504 Cora, provisional designation 1902 LK, is an asteroid from the outer region of the asteroid belt, approximately 30 kilometers in diameter. It was discovered by American astronomer Solon Bailey at Harvard's Boyden Station in Arequipa, Peru, on 30 June 1902. The asteroid orbits the Sun at a distance of 2.1–3.3 AU once every 4 years and 6 months (1,639 days). Its orbit has a relatively high eccentricity of 0.22 and an inclination of 13° with respect to the ecliptic. The body's observation arc begins 4 years after its discovery with the first used observation made at Heidelberg in 1906.