盾牌座δ
Measurements of the proper motion of 810 stars within a 1.5° region centered on the cluster suggest that it has at least 169 members. Of these, there is a total of 26 variable stars, including three candidate Gamma Doradus variable stars and sixteen Delta Scuti variables. This unusually high proportion of Delta Scuti variables is likely the result of the turnoff point being located within the instability strip.