NGC 2244
Number of stars per data source
Reference 25 : 21 stars
Reference 50 : 58 stars
Reference 153 : 111 stars
References
- 25
- Zug R.S.
- (1933) Lick Obs. Bull. 16, 119
- An investigation of color excess in galactic star clusters
-
- 50
- Cannon A.J., Pickering E.C.
- (1918-1924), Ann. Obs. Harvard Coll. Obs. 91 to 99 and 100
- Henry Draper catalogue and extension
-
- 153
- Kuznetsov V.I.
- (1986) Kinematica Fiz. Nebesn. Tel. 2, 45
- On the application of the P-Q diagram method for investigation of star clusters
-