Kinematic Properties of the GAIA EDR3 Catalogue

Abstract

We have obtained a solution of the Ogorodnikov-Milne stellar-kinematics equations based on the material of the entire Gaia EDR3 star catalogue containing 1.8 billion objects. In view of the insufficient accuracy of individual trigonometric parallaxes, we have also obtained an analogous solution based on a sub-catalogue of selected 98 million stars for which the parallaxes are known with an accuracy better than 1${%}$. We have performed a detailed analysis of these solutions as a function of stellar magnitude and distance.