Sedna

Sedna was a planetoid of the Sol System, described as a "false" and "nemesis world". Following the Age of Strife, it was ruled by an unknown kind of Xenos.^[1]

During the early Great Crusade, Sedna was attacked by eight full Space Marine Legions. With its Xenos rulers dispatched through unknown psychic means, Sedna fell into silence and has since been lost by the Imperium.^[1] As for Sedna's Xenos, the Imperium deliberately destroyed all records of them.^[2]

Trivia

The following information is not to be regarded as officially sanctioned and/ or is not written from an in-universe point of view. A detailed explanation of the term "Trivia" as used in the Lexicanum can be found here.

• 90377 Sedna is a small dwarf planet at the very edge of the solar system.

Sources

• 1: The Horus Heresy Book Eight - Malevolence, pg. 16
• 2: Journal Tactica: Skitarii, pg. 17