• Vesta
  4 Vesta
  Vesta, formally designated 4 Vesta, is one of the largest asteroids, with a mean diameter of about . It was discovered by Heinrich Wilhelm Olbers on March 29, 1807, and is named after the Roman virgin goddess of home and hearth, Vesta....
  
  , the eleventh object to be named a planet, later to be reclassified as an asteroid.
• Uranus
  Uranus
  Uranus is the seventh planet from the Sun. It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System. It is named after the ancient Greek deity of the sky Uranus , the father of Cronus and grandfather of Zeus...
  
  , the eleventh planet from the Sun upon Vesta's discovery, though this was quickly superseded by new discoveries.
• 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...
  
  , which would be the eleventh planet if the classification advocated by Alan Stern
  Alan Stern
  S. Alan Stern is an American planetary scientist. He is the principal investigator of the New Horizons mission to Pluto....
  
   et al were adopted.

See also

• First planet (disambiguation)
• Second planet (disambiguation)
• Third planet (disambiguation)
• Fourth planet (disambiguation)
• Fifth planet (disambiguation)
• Sixth planet (disambiguation)
  Sixth planet (disambiguation)
  Sixth planet refers to:*Saturn, the sixth planet from the Sun*Jupiter, the sixth planet from the Earth in the Ptolemaic geocentric cosmology-See also:*First planet *Second planet *Third planet...
  
  
• Seventh planet (disambiguation)
• Eighth planet (disambiguation)
• Ninth planet (disambiguation)
• Tenth planet (disambiguation)
• Twelfth planet (disambiguation)
  Twelfth planet (disambiguation)
  The 12th Planet is a book by Zecharia Sitchin.Twelfth planet may also refer to:*12th Planet , a Los Angeles based dubstep producer and DJ.*Nibiru , the pseudoscientific planet described in Sitchin's book...
  
  

• Trans-Neptunian object
  Trans-Neptunian object
  A trans-Neptunian object is any minor planet in the Solar System that orbits the Sun at a greater distance on average than Neptune.The first trans-Neptunian object to be discovered was Pluto in 1930...
  
  
• Trans-Neptunian objects in fiction
  Trans-Neptunian objects in fiction
  The region of the Solar System beyond Neptune contains sparse populations of small icy objects. These include the Kuiper belt, with its well-known member Pluto, and other plutoids including Haumea and Makemake...
  
  
• List of hypothetical Solar System objects
• Theoretical planetology
  Theoretical planetology
  Theoretical planetology, also known as theoretical planetary science is a branch of planetary sciences that developed in the 20th century.- Nature of the work :...