[1] The assumed C-type asteroid belongs to the 70 largest Jupiter trojans and has a rotation period of 14.8 hours.

[1] This minor planet was named by the discover from Greek mythology after Ilioneus, a ship commander and official spokesman under Aeneas.

Its V–I color index of 0.96 is typical for most D-type asteroids, the dominant spectral type among the Jupiter trojans.

[10][9] Follow-up observations by astronomers at the Palomar Transient Factory in 2013, and by Robert D. Stephens at the Center for Solar System Studies in 2015 and 2017, gave a concurring period determination with an amplitude between 0.18 and 0.34 (U=2/3/3).

[6][7][8] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0602 and a diameter of 59.40 kilometers based on an absolute magnitude of 9.8.