The binary asteroid 22 Kalliope: Linus orbit determination on the basis of speckle interferometric observations

摘要

In this paper we present the orbital elements of Linus satellite of 22Kalliope asteroid. Orbital element determination is based on the speckleinterferometry data obtained with the 6-meter BTA telescope operated by SAORAS. We processed 9 accurate positions of Linus orbiting around the maincomponent of 22 Kalliope between 10 and 16 December, 2011. In order todetermine the orbital elements of the Linus we have applied the directgeometric method. The formal errors are about 5 mas. This accuracy makes itpossible to study the variations of the Linus orbital elements influenced bydifferent perturbations over the course of time. Estimates of six classicalorbital elements, such as the semi-major axis of the Linus orbit a = 1109 +\- 6km, eccentricity e = 0.016 +\- 0.004, inclination i = 101{\deg} +\- 1{\deg} tothe ecliptic plane and others, are presented in this work.