GJ 3473 - System
Simulates GJ 3473, a cool M-dwarf of 0.36 solar masses, and GJ 3473 b, a 1.9-Earth-mass planet, with an orbital period of 1.2 days, at 0.016 AU from its star, and an equilibrium temperature near 773 K.
Scenarios
Exoplanets
Confirmed exoplanet systems from the NASA Exoplanet Archive, built from published orbital elements. Browse from single-planet hosts to compact multi-planet systems such as TRAPPIST-1, and watch how real architectures hold together under Newtonian gravity.
GJ 3512 - System
Simulates GJ 3512, a cool M-dwarf of 0.12 solar masses, and GJ 3512 b, a 0.46-Jupiter-mass companion, with an orbital period of 203 days, at 0.338 AU from its star, on an eccentric orbit (e ≈ 0.43).
GJ 357 - System
Simulates GJ 357, a nearby red dwarf with a transiting hot Earth and an outer habitable-zone planet. The outer world does not transit. The system is about 31 light-years from the Sun.
GJ 3634 - System
Simulates GJ 3634, a cool M-dwarf of 0.45 solar masses, and GJ 3634 b, a 8.4-Earth-mass planet, with an orbital period of 2.6 days, at 0.029 AU from its star, on an eccentric orbit (e ≈ 0.08).
GJ 367 - System
Simulates GJ 367 b, an iron-rich world on an ultra-short orbit. A year lasts about eight hours, and the high density points to an exposed iron core. The density is higher than Earth's.
GJ 3779 - System
Simulates GJ 3779, a cool M-dwarf of 0.27 solar masses, and GJ 3779 b, a 8.0-Earth-mass planet, with an orbital period of 3.0 days, at 0.026 AU from its star, on an eccentric orbit (e ≈ 0.07).
GJ 3929 - System
Simulates GJ 3929, a cool M-dwarf of 0.31 solar masses, and GJ 3929 b, a 1.8-Earth-mass planet, with an orbital period of 2.6 days, at 0.025 AU from its star, and an equilibrium temperature near 568 K.
GJ 393 - System
Simulates GJ 393, a cool M-dwarf of 0.43 solar masses, and GJ 393 b, a 1.7-Earth-mass planet, with an orbital period of 7.0 days, at 0.054 AU from its star, and an equilibrium temperature near 485 K.
GJ 3942 - System
Simulates GJ 3942, a cool M-dwarf of 0.63 solar masses, and GJ 3942 b, a 7.1-Earth-mass planet, with an orbital period of 6.9 days, at 0.061 AU from its star, and an equilibrium temperature near 590 K, on an eccentric.
GJ 3988 - System
Simulates GJ 3988, a cool M-dwarf of 0.18 solar masses, and GJ 3988 b, a 3.7-Earth-mass planet, with an orbital period of 6.9 days, at 0.041 AU from its star, and an equilibrium temperature near 348 K.
GJ 3998 - System
Simulates GJ 3998, an orange K-type dwarf of 0.52 solar masses, and GJ 3998 b, a 2.5-Earth-mass planet, with an orbital period of 2.7 days, at 0.030 AU from its star.
GJ 411 - System
Simulates GJ 411, an orange K-type dwarf of 0.39 solar masses, and GJ 411 b, a 2.7-Earth-mass planet, with an orbital period of 12.9 days, at 0.079 AU from its star, on an eccentric orbit (e ≈ 0.06).
GJ 414 A - System
Simulates GJ 414 A, an orange K-type dwarf of 0.65 solar masses, and GJ 414 A b, a 7.6-Earth-mass planet, with an orbital period of 50.8 days, at 0.232 AU from its star, and an equilibrium temperature near 309 K.
GJ 422 - System
Simulates GJ 422, a cool M-dwarf of 0.35 solar masses, and GJ 422 b, a 11.1-Earth-mass planet, with an orbital period of 20.1 days, at 0.111 AU from its star, on an eccentric orbit (e ≈ 0.11).
GJ 4274 - System
Simulates GJ 4274, a cool M-dwarf of 0.18 solar masses, and GJ 4274 b, a 3.0-Earth-mass planet, with an orbital period of 1.6 days, at 0.015 AU from its star.
GJ 4276 - System
Simulates GJ 4276, a cool M-dwarf of 0.41 solar masses, and GJ 4276 b, a 0.05-Jupiter-mass companion, with an orbital period of 13.4 days, at 0.082 AU from its star, on an eccentric orbit (e ≈ 0.37).
GJ 433 - System
Simulates GJ 433, a cool M-dwarf of 0.48 solar masses, and GJ 433 b, a 6.0-Earth-mass planet, with an orbital period of 7.4 days, at 0.062 AU from its star.
GJ 436 - System
Simulates GJ 436 b, an eccentric hot Neptune trailing a huge comet-like helium and hydrogen tail. The oval orbit has persisted despite strong tides. The tail extends millions of kilometers behind the planet.