Eurypylus of Mysia ever seen. By some accounts Priam obtained Eurypylus' aid in the war by giving his mother Astyoche a golden vine, or by promising Eurypylus one of his daughters as wife. According to Servius, Eurypylus had a son, Grynus, who became king in Mysia and was known as the eponym of Gryneion and the founder of Pergamon. The earliest mention of Eurypylus occurs in Homer's "Odyssey". In the underworld Odysseus meets Achilles' ghost who asks Odysseus to tell him about his son Neoptolemus. Odysseus tells how, during the fighting at Troy, Achilles' son killed a great warrior, the magnificent and beautiful
2260 Neoptolemus observation by Robert Stephens at the Center for Solar System Studies in 2015, and 2016, gave a concurring period of 8.18 and 8.199 hours with a corresponding amplitude of 0.14 and 0.03 magnitude (). According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, "Neoptolemus" measures between 71.65 and 81.28 kilometers in diameter and its surface has an albedo between 0.051 and 0.0650. The "Collaborative Asteroid Lightcurve Link" adopts the results obtained by IRAS, that is, an albedo of 0.0650 and a diameter of