It orbits the Sun in the inner asteroid belt at a distance of 2.1–2.7 AU once every 3 years and 9 months (1,363 days).
[7] According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Alainmilsztajn measures 2.2 kilometers in diameter and its surface has an exceptionally high albedo of 0.42,[4] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 2.5 kilometers with an absolute magnitude of 15.34.
[3] In October 2010, a rotational lightcurve of Alainmilsztajn was obtained from photometric observations made by astronomers at the Palomar Transient Factory in California.
[5] This minor planet was named in memory of French particle physicist and astronomer Alain Milsztajn (1955–2007).
His research included the structure of the proton and the quest of detecting dark matter by means of gravitational lensing.