Although \delta Sco is a bright and well-studied star , the details of its multiplicity have remained unclear .
Here we present the first diffraction-limited image of this 0 . ^ { \prime \prime } 12 binary star , made using optical interferometry , and resolve the confusion that has existed in the literature over its multiplicity .

Examining published speckle measurements , together with the present result , reveals a periodicity of 10.5 yr and allows calculation of the orbital parameters .
The orbit has a high eccentricity ( e = 0.82 ) and large inclination ( i = 70 \hbox { $ { } ^ { \circ } $ } ) , making it a favourable target for radial velocity measurements during the next periastron ( in 2000 ) .