We describe the serendipitous discovery in the spectroscopic data of the Sloan Digital Sky Survey of a star-like object , SDSSJ103913.70+533029.7 , at a heliocentric radial velocity of +1012 km~ { } s ^ { -1 } .
Its proximity in position and velocity to the spiral galaxy NGC 3310 suggests an association with the galaxy .
At this distance , SDSSJ103913.70+533029.7 has the luminosity of a super star cluster and a projected distance of 17 kpc from NGC 3310 .
Its spectroscopic and photometric properties imply a mass of > 10 ^ { 6 } ~ { } M _ { \odot } and an age close to that of the tidal shells seen around NGC 3310 , suggesting that it formed in the event which formed the shells .