Collinder 21
Number of stars per data source
Reference 326 : 12 stars
References
- 326
- Hog E., Fabricius C., Makarov V.V., Urban S., Corbin T., Wycoff G., Bastian U., Schwekendiek P., Wicenec A.
- (2000) Astron. Astrophys. 357, L27
- The Tycho-2 Catalogue
- 2000A&A...355L..27H