K37 Gem 5
From Tardis Wiki, the free Doctor Who reference
K37J5 is the designation of a Black hole on the very edge of Mutter's Spiral, it is mentioned in the Scriptures of the Valtino as a mighty Demon which was tricked into devouring the Planet Krop Tor only to spit it out because it was poison. in the 44th century the New British Empire sent two expeditions to the vicinity of the Black hole in order to find the planet Krop Tor. (DW: The Impossible Planet, The Satan Pit)
