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 about 117,000 kilometres (73,000 mi), in the outer part of Saturn's B Ring, and with an approximate diameter of 400 meters (1,300 ft). It was discovered by the Cassini Imaging Team on July 26, 2009. The moon was noticed during the 2009 equinox event by an approximately 36 kilometres (22 mi) long shadow which it cast on Saturn's B ring. S/2009 S 1 protrudes approximately 150 metres (490 ft) above the ring. The image was taken about 296,000 kilometres (184,000 mi) from Saturn.