 "Atossa" is an assumed, stony S-type asteroid, based on its high albedo "(see below)" and its proximity or potential membership to the stony Flora family.In August 2005, a rotational lightcurve of "Atossa" was obtained from photometric observations by French amateur astronomer Philippe Baudoin.Lightcurve analysis gave a well-defined rotation period of hours with a high brightness variation of magnitude, indicative of a non-spherical, elongated shape ().