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Sedna
Sedna.png
Astrographical

Star, position:

Sol, Trans-Neptunian

Physical

Diameter:

Between 1,200 and 1,600 km (Pre-conversion)

Length of day:

10 hours (Pre-conversion)

Orbital period:

11,400 years (Pre-conversion)

Surface temperature:

-240°C. (Pre-conversion)

Societal

Population:

Fallen (Formerly)
Vex

 

Sedna is a Dwarf Planet located on the outermost reaches of Sol, located beyond even the Kuiper Belt.

Overview

The Fallen of the House of Onyx would briefly set up a den on the world to rebuild after a conflict with the House of Scar that left them with grievous losses, including the destruction of their Prime Servitor and death of their Archon.

At some point after, the Vex of the Sol Collective would arrive on the Dwarf Planet under the command of Stioceon, Planetary Core. Using the Corridors of Time, they retroactively inserted themselves into the history of Sedna, appearing in the Golden Age to speed up the process of converting the exoplanet into a Machine World.

Many years later, after the death of the Witness, Echoes created from its darkness, the memories of its victims and the Traveler's Light were ejected into the galaxy. One Echo would crash on Sedna where Stioceon's Vex would discover it. After spending a year studying the object, Stioceon would introduce the Echo into its own Radiolaria, allowing it to wield paracausal power and bestow it to its Vex, now dubbed the Sol Convergent.

When the Guardians arrived on Sedna following a distress signal coming from the planet, they discovered that it had been trapped in a timeloop. With the aid of a version of Praedyth, they sought to destroy Stioceon and break the timeloop.

Locations

  • Erebus flats
  • Frozen mantle
  • Sedna Core

Trivia

  • As of the release of Convergent Pattern, Sedna is currently the furthest location Guardians have explored.

List of appearances