********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 16 December 2010 Vol. XXIII No. 050 ______________________________________________________________________ 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 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 10 55540 0.18182 .00009 0.22766 .00009 -0.127455 0.000015 10 12 11 55541 0.17992 .00009 0.22675 .00009 -0.128179 0.000014 10 12 12 55542 0.17773 .00009 0.22579 .00009 -0.128903 0.000013 10 12 13 55543 0.17510 .00009 0.22504 .00009 -0.129634 0.000013 10 12 14 55544 0.17185 .00009 0.22398 .00009 -0.130355 0.000014 10 12 15 55545 0.16848 .00009 0.22241 .00009 -0.131000 0.000011 10 12 16 55546 0.16595 .00009 0.22082 .00009 -0.131532 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 = 0.0925 + 0.0339 cos A - 0.1133 sin A + 0.0435 cos C - 0.0097 sin C y = 0.3304 - 0.1025 cos A - 0.0231 sin A - 0.0097 cos C - 0.0435 sin C UT1-UTC = -0.1257 - 0.00076 (MJD - 55554) - (UT2-UT1) where A = 2*pi*(MJD-55546)/365.25 and C = 2*pi*(MJD-55546)/435. TAI-UTC(MJD 55547) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55546)**0.80 S t = 0.00025 (MJD-55546)**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 17 55547 0.1633 0.2193 -0.13196 2010 12 18 55548 0.1612 0.2182 -0.13224 2010 12 19 55549 0.1592 0.2172 -0.13236 2010 12 20 55550 0.1572 0.2163 -0.13236 2010 12 21 55551 0.1552 0.2154 -0.13231 2010 12 22 55552 0.1532 0.2146 -0.13235 2010 12 23 55553 0.1512 0.2138 -0.13254 2010 12 24 55554 0.1491 0.2131 -0.13296 2010 12 25 55555 0.1471 0.2123 -0.13358 2010 12 26 55556 0.1451 0.2116 -0.13435 2010 12 27 55557 0.1430 0.2110 -0.13522 2010 12 28 55558 0.1410 0.2104 -0.13609 2010 12 29 55559 0.1390 0.2098 -0.13685 2010 12 30 55560 0.1369 0.2092 -0.13745 2010 12 31 55561 0.1349 0.2087 -0.13786 2011 1 1 55562 0.1328 0.2082 -0.13813 2011 1 2 55563 0.1308 0.2077 -0.13830 2011 1 3 55564 0.1287 0.2073 -0.13842 2011 1 4 55565 0.1266 0.2069 -0.13858 2011 1 5 55566 0.1246 0.2065 -0.13884 2011 1 6 55567 0.1225 0.2062 -0.13923 2011 1 7 55568 0.1204 0.2059 -0.13975 2011 1 8 55569 0.1184 0.2056 -0.14037 2011 1 9 55570 0.1163 0.2054 -0.14106 2011 1 10 55571 0.1143 0.2052 -0.14178 2011 1 11 55572 0.1122 0.2050 -0.14248 2011 1 12 55573 0.1101 0.2049 -0.14314 2011 1 13 55574 0.1081 0.2048 -0.14370 2011 1 14 55575 0.1060 0.2047 -0.14416 2011 1 15 55576 0.1040 0.2047 -0.14451 2011 1 16 55577 0.1019 0.2047 -0.14477 2011 1 17 55578 0.0999 0.2047 -0.14501 2011 1 18 55579 0.0979 0.2047 -0.14532 2011 1 19 55580 0.0958 0.2048 -0.14577 2011 1 20 55581 0.0938 0.2050 -0.14644 2011 1 21 55582 0.0918 0.2051 -0.14736 2011 1 22 55583 0.0898 0.2053 -0.14850 2011 1 23 55584 0.0878 0.2055 -0.14978 2011 1 24 55585 0.0858 0.2057 -0.15107 2011 1 25 55586 0.0838 0.2060 -0.15224 2011 1 26 55587 0.0818 0.2063 -0.15322 2011 1 27 55588 0.0799 0.2067 -0.15397 2011 1 28 55589 0.0779 0.2070 -0.15451 2011 1 29 55590 0.0760 0.2074 -0.15491 2011 1 30 55591 0.0741 0.2079 -0.15526 2011 1 31 55592 0.0721 0.2083 -0.15562 2011 2 1 55593 0.0702 0.2088 -0.15607 2011 2 2 55594 0.0683 0.2093 -0.15664 2011 2 3 55595 0.0665 0.2099 -0.15734 2011 2 4 55596 0.0646 0.2104 -0.15815 2011 2 5 55597 0.0628 0.2110 -0.15904 2011 2 6 55598 0.0609 0.2117 -0.15997 2011 2 7 55599 0.0591 0.2123 -0.16089 2011 2 8 55600 0.0573 0.2130 -0.16174 2011 2 9 55601 0.0555 0.2138 -0.16251 2011 2 10 55602 0.0537 0.2145 -0.16316 2011 2 11 55603 0.0520 0.2153 -0.16369 2011 2 12 55604 0.0502 0.2161 -0.16413 2011 2 13 55605 0.0485 0.2169 -0.16452 2011 2 14 55606 0.0468 0.2178 -0.16492 2011 2 15 55607 0.0451 0.2186 -0.16542 2011 2 16 55608 0.0435 0.2195 -0.16612 2011 2 17 55609 0.0418 0.2205 -0.16708 2011 2 18 55610 0.0402 0.2214 -0.16832 2011 2 19 55611 0.0386 0.2224 -0.16978 2011 2 20 55612 0.0370 0.2234 -0.17134 2011 2 21 55613 0.0355 0.2244 -0.17284 2011 2 22 55614 0.0339 0.2255 -0.17417 2011 2 23 55615 0.0324 0.2266 -0.17526 2011 2 24 55616 0.0309 0.2277 -0.17610 2011 2 25 55617 0.0294 0.2288 -0.17675 2011 2 26 55618 0.0280 0.2300 -0.17731 2011 2 27 55619 0.0265 0.2311 -0.17785 2011 2 28 55620 0.0251 0.2323 -0.17846 2011 3 1 55621 0.0237 0.2335 -0.17917 2011 3 2 55622 0.0224 0.2348 -0.18001 2011 3 3 55623 0.0210 0.2360 -0.18098 2011 3 4 55624 0.0197 0.2373 -0.18205 2011 3 5 55625 0.0184 0.2386 -0.18318 2011 3 6 55626 0.0172 0.2399 -0.18433 2011 3 7 55627 0.0160 0.2412 -0.18544 2011 3 8 55628 0.0147 0.2426 -0.18648 2011 3 9 55629 0.0136 0.2440 -0.18742 2011 3 10 55630 0.0124 0.2453 -0.18825 2011 3 11 55631 0.0113 0.2467 -0.18899 2011 3 12 55632 0.0102 0.2482 -0.18965 2011 3 13 55633 0.0091 0.2496 -0.19030 2011 3 14 55634 0.0080 0.2511 -0.19102 2011 3 15 55635 0.0070 0.2525 -0.19188 2011 3 16 55636 0.0060 0.2540 -0.19297 2011 3 17 55637 0.0050 0.2555 -0.19433 2011 3 18 55638 0.0041 0.2570 -0.19595 2011 3 19 55639 0.0032 0.2586 -0.19774 2011 3 20 55640 0.0023 0.2601 -0.19956 2011 3 21 55641 0.0014 0.2617 -0.20127 2011 3 22 55642 0.0006 0.2632 -0.20275 2011 3 23 55643 -0.0002 0.2648 -0.20397 2011 3 24 55644 -0.0010 0.2664 -0.20495 2011 3 25 55645 -0.0017 0.2680 -0.20578 2011 3 26 55646 -0.0024 0.2696 -0.20655 2011 3 27 55647 -0.0031 0.2713 -0.20735 2011 3 28 55648 -0.0038 0.2729 -0.20822 2011 3 29 55649 -0.0044 0.2745 -0.20919 2011 3 30 55650 -0.0050 0.2762 -0.21027 2011 3 31 55651 -0.0056 0.2778 -0.21144 2011 4 1 55652 -0.0061 0.2795 -0.21268 2011 4 2 55653 -0.0067 0.2812 -0.21394 2011 4 3 55654 -0.0071 0.2829 -0.21517 2011 4 4 55655 -0.0076 0.2846 -0.21631 2011 4 5 55656 -0.0080 0.2863 -0.21735 2011 4 6 55657 -0.0084 0.2880 -0.21827 2011 4 7 55658 -0.0088 0.2897 -0.21909 2011 4 8 55659 -0.0091 0.2914 -0.21982 2011 4 9 55660 -0.0094 0.2931 -0.22051 2011 4 10 55661 -0.0097 0.2948 -0.22123 2011 4 11 55662 -0.0100 0.2965 -0.22204 2011 4 12 55663 -0.0102 0.2983 -0.22303 2011 4 13 55664 -0.0104 0.3000 -0.22424 2011 4 14 55665 -0.0106 0.3017 -0.22570 2011 4 15 55666 -0.0107 0.3035 -0.22737 2011 4 16 55667 -0.0108 0.3052 -0.22913 2011 4 17 55668 -0.0109 0.3069 -0.23086 2011 4 18 55669 -0.0109 0.3087 -0.23243 2011 4 19 55670 -0.0109 0.3104 -0.23375 2011 4 20 55671 -0.0109 0.3121 -0.23481 2011 4 21 55672 -0.0109 0.3139 -0.23568 2011 4 22 55673 -0.0108 0.3156 -0.23644 2011 4 23 55674 -0.0107 0.3173 -0.23718 2011 4 24 55675 -0.0106 0.3191 -0.23798 2011 4 25 55676 -0.0104 0.3208 -0.23887 2011 4 26 55677 -0.0102 0.3225 -0.23984 2011 4 27 55678 -0.0100 0.3242 -0.24089 2011 4 28 55679 -0.0098 0.3259 -0.24199 2011 4 29 55680 -0.0095 0.3277 -0.24310 2011 4 30 55681 -0.0092 0.3294 -0.24417 2011 5 1 55682 -0.0089 0.3311 -0.24517 2011 5 2 55683 -0.0086 0.3327 -0.24606 2011 5 3 55684 -0.0082 0.3344 -0.24682 2011 5 4 55685 -0.0078 0.3361 -0.24746 2011 5 5 55686 -0.0073 0.3378 -0.24798 2011 5 6 55687 -0.0069 0.3394 -0.24845 2011 5 7 55688 -0.0064 0.3411 -0.24890 2011 5 8 55689 -0.0059 0.3428 -0.24941 2011 5 9 55690 -0.0054 0.3444 -0.25005 2011 5 10 55691 -0.0048 0.3460 -0.25087 2011 5 11 55692 -0.0042 0.3476 -0.25189 2011 5 12 55693 -0.0036 0.3493 -0.25309 2011 5 13 55694 -0.0030 0.3508 -0.25440 2011 5 14 55695 -0.0023 0.3524 -0.25572 2011 5 15 55696 -0.0016 0.3540 -0.25693 2011 5 16 55697 -0.0009 0.3556 -0.25793 2011 5 17 55698 -0.0002 0.3571 -0.25870 2011 5 18 55699 0.0006 0.3587 -0.25924 2011 5 19 55700 0.0014 0.3602 -0.25963 2011 5 20 55701 0.0022 0.3617 -0.25997 2011 5 21 55702 0.0030 0.3632 -0.26034 2011 5 22 55703 0.0038 0.3647 -0.26078 2011 5 23 55704 0.0047 0.3662 -0.26131 2011 5 24 55705 0.0056 0.3677 -0.26191 2011 5 25 55706 0.0065 0.3691 -0.26255 2011 5 26 55707 0.0074 0.3705 -0.26320 2011 5 27 55708 0.0084 0.3719 -0.26381 2011 5 28 55709 0.0094 0.3733 -0.26435 2011 5 29 55710 0.0104 0.3747 -0.26479 2011 5 30 55711 0.0114 0.3761 -0.26508 2011 5 31 55712 0.0124 0.3775 -0.26525 2011 6 1 55713 0.0135 0.3788 -0.26530 2011 6 2 55714 0.0145 0.3801 -0.26526 2011 6 3 55715 0.0156 0.3814 -0.26520 2011 6 4 55716 0.0167 0.3827 -0.26518 2011 6 5 55717 0.0179 0.3840 -0.26527 2011 6 6 55718 0.0190 0.3852 -0.26552 2011 6 7 55719 0.0202 0.3864 -0.26595 2011 6 8 55720 0.0213 0.3876 -0.26653 2011 6 9 55721 0.0225 0.3888 -0.26721 2011 6 10 55722 0.0237 0.3900 -0.26790 2011 6 11 55723 0.0250 0.3912 -0.26850 2011 6 12 55724 0.0262 0.3923 -0.26892 2011 6 13 55725 0.0275 0.3934 -0.26910 2011 6 14 55726 0.0287 0.3945 -0.26906 2011 6 15 55727 0.0300 0.3956 -0.26883 2011 6 16 55728 0.0313 0.3966 -0.26850 2011 6 17 55729 0.0326 0.3977 -0.26816 2011 6 18 55730 0.0339 0.3987 -0.26785 2011 6 19 55731 0.0353 0.3997 -0.26761 2011 6 20 55732 0.0366 0.4006 -0.26743 2011 6 21 55733 0.0380 0.4016 -0.26728 2011 6 22 55734 0.0393 0.4025 -0.26711 2011 6 23 55735 0.0407 0.4034 -0.26691 2011 6 24 55736 0.0421 0.4043 -0.26662 2011 6 25 55737 0.0435 0.4051 -0.26622 2011 6 26 55738 0.0449 0.4060 -0.26571 2011 6 27 55739 0.0463 0.4068 -0.26506 2011 6 28 55740 0.0478 0.4076 -0.26432 2011 6 29 55741 0.0492 0.4084 -0.26350 2011 6 30 55742 0.0506 0.4091 -0.26267 2011 7 1 55743 0.0521 0.4098 -0.26189 2011 7 2 55744 0.0536 0.4106 -0.26125 2011 7 3 55745 0.0550 0.4112 -0.26081 2011 7 4 55746 0.0565 0.4119 -0.26060 2011 7 5 55747 0.0580 0.4125 -0.26061 2011 7 6 55748 0.0594 0.4131 -0.26078 2011 7 7 55749 0.0609 0.4137 -0.26103 2011 7 8 55750 0.0624 0.4143 -0.26125 2011 7 9 55751 0.0639 0.4148 -0.26137 2011 7 10 55752 0.0654 0.4154 -0.26134 2011 7 11 55753 0.0669 0.4158 -0.26114 2011 7 12 55754 0.0684 0.4163 -0.26082 2011 7 13 55755 0.0699 0.4168 -0.26044 2011 7 14 55756 0.0714 0.4172 -0.26008 2011 7 15 55757 0.0729 0.4176 -0.25980 2011 7 16 55758 0.0744 0.4180 -0.25965 2011 7 17 55759 0.0760 0.4183 -0.25966 2011 7 18 55760 0.0775 0.4187 -0.25979 2011 7 19 55761 0.0790 0.4190 -0.26000 2011 7 20 55762 0.0805 0.4193 -0.26024 2011 7 21 55763 0.0820 0.4195 -0.26048 2011 7 22 55764 0.0835 0.4198 -0.26070 2011 7 23 55765 0.0850 0.4200 -0.26085 2011 7 24 55766 0.0865 0.4202 -0.26088 2011 7 25 55767 0.0880 0.4203 -0.26077 2011 7 26 55768 0.0895 0.4205 -0.26059 2011 7 27 55769 0.0910 0.4206 -0.26041 2011 7 28 55770 0.0925 0.4207 -0.26029 2011 7 29 55771 0.0940 0.4208 -0.26025 2011 7 30 55772 0.0955 0.4208 -0.26034 2011 7 31 55773 0.0970 0.4209 -0.26064 2011 8 1 55774 0.0984 0.4209 -0.26114 2011 8 2 55775 0.0999 0.4209 -0.26175 2011 8 3 55776 0.1014 0.4208 -0.26243 2011 8 4 55777 0.1028 0.4208 -0.26302 2011 8 5 55778 0.1043 0.4207 -0.26345 2011 8 6 55779 0.1057 0.4206 -0.26372 2011 8 7 55780 0.1072 0.4205 -0.26379 2011 8 8 55781 0.1086 0.4203 -0.26368 2011 8 9 55782 0.1100 0.4202 -0.26340 2011 8 10 55783 0.1114 0.4200 -0.26301 2011 8 11 55784 0.1128 0.4198 -0.26257 2011 8 12 55785 0.1142 0.4196 -0.26212 2011 8 13 55786 0.1156 0.4193 -0.26176 2011 8 14 55787 0.1170 0.4190 -0.26153 2011 8 15 55788 0.1184 0.4187 -0.26143 2011 8 16 55789 0.1197 0.4184 -0.26144 2011 8 17 55790 0.1211 0.4181 -0.26154 2011 8 18 55791 0.1224 0.4177 -0.26165 2011 8 19 55792 0.1237 0.4174 -0.26177 2011 8 20 55793 0.1250 0.4170 -0.26186 2011 8 21 55794 0.1263 0.4166 -0.26188 2011 8 22 55795 0.1276 0.4161 -0.26185 2011 8 23 55796 0.1289 0.4157 -0.26174 2011 8 24 55797 0.1302 0.4152 -0.26156 2011 8 25 55798 0.1314 0.4147 -0.26147 2011 8 26 55799 0.1327 0.4142 -0.26156 2011 8 27 55800 0.1339 0.4137 -0.26190 2011 8 28 55801 0.1351 0.4132 -0.26251 2011 8 29 55802 0.1363 0.4126 -0.26335 2011 8 30 55803 0.1375 0.4120 -0.26436 2011 8 31 55804 0.1386 0.4114 -0.26544 2011 9 1 55805 0.1398 0.4108 -0.26643 2011 9 2 55806 0.1409 0.4102 -0.26722 2011 9 3 55807 0.1421 0.4095 -0.26779 2011 9 4 55808 0.1432 0.4089 -0.26815 2011 9 5 55809 0.1443 0.4082 -0.26834 2011 9 6 55810 0.1453 0.4075 -0.26844 2011 9 7 55811 0.1464 0.4068 -0.26857 2011 9 8 55812 0.1474 0.4061 -0.26876 2011 9 9 55813 0.1485 0.4054 -0.26910 2011 9 10 55814 0.1495 0.4046 -0.26959 2011 9 11 55815 0.1505 0.4038 -0.27015 2011 9 12 55816 0.1515 0.4031 -0.27075 2011 9 13 55817 0.1524 0.4023 -0.27135 2011 9 14 55818 0.1534 0.4015 -0.27187 2011 9 15 55819 0.1543 0.4006 -0.27227 2011 9 16 55820 0.1552 0.3998 -0.27257 2011 9 17 55821 0.1561 0.3990 -0.27281 2011 9 18 55822 0.1570 0.3981 -0.27302 2011 9 19 55823 0.1578 0.3972 -0.27326 2011 9 20 55824 0.1587 0.3963 -0.27346 2011 9 21 55825 0.1595 0.3955 -0.27360 2011 9 22 55826 0.1603 0.3946 -0.27376 2011 9 23 55827 0.1611 0.3936 -0.27409 2011 9 24 55828 0.1618 0.3927 -0.27459 2011 9 25 55829 0.1626 0.3918 -0.27527 2011 9 26 55830 0.1633 0.3908 -0.27614 2011 9 27 55831 0.1640 0.3899 -0.27716 2011 9 28 55832 0.1647 0.3889 -0.27821 2011 9 29 55833 0.1654 0.3879 -0.27917 2011 9 30 55834 0.1660 0.3870 -0.27994 2011 10 1 55835 0.1667 0.3860 -0.28052 2011 10 2 55836 0.1673 0.3850 -0.28095 2011 10 3 55837 0.1679 0.3840 -0.28124 2011 10 4 55838 0.1685 0.3829 -0.28151 2011 10 5 55839 0.1690 0.3819 -0.28183 2011 10 6 55840 0.1696 0.3809 -0.28234 2011 10 7 55841 0.1701 0.3799 -0.28310 2011 10 8 55842 0.1706 0.3788 -0.28401 2011 10 9 55843 0.1711 0.3778 -0.28504 2011 10 10 55844 0.1715 0.3767 -0.28618 2011 10 11 55845 0.1720 0.3757 -0.28723 2011 10 12 55846 0.1724 0.3746 -0.28817 2011 10 13 55847 0.1728 0.3735 -0.28907 2011 10 14 55848 0.1732 0.3725 -0.28988 2011 10 15 55849 0.1735 0.3714 -0.29063 2011 10 16 55850 0.1739 0.3703 -0.29132 2011 10 17 55851 0.1742 0.3692 -0.29197 2011 10 18 55852 0.1745 0.3682 -0.29269 2011 10 19 55853 0.1748 0.3671 -0.29351 2011 10 20 55854 0.1751 0.3660 -0.29445 2011 10 21 55855 0.1753 0.3649 -0.29558 2011 10 22 55856 0.1755 0.3638 -0.29698 2011 10 23 55857 0.1758 0.3627 -0.29860 2011 10 24 55858 0.1760 0.3616 -0.30039 2011 10 25 55859 0.1761 0.3605 -0.30230 2011 10 26 55860 0.1763 0.3594 -0.30418 2011 10 27 55861 0.1764 0.3583 -0.30589 2011 10 28 55862 0.1765 0.3572 -0.30738 2011 10 29 55863 0.1766 0.3561 -0.30865 2011 10 30 55864 0.1767 0.3550 -0.30976 2011 10 31 55865 0.1768 0.3539 -0.31076 2011 11 1 55866 0.1768 0.3528 -0.31177 2011 11 2 55867 0.1769 0.3517 -0.31282 2011 11 3 55868 0.1769 0.3506 -0.31393 2011 11 4 55869 0.1769 0.3496 -0.31509 2011 11 5 55870 0.1768 0.3485 -0.31629 2011 11 6 55871 0.1768 0.3474 -0.31748 2011 11 7 55872 0.1767 0.3463 -0.31867 2011 11 8 55873 0.1767 0.3452 -0.31987 2011 11 9 55874 0.1766 0.3441 -0.32106 2011 11 10 55875 0.1765 0.3431 -0.32218 2011 11 11 55876 0.1763 0.3420 -0.32320 2011 11 12 55877 0.1762 0.3409 -0.32414 2011 11 13 55878 0.1760 0.3399 -0.32506 2011 11 14 55879 0.1758 0.3388 -0.32593 2011 11 15 55880 0.1757 0.3378 -0.32681 2011 11 16 55881 0.1754 0.3367 -0.32773 2011 11 17 55882 0.1752 0.3357 -0.32870 2011 11 18 55883 0.1750 0.3347 -0.32983 2011 11 19 55884 0.1747 0.3336 -0.33115 2011 11 20 55885 0.1745 0.3326 -0.33258 2011 11 21 55886 0.1742 0.3316 -0.33409 2011 11 22 55887 0.1739 0.3306 -0.33562 2011 11 23 55888 0.1736 0.3296 -0.33706 2011 11 24 55889 0.1732 0.3286 -0.33828 2011 11 25 55890 0.1729 0.3276 -0.33927 2011 11 26 55891 0.1725 0.3266 -0.34005 2011 11 27 55892 0.1722 0.3256 -0.34071 2011 11 28 55893 0.1718 0.3247 -0.34140 2011 11 29 55894 0.1714 0.3237 -0.34220 2011 11 30 55895 0.1710 0.3228 -0.34311 2011 12 1 55896 0.1706 0.3218 -0.34403 2011 12 2 55897 0.1701 0.3209 -0.34498 2011 12 3 55898 0.1697 0.3200 -0.34591 2011 12 4 55899 0.1692 0.3191 -0.34680 2011 12 5 55900 0.1687 0.3181 -0.34767 2011 12 6 55901 0.1683 0.3173 -0.34842 2011 12 7 55902 0.1678 0.3164 -0.34906 2011 12 8 55903 0.1673 0.3155 -0.34958 2011 12 9 55904 0.1668 0.3146 -0.35006 2011 12 10 55905 0.1662 0.3138 -0.35045 2011 12 11 55906 0.1657 0.3129 -0.35080 2011 12 12 55907 0.1651 0.3121 -0.35117 2011 12 13 55908 0.1646 0.3113 -0.35160 2011 12 14 55909 0.1640 0.3104 -0.35209 2011 12 15 55910 0.1634 0.3096 -0.35276 2011 12 16 55911 0.1629 0.3088 -0.35356 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) 55525 -68.63 0.17 -7.24 0.34 55526 -68.28 0.17 -7.35 0.34 55527 -68.08 0.35 -7.42 0.22 55528 -68.00 0.74 -7.41 0.34 55529 -68.00 0.74 -7.31 0.34 55530 -68.06 0.74 -7.12 0.34 55531 -68.15 0.13 -6.88 0.13 55532 -68.24 0.13 -6.70 0.13 55533 -68.23 0.13 -6.69 0.13 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55525 0.215 0.068 -0.185 0.340 55526 0.222 0.068 -0.185 0.340 55527 0.231 0.139 -0.194 0.220 55528 0.241 0.294 -0.186 0.340 55529 0.242 0.294 -0.169 0.340 55530 0.237 0.294 -0.162 0.340 55531 0.238 0.052 -0.167 0.130 55532 0.246 0.052 -0.176 0.130 55533 0.270 0.052 -0.184 0.130 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.