********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 25 February 2016 Vol. XXIX No. 008 ______________________________________________________________________ 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 31 Jan 2016 at 0000 UTC = -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 2 19 57437 -.01732 .00009 0.33233 .00009 -0.002118 0.000022 16 2 20 57438 -.01850 .00009 0.33399 .00009 -0.003461 0.000021 16 2 21 57439 -.01929 .00009 0.33560 .00009 -0.004845 0.000020 16 2 22 57440 -.01998 .00009 0.33761 .00009 -0.006432 0.000022 16 2 23 57441 -.02082 .00009 0.33982 .00009 -0.008076 0.000022 16 2 24 57442 -.02149 .00009 0.34206 .00009 -0.009817 0.000022 16 2 25 57443 -.02186 .00009 0.34442 .00009 -0.011627 0.000019 _______________________________________________________________________ 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 = 0.0941 - 0.1023 cos A - 0.0348 sin A - 0.0181 cos C + 0.0067 sin C y = 0.3666 - 0.0326 cos A + 0.0870 sin A + 0.0067 cos C + 0.0181 sin C UT1-UTC = -0.0344 - 0.00137 (MJD - 57451) - (UT2-UT1) where A = 2*pi*(MJD-57443)/365.25 and C = 2*pi*(MJD-57443)/435. TAI-UTC(MJD 57444) = 36.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57443)**0.80 S t = 0.00025 (MJD-57443)**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 2 26 57444 -0.0223 0.3467 -0.01346 2016 2 27 57445 -0.0226 0.3488 -0.01525 2016 2 28 57446 -0.0228 0.3508 -0.01700 2016 2 29 57447 -0.0230 0.3527 -0.01871 2016 3 1 57448 -0.0231 0.3545 -0.02037 2016 3 2 57449 -0.0232 0.3564 -0.02199 2016 3 3 57450 -0.0233 0.3582 -0.02358 2016 3 4 57451 -0.0234 0.3601 -0.02518 2016 3 5 57452 -0.0233 0.3619 -0.02686 2016 3 6 57453 -0.0232 0.3638 -0.02867 2016 3 7 57454 -0.0232 0.3657 -0.03066 2016 3 8 57455 -0.0231 0.3676 -0.03284 2016 3 9 57456 -0.0229 0.3695 -0.03520 2016 3 10 57457 -0.0227 0.3713 -0.03764 2016 3 11 57458 -0.0224 0.3732 -0.04007 2016 3 12 57459 -0.0221 0.3750 -0.04239 2016 3 13 57460 -0.0218 0.3768 -0.04454 2016 3 14 57461 -0.0214 0.3786 -0.04652 2016 3 15 57462 -0.0211 0.3804 -0.04835 2016 3 16 57463 -0.0206 0.3822 -0.05008 2016 3 17 57464 -0.0202 0.3841 -0.05177 2016 3 18 57465 -0.0197 0.3859 -0.05347 2016 3 19 57466 -0.0192 0.3877 -0.05519 2016 3 20 57467 -0.0187 0.3895 -0.05695 2016 3 21 57468 -0.0181 0.3912 -0.05877 2016 3 22 57469 -0.0175 0.3930 -0.06065 2016 3 23 57470 -0.0169 0.3948 -0.06257 2016 3 24 57471 -0.0162 0.3965 -0.06452 2016 3 25 57472 -0.0155 0.3983 -0.06648 2016 3 26 57473 -0.0148 0.4000 -0.06842 2016 3 27 57474 -0.0140 0.4017 -0.07032 2016 3 28 57475 -0.0132 0.4034 -0.07217 2016 3 29 57476 -0.0124 0.4051 -0.07397 2016 3 30 57477 -0.0115 0.4068 -0.07575 2016 3 31 57478 -0.0106 0.4085 -0.07756 2016 4 1 57479 -0.0097 0.4102 -0.07942 2016 4 2 57480 -0.0088 0.4118 -0.08141 2016 4 3 57481 -0.0078 0.4134 -0.08356 2016 4 4 57482 -0.0068 0.4151 -0.08592 2016 4 5 57483 -0.0057 0.4167 -0.08848 2016 4 6 57484 -0.0047 0.4183 -0.09121 2016 4 7 57485 -0.0036 0.4198 -0.09401 2016 4 8 57486 -0.0025 0.4214 -0.09679 2016 4 9 57487 -0.0013 0.4229 -0.09945 2016 4 10 57488 -0.0001 0.4245 -0.10192 2016 4 11 57489 0.0011 0.4260 -0.10421 2016 4 12 57490 0.0023 0.4275 -0.10633 2016 4 13 57491 0.0036 0.4289 -0.10834 2016 4 14 57492 0.0049 0.4304 -0.11030 2016 4 15 57493 0.0062 0.4318 -0.11226 2016 4 16 57494 0.0075 0.4332 -0.11425 2016 4 17 57495 0.0089 0.4346 -0.11627 2016 4 18 57496 0.0103 0.4360 -0.11833 2016 4 19 57497 0.0117 0.4374 -0.12040 2016 4 20 57498 0.0132 0.4387 -0.12247 2016 4 21 57499 0.0146 0.4400 -0.12450 2016 4 22 57500 0.0161 0.4413 -0.12647 2016 4 23 57501 0.0176 0.4426 -0.12835 2016 4 24 57502 0.0192 0.4438 -0.13014 2016 4 25 57503 0.0207 0.4450 -0.13182 2016 4 26 57504 0.0223 0.4462 -0.13341 2016 4 27 57505 0.0239 0.4474 -0.13495 2016 4 28 57506 0.0256 0.4486 -0.13649 2016 4 29 57507 0.0272 0.4497 -0.13806 2016 4 30 57508 0.0289 0.4508 -0.13973 2016 5 1 57509 0.0306 0.4519 -0.14153 2016 5 2 57510 0.0323 0.4529 -0.14349 2016 5 3 57511 0.0340 0.4540 -0.14560 2016 5 4 57512 0.0358 0.4550 -0.14782 2016 5 5 57513 0.0375 0.4560 -0.15007 2016 5 6 57514 0.0393 0.4569 -0.15224 2016 5 7 57515 0.0411 0.4578 -0.15428 2016 5 8 57516 0.0429 0.4587 -0.15613 2016 5 9 57517 0.0448 0.4596 -0.15781 2016 5 10 57518 0.0466 0.4604 -0.15935 2016 5 11 57519 0.0485 0.4613 -0.16081 2016 5 12 57520 0.0504 0.4621 -0.16224 2016 5 13 57521 0.0522 0.4628 -0.16369 2016 5 14 57522 0.0542 0.4636 -0.16515 2016 5 15 57523 0.0561 0.4643 -0.16663 2016 5 16 57524 0.0580 0.4649 -0.16812 2016 5 17 57525 0.0600 0.4656 -0.16960 2016 5 18 57526 0.0619 0.4662 -0.17105 2016 5 19 57527 0.0639 0.4668 -0.17243 2016 5 20 57528 0.0659 0.4674 -0.17373 2016 5 21 57529 0.0678 0.4679 -0.17493 2016 5 22 57530 0.0698 0.4684 -0.17605 2016 5 23 57531 0.0718 0.4689 -0.17708 2016 5 24 57532 0.0739 0.4693 -0.17805 2016 5 25 57533 0.0759 0.4697 -0.17899 2016 5 26 57534 0.0779 0.4701 -0.17996 2016 5 27 57535 0.0800 0.4705 -0.18100 2016 5 28 57536 0.0820 0.4708 -0.18215 2016 5 29 57537 0.0840 0.4711 -0.18343 2016 5 30 57538 0.0861 0.4713 -0.18486 2016 5 31 57539 0.0882 0.4716 -0.18640 2016 6 1 57540 0.0902 0.4718 -0.18801 2016 6 2 57541 0.0923 0.4719 -0.18960 2016 6 3 57542 0.0944 0.4721 -0.19110 2016 6 4 57543 0.0964 0.4722 -0.19246 2016 6 5 57544 0.0985 0.4723 -0.19365 2016 6 6 57545 0.1006 0.4723 -0.19470 2016 6 7 57546 0.1026 0.4723 -0.19567 2016 6 8 57547 0.1047 0.4723 -0.19659 2016 6 9 57548 0.1068 0.4723 -0.19753 2016 6 10 57549 0.1088 0.4722 -0.19848 2016 6 11 57550 0.1109 0.4721 -0.19947 2016 6 12 57551 0.1130 0.4719 -0.20046 2016 6 13 57552 0.1150 0.4718 -0.20146 2016 6 14 57553 0.1171 0.4716 -0.20244 2016 6 15 57554 0.1192 0.4713 -0.20336 2016 6 16 57555 0.1212 0.4711 -0.20421 2016 6 17 57556 0.1233 0.4708 -0.20498 2016 6 18 57557 0.1253 0.4704 -0.20565 2016 6 19 57558 0.1273 0.4701 -0.20625 2016 6 20 57559 0.1294 0.4697 -0.20678 2016 6 21 57560 0.1314 0.4693 -0.20728 2016 6 22 57561 0.1334 0.4689 -0.20779 2016 6 23 57562 0.1354 0.4684 -0.20837 2016 6 24 57563 0.1374 0.4679 -0.20905 2016 6 25 57564 0.1394 0.4673 -0.20986 2016 6 26 57565 0.1413 0.4668 -0.21081 2016 6 27 57566 0.1433 0.4662 -0.21187 2016 6 28 57567 0.1452 0.4656 -0.21299 2016 6 29 57568 0.1472 0.4649 -0.21412 2016 6 30 57569 0.1491 0.4642 -0.21519 2016 7 1 57570 0.1510 0.4635 -0.21615 2016 7 2 57571 0.1529 0.4628 -0.21697 2016 7 3 57572 0.1548 0.4620 -0.21765 2016 7 4 57573 0.1567 0.4612 -0.21825 2016 7 5 57574 0.1585 0.4604 -0.21881 2016 7 6 57575 0.1604 0.4596 -0.21938 2016 7 7 57576 0.1622 0.4587 -0.21999 2016 7 8 57577 0.1640 0.4578 -0.22065 2016 7 9 57578 0.1658 0.4568 -0.22134 2016 7 10 57579 0.1676 0.4559 -0.22204 2016 7 11 57580 0.1693 0.4549 -0.22273 2016 7 12 57581 0.1711 0.4539 -0.22339 2016 7 13 57582 0.1728 0.4529 -0.22399 2016 7 14 57583 0.1745 0.4518 -0.22452 2016 7 15 57584 0.1762 0.4507 -0.22497 2016 7 16 57585 0.1778 0.4496 -0.22535 2016 7 17 57586 0.1795 0.4485 -0.22568 2016 7 18 57587 0.1811 0.4473 -0.22598 2016 7 19 57588 0.1827 0.4461 -0.22631 2016 7 20 57589 0.1842 0.4449 -0.22670 2016 7 21 57590 0.1858 0.4437 -0.22720 2016 7 22 57591 0.1873 0.4424 -0.22785 2016 7 23 57592 0.1888 0.4411 -0.22865 2016 7 24 57593 0.1903 0.4398 -0.22959 2016 7 25 57594 0.1918 0.4385 -0.23060 2016 7 26 57595 0.1932 0.4372 -0.23163 2016 7 27 57596 0.1946 0.4358 -0.23261 2016 7 28 57597 0.1960 0.4344 -0.23350 2016 7 29 57598 0.1973 0.4330 -0.23426 2016 7 30 57599 0.1987 0.4316 -0.23490 2016 7 31 57600 0.2000 0.4301 -0.23546 2016 8 1 57601 0.2012 0.4287 -0.23599 2016 8 2 57602 0.2025 0.4272 -0.23653 2016 8 3 57603 0.2037 0.4257 -0.23713 2016 8 4 57604 0.2049 0.4242 -0.23780 2016 8 5 57605 0.2061 0.4226 -0.23854 2016 8 6 57606 0.2072 0.4211 -0.23931 2016 8 7 57607 0.2083 0.4195 -0.24009 2016 8 8 57608 0.2094 0.4179 -0.24086 2016 8 9 57609 0.2104 0.4163 -0.24158 2016 8 10 57610 0.2114 0.4147 -0.24224 2016 8 11 57611 0.2124 0.4130 -0.24284 2016 8 12 57612 0.2134 0.4114 -0.24336 2016 8 13 57613 0.2143 0.4097 -0.24383 2016 8 14 57614 0.2152 0.4080 -0.24427 2016 8 15 57615 0.2161 0.4063 -0.24473 2016 8 16 57616 0.2169 0.4046 -0.24524 2016 8 17 57617 0.2177 0.4029 -0.24587 2016 8 18 57618 0.2185 0.4012 -0.24665 2016 8 19 57619 0.2192 0.3994 -0.24761 2016 8 20 57620 0.2199 0.3977 -0.24873 2016 8 21 57621 0.2206 0.3959 -0.24996 2016 8 22 57622 0.2212 0.3942 -0.25124 2016 8 23 57623 0.2218 0.3924 -0.25247 2016 8 24 57624 0.2224 0.3906 -0.25360 2016 8 25 57625 0.2229 0.3888 -0.25458 2016 8 26 57626 0.2235 0.3870 -0.25544 2016 8 27 57627 0.2239 0.3852 -0.25618 2016 8 28 57628 0.2244 0.3833 -0.25687 2016 8 29 57629 0.2248 0.3815 -0.25755 2016 8 30 57630 0.2251 0.3797 -0.25828 2016 8 31 57631 0.2255 0.3778 -0.25908 2016 9 1 57632 0.2258 0.3760 -0.25995 2016 9 2 57633 0.2261 0.3741 -0.26090 2016 9 3 57634 0.2263 0.3723 -0.26189 2016 9 4 57635 0.2265 0.3704 -0.26291 2016 9 5 57636 0.2267 0.3686 -0.26395 2016 9 6 57637 0.2268 0.3667 -0.26497 2016 9 7 57638 0.2269 0.3648 -0.26597 2016 9 8 57639 0.2270 0.3630 -0.26695 2016 9 9 57640 0.2270 0.3611 -0.26790 2016 9 10 57641 0.2270 0.3592 -0.26886 2016 9 11 57642 0.2270 0.3574 -0.26986 2016 9 12 57643 0.2269 0.3555 -0.27093 2016 9 13 57644 0.2268 0.3537 -0.27211 2016 9 14 57645 0.2267 0.3518 -0.27345 2016 9 15 57646 0.2265 0.3499 -0.27498 2016 9 16 57647 0.2263 0.3481 -0.27671 2016 9 17 57648 0.2261 0.3462 -0.27858 2016 9 18 57649 0.2258 0.3444 -0.28055 2016 9 19 57650 0.2255 0.3425 -0.28251 2016 9 20 57651 0.2251 0.3407 -0.28439 2016 9 21 57652 0.2248 0.3388 -0.28614 2016 9 22 57653 0.2243 0.3370 -0.28774 2016 9 23 57654 0.2239 0.3352 -0.28924 2016 9 24 57655 0.2234 0.3334 -0.29068 2016 9 25 57656 0.2229 0.3316 -0.29213 2016 9 26 57657 0.2224 0.3298 -0.29362 2016 9 27 57658 0.2218 0.3280 -0.29518 2016 9 28 57659 0.2212 0.3262 -0.29682 2016 9 29 57660 0.2206 0.3244 -0.29853 2016 9 30 57661 0.2199 0.3226 -0.30029 2016 10 1 57662 0.2192 0.3209 -0.30206 2016 10 2 57663 0.2185 0.3191 -0.30382 2016 10 3 57664 0.2177 0.3174 -0.30551 2016 10 4 57665 0.2169 0.3157 -0.30711 2016 10 5 57666 0.2161 0.3140 -0.30864 2016 10 6 57667 0.2152 0.3123 -0.31008 2016 10 7 57668 0.2143 0.3106 -0.31145 2016 10 8 57669 0.2134 0.3089 -0.31278 2016 10 9 57670 0.2124 0.3073 -0.31411 2016 10 10 57671 0.2115 0.3056 -0.31547 2016 10 11 57672 0.2104 0.3040 -0.31699 2016 10 12 57673 0.2094 0.3024 -0.31866 2016 10 13 57674 0.2083 0.3008 -0.32050 2016 10 14 57675 0.2072 0.2992 -0.32257 2016 10 15 57676 0.2061 0.2976 -0.32469 2016 10 16 57677 0.2049 0.2961 -0.32694 2016 10 17 57678 0.2038 0.2946 -0.32916 2016 10 18 57679 0.2026 0.2930 -0.33128 2016 10 19 57680 0.2013 0.2915 -0.33319 2016 10 20 57681 0.2001 0.2901 -0.33501 2016 10 21 57682 0.1988 0.2886 -0.33676 2016 10 22 57683 0.1974 0.2872 -0.33849 2016 10 23 57684 0.1961 0.2858 -0.34022 2016 10 24 57685 0.1947 0.2844 -0.34201 2016 10 25 57686 0.1933 0.2830 -0.34390 2016 10 26 57687 0.1919 0.2816 -0.34594 2016 10 27 57688 0.1905 0.2803 -0.34809 2016 10 28 57689 0.1890 0.2790 -0.35031 2016 10 29 57690 0.1875 0.2777 -0.35248 2016 10 30 57691 0.1860 0.2764 -0.35454 2016 10 31 57692 0.1845 0.2752 -0.35658 2016 11 1 57693 0.1829 0.2740 -0.35844 2016 11 2 57694 0.1814 0.2728 -0.36026 2016 11 3 57695 0.1798 0.2716 -0.36194 2016 11 4 57696 0.1782 0.2705 -0.36352 2016 11 5 57697 0.1765 0.2693 -0.36505 2016 11 6 57698 0.1749 0.2682 -0.36662 2016 11 7 57699 0.1732 0.2672 -0.36826 2016 11 8 57700 0.1715 0.2661 -0.37005 2016 11 9 57701 0.1698 0.2651 -0.37203 2016 11 10 57702 0.1680 0.2641 -0.37421 2016 11 11 57703 0.1663 0.2631 -0.37651 2016 11 12 57704 0.1645 0.2622 -0.37885 2016 11 13 57705 0.1628 0.2613 -0.38117 2016 11 14 57706 0.1610 0.2604 -0.38337 2016 11 15 57707 0.1591 0.2595 -0.38532 2016 11 16 57708 0.1573 0.2587 -0.38711 2016 11 17 57709 0.1555 0.2579 -0.38872 2016 11 18 57710 0.1536 0.2571 -0.39014 2016 11 19 57711 0.1518 0.2563 -0.39146 2016 11 20 57712 0.1499 0.2556 -0.39268 2016 11 21 57713 0.1480 0.2549 -0.39391 2016 11 22 57714 0.1461 0.2543 -0.39525 2016 11 23 57715 0.1442 0.2536 -0.39651 2016 11 24 57716 0.1422 0.2530 -0.39782 2016 11 25 57717 0.1403 0.2524 -0.39915 2016 11 26 57718 0.1384 0.2519 -0.40043 2016 11 27 57719 0.1364 0.2513 -0.40165 2016 11 28 57720 0.1344 0.2509 -0.40282 2016 11 29 57721 0.1325 0.2504 -0.40402 2016 11 30 57722 0.1305 0.2500 -0.40516 2016 12 1 57723 0.1285 0.2496 -0.40620 2016 12 2 57724 0.1265 0.2492 -0.40719 2016 12 3 57725 0.1245 0.2488 -0.40817 2016 12 4 57726 0.1225 0.2485 -0.40922 2016 12 5 57727 0.1205 0.2482 -0.41031 2016 12 6 57728 0.1185 0.2480 -0.41153 2016 12 7 57729 0.1165 0.2478 -0.41290 2016 12 8 57730 0.1145 0.2476 -0.41444 2016 12 9 57731 0.1125 0.2474 -0.41609 2016 12 10 57732 0.1105 0.2473 -0.41786 2016 12 11 57733 0.1084 0.2472 -0.41957 2016 12 12 57734 0.1064 0.2471 -0.42125 2016 12 13 57735 0.1044 0.2471 -0.42278 2016 12 14 57736 0.1024 0.2471 -0.42422 2016 12 15 57737 0.1004 0.2471 -0.42560 2016 12 16 57738 0.0984 0.2471 -0.42703 2016 12 17 57739 0.0963 0.2472 -0.42848 2016 12 18 57740 0.0943 0.2473 -0.43003 2016 12 19 57741 0.0923 0.2475 -0.43162 2016 12 20 57742 0.0903 0.2476 -0.43321 2016 12 21 57743 0.0883 0.2478 -0.43477 2016 12 22 57744 0.0863 0.2481 -0.43631 2016 12 23 57745 0.0844 0.2483 -0.43776 2016 12 24 57746 0.0824 0.2486 -0.43910 2016 12 25 57747 0.0804 0.2489 -0.44037 2016 12 26 57748 0.0784 0.2493 -0.44153 2016 12 27 57749 0.0765 0.2497 -0.44256 2016 12 28 57750 0.0745 0.2501 -0.44345 2016 12 29 57751 0.0726 0.2505 -0.44427 2016 12 30 57752 0.0707 0.2510 -0.44502 2016 12 31 57753 0.0687 0.2515 -0.44580 2017 1 1 57754 0.0668 0.2520 -0.44658 2017 1 2 57755 0.0649 0.2526 -0.44744 2017 1 3 57756 0.0630 0.2532 -0.44845 2017 1 4 57757 0.0612 0.2538 -0.44960 2017 1 5 57758 0.0593 0.2544 -0.45087 2017 1 6 57759 0.0575 0.2551 -0.45227 2017 1 7 57760 0.0556 0.2558 -0.45370 2017 1 8 57761 0.0538 0.2565 -0.45505 2017 1 9 57762 0.0520 0.2573 -0.45633 2017 1 10 57763 0.0502 0.2580 -0.45747 2017 1 11 57764 0.0484 0.2588 -0.45849 2017 1 12 57765 0.0467 0.2597 -0.45944 2017 1 13 57766 0.0449 0.2605 -0.46029 2017 1 14 57767 0.0432 0.2614 -0.46113 2017 1 15 57768 0.0415 0.2623 -0.46200 2017 1 16 57769 0.0398 0.2633 -0.46288 2017 1 17 57770 0.0382 0.2642 -0.46382 2017 1 18 57771 0.0365 0.2652 -0.46476 2017 1 19 57772 0.0349 0.2662 -0.46576 2017 1 20 57773 0.0333 0.2673 -0.46668 2017 1 21 57774 0.0317 0.2683 -0.46763 2017 1 22 57775 0.0301 0.2694 -0.46855 2017 1 23 57776 0.0286 0.2705 -0.46941 2017 1 24 57777 0.0270 0.2716 -0.47026 2017 1 25 57778 0.0255 0.2728 -0.47112 2017 1 26 57779 0.0241 0.2740 -0.47196 2017 1 27 57780 0.0226 0.2752 -0.47275 2017 1 28 57781 0.0212 0.2764 -0.47356 2017 1 29 57782 0.0198 0.2776 -0.47445 2017 1 30 57783 0.0184 0.2789 -0.47539 2017 1 31 57784 0.0170 0.2802 -0.47643 2017 2 1 57785 0.0157 0.2815 -0.47753 2017 2 2 57786 0.0144 0.2828 -0.47864 2017 2 3 57787 0.0131 0.2842 -0.47979 2017 2 4 57788 0.0118 0.2855 -0.48098 2017 2 5 57789 0.0106 0.2869 -0.48214 2017 2 6 57790 0.0094 0.2883 -0.48330 2017 2 7 57791 0.0082 0.2897 -0.48441 2017 2 8 57792 0.0071 0.2912 -0.48552 2017 2 9 57793 0.0059 0.2926 -0.48670 2017 2 10 57794 0.0048 0.2941 -0.48797 2017 2 11 57795 0.0038 0.2956 -0.48934 2017 2 12 57796 0.0027 0.2971 -0.49090 2017 2 13 57797 0.0017 0.2986 -0.49250 2017 2 14 57798 0.0007 0.3001 -0.49409 2017 2 15 57799 -0.0002 0.3017 -0.49561 2017 2 16 57800 -0.0011 0.3032 -0.49710 2017 2 17 57801 -0.0020 0.3048 -0.49851 2017 2 18 57802 -0.0029 0.3064 -0.49976 2017 2 19 57803 -0.0037 0.3080 -0.50097 2017 2 20 57804 -0.0045 0.3096 -0.50209 2017 2 21 57805 -0.0053 0.3112 -0.50317 2017 2 22 57806 -0.0060 0.3129 -0.50428 2017 2 23 57807 -0.0067 0.3145 -0.50546 2017 2 24 57808 -0.0074 0.3162 -0.50665 These predictions are based on all announced leap seconds. 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).