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Sedna (minor-planet designation: 90377 Sedna) is a dwarf planet in the outermost reaches of the Solar System, orbiting the Sun beyond the orbit of Neptune. Discovered in 2003, the planetoid's surface is one of the reddest known among Solar System bodies.
Sedna (Inuktitut: ᓴᓐᓇ, romanized: Sanna, previously Sedna or Sidne) is the goddess of the sea and marine animals in Inuit religion, also known as the Mother of the Sea or Mistress of the Sea. The story of Sedna, which is a creation myth, describes how she came to rule over Adlivun , the Inuit version of the underworld .
This minor planet was numbered by the Minor Planet Center on 10 October 2019 (M.P.C. 117077). [14] In June 2020, it was formally named Leleākūhonua 'it flies until land appears'. [15] [16] The name was suggested by students in the Hawaiian-language program A Hua He Inoa.
The newly-found ETNO joins Sedna, a dwarf planet believed to be about 250 AU from the sun, as objects residing outside the Kuiper Belt, where Pluto resides, according to Space.
One particularly distant body is 90377 Sedna, which was discovered in November 2003.It has an extremely eccentric orbit that takes it to an aphelion of 937 AU. [2] It takes over 10,000 years to orbit, and during the next 50 years it will slowly move closer to the Sun as it comes to perihelion at a distance of 76 AU from the Sun. [3] Sedna is the largest known sednoid, a class of objects that ...
He has been referred to by himself and by others as the man who "killed Pluto", [3] [4] [5] because he furthered Pluto's being downgraded to a dwarf planet in the aftermath of his discovery of Eris and several other probable trans-Neptunian dwarf planets. He is the author of How I Killed Pluto and Why It Had It Coming, published in 2010.
Sedna may refer to: Sedna (mythology), the Inuit goddess of the sea; Sedna (dwarf planet), a trans-Neptunian dwarf planet; Sedna (beverage), a tonic wine, formerly made in Belfast; Sedna (database), a native XML database; Doriprismatica sedna, a species of nudibranch; Sedna Finance, a structured investment vehicle; Sedna Planitia, a landform on ...
The first sentence of the article states directly "Sedna (minor-planet designation 90377 Sedna) is a dwarf planet " but the classification section states that the official classification body considers it to be a "scattered object", but also says that some consider it a new class of object, and that it is also expected to meet the requirements ...