********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 31 March 2016 Vol. XXIX No. 013 ______________________________________________________________________ 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 24 Mar 2016 at 0000 UTC Beginning 1 July 2015: TAI-UTC = 36.000 000 seconds *********************************************************************** * * * 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 * * * * An additional backup mirror of the daily and Bulletin A EOP data * * is now hosted by NASA's Archive of Space Geodesy Data server at: * * ftp://cddis.gsfc.nasa.gov/pub/products/iers * * Daily EOP data will be uploaded here at 18:00 UTC, and * * Bulletin A EOP data should by available by 20:00 UTC. * * * * 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 16 3 25 57472 -.01322 .00009 0.40840 .00009 -0.069337 0.000013 16 3 26 57473 -.01259 .00009 0.41044 .00009 -0.071394 0.000010 16 3 27 57474 -.01184 .00009 0.41254 .00009 -0.073409 0.000012 16 3 28 57475 -.01105 .00009 0.41449 .00009 -0.075334 0.000013 16 3 29 57476 -.01021 .00009 0.41628 .00009 -0.077144 0.000014 16 3 30 57477 -.00937 .00009 0.41800 .00009 -0.078948 0.000014 16 3 31 57478 -.00865 .00009 0.41971 .00009 -0.080661 0.000015 _______________________________________________________________________ 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 = 0.1111 - 0.1230 cos A + 0.0207 sin A + 0.0009 cos C + 0.0315 sin C y = 0.3679 + 0.0186 cos A + 0.1098 sin A + 0.0315 cos C - 0.0009 sin C UT1-UTC = -0.0801 - 0.00142 (MJD - 57486) - (UT2-UT1) where A = 2*pi*(MJD-57478)/365.25 and C = 2*pi*(MJD-57478)/435. TAI-UTC(MJD 57479) = 36.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57478)**0.80 S t = 0.00025 (MJD-57478)**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) 2016 4 1 57479 -0.0079 0.4213 -0.08243 2016 4 2 57480 -0.0071 0.4229 -0.08424 2016 4 3 57481 -0.0063 0.4245 -0.08613 2016 4 4 57482 -0.0054 0.4260 -0.08814 2016 4 5 57483 -0.0043 0.4275 -0.09029 2016 4 6 57484 -0.0032 0.4289 -0.09254 2016 4 7 57485 -0.0020 0.4304 -0.09485 2016 4 8 57486 -0.0007 0.4319 -0.09714 2016 4 9 57487 0.0006 0.4335 -0.09931 2016 4 10 57488 0.0019 0.4350 -0.10134 2016 4 11 57489 0.0032 0.4365 -0.10324 2016 4 12 57490 0.0046 0.4380 -0.10507 2016 4 13 57491 0.0060 0.4395 -0.10685 2016 4 14 57492 0.0074 0.4409 -0.10863 2016 4 15 57493 0.0088 0.4423 -0.11044 2016 4 16 57494 0.0103 0.4437 -0.11228 2016 4 17 57495 0.0117 0.4451 -0.11418 2016 4 18 57496 0.0133 0.4465 -0.11612 2016 4 19 57497 0.0148 0.4479 -0.11809 2016 4 20 57498 0.0163 0.4493 -0.12005 2016 4 21 57499 0.0179 0.4506 -0.12199 2016 4 22 57500 0.0195 0.4519 -0.12388 2016 4 23 57501 0.0211 0.4532 -0.12568 2016 4 24 57502 0.0227 0.4544 -0.12740 2016 4 25 57503 0.0244 0.4556 -0.12905 2016 4 26 57504 0.0260 0.4568 -0.13064 2016 4 27 57505 0.0277 0.4579 -0.13219 2016 4 28 57506 0.0294 0.4591 -0.13373 2016 4 29 57507 0.0312 0.4602 -0.13532 2016 4 30 57508 0.0329 0.4613 -0.13700 2016 5 1 57509 0.0347 0.4623 -0.13881 2016 5 2 57510 0.0365 0.4633 -0.14078 2016 5 3 57511 0.0383 0.4643 -0.14289 2016 5 4 57512 0.0402 0.4653 -0.14510 2016 5 5 57513 0.0420 0.4663 -0.14733 2016 5 6 57514 0.0439 0.4672 -0.14949 2016 5 7 57515 0.0458 0.4681 -0.15151 2016 5 8 57516 0.0477 0.4689 -0.15334 2016 5 9 57517 0.0496 0.4697 -0.15501 2016 5 10 57518 0.0516 0.4705 -0.15653 2016 5 11 57519 0.0535 0.4713 -0.15798 2016 5 12 57520 0.0555 0.4721 -0.15939 2016 5 13 57521 0.0575 0.4728 -0.16080 2016 5 14 57522 0.0595 0.4735 -0.16224 2016 5 15 57523 0.0615 0.4741 -0.16370 2016 5 16 57524 0.0635 0.4747 -0.16519 2016 5 17 57525 0.0655 0.4753 -0.16668 2016 5 18 57526 0.0676 0.4759 -0.16816 2016 5 19 57527 0.0696 0.4764 -0.16958 2016 5 20 57528 0.0717 0.4769 -0.17094 2016 5 21 57529 0.0737 0.4774 -0.17223 2016 5 22 57530 0.0758 0.4778 -0.17344 2016 5 23 57531 0.0779 0.4782 -0.17459 2016 5 24 57532 0.0800 0.4786 -0.17569 2016 5 25 57533 0.0821 0.4790 -0.17680 2016 5 26 57534 0.0842 0.4793 -0.17794 2016 5 27 57535 0.0863 0.4796 -0.17916 2016 5 28 57536 0.0884 0.4798 -0.18050 2016 5 29 57537 0.0906 0.4800 -0.18199 2016 5 30 57538 0.0927 0.4802 -0.18361 2016 5 31 57539 0.0948 0.4804 -0.18534 2016 6 1 57540 0.0969 0.4805 -0.18713 2016 6 2 57541 0.0991 0.4806 -0.18891 2016 6 3 57542 0.1012 0.4806 -0.19058 2016 6 4 57543 0.1033 0.4807 -0.19210 2016 6 5 57544 0.1055 0.4806 -0.19344 2016 6 6 57545 0.1076 0.4806 -0.19464 2016 6 7 57546 0.1098 0.4805 -0.19575 2016 6 8 57547 0.1119 0.4804 -0.19682 2016 6 9 57548 0.1140 0.4803 -0.19789 2016 6 10 57549 0.1162 0.4801 -0.19899 2016 6 11 57550 0.1183 0.4799 -0.20010 2016 6 12 57551 0.1204 0.4797 -0.20123 2016 6 13 57552 0.1225 0.4794 -0.20234 2016 6 14 57553 0.1247 0.4791 -0.20341 2016 6 15 57554 0.1268 0.4788 -0.20442 2016 6 16 57555 0.1289 0.4784 -0.20535 2016 6 17 57556 0.1310 0.4780 -0.20617 2016 6 18 57557 0.1331 0.4776 -0.20689 2016 6 19 57558 0.1351 0.4771 -0.20753 2016 6 20 57559 0.1372 0.4767 -0.20809 2016 6 21 57560 0.1393 0.4761 -0.20862 2016 6 22 57561 0.1413 0.4756 -0.20916 2016 6 23 57562 0.1434 0.4750 -0.20975 2016 6 24 57563 0.1454 0.4744 -0.21044 2016 6 25 57564 0.1474 0.4737 -0.21125 2016 6 26 57565 0.1495 0.4731 -0.21219 2016 6 27 57566 0.1515 0.4724 -0.21324 2016 6 28 57567 0.1534 0.4716 -0.21435 2016 6 29 57568 0.1554 0.4709 -0.21546 2016 6 30 57569 0.1574 0.4701 -0.21650 2016 7 1 57570 0.1593 0.4692 -0.21743 2016 7 2 57571 0.1613 0.4684 -0.21822 2016 7 3 57572 0.1632 0.4675 -0.21888 2016 7 4 57573 0.1651 0.4666 -0.21944 2016 7 5 57574 0.1670 0.4656 -0.21997 2016 7 6 57575 0.1688 0.4647 -0.22051 2016 7 7 57576 0.1707 0.4637 -0.22109 2016 7 8 57577 0.1725 0.4626 -0.22171 2016 7 9 57578 0.1743 0.4616 -0.22236 2016 7 10 57579 0.1761 0.4605 -0.22302 2016 7 11 57580 0.1779 0.4594 -0.22366 2016 7 12 57581 0.1796 0.4582 -0.22427 2016 7 13 57582 0.1813 0.4571 -0.22482 2016 7 14 57583 0.1831 0.4559 -0.22529 2016 7 15 57584 0.1847 0.4547 -0.22569 2016 7 16 57585 0.1864 0.4534 -0.22601 2016 7 17 57586 0.1881 0.4522 -0.22628 2016 7 18 57587 0.1897 0.4509 -0.22656 2016 7 19 57588 0.1913 0.4496 -0.22685 2016 7 20 57589 0.1928 0.4482 -0.22720 2016 7 21 57590 0.1944 0.4469 -0.22768 2016 7 22 57591 0.1959 0.4455 -0.22829 2016 7 23 57592 0.1974 0.4441 -0.22907 2016 7 24 57593 0.1989 0.4426 -0.22997 2016 7 25 57594 0.2003 0.4412 -0.23096 2016 7 26 57595 0.2018 0.4397 -0.23196 2016 7 27 57596 0.2031 0.4382 -0.23291 2016 7 28 57597 0.2045 0.4367 -0.23377 2016 7 29 57598 0.2058 0.4351 -0.23450 2016 7 30 57599 0.2072 0.4336 -0.23512 2016 7 31 57600 0.2084 0.4320 -0.23565 2016 8 1 57601 0.2097 0.4304 -0.23615 2016 8 2 57602 0.2109 0.4288 -0.23667 2016 8 3 57603 0.2121 0.4271 -0.23725 2016 8 4 57604 0.2133 0.4255 -0.23790 2016 8 5 57605 0.2144 0.4238 -0.23862 2016 8 6 57606 0.2155 0.4221 -0.23938 2016 8 7 57607 0.2166 0.4204 -0.24015 2016 8 8 57608 0.2176 0.4187 -0.24091 2016 8 9 57609 0.2186 0.4169 -0.24164 2016 8 10 57610 0.2196 0.4152 -0.24231 2016 8 11 57611 0.2206 0.4134 -0.24291 2016 8 12 57612 0.2215 0.4116 -0.24345 2016 8 13 57613 0.2224 0.4098 -0.24395 2016 8 14 57614 0.2232 0.4080 -0.24443 2016 8 15 57615 0.2240 0.4062 -0.24492 2016 8 16 57616 0.2248 0.4044 -0.24548 2016 8 17 57617 0.2255 0.4025 -0.24616 2016 8 18 57618 0.2263 0.4006 -0.24700 2016 8 19 57619 0.2269 0.3988 -0.24802 2016 8 20 57620 0.2276 0.3969 -0.24921 2016 8 21 57621 0.2282 0.3950 -0.25053 2016 8 22 57622 0.2288 0.3931 -0.25189 2016 8 23 57623 0.2293 0.3912 -0.25322 2016 8 24 57624 0.2298 0.3893 -0.25445 2016 8 25 57625 0.2303 0.3874 -0.25556 2016 8 26 57626 0.2308 0.3854 -0.25654 2016 8 27 57627 0.2312 0.3835 -0.25744 2016 8 28 57628 0.2315 0.3815 -0.25829 2016 8 29 57629 0.2319 0.3796 -0.25916 2016 8 30 57630 0.2322 0.3776 -0.26008 2016 8 31 57631 0.2324 0.3757 -0.26109 2016 9 1 57632 0.2326 0.3737 -0.26218 2016 9 2 57633 0.2328 0.3717 -0.26334 2016 9 3 57634 0.2330 0.3698 -0.26454 2016 9 4 57635 0.2331 0.3678 -0.26575 2016 9 5 57636 0.2332 0.3658 -0.26694 2016 9 6 57637 0.2332 0.3639 -0.26808 2016 9 7 57638 0.2333 0.3619 -0.26917 2016 9 8 57639 0.2332 0.3599 -0.27019 2016 9 9 57640 0.2332 0.3579 -0.27117 2016 9 10 57641 0.2331 0.3560 -0.27211 2016 9 11 57642 0.2330 0.3540 -0.27307 2016 9 12 57643 0.2328 0.3520 -0.27409 2016 9 13 57644 0.2326 0.3500 -0.27520 2016 9 14 57645 0.2323 0.3481 -0.27647 2016 9 15 57646 0.2321 0.3461 -0.27793 2016 9 16 57647 0.2318 0.3442 -0.27959 2016 9 17 57648 0.2314 0.3422 -0.28141 2016 9 18 57649 0.2310 0.3403 -0.28334 2016 9 19 57650 0.2306 0.3383 -0.28528 2016 9 20 57651 0.2302 0.3364 -0.28713 2016 9 21 57652 0.2297 0.3345 -0.28886 2016 9 22 57653 0.2292 0.3325 -0.29043 2016 9 23 57654 0.2286 0.3306 -0.29188 2016 9 24 57655 0.2280 0.3287 -0.29327 2016 9 25 57656 0.2274 0.3268 -0.29463 2016 9 26 57657 0.2267 0.3249 -0.29603 2016 9 27 57658 0.2260 0.3231 -0.29750 2016 9 28 57659 0.2253 0.3212 -0.29904 2016 9 29 57660 0.2246 0.3193 -0.30064 2016 9 30 57661 0.2238 0.3175 -0.30227 2016 10 1 57662 0.2229 0.3157 -0.30390 2016 10 2 57663 0.2221 0.3138 -0.30550 2016 10 3 57664 0.2212 0.3120 -0.30702 2016 10 4 57665 0.2203 0.3103 -0.30845 2016 10 5 57666 0.2193 0.3085 -0.30976 2016 10 6 57667 0.2183 0.3067 -0.31096 2016 10 7 57668 0.2173 0.3050 -0.31208 2016 10 8 57669 0.2162 0.3032 -0.31314 2016 10 9 57670 0.2152 0.3015 -0.31421 2016 10 10 57671 0.2140 0.2998 -0.31535 2016 10 11 57672 0.2129 0.2981 -0.31661 2016 10 12 57673 0.2117 0.2965 -0.31807 2016 10 13 57674 0.2105 0.2948 -0.31975 2016 10 14 57675 0.2093 0.2932 -0.32164 2016 10 15 57676 0.2080 0.2916 -0.32371 2016 10 16 57677 0.2067 0.2900 -0.32586 2016 10 17 57678 0.2054 0.2884 -0.32798 2016 10 18 57679 0.2040 0.2869 -0.32999 2016 10 19 57680 0.2027 0.2854 -0.33185 2016 10 20 57681 0.2013 0.2839 -0.33356 2016 10 21 57682 0.1998 0.2824 -0.33517 2016 10 22 57683 0.1984 0.2809 -0.33675 2016 10 23 57684 0.1969 0.2795 -0.33834 2016 10 24 57685 0.1954 0.2780 -0.34000 2016 10 25 57686 0.1938 0.2766 -0.34174 2016 10 26 57687 0.1923 0.2753 -0.34354 2016 10 27 57688 0.1907 0.2739 -0.34539 2016 10 28 57689 0.1891 0.2726 -0.34724 2016 10 29 57690 0.1874 0.2713 -0.34907 2016 10 30 57691 0.1858 0.2700 -0.35085 2016 10 31 57692 0.1841 0.2688 -0.35255 2016 11 1 57693 0.1824 0.2675 -0.35419 2016 11 2 57694 0.1807 0.2664 -0.35576 2016 11 3 57695 0.1789 0.2652 -0.35726 2016 11 4 57696 0.1772 0.2640 -0.35871 2016 11 5 57697 0.1754 0.2629 -0.36014 2016 11 6 57698 0.1736 0.2618 -0.36162 2016 11 7 57699 0.1718 0.2608 -0.36325 2016 11 8 57700 0.1699 0.2597 -0.36504 2016 11 9 57701 0.1681 0.2587 -0.36704 2016 11 10 57702 0.1662 0.2577 -0.36923 2016 11 11 57703 0.1643 0.2568 -0.37159 2016 11 12 57704 0.1624 0.2559 -0.37406 2016 11 13 57705 0.1604 0.2550 -0.37661 2016 11 14 57706 0.1585 0.2541 -0.37905 2016 11 15 57707 0.1565 0.2533 -0.38131 2016 11 16 57708 0.1546 0.2525 -0.38338 2016 11 17 57709 0.1526 0.2517 -0.38522 2016 11 18 57710 0.1506 0.2510 -0.38696 2016 11 19 57711 0.1486 0.2502 -0.38868 2016 11 20 57712 0.1465 0.2496 -0.39043 2016 11 21 57713 0.1445 0.2489 -0.39226 2016 11 22 57714 0.1424 0.2483 -0.39410 2016 11 23 57715 0.1404 0.2477 -0.39592 2016 11 24 57716 0.1383 0.2471 -0.39775 2016 11 25 57717 0.1362 0.2466 -0.39957 2016 11 26 57718 0.1341 0.2461 -0.40131 2016 11 27 57719 0.1320 0.2457 -0.40294 2016 11 28 57720 0.1299 0.2452 -0.40444 2016 11 29 57721 0.1278 0.2448 -0.40590 2016 11 30 57722 0.1257 0.2445 -0.40732 2016 12 1 57723 0.1236 0.2441 -0.40871 2016 12 2 57724 0.1215 0.2438 -0.41009 2016 12 3 57725 0.1193 0.2436 -0.41151 2016 12 4 57726 0.1172 0.2433 -0.41294 2016 12 5 57727 0.1150 0.2431 -0.41450 2016 12 6 57728 0.1129 0.2429 -0.41616 2016 12 7 57729 0.1108 0.2428 -0.41797 2016 12 8 57730 0.1086 0.2427 -0.41997 2016 12 9 57731 0.1065 0.2426 -0.42206 2016 12 10 57732 0.1043 0.2426 -0.42418 2016 12 11 57733 0.1022 0.2426 -0.42635 2016 12 12 57734 0.1000 0.2426 -0.42835 2016 12 13 57735 0.0979 0.2427 -0.43020 2016 12 14 57736 0.0957 0.2428 -0.43191 2016 12 15 57737 0.0936 0.2429 -0.43349 2016 12 16 57738 0.0914 0.2430 -0.43502 2016 12 17 57739 0.0893 0.2432 -0.43652 2016 12 18 57740 0.0872 0.2434 -0.43804 2016 12 19 57741 0.0850 0.2437 -0.43955 2016 12 20 57742 0.0829 0.2440 -0.44115 2016 12 21 57743 0.0808 0.2443 -0.44273 2016 12 22 57744 0.0787 0.2447 -0.44425 2016 12 23 57745 0.0766 0.2450 -0.44576 2016 12 24 57746 0.0745 0.2455 -0.44711 2016 12 25 57747 0.0724 0.2459 -0.44843 2016 12 26 57748 0.0703 0.2464 -0.44967 2016 12 27 57749 0.0682 0.2469 -0.45084 2016 12 28 57750 0.0662 0.2474 -0.45190 2016 12 29 57751 0.0641 0.2480 -0.45298 2016 12 30 57752 0.0621 0.2486 -0.45411 2016 12 31 57753 0.0601 0.2492 -0.45532 2017 1 1 57754 0.0581 0.2499 -0.45661 2017 1 2 57755 0.0561 0.2506 -0.45806 2017 1 3 57756 0.0541 0.2513 -0.45969 2017 1 4 57757 0.0521 0.2521 -0.46156 2017 1 5 57758 0.0502 0.2529 -0.46361 2017 1 6 57759 0.0482 0.2537 -0.46577 2017 1 7 57760 0.0463 0.2545 -0.46791 2017 1 8 57761 0.0444 0.2554 -0.46994 2017 1 9 57762 0.0425 0.2563 -0.47191 2017 1 10 57763 0.0406 0.2573 -0.47367 2017 1 11 57764 0.0387 0.2582 -0.47538 2017 1 12 57765 0.0369 0.2592 -0.47698 2017 1 13 57766 0.0351 0.2602 -0.47853 2017 1 14 57767 0.0333 0.2613 -0.48009 2017 1 15 57768 0.0315 0.2624 -0.48172 2017 1 16 57769 0.0297 0.2635 -0.48341 2017 1 17 57770 0.0280 0.2646 -0.48514 2017 1 18 57771 0.0263 0.2657 -0.48690 2017 1 19 57772 0.0246 0.2669 -0.48864 2017 1 20 57773 0.0229 0.2681 -0.49028 2017 1 21 57774 0.0213 0.2694 -0.49177 2017 1 22 57775 0.0196 0.2706 -0.49312 2017 1 23 57776 0.0180 0.2719 -0.49434 2017 1 24 57777 0.0164 0.2732 -0.49539 2017 1 25 57778 0.0149 0.2745 -0.49640 2017 1 26 57779 0.0134 0.2759 -0.49738 2017 1 27 57780 0.0118 0.2773 -0.49830 2017 1 28 57781 0.0104 0.2787 -0.49924 2017 1 29 57782 0.0089 0.2801 -0.50021 2017 1 30 57783 0.0075 0.2815 -0.50128 2017 1 31 57784 0.0061 0.2830 -0.50260 2017 2 1 57785 0.0047 0.2845 -0.50393 2017 2 2 57786 0.0034 0.2860 -0.50537 2017 2 3 57787 0.0020 0.2875 -0.50686 2017 2 4 57788 0.0007 0.2891 -0.50831 2017 2 5 57789 -0.0005 0.2906 -0.50968 2017 2 6 57790 -0.0017 0.2922 -0.51098 2017 2 7 57791 -0.0030 0.2938 -0.51230 2017 2 8 57792 -0.0041 0.2954 -0.51360 2017 2 9 57793 -0.0053 0.2971 -0.51487 2017 2 10 57794 -0.0064 0.2987 -0.51619 2017 2 11 57795 -0.0075 0.3004 -0.51757 2017 2 12 57796 -0.0085 0.3021 -0.51905 2017 2 13 57797 -0.0095 0.3038 -0.52054 2017 2 14 57798 -0.0105 0.3055 -0.52205 2017 2 15 57799 -0.0115 0.3073 -0.52353 2017 2 16 57800 -0.0124 0.3090 -0.52500 2017 2 17 57801 -0.0133 0.3108 -0.52639 2017 2 18 57802 -0.0142 0.3126 -0.52775 2017 2 19 57803 -0.0150 0.3144 -0.52898 2017 2 20 57804 -0.0158 0.3162 -0.53020 2017 2 21 57805 -0.0165 0.3180 -0.53136 2017 2 22 57806 -0.0173 0.3198 -0.53255 2017 2 23 57807 -0.0180 0.3217 -0.53382 2017 2 24 57808 -0.0186 0.3235 -0.53528 2017 2 25 57809 -0.0192 0.3254 -0.53687 2017 2 26 57810 -0.0198 0.3272 -0.53869 2017 2 27 57811 -0.0204 0.3291 -0.54067 2017 2 28 57812 -0.0209 0.3310 -0.54278 2017 3 1 57813 -0.0214 0.3329 -0.54495 2017 3 2 57814 -0.0218 0.3348 -0.54715 2017 3 3 57815 -0.0223 0.3367 -0.54925 2017 3 4 57816 -0.0227 0.3386 -0.55122 2017 3 5 57817 -0.0230 0.3405 -0.55306 2017 3 6 57818 -0.0233 0.3425 -0.55478 2017 3 7 57819 -0.0236 0.3444 -0.55639 2017 3 8 57820 -0.0238 0.3463 -0.55789 2017 3 9 57821 -0.0240 0.3483 -0.55940 2017 3 10 57822 -0.0242 0.3502 -0.56093 2017 3 11 57823 -0.0243 0.3521 -0.56253 2017 3 12 57824 -0.0244 0.3541 -0.56412 2017 3 13 57825 -0.0245 0.3560 -0.56571 2017 3 14 57826 -0.0245 0.3580 -0.56730 2017 3 15 57827 -0.0245 0.3599 -0.56888 2017 3 16 57828 -0.0245 0.3619 -0.57039 2017 3 17 57829 -0.0244 0.3638 -0.57187 2017 3 18 57830 -0.0243 0.3658 -0.57329 2017 3 19 57831 -0.0242 0.3677 -0.57459 2017 3 20 57832 -0.0240 0.3696 -0.57585 2017 3 21 57833 -0.0238 0.3716 -0.57706 2017 3 22 57834 -0.0235 0.3735 -0.57826 2017 3 23 57835 -0.0232 0.3754 -0.57948 2017 3 24 57836 -0.0229 0.3774 -0.58070 2017 3 25 57837 -0.0226 0.3793 -0.58200 2017 3 26 57838 -0.0222 0.3812 -0.58345 2017 3 27 57839 -0.0217 0.3831 -0.58501 2017 3 28 57840 -0.0213 0.3850 -0.58674 2017 3 29 57841 -0.0208 0.3869 -0.58854 2017 3 30 57842 -0.0202 0.3888 -0.59041 2017 3 31 57843 -0.0197 0.3907 -0.59215 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) 57456 -92.98 0.30 -11.69 0.02 57457 -92.65 0.30 -11.45 0.02 57458 -92.71 0.30 -11.39 0.02 57459 -93.09 0.30 -11.53 0.15 57460 -93.48 0.30 -11.72 0.15 57461 -93.64 0.30 -11.88 0.15 57462 -93.53 0.30 -12.03 0.15 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57456 0.037 0.119 -0.076 0.020 57457 0.025 0.119 -0.058 0.020 57458 0.012 0.119 -0.041 0.020 57459 0.009 0.119 -0.033 0.150 57460 0.018 0.119 -0.028 0.150 57461 0.022 0.119 -0.013 0.150 57462 0.015 0.119 0.016 0.150 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).