Sedna (minor-planet designation: 90377 Sedna) is a dwarf planet in the outermost reaches of the Solar System, orbiting the Sun far beyond the orbit of Neptune. It was discovered in 2003, and …

Dec 15, 2025 · Sedna, small body in the outer solar system that may be the first discovered object from the Oort cloud. Sedna was discovered in 2003 by a team of American astronomers at …

Nov 14, 2003 · Sedna is a minor planet, or planetoid, that lies beyond the Kuiper Belt. Its home reaches to the far edges of the solar system, making it one of the most distant space bodies …

Jun 14, 2023 · Way out past the distant orbit of dwarf planet Pluto, Sedna revolves around the sun in a highly eccentric and elongated orbit and while it has the necessary characteristics, …

Based on its brightness and the way it reflects light, Sedna is probably between 1319.942 to 2951.481 kilometers in diameter, making it the largest asteroid/dwarf planet, very roughly …

Jun 28, 2025 · In the frigid darkness beyond Pluto, where sunlight is a faint whisper and temperatures drop to an unimaginable −240°C, a lonely, crimson world drifts through the void. …

6 days ago · A distant dwarf planet with an extremely elongated 11,400-year orbit that takes it between 76 and 937 AU from the Sun, making it one of the most remote known objects in the …

Explore Sedna, the distant solar system object with a unique orbit and icy composition. Discover its origins, significance, and scientific mysteries in this in-depth guide.

90377 Sedna (2003 VB12) is a Dwarf Planet, located in the Kuiper Belt, an area of space past the orbit of Neptune. It has been categorised as a Trans-Neptunian object. Sedna's name and …

Oct 7, 2025 · Discovered in 2003 by Mike Brown (1965-), Chad Trujillo (1973-), and David Rabinowitz (1958-), Sedna is a reddish dwarf planet located at a distance ranging from 76 to …