A few blue giant stars have been identified in the cluster, but Messier 21 is composed mainly of small dim stars.

In addition, brown dwarfs and low-mass runaway stars have been identified.

These stars are still commonly identified by his name and catalog number.

"The stars have already been identified," Mr. Lee noted.

After another command, the stars in the constellation were identified.

This star is identified as Gliese 752 B component of that system.

A few other such stars have been identified, and together they are called the Ursa Major Moving Group.

Twelve stars are identified with a one-word stage name.

The stars in this catalog are identified by the designation; VB.

Many stars are customarily identified by their HD numbers.