https://github.com/davepinch/pinchy.cc/blob/master/content/sites/stars.astro.illinois.edu/sow/achird/distance/snippet-1-8.md
Achird (stars.astro.illinois.edu) ACHIRD (Eta Cassiopeiae). At almost fourth magnitude (3.44) and faint to the eye, and not a part of the traditional outline of Cassiopeia, Achird is often neglected.