Sedna (dwarf planet) - Wikipedia
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 …
Sedna | Trans-Neptunian Object, Dwarf Planet & Kuiper Belt
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 …
Scientists Eye Bold New Mission to Mysterious Planet Sedna, at …
Jun 30, 2025 · Scientists are looking at two breakthrough propulsion technologies that might let us reach Sedna, an icy, reddish dwarf planet far beyond the orbit of Pluto, before it slips away …
Sedna Facts - The Planets
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 …
Sedna Is So Distant, We're Not Even Sure It's a Dwarf Planet
Jun 14, 2023 · Sedna, named for the Inuit goddess of the deep sea, is the most distant object known to orbit the sun and is three times farther from Earth than Pluto.
Sedna • Atlas of Space
6 days ago · 90377 Sedna Dwarf Planet 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 …
Sedna, the Coldest and Farthest Body in the Solar System
Sedna is one of the transneptunian objects that orbit the sun beyond Neptune in an extremely cold area of the solar system. Scientists believe that it originated from the early solar system.
Scientists Plan Bold Journey to a Frozen World Beyond Pluto
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. …
Sedna: An Extreme Orbit at the Edge of the Solar System | Astronoo
Oct 7, 2025 · Sedna moves in an intermediate zone of the Solar System, located between the Kuiper Belt and the Oort Cloud. This unique position makes it a key object for understanding …
Asteroid Sedna | Space Reference
Sedna is a dwarf planet whose orbit extends beyond the orbit of Neptune. NASA JPL has not classified Sedna as potentially hazardous because its orbit does not bring it close to Earth.