NGC 2421
Number of stars per data source
Reference 42 : 98 stars
Reference 373 : 1209 stars
References
- 42
- Ramsay G., Pollaco D.L.
- (1992) Astron. Astrophys. Suppl. 94, 73
- CCD observations of 7 southern open clusters: NGC 2421, NGC 2439, NGC 2489, NGC 2567, NGC 2627, NGC 2658 and NGC 2910
- 1992A&AS...94...73R
- 373
- Yadav R.Q.S., Sagar R.
- (2004) Mon. Not. R. Astron. Soc. 351, 667
- A comprehensive CCD photometric study of the open cluster NGC 2421
- 2004MNRAS.351..667Y