********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 22 December 2011 Vol. XXIV No. 051 ______________________________________________________________________ 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 Beginning 1 January 2009: TAI-UTC = 34.000 000 seconds ________________________________________________________________________ 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 11 12 16 55911 0.14715 .00009 0.27494 .00009 -0.399394 0.000012 11 12 17 55912 0.14577 .00009 0.27473 .00009 -0.400779 0.000012 11 12 18 55913 0.14438 .00010 0.27465 .00009 -0.402226 0.000013 11 12 19 55914 0.14264 .00010 0.27431 .00010 -0.403718 0.000013 11 12 20 55915 0.14042 .00009 0.27332 .00009 -0.405138 0.000012 11 12 21 55916 0.13809 .00009 0.27202 .00009 -0.406368 0.000013 11 12 22 55917 0.13580 .00009 0.27082 .00009 -0.407359 0.000008 _______________________________________________________________________ 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 = 0.0893 + 0.0047 cos A - 0.1209 sin A + 0.0429 cos C + 0.0415 sin C y = 0.3371 - 0.1102 cos A - 0.0091 sin A + 0.0415 cos C - 0.0429 sin C UT1-UTC = -0.4223 - 0.00085 (MJD - 55925) - (UT2-UT1) where A = 2*pi*(MJD-55917)/365.25 and C = 2*pi*(MJD-55917)/435. TAI-UTC(MJD 55918) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55917)**0.80 S t = 0.00025 (MJD-55917)**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) 2011 12 23 55918 0.1339 0.2697 -0.40818 2011 12 24 55919 0.1321 0.2689 -0.40893 2011 12 25 55920 0.1305 0.2683 -0.40972 2011 12 26 55921 0.1290 0.2678 -0.41064 2011 12 27 55922 0.1275 0.2675 -0.41173 2011 12 28 55923 0.1260 0.2671 -0.41297 2011 12 29 55924 0.1246 0.2667 -0.41430 2011 12 30 55925 0.1233 0.2664 -0.41566 2011 12 31 55926 0.1219 0.2662 -0.41699 2012 1 1 55927 0.1206 0.2660 -0.41823 2012 1 2 55928 0.1193 0.2659 -0.41931 2012 1 3 55929 0.1180 0.2658 -0.42021 2012 1 4 55930 0.1168 0.2658 -0.42097 2012 1 5 55931 0.1155 0.2657 -0.42163 2012 1 6 55932 0.1143 0.2657 -0.42220 2012 1 7 55933 0.1130 0.2657 -0.42273 2012 1 8 55934 0.1118 0.2657 -0.42328 2012 1 9 55935 0.1106 0.2657 -0.42390 2012 1 10 55936 0.1094 0.2658 -0.42465 2012 1 11 55937 0.1082 0.2659 -0.42555 2012 1 12 55938 0.1071 0.2660 -0.42663 2012 1 13 55939 0.1059 0.2661 -0.42784 2012 1 14 55940 0.1047 0.2662 -0.42913 2012 1 15 55941 0.1036 0.2664 -0.43041 2012 1 16 55942 0.1024 0.2665 -0.43159 2012 1 17 55943 0.1013 0.2667 -0.43261 2012 1 18 55944 0.1002 0.2669 -0.43345 2012 1 19 55945 0.0990 0.2671 -0.43414 2012 1 20 55946 0.0979 0.2674 -0.43474 2012 1 21 55947 0.0968 0.2676 -0.43531 2012 1 22 55948 0.0957 0.2679 -0.43594 2012 1 23 55949 0.0947 0.2682 -0.43668 2012 1 24 55950 0.0936 0.2685 -0.43756 2012 1 25 55951 0.0925 0.2688 -0.43854 2012 1 26 55952 0.0915 0.2692 -0.43961 2012 1 27 55953 0.0905 0.2695 -0.44068 2012 1 28 55954 0.0894 0.2699 -0.44172 2012 1 29 55955 0.0884 0.2703 -0.44267 2012 1 30 55956 0.0874 0.2707 -0.44351 2012 1 31 55957 0.0864 0.2711 -0.44422 2012 2 1 55958 0.0855 0.2715 -0.44483 2012 2 2 55959 0.0845 0.2720 -0.44534 2012 2 3 55960 0.0835 0.2724 -0.44580 2012 2 4 55961 0.0826 0.2729 -0.44627 2012 2 5 55962 0.0817 0.2734 -0.44681 2012 2 6 55963 0.0808 0.2739 -0.44749 2012 2 7 55964 0.0799 0.2744 -0.44836 2012 2 8 55965 0.0790 0.2750 -0.44946 2012 2 9 55966 0.0781 0.2755 -0.45076 2012 2 10 55967 0.0773 0.2761 -0.45221 2012 2 11 55968 0.0764 0.2767 -0.45370 2012 2 12 55969 0.0756 0.2773 -0.45514 2012 2 13 55970 0.0748 0.2779 -0.45644 2012 2 14 55971 0.0740 0.2785 -0.45758 2012 2 15 55972 0.0733 0.2791 -0.45855 2012 2 16 55973 0.0725 0.2797 -0.45942 2012 2 17 55974 0.0718 0.2804 -0.46026 2012 2 18 55975 0.0710 0.2810 -0.46114 2012 2 19 55976 0.0703 0.2817 -0.46213 2012 2 20 55977 0.0696 0.2824 -0.46325 2012 2 21 55978 0.0689 0.2831 -0.46449 2012 2 22 55979 0.0683 0.2838 -0.46582 2012 2 23 55980 0.0676 0.2845 -0.46720 2012 2 24 55981 0.0670 0.2852 -0.46855 2012 2 25 55982 0.0664 0.2860 -0.46983 2012 2 26 55983 0.0658 0.2867 -0.47102 2012 2 27 55984 0.0653 0.2874 -0.47209 2012 2 28 55985 0.0647 0.2882 -0.47306 2012 2 29 55986 0.0642 0.2890 -0.47394 2012 3 1 55987 0.0636 0.2897 -0.47476 2012 3 2 55988 0.0631 0.2905 -0.47557 2012 3 3 55989 0.0627 0.2913 -0.47644 2012 3 4 55990 0.0622 0.2921 -0.47742 2012 3 5 55991 0.0617 0.2929 -0.47857 2012 3 6 55992 0.0613 0.2937 -0.47994 2012 3 7 55993 0.0609 0.2945 -0.48152 2012 3 8 55994 0.0605 0.2954 -0.48329 2012 3 9 55995 0.0601 0.2962 -0.48515 2012 3 10 55996 0.0598 0.2970 -0.48699 2012 3 11 55997 0.0595 0.2978 -0.48871 2012 3 12 55998 0.0591 0.2987 -0.49024 2012 3 13 55999 0.0588 0.2995 -0.49158 2012 3 14 56000 0.0586 0.3004 -0.49277 2012 3 15 56001 0.0583 0.3012 -0.49389 2012 3 16 56002 0.0581 0.3021 -0.49502 2012 3 17 56003 0.0578 0.3029 -0.49622 2012 3 18 56004 0.0576 0.3038 -0.49752 2012 3 19 56005 0.0575 0.3047 -0.49894 2012 3 20 56006 0.0573 0.3055 -0.50046 2012 3 21 56007 0.0571 0.3064 -0.50202 2012 3 22 56008 0.0570 0.3073 -0.50359 2012 3 23 56009 0.0569 0.3081 -0.50511 2012 3 24 56010 0.0568 0.3090 -0.50654 2012 3 25 56011 0.0567 0.3099 -0.50785 2012 3 26 56012 0.0567 0.3108 -0.50905 2012 3 27 56013 0.0566 0.3116 -0.51015 2012 3 28 56014 0.0566 0.3125 -0.51117 2012 3 29 56015 0.0566 0.3134 -0.51215 2012 3 30 56016 0.0566 0.3142 -0.51315 2012 3 31 56017 0.0567 0.3151 -0.51422 2012 4 1 56018 0.0567 0.3160 -0.51543 2012 4 2 56019 0.0568 0.3168 -0.51682 2012 4 3 56020 0.0569 0.3177 -0.51842 2012 4 4 56021 0.0570 0.3186 -0.52021 2012 4 5 56022 0.0571 0.3194 -0.52215 2012 4 6 56023 0.0573 0.3203 -0.52414 2012 4 7 56024 0.0574 0.3211 -0.52606 2012 4 8 56025 0.0576 0.3220 -0.52782 2012 4 9 56026 0.0578 0.3228 -0.52936 2012 4 10 56027 0.0580 0.3236 -0.53072 2012 4 11 56028 0.0583 0.3245 -0.53195 2012 4 12 56029 0.0585 0.3253 -0.53314 2012 4 13 56030 0.0588 0.3261 -0.53437 2012 4 14 56031 0.0591 0.3269 -0.53569 2012 4 15 56032 0.0593 0.3278 -0.53709 2012 4 16 56033 0.0597 0.3286 -0.53856 2012 4 17 56034 0.0600 0.3294 -0.54006 2012 4 18 56035 0.0603 0.3302 -0.54156 2012 4 19 56036 0.0607 0.3310 -0.54301 2012 4 20 56037 0.0611 0.3317 -0.54437 2012 4 21 56038 0.0615 0.3325 -0.54561 2012 4 22 56039 0.0619 0.3333 -0.54673 2012 4 23 56040 0.0623 0.3340 -0.54773 2012 4 24 56041 0.0627 0.3348 -0.54863 2012 4 25 56042 0.0632 0.3355 -0.54948 2012 4 26 56043 0.0636 0.3363 -0.55032 2012 4 27 56044 0.0641 0.3370 -0.55119 2012 4 28 56045 0.0646 0.3377 -0.55216 2012 4 29 56046 0.0651 0.3384 -0.55326 2012 4 30 56047 0.0656 0.3391 -0.55453 2012 5 1 56048 0.0661 0.3398 -0.55597 2012 5 2 56049 0.0667 0.3405 -0.55758 2012 5 3 56050 0.0672 0.3412 -0.55926 2012 5 4 56051 0.0678 0.3419 -0.56094 2012 5 5 56052 0.0684 0.3425 -0.56250 2012 5 6 56053 0.0689 0.3432 -0.56389 2012 5 7 56054 0.0695 0.3438 -0.56507 2012 5 8 56055 0.0702 0.3444 -0.56609 2012 5 9 56056 0.0708 0.3450 -0.56704 2012 5 10 56057 0.0714 0.3456 -0.56801 2012 5 11 56058 0.0721 0.3462 -0.56903 2012 5 12 56059 0.0727 0.3468 -0.57014 2012 5 13 56060 0.0734 0.3474 -0.57131 2012 5 14 56061 0.0740 0.3479 -0.57250 2012 5 15 56062 0.0747 0.3485 -0.57367 2012 5 16 56063 0.0754 0.3490 -0.57477 2012 5 17 56064 0.0761 0.3495 -0.57578 2012 5 18 56065 0.0768 0.3500 -0.57667 2012 5 19 56066 0.0775 0.3505 -0.57742 2012 5 20 56067 0.0782 0.3510 -0.57804 2012 5 21 56068 0.0790 0.3515 -0.57855 2012 5 22 56069 0.0797 0.3519 -0.57898 2012 5 23 56070 0.0804 0.3524 -0.57938 2012 5 24 56071 0.0812 0.3528 -0.57980 2012 5 25 56072 0.0820 0.3532 -0.58029 2012 5 26 56073 0.0827 0.3536 -0.58088 2012 5 27 56074 0.0835 0.3540 -0.58161 2012 5 28 56075 0.0842 0.3544 -0.58249 2012 5 29 56076 0.0850 0.3548 -0.58350 2012 5 30 56077 0.0858 0.3551 -0.58460 2012 5 31 56078 0.0866 0.3555 -0.58572 2012 6 1 56079 0.0874 0.3558 -0.58676 2012 6 2 56080 0.0882 0.3561 -0.58767 2012 6 3 56081 0.0890 0.3564 -0.58839 2012 6 4 56082 0.0898 0.3567 -0.58894 2012 6 5 56083 0.0906 0.3570 -0.58939 2012 6 6 56084 0.0914 0.3572 -0.58982 2012 6 7 56085 0.0922 0.3575 -0.59030 2012 6 8 56086 0.0930 0.3577 -0.59087 2012 6 9 56087 0.0938 0.3579 -0.59152 2012 6 10 56088 0.0946 0.3581 -0.59221 2012 6 11 56089 0.0954 0.3583 -0.59288 2012 6 12 56090 0.0962 0.3585 -0.59348 2012 6 13 56091 0.0970 0.3587 -0.59399 2012 6 14 56092 0.0978 0.3588 -0.59436 2012 6 15 56093 0.0987 0.3589 -0.59460 2012 6 16 56094 0.0995 0.3591 -0.59470 2012 6 17 56095 0.1003 0.3592 -0.59468 2012 6 18 56096 0.1011 0.3593 -0.59457 2012 6 19 56097 0.1019 0.3593 -0.59442 2012 6 20 56098 0.1027 0.3594 -0.59428 2012 6 21 56099 0.1035 0.3595 -0.59419 2012 6 22 56100 0.1043 0.3595 -0.59421 2012 6 23 56101 0.1051 0.3595 -0.59435 2012 6 24 56102 0.1059 0.3596 -0.59462 2012 6 25 56103 0.1067 0.3596 -0.59501 2012 6 26 56104 0.1075 0.3595 -0.59547 2012 6 27 56105 0.1082 0.3595 -0.59594 2012 6 28 56106 0.1090 0.3595 -0.59635 2012 6 29 56107 0.1098 0.3594 -0.59664 2012 6 30 56108 0.1106 0.3594 -0.59676 2012 7 1 56109 0.1113 0.3593 -0.59673 2012 7 2 56110 0.1121 0.3592 -0.59659 2012 7 3 56111 0.1128 0.3591 -0.59643 2012 7 4 56112 0.1136 0.3590 -0.59632 2012 7 5 56113 0.1143 0.3588 -0.59633 2012 7 6 56114 0.1150 0.3587 -0.59646 2012 7 7 56115 0.1158 0.3586 -0.59668 2012 7 8 56116 0.1165 0.3584 -0.59694 2012 7 9 56117 0.1172 0.3582 -0.59718 2012 7 10 56118 0.1179 0.3580 -0.59736 2012 7 11 56119 0.1186 0.3578 -0.59745 2012 7 12 56120 0.1193 0.3576 -0.59743 2012 7 13 56121 0.1200 0.3574 -0.59731 2012 7 14 56122 0.1206 0.3572 -0.59710 2012 7 15 56123 0.1213 0.3569 -0.59684 2012 7 16 56124 0.1219 0.3567 -0.59656 2012 7 17 56125 0.1226 0.3564 -0.59633 2012 7 18 56126 0.1232 0.3561 -0.59619 2012 7 19 56127 0.1238 0.3558 -0.59619 2012 7 20 56128 0.1244 0.3555 -0.59635 2012 7 21 56129 0.1250 0.3552 -0.59669 2012 7 22 56130 0.1256 0.3549 -0.59719 2012 7 23 56131 0.1262 0.3546 -0.59783 2012 7 24 56132 0.1268 0.3543 -0.59854 2012 7 25 56133 0.1274 0.3539 -0.59925 2012 7 26 56134 0.1279 0.3536 -0.59988 2012 7 27 56135 0.1284 0.3532 -0.60037 2012 7 28 56136 0.1290 0.3528 -0.60073 2012 7 29 56137 0.1295 0.3524 -0.60100 2012 7 30 56138 0.1300 0.3521 -0.60124 2012 7 31 56139 0.1305 0.3517 -0.60149 2012 8 1 56140 0.1309 0.3513 -0.60182 2012 8 2 56141 0.1314 0.3508 -0.60225 2012 8 3 56142 0.1319 0.3504 -0.60276 2012 8 4 56143 0.1323 0.3500 -0.60333 2012 8 5 56144 0.1327 0.3496 -0.60378 2012 8 6 56145 0.1331 0.3491 -0.60415 2012 8 7 56146 0.1335 0.3487 -0.60449 2012 8 8 56147 0.1339 0.3482 -0.60471 2012 8 9 56148 0.1343 0.3478 -0.60489 2012 8 10 56149 0.1347 0.3473 -0.60500 2012 8 11 56150 0.1350 0.3468 -0.60508 2012 8 12 56151 0.1353 0.3464 -0.60524 2012 8 13 56152 0.1357 0.3459 -0.60543 2012 8 14 56153 0.1360 0.3454 -0.60569 2012 8 15 56154 0.1363 0.3449 -0.60607 2012 8 16 56155 0.1365 0.3444 -0.60657 2012 8 17 56156 0.1368 0.3439 -0.60715 2012 8 18 56157 0.1370 0.3434 -0.60785 2012 8 19 56158 0.1373 0.3429 -0.60868 2012 8 20 56159 0.1375 0.3424 -0.60964 2012 8 21 56160 0.1377 0.3419 -0.61055 2012 8 22 56161 0.1379 0.3414 -0.61135 2012 8 23 56162 0.1381 0.3409 -0.61201 2012 8 24 56163 0.1382 0.3404 -0.61253 2012 8 25 56164 0.1384 0.3398 -0.61294 2012 8 26 56165 0.1385 0.3393 -0.61328 2012 8 27 56166 0.1386 0.3388 -0.61352 2012 8 28 56167 0.1387 0.3383 -0.61384 2012 8 29 56168 0.1388 0.3377 -0.61418 2012 8 30 56169 0.1389 0.3372 -0.61461 2012 8 31 56170 0.1390 0.3367 -0.61514 2012 9 1 56171 0.1390 0.3362 -0.61574 2012 9 2 56172 0.1390 0.3356 -0.61628 2012 9 3 56173 0.1390 0.3351 -0.61676 2012 9 4 56174 0.1390 0.3346 -0.61716 2012 9 5 56175 0.1390 0.3341 -0.61743 2012 9 6 56176 0.1390 0.3335 -0.61760 2012 9 7 56177 0.1390 0.3330 -0.61765 2012 9 8 56178 0.1389 0.3325 -0.61765 2012 9 9 56179 0.1388 0.3320 -0.61768 2012 9 10 56180 0.1387 0.3315 -0.61778 2012 9 11 56181 0.1386 0.3309 -0.61795 2012 9 12 56182 0.1385 0.3304 -0.61821 2012 9 13 56183 0.1384 0.3299 -0.61861 2012 9 14 56184 0.1383 0.3294 -0.61914 2012 9 15 56185 0.1381 0.3289 -0.61983 2012 9 16 56186 0.1379 0.3284 -0.62067 2012 9 17 56187 0.1377 0.3279 -0.62164 2012 9 18 56188 0.1375 0.3274 -0.62261 2012 9 19 56189 0.1373 0.3269 -0.62349 2012 9 20 56190 0.1371 0.3264 -0.62424 2012 9 21 56191 0.1369 0.3260 -0.62485 2012 9 22 56192 0.1366 0.3255 -0.62536 2012 9 23 56193 0.1364 0.3250 -0.62591 2012 9 24 56194 0.1361 0.3246 -0.62657 2012 9 25 56195 0.1358 0.3241 -0.62739 2012 9 26 56196 0.1355 0.3237 -0.62839 2012 9 27 56197 0.1352 0.3232 -0.62954 2012 9 28 56198 0.1349 0.3228 -0.63073 2012 9 29 56199 0.1345 0.3223 -0.63195 2012 9 30 56200 0.1342 0.3219 -0.63310 2012 10 1 56201 0.1338 0.3215 -0.63420 2012 10 2 56202 0.1334 0.3211 -0.63515 2012 10 3 56203 0.1330 0.3207 -0.63592 2012 10 4 56204 0.1327 0.3203 -0.63653 2012 10 5 56205 0.1322 0.3199 -0.63708 2012 10 6 56206 0.1318 0.3195 -0.63748 2012 10 7 56207 0.1314 0.3191 -0.63785 2012 10 8 56208 0.1310 0.3188 -0.63826 2012 10 9 56209 0.1305 0.3184 -0.63878 2012 10 10 56210 0.1301 0.3181 -0.63938 2012 10 11 56211 0.1296 0.3177 -0.64011 2012 10 12 56212 0.1291 0.3174 -0.64102 2012 10 13 56213 0.1286 0.3171 -0.64213 2012 10 14 56214 0.1281 0.3168 -0.64339 2012 10 15 56215 0.1276 0.3165 -0.64467 2012 10 16 56216 0.1271 0.3162 -0.64587 2012 10 17 56217 0.1266 0.3159 -0.64692 2012 10 18 56218 0.1260 0.3156 -0.64786 2012 10 19 56219 0.1255 0.3154 -0.64881 2012 10 20 56220 0.1250 0.3151 -0.64971 2012 10 21 56221 0.1244 0.3149 -0.65065 2012 10 22 56222 0.1238 0.3147 -0.65166 2012 10 23 56223 0.1233 0.3145 -0.65275 2012 10 24 56224 0.1227 0.3142 -0.65396 2012 10 25 56225 0.1221 0.3140 -0.65524 2012 10 26 56226 0.1215 0.3139 -0.65650 2012 10 27 56227 0.1209 0.3137 -0.65770 2012 10 28 56228 0.1204 0.3135 -0.65872 2012 10 29 56229 0.1197 0.3134 -0.65962 2012 10 30 56230 0.1191 0.3132 -0.66037 2012 10 31 56231 0.1185 0.3131 -0.66096 2012 11 1 56232 0.1179 0.3130 -0.66150 2012 11 2 56233 0.1173 0.3129 -0.66201 2012 11 3 56234 0.1167 0.3128 -0.66256 2012 11 4 56235 0.1160 0.3127 -0.66317 2012 11 5 56236 0.1154 0.3127 -0.66394 2012 11 6 56237 0.1148 0.3126 -0.66486 2012 11 7 56238 0.1141 0.3126 -0.66591 2012 11 8 56239 0.1135 0.3125 -0.66708 2012 11 9 56240 0.1129 0.3125 -0.66835 2012 11 10 56241 0.1122 0.3125 -0.66975 2012 11 11 56242 0.1116 0.3125 -0.67118 2012 11 12 56243 0.1109 0.3125 -0.67255 2012 11 13 56244 0.1103 0.3126 -0.67378 2012 11 14 56245 0.1096 0.3126 -0.67484 2012 11 15 56246 0.1090 0.3127 -0.67577 2012 11 16 56247 0.1083 0.3127 -0.67661 2012 11 17 56248 0.1077 0.3128 -0.67743 2012 11 18 56249 0.1070 0.3129 -0.67830 2012 11 19 56250 0.1064 0.3130 -0.67923 2012 11 20 56251 0.1058 0.3131 -0.68025 2012 11 21 56252 0.1051 0.3133 -0.68132 2012 11 22 56253 0.1045 0.3134 -0.68238 2012 11 23 56254 0.1038 0.3136 -0.68350 2012 11 24 56255 0.1032 0.3137 -0.68453 2012 11 25 56256 0.1026 0.3139 -0.68548 2012 11 26 56257 0.1019 0.3141 -0.68625 2012 11 27 56258 0.1013 0.3143 -0.68691 2012 11 28 56259 0.1007 0.3145 -0.68749 2012 11 29 56260 0.1001 0.3148 -0.68800 2012 11 30 56261 0.0995 0.3150 -0.68846 2012 12 1 56262 0.0988 0.3153 -0.68892 2012 12 2 56263 0.0982 0.3155 -0.68945 2012 12 3 56264 0.0976 0.3158 -0.69004 2012 12 4 56265 0.0971 0.3161 -0.69072 2012 12 5 56266 0.0965 0.3164 -0.69151 2012 12 6 56267 0.0959 0.3167 -0.69236 2012 12 7 56268 0.0953 0.3171 -0.69326 2012 12 8 56269 0.0947 0.3174 -0.69426 2012 12 9 56270 0.0942 0.3177 -0.69531 2012 12 10 56271 0.0936 0.3181 -0.69637 2012 12 11 56272 0.0931 0.3185 -0.69734 2012 12 12 56273 0.0925 0.3189 -0.69821 2012 12 13 56274 0.0920 0.3193 -0.69900 2012 12 14 56275 0.0915 0.3197 -0.69975 2012 12 15 56276 0.0910 0.3201 -0.70055 2012 12 16 56277 0.0905 0.3205 -0.70141 2012 12 17 56278 0.0900 0.3209 -0.70230 2012 12 18 56279 0.0895 0.3214 -0.70321 2012 12 19 56280 0.0890 0.3218 -0.70412 2012 12 20 56281 0.0886 0.3223 -0.70495 2012 12 21 56282 0.0881 0.3228 -0.70570 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) 55898 -71.70 0.30 -8.08 0.03 55899 -71.66 0.30 -8.01 0.03 55900 -71.58 0.30 -7.91 0.03 55901 -71.56 0.30 -7.80 0.03 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55898 0.263 0.119 0.109 0.030 55899 0.281 0.119 0.116 0.030 55900 0.306 0.119 0.119 0.030 55901 0.334 0.119 0.104 0.030 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).