English Psi Persei Cited by user Lithopsian on 21 Dec 2022 Psi Persei (Psi Per, ψ Persei, ψ Per) is a single Be star in the northern constellation of Perseus.
English Alpha Persei Cluster Cited by user Praemonitus on 18 Oct 2020 The Alpha Persei Cluster, also known as Melotte 20 or Collinder 39, is an open cluster of stars in the northern constellation of Perseus.