Claim: DP Leonis is a star system in the Leo constellation 1304 lightyears or 400 parsecs away from Earth.
Evidence: 1304 ly
(400 pc) Distance Leo DP Leonis (abbreviated DP Leo) is an eclipsing binary system approximately 1304 light-years away from the Sun, probably a cataclysmic variable star of the AM Herculis-type also known as polars.