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Sedna is a trans-Neptunian object and likely dwarf planet discovered by Michael Brown (Caltech), Chad Trujillo (Gemini Observatory) and David Rabinowitz (Yale University) on November 14, 2003. It is currently 88 AU from the Sun, about three times as distant as Neptune. For most of its orbit Sedna is farther from the Sun than any other known dwarf planet candidate. Eris, the largest known dwarf planet, is currently farther from the Sun than Sedna, though it is near its aphelion, or maximum distance from the Sun, while Sedna is nearing its perihilion, or minimum distance.
Sedna's exceptionally long and elongated orbit, taking roughly 12,000 years to complete, and distant perihelion (78 AU) have led to much speculation as to its origin. The Minor Planet Center currently places Sedna in the scattered disc, a group of objects sent into highly elongated orbits by the gravitational influence of Neptune. However, Sedna never comes close enough to Neptune to be affected by its gravity, leading some astronomers to conclude that it is in fact the first known member of the inner Oort cloud, or perhaps an interloper from another star system. Mike Brown claims that Sedna is the most scientifically important new object yet discovered in the regions beyond Neptune, as understanding its peculiar orbit is likely to yield valuable information about the origin and early evolution of the Solar System.
Great vid and tune m8 :D
Bahrnanagenerala 1 year ago 3
Kick ass man.
Weedpuppet 1 year ago