Kappa Andromedae

[2] Based on the star's ranking on the Bortle Dark-Sky Scale, it is luminous enough to be visible from the suburbs and from urban outskirts, but not from brightly lit inner city regions.

The discovery paper for Kappa Andromedae b[12] argued that the primary's kinematics are consistent with membership in the Columba Association, which would imply a system age of 20-50 million years, while a subsequent work derived an older age of 220±100 million years based on the star's position on the Hertzsprung-Russell diagram position [7] assuming that the star is not a fast rotator viewed pole-on.

Direct measurements of the star later showed that Kappa Andromedae A is in fact a rapid rotator viewed nearly pole-on[6] and yield a best-estimated age of 47+27−40 million years.

In November 2012, members of the Strategic Explorations of Exoplanets and Disks with Subaru (SEEDS) survey reported the discovery of a faint, directly-imaged companion Kappa Andromedae b.

The companion's spectrum shows evidence for water and carbon monoxide molecules and suggests the object has a low surface gravity.

κ Andromedae (upper centre)