# motion_since_birth¶

gammapy.utils.coordinates.motion_since_birth(v, age, theta, phi)[source]

Compute motion of a object with given velocity, direction and age.

Parameters: Absolute value of the velocity Age of the source. theta : Quantity Angular direction of the velocity. Angular direction of the velocity. Displacement in x direction Displacement in y direction Displacement in z direction Velocity in x direction Velocity in y direction Velocity in z direction