dwarf planet

dwarf planet
As recognized by the International Astronomical Union, any body which has achieved hydrostatic equilibrium (is reasonably spherical), orbits the sun, and has not "cleared its neighbourhood" (as opposed to a planet).
See Also: minor planet, major planet, giant planet, rocky planet

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  • dwarf planet — ˌdwarf ˈplanet 8 [dwarf planet] noun a round object in space that goes around the sun but is not as large as a planet and does not clear other objects from its path • the dwarf planets Pluto, Ceres, Eris, Makemake and Haumea • These bodies have… …   Useful english dictionary

  • Dwarf planet — Not to be confused with Minor planet. Ceres as seen with the Hubble Space Telescope. It is the only dwarf planet in the asteroid belt …   Wikipedia

  • dwarf planet — ▪ astronomy  body, other than a natural satellite (moon), that orbits the Sun and that is, for practical purposes, smaller than the planet Mercury yet large enough for its own gravity to have rounded its shape substantially. The International… …   Universalium

  • dwarf planet — /dwɔf ˈplænət/ (say dwawf planuht) noun a celestial body in orbit around the sun which exerts sufficient gravity on itself to achieve a rounded shape but which has not cleared the neighbourhood of its orbit of asteroids, comets and space debris,… …  

  • Ceres (dwarf planet) — For other uses of the name Ceres , see Ceres. Ceres   Ceres as seen by Hubble Space Telescope (ACS). The …   Wikipedia

  • Eris (dwarf planet) — Eris   Eris (centre) and Dysnomia (left of centre). Hubble Space Telescope …   Wikipedia

  • Makemake (dwarf planet) — Makemake Makemake as seen by the Hubble Space Telescope Discovery Discovered by …   Wikipedia

  • Haumea (dwarf planet) — Infobox Planet bgcolour = #FFFFC0 name = Haumea caption = Artist s conception of Haumea, with its moons, Hiokinaiaka and Namaka discovery = yes discoverer= Brown et al. ; Ortiz et al. (neither official) discovered=2004 December 28 (Brown et al.… …   Wikipedia

  • List of dwarf planet candidates — At present, the International Astronomical Union classifies five objects as dwarf planets: Ceres, Pluto, Eris, Haumea, and Makemake, though dozens of others are thought likely to be classified as such in the future. The qualifying feature of… …   Wikipedia

  • Astronomers Reclassify Pluto as a Dwarf Planet — ▪ 2007  “What s in a name? That which we call a rose by any other word would smell as sweet.” These lines, spoken about Romeo by Shakespeare s Juliet, encapsulated the debate that peaked in 2006 over the meaning of the word planet. The original… …   Universalium

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