It is also highly reflective, responsible for more than half of the reflect light by Uranus’s rings. To date (2010), astronomers have discovered a total of 13 rings, with radii ranging from 24,000 miles to about 61,000 miles compared to Uranus' own radius of <16,000 miles. (The surface temperature of Uranus gets as low as 47 Kelvin, so it's even cooler.). A 2016 study suggested that the rings of Uranus, Saturn and Neptune may be the remnants of Pluto-like dwarf planets that strayed too close to the … It was given the name Uranus, after the Greek god of the sky Ouranos. Notes: * Negative orbital periods indicate a retrograde orbit around Uranus (opposite to the planet's rotation). Documentation . Name Request Form. The first of Uranus' 13 rings was first discovered in 1977. The spacecraft was 1.12 million kilometers (690,000 miles) away when its narrow-angle camera obtained this clear-filter view. The rings of Uranus are thought to be very young, not more than 600 million years old. About . The ring system, while less impressive than Saturn's, is more complex than those of Jupiter or Neptune. Advanced Search. It is the only planet whose name is derived directly from a figure of Greek mythology. He argued that planets should follow the tradition of Roman gods, and in Roman mythology, Uranus … Previous. That Uranus had a ring system was discovered only in 1977. The image on the right is a composite of four images acquired by Voyager 2 in 1985 showing three moons of Uranus: Umbriel, lower left; Miranda, bottom right; Ariel, top right. : 0.335034: 1986 2: Uranus VII: Ophelia Planetary Names: Ring and Ring Gap Nomenclature Home . It also confirmed that the rings are really weird, when compared to those around other planets. Images and GIS Data. Nomenclature . Home. Jupiter, Saturn, Uranus, and Neptune all have rings. Sparkling ring systems may be the best kept secret in solar system. Unlike other ring systems that were given proper names, Greek letters were primarily used to name the rings of Uranus, particularly the main rings. The mean apparent magnitude of Uranus is 5.68 with a standard deviation of 0.17, making it near the limit of naked eye visibility. Voyager 2 discovered 10 more moons in 1986, bringing the total to 15. Because it was a thermal image, for the first time the team could learn the temperature of the rings: just 77 Kelvin, the boiling point of liquid nitrogen at standard atmospheric pressure. The rings of Uranus are planetary rings (circles of rock and dust) that go around the planet Uranus.There are 11 rings in total. Rings of Uranus Photojournal: PIA01981 Source: NASA/JPL Published: June 19, 1999 This Voyager 2 image of the Uranian rings delta, gamma, eta, beta and alpha (from top) was taken Jan. 23, 1986. ε ring (epsilon) – Is the brightest and the densest of the 13 rings of Uranus. Uranus, the name that eventually stuck, was first suggested by Johann Bode. At the time when this image was collected, only five moons of Uranus were known. In order of increasing distance from Uranus, they are: 1986U2R/ζ, 6, 5, 4, α, β, η, γ, δ, λ, ε, ν and μ. Order Name Image Mean diameter (km) Mass (kg) Orbital period (day) Discovery date 1: Uranus VI: Cordelia: 42 ± 6: 5.0 × 10 16?
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