Groombridge 1830 group

The Groombridge 1830 group is a collection of stars that share common measurable motions, a classification known as a "moving group" in astronomy. These groups are not always visually clustered but are identified by their similar movement patterns. The Groombridge 1830 group is notable for containing subdwarf stars and the star RR Lyrae, which lent its name to a class of variable stars.1

Moving groups are valuable for astronomers because their shared motion allows for accurate distance calculations to individual members, aiding in establishing the galactic distance scale. The study of these groups helps in understanding the kinematic history of stars within the Milky Way Galaxy.1