NGC 581
Number of stars per data source
Reference 30 : 1 star
Reference 43 : 2 stars
References
- 30
- Meadows A. J.
- (1961) Monthly Notices Roy. Astron. Soc. 123, 81
- Turbulence and rotation in early-type stars
- 1961MNRAS.123...81M
- 43
- Meisel D. D.
- (1968) Astron. J. 73, 350
- Studies of visual double stars. I
- 1968AJ.....73..350M