mirrored file at http://SaturnianCosmology.Org/ For complete access to all the files of this collection see http://SaturnianCosmology.org/search.php ========================================================== Appendix 1a: Solar System Data _________________________________________________________________ _Note:_ The data on these pages has been compiled from a number of sources none of which agree on all items. Some of this data, especially for the smaller satellites, is not very accurate in the first place. Furthermore, orbits vary slightly over time due to gravitational interactions. The accuracy of mass and density data is also limited by the uncertainty in the value of the gravitational constant. * This page presents data on the orbits of the planets and moons along with some historical data. * The physical data page presents data about the objects themselves. * A third page presents some additional miscellaneous data about the planets (only). * The recently discovered tiny moons of Saturn are not included here (but see the links). * The Extrema pages highlight some interesting aspects of this data. * Much more accurate and detailed data is available from JPL's Solar System Dynamics Web site * How to compute planetary positions, by Paul Schlyter * Tutorial on computing planetary positions, by Paul Schlyter * another page on Astronomical Calculations * source code for many astronomical algorithms See below for a key to the columns. _________________________________________________________________ Orbital and Historical Data Distance O_Period Name # Orbits (000 km) (days) Incl Eccen Discoverer Date --------- ---- ------- -------- -------- ----- ----- ---------- ---- ---- Sun - - - - - - - - Mercury I Sun 57910 87.97 7.00 0.21 - - Venus II Sun 108200 224.70 3.39 0.01 - - Earth III Sun 149600 365.26 0.00 0.02 - - Mars IV Sun 227940 686.98 1.85 0.09 - - Jupiter V Sun 778330 4332.71 1.31 0.05 - - Saturn VI Sun 1429400 10759.50 2.49 0.06 - - Uranus VII Sun 2870990 30685.00 0.77 0.05 Herschel 1781 Neptune VIII Sun 4504300 60190.00 1.77 0.01 9) 1846 Pluto IX Sun 5913520 90550 17.15 0.25 Tombaugh 1930 Moon I Earth 384 27.32 5.14 0.05 - Phobos I Hall 1877 Deimos II Mars 23 1.26 1.80 0.00 Hall 1877 Metis XVI Jupiter 128 0.29 0.00 0.00 Synnott 1979 Adrastea XV Jupiter 129 0.30 0.00 0.00 Jewitt(1) 1979 Amalthea V Jupiter 181 0.50 0.40 0.00 Barnard 1892 Thebe XIV Jupiter 222 0.67 0.80 0.02 Synnott 1979 Io I Jupiter 422 1.77 0.04 0.00 2 1610 Europa II Jupiter 671 3.55 0.47 0.01 2) 1610 Ganymede III Jupiter 1070 7.15 0.19 0.00 2) 1610 Callisto IV Jupiter 1883 16.69 0.28 0.01 2) 1610 Themisto XVIIIJupiter 7507 Sheppard(i) 2000 Leda XIII Jupiter 11094 238.72 27.00 0.15 Kowal 1974 Himalia VI Jupiter 11480 250.57 28.00 0.16 Perrine 1904 Lysithea X Jupiter 11720 259.22 29.00 0.11 Nicholson 1938 Elara VII Jupiter 11737 259.65 28.00 0.21 Perrine 1905 Ananke XII Jupiter 21200 -631 147.00 0.17 Nicholson 1951 Carme XI Jupiter 22600 -692 163.00 0.21 Nicholson 1938 Pasiphae VIII Jupiter 23500 -735 147.00 0.38 Melotte 1908 Sinope IX Jupiter 23700 -758 153.00 0.28 Nicholson 1914 Atlas XV Saturn 138 0.60 0.00 0.00 Terrile 1980 Janus X Saturn 151 0.69 0.14 0.01 Dollfus 1966