Planets of indeterminate existence

Being a cataloguing of planets whose existence has been claimed, but are as yet unproved or have not been located by any means of astronomical calculation and observation.

Endo-Solar Planets

 * Etraa or Ejii, "somewhere out beyond Jupiter"
 * Clarion

Extra-Solar Planets

 * Serpo, Zeta Reticuli
 * Hercólubus, Tilo