 The asteroid was first observed as "" at Heidelberg Observatory in November 1926.The body's observation arc begins with its official discovery observation at Uccle in September 1950.In 1993, Andrea Milani suggested that "Antilochus " forms an asteroid pair with 3801 Thrasymedes, using the hierarchical clustering method (HCM), which looks for groupings of neighboring asteroids based on the smallest distances between them in the proper orbital element space.