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Along with Epimetheus, Janus acts as a shepherd moon, maintaining the sharp outer edge of the A Ring in a 7:6 orbital resonance. The effect is more obvious when the more massive Janus is on the resonant (inner) orbit.
Janus is a potato-shaped moon with a mean radius of 55.6 miles (89.5 kilometers) and dimensions of 122 x 119 x 93 miles (196 x 192 x 150 kilometers, respectively). Janus is extensively cratered with several craters larger than 19 miles (30 kilometers).
Jano es un satélite natural de Saturno también conocido como Saturno X . Recibe su nombre del dios romano Jano . Descubrimiento y órbita. Jano ocupa la misma órbita que la luna Epimeteo.
The Janus-Epimetheus Dance. There is only a 50-km difference between the orbits that Janus and Epimetheus follow around Saturn. Being closer to the parent planet, the moon in the inner orbit travels faster than the one on the outer orbit and completes a trip on its orbit faster.
Along with Janus, Epimetheus acts as a shepherd moon, maintaining the sharp outer edge of the A Ring in a 7:6 orbital resonance. The effect is more obvious when the more massive Janus is on the resonant (inner) orbit.
6 de ene. de 2014 · Cassini's narrow angle camera captures Saturn's tiny irregular moon Janus surrounded by the vast, dark expanse of the outer solar system. Janus (111 miles, or 179 kilometers across) shares an orbit with the moon Epimetheus; the two moons change orbital positions roughly every four years.
Janus is a co-orbital moon that helps shape the A ring of Saturn. Learn about its mass, radius, density, orbit, rotation, and more facts on this web page.
