TerraGenesis Wiki
TerraGenesis Wiki

Terraformed Sedna with stats and cities.

Orbiting at almost three times the distance of Neptune's orbit from the Sun, Sedna is quite large for its orbital neighborhood and easily recognizable as one of the reddest worlds in the outer Solar System.

With an orbit taking 11,400 years to complete, many scientists believe that Sedna was actually captured from a passing solar system by our Sun's gravity, or even that its orbit may be evidence for a large planet beyond the orbit of Neptune.


Sedna is a reddish dwarf planet that is much farther than Neptune, and it is extremely cold and has no atmosphere. It has no natural Satellites.

Sedna is the coldest world in TerraGenesis.


Sedna is a very tiny planet, so make sure to keep your cities as close to each other as possible to leave room to place more. Firstly, use Ice Launchers to get rid of ice. Because Sedna starts with 0 Pa, there’s no need to increase the oxygen before the ice is gone. For the Temperature, it is highly recommended to use the Soletta, while increasing pressure to habitable levels with Spaceports. After that, you can use Kelp Farms to increase oxygen while stabilizing pressure before you reach habitable oxygen. The last 2 stats are pretty straightforward, so I won’t explain them here.


• Sedna is the farthest planet from the Sun (if you count dwarf planets) in our solar system. It was found in November 14, 2003 by Michael Brown, David Rabinowitz, and Chad Trujillo. More information here.

• Because Sedna is so far away, it receives a very small amount of the sun's light and heat. Even if we heat this world to habitable temperatures, it will still be nearly pitch-black all the time.

• Sedna's orbit is so elliptical that when it get so far away, it is it will reach about 900 AU from the sun. If its path crosses Ophadamia's orbit, it might become a moon of it!

Terrestrial Planets Mercury · Venus · Earth · Moon (Luna) · Mars
Moons of Gas Giants Moons of JupiterMoons of SaturnMoons of UranusMoons of Neptune
Moons of Jupiter Io · Europa · Ganymede · Callisto
Moons of Saturn Tethys · Dione · Rhea · Titan · Iapetus
Moons of Uranus Miranda · Ariel · Umbriel · Titania · Oberon
Moons of Neptune Triton
Dwarf Planets Ceres · Pluto · Charon · Makemake · Eris · Sedna
TRAPPIST-1 Damu · Aja · Huanca · Ruaumoko · Asintmah · Ostara · Aranyani
Fictional Planets Bacchus · Pontus · Lethe · Ragnarok · Boreas
Historical Earths Vaalbara · Rodinia · Cambria · Cretacea · Dania · Chibania · Ultima
Random Planets