The size of the waves seen in the Encke gap, imaging scientists Small moon Pan (25 kilometers, or 16 miles across) resides. The Keeler gap edges also bear similarities to the scallopedĮdges of the 322-kilometer-wide (200-mile) Encke gap, where the Porous or dense says something about how it was formed and its Prometheus and Pandora - are also porous. Other moons near the outer edge of Saturn's rings - like Atlas, Moonlet might be quite porous, like an orbiting icy rubble pile. Yields information on its physical makeup. AnĮstimate of the moon's mass, along with a measure of its size, Imaging team member from Queen Mary, University of London. How rings and moons affect one another," said Dr. Will allow us to determine its mass and test our understanding of "The obvious effect of this moon on the surrounding ring material In the center of the Keeler gap, awaiting discovery. In Saturn's F ring and the Encke gap led imaging scientists toĬonclude that a small body, a few kilometers across, was lurking The similarities of the Keeler gap features to those noted Of peculiar spiky and wispy features in the Keeler gap's outerĮdge. Orbital distance from Saturn after last July's sighting of a set Imaging scientists had predicted the new moon's presence and its Main ring system, as do the two F ring shepherd moons, Prometheus The other is Pan, 25 kilometers (16 miles) across, which S/2005 S1 is the second known moon to exist within Saturn's More Cassini observations will be needed toĭetermine whether the moon's orbit around Saturn is circular or Orbits approximately 136,505 kilometers (84,820 miles) from theĬenter of Saturn. The Space Science Institute in Boulder, Colo. Joseph Spitale, imaging team associate and planetary scientist at We've seen so far of its motion suggests that it is very near theĮxact center of the gap, just as we had surmised," said Dr. "It's too early to make out the shape of the orbit, but what Half the light falling on it - a brightness that is typical of Object is about 7 kilometers (4 miles) across and reflects about Which is also the outer edge of the bright main rings. The Keeler gap is located aboutĢ50 kilometers (155 miles) inside the outer edge of the A ring, The images show the tiny object in the center of the Keeler gapĪnd the wavy patterns in the gap edges that are generated by the Measure of the moon's size and brightness. Later, an even closer view was obtained, which has allowed a Its climb to higher inclinations in orbit around Saturn. Lapse sequence of images taken on May 1, 2005, as Cassini began The moon, provisionally named S/2005 S1, was first seen in a time. Image credit: NASA/JPL/Space Science Institute. Image right: Cassini's confirmation that a small moon orbits within the Keeler gap in Saturn's rings is made all the more exciting by this image, in which the disk of the 7 kilometer-wide body (4-miles) is resolved for the first time.
#ATLAS SATURN MOON MOVIE#
A new image and movie show the new moonĪnd the waves it raises in the surrounding ring material. Viewing, which began last month, the Cassini spacecraft hasĬonfirmed earlier suspicions of an unseen moon hidden in a gap in In a spectacular kick-off to its first season of prime ring
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