"a small planet in the vicinity of Betelgeuse"

Comparing the very ordinary town of Guildford with a planet somewhere near Betelgeuse is classic Adams technique.  Guildford is a large town in Surrey, a county in southern England.  Betelgeuse is one of the brightest stars visible from earth, located around 640 lightyears away.

Public DomainGuildford - Credit: S Knights