********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 20 July 2017 Vol. XXX No. 029 ______________________________________________________________________ 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 7 14 57948 0.18926 .00009 0.43939 .00009 0.355764 0.000010 17 7 15 57949 0.19104 .00009 0.43812 .00009 0.355125 0.000013 17 7 16 57950 0.19236 .00009 0.43666 .00009 0.354505 0.000015 17 7 17 57951 0.19353 .00009 0.43514 .00009 0.353925 0.000017 17 7 18 57952 0.19471 .00009 0.43374 .00009 0.353381 0.000018 17 7 19 57953 0.19588 .00009 0.43231 .00009 0.352897 0.000019 17 7 20 57954 0.19702 .00009 0.43071 .00009 0.352496 0.000021 _______________________________________________________________________ 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 = 0.1200 + 0.1022 cos A + 0.0898 sin A - 0.0314 cos C - 0.0144 sin C y = 0.3577 + 0.0862 cos A - 0.0868 sin A - 0.0144 cos C + 0.0314 sin C UT1-UTC = 0.3428 - 0.00113 (MJD - 57962) - (UT2-UT1) where A = 2*pi*(MJD-57954)/365.25 and C = 2*pi*(MJD-57954)/435. TAI-UTC(MJD 57955) = 37.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-57954)**0.80 S t = 0.00025 (MJD-57954)**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 7 21 57955 0.1983 0.4291 0.35211 2017 7 22 57956 0.1994 0.4275 0.35174 2017 7 23 57957 0.2006 0.4260 0.35139 2017 7 24 57958 0.2018 0.4246 0.35099 2017 7 25 57959 0.2030 0.4232 0.35052 2017 7 26 57960 0.2042 0.4219 0.34995 2017 7 27 57961 0.2054 0.4205 0.34932 2017 7 28 57962 0.2065 0.4192 0.34868 2017 7 29 57963 0.2074 0.4178 0.34808 2017 7 30 57964 0.2084 0.4165 0.34757 2017 7 31 57965 0.2093 0.4151 0.34714 2017 8 1 57966 0.2102 0.4137 0.34682 2017 8 2 57967 0.2111 0.4122 0.34663 2017 8 3 57968 0.2119 0.4108 0.34656 2017 8 4 57969 0.2127 0.4093 0.34654 2017 8 5 57970 0.2134 0.4078 0.34650 2017 8 6 57971 0.2141 0.4064 0.34641 2017 8 7 57972 0.2148 0.4049 0.34623 2017 8 8 57973 0.2154 0.4034 0.34593 2017 8 9 57974 0.2160 0.4018 0.34550 2017 8 10 57975 0.2165 0.4003 0.34493 2017 8 11 57976 0.2170 0.3987 0.34422 2017 8 12 57977 0.2176 0.3972 0.34342 2017 8 13 57978 0.2180 0.3956 0.34258 2017 8 14 57979 0.2185 0.3941 0.34176 2017 8 15 57980 0.2189 0.3925 0.34100 2017 8 16 57981 0.2193 0.3909 0.34035 2017 8 17 57982 0.2197 0.3893 0.33980 2017 8 18 57983 0.2200 0.3878 0.33931 2017 8 19 57984 0.2203 0.3862 0.33884 2017 8 20 57985 0.2205 0.3846 0.33831 2017 8 21 57986 0.2208 0.3830 0.33766 2017 8 22 57987 0.2209 0.3814 0.33689 2017 8 23 57988 0.2211 0.3798 0.33599 2017 8 24 57989 0.2212 0.3781 0.33503 2017 8 25 57990 0.2213 0.3765 0.33405 2017 8 26 57991 0.2214 0.3749 0.33310 2017 8 27 57992 0.2214 0.3733 0.33222 2017 8 28 57993 0.2214 0.3717 0.33144 2017 8 29 57994 0.2214 0.3700 0.33076 2017 8 30 57995 0.2213 0.3684 0.33016 2017 8 31 57996 0.2212 0.3668 0.32963 2017 9 1 57997 0.2211 0.3651 0.32912 2017 9 2 57998 0.2209 0.3635 0.32858 2017 9 3 57999 0.2207 0.3619 0.32798 2017 9 4 58000 0.2205 0.3602 0.32726 2017 9 5 58001 0.2203 0.3586 0.32640 2017 9 6 58002 0.2200 0.3570 0.32537 2017 9 7 58003 0.2197 0.3554 0.32418 2017 9 8 58004 0.2193 0.3538 0.32286 2017 9 9 58005 0.2189 0.3521 0.32147 2017 9 10 58006 0.2185 0.3505 0.32009 2017 9 11 58007 0.2181 0.3489 0.31877 2017 9 12 58008 0.2176 0.3473 0.31755 2017 9 13 58009 0.2171 0.3457 0.31644 2017 9 14 58010 0.2165 0.3441 0.31540 2017 9 15 58011 0.2160 0.3425 0.31439 2017 9 16 58012 0.2154 0.3410 0.31333 2017 9 17 58013 0.2147 0.3394 0.31219 2017 9 18 58014 0.2141 0.3378 0.31092 2017 9 19 58015 0.2134 0.3363 0.30954 2017 9 20 58016 0.2127 0.3347 0.30807 2017 9 21 58017 0.2119 0.3332 0.30659 2017 9 22 58018 0.2111 0.3317 0.30513 2017 9 23 58019 0.2103 0.3301 0.30376 2017 9 24 58020 0.2095 0.3286 0.30249 2017 9 25 58021 0.2086 0.3271 0.30135 2017 9 26 58022 0.2077 0.3257 0.30031 2017 9 27 58023 0.2068 0.3242 0.29936 2017 9 28 58024 0.2058 0.3227 0.29846 2017 9 29 58025 0.2048 0.3213 0.29757 2017 9 30 58026 0.2038 0.3198 0.29664 2017 10 1 58027 0.2028 0.3184 0.29563 2017 10 2 58028 0.2017 0.3170 0.29448 2017 10 3 58029 0.2006 0.3156 0.29319 2017 10 4 58030 0.1995 0.3142 0.29172 2017 10 5 58031 0.1984 0.3129 0.29010 2017 10 6 58032 0.1972 0.3115 0.28838 2017 10 7 58033 0.1960 0.3102 0.28663 2017 10 8 58034 0.1948 0.3089 0.28494 2017 10 9 58035 0.1935 0.3076 0.28336 2017 10 10 58036 0.1922 0.3063 0.28192 2017 10 11 58037 0.1909 0.3050 0.28060 2017 10 12 58038 0.1896 0.3038 0.27936 2017 10 13 58039 0.1883 0.3026 0.27812 2017 10 14 58040 0.1869 0.3014 0.27683 2017 10 15 58041 0.1855 0.3002 0.27545 2017 10 16 58042 0.1841 0.2990 0.27397 2017 10 17 58043 0.1826 0.2979 0.27239 2017 10 18 58044 0.1812 0.2967 0.27076 2017 10 19 58045 0.1797 0.2956 0.26914 2017 10 20 58046 0.1782 0.2945 0.26757 2017 10 21 58047 0.1767 0.2935 0.26610 2017 10 22 58048 0.1751 0.2924 0.26474 2017 10 23 58049 0.1735 0.2914 0.26350 2017 10 24 58050 0.1720 0.2904 0.26236 2017 10 25 58051 0.1704 0.2894 0.26130 2017 10 26 58052 0.1687 0.2885 0.26028 2017 10 27 58053 0.1671 0.2876 0.25924 2017 10 28 58054 0.1654 0.2867 0.25815 2017 10 29 58055 0.1637 0.2858 0.25695 2017 10 30 58056 0.1620 0.2849 0.25561 2017 10 31 58057 0.1603 0.2841 0.25412 2017 11 1 58058 0.1586 0.2833 0.25247 2017 11 2 58059 0.1569 0.2825 0.25068 2017 11 3 58060 0.1551 0.2817 0.24881 2017 11 4 58061 0.1533 0.2810 0.24696 2017 11 5 58062 0.1516 0.2803 0.24519 2017 11 6 58063 0.1498 0.2796 0.24350 2017 11 7 58064 0.1479 0.2790 0.24197 2017 11 8 58065 0.1461 0.2783 0.24054 2017 11 9 58066 0.1443 0.2777 0.23915 2017 11 10 58067 0.1424 0.2772 0.23774 2017 11 11 58068 0.1406 0.2766 0.23627 2017 11 12 58069 0.1387 0.2761 0.23471 2017 11 13 58070 0.1368 0.2756 0.23309 2017 11 14 58071 0.1349 0.2752 0.23143 2017 11 15 58072 0.1330 0.2747 0.22977 2017 11 16 58073 0.1311 0.2743 0.22818 2017 11 17 58074 0.1292 0.2739 0.22667 2017 11 18 58075 0.1273 0.2736 0.22528 2017 11 19 58076 0.1254 0.2733 0.22401 2017 11 20 58077 0.1234 0.2730 0.22286 2017 11 21 58078 0.1215 0.2727 0.22181 2017 11 22 58079 0.1195 0.2725 0.22082 2017 11 23 58080 0.1176 0.2723 0.21984 2017 11 24 58081 0.1156 0.2721 0.21884 2017 11 25 58082 0.1137 0.2719 0.21777 2017 11 26 58083 0.1117 0.2718 0.21659 2017 11 27 58084 0.1097 0.2717 0.21527 2017 11 28 58085 0.1078 0.2717 0.21381 2017 11 29 58086 0.1058 0.2716 0.21221 2017 11 30 58087 0.1038 0.2716 0.21052 2017 12 1 58088 0.1019 0.2717 0.20878 2017 12 2 58089 0.0999 0.2717 0.20709 2017 12 3 58090 0.0979 0.2718 0.20550 2017 12 4 58091 0.0960 0.2719 0.20405 2017 12 5 58092 0.0940 0.2721 0.20273 2017 12 6 58093 0.0920 0.2722 0.20147 2017 12 7 58094 0.0901 0.2724 0.20022 2017 12 8 58095 0.0881 0.2727 0.19891 2017 12 9 58096 0.0862 0.2729 0.19753 2017 12 10 58097 0.0842 0.2732 0.19608 2017 12 11 58098 0.0823 0.2736 0.19460 2017 12 12 58099 0.0804 0.2739 0.19313 2017 12 13 58100 0.0784 0.2743 0.19172 2017 12 14 58101 0.0765 0.2747 0.19039 2017 12 15 58102 0.0746 0.2751 0.18918 2017 12 16 58103 0.0727 0.2756 0.18810 2017 12 17 58104 0.0708 0.2761 0.18713 2017 12 18 58105 0.0689 0.2766 0.18626 2017 12 19 58106 0.0671 0.2772 0.18546 2017 12 20 58107 0.0652 0.2778 0.18469 2017 12 21 58108 0.0633 0.2784 0.18391 2017 12 22 58109 0.0615 0.2790 0.18307 2017 12 23 58110 0.0597 0.2797 0.18214 2017 12 24 58111 0.0579 0.2804 0.18109 2017 12 25 58112 0.0560 0.2811 0.17990 2017 12 26 58113 0.0543 0.2819 0.17859 2017 12 27 58114 0.0525 0.2827 0.17718 2017 12 28 58115 0.0507 0.2835 0.17570 2017 12 29 58116 0.0490 0.2843 0.17422 2017 12 30 58117 0.0472 0.2852 0.17281 2017 12 31 58118 0.0455 0.2861 0.17149 2018 1 1 58119 0.0438 0.2870 0.17030 2018 1 2 58120 0.0421 0.2879 0.16918 2018 1 3 58121 0.0405 0.2889 0.16807 2018 1 4 58122 0.0388 0.2899 0.16691 2018 1 5 58123 0.0372 0.2909 0.16565 2018 1 6 58124 0.0356 0.2920 0.16430 2018 1 7 58125 0.0340 0.2930 0.16290 2018 1 8 58126 0.0324 0.2941 0.16149 2018 1 9 58127 0.0309 0.2953 0.16014 2018 1 10 58128 0.0294 0.2964 0.15888 2018 1 11 58129 0.0279 0.2976 0.15774 2018 1 12 58130 0.0264 0.2988 0.15673 2018 1 13 58131 0.0249 0.3000 0.15585 2018 1 14 58132 0.0235 0.3012 0.15508 2018 1 15 58133 0.0221 0.3025 0.15438 2018 1 16 58134 0.0207 0.3038 0.15373 2018 1 17 58135 0.0193 0.3051 0.15309 2018 1 18 58136 0.0180 0.3064 0.15241 2018 1 19 58137 0.0166 0.3078 0.15165 2018 1 20 58138 0.0154 0.3091 0.15080 2018 1 21 58139 0.0141 0.3105 0.14984 2018 1 22 58140 0.0128 0.3119 0.14878 2018 1 23 58141 0.0116 0.3134 0.14765 2018 1 24 58142 0.0104 0.3148 0.14648 2018 1 25 58143 0.0093 0.3163 0.14532 2018 1 26 58144 0.0082 0.3178 0.14420 2018 1 27 58145 0.0070 0.3193 0.14316 2018 1 28 58146 0.0060 0.3208 0.14221 2018 1 29 58147 0.0049 0.3224 0.14129 2018 1 30 58148 0.0039 0.3239 0.14036 2018 1 31 58149 0.0029 0.3255 0.13933 2018 2 1 58150 0.0020 0.3271 0.13815 2018 2 2 58151 0.0010 0.3287 0.13681 2018 2 3 58152 0.0001 0.3304 0.13534 2018 2 4 58153 -0.0008 0.3320 0.13381 2018 2 5 58154 -0.0016 0.3337 0.13230 2018 2 6 58155 -0.0024 0.3353 0.13085 2018 2 7 58156 -0.0032 0.3370 0.12951 2018 2 8 58157 -0.0039 0.3387 0.12828 2018 2 9 58158 -0.0046 0.3404 0.12716 2018 2 10 58159 -0.0053 0.3421 0.12612 2018 2 11 58160 -0.0060 0.3439 0.12515 2018 2 12 58161 -0.0066 0.3456 0.12420 2018 2 13 58162 -0.0072 0.3474 0.12323 2018 2 14 58163 -0.0077 0.3491 0.12219 2018 2 15 58164 -0.0083 0.3509 0.12106 2018 2 16 58165 -0.0087 0.3527 0.11981 2018 2 17 58166 -0.0092 0.3545 0.11841 2018 2 18 58167 -0.0096 0.3563 0.11687 2018 2 19 58168 -0.0100 0.3581 0.11523 2018 2 20 58169 -0.0104 0.3599 0.11354 2018 2 21 58170 -0.0107 0.3618 0.11183 2018 2 22 58171 -0.0110 0.3636 0.11018 2018 2 23 58172 -0.0112 0.3654 0.10861 2018 2 24 58173 -0.0115 0.3673 0.10713 2018 2 25 58174 -0.0116 0.3691 0.10572 2018 2 26 58175 -0.0118 0.3710 0.10437 2018 2 27 58176 -0.0119 0.3729 0.10298 2018 2 28 58177 -0.0120 0.3747 0.10150 2018 3 1 58178 -0.0120 0.3766 0.09986 2018 3 2 58179 -0.0121 0.3784 0.09808 2018 3 3 58180 -0.0120 0.3803 0.09620 2018 3 4 58181 -0.0120 0.3822 0.09431 2018 3 5 58182 -0.0119 0.3841 0.09248 2018 3 6 58183 -0.0118 0.3859 0.09075 2018 3 7 58184 -0.0116 0.3878 0.08915 2018 3 8 58185 -0.0114 0.3897 0.08764 2018 3 9 58186 -0.0112 0.3915 0.08621 2018 3 10 58187 -0.0109 0.3934 0.08491 2018 3 11 58188 -0.0106 0.3953 0.08372 2018 3 12 58189 -0.0103 0.3971 0.08256 2018 3 13 58190 -0.0099 0.3990 0.08132 2018 3 14 58191 -0.0095 0.4009 0.07997 2018 3 15 58192 -0.0091 0.4027 0.07849 2018 3 16 58193 -0.0086 0.4046 0.07686 2018 3 17 58194 -0.0081 0.4064 0.07509 2018 3 18 58195 -0.0076 0.4082 0.07320 2018 3 19 58196 -0.0070 0.4101 0.07121 2018 3 20 58197 -0.0064 0.4119 0.06914 2018 3 21 58198 -0.0058 0.4137 0.06707 2018 3 22 58199 -0.0051 0.4155 0.06508 2018 3 23 58200 -0.0044 0.4173 0.06316 2018 3 24 58201 -0.0037 0.4191 0.06133 2018 3 25 58202 -0.0029 0.4209 0.05957 2018 3 26 58203 -0.0021 0.4227 0.05786 2018 3 27 58204 -0.0013 0.4244 0.05611 2018 3 28 58205 -0.0004 0.4262 0.05425 2018 3 29 58206 0.0005 0.4279 0.05226 2018 3 30 58207 0.0014 0.4296 0.05014 2018 3 31 58208 0.0024 0.4313 0.04798 2018 4 1 58209 0.0034 0.4330 0.04587 2018 4 2 58210 0.0044 0.4347 0.04388 2018 4 3 58211 0.0054 0.4364 0.04204 2018 4 4 58212 0.0065 0.4381 0.04042 2018 4 5 58213 0.0076 0.4397 0.03897 2018 4 6 58214 0.0088 0.4413 0.03769 2018 4 7 58215 0.0099 0.4430 0.03652 2018 4 8 58216 0.0111 0.4446 0.03538 2018 4 9 58217 0.0124 0.4461 0.03418 2018 4 10 58218 0.0136 0.4477 0.03285 2018 4 11 58219 0.0149 0.4492 0.03138 2018 4 12 58220 0.0162 0.4508 0.02974 2018 4 13 58221 0.0176 0.4523 0.02793 2018 4 14 58222 0.0189 0.4538 0.02598 2018 4 15 58223 0.0203 0.4552 0.02392 2018 4 16 58224 0.0217 0.4567 0.02179 2018 4 17 58225 0.0232 0.4581 0.01967 2018 4 18 58226 0.0247 0.4595 0.01763 2018 4 19 58227 0.0262 0.4609 0.01579 2018 4 20 58228 0.0277 0.4623 0.01414 2018 4 21 58229 0.0292 0.4637 0.01262 2018 4 22 58230 0.0308 0.4650 0.01115 2018 4 23 58231 0.0324 0.4663 0.00968 2018 4 24 58232 0.0340 0.4676 0.00815 2018 4 25 58233 0.0357 0.4688 0.00652 2018 4 26 58234 0.0373 0.4701 0.00480 2018 4 27 58235 0.0390 0.4713 0.00307 2018 4 28 58236 0.0407 0.4725 0.00136 2018 4 29 58237 0.0424 0.4736 -0.00029 2018 4 30 58238 0.0442 0.4748 -0.00186 2018 5 1 58239 0.0460 0.4759 -0.00329 2018 5 2 58240 0.0477 0.4769 -0.00462 2018 5 3 58241 0.0495 0.4780 -0.00584 2018 5 4 58242 0.0514 0.4790 -0.00691 2018 5 5 58243 0.0532 0.4800 -0.00789 2018 5 6 58244 0.0551 0.4810 -0.00888 2018 5 7 58245 0.0569 0.4820 -0.00989 2018 5 8 58246 0.0588 0.4829 -0.01096 2018 5 9 58247 0.0607 0.4838 -0.01214 2018 5 10 58248 0.0627 0.4847 -0.01345 2018 5 11 58249 0.0646 0.4855 -0.01486 2018 5 12 58250 0.0666 0.4863 -0.01636 2018 5 13 58251 0.0685 0.4871 -0.01790 2018 5 14 58252 0.0705 0.4879 -0.01945 2018 5 15 58253 0.0725 0.4886 -0.02090 2018 5 16 58254 0.0745 0.4893 -0.02219 2018 5 17 58255 0.0765 0.4900 -0.02332 2018 5 18 58256 0.0785 0.4906 -0.02432 2018 5 19 58257 0.0806 0.4912 -0.02526 2018 5 20 58258 0.0826 0.4918 -0.02621 2018 5 21 58259 0.0847 0.4923 -0.02720 2018 5 22 58260 0.0868 0.4929 -0.02827 2018 5 23 58261 0.0888 0.4934 -0.02946 2018 5 24 58262 0.0909 0.4938 -0.03076 2018 5 25 58263 0.0930 0.4942 -0.03210 2018 5 26 58264 0.0951 0.4946 -0.03341 2018 5 27 58265 0.0972 0.4950 -0.03459 2018 5 28 58266 0.0993 0.4953 -0.03559 2018 5 29 58267 0.1014 0.4956 -0.03647 2018 5 30 58268 0.1035 0.4959 -0.03719 2018 5 31 58269 0.1056 0.4961 -0.03776 2018 6 1 58270 0.1078 0.4963 -0.03823 2018 6 2 58271 0.1099 0.4965 -0.03862 2018 6 3 58272 0.1120 0.4967 -0.03899 2018 6 4 58273 0.1141 0.4968 -0.03940 2018 6 5 58274 0.1163 0.4969 -0.03983 2018 6 6 58275 0.1184 0.4969 -0.04033 2018 6 7 58276 0.1205 0.4969 -0.04092 2018 6 8 58277 0.1226 0.4969 -0.04165 2018 6 9 58278 0.1248 0.4969 -0.04249 2018 6 10 58279 0.1269 0.4968 -0.04338 2018 6 11 58280 0.1290 0.4967 -0.04423 2018 6 12 58281 0.1311 0.4965 -0.04508 2018 6 13 58282 0.1332 0.4963 -0.04587 2018 6 14 58283 0.1353 0.4961 -0.04653 2018 6 15 58284 0.1374 0.4959 -0.04710 2018 6 16 58285 0.1395 0.4956 -0.04769 2018 6 17 58286 0.1416 0.4953 -0.04834 2018 6 18 58287 0.1437 0.4950 -0.04908 2018 6 19 58288 0.1457 0.4946 -0.04993 2018 6 20 58289 0.1478 0.4942 -0.05081 2018 6 21 58290 0.1499 0.4938 -0.05167 2018 6 22 58291 0.1519 0.4933 -0.05242 2018 6 23 58292 0.1539 0.4929 -0.05306 2018 6 24 58293 0.1560 0.4923 -0.05358 2018 6 25 58294 0.1580 0.4918 -0.05396 2018 6 26 58295 0.1600 0.4912 -0.05419 2018 6 27 58296 0.1620 0.4906 -0.05433 2018 6 28 58297 0.1639 0.4899 -0.05443 2018 6 29 58298 0.1659 0.4893 -0.05451 2018 6 30 58299 0.1678 0.4886 -0.05459 2018 7 1 58300 0.1698 0.4878 -0.05466 2018 7 2 58301 0.1717 0.4871 -0.05480 2018 7 3 58302 0.1736 0.4863 -0.05501 2018 7 4 58303 0.1755 0.4855 -0.05533 2018 7 5 58304 0.1774 0.4846 -0.05578 2018 7 6 58305 0.1792 0.4837 -0.05635 2018 7 7 58306 0.1810 0.4828 -0.05698 2018 7 8 58307 0.1829 0.4819 -0.05761 2018 7 9 58308 0.1847 0.4809 -0.05821 2018 7 10 58309 0.1864 0.4799 -0.05872 2018 7 11 58310 0.1882 0.4789 -0.05910 2018 7 12 58311 0.1899 0.4779 -0.05942 2018 7 13 58312 0.1916 0.4768 -0.05977 2018 7 14 58313 0.1933 0.4757 -0.06024 2018 7 15 58314 0.1950 0.4746 -0.06085 2018 7 16 58315 0.1967 0.4734 -0.06163 2018 7 17 58316 0.1983 0.4722 -0.06249 2018 7 18 58317 0.1999 0.4710 -0.06338 2018 7 19 58318 0.2015 0.4698 -0.06423 2018 7 20 58319 0.2030 0.4686 -0.06498 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) 57932 -103.21 0.30 -12.52 0.01 57933 -103.67 0.30 -12.52 0.01 57934 -104.28 0.30 -12.43 0.01 57935 -104.57 0.30 -12.37 0.02 57936 -104.47 0.30 -12.44 0.03 57937 -104.36 0.30 -12.52 0.03 57938 -104.59 0.30 -12.50 0.04 57939 -105.03 0.30 -12.41 0.03 57940 -105.36 0.30 -12.36 0.03 57941 -105.48 0.30 -12.38 0.03 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 57932 0.007 0.119 0.150 0.010 57933 0.030 0.119 0.177 0.010 57934 0.040 0.119 0.187 0.010 57935 0.040 0.119 0.190 0.020 57936 0.041 0.119 0.157 0.030 57937 0.040 0.119 0.130 0.030 57938 0.025 0.119 0.123 0.040 57939 0.016 0.119 0.120 0.030 57940 0.029 0.119 0.111 0.030 57941 0.046 0.119 0.114 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).