Bandraginus V

Bandraginus V was a Vegan shipyard. (PROSE: First Frontier) It had about a billion inhabitants, the Fourth Doctor calling it "a planet of a thousand million souls". Some time before its engulfment of Calufrax, Zanak materialised around Bandraginus V, mining it for all its mineral wealth, including Oolion, an element only found on Bandraginus V and Qualactin. Following this, the Captain super-compressed it and added Bandraginus V to his collection. (TV: The Pirate Planet)

Behind the scenes
The Name "Bantraginus V" is likely a reference to "", the home for one of the key ingredients in in Douglas Adams's The Hitchhiker's Guide to the Galaxy. TV: The Pirate Planet was Douglas Adams' first contribution to Doctor Who.