EPOXI/EPOCh - Geometry for 04-05 June 2008 Earth Equatorial Observation #5 The EPOCh team provided the following observational geometry values covering the 04-05 June 2008 Earth Equatorial Observation for convenience. Pointing telemetry in the form of reconstructed (actual) SPICE C-kernels was available for this period, and thus the data pipline was able to compute the corresponding parameters which are available in the archived data products. 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% ----------------------- -------------- ----- ----- ------- ------- ------ ------- 2008-06-04T16:57:30.863 2454622.206607 149.5 0.3 0.33721 1.01465 76.533 61.638 2008-06-04T17:12:31.946 2454622.217036 153.3 0.3 0.33722 1.01465 76.535 61.636 2008-06-04T17:27:25.577 2454622.227379 157.0 0.3 0.33723 1.01465 76.537 61.634 2008-06-04T17:42:31.974 2454622.237870 160.8 0.3 0.33724 1.01465 76.540 61.632 2008-06-04T17:57:29.644 2454622.248260 164.5 0.3 0.33725 1.01465 76.542 61.630 2008-06-04T18:12:31.907 2454622.258703 168.3 0.3 0.33726 1.01466 76.544 61.628 2008-06-04T18:27:25.483 2454622.269045 172.0 0.3 0.33726 1.01466 76.547 61.626 2008-06-04T18:42:31.934 2454622.279536 175.8 0.3 0.33727 1.01466 76.549 61.624 2008-06-04T18:57:29.613 2454622.289926 179.5 0.3 0.33728 1.01466 76.551 61.622 2008-06-04T19:12:31.864 2454622.300369 183.3 0.3 0.33729 1.01466 76.554 61.620 2008-06-04T19:27:25.425 2454622.310711 187.0 0.3 0.33730 1.01466 76.556 61.618 2008-06-04T19:42:31.891 2454622.321202 190.8 0.3 0.33731 1.01466 76.559 61.616 2008-06-04T19:57:29.582 2454622.331592 194.5 0.3 0.33731 1.01467 76.561 61.614 2008-06-04T20:12:31.825 2454622.342035 198.3 0.3 0.33732 1.01467 76.563 61.612 2008-06-04T20:27:25.393 2454622.352377 202.0 0.3 0.33733 1.01467 76.566 61.610 2008-06-04T20:42:31.755 2454622.362868 205.8 0.3 0.33734 1.01467 76.568 61.608 2008-06-04T20:57:29.523 2454622.373258 209.6 0.3 0.33735 1.01467 76.570 61.606 2008-06-04T21:12:31.782 2454622.383701 213.3 0.3 0.33736 1.01467 76.573 61.604 2008-06-04T21:27:25.303 2454622.394043 217.0 0.3 0.33736 1.01467 76.575 61.602 2008-06-04T21:42:31.716 2454622.404534 220.8 0.3 0.33737 1.01468 76.577 61.600 2008-06-04T21:57:29.468 2454622.414924 224.6 0.3 0.33738 1.01468 76.580 61.598 2008-06-04T22:12:31.743 2454622.425367 228.3 0.3 0.33739 1.01468 76.582 61.596 2008-06-04T22:27:25.233 2454622.435709 232.0 0.3 0.33740 1.01468 76.585 61.594 2008-06-04T22:42:31.684 2454622.446200 235.8 0.3 0.33741 1.01468 76.587 61.592 2008-06-04T22:57:29.378 2454622.456590 239.6 0.3 0.33741 1.01468 76.589 61.590 2008-06-04T23:12:31.712 2454622.467034 243.3 0.3 0.33742 1.01468 76.592 61.588 2008-06-04T23:27:25.194 2454622.477375 247.1 0.3 0.33743 1.01469 76.594 61.586 2008-06-04T23:42:31.633 2454622.487866 250.8 0.3 0.33744 1.01469 76.596 61.584 2008-06-04T23:57:29.339 2454622.498256 254.6 0.3 0.33745 1.01469 76.599 61.582 2008-06-05T00:12:31.567 2454622.508699 258.3 0.3 0.33746 1.01469 76.601 61.580 2008-06-05T00:27:25.151 2454622.519041 262.1 0.3 0.33746 1.01469 76.603 61.578 2008-06-05T00:42:31.594 2454622.529532 265.8 0.3 0.33747 1.01469 76.606 61.576 2008-06-05T00:57:29.300 2454622.539923 269.6 0.3 0.33748 1.01469 76.608 61.574 2008-06-05T01:12:31.481 2454622.550364 273.4 0.3 0.33749 1.01470 76.610 61.572 2008-06-05T01:27:25.120 2454622.560707 277.1 0.3 0.33750 1.01470 76.613 61.570 2008-06-05T01:42:31.504 2454622.571198 280.9 0.3 0.33751 1.01470 76.615 61.568 2008-06-05T01:57:29.179 2454622.581588 284.6 0.3 0.33751 1.01470 76.618 61.566 2008-06-05T02:12:31.438 2454622.592031 288.4 0.3 0.33752 1.01470 76.620 61.564 2008-06-05T02:27:24.998 2454622.602373 292.1 0.3 0.33753 1.01470 76.622 61.562 2008-06-05T02:42:31.465 2454622.612864 295.9 0.3 0.33754 1.01470 76.625 61.560 2008-06-05T02:57:29.128 2454622.623254 299.6 0.3 0.33755 1.01471 76.627 61.558 2008-06-05T03:12:31.399 2454622.633697 303.4 0.3 0.33755 1.01471 76.629 61.556 2008-06-05T03:27:24.975 2454622.644039 307.1 0.3 0.33756 1.01471 76.632 61.554 2008-06-05T03:42:31.426 2454622.654530 310.9 0.3 0.33757 1.01471 76.634 61.552 2008-06-05T03:57:29.105 2454622.664920 314.6 0.3 0.33758 1.01471 76.636 61.550 2008-06-05T04:12:31.356 2454622.675363 318.4 0.3 0.33759 1.01471 76.639 61.548 2008-06-05T04:27:24.932 2454622.685705 322.1 0.3 0.33760 1.01471 76.641 61.546 2008-06-05T04:42:31.289 2454622.696195 325.9 0.3 0.33760 1.01471 76.644 61.544 2008-06-05T04:57:29.066 2454622.706586 329.6 0.3 0.33761 1.01472 76.646 61.542 2008-06-05T05:12:31.317 2454622.717029 333.4 0.3 0.33762 1.01472 76.648 61.540 2008-06-05T05:27:24.854 2454622.727371 337.1 0.3 0.33763 1.01472 76.651 61.538 2008-06-05T05:42:31.246 2454622.737862 340.9 0.3 0.33764 1.01472 76.653 61.536 2008-06-05T05:57:29.011 2454622.748252 344.6 0.3 0.33764 1.01472 76.655 61.534 2008-06-05T06:12:31.274 2454622.758695 348.4 0.3 0.33765 1.01472 76.658 61.532 2008-06-05T06:27:24.764 2454622.769037 352.1 0.3 0.33766 1.01472 76.660 61.530 2008-06-05T06:42:31.207 2454622.779528 355.9 0.3 0.33767 1.01473 76.662 61.528 2008-06-05T06:57:28.968 2454622.789919 359.6 0.3 0.33768 1.01473 76.665 61.526 2008-06-05T07:12:31.235 2454622.800362 3.4 0.3 0.33769 1.01473 76.667 61.524 2008-06-05T07:27:24.725 2454622.810703 7.1 0.3 0.33769 1.01473 76.670 61.522 2008-06-05T07:42:31.176 2454622.821194 10.9 0.3 0.33770 1.01473 76.672 61.520 2008-06-05T07:57:28.870 2454622.831584 14.7 0.3 0.33771 1.01473 76.674 61.518 2008-06-05T08:12:31.110 2454622.842027 18.4 0.3 0.33772 1.01473 76.677 61.516 2008-06-05T08:27:24.686 2454622.852369 22.1 0.3 0.33773 1.01474 76.679 61.514 2008-06-05T08:42:31.137 2454622.862860 25.9 0.3 0.33773 1.01474 76.681 61.512 2008-06-05T08:57:28.831 2454622.873250 29.7 0.3 0.33774 1.01474 76.684 61.510 2008-06-05T09:12:31.059 2454622.883693 33.4 0.3 0.33775 1.01474 76.686 61.508 2008-06-05T09:27:24.572 2454622.894034 37.2 0.3 0.33776 1.01474 76.688 61.506 2008-06-05T09:42:31.086 2454622.904527 40.9 0.3 0.33777 1.01474 76.691 61.504 2008-06-05T09:57:28.710 2454622.914916 44.7 0.3 0.33777 1.01474 76.693 61.502 2008-06-05T10:12:30.969 2454622.925358 48.4 0.3 0.33778 1.01475 76.696 61.500 2008-06-05T10:27:24.533 2454622.935701 52.2 0.3 0.33779 1.01475 76.698 61.498 2008-06-05T10:42:30.996 2454622.946192 55.9 0.3 0.33780 1.01475 76.700 61.496 2008-06-05T10:57:28.663 2454622.956582 59.7 0.3 0.33781 1.01475 76.703 61.494 2008-06-05T11:12:30.930 2454622.967025 63.4 0.3 0.33781 1.01475 76.705 61.492 2008-06-05T11:27:24.490 2454622.977367 67.2 0.3 0.33782 1.01475 76.707 61.490 2008-06-05T11:42:30.957 2454622.987858 70.9 0.3 0.33783 1.01475 76.710 61.488 2008-06-05T11:57:28.639 2454622.998248 74.7 0.3 0.33784 1.01475 76.712 61.486 2008-06-05T12:12:30.891 2454623.008691 78.5 0.3 0.33785 1.01476 76.714 61.484 2008-06-05T12:27:24.467 2454623.019033 82.2 0.3 0.33786 1.01476 76.717 61.482 2008-06-05T12:42:30.820 2454623.029523 86.0 0.3 0.33786 1.01476 76.719 61.480 2008-06-05T12:57:28.596 2454623.039914 89.7 0.3 0.33787 1.01476 76.722 61.478 2008-06-05T13:12:30.848 2454623.050357 93.5 0.3 0.33788 1.01476 76.724 61.476 2008-06-05T13:27:24.385 2454623.060699 97.2 0.3 0.33789 1.01476 76.726 61.474 2008-06-05T13:42:30.781 2454623.071190 101.0 0.3 0.33790 1.01476 76.729 61.472 2008-06-05T13:57:28.542 2454623.081580 104.7 0.3 0.33790 1.01477 76.731 61.469 2008-06-05T14:12:30.808 2454623.092023 108.5 0.3 0.33791 1.01477 76.733 61.467 2008-06-05T14:27:24.345 2454623.102365 112.2 0.3 0.33792 1.01477 76.736 61.465 2008-06-05T14:42:30.738 2454623.112856 116.0 0.3 0.33793 1.01477 76.738 61.463 2008-06-05T14:57:28.491 2454623.123246 119.7 0.3 0.33794 1.01477 76.740 61.461 2008-06-05T15:12:30.765 2454623.133689 123.5 0.3 0.33794 1.01477 76.743 61.459 2008-06-05T15:27:24.259 2454623.144031 127.2 0.3 0.33795 1.01477 76.745 61.457 2008-06-05T15:42:30.699 2454623.154522 131.0 0.3 0.33796 1.01478 76.748 61.455 2008-06-05T15:57:28.452 2454623.164913 134.7 0.4 0.33797 1.01478 76.750 61.453 2008-06-05T16:12:30.640 2454623.175355 138.5 0.4 0.33798 1.01478 76.752 61.451 2008-06-05T16:27:24.216 2454623.185697 142.2 0.4 0.33798 1.01478 76.755 61.449 2008-06-05T16:42:30.668 2454623.196188 146.0 0.4 0.33799 1.01478 76.757 61.447 2008-06-05T16:57:28.362 2454623.206578 149.7 0.4 0.33800 1.01478 76.759 61.445 ----------------------- -------------- ----- ----- ------- ------- ------ ------- 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(31) ; 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 ------------------ --------- -------- ------ -------- ------ ----- ------ ----- -------- -------------- ---------------- ------- 2454621.708333333 177.11124 -0.16861 61.740 52.22032 29.97 +0.22 105.34 +22.61 359.9977 1.014580280426 0.33680943631291 76.4198 2454621.750000000 177.14273 -0.17245 61.732 52.21501 14.96 +0.22 90.35 +22.61 359.9977 1.014586072773 0.33684368407089 76.4292 2454621.790972222 177.17369 -0.17623 61.725 52.20980 0.20 +0.22 75.60 +22.62 359.9977 1.014591758710 0.33687729628652 76.4385 2454621.791666667 177.17422 -0.17629 61.724 52.20971 359.95 +0.22 75.35 +22.62 359.9977 1.014591854998 0.33687786543192 76.4387 2454621.833333333 177.20570 -0.18013 61.716 52.20442 344.94 +0.23 60.35 +22.62 359.9978 1.014597627101 0.33691198042168 76.4481 2454621.875000000 177.23719 -0.18397 61.708 52.19915 329.93 +0.23 45.35 +22.63 359.9978 1.014603389086 0.33694602906589 76.4575 2454621.916666667 177.26867 -0.18782 61.700 52.19389 314.92 +0.24 30.35 +22.63 359.9978 1.014609140954 0.33698001139030 76.4669 2454621.958333333 177.30016 -0.19166 61.692 52.18863 299.91 +0.24 15.35 +22.64 359.9978 1.014614882709 0.33701392742070 76.4764 2454622.000000000 177.33164 -0.19550 61.684 52.18339 284.91 +0.24 0.36 +22.64 359.9979 1.014620614353 0.33704777718288 76.4858 2454622.000694444 177.33217 -0.19557 61.684 52.18330 284.66 +0.24 0.11 +22.64 359.9979 1.014620709795 0.33704834078429 76.4860 2454622.001388889 177.33269 -0.19563 61.684 52.18322 284.41 +0.24 359.86 +22.64 359.9979 1.014620805234 0.33704890436730 76.4861 2454622.041666667 177.36312 -0.19935 61.676 52.17816 269.90 +0.25 345.36 +22.65 359.9979 1.014626335890 0.33708156070267 76.4952 2454622.083333333 177.39460 -0.20320 61.668 52.17294 254.89 +0.25 330.36 +22.65 359.9979 1.014632047324 0.33711527800590 76.5047 2454622.125000000 177.42608 -0.20705 61.660 52.16774 239.88 +0.26 315.36 +22.66 359.9979 1.014637748658 0.33714892911841 76.5141 2454622.166666667 177.45756 -0.21090 61.652 52.16254 224.87 +0.26 300.36 +22.66 359.9980 1.014643439899 0.33718251406603 76.5236 2454622.208333333 177.48903 -0.21475 61.644 52.15735 209.86 +0.26 285.37 +22.67 359.9980 1.014649121049 0.33721603287459 76.5330 2454622.250000000 177.52051 -0.21860 61.636 52.15218 194.85 +0.27 270.37 +22.67 359.9980 1.014654792115 0.33724948556989 76.5424 2454622.291666667 177.55198 -0.22245 61.628 52.14702 179.84 +0.27 255.37 +22.68 359.9980 1.014660453103 0.33728287217773 76.5519 2454622.333333333 177.58345 -0.22631 61.620 52.14187 164.83 +0.28 240.37 +22.68 359.9981 1.014666104018 0.33731619272388 76.5613 2454622.375000000 177.61492 -0.23017 61.612 52.13673 149.82 +0.28 225.37 +22.68 359.9981 1.014671744866 0.33734944723407 76.5707 2454622.416666667 177.64639 -0.23402 61.604 52.13160 134.81 +0.28 210.38 +22.69 359.9981 1.014677375654 0.33738263573400 76.5802 2454622.458333333 177.67785 -0.23788 61.596 52.12648 119.80 +0.29 195.38 +22.69 359.9981 1.014682996389 0.33741575824931 76.5896 2454622.500000000 177.70932 -0.24174 61.588 52.12137 104.79 +0.29 180.38 +22.70 359.9982 1.014688607078 0.33744881480562 76.5991 2454622.541666667 177.74078 -0.24560 61.580 52.11628 89.78 +0.29 165.38 +22.70 359.9982 1.014694207730 0.33748180542848 76.6085 2454622.583333333 177.77225 -0.24946 61.572 52.11120 74.77 +0.30 150.38 +22.71 359.9982 1.014699798351 0.33751473014338 76.6180 2454622.625000000 177.80371 -0.25332 61.564 52.10612 59.76 +0.30 135.39 +22.71 359.9982 1.014705378950 0.33754758897574 76.6274 2454622.666666667 177.83517 -0.25719 61.556 52.10106 44.75 +0.31 120.39 +22.72 359.9983 1.014710949535 0.33758038195092 76.6369 2454622.708333333 177.86662 -0.26105 61.548 52.09601 29.74 +0.31 105.39 +22.72 359.9983 1.014716510116 0.33761310909420 76.6463 2454622.750000000 177.89808 -0.26492 61.540 52.09097 14.73 +0.31 90.39 +22.73 359.9983 1.014722060702 0.33764577043077 76.6558 2454622.790277778 177.92849 -0.26866 61.532 52.08611 0.22 +0.32 75.89 +22.73 359.9983 1.014727416776 0.33767728052680 76.6649 2454622.790972222 177.92901 -0.26872 61.532 52.08603 359.97 +0.32 75.64 +22.73 359.9983 1.014727509041 0.33767782326540 76.6651 2454622.791666667 177.92954 -0.26879 61.532 52.08594 359.72 +0.32 75.39 +22.73 359.9983 1.014727601302 0.33767836598575 76.6652 2454622.833333333 177.96099 -0.27266 61.524 52.08093 344.71 +0.32 60.40 +22.73 359.9984 1.014733131926 0.33771089578414 76.6747 2454622.875000000 177.99244 -0.27652 61.516 52.07592 329.71 +0.33 45.40 +22.74 359.9984 1.014738652584 0.33774335985088 76.6841 2454622.916666667 178.02390 -0.28040 61.508 52.07092 314.70 +0.33 30.40 +22.74 359.9984 1.014744163286 0.33777575821077 76.6936 2454622.958333333 178.05535 -0.28427 61.500 52.06594 299.69 +0.33 15.40 +22.75 359.9985 1.014749664044 0.33780809088854 76.7030 2454623.000000000 178.08679 -0.28814 61.492 52.06097 284.68 +0.34 0.40 +22.75 359.9985 1.014755154867 0.33784035790879 76.7125 2454623.000694444 178.08732 -0.28820 61.492 52.06089 284.43 +0.34 0.15 +22.75 359.9985 1.014755246297 0.33784089513634 76.7126 2454623.001388889 178.08784 -0.28827 61.492 52.06080 284.18 +0.34 359.90 +22.75 359.9985 1.014755337724 0.33784143234565 76.7128 2454623.041666667 178.11824 -0.29201 61.484 52.05601 269.67 +0.34 345.40 +22.76 359.9985 1.014760635768 0.33787255929601 76.7219 2454623.083333333 178.14969 -0.29589 61.476 52.05106 254.66 +0.35 330.41 +22.76 359.9985 1.014766106758 0.33790469507453 76.7314 2454623.125000000 178.18113 -0.29976 61.468 52.04612 239.65 +0.35 315.41 +22.77 359.9986 1.014771567848 0.33793676526863 76.7408 2454623.166666667 178.21257 -0.30364 61.460 52.04119 224.64 +0.35 300.41 +22.77 359.9986 1.014777019051 0.33796876990239 76.7503 2454623.208333333 178.24401 -0.30752 61.452 52.03627 209.63 +0.36 285.41 +22.77 359.9986 1.014782460379 0.33800070899979 76.7598 2454623.250000000 178.27545 -0.31140 61.444 52.03136 194.62 +0.36 270.41 +22.78 359.9986 1.014787891845 0.33803258258467 76.7692 2454623.291666667 178.30689 -0.31528 61.436 52.02647 179.61 +0.36 255.42 +22.78 359.9987 1.014793313461 0.33806439068072 76.7787 2454623.333333333 178.33833 -0.31916 61.428 52.02158 164.60 +0.37 240.42 +22.79 359.9987 1.014798725242 0.33809613331148 76.7881 2454623.375000000 178.36977 -0.32304 61.420 52.01671 149.59 +0.37 225.42 +22.79 359.9987 1.014804127199 0.33812781050034 76.7976 2454623.416666667 178.40120 -0.32693 61.412 52.01185 134.58 +0.38 210.42 +22.80 359.9987 1.014809519346 0.33815942227054 76.8071 2454623.458333333 178.43263 -0.33081 61.404 52.00699 119.57 +0.38 195.42 +22.80 359.9988 1.014814901699 0.33819096864516 76.8165 2454623.500000000 178.46407 -0.33470 61.396 52.00215 104.56 +0.38 180.43 +22.80 359.9988 1.014820274270 0.33822244964711 76.8260 SUBSCLON = 360 - SUBSCLON SUBSCLON[ 3:*] = 360 + SUBSCLON[ 3:*] SUBSCLON[30:*] = 360 + SUBSCLON[30:*] SUBSUNLO = 360 - SUBSUNLO SUBSUNLO[10:*] = 360 + SUBSUNLO[10:*] SUBSUNLO[38:*] = 360 + SUBSUNLO[38:*]