Phaester Osiris

Phaester Osiris, also called the Throneworld (AUDIO: The Ship of a Billion Years) and stylised as Phæster Osiris, (PROSE: The Sands of Time) was the home planet of the Osirans. It was a hot and dusty planet, (PROSE: Legacy) located in the constellation of Orion (PROSE: The Sands of Time) and having one moon, Beta Osiris, (PROSE: Scarab of Death) as well as the energy production facility Amenthes, orbiting it. (COMIC: Old Girl) Signs of the Osirans' civilisation could be found on the planet, such as the especially tall pyramids. (PROSE: The Dark Path)

Circa 5000 BC, Phaester Osiris was ruled by Horus and Sutekh. (TV: Pyramids of Mars) According to one account, after the Osirian Court slipped its moorings and cut itself off from history, its homeworld was considered a liability, so Sutekh destroyed it. (AUDIO: Ozymandias) According to another account, the Fourth Doctor claimed in 1911 that the destruction of Phaester Osiris some seven thousand years earlier was part of Sutekh leaving "a trail of havoc across half the galaxy". (TV: Pyramids of Mars)

Other accounts claimed that Phaester Osiris existed into the 40th century. (PROSE: Scarab of Death, Legacy) In 3985, the Braxiatel Collection funded an expedition to investigate the planet. Professor Rhukk helped discover the Horun ruins. (PROSE: Legacy)