analemma showcasing the central star's movement in a planetary system over time

analemma central star planetary system celestial mechanics time lapse movement astronomy navigation orbital paths astrophysics stellar dynamics sphere trails space phenomena motion variation astronomical events observational light patterns cosmic structures trajectories astrophotography heliocentric model orbit visualization positioning distance measurements observations year systems spiral rays alignment solar coordinates interstellar travel analysis dark matter scale bodies astrophysical modeling trajectory calculations luminous universe mapping orbits evolutionary