EPOXI/EPOCh - Geometry for 04-05 October 2009 Earth South Polar Observation #2 The EPOCh team provided the following observational geometry values covering the 04-05 October 2009 Earth South Polar Observation because corresponding parameters in the archived data products could not be computed by the data pipline due to lack of pointing telemetry for this period. 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% ----------------------- -------------- ----- ----- ------- ------- ------ ------- 2009-10-04T09:37:10.764 2455108.900819 59.4 -73.8 0.11459 1.00022 86.434 53.110 2009-10-04T09:52:11.839 2455108.911248 63.2 -73.8 0.11459 1.00022 86.433 53.111 2009-10-04T10:07:05.470 2455108.921591 66.9 -73.8 0.11458 1.00022 86.433 53.111 2009-10-04T10:22:11.866 2455108.932082 70.7 -73.8 0.11458 1.00022 86.432 53.112 2009-10-04T10:37:09.552 2455108.942472 74.4 -73.8 0.11458 1.00021 86.431 53.112 2009-10-04T10:52:11.804 2455108.952914 78.2 -73.8 0.11458 1.00021 86.430 53.113 2009-10-04T11:07:05.356 2455108.963256 81.9 -73.8 0.11458 1.00021 86.430 53.113 2009-10-04T11:22:11.831 2455108.973748 85.7 -73.8 0.11457 1.00020 86.429 53.114 2009-10-04T11:37:09.502 2455108.984138 89.5 -73.8 0.11457 1.00020 86.428 53.115 2009-10-04T11:52:11.757 2455108.994580 93.3 -73.8 0.11457 1.00020 86.428 53.116 2009-10-04T12:07:05.325 2455109.004923 97.0 -73.8 0.11457 1.00019 86.427 53.116 2009-10-04T12:22:11.784 2455109.015414 100.8 -73.8 0.11457 1.00019 86.426 53.117 2009-10-04T12:37:09.455 2455109.025804 104.5 -73.8 0.11457 1.00019 86.425 53.117 2009-10-04T12:52:11.725 2455109.036247 108.3 -73.8 0.11456 1.00019 86.425 53.118 2009-10-04T13:07:05.239 2455109.046588 112.0 -73.8 0.11456 1.00018 86.424 53.118 2009-10-04T13:22:11.647 2455109.057079 115.8 -73.8 0.11456 1.00018 86.423 53.119 2009-10-04T13:37:09.415 2455109.067470 119.6 -73.8 0.11456 1.00018 86.422 53.120 2009-10-04T13:52:11.674 2455109.077913 123.3 -73.8 0.11456 1.00017 86.422 53.121 2009-10-04T14:07:05.207 2455109.088255 127.1 -73.8 0.11456 1.00017 86.421 53.121 2009-10-04T14:22:11.616 2455109.098746 130.9 -73.8 0.11455 1.00017 86.420 53.122 2009-10-04T14:37:09.310 2455109.109136 134.6 -73.8 0.11455 1.00016 86.420 53.123 2009-10-04T14:52:11.655 2455109.119579 138.4 -73.8 0.11455 1.00016 86.419 53.124 2009-10-04T15:07:05.125 2455109.129920 142.1 -73.8 0.11455 1.00016 86.418 53.124 2009-10-04T15:22:11.565 2455109.140412 145.9 -73.8 0.11455 1.00016 86.417 53.125 2009-10-04T15:37:09.278 2455109.150802 149.7 -73.8 0.11454 1.00015 86.417 53.125 2009-10-04T15:52:11.604 2455109.161245 153.4 -73.8 0.11454 1.00015 86.416 53.126 2009-10-04T16:07:05.094 2455109.171587 157.2 -73.8 0.11454 1.00015 86.415 53.126 2009-10-04T16:22:11.533 2455109.182078 161.0 -73.8 0.11454 1.00014 86.414 53.127 2009-10-04T16:37:09.231 2455109.192468 164.7 -73.8 0.11454 1.00014 86.414 53.128 2009-10-04T16:52:11.408 2455109.202910 168.5 -73.8 0.11454 1.00014 86.413 53.129 2009-10-04T17:07:05.043 2455109.213253 172.2 -73.8 0.11453 1.00013 86.412 53.129 2009-10-04T17:22:11.435 2455109.223744 176.0 -73.8 0.11453 1.00013 86.411 53.130 2009-10-04T17:37:09.196 2455109.234134 179.8 -73.8 0.11453 1.00013 86.411 53.130 2009-10-04T17:52:11.377 2455109.244576 183.5 -73.8 0.11453 1.00013 86.410 53.131 2009-10-04T18:07:05.011 2455109.254919 187.3 -73.8 0.11453 1.00012 86.409 53.131 2009-10-04T18:22:11.404 2455109.265410 191.1 -73.8 0.11452 1.00012 86.408 53.132 2009-10-04T18:37:09.071 2455109.275799 194.8 -73.8 0.11452 1.00012 86.408 53.133 2009-10-04T18:52:11.330 2455109.286242 198.6 -73.8 0.11452 1.00011 86.407 53.134 2009-10-04T19:07:04.902 2455109.296584 202.3 -73.8 0.11452 1.00011 86.406 53.134 2009-10-04T19:22:11.357 2455109.307076 206.1 -73.8 0.11452 1.00011 86.406 53.135 2009-10-04T19:37:09.039 2455109.317466 209.9 -73.8 0.11452 1.00011 86.405 53.135 2009-10-04T19:52:11.298 2455109.327909 213.6 -73.8 0.11451 1.00010 86.404 53.136 2009-10-04T20:07:04.851 2455109.338251 217.4 -73.8 0.11451 1.00010 86.403 53.136 2009-10-04T20:22:11.326 2455109.348742 221.2 -73.8 0.11451 1.00010 86.403 53.137 2009-10-04T20:37:08.992 2455109.359132 224.9 -73.8 0.11451 1.00009 86.402 53.138 2009-10-04T20:52:11.247 2455109.369575 228.7 -73.8 0.11451 1.00009 86.401 53.139 2009-10-04T21:07:04.820 2455109.379917 232.4 -73.8 0.11450 1.00009 86.400 53.139 2009-10-04T21:22:11.189 2455109.390407 236.2 -73.8 0.11450 1.00008 86.400 53.140 2009-10-04T21:37:08.949 2455109.400798 239.9 -73.8 0.11450 1.00008 86.399 53.141 2009-10-04T21:52:11.216 2455109.411241 243.7 -73.8 0.11450 1.00008 86.398 53.142 2009-10-04T22:07:04.698 2455109.421582 247.5 -73.8 0.11450 1.00008 86.397 53.142 2009-10-04T22:22:11.138 2455109.432073 251.2 -73.8 0.11449 1.00007 86.397 53.143 2009-10-04T22:37:08.898 2455109.442464 255.0 -73.8 0.11449 1.00007 86.396 53.143 2009-10-04T22:52:11.165 2455109.452907 258.8 -73.8 0.11449 1.00007 86.395 53.144 2009-10-04T23:07:04.663 2455109.463248 262.5 -73.8 0.11449 1.00006 86.395 53.144 2009-10-04T23:22:11.106 2455109.473740 266.3 -73.8 0.11449 1.00006 86.394 53.145 2009-10-04T23:37:08.859 2455109.484130 270.0 -73.8 0.11449 1.00006 86.393 53.146 2009-10-04T23:52:11.134 2455109.494573 273.8 -73.8 0.11448 1.00005 86.392 53.147 2009-10-05T00:07:04.616 2455109.504914 277.6 -73.8 0.11448 1.00005 86.392 53.147 2009-10-05T00:22:11.056 2455109.515406 281.3 -73.8 0.11448 1.00005 86.391 53.148 2009-10-05T00:37:08.769 2455109.525796 285.1 -73.8 0.11448 1.00005 86.390 53.148 2009-10-05T00:52:10.997 2455109.536238 288.9 -73.8 0.11448 1.00004 86.389 53.149 2009-10-05T01:07:04.585 2455109.546581 292.6 -73.8 0.11447 1.00004 86.389 53.149 2009-10-05T01:22:11.024 2455109.557072 296.4 -73.8 0.11447 1.00004 86.388 53.150 2009-10-05T01:37:08.722 2455109.567462 300.1 -73.8 0.11447 1.00003 86.387 53.151 2009-10-05T01:52:10.899 2455109.577904 303.9 -73.8 0.11447 1.00003 86.386 53.152 2009-10-05T02:07:04.467 2455109.588246 307.6 -73.8 0.11447 1.00003 86.386 53.152 2009-10-05T02:22:10.926 2455109.598738 311.4 -73.8 0.11446 1.00002 86.385 53.153 2009-10-05T02:37:08.609 2455109.609127 315.2 -73.8 0.11446 1.00002 86.384 53.153 2009-10-05T02:52:10.868 2455109.619570 319.0 -73.8 0.11446 1.00002 86.383 53.154 2009-10-05T03:07:04.420 2455109.629912 322.7 -73.8 0.11446 1.00002 86.383 53.154 2009-10-05T03:22:10.895 2455109.640404 326.5 -73.8 0.11446 1.00001 86.382 53.155 2009-10-05T03:37:08.566 2455109.650794 330.2 -73.8 0.11445 1.00001 86.381 53.156 2009-10-05T03:52:10.821 2455109.661236 334.0 -73.8 0.11445 1.00001 86.381 53.157 2009-10-05T04:07:04.404 2455109.671579 337.7 -73.8 0.11445 1.00000 86.380 53.157 2009-10-05T04:22:10.848 2455109.682070 341.5 -73.8 0.11445 1.00000 86.379 53.158 2009-10-05T04:37:08.526 2455109.692460 345.3 -73.8 0.11445 1.00000 86.378 53.158 2009-10-05T04:52:10.789 2455109.702903 349.0 -73.8 0.11444 1.00000 86.378 53.159 2009-10-05T05:07:04.342 2455109.713245 352.8 -73.8 0.11444 0.99999 86.377 53.159 2009-10-05T05:22:10.711 2455109.723735 356.6 -73.8 0.11444 0.99999 86.376 53.160 2009-10-05T05:37:08.479 2455109.734126 0.3 -73.8 0.11444 0.99999 86.375 53.161 2009-10-05T05:52:10.738 2455109.744569 4.1 -73.8 0.11444 0.99998 86.375 53.162 2009-10-05T06:07:04.283 2455109.754911 7.8 -73.8 0.11443 0.99998 86.374 53.162 2009-10-05T06:22:10.680 2455109.765401 11.6 -73.8 0.11443 0.99998 86.373 53.163 2009-10-05T06:37:08.421 2455109.775792 15.4 -73.8 0.11443 0.99997 86.373 53.164 2009-10-05T06:52:10.707 2455109.786235 19.1 -73.8 0.11443 0.99997 86.372 53.165 2009-10-05T07:07:04.197 2455109.796576 22.9 -73.8 0.11443 0.99997 86.371 53.165 2009-10-05T07:22:10.629 2455109.807067 26.7 -73.8 0.11442 0.99997 86.370 53.166 2009-10-05T07:37:08.389 2455109.817458 30.4 -73.8 0.11442 0.99996 86.370 53.166 2009-10-05T07:52:10.656 2455109.827901 34.2 -73.8 0.11442 0.99996 86.369 53.167 2009-10-05T08:07:04.154 2455109.838243 37.9 -73.8 0.11442 0.99996 86.368 53.167 2009-10-05T08:22:10.605 2455109.848734 41.7 -73.8 0.11442 0.99995 86.367 53.168 2009-10-05T08:37:08.291 2455109.859124 45.5 -73.8 0.11441 0.99995 86.367 53.169 2009-10-05T08:52:10.519 2455109.869566 49.2 -73.8 0.11441 0.99995 86.366 53.170 2009-10-05T09:07:04.107 2455109.879909 53.0 -73.8 0.11441 0.99994 86.365 53.170 2009-10-05T09:22:10.546 2455109.890400 56.8 -73.8 0.11441 0.99994 86.364 53.171 2009-10-05T09:37:08.260 2455109.900790 60.5 -73.8 0.11441 0.99994 86.364 53.171 ----------------------- -------------- ----- ----- ------- ------- ------ ------- 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 Earth image at moment of image arrival at spacecraft Lat = subspacecraft latitude on Earth Range = range of spacecraft from Earth geocenter Helio = heliocentric range of Earth 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(49) ; 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 central meridian West longitude SUBSCLAT = JULIAN ; subspacecraft latitude SUBSUNLO = JULIAN ; subSun central meridian West longitude 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 SUB SUB SUB SUB JULIAN RA DEC ILL_FR EQ_DIAM SCLON SCLAT SUNLO SUNLA NPPA RANGE_HELIO RANGE_TARGET PH_ANG ------------------ --------- -------- ------ -------- ------ ----- ------ ----- -------- -------------- ---------------- ------- 2455108.500000000 277.93970 +73.64771 53.085 153.4083 85.36 -73.76 177.51 -4.34 +0.1913 1.000338908097 0.11465020037762 86.4624 2455108.541666667 277.93316 +73.64760 53.088 153.4168 70.32 -73.76 162.50 -4.36 +0.1913 1.000326967471 0.11464388622275 86.4595 2455108.583333333 277.92664 +73.64749 53.090 153.4253 55.27 -73.76 147.50 -4.38 +0.1913 1.000315028864 0.11463751357427 86.4566 2455108.625000000 277.92012 +73.64737 53.093 153.4339 40.22 -73.76 132.50 -4.39 +0.1913 1.000303092285 0.11463108243673 86.4536 2455108.666666667 277.91361 +73.64726 53.095 153.4426 25.17 -73.76 117.49 -4.41 +0.1913 1.000291157742 0.11462459281467 86.4507 2455108.708333333 277.90710 +73.64715 53.098 153.4514 10.13 -73.76 102.49 -4.42 +0.1913 1.000279225244 0.11461804471264 86.4478 2455108.750000000 277.90060 +73.64704 53.101 153.4602 355.08 -73.76 87.49 -4.44 +0.1913 1.000267294801 0.11461143813520 86.4448 2455108.791666667 277.89410 +73.64692 53.103 153.4691 340.03 -73.76 72.48 -4.46 +0.1913 1.000255366419 0.11460477308690 86.4419 2455108.833333333 277.88761 +73.64681 53.106 153.4781 324.98 -73.76 57.48 -4.47 +0.1913 1.000243440108 0.11459804957231 86.4389 2455108.875000000 277.88113 +73.64670 53.108 153.4872 309.94 -73.76 42.48 -4.49 +0.1913 1.000231515875 0.11459126759599 86.4360 2455108.916666667 277.87465 +73.64658 53.111 153.4964 294.89 -73.76 27.47 -4.50 +0.1913 1.000219593729 0.11458442716251 86.4331 2455108.958333333 277.86817 +73.64647 53.113 153.5056 279.84 -73.76 12.47 -4.52 +0.1913 1.000207673676 0.11457752827643 86.4301 2455109.000000000 277.86171 +73.64636 53.116 153.5150 264.79 -73.76 357.47 -4.54 +0.1913 1.000195755725 0.11457057094234 86.4272 2455109.041666667 277.85524 +73.64624 53.118 153.5244 249.75 -73.76 342.46 -4.55 +0.1913 1.000183839882 0.11456355516479 86.4243 2455109.083333333 277.84879 +73.64613 53.121 153.5338 234.70 -73.76 327.46 -4.57 +0.1913 1.000171926155 0.11455648094837 86.4213 2455109.125000000 277.84234 +73.64602 53.124 153.5434 219.65 -73.76 312.46 -4.59 +0.1913 1.000160014551 0.11454934829764 86.4184 2455109.166666667 277.83589 +73.64590 53.126 153.5530 204.60 -73.76 297.45 -4.60 +0.1914 1.000148105076 0.11454215721717 86.4155 2455109.208333333 277.82946 +73.64579 53.129 153.5628 189.56 -73.76 282.45 -4.62 +0.1914 1.000136197737 0.11453490771154 86.4125 2455109.250000000 277.82302 +73.64568 53.131 153.5726 174.51 -73.76 267.45 -4.63 +0.1914 1.000124292540 0.11452759978531 86.4096 2455109.291666667 277.81660 +73.64556 53.134 153.5824 159.46 -73.76 252.44 -4.65 +0.1914 1.000112389491 0.11452023344304 86.4066 2455109.333333333 277.81018 +73.64545 53.136 153.5924 144.41 -73.76 237.44 -4.67 +0.1914 1.000100488597 0.11451280868931 86.4037 2455109.375000000 277.80376 +73.64534 53.139 153.6024 129.37 -73.76 222.44 -4.68 +0.1914 1.000088589863 0.11450532552867 86.4008 2455109.416666667 277.79735 +73.64522 53.142 153.6125 114.32 -73.76 207.43 -4.70 +0.1914 1.000076693295 0.11449778396569 86.3978 2455109.458333333 277.79095 +73.64511 53.144 153.6227 99.27 -73.76 192.43 -4.71 +0.1914 1.000064798898 0.11449018400490 86.3949 2455109.500000000 277.78455 +73.64500 53.147 153.6330 84.22 -73.76 177.43 -4.73 +0.1914 1.000052906677 0.11448252565087 86.3920 2455109.541666667 277.77816 +73.64489 53.149 153.6434 69.18 -73.76 162.43 -4.75 +0.1914 1.000041016638 0.11447480890814 86.3890 2455109.583333333 277.77177 +73.64477 53.152 153.6538 54.13 -73.76 147.42 -4.76 +0.1914 1.000029128784 0.11446703378124 86.3861 2455109.625000000 277.76539 +73.64466 53.154 153.6643 39.08 -73.76 132.42 -4.78 +0.1914 1.000017243122 0.11445920027472 86.3831 2455109.666666667 277.75902 +73.64455 53.157 153.6749 24.03 -73.76 117.42 -4.80 +0.1914 1.000005359655 0.11445130839309 86.3802 2455109.708333333 277.75265 +73.64444 53.159 153.6856 8.99 -73.76 102.41 -4.81 +0.1914 0.999993478387 0.11444335814088 86.3773 2455109.750000000 277.74629 +73.64432 53.162 153.6964 353.94 -73.76 87.41 -4.83 +0.1914 0.999981599323 0.11443534952260 86.3743 2455109.791666667 277.73993 +73.64421 53.165 153.7072 338.89 -73.76 72.41 -4.84 +0.1914 0.999969722466 0.11442728254275 86.3714 2455109.833333333 277.73358 +73.64410 53.167 153.7181 323.84 -73.76 57.40 -4.86 +0.1914 0.999957847820 0.11441915720584 86.3685 2455109.875000000 277.72724 +73.64399 53.170 153.7291 308.80 -73.75 42.40 -4.88 +0.1914 0.999945975389 0.11441097351635 86.3655 2455109.916666667 277.72090 +73.64388 53.172 153.7402 293.75 -73.75 27.40 -4.89 +0.1914 0.999934105175 0.11440273147876 86.3626 2455109.958333333 277.71457 +73.64377 53.175 153.7513 278.70 -73.75 12.39 -4.91 +0.1914 0.999922237182 0.11439443109755 86.3597 2455110.000000000 277.70824 +73.64366 53.177 153.7626 263.65 -73.75 357.39 -4.92 +0.1914 0.999910371413 0.11438607237716 86.3567 2455110.041666667 277.70192 +73.64355 53.180 153.7739 248.61 -73.75 342.39 -4.94 +0.1914 0.999898507869 0.11437765532206 86.3538 2455110.083333333 277.69560 +73.64344 53.182 153.7853 233.56 -73.75 327.38 -4.96 +0.1914 0.999886646554 0.11436917993668 86.3508 2455110.125000000 277.68929 +73.64333 53.185 153.7968 218.51 -73.75 312.38 -4.97 +0.1914 0.999874787470 0.11436064622546 86.3479 2455110.166666667 277.68299 +73.64322 53.188 153.8083 203.46 -73.75 297.38 -4.99 +0.1914 0.999862930619 0.11435205419280 86.3450 2455110.208333333 277.67669 +73.64311 53.190 153.8199 188.42 -73.75 282.37 -5.00 +0.1914 0.999851076003 0.11434340384311 86.3420 2455110.250000000 277.67040 +73.64301 53.193 153.8317 173.37 -73.75 267.37 -5.02 +0.1915 0.999839223622 0.11433469518078 86.3391 2455110.291666667 277.66411 +73.64290 53.195 153.8435 158.32 -73.75 252.37 -5.04 +0.1915 0.999827373479 0.11432592821020 86.3362 2455110.333333333 277.65783 +73.64279 53.198 153.8553 143.28 -73.75 237.37 -5.05 +0.1915 0.999815525576 0.11431710293572 86.3332 2455110.375000000 277.65156 +73.64268 53.200 153.8673 128.23 -73.75 222.36 -5.07 +0.1915 0.999803679911 0.11430821936171 86.3303 2455110.416666667 277.64529 +73.64258 53.203 153.8793 113.18 -73.75 207.36 -5.09 +0.1915 0.999791836488 0.11429927749249 86.3274 2455110.458333333 277.63903 +73.64247 53.205 153.8914 98.13 -73.75 192.36 -5.10 +0.1915 0.999779995306 0.11429027733240 86.3244 2455110.500000000 277.63277 +73.64237 53.208 153.9036 83.09 -73.75 177.35 -5.12 +0.1915 0.999768156365 0.11428121888573 86.3215 SUBSCLON = 360 - SUBSCLON SUBSCLON[ 6:*] = 360 + SUBSCLON[ 6:*] SUBSCLON[30:*] = 360 + SUBSCLON[30:*] SUBSUNLO = 360 - SUBSUNLO SUBSUNLO[12:*] = 360 + SUBSUNLO[12:*] SUBSUNLO[36:*] = 360 + SUBSUNLO[36:*]