NGC 7209
Number of stars per data source
Reference 15 : 1 star
Reference 22 : 1 star
References
- 15
- Johnson H.L., Mitchell R.I., Iriarte B., Wisniewski W.Z.
- (1966) Comm. Lun. Plan. Lab. 4, 99
- UBVRIJKL Photometry of the Bright Stars
-
- 22
- Mendoza E.E.
- (1967) Tonantzintla Tacubaya 4, 114
- Multicolor Photometry of Long Period Variables
- 1967BOTT....4..114M