Gliese 832

Gliese 832 is a 2 planet system surrounded by a large icy comet belt, orbiting a red dwarf star 16 ly from Earth.  Gliese 832 C orbits on the inner edge of the habitable zone, it was once believed the planet could contain life.  The planet is a too warm and too dry for widespread life, though there are simple organisms living on the cooler night side.

The Gliese 832 system was first inhabited by a group of scientists with a 50 year mission to study the planetary system.   The colonies of the mission included orbiting stations around Gliese 832 C and B, and an enclosed ground base on planet C.  The colonies were abandoned by the scientists after only a few years for unknown reasons.  Little is known about the fate of the scientists who resided there.

Gliese 832 C
Tidally locked and orbiting close to the parent star, Gliese 832 C was world once believed could be habitable.  Though habitable world is a relative term, there is some simple life on the planet.  The dayside is a hot dry endless dessert baked under a thick carbon dioxide atmosphere.  The night side is slightly cooler, occasional rainstorms can occur on that side of the planet.

Distance: 0.162 AU

Orbit: 36 days

Temp: 320 K

Mass: 5.4 Earth

Radius: 11,542 km

Gravity: 1.65 g

Rotation: 36 days

Gliese 832 B
Gliese 832 B is an ice giant located 3.4 AU from the red dwarf. At this distance the planet is roughly the same temperature as Uranus.  The planet consists of a hydrogen/helium atmosphere covering a water and methane ice mantle.

Distance: 3.4 AU

Orbit: 9.4 years

Temp: 53 K

Mass: 0.64 Jupiter

Radius: 57882 km

Gravity: 2.48 g

Rotation: 18 hours