Needle in a Haystack

This visualization shows a newly-discovered dwarf planet, “DeeDee” as it appears in the sky through three years of surveys by the Dark Energy Camera.  Each grey pixel is an object that was spotted on one night – the red dots are the points that were sifted out of this information and analyzed to confirm DeeDee’s position and orbit.

The data was imported into R and built into this animation using ggplot2 and gganimate.

http://kateweber.com/flyingrocks/animation-once.gif