Hutri is a warm, water-rich ice giant with an atmosphere of hydrogen, helium, methane, and other volatile compounds. Its extreme magnetic field and intense geological activity are accompanied by two rings and an ocean moon with a possible subsurface ocean.
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
Moon 2rings0.0071% - 3.4 radii
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
Moon 3recedingOcean world0.18% - 13.6 radii
Outside the synchronous orbit: slowly receding, like Luna (~cm per year).
Tidal braking locked the planet to its moon: one face forever moonward.
A thin tidal-warmed subsurface ocean may exist, but conditions are marginal (27/100).
Moon 4merged7.9% - 38.9 radii
Merged with an adjacent moon: too close for both to hold a stable orbit.
Moon 5stable0.0040% - 74.5 radii
Small and distant: a quiet, stable companion.
+5 temperature: large moon stabilizes the axial tilt - steady seasons+10 geology: tidal flexing sustains geologic activity+5 magneticField: a large close moon may help stir the core dynamo (speculative)