* Placet — A planet that revolves in a figure-8 orbit around the twin suns Argyle I and Argyle II, and is subject to several different spatio-temporal anomalies in Fredric Brown's Placet is a Crazy Place.

Placet is a fictional planet that appeared in the Science Fiction story Placet is a Crazy Place by Fredric Brown.

Placet is composed of both ordinary and heavy matter.

Placet revolves faster than the speed of sound in a figure eight pattern around two stars, Argyle I and Argyle II.

This field allows Placet to be able to eclipse itself twice at the same time, run into itself every 40 hours and chase itself out of sight.