Solar Neighbourhood Kinematics Based on the Gaia Data

From GAIA catalog we have selected a sample of stars within 100 pc from the Sun. To avoid sample biases a special concern was taken in regard to radial velocities and multiplicities. We have selected those with necessary data $-$ direction, parallax, proper motion and radial velocity. The kinematics of this sample is analysed. The sample size is 62,598 stars. Using an analytic model of Galactic gravitational potential the galactocentric orbits of these stars are calculated. It is shown, as can be expected, that in the Solar neighbourhood stars mostly belong to the thin disc (86.3 per cent). This is followed by the thick disc which has a fraction of 12.4 per cent, whereas the lowest fraction belongs to the halo (1.3 per cent). The kinematical similarity for suspected binaries is also examined.