********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 16 February 2012 Vol. XXV No. 007 ______________________________________________________________________ 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 = -0.5 seconds beginning 09 Feb 2012 at 0000 UTC Beginning 1 January 2009: TAI-UTC = 34.000 000 seconds *********************************************************************** * This Bulletin replaces the previous one sent in the email earlier * * in the day on February 16, 2012. * * * * 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 2 10 55967 0.04224 .00010 0.25584 .00010 -0.457152 0.000014 12 2 11 55968 0.04134 .00010 0.25668 .00010 -0.458635 0.000016 12 2 12 55969 0.04031 .00010 0.25743 .00009 -0.460043 0.000016 12 2 13 55970 0.03885 .00010 0.25807 .00010 -0.461318 0.000014 12 2 14 55971 0.03716 .00009 0.25868 .00010 -0.462390 0.000015 12 2 15 55972 0.03569 .00010 0.25962 .00009 -0.463197 0.000014 12 2 16 55973 0.03434 .00010 0.26093 .00009 -0.463826 0.000055 _______________________________________________________________________ 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 = 0.0769 - 0.0977 cos A - 0.0798 sin A + 0.0543 cos C + 0.0034 sin C y = 0.3354 - 0.0776 cos A + 0.0837 sin A + 0.0034 cos C - 0.0543 sin C UT1-UTC = -0.4657 - 0.00088 (MJD - 55981) - (UT2-UT1) where A = 2*pi*(MJD-55973)/365.25 and C = 2*pi*(MJD-55973)/435. TAI-UTC(MJD 55974) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55973)**0.80 S t = 0.00025 (MJD-55973)**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 2 17 55974 0.0331 0.2622 -0.46437 2012 2 18 55975 0.0319 0.2635 -0.46493 2012 2 19 55976 0.0308 0.2648 -0.46558 2012 2 20 55977 0.0298 0.2660 -0.46631 2012 2 21 55978 0.0288 0.2672 -0.46711 2012 2 22 55979 0.0280 0.2684 -0.46794 2012 2 23 55980 0.0272 0.2696 -0.46875 2012 2 24 55981 0.0264 0.2709 -0.46953 2012 2 25 55982 0.0257 0.2721 -0.47025 2012 2 26 55983 0.0250 0.2734 -0.47093 2012 2 27 55984 0.0244 0.2746 -0.47158 2012 2 28 55985 0.0238 0.2759 -0.47217 2012 2 29 55986 0.0232 0.2772 -0.47273 2012 3 1 55987 0.0227 0.2785 -0.47330 2012 3 2 55988 0.0222 0.2797 -0.47391 2012 3 3 55989 0.0218 0.2810 -0.47461 2012 3 4 55990 0.0213 0.2823 -0.47544 2012 3 5 55991 0.0209 0.2837 -0.47645 2012 3 6 55992 0.0206 0.2850 -0.47768 2012 3 7 55993 0.0202 0.2863 -0.47913 2012 3 8 55994 0.0199 0.2876 -0.48076 2012 3 9 55995 0.0197 0.2889 -0.48250 2012 3 10 55996 0.0194 0.2903 -0.48424 2012 3 11 55997 0.0192 0.2916 -0.48587 2012 3 12 55998 0.0190 0.2930 -0.48734 2012 3 13 55999 0.0189 0.2943 -0.48862 2012 3 14 56000 0.0187 0.2956 -0.48977 2012 3 15 56001 0.0186 0.2970 -0.49087 2012 3 16 56002 0.0186 0.2983 -0.49199 2012 3 17 56003 0.0185 0.2997 -0.49321 2012 3 18 56004 0.0185 0.3010 -0.49454 2012 3 19 56005 0.0185 0.3024 -0.49601 2012 3 20 56006 0.0185 0.3037 -0.49758 2012 3 21 56007 0.0186 0.3050 -0.49922 2012 3 22 56008 0.0187 0.3064 -0.50089 2012 3 23 56009 0.0188 0.3077 -0.50252 2012 3 24 56010 0.0189 0.3090 -0.50409 2012 3 25 56011 0.0191 0.3104 -0.50555 2012 3 26 56012 0.0193 0.3117 -0.50691 2012 3 27 56013 0.0195 0.3130 -0.50815 2012 3 28 56014 0.0198 0.3143 -0.50931 2012 3 29 56015 0.0200 0.3156 -0.51044 2012 3 30 56016 0.0203 0.3169 -0.51158 2012 3 31 56017 0.0206 0.3182 -0.51280 2012 4 1 56018 0.0210 0.3195 -0.51413 2012 4 2 56019 0.0213 0.3208 -0.51564 2012 4 3 56020 0.0217 0.3221 -0.51735 2012 4 4 56021 0.0221 0.3234 -0.51924 2012 4 5 56022 0.0226 0.3246 -0.52127 2012 4 6 56023 0.0230 0.3259 -0.52334 2012 4 7 56024 0.0235 0.3271 -0.52533 2012 4 8 56025 0.0240 0.3284 -0.52714 2012 4 9 56026 0.0246 0.3296 -0.52874 2012 4 10 56027 0.0251 0.3308 -0.53014 2012 4 11 56028 0.0257 0.3320 -0.53141 2012 4 12 56029 0.0263 0.3332 -0.53264 2012 4 13 56030 0.0269 0.3344 -0.53390 2012 4 14 56031 0.0276 0.3356 -0.53523 2012 4 15 56032 0.0282 0.3367 -0.53665 2012 4 16 56033 0.0289 0.3379 -0.53813 2012 4 17 56034 0.0296 0.3390 -0.53964 2012 4 18 56035 0.0303 0.3402 -0.54114 2012 4 19 56036 0.0311 0.3413 -0.54259 2012 4 20 56037 0.0318 0.3424 -0.54395 2012 4 21 56038 0.0326 0.3435 -0.54520 2012 4 22 56039 0.0334 0.3445 -0.54631 2012 4 23 56040 0.0343 0.3456 -0.54730 2012 4 24 56041 0.0351 0.3466 -0.54818 2012 4 25 56042 0.0360 0.3477 -0.54901 2012 4 26 56043 0.0368 0.3487 -0.54981 2012 4 27 56044 0.0377 0.3497 -0.55064 2012 4 28 56045 0.0386 0.3507 -0.55155 2012 4 29 56046 0.0396 0.3516 -0.55260 2012 4 30 56047 0.0405 0.3526 -0.55380 2012 5 1 56048 0.0415 0.3535 -0.55518 2012 5 2 56049 0.0425 0.3545 -0.55672 2012 5 3 56050 0.0434 0.3554 -0.55835 2012 5 4 56051 0.0444 0.3562 -0.55997 2012 5 5 56052 0.0455 0.3571 -0.56149 2012 5 6 56053 0.0465 0.3580 -0.56282 2012 5 7 56054 0.0476 0.3588 -0.56396 2012 5 8 56055 0.0486 0.3596 -0.56495 2012 5 9 56056 0.0497 0.3604 -0.56586 2012 5 10 56057 0.0508 0.3612 -0.56679 2012 5 11 56058 0.0519 0.3620 -0.56778 2012 5 12 56059 0.0530 0.3627 -0.56886 2012 5 13 56060 0.0541 0.3634 -0.56999 2012 5 14 56061 0.0553 0.3641 -0.57115 2012 5 15 56062 0.0564 0.3648 -0.57228 2012 5 16 56063 0.0576 0.3655 -0.57335 2012 5 17 56064 0.0587 0.3661 -0.57432 2012 5 18 56065 0.0599 0.3668 -0.57516 2012 5 19 56066 0.0611 0.3674 -0.57586 2012 5 20 56067 0.0623 0.3680 -0.57642 2012 5 21 56068 0.0635 0.3685 -0.57688 2012 5 22 56069 0.0647 0.3691 -0.57726 2012 5 23 56070 0.0659 0.3696 -0.57760 2012 5 24 56071 0.0671 0.3701 -0.57797 2012 5 25 56072 0.0683 0.3706 -0.57840 2012 5 26 56073 0.0696 0.3711 -0.57894 2012 5 27 56074 0.0708 0.3715 -0.57961 2012 5 28 56075 0.0721 0.3720 -0.58044 2012 5 29 56076 0.0733 0.3724 -0.58139 2012 5 30 56077 0.0746 0.3728 -0.58244 2012 5 31 56078 0.0758 0.3731 -0.58350 2012 6 1 56079 0.0771 0.3735 -0.58449 2012 6 2 56080 0.0783 0.3738 -0.58534 2012 6 3 56081 0.0796 0.3741 -0.58601 2012 6 4 56082 0.0809 0.3744 -0.58651 2012 6 5 56083 0.0821 0.3746 -0.58691 2012 6 6 56084 0.0834 0.3749 -0.58730 2012 6 7 56085 0.0847 0.3751 -0.58774 2012 6 8 56086 0.0860 0.3753 -0.58828 2012 6 9 56087 0.0872 0.3755 -0.58890 2012 6 10 56088 0.0885 0.3756 -0.58956 2012 6 11 56089 0.0898 0.3758 -0.59020 2012 6 12 56090 0.0910 0.3759 -0.59078 2012 6 13 56091 0.0923 0.3760 -0.59126 2012 6 14 56092 0.0936 0.3760 -0.59162 2012 6 15 56093 0.0948 0.3761 -0.59184 2012 6 16 56094 0.0961 0.3761 -0.59192 2012 6 17 56095 0.0973 0.3761 -0.59189 2012 6 18 56096 0.0986 0.3761 -0.59177 2012 6 19 56097 0.0998 0.3761 -0.59162 2012 6 20 56098 0.1011 0.3760 -0.59148 2012 6 21 56099 0.1023 0.3760 -0.59140 2012 6 22 56100 0.1035 0.3759 -0.59143 2012 6 23 56101 0.1048 0.3758 -0.59159 2012 6 24 56102 0.1060 0.3756 -0.59190 2012 6 25 56103 0.1072 0.3755 -0.59234 2012 6 26 56104 0.1084 0.3753 -0.59287 2012 6 27 56105 0.1096 0.3751 -0.59343 2012 6 28 56106 0.1108 0.3749 -0.59394 2012 6 29 56107 0.1119 0.3747 -0.59435 2012 6 30 56108 0.1131 0.3744 -0.59461 2012 7 1 56109 0.1143 0.3742 0.40528 2012 7 2 56110 0.1154 0.3739 0.40527 2012 7 3 56111 0.1166 0.3736 0.40530 2012 7 4 56112 0.1177 0.3732 0.40528 2012 7 5 56113 0.1188 0.3729 0.40515 2012 7 6 56114 0.1199 0.3725 0.40491 2012 7 7 56115 0.1210 0.3722 0.40459 2012 7 8 56116 0.1221 0.3718 0.40425 2012 7 9 56117 0.1232 0.3713 0.40394 2012 7 10 56118 0.1242 0.3709 0.40371 2012 7 11 56119 0.1253 0.3705 0.40360 2012 7 12 56120 0.1263 0.3700 0.40362 2012 7 13 56121 0.1273 0.3695 0.40378 2012 7 14 56122 0.1284 0.3690 0.40405 2012 7 15 56123 0.1293 0.3685 0.40441 2012 7 16 56124 0.1303 0.3680 0.40481 2012 7 17 56125 0.1313 0.3674 0.40520 2012 7 18 56126 0.1322 0.3669 0.40553 2012 7 19 56127 0.1332 0.3663 0.40574 2012 7 20 56128 0.1341 0.3657 0.40581 2012 7 21 56129 0.1350 0.3651 0.40571 2012 7 22 56130 0.1359 0.3645 0.40547 2012 7 23 56131 0.1368 0.3638 0.40511 2012 7 24 56132 0.1376 0.3632 0.40471 2012 7 25 56133 0.1384 0.3625 0.40434 2012 7 26 56134 0.1393 0.3619 0.40406 2012 7 27 56135 0.1401 0.3612 0.40392 2012 7 28 56136 0.1409 0.3605 0.40391 2012 7 29 56137 0.1416 0.3598 0.40400 2012 7 30 56138 0.1424 0.3590 0.40413 2012 7 31 56139 0.1431 0.3583 0.40422 2012 8 1 56140 0.1438 0.3576 0.40421 2012 8 2 56141 0.1445 0.3568 0.40406 2012 8 3 56142 0.1452 0.3560 0.40378 2012 8 4 56143 0.1458 0.3552 0.40343 2012 8 5 56144 0.1465 0.3544 0.40305 2012 8 6 56145 0.1471 0.3536 0.40273 2012 8 7 56146 0.1477 0.3528 0.40249 2012 8 8 56147 0.1483 0.3520 0.40237 2012 8 9 56148 0.1488 0.3512 0.40238 2012 8 10 56149 0.1494 0.3504 0.40250 2012 8 11 56150 0.1499 0.3495 0.40270 2012 8 12 56151 0.1504 0.3487 0.40296 2012 8 13 56152 0.1509 0.3478 0.40321 2012 8 14 56153 0.1513 0.3469 0.40340 2012 8 15 56154 0.1518 0.3460 0.40349 2012 8 16 56155 0.1522 0.3452 0.40343 2012 8 17 56156 0.1526 0.3443 0.40319 2012 8 18 56157 0.1529 0.3434 0.40278 2012 8 19 56158 0.1533 0.3425 0.40223 2012 8 20 56159 0.1536 0.3416 0.40159 2012 8 21 56160 0.1539 0.3407 0.40097 2012 8 22 56161 0.1542 0.3398 0.40042 2012 8 23 56162 0.1545 0.3388 0.40000 2012 8 24 56163 0.1547 0.3379 0.39970 2012 8 25 56164 0.1549 0.3370 0.39951 2012 8 26 56165 0.1551 0.3361 0.39934 2012 8 27 56166 0.1553 0.3351 0.39914 2012 8 28 56167 0.1555 0.3342 0.39884 2012 8 29 56168 0.1556 0.3333 0.39842 2012 8 30 56169 0.1557 0.3323 0.39786 2012 8 31 56170 0.1558 0.3314 0.39721 2012 9 1 56171 0.1559 0.3305 0.39651 2012 9 2 56172 0.1560 0.3295 0.39582 2012 9 3 56173 0.1560 0.3286 0.39519 2012 9 4 56174 0.1560 0.3276 0.39465 2012 9 5 56175 0.1560 0.3267 0.39422 2012 9 6 56176 0.1560 0.3258 0.39390 2012 9 7 56177 0.1559 0.3248 0.39367 2012 9 8 56178 0.1558 0.3239 0.39348 2012 9 9 56179 0.1557 0.3230 0.39330 2012 9 10 56180 0.1556 0.3220 0.39306 2012 9 11 56181 0.1555 0.3211 0.39270 2012 9 12 56182 0.1553 0.3202 0.39216 2012 9 13 56183 0.1551 0.3193 0.39141 2012 9 14 56184 0.1549 0.3184 0.39044 2012 9 15 56185 0.1547 0.3174 0.38927 2012 9 16 56186 0.1545 0.3165 0.38797 2012 9 17 56187 0.1542 0.3156 0.38665 2012 9 18 56188 0.1539 0.3147 0.38540 2012 9 19 56189 0.1536 0.3138 0.38431 2012 9 20 56190 0.1533 0.3130 0.38341 2012 9 21 56191 0.1529 0.3121 0.38264 2012 9 22 56192 0.1526 0.3112 0.38193 2012 9 23 56193 0.1522 0.3103 0.38117 2012 9 24 56194 0.1518 0.3095 0.38028 2012 9 25 56195 0.1514 0.3086 0.37923 2012 9 26 56196 0.1509 0.3078 0.37802 2012 9 27 56197 0.1505 0.3070 0.37672 2012 9 28 56198 0.1500 0.3061 0.37538 2012 9 29 56199 0.1495 0.3053 0.37405 2012 9 30 56200 0.1490 0.3045 0.37281 2012 10 1 56201 0.1485 0.3037 0.37157 2012 10 2 56202 0.1479 0.3029 0.37054 2012 10 3 56203 0.1474 0.3021 0.36964 2012 10 4 56204 0.1468 0.3014 0.36890 2012 10 5 56205 0.1462 0.3006 0.36824 2012 10 6 56206 0.1456 0.2998 0.36758 2012 10 7 56207 0.1449 0.2991 0.36690 2012 10 8 56208 0.1443 0.2984 0.36615 2012 10 9 56209 0.1436 0.2977 0.36530 2012 10 10 56210 0.1430 0.2970 0.36432 2012 10 11 56211 0.1423 0.2963 0.36318 2012 10 12 56212 0.1416 0.2956 0.36183 2012 10 13 56213 0.1408 0.2949 0.36036 2012 10 14 56214 0.1401 0.2943 0.35876 2012 10 15 56215 0.1394 0.2936 0.35715 2012 10 16 56216 0.1386 0.2930 0.35560 2012 10 17 56217 0.1378 0.2924 0.35424 2012 10 18 56218 0.1370 0.2918 0.35312 2012 10 19 56219 0.1362 0.2912 0.35205 2012 10 20 56220 0.1354 0.2906 0.35098 2012 10 21 56221 0.1346 0.2901 0.34982 2012 10 22 56222 0.1338 0.2895 0.34852 2012 10 23 56223 0.1329 0.2890 0.34713 2012 10 24 56224 0.1320 0.2885 0.34569 2012 10 25 56225 0.1312 0.2880 0.34424 2012 10 26 56226 0.1303 0.2875 0.34280 2012 10 27 56227 0.1294 0.2871 0.34138 2012 10 28 56228 0.1285 0.2866 0.34003 2012 10 29 56229 0.1276 0.2862 0.33875 2012 10 30 56230 0.1267 0.2858 0.33759 2012 10 31 56231 0.1258 0.2854 0.33652 2012 11 1 56232 0.1248 0.2850 0.33552 2012 11 2 56233 0.1239 0.2846 0.33454 2012 11 3 56234 0.1229 0.2843 0.33352 2012 11 4 56235 0.1220 0.2839 0.33247 2012 11 5 56236 0.1210 0.2836 0.33126 2012 11 6 56237 0.1200 0.2833 0.32995 2012 11 7 56238 0.1191 0.2830 0.32856 2012 11 8 56239 0.1181 0.2828 0.32696 2012 11 9 56240 0.1171 0.2825 0.32524 2012 11 10 56241 0.1161 0.2823 0.32343 2012 11 11 56242 0.1151 0.2821 0.32149 2012 11 12 56243 0.1141 0.2819 0.31953 2012 11 13 56244 0.1131 0.2817 0.31768 2012 11 14 56245 0.1121 0.2815 0.31596 2012 11 15 56246 0.1111 0.2814 0.31436 2012 11 16 56247 0.1101 0.2813 0.31290 2012 11 17 56248 0.1091 0.2812 0.31141 2012 11 18 56249 0.1081 0.2811 0.30984 2012 11 19 56250 0.1070 0.2810 0.30818 2012 11 20 56251 0.1060 0.2809 0.30649 2012 11 21 56252 0.1050 0.2809 0.30476 2012 11 22 56253 0.1040 0.2809 0.30307 2012 11 23 56254 0.1030 0.2809 0.30148 2012 11 24 56255 0.1020 0.2809 0.30001 2012 11 25 56256 0.1010 0.2809 0.29880 2012 11 26 56257 0.0999 0.2810 0.29774 2012 11 27 56258 0.0989 0.2811 0.29676 2012 11 28 56259 0.0979 0.2812 0.29589 2012 11 29 56260 0.0969 0.2813 0.29499 2012 11 30 56261 0.0959 0.2814 0.29410 2012 12 1 56262 0.0949 0.2815 0.29314 2012 12 2 56263 0.0939 0.2817 0.29198 2012 12 3 56264 0.0930 0.2819 0.29071 2012 12 4 56265 0.0920 0.2821 0.28930 2012 12 5 56266 0.0910 0.2823 0.28778 2012 12 6 56267 0.0900 0.2825 0.28614 2012 12 7 56268 0.0891 0.2828 0.28451 2012 12 8 56269 0.0881 0.2831 0.28289 2012 12 9 56270 0.0871 0.2833 0.28129 2012 12 10 56271 0.0862 0.2837 0.27971 2012 12 11 56272 0.0853 0.2840 0.27832 2012 12 12 56273 0.0843 0.2843 0.27707 2012 12 13 56274 0.0834 0.2847 0.27592 2012 12 14 56275 0.0825 0.2850 0.27481 2012 12 15 56276 0.0816 0.2854 0.27365 2012 12 16 56277 0.0807 0.2858 0.27240 2012 12 17 56278 0.0798 0.2862 0.27117 2012 12 18 56279 0.0790 0.2867 0.26990 2012 12 19 56280 0.0781 0.2871 0.26874 2012 12 20 56281 0.0772 0.2876 0.26767 2012 12 21 56282 0.0764 0.2881 0.26672 2012 12 22 56283 0.0756 0.2886 0.26588 2012 12 23 56284 0.0748 0.2891 0.26525 2012 12 24 56285 0.0740 0.2896 0.26473 2012 12 25 56286 0.0732 0.2902 0.26432 2012 12 26 56287 0.0724 0.2907 0.26400 2012 12 27 56288 0.0716 0.2913 0.26372 2012 12 28 56289 0.0709 0.2919 0.26345 2012 12 29 56290 0.0701 0.2925 0.26313 2012 12 30 56291 0.0694 0.2931 0.26267 2012 12 31 56292 0.0687 0.2937 0.26208 2013 1 1 56293 0.0680 0.2944 0.26137 2013 1 2 56294 0.0673 0.2950 0.26061 2013 1 3 56295 0.0667 0.2957 0.25978 2013 1 4 56296 0.0660 0.2964 0.25896 2013 1 5 56297 0.0654 0.2971 0.25816 2013 1 6 56298 0.0648 0.2978 0.25739 2013 1 7 56299 0.0642 0.2985 0.25661 2013 1 8 56300 0.0636 0.2992 0.25592 2013 1 9 56301 0.0630 0.3000 0.25527 2013 1 10 56302 0.0625 0.3007 0.25465 2013 1 11 56303 0.0620 0.3015 0.25399 2013 1 12 56304 0.0615 0.3022 0.25325 2013 1 13 56305 0.0610 0.3030 0.25230 2013 1 14 56306 0.0605 0.3038 0.25121 2013 1 15 56307 0.0600 0.3046 0.25002 2013 1 16 56308 0.0596 0.3054 0.24878 2013 1 17 56309 0.0592 0.3062 0.24758 2013 1 18 56310 0.0588 0.3071 0.24654 2013 1 19 56311 0.0584 0.3079 0.24562 2013 1 20 56312 0.0580 0.3087 0.24487 2013 1 21 56313 0.0577 0.3096 0.24421 2013 1 22 56314 0.0574 0.3105 0.24367 2013 1 23 56315 0.0571 0.3113 0.24324 2013 1 24 56316 0.0568 0.3122 0.24288 2013 1 25 56317 0.0566 0.3131 0.24244 2013 1 26 56318 0.0563 0.3140 0.24205 2013 1 27 56319 0.0561 0.3149 0.24156 2013 1 28 56320 0.0559 0.3157 0.24097 2013 1 29 56321 0.0557 0.3166 0.24024 2013 1 30 56322 0.0556 0.3176 0.23946 2013 1 31 56323 0.0554 0.3185 0.23866 2013 2 1 56324 0.0553 0.3194 0.23785 2013 2 2 56325 0.0552 0.3203 0.23704 2013 2 3 56326 0.0552 0.3212 0.23625 2013 2 4 56327 0.0551 0.3221 0.23555 2013 2 5 56328 0.0551 0.3231 0.23495 2013 2 6 56329 0.0551 0.3240 0.23438 2013 2 7 56330 0.0551 0.3249 0.23376 2013 2 8 56331 0.0552 0.3259 0.23290 2013 2 9 56332 0.0552 0.3268 0.23191 2013 2 10 56333 0.0553 0.3277 0.23076 2013 2 11 56334 0.0554 0.3287 0.22951 2013 2 12 56335 0.0556 0.3296 0.22825 2013 2 13 56336 0.0557 0.3305 0.22697 2013 2 14 56337 0.0559 0.3315 0.22578 2013 2 15 56338 0.0561 0.3324 0.22475 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) 55954 -70.98 0.31 -7.78 0.02 55955 -71.19 0.15 -7.87 0.04 55956 -71.29 0.15 -7.87 0.04 55957 -71.22 0.30 -7.91 0.05 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55954 0.251 0.123 -0.265 0.020 55955 0.256 0.060 -0.271 0.040 55956 0.269 0.060 -0.260 0.040 55957 0.298 0.119 -0.245 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).