********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 31 December 2009 Vol. XXII 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 12 November 2009 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 9 12 25 55190 0.11207 .00009 0.19204 .00009 0.118949 0.000012 9 12 26 55191 0.11038 .00009 0.19179 .00010 0.117805 0.000013 9 12 27 55192 0.10863 .00009 0.19174 .00010 0.116777 0.000010 9 12 28 55193 0.10678 .00009 0.19180 .00009 0.115922 0.000009 9 12 29 55194 0.10482 .00009 0.19182 .00009 0.115293 0.000009 9 12 30 55195 0.10279 .00009 0.19194 .00009 0.114850 0.000048 9 12 31 55196 0.10071 .00010 0.19227 .00009 0.114445 0.000057 _______________________________________________________________________ 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 = 0.0978 - 0.0872 cos A - 0.0905 sin A + 0.0888 cos C - 0.0756 sin C y = 0.3487 - 0.0822 cos A + 0.0743 sin A - 0.0756 cos C - 0.0888 sin C UT1-UTC = 0.1105 - 0.00089 (MJD - 55204) - (UT2-UT1) where A = 2*pi*(MJD-55196)/365.25 and C = 2*pi*(MJD-55196)/435. TAI-UTC(MJD 55197) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55196)**0.80 S t = 0.00025 (MJD-55196)**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 1 1 55197 0.0982 0.1923 0.11394 2010 1 2 55198 0.0958 0.1925 0.11323 2010 1 3 55199 0.0932 0.1925 0.11228 2010 1 4 55200 0.0907 0.1925 0.11110 2010 1 5 55201 0.0881 0.1924 0.10978 2010 1 6 55202 0.0855 0.1923 0.10845 2010 1 7 55203 0.0829 0.1922 0.10725 2010 1 8 55204 0.0803 0.1922 0.10627 2010 1 9 55205 0.0778 0.1922 0.10553 2010 1 10 55206 0.0752 0.1922 0.10502 2010 1 11 55207 0.0727 0.1922 0.10470 2010 1 12 55208 0.0702 0.1923 0.10448 2010 1 13 55209 0.0676 0.1925 0.10429 2010 1 14 55210 0.0651 0.1927 0.10405 2010 1 15 55211 0.0626 0.1929 0.10367 2010 1 16 55212 0.0601 0.1931 0.10312 2010 1 17 55213 0.0576 0.1934 0.10236 2010 1 18 55214 0.0552 0.1938 0.10142 2010 1 19 55215 0.0527 0.1941 0.10035 2010 1 20 55216 0.0502 0.1945 0.09919 2010 1 21 55217 0.0478 0.1950 0.09801 2010 1 22 55218 0.0453 0.1955 0.09690 2010 1 23 55219 0.0429 0.1960 0.09589 2010 1 24 55220 0.0405 0.1965 0.09502 2010 1 25 55221 0.0381 0.1971 0.09432 2010 1 26 55222 0.0358 0.1978 0.09373 2010 1 27 55223 0.0334 0.1984 0.09321 2010 1 28 55224 0.0310 0.1991 0.09262 2010 1 29 55225 0.0287 0.1999 0.09186 2010 1 30 55226 0.0264 0.2006 0.09082 2010 1 31 55227 0.0241 0.2014 0.08950 2010 2 1 55228 0.0218 0.2023 0.08796 2010 2 2 55229 0.0196 0.2032 0.08636 2010 2 3 55230 0.0174 0.2041 0.08485 2010 2 4 55231 0.0151 0.2050 0.08355 2010 2 5 55232 0.0129 0.2060 0.08253 2010 2 6 55233 0.0108 0.2070 0.08178 2010 2 7 55234 0.0086 0.2081 0.08125 2010 2 8 55235 0.0065 0.2092 0.08087 2010 2 9 55236 0.0044 0.2103 0.08054 2010 2 10 55237 0.0023 0.2114 0.08019 2010 2 11 55238 0.0002 0.2126 0.07977 2010 2 12 55239 -0.0018 0.2138 0.07923 2010 2 13 55240 -0.0038 0.2150 0.07854 2010 2 14 55241 -0.0058 0.2163 0.07769 2010 2 15 55242 -0.0077 0.2176 0.07671 2010 2 16 55243 -0.0097 0.2189 0.07564 2010 2 17 55244 -0.0116 0.2203 0.07454 2010 2 18 55245 -0.0135 0.2217 0.07345 2010 2 19 55246 -0.0153 0.2231 0.07244 2010 2 20 55247 -0.0171 0.2245 0.07154 2010 2 21 55248 -0.0189 0.2260 0.07078 2010 2 22 55249 -0.0207 0.2275 0.07014 2010 2 23 55250 -0.0224 0.2290 0.06957 2010 2 24 55251 -0.0241 0.2306 0.06898 2010 2 25 55252 -0.0258 0.2321 0.06824 2010 2 26 55253 -0.0275 0.2337 0.06726 2010 2 27 55254 -0.0291 0.2354 0.06597 2010 2 28 55255 -0.0307 0.2370 0.06440 2010 3 1 55256 -0.0322 0.2387 0.06265 2010 3 2 55257 -0.0337 0.2404 0.06087 2010 3 3 55258 -0.0352 0.2421 0.05923 2010 3 4 55259 -0.0367 0.2439 0.05781 2010 3 5 55260 -0.0381 0.2456 0.05667 2010 3 6 55261 -0.0395 0.2474 0.05577 2010 3 7 55262 -0.0409 0.2492 0.05504 2010 3 8 55263 -0.0422 0.2510 0.05439 2010 3 9 55264 -0.0435 0.2529 0.05374 2010 3 10 55265 -0.0447 0.2548 0.05302 2010 3 11 55266 -0.0460 0.2567 0.05220 2010 3 12 55267 -0.0472 0.2586 0.05122 2010 3 13 55268 -0.0483 0.2605 0.05009 2010 3 14 55269 -0.0494 0.2624 0.04882 2010 3 15 55270 -0.0505 0.2644 0.04743 2010 3 16 55271 -0.0516 0.2664 0.04599 2010 3 17 55272 -0.0526 0.2683 0.04455 2010 3 18 55273 -0.0535 0.2703 0.04317 2010 3 19 55274 -0.0545 0.2724 0.04190 2010 3 20 55275 -0.0554 0.2744 0.04078 2010 3 21 55276 -0.0563 0.2764 0.03978 2010 3 22 55277 -0.0571 0.2785 0.03887 2010 3 23 55278 -0.0579 0.2806 0.03798 2010 3 24 55279 -0.0586 0.2827 0.03700 2010 3 25 55280 -0.0594 0.2847 0.03584 2010 3 26 55281 -0.0601 0.2869 0.03441 2010 3 27 55282 -0.0607 0.2890 0.03270 2010 3 28 55283 -0.0613 0.2911 0.03076 2010 3 29 55284 -0.0619 0.2932 0.02872 2010 3 30 55285 -0.0624 0.2954 0.02673 2010 3 31 55286 -0.0629 0.2975 0.02491 2010 4 1 55287 -0.0634 0.2997 0.02335 2010 4 2 55288 -0.0638 0.3018 0.02205 2010 4 3 55289 -0.0642 0.3040 0.02097 2010 4 4 55290 -0.0645 0.3062 0.02002 2010 4 5 55291 -0.0648 0.3084 0.01911 2010 4 6 55292 -0.0651 0.3105 0.01817 2010 4 7 55293 -0.0654 0.3127 0.01715 2010 4 8 55294 -0.0656 0.3149 0.01602 2010 4 9 55295 -0.0657 0.3171 0.01475 2010 4 10 55296 -0.0658 0.3193 0.01336 2010 4 11 55297 -0.0659 0.3215 0.01186 2010 4 12 55298 -0.0660 0.3237 0.01031 2010 4 13 55299 -0.0660 0.3259 0.00876 2010 4 14 55300 -0.0660 0.3281 0.00727 2010 4 15 55301 -0.0659 0.3303 0.00589 2010 4 16 55302 -0.0658 0.3325 0.00465 2010 4 17 55303 -0.0657 0.3347 0.00358 2010 4 18 55304 -0.0655 0.3369 0.00262 2010 4 19 55305 -0.0653 0.3391 0.00177 2010 4 20 55306 -0.0651 0.3412 0.00088 2010 4 21 55307 -0.0648 0.3434 -0.00014 2010 4 22 55308 -0.0645 0.3456 -0.00136 2010 4 23 55309 -0.0641 0.3478 -0.00282 2010 4 24 55310 -0.0638 0.3499 -0.00448 2010 4 25 55311 -0.0633 0.3521 -0.00627 2010 4 26 55312 -0.0629 0.3542 -0.00806 2010 4 27 55313 -0.0624 0.3564 -0.00972 2010 4 28 55314 -0.0619 0.3585 -0.01116 2010 4 29 55315 -0.0613 0.3606 -0.01234 2010 4 30 55316 -0.0607 0.3627 -0.01328 2010 5 1 55317 -0.0601 0.3648 -0.01404 2010 5 2 55318 -0.0594 0.3669 -0.01472 2010 5 3 55319 -0.0587 0.3690 -0.01538 2010 5 4 55320 -0.0580 0.3711 -0.01611 2010 5 5 55321 -0.0572 0.3732 -0.01692 2010 5 6 55322 -0.0565 0.3752 -0.01785 2010 5 7 55323 -0.0556 0.3773 -0.01889 2010 5 8 55324 -0.0548 0.3793 -0.02003 2010 5 9 55325 -0.0539 0.3813 -0.02122 2010 5 10 55326 -0.0530 0.3833 -0.02241 2010 5 11 55327 -0.0520 0.3853 -0.02356 2010 5 12 55328 -0.0510 0.3872 -0.02461 2010 5 13 55329 -0.0500 0.3892 -0.02551 2010 5 14 55330 -0.0490 0.3911 -0.02625 2010 5 15 55331 -0.0479 0.3930 -0.02685 2010 5 16 55332 -0.0468 0.3950 -0.02736 2010 5 17 55333 -0.0457 0.3968 -0.02788 2010 5 18 55334 -0.0445 0.3987 -0.02850 2010 5 19 55335 -0.0433 0.4006 -0.02930 2010 5 20 55336 -0.0421 0.4024 -0.03030 2010 5 21 55337 -0.0409 0.4042 -0.03150 2010 5 22 55338 -0.0396 0.4060 -0.03280 2010 5 23 55339 -0.0383 0.4078 -0.03411 2010 5 24 55340 -0.0370 0.4095 -0.03532 2010 5 25 55341 -0.0356 0.4112 -0.03633 2010 5 26 55342 -0.0342 0.4130 -0.03710 2010 5 27 55343 -0.0328 0.4146 -0.03762 2010 5 28 55344 -0.0314 0.4163 -0.03795 2010 5 29 55345 -0.0300 0.4180 -0.03816 2010 5 30 55346 -0.0285 0.4196 -0.03833 2010 5 31 55347 -0.0270 0.4212 -0.03854 2010 6 1 55348 -0.0255 0.4228 -0.03883 2010 6 2 55349 -0.0240 0.4243 -0.03922 2010 6 3 55350 -0.0224 0.4258 -0.03973 2010 6 4 55351 -0.0208 0.4273 -0.04033 2010 6 5 55352 -0.0192 0.4288 -0.04099 2010 6 6 55353 -0.0176 0.4303 -0.04166 2010 6 7 55354 -0.0159 0.4317 -0.04230 2010 6 8 55355 -0.0143 0.4331 -0.04286 2010 6 9 55356 -0.0126 0.4345 -0.04329 2010 6 10 55357 -0.0109 0.4359 -0.04357 2010 6 11 55358 -0.0092 0.4372 -0.04371 2010 6 12 55359 -0.0074 0.4385 -0.04374 2010 6 13 55360 -0.0057 0.4398 -0.04375 2010 6 14 55361 -0.0039 0.4410 -0.04385 2010 6 15 55362 -0.0021 0.4422 -0.04412 2010 6 16 55363 -0.0003 0.4434 -0.04461 2010 6 17 55364 0.0015 0.4446 -0.04530 2010 6 18 55365 0.0033 0.4457 -0.04612 2010 6 19 55366 0.0051 0.4468 -0.04695 2010 6 20 55367 0.0070 0.4479 -0.04768 2010 6 21 55368 0.0089 0.4489 -0.04823 2010 6 22 55369 0.0107 0.4500 -0.04853 2010 6 23 55370 0.0126 0.4510 -0.04859 2010 6 24 55371 0.0145 0.4519 -0.04846 2010 6 25 55372 0.0164 0.4529 -0.04819 2010 6 26 55373 0.0184 0.4538 -0.04786 2010 6 27 55374 0.0203 0.4546 -0.04756 2010 6 28 55375 0.0222 0.4555 -0.04732 2010 6 29 55376 0.0242 0.4563 -0.04720 2010 6 30 55377 0.0261 0.4571 -0.04718 2010 7 1 55378 0.0281 0.4578 -0.04726 2010 7 2 55379 0.0301 0.4586 -0.04740 2010 7 3 55380 0.0320 0.4592 -0.04756 2010 7 4 55381 0.0340 0.4599 -0.04770 2010 7 5 55382 0.0360 0.4605 -0.04776 2010 7 6 55383 0.0380 0.4611 -0.04771 2010 7 7 55384 0.0400 0.4617 -0.04753 2010 7 8 55385 0.0420 0.4623 -0.04720 2010 7 9 55386 0.0440 0.4628 -0.04678 2010 7 10 55387 0.0460 0.4632 -0.04632 2010 7 11 55388 0.0480 0.4637 -0.04595 2010 7 12 55389 0.0500 0.4641 -0.04575 2010 7 13 55390 0.0520 0.4645 -0.04581 2010 7 14 55391 0.0540 0.4649 -0.04613 2010 7 15 55392 0.0560 0.4652 -0.04665 2010 7 16 55393 0.0580 0.4655 -0.04723 2010 7 17 55394 0.0600 0.4657 -0.04774 2010 7 18 55395 0.0620 0.4660 -0.04806 2010 7 19 55396 0.0640 0.4662 -0.04814 2010 7 20 55397 0.0660 0.4664 -0.04798 2010 7 21 55398 0.0680 0.4665 -0.04762 2010 7 22 55399 0.0700 0.4666 -0.04715 2010 7 23 55400 0.0720 0.4667 -0.04663 2010 7 24 55401 0.0740 0.4667 -0.04615 2010 7 25 55402 0.0760 0.4668 -0.04578 2010 7 26 55403 0.0779 0.4667 -0.04555 2010 7 27 55404 0.0799 0.4667 -0.04549 2010 7 28 55405 0.0818 0.4666 -0.04560 2010 7 29 55406 0.0838 0.4665 -0.04587 2010 7 30 55407 0.0857 0.4664 -0.04625 2010 7 31 55408 0.0877 0.4662 -0.04669 2010 8 1 55409 0.0896 0.4661 -0.04712 2010 8 2 55410 0.0915 0.4658 -0.04748 2010 8 3 55411 0.0934 0.4656 -0.04774 2010 8 4 55412 0.0953 0.4653 -0.04788 2010 8 5 55413 0.0972 0.4650 -0.04794 2010 8 6 55414 0.0990 0.4647 -0.04796 2010 8 7 55415 0.1009 0.4643 -0.04803 2010 8 8 55416 0.1027 0.4639 -0.04823 2010 8 9 55417 0.1046 0.4635 -0.04864 2010 8 10 55418 0.1064 0.4631 -0.04934 2010 8 11 55419 0.1082 0.4626 -0.05028 2010 8 12 55420 0.1100 0.4621 -0.05138 2010 8 13 55421 0.1117 0.4616 -0.05247 2010 8 14 55422 0.1135 0.4610 -0.05344 2010 8 15 55423 0.1153 0.4604 -0.05417 2010 8 16 55424 0.1170 0.4598 -0.05464 2010 8 17 55425 0.1187 0.4592 -0.05488 2010 8 18 55426 0.1204 0.4585 -0.05498 2010 8 19 55427 0.1221 0.4578 -0.05503 2010 8 20 55428 0.1237 0.4571 -0.05505 2010 8 21 55429 0.1254 0.4564 -0.05513 2010 8 22 55430 0.1270 0.4556 -0.05534 2010 8 23 55431 0.1286 0.4548 -0.05572 2010 8 24 55432 0.1302 0.4540 -0.05628 2010 8 25 55433 0.1318 0.4532 -0.05697 2010 8 26 55434 0.1333 0.4523 -0.05770 2010 8 27 55435 0.1349 0.4515 -0.05842 2010 8 28 55436 0.1364 0.4505 -0.05913 2010 8 29 55437 0.1378 0.4496 -0.05976 2010 8 30 55438 0.1393 0.4487 -0.06023 2010 8 31 55439 0.1408 0.4477 -0.06050 2010 9 1 55440 0.1422 0.4467 -0.06063 2010 9 2 55441 0.1436 0.4457 -0.06071 2010 9 3 55442 0.1450 0.4447 -0.06083 2010 9 4 55443 0.1463 0.4436 -0.06105 2010 9 5 55444 0.1477 0.4425 -0.06146 2010 9 6 55445 0.1490 0.4414 -0.06215 2010 9 7 55446 0.1503 0.4403 -0.06313 2010 9 8 55447 0.1515 0.4392 -0.06434 2010 9 9 55448 0.1528 0.4380 -0.06564 2010 9 10 55449 0.1540 0.4368 -0.06690 2010 9 11 55450 0.1552 0.4357 -0.06803 2010 9 12 55451 0.1564 0.4344 -0.06895 2010 9 13 55452 0.1575 0.4332 -0.06963 2010 9 14 55453 0.1586 0.4320 -0.07013 2010 9 15 55454 0.1597 0.4307 -0.07052 2010 9 16 55455 0.1608 0.4294 -0.07087 2010 9 17 55456 0.1618 0.4282 -0.07126 2010 9 18 55457 0.1629 0.4268 -0.07177 2010 9 19 55458 0.1639 0.4255 -0.07243 2010 9 20 55459 0.1648 0.4242 -0.07324 2010 9 21 55460 0.1658 0.4228 -0.07417 2010 9 22 55461 0.1667 0.4215 -0.07518 2010 9 23 55462 0.1676 0.4201 -0.07621 2010 9 24 55463 0.1684 0.4187 -0.07721 2010 9 25 55464 0.1693 0.4173 -0.07816 2010 9 26 55465 0.1701 0.4159 -0.07902 2010 9 27 55466 0.1708 0.4145 -0.07976 2010 9 28 55467 0.1716 0.4130 -0.08035 2010 9 29 55468 0.1723 0.4116 -0.08080 2010 9 30 55469 0.1730 0.4101 -0.08122 2010 10 1 55470 0.1737 0.4086 -0.08171 2010 10 2 55471 0.1743 0.4072 -0.08237 2010 10 3 55472 0.1749 0.4057 -0.08323 2010 10 4 55473 0.1755 0.4042 -0.08433 2010 10 5 55474 0.1761 0.4027 -0.08566 2010 10 6 55475 0.1766 0.4012 -0.08721 2010 10 7 55476 0.1771 0.3996 -0.08883 2010 10 8 55477 0.1776 0.3981 -0.09033 2010 10 9 55478 0.1781 0.3966 -0.09158 2010 10 10 55479 0.1785 0.3950 -0.09254 2010 10 11 55480 0.1789 0.3935 -0.09322 2010 10 12 55481 0.1792 0.3919 -0.09367 2010 10 13 55482 0.1796 0.3904 -0.09396 2010 10 14 55483 0.1799 0.3888 -0.09424 2010 10 15 55484 0.1802 0.3873 -0.09466 2010 10 16 55485 0.1804 0.3857 -0.09525 2010 10 17 55486 0.1807 0.3841 -0.09598 2010 10 18 55487 0.1809 0.3826 -0.09683 2010 10 19 55488 0.1810 0.3810 -0.09778 2010 10 20 55489 0.1812 0.3794 -0.09878 2010 10 21 55490 0.1813 0.3778 -0.09980 2010 10 22 55491 0.1814 0.3762 -0.10079 2010 10 23 55492 0.1815 0.3747 -0.10169 2010 10 24 55493 0.1815 0.3731 -0.10248 2010 10 25 55494 0.1815 0.3715 -0.10320 2010 10 26 55495 0.1815 0.3699 -0.10384 2010 10 27 55496 0.1814 0.3683 -0.10442 2010 10 28 55497 0.1814 0.3668 -0.10497 2010 10 29 55498 0.1813 0.3652 -0.10557 2010 10 30 55499 0.1812 0.3636 -0.10634 2010 10 31 55500 0.1810 0.3621 -0.10732 2010 11 1 55501 0.1808 0.3605 -0.10856 2010 11 2 55502 0.1806 0.3589 -0.11000 2010 11 3 55503 0.1804 0.3574 -0.11153 2010 11 4 55504 0.1802 0.3558 -0.11302 2010 11 5 55505 0.1799 0.3543 -0.11434 2010 11 6 55506 0.1796 0.3527 -0.11543 2010 11 7 55507 0.1793 0.3512 -0.11629 2010 11 8 55508 0.1789 0.3496 -0.11695 2010 11 9 55509 0.1785 0.3481 -0.11751 2010 11 10 55510 0.1781 0.3466 -0.11802 2010 11 11 55511 0.1777 0.3451 -0.11858 2010 11 12 55512 0.1772 0.3436 -0.11927 2010 11 13 55513 0.1768 0.3421 -0.12009 2010 11 14 55514 0.1763 0.3406 -0.12106 2010 11 15 55515 0.1758 0.3391 -0.12215 2010 11 16 55516 0.1752 0.3376 -0.12324 2010 11 17 55517 0.1747 0.3362 -0.12426 2010 11 18 55518 0.1741 0.3347 -0.12514 2010 11 19 55519 0.1735 0.3333 -0.12587 2010 11 20 55520 0.1728 0.3319 -0.12644 2010 11 21 55521 0.1722 0.3304 -0.12682 2010 11 22 55522 0.1715 0.3290 -0.12704 2010 11 23 55523 0.1708 0.3276 -0.12716 2010 11 24 55524 0.1701 0.3262 -0.12725 2010 11 25 55525 0.1694 0.3249 -0.12740 2010 11 26 55526 0.1686 0.3235 -0.12775 2010 11 27 55527 0.1678 0.3222 -0.12837 2010 11 28 55528 0.1670 0.3208 -0.12920 2010 11 29 55529 0.1662 0.3195 -0.13022 2010 11 30 55530 0.1654 0.3182 -0.13132 2010 12 1 55531 0.1645 0.3169 -0.13236 2010 12 2 55532 0.1637 0.3156 -0.13323 2010 12 3 55533 0.1628 0.3143 -0.13391 2010 12 4 55534 0.1619 0.3131 -0.13449 2010 12 5 55535 0.1609 0.3118 -0.13494 2010 12 6 55536 0.1600 0.3106 -0.13530 2010 12 7 55537 0.1591 0.3094 -0.13565 2010 12 8 55538 0.1581 0.3082 -0.13603 2010 12 9 55539 0.1571 0.3070 -0.13652 2010 12 10 55540 0.1561 0.3059 -0.13709 2010 12 11 55541 0.1551 0.3047 -0.13776 2010 12 12 55542 0.1540 0.3036 -0.13846 2010 12 13 55543 0.1530 0.3025 -0.13915 2010 12 14 55544 0.1519 0.3014 -0.13980 2010 12 15 55545 0.1509 0.3003 -0.14039 2010 12 16 55546 0.1498 0.2992 -0.14087 2010 12 17 55547 0.1487 0.2982 -0.14127 2010 12 18 55548 0.1475 0.2972 -0.14155 2010 12 19 55549 0.1464 0.2962 -0.14172 2010 12 20 55550 0.1453 0.2952 -0.14182 2010 12 21 55551 0.1441 0.2942 -0.14188 2010 12 22 55552 0.1430 0.2932 -0.14202 2010 12 23 55553 0.1418 0.2923 -0.14231 2010 12 24 55554 0.1406 0.2914 -0.14282 2010 12 25 55555 0.1394 0.2905 -0.14359 2010 12 26 55556 0.1382 0.2896 -0.14457 2010 12 27 55557 0.1370 0.2888 -0.14568 2010 12 28 55558 0.1358 0.2879 -0.14682 2010 12 29 55559 0.1346 0.2871 -0.14791 2010 12 30 55560 0.1333 0.2863 -0.14885 2010 12 31 55561 0.1321 0.2855 -0.14957 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) 55174 -65.39 0.17 -5.98 0.34 55175 -65.32 0.17 -5.88 0.34 55176 -65.34 0.17 -5.69 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55174 -0.004 0.068 -0.328 0.340 55175 -0.018 0.068 -0.342 0.340 55176 -0.031 0.068 -0.347 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.