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’s 11,400-year orbit just opened a rare exploration shot - MSN
Astronomers classify Sedna as a dwarf planet in the outermost reaches of the Solar Syste, and its minor planet designation, 90377 Sedna, reflects how far it sits from the familiar architecture of ...
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 …
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 Is So Distant, We're Not Even Sure It's a Dwarf Planet
Jun 14, 2023 · Sedna, spherical in shape and with a distinct orbit, fits this description and is generally considered by astronomers to be a dwarf planet candidate, yet it shares its orbital …
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.
Sedna: An Extreme Orbit at the Edge of the Solar System | Astronoo
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 …
90377 Sedna Asteroid Mass, Discovery and other Facts
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 …