[1] The dark D/P-type asteroid belongs to the largest Jupiter trojans and has a notably elongated shape and a longer than average rotation period of 24.49 hours.

[7] Jupiter trojans are thought to have been captured into their orbits during or shortly after the early stages of the formation of the Solar System.

[9][13][14][15][16] The so-far best-rated photometric observations by Robert Stephens at the Goat Mountain Astronomical Research Station (G79) and Santana Observatory (646) in November 2008, gave a longer-than average rotation period of 24.49±0.01 hours with a brightness variation of 0.34 magnitude (U=3-).

[10][11][12] The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0313 and a diameter of 164.31 kilometers based on an absolute magnitude of 8.30.

[5] The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0313 and a diameter of 164.31 kilometers based on an absolute magnitude of 8.30.

[9] This minor planet was named from Greek mythology after the hero Diomedes, King of Argos and known for his participation in the Trojan War, regarded as the best warriors of the Achaeans, just behind Achilles and alongside Ajax.