analemma illustrating the path of a central star in a distant planetary system over time

analemma central star planetary system celestial mechanics astronomy bodies orbits paths time lapse sun path astrophysics elliptical motion orbital period tracking cosmic phenomena navigation stellar behavior distance measurement astronomical events light trails rotation space visualization cycles galactic structure astrophysical models gravitational forces brightness imagery alignment variation positions speed evolution observations harmonic observational movement sphere solar seasonal shifts curves planet dynamic temporal analysis mapping