NGC 6819
Number of stars per data source
Reference 63 : 474 stars
Reference 84 : 890 stars
References
- 63
- Burkhead M.S.
- (1971) Astron. J. 76, 251
- Photometric observations of the star cluster NGC 6819
- 1971AJ.....76..251B
- 84
- Auner G.
- (1974) Astron. Astrophys. Suppl. 13, 143
- Photographic photometry of the galactic cluster NGC 6819
- 1974A&AS...13..143A