S/2009 S 1

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The bright dot with a long shadow in the center is S/2009 S1. The Cassini Division is on the right.

S/2009 S 1 is a 'propeller moonlet' of Saturn orbiting at a distance of approximately 117,000 kilometres (73,000 mi), in the outer part of Saturn's B Ring, and with an approximate diameter of 300 meters (980 ft).[1] It was discovered by the Cassini Imaging Team on 26 July 2009.[2] The moonlet was noticed during the 2009 equinox event by an approximately 36-kilometer-long shadow that it cast on Saturn's B ring. S/2009 S 1 protrudes approximately 150 metres (490 ft) above the ring.[3] The image was taken approximately 296,000 kilometres (184,000 mi) from Saturn.[1]

History

Discovery

S/2009 S 1 was first identified by the Cassini Imaging Team[2] on 26 July 2009. It was discovered during 2009's equinox by an approximately 36 kilometres (22 mi) long shadow that it cast on the planet Saturn's B ring.

PIA11665 moonlet in B Ring cropped.jpg

See also

References

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