
XO-2 S - System
Simulates XO-2 S, a Sun-like G-type star of 0.98 solar masses, and XO-2 S b, a 0.26-Jupiter-mass companion, with an orbital period of 18.2 days, at 0.135 AU from its star, on an eccentric orbit (e ≈ 0.15).
Exoplanets
Three-planet architectures — from compact super-Earth chains to mixed systems with an inner rocky world and outer giants. Three-body dynamics introduce secular resonances and chaos that two-planet systems cannot.

Simulates XO-2 S, a Sun-like G-type star of 0.98 solar masses, and XO-2 S b, a 0.26-Jupiter-mass companion, with an orbital period of 18.2 days, at 0.135 AU from its star, on an eccentric orbit (e ≈ 0.15).

Simulates YZ Cet, a cool M-dwarf of 0.14 solar masses, and YZ Cet b, a 0.7-Earth-mass planet, with an orbital period of 2.0 days, at 0.016 AU from its star, and an equilibrium temperature near 471 K, on an eccentric.

Simulates rho CrB, a Sun-like G-type star of 1.00 solar masses with 3 confirmed companions (rho CrB e, rho CrB b, rho CrB c) on NASA archive orbits.

Simulates Tau Ceti, the nearest single Sun-like star. Its compact super-Earths make this neighbor a long-standing target in the search for nearby worlds.

Simulates Upsilon Andromedae, the first multi-planet system found around a main-sequence star. Three giants on mutually tilted, eccentric orbits tug one another.