EPOXI/EPOCh - Geometry for Moon during the 28-29 May 2008 Earth Equatorial Observation #4 The EPOCh team provided the following observational geometry values for the Moon as it transited during the 28-29 May 2008 Earth Equatorial Observation. The EPOCh team used the HORIZONS system maintained by the JPL Solar System group to generate a raw look-up table of observational geometry parameters (see the second table below). To aid analysis, the EPOCh team constructed reduced values in the first table below by interpolating the raw look-up table from HORIZONS. Table 1 - Reduced observational geometry parameters constructed by interpolating values in the raw look-up table (Table 2). Date & Time Julian CML Lat Range Helio S-O-SC Illum% ----------------------- -------------- ----- ----- ------- ------- ------ ------- 2008-05-28T20:03:52.662 2454615.336026 181.4 3.4 0.32825 1.01320 75.081 62.873 2008-05-28T20:18:53.746 2454615.346455 181.6 3.4 0.32826 1.01320 75.084 62.870 2008-05-28T20:33:47.388 2454615.356798 181.7 3.4 0.32827 1.01319 75.087 62.867 2008-05-28T20:48:53.773 2454615.367289 181.8 3.4 0.32828 1.01319 75.091 62.864 2008-05-28T21:03:51.444 2454615.377679 182.0 3.4 0.32829 1.01319 75.094 62.861 2008-05-28T21:18:53.706 2454615.388122 182.1 3.4 0.32831 1.01318 75.097 62.859 2008-05-28T21:33:47.263 2454615.398464 182.2 3.4 0.32832 1.01318 75.100 62.856 2008-05-28T21:48:53.734 2454615.408955 182.4 3.4 0.32833 1.01317 75.104 62.853 2008-05-28T22:03:51.405 2454615.419345 182.5 3.4 0.32834 1.01317 75.107 62.850 2008-05-28T22:18:53.663 2454615.429788 182.6 3.4 0.32835 1.01317 75.110 62.848 2008-05-28T22:33:47.177 2454615.440129 182.7 3.4 0.32836 1.01316 75.113 62.845 2008-05-28T22:48:53.691 2454615.450621 182.9 3.4 0.32837 1.01316 75.117 62.842 2008-05-28T23:03:51.377 2454615.461011 183.0 3.4 0.32838 1.01316 75.120 62.839 2008-05-28T23:18:53.624 2454615.471454 183.1 3.4 0.32839 1.01315 75.123 62.837 2008-05-28T23:33:47.142 2454615.481796 183.3 3.4 0.32840 1.01315 75.127 62.834 2008-05-28T23:48:53.566 2454615.492287 183.4 3.4 0.32842 1.01314 75.130 62.831 2008-05-29T00:03:51.318 2454615.502677 183.5 3.4 0.32843 1.01314 75.133 62.828 2008-05-29T00:18:53.593 2454615.513120 183.7 3.4 0.32844 1.01314 75.136 62.826 2008-05-29T00:33:47.103 2454615.523462 183.8 3.4 0.32845 1.01313 75.140 62.823 2008-05-29T00:48:53.515 2454615.533953 183.9 3.4 0.32846 1.01313 75.143 62.820 2008-05-29T01:03:51.221 2454615.544343 184.1 3.4 0.32847 1.01313 75.146 62.817 2008-05-29T01:18:53.542 2454615.554786 184.2 3.4 0.32848 1.01312 75.149 62.815 2008-05-29T01:33:47.032 2454615.565128 184.3 3.4 0.32849 1.01312 75.153 62.812 2008-05-29T01:48:53.476 2454615.575619 184.4 3.4 0.32850 1.01311 75.156 62.809 2008-05-29T02:03:51.182 2454615.586009 184.6 3.4 0.32852 1.01311 75.159 62.806 2008-05-29T02:18:53.503 2454615.596453 184.7 3.4 0.32853 1.01311 75.162 62.804 2008-05-29T02:33:46.993 2454615.606794 184.8 3.4 0.32854 1.01310 75.166 62.801 2008-05-29T02:48:53.386 2454615.617285 185.0 3.4 0.32855 1.01310 75.169 62.798 2008-05-29T03:03:51.139 2454615.627675 185.1 3.4 0.32856 1.01310 75.172 62.795 2008-05-29T03:18:53.319 2454615.638117 185.2 3.4 0.32857 1.01309 75.176 62.793 2008-05-29T03:33:46.950 2454615.648460 185.4 3.4 0.32858 1.01309 75.179 62.790 2008-05-29T03:48:53.347 2454615.658951 185.5 3.4 0.32859 1.01308 75.182 62.787 2008-05-29T04:03:51.100 2454615.669341 185.6 3.4 0.32860 1.01308 75.185 62.784 2008-05-29T04:18:53.280 2454615.679783 185.8 3.4 0.32862 1.01308 75.189 62.782 2008-05-29T04:33:46.919 2454615.690126 185.9 3.4 0.32863 1.01307 75.192 62.779 2008-05-29T04:48:53.308 2454615.700617 186.0 3.4 0.32864 1.01307 75.195 62.776 2008-05-29T05:03:50.986 2454615.711007 186.1 3.4 0.32865 1.01307 75.198 62.773 2008-05-29T05:18:53.237 2454615.721449 186.3 3.4 0.32866 1.01306 75.202 62.771 2008-05-29T05:33:46.817 2454615.731792 186.4 3.4 0.32867 1.01306 75.205 62.768 2008-05-29T05:48:53.265 2454615.742283 186.5 3.4 0.32868 1.01305 75.208 62.765 2008-05-29T06:03:50.947 2454615.752673 186.7 3.4 0.32869 1.01305 75.211 62.762 2008-05-29T06:18:53.198 2454615.763116 186.8 3.4 0.32871 1.01305 75.215 62.760 2008-05-29T06:33:46.759 2454615.773458 186.9 3.4 0.32872 1.01304 75.218 62.757 2008-05-29T06:48:53.226 2454615.783949 187.1 3.4 0.32873 1.01304 75.221 62.754 2008-05-29T07:03:50.892 2454615.794339 187.2 3.3 0.32874 1.01304 75.224 62.751 2008-05-29T07:18:53.159 2454615.804782 187.3 3.3 0.32875 1.01303 75.228 62.749 2008-05-29T07:33:46.677 2454615.815124 187.4 3.3 0.32876 1.01303 75.231 62.746 2008-05-29T07:48:53.089 2454615.825614 187.6 3.3 0.32877 1.01303 75.234 62.743 2008-05-29T08:03:50.857 2454615.836005 187.7 3.3 0.32878 1.01302 75.237 62.740 2008-05-29T08:18:53.116 2454615.846448 187.8 3.3 0.32880 1.01302 75.241 62.738 2008-05-29T08:33:46.606 2454615.856789 188.0 3.3 0.32881 1.01301 75.244 62.735 2008-05-29T08:48:53.057 2454615.867281 188.1 3.3 0.32882 1.01301 75.247 62.732 2008-05-29T09:03:50.752 2454615.877671 188.2 3.3 0.32883 1.01301 75.250 62.729 2008-05-29T09:18:53.085 2454615.888114 188.4 3.3 0.32884 1.01300 75.254 62.727 2008-05-29T09:33:46.567 2454615.898456 188.5 3.3 0.32885 1.01300 75.257 62.724 2008-05-29T09:48:53.007 2454615.908947 188.6 3.3 0.32886 1.01300 75.260 62.721 2008-05-29T10:03:50.720 2454615.919337 188.8 3.3 0.32888 1.01299 75.263 62.718 2008-05-29T10:18:53.034 2454615.929781 188.9 3.3 0.32889 1.01299 75.267 62.716 2008-05-29T10:33:46.524 2454615.940122 189.0 3.3 0.32890 1.01298 75.270 62.713 2008-05-29T10:48:52.968 2454615.950613 189.1 3.3 0.32891 1.01298 75.273 62.711 2008-05-29T11:03:50.673 2454615.961003 189.3 3.3 0.32892 1.01298 75.276 62.708 2008-05-29T11:18:52.854 2454615.971445 189.4 3.3 0.32893 1.01297 75.280 62.706 2008-05-29T11:33:46.485 2454615.981788 189.5 3.3 0.32894 1.01297 75.283 62.703 2008-05-29T11:48:52.878 2454615.992279 189.7 3.3 0.32896 1.01297 75.286 62.700 2008-05-29T12:03:50.630 2454616.002669 189.8 3.3 0.32897 1.01296 75.289 62.697 2008-05-29T12:18:52.811 2454616.013111 189.9 3.3 0.32898 1.01296 75.292 62.695 2008-05-29T12:33:46.383 2454616.023454 190.1 3.3 0.32899 1.01296 75.296 62.692 2008-05-29T12:48:52.839 2454616.033945 190.2 3.3 0.32900 1.01295 75.299 62.689 2008-05-29T13:03:50.505 2454616.044335 190.3 3.3 0.32901 1.01295 75.302 62.686 2008-05-29T13:18:52.772 2454616.054778 190.5 3.3 0.32903 1.01294 75.305 62.684 2008-05-29T13:33:46.344 2454616.065120 190.6 3.3 0.32904 1.01294 75.309 62.681 2008-05-29T13:48:52.799 2454616.075611 190.7 3.3 0.32905 1.01294 75.312 62.678 2008-05-29T14:03:50.482 2454616.086001 190.8 3.3 0.32906 1.01293 75.315 62.675 2008-05-29T14:18:52.729 2454616.096444 191.0 3.3 0.32907 1.01293 75.318 62.673 2008-05-29T14:33:46.293 2454616.106786 191.1 3.3 0.32908 1.01293 75.322 62.670 2008-05-29T14:48:52.756 2454616.117277 191.2 3.3 0.32910 1.01292 75.325 62.667 2008-05-29T15:03:50.423 2454616.127667 191.4 3.3 0.32911 1.01292 75.328 62.664 2008-05-29T15:18:52.690 2454616.138110 191.5 3.3 0.32912 1.01292 75.331 62.662 2008-05-29T15:33:46.254 2454616.148452 191.6 3.3 0.32913 1.01291 75.334 62.659 2008-05-29T15:48:52.620 2454616.158942 191.8 3.3 0.32914 1.01291 75.338 62.656 2008-05-29T16:03:50.384 2454616.169333 191.9 3.3 0.32915 1.01290 75.341 62.653 2008-05-29T16:18:52.647 2454616.179776 192.0 3.3 0.32917 1.01290 75.344 62.651 2008-05-29T16:33:46.137 2454616.190117 192.1 3.3 0.32918 1.01290 75.347 62.648 2008-05-29T16:48:52.580 2454616.200609 192.3 3.3 0.32919 1.01289 75.351 62.645 2008-05-29T17:03:50.333 2454616.210999 192.4 3.3 0.32920 1.01289 75.354 62.642 2008-05-29T17:18:52.608 2454616.221442 192.5 3.3 0.32921 1.01289 75.357 62.640 2008-05-29T17:33:46.098 2454616.231783 192.7 3.3 0.32922 1.01288 75.360 62.637 2008-05-29T17:48:52.549 2454616.242275 192.8 3.3 0.32924 1.01288 75.364 62.634 2008-05-29T18:03:50.243 2454616.252665 192.9 3.3 0.32925 1.01288 75.367 62.631 2008-05-29T18:18:52.576 2454616.263108 193.1 3.2 0.32926 1.01287 75.370 62.629 2008-05-29T18:33:46.059 2454616.273450 193.2 3.2 0.32927 1.01287 75.373 62.626 2008-05-29T18:48:52.498 2454616.283941 193.3 3.2 0.32928 1.01287 75.376 62.623 2008-05-29T19:03:50.204 2454616.294331 193.5 3.2 0.32929 1.01286 75.380 62.620 2008-05-29T19:18:52.432 2454616.304774 193.6 3.2 0.32931 1.01286 75.383 62.618 2008-05-29T19:33:46.016 2454616.315116 193.7 3.2 0.32932 1.01285 75.386 62.615 2008-05-29T19:48:52.459 2454616.325607 193.8 3.2 0.32933 1.01285 75.389 62.613 2008-05-29T20:03:50.165 2454616.335997 194.0 3.2 0.32934 1.01285 75.392 62.610 ----------------------- -------------- ----- ----- ------- ------ ------ ------- Date & Time = UTC date and time at spacecraft at moment of spacecraft measurement of event (i.e., light travel time of event detection is accounted for) Julian = Julian date and time CML = subspacecraft central meridian West longitude of Moon image at moment of image arrival at spacecraft Lat = subspacecraft latitude on Moon Range = range of spacecraft from Moon geocenter Helio = heliocentric range of Moon geocenter from Sun center at moment observed by spacecraft S-O-SC = Sun-object-spacecraft angle, in degrees Illum% = illumination percentage Table 2 - Raw Observational Geometry Look-Up Table from Horizons. JULIAN = dblarr(38) ; Julian date RA = JULIAN ; astrometric right ascension from spacecraft, in degrees DEC = JULIAN ; astrometric declination from spacecraft, in degrees ILLUM_FRAC = JULIAN ; illumination fraction (in percentage) EQ_DIAM = JULIAN ; apparent equatorial diameter, in arcsec SUBSCLON = JULIAN ; subspacecraft *East* longitude, converted to West longitude at the end SUBSCLAT = JULIAN ; subspacecraft latitude SUBSUNLO = JULIAN ; subSun *East* longitude, converted to West longitude at the end SUBSUNLA = JULIAN ; SubSun latitude NPPA = JULIAN ; North Pole Position Angle, ccw positive from Cel. N., in degrees RANGE_HELIO = JULIAN ; heliocentric range, in AU RANGE_TARGET = JULIAN ; geocentric range of spacecraft, in AU PHASE_ANGLE = JULIAN ; phase angle = Sun-object-spacecraft angle, in degrees JULIAN RA DEC ILL_FR EQ_DIAM SUBSCLON SUBSCLAT SUBSUNLO SUBSUNLA NPPA RANGE_HELIO RANGE_TARGET PH_ANG ------------------ --------- -------- ------ -------- --------- -------- --------- -------- -------- -------------- ---------------- ------- 2454614.958333333 172.06996 +0.39040 62.973 14.61300 183.29234 +3.52806 258.31422 +1.48166 +21.8882 1.013339628682 0.32786129440519 74.9615 2454615.000000000 172.09807 +0.38881 62.962 14.61111 182.77009 +3.51909 257.80503 +1.48099 +21.8904 1.013324339061 0.32790364736476 74.9747 2454615.041666667 172.12617 +0.38723 62.951 14.60922 182.24783 +3.51013 257.29583 +1.48032 +21.8925 1.013309055749 0.32794614608673 74.9879 2454615.083333333 172.15426 +0.38565 62.940 14.60732 181.72556 +3.50116 256.78662 +1.47966 +21.8947 1.013293780542 0.32798879119964 75.0010 2454615.125000000 172.18235 +0.38406 62.929 14.60541 181.20329 +3.49221 256.27739 +1.47899 +21.8968 1.013278515242 0.32803158331678 75.0142 2454615.166666667 172.21043 +0.38248 62.918 14.60350 180.68102 +3.48325 255.76815 +1.47832 +21.8989 1.013263261659 0.32807452303599 75.0273 2454615.208333333 172.23851 +0.38090 62.907 14.60158 180.15873 +3.47430 255.25890 +1.47766 +21.9011 1.013248021609 0.32811761093944 75.0405 2454615.250000000 172.26659 +0.37931 62.896 14.59966 179.63645 +3.46535 254.74964 +1.47699 +21.9032 1.013232796915 0.32816084759351 75.0536 2454615.291666667 172.29466 +0.37773 62.885 14.59773 179.11416 +3.45641 254.24037 +1.47633 +21.9053 1.013217589405 0.32820423354847 75.0667 2454615.333333333 172.32272 +0.37614 62.874 14.59579 178.59187 +3.44747 253.73109 +1.47567 +21.9074 1.013202400913 0.32824776933845 75.0799 2454615.375000000 172.35078 +0.37456 62.862 14.59385 178.06957 +3.43853 253.22179 +1.47501 +21.9095 1.013187233281 0.32829145548109 75.0930 2454615.416666667 172.37884 +0.37297 62.851 14.59190 177.54727 +3.42959 252.71248 +1.47434 +21.9116 1.013172088355 0.32833529247743 75.1061 2454615.458333333 172.40690 +0.37139 62.840 14.58995 177.02496 +3.42066 252.20316 +1.47368 +21.9137 1.013156967988 0.32837928081169 75.1192 2454615.500000000 172.43495 +0.36980 62.829 14.58799 176.50266 +3.41173 251.69383 +1.47302 +21.9158 1.013141874038 0.32842342095106 75.1322 2454615.541666667 172.46300 +0.36821 62.818 14.58602 175.98035 +3.40281 251.18449 +1.47237 +21.9179 1.013126808368 0.32846771334555 75.1453 2454615.583333333 172.49105 +0.36662 62.807 14.58405 175.45804 +3.39389 250.67514 +1.47171 +21.9200 1.013111772848 0.32851215842771 75.1584 2454615.625000000 172.51909 +0.36502 62.796 14.58207 174.93573 +3.38497 250.16577 +1.47105 +21.9220 1.013096769351 0.32855675661247 75.1714 2454615.666666667 172.54713 +0.36343 62.785 14.58008 174.41342 +3.37606 249.65639 +1.47039 +21.9241 1.013081799758 0.32860150829697 75.1845 2454615.708333333 172.57518 +0.36183 62.774 14.57809 173.89110 +3.36715 249.14700 +1.46974 +21.9262 1.013066865952 0.32864641386033 75.1975 2454615.750000000 172.60322 +0.36023 62.763 14.57609 173.36879 +3.35824 248.63760 +1.46909 +21.9282 1.013051969823 0.32869147366340 75.2105 2454615.791666667 172.63126 +0.35863 62.752 14.57409 172.84648 +3.34934 248.12819 +1.46843 +21.9303 1.013037113265 0.32873668804866 75.2236 2454615.833333333 172.65930 +0.35703 62.741 14.57208 172.32416 +3.34044 247.61876 +1.46778 +21.9323 1.013022298175 0.32878205733991 75.2366 2454615.875000000 172.68734 +0.35542 62.730 14.57006 171.80185 +3.33155 247.10933 +1.46713 +21.9343 1.013007526458 0.32882758184218 75.2496 2454615.916666667 172.71538 +0.35381 62.719 14.56803 171.27954 +3.32266 246.59988 +1.46648 +21.9364 1.012992800020 0.32887326184141 75.2625 2454615.958333333 172.74342 +0.35219 62.709 14.56600 170.75723 +3.31377 246.09042 +1.46583 +21.9384 1.012978120772 0.32891909760433 75.2755 2454616.000000000 172.77146 +0.35058 62.698 14.56397 170.23492 +3.30489 245.58095 +1.46519 +21.9404 1.012963490628 0.32896508937821 75.2884 2454616.041666667 172.79950 +0.34896 62.687 14.56193 169.71261 +3.29601 245.07146 +1.46454 +21.9424 1.012948911508 0.32901123739070 75.3014 2454616.083333333 172.82754 +0.34733 62.676 14.55988 169.19031 +3.28714 244.56197 +1.46389 +21.9445 1.012934385333 0.32905754184961 75.3143 2454616.125000000 172.85559 +0.34570 62.665 14.55782 168.66801 +3.27827 244.05246 +1.46325 +21.9465 1.012919914029 0.32910400294265 75.3272 2454616.166666667 172.88363 +0.34407 62.654 14.55576 168.14571 +3.26940 243.54295 +1.46261 +21.9485 1.012905499524 0.32915062083735 75.3401 2454616.208333333 172.91168 +0.34243 62.643 14.55369 167.62341 +3.26054 243.03342 +1.46197 +21.9504 1.012891143751 0.32919739568073 75.3530 2454616.250000000 172.93973 +0.34079 62.632 14.55162 167.10112 +3.25168 242.52388 +1.46133 +21.9524 1.012876848642 0.32924432759919 75.3659 2454616.291666667 172.96779 +0.33915 62.621 14.54954 166.57883 +3.24283 242.01432 +1.46069 +21.9544 1.012862616135 0.32929141669828 75.3787 2454616.333333333 172.99584 +0.33750 62.611 14.54745 166.05655 +3.23398 241.50476 +1.46005 +21.9564 1.012848448169 0.32933866306246 75.3915 2454616.375000000 173.02390 +0.33584 62.600 14.54535 165.53427 +3.22513 240.99518 +1.45941 +21.9584 1.012834346685 0.32938606675500 75.4044 2454616.416666667 173.05197 +0.33418 62.589 14.54325 165.01200 +3.21630 240.48560 +1.45878 +21.9603 1.012820313627 0.32943362781767 75.4172 2454616.458333333 173.08004 +0.33251 62.578 14.54115 164.48973 +3.20746 239.97600 +1.45814 +21.9623 1.012806350938 0.32948134627061 75.4300 2454616.500000000 173.10811 +0.33084 62.567 14.53904 163.96747 +3.19863 239.46639 +1.45751 +21.9642 1.012792460567 0.32952922211212 75.4427 SUBSCLON = 360 - SUBSCLON SUBSUNLO = 360 - SUBSUNLO