Epsilon Ring
The brightest, most prominent, and one of the densest rings surrounding Uranus, located at an average distance of approximately 51,149 kilometers from the planet's center.
The Epsilon ring is the outermost of Uranus's nine classical narrow rings and was discovered through stellar occultation observations in 1977.
Unlike most planetary rings, its orbit is noticeably elliptical, causing both its distance from Uranus and its radial width to vary around the planet.
The ring's width ranges from approximately 20 kilometers at its closest approach to Uranus to approximately 96 kilometers at its greatest distance.
Its sharply defined boundaries are maintained in part through gravitational interactions with two small moons, Cordelia and Ophelia, which orbit just inside and outside the ring, respectively.
These moons are commonly described as shepherd satellites because their gravitational influences help confine the ring's particles.
The Epsilon ring is one of the most extensively studied components of Uranus's ring system and is particularly important for understanding the dynamics of narrow, eccentric planetary rings.
The Epsilon ring is the outermost of Uranus's nine classical narrow rings and was discovered through stellar occultation observations in 1977.
Unlike most planetary rings, its orbit is noticeably elliptical, causing both its distance from Uranus and its radial width to vary around the planet.
The ring's width ranges from approximately 20 kilometers at its closest approach to Uranus to approximately 96 kilometers at its greatest distance.
Its sharply defined boundaries are maintained in part through gravitational interactions with two small moons, Cordelia and Ophelia, which orbit just inside and outside the ring, respectively.
These moons are commonly described as shepherd satellites because their gravitational influences help confine the ring's particles.
The Epsilon ring is one of the most extensively studied components of Uranus's ring system and is particularly important for understanding the dynamics of narrow, eccentric planetary rings.
"The Epsilon ring is the brightest and most easily observed ring of Uranus, with its elliptical orbit and sharply defined boundaries maintained partly through gravitational interactions with the moons Cordelia and Ophelia."
Epsilon Ring by SpaceLover1977 October 25, 2026
