Search results
Results From The WOW.Com Content Network
Sedna has a V band absolute magnitude of about 1.8, and is estimated to have an albedo (reflectivity) of around 0.41, giving it a diameter of approximately 900 km. [14] At the time of discovery it was the brightest object found in the Solar System since Pluto in 1930.
This list contains a selection of objects 50 and 99 km in radius (100 km to 199 km in average diameter). The listed objects currently include most objects in the asteroid belt and moons of the giant planets in this size range, but many newly discovered objects in the outer Solar System are missing, such as those included in the following ...
One particularly distant body is 90377 Sedna, which was discovered in November 2003.It has an extremely eccentric orbit that takes it to an aphelion of 937 AU. [2] It takes over 10,000 years to orbit, and during the next 50 years it will slowly move closer to the Sun as it comes to perihelion at a distance of 76 AU from the Sun. [3] Sedna is the largest known sednoid, a class of objects that ...
Accurately determining its size is difficult: one indicative estimate of its radius is 350 ± 57.5 km. [7] Two objects were named as dwarf planets, under the expectation that they would prove to be so (though this remains uncertain). Haumea has two moons, HiĘ»iaka and Namaka, of radii ~195 and ~100 km, respectively. [8]
Distance from Sedna to Sun (farthest) 1.4 × 10 14 meters — Stingray Nebula: 3 × 10 14 meters 8 × 10 14 meters Petameter: 10 15 meters 10 15 meters Distance from Proxima Centauri to Alpha Centauri A 1.5 × 10 15 meters 1.5 × 10 15 meters Gomez's Hamburger — 2.5 × 10 15 meters Cat's Eye Nebula: 3.5 × 10 15 meters 2.5 × 10 15 meters ...
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate
The number of dwarf planets in the Solar System is unknown. Estimates have run as high as 200 in the Kuiper belt [1] and over 10,000 in the region beyond. [2] However, consideration of the surprisingly low densities of many large trans-Neptunian objects, as well as spectroscopic analysis of their surfaces, suggests that the number of dwarf planets may be much lower, perhaps only nine among ...
If Sedna had been captured from another planetary system that rotated in the same direction as the Solar System, then all of its population would have orbits on relatively low inclinations and have semi-major axes ranging from 100 to 500 AU. If it rotated in the opposite direction, then two populations would form, one with low and one with high ...