5259 Epeigeus /ɪˈpiːdʒiːəs/ is a mid-sized Jupiter trojan from the Greek camp, approximately 44 kilometers (27 miles) in diameter.
It was discovered on 30 January 1989, by American astronomer couple Carolyn and Eugene Shoemaker at the Palomar Observatory in California.
It is located in the leading Greek camp at the Gas Giant's L4 Lagrangian point, 60° ahead on its orbit (see Trojans in astronomy).
In August 1995, a rotational lightcurve of Epeigeus was obtained from photometric observations over five consecutive nights by Italian astronomer Stefano Mottola using the Bochum 0.61-metre Telescope at ESO's La Silla Observatory in Chile.
[5][6][7] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0738 and a diameter of 42.59 kilometers based on an absolute magnitude of 10.3.