Inner moon
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In astronomy, an inner moon or inner natural satellite is a natural satellite following a prograde, low-inclination orbit inwards of the large satellites of the parent planet. They are generally thoug
Jupiter's inner moons and rings
Diagram of Neptune's inner satellites.
Jupiter family
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Prometheus (moon)
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Prometheus is an inner satellite of Saturn. It was discovered on 24 October 1980 from images taken by the Voyager 1 probe, and was provisionally designated S/1980 S 27. In late 1985 it was officially
Inner moon
…Atlas – shepherd satellite of the outer edge of Saturn's A Ring Prometheus – inner shepherd satellite of Saturn's narrow F Ring Pandora…
Prometheus image from Cassini (December 26, 2009)
Prometheus pulling material from the F Ring
Prometheus tugging kinks into the F Ring
Cassini image (with moon's Saturn-facing end at lower right) reveals a surface covered with a blanket of fine material.