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Ss:Sedna

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Solar System Scratchpad

[Boiler Plate]

Dwarf planet candidate orbiting in a detached orbit around the Sun, possibly the first Inner Oort Cloud object discovered. Orbit is not affected by Neptune. Detached objects with perihelions greater than 75AU have been dubbed "Sednoids" after the discovery of the second one. Could be indicative of stars effects when they were much closer than they are today when the Sun was still in a cluster. Alternatively, the fact its eccentricity has not reduced over time could point to a present day star in the Solar System. It could also be a captured dwarf planet from another star, or have been moved by a passing star. Its year is 12,000 years and size thought to be two thirds that of Pluto's. It will reach perihelion in 72 years. Its rotation was initially thought to be the slowest in the Solar System other than Venus or Mercury, which was thought to be due to a close moon, but none have been found. It was later found to have a rather typical period of 10 hours. Its name was announced before it was confirmed and numbered, but the IAU allowed it to be used officially. It is one of the reddest objects known in the solar system. It was the furthest object found prior to the discovery of Eris. When discovered, was the largest body beyond discovered since Pluto, half way between Quaoar and Pluto.

Ss:Sedna Web PagesEdit

Ss:Sedna In the NewsEdit

Most Distant Object in Solar System Discovered (Mar 2004)Edit

Surprisingly No Moon Detected (Apr 2004)Edit

Could Be Result of Passing Star (Dec 2004)Edit

Could Point to Binary Star (Apr 2006)Edit

Second Sednoid Discovered (2014)Edit

See also 2012 VP113

Feature ArticlesEdit

Eris Could Be as Small as Pluto (Dec 2010)Edit

See Eris, Pluto, Haumea, Makemake, Sedna

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