050 The recommended software to predict celestial pole offsets can be found at and software for the calculation of the dX and dY components with respect to IAU2000A Nutation/Precession Theory can be found at the web site in Chapter 5 Section 5.5 of the IERS Conventions (2010).