********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 24 March 2016 Vol. XXIX No. 012 ______________________________________________________________________ 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 18 57465 -.01837 .00009 0.39195 .00009 -0.055306 0.000016 16 3 19 57466 -.01619 .00009 0.39442 .00009 -0.057153 0.000020 16 3 20 57467 -.01461 .00009 0.39693 .00009 -0.059086 0.000018 16 3 21 57468 -.01376 .00009 0.39949 .00009 -0.061174 0.000015 16 3 22 57469 -.01352 .00009 0.40201 .00010 -0.063219 0.000014 16 3 23 57470 -.01357 .00009 0.40432 .00009 -0.065363 0.000015 16 3 24 57471 -.01359 .00009 0.40640 .00009 -0.067421 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 = 0.1103 - 0.1219 cos A + 0.0061 sin A - 0.0051 cos C + 0.0296 sin C y = 0.3698 + 0.0051 cos A + 0.1077 sin A + 0.0296 cos C + 0.0051 sin C UT1-UTC = -0.0731 - 0.00141 (MJD - 57479) - (UT2-UT1) where A = 2*pi*(MJD-57471)/365.25 and C = 2*pi*(MJD-57471)/435. TAI-UTC(MJD 57472) = 36.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57471)**0.80 S t = 0.00025 (MJD-57471)**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 3 25 57472 -0.0133 0.4083 -0.06945 2016 3 26 57473 -0.0128 0.4102 -0.07145 2016 3 27 57474 -0.0120 0.4120 -0.07341 2016 3 28 57475 -0.0111 0.4139 -0.07529 2016 3 29 57476 -0.0101 0.4157 -0.07707 2016 3 30 57477 -0.0092 0.4175 -0.07878 2016 3 31 57478 -0.0084 0.4192 -0.08042 2016 4 1 57479 -0.0075 0.4208 -0.08208 2016 4 2 57480 -0.0066 0.4224 -0.08383 2016 4 3 57481 -0.0056 0.4240 -0.08578 2016 4 4 57482 -0.0046 0.4254 -0.08795 2016 4 5 57483 -0.0035 0.4269 -0.09033 2016 4 6 57484 -0.0023 0.4284 -0.09287 2016 4 7 57485 -0.0011 0.4299 -0.09551 2016 4 8 57486 0.0002 0.4314 -0.09814 2016 4 9 57487 0.0016 0.4329 -0.10065 2016 4 10 57488 0.0029 0.4344 -0.10298 2016 4 11 57489 0.0043 0.4359 -0.10513 2016 4 12 57490 0.0056 0.4374 -0.10712 2016 4 13 57491 0.0070 0.4389 -0.10900 2016 4 14 57492 0.0084 0.4403 -0.11084 2016 4 15 57493 0.0098 0.4417 -0.11269 2016 4 16 57494 0.0113 0.4431 -0.11458 2016 4 17 57495 0.0128 0.4444 -0.11650 2016 4 18 57496 0.0143 0.4458 -0.11846 2016 4 19 57497 0.0158 0.4471 -0.12043 2016 4 20 57498 0.0174 0.4485 -0.12239 2016 4 21 57499 0.0189 0.4497 -0.12432 2016 4 22 57500 0.0205 0.4510 -0.12617 2016 4 23 57501 0.0221 0.4522 -0.12793 2016 4 24 57502 0.0237 0.4535 -0.12958 2016 4 25 57503 0.0254 0.4546 -0.13115 2016 4 26 57504 0.0270 0.4558 -0.13264 2016 4 27 57505 0.0287 0.4569 -0.13409 2016 4 28 57506 0.0305 0.4580 -0.13555 2016 4 29 57507 0.0322 0.4591 -0.13705 2016 4 30 57508 0.0340 0.4601 -0.13864 2016 5 1 57509 0.0357 0.4612 -0.14037 2016 5 2 57510 0.0375 0.4622 -0.14225 2016 5 3 57511 0.0393 0.4631 -0.14430 2016 5 4 57512 0.0412 0.4641 -0.14646 2016 5 5 57513 0.0430 0.4650 -0.14868 2016 5 6 57514 0.0449 0.4659 -0.15084 2016 5 7 57515 0.0468 0.4667 -0.15288 2016 5 8 57516 0.0487 0.4676 -0.15475 2016 5 9 57517 0.0506 0.4684 -0.15646 2016 5 10 57518 0.0525 0.4691 -0.15805 2016 5 11 57519 0.0545 0.4699 -0.15958 2016 5 12 57520 0.0564 0.4706 -0.16110 2016 5 13 57521 0.0584 0.4713 -0.16265 2016 5 14 57522 0.0604 0.4719 -0.16425 2016 5 15 57523 0.0624 0.4726 -0.16588 2016 5 16 57524 0.0644 0.4732 -0.16755 2016 5 17 57525 0.0664 0.4737 -0.16922 2016 5 18 57526 0.0684 0.4743 -0.17086 2016 5 19 57527 0.0705 0.4748 -0.17244 2016 5 20 57528 0.0725 0.4753 -0.17395 2016 5 21 57529 0.0746 0.4757 -0.17536 2016 5 22 57530 0.0767 0.4761 -0.17667 2016 5 23 57531 0.0787 0.4765 -0.17790 2016 5 24 57532 0.0808 0.4769 -0.17907 2016 5 25 57533 0.0829 0.4772 -0.18020 2016 5 26 57534 0.0850 0.4775 -0.18135 2016 5 27 57535 0.0871 0.4777 -0.18256 2016 5 28 57536 0.0892 0.4779 -0.18389 2016 5 29 57537 0.0913 0.4781 -0.18535 2016 5 30 57538 0.0934 0.4783 -0.18695 2016 5 31 57539 0.0955 0.4784 -0.18866 2016 6 1 57540 0.0976 0.4785 -0.19043 2016 6 2 57541 0.0997 0.4786 -0.19218 2016 6 3 57542 0.1019 0.4786 -0.19382 2016 6 4 57543 0.1040 0.4786 -0.19531 2016 6 5 57544 0.1061 0.4786 -0.19661 2016 6 6 57545 0.1082 0.4785 -0.19775 2016 6 7 57546 0.1103 0.4784 -0.19880 2016 6 8 57547 0.1125 0.4783 -0.19979 2016 6 9 57548 0.1146 0.4781 -0.20078 2016 6 10 57549 0.1167 0.4780 -0.20179 2016 6 11 57550 0.1188 0.4777 -0.20282 2016 6 12 57551 0.1209 0.4775 -0.20385 2016 6 13 57552 0.1230 0.4772 -0.20487 2016 6 14 57553 0.1251 0.4769 -0.20586 2016 6 15 57554 0.1272 0.4765 -0.20678 2016 6 16 57555 0.1293 0.4761 -0.20763 2016 6 17 57556 0.1313 0.4757 -0.20839 2016 6 18 57557 0.1334 0.4753 -0.20905 2016 6 19 57558 0.1355 0.4748 -0.20963 2016 6 20 57559 0.1375 0.4743 -0.21015 2016 6 21 57560 0.1396 0.4738 -0.21063 2016 6 22 57561 0.1416 0.4732 -0.21112 2016 6 23 57562 0.1436 0.4726 -0.21168 2016 6 24 57563 0.1456 0.4720 -0.21233 2016 6 25 57564 0.1476 0.4713 -0.21312 2016 6 26 57565 0.1496 0.4706 -0.21403 2016 6 27 57566 0.1516 0.4699 -0.21506 2016 6 28 57567 0.1535 0.4692 -0.21615 2016 6 29 57568 0.1555 0.4684 -0.21724 2016 6 30 57569 0.1574 0.4676 -0.21826 2016 7 1 57570 0.1593 0.4667 -0.21917 2016 7 2 57571 0.1612 0.4659 -0.21993 2016 7 3 57572 0.1631 0.4650 -0.22056 2016 7 4 57573 0.1650 0.4641 -0.22110 2016 7 5 57574 0.1669 0.4631 -0.22160 2016 7 6 57575 0.1687 0.4621 -0.22212 2016 7 7 57576 0.1705 0.4611 -0.22268 2016 7 8 57577 0.1723 0.4601 -0.22328 2016 7 9 57578 0.1741 0.4590 -0.22392 2016 7 10 57579 0.1759 0.4579 -0.22457 2016 7 11 57580 0.1776 0.4568 -0.22525 2016 7 12 57581 0.1793 0.4557 -0.22588 2016 7 13 57582 0.1810 0.4545 -0.22647 2016 7 14 57583 0.1827 0.4533 -0.22697 2016 7 15 57584 0.1844 0.4521 -0.22740 2016 7 16 57585 0.1860 0.4508 -0.22776 2016 7 17 57586 0.1876 0.4496 -0.22806 2016 7 18 57587 0.1892 0.4483 -0.22834 2016 7 19 57588 0.1908 0.4470 -0.22864 2016 7 20 57589 0.1923 0.4456 -0.22900 2016 7 21 57590 0.1938 0.4443 -0.22947 2016 7 22 57591 0.1953 0.4429 -0.23010 2016 7 23 57592 0.1968 0.4415 -0.23087 2016 7 24 57593 0.1982 0.4400 -0.23178 2016 7 25 57594 0.1996 0.4386 -0.23277 2016 7 26 57595 0.2010 0.4371 -0.23378 2016 7 27 57596 0.2024 0.4356 -0.23473 2016 7 28 57597 0.2037 0.4341 -0.23559 2016 7 29 57598 0.2050 0.4325 -0.23633 2016 7 30 57599 0.2063 0.4310 -0.23695 2016 7 31 57600 0.2076 0.4294 -0.23749 2016 8 1 57601 0.2088 0.4278 -0.23800 2016 8 2 57602 0.2100 0.4262 -0.23852 2016 8 3 57603 0.2111 0.4246 -0.23910 2016 8 4 57604 0.2123 0.4229 -0.23976 2016 8 5 57605 0.2134 0.4213 -0.24048 2016 8 6 57606 0.2145 0.4196 -0.24124 2016 8 7 57607 0.2155 0.4179 -0.24201 2016 8 8 57608 0.2165 0.4162 -0.24278 2016 8 9 57609 0.2175 0.4144 -0.24350 2016 8 10 57610 0.2184 0.4127 -0.24417 2016 8 11 57611 0.2193 0.4109 -0.24478 2016 8 12 57612 0.2202 0.4092 -0.24532 2016 8 13 57613 0.2211 0.4074 -0.24581 2016 8 14 57614 0.2219 0.4056 -0.24629 2016 8 15 57615 0.2227 0.4038 -0.24679 2016 8 16 57616 0.2234 0.4019 -0.24735 2016 8 17 57617 0.2242 0.4001 -0.24803 2016 8 18 57618 0.2248 0.3983 -0.24887 2016 8 19 57619 0.2255 0.3964 -0.24990 2016 8 20 57620 0.2261 0.3945 -0.25110 2016 8 21 57621 0.2267 0.3927 -0.25242 2016 8 22 57622 0.2272 0.3908 -0.25379 2016 8 23 57623 0.2278 0.3889 -0.25513 2016 8 24 57624 0.2282 0.3870 -0.25637 2016 8 25 57625 0.2287 0.3851 -0.25749 2016 8 26 57626 0.2291 0.3832 -0.25849 2016 8 27 57627 0.2295 0.3813 -0.25940 2016 8 28 57628 0.2298 0.3793 -0.26026 2016 8 29 57629 0.2301 0.3774 -0.26114 2016 8 30 57630 0.2304 0.3755 -0.26208 2016 8 31 57631 0.2306 0.3735 -0.26310 2016 9 1 57632 0.2308 0.3716 -0.26420 2016 9 2 57633 0.2310 0.3697 -0.26537 2016 9 3 57634 0.2311 0.3677 -0.26658 2016 9 4 57635 0.2312 0.3658 -0.26779 2016 9 5 57636 0.2313 0.3638 -0.26898 2016 9 6 57637 0.2313 0.3619 -0.27013 2016 9 7 57638 0.2313 0.3599 -0.27122 2016 9 8 57639 0.2313 0.3580 -0.27225 2016 9 9 57640 0.2312 0.3560 -0.27322 2016 9 10 57641 0.2311 0.3541 -0.27418 2016 9 11 57642 0.2309 0.3521 -0.27514 2016 9 12 57643 0.2307 0.3502 -0.27616 2016 9 13 57644 0.2305 0.3482 -0.27728 2016 9 14 57645 0.2302 0.3463 -0.27855 2016 9 15 57646 0.2299 0.3444 -0.28001 2016 9 16 57647 0.2296 0.3424 -0.28167 2016 9 17 57648 0.2292 0.3405 -0.28350 2016 9 18 57649 0.2288 0.3386 -0.28542 2016 9 19 57650 0.2284 0.3367 -0.28734 2016 9 20 57651 0.2279 0.3348 -0.28918 2016 9 21 57652 0.2274 0.3329 -0.29086 2016 9 22 57653 0.2269 0.3310 -0.29239 2016 9 23 57654 0.2263 0.3291 -0.29377 2016 9 24 57655 0.2257 0.3272 -0.29507 2016 9 25 57656 0.2251 0.3254 -0.29632 2016 9 26 57657 0.2244 0.3235 -0.29757 2016 9 27 57658 0.2237 0.3217 -0.29885 2016 9 28 57659 0.2229 0.3199 -0.30017 2016 9 29 57660 0.2222 0.3180 -0.30152 2016 9 30 57661 0.2214 0.3162 -0.30288 2016 10 1 57662 0.2205 0.3144 -0.30424 2016 10 2 57663 0.2196 0.3126 -0.30557 2016 10 3 57664 0.2187 0.3109 -0.30687 2016 10 4 57665 0.2178 0.3091 -0.30813 2016 10 5 57666 0.2168 0.3074 -0.30934 2016 10 6 57667 0.2158 0.3057 -0.31052 2016 10 7 57668 0.2148 0.3039 -0.31167 2016 10 8 57669 0.2137 0.3023 -0.31282 2016 10 9 57670 0.2126 0.3006 -0.31402 2016 10 10 57671 0.2115 0.2989 -0.31530 2016 10 11 57672 0.2104 0.2973 -0.31672 2016 10 12 57673 0.2092 0.2956 -0.31833 2016 10 13 57674 0.2080 0.2940 -0.32015 2016 10 14 57675 0.2067 0.2924 -0.32219 2016 10 15 57676 0.2054 0.2909 -0.32440 2016 10 16 57677 0.2041 0.2893 -0.32669 2016 10 17 57678 0.2028 0.2878 -0.32895 2016 10 18 57679 0.2015 0.2863 -0.33109 2016 10 19 57680 0.2001 0.2848 -0.33308 2016 10 20 57681 0.1987 0.2833 -0.33492 2016 10 21 57682 0.1972 0.2819 -0.33665 2016 10 22 57683 0.1958 0.2804 -0.33834 2016 10 23 57684 0.1943 0.2790 -0.34005 2016 10 24 57685 0.1928 0.2777 -0.34181 2016 10 25 57686 0.1912 0.2763 -0.34367 2016 10 26 57687 0.1897 0.2750 -0.34562 2016 10 27 57688 0.1881 0.2737 -0.34764 2016 10 28 57689 0.1865 0.2724 -0.34969 2016 10 29 57690 0.1849 0.2711 -0.35173 2016 10 30 57691 0.1832 0.2699 -0.35375 2016 10 31 57692 0.1815 0.2687 -0.35568 2016 11 1 57693 0.1798 0.2675 -0.35750 2016 11 2 57694 0.1781 0.2663 -0.35919 2016 11 3 57695 0.1764 0.2652 -0.36074 2016 11 4 57696 0.1746 0.2641 -0.36222 2016 11 5 57697 0.1728 0.2630 -0.36371 2016 11 6 57698 0.1710 0.2619 -0.36525 2016 11 7 57699 0.1692 0.2609 -0.36691 2016 11 8 57700 0.1674 0.2599 -0.36867 2016 11 9 57701 0.1655 0.2589 -0.37055 2016 11 10 57702 0.1637 0.2580 -0.37261 2016 11 11 57703 0.1618 0.2571 -0.37485 2016 11 12 57704 0.1599 0.2562 -0.37717 2016 11 13 57705 0.1579 0.2554 -0.37947 2016 11 14 57706 0.1560 0.2545 -0.38166 2016 11 15 57707 0.1541 0.2537 -0.38377 2016 11 16 57708 0.1521 0.2530 -0.38576 2016 11 17 57709 0.1501 0.2522 -0.38764 2016 11 18 57710 0.1481 0.2515 -0.38945 2016 11 19 57711 0.1461 0.2508 -0.39127 2016 11 20 57712 0.1441 0.2502 -0.39305 2016 11 21 57713 0.1421 0.2496 -0.39489 2016 11 22 57714 0.1401 0.2490 -0.39675 2016 11 23 57715 0.1380 0.2484 -0.39864 2016 11 24 57716 0.1360 0.2479 -0.40055 2016 11 25 57717 0.1339 0.2474 -0.40243 2016 11 26 57718 0.1318 0.2470 -0.40423 2016 11 27 57719 0.1298 0.2465 -0.40601 2016 11 28 57720 0.1277 0.2461 -0.40763 2016 11 29 57721 0.1256 0.2458 -0.40915 2016 11 30 57722 0.1235 0.2455 -0.41058 2016 12 1 57723 0.1214 0.2452 -0.41192 2016 12 2 57724 0.1193 0.2449 -0.41322 2016 12 3 57725 0.1172 0.2446 -0.41449 2016 12 4 57726 0.1151 0.2444 -0.41580 2016 12 5 57727 0.1129 0.2443 -0.41716 2016 12 6 57728 0.1108 0.2441 -0.41870 2016 12 7 57729 0.1087 0.2440 -0.42037 2016 12 8 57730 0.1066 0.2439 -0.42215 2016 12 9 57731 0.1045 0.2439 -0.42409 2016 12 10 57732 0.1023 0.2439 -0.42599 2016 12 11 57733 0.1002 0.2439 -0.42795 2016 12 12 57734 0.0981 0.2440 -0.42981 2016 12 13 57735 0.0960 0.2441 -0.43155 2016 12 14 57736 0.0939 0.2442 -0.43311 2016 12 15 57737 0.0917 0.2443 -0.43463 2016 12 16 57738 0.0896 0.2445 -0.43615 2016 12 17 57739 0.0875 0.2447 -0.43772 2016 12 18 57740 0.0854 0.2450 -0.43931 2016 12 19 57741 0.0833 0.2453 -0.44099 2016 12 20 57742 0.0812 0.2456 -0.44273 2016 12 21 57743 0.0791 0.2459 -0.44457 2016 12 22 57744 0.0771 0.2463 -0.44647 2016 12 23 57745 0.0750 0.2467 -0.44836 2016 12 24 57746 0.0729 0.2471 -0.45016 2016 12 25 57747 0.0709 0.2476 -0.45180 2016 12 26 57748 0.0688 0.2481 -0.45341 2016 12 27 57749 0.0668 0.2486 -0.45484 2016 12 28 57750 0.0648 0.2492 -0.45624 2016 12 29 57751 0.0628 0.2498 -0.45754 2016 12 30 57752 0.0608 0.2504 -0.45878 2016 12 31 57753 0.0588 0.2511 -0.46002 2017 1 1 57754 0.0568 0.2517 -0.46135 2017 1 2 57755 0.0548 0.2525 -0.46281 2017 1 3 57756 0.0529 0.2532 -0.46443 2017 1 4 57757 0.0510 0.2540 -0.46621 2017 1 5 57758 0.0490 0.2548 -0.46813 2017 1 6 57759 0.0471 0.2556 -0.47007 2017 1 7 57760 0.0453 0.2565 -0.47195 2017 1 8 57761 0.0434 0.2574 -0.47372 2017 1 9 57762 0.0415 0.2583 -0.47534 2017 1 10 57763 0.0397 0.2592 -0.47674 2017 1 11 57764 0.0379 0.2602 -0.47805 2017 1 12 57765 0.0361 0.2612 -0.47927 2017 1 13 57766 0.0343 0.2622 -0.48041 2017 1 14 57767 0.0325 0.2633 -0.48153 2017 1 15 57768 0.0308 0.2644 -0.48261 2017 1 16 57769 0.0291 0.2655 -0.48370 2017 1 17 57770 0.0274 0.2666 -0.48492 2017 1 18 57771 0.0257 0.2678 -0.48600 2017 1 19 57772 0.0241 0.2690 -0.48711 2017 1 20 57773 0.0224 0.2702 -0.48819 2017 1 21 57774 0.0208 0.2714 -0.48920 2017 1 22 57775 0.0192 0.2727 -0.49014 2017 1 23 57776 0.0177 0.2740 -0.49102 2017 1 24 57777 0.0161 0.2753 -0.49196 2017 1 25 57778 0.0146 0.2766 -0.49290 2017 1 26 57779 0.0131 0.2780 -0.49379 2017 1 27 57780 0.0117 0.2793 -0.49472 2017 1 28 57781 0.0102 0.2807 -0.49571 2017 1 29 57782 0.0088 0.2822 -0.49684 2017 1 30 57783 0.0074 0.2836 -0.49808 2017 1 31 57784 0.0061 0.2851 -0.49947 2017 2 1 57785 0.0047 0.2866 -0.50097 2017 2 2 57786 0.0034 0.2881 -0.50257 2017 2 3 57787 0.0022 0.2896 -0.50418 2017 2 4 57788 0.0009 0.2911 -0.50579 2017 2 5 57789 -0.0003 0.2927 -0.50726 2017 2 6 57790 -0.0015 0.2943 -0.50869 2017 2 7 57791 -0.0026 0.2959 -0.51002 2017 2 8 57792 -0.0038 0.2975 -0.51133 2017 2 9 57793 -0.0049 0.2991 -0.51270 2017 2 10 57794 -0.0059 0.3008 -0.51423 2017 2 11 57795 -0.0070 0.3024 -0.51585 2017 2 12 57796 -0.0080 0.3041 -0.51762 2017 2 13 57797 -0.0090 0.3058 -0.51945 2017 2 14 57798 -0.0099 0.3075 -0.52127 2017 2 15 57799 -0.0108 0.3092 -0.52304 2017 2 16 57800 -0.0117 0.3110 -0.52477 2017 2 17 57801 -0.0125 0.3127 -0.52638 2017 2 18 57802 -0.0134 0.3145 -0.52787 2017 2 19 57803 -0.0141 0.3163 -0.52929 2017 2 20 57804 -0.0149 0.3181 -0.53061 2017 2 21 57805 -0.0156 0.3199 -0.53185 2017 2 22 57806 -0.0163 0.3217 -0.53300 2017 2 23 57807 -0.0169 0.3235 -0.53415 2017 2 24 57808 -0.0176 0.3253 -0.53531 2017 2 25 57809 -0.0181 0.3272 -0.53659 2017 2 26 57810 -0.0187 0.3290 -0.53794 2017 2 27 57811 -0.0192 0.3309 -0.53942 2017 2 28 57812 -0.0197 0.3327 -0.54106 2017 3 1 57813 -0.0201 0.3346 -0.54280 2017 3 2 57814 -0.0205 0.3365 -0.54458 2017 3 3 57815 -0.0209 0.3384 -0.54635 2017 3 4 57816 -0.0213 0.3402 -0.54806 2017 3 5 57817 -0.0216 0.3421 -0.54962 2017 3 6 57818 -0.0218 0.3440 -0.55108 2017 3 7 57819 -0.0221 0.3459 -0.55246 2017 3 8 57820 -0.0223 0.3478 -0.55379 2017 3 9 57821 -0.0224 0.3498 -0.55514 2017 3 10 57822 -0.0226 0.3517 -0.55645 2017 3 11 57823 -0.0227 0.3536 -0.55779 2017 3 12 57824 -0.0227 0.3555 -0.55918 2017 3 13 57825 -0.0228 0.3574 -0.56055 2017 3 14 57826 -0.0228 0.3593 -0.56196 2017 3 15 57827 -0.0227 0.3612 -0.56335 2017 3 16 57828 -0.0226 0.3631 -0.56476 2017 3 17 57829 -0.0225 0.3651 -0.56607 2017 3 18 57830 -0.0224 0.3670 -0.56740 2017 3 19 57831 -0.0222 0.3689 -0.56869 2017 3 20 57832 -0.0220 0.3708 -0.56994 2017 3 21 57833 -0.0217 0.3727 -0.57121 2017 3 22 57834 -0.0214 0.3746 -0.57253 2017 3 23 57835 -0.0211 0.3765 -0.57390 2017 3 24 57836 -0.0208 0.3784 -0.57526 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) 57449 -94.40 0.30 -11.70 0.01 57450 -94.08 0.30 -11.48 0.01 57451 -93.59 0.30 -11.21 0.01 57452 -93.29 0.30 -11.13 0.15 57453 -93.35 0.30 -11.37 0.15 57454 -93.50 0.30 -11.71 0.15 57455 -93.33 0.30 -11.83 0.15 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57449 -0.057 0.119 -0.151 0.010 57450 -0.013 0.119 -0.128 0.010 57451 0.015 0.119 -0.103 0.010 57452 0.021 0.119 -0.086 0.150 57453 0.026 0.119 -0.096 0.150 57454 0.041 0.119 -0.090 0.150 57455 0.067 0.119 -0.065 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).