Frinchaboy, Peter M.; et al. Open Clusters as Galactic Disk Tracers. I. Project Motivation, Cluster Membership, and Bulk Three-Dimensional Kinematics. The Astronomical Journal. 2008, 136: 118–145. Bibcode:2008AJ....136..118F. arXiv:0804.4630. doi:10.1088/0004-6256/136/1/118. See table I, p. 12.
doi.org
Frinchaboy, Peter M.; et al. Open Clusters as Galactic Disk Tracers. I. Project Motivation, Cluster Membership, and Bulk Three-Dimensional Kinematics. The Astronomical Journal. 2008, 136: 118–145. Bibcode:2008AJ....136..118F. arXiv:0804.4630. doi:10.1088/0004-6256/136/1/118. See table I, p. 12.
harvard.edu
ui.adsabs.harvard.edu
Frinchaboy, Peter M.; et al. Open Clusters as Galactic Disk Tracers. I. Project Motivation, Cluster Membership, and Bulk Three-Dimensional Kinematics. The Astronomical Journal. 2008, 136: 118–145. Bibcode:2008AJ....136..118F. arXiv:0804.4630. doi:10.1088/0004-6256/136/1/118. See table I, p. 12.
ngcicproject.org
NGC 457. The NGC/IC Project Database. [2012-05-09]. (原始内容存档于2012-05-20).
web.archive.org
NGC 457. The NGC/IC Project Database. [2012-05-09]. (原始内容存档于2012-05-20).