********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 22 December 2016 Vol. XXIX No. 051 ______________________________________________________________________ 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 17 Nov 2016 at 0000 UTC = +0.6 seconds beginning 01 Jan 2017 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. * * * * A positive leap second WILL be introduced in UTC on 31 Dec 2016. * * * * 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 12 16 57738 0.11190 .00009 0.26713 .00009 -0.391475 0.000015 16 12 17 57739 0.11087 .00009 0.26657 .00009 -0.392737 0.000012 16 12 18 57740 0.10981 .00009 0.26609 .00009 -0.394023 0.000008 16 12 19 57741 0.10844 .00009 0.26593 .00009 -0.395275 0.000005 16 12 20 57742 0.10646 .00009 0.26597 .00009 -0.396587 0.000005 16 12 21 57743 0.10376 .00009 0.26588 .00009 -0.397846 0.000002 16 12 22 57744 0.10078 .00009 0.26565 .00009 -0.399104 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 = 0.1203 - 0.0378 cos A - 0.1014 sin A + 0.0194 cos C - 0.0166 sin C y = 0.3749 - 0.0946 cos A + 0.0350 sin A - 0.0166 cos C - 0.0194 sin C UT1-UTC = -0.4027 - 0.00131 (MJD - 57752) - (UT2-UT1) where A = 2*pi*(MJD-57744)/365.25 and C = 2*pi*(MJD-57744)/435. TAI-UTC(MJD 57745) = 36.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57744)**0.80 S t = 0.00025 (MJD-57744)**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 12 23 57745 0.0981 0.2654 -0.40033 2016 12 24 57746 0.0957 0.2652 -0.40148 2016 12 25 57747 0.0936 0.2652 -0.40252 2016 12 26 57748 0.0918 0.2652 -0.40344 2016 12 27 57749 0.0901 0.2653 -0.40425 2016 12 28 57750 0.0885 0.2655 -0.40501 2016 12 29 57751 0.0870 0.2658 -0.40571 2016 12 30 57752 0.0855 0.2661 -0.40641 2016 12 31 57753 0.0840 0.2664 -0.40715 2017 1 1 57754 0.0824 0.2668 0.59200 2017 1 2 57755 0.0807 0.2673 0.59102 2017 1 3 57756 0.0790 0.2678 0.58988 2017 1 4 57757 0.0773 0.2682 0.58858 2017 1 5 57758 0.0756 0.2686 0.58718 2017 1 6 57759 0.0740 0.2690 0.58569 2017 1 7 57760 0.0725 0.2696 0.58418 2017 1 8 57761 0.0709 0.2701 0.58273 2017 1 9 57762 0.0693 0.2707 0.58137 2017 1 10 57763 0.0677 0.2714 0.58011 2017 1 11 57764 0.0660 0.2720 0.57894 2017 1 12 57765 0.0644 0.2727 0.57780 2017 1 13 57766 0.0628 0.2733 0.57662 2017 1 14 57767 0.0613 0.2740 0.57537 2017 1 15 57768 0.0598 0.2748 0.57403 2017 1 16 57769 0.0583 0.2755 0.57263 2017 1 17 57770 0.0568 0.2763 0.57121 2017 1 18 57771 0.0554 0.2771 0.56979 2017 1 19 57772 0.0540 0.2780 0.56841 2017 1 20 57773 0.0525 0.2788 0.56712 2017 1 21 57774 0.0511 0.2797 0.56593 2017 1 22 57775 0.0498 0.2807 0.56483 2017 1 23 57776 0.0484 0.2816 0.56381 2017 1 24 57777 0.0470 0.2825 0.56285 2017 1 25 57778 0.0457 0.2835 0.56192 2017 1 26 57779 0.0444 0.2845 0.56097 2017 1 27 57780 0.0431 0.2855 0.55998 2017 1 28 57781 0.0418 0.2866 0.55890 2017 1 29 57782 0.0406 0.2876 0.55770 2017 1 30 57783 0.0394 0.2887 0.55634 2017 1 31 57784 0.0381 0.2898 0.55483 2017 2 1 57785 0.0370 0.2909 0.55322 2017 2 2 57786 0.0358 0.2921 0.55154 2017 2 3 57787 0.0347 0.2932 0.54986 2017 2 4 57788 0.0335 0.2944 0.54823 2017 2 5 57789 0.0324 0.2956 0.54670 2017 2 6 57790 0.0314 0.2968 0.54527 2017 2 7 57791 0.0303 0.2980 0.54393 2017 2 8 57792 0.0293 0.2993 0.54265 2017 2 9 57793 0.0283 0.3006 0.54136 2017 2 10 57794 0.0273 0.3018 0.54003 2017 2 11 57795 0.0264 0.3031 0.53861 2017 2 12 57796 0.0255 0.3044 0.53710 2017 2 13 57797 0.0246 0.3058 0.53554 2017 2 14 57798 0.0237 0.3071 0.53395 2017 2 15 57799 0.0229 0.3085 0.53239 2017 2 16 57800 0.0221 0.3098 0.53087 2017 2 17 57801 0.0213 0.3112 0.52942 2017 2 18 57802 0.0205 0.3126 0.52807 2017 2 19 57803 0.0198 0.3140 0.52680 2017 2 20 57804 0.0191 0.3154 0.52562 2017 2 21 57805 0.0184 0.3168 0.52449 2017 2 22 57806 0.0177 0.3183 0.52337 2017 2 23 57807 0.0171 0.3197 0.52221 2017 2 24 57808 0.0165 0.3212 0.52098 2017 2 25 57809 0.0159 0.3227 0.51961 2017 2 26 57810 0.0154 0.3241 0.51807 2017 2 27 57811 0.0149 0.3256 0.51636 2017 2 28 57812 0.0144 0.3271 0.51450 2017 3 1 57813 0.0139 0.3286 0.51255 2017 3 2 57814 0.0135 0.3302 0.51057 2017 3 3 57815 0.0131 0.3317 0.50865 2017 3 4 57816 0.0127 0.3332 0.50682 2017 3 5 57817 0.0124 0.3347 0.50512 2017 3 6 57818 0.0120 0.3363 0.50354 2017 3 7 57819 0.0118 0.3378 0.50202 2017 3 8 57820 0.0115 0.3394 0.50052 2017 3 9 57821 0.0113 0.3409 0.49898 2017 3 10 57822 0.0111 0.3425 0.49737 2017 3 11 57823 0.0109 0.3441 0.49565 2017 3 12 57824 0.0108 0.3456 0.49385 2017 3 13 57825 0.0107 0.3472 0.49199 2017 3 14 57826 0.0106 0.3488 0.49013 2017 3 15 57827 0.0105 0.3503 0.48831 2017 3 16 57828 0.0105 0.3519 0.48654 2017 3 17 57829 0.0105 0.3535 0.48487 2017 3 18 57830 0.0106 0.3551 0.48329 2017 3 19 57831 0.0106 0.3566 0.48181 2017 3 20 57832 0.0107 0.3582 0.48040 2017 3 21 57833 0.0109 0.3598 0.47902 2017 3 22 57834 0.0110 0.3614 0.47764 2017 3 23 57835 0.0112 0.3629 0.47620 2017 3 24 57836 0.0114 0.3645 0.47466 2017 3 25 57837 0.0117 0.3661 0.47297 2017 3 26 57838 0.0119 0.3676 0.47111 2017 3 27 57839 0.0122 0.3692 0.46907 2017 3 28 57840 0.0126 0.3708 0.46689 2017 3 29 57841 0.0129 0.3723 0.46464 2017 3 30 57842 0.0133 0.3739 0.46242 2017 3 31 57843 0.0137 0.3754 0.46030 2017 4 1 57844 0.0142 0.3769 0.45833 2017 4 2 57845 0.0147 0.3785 0.45650 2017 4 3 57846 0.0152 0.3800 0.45478 2017 4 4 57847 0.0157 0.3815 0.45312 2017 4 5 57848 0.0163 0.3830 0.45145 2017 4 6 57849 0.0168 0.3845 0.44974 2017 4 7 57850 0.0175 0.3860 0.44797 2017 4 8 57851 0.0181 0.3875 0.44612 2017 4 9 57852 0.0188 0.3890 0.44423 2017 4 10 57853 0.0195 0.3904 0.44235 2017 4 11 57854 0.0202 0.3919 0.44049 2017 4 12 57855 0.0209 0.3933 0.43871 2017 4 13 57856 0.0217 0.3948 0.43701 2017 4 14 57857 0.0225 0.3962 0.43542 2017 4 15 57858 0.0233 0.3976 0.43394 2017 4 16 57859 0.0242 0.3990 0.43254 2017 4 17 57860 0.0251 0.4004 0.43121 2017 4 18 57861 0.0260 0.4018 0.42990 2017 4 19 57862 0.0269 0.4031 0.42856 2017 4 20 57863 0.0278 0.4045 0.42715 2017 4 21 57864 0.0288 0.4058 0.42563 2017 4 22 57865 0.0298 0.4071 0.42395 2017 4 23 57866 0.0308 0.4084 0.42210 2017 4 24 57867 0.0319 0.4097 0.42010 2017 4 25 57868 0.0329 0.4110 0.41799 2017 4 26 57869 0.0340 0.4122 0.41587 2017 4 27 57870 0.0351 0.4135 0.41381 2017 4 28 57871 0.0363 0.4147 0.41189 2017 4 29 57872 0.0374 0.4159 0.41014 2017 4 30 57873 0.0386 0.4171 0.40853 2017 5 1 57874 0.0398 0.4183 0.40702 2017 5 2 57875 0.0410 0.4194 0.40555 2017 5 3 57876 0.0422 0.4206 0.40406 2017 5 4 57877 0.0435 0.4217 0.40252 2017 5 5 57878 0.0448 0.4228 0.40093 2017 5 6 57879 0.0461 0.4239 0.39931 2017 5 7 57880 0.0474 0.4249 0.39769 2017 5 8 57881 0.0487 0.4260 0.39610 2017 5 9 57882 0.0501 0.4270 0.39457 2017 5 10 57883 0.0514 0.4280 0.39315 2017 5 11 57884 0.0528 0.4290 0.39183 2017 5 12 57885 0.0542 0.4299 0.39064 2017 5 13 57886 0.0556 0.4309 0.38955 2017 5 14 57887 0.0571 0.4318 0.38855 2017 5 15 57888 0.0585 0.4327 0.38760 2017 5 16 57889 0.0600 0.4336 0.38666 2017 5 17 57890 0.0615 0.4344 0.38568 2017 5 18 57891 0.0630 0.4352 0.38462 2017 5 19 57892 0.0645 0.4361 0.38344 2017 5 20 57893 0.0660 0.4368 0.38211 2017 5 21 57894 0.0675 0.4376 0.38064 2017 5 22 57895 0.0690 0.4383 0.37904 2017 5 23 57896 0.0706 0.4391 0.37739 2017 5 24 57897 0.0722 0.4397 0.37575 2017 5 25 57898 0.0737 0.4404 0.37421 2017 5 26 57899 0.0753 0.4411 0.37282 2017 5 27 57900 0.0769 0.4417 0.37160 2017 5 28 57901 0.0785 0.4423 0.37050 2017 5 29 57902 0.0801 0.4429 0.36947 2017 5 30 57903 0.0818 0.4434 0.36844 2017 5 31 57904 0.0834 0.4439 0.36737 2017 6 1 57905 0.0850 0.4444 0.36626 2017 6 2 57906 0.0867 0.4449 0.36513 2017 6 3 57907 0.0883 0.4454 0.36401 2017 6 4 57908 0.0900 0.4458 0.36292 2017 6 5 57909 0.0917 0.4462 0.36191 2017 6 6 57910 0.0933 0.4465 0.36099 2017 6 7 57911 0.0950 0.4469 0.36019 2017 6 8 57912 0.0967 0.4472 0.35951 2017 6 9 57913 0.0984 0.4475 0.35894 2017 6 10 57914 0.1001 0.4478 0.35847 2017 6 11 57915 0.1017 0.4480 0.35807 2017 6 12 57916 0.1034 0.4483 0.35769 2017 6 13 57917 0.1051 0.4485 0.35729 2017 6 14 57918 0.1068 0.4486 0.35683 2017 6 15 57919 0.1085 0.4488 0.35627 2017 6 16 57920 0.1102 0.4489 0.35559 2017 6 17 57921 0.1119 0.4490 0.35479 2017 6 18 57922 0.1136 0.4490 0.35387 2017 6 19 57923 0.1153 0.4491 0.35288 2017 6 20 57924 0.1170 0.4491 0.35188 2017 6 21 57925 0.1187 0.4491 0.35094 2017 6 22 57926 0.1204 0.4490 0.35013 2017 6 23 57927 0.1220 0.4490 0.34947 2017 6 24 57928 0.1237 0.4489 0.34896 2017 6 25 57929 0.1254 0.4488 0.34854 2017 6 26 57930 0.1271 0.4486 0.34816 2017 6 27 57931 0.1287 0.4485 0.34775 2017 6 28 57932 0.1304 0.4483 0.34731 2017 6 29 57933 0.1320 0.4481 0.34685 2017 6 30 57934 0.1337 0.4478 0.34638 2017 7 1 57935 0.1353 0.4476 0.34594 2017 7 2 57936 0.1370 0.4473 0.34556 2017 7 3 57937 0.1386 0.4470 0.34526 2017 7 4 57938 0.1402 0.4466 0.34504 2017 7 5 57939 0.1418 0.4463 0.34492 2017 7 6 57940 0.1434 0.4459 0.34487 2017 7 7 57941 0.1450 0.4455 0.34489 2017 7 8 57942 0.1466 0.4450 0.34492 2017 7 9 57943 0.1481 0.4446 0.34494 2017 7 10 57944 0.1497 0.4441 0.34491 2017 7 11 57945 0.1512 0.4436 0.34478 2017 7 12 57946 0.1528 0.4430 0.34455 2017 7 13 57947 0.1543 0.4425 0.34420 2017 7 14 57948 0.1558 0.4419 0.34372 2017 7 15 57949 0.1573 0.4413 0.34314 2017 7 16 57950 0.1588 0.4407 0.34249 2017 7 17 57951 0.1602 0.4400 0.34179 2017 7 18 57952 0.1617 0.4393 0.34109 2017 7 19 57953 0.1631 0.4386 0.34043 2017 7 20 57954 0.1646 0.4379 0.33984 2017 7 21 57955 0.1660 0.4372 0.33932 2017 7 22 57956 0.1674 0.4364 0.33883 2017 7 23 57957 0.1687 0.4356 0.33830 2017 7 24 57958 0.1701 0.4348 0.33767 2017 7 25 57959 0.1714 0.4340 0.33691 2017 7 26 57960 0.1727 0.4332 0.33602 2017 7 27 57961 0.1740 0.4323 0.33504 2017 7 28 57962 0.1753 0.4314 0.33403 2017 7 29 57963 0.1766 0.4305 0.33304 2017 7 30 57964 0.1778 0.4296 0.33212 2017 7 31 57965 0.1791 0.4287 0.33130 2017 8 1 57966 0.1803 0.4277 0.33058 2017 8 2 57967 0.1815 0.4267 0.32990 2017 8 3 57968 0.1826 0.4257 0.32931 2017 8 4 57969 0.1838 0.4247 0.32876 2017 8 5 57970 0.1849 0.4237 0.32823 2017 8 6 57971 0.1860 0.4226 0.32760 2017 8 7 57972 0.1871 0.4216 0.32681 2017 8 8 57973 0.1881 0.4205 0.32592 2017 8 9 57974 0.1892 0.4194 0.32492 2017 8 10 57975 0.1902 0.4183 0.32387 2017 8 11 57976 0.1912 0.4171 0.32271 2017 8 12 57977 0.1922 0.4160 0.32149 2017 8 13 57978 0.1931 0.4148 0.32022 2017 8 14 57979 0.1940 0.4137 0.31890 2017 8 15 57980 0.1949 0.4125 0.31767 2017 8 16 57981 0.1958 0.4113 0.31659 2017 8 17 57982 0.1967 0.4101 0.31566 2017 8 18 57983 0.1975 0.4088 0.31486 2017 8 19 57984 0.1983 0.4076 0.31414 2017 8 20 57985 0.1991 0.4063 0.31343 2017 8 21 57986 0.1998 0.4051 0.31263 2017 8 22 57987 0.2005 0.4038 0.31163 2017 8 23 57988 0.2012 0.4025 0.31059 2017 8 24 57989 0.2019 0.4012 0.30942 2017 8 25 57990 0.2026 0.3999 0.30829 2017 8 26 57991 0.2032 0.3986 0.30722 2017 8 27 57992 0.2038 0.3972 0.30623 2017 8 28 57993 0.2043 0.3959 0.30539 2017 8 29 57994 0.2049 0.3946 0.30468 2017 8 30 57995 0.2054 0.3932 0.30415 2017 8 31 57996 0.2059 0.3918 0.30361 2017 9 1 57997 0.2064 0.3905 0.30311 2017 9 2 57998 0.2068 0.3891 0.30258 2017 9 3 57999 0.2072 0.3877 0.30202 2017 9 4 58000 0.2076 0.3863 0.30142 2017 9 5 58001 0.2079 0.3849 0.30067 2017 9 6 58002 0.2083 0.3835 0.29971 2017 9 7 58003 0.2086 0.3821 0.29851 2017 9 8 58004 0.2088 0.3807 0.29719 2017 9 9 58005 0.2091 0.3793 0.29585 2017 9 10 58006 0.2093 0.3779 0.29450 2017 9 11 58007 0.2095 0.3764 0.29321 2017 9 12 58008 0.2097 0.3750 0.29197 2017 9 13 58009 0.2098 0.3736 0.29096 2017 9 14 58010 0.2099 0.3722 0.29001 2017 9 15 58011 0.2100 0.3707 0.28905 2017 9 16 58012 0.2100 0.3693 0.28809 2017 9 17 58013 0.2101 0.3679 0.28697 2017 9 18 58014 0.2101 0.3664 0.28569 2017 9 19 58015 0.2100 0.3650 0.28427 2017 9 20 58016 0.2100 0.3636 0.28278 2017 9 21 58017 0.2099 0.3621 0.28125 2017 9 22 58018 0.2098 0.3607 0.27973 2017 9 23 58019 0.2096 0.3593 0.27840 2017 9 24 58020 0.2095 0.3578 0.27708 2017 9 25 58021 0.2093 0.3564 0.27599 2017 9 26 58022 0.2090 0.3550 0.27492 2017 9 27 58023 0.2088 0.3536 0.27390 2017 9 28 58024 0.2085 0.3522 0.27281 2017 9 29 58025 0.2082 0.3508 0.27170 2017 9 30 58026 0.2079 0.3494 0.27050 2017 10 1 58027 0.2075 0.3480 0.26918 2017 10 2 58028 0.2072 0.3466 0.26769 2017 10 3 58029 0.2068 0.3452 0.26606 2017 10 4 58030 0.2063 0.3438 0.26418 2017 10 5 58031 0.2059 0.3424 0.26214 2017 10 6 58032 0.2054 0.3411 0.26003 2017 10 7 58033 0.2049 0.3397 0.25800 2017 10 8 58034 0.2043 0.3384 0.25598 2017 10 9 58035 0.2038 0.3370 0.25397 2017 10 10 58036 0.2032 0.3357 0.25218 2017 10 11 58037 0.2026 0.3344 0.25036 2017 10 12 58038 0.2020 0.3330 0.24872 2017 10 13 58039 0.2013 0.3317 0.24711 2017 10 14 58040 0.2006 0.3305 0.24544 2017 10 15 58041 0.1999 0.3292 0.24367 2017 10 16 58042 0.1992 0.3279 0.24179 2017 10 17 58043 0.1984 0.3266 0.23978 2017 10 18 58044 0.1976 0.3254 0.23774 2017 10 19 58045 0.1969 0.3242 0.23577 2017 10 20 58046 0.1960 0.3229 0.23388 2017 10 21 58047 0.1952 0.3217 0.23201 2017 10 22 58048 0.1943 0.3205 0.23040 2017 10 23 58049 0.1934 0.3193 0.22882 2017 10 24 58050 0.1925 0.3182 0.22726 2017 10 25 58051 0.1916 0.3170 0.22570 2017 10 26 58052 0.1907 0.3159 0.22421 2017 10 27 58053 0.1897 0.3148 0.22272 2017 10 28 58054 0.1887 0.3136 0.22114 2017 10 29 58055 0.1877 0.3125 0.21948 2017 10 30 58056 0.1867 0.3115 0.21779 2017 10 31 58057 0.1856 0.3104 0.21600 2017 11 1 58058 0.1845 0.3094 0.21395 2017 11 2 58059 0.1835 0.3083 0.21179 2017 11 3 58060 0.1823 0.3073 0.20958 2017 11 4 58061 0.1812 0.3063 0.20737 2017 11 5 58062 0.1801 0.3053 0.20530 2017 11 6 58063 0.1789 0.3044 0.20338 2017 11 7 58064 0.1778 0.3034 0.20164 2017 11 8 58065 0.1766 0.3025 0.19999 2017 11 9 58066 0.1754 0.3016 0.19856 2017 11 10 58067 0.1741 0.3007 0.19707 2017 11 11 58068 0.1729 0.2999 0.19554 2017 11 12 58069 0.1717 0.2990 0.19390 2017 11 13 58070 0.1704 0.2982 0.19219 2017 11 14 58071 0.1691 0.2974 0.19043 2017 11 15 58072 0.1678 0.2966 0.18861 2017 11 16 58073 0.1665 0.2958 0.18691 2017 11 17 58074 0.1652 0.2951 0.18516 2017 11 18 58075 0.1639 0.2944 0.18359 2017 11 19 58076 0.1625 0.2937 0.18203 2017 11 20 58077 0.1612 0.2930 0.18056 2017 11 21 58078 0.1598 0.2923 0.17920 2017 11 22 58079 0.1585 0.2917 0.17799 2017 11 23 58080 0.1571 0.2911 0.17665 2017 11 24 58081 0.1557 0.2905 0.17550 2017 11 25 58082 0.1543 0.2899 0.17427 2017 11 26 58083 0.1529 0.2893 0.17295 2017 11 27 58084 0.1514 0.2888 0.17152 2017 11 28 58085 0.1500 0.2883 0.16989 2017 11 29 58086 0.1486 0.2878 0.16817 2017 11 30 58087 0.1471 0.2874 0.16635 2017 12 1 58088 0.1457 0.2869 0.16436 2017 12 2 58089 0.1442 0.2865 0.16240 2017 12 3 58090 0.1428 0.2861 0.16047 2017 12 4 58091 0.1413 0.2857 0.15863 2017 12 5 58092 0.1399 0.2854 0.15684 2017 12 6 58093 0.1384 0.2851 0.15507 2017 12 7 58094 0.1369 0.2848 0.15327 2017 12 8 58095 0.1354 0.2845 0.15145 2017 12 9 58096 0.1339 0.2842 0.14952 2017 12 10 58097 0.1325 0.2840 0.14753 2017 12 11 58098 0.1310 0.2838 0.14547 2017 12 12 58099 0.1295 0.2836 0.14342 2017 12 13 58100 0.1280 0.2835 0.14153 2017 12 14 58101 0.1265 0.2833 0.13963 2017 12 15 58102 0.1250 0.2832 0.13787 2017 12 16 58103 0.1235 0.2831 0.13611 2017 12 17 58104 0.1220 0.2831 0.13450 2017 12 18 58105 0.1205 0.2830 0.13293 2017 12 19 58106 0.1191 0.2830 0.13137 2017 12 20 58107 0.1176 0.2830 0.12987 2017 12 21 58108 0.1161 0.2830 0.12830 2017 12 22 58109 0.1146 0.2831 0.12666 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) 57722 -100.25 0.30 -9.86 0.02 57723 -100.07 0.30 -9.89 0.02 57724 -99.96 0.30 -9.95 0.02 57725 -99.97 0.30 -10.04 0.15 57726 -100.09 0.30 -10.10 0.06 57727 -100.18 0.30 -10.04 0.06 57728 -100.17 0.30 -9.87 0.06 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57722 0.112 0.119 -0.127 0.020 57723 0.117 0.119 -0.123 0.020 57724 0.109 0.119 -0.145 0.020 57725 0.093 0.119 -0.163 0.150 57726 0.066 0.119 -0.169 0.060 57727 0.039 0.119 -0.161 0.060 57728 0.007 0.119 -0.165 0.060 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).