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: The Judgment of Sutekh) The Fourth Doctor claimed in 1911 that this event, some seven thousand years earlier, had begun Sutekh's "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)