**Exoplanet Systems** contains simulations of exoplanet systems in which the orbits and interactions of the exoplanets are in some way interesting or unusual.

Gliese 581 shows the Gliese 581 planetary system.

Gliese 876 shows the Gliese 876 planetary system.

HD 10180 shows the HD 10180 planetary system.

HR 8799 shows the HR 8799 planetary system.

Kepler-9 shows the Kepler-9 planetary system.

Kepler-36 shows the Kepler-36 planetary system.

Kepler-90 shows the Kepler-90 planetary system.

Kepler-223 shows the Kepler-223 planetary system.

Tau Ceti shows the Tau Ceti (HD 10700) planetary system.

TRAPPIST-1 shows the TRAPPIST-1 planetary system.

Upsilon Andromedae shows the Upsilon Andromedae planetary system.

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