Program: CLOCKSS
- Publisher: Published by the University of Chicago Press for the American Astronomical Society
- Print ISSN: 0004-637X
- Electronic ISSN: 1538-4357
- OCLC Number:
- Summary Holdings: v.756 (2012); v.804-v.805 (2015); v.809 (2015); v.811-v.814 (2015)
- Holdings Format: Digital