********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 30 June 2011 Vol. XXIV No. 026 ______________________________________________________________________ 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 = -0.3 seconds beginning 12 May 2011 at 0000 UTC Beginning 1 January 2009: TAI-UTC(BIPM) = 34.000 000 seconds ********************************************************************** * As of Bulletin A Vol. XXIV, No. 025, on 23 June 2011, the dX and * * dY nutation error "floors" have been updated to reflect increased * * quality of VLBI data over the last few years. Reported dX and dY * * values in these files should now better reflect actual * * observational accuracies. * ********************************************************************** ________________________________________________________________________ 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 6 24 55736 0.03268 .00009 0.43011 .00009 -0.291524 0.000010 11 6 25 55737 0.03370 .00009 0.43084 .00009 -0.291677 0.000010 11 6 26 55738 0.03481 .00009 0.43151 .00009 -0.291723 0.000010 11 6 27 55739 0.03659 .00009 0.43222 .00009 -0.291706 0.000008 11 6 28 55740 0.03849 .00009 0.43302 .00009 -0.291610 0.000008 11 6 29 55741 0.04026 .00009 0.43382 .00009 -0.291420 0.000008 11 6 30 55742 0.04209 .00009 0.43468 .00010 -0.291170 0.000007 _______________________________________________________________________ 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 = 0.0870 + 0.0058 cos A + 0.1237 sin A - 0.0512 cos C - 0.0136 sin C y = 0.3324 + 0.1125 cos A - 0.0047 sin A - 0.0136 cos C + 0.0512 sin C UT1-UTC = -0.2871 - 0.00068 (MJD - 55750) - (UT2-UT1) where A = 2*pi*(MJD-55742)/365.25 and C = 2*pi*(MJD-55742)/435. TAI-UTC(MJD 55743) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55742)**0.80 S t = 0.00025 (MJD-55742)**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 7 1 55743 0.0438 0.4355 -0.29091 2011 7 2 55744 0.0455 0.4363 -0.29072 2011 7 3 55745 0.0472 0.4369 -0.29067 2011 7 4 55746 0.0488 0.4375 -0.29082 2011 7 5 55747 0.0505 0.4380 -0.29116 2011 7 6 55748 0.0522 0.4385 -0.29160 2011 7 7 55749 0.0539 0.4389 -0.29205 2011 7 8 55750 0.0556 0.4393 -0.29241 2011 7 9 55751 0.0572 0.4397 -0.29262 2011 7 10 55752 0.0589 0.4401 -0.29266 2011 7 11 55753 0.0606 0.4404 -0.29251 2011 7 12 55754 0.0622 0.4407 -0.29223 2011 7 13 55755 0.0639 0.4409 -0.29190 2011 7 14 55756 0.0655 0.4411 -0.29159 2011 7 15 55757 0.0672 0.4413 -0.29135 2011 7 16 55758 0.0688 0.4415 -0.29122 2011 7 17 55759 0.0705 0.4417 -0.29122 2011 7 18 55760 0.0721 0.4418 -0.29133 2011 7 19 55761 0.0738 0.4419 -0.29151 2011 7 20 55762 0.0754 0.4419 -0.29173 2011 7 21 55763 0.0770 0.4420 -0.29193 2011 7 22 55764 0.0787 0.4420 -0.29208 2011 7 23 55765 0.0803 0.4420 -0.29214 2011 7 24 55766 0.0819 0.4419 -0.29211 2011 7 25 55767 0.0835 0.4419 -0.29199 2011 7 26 55768 0.0851 0.4418 -0.29181 2011 7 27 55769 0.0867 0.4417 -0.29161 2011 7 28 55770 0.0883 0.4416 -0.29145 2011 7 29 55771 0.0899 0.4414 -0.29139 2011 7 30 55772 0.0914 0.4412 -0.29151 2011 7 31 55773 0.0930 0.4410 -0.29184 2011 8 1 55774 0.0946 0.4408 -0.29239 2011 8 2 55775 0.0961 0.4406 -0.29313 2011 8 3 55776 0.0977 0.4403 -0.29397 2011 8 4 55777 0.0992 0.4400 -0.29478 2011 8 5 55778 0.1007 0.4397 -0.29547 2011 8 6 55779 0.1022 0.4393 -0.29596 2011 8 7 55780 0.1037 0.4390 -0.29624 2011 8 8 55781 0.1052 0.4386 -0.29634 2011 8 9 55782 0.1067 0.4382 -0.29636 2011 8 10 55783 0.1081 0.4377 -0.29636 2011 8 11 55784 0.1096 0.4373 -0.29640 2011 8 12 55785 0.1110 0.4368 -0.29654 2011 8 13 55786 0.1124 0.4363 -0.29679 2011 8 14 55787 0.1138 0.4358 -0.29715 2011 8 15 55788 0.1152 0.4353 -0.29757 2011 8 16 55789 0.1166 0.4347 -0.29802 2011 8 17 55790 0.1180 0.4342 -0.29845 2011 8 18 55791 0.1193 0.4336 -0.29881 2011 8 19 55792 0.1207 0.4329 -0.29908 2011 8 20 55793 0.1220 0.4323 -0.29922 2011 8 21 55794 0.1233 0.4317 -0.29925 2011 8 22 55795 0.1246 0.4310 -0.29920 2011 8 23 55796 0.1259 0.4303 -0.29909 2011 8 24 55797 0.1271 0.4296 -0.29899 2011 8 25 55798 0.1283 0.4289 -0.29896 2011 8 26 55799 0.1296 0.4281 -0.29910 2011 8 27 55800 0.1308 0.4274 -0.29947 2011 8 28 55801 0.1320 0.4266 -0.30009 2011 8 29 55802 0.1331 0.4258 -0.30095 2011 8 30 55803 0.1343 0.4250 -0.30196 2011 8 31 55804 0.1354 0.4241 -0.30301 2011 9 1 55805 0.1365 0.4233 -0.30394 2011 9 2 55806 0.1376 0.4224 -0.30467 2011 9 3 55807 0.1387 0.4216 -0.30517 2011 9 4 55808 0.1398 0.4207 -0.30546 2011 9 5 55809 0.1408 0.4198 -0.30562 2011 9 6 55810 0.1418 0.4189 -0.30575 2011 9 7 55811 0.1428 0.4179 -0.30592 2011 9 8 55812 0.1438 0.4170 -0.30620 2011 9 9 55813 0.1448 0.4160 -0.30660 2011 9 10 55814 0.1457 0.4150 -0.30712 2011 9 11 55815 0.1466 0.4141 -0.30773 2011 9 12 55816 0.1475 0.4131 -0.30841 2011 9 13 55817 0.1484 0.4120 -0.30909 2011 9 14 55818 0.1493 0.4110 -0.30973 2011 9 15 55819 0.1501 0.4100 -0.31031 2011 9 16 55820 0.1509 0.4089 -0.31079 2011 9 17 55821 0.1517 0.4079 -0.31118 2011 9 18 55822 0.1525 0.4068 -0.31147 2011 9 19 55823 0.1533 0.4057 -0.31172 2011 9 20 55824 0.1540 0.4047 -0.31195 2011 9 21 55825 0.1547 0.4036 -0.31222 2011 9 22 55826 0.1554 0.4025 -0.31262 2011 9 23 55827 0.1560 0.4013 -0.31321 2011 9 24 55828 0.1567 0.4002 -0.31403 2011 9 25 55829 0.1573 0.3991 -0.31511 2011 9 26 55830 0.1579 0.3980 -0.31641 2011 9 27 55831 0.1585 0.3968 -0.31782 2011 9 28 55832 0.1590 0.3957 -0.31921 2011 9 29 55833 0.1596 0.3945 -0.32046 2011 9 30 55834 0.1601 0.3933 -0.32148 2011 10 1 55835 0.1606 0.3922 -0.32228 2011 10 2 55836 0.1610 0.3910 -0.32290 2011 10 3 55837 0.1615 0.3898 -0.32345 2011 10 4 55838 0.1619 0.3886 -0.32402 2011 10 5 55839 0.1623 0.3874 -0.32466 2011 10 6 55840 0.1627 0.3862 -0.32541 2011 10 7 55841 0.1630 0.3850 -0.32627 2011 10 8 55842 0.1634 0.3838 -0.32721 2011 10 9 55843 0.1637 0.3826 -0.32821 2011 10 10 55844 0.1640 0.3814 -0.32923 2011 10 11 55845 0.1642 0.3802 -0.33021 2011 10 12 55846 0.1645 0.3790 -0.33113 2011 10 13 55847 0.1647 0.3778 -0.33195 2011 10 14 55848 0.1649 0.3766 -0.33267 2011 10 15 55849 0.1651 0.3753 -0.33328 2011 10 16 55850 0.1652 0.3741 -0.33382 2011 10 17 55851 0.1654 0.3729 -0.33443 2011 10 18 55852 0.1655 0.3717 -0.33505 2011 10 19 55853 0.1656 0.3705 -0.33576 2011 10 20 55854 0.1656 0.3692 -0.33661 2011 10 21 55855 0.1657 0.3680 -0.33766 2011 10 22 55856 0.1657 0.3668 -0.33893 2011 10 23 55857 0.1657 0.3656 -0.34041 2011 10 24 55858 0.1657 0.3644 -0.34205 2011 10 25 55859 0.1657 0.3632 -0.34374 2011 10 26 55860 0.1656 0.3620 -0.34536 2011 10 27 55861 0.1655 0.3608 -0.34679 2011 10 28 55862 0.1654 0.3596 -0.34800 2011 10 29 55863 0.1653 0.3584 -0.34901 2011 10 30 55864 0.1652 0.3572 -0.34989 2011 10 31 55865 0.1650 0.3560 -0.35073 2011 11 1 55866 0.1648 0.3548 -0.35163 2011 11 2 55867 0.1646 0.3536 -0.35261 2011 11 3 55868 0.1644 0.3524 -0.35369 2011 11 4 55869 0.1642 0.3513 -0.35484 2011 11 5 55870 0.1639 0.3501 -0.35604 2011 11 6 55871 0.1636 0.3489 -0.35724 2011 11 7 55872 0.1633 0.3478 -0.35840 2011 11 8 55873 0.1630 0.3466 -0.35949 2011 11 9 55874 0.1627 0.3455 -0.36048 2011 11 10 55875 0.1623 0.3444 -0.36135 2011 11 11 55876 0.1619 0.3432 -0.36211 2011 11 12 55877 0.1616 0.3421 -0.36277 2011 11 13 55878 0.1612 0.3410 -0.36337 2011 11 14 55879 0.1607 0.3399 -0.36398 2011 11 15 55880 0.1603 0.3388 -0.36463 2011 11 16 55881 0.1598 0.3377 -0.36538 2011 11 17 55882 0.1594 0.3367 -0.36629 2011 11 18 55883 0.1589 0.3356 -0.36738 2011 11 19 55884 0.1584 0.3345 -0.36865 2011 11 20 55885 0.1578 0.3335 -0.37008 2011 11 21 55886 0.1573 0.3324 -0.37157 2011 11 22 55887 0.1568 0.3314 -0.37304 2011 11 23 55888 0.1562 0.3304 -0.37438 2011 11 24 55889 0.1556 0.3294 -0.37553 2011 11 25 55890 0.1550 0.3284 -0.37647 2011 11 26 55891 0.1544 0.3274 -0.37725 2011 11 27 55892 0.1538 0.3264 -0.37796 2011 11 28 55893 0.1531 0.3255 -0.37869 2011 11 29 55894 0.1525 0.3245 -0.37950 2011 11 30 55895 0.1518 0.3236 -0.38041 2011 12 1 55896 0.1511 0.3227 -0.38139 2011 12 2 55897 0.1504 0.3217 -0.38242 2011 12 3 55898 0.1497 0.3208 -0.38345 2011 12 4 55899 0.1490 0.3200 -0.38443 2011 12 5 55900 0.1483 0.3191 -0.38534 2011 12 6 55901 0.1475 0.3182 -0.38614 2011 12 7 55902 0.1468 0.3174 -0.38682 2011 12 8 55903 0.1460 0.3165 -0.38738 2011 12 9 55904 0.1453 0.3157 -0.38782 2011 12 10 55905 0.1445 0.3149 -0.38820 2011 12 11 55906 0.1437 0.3141 -0.38856 2011 12 12 55907 0.1429 0.3133 -0.38895 2011 12 13 55908 0.1421 0.3125 -0.38943 2011 12 14 55909 0.1412 0.3118 -0.39005 2011 12 15 55910 0.1404 0.3110 -0.39084 2011 12 16 55911 0.1396 0.3103 -0.39179 2011 12 17 55912 0.1387 0.3096 -0.39288 2011 12 18 55913 0.1379 0.3089 -0.39404 2011 12 19 55914 0.1370 0.3082 -0.39519 2011 12 20 55915 0.1361 0.3075 -0.39625 2011 12 21 55916 0.1353 0.3069 -0.39714 2011 12 22 55917 0.1344 0.3062 -0.39786 2011 12 23 55918 0.1335 0.3056 -0.39841 2011 12 24 55919 0.1326 0.3050 -0.39888 2011 12 25 55920 0.1317 0.3044 -0.39935 2011 12 26 55921 0.1308 0.3038 -0.39989 2011 12 27 55922 0.1299 0.3032 -0.40053 2011 12 28 55923 0.1290 0.3027 -0.40128 2011 12 29 55924 0.1280 0.3021 -0.40209 2011 12 30 55925 0.1271 0.3016 -0.40291 2011 12 31 55926 0.1262 0.3011 -0.40370 2012 1 1 55927 0.1253 0.3006 -0.40442 2012 1 2 55928 0.1243 0.3001 -0.40502 2012 1 3 55929 0.1234 0.2997 -0.40549 2012 1 4 55930 0.1224 0.2992 -0.40584 2012 1 5 55931 0.1215 0.2988 -0.40606 2012 1 6 55932 0.1206 0.2984 -0.40620 2012 1 7 55933 0.1196 0.2980 -0.40632 2012 1 8 55934 0.1187 0.2976 -0.40646 2012 1 9 55935 0.1177 0.2972 -0.40671 2012 1 10 55936 0.1168 0.2969 -0.40710 2012 1 11 55937 0.1158 0.2965 -0.40768 2012 1 12 55938 0.1149 0.2962 -0.40845 2012 1 13 55939 0.1139 0.2959 -0.40938 2012 1 14 55940 0.1130 0.2956 -0.41039 2012 1 15 55941 0.1120 0.2953 -0.41139 2012 1 16 55942 0.1111 0.2951 -0.41231 2012 1 17 55943 0.1101 0.2948 -0.41308 2012 1 18 55944 0.1092 0.2946 -0.41368 2012 1 19 55945 0.1083 0.2943 -0.41412 2012 1 20 55946 0.1073 0.2941 -0.41446 2012 1 21 55947 0.1064 0.2940 -0.41478 2012 1 22 55948 0.1054 0.2938 -0.41516 2012 1 23 55949 0.1045 0.2936 -0.41564 2012 1 24 55950 0.1036 0.2935 -0.41623 2012 1 25 55951 0.1027 0.2933 -0.41693 2012 1 26 55952 0.1018 0.2932 -0.41768 2012 1 27 55953 0.1008 0.2931 -0.41843 2012 1 28 55954 0.0999 0.2930 -0.41915 2012 1 29 55955 0.0990 0.2930 -0.41978 2012 1 30 55956 0.0981 0.2929 -0.42031 2012 1 31 55957 0.0972 0.2928 -0.42074 2012 2 1 55958 0.0963 0.2928 -0.42108 2012 2 2 55959 0.0955 0.2928 -0.42138 2012 2 3 55960 0.0946 0.2928 -0.42169 2012 2 4 55961 0.0937 0.2928 -0.42207 2012 2 5 55962 0.0928 0.2928 -0.42256 2012 2 6 55963 0.0920 0.2928 -0.42318 2012 2 7 55964 0.0911 0.2929 -0.42398 2012 2 8 55965 0.0903 0.2929 -0.42497 2012 2 9 55966 0.0894 0.2930 -0.42612 2012 2 10 55967 0.0886 0.2931 -0.42741 2012 2 11 55968 0.0878 0.2932 -0.42876 2012 2 12 55969 0.0870 0.2933 -0.43008 2012 2 13 55970 0.0862 0.2934 -0.43125 2012 2 14 55971 0.0854 0.2936 -0.43222 2012 2 15 55972 0.0846 0.2937 -0.43307 2012 2 16 55973 0.0838 0.2939 -0.43380 2012 2 17 55974 0.0830 0.2940 -0.43443 2012 2 18 55975 0.0823 0.2942 -0.43507 2012 2 19 55976 0.0815 0.2944 -0.43583 2012 2 20 55977 0.0808 0.2946 -0.43674 2012 2 21 55978 0.0801 0.2948 -0.43777 2012 2 22 55979 0.0793 0.2950 -0.43889 2012 2 23 55980 0.0786 0.2953 -0.44005 2012 2 24 55981 0.0779 0.2955 -0.44123 2012 2 25 55982 0.0772 0.2958 -0.44241 2012 2 26 55983 0.0765 0.2960 -0.44349 2012 2 27 55984 0.0759 0.2963 -0.44450 2012 2 28 55985 0.0752 0.2966 -0.44537 2012 2 29 55986 0.0745 0.2969 -0.44613 2012 3 1 55987 0.0739 0.2972 -0.44680 2012 3 2 55988 0.0733 0.2975 -0.44740 2012 3 3 55989 0.0727 0.2978 -0.44803 2012 3 4 55990 0.0721 0.2981 -0.44878 2012 3 5 55991 0.0715 0.2985 -0.44976 2012 3 6 55992 0.0709 0.2988 -0.45105 2012 3 7 55993 0.0703 0.2991 -0.45259 2012 3 8 55994 0.0697 0.2995 -0.45437 2012 3 9 55995 0.0692 0.2999 -0.45628 2012 3 10 55996 0.0687 0.3002 -0.45814 2012 3 11 55997 0.0681 0.3006 -0.45985 2012 3 12 55998 0.0676 0.3010 -0.46135 2012 3 13 55999 0.0671 0.3014 -0.46261 2012 3 14 56000 0.0666 0.3018 -0.46366 2012 3 15 56001 0.0662 0.3022 -0.46457 2012 3 16 56002 0.0657 0.3026 -0.46547 2012 3 17 56003 0.0652 0.3030 -0.46642 2012 3 18 56004 0.0648 0.3034 -0.46749 2012 3 19 56005 0.0644 0.3039 -0.46871 2012 3 20 56006 0.0640 0.3043 -0.47003 2012 3 21 56007 0.0636 0.3047 -0.47141 2012 3 22 56008 0.0632 0.3052 -0.47281 2012 3 23 56009 0.0628 0.3056 -0.47420 2012 3 24 56010 0.0624 0.3061 -0.47553 2012 3 25 56011 0.0621 0.3065 -0.47680 2012 3 26 56012 0.0617 0.3070 -0.47796 2012 3 27 56013 0.0614 0.3074 -0.47900 2012 3 28 56014 0.0611 0.3079 -0.47997 2012 3 29 56015 0.0608 0.3084 -0.48090 2012 3 30 56016 0.0605 0.3088 -0.48189 2012 3 31 56017 0.0602 0.3093 -0.48303 2012 4 1 56018 0.0599 0.3098 -0.48430 2012 4 2 56019 0.0597 0.3103 -0.48580 2012 4 3 56020 0.0595 0.3108 -0.48749 2012 4 4 56021 0.0592 0.3112 -0.48938 2012 4 5 56022 0.0590 0.3117 -0.49140 2012 4 6 56023 0.0588 0.3122 -0.49342 2012 4 7 56024 0.0586 0.3127 -0.49536 2012 4 8 56025 0.0584 0.3132 -0.49711 2012 4 9 56026 0.0583 0.3137 -0.49860 2012 4 10 56027 0.0581 0.3141 -0.49982 2012 4 11 56028 0.0580 0.3146 -0.50085 2012 4 12 56029 0.0578 0.3151 -0.50173 2012 4 13 56030 0.0577 0.3156 -0.50259 2012 4 14 56031 0.0576 0.3161 -0.50355 2012 4 15 56032 0.0575 0.3166 -0.50455 2012 4 16 56033 0.0574 0.3171 -0.50560 2012 4 17 56034 0.0573 0.3176 -0.50670 2012 4 18 56035 0.0573 0.3181 -0.50783 2012 4 19 56036 0.0572 0.3185 -0.50889 2012 4 20 56037 0.0572 0.3190 -0.50980 2012 4 21 56038 0.0571 0.3195 -0.51059 2012 4 22 56039 0.0571 0.3200 -0.51119 2012 4 23 56040 0.0571 0.3205 -0.51166 2012 4 24 56041 0.0571 0.3209 -0.51208 2012 4 25 56042 0.0571 0.3214 -0.51248 2012 4 26 56043 0.0571 0.3219 -0.51288 2012 4 27 56044 0.0572 0.3224 -0.51331 2012 4 28 56045 0.0572 0.3228 -0.51384 2012 4 29 56046 0.0573 0.3233 -0.51455 2012 4 30 56047 0.0573 0.3237 -0.51542 2012 5 1 56048 0.0574 0.3242 -0.51650 2012 5 2 56049 0.0575 0.3247 -0.51778 2012 5 3 56050 0.0576 0.3251 -0.51918 2012 5 4 56051 0.0576 0.3256 -0.52056 2012 5 5 56052 0.0578 0.3260 -0.52189 2012 5 6 56053 0.0579 0.3264 -0.52302 2012 5 7 56054 0.0580 0.3269 -0.52392 2012 5 8 56055 0.0581 0.3273 -0.52466 2012 5 9 56056 0.0583 0.3277 -0.52532 2012 5 10 56057 0.0584 0.3282 -0.52602 2012 5 11 56058 0.0586 0.3286 -0.52682 2012 5 12 56059 0.0587 0.3290 -0.52776 2012 5 13 56060 0.0589 0.3294 -0.52876 2012 5 14 56061 0.0591 0.3298 -0.52982 2012 5 15 56062 0.0593 0.3302 -0.53085 2012 5 16 56063 0.0595 0.3306 -0.53180 2012 5 17 56064 0.0597 0.3310 -0.53265 2012 5 18 56065 0.0599 0.3314 -0.53338 2012 5 19 56066 0.0601 0.3317 -0.53401 2012 5 20 56067 0.0603 0.3321 -0.53449 2012 5 21 56068 0.0605 0.3325 -0.53482 2012 5 22 56069 0.0607 0.3328 -0.53511 2012 5 23 56070 0.0610 0.3332 -0.53535 2012 5 24 56071 0.0612 0.3335 -0.53556 2012 5 25 56072 0.0615 0.3339 -0.53585 2012 5 26 56073 0.0617 0.3342 -0.53627 2012 5 27 56074 0.0620 0.3345 -0.53683 2012 5 28 56075 0.0622 0.3349 -0.53758 2012 5 29 56076 0.0625 0.3352 -0.53853 2012 5 30 56077 0.0628 0.3355 -0.53956 2012 5 31 56078 0.0630 0.3358 -0.54062 2012 6 1 56079 0.0633 0.3361 -0.54158 2012 6 2 56080 0.0636 0.3364 -0.54238 2012 6 3 56081 0.0639 0.3367 -0.54303 2012 6 4 56082 0.0641 0.3370 -0.54352 2012 6 5 56083 0.0644 0.3372 -0.54388 2012 6 6 56084 0.0647 0.3375 -0.54423 2012 6 7 56085 0.0650 0.3378 -0.54461 2012 6 8 56086 0.0653 0.3380 -0.54508 2012 6 9 56087 0.0656 0.3383 -0.54562 2012 6 10 56088 0.0659 0.3385 -0.54615 2012 6 11 56089 0.0662 0.3387 -0.54661 2012 6 12 56090 0.0665 0.3390 -0.54695 2012 6 13 56091 0.0668 0.3392 -0.54717 2012 6 14 56092 0.0671 0.3394 -0.54728 2012 6 15 56093 0.0674 0.3396 -0.54728 2012 6 16 56094 0.0677 0.3398 -0.54716 2012 6 17 56095 0.0680 0.3400 -0.54695 2012 6 18 56096 0.0683 0.3402 -0.54666 2012 6 19 56097 0.0686 0.3404 -0.54627 2012 6 20 56098 0.0689 0.3405 -0.54585 2012 6 21 56099 0.0692 0.3407 -0.54549 2012 6 22 56100 0.0695 0.3409 -0.54529 2012 6 23 56101 0.0698 0.3410 -0.54520 2012 6 24 56102 0.0701 0.3412 -0.54534 2012 6 25 56103 0.0704 0.3413 -0.54569 2012 6 26 56104 0.0707 0.3414 -0.54616 2012 6 27 56105 0.0710 0.3416 -0.54666 2012 6 28 56106 0.0713 0.3417 -0.54701 2012 6 29 56107 0.0716 0.3418 -0.54720 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) 55723 -68.15 0.47 -10.99 0.10 55724 -68.34 0.47 -10.85 0.10 55725 -68.58 0.46 -10.89 0.10 55726 -68.70 0.35 -11.07 0.11 55727 -68.62 0.35 -11.25 0.11 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55723 -0.330 0.187 -0.159 0.100 55724 -0.260 0.187 -0.169 0.100 55725 -0.211 0.183 -0.156 0.100 55726 -0.168 0.139 -0.132 0.110 55727 -0.119 0.139 -0.134 0.110 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).