********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 29 April 2010 Vol. XXIII No. 017 ______________________________________________________________________ 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 = +0.0 seconds beginning 11 March 2010 at 0000 UTC Beginning 1 January 2009: TAI-UTC(BIPM) = 34.000 000 seconds ********************************************************************** * This Bulletin A should replace the Bulletin sent in an email * * from ser7@usno.navy.mil earlier today (4/29/2010). That * * Bulletin A had only 6 days of COMBINED EO PARAMETERS; this * * Bulletin A has 7 days, which is the correct number. * ********************************************************************** ________________________________________________________________________ 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 4 23 55309 -.06991 .00010 0.37179 .00009 -0.010971 0.000009 10 4 24 55310 -.07029 .00010 0.37405 .00009 -0.012739 0.000011 10 4 25 55311 -.07076 .00010 0.37629 .00009 -0.014613 0.000012 10 4 26 55312 -.07109 .00010 0.37854 .00009 -0.016485 0.000012 10 4 27 55313 -.07088 .00009 0.38094 .00009 -0.018286 0.000012 10 4 28 55314 -.07073 .00009 0.38339 .00009 -0.019923 0.000013 10 4 29 55315 -.07124 .00009 0.38572 .00009 -0.021289 0.000055 _______________________________________________________________________ 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 = 0.0742 - 0.0550 cos A + 0.1037 sin A - 0.0842 cos C - 0.0578 sin C y = 0.3505 + 0.0937 cos A + 0.0482 sin A - 0.0578 cos C + 0.0842 sin C UT1-UTC = 0.0134 - 0.00086 (MJD - 55323) - (UT2-UT1) where A = 2*pi*(MJD-55315)/365.25 and C = 2*pi*(MJD-55315)/435. TAI-UTC(MJD 55316) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55315)**0.80 S t = 0.00025 (MJD-55315)**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 4 30 55316 -0.0708 0.3878 -0.02237 2010 5 1 55317 -0.0708 0.3898 -0.02323 2010 5 2 55318 -0.0704 0.3919 -0.02394 2010 5 3 55319 -0.0698 0.3939 -0.02459 2010 5 4 55320 -0.0689 0.3961 -0.02524 2010 5 5 55321 -0.0680 0.3983 -0.02595 2010 5 6 55322 -0.0670 0.4006 -0.02676 2010 5 7 55323 -0.0659 0.4028 -0.02768 2010 5 8 55324 -0.0648 0.4051 -0.02868 2010 5 9 55325 -0.0637 0.4073 -0.02976 2010 5 10 55326 -0.0625 0.4096 -0.03089 2010 5 11 55327 -0.0612 0.4118 -0.03204 2010 5 12 55328 -0.0600 0.4140 -0.03314 2010 5 13 55329 -0.0586 0.4162 -0.03411 2010 5 14 55330 -0.0573 0.4183 -0.03492 2010 5 15 55331 -0.0559 0.4205 -0.03559 2010 5 16 55332 -0.0545 0.4226 -0.03619 2010 5 17 55333 -0.0531 0.4247 -0.03679 2010 5 18 55334 -0.0516 0.4268 -0.03750 2010 5 19 55335 -0.0501 0.4288 -0.03839 2010 5 20 55336 -0.0486 0.4308 -0.03948 2010 5 21 55337 -0.0470 0.4329 -0.04073 2010 5 22 55338 -0.0454 0.4348 -0.04208 2010 5 23 55339 -0.0438 0.4368 -0.04343 2010 5 24 55340 -0.0421 0.4387 -0.04464 2010 5 25 55341 -0.0405 0.4406 -0.04565 2010 5 26 55342 -0.0388 0.4425 -0.04639 2010 5 27 55343 -0.0370 0.4443 -0.04689 2010 5 28 55344 -0.0353 0.4461 -0.04717 2010 5 29 55345 -0.0335 0.4479 -0.04731 2010 5 30 55346 -0.0317 0.4497 -0.04737 2010 5 31 55347 -0.0298 0.4514 -0.04744 2010 6 1 55348 -0.0280 0.4531 -0.04759 2010 6 2 55349 -0.0261 0.4548 -0.04783 2010 6 3 55350 -0.0242 0.4564 -0.04816 2010 6 4 55351 -0.0222 0.4580 -0.04858 2010 6 5 55352 -0.0203 0.4596 -0.04906 2010 6 6 55353 -0.0183 0.4612 -0.04957 2010 6 7 55354 -0.0163 0.4627 -0.05005 2010 6 8 55355 -0.0143 0.4642 -0.05046 2010 6 9 55356 -0.0122 0.4656 -0.05075 2010 6 10 55357 -0.0102 0.4670 -0.05090 2010 6 11 55358 -0.0081 0.4684 -0.05092 2010 6 12 55359 -0.0060 0.4698 -0.05084 2010 6 13 55360 -0.0039 0.4711 -0.05076 2010 6 14 55361 -0.0018 0.4724 -0.05077 2010 6 15 55362 0.0004 0.4737 -0.05097 2010 6 16 55363 0.0025 0.4749 -0.05141 2010 6 17 55364 0.0047 0.4761 -0.05205 2010 6 18 55365 0.0069 0.4772 -0.05283 2010 6 19 55366 0.0091 0.4783 -0.05362 2010 6 20 55367 0.0113 0.4794 -0.05431 2010 6 21 55368 0.0136 0.4805 -0.05481 2010 6 22 55369 0.0158 0.4815 -0.05510 2010 6 23 55370 0.0181 0.4824 -0.05516 2010 6 24 55371 0.0203 0.4834 -0.05503 2010 6 25 55372 0.0226 0.4843 -0.05477 2010 6 26 55373 0.0249 0.4852 -0.05446 2010 6 27 55374 0.0272 0.4860 -0.05417 2010 6 28 55375 0.0295 0.4868 -0.05397 2010 6 29 55376 0.0318 0.4876 -0.05387 2010 6 30 55377 0.0341 0.4883 -0.05389 2010 7 1 55378 0.0365 0.4890 -0.05402 2010 7 2 55379 0.0388 0.4896 -0.05422 2010 7 3 55380 0.0411 0.4902 -0.05444 2010 7 4 55381 0.0435 0.4908 -0.05465 2010 7 5 55382 0.0458 0.4914 -0.05479 2010 7 6 55383 0.0482 0.4919 -0.05483 2010 7 7 55384 0.0505 0.4923 -0.05473 2010 7 8 55385 0.0529 0.4928 -0.05450 2010 7 9 55386 0.0553 0.4932 -0.05415 2010 7 10 55387 0.0576 0.4935 -0.05375 2010 7 11 55388 0.0600 0.4938 -0.05342 2010 7 12 55389 0.0623 0.4941 -0.05325 2010 7 13 55390 0.0647 0.4944 -0.05333 2010 7 14 55391 0.0671 0.4946 -0.05367 2010 7 15 55392 0.0694 0.4948 -0.05420 2010 7 16 55393 0.0718 0.4949 -0.05481 2010 7 17 55394 0.0741 0.4950 -0.05535 2010 7 18 55395 0.0765 0.4951 -0.05572 2010 7 19 55396 0.0788 0.4951 -0.05584 2010 7 20 55397 0.0812 0.4951 -0.05571 2010 7 21 55398 0.0835 0.4950 -0.05538 2010 7 22 55399 0.0858 0.4950 -0.05492 2010 7 23 55400 0.0881 0.4949 -0.05439 2010 7 24 55401 0.0904 0.4947 -0.05389 2010 7 25 55402 0.0927 0.4945 -0.05347 2010 7 26 55403 0.0950 0.4943 -0.05316 2010 7 27 55404 0.0973 0.4940 -0.05299 2010 7 28 55405 0.0996 0.4937 -0.05295 2010 7 29 55406 0.1019 0.4934 -0.05301 2010 7 30 55407 0.1041 0.4930 -0.05312 2010 7 31 55408 0.1064 0.4926 -0.05323 2010 8 1 55409 0.1086 0.4922 -0.05330 2010 8 2 55410 0.1108 0.4917 -0.05329 2010 8 3 55411 0.1130 0.4912 -0.05316 2010 8 4 55412 0.1152 0.4907 -0.05290 2010 8 5 55413 0.1174 0.4901 -0.05254 2010 8 6 55414 0.1195 0.4895 -0.05213 2010 8 7 55415 0.1217 0.4889 -0.05175 2010 8 8 55416 0.1238 0.4882 -0.05150 2010 8 9 55417 0.1259 0.4875 -0.05150 2010 8 10 55418 0.1281 0.4868 -0.05178 2010 8 11 55419 0.1301 0.4860 -0.05233 2010 8 12 55420 0.1322 0.4852 -0.05304 2010 8 13 55421 0.1343 0.4844 -0.05376 2010 8 14 55422 0.1363 0.4835 -0.05434 2010 8 15 55423 0.1383 0.4827 -0.05468 2010 8 16 55424 0.1403 0.4817 -0.05479 2010 8 17 55425 0.1423 0.4808 -0.05467 2010 8 18 55426 0.1443 0.4798 -0.05440 2010 8 19 55427 0.1462 0.4788 -0.05407 2010 8 20 55428 0.1481 0.4777 -0.05375 2010 8 21 55429 0.1500 0.4767 -0.05350 2010 8 22 55430 0.1519 0.4756 -0.05338 2010 8 23 55431 0.1537 0.4744 -0.05340 2010 8 24 55432 0.1555 0.4733 -0.05356 2010 8 25 55433 0.1573 0.4721 -0.05384 2010 8 26 55434 0.1591 0.4709 -0.05420 2010 8 27 55435 0.1609 0.4697 -0.05459 2010 8 28 55436 0.1626 0.4684 -0.05496 2010 8 29 55437 0.1643 0.4671 -0.05527 2010 8 30 55438 0.1660 0.4658 -0.05549 2010 8 31 55439 0.1676 0.4645 -0.05560 2010 9 1 55440 0.1692 0.4631 -0.05561 2010 9 2 55441 0.1708 0.4617 -0.05557 2010 9 3 55442 0.1724 0.4603 -0.05553 2010 9 4 55443 0.1739 0.4589 -0.05560 2010 9 5 55444 0.1755 0.4574 -0.05588 2010 9 6 55445 0.1769 0.4559 -0.05643 2010 9 7 55446 0.1784 0.4544 -0.05729 2010 9 8 55447 0.1798 0.4529 -0.05838 2010 9 9 55448 0.1812 0.4514 -0.05959 2010 9 10 55449 0.1826 0.4498 -0.06075 2010 9 11 55450 0.1839 0.4482 -0.06172 2010 9 12 55451 0.1853 0.4466 -0.06243 2010 9 13 55452 0.1865 0.4450 -0.06289 2010 9 14 55453 0.1878 0.4434 -0.06315 2010 9 15 55454 0.1890 0.4417 -0.06331 2010 9 16 55455 0.1902 0.4400 -0.06346 2010 9 17 55456 0.1914 0.4383 -0.06367 2010 9 18 55457 0.1925 0.4366 -0.06399 2010 9 19 55458 0.1936 0.4349 -0.06445 2010 9 20 55459 0.1947 0.4332 -0.06505 2010 9 21 55460 0.1957 0.4314 -0.06577 2010 9 22 55461 0.1967 0.4296 -0.06659 2010 9 23 55462 0.1977 0.4278 -0.06746 2010 9 24 55463 0.1986 0.4260 -0.06832 2010 9 25 55464 0.1995 0.4242 -0.06912 2010 9 26 55465 0.2004 0.4224 -0.06984 2010 9 27 55466 0.2013 0.4206 -0.07045 2010 9 28 55467 0.2021 0.4187 -0.07095 2010 9 29 55468 0.2028 0.4168 -0.07138 2010 9 30 55469 0.2036 0.4150 -0.07180 2010 10 1 55470 0.2043 0.4131 -0.07229 2010 10 2 55471 0.2050 0.4112 -0.07293 2010 10 3 55472 0.2056 0.4093 -0.07381 2010 10 4 55473 0.2062 0.4074 -0.07496 2010 10 5 55474 0.2068 0.4055 -0.07638 2010 10 6 55475 0.2074 0.4035 -0.07798 2010 10 7 55476 0.2079 0.4016 -0.07962 2010 10 8 55477 0.2084 0.3997 -0.08115 2010 10 9 55478 0.2088 0.3977 -0.08246 2010 10 10 55479 0.2092 0.3958 -0.08351 2010 10 11 55480 0.2096 0.3938 -0.08433 2010 10 12 55481 0.2100 0.3919 -0.08499 2010 10 13 55482 0.2103 0.3899 -0.08560 2010 10 14 55483 0.2106 0.3879 -0.08624 2010 10 15 55484 0.2108 0.3860 -0.08696 2010 10 16 55485 0.2110 0.3840 -0.08780 2010 10 17 55486 0.2112 0.3820 -0.08876 2010 10 18 55487 0.2114 0.3801 -0.08985 2010 10 19 55488 0.2115 0.3781 -0.09102 2010 10 20 55489 0.2116 0.3761 -0.09223 2010 10 21 55490 0.2116 0.3741 -0.09345 2010 10 22 55491 0.2116 0.3722 -0.09461 2010 10 23 55492 0.2116 0.3702 -0.09568 2010 10 24 55493 0.2116 0.3682 -0.09664 2010 10 25 55494 0.2115 0.3662 -0.09747 2010 10 26 55495 0.2114 0.3643 -0.09821 2010 10 27 55496 0.2112 0.3623 -0.09889 2010 10 28 55497 0.2110 0.3604 -0.09960 2010 10 29 55498 0.2108 0.3584 -0.10040 2010 10 30 55499 0.2106 0.3565 -0.10139 2010 10 31 55500 0.2103 0.3545 -0.10259 2010 11 1 55501 0.2100 0.3526 -0.10401 2010 11 2 55502 0.2097 0.3506 -0.10560 2010 11 3 55503 0.2093 0.3487 -0.10725 2010 11 4 55504 0.2089 0.3468 -0.10883 2010 11 5 55505 0.2085 0.3449 -0.11024 2010 11 6 55506 0.2081 0.3430 -0.11139 2010 11 7 55507 0.2076 0.3411 -0.11228 2010 11 8 55508 0.2071 0.3392 -0.11296 2010 11 9 55509 0.2065 0.3373 -0.11352 2010 11 10 55510 0.2059 0.3355 -0.11404 2010 11 11 55511 0.2053 0.3336 -0.11460 2010 11 12 55512 0.2047 0.3318 -0.11522 2010 11 13 55513 0.2040 0.3299 -0.11594 2010 11 14 55514 0.2034 0.3281 -0.11676 2010 11 15 55515 0.2026 0.3263 -0.11765 2010 11 16 55516 0.2019 0.3245 -0.11860 2010 11 17 55517 0.2011 0.3227 -0.11956 2010 11 18 55518 0.2003 0.3210 -0.12050 2010 11 19 55519 0.1995 0.3192 -0.12137 2010 11 20 55520 0.1986 0.3175 -0.12213 2010 11 21 55521 0.1978 0.3158 -0.12278 2010 11 22 55522 0.1969 0.3141 -0.12332 2010 11 23 55523 0.1959 0.3124 -0.12380 2010 11 24 55524 0.1950 0.3107 -0.12427 2010 11 25 55525 0.1940 0.3090 -0.12481 2010 11 26 55526 0.1930 0.3074 -0.12549 2010 11 27 55527 0.1920 0.3057 -0.12636 2010 11 28 55528 0.1909 0.3041 -0.12742 2010 11 29 55529 0.1899 0.3025 -0.12863 2010 11 30 55530 0.1888 0.3010 -0.12991 2010 12 1 55531 0.1876 0.2994 -0.13117 2010 12 2 55532 0.1865 0.2979 -0.13235 2010 12 3 55533 0.1853 0.2964 -0.13337 2010 12 4 55534 0.1841 0.2949 -0.13419 2010 12 5 55535 0.1829 0.2934 -0.13484 2010 12 6 55536 0.1817 0.2919 -0.13536 2010 12 7 55537 0.1805 0.2905 -0.13586 2010 12 8 55538 0.1792 0.2891 -0.13642 2010 12 9 55539 0.1779 0.2877 -0.13709 2010 12 10 55540 0.1766 0.2863 -0.13787 2010 12 11 55541 0.1753 0.2849 -0.13878 2010 12 12 55542 0.1740 0.2836 -0.13979 2010 12 13 55543 0.1726 0.2823 -0.14077 2010 12 14 55544 0.1712 0.2810 -0.14167 2010 12 15 55545 0.1698 0.2798 -0.14246 2010 12 16 55546 0.1684 0.2785 -0.14321 2010 12 17 55547 0.1670 0.2773 -0.14391 2010 12 18 55548 0.1655 0.2761 -0.14449 2010 12 19 55549 0.1641 0.2749 -0.14494 2010 12 20 55550 0.1626 0.2738 -0.14529 2010 12 21 55551 0.1611 0.2727 -0.14565 2010 12 22 55552 0.1596 0.2716 -0.14612 2010 12 23 55553 0.1581 0.2705 -0.14673 2010 12 24 55554 0.1566 0.2694 -0.14752 2010 12 25 55555 0.1551 0.2684 -0.14855 2010 12 26 55556 0.1535 0.2674 -0.14975 2010 12 27 55557 0.1520 0.2664 -0.15102 2010 12 28 55558 0.1504 0.2655 -0.15230 2010 12 29 55559 0.1488 0.2646 -0.15348 2010 12 30 55560 0.1472 0.2637 -0.15447 2010 12 31 55561 0.1456 0.2628 -0.15522 2011 1 1 55562 0.1440 0.2619 -0.15579 2011 1 2 55563 0.1424 0.2611 -0.15623 2011 1 3 55564 0.1408 0.2603 -0.15665 2011 1 4 55565 0.1391 0.2596 -0.15712 2011 1 5 55566 0.1375 0.2588 -0.15769 2011 1 6 55567 0.1358 0.2581 -0.15839 2011 1 7 55568 0.1342 0.2574 -0.15920 2011 1 8 55569 0.1325 0.2567 -0.16010 2011 1 9 55570 0.1309 0.2561 -0.16107 2011 1 10 55571 0.1292 0.2555 -0.16207 2011 1 11 55572 0.1275 0.2549 -0.16306 2011 1 12 55573 0.1258 0.2544 -0.16403 2011 1 13 55574 0.1242 0.2538 -0.16494 2011 1 14 55575 0.1225 0.2533 -0.16575 2011 1 15 55576 0.1208 0.2528 -0.16643 2011 1 16 55577 0.1191 0.2524 -0.16698 2011 1 17 55578 0.1174 0.2520 -0.16747 2011 1 18 55579 0.1157 0.2516 -0.16799 2011 1 19 55580 0.1140 0.2512 -0.16862 2011 1 20 55581 0.1123 0.2509 -0.16944 2011 1 21 55582 0.1106 0.2505 -0.17053 2011 1 22 55583 0.1089 0.2503 -0.17184 2011 1 23 55584 0.1073 0.2500 -0.17330 2011 1 24 55585 0.1056 0.2498 -0.17478 2011 1 25 55586 0.1039 0.2495 -0.17613 2011 1 26 55587 0.1022 0.2494 -0.17730 2011 1 27 55588 0.1005 0.2492 -0.17827 2011 1 28 55589 0.0988 0.2491 -0.17905 2011 1 29 55590 0.0972 0.2490 -0.17972 2011 1 30 55591 0.0955 0.2489 -0.18036 2011 1 31 55592 0.0938 0.2488 -0.18105 2011 2 1 55593 0.0922 0.2488 -0.18182 2011 2 2 55594 0.0905 0.2488 -0.18270 2011 2 3 55595 0.0889 0.2489 -0.18369 2011 2 4 55596 0.0872 0.2489 -0.18478 2011 2 5 55597 0.0856 0.2490 -0.18598 2011 2 6 55598 0.0839 0.2491 -0.18718 2011 2 7 55599 0.0823 0.2492 -0.18837 2011 2 8 55600 0.0807 0.2494 -0.18955 2011 2 9 55601 0.0791 0.2496 -0.19065 2011 2 10 55602 0.0775 0.2498 -0.19161 2011 2 11 55603 0.0759 0.2500 -0.19249 2011 2 12 55604 0.0744 0.2502 -0.19331 2011 2 13 55605 0.0728 0.2505 -0.19412 2011 2 14 55606 0.0712 0.2508 -0.19494 2011 2 15 55607 0.0697 0.2512 -0.19588 2011 2 16 55608 0.0681 0.2515 -0.19695 2011 2 17 55609 0.0666 0.2519 -0.19822 2011 2 18 55610 0.0651 0.2523 -0.19972 2011 2 19 55611 0.0636 0.2527 -0.20141 2011 2 20 55612 0.0621 0.2531 -0.20321 2011 2 21 55613 0.0607 0.2536 -0.20501 2011 2 22 55614 0.0592 0.2541 -0.20669 2011 2 23 55615 0.0577 0.2546 -0.20814 2011 2 24 55616 0.0563 0.2551 -0.20931 2011 2 25 55617 0.0549 0.2557 -0.21024 2011 2 26 55618 0.0535 0.2563 -0.21101 2011 2 27 55619 0.0521 0.2569 -0.21175 2011 2 28 55620 0.0507 0.2575 -0.21252 2011 3 1 55621 0.0494 0.2581 -0.21337 2011 3 2 55622 0.0480 0.2588 -0.21437 2011 3 3 55623 0.0467 0.2595 -0.21551 2011 3 4 55624 0.0454 0.2602 -0.21672 2011 3 5 55625 0.0441 0.2609 -0.21803 2011 3 6 55626 0.0428 0.2616 -0.21937 2011 3 7 55627 0.0416 0.2624 -0.22066 2011 3 8 55628 0.0403 0.2632 -0.22190 2011 3 9 55629 0.0391 0.2640 -0.22305 2011 3 10 55630 0.0379 0.2648 -0.22411 2011 3 11 55631 0.0367 0.2656 -0.22507 2011 3 12 55632 0.0355 0.2665 -0.22593 2011 3 13 55633 0.0344 0.2674 -0.22675 2011 3 14 55634 0.0332 0.2682 -0.22764 2011 3 15 55635 0.0321 0.2691 -0.22869 2011 3 16 55636 0.0310 0.2701 -0.22996 2011 3 17 55637 0.0300 0.2710 -0.23149 2011 3 18 55638 0.0289 0.2720 -0.23328 2011 3 19 55639 0.0279 0.2729 -0.23524 2011 3 20 55640 0.0268 0.2739 -0.23727 2011 3 21 55641 0.0259 0.2749 -0.23929 2011 3 22 55642 0.0249 0.2759 -0.24115 2011 3 23 55643 0.0239 0.2769 -0.24283 2011 3 24 55644 0.0230 0.2780 -0.24431 2011 3 25 55645 0.0221 0.2790 -0.24567 2011 3 26 55646 0.0212 0.2801 -0.24697 2011 3 27 55647 0.0203 0.2812 -0.24830 2011 3 28 55648 0.0195 0.2823 -0.24972 2011 3 29 55649 0.0186 0.2834 -0.25120 2011 3 30 55650 0.0178 0.2845 -0.25279 2011 3 31 55651 0.0171 0.2856 -0.25451 2011 4 1 55652 0.0163 0.2867 -0.25633 2011 4 2 55653 0.0155 0.2879 -0.25815 2011 4 3 55654 0.0148 0.2890 -0.25991 2011 4 4 55655 0.0141 0.2902 -0.26158 2011 4 5 55656 0.0135 0.2914 -0.26313 2011 4 6 55657 0.0128 0.2926 -0.26455 2011 4 7 55658 0.0122 0.2938 -0.26586 2011 4 8 55659 0.0116 0.2950 -0.26705 2011 4 9 55660 0.0110 0.2962 -0.26822 2011 4 10 55661 0.0104 0.2974 -0.26940 2011 4 11 55662 0.0099 0.2986 -0.27068 2011 4 12 55663 0.0094 0.2999 -0.27212 2011 4 13 55664 0.0089 0.3011 -0.27380 2011 4 14 55665 0.0084 0.3024 -0.27574 2011 4 15 55666 0.0079 0.3036 -0.27784 2011 4 16 55667 0.0075 0.3049 -0.28000 2011 4 17 55668 0.0071 0.3061 -0.28214 2011 4 18 55669 0.0067 0.3074 -0.28414 2011 4 19 55670 0.0064 0.3087 -0.28593 2011 4 20 55671 0.0060 0.3100 -0.28747 2011 4 21 55672 0.0057 0.3112 -0.28877 2011 4 22 55673 0.0054 0.3125 -0.28992 2011 4 23 55674 0.0051 0.3138 -0.29106 2011 4 24 55675 0.0049 0.3151 -0.29222 2011 4 25 55676 0.0047 0.3164 -0.29341 2011 4 26 55677 0.0045 0.3177 -0.29460 2011 4 27 55678 0.0043 0.3190 -0.29580 2011 4 28 55679 0.0041 0.3203 -0.29707 2011 4 29 55680 0.0040 0.3216 -0.29837 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) 55296 -62.49 0.29 -9.43 0.34 55297 -62.32 0.28 -9.22 0.10 55298 -62.33 0.15 -9.11 0.34 55299 -62.38 0.28 -9.20 0.16 55300 -62.43 0.20 -9.39 0.12 55301 -62.47 0.20 -9.56 0.12 55302 -62.47 0.20 -9.63 0.12 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55296 -0.228 0.115 -0.160 0.340 55297 -0.225 0.111 -0.091 0.100 55298 -0.223 0.060 -0.040 0.340 55299 -0.211 0.111 -0.025 0.160 55300 -0.193 0.080 -0.016 0.120 55301 -0.166 0.080 -0.034 0.120 55302 -0.131 0.080 -0.065 0.120 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.