Earth's Trojan Asteroids
Simulates Earth with its known Trojan asteroids, including 2010 TK7 and 2020 XL5, librating around the L4 and L5 Lagrange points 60 degrees ahead of and behind Earth.
Scenarios
Solar System
Simulations of our planetary neighborhood from JPL Horizons ephemerides: the eight planets, major moon systems, asteroid families, short-period comets, and interstellar visitors such as ʻOumuamua, Borisov, and 3I/ATLAS.
Eris and Dysnomia
Simulates dwarf planet Eris and its moon Dysnomia in the scattered disc at about 68 AU. Dysnomia’s 37,000 km orbit is the clock used to measure Eris’s mass.
Halley's Comet
Simulates Halley’s Comet on 1 January 2025, outbound beyond Neptune toward aphelion, together with the eight planets on its 76-year retrograde path through the Solar System.
Interstellar Asteroid Oumuamua
Simulates 1I/ʻOumuamua’s hyperbolic flyby of the Sun — excess speed about 26 km/s — among the planets as the first known interstellar object transits the Solar System.
Interstellar Comet 3I/ATLAS
Simulates interstellar comet 3I/ATLAS on its hyperbolic inbound path from 1 March 2023 at 33 AU, passing through the planetary system at about 58 km/s.
Interstellar Comet Borisov
Simulates interstellar comet 2I/Borisov on a hyperbolic trajectory (e ≈ 3.4) through the inner Solar System, perihelion 2.0 AU, then back into interstellar space.
Jupiter and Its Ten Largest Trojan Asteroids
Simulates Jupiter with its ten largest Trojan asteroids at the L4 and L5 Lagrange points, co-orbiting 60 degrees ahead of and behind the planet on primordial captured paths.
Jupiter and the Galilean Moons
Simulates Jupiter with Io, Europa, Ganymede, and Callisto — the Galilean moons in 4:2:1 resonance — as a giant-planet satellite system under Newtonian gravity.
Makemake and MK2
Simulates classical Kuiper Belt dwarf planet Makemake and its dark moon MK2 at ~21,000 km, both orbiting the Sun at roughly 45 AU beyond Neptune.
Mars and Its Moons Phobos and Deimos
Simulates Mars with Phobos and Deimos: Phobos 6,000 km up on a 7.7-hour inward spiral toward tidal breakup, Deimos at 23,460 km on a quieter 30-hour orbit.
Neptune and Its Moons
Simulates Neptune’s moons, dominated by retrograde Triton plus Proteus, Larissa, and highly eccentric Nereid — a captured Kuiper Belt satellite system.
Notable Short-Period Comets
Simulates Encke, Wirtanen, 67P, Wild 2, Borrelly, and Tempel 1 with Mercury, Venus, Earth, Mars, and Jupiter — short-period comets captured onto inner-system paths.
Pentagram of Venus
Simulates the Sun, Earth, and Venus to show the pentagram Venus traces relative to Earth every eight years from their near 13:8 orbital resonance.
Pluto and Its Moons
Simulates Pluto, Charon, Styx, Nix, Kerberos, and Hydra as a binary dwarf-planet system whose barycenter lies outside Pluto, with a 6.4-day mutual orbit.
Saturn and Its Moons
Simulates Saturn with Titan, Enceladus, Mimas, and its other major moons, plus thousands of gravitationally interacting ring particles from the D ring to the F ring.
Shoemaker-Levy 9 Impacts Jupiter
Simulates comet Shoemaker-Levy 9’s 21 fragments slamming into Jupiter in July 1994 at 60 km/s, with the Galilean moons and Sun in the same gravity field.
The 2029 Apophis Close Encounter with Earth
Simulates asteroid 99942 Apophis on its 13 April 2029 Earth flyby — 31,600 km up, inside geostationary orbit — using JPL Horizons states from 6 April 2029.
The Chelyabinsk Impactor's Last Orbit
Simulates the Chelyabinsk impactor’s last weeks: a 17–20 m Apollo asteroid on its outbound solar orbit from 1 January 2013 until atmospheric entry over Russia on 15 February.