S/2009 S1 is a small moon within Saturn's outer B ring. The satellite was found after scientist's spotted a 36 km long shadow on Saturn's rings.
The small moon was discovered in a single image taken by the Cassini orbiter on 26 July 2009.
How S/2009 S1 Got its Name:
S/2009 S1 is a provisional name indicating it is the first moon of Saturn discovered in 2009.