********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 10 August 2017 Vol. XXX No. 032 ______________________________________________________________________ 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 = +0.3 seconds beginning 29 Jun 2017 at 0000 UTC Beginning 1 January 2017: TAI-UTC = 37.000 000 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 be available by 20:00 UTC. * * * * We are currently not able to receive email at * * ser7@maia.usno.navy.mil. Questions and enquiries can now be * * directed to the following email account: navobsy_eop.fct@navy.mil * * * * 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 17 8 4 57969 0.21457 .00009 0.40541 .00009 0.346165 0.000043 17 8 5 57970 0.21543 .00009 0.40420 .00009 0.346087 0.000039 17 8 6 57971 0.21621 .00009 0.40292 .00009 0.345958 0.000039 17 8 7 57972 0.21722 .00009 0.40147 .00009 0.345831 0.000028 17 8 8 57973 0.21856 .00009 0.39985 .00009 0.345635 0.000027 17 8 9 57974 0.22013 .00009 0.39821 .00009 0.345294 0.000024 17 8 10 57975 0.22189 .00009 0.39653 .00009 0.344808 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 = 0.1173 + 0.1317 cos A + 0.0547 sin A - 0.0344 cos C - 0.0120 sin C y = 0.3572 + 0.0552 cos A - 0.1154 sin A - 0.0120 cos C + 0.0344 sin C UT1-UTC = 0.3174 - 0.00112 (MJD - 57983) - (UT2-UT1) where A = 2*pi*(MJD-57975)/365.25 and C = 2*pi*(MJD-57975)/435. TAI-UTC(MJD 57976) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57975)**0.80 S t = 0.00025 (MJD-57975)**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) 2017 8 11 57976 0.2234 0.3951 0.34420 2017 8 12 57977 0.2248 0.3936 0.34353 2017 8 13 57978 0.2259 0.3922 0.34286 2017 8 14 57979 0.2267 0.3908 0.34224 2017 8 15 57980 0.2274 0.3893 0.34172 2017 8 16 57981 0.2279 0.3878 0.34131 2017 8 17 57982 0.2283 0.3862 0.34104 2017 8 18 57983 0.2287 0.3847 0.34084 2017 8 19 57984 0.2290 0.3831 0.34064 2017 8 20 57985 0.2294 0.3814 0.34035 2017 8 21 57986 0.2297 0.3798 0.33991 2017 8 22 57987 0.2301 0.3781 0.33930 2017 8 23 57988 0.2303 0.3765 0.33853 2017 8 24 57989 0.2305 0.3750 0.33768 2017 8 25 57990 0.2306 0.3734 0.33679 2017 8 26 57991 0.2307 0.3718 0.33593 2017 8 27 57992 0.2308 0.3701 0.33514 2017 8 28 57993 0.2309 0.3685 0.33442 2017 8 29 57994 0.2309 0.3668 0.33378 2017 8 30 57995 0.2310 0.3651 0.33322 2017 8 31 57996 0.2310 0.3635 0.33274 2017 9 1 57997 0.2310 0.3618 0.33229 2017 9 2 57998 0.2309 0.3602 0.33182 2017 9 3 57999 0.2307 0.3586 0.33129 2017 9 4 58000 0.2305 0.3569 0.33066 2017 9 5 58001 0.2303 0.3553 0.32988 2017 9 6 58002 0.2300 0.3537 0.32891 2017 9 7 58003 0.2297 0.3520 0.32777 2017 9 8 58004 0.2294 0.3504 0.32648 2017 9 9 58005 0.2290 0.3487 0.32512 2017 9 10 58006 0.2286 0.3471 0.32377 2017 9 11 58007 0.2281 0.3455 0.32247 2017 9 12 58008 0.2276 0.3439 0.32128 2017 9 13 58009 0.2271 0.3422 0.32020 2017 9 14 58010 0.2266 0.3406 0.31920 2017 9 15 58011 0.2260 0.3390 0.31824 2017 9 16 58012 0.2254 0.3374 0.31725 2017 9 17 58013 0.2247 0.3358 0.31617 2017 9 18 58014 0.2241 0.3342 0.31499 2017 9 19 58015 0.2234 0.3327 0.31369 2017 9 20 58016 0.2227 0.3311 0.31230 2017 9 21 58017 0.2219 0.3295 0.31087 2017 9 22 58018 0.2211 0.3280 0.30946 2017 9 23 58019 0.2203 0.3264 0.30812 2017 9 24 58020 0.2194 0.3249 0.30686 2017 9 25 58021 0.2185 0.3234 0.30569 2017 9 26 58022 0.2176 0.3219 0.30461 2017 9 27 58023 0.2167 0.3204 0.30360 2017 9 28 58024 0.2157 0.3189 0.30263 2017 9 29 58025 0.2147 0.3174 0.30166 2017 9 30 58026 0.2137 0.3160 0.30063 2017 10 1 58027 0.2126 0.3145 0.29951 2017 10 2 58028 0.2115 0.3131 0.29826 2017 10 3 58029 0.2104 0.3117 0.29685 2017 10 4 58030 0.2092 0.3102 0.29525 2017 10 5 58031 0.2081 0.3089 0.29351 2017 10 6 58032 0.2069 0.3075 0.29165 2017 10 7 58033 0.2056 0.3061 0.28976 2017 10 8 58034 0.2044 0.3048 0.28792 2017 10 9 58035 0.2031 0.3035 0.28619 2017 10 10 58036 0.2018 0.3022 0.28459 2017 10 11 58037 0.2005 0.3009 0.28312 2017 10 12 58038 0.1991 0.2996 0.28171 2017 10 13 58039 0.1977 0.2983 0.28031 2017 10 14 58040 0.1963 0.2971 0.27885 2017 10 15 58041 0.1949 0.2959 0.27729 2017 10 16 58042 0.1935 0.2947 0.27563 2017 10 17 58043 0.1920 0.2935 0.27388 2017 10 18 58044 0.1905 0.2924 0.27208 2017 10 19 58045 0.1890 0.2912 0.27029 2017 10 20 58046 0.1874 0.2901 0.26855 2017 10 21 58047 0.1859 0.2890 0.26691 2017 10 22 58048 0.1843 0.2879 0.26540 2017 10 23 58049 0.1827 0.2869 0.26401 2017 10 24 58050 0.1811 0.2859 0.26273 2017 10 25 58051 0.1794 0.2849 0.26153 2017 10 26 58052 0.1777 0.2839 0.26038 2017 10 27 58053 0.1761 0.2829 0.25922 2017 10 28 58054 0.1744 0.2820 0.25800 2017 10 29 58055 0.1726 0.2811 0.25669 2017 10 30 58056 0.1709 0.2802 0.25525 2017 10 31 58057 0.1692 0.2793 0.25366 2017 11 1 58058 0.1674 0.2785 0.25191 2017 11 2 58059 0.1656 0.2777 0.25004 2017 11 3 58060 0.1638 0.2769 0.24809 2017 11 4 58061 0.1620 0.2761 0.24617 2017 11 5 58062 0.1601 0.2754 0.24433 2017 11 6 58063 0.1583 0.2747 0.24264 2017 11 7 58064 0.1564 0.2740 0.24110 2017 11 8 58065 0.1546 0.2733 0.23966 2017 11 9 58066 0.1527 0.2727 0.23828 2017 11 10 58067 0.1508 0.2721 0.23688 2017 11 11 58068 0.1489 0.2715 0.23543 2017 11 12 58069 0.1469 0.2710 0.23390 2017 11 13 58070 0.1450 0.2705 0.23230 2017 11 14 58071 0.1431 0.2700 0.23068 2017 11 15 58072 0.1411 0.2695 0.22907 2017 11 16 58073 0.1392 0.2691 0.22751 2017 11 17 58074 0.1372 0.2687 0.22605 2017 11 18 58075 0.1352 0.2683 0.22470 2017 11 19 58076 0.1332 0.2679 0.22346 2017 11 20 58077 0.1312 0.2676 0.22235 2017 11 21 58078 0.1292 0.2673 0.22132 2017 11 22 58079 0.1272 0.2670 0.22036 2017 11 23 58080 0.1252 0.2668 0.21942 2017 11 24 58081 0.1232 0.2666 0.21844 2017 11 25 58082 0.1212 0.2664 0.21740 2017 11 26 58083 0.1191 0.2662 0.21625 2017 11 27 58084 0.1171 0.2661 0.21492 2017 11 28 58085 0.1151 0.2660 0.21344 2017 11 29 58086 0.1130 0.2660 0.21183 2017 11 30 58087 0.1110 0.2659 0.21012 2017 12 1 58088 0.1090 0.2659 0.20836 2017 12 2 58089 0.1069 0.2660 0.20665 2017 12 3 58090 0.1049 0.2660 0.20504 2017 12 4 58091 0.1028 0.2661 0.20358 2017 12 5 58092 0.1008 0.2662 0.20224 2017 12 6 58093 0.0988 0.2664 0.20097 2017 12 7 58094 0.0967 0.2665 0.19970 2017 12 8 58095 0.0947 0.2667 0.19838 2017 12 9 58096 0.0927 0.2670 0.19698 2017 12 10 58097 0.0907 0.2672 0.19552 2017 12 11 58098 0.0887 0.2675 0.19402 2017 12 12 58099 0.0866 0.2679 0.19254 2017 12 13 58100 0.0846 0.2682 0.19112 2017 12 14 58101 0.0826 0.2686 0.18979 2017 12 15 58102 0.0807 0.2690 0.18858 2017 12 16 58103 0.0787 0.2694 0.18749 2017 12 17 58104 0.0767 0.2699 0.18652 2017 12 18 58105 0.0747 0.2704 0.18565 2017 12 19 58106 0.0728 0.2709 0.18485 2017 12 20 58107 0.0708 0.2715 0.18408 2017 12 21 58108 0.0689 0.2721 0.18331 2017 12 22 58109 0.0669 0.2727 0.18247 2017 12 23 58110 0.0650 0.2733 0.18154 2017 12 24 58111 0.0631 0.2740 0.18049 2017 12 25 58112 0.0612 0.2747 0.17930 2017 12 26 58113 0.0593 0.2754 0.17799 2017 12 27 58114 0.0575 0.2762 0.17657 2017 12 28 58115 0.0556 0.2770 0.17509 2017 12 29 58116 0.0538 0.2778 0.17360 2017 12 30 58117 0.0520 0.2786 0.17218 2017 12 31 58118 0.0501 0.2795 0.17085 2018 1 1 58119 0.0484 0.2804 0.16964 2018 1 2 58120 0.0466 0.2813 0.16851 2018 1 3 58121 0.0448 0.2822 0.16739 2018 1 4 58122 0.0431 0.2832 0.16621 2018 1 5 58123 0.0413 0.2842 0.16494 2018 1 6 58124 0.0396 0.2852 0.16358 2018 1 7 58125 0.0380 0.2863 0.16216 2018 1 8 58126 0.0363 0.2873 0.16074 2018 1 9 58127 0.0346 0.2884 0.15937 2018 1 10 58128 0.0330 0.2896 0.15809 2018 1 11 58129 0.0314 0.2907 0.15693 2018 1 12 58130 0.0298 0.2919 0.15589 2018 1 13 58131 0.0282 0.2931 0.15497 2018 1 14 58132 0.0267 0.2943 0.15416 2018 1 15 58133 0.0252 0.2955 0.15342 2018 1 16 58134 0.0237 0.2968 0.15270 2018 1 17 58135 0.0222 0.2981 0.15198 2018 1 18 58136 0.0208 0.2994 0.15121 2018 1 19 58137 0.0193 0.3008 0.15034 2018 1 20 58138 0.0179 0.3021 0.14935 2018 1 21 58139 0.0166 0.3035 0.14823 2018 1 22 58140 0.0152 0.3049 0.14697 2018 1 23 58141 0.0139 0.3063 0.14561 2018 1 24 58142 0.0126 0.3077 0.14418 2018 1 25 58143 0.0113 0.3092 0.14273 2018 1 26 58144 0.0101 0.3107 0.14131 2018 1 27 58145 0.0088 0.3122 0.13996 2018 1 28 58146 0.0076 0.3137 0.13870 2018 1 29 58147 0.0065 0.3152 0.13751 2018 1 30 58148 0.0054 0.3168 0.13634 2018 1 31 58149 0.0042 0.3184 0.13511 2018 2 1 58150 0.0032 0.3200 0.13377 2018 2 2 58151 0.0021 0.3216 0.13230 2018 2 3 58152 0.0011 0.3232 0.13072 2018 2 4 58153 0.0001 0.3248 0.12910 2018 2 5 58154 -0.0008 0.3265 0.12750 2018 2 6 58155 -0.0018 0.3281 0.12599 2018 2 7 58156 -0.0027 0.3298 0.12460 2018 2 8 58157 -0.0035 0.3315 0.12335 2018 2 9 58158 -0.0044 0.3332 0.12224 2018 2 10 58159 -0.0052 0.3350 0.12125 2018 2 11 58160 -0.0059 0.3367 0.12036 2018 2 12 58161 -0.0067 0.3385 0.11954 2018 2 13 58162 -0.0074 0.3402 0.11873 2018 2 14 58163 -0.0081 0.3420 0.11791 2018 2 15 58164 -0.0087 0.3438 0.11702 2018 2 16 58165 -0.0093 0.3456 0.11605 2018 2 17 58166 -0.0099 0.3474 0.11497 2018 2 18 58167 -0.0104 0.3492 0.11377 2018 2 19 58168 -0.0110 0.3510 0.11246 2018 2 20 58169 -0.0114 0.3529 0.11109 2018 2 21 58170 -0.0119 0.3547 0.10968 2018 2 22 58171 -0.0123 0.3566 0.10829 2018 2 23 58172 -0.0127 0.3584 0.10695 2018 2 24 58173 -0.0130 0.3603 0.10566 2018 2 25 58174 -0.0133 0.3621 0.10441 2018 2 26 58175 -0.0136 0.3640 0.10315 2018 2 27 58176 -0.0138 0.3659 0.10183 2018 2 28 58177 -0.0140 0.3678 0.10037 2018 3 1 58178 -0.0142 0.3697 0.09875 2018 3 2 58179 -0.0143 0.3716 0.09699 2018 3 3 58180 -0.0144 0.3735 0.09515 2018 3 4 58181 -0.0145 0.3754 0.09330 2018 3 5 58182 -0.0145 0.3773 0.09152 2018 3 6 58183 -0.0145 0.3792 0.08987 2018 3 7 58184 -0.0145 0.3811 0.08836 2018 3 8 58185 -0.0144 0.3830 0.08700 2018 3 9 58186 -0.0143 0.3849 0.08575 2018 3 10 58187 -0.0142 0.3868 0.08460 2018 3 11 58188 -0.0140 0.3887 0.08348 2018 3 12 58189 -0.0138 0.3906 0.08237 2018 3 13 58190 -0.0136 0.3925 0.08121 2018 3 14 58191 -0.0133 0.3944 0.07995 2018 3 15 58192 -0.0130 0.3963 0.07858 2018 3 16 58193 -0.0126 0.3982 0.07709 2018 3 17 58194 -0.0122 0.4001 0.07546 2018 3 18 58195 -0.0118 0.4020 0.07371 2018 3 19 58196 -0.0114 0.4039 0.07184 2018 3 20 58197 -0.0109 0.4058 0.06990 2018 3 21 58198 -0.0104 0.4076 0.06795 2018 3 22 58199 -0.0098 0.4095 0.06608 2018 3 23 58200 -0.0092 0.4114 0.06432 2018 3 24 58201 -0.0086 0.4132 0.06267 2018 3 25 58202 -0.0080 0.4151 0.06108 2018 3 26 58203 -0.0073 0.4169 0.05951 2018 3 27 58204 -0.0066 0.4187 0.05783 2018 3 28 58205 -0.0058 0.4205 0.05604 2018 3 29 58206 -0.0050 0.4223 0.05412 2018 3 30 58207 -0.0042 0.4241 0.05208 2018 3 31 58208 -0.0033 0.4259 0.04997 2018 4 1 58209 -0.0025 0.4277 0.04785 2018 4 2 58210 -0.0016 0.4295 0.04587 2018 4 3 58211 -0.0006 0.4312 0.04402 2018 4 4 58212 0.0004 0.4329 0.04232 2018 4 5 58213 0.0014 0.4347 0.04079 2018 4 6 58214 0.0024 0.4364 0.03942 2018 4 7 58215 0.0035 0.4381 0.03810 2018 4 8 58216 0.0046 0.4398 0.03686 2018 4 9 58217 0.0057 0.4414 0.03563 2018 4 10 58218 0.0069 0.4431 0.03435 2018 4 11 58219 0.0080 0.4447 0.03299 2018 4 12 58220 0.0093 0.4463 0.03150 2018 4 13 58221 0.0105 0.4479 0.02986 2018 4 14 58222 0.0118 0.4495 0.02809 2018 4 15 58223 0.0131 0.4511 0.02624 2018 4 16 58224 0.0144 0.4526 0.02435 2018 4 17 58225 0.0158 0.4542 0.02248 2018 4 18 58226 0.0171 0.4557 0.02070 2018 4 19 58227 0.0186 0.4572 0.01900 2018 4 20 58228 0.0200 0.4587 0.01740 2018 4 21 58229 0.0214 0.4601 0.01592 2018 4 22 58230 0.0229 0.4616 0.01454 2018 4 23 58231 0.0244 0.4630 0.01314 2018 4 24 58232 0.0260 0.4644 0.01161 2018 4 25 58233 0.0275 0.4657 0.00995 2018 4 26 58234 0.0291 0.4671 0.00815 2018 4 27 58235 0.0307 0.4684 0.00628 2018 4 28 58236 0.0324 0.4697 0.00441 2018 4 29 58237 0.0340 0.4710 0.00261 2018 4 30 58238 0.0357 0.4723 0.00090 2018 5 1 58239 0.0374 0.4735 -0.00071 2018 5 2 58240 0.0391 0.4747 -0.00220 2018 5 3 58241 0.0408 0.4759 -0.00354 2018 5 4 58242 0.0426 0.4770 -0.00481 2018 5 5 58243 0.0444 0.4782 -0.00601 2018 5 6 58244 0.0462 0.4793 -0.00717 2018 5 7 58245 0.0480 0.4804 -0.00831 2018 5 8 58246 0.0498 0.4814 -0.00947 2018 5 9 58247 0.0517 0.4825 -0.01073 2018 5 10 58248 0.0535 0.4835 -0.01210 2018 5 11 58249 0.0554 0.4845 -0.01360 2018 5 12 58250 0.0573 0.4854 -0.01519 2018 5 13 58251 0.0592 0.4863 -0.01681 2018 5 14 58252 0.0612 0.4872 -0.01840 2018 5 15 58253 0.0631 0.4881 -0.01990 2018 5 16 58254 0.0651 0.4889 -0.02123 2018 5 17 58255 0.0671 0.4898 -0.02237 2018 5 18 58256 0.0690 0.4905 -0.02334 2018 5 19 58257 0.0710 0.4913 -0.02422 2018 5 20 58258 0.0730 0.4920 -0.02509 2018 5 21 58259 0.0751 0.4927 -0.02610 2018 5 22 58260 0.0771 0.4934 -0.02727 2018 5 23 58261 0.0792 0.4940 -0.02858 2018 5 24 58262 0.0812 0.4947 -0.03000 2018 5 25 58263 0.0833 0.4952 -0.03145 2018 5 26 58264 0.0853 0.4958 -0.03286 2018 5 27 58265 0.0874 0.4963 -0.03417 2018 5 28 58266 0.0895 0.4968 -0.03536 2018 5 29 58267 0.0916 0.4973 -0.03641 2018 5 30 58268 0.0937 0.4977 -0.03730 2018 5 31 58269 0.0958 0.4981 -0.03800 2018 6 1 58270 0.0979 0.4985 -0.03855 2018 6 2 58271 0.1000 0.4988 -0.03903 2018 6 3 58272 0.1022 0.4991 -0.03949 2018 6 4 58273 0.1043 0.4994 -0.03997 2018 6 5 58274 0.1064 0.4996 -0.04050 2018 6 6 58275 0.1085 0.4999 -0.04114 2018 6 7 58276 0.1107 0.5001 -0.04187 2018 6 8 58277 0.1128 0.5002 -0.04266 2018 6 9 58278 0.1149 0.5003 -0.04349 2018 6 10 58279 0.1171 0.5004 -0.04438 2018 6 11 58280 0.1192 0.5005 -0.04529 2018 6 12 58281 0.1213 0.5005 -0.04612 2018 6 13 58282 0.1235 0.5005 -0.04687 2018 6 14 58283 0.1256 0.5005 -0.04753 2018 6 15 58284 0.1277 0.5004 -0.04808 2018 6 16 58285 0.1298 0.5003 -0.04858 2018 6 17 58286 0.1319 0.5002 -0.04917 2018 6 18 58287 0.1340 0.5000 -0.04986 2018 6 19 58288 0.1362 0.4999 -0.05065 2018 6 20 58289 0.1383 0.4996 -0.05152 2018 6 21 58290 0.1403 0.4994 -0.05241 2018 6 22 58291 0.1424 0.4991 -0.05323 2018 6 23 58292 0.1445 0.4988 -0.05391 2018 6 24 58293 0.1466 0.4985 -0.05444 2018 6 25 58294 0.1486 0.4981 -0.05481 2018 6 26 58295 0.1507 0.4977 -0.05500 2018 6 27 58296 0.1527 0.4973 -0.05501 2018 6 28 58297 0.1548 0.4968 -0.05492 2018 6 29 58298 0.1568 0.4963 -0.05478 2018 6 30 58299 0.1588 0.4958 -0.05465 2018 7 1 58300 0.1608 0.4952 -0.05456 2018 7 2 58301 0.1628 0.4947 -0.05454 2018 7 3 58302 0.1648 0.4940 -0.05462 2018 7 4 58303 0.1667 0.4934 -0.05484 2018 7 5 58304 0.1687 0.4927 -0.05522 2018 7 6 58305 0.1706 0.4920 -0.05573 2018 7 7 58306 0.1725 0.4913 -0.05634 2018 7 8 58307 0.1744 0.4906 -0.05692 2018 7 9 58308 0.1763 0.4898 -0.05744 2018 7 10 58309 0.1782 0.4890 -0.05791 2018 7 11 58310 0.1800 0.4881 -0.05826 2018 7 12 58311 0.1818 0.4873 -0.05850 2018 7 13 58312 0.1837 0.4864 -0.05870 2018 7 14 58313 0.1855 0.4855 -0.05893 2018 7 15 58314 0.1872 0.4845 -0.05926 2018 7 16 58315 0.1890 0.4835 -0.05971 2018 7 17 58316 0.1907 0.4825 -0.06023 2018 7 18 58317 0.1924 0.4815 -0.06075 2018 7 19 58318 0.1941 0.4805 -0.06122 2018 7 20 58319 0.1958 0.4794 -0.06163 2018 7 21 58320 0.1975 0.4783 -0.06193 2018 7 22 58321 0.1991 0.4772 -0.06209 2018 7 23 58322 0.2007 0.4760 -0.06207 2018 7 24 58323 0.2023 0.4749 -0.06203 2018 7 25 58324 0.2038 0.4737 -0.06195 2018 7 26 58325 0.2054 0.4724 -0.06184 2018 7 27 58326 0.2069 0.4712 -0.06171 2018 7 28 58327 0.2084 0.4699 -0.06168 2018 7 29 58328 0.2098 0.4686 -0.06174 2018 7 30 58329 0.2112 0.4673 -0.06191 2018 7 31 58330 0.2126 0.4660 -0.06220 2018 8 1 58331 0.2140 0.4647 -0.06260 2018 8 2 58332 0.2154 0.4633 -0.06305 2018 8 3 58333 0.2167 0.4619 -0.06353 2018 8 4 58334 0.2180 0.4605 -0.06403 2018 8 5 58335 0.2193 0.4590 -0.06453 2018 8 6 58336 0.2205 0.4576 -0.06500 2018 8 7 58337 0.2217 0.4561 -0.06538 2018 8 8 58338 0.2229 0.4546 -0.06572 2018 8 9 58339 0.2241 0.4531 -0.06609 2018 8 10 58340 0.2252 0.4516 -0.06654 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) 57954 -107.84 0.30 -12.32 0.03 57955 -108.14 0.30 -12.56 0.03 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57954 0.128 0.119 0.202 0.030 57955 0.118 0.119 0.228 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).