List of planets
Encyclopedia

In the Solar System

According to current definitions, there are eight planet
Planet
A planet is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.The term planet is ancient, with ties to history, science,...

s in the Solar System
Solar System
The Solar System consists of the Sun and the astronomical objects gravitationally bound in orbit around it, all of which formed from the collapse of a giant molecular cloud approximately 4.6 billion years ago. The vast majority of the system's mass is in the Sun...

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Dwarf planets

The Solar System also contains five identified dwarf planet
Dwarf planet
A dwarf planet, as defined by the International Astronomical Union , is a celestial body orbiting the Sun that is massive enough to be spherical as a result of its own gravity but has not cleared its neighboring region of planetesimals and is not a satellite...

s, which are not considered planets:
  • Ceres
  • Pluto
  • Makemake
  • Haumea
  • Eris
    Eris (dwarf planet)
    Eris, formal designation 136199 Eris, is the most massive known dwarf planet in the Solar System and the ninth most massive body known to orbit the Sun directly...


  • For a complete list of all known spherical objects in the Solar System (including planets, dwarf planets, moons and the Sun), together with their physical and orbital properties, see: List of gravitationally rounded objects of the Solar System
  • For a list of objects in our Solar System that have been or are believed to exist, but either have not been proven or have been disproven, see: List of hypothetical Solar System objects

Orbiting other stars

  • For a list of planets orbiting other stars, see: List of extrasolar planets

  • For a list of extrasolar planets which have yet to be confirmed or have been disproven, see: List of unconfirmed extrasolar planets

Fictional or non-scientific planets

  • For a list of supposed planets not based on scientific evidence, see: Planetary objects proposed in religion, astrology, ufology and pseudoscience
  • For a list of planets in fiction see: Planets in science fiction
    Planets in science fiction
    Planets in science fiction are fictional planets that appear in various media, especially those of the science fiction genre, as story-settings or depicted locations.-History:...

  • For a list of fictional planets within the Solar System, see: Fictional planets of the Solar System

See also

  • List of planetary systems
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