A Moser-spindle-free 5-chromatic unit distance graph on 2131 vertices in the plane

With regard to the Hadwiger-Nelson problem, several 5-chromatic unit distance graphs in the Euclidean plane have been discovered in recent years. While most constructions rely heavily on the Moser spindle, Voronov \textit{et al.} found examples on 64513 vertices that completely avoid it. In this note, we improve upon this result by presenting a 5-chromatic unit distance graph on 2131 vertices that similarly does not contain the Moser spindle. It is constructed utilizing the arcs of a 7-fold symmetric unit distance graph on 21 vertices.