********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 25 April 2013 Vol. XXVI No. 017 ______________________________________________________________________ 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 11 April 2013 at 0000 UTC Beginning 1 July 2012: TAI-UTC = 35.000 000 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 * *********************************************************************** ________________________________________________________________________ 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 13 4 19 56401 0.05863 .00009 0.38870 .00009 0.131288 0.000015 13 4 20 56402 0.05944 .00010 0.38989 .00009 0.129885 0.000014 13 4 21 56403 0.06016 .00009 0.39097 .00009 0.128342 0.000014 13 4 22 56404 0.06107 .00009 0.39195 .00009 0.126707 0.000003 13 4 23 56405 0.06206 .00010 0.39277 .00009 0.124958 0.000003 13 4 24 56406 0.06303 .00009 0.39339 .00009 0.123138 0.000003 13 4 25 56407 0.06398 .00009 0.39391 .00009 0.121325 0.000003 _______________________________________________________________________ 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 = 0.0942 - 0.0959 cos A + 0.1131 sin A + 0.0687 cos C - 0.0454 sin C y = 0.3393 + 0.0971 cos A + 0.0855 sin A - 0.0454 cos C - 0.0687 sin C UT1-UTC = 0.1400 - 0.00096 (MJD - 56415) - (UT2-UT1) where A = 2*pi*(MJD-56407)/365.25 and C = 2*pi*(MJD-56407)/435. TAI-UTC(MJD 56408) = 35.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-56407)**0.80 S t = 0.00025 (MJD-56407)**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) 2013 4 26 56408 0.0650 0.3944 0.11958 2013 4 27 56409 0.0661 0.3949 0.11798 2013 4 28 56410 0.0673 0.3955 0.11656 2013 4 29 56411 0.0684 0.3960 0.11525 2013 4 30 56412 0.0697 0.3965 0.11395 2013 5 1 56413 0.0710 0.3971 0.11262 2013 5 2 56414 0.0723 0.3976 0.11123 2013 5 3 56415 0.0736 0.3981 0.10977 2013 5 4 56416 0.0750 0.3986 0.10825 2013 5 5 56417 0.0764 0.3991 0.10670 2013 5 6 56418 0.0778 0.3996 0.10517 2013 5 7 56419 0.0792 0.4000 0.10371 2013 5 8 56420 0.0806 0.4004 0.10236 2013 5 9 56421 0.0821 0.4008 0.10118 2013 5 10 56422 0.0835 0.4011 0.10015 2013 5 11 56423 0.0850 0.4015 0.09926 2013 5 12 56424 0.0865 0.4018 0.09847 2013 5 13 56425 0.0880 0.4020 0.09774 2013 5 14 56426 0.0895 0.4023 0.09704 2013 5 15 56427 0.0910 0.4025 0.09630 2013 5 16 56428 0.0926 0.4027 0.09550 2013 5 17 56429 0.0941 0.4029 0.09459 2013 5 18 56430 0.0957 0.4031 0.09355 2013 5 19 56431 0.0973 0.4032 0.09239 2013 5 20 56432 0.0988 0.4033 0.09111 2013 5 21 56433 0.1004 0.4034 0.08978 2013 5 22 56434 0.1020 0.4034 0.08844 2013 5 23 56435 0.1036 0.4035 0.08718 2013 5 24 56436 0.1052 0.4035 0.08605 2013 5 25 56437 0.1068 0.4034 0.08506 2013 5 26 56438 0.1084 0.4034 0.08418 2013 5 27 56439 0.1100 0.4033 0.08334 2013 5 28 56440 0.1116 0.4032 0.08247 2013 5 29 56441 0.1132 0.4031 0.08152 2013 5 30 56442 0.1148 0.4030 0.08049 2013 5 31 56443 0.1164 0.4028 0.07939 2013 6 1 56444 0.1180 0.4026 0.07827 2013 6 2 56445 0.1196 0.4023 0.07719 2013 6 3 56446 0.1212 0.4021 0.07621 2013 6 4 56447 0.1228 0.4018 0.07536 2013 6 5 56448 0.1244 0.4015 0.07465 2013 6 6 56449 0.1259 0.4012 0.07410 2013 6 7 56450 0.1275 0.4008 0.07370 2013 6 8 56451 0.1291 0.4004 0.07341 2013 6 9 56452 0.1307 0.4000 0.07321 2013 6 10 56453 0.1322 0.3996 0.07305 2013 6 11 56454 0.1338 0.3991 0.07288 2013 6 12 56455 0.1354 0.3987 0.07268 2013 6 13 56456 0.1369 0.3982 0.07240 2013 6 14 56457 0.1384 0.3976 0.07201 2013 6 15 56458 0.1400 0.3971 0.07153 2013 6 16 56459 0.1415 0.3965 0.07095 2013 6 17 56460 0.1430 0.3959 0.07031 2013 6 18 56461 0.1445 0.3952 0.06964 2013 6 19 56462 0.1460 0.3946 0.06900 2013 6 20 56463 0.1475 0.3939 0.06843 2013 6 21 56464 0.1489 0.3932 0.06796 2013 6 22 56465 0.1504 0.3925 0.06757 2013 6 23 56466 0.1518 0.3917 0.06722 2013 6 24 56467 0.1532 0.3909 0.06684 2013 6 25 56468 0.1547 0.3901 0.06637 2013 6 26 56469 0.1560 0.3893 0.06579 2013 6 27 56470 0.1574 0.3885 0.06511 2013 6 28 56471 0.1588 0.3876 0.06438 2013 6 29 56472 0.1602 0.3867 0.06369 2013 6 30 56473 0.1615 0.3858 0.06310 2013 7 1 56474 0.1628 0.3849 0.06263 2013 7 2 56475 0.1641 0.3839 0.06233 2013 7 3 56476 0.1654 0.3829 0.06218 2013 7 4 56477 0.1667 0.3819 0.06217 2013 7 5 56478 0.1679 0.3809 0.06228 2013 7 6 56479 0.1691 0.3799 0.06246 2013 7 7 56480 0.1703 0.3788 0.06268 2013 7 8 56481 0.1715 0.3777 0.06289 2013 7 9 56482 0.1727 0.3766 0.06305 2013 7 10 56483 0.1738 0.3755 0.06312 2013 7 11 56484 0.1750 0.3744 0.06310 2013 7 12 56485 0.1761 0.3732 0.06296 2013 7 13 56486 0.1772 0.3720 0.06272 2013 7 14 56487 0.1782 0.3708 0.06242 2013 7 15 56488 0.1793 0.3696 0.06208 2013 7 16 56489 0.1803 0.3684 0.06175 2013 7 17 56490 0.1813 0.3671 0.06149 2013 7 18 56491 0.1822 0.3659 0.06130 2013 7 19 56492 0.1832 0.3646 0.06119 2013 7 20 56493 0.1841 0.3633 0.06113 2013 7 21 56494 0.1850 0.3620 0.06105 2013 7 22 56495 0.1859 0.3606 0.06088 2013 7 23 56496 0.1867 0.3593 0.06058 2013 7 24 56497 0.1875 0.3579 0.06012 2013 7 25 56498 0.1883 0.3566 0.05955 2013 7 26 56499 0.1891 0.3552 0.05895 2013 7 27 56500 0.1898 0.3538 0.05839 2013 7 28 56501 0.1905 0.3524 0.05795 2013 7 29 56502 0.1912 0.3510 0.05766 2013 7 30 56503 0.1919 0.3495 0.05753 2013 7 31 56504 0.1925 0.3481 0.05753 2013 8 1 56505 0.1931 0.3466 0.05765 2013 8 2 56506 0.1937 0.3451 0.05785 2013 8 3 56507 0.1942 0.3437 0.05808 2013 8 4 56508 0.1947 0.3422 0.05830 2013 8 5 56509 0.1952 0.3407 0.05845 2013 8 6 56510 0.1956 0.3392 0.05852 2013 8 7 56511 0.1961 0.3377 0.05847 2013 8 8 56512 0.1965 0.3361 0.05830 2013 8 9 56513 0.1968 0.3346 0.05802 2013 8 10 56514 0.1972 0.3331 0.05765 2013 8 11 56515 0.1975 0.3315 0.05723 2013 8 12 56516 0.1978 0.3300 0.05677 2013 8 13 56517 0.1980 0.3284 0.05635 2013 8 14 56518 0.1982 0.3269 0.05600 2013 8 15 56519 0.1984 0.3253 0.05572 2013 8 16 56520 0.1985 0.3237 0.05550 2013 8 17 56521 0.1987 0.3221 0.05528 2013 8 18 56522 0.1988 0.3206 0.05498 2013 8 19 56523 0.1988 0.3190 0.05455 2013 8 20 56524 0.1988 0.3174 0.05396 2013 8 21 56525 0.1988 0.3158 0.05321 2013 8 22 56526 0.1988 0.3142 0.05237 2013 8 23 56527 0.1987 0.3126 0.05151 2013 8 24 56528 0.1986 0.3111 0.05071 2013 8 25 56529 0.1985 0.3095 0.05003 2013 8 26 56530 0.1983 0.3079 0.04950 2013 8 27 56531 0.1981 0.3063 0.04911 2013 8 28 56532 0.1979 0.3047 0.04884 2013 8 29 56533 0.1976 0.3031 0.04865 2013 8 30 56534 0.1974 0.3016 0.04850 2013 8 31 56535 0.1970 0.3000 0.04834 2013 9 1 56536 0.1967 0.2984 0.04812 2013 9 2 56537 0.1963 0.2968 0.04781 2013 9 3 56538 0.1959 0.2953 0.04737 2013 9 4 56539 0.1954 0.2937 0.04679 2013 9 5 56540 0.1949 0.2922 0.04607 2013 9 6 56541 0.1944 0.2906 0.04524 2013 9 7 56542 0.1939 0.2891 0.04434 2013 9 8 56543 0.1933 0.2876 0.04341 2013 9 9 56544 0.1927 0.2860 0.04252 2013 9 10 56545 0.1921 0.2845 0.04169 2013 9 11 56546 0.1914 0.2830 0.04095 2013 9 12 56547 0.1907 0.2815 0.04028 2013 9 13 56548 0.1900 0.2800 0.03962 2013 9 14 56549 0.1892 0.2786 0.03892 2013 9 15 56550 0.1884 0.2771 0.03811 2013 9 16 56551 0.1876 0.2756 0.03715 2013 9 17 56552 0.1868 0.2742 0.03602 2013 9 18 56553 0.1859 0.2728 0.03477 2013 9 19 56554 0.1850 0.2713 0.03345 2013 9 20 56555 0.1840 0.2699 0.03214 2013 9 21 56556 0.1831 0.2685 0.03091 2013 9 22 56557 0.1821 0.2672 0.02981 2013 9 23 56558 0.1811 0.2658 0.02886 2013 9 24 56559 0.1800 0.2645 0.02804 2013 9 25 56560 0.1789 0.2631 0.02732 2013 9 26 56561 0.1778 0.2618 0.02666 2013 9 27 56562 0.1767 0.2605 0.02602 2013 9 28 56563 0.1755 0.2592 0.02533 2013 9 29 56564 0.1743 0.2580 0.02458 2013 9 30 56565 0.1731 0.2567 0.02371 2013 10 1 56566 0.1719 0.2555 0.02270 2013 10 2 56567 0.1706 0.2543 0.02157 2013 10 3 56568 0.1693 0.2531 0.02031 2013 10 4 56569 0.1680 0.2519 0.01895 2013 10 5 56570 0.1667 0.2507 0.01756 2013 10 6 56571 0.1653 0.2496 0.01618 2013 10 7 56572 0.1639 0.2485 0.01486 2013 10 8 56573 0.1625 0.2474 0.01365 2013 10 9 56574 0.1611 0.2463 0.01252 2013 10 10 56575 0.1596 0.2453 0.01145 2013 10 11 56576 0.1581 0.2442 0.01036 2013 10 12 56577 0.1566 0.2432 0.00921 2013 10 13 56578 0.1551 0.2422 0.00794 2013 10 14 56579 0.1535 0.2413 0.00653 2013 10 15 56580 0.1520 0.2404 0.00500 2013 10 16 56581 0.1504 0.2394 0.00339 2013 10 17 56582 0.1488 0.2385 0.00177 2013 10 18 56583 0.1471 0.2377 0.00020 2013 10 19 56584 0.1455 0.2368 -0.00126 2013 10 20 56585 0.1438 0.2360 -0.00259 2013 10 21 56586 0.1421 0.2352 -0.00377 2013 10 22 56587 0.1404 0.2345 -0.00485 2013 10 23 56588 0.1387 0.2337 -0.00584 2013 10 24 56589 0.1370 0.2330 -0.00681 2013 10 25 56590 0.1352 0.2323 -0.00778 2013 10 26 56591 0.1335 0.2317 -0.00882 2013 10 27 56592 0.1317 0.2311 -0.00994 2013 10 28 56593 0.1299 0.2305 -0.01119 2013 10 29 56594 0.1281 0.2299 -0.01256 2013 10 30 56595 0.1262 0.2293 -0.01405 2013 10 31 56596 0.1244 0.2288 -0.01563 2013 11 1 56597 0.1225 0.2283 -0.01728 2013 11 2 56598 0.1207 0.2279 -0.01893 2013 11 3 56599 0.1188 0.2274 -0.02053 2013 11 4 56600 0.1169 0.2270 -0.02204 2013 11 5 56601 0.1150 0.2266 -0.02344 2013 11 6 56602 0.1131 0.2263 -0.02475 2013 11 7 56603 0.1112 0.2260 -0.02601 2013 11 8 56604 0.1093 0.2257 -0.02727 2013 11 9 56605 0.1073 0.2254 -0.02856 2013 11 10 56606 0.1054 0.2252 -0.02991 2013 11 11 56607 0.1035 0.2250 -0.03130 2013 11 12 56608 0.1015 0.2248 -0.03270 2013 11 13 56609 0.0996 0.2247 -0.03406 2013 11 14 56610 0.0976 0.2246 -0.03534 2013 11 15 56611 0.0956 0.2245 -0.03650 2013 11 16 56612 0.0936 0.2245 -0.03751 2013 11 17 56613 0.0917 0.2245 -0.03838 2013 11 18 56614 0.0897 0.2245 -0.03912 2013 11 19 56615 0.0877 0.2245 -0.03977 2013 11 20 56616 0.0857 0.2246 -0.04039 2013 11 21 56617 0.0837 0.2247 -0.04102 2013 11 22 56618 0.0818 0.2249 -0.04170 2013 11 23 56619 0.0798 0.2250 -0.04244 2013 11 24 56620 0.0778 0.2252 -0.04328 2013 11 25 56621 0.0758 0.2255 -0.04423 2013 11 26 56622 0.0738 0.2257 -0.04528 2013 11 27 56623 0.0719 0.2260 -0.04640 2013 11 28 56624 0.0699 0.2264 -0.04759 2013 11 29 56625 0.0679 0.2267 -0.04880 2013 11 30 56626 0.0659 0.2271 -0.05001 2013 12 1 56627 0.0640 0.2275 -0.05117 2013 12 2 56628 0.0620 0.2280 -0.05227 2013 12 3 56629 0.0601 0.2285 -0.05334 2013 12 4 56630 0.0581 0.2290 -0.05443 2013 12 5 56631 0.0562 0.2295 -0.05561 2013 12 6 56632 0.0543 0.2301 -0.05688 2013 12 7 56633 0.0524 0.2307 -0.05828 2013 12 8 56634 0.0504 0.2313 -0.05974 2013 12 9 56635 0.0486 0.2320 -0.06117 2013 12 10 56636 0.0467 0.2327 -0.06255 2013 12 11 56637 0.0448 0.2334 -0.06384 2013 12 12 56638 0.0429 0.2342 -0.06501 2013 12 13 56639 0.0411 0.2350 -0.06603 2013 12 14 56640 0.0392 0.2358 -0.06700 2013 12 15 56641 0.0374 0.2366 -0.06790 2013 12 16 56642 0.0356 0.2375 -0.06870 2013 12 17 56643 0.0338 0.2384 -0.06947 2013 12 18 56644 0.0320 0.2394 -0.07023 2013 12 19 56645 0.0302 0.2403 -0.07104 2013 12 20 56646 0.0285 0.2413 -0.07187 2013 12 21 56647 0.0267 0.2423 -0.07271 2013 12 22 56648 0.0250 0.2434 -0.07362 2013 12 23 56649 0.0233 0.2444 -0.07463 2013 12 24 56650 0.0216 0.2455 -0.07569 2013 12 25 56651 0.0200 0.2467 -0.07679 2013 12 26 56652 0.0183 0.2478 -0.07787 2013 12 27 56653 0.0167 0.2490 -0.07901 2013 12 28 56654 0.0151 0.2502 -0.08009 2013 12 29 56655 0.0135 0.2515 -0.08110 2013 12 30 56656 0.0119 0.2527 -0.08211 2013 12 31 56657 0.0104 0.2540 -0.08312 2014 1 1 56658 0.0089 0.2553 -0.08412 2014 1 2 56659 0.0074 0.2566 -0.08517 2014 1 3 56660 0.0059 0.2580 -0.08640 2014 1 4 56661 0.0045 0.2594 -0.08775 2014 1 5 56662 0.0031 0.2608 -0.08921 2014 1 6 56663 0.0017 0.2622 -0.09070 2014 1 7 56664 0.0003 0.2637 -0.09207 2014 1 8 56665 -0.0010 0.2652 -0.09325 2014 1 9 56666 -0.0024 0.2666 -0.09423 2014 1 10 56667 -0.0037 0.2682 -0.09507 2014 1 11 56668 -0.0049 0.2697 -0.09577 2014 1 12 56669 -0.0062 0.2713 -0.09639 2014 1 13 56670 -0.0074 0.2729 -0.09692 2014 1 14 56671 -0.0085 0.2745 -0.09742 2014 1 15 56672 -0.0097 0.2761 -0.09794 2014 1 16 56673 -0.0108 0.2777 -0.09851 2014 1 17 56674 -0.0119 0.2794 -0.09916 2014 1 18 56675 -0.0130 0.2811 -0.09995 2014 1 19 56676 -0.0140 0.2828 -0.10086 2014 1 20 56677 -0.0150 0.2845 -0.10187 2014 1 21 56678 -0.0160 0.2862 -0.10296 2014 1 22 56679 -0.0169 0.2880 -0.10409 2014 1 23 56680 -0.0178 0.2897 -0.10527 2014 1 24 56681 -0.0187 0.2915 -0.10646 2014 1 25 56682 -0.0195 0.2933 -0.10757 2014 1 26 56683 -0.0203 0.2951 -0.10861 2014 1 27 56684 -0.0211 0.2969 -0.10965 2014 1 28 56685 -0.0218 0.2988 -0.11075 2014 1 29 56686 -0.0225 0.3006 -0.11196 2014 1 30 56687 -0.0232 0.3025 -0.11331 2014 1 31 56688 -0.0238 0.3043 -0.11480 2014 2 1 56689 -0.0244 0.3062 -0.11650 2014 2 2 56690 -0.0250 0.3081 -0.11830 2014 2 3 56691 -0.0255 0.3100 -0.12010 2014 2 4 56692 -0.0260 0.3119 -0.12180 2014 2 5 56693 -0.0265 0.3139 -0.12334 2014 2 6 56694 -0.0269 0.3158 -0.12471 2014 2 7 56695 -0.0273 0.3178 -0.12593 2014 2 8 56696 -0.0277 0.3197 -0.12698 2014 2 9 56697 -0.0280 0.3217 -0.12794 2014 2 10 56698 -0.0282 0.3236 -0.12885 2014 2 11 56699 -0.0285 0.3256 -0.12976 2014 2 12 56700 -0.0287 0.3276 -0.13076 2014 2 13 56701 -0.0289 0.3296 -0.13187 2014 2 14 56702 -0.0290 0.3315 -0.13310 2014 2 15 56703 -0.0291 0.3335 -0.13445 2014 2 16 56704 -0.0291 0.3355 -0.13585 2014 2 17 56705 -0.0292 0.3375 -0.13733 2014 2 18 56706 -0.0291 0.3395 -0.13878 2014 2 19 56707 -0.0291 0.3415 -0.14016 2014 2 20 56708 -0.0290 0.3435 -0.14154 2014 2 21 56709 -0.0288 0.3455 -0.14282 2014 2 22 56710 -0.0287 0.3475 -0.14399 2014 2 23 56711 -0.0285 0.3495 -0.14519 2014 2 24 56712 -0.0282 0.3515 -0.14639 2014 2 25 56713 -0.0279 0.3535 -0.14761 2014 2 26 56714 -0.0276 0.3555 -0.14891 2014 2 27 56715 -0.0272 0.3575 -0.15030 2014 2 28 56716 -0.0268 0.3595 -0.15183 2014 3 1 56717 -0.0264 0.3614 -0.15343 2014 3 2 56718 -0.0259 0.3634 -0.15509 2014 3 3 56719 -0.0254 0.3654 -0.15675 2014 3 4 56720 -0.0249 0.3674 -0.15829 2014 3 5 56721 -0.0243 0.3693 -0.15967 2014 3 6 56722 -0.0237 0.3713 -0.16089 2014 3 7 56723 -0.0230 0.3732 -0.16195 2014 3 8 56724 -0.0223 0.3751 -0.16290 2014 3 9 56725 -0.0216 0.3771 -0.16381 2014 3 10 56726 -0.0208 0.3790 -0.16474 2014 3 11 56727 -0.0200 0.3809 -0.16568 2014 3 12 56728 -0.0191 0.3828 -0.16670 2014 3 13 56729 -0.0182 0.3846 -0.16784 2014 3 14 56730 -0.0173 0.3865 -0.16908 2014 3 15 56731 -0.0164 0.3884 -0.17046 2014 3 16 56732 -0.0154 0.3902 -0.17200 2014 3 17 56733 -0.0143 0.3920 -0.17367 2014 3 18 56734 -0.0133 0.3939 -0.17540 2014 3 19 56735 -0.0122 0.3957 -0.17715 2014 3 20 56736 -0.0110 0.3974 -0.17888 2014 3 21 56737 -0.0099 0.3992 -0.18049 2014 3 22 56738 -0.0087 0.4010 -0.18204 2014 3 23 56739 -0.0074 0.4027 -0.18355 2014 3 24 56740 -0.0062 0.4044 -0.18509 2014 3 25 56741 -0.0049 0.4061 -0.18669 2014 3 26 56742 -0.0035 0.4078 -0.18841 2014 3 27 56743 -0.0021 0.4095 -0.19034 2014 3 28 56744 -0.0007 0.4111 -0.19248 2014 3 29 56745 0.0007 0.4127 -0.19466 2014 3 30 56746 0.0022 0.4143 -0.19684 2014 3 31 56747 0.0037 0.4159 -0.19893 2014 4 1 56748 0.0052 0.4175 -0.20093 2014 4 2 56749 0.0068 0.4190 -0.20284 2014 4 3 56750 0.0084 0.4205 -0.20457 2014 4 4 56751 0.0100 0.4220 -0.20613 2014 4 5 56752 0.0116 0.4235 -0.20752 2014 4 6 56753 0.0133 0.4249 -0.20878 2014 4 7 56754 0.0150 0.4263 -0.20998 2014 4 8 56755 0.0168 0.4277 -0.21121 2014 4 9 56756 0.0186 0.4291 -0.21250 2014 4 10 56757 0.0203 0.4304 -0.21390 2014 4 11 56758 0.0222 0.4318 -0.21541 2014 4 12 56759 0.0240 0.4330 -0.21699 2014 4 13 56760 0.0259 0.4343 -0.21863 2014 4 14 56761 0.0278 0.4355 -0.22026 2014 4 15 56762 0.0297 0.4367 -0.22186 2014 4 16 56763 0.0317 0.4379 -0.22339 2014 4 17 56764 0.0337 0.4391 -0.22485 2014 4 18 56765 0.0357 0.4402 -0.22622 2014 4 19 56766 0.0377 0.4413 -0.22755 2014 4 20 56767 0.0397 0.4423 -0.22883 2014 4 21 56768 0.0418 0.4434 -0.23013 2014 4 22 56769 0.0439 0.4444 -0.23144 2014 4 23 56770 0.0460 0.4453 -0.23284 2014 4 24 56771 0.0481 0.4463 -0.23435 2014 4 25 56772 0.0503 0.4472 -0.23597 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) 56392 -73.81 0.30 -12.60 0.03 56393 -73.78 0.30 -12.88 0.03 56394 -73.67 0.30 -13.14 0.03 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 56392 0.267 0.119 -0.210 0.030 56393 0.270 0.119 -0.251 0.030 56394 0.287 0.119 -0.291 0.030 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).