Mar 26, 2014 · Explore related images: 136199 Eris (2003 UB313), 90377 Sedna (2003 VB12), Infographic, Miscellaneous trans-Neptunian objects, Pluto, Small bodies, Trans-Neptunian objects, Worlds.

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. Discovered in 2003, the frigid planetoid is one of the reddest known among Solar System bodies.

Eris is the ninth-most massive known object orbiting the Sun and the sixteenth-most massive overall in the Solar System (counting moons). It is also the largest known object in the Solar System that has not been visited by a spacecraft.

Dysnomia, Eris's only known satellite, is approximately 150 kilometers in diameter and orbits Eris about every sixteen days. The discovery of Eris in 2005 reignited debates about the classification of celestial bodies and ultimately led to Pluto being reclassified as a dwarf planet. ... The researchers’ discovery in November 2003 of Sedna ...

Jan 31, 2025 · Sedna’s 11,400-year orbit carries it to an aphelion (its farthest point from the Sun) well beyond the heliopause, the region near the solar system’s periphery where the Sun cedes gravitational...

The orbits and positions of Jupiter, Saturn, Uranus, Neptune, Pluto, Eris, Sedna, and comets Halley and Hale-Bopp are also shown. The orbits of objects beyond Neptune are drawn using two slightly different colors; the brighter color is used for the …

At its aphelion, Sedna orbits the Sun at a mere 1.3% of Earth's orbital speed. When Sedna was discovered it was 89.6 AU from the Sun approaching perihelion, and was the most distant object in the Solar System observed. Sedna was later surpassed by Eris (later by Farout then FarFarOut), which

It will be more remote than both Sedna and Eris by 2045, and will reach aphelion (farthest from the Sun, 100.79 AU) in 2130; its orbit’s semi-major axis is 67.21 AU with an eccentricity of 0.500. It takes 550.98 years to orbit the Sun.

Feb 10, 2021 · A team of astronomers, including associate professor Chad Trujillo of Northern Arizona University's Department of Astronomy and Planetary Science, have confirmed a planetoid that is almost four...

Mar 26, 2014 · This diagram shows the positions of distant objects Sedna and 2012 VP113 with respect to those of Saturn, Uranus, Neptune, and Pluto on March 26, 2014.…