The bright dot with a long shadow in the center is S/2009 S 1. 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 km (73,000 mi), in the outer part of the B Ring, and with an approximate diameter of 300 m (980 ft). The moonlet was discovered by the Cassini Imaging Team during the Cronian equinox event on 26 July 2009, when it cast a shadow approximately 36 km (22 mi) long onto the B Ring. S/2009 S 1 protrudes approximately 150 m (490 ft) north of the ring. The image was taken approximately 296,000 km (184,000 mi) from Saturn.
S/2009 S 1 was first identified by the Cassini Imaging Team 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.