********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 13 December 2007 Vol. XX 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 = -0.2 seconds beginning 14 June 2007 at 0000 UTC Beginning 1 January 2006: TAI-UTC(BIPM) = 33.000 000 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 7 12 7 54441 -.04238 .00009 .21987 .00010 -.253511 .000008 7 12 8 54442 -.04456 .00010 .22111 .00010 -.254093 .000007 7 12 9 54443 -.04627 .00010 .22243 .00010 -.254444 .000007 7 12 10 54444 -.04771 .00009 .22396 .00010 -.254659 .000008 7 12 11 54445 -.04910 .00009 .22542 .00010 -.254801 .000007 7 12 12 54446 -.05036 .00009 .22665 .00010 -.254999 .000048 7 12 13 54447 -.05151 .00009 .22786 .00010 -.255380 .000057 _______________________________________________________________________ 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 = .0638 - .0227 cos A - .1006 sin A - .0893 cos C - .0376 sin C y = .3569 - .0955 cos A + .0192 sin A - .0376 cos C + .0893 sin C UT1-UTC = -.2589 - .00089 (MJD - 54455) - (UT2-UT1) where A = 2*pi*(MJD-54447)/365.25 and C = 2*pi*(MJD-54447)/435. TAI-UTC(MJD 54448) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-54447)**0.80 S t = 0.00025 (MJD-54447)**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) 2007 12 14 54448 -0.0530 0.2294 -0.25600 2007 12 15 54449 -0.0545 0.2310 -0.25686 2007 12 16 54450 -0.0561 0.2328 -0.25794 2007 12 17 54451 -0.0579 0.2347 -0.25920 2007 12 18 54452 -0.0598 0.2366 -0.26056 2007 12 19 54453 -0.0616 0.2386 -0.26191 2007 12 20 54454 -0.0634 0.2405 -0.26312 2007 12 21 54455 -0.0652 0.2425 -0.26409 2007 12 22 54456 -0.0670 0.2444 -0.26477 2007 12 23 54457 -0.0688 0.2464 -0.26521 2007 12 24 54458 -0.0706 0.2485 -0.26554 2007 12 25 54459 -0.0723 0.2506 -0.26591 2007 12 26 54460 -0.0741 0.2527 -0.26642 2007 12 27 54461 -0.0759 0.2549 -0.26711 2007 12 28 54462 -0.0776 0.2571 -0.26799 2007 12 29 54463 -0.0793 0.2593 -0.26904 2007 12 30 54464 -0.0810 0.2615 -0.27018 2007 12 31 54465 -0.0826 0.2638 -0.27134 2008 1 1 54466 -0.0842 0.2661 -0.27243 2008 1 2 54467 -0.0858 0.2685 -0.27340 2008 1 3 54468 -0.0873 0.2708 -0.27422 2008 1 4 54469 -0.0889 0.2732 -0.27488 2008 1 5 54470 -0.0903 0.2756 -0.27542 2008 1 6 54471 -0.0918 0.2781 -0.27585 2008 1 7 54472 -0.0932 0.2805 -0.27622 2008 1 8 54473 -0.0946 0.2830 -0.27662 2008 1 9 54474 -0.0959 0.2855 -0.27712 2008 1 10 54475 -0.0972 0.2880 -0.27777 2008 1 11 54476 -0.0985 0.2906 -0.27863 2008 1 12 54477 -0.0997 0.2931 -0.27971 2008 1 13 54478 -0.1008 0.2957 -0.28095 2008 1 14 54479 -0.1020 0.2983 -0.28226 2008 1 15 54480 -0.1031 0.3009 -0.28354 2008 1 16 54481 -0.1041 0.3036 -0.28468 2008 1 17 54482 -0.1051 0.3062 -0.28559 2008 1 18 54483 -0.1061 0.3089 -0.28623 2008 1 19 54484 -0.1070 0.3116 -0.28664 2008 1 20 54485 -0.1079 0.3143 -0.28691 2008 1 21 54486 -0.1087 0.3170 -0.28718 2008 1 22 54487 -0.1095 0.3197 -0.28758 2008 1 23 54488 -0.1102 0.3224 -0.28819 2008 1 24 54489 -0.1109 0.3252 -0.28903 2008 1 25 54490 -0.1115 0.3279 -0.29005 2008 1 26 54491 -0.1121 0.3307 -0.29116 2008 1 27 54492 -0.1127 0.3335 -0.29226 2008 1 28 54493 -0.1132 0.3362 -0.29327 2008 1 29 54494 -0.1137 0.3390 -0.29413 2008 1 30 54495 -0.1141 0.3418 -0.29483 2008 1 31 54496 -0.1145 0.3446 -0.29536 2008 2 1 54497 -0.1148 0.3474 -0.29573 2008 2 2 54498 -0.1151 0.3503 -0.29599 2008 2 3 54499 -0.1153 0.3531 -0.29620 2008 2 4 54500 -0.1155 0.3559 -0.29643 2008 2 5 54501 -0.1156 0.3587 -0.29678 2008 2 6 54502 -0.1157 0.3615 -0.29733 2008 2 7 54503 -0.1157 0.3644 -0.29813 2008 2 8 54504 -0.1157 0.3672 -0.29920 2008 2 9 54505 -0.1157 0.3700 -0.30052 2008 2 10 54506 -0.1155 0.3728 -0.30198 2008 2 11 54507 -0.1154 0.3757 -0.30346 2008 2 12 54508 -0.1152 0.3785 -0.30483 2008 2 13 54509 -0.1150 0.3813 -0.30600 2008 2 14 54510 -0.1147 0.3841 -0.30691 2008 2 15 54511 -0.1143 0.3869 -0.30760 2008 2 16 54512 -0.1139 0.3897 -0.30813 2008 2 17 54513 -0.1135 0.3925 -0.30862 2008 2 18 54514 -0.1130 0.3953 -0.30921 2008 2 19 54515 -0.1125 0.3981 -0.30999 2008 2 20 54516 -0.1119 0.4009 -0.31099 2008 2 21 54517 -0.1113 0.4036 -0.31221 2008 2 22 54518 -0.1106 0.4064 -0.31358 2008 2 23 54519 -0.1099 0.4091 -0.31499 2008 2 24 54520 -0.1091 0.4119 -0.31635 2008 2 25 54521 -0.1083 0.4146 -0.31759 2008 2 26 54522 -0.1074 0.4173 -0.31866 2008 2 27 54523 -0.1065 0.4200 -0.31956 2008 2 28 54524 -0.1056 0.4227 -0.32028 2008 2 29 54525 -0.1046 0.4253 -0.32087 2008 3 1 54526 -0.1036 0.4280 -0.32139 2008 3 2 54527 -0.1025 0.4306 -0.32190 2008 3 3 54528 -0.1013 0.4332 -0.32249 2008 3 4 54529 -0.1002 0.4358 -0.32323 2008 3 5 54530 -0.0990 0.4384 -0.32422 2008 3 6 54531 -0.0977 0.4410 -0.32548 2008 3 7 54532 -0.0964 0.4435 -0.32702 2008 3 8 54533 -0.0950 0.4460 -0.32877 2008 3 9 54534 -0.0936 0.4485 -0.33060 2008 3 10 54535 -0.0922 0.4510 -0.33237 2008 3 11 54536 -0.0907 0.4535 -0.33394 2008 3 12 54537 -0.0892 0.4559 -0.33523 2008 3 13 54538 -0.0877 0.4583 -0.33627 2008 3 14 54539 -0.0861 0.4607 -0.33712 2008 3 15 54540 -0.0844 0.4631 -0.33791 2008 3 16 54541 -0.0827 0.4654 -0.33876 2008 3 17 54542 -0.0810 0.4677 -0.33979 2008 3 18 54543 -0.0793 0.4700 -0.34103 2008 3 19 54544 -0.0775 0.4722 -0.34249 2008 3 20 54545 -0.0756 0.4745 -0.34412 2008 3 21 54546 -0.0737 0.4767 -0.34583 2008 3 22 54547 -0.0718 0.4788 -0.34754 2008 3 23 54548 -0.0699 0.4810 -0.34915 2008 3 24 54549 -0.0679 0.4831 -0.35061 2008 3 25 54550 -0.0659 0.4851 -0.35188 2008 3 26 54551 -0.0638 0.4872 -0.35297 2008 3 27 54552 -0.0617 0.4892 -0.35389 2008 3 28 54553 -0.0596 0.4912 -0.35471 2008 3 29 54554 -0.0574 0.4931 -0.35549 2008 3 30 54555 -0.0552 0.4951 -0.35630 2008 3 31 54556 -0.0530 0.4969 -0.35717 2008 4 1 54557 -0.0508 0.4988 -0.35824 2008 4 2 54558 -0.0485 0.5006 -0.35955 2008 4 3 54559 -0.0461 0.5024 -0.36113 2008 4 4 54560 -0.0438 0.5041 -0.36296 2008 4 5 54561 -0.0414 0.5058 -0.36493 2008 4 6 54562 -0.0390 0.5075 -0.36690 2008 4 7 54563 -0.0365 0.5091 -0.36872 2008 4 8 54564 -0.0341 0.5107 -0.37027 2008 4 9 54565 -0.0316 0.5123 -0.37152 2008 4 10 54566 -0.0291 0.5138 -0.37253 2008 4 11 54567 -0.0265 0.5153 -0.37340 2008 4 12 54568 -0.0239 0.5167 -0.37429 2008 4 13 54569 -0.0213 0.5181 -0.37530 2008 4 14 54570 -0.0187 0.5195 -0.37649 2008 4 15 54571 -0.0161 0.5208 -0.37788 2008 4 16 54572 -0.0134 0.5220 -0.37942 2008 4 17 54573 -0.0107 0.5233 -0.38103 2008 4 18 54574 -0.0080 0.5245 -0.38264 2008 4 19 54575 -0.0052 0.5256 -0.38417 2008 4 20 54576 -0.0025 0.5267 -0.38556 2008 4 21 54577 0.0003 0.5278 -0.38676 2008 4 22 54578 0.0031 0.5288 -0.38775 2008 4 23 54579 0.0059 0.5298 -0.38857 2008 4 24 54580 0.0087 0.5307 -0.38926 2008 4 25 54581 0.0116 0.5316 -0.38986 2008 4 26 54582 0.0144 0.5325 -0.39047 2008 4 27 54583 0.0173 0.5333 -0.39114 2008 4 28 54584 0.0202 0.5340 -0.39195 2008 4 29 54585 0.0231 0.5348 -0.39297 2008 4 30 54586 0.0260 0.5354 -0.39422 2008 5 1 54587 0.0289 0.5361 -0.39570 2008 5 2 54588 0.0319 0.5366 -0.39735 2008 5 3 54589 0.0348 0.5372 -0.39907 2008 5 4 54590 0.0378 0.5377 -0.40071 2008 5 5 54591 0.0407 0.5381 -0.40212 2008 5 6 54592 0.0437 0.5385 -0.40324 2008 5 7 54593 0.0467 0.5389 -0.40407 2008 5 8 54594 0.0497 0.5392 -0.40470 2008 5 9 54595 0.0527 0.5394 -0.40528 2008 5 10 54596 0.0557 0.5396 -0.40595 2008 5 11 54597 0.0587 0.5398 -0.40679 2008 5 12 54598 0.0617 0.5399 -0.40781 2008 5 13 54599 0.0647 0.5400 -0.40898 2008 5 14 54600 0.0677 0.5400 -0.41022 2008 5 15 54601 0.0707 0.5400 -0.41145 2008 5 16 54602 0.0737 0.5400 -0.41259 2008 5 17 54603 0.0767 0.5398 -0.41359 2008 5 18 54604 0.0797 0.5397 -0.41441 2008 5 19 54605 0.0828 0.5395 -0.41502 2008 5 20 54606 0.0858 0.5392 -0.41544 2008 5 21 54607 0.0888 0.5389 -0.41571 2008 5 22 54608 0.0918 0.5386 -0.41588 2008 5 23 54609 0.0947 0.5382 -0.41602 2008 5 24 54610 0.0977 0.5378 -0.41622 2008 5 25 54611 0.1007 0.5373 -0.41653 2008 5 26 54612 0.1037 0.5368 -0.41701 2008 5 27 54613 0.1066 0.5362 -0.41769 2008 5 28 54614 0.1096 0.5356 -0.41858 2008 5 29 54615 0.1125 0.5349 -0.41964 2008 5 30 54616 0.1155 0.5342 -0.42080 2008 5 31 54617 0.1184 0.5335 -0.42193 2008 6 1 54618 0.1213 0.5327 -0.42291 2008 6 2 54619 0.1242 0.5319 -0.42363 2008 6 3 54620 0.1271 0.5310 -0.42405 2008 6 4 54621 0.1299 0.5300 -0.42424 2008 6 5 54622 0.1328 0.5291 -0.42432 2008 6 6 54623 0.1356 0.5281 -0.42444 2008 6 7 54624 0.1384 0.5270 -0.42471 2008 6 8 54625 0.1412 0.5259 -0.42517 2008 6 9 54626 0.1440 0.5247 -0.42579 2008 6 10 54627 0.1468 0.5236 -0.42650 2008 6 11 54628 0.1495 0.5223 -0.42719 2008 6 12 54629 0.1523 0.5211 -0.42779 2008 6 13 54630 0.1550 0.5197 -0.42821 2008 6 14 54631 0.1576 0.5184 -0.42844 2008 6 15 54632 0.1603 0.5170 -0.42844 2008 6 16 54633 0.1629 0.5156 -0.42822 2008 6 17 54634 0.1655 0.5141 -0.42783 2008 6 18 54635 0.1681 0.5126 -0.42731 2008 6 19 54636 0.1707 0.5110 -0.42675 2008 6 20 54637 0.1732 0.5094 -0.42624 2008 6 21 54638 0.1757 0.5078 -0.42586 2008 6 22 54639 0.1782 0.5061 -0.42567 2008 6 23 54640 0.1806 0.5044 -0.42574 2008 6 24 54641 0.1831 0.5027 -0.42604 2008 6 25 54642 0.1855 0.5009 -0.42657 2008 6 26 54643 0.1878 0.4990 -0.42724 2008 6 27 54644 0.1902 0.4972 -0.42795 2008 6 28 54645 0.1925 0.4953 -0.42857 2008 6 29 54646 0.1947 0.4934 -0.42901 2008 6 30 54647 0.1970 0.4914 -0.42918 2008 7 1 54648 0.1992 0.4894 -0.42911 2008 7 2 54649 0.2013 0.4874 -0.42888 2008 7 3 54650 0.2035 0.4853 -0.42863 2008 7 4 54651 0.2056 0.4832 -0.42850 2008 7 5 54652 0.2076 0.4811 -0.42858 2008 7 6 54653 0.2097 0.4790 -0.42888 2008 7 7 54654 0.2116 0.4768 -0.42934 2008 7 8 54655 0.2136 0.4746 -0.42986 2008 7 9 54656 0.2155 0.4723 -0.43034 2008 7 10 54657 0.2174 0.4700 -0.43070 2008 7 11 54658 0.2192 0.4677 -0.43091 2008 7 12 54659 0.2210 0.4654 -0.43095 2008 7 13 54660 0.2228 0.4630 -0.43083 2008 7 14 54661 0.2245 0.4607 -0.43056 2008 7 15 54662 0.2262 0.4582 -0.43018 2008 7 16 54663 0.2278 0.4558 -0.42976 2008 7 17 54664 0.2294 0.4533 -0.42936 2008 7 18 54665 0.2310 0.4509 -0.42907 2008 7 19 54666 0.2325 0.4484 -0.42894 2008 7 20 54667 0.2340 0.4458 -0.42898 2008 7 21 54668 0.2354 0.4433 -0.42923 2008 7 22 54669 0.2368 0.4407 -0.42974 2008 7 23 54670 0.2381 0.4381 -0.43050 2008 7 24 54671 0.2394 0.4355 -0.43133 2008 7 25 54672 0.2407 0.4328 -0.43209 2008 7 26 54673 0.2419 0.4302 -0.43269 2008 7 27 54674 0.2431 0.4275 -0.43304 2008 7 28 54675 0.2442 0.4248 -0.43321 2008 7 29 54676 0.2453 0.4221 -0.43326 2008 7 30 54677 0.2463 0.4194 -0.43326 2008 7 31 54678 0.2473 0.4167 -0.43333 2008 8 1 54679 0.2482 0.4139 -0.43348 2008 8 2 54680 0.2491 0.4112 -0.43379 2008 8 3 54681 0.2499 0.4084 -0.43429 2008 8 4 54682 0.2507 0.4056 -0.43488 2008 8 5 54683 0.2515 0.4028 -0.43542 2008 8 6 54684 0.2522 0.4000 -0.43587 2008 8 7 54685 0.2528 0.3972 -0.43621 2008 8 8 54686 0.2534 0.3943 -0.43636 2008 8 9 54687 0.2540 0.3915 -0.43629 2008 8 10 54688 0.2545 0.3887 -0.43602 2008 8 11 54689 0.2549 0.3858 -0.43557 2008 8 12 54690 0.2554 0.3829 -0.43505 2008 8 13 54691 0.2557 0.3801 -0.43452 2008 8 14 54692 0.2560 0.3772 -0.43408 2008 8 15 54693 0.2563 0.3743 -0.43380 2008 8 16 54694 0.2565 0.3715 -0.43368 2008 8 17 54695 0.2567 0.3686 -0.43380 2008 8 18 54696 0.2568 0.3657 -0.43414 2008 8 19 54697 0.2569 0.3628 -0.43470 2008 8 20 54698 0.2569 0.3599 -0.43534 2008 8 21 54699 0.2568 0.3570 -0.43593 2008 8 22 54700 0.2568 0.3542 -0.43637 2008 8 23 54701 0.2566 0.3513 -0.43666 2008 8 24 54702 0.2564 0.3484 -0.43677 2008 8 25 54703 0.2562 0.3455 -0.43675 2008 8 26 54704 0.2559 0.3427 -0.43670 2008 8 27 54705 0.2556 0.3398 -0.43669 2008 8 28 54706 0.2552 0.3370 -0.43684 2008 8 29 54707 0.2548 0.3341 -0.43728 2008 8 30 54708 0.2543 0.3313 -0.43797 2008 8 31 54709 0.2538 0.3284 -0.43894 2008 9 1 54710 0.2533 0.3256 -0.44008 2008 9 2 54711 0.2526 0.3228 -0.44123 2008 9 3 54712 0.2520 0.3200 -0.44227 2008 9 4 54713 0.2513 0.3172 -0.44308 2008 9 5 54714 0.2505 0.3144 -0.44359 2008 9 6 54715 0.2497 0.3116 -0.44385 2008 9 7 54716 0.2488 0.3089 -0.44390 2008 9 8 54717 0.2479 0.3061 -0.44380 2008 9 9 54718 0.2470 0.3034 -0.44362 2008 9 10 54719 0.2460 0.3007 -0.44343 2008 9 11 54720 0.2450 0.2980 -0.44330 2008 9 12 54721 0.2439 0.2953 -0.44338 2008 9 13 54722 0.2427 0.2927 -0.44373 2008 9 14 54723 0.2416 0.2900 -0.44435 2008 9 15 54724 0.2403 0.2874 -0.44514 2008 9 16 54725 0.2391 0.2848 -0.44607 2008 9 17 54726 0.2378 0.2822 -0.44703 2008 9 18 54727 0.2364 0.2797 -0.44786 2008 9 19 54728 0.2350 0.2771 -0.44848 2008 9 20 54729 0.2336 0.2746 -0.44891 2008 9 21 54730 0.2321 0.2721 -0.44924 2008 9 22 54731 0.2305 0.2696 -0.44949 2008 9 23 54732 0.2290 0.2672 -0.44970 2008 9 24 54733 0.2274 0.2648 -0.44999 2008 9 25 54734 0.2257 0.2624 -0.45046 2008 9 26 54735 0.2240 0.2600 -0.45108 2008 9 27 54736 0.2223 0.2577 -0.45186 2008 9 28 54737 0.2205 0.2554 -0.45278 2008 9 29 54738 0.2187 0.2531 -0.45378 2008 9 30 54739 0.2168 0.2508 -0.45473 2008 10 1 54740 0.2149 0.2486 -0.45553 2008 10 2 54741 0.2130 0.2464 -0.45615 2008 10 3 54742 0.2110 0.2442 -0.45659 2008 10 4 54743 0.2090 0.2421 -0.45688 2008 10 5 54744 0.2070 0.2400 -0.45703 2008 10 6 54745 0.2049 0.2379 -0.45706 2008 10 7 54746 0.2028 0.2359 -0.45710 2008 10 8 54747 0.2007 0.2339 -0.45724 2008 10 9 54748 0.1985 0.2319 -0.45752 2008 10 10 54749 0.1963 0.2300 -0.45802 2008 10 11 54750 0.1940 0.2280 -0.45877 2008 10 12 54751 0.1917 0.2262 -0.45976 2008 10 13 54752 0.1894 0.2244 -0.46096 2008 10 14 54753 0.1871 0.2226 -0.46224 2008 10 15 54754 0.1847 0.2208 -0.46345 2008 10 16 54755 0.1823 0.2191 -0.46445 2008 10 17 54756 0.1799 0.2174 -0.46518 2008 10 18 54757 0.1774 0.2158 -0.46558 2008 10 19 54758 0.1749 0.2141 -0.46585 2008 10 20 54759 0.1724 0.2126 -0.46612 2008 10 21 54760 0.1699 0.2111 -0.46652 2008 10 22 54761 0.1673 0.2096 -0.46715 2008 10 23 54762 0.1647 0.2081 -0.46798 2008 10 24 54763 0.1621 0.2067 -0.46912 2008 10 25 54764 0.1594 0.2054 -0.47051 2008 10 26 54765 0.1568 0.2040 -0.47206 2008 10 27 54766 0.1541 0.2027 -0.47364 2008 10 28 54767 0.1514 0.2015 -0.47514 2008 10 29 54768 0.1486 0.2003 -0.47651 2008 10 30 54769 0.1459 0.1992 -0.47771 2008 10 31 54770 0.1431 0.1980 -0.47872 2008 11 1 54771 0.1403 0.1970 -0.47962 2008 11 2 54772 0.1375 0.1960 -0.48050 2008 11 3 54773 0.1347 0.1950 -0.48138 2008 11 4 54774 0.1318 0.1940 -0.48236 2008 11 5 54775 0.1290 0.1932 -0.48349 2008 11 6 54776 0.1261 0.1923 -0.48484 2008 11 7 54777 0.1232 0.1915 -0.48642 2008 11 8 54778 0.1203 0.1907 -0.48822 2008 11 9 54779 0.1174 0.1900 -0.49021 2008 11 10 54780 0.1145 0.1894 -0.49231 2008 11 11 54781 0.1115 0.1888 -0.49440 2008 11 12 54782 0.1086 0.1882 -0.49635 2008 11 13 54783 0.1056 0.1877 -0.49809 2008 11 14 54784 0.1027 0.1872 -0.49959 2008 11 15 54785 0.0997 0.1867 -0.50085 2008 11 16 54786 0.0967 0.1863 -0.50203 2008 11 17 54787 0.0937 0.1860 -0.50326 2008 11 18 54788 0.0907 0.1857 -0.50460 2008 11 19 54789 0.0877 0.1855 -0.50613 2008 11 20 54790 0.0847 0.1853 -0.50785 2008 11 21 54791 0.0817 0.1851 -0.50967 2008 11 22 54792 0.0787 0.1850 -0.51146 2008 11 23 54793 0.0757 0.1849 -0.51317 2008 11 24 54794 0.0727 0.1849 -0.51480 2008 11 25 54795 0.0697 0.1849 -0.51615 2008 11 26 54796 0.0667 0.1850 -0.51728 2008 11 27 54797 0.0637 0.1851 -0.51822 2008 11 28 54798 0.0607 0.1853 -0.51898 2008 11 29 54799 0.0576 0.1855 -0.51956 2008 11 30 54800 0.0546 0.1858 -0.52013 2008 12 1 54801 0.0517 0.1861 -0.52069 2008 12 2 54802 0.0487 0.1865 -0.52131 2008 12 3 54803 0.0457 0.1869 -0.52206 2008 12 4 54804 0.0427 0.1873 -0.52298 2008 12 5 54805 0.0397 0.1878 -0.52407 2008 12 6 54806 0.0368 0.1884 -0.52528 2008 12 7 54807 0.0338 0.1890 -0.52669 2008 12 8 54808 0.0309 0.1896 -0.52814 2008 12 9 54809 0.0280 0.1903 -0.52955 2008 12 10 54810 0.0250 0.1910 -0.53080 2008 12 11 54811 0.0221 0.1918 -0.53182 2008 12 12 54812 0.0192 0.1926 -0.53263 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) 54426 -62.79 .18 -3.63 .13 54427 -62.93 .18 -3.69 .13 54428 -62.64 .16 -3.94 .14 54429 -62.05 .16 -4.08 .34 54430 -61.60 .16 -3.95 .34 54431 -61.53 .16 -3.73 .34 54432 -61.61 .40 -3.67 .11 54433 -61.54 .40 -3.78 .11 54434 -61.41 .40 -3.77 .11 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 54426 -0.112 0.072 -0.012 0.130 54427 -0.105 0.072 -0.020 0.130 54428 -0.105 0.064 -0.001 0.140 54429 -0.116 0.064 -0.003 0.340 54430 -0.105 0.064 -0.055 0.340 54431 -0.065 0.064 -0.098 0.340 54432 -0.031 0.159 -0.069 0.110 54433 -0.017 0.159 -0.041 0.110 54434 -0.016 0.159 -0.029 0.110 The IERS Conventions recommended software to predict celestial pole offsets is available at ftp://maia.usno.navy.mil/conventions/chapter5/ ceppred.f and software for the calculation of the dX and dY with respect to IAU2000A Nutation/Precession Theory can be found at the web site in section chapter 5.