In their respective pages, the Planets are listed along with their basic properties such as the year of planet’s discovery, mass, radius, orbital period, semi-major axis, eccentricity, inclination, longitude of periastron, time of periastron, maximum time variation, and time of transit, including all error range values.
United Federation of Planets | The Planets | Encyclopaedia of Islam | planets | Encyclopaedia Judaica | Two Planets | Planets of 'Saga of the Seven Suns'#Rhejak | Encyclopaedia Biblica | Battle of the Planets | Toronto Planets | Planets | Jack Names the Planets | Everyman's Encyclopaedia | Encyclopaedia of Religion and Ethics | Doctor Who: Devils' Planets - The Music of Tristram Cary | Digable Planets | Cosmos: War of the Planets | Chambers's Encyclopaedia | Australian Encyclopaedia | 1911 edition of the ''Encyclopaedia Britannica'' |