 "Atossa" orbits the Sun in the inner asteroid belt at a distance of 1.8–2.6 AU once every 3 years and 3 months (1,174 days; semi-major axis of 2.18 AU).Its orbit has an eccentricity of 0.18 and an inclination of 3° with respect to the ecliptic.The body's observation arc begins at Heidelberg Observatory with its official discovery observation on 8 September 1915.