********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 30 December 2010 Vol. XXIII No. 052 ______________________________________________________________________ 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 = -0.1 seconds beginning 3 June 2010 at 0000 UTC = -0.2 seconds beginning 6 January 2011 at 0000 UTC Beginning 1 January 2009: TAI-UTC(BIPM) = 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 10 12 24 55554 0.15313 .00010 0.21228 .00009 -0.134009 0.000011 10 12 25 55555 0.15148 .00010 0.21149 .00009 -0.134765 0.000010 10 12 26 55556 0.14962 .00009 0.21054 .00009 -0.135722 0.000010 10 12 27 55557 0.14738 .00009 0.20927 .00009 -0.136848 0.000008 10 12 28 55558 0.14455 .00009 0.20781 .00009 -0.137980 0.000008 10 12 29 55559 0.14105 .00009 0.20648 .00009 -0.138952 0.000008 10 12 30 55560 0.13730 .00009 0.20534 .00009 -0.139683 0.000006 _______________________________________________________________________ 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 = 0.0878 + 0.0115 cos A - 0.1125 sin A + 0.0382 cos C - 0.0256 sin C y = 0.3293 - 0.1011 cos A - 0.0039 sin A - 0.0256 cos C - 0.0382 sin C UT1-UTC = -0.1331 - 0.00074 (MJD - 55568) - (UT2-UT1) where A = 2*pi*(MJD-55560)/365.25 and C = 2*pi*(MJD-55560)/435. TAI-UTC(MJD 55561) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55560)**0.80 S t = 0.00025 (MJD-55560)**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) 2010 12 31 55561 0.1343 0.2039 -0.14017 2011 1 1 55562 0.1313 0.2029 -0.14045 2011 1 2 55563 0.1286 0.2021 -0.14061 2011 1 3 55564 0.1262 0.2014 -0.14069 2011 1 4 55565 0.1238 0.2008 -0.14077 2011 1 5 55566 0.1215 0.2002 -0.14091 2011 1 6 55567 0.1191 0.1998 -0.14114 2011 1 7 55568 0.1168 0.1993 -0.14149 2011 1 8 55569 0.1144 0.1989 -0.14194 2011 1 9 55570 0.1121 0.1986 -0.14247 2011 1 10 55571 0.1099 0.1983 -0.14305 2011 1 11 55572 0.1077 0.1981 -0.14364 2011 1 12 55573 0.1055 0.1979 -0.14417 2011 1 13 55574 0.1033 0.1978 -0.14464 2011 1 14 55575 0.1012 0.1978 -0.14498 2011 1 15 55576 0.0990 0.1977 -0.14521 2011 1 16 55577 0.0969 0.1977 -0.14534 2011 1 17 55578 0.0948 0.1978 -0.14542 2011 1 18 55579 0.0926 0.1979 -0.14555 2011 1 19 55580 0.0905 0.1980 -0.14582 2011 1 20 55581 0.0884 0.1982 -0.14630 2011 1 21 55582 0.0863 0.1984 -0.14704 2011 1 22 55583 0.0843 0.1986 -0.14803 2011 1 23 55584 0.0822 0.1989 -0.14918 2011 1 24 55585 0.0801 0.1992 -0.15035 2011 1 25 55586 0.0781 0.1995 -0.15141 2011 1 26 55587 0.0761 0.1998 -0.15228 2011 1 27 55588 0.0740 0.2002 -0.15292 2011 1 28 55589 0.0720 0.2007 -0.15336 2011 1 29 55590 0.0700 0.2011 -0.15365 2011 1 30 55591 0.0680 0.2016 -0.15388 2011 1 31 55592 0.0661 0.2022 -0.15411 2011 2 1 55593 0.0641 0.2027 -0.15443 2011 2 2 55594 0.0622 0.2033 -0.15488 2011 2 3 55595 0.0602 0.2039 -0.15547 2011 2 4 55596 0.0583 0.2046 -0.15618 2011 2 5 55597 0.0564 0.2052 -0.15698 2011 2 6 55598 0.0545 0.2060 -0.15783 2011 2 7 55599 0.0527 0.2067 -0.15869 2011 2 8 55600 0.0508 0.2075 -0.15952 2011 2 9 55601 0.0490 0.2082 -0.16028 2011 2 10 55602 0.0472 0.2091 -0.16094 2011 2 11 55603 0.0454 0.2099 -0.16150 2011 2 12 55604 0.0436 0.2108 -0.16196 2011 2 13 55605 0.0418 0.2117 -0.16238 2011 2 14 55606 0.0401 0.2126 -0.16281 2011 2 15 55607 0.0384 0.2136 -0.16335 2011 2 16 55608 0.0367 0.2146 -0.16410 2011 2 17 55609 0.0350 0.2156 -0.16512 2011 2 18 55610 0.0333 0.2166 -0.16641 2011 2 19 55611 0.0317 0.2177 -0.16794 2011 2 20 55612 0.0301 0.2188 -0.16957 2011 2 21 55613 0.0285 0.2199 -0.17115 2011 2 22 55614 0.0269 0.2210 -0.17257 2011 2 23 55615 0.0254 0.2222 -0.17373 2011 2 24 55616 0.0238 0.2234 -0.17466 2011 2 25 55617 0.0223 0.2246 -0.17538 2011 2 26 55618 0.0209 0.2258 -0.17600 2011 2 27 55619 0.0194 0.2271 -0.17660 2011 2 28 55620 0.0180 0.2283 -0.17724 2011 3 1 55621 0.0166 0.2296 -0.17797 2011 3 2 55622 0.0152 0.2309 -0.17881 2011 3 3 55623 0.0138 0.2323 -0.17977 2011 3 4 55624 0.0125 0.2336 -0.18082 2011 3 5 55625 0.0112 0.2350 -0.18192 2011 3 6 55626 0.0099 0.2364 -0.18303 2011 3 7 55627 0.0087 0.2378 -0.18411 2011 3 8 55628 0.0075 0.2393 -0.18511 2011 3 9 55629 0.0063 0.2407 -0.18601 2011 3 10 55630 0.0051 0.2422 -0.18681 2011 3 11 55631 0.0039 0.2437 -0.18750 2011 3 12 55632 0.0028 0.2452 -0.18813 2011 3 13 55633 0.0017 0.2467 -0.18876 2011 3 14 55634 0.0007 0.2483 -0.18944 2011 3 15 55635 -0.0004 0.2498 -0.19028 2011 3 16 55636 -0.0014 0.2514 -0.19135 2011 3 17 55637 -0.0023 0.2530 -0.19270 2011 3 18 55638 -0.0033 0.2546 -0.19430 2011 3 19 55639 -0.0042 0.2562 -0.19608 2011 3 20 55640 -0.0051 0.2578 -0.19790 2011 3 21 55641 -0.0059 0.2594 -0.19961 2011 3 22 55642 -0.0068 0.2611 -0.20109 2011 3 23 55643 -0.0076 0.2628 -0.20231 2011 3 24 55644 -0.0083 0.2644 -0.20331 2011 3 25 55645 -0.0091 0.2661 -0.20415 2011 3 26 55646 -0.0098 0.2678 -0.20494 2011 3 27 55647 -0.0105 0.2695 -0.20575 2011 3 28 55648 -0.0111 0.2713 -0.20664 2011 3 29 55649 -0.0117 0.2730 -0.20763 2011 3 30 55650 -0.0123 0.2747 -0.20873 2011 3 31 55651 -0.0129 0.2765 -0.20991 2011 4 1 55652 -0.0134 0.2782 -0.21115 2011 4 2 55653 -0.0139 0.2800 -0.21241 2011 4 3 55654 -0.0144 0.2818 -0.21364 2011 4 4 55655 -0.0148 0.2835 -0.21479 2011 4 5 55656 -0.0152 0.2853 -0.21585 2011 4 6 55657 -0.0156 0.2871 -0.21678 2011 4 7 55658 -0.0160 0.2889 -0.21760 2011 4 8 55659 -0.0163 0.2907 -0.21833 2011 4 9 55660 -0.0166 0.2925 -0.21902 2011 4 10 55661 -0.0168 0.2943 -0.21973 2011 4 11 55662 -0.0170 0.2961 -0.22053 2011 4 12 55663 -0.0172 0.2979 -0.22150 2011 4 13 55664 -0.0174 0.2997 -0.22270 2011 4 14 55665 -0.0175 0.3015 -0.22413 2011 4 15 55666 -0.0176 0.3033 -0.22577 2011 4 16 55667 -0.0177 0.3051 -0.22750 2011 4 17 55668 -0.0177 0.3070 -0.22920 2011 4 18 55669 -0.0177 0.3088 -0.23070 2011 4 19 55670 -0.0177 0.3106 -0.23196 2011 4 20 55671 -0.0177 0.3124 -0.23296 2011 4 21 55672 -0.0176 0.3142 -0.23376 2011 4 22 55673 -0.0175 0.3160 -0.23446 2011 4 23 55674 -0.0173 0.3178 -0.23514 2011 4 24 55675 -0.0172 0.3196 -0.23587 2011 4 25 55676 -0.0170 0.3214 -0.23669 2011 4 26 55677 -0.0168 0.3232 -0.23760 2011 4 27 55678 -0.0165 0.3250 -0.23858 2011 4 28 55679 -0.0162 0.3268 -0.23962 2011 4 29 55680 -0.0159 0.3286 -0.24066 2011 4 30 55681 -0.0156 0.3303 -0.24166 2011 5 1 55682 -0.0152 0.3321 -0.24260 2011 5 2 55683 -0.0148 0.3339 -0.24342 2011 5 3 55684 -0.0144 0.3356 -0.24412 2011 5 4 55685 -0.0139 0.3374 -0.24470 2011 5 5 55686 -0.0134 0.3391 -0.24517 2011 5 6 55687 -0.0129 0.3408 -0.24558 2011 5 7 55688 -0.0124 0.3426 -0.24598 2011 5 8 55689 -0.0118 0.3443 -0.24645 2011 5 9 55690 -0.0112 0.3460 -0.24704 2011 5 10 55691 -0.0106 0.3477 -0.24782 2011 5 11 55692 -0.0100 0.3494 -0.24880 2011 5 12 55693 -0.0093 0.3510 -0.24996 2011 5 13 55694 -0.0086 0.3527 -0.25123 2011 5 14 55695 -0.0079 0.3544 -0.25252 2011 5 15 55696 -0.0072 0.3560 -0.25370 2011 5 16 55697 -0.0064 0.3576 -0.25468 2011 5 17 55698 -0.0056 0.3592 -0.25541 2011 5 18 55699 -0.0048 0.3608 -0.25592 2011 5 19 55700 -0.0040 0.3624 -0.25629 2011 5 20 55701 -0.0031 0.3640 -0.25661 2011 5 21 55702 -0.0022 0.3656 -0.25695 2011 5 22 55703 -0.0013 0.3671 -0.25737 2011 5 23 55704 -0.0004 0.3686 -0.25788 2011 5 24 55705 0.0006 0.3702 -0.25846 2011 5 25 55706 0.0015 0.3717 -0.25909 2011 5 26 55707 0.0025 0.3731 -0.25972 2011 5 27 55708 0.0035 0.3746 -0.26032 2011 5 28 55709 0.0046 0.3761 -0.26084 2011 5 29 55710 0.0056 0.3775 -0.26126 2011 5 30 55711 0.0067 0.3789 -0.26155 2011 5 31 55712 0.0078 0.3803 -0.26170 2011 6 1 55713 0.0089 0.3817 -0.26173 2011 6 2 55714 0.0101 0.3831 -0.26169 2011 6 3 55715 0.0112 0.3844 -0.26161 2011 6 4 55716 0.0124 0.3857 -0.26158 2011 6 5 55717 0.0136 0.3871 -0.26166 2011 6 6 55718 0.0148 0.3883 -0.26191 2011 6 7 55719 0.0160 0.3896 -0.26233 2011 6 8 55720 0.0173 0.3909 -0.26292 2011 6 9 55721 0.0185 0.3921 -0.26362 2011 6 10 55722 0.0198 0.3933 -0.26433 2011 6 11 55723 0.0211 0.3945 -0.26496 2011 6 12 55724 0.0224 0.3957 -0.26542 2011 6 13 55725 0.0237 0.3968 -0.26566 2011 6 14 55726 0.0251 0.3980 -0.26569 2011 6 15 55727 0.0264 0.3991 -0.26556 2011 6 16 55728 0.0278 0.4002 -0.26535 2011 6 17 55729 0.0292 0.4012 -0.26515 2011 6 18 55730 0.0306 0.4023 -0.26501 2011 6 19 55731 0.0320 0.4033 -0.26498 2011 6 20 55732 0.0334 0.4043 -0.26503 2011 6 21 55733 0.0348 0.4053 -0.26514 2011 6 22 55734 0.0363 0.4062 -0.26526 2011 6 23 55735 0.0377 0.4071 -0.26536 2011 6 24 55736 0.0392 0.4081 -0.26540 2011 6 25 55737 0.0406 0.4089 -0.26532 2011 6 26 55738 0.0421 0.4098 -0.26512 2011 6 27 55739 0.0436 0.4107 -0.26477 2011 6 28 55740 0.0451 0.4115 -0.26429 2011 6 29 55741 0.0466 0.4123 -0.26371 2011 6 30 55742 0.0481 0.4130 -0.26307 2011 7 1 55743 0.0496 0.4138 -0.26244 2011 7 2 55744 0.0512 0.4145 -0.26189 2011 7 3 55745 0.0527 0.4152 -0.26147 2011 7 4 55746 0.0542 0.4159 -0.26122 2011 7 5 55747 0.0558 0.4165 -0.26112 2011 7 6 55748 0.0573 0.4172 -0.26111 2011 7 7 55749 0.0589 0.4178 -0.26110 2011 7 8 55750 0.0605 0.4183 -0.26102 2011 7 9 55751 0.0620 0.4189 -0.26079 2011 7 10 55752 0.0636 0.4194 -0.26037 2011 7 11 55753 0.0652 0.4199 -0.25977 2011 7 12 55754 0.0667 0.4204 -0.25905 2011 7 13 55755 0.0683 0.4209 -0.25826 2011 7 14 55756 0.0699 0.4213 -0.25748 2011 7 15 55757 0.0715 0.4217 -0.25678 2011 7 16 55758 0.0730 0.4221 -0.25621 2011 7 17 55759 0.0746 0.4225 -0.25578 2011 7 18 55760 0.0762 0.4228 -0.25545 2011 7 19 55761 0.0778 0.4231 -0.25520 2011 7 20 55762 0.0794 0.4234 -0.25496 2011 7 21 55763 0.0810 0.4237 -0.25470 2011 7 22 55764 0.0825 0.4239 -0.25436 2011 7 23 55765 0.0841 0.4241 -0.25393 2011 7 24 55766 0.0857 0.4243 -0.25338 2011 7 25 55767 0.0873 0.4245 -0.25273 2011 7 26 55768 0.0888 0.4246 -0.25198 2011 7 27 55769 0.0904 0.4247 -0.25120 2011 7 28 55770 0.0919 0.4248 -0.25046 2011 7 29 55771 0.0935 0.4249 -0.24985 2011 7 30 55772 0.0951 0.4249 -0.24944 2011 7 31 55773 0.0966 0.4250 -0.24930 2011 8 1 55774 0.0981 0.4250 -0.24943 2011 8 2 55775 0.0997 0.4249 -0.24979 2011 8 3 55776 0.1012 0.4249 -0.25029 2011 8 4 55777 0.1027 0.4248 -0.25080 2011 8 5 55778 0.1043 0.4247 -0.25119 2011 8 6 55779 0.1058 0.4246 -0.25138 2011 8 7 55780 0.1073 0.4245 -0.25136 2011 8 8 55781 0.1088 0.4243 -0.25114 2011 8 9 55782 0.1102 0.4241 -0.25081 2011 8 10 55783 0.1117 0.4239 -0.25049 2011 8 11 55784 0.1132 0.4237 -0.25026 2011 8 12 55785 0.1146 0.4235 -0.25019 2011 8 13 55786 0.1161 0.4232 -0.25031 2011 8 14 55787 0.1175 0.4229 -0.25057 2011 8 15 55788 0.1190 0.4226 -0.25094 2011 8 16 55789 0.1204 0.4222 -0.25134 2011 8 17 55790 0.1218 0.4219 -0.25173 2011 8 18 55791 0.1232 0.4215 -0.25213 2011 8 19 55792 0.1246 0.4211 -0.25256 2011 8 20 55793 0.1259 0.4207 -0.25293 2011 8 21 55794 0.1273 0.4202 -0.25312 2011 8 22 55795 0.1287 0.4198 -0.25320 2011 8 23 55796 0.1300 0.4193 -0.25327 2011 8 24 55797 0.1313 0.4188 -0.25340 2011 8 25 55798 0.1326 0.4183 -0.25365 2011 8 26 55799 0.1339 0.4177 -0.25402 2011 8 27 55800 0.1352 0.4172 -0.25457 2011 8 28 55801 0.1365 0.4166 -0.25538 2011 8 29 55802 0.1377 0.4160 -0.25638 2011 8 30 55803 0.1389 0.4154 -0.25748 2011 8 31 55804 0.1402 0.4148 -0.25860 2011 9 1 55805 0.1414 0.4141 -0.25957 2011 9 2 55806 0.1426 0.4135 -0.26033 2011 9 3 55807 0.1437 0.4128 -0.26091 2011 9 4 55808 0.1449 0.4121 -0.26130 2011 9 5 55809 0.1460 0.4114 -0.26156 2011 9 6 55810 0.1472 0.4106 -0.26171 2011 9 7 55811 0.1483 0.4099 -0.26181 2011 9 8 55812 0.1494 0.4091 -0.26189 2011 9 9 55813 0.1505 0.4083 -0.26198 2011 9 10 55814 0.1515 0.4075 -0.26215 2011 9 11 55815 0.1526 0.4067 -0.26244 2011 9 12 55816 0.1536 0.4059 -0.26282 2011 9 13 55817 0.1546 0.4051 -0.26329 2011 9 14 55818 0.1556 0.4042 -0.26382 2011 9 15 55819 0.1566 0.4033 -0.26435 2011 9 16 55820 0.1575 0.4024 -0.26487 2011 9 17 55821 0.1585 0.4016 -0.26536 2011 9 18 55822 0.1594 0.4006 -0.26581 2011 9 19 55823 0.1603 0.3997 -0.26623 2011 9 20 55824 0.1612 0.3988 -0.26659 2011 9 21 55825 0.1620 0.3978 -0.26694 2011 9 22 55826 0.1629 0.3969 -0.26741 2011 9 23 55827 0.1637 0.3959 -0.26808 2011 9 24 55828 0.1645 0.3949 -0.26903 2011 9 25 55829 0.1653 0.3940 -0.27026 2011 9 26 55830 0.1660 0.3929 -0.27167 2011 9 27 55831 0.1668 0.3919 -0.27323 2011 9 28 55832 0.1675 0.3909 -0.27479 2011 9 29 55833 0.1682 0.3899 -0.27621 2011 9 30 55834 0.1689 0.3888 -0.27741 2011 10 1 55835 0.1696 0.3878 -0.27838 2011 10 2 55836 0.1702 0.3867 -0.27917 2011 10 3 55837 0.1708 0.3857 -0.27983 2011 10 4 55838 0.1715 0.3846 -0.28045 2011 10 5 55839 0.1720 0.3835 -0.28113 2011 10 6 55840 0.1726 0.3824 -0.28188 2011 10 7 55841 0.1732 0.3813 -0.28276 2011 10 8 55842 0.1737 0.3802 -0.28376 2011 10 9 55843 0.1742 0.3791 -0.28478 2011 10 10 55844 0.1747 0.3780 -0.28580 2011 10 11 55845 0.1752 0.3769 -0.28678 2011 10 12 55846 0.1756 0.3758 -0.28763 2011 10 13 55847 0.1760 0.3746 -0.28835 2011 10 14 55848 0.1764 0.3735 -0.28895 2011 10 15 55849 0.1768 0.3724 -0.28949 2011 10 16 55850 0.1772 0.3712 -0.29001 2011 10 17 55851 0.1775 0.3701 -0.29059 2011 10 18 55852 0.1779 0.3689 -0.29115 2011 10 19 55853 0.1782 0.3678 -0.29168 2011 10 20 55854 0.1785 0.3666 -0.29225 2011 10 21 55855 0.1787 0.3655 -0.29299 2011 10 22 55856 0.1790 0.3643 -0.29390 2011 10 23 55857 0.1792 0.3632 -0.29493 2011 10 24 55858 0.1794 0.3620 -0.29611 2011 10 25 55859 0.1796 0.3608 -0.29736 2011 10 26 55860 0.1798 0.3597 -0.29859 2011 10 27 55861 0.1800 0.3585 -0.29969 2011 10 28 55862 0.1801 0.3573 -0.30059 2011 10 29 55863 0.1802 0.3562 -0.30133 2011 10 30 55864 0.1803 0.3550 -0.30196 2011 10 31 55865 0.1804 0.3538 -0.30249 2011 11 1 55866 0.1804 0.3527 -0.30303 2011 11 2 55867 0.1805 0.3515 -0.30364 2011 11 3 55868 0.1805 0.3503 -0.30442 2011 11 4 55869 0.1805 0.3492 -0.30543 2011 11 5 55870 0.1805 0.3480 -0.30652 2011 11 6 55871 0.1804 0.3469 -0.30769 2011 11 7 55872 0.1804 0.3457 -0.30892 2011 11 8 55873 0.1803 0.3446 -0.31001 2011 11 9 55874 0.1802 0.3434 -0.31095 2011 11 10 55875 0.1801 0.3423 -0.31184 2011 11 11 55876 0.1800 0.3411 -0.31262 2011 11 12 55877 0.1799 0.3400 -0.31336 2011 11 13 55878 0.1797 0.3389 -0.31405 2011 11 14 55879 0.1795 0.3378 -0.31473 2011 11 15 55880 0.1793 0.3366 -0.31551 2011 11 16 55881 0.1791 0.3355 -0.31641 2011 11 17 55882 0.1789 0.3344 -0.31745 2011 11 18 55883 0.1787 0.3333 -0.31866 2011 11 19 55884 0.1784 0.3322 -0.32010 2011 11 20 55885 0.1781 0.3311 -0.32170 2011 11 21 55886 0.1779 0.3300 -0.32338 2011 11 22 55887 0.1775 0.3290 -0.32512 2011 11 23 55888 0.1772 0.3279 -0.32677 2011 11 24 55889 0.1769 0.3268 -0.32824 2011 11 25 55890 0.1766 0.3258 -0.32950 2011 11 26 55891 0.1762 0.3247 -0.33060 2011 11 27 55892 0.1758 0.3237 -0.33159 2011 11 28 55893 0.1754 0.3226 -0.33252 2011 11 29 55894 0.1750 0.3216 -0.33349 2011 11 30 55895 0.1746 0.3206 -0.33451 2011 12 1 55896 0.1742 0.3196 -0.33558 2011 12 2 55897 0.1737 0.3186 -0.33666 2011 12 3 55898 0.1733 0.3176 -0.33773 2011 12 4 55899 0.1728 0.3166 -0.33875 2011 12 5 55900 0.1723 0.3156 -0.33973 2011 12 6 55901 0.1718 0.3147 -0.34069 2011 12 7 55902 0.1713 0.3137 -0.34162 2011 12 8 55903 0.1708 0.3128 -0.34247 2011 12 9 55904 0.1703 0.3118 -0.34323 2011 12 10 55905 0.1697 0.3109 -0.34394 2011 12 11 55906 0.1692 0.3100 -0.34466 2011 12 12 55907 0.1686 0.3091 -0.34538 2011 12 13 55908 0.1680 0.3082 -0.34614 2011 12 14 55909 0.1675 0.3073 -0.34698 2011 12 15 55910 0.1669 0.3065 -0.34787 2011 12 16 55911 0.1663 0.3056 -0.34892 2011 12 17 55912 0.1657 0.3047 -0.35010 2011 12 18 55913 0.1650 0.3039 -0.35132 2011 12 19 55914 0.1644 0.3031 -0.35254 2011 12 20 55915 0.1638 0.3023 -0.35370 2011 12 21 55916 0.1631 0.3015 -0.35474 2011 12 22 55917 0.1625 0.3007 -0.35557 2011 12 23 55918 0.1618 0.2999 -0.35621 2011 12 24 55919 0.1611 0.2991 -0.35672 2011 12 25 55920 0.1604 0.2984 -0.35717 2011 12 26 55921 0.1598 0.2976 -0.35771 2011 12 27 55922 0.1591 0.2969 -0.35839 2011 12 28 55923 0.1584 0.2962 -0.35918 2011 12 29 55924 0.1577 0.2955 -0.35999 2011 12 30 55925 0.1570 0.2948 -0.36079 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) 55538 -67.17 0.11 -6.64 0.34 55539 -66.91 0.11 -6.41 0.34 55540 -66.72 0.11 -6.34 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55538 0.305 0.044 -0.241 0.340 55539 0.325 0.044 -0.237 0.340 55540 0.342 0.044 -0.218 0.340 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.