********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 25 September 2014 Vol. XXVII No. 039 ______________________________________________________________________ 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 = -0.4 seconds beginning 25 Sep 2014 at 0000 UTC Beginning 1 July 2012: TAI-UTC = 35.000 000 seconds *********************************************************************** * * * An unexpected server failure of maia.usno.navy.mil occurred on * * on September 4, 2014 at around 21:00 UTC, and a replacement was * * put in place by about 22:15 UTC the same day. However, some of * * the functionality of maia.usno.navy.mil was lost and recovery of * * all functions is on-going. A list of impacts is given below: * * * * 1) The EOP daily solution, which is normally produced no later * * than 18:00 UTC each day, was not updated on September 8, 2014. * * 2) The scheduled maia.usno.navy.mil replacement, which was * * announced earlier and scheduled to occur in mid-September, was * * implemented on September 4, 2014 due to the emergency that day. * * * * Please note that as of September 16, 2014, the email to the * * address, ser7@maia.usno.navy.mil, has been restored. * * * * Please note that daily and Bulletin A EOP data can be obtained from * * the primary Earth Orientation (EO) servers at: * * http://maia.usno.navy.mil ftp://maia.usno.navy.mil * * and from the backup EO server at: * * http://toshi.nofs.navy.mil ftp://toshi.nofs.navy.mil * * * * Distribution statement A. Approved for public release: * * distribution unlimited. * * * *********************************************************************** ________________________________________________________________________ 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 14 9 19 56919 0.20047 .00009 0.30665 .00009 -0.341633 0.000027 14 9 20 56920 0.19968 .00009 0.30501 .00009 -0.342326 0.000018 14 9 21 56921 0.19889 .00009 0.30327 .00009 -0.343067 0.000010 14 9 22 56922 0.19826 .00009 0.30146 .00009 -0.343942 0.000008 14 9 23 56923 0.19761 .00009 0.29965 .00009 -0.344896 0.000008 14 9 24 56924 0.19681 .00009 0.29797 .00009 -0.345849 0.000065 14 9 25 56925 0.19612 .00009 0.29638 .00009 -0.346812 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 = 0.1114 + 0.0616 cos A - 0.0185 sin A + 0.0241 cos C - 0.0395 sin C y = 0.3507 - 0.0144 cos A - 0.0556 sin A - 0.0395 cos C - 0.0241 sin C UT1-UTC = -0.3878 - 0.00101 (MJD - 56933) - (UT2-UT1) where A = 2*pi*(MJD-56925)/365.25 and C = 2*pi*(MJD-56925)/435. TAI-UTC(MJD 56926) = 35.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-56925)**0.80 S t = 0.00025 (MJD-56925)**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) 2014 9 26 56926 0.1954 0.2949 -0.34777 2014 9 27 56927 0.1947 0.2935 -0.34869 2014 9 28 56928 0.1939 0.2921 -0.34953 2014 9 29 56929 0.1931 0.2907 -0.35033 2014 9 30 56930 0.1922 0.2892 -0.35111 2014 10 1 56931 0.1913 0.2878 -0.35189 2014 10 2 56932 0.1904 0.2863 -0.35270 2014 10 3 56933 0.1894 0.2849 -0.35361 2014 10 4 56934 0.1885 0.2835 -0.35469 2014 10 5 56935 0.1875 0.2821 -0.35598 2014 10 6 56936 0.1864 0.2808 -0.35743 2014 10 7 56937 0.1853 0.2794 -0.35898 2014 10 8 56938 0.1842 0.2781 -0.36057 2014 10 9 56939 0.1831 0.2767 -0.36211 2014 10 10 56940 0.1819 0.2754 -0.36352 2014 10 11 56941 0.1807 0.2741 -0.36480 2014 10 12 56942 0.1795 0.2728 -0.36594 2014 10 13 56943 0.1783 0.2716 -0.36696 2014 10 14 56944 0.1770 0.2703 -0.36789 2014 10 15 56945 0.1758 0.2691 -0.36880 2014 10 16 56946 0.1744 0.2679 -0.36974 2014 10 17 56947 0.1731 0.2667 -0.37074 2014 10 18 56948 0.1717 0.2655 -0.37182 2014 10 19 56949 0.1704 0.2644 -0.37300 2014 10 20 56950 0.1690 0.2633 -0.37426 2014 10 21 56951 0.1675 0.2622 -0.37558 2014 10 22 56952 0.1661 0.2611 -0.37693 2014 10 23 56953 0.1646 0.2600 -0.37828 2014 10 24 56954 0.1631 0.2590 -0.37961 2014 10 25 56955 0.1616 0.2580 -0.38091 2014 10 26 56956 0.1601 0.2570 -0.38214 2014 10 27 56957 0.1585 0.2560 -0.38333 2014 10 28 56958 0.1569 0.2551 -0.38450 2014 10 29 56959 0.1553 0.2542 -0.38569 2014 10 30 56960 0.1537 0.2533 -0.38695 2014 10 31 56961 0.1521 0.2524 -0.38832 2014 11 1 56962 0.1504 0.2515 -0.38985 2014 11 2 56963 0.1488 0.2507 -0.39151 2014 11 3 56964 0.1471 0.2499 -0.39328 2014 11 4 56965 0.1454 0.2492 -0.39510 2014 11 5 56966 0.1436 0.2484 -0.39690 2014 11 6 56967 0.1419 0.2477 -0.39860 2014 11 7 56968 0.1401 0.2470 -0.40015 2014 11 8 56969 0.1384 0.2464 -0.40155 2014 11 9 56970 0.1366 0.2457 -0.40282 2014 11 10 56971 0.1348 0.2451 -0.40400 2014 11 11 56972 0.1330 0.2445 -0.40515 2014 11 12 56973 0.1312 0.2440 -0.40630 2014 11 13 56974 0.1293 0.2435 -0.40750 2014 11 14 56975 0.1275 0.2430 -0.40875 2014 11 15 56976 0.1256 0.2425 -0.41008 2014 11 16 56977 0.1238 0.2421 -0.41148 2014 11 17 56978 0.1219 0.2417 -0.41294 2014 11 18 56979 0.1200 0.2413 -0.41444 2014 11 19 56980 0.1181 0.2409 -0.41596 2014 11 20 56981 0.1162 0.2406 -0.41746 2014 11 21 56982 0.1143 0.2403 -0.41892 2014 11 22 56983 0.1124 0.2401 -0.42032 2014 11 23 56984 0.1104 0.2398 -0.42166 2014 11 24 56985 0.1085 0.2396 -0.42295 2014 11 25 56986 0.1066 0.2395 -0.42425 2014 11 26 56987 0.1046 0.2393 -0.42559 2014 11 27 56988 0.1027 0.2392 -0.42704 2014 11 28 56989 0.1007 0.2392 -0.42861 2014 11 29 56990 0.0988 0.2391 -0.43030 2014 11 30 56991 0.0968 0.2391 -0.43208 2014 12 1 56992 0.0948 0.2391 -0.43388 2014 12 2 56993 0.0929 0.2392 -0.43564 2014 12 3 56994 0.0909 0.2392 -0.43730 2014 12 4 56995 0.0889 0.2393 -0.43882 2014 12 5 56996 0.0870 0.2395 -0.44017 2014 12 6 56997 0.0850 0.2397 -0.44138 2014 12 7 56998 0.0830 0.2399 -0.44248 2014 12 8 56999 0.0811 0.2401 -0.44352 2014 12 9 57000 0.0791 0.2404 -0.44453 2014 12 10 57001 0.0772 0.2407 -0.44557 2014 12 11 57002 0.0752 0.2410 -0.44664 2014 12 12 57003 0.0733 0.2414 -0.44778 2014 12 13 57004 0.0713 0.2417 -0.44897 2014 12 14 57005 0.0694 0.2422 -0.45022 2014 12 15 57006 0.0674 0.2426 -0.45150 2014 12 16 57007 0.0655 0.2431 -0.45281 2014 12 17 57008 0.0636 0.2436 -0.45410 2014 12 18 57009 0.0617 0.2442 -0.45537 2014 12 19 57010 0.0598 0.2447 -0.45658 2014 12 20 57011 0.0579 0.2453 -0.45773 2014 12 21 57012 0.0560 0.2460 -0.45884 2014 12 22 57013 0.0541 0.2467 -0.45993 2014 12 23 57014 0.0522 0.2474 -0.46106 2014 12 24 57015 0.0504 0.2481 -0.46228 2014 12 25 57016 0.0485 0.2488 -0.46363 2014 12 26 57017 0.0467 0.2496 -0.46510 2014 12 27 57018 0.0449 0.2504 -0.46666 2014 12 28 57019 0.0431 0.2513 -0.46825 2014 12 29 57020 0.0413 0.2522 -0.46979 2014 12 30 57021 0.0395 0.2531 -0.47123 2014 12 31 57022 0.0378 0.2540 -0.47253 2015 1 1 57023 0.0360 0.2550 -0.47368 2015 1 2 57024 0.0343 0.2560 -0.47469 2015 1 3 57025 0.0326 0.2570 -0.47559 2015 1 4 57026 0.0309 0.2580 -0.47641 2015 1 5 57027 0.0292 0.2591 -0.47720 2015 1 6 57028 0.0275 0.2602 -0.47800 2015 1 7 57029 0.0259 0.2613 -0.47885 2015 1 8 57030 0.0243 0.2625 -0.47975 2015 1 9 57031 0.0226 0.2637 -0.48071 2015 1 10 57032 0.0211 0.2649 -0.48173 2015 1 11 57033 0.0195 0.2661 -0.48279 2015 1 12 57034 0.0180 0.2674 -0.48389 2015 1 13 57035 0.0164 0.2687 -0.48498 2015 1 14 57036 0.0149 0.2700 -0.48606 2015 1 15 57037 0.0135 0.2713 -0.48710 2015 1 16 57038 0.0120 0.2727 -0.48810 2015 1 17 57039 0.0106 0.2741 -0.48906 2015 1 18 57040 0.0092 0.2755 -0.49000 2015 1 19 57041 0.0078 0.2769 -0.49099 2015 1 20 57042 0.0064 0.2784 -0.49207 2015 1 21 57043 0.0051 0.2799 -0.49330 2015 1 22 57044 0.0038 0.2814 -0.49470 2015 1 23 57045 0.0025 0.2829 -0.49624 2015 1 24 57046 0.0013 0.2844 -0.49785 2015 1 25 57047 0.0000 0.2860 -0.49947 2015 1 26 57048 -0.0012 0.2876 -0.50099 2015 1 27 57049 -0.0023 0.2892 -0.50238 2015 1 28 57050 -0.0035 0.2908 -0.50361 2015 1 29 57051 -0.0046 0.2925 -0.50469 2015 1 30 57052 -0.0057 0.2942 -0.50565 2015 1 31 57053 -0.0067 0.2958 -0.50653 2015 2 1 57054 -0.0077 0.2975 -0.50739 2015 2 2 57055 -0.0087 0.2993 -0.50827 2015 2 3 57056 -0.0097 0.3010 -0.50919 2015 2 4 57057 -0.0106 0.3028 -0.51018 2015 2 5 57058 -0.0115 0.3045 -0.51125 2015 2 6 57059 -0.0124 0.3063 -0.51239 2015 2 7 57060 -0.0132 0.3081 -0.51360 2015 2 8 57061 -0.0140 0.3099 -0.51484 2015 2 9 57062 -0.0148 0.3118 -0.51610 2015 2 10 57063 -0.0156 0.3136 -0.51735 2015 2 11 57064 -0.0163 0.3155 -0.51857 2015 2 12 57065 -0.0169 0.3174 -0.51974 2015 2 13 57066 -0.0176 0.3192 -0.52088 2015 2 14 57067 -0.0182 0.3211 -0.52200 2015 2 15 57068 -0.0188 0.3230 -0.52315 2015 2 16 57069 -0.0193 0.3250 -0.52438 2015 2 17 57070 -0.0198 0.3269 -0.52575 2015 2 18 57071 -0.0203 0.3288 -0.52730 2015 2 19 57072 -0.0207 0.3308 -0.52905 2015 2 20 57073 -0.0211 0.3327 -0.53094 2015 2 21 57074 -0.0215 0.3347 -0.53288 2015 2 22 57075 -0.0218 0.3367 -0.53478 2015 2 23 57076 -0.0221 0.3387 -0.53656 2015 2 24 57077 -0.0224 0.3406 -0.53816 2015 2 25 57078 -0.0226 0.3426 -0.53959 2015 2 26 57079 -0.0228 0.3446 -0.54088 2015 2 27 57080 -0.0229 0.3466 -0.54207 2015 2 28 57081 -0.0230 0.3486 -0.54321 2015 3 1 57082 -0.0231 0.3507 -0.54434 2015 3 2 57083 -0.0231 0.3527 -0.54551 2015 3 3 57084 -0.0231 0.3547 -0.54674 2015 3 4 57085 -0.0231 0.3567 -0.54805 2015 3 5 57086 -0.0230 0.3587 -0.54943 2015 3 6 57087 -0.0229 0.3607 -0.55088 2015 3 7 57088 -0.0228 0.3628 -0.55238 2015 3 8 57089 -0.0226 0.3648 -0.55389 2015 3 9 57090 -0.0224 0.3668 -0.55541 2015 3 10 57091 -0.0222 0.3688 -0.55689 2015 3 11 57092 -0.0219 0.3708 -0.55833 2015 3 12 57093 -0.0215 0.3729 -0.55972 2015 3 13 57094 -0.0212 0.3749 -0.56107 2015 3 14 57095 -0.0208 0.3769 -0.56242 2015 3 15 57096 -0.0203 0.3789 -0.56383 2015 3 16 57097 -0.0199 0.3809 -0.56534 2015 3 17 57098 -0.0194 0.3829 -0.56703 2015 3 18 57099 -0.0188 0.3849 -0.56891 2015 3 19 57100 -0.0182 0.3868 -0.57097 2015 3 20 57101 -0.0176 0.3888 -0.57316 2015 3 21 57102 -0.0170 0.3908 -0.57538 2015 3 22 57103 -0.0163 0.3927 -0.57753 2015 3 23 57104 -0.0156 0.3947 -0.57954 2015 3 24 57105 -0.0148 0.3966 -0.58137 2015 3 25 57106 -0.0140 0.3985 -0.58303 2015 3 26 57107 -0.0132 0.4005 -0.58458 2015 3 27 57108 -0.0123 0.4024 -0.58606 2015 3 28 57109 -0.0114 0.4043 -0.58752 2015 3 29 57110 -0.0105 0.4062 -0.58900 2015 3 30 57111 -0.0095 0.4080 -0.59054 2015 3 31 57112 -0.0085 0.4099 -0.59216 2015 4 1 57113 -0.0074 0.4117 -0.59384 2015 4 2 57114 -0.0064 0.4136 -0.59559 2015 4 3 57115 -0.0053 0.4154 -0.59737 2015 4 4 57116 -0.0041 0.4172 -0.59915 2015 4 5 57117 -0.0029 0.4189 -0.60089 2015 4 6 57118 -0.0017 0.4207 -0.60254 2015 4 7 57119 -0.0005 0.4225 -0.60410 2015 4 8 57120 0.0008 0.4242 -0.60554 2015 4 9 57121 0.0021 0.4259 -0.60686 2015 4 10 57122 0.0034 0.4276 -0.60811 2015 4 11 57123 0.0048 0.4293 -0.60931 2015 4 12 57124 0.0062 0.4309 -0.61055 2015 4 13 57125 0.0076 0.4326 -0.61189 2015 4 14 57126 0.0091 0.4342 -0.61336 2015 4 15 57127 0.0105 0.4358 -0.61500 2015 4 16 57128 0.0121 0.4373 -0.61676 2015 4 17 57129 0.0136 0.4389 -0.61858 2015 4 18 57130 0.0152 0.4404 -0.62036 2015 4 19 57131 0.0168 0.4419 -0.62201 2015 4 20 57132 0.0184 0.4434 -0.62347 2015 4 21 57133 0.0201 0.4449 -0.62472 2015 4 22 57134 0.0218 0.4463 -0.62580 2015 4 23 57135 0.0235 0.4477 -0.62677 2015 4 24 57136 0.0252 0.4491 -0.62769 2015 4 25 57137 0.0270 0.4505 -0.62864 2015 4 26 57138 0.0288 0.4518 -0.62965 2015 4 27 57139 0.0306 0.4531 -0.63074 2015 4 28 57140 0.0325 0.4544 -0.63193 2015 4 29 57141 0.0343 0.4556 -0.63321 2015 4 30 57142 0.0362 0.4568 -0.63455 2015 5 1 57143 0.0381 0.4580 -0.63594 2015 5 2 57144 0.0401 0.4592 -0.63733 2015 5 3 57145 0.0420 0.4603 -0.63869 2015 5 4 57146 0.0440 0.4615 -0.64000 2015 5 5 57147 0.0460 0.4625 -0.64124 2015 5 6 57148 0.0480 0.4636 -0.64241 2015 5 7 57149 0.0501 0.4646 -0.64352 2015 5 8 57150 0.0521 0.4656 -0.64464 2015 5 9 57151 0.0542 0.4666 -0.64578 2015 5 10 57152 0.0563 0.4675 -0.64691 2015 5 11 57153 0.0584 0.4684 -0.64815 2015 5 12 57154 0.0605 0.4692 -0.64949 2015 5 13 57155 0.0627 0.4701 -0.65092 2015 5 14 57156 0.0649 0.4709 -0.65241 2015 5 15 57157 0.0670 0.4716 -0.65393 2015 5 16 57158 0.0692 0.4724 -0.65539 2015 5 17 57159 0.0715 0.4731 -0.65674 2015 5 18 57160 0.0737 0.4737 -0.65793 2015 5 19 57161 0.0759 0.4744 -0.65893 2015 5 20 57162 0.0782 0.4750 -0.65978 2015 5 21 57163 0.0804 0.4755 -0.66052 2015 5 22 57164 0.0827 0.4761 -0.66118 2015 5 23 57165 0.0850 0.4766 -0.66183 2015 5 24 57166 0.0873 0.4770 -0.66246 2015 5 25 57167 0.0896 0.4775 -0.66307 2015 5 26 57168 0.0919 0.4778 -0.66370 2015 5 27 57169 0.0942 0.4782 -0.66431 2015 5 28 57170 0.0965 0.4785 -0.66491 2015 5 29 57171 0.0989 0.4788 -0.66549 2015 5 30 57172 0.1012 0.4791 -0.66599 2015 5 31 57173 0.1036 0.4793 -0.66642 2015 6 1 57174 0.1059 0.4795 -0.66683 2015 6 2 57175 0.1083 0.4796 -0.66719 2015 6 3 57176 0.1106 0.4797 -0.66750 2015 6 4 57177 0.1130 0.4798 -0.66779 2015 6 5 57178 0.1154 0.4798 -0.66815 2015 6 6 57179 0.1177 0.4798 -0.66865 2015 6 7 57180 0.1201 0.4798 -0.66927 2015 6 8 57181 0.1225 0.4797 -0.67002 2015 6 9 57182 0.1248 0.4796 -0.67087 2015 6 10 57183 0.1272 0.4794 -0.67180 2015 6 11 57184 0.1296 0.4793 -0.67282 2015 6 12 57185 0.1319 0.4790 -0.67377 2015 6 13 57186 0.1343 0.4788 -0.67465 2015 6 14 57187 0.1367 0.4785 -0.67544 2015 6 15 57188 0.1390 0.4782 -0.67606 2015 6 16 57189 0.1414 0.4778 -0.67654 2015 6 17 57190 0.1437 0.4774 -0.67693 2015 6 18 57191 0.1461 0.4770 -0.67726 2015 6 19 57192 0.1484 0.4765 -0.67752 2015 6 20 57193 0.1507 0.4760 -0.67778 2015 6 21 57194 0.1530 0.4754 -0.67804 2015 6 22 57195 0.1553 0.4748 -0.67830 2015 6 23 57196 0.1576 0.4742 -0.67858 2015 6 24 57197 0.1599 0.4736 -0.67887 2015 6 25 57198 0.1622 0.4729 -0.67911 2015 6 26 57199 0.1645 0.4722 -0.67936 2015 6 27 57200 0.1667 0.4714 -0.67957 2015 6 28 57201 0.1690 0.4706 -0.67968 2015 6 29 57202 0.1712 0.4698 -0.67974 2015 6 30 57203 0.1734 0.4689 -0.67979 2015 7 1 57204 0.1756 0.4680 -0.67983 2015 7 2 57205 0.1778 0.4671 -0.67989 2015 7 3 57206 0.1800 0.4661 -0.68003 2015 7 4 57207 0.1821 0.4651 -0.68036 2015 7 5 57208 0.1843 0.4641 -0.68089 2015 7 6 57209 0.1864 0.4630 -0.68158 2015 7 7 57210 0.1885 0.4619 -0.68244 2015 7 8 57211 0.1906 0.4608 -0.68336 2015 7 9 57212 0.1927 0.4596 -0.68426 2015 7 10 57213 0.1947 0.4584 -0.68501 2015 7 11 57214 0.1967 0.4572 -0.68558 2015 7 12 57215 0.1987 0.4559 -0.68595 2015 7 13 57216 0.2007 0.4547 -0.68618 2015 7 14 57217 0.2027 0.4533 -0.68630 2015 7 15 57218 0.2046 0.4520 -0.68633 2015 7 16 57219 0.2065 0.4506 -0.68633 2015 7 17 57220 0.2084 0.4492 -0.68631 2015 7 18 57221 0.2103 0.4477 -0.68629 2015 7 19 57222 0.2121 0.4463 -0.68630 2015 7 20 57223 0.2140 0.4448 -0.68633 2015 7 21 57224 0.2157 0.4432 -0.68641 2015 7 22 57225 0.2175 0.4417 -0.68652 2015 7 23 57226 0.2192 0.4401 -0.68662 2015 7 24 57227 0.2210 0.4385 -0.68672 2015 7 25 57228 0.2226 0.4368 -0.68673 2015 7 26 57229 0.2243 0.4351 -0.68667 2015 7 27 57230 0.2259 0.4335 -0.68655 2015 7 28 57231 0.2275 0.4317 -0.68643 2015 7 29 57232 0.2291 0.4300 -0.68636 2015 7 30 57233 0.2306 0.4282 -0.68637 2015 7 31 57234 0.2321 0.4264 -0.68651 2015 8 1 57235 0.2336 0.4246 -0.68682 2015 8 2 57236 0.2350 0.4228 -0.68734 2015 8 3 57237 0.2364 0.4209 -0.68798 2015 8 4 57238 0.2378 0.4190 -0.68873 2015 8 5 57239 0.2392 0.4171 -0.68947 2015 8 6 57240 0.2405 0.4152 -0.69010 2015 8 7 57241 0.2418 0.4132 -0.69053 2015 8 8 57242 0.2430 0.4112 -0.69086 2015 8 9 57243 0.2442 0.4092 -0.69107 2015 8 10 57244 0.2454 0.4072 -0.69116 2015 8 11 57245 0.2465 0.4052 -0.69121 2015 8 12 57246 0.2476 0.4031 -0.69129 2015 8 13 57247 0.2487 0.4011 -0.69145 2015 8 14 57248 0.2497 0.3990 -0.69158 2015 8 15 57249 0.2507 0.3969 -0.69177 2015 8 16 57250 0.2517 0.3948 -0.69206 2015 8 17 57251 0.2526 0.3926 -0.69238 2015 8 18 57252 0.2535 0.3905 -0.69273 2015 8 19 57253 0.2543 0.3883 -0.69306 2015 8 20 57254 0.2551 0.3861 -0.69334 2015 8 21 57255 0.2559 0.3840 -0.69356 2015 8 22 57256 0.2566 0.3817 -0.69377 2015 8 23 57257 0.2573 0.3795 -0.69393 2015 8 24 57258 0.2580 0.3773 -0.69405 2015 8 25 57259 0.2586 0.3751 -0.69413 2015 8 26 57260 0.2592 0.3728 -0.69423 2015 8 27 57261 0.2597 0.3706 -0.69444 2015 8 28 57262 0.2602 0.3683 -0.69485 2015 8 29 57263 0.2607 0.3660 -0.69552 2015 8 30 57264 0.2611 0.3637 -0.69645 2015 8 31 57265 0.2615 0.3614 -0.69757 2015 9 1 57266 0.2618 0.3591 -0.69868 2015 9 2 57267 0.2621 0.3568 -0.69969 2015 9 3 57268 0.2624 0.3545 -0.70051 2015 9 4 57269 0.2626 0.3522 -0.70118 2015 9 5 57270 0.2627 0.3499 -0.70181 2015 9 6 57271 0.2629 0.3475 -0.70239 2015 9 7 57272 0.2630 0.3452 -0.70292 2015 9 8 57273 0.2630 0.3429 -0.70346 2015 9 9 57274 0.2630 0.3406 -0.70397 2015 9 10 57275 0.2630 0.3382 -0.70453 2015 9 11 57276 0.2629 0.3359 -0.70517 2015 9 12 57277 0.2628 0.3336 -0.70580 2015 9 13 57278 0.2627 0.3312 -0.70641 2015 9 14 57279 0.2625 0.3289 -0.70706 2015 9 15 57280 0.2622 0.3266 -0.70772 2015 9 16 57281 0.2620 0.3242 -0.70839 2015 9 17 57282 0.2616 0.3219 -0.70907 2015 9 18 57283 0.2613 0.3196 -0.70976 2015 9 19 57284 0.2609 0.3173 -0.71042 2015 9 20 57285 0.2604 0.3150 -0.71102 2015 9 21 57286 0.2600 0.3127 -0.71163 2015 9 22 57287 0.2594 0.3104 -0.71228 2015 9 23 57288 0.2589 0.3081 -0.71302 2015 9 24 57289 0.2583 0.3058 -0.71390 2015 9 25 57290 0.2576 0.3035 -0.71505 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) 56906 -93.63 0.30 -14.00 0.04 56907 -93.88 0.10 -13.88 0.06 56908 -94.22 0.10 -13.69 0.06 56909 -94.40 0.30 -13.63 0.07 56910 -94.32 0.18 -13.75 0.08 56911 -94.28 0.18 -13.85 0.08 56912 -94.60 0.18 -13.72 0.08 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 56906 -0.009 0.119 -0.433 0.040 56907 -0.031 0.040 -0.438 0.060 56908 -0.060 0.040 -0.448 0.060 56909 -0.103 0.119 -0.466 0.070 56910 -0.147 0.072 -0.498 0.080 56911 -0.193 0.072 -0.552 0.080 56912 -0.237 0.072 -0.606 0.080 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 (2010).