The order of the satellite encounters and their dates are:
Europa December 16, 1997 Europa February 10, 1998 Europa March 29, 1998 Europa May 31, 1998 Europa July 21, 1998 Europa September 26, 1998 Europa November 22, 1998 Europa February 1, 1999 Callisto May 5, 1999 Callisto June 30, 1999 Callisto August 14, 1999 Callisto September 16, 1999 Io October 11, 1999 Io November 26, 1999The orbital elements given below are Keplerian (semi-major axis, eccentricity, inclination, node angle, arg of periapsis, and mean anomaly). The reference frame is Earth ecliptic and equinox of J2000. The central body for each set of elements and the valid time period for those elements are indicated.
Times are given in both Julian date format in ephemeris time (ET) and calendar date format in Greenwich mean time (GMT). For the general exposure that these elements will receive, GMT has been used and is understood to be the same as universal time (UTC). To clarify any ambiguity between these two time formats, the delta-time (ET minus UTC) and the epoch of each value of delta-time are:
63.184 seconds 01 July 1997The set of Jupiter-centered elements comprise a complete set of elements for general use. The body-centered elements at close approach are included for completeness and are valid only for those times.
The complete set of orbital elements for the Galileo mission are found in four sections: Interplanetary Elements, Probe Elements, Tour Elements, and GEM Elements.
JUPITER APOAPSIS, ORBIT 11, TO EUROPA, ORBIT 12: Orbital Elements valid from J.D. = 2450779.14829 ET (97/11/26 15:32:29 GMT) to J.D. = 2450799.00304 ET (97/12/16 12:03:20 GMT) Epoch of Orbital Elements: J.D. = 2450779.14829 ET (97/11/26 15:32:29 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 3318929.1 km Eccentricity .812060 Inclination 2.030 degree Node Angle -30.155 degree Arg of Periapsis -175.826 degree Mean Anomaly 179.223 degree EUROPA, ORBIT 12, CLOSEST APPROACH: Epoch of Orbital Elements: J.D. = 2450799.00304 ET (97/12/16 12:03:20 GMT) Classical Orbital Elements Europa centered, Earth ecliptic and equinox of J2000 Semi-major Axis -88.4 km Eccentricity 20.960437 Inclination 8.762 degree Node Angle -112.594 degree Arg of Periapsis -104.525 degree Mean Anomaly -.794 degree EUROPA, ORBIT 12, TO JUPITER APOAPSIS, ORBIT 12: Orbital Elements valid from J.D. = 2450799.00304 ET (97/12/16 12:03:20 GMT) to J.D. = 2450827.12363 ET (98/01/13 14:56:59 GMT) Epoch of Orbital Elements: J.D. = 2450799.00304 ET (97/12/16 12:03:20 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 4250124.6 km Eccentricity .849500 Inclination 1.903 degree Node Angle -33.257 degree Arg of Periapsis -166.593 degree Mean Anomaly 1.252 degree JUPITER APOAPSIS, ORBIT 12, TO EUROPA, ORBIT 13: Orbital Elements valid from J.D. = 2450827.12363 ET (98/01/13 14:56:59 GMT) to J.D. = 2450855.24877 ET (98/02/10 17:57:11 GMT) Epoch of Orbital Elements: J.D. = 2450827.12363 ET (98/01/13 14:56:59 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 4248658.3 km Eccentricity .850141 Inclination 1.888 degree Node Angle -33.368 degree Arg of Periapsis -166.432 degree Mean Anomaly 179.745 degree EUROPA, ORBIT 13, CLOSEST APPROACH: Epoch of Orbital Elements: J.D. = 2450855.24877 ET (98/02/10 17:57:11 GMT) Classical Orbital Elements Europa centered, Earth ecliptic and equinox of J2000 Semi-major Axis -81.1 km Eccentricity 64.141612 Inclination 9.923 degree Node Angle -83.786 degree Arg of Periapsis -98.510 degree Mean Anomaly .939 degree EUROPA, ORBIT 13, TO JUPITER APOAPSIS, ORBIT 13: Orbital Elements valid from J.D. = 2450855.24877 ET (98/02/10 17:57:11 GMT) to J.D. = 2450878.64935 ET (98/03/06 03:34:01 GMT) Epoch of Orbital Elements: J.D. = 2450855.24877 ET (98/02/10 17:57:11 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 3719316.5 km Eccentricity .829813 Inclination 1.795 degree Node Angle -32.525 degree Arg of Periapsis -165.702 degree Mean Anomaly -1.686 degree JUPITER APOAPSIS, ORBIT 13, TO EUROPA, ORBIT 14: Orbital Elements valid from J.D. = 2450878.64935 ET (98/03/06 03:34:01 GMT) to J.D. = 2450902.05716 ET (98/03/29 13:21:16 GMT) Epoch of Orbital Elements: J.D. = 2450878.64935 ET (98/03/06 03:34:01 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 3718613.3 km Eccentricity .830159 Inclination 1.789 degree Node Angle -32.577 degree Arg of Periapsis -165.611 degree Mean Anomaly 179.860 degree EUROPA, ORBIT 14, CLOSEST APPROACH: Epoch of Orbital Elements: J.D. = 2450902.05716 ET (98/03/29 13:21:16 GMT) Classical Orbital Elements Europa centered, Earth ecliptic and equinox of J2000 Semi-major Axis -80.0 km Eccentricity 41.114547 Inclination 12.219 degree Node Angle 48.441 degree Arg of Periapsis 98.689 degree Mean Anomaly -.254 degree EUROPA, ORBIT 14, TO JUPITER APOAPSIS, ORBIT 14: Orbital Elements valid from J.D. = 2450902.05716 ET (98/03/29 13:21:16 GMT) to J.D. = 2450933.72532 ET (98/04/30 05:23:24 GMT) Epoch of Orbital Elements: J.D. = 2450902.05716 ET (98/03/29 13:21:16 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 4596091.6 km Eccentricity .861244 Inclination 1.940 degree Node Angle -28.045 degree Arg of Periapsis -167.609 degree Mean Anomaly 1.167 degree JUPITER APOAPSIS, ORBIT 14, TO EUROPA, ORBIT 15: Orbital Elements valid from J.D. = 2450933.72532 ET (98/04/30 05:23:24 GMT) to J.D. = 2450965.38433 ET (98/05/31 21:12:23 GMT) Epoch of Orbital Elements: J.D. = 2450933.72532 ET (98/04/30 05:23:24 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 4595864.1 km Eccentricity .861336 Inclination 1.898 degree Node Angle -28.329 degree Arg of Periapsis -167.255 degree Mean Anomaly 179.769 degree EUROPA, ORBIT 15, CLOSEST APPROACH: Epoch of Orbital Elements: J.D. = 2450965.38433 ET (98/05/31 21:12:23 GMT) Classical Orbital Elements Europa centered, Earth ecliptic and equinox of J2000 Semi-major Axis -80.8 km Eccentricity 51.520000 Inclination 14.017 degree Node Angle 83.188 degree Arg of Periapsis 97.967 degree Mean Anomaly -1.964 degree EUROPA, ORBIT 15, TO JUPITER APOAPSIS, ORBIT 15: Orbital Elements valid from J.D. = 2450965.38433 ET (98/05/31 21:12:23 GMT) to J.D. = 2450990.56112 ET (98/06/26 01:26:58 GMT) Epoch of Orbital Elements: J.D. = 2450965.38433 ET (98/05/31 21:12:23 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 3905584.0 km Eccentricity .838059 Inclination 2.091 degree Node Angle -29.981 degree Arg of Periapsis -163.660 degree Mean Anomaly -1.619 degree JUPITER APOAPSIS, ORBIT 15, TO EUROPA, ORBIT 16: Orbital Elements valid from J.D. = 2450990.56112 ET (98/06/26 01:26:58 GMT) to J.D. = 2451015.71234 ET (98/07/21 05:04:43 GMT) Epoch of Orbital Elements: J.D. = 2450990.56112 ET (98/06/26 01:26:58 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 3905656.8 km Eccentricity .838025 Inclination 2.078 degree Node Angle -30.090 degree Arg of Periapsis -163.511 degree Mean Anomaly 179.879 degree EUROPA, ORBIT 16, CLOSEST APPROACH: Epoch of Orbital Elements: J.D. = 2451015.71234 ET (98/07/21 05:04:43 GMT) Classical Orbital Elements Europa centered, Earth ecliptic and equinox of J2000 Semi-major Axis -85.0 km Eccentricity 40.982157 Inclination 25.738 degree Node Angle -115.193 degree Arg of Periapsis -94.204 degree Mean Anomaly 1.131 degree EUROPA, ORBIT 16, TO JUPITER APOAPSIS, ORBIT 16: Orbital Elements valid from J.D. = 2451015.71234 ET (98/07/21 05:04:43 GMT) to J.D. = 2451049.18472 ET (98/08/23 16:24:57 GMT) Epoch of Orbital Elements: J.D. = 2451015.71234 ET (98/07/21 05:04:43 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 4765148.4 km Eccentricity .866205 Inclination 1.824 degree Node Angle -38.837 degree Arg of Periapsis -152.542 degree Mean Anomaly .984 degree JUPITER APOAPSIS, ORBIT 16, TO EUROPA, ORBIT 17: Orbital Elements valid from J.D. = 2451049.18472 ET (98/08/23 16:24:57 GMT) to J.D. = 2451082.66118 ET (98/09/26 03:51:03 GMT) Epoch of Orbital Elements: J.D. = 2451049.18472 ET (98/08/23 16:24:57 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 4765931.2 km Eccentricity .865897 Inclination 1.779 degree Node Angle -39.599 degree Arg of Periapsis -151.704 degree Mean Anomaly 179.749 degree EUROPA, ORBIT 17, CLOSEST APPROACH: Epoch of Orbital Elements: J.D. = 2451082.66118 ET (98/09/26 03:51:03 GMT) Classical Orbital Elements Europa centered, Earth ecliptic and equinox of J2000 Semi-major Axis -90.3 km Eccentricity 58.098673 Inclination 43.574 degree Node Angle -85.595 degree Arg of Periapsis -90.640 degree Mean Anomaly -1.614 degree EUROPA, ORBIT 17, TO JUPITER APOAPSIS, ORBIT 17: Orbital Elements valid from J.D. = 2451082.66118 ET (98/09/26 03:51:03 GMT) to J.D. = 2451111.32686 ET (98/10/24 19:49:38 GMT) Epoch of Orbital Elements: J.D. = 2451082.66118 ET (98/09/26 03:51:03 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 4264532.6 km Eccentricity .850750 Inclination 1.345 degree Node Angle -40.252 degree Arg of Periapsis -149.842 degree Mean Anomaly -1.207 degree JUPITER APOAPSIS, ORBIT 17, TO EUROPA, ORBIT 18: Orbital Elements valid from J.D. = 2451111.32686 ET (98/10/24 19:49:38 GMT) to J.D. = 2451139.99027 ET (98/11/22 11:44:56 GMT) Epoch of Orbital Elements: J.D. = 2451111.32686 ET (98/10/24 19:49:38 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 4265403.0 km Eccentricity .850373 Inclination 1.331 degree Node Angle -40.607 degree Arg of Periapsis -149.433 degree Mean Anomaly 179.814 degree EUROPA, ORBIT 18, CLOSEST APPROACH: Epoch of Orbital Elements: J.D. = 2451139.99027 ET (98/11/22 11:44:56 GMT) Classical Orbital Elements Europa centered, Earth ecliptic and equinox of J2000 Semi-major Axis -94.3 km Eccentricity 41.761736 Inclination 41.513 degree Node Angle 65.438 degree Arg of Periapsis 91.221 degree Mean Anomaly .582 degree EUROPA, ORBIT 18, TO JUPITER APOAPSIS, ORBIT 18: Orbital Elements valid from J.D. = 2451139.99027 ET (98/11/22 11:44:56 GMT) to J.D. = 2451175.25786 ET (98/12/27 18:10:16 GMT) Epoch of Orbital Elements: J.D. = 2451139.99027 ET (98/11/22 11:44:56 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 4931665.9 km Eccentricity .869920 Inclination 1.729 degree Node Angle -24.325 degree Arg of Periapsis -164.086 degree Mean Anomaly .835 degree JUPITER APOAPSIS, ORBIT 18, TO EUROPA, ORBIT 19: Orbital Elements valid from J.D. = 2451175.25786 ET (98/12/27 18:10:16 GMT) to J.D. = 2451210.59211 ET (99/02/01 02:11:35 GMT) Epoch of Orbital Elements: J.D. = 2451175.25786 ET (98/12/27 18:10:16 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 4934484.9 km Eccentricity .868852 Inclination 1.637 degree Node Angle -25.246 degree Arg of Periapsis -163.088 degree Mean Anomaly 179.720 degree EUROPA, ORBIT 19, CLOSEST APPROACH: Epoch of Orbital Elements: J.D. = 2451210.59211 ET (99/02/01 02:11:35 GMT) Classical Orbital Elements Europa centered, Earth ecliptic and equinox of J2000 Semi-major Axis -101.2 km Eccentricity 31.132689 Inclination 147.955 degree Node Angle 95.858 degree Arg of Periapsis 93.741 degree Mean Anomaly .490 degree EUROPA, ORBIT 19, TO JUPITER APOAPSIS, ORBIT 19: Orbital Elements valid from J.D. = 2451210.59211 ET (99/02/01 02:11:35 GMT) to J.D. = 2451256.40332 ET (99/03/18 21:39:44 GMT) Epoch of Orbital Elements: J.D. = 2451210.59211 ET (99/02/01 02:11:35 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 5840186.1 km Eccentricity .888675 Inclination 2.195 degree Node Angle -25.756 degree Arg of Periapsis -164.492 degree Mean Anomaly -.466 degree JUPITER APOAPSIS, ORBIT 19, TO CALLISTO, ORBIT 20: Orbital Elements valid from J.D. = 2451256.40332 ET (99/03/18 21:39:44 GMT) to J.D. = 2451304.08466 ET (99/05/05 14:00:51 GMT) Epoch of Orbital Elements: J.D. = 2451256.40332 ET (99/03/18 21:39:44 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 5849130.2 km Eccentricity .885788 Inclination 2.128 degree Node Angle -26.257 degree Arg of Periapsis -163.884 degree Mean Anomaly 179.563 degree CALLISTO, ORBIT 20, CLOSEST APPROACH: Epoch of Orbital Elements: J.D. = 2451304.08466 ET (99/05/05 14:00:51 GMT) Classical Orbital Elements Callisto centered, Earth ecliptic and equinox of J2000 Semi-major Axis -101.5 km Eccentricity 37.618858 Inclination 176.314 degree Node Angle 118.778 degree Arg of Periapsis 118.850 degree Mean Anomaly 2.197 degree CALLISTO, ORBIT 20, TO JUPITER APOAPSIS, ORBIT 20: Orbital Elements valid from J.D. = 2451304.08466 ET (99/05/05 14:00:51 GMT) to J.D. = 2451331.94398 ET (99/06/02 10:38:16 GMT) Epoch of Orbital Elements: J.D. = 2451304.08466 ET (99/05/05 14:00:51 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 4390439.3 km Eccentricity .864971 Inclination 2.037 degree Node Angle -22.833 degree Arg of Periapsis -173.878 degree Mean Anomaly 11.425 degree JUPITER APOAPSIS, ORBIT 20, TO CALLISTO, ORBIT 21: Orbital Elements valid from J.D. = 2451331.94398 ET (99/06/02 10:38:16 GMT) to J.D. = 2451359.82404 ET (99/06/30 07:45:34 GMT) Epoch of Orbital Elements: J.D. = 2451331.94398 ET (99/06/02 10:38:16 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 4394400.6 km Eccentricity .863289 Inclination 2.006 degree Node Angle -22.930 degree Arg of Periapsis -173.755 degree Mean Anomaly 179.976 degree CALLISTO, ORBIT 21, CLOSEST APPROACH: Epoch of Orbital Elements: J.D. = 2451359.82404 ET (99/06/30 07:45:34 GMT) Classical Orbital Elements Callisto centered, Earth ecliptic and equinox of J2000 Semi-major Axis -101.8 km Eccentricity 34.918267 Inclination 2.080 degree Node Angle -44.990 degree Arg of Periapsis -164.890 degree Mean Anomaly -.715 degree CALLISTO, ORBIT 21, TO JUPITER APOAPSIS, ORBIT 21: Orbital Elements valid from J.D. = 2451359.82404 ET (99/06/30 07:45:34 GMT) to J.D. = 2451382.33006 ET (99/07/22 19:54:14 GMT) Epoch of Orbital Elements: J.D. = 2451359.82404 ET (99/06/30 07:45:34 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 3439579.3 km Eccentricity .849262 Inclination 2.029 degree Node Angle -21.324 degree Arg of Periapsis -168.058 degree Mean Anomaly -16.500 degree JUPITER APOAPSIS, ORBIT 21, TO CALLISTO, ORBIT 22: Orbital Elements valid from J.D. = 2451382.33006 ET (99/07/22 19:54:14 GMT) to J.D. = 2451404.85769 ET (99/08/14 08:34:00 GMT) Epoch of Orbital Elements: J.D. = 2451382.33006 ET (99/07/22 19:54:14 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 3441237.1 km Eccentricity .848371 Inclination 2.010 degree Node Angle -21.436 degree Arg of Periapsis -167.923 degree Mean Anomaly 179.928 degree CALLISTO, ORBIT 22, CLOSEST APPROACH: Epoch of Orbital Elements: J.D. = 2451404.85769 ET (99/08/14 08:34:00 GMT) Classical Orbital Elements Callisto centered, Earth ecliptic and equinox of J2000 Semi-major Axis -103.4 km Eccentricity 46.381055 Inclination 177.222 degree Node Angle -119.623 degree Arg of Periapsis -127.728 degree Mean Anomaly 1.430 degree CALLISTO, ORBIT 22, TO JUPITER APOAPSIS, ORBIT 22: Orbital Elements valid from J.D. = 2451404.85769 ET (99/08/14 08:34:00 GMT) to J.D. = 2451419.64080 ET (99/08/29 03:21:41 GMT) Epoch of Orbital Elements: J.D. = 2451404.85769 ET (99/08/14 08:34:00 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 2987507.4 km Eccentricity .844213 Inclination 2.167 degree Node Angle -25.179 degree Arg of Periapsis -169.224 degree Mean Anomaly 20.442 degree JUPITER APOAPSIS, ORBIT 22, TO CALLISTO, ORBIT 23: Orbital Elements valid from J.D. = 2451419.64080 ET (99/08/29 03:21:41 GMT) to J.D. = 2451438.22995 ET (99/09/16 17:30:05 GMT) Epoch of Orbital Elements: J.D. = 2451419.64080 ET (99/08/29 03:21:41 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 2988730.8 km Eccentricity .843458 Inclination 2.156 degree Node Angle -25.233 degree Arg of Periapsis -169.175 degree Mean Anomaly 179.990 degree CALLISTO, ORBIT 23, CLOSEST APPROACH: Epoch of Orbital Elements: J.D. = 2451438.22995 ET (99/09/16 17:30:05 GMT) Classical Orbital Elements Callisto centered, Earth ecliptic and equinox of J2000 Semi-major Axis -103.6 km Eccentricity 34.390489 Inclination 178.292 degree Node Angle 171.616 degree Arg of Periapsis 166.497 degree Mean Anomaly .001 degree CALLISTO, ORBIT 23, TO JUPITER APOAPSIS, ORBIT 23: Orbital Elements valid from J.D. = 2451438.22995 ET (99/09/16 17:30:05 GMT) to J.D. = 2451449.46133 ET (99/09/27 23:03:16 GMT) Epoch of Orbital Elements: J.D. = 2451438.22995 ET (99/09/16 17:30:05 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 2545455.9 km Eccentricity .844932 Inclination 2.208 degree Node Angle -26.329 degree Arg of Periapsis -174.643 degree Mean Anomaly 25.870 degree JUPITER APOAPSIS, ORBIT 23, TO IO, ORBIT 24: Orbital Elements valid from J.D. = 2451449.46133 ET (99/09/27 23:03:16 GMT) to J.D. = 2451462.69106 ET (99/10/11 04:34:05 GMT) Epoch of Orbital Elements: J.D. = 2451449.46133 ET (99/09/27 23:03:16 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 2546308.3 km Eccentricity .844315 Inclination 2.196 degree Node Angle -26.357 degree Arg of Periapsis -174.623 degree Mean Anomaly -179.982 degree IO, ORBIT 24, CLOSEST APPROACH: Epoch of Orbital Elements: J.D. = 2451462.69106 ET (99/10/11 04:34:05 GMT) Classical Orbital Elements Io centered, Earth ecliptic and equinox of J2000 Semi-major Axis -97.6 km Eccentricity 24.782854 Inclination 16.338 degree Node Angle -120.032 degree Arg of Periapsis -94.727 degree Mean Anomaly 1.155 degree IO, ORBIT 24, TO JUPITER APOAPSIS, ORBIT 24: Orbital Elements valid from J.D. = 2451462.69106 ET (99/10/11 04:34:05 GMT) to J.D. = 2451485.56678 ET (99/11/03 01:35:06 GMT) Epoch of Orbital Elements: J.D. = 2451462.69106 ET (99/10/11 04:34:05 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 3699495.1 km Eccentricity .891470 Inclination 1.851 degree Node Angle -34.503 degree Arg of Periapsis -162.967 degree Mean Anomaly .725 degree JUPITER APOAPSIS, ORBIT 24, TO IO, ORBIT 25: Orbital Elements valid from J.D. = 2451485.56678 ET (99/11/03 01:35:06 GMT) to J.D. = 2451508.66688 ET (99/11/26 03:59:15 GMT) Epoch of Orbital Elements: J.D. = 2451485.56678 ET (99/11/03 01:35:06 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 3702128.5 km Eccentricity .890124 Inclination 2.235 degree Node Angle -31.516 degree Arg of Periapsis -165.961 degree Mean Anomaly 179.926 degree IO, ORBIT 25, CLOSEST APPROACH: Epoch of Orbital Elements: J.D. = 2451508.66688 ET (99/11/26 03:59:15 GMT) Classical Orbital Elements Io centered, Earth ecliptic and equinox of J2000 Semi-major Axis -108.7 km Eccentricity 20.510549 Inclination 98.784 degree Node Angle -120.021 degree Arg of Periapsis -88.777 degree Mean Anomaly -.438 degree IO, ORBIT 25, TO JUPITER APOAPSIS, ORBIT 25: Orbital Elements valid from J.D. = 2451508.66688 ET (99/11/26 03:59:15 GMT) to J.D. = 2451528.07723 ET (99/12/15 13:50:10 GMT) Epoch of Orbital Elements: J.D. = 2451508.66688 ET (99/11/26 03:59:15 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 3314576.2 km Eccentricity .877324 Inclination 1.340 degree Node Angle -88.198 degree Arg of Periapsis -109.506 degree Mean Anomaly .737 degree JUPITER APOAPSIS, ORBIT 25, TO IO, ORBIT 26: Orbital Elements valid from J.D. = 2451528.07723 ET (99/12/15 13:50:10 GMT) to J.D. = 2451547.72683 ET (00/01/04 05:25:35 GMT) Epoch of Orbital Elements: J.D. = 2451528.07723 ET (99/12/15 13:50:10 GMT) Classical Orbital Elements Jupiter centered, Earth ecliptic and equinox of J2000 Semi-major Axis 8319788689.4 km Eccentricity .999949 Inclination 1.340 degree Node Angle -88.198 degree Arg of Periapsis -79.380 degree Mean Anomaly .001 degree