********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 4 October 2007 Vol. XX No. 040 ______________________________________________________________________ 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 ********************************************************************** * As of Bulletin A Vol. XX, No. 040, on 04 October 2007, we have * * incorporated 2.5 additional days of AAM forecasts to the UT1-UTC * * predictions. This change should improve the near-term UT1-UTC * * predictions. * ********************************************************************** ________________________________________________________________________ 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 9 28 54371 .14145 .00009 .21118 .00010 -.183777 .000013 7 9 29 54372 .13869 .00009 .20947 .00010 -.185182 .000009 7 9 30 54373 .13609 .00009 .20783 .00010 -.186302 .000009 7 10 1 54374 .13357 .00009 .20645 .00010 -.187136 .000009 7 10 2 54375 .13062 .00009 .20519 .00009 -.187722 .000009 7 10 3 54376 .12755 .00009 .20396 .00010 -.188215 .000048 7 10 4 54377 .12454 .00009 .20284 .00010 -.188786 .000057 IERS Final Values MJD x y UT1-UTC " " s 7 8 3 54315 .2263 .3291 -.16260 7 8 4 54316 .2260 .3266 -.16337 7 8 5 54317 .2253 .3237 -.16395 7 8 6 54318 .2241 .3210 -.16433 7 8 7 54319 .2228 .3186 -.16436 7 8 8 54320 .2214 .3161 -.16415 7 8 9 54321 .2197 .3135 -.16375 7 8 10 54322 .2181 .3109 -.16329 7 8 11 54323 .2172 .3083 -.16292 7 8 12 54324 .2169 .3057 -.16273 7 8 13 54325 .2167 .3034 -.16276 7 8 14 54326 .2163 .3011 -.16290 7 8 15 54327 .2154 .2991 -.16313 7 8 16 54328 .2142 .2974 -.16342 7 8 17 54329 .2127 .2955 -.16365 7 8 18 54330 .2116 .2929 -.16387 7 8 19 54331 .2108 .2900 -.16399 7 8 20 54332 .2104 .2870 -.16399 7 8 21 54333 .2102 .2843 -.16385 7 8 22 54334 .2096 .2821 -.16356 7 8 23 54335 .2084 .2797 -.16313 7 8 24 54336 .2066 .2774 -.16263 7 8 25 54337 .2048 .2750 -.16219 7 8 26 54338 .2030 .2726 -.16190 7 8 27 54339 .2018 .2704 -.16192 7 8 28 54340 .2009 .2686 -.16221 7 8 29 54341 .2001 .2670 -.16287 7 8 30 54342 .1994 .2655 -.16371 7 8 31 54343 .1987 .2638 -.16468 7 9 1 54344 .1979 .2619 -.16565 _______________________________________________________________________ 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 = .0507 + .0764 cos A - .0294 sin A + .0044 cos C - .1159 sin C y = .3483 - .0289 cos A - .0743 sin A - .1159 cos C - .0044 sin C UT1-UTC = -.2162 - .00092 (MJD - 54382) - (UT2-UT1) where A = 2*pi*(MJD-54377)/365.25 and C = 2*pi*(MJD-54377)/435. TAI-UTC(MJD 54378) = 33.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-54377)**0.80 S t = 0.00025 (MJD-54377)**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 10 5 54378 0.1216 0.2017 -0.18952 2007 10 6 54379 0.1188 0.2007 -0.19041 2007 10 7 54380 0.1159 0.1996 -0.19141 2007 10 8 54381 0.1131 0.1987 -0.19250 2007 10 9 54382 0.1103 0.1978 -0.19367 2007 10 10 54383 0.1074 0.1970 -0.19485 2007 10 11 54384 0.1046 0.1962 -0.19599 2007 10 12 54385 0.1017 0.1955 -0.19700 2007 10 13 54386 0.0988 0.1949 -0.19785 2007 10 14 54387 0.0959 0.1943 -0.19853 2007 10 15 54388 0.0930 0.1937 -0.19907 2007 10 16 54389 0.0901 0.1932 -0.19956 2007 10 17 54390 0.0872 0.1927 -0.20004 2007 10 18 54391 0.0843 0.1923 -0.20056 2007 10 19 54392 0.0814 0.1920 -0.20122 2007 10 20 54393 0.0785 0.1917 -0.20207 2007 10 21 54394 0.0756 0.1914 -0.20319 2007 10 22 54395 0.0726 0.1912 -0.20461 2007 10 23 54396 0.0697 0.1910 -0.20631 2007 10 24 54397 0.0668 0.1909 -0.20820 2007 10 25 54398 0.0638 0.1908 -0.21013 2007 10 26 54399 0.0609 0.1908 -0.21191 2007 10 27 54400 0.0579 0.1908 -0.21341 2007 10 28 54401 0.0550 0.1908 -0.21458 2007 10 29 54402 0.0520 0.1909 -0.21547 2007 10 30 54403 0.0491 0.1911 -0.21621 2007 10 31 54404 0.0461 0.1913 -0.21696 2007 11 1 54405 0.0432 0.1915 -0.21783 2007 11 2 54406 0.0402 0.1918 -0.21888 2007 11 3 54407 0.0373 0.1921 -0.22010 2007 11 4 54408 0.0344 0.1925 -0.22145 2007 11 5 54409 0.0314 0.1929 -0.22285 2007 11 6 54410 0.0285 0.1934 -0.22425 2007 11 7 54411 0.0256 0.1939 -0.22559 2007 11 8 54412 0.0226 0.1944 -0.22681 2007 11 9 54413 0.0197 0.1950 -0.22787 2007 11 10 54414 0.0168 0.1957 -0.22875 2007 11 11 54415 0.0139 0.1964 -0.22944 2007 11 12 54416 0.0110 0.1971 -0.22999 2007 11 13 54417 0.0082 0.1979 -0.23047 2007 11 14 54418 0.0053 0.1987 -0.23094 2007 11 15 54419 0.0024 0.1996 -0.23149 2007 11 16 54420 -0.0004 0.2005 -0.23220 2007 11 17 54421 -0.0032 0.2014 -0.23313 2007 11 18 54422 -0.0061 0.2024 -0.23431 2007 11 19 54423 -0.0089 0.2034 -0.23576 2007 11 20 54424 -0.0117 0.2045 -0.23740 2007 11 21 54425 -0.0144 0.2056 -0.23913 2007 11 22 54426 -0.0172 0.2068 -0.24080 2007 11 23 54427 -0.0199 0.2080 -0.24226 2007 11 24 54428 -0.0226 0.2092 -0.24343 2007 11 25 54429 -0.0253 0.2105 -0.24431 2007 11 26 54430 -0.0280 0.2119 -0.24499 2007 11 27 54431 -0.0307 0.2132 -0.24561 2007 11 28 54432 -0.0333 0.2146 -0.24633 2007 11 29 54433 -0.0360 0.2161 -0.24722 2007 11 30 54434 -0.0386 0.2176 -0.24831 2007 12 1 54435 -0.0411 0.2191 -0.24957 2007 12 2 54436 -0.0437 0.2207 -0.25094 2007 12 3 54437 -0.0462 0.2223 -0.25232 2007 12 4 54438 -0.0487 0.2239 -0.25367 2007 12 5 54439 -0.0512 0.2256 -0.25490 2007 12 6 54440 -0.0536 0.2273 -0.25599 2007 12 7 54441 -0.0561 0.2291 -0.25691 2007 12 8 54442 -0.0585 0.2309 -0.25764 2007 12 9 54443 -0.0608 0.2327 -0.25823 2007 12 10 54444 -0.0632 0.2345 -0.25872 2007 12 11 54445 -0.0655 0.2364 -0.25918 2007 12 12 54446 -0.0677 0.2384 -0.25969 2007 12 13 54447 -0.0700 0.2404 -0.26033 2007 12 14 54448 -0.0722 0.2424 -0.26117 2007 12 15 54449 -0.0744 0.2444 -0.26222 2007 12 16 54450 -0.0765 0.2465 -0.26352 2007 12 17 54451 -0.0787 0.2486 -0.26500 2007 12 18 54452 -0.0807 0.2507 -0.26658 2007 12 19 54453 -0.0828 0.2529 -0.26815 2007 12 20 54454 -0.0848 0.2551 -0.26957 2007 12 21 54455 -0.0868 0.2573 -0.27075 2007 12 22 54456 -0.0887 0.2595 -0.27165 2007 12 23 54457 -0.0906 0.2618 -0.27234 2007 12 24 54458 -0.0925 0.2641 -0.27292 2007 12 25 54459 -0.0943 0.2665 -0.27356 2007 12 26 54460 -0.0961 0.2689 -0.27435 2007 12 27 54461 -0.0979 0.2713 -0.27536 2007 12 28 54462 -0.0996 0.2737 -0.27657 2007 12 29 54463 -0.1013 0.2761 -0.27791 2007 12 30 54464 -0.1029 0.2786 -0.27929 2007 12 31 54465 -0.1045 0.2811 -0.28062 2008 1 1 54466 -0.1061 0.2836 -0.28185 2008 1 2 54467 -0.1076 0.2862 -0.28291 2008 1 3 54468 -0.1090 0.2888 -0.28380 2008 1 4 54469 -0.1105 0.2914 -0.28450 2008 1 5 54470 -0.1118 0.2940 -0.28503 2008 1 6 54471 -0.1132 0.2966 -0.28546 2008 1 7 54472 -0.1145 0.2993 -0.28583 2008 1 8 54473 -0.1157 0.3019 -0.28624 2008 1 9 54474 -0.1170 0.3046 -0.28678 2008 1 10 54475 -0.1181 0.3073 -0.28751 2008 1 11 54476 -0.1192 0.3101 -0.28847 2008 1 12 54477 -0.1203 0.3128 -0.28967 2008 1 13 54478 -0.1213 0.3156 -0.29107 2008 1 14 54479 -0.1223 0.3184 -0.29258 2008 1 15 54480 -0.1233 0.3212 -0.29409 2008 1 16 54481 -0.1241 0.3240 -0.29547 2008 1 17 54482 -0.1250 0.3268 -0.29662 2008 1 18 54483 -0.1258 0.3296 -0.29752 2008 1 19 54484 -0.1265 0.3325 -0.29819 2008 1 20 54485 -0.1272 0.3353 -0.29872 2008 1 21 54486 -0.1279 0.3382 -0.29920 2008 1 22 54487 -0.1285 0.3411 -0.29982 2008 1 23 54488 -0.1290 0.3440 -0.30065 2008 1 24 54489 -0.1296 0.3469 -0.30170 2008 1 25 54490 -0.1300 0.3498 -0.30294 2008 1 26 54491 -0.1304 0.3527 -0.30427 2008 1 27 54492 -0.1308 0.3556 -0.30560 2008 1 28 54493 -0.1311 0.3585 -0.30684 2008 1 29 54494 -0.1314 0.3614 -0.30794 2008 1 30 54495 -0.1316 0.3644 -0.30886 2008 1 31 54496 -0.1317 0.3673 -0.30960 2008 2 1 54497 -0.1319 0.3702 -0.31017 2008 2 2 54498 -0.1319 0.3732 -0.31062 2008 2 3 54499 -0.1319 0.3761 -0.31102 2008 2 4 54500 -0.1319 0.3790 -0.31143 2008 2 5 54501 -0.1318 0.3820 -0.31195 2008 2 6 54502 -0.1317 0.3849 -0.31265 2008 2 7 54503 -0.1315 0.3878 -0.31361 2008 2 8 54504 -0.1313 0.3908 -0.31483 2008 2 9 54505 -0.1310 0.3937 -0.31629 2008 2 10 54506 -0.1307 0.3966 -0.31789 2008 2 11 54507 -0.1303 0.3995 -0.31950 2008 2 12 54508 -0.1299 0.4025 -0.32101 2008 2 13 54509 -0.1294 0.4054 -0.32230 2008 2 14 54510 -0.1288 0.4083 -0.32332 2008 2 15 54511 -0.1283 0.4112 -0.32412 2008 2 16 54512 -0.1276 0.4140 -0.32476 2008 2 17 54513 -0.1270 0.4169 -0.32538 2008 2 18 54514 -0.1262 0.4198 -0.32609 2008 2 19 54515 -0.1255 0.4226 -0.32699 2008 2 20 54516 -0.1246 0.4255 -0.32812 2008 2 21 54517 -0.1238 0.4283 -0.32947 2008 2 22 54518 -0.1228 0.4311 -0.33096 2008 2 23 54519 -0.1219 0.4339 -0.33250 2008 2 24 54520 -0.1209 0.4367 -0.33399 2008 2 25 54521 -0.1198 0.4395 -0.33536 2008 2 26 54522 -0.1187 0.4422 -0.33656 2008 2 27 54523 -0.1175 0.4449 -0.33757 2008 2 28 54524 -0.1163 0.4477 -0.33841 2008 2 29 54525 -0.1151 0.4504 -0.33911 2008 3 1 54526 -0.1138 0.4530 -0.33973 2008 3 2 54527 -0.1124 0.4557 -0.34035 2008 3 3 54528 -0.1110 0.4583 -0.34104 2008 3 4 54529 -0.1096 0.4610 -0.34190 2008 3 5 54530 -0.1081 0.4636 -0.34299 2008 3 6 54531 -0.1066 0.4661 -0.34436 2008 3 7 54532 -0.1050 0.4687 -0.34601 2008 3 8 54533 -0.1034 0.4712 -0.34786 2008 3 9 54534 -0.1017 0.4737 -0.34980 2008 3 10 54535 -0.1000 0.4762 -0.35167 2008 3 11 54536 -0.0983 0.4787 -0.35334 2008 3 12 54537 -0.0965 0.4811 -0.35474 2008 3 13 54538 -0.0947 0.4835 -0.35588 2008 3 14 54539 -0.0928 0.4859 -0.35682 2008 3 15 54540 -0.0909 0.4882 -0.35770 2008 3 16 54541 -0.0890 0.4905 -0.35864 2008 3 17 54542 -0.0870 0.4928 -0.35974 2008 3 18 54543 -0.0849 0.4951 -0.36106 2008 3 19 54544 -0.0829 0.4973 -0.36259 2008 3 20 54545 -0.0808 0.4995 -0.36429 2008 3 21 54546 -0.0786 0.5016 -0.36608 2008 3 22 54547 -0.0764 0.5038 -0.36785 2008 3 23 54548 -0.0742 0.5059 -0.36954 2008 3 24 54549 -0.0719 0.5079 -0.37107 2008 3 25 54550 -0.0697 0.5100 -0.37242 2008 3 26 54551 -0.0673 0.5120 -0.37359 2008 3 27 54552 -0.0650 0.5139 -0.37460 2008 3 28 54553 -0.0626 0.5158 -0.37552 2008 3 29 54554 -0.0601 0.5177 -0.37639 2008 3 30 54555 -0.0577 0.5196 -0.37731 2008 3 31 54556 -0.0552 0.5214 -0.37836 2008 4 1 54557 -0.0526 0.5232 -0.37960 2008 4 2 54558 -0.0501 0.5249 -0.38111 2008 4 3 54559 -0.0475 0.5266 -0.38290 2008 4 4 54560 -0.0449 0.5283 -0.38495 2008 4 5 54561 -0.0422 0.5299 -0.38717 2008 4 6 54562 -0.0395 0.5315 -0.38941 2008 4 7 54563 -0.0368 0.5330 -0.39153 2008 4 8 54564 -0.0341 0.5345 -0.39341 2008 4 9 54565 -0.0314 0.5359 -0.39501 2008 4 10 54566 -0.0286 0.5374 -0.39640 2008 4 11 54567 -0.0258 0.5387 -0.39769 2008 4 12 54568 -0.0229 0.5401 -0.39899 2008 4 13 54569 -0.0201 0.5413 -0.40043 2008 4 14 54570 -0.0172 0.5426 -0.40204 2008 4 15 54571 -0.0143 0.5438 -0.40380 2008 4 16 54572 -0.0114 0.5450 -0.40568 2008 4 17 54573 -0.0084 0.5461 -0.40758 2008 4 18 54574 -0.0055 0.5471 -0.40942 2008 4 19 54575 -0.0025 0.5482 -0.41114 2008 4 20 54576 0.0005 0.5491 -0.41268 2008 4 21 54577 0.0036 0.5501 -0.41401 2008 4 22 54578 0.0066 0.5510 -0.41512 2008 4 23 54579 0.0096 0.5518 -0.41603 2008 4 24 54580 0.0127 0.5526 -0.41678 2008 4 25 54581 0.0158 0.5533 -0.41741 2008 4 26 54582 0.0189 0.5540 -0.41797 2008 4 27 54583 0.0220 0.5547 -0.41855 2008 4 28 54584 0.0251 0.5553 -0.41920 2008 4 29 54585 0.0283 0.5559 -0.42001 2008 4 30 54586 0.0314 0.5564 -0.42103 2008 5 1 54587 0.0346 0.5568 -0.42229 2008 5 2 54588 0.0377 0.5573 -0.42373 2008 5 3 54589 0.0409 0.5576 -0.42527 2008 5 4 54590 0.0441 0.5580 -0.42674 2008 5 5 54591 0.0472 0.5582 -0.42800 2008 5 6 54592 0.0504 0.5585 -0.42896 2008 5 7 54593 0.0536 0.5586 -0.42958 2008 5 8 54594 0.0568 0.5588 -0.42995 2008 5 9 54595 0.0600 0.5589 -0.43020 2008 5 10 54596 0.0632 0.5589 -0.43050 2008 5 11 54597 0.0664 0.5589 -0.43097 2008 5 12 54598 0.0696 0.5588 -0.43168 2008 5 13 54599 0.0729 0.5587 -0.43257 2008 5 14 54600 0.0761 0.5585 -0.43356 2008 5 15 54601 0.0793 0.5583 -0.43455 2008 5 16 54602 0.0825 0.5581 -0.43546 2008 5 17 54603 0.0857 0.5578 -0.43624 2008 5 18 54604 0.0889 0.5574 -0.43679 2008 5 19 54605 0.0920 0.5570 -0.43704 2008 5 20 54606 0.0952 0.5566 -0.43707 2008 5 21 54607 0.0984 0.5561 -0.43691 2008 5 22 54608 0.1016 0.5555 -0.43663 2008 5 23 54609 0.1047 0.5549 -0.43633 2008 5 24 54610 0.1079 0.5543 -0.43607 2008 5 25 54611 0.1110 0.5536 -0.43597 2008 5 26 54612 0.1141 0.5529 -0.43607 2008 5 27 54613 0.1173 0.5521 -0.43640 2008 5 28 54614 0.1204 0.5513 -0.43695 2008 5 29 54615 0.1235 0.5504 -0.43765 2008 5 30 54616 0.1265 0.5495 -0.43843 2008 5 31 54617 0.1296 0.5485 -0.43910 2008 6 1 54618 0.1326 0.5475 -0.43962 2008 6 2 54619 0.1357 0.5464 -0.43991 2008 6 3 54620 0.1387 0.5453 -0.43991 2008 6 4 54621 0.1417 0.5442 -0.43972 2008 6 5 54622 0.1447 0.5430 -0.43941 2008 6 6 54623 0.1476 0.5417 -0.43926 2008 6 7 54624 0.1505 0.5405 -0.43942 2008 6 8 54625 0.1535 0.5391 -0.43992 2008 6 9 54626 0.1564 0.5378 -0.44070 2008 6 10 54627 0.1592 0.5363 -0.44164 2008 6 11 54628 0.1621 0.5349 -0.44263 2008 6 12 54629 0.1649 0.5334 -0.44357 2008 6 13 54630 0.1677 0.5318 -0.44435 2008 6 14 54631 0.1705 0.5302 -0.44496 2008 6 15 54632 0.1732 0.5286 -0.44541 2008 6 16 54633 0.1759 0.5270 -0.44565 2008 6 17 54634 0.1786 0.5252 -0.44576 2008 6 18 54635 0.1813 0.5235 -0.44576 2008 6 19 54636 0.1839 0.5217 -0.44575 2008 6 20 54637 0.1865 0.5199 -0.44582 2008 6 21 54638 0.1891 0.5180 -0.44600 2008 6 22 54639 0.1916 0.5161 -0.44637 2008 6 23 54640 0.1941 0.5141 -0.44694 2008 6 24 54641 0.1966 0.5122 -0.44773 2008 6 25 54642 0.1990 0.5101 -0.44868 2008 6 26 54643 0.2015 0.5081 -0.44976 2008 6 27 54644 0.2038 0.5060 -0.45085 2008 6 28 54645 0.2062 0.5039 -0.45180 2008 6 29 54646 0.2085 0.5017 -0.45254 2008 6 30 54647 0.2107 0.4995 -0.45301 2008 7 1 54648 0.2130 0.4973 -0.45318 2008 7 2 54649 0.2152 0.4950 -0.45318 2008 7 3 54650 0.2173 0.4927 -0.45320 2008 7 4 54651 0.2194 0.4904 -0.45337 2008 7 5 54652 0.2215 0.4880 -0.45370 2008 7 6 54653 0.2235 0.4856 -0.45426 2008 7 7 54654 0.2255 0.4832 -0.45504 2008 7 8 54655 0.2275 0.4807 -0.45579 2008 7 9 54656 0.2294 0.4782 -0.45646 2008 7 10 54657 0.2313 0.4757 -0.45699 2008 7 11 54658 0.2331 0.4732 -0.45729 2008 7 12 54659 0.2349 0.4706 -0.45731 2008 7 13 54660 0.2366 0.4680 -0.45713 2008 7 14 54661 0.2383 0.4654 -0.45674 2008 7 15 54662 0.2399 0.4628 -0.45617 2008 7 16 54663 0.2416 0.4601 -0.45553 2008 7 17 54664 0.2431 0.4574 -0.45491 2008 7 18 54665 0.2446 0.4547 -0.45438 2008 7 19 54666 0.2461 0.4520 -0.45400 2008 7 20 54667 0.2475 0.4492 -0.45390 2008 7 21 54668 0.2489 0.4464 -0.45405 2008 7 22 54669 0.2502 0.4436 -0.45443 2008 7 23 54670 0.2515 0.4408 -0.45496 2008 7 24 54671 0.2527 0.4379 -0.45551 2008 7 25 54672 0.2539 0.4351 -0.45598 2008 7 26 54673 0.2551 0.4322 -0.45618 2008 7 27 54674 0.2562 0.4293 -0.45613 2008 7 28 54675 0.2572 0.4264 -0.45585 2008 7 29 54676 0.2582 0.4235 -0.45542 2008 7 30 54677 0.2591 0.4205 -0.45495 2008 7 31 54678 0.2600 0.4176 -0.45460 2008 8 1 54679 0.2608 0.4146 -0.45448 2008 8 2 54680 0.2616 0.4117 -0.45460 2008 8 3 54681 0.2624 0.4087 -0.45499 2008 8 4 54682 0.2630 0.4057 -0.45553 2008 8 5 54683 0.2637 0.4027 -0.45605 2008 8 6 54684 0.2643 0.3996 -0.45642 2008 8 7 54685 0.2648 0.3966 -0.45666 2008 8 8 54686 0.2653 0.3936 -0.45673 2008 8 9 54687 0.2657 0.3905 -0.45653 2008 8 10 54688 0.2661 0.3875 -0.45624 2008 8 11 54689 0.2664 0.3844 -0.45589 2008 8 12 54690 0.2667 0.3814 -0.45549 2008 8 13 54691 0.2669 0.3783 -0.45514 2008 8 14 54692 0.2671 0.3752 -0.45488 2008 8 15 54693 0.2672 0.3722 -0.45478 2008 8 16 54694 0.2672 0.3691 -0.45490 2008 8 17 54695 0.2672 0.3660 -0.45521 2008 8 18 54696 0.2672 0.3630 -0.45575 2008 8 19 54697 0.2671 0.3599 -0.45642 2008 8 20 54698 0.2670 0.3568 -0.45709 2008 8 21 54699 0.2668 0.3538 -0.45767 2008 8 22 54700 0.2665 0.3507 -0.45812 2008 8 23 54701 0.2662 0.3477 -0.45834 2008 8 24 54702 0.2658 0.3446 -0.45831 2008 8 25 54703 0.2654 0.3416 -0.45813 2008 8 26 54704 0.2650 0.3385 -0.45790 2008 8 27 54705 0.2645 0.3355 -0.45773 2008 8 28 54706 0.2639 0.3325 -0.45771 2008 8 29 54707 0.2633 0.3295 -0.45793 2008 8 30 54708 0.2626 0.3265 -0.45840 2008 8 31 54709 0.2619 0.3235 -0.45911 2008 9 1 54710 0.2611 0.3205 -0.45987 2008 9 2 54711 0.2603 0.3175 -0.46057 2008 9 3 54712 0.2594 0.3146 -0.46107 2008 9 4 54713 0.2585 0.3116 -0.46134 2008 9 5 54714 0.2575 0.3087 -0.46140 2008 9 6 54715 0.2565 0.3058 -0.46126 2008 9 7 54716 0.2554 0.3029 -0.46096 2008 9 8 54717 0.2543 0.3000 -0.46067 2008 9 9 54718 0.2531 0.2972 -0.46044 2008 9 10 54719 0.2519 0.2943 -0.46031 2008 9 11 54720 0.2506 0.2915 -0.46038 2008 9 12 54721 0.2493 0.2887 -0.46059 2008 9 13 54722 0.2479 0.2859 -0.46110 2008 9 14 54723 0.2465 0.2832 -0.46187 2008 9 15 54724 0.2451 0.2804 -0.46283 2008 9 16 54725 0.2435 0.2777 -0.46392 2008 9 17 54726 0.2420 0.2750 -0.46500 2008 9 18 54727 0.2404 0.2723 -0.46601 2008 9 19 54728 0.2387 0.2697 -0.46678 2008 9 20 54729 0.2370 0.2671 -0.46730 2008 9 21 54730 0.2353 0.2645 -0.46758 2008 9 22 54731 0.2335 0.2619 -0.46774 2008 9 23 54732 0.2317 0.2594 -0.46797 2008 9 24 54733 0.2298 0.2568 -0.46838 2008 9 25 54734 0.2279 0.2544 -0.46905 2008 9 26 54735 0.2259 0.2519 -0.47001 2008 9 27 54736 0.2239 0.2495 -0.47125 2008 9 28 54737 0.2219 0.2471 -0.47259 2008 9 29 54738 0.2198 0.2447 -0.47397 2008 9 30 54739 0.2177 0.2424 -0.47525 2008 10 1 54740 0.2155 0.2401 -0.47634 2008 10 2 54741 0.2133 0.2378 -0.47718 2008 10 3 54742 0.2111 0.2356 -0.47780 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) 54358 -68.80 .22 -6.06 .12 54359 -68.89 .13 -6.29 .16 54360 -68.71 .13 -6.39 .16 54361 -68.46 .74 -6.51 .18 54362 -68.32 .19 -6.71 .13 54363 -68.26 .19 -6.85 .13 54364 -68.13 .19 -6.79 .13 IERS Celestial Pole Offset Final Series MJD dpsi deps (msec. of arc) 54315 -66.7 -6.7 54316 -67.2 -6.8 54317 -67.3 -6.8 54318 -67.1 -6.8 54319 -66.8 -6.8 54320 -66.6 -6.8 54321 -66.6 -6.9 54322 -66.6 -7.1 54323 -66.5 -7.1 54324 -66.3 -7.0 54325 -66.2 -6.7 54326 -66.2 -6.4 54327 -66.5 -6.2 54328 -66.9 -6.2 54329 -67.4 -6.4 54330 -67.8 -6.5 54331 -67.9 -6.6 54332 -67.8 -6.6 54333 -67.8 -6.6 54334 -67.9 -6.8 54335 -68.0 -7.0 54336 -67.9 -7.0 54337 -67.8 -6.9 54338 -67.7 -6.8 54339 -67.7 -6.8 54340 -67.7 -6.8 54341 -67.9 -6.7 54342 -68.3 -6.5 54343 -68.8 -6.5 54344 -69.2 -6.5 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 54358 -0.194 0.088 -0.263 0.120 54359 -0.200 0.052 -0.282 0.160 54360 -0.200 0.052 -0.283 0.160 54361 -0.196 0.294 -0.292 0.180 54362 -0.187 0.076 -0.312 0.130 54363 -0.179 0.076 -0.317 0.130 54364 -0.167 0.076 -0.302 0.130 IAU2000A Celestial Pole Offset Final Series MJD dX dY (msec. of arc) 54315 -0.18 -0.47 54316 -0.22 -0.48 54317 -0.18 -0.39 54318 -0.11 -0.35 54319 -0.03 -0.35 54320 0.03 -0.36 54321 0.05 -0.41 54322 0.07 -0.51 54323 0.08 -0.45 54324 0.08 -0.41 54325 0.04 -0.36 54326 0.02 -0.40 54327 -0.02 -0.43 54328 -0.02 -0.42 54329 -0.01 -0.43 54330 -0.00 -0.32 54331 0.01 -0.33 54332 0.02 -0.33 54333 -0.02 -0.29 54334 -0.06 -0.35 54335 -0.09 -0.42 54336 -0.06 -0.40 54337 -0.04 -0.38 54338 0.00 -0.36 54339 0.03 -0.41 54340 0.04 -0.48 54341 -0.00 -0.51 54342 -0.07 -0.41 54343 -0.12 -0.37 54344 -0.14 -0.24 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.